Scientists at IOCB Prague are uncovering new details of gene transcription. They have identified a previously unknown molecular mechanism by which the transcription of genetic information from deoxyribonucleic acid (DNA) into ribonucleic acid (RNA) can be initiated. The researchers focused on a specific class of molecules known as alarmones, which are found in cells across a wide range of organisms and whose levels often increase under conditions of cellular stress. The results were published in the prestigious scientific journal Nature Chemical Biology.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/UOCHB_Vyzkum_z_UOCHB_odhaluje_dosud_nepoznany_zpusob_prepisu_geneticke_informace_bc2bfffa6c.jpg" alt="IOCB Prague/Tomáš Belloň: Research from IOCB Prague reveals a previously unknown mechanism of genetic transcription: Dr. Hana Cahová, head of the Chemical Biology of Nucleic Acids research group." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_UOCHB_Vyzkum_z_UOCHB_odhaluje_dosud_nepoznany_zpusob_prepisu_geneticke_informace_bc2bfffa6c.jpg 234w," sizes="100vw" width="2000" height="1335"><div>Molecules of ribonucleic acid can carry a variety of chemical modifications at one end, known as caps. In eukaryotic organisms, including human cells, the best-known cap plays an important role in RNA stability and in regulating its subsequent fate. In recent years, however, it has become clear that alternative, non-canonical RNA caps also exist, although their formation and the mechanisms by which they are attached to RNA remain only partially understood. These include alarmone caps, formed by dinucleoside polyphosphate molecules, that protect cellular RNA at moments when the cell is under threat.In their study, <a target="_blank" rel="noopener noreferrer" href="https://cahova.group.uochb.cz/en">Dr. Hana Cahová</a> and colleagues examined bacterial RNA polymerase and investigated how this enzyme can initiate transcription using dinucleoside polyphosphates (NpNs) instead of the standard RNA building blocks. For the first time, the scientists described, at the atomic level, how RNA bearing an alarmone cap can be generated directly at the initiation of gene transcription. They also observed that NpNs bind through a different type of base pairing than is typically observed.The work was significantly shaped by Valentina Serianni from Hana Cahová’s team, who demonstrated the ability of dinucleoside polyphosphates to initiate gene transcription, and by Jana Škerlová, who focused on the structural analysis of RNA polymerase. Using cryogenic electron microscopy data, she showed how dinucleoside polyphosphate molecules bind within the active site of RNA polymerase – that is, the core of the enzyme where genetic information is transcribed. Together, their findings help to elucidate the processes that accompany the transcription of genetic information from DNA to RNA.Hana Cahová adds: “We’re describing something that truly occurs in cells and that we’re now able to observe directly at the level of individual molecules. This allows us to answer fundamental questions about cellular processes, such as how cells adapt to stress. RNA plays a central role in this, as it carries the cascade of information underlying any cellular response – for example, to threatening conditions caused by nutrient deprivation or temperature shock.”<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/UOCHB_Vyzkum_z_UOCHB_odhaluje_dosud_nepoznany_zpusob_prepisu_geneticke_informace_2_0fe88ff9e9.jpg" alt="IOCB Prague/Tomáš Belloň: Research from IOCB Prague reveals a previously unknown mechanism of genetic transcription: Dr. Tomáš Kouba, head of the Cryogenic Electron Microscopy core facility." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_UOCHB_Vyzkum_z_UOCHB_odhaluje_dosud_nepoznany_zpusob_prepisu_geneticke_informace_2_0fe88ff9e9.jpg 234w," sizes="100vw" width="2000" height="1335"><div>Cryogenic electron microscopy (cryo-EM) was central to the project. This part of the work was led by Dr. Tomáš Kouba, one of the authors of the study. “Cryogenic electron microscopy allows us to freeze biological molecules in a state very close to their natural form and then determine their three-dimensional structure. This makes it possible to look directly into the active centers of enzymes and observe their function down to the atomic level,” he explains.Last year, IOCB Prague opened a new <a target="_blank" rel="noopener noreferrer" href="https://cryoem.group.uochb.cz/en">cryo-EM center</a> that is unique within the Czech research environment. State-of-the-art cryogenic electron microscopes are housed in a specially designed building and enable the study of biological processes with exceptional structural precision.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/UOCHB_Vyzkum_z_UOCHB_odhaluje_dosud_nepoznany_zpusob_prepisu_geneticke_informace_3_4d881e7a58.jpg" alt="IOCB Prague: Research from IOCB Prague reveals a previously unknown mechanism of genetic transcription: This work shows how NpnNs initiate bacterial transcription. Cryo-EM reveals how nucleobases pair with the template: one in canonical and one in reverse Watson–Crick mode, providing a structural basis for their function as non-canonical RNA caps." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_UOCHB_Vyzkum_z_UOCHB_odhaluje_dosud_nepoznany_zpusob_prepisu_geneticke_informace_3_4d881e7a58.jpg 245w," sizes="100vw" width="2000" height="1077"><blockquote><h4>The Original article</h4><h4><a target="_blank" rel="noopener noreferrer" href="https://www.nature.com/articles/s41589-025-02134-5">Molecular insight into 5′ RNA capping with NpnNs by bacterial RNA polymerase</a></h4>Valentina M. Serianni, Jana Škerlová, Anna Knopp Dubánková, Anton Škríba, Hana Šváchová, Tereza Vučková, Anatolij Filimoněnko, Milan Fábry, Pavlína Řezáčová, Tomáš Kouba &amp; Hana Cahova&nbsp;Nat. Chem. Biol. 21 (2026)<a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1038/s41589-025-02134-5">https://doi.org/10.1038/s41589-025-02134-5</a><h6>licensed under <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/4.0/">CC-BY 4.0</a></h6></blockquote><h4>Abstract</h4>RNA capped with dinucleoside polyphosphates has been discovered in bacteria and eukaryotes only recently. The likely mechanism of this specific capping involves direct incorporation of dinucleoside polyphosphates by RNA polymerase as noncanonical initiating nucleotides. However, how these compounds bind into the active site of RNA polymerase during transcription initiation is unknown. Here, we explored transcription initiation in vitro, using a series of DNA templates in combination with dinucleoside polyphosphates and model RNA polymerase from Thermus thermophilus. We observed that the transcription start site can vary on the basis of the compatibility of the specific template and dinucleoside polyphosphate. Cryo-electron microscopy structures of transcription initiation complexes with dinucleoside polyphosphates revealed that both nucleobase moieties can pair with the DNA template. The first encoded nucleotide pairs in a canonical Watson–Crick manner, whereas the second nucleobase pairs noncanonically in a reverse Watson–Crick manner. Our work provides a structural explanation of how dinucleoside polyphosphates initiate RNA transcription.</div></div>

Research from IOCB Prague reveals a previously unknown mechanism of genetic transcription

Food adulteration is a phenomenon with a long history that has gained increasing importance in recent years due to the globalization of food supply chains and strong economic pressures. Whether it involves diluting olive oil with cheaper oils, adding sugar to honey, or the hidden use of substitutes in protein supplements, the result is a loss of consumer trust and, in some cases, a potential risk to health. Analytical chemistry plays a key role in this area by providing methods and technologies capable of identifying and quantifying target compounds as well as unwanted impurities in a wide range of food matrices.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Praha_Falsovani_potravin_a_jak_ho_odhali_analyticka_chemie_6912db5492.jpg" alt="Watrex: Food Adulteration and How It Is Revealed by Analytical Chemistry" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Praha_Falsovani_potravin_a_jak_ho_odhali_analyticka_chemie_6912db5492.jpg 245w," sizes="100vw" width="1600" height="900"><h4>The Role of Chromatography in Forensic Food Analysis</h4>Chromatography, particularly liquid chromatography (HPLC), is one of the most effective analytical tools for separating complex mixtures of molecules. It enables:<ul><li>qualitative identification of individual components in a sample,</li><li>quantitative determination of their concentrations,</li><li>detection of impurities and unexpected components that may indicate adulteration.</li></ul>In practice, HPLC is often combined with various types of detectors (UV/VIS, DAD, refractive index detectors) or with other techniques (e.g., mass spectrometry) to increase selectivity and sensitivity.<h4>Isocratic vs. Gradient Elution</h4>In the analysis of food samples, chromatographic methods are selected according to the analytical goal:<ul><li>Isocratic HPLC uses a constant mobile phase composition throughout the analysis. It is simple, robust, and ideal for routine determinations of well-defined target analytes (e.g., sugars or vitamins).</li><li>Gradient HPLC changes the mobile phase composition during separation, enabling better resolution of complex mixtures with a wide range of polarities (e.g., peptides or phenolic compounds).</li></ul>Gradient methods are particularly useful when analytes have very different properties and high separation efficiency is required.<h4>Watrex Praha and the Contribution of Modern Systems to Food Analysis</h4><a target="_blank" rel="noopener noreferrer" href="https://watrex.com/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_clanky_HPLCsystemy">Watrex Praha, s.r.o.</a> is one of the leading Czech manufacturers and distributors of liquid chromatography systems and instruments, with a long tradition dating back to 1990. The company has successfully transformed from a distributor into a manufacturer of its own HPLC and related technologies, focusing on modular, robust systems suitable even for demanding analytical tasks.Their <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?manufacturerItems=93&amp;search=streamline">Streamline™ product line</a> includes several HPLC system concepts suitable for food analysis:<ul><li>Isocratic HPLC system – a simple yet precise configuration with a single pump, column thermostat, and UV/VIS detector; suitable for routine determination of known analytes (e.g., basic carbohydrates, food additives).</li><li>Binary gradient HPLC system – equipped with two pumps enabling mobile phase gradient formation, which enhances separation performance for complex mixtures (e.g., phenolic profiles of wine, components of aromatic extracts).</li><li>GPC/SEC system (Gel Permeation / Size Exclusion Chromatography) – a specialized solution for the determination of macromolecules and polymers, also relevant for the analysis of high-molecular-weight components in foods (e.g., polysaccharides).</li></ul><blockquote>👉<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/Watrex_catalog_2024_ba97395f92.pdf">Product catalogue HERE</a></blockquote>Thanks to the modular nature of these systems, analysts can easily adapt the configuration to a specific analytical problem, from simple routine analyses to complex characterization of food samples.<h4>Practical Examples of Adulteration Revealed by HPLC</h4><ul><li>Detection of olive oil dilution: HPLC can separate and quantify characteristic triacylglycerols and fatty acids; unusual patterns indicate the presence of cheaper oils.</li><li>Estimation of sugar addition in honey: Isocratic HPLC with a refractive index detector can determine sugar profiles (glucose, fructose, sucrose), revealing dilution or the addition of sugar syrups.</li><li>Identification of aromatic adulterants in wine: Gradient HPLC with a PDA detector can reveal phenolic and aromatic profiles that are altered by the addition of synthetic compounds.</li></ul><h4>Conclusion</h4>Food adulteration remains a current issue that requires reliable and sensitive analytical methods. Liquid chromatography, and in particular modern HPLC systems, represent one of the most powerful tools for detecting unwanted additives, impurities, and unexpected components in complex food samples. Manufacturers such as <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_clanky_HPLCsystemy">Watrex Praha</a> provide flexible chromatographic platforms covering a wide range of analytical tasks from simple isocratic to advanced gradient and GPC/SEC applications thereby supporting analysts in ensuring food quality and consumer protection.<blockquote>Did you find this article interesting? Follow <a target="_blank" rel="noopener noreferrer" href="https://watrex.com/?utm_source=labrulez&amp;utm_medium=propagace&amp;utm_campaign=labrulez_clanky_HPLCsystemy">Watrex Praha</a> on their social media (<a target="_blank" rel="noopener noreferrer" href="https://www.linkedin.com/company/watrex/?viewAsMember=true">LinkedIn</a> and <a target="_blank" rel="noopener noreferrer" href="https://www.facebook.com/WatrexPrague">Facebook</a>) for more engaging topics.</blockquote>

Food Adulteration and How It Is Revealed by Analytical Chemistry

Join us for a fascinating conversation with Dr. Subhoja Chakraborty from the University of Central Florida, whose cutting-edge research targets the global challenge of malaria drug resistance. Dr. Chakraborty shares her journey from structure-based drug design during her PhD to her recent collaborative work repurposing human kinase inhibitors as rapid, selective antimalarials against drug-resistant Plasmodium falciparum strains.<h4>In this episode, you'll learn:</h4><ul><li>How structure-guided approaches reveal potential drug targets, including cysteine proteases like falcipain-2, and kinases implicated in malaria's complex life cycle.</li><li>The power of repurposing kinase inhibitors originally developed for cancer and other diseases, focusing on compound 12, which blocks hemozoin formation and protein kinase 6—key steps in parasite survival.</li><li>Lab techniques such as affinity, gel filtration, and size exclusion chromatography for recombinant protein purification—and how troubleshooting is crucial for high-yield, stable complexes.</li><li>Advances in mass spectrometry for characterizing protein interactions, validating drug targets, and mapping molecular pathways pivotal to malaria therapeutics.</li><li>Tips and lessons for new researchers facing the challenges of sample preparation, complex protocols, and working as part of a collaborative team.</li></ul>Dr. Chakraborty’s insights bridge the gap between basic science and translational drug discovery, offering hope for more effective, targeted malaria treatments in a world where resistance to frontline therapies threatens millions.<h4>Referenced Papers:</h4><ul><li>"Plasmodium falciparum protein kinase 6 and hemozoin formation are inhibited by a type II human kinase inhibitor exhibiting antimalarial activity" (Cell Chemical Biology, 2025)</li><li>"New insights of falcipain 2 structure from Plasmodium falciparum 3D7 strain" (BBRC, 2022)</li><li>"Structure-Based Optimization of Protease−Inhibitor Interactions to Enhance Specificity of Human Stefin‑A against Falcipain‑2 from the Plasmodium falciparum 3D7 Strain" (Biochemistry, 2023)</li></ul>If you’re a student, scientist, or simply passionate about advances in infectious disease research, this episode offers actionable insights, inspiring advice, and a front-row seat to innovation in combating malaria.<h3>Video Transcription</h3><h4>From Structural Biology to Drug Discovery: Chromatography and Mass Spectrometry in Malaria Research</h4><h5>Introduction</h5>In this discussion, Subhoja shares insights into her research journey, focusing on malaria drug discovery and the role of modern analytical techniques in biological and biomedical research. The conversation is aimed primarily at undergraduate students and early-career researchers interested in chemistry, biotechnology, and life sciences.<h5>Research Focus: Malaria Drug Discovery and Kinase Targets</h5>Subhoja is currently involved in malaria drug discovery research at the University of Central Florida, where she has been working since beginning her postdoctoral position two years ago. Her earlier PhD research focused on structure-based drug design in malaria, using a combination of in silico approaches, recombinant protein expression, and X-ray crystallography to determine precise three-dimensional structures of target proteins and their inhibitors.This structural perspective provided a foundation for her current work, which centers on drug discovery through compound screening and repurposing. A recent publication from her laboratory explores the use of repurposed mammalian CDK-like kinase inhibitors as potential antimalarial agents. While such kinase inhibitors are well known in cancer and cardiovascular research, their application to malaria targets represents a novel and promising approach.Kinases are attractive drug targets because of their central role in cell signaling and growth pathways. By targeting specific kinases involved in different stages of the malaria parasite life cycle—whether asexual growth, gametocytogenesis, or differentiation—it may be possible to significantly inhibit parasite growth and progression.<h5>Chromatography in Protein Expression and Purification Workflows</h5>Chromatography plays a critical role throughout Subhoja’s research. Her experience spans from basic chromatography techniques during her early training to advanced protein purification workflows using affinity chromatography, gel filtration (size exclusion chromatography), and ion exchange chromatography.Recombinant proteins are routinely purified using affinity resins such as nickel or cobalt, followed by further purification to remove contaminants. Fast Protein Liquid Chromatography (FPLC) enables compact, stepwise purification workflows suitable for producing proteins for in vitro assays.A recurring challenge in this process is the expression of high-molecular-weight proteins, which often accumulate in insoluble fractions or inclusion bodies. Careful selection of expression vectors, host systems, and induction conditions is therefore essential to maximize yield and solubility.<h5>Integrating Size Exclusion Chromatography into the Workflow</h5>Size exclusion chromatography (SEC) is typically used after affinity purification to further improve protein purity. Following elution with imidazole or glutathione, desalting is required to prevent buffer components from interfering with downstream assays. This is often achieved using desalting columns such as G-25 or PD-10.To remove lower-molecular-weight contaminants, finer SEC media—such as Superdex or Sephacryl columns—are employed. Concentration steps using molecular-weight cut-off filters are then applied to obtain the desired protein concentration for functional studies.These iterative purification and troubleshooting steps are a routine part of protein biochemistry and reflect the importance of methodical optimization and careful validation.<h5>The Role of Mass Spectrometry in Biomolecular Characterization</h5>Mass spectrometry is a key analytical tool in Subhoja’s research pipeline, particularly for target identification and validation. In both malaria and cancer research, MS is used alongside chromatography, immunoprecipitation, and pull-down assays to study protein interactions and molecular recognition events.Affinity-based mass spectrometry enables the identification of binding partners and interactors, whether studying proteins, long non-coding RNAs, or protein complexes. Techniques such as native MS, tandem affinity purification, and proximity labeling (e.g., TurboID-based workflows) provide deeper insights into molecular networks and signaling pathways.These approaches are essential for understanding how candidate drug targets function within complex biological systems.<h5>Sample Preparation Challenges in Biological Research</h5>Sample preparation remains one of the most challenging aspects of biological experimentation. Whole-cell lysates contain proteases, nucleases, and other components that can rapidly degrade target molecules. Preventing degradation requires minimizing preparation time, maintaining low temperatures, and using appropriate inhibitor cocktails.Reproducibility is also critical: biological experiments require multiple replicates, and variability is often unavoidable. Careful handling, protocol optimization, and continuous troubleshooting are essential to ensure reliable results, whether preparing samples for chromatography, mass spectrometry, sequencing, or immunoprecipitation.<h5>Advances in Chromatography and MS for Malaria Research</h5>Modern advances in chromatography and mass spectrometry significantly enhance malaria research by enabling precise target identification, quantification, and functional characterization. Drug discovery workflows begin with construct design and recombinant expression, followed by purification and interaction studies.In malaria research, stage-specific parasite biology requires careful extraction and analysis of proteins from different life cycle stages. Tandem affinity MS, immunoprecipitation, and in vivo validation studies help confirm target relevance and therapeutic potential.Recent work on repurposed kinase inhibitors has shown promising results, including inhibition of hemozoin formation—a key detoxification pathway for the malaria parasite—highlighting the potential of such compounds for further development.<h5>Malaria, Drug Resistance, and Global Impact</h5>Malaria remains a major global health burden, with over 600,000 deaths annually and widespread drug resistance complicating treatment. Artemisinin resistance, particularly associated with mutations in the K13 propeller domain, has driven the search for new targets and therapies.During her PhD, Subhoja focused on falcipain-2, a cysteine protease involved in hemoglobin degradation within the parasite. This pathway is critical for parasite survival and has emerged as a promising drug target. Her work revealed that falcipain-2 operates within a larger protein complex responsible for hemoglobin processing and amino acid release.Understanding these molecular mechanisms is essential for developing robust, stage-specific antimalarial strategies.<h5>Advice for Early-Career Researchers</h5>For researchers just starting out, Subhoja emphasizes the importance of hands-on experience. Working directly with cells, lysates, and analytical tools is essential for truly understanding experimental systems. Failure is an inherent part of research, and perseverance is key.Motivation, teamwork, careful sample handling, and thorough preparation all contribute to long-term success. Reading extensively, critically evaluating one’s own work, and appreciating incremental progress are vital aspects of a sustainable research career.Every successful experiment—no matter how small—represents meaningful progress and contributes to the broader goals of science and medicine.<h5>Closing Remarks</h5>The discussion highlights how interdisciplinary approaches combining chromatography, mass spectrometry, structural biology, and biochemistry are driving advances in malaria drug discovery. Through careful experimental design, analytical rigor, and collaborative teamwork, researchers can address complex biological challenges and contribute to global health solutions.<blockquote>This text has been automatically transcribed from a video presentation using AI technology. It may contain inaccuracies and is not guaranteed to be 100% correct.</blockquote><blockquote><h4>Concentrating on Chromatography Podcast</h4>Dive into the frontiers of chromatography, mass spectrometry, and sample preparation with host David Oliva. Each episode features candid conversations with leading researchers, industry innovators, and passionate scientists who are shaping the future of analytical chemistry. From decoding PFAS detection challenges to exploring the latest in AI-assisted liquid chromatography, this show uncovers practical workflows, sustainability breakthroughs, and the real-world impact of separation science. Whether you’re a chromatographer, lab professional, or researcher you'll discover inspiring content!You can find Concentrating on Chromatography Podcast in podcast apps:<ul><li><a target="_blank" rel="noopener noreferrer" href="https://open.spotify.com/show/1wZg67rCjoGju4yhqxI3tL">Spotify</a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podcasts.apple.com/tz/podcast/concentrating-on-chromatography/id1788429185">Apple podcast</a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podscan.fm/podcasts/concentrating-on-chromatography">podscan</a></li></ul>and on <a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/@ChromatographyTalk/videos">YouTube channel</a></blockquote>

Affinity, Gel Filtration, Size Exclusion Chromatography: Repurposing Kinase Inhibitors for Malaria

Article

Product

Video

Scientists

Food

Interview

Science and research

The Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences (IOCB Prague) is a leading scientific institution in the Czech Republic, recognized internationally. Its primary mission is basic research in the fields of chemical biology and medicinal chemistry, organic and material oriented chemistry, chemistry of natural compounds, biochemistry and molecular biology, physical chemistry, theoretical chemistry, and analytical chemistry. 

Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences

Organomation, founded in 1959, designs and manufactures high-quality nitrogen evaporators and extraction systems. Known for innovation and durability, their lab instruments are used globally for efficient sample preparation with strong customer support.

Organomation

WATREX Prague is the distributor and producer of HPLC techniques in the Czech Republic and Slovakia. Main Chromatografic and Related Techniques Supported: LC, GPC, IC, IEC, Automated SPE, LC Columns and special column packings, LC method development, Software development, Laboratory Robots.

Watrex Praha

Agilent Technologies

MAC-MOD ANALYTICAL

Thermo Fisher Scientific

Waters Corporation

<h4>European Free Educational Webinar Series</h4>
Let&#39;s go back to the basics of Chromatography, Mass Spectrometry, Data Analysis and Trouble-shooting: understanding the importance of the basics will enable you to be more effective in your daily laboratory life.
<h4>EPISODE 5</h4>
Analytical Method Development
What will you learn?
<ul>
<li>How to choose the right Analytical Column Kit</li>
<li>Select the critical Parameters for your Analytical Methods</li>
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<blockquote>
Prezenter: Andrea Gheduzzi (Principal LC Market Dev. Manager, EMEA, Waters Corporation)
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Andrea has spent more than 30 years in the chromatography field. Across his career he had various roles, service engineer, chromatography lab position, and technical application support manager. He has mainly been dealing with pharma accounts, also supporting LC method development activities using DoE/QbD approaches. In his role as Pharma Business Development Manager at Waters he has further expanded his expertise in AQbD and related applications.
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Prezenter: Tobias Langrock (Senior Application Specialist Chemistry Europe, Waters)
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During his time as a PhD student Tobias discovered his passion for LC and LC-MS/MS and has not lost it since. Joining Waters in 2008 was the perfect opportunity to expand his understanding and expertise in chromatography and mass spectrometry. Since then, he has been involved with a very wide range of instruments and applications, whether small or large molecules, reversed phase LC, IEX or SEC, SFC or GPC. His focus is always on the customers and their daily chromatographic challenges.
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Full Webinar Series Episodes List is available <a href="https://event.on24.com/wcc/r/4551012/F69479929A905500D8B21508527807E5/5385652">here</a>
Back to Basics - Sample Preparation: Theory and Overview
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Back to Basics - Sample Preparation: Tips &amp; Tricks to make it simple
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Back to Basics - Theory of Liquid Chromatography
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Waters Corporation: Back to Bacisc Free Educational Webinar Serries

Analytical Method Development

How to select analytical column kit and the critical parameters for your method.

Analytical Method Development (HPLC, LC/MS, columns)

Hydrophilic interaction liquid chromatography (HILIC) and hydrophobic interaction chromatography (HIC) separations are becoming more common for a variety of applications. We see HIC being a primary method being used for antibody-drug-conjugate (ADCs) analyses and equally suitable for the analysis of protein modifications. The ability to retain neutral and ionizable polar species makes HILIC particularly popular for drug development and metabolomics studies.
This webinar will help new HILIC and HIC chromatographers avoid the common mistakes of HILIC and HIC separations by identifying the important method parameters involved. We’ll discuss how the separation works, show detailed application examples, and provide tip and tricks for robust method development.
<blockquote>
Presenter: Mohit Patel (Application Engineer, Agilent Technologies, Inc.)
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Mohit Patel is part of the CSD Online AE Team. His primary focus is to support SMLC, Bio-Columns, and consumables.
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Before joining Agilent, Mohit was an Assistant Professor of Chemistry at Temple University. Mohit developed his passion for science through his experiences as a faculty researcher and a mentor. Mohit actively taught, developed curriculum, and served as senior personnel, with a leadership position, on funded grants, mentored research projects, and co-coordinator of STEAM related outreach services.
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Mohit has earned a Doctorate degree in Chemistry from Temple University in 2016.
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Agilent Technologies: Why Use HILIC or HIC Chromatography: Theory and Method Development Strategies

Why Use HILIC or HIC Chromatography: Theory and Method Development Strategies

This webinar will help new HILIC and HIC chromatographers avoid the common mistakes of HILIC and HIC separations.

HILIC or HIC: Theory and Method Development Strategies

A truly universal chromatographic detector remains one of the most sought-after tools by analytical scientists.
In this interactive webinar, Professor James Grinias from Rowan University will share insights into his laboratory’s pioneering work with charged aerosol detection (CAD).
This session will delve into how CAD can be integrated into chromatographic workflows and highlight essential factors for achieving optimal performance, which might not be addressed with other detection methods. Professor Grinias will also explore practical applications, focusing on analyzing non-chromophoric species in the pharmaceutical industry.
The webinar will be conducted in a relaxed coffee chat format, with Kathrine Lovejoy joining Professor Grinias to facilitate the discussion. Join us for this engaging and informal session to learn about cutting-edge techniques and enhance your analytical skills.
Learning points:
<ul>
<li>Integration of CAD: How to incorporate Charged Aerosol Detection into chromatographic workflows.
</li>
<li>CAD Considerations: Key factors for optimal performance unique to CAD.
</li>
<li>Pharmaceutical Applications: Analyzing non-chromophoric species in the pharmaceutical industry.
</li>
</ul>
Who should attend?
<ul>
<li>Analytical Scientists who are interested in advanced detection methods for chromatography
</li>
<li>Pharmaceutical Professionals who focus on analyzing non-chromophoric species
</li>
<li>Researchers and Technicians seeking to enhance their chromatographic techniques
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<blockquote>
Presenter: James Grinias (Professor, Department of Chemistry &amp; Biochemistry, Rowan University)
</blockquote>
<blockquote>
Presenter: Katherine Lovejoy (Application Chemist, Thermo Fisher Scientific)
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Thermo Scientific: Integrating charged aerosol detection in chromatographic workflows

Integrating charged aerosol detection in chromatographic workflows

We will share insights into Professor James Grinias laboratory’s pioneering work with charged aerosol detection (CAD).

Integrating charged aerosol detection in chromatographic

This webinar will give an overview of the different LC modules and how they work.<blockquote>Presenter: Laura Montis (Product Specialist Liquid Phase Separations, Agilent)Laura began her carrier in the Liquid Chromatography over 15 years ago. After experiencing the pharmaceutical world in an analytical development lab, she went on to work with preparative chromatography and gained experience with Supercritical Fluid Chromatography prior to moving onto special HPLC applications, like 2DLC and Online LC.Throughout her career, Laura has held several positions, including application chemist, trainer, sales specialist, and marketing business development. She is currently Product Specialist for liquid phase chromatography systems within the International Distributor Organization in EMEA at Agilent Technologies.Laura studied analytical chemistry and holds a master’s degree from University of Lyon in France.</blockquote>

Agilent Technologies: HPLC Beginner Webinar Series

LC Instrument Hardware

This webinar will give an overview of the different LC modules and how they work.

In liquid chromatography, various detectors can be used. In this seminar we will take a closer look at UV, fluorescence, refractive index and ELSD detection.&nbsp;<blockquote>Presenter: Ansuman Mahato (Product Specialist Liquid Phase Separations, Agilent Technologies)Ansuman has been a Product Specialist at Agilent Technologies for 14 years, working with the pharmaceuticals, biopharmaceuticals, food, and chemicals industries. Based in Waldbronn, Germany, the manufacturing site for Agilent’s chromatography solutions, he helps make labs more efficient and compliant and has rich experience with techniques like HPLC, UHPLC, GPC/SEC, Prep LC, and 2D-LC.Ansuman is also skilled in polymer analysis using advanced tools like viscometry and MALS. He has published many papers in international journals and is a popular speaker for his practical insights and innovative solutions.</blockquote>

HPLC Detectors

In liquid chromatography, various detectors can be used. In this seminar we will take a closer look at UV, fluorescence, refractive index and ELSD detection.

<h4>The Waters 2024 Virtual Summer School - An Educational Journey to Master Food &amp; Environmental Analysis</h4>Unlock the full potential of LC-MS techniques with our immersive and educational sessions at the Waters Virtual F&amp;E Late Summer School 2024. From September 24th to 26th, engage with leading experts and discover cutting-edge methods for environmental and food analysis.<h5>Why attend?</h5><ul><li>Comprehensive Learning: Dive deep into advanced LC-MS techniques and gain practical knowledge to enhance your laboratory's analytical capabilities.</li><li>Expert Insights: Learn from industry leaders and gain firsthand experience through detailed modules on chromatography, mass spectrometry, and sample preparation.</li><li>Regulatory Compliance: Stay ahead with the latest insights on EU regulations for PFAS analysis in food and water, ensuring your lab meets stringent standards.</li></ul><h3>Episode #9: PFAS in Food | F&amp;E Summer School - Day 3 - Module 1</h3>The European Commision published for the first time maximum levels for the so-called “EU 4” PFAS (PFHxS, PFOS, PFOA and PFNA) in eggs, meat and fish with Regulation EU 2023/915. This was an expected result of EFSA’s letter of concern on those 4 PFAS and labs reacted accordingly. A more challenging task came with the EURL PFAS Guidance Document and a bit later with the Recommendation EU 2022/1431. The target LOQs for the EU 4 PFAS were set at 0.001 µg/kg in fruits, vegetables and babyfood. We will discuss the successful method implementation from sample preparation to final report and hear real-life experiences from our guest speaker Victoria Erdely (Eurofins GfA) and Katharina Rund (EURL PFAS).<h5>What you'll learn:</h5><ul><li>How to reach lowest levels of PFAS in food and work according to Recommendation EU 2022/1431 using Xevo TQ Absolute in combination with UniSpray ion source</li><li>How LC method development on Premier LC gives you the widest PFAS panel and separates interferences.</li><li>Tips &amp; tricks from the demo lab to avoid PFAS contamination, implement new analytes, speed up data processing, and keep best performance of your system</li><li>About a special PFAS training to help you implement the method in the lab.</li></ul><blockquote>Presenter:&nbsp;Dr. Sara Stead (Consulting Scientist, Food and Environmental, Scientific Operations, Waters Corporation)In her current position, Sara is a Principal Sales Application Chemist specializing in food and environmental LC-MS/MS based applications within the Waters UK and Ireland demo laboratory. Sara has worked in F&amp;E analysis with various research interests including the development of both multi-residue HRMS screening and targeted LC/GC MS based methods for the past 25 years in both the government and private sectors. ​Prior to joining Waters Sara was employed as a Lead Scientist at the Food and Environment Research Agency (FERA, Defra, UK) for 14 years. Sara has participated in EU Food and Veterinary Office (FVO) audit inspections, was an expert on behalf of the International Atomic Energy Agency (IAEA) and a member of the EuroResidue conference scientific committee.Presenter:&nbsp;Dr. Stuart Adams (Principal Scientist, Market Development, Food and Environmental Applications, Europe, Waters Corporation)Stuart has been developing methods for the determination of contaminants in food and the environment for over 17 years and has been with Waters Corporation since 2018. Stuart's previous role was as a senior analytical chemist at Fera (the UK’s National Reference Laboratory) and moved to Waters to focus on application development in the European region. He now serves as the attached scientist to the European Market Development team responsible for the food and environmental application areas. In his role, he works with customers to understand their analytical challenges and helps address them with Waters technologies.Presenter:&nbsp;Victoria Erdely (Head of Department - Method and Instrument Support, Eurofins GfA)Presenter:&nbsp;Dr. Katharina Rund (Food Chemist, EU Reference Laboratory for halogenated POPs in Feed and Food)</blockquote>

Waters Corporation: The Waters 2024 Virtual Summer School

PFAS in Food

We will discuss the successful method implementation from sample preparation to final report and hear real-life experiences.

<h4>The Waters 2024 Virtual Summer School - An Educational Journey to Master Food &amp; Environmental Analysis</h4>Unlock the full potential of LC-MS techniques with our immersive and educational sessions at the Waters Virtual F&amp;E Late Summer School 2024. From September 24th to 26th, engage with leading experts and discover cutting-edge methods for environmental and food analysis.<h5>Why attend?</h5><ul><li>Comprehensive Learning: Dive deep into advanced LC-MS techniques and gain practical knowledge to enhance your laboratory's analytical capabilities.</li><li>Expert Insights: Learn from industry leaders and gain firsthand experience through detailed modules on chromatography, mass spectrometry, and sample preparation.</li><li>Regulatory Compliance: Stay ahead with the latest insights on EU regulations for PFAS analysis in food and water, ensuring your lab meets stringent standards.</li></ul><h3>Episode #10: PFAS Analysis in Drinking, Ground, and Surface Water | F&amp;E Summer School - Day 3 - Module 2</h3>Analysis of PFAS is an essential part of water testing programs and becoming a regular requirement for monitoring in environment and food sources. As regulations, like the EU Drinking Water Directive, the EU Groundwater Directive, and the EU Water Framework Directive, have been updated or are in the process for an update, the requirements for method sensitivity have become more demanding. Whilst concentration levels go down, direct injection methods are increasingly desirable to laboratories carrying out routine analysis of PFAS where analyte preconcentration is not deemed necessary or required. They have a simple sample preparation method, which not only reduces the opportunity for contamination and error but speeds up analysis time and the requirements for large volumes of samples. This can provide labs with a higher throughput of samples and lower analysis costs.Dorrit Griesshaber from the Office for Environment and Energy in Basel (SZ) and Jenny Davies from Element Materials Technology in Flinshire (UK) will give insights how the analysis of PFAS in environmental samples works in routine testing labs.<h5>What you'll learn:</h5><ul><li>How to reach lowest levels of PFAS and work according to EU regulation using Xevo TQ Absolute in combination with UniSpray ion source,</li><li>LC method development on Premier LC and system modification for direct injection with large volume,</li><li>Tips &amp; tricks from the demo lab to avoid PFAS contamination, implement new analytes, speed up data processing, and keep best performance and</li><li>A special PFAS training to help you implement the method in the lab.</li></ul><blockquote>Presenter:&nbsp;Dr. Sara Stead (Consulting Scientist, Food and Environmental, Scientific Operations, Waters Corporation)Presenter:&nbsp;Aron Dekkers (Sales Application Chemist, Waters Corporation)Aron is part of the Customer Success team at Waters BeNeLux with a focus on Food &amp; Environmental LC-MS/MS applications and sales support. His special interest areas are PFAs and pesticides. He works in this role for more than 4 years. Aron finished his B.S. in Chemistry at Fontys Eindhoven (NL).Presenter:&nbsp;Dorrit Griesshaber (Amt für Umwelt und Energy (AUE))Presenter:&nbsp;Jenny Davies (Technical Director, Element Materials Technology)</blockquote>

PFAS Analysis in Drinking, Ground, and Surface Water

We will give insights how the analysis of PFAS in environmental samples works in routine testing labs. 

Chromatography is a pivotal analytical technique in pharmaceutical industry, essential for the separation, identification, and quantification of components in complex mixtures. USP Chapter 621 provides comprehensive guidelines on chromatographic methods, ensuring consistency, reliability, and accuracy across laboratories.This webinar covers the principles of USP Chapter 621, highlighting recent revisions. Attendees will gain insights into the permissible adjustments in chromatographic parameters and system suitability requirements. Case studies will be demonstrated to ensure compliance with regulatory standards.To be successful in implementing USP Chapter 621, we show you the practicality of using Agilent recommended LC supplies and explore how they can enhance laboratory efficiency.<h5>Key learnings:</h5><ul><li>A clear understanding of recent changes to USP Chapter 621 that impact your work.</li><li>Practical guidance on how to adjust chromatographic parameters without losing accuracy.</li><li>Case studies that connect theory to practice, ensuring you’re set for regulatory compliance.</li><li>Simple ways to improve lab efficiency using tools and supplies that support you, not complicate your process.</li></ul><blockquote>Presenter: Mr. Andrea Leonardi (Product Specialist, Chemistries &amp; Supplies, Agilent Technologies)Andrea holds a master's degree in Pharmaceutical Chemistry and Technology form Universita’ degli Studi di Camerino in Central Italy. Since completing his studies, he has held various laboratory and research roles with pharmaceutical companies in Italy and Switzerland, before coming to Singapore to join Novartis Institute for Tropical Diseases. This latest job involved characterizing novel APIs (Active Pharmaceutical Ingredients) by LC and LC/MS.In Agilent, Andrea is a Product Specialist in the Chemistries and Supplies Division in the South-East Asia Pacific and Korea region. He supports customers by helping to develop new analytical methods and improve existing ones to enhance lab efficiency and productivity. He also conducts training, seminars, and workshops. His expertise is in LC and LC/MS analysis of small molecules and biologics.Presenter: Ms. Soo Chin Heng (Product Specialist, Chemistries &amp; Supplies, Agilent Technologies)Soo Chin is currently a Chemistries &amp; Supplies Product Specialist with Agilent Technologies Singapore, covering South Asia Pacific and Korea region. She holds a BSc (Hons) in Chemistry and MSc in Advanced Chemical Engineering from Imperial College, London.Over 12 years in Agilent, she held roles as Agilent inside sales for Chromatography &amp; Spectroscopy instruments, as well as a pre-sales applications scientist for HPLC and Spectroscopy products, specializing in food market applications, purification by preparative LC and thin films &amp; optical coatings in materials applications. She supports customers by providing Agilent workflow solutions to our customers from the applied and life science market segments and actively supports trainings, seminars and workshops.</blockquote>

Agilent: Mastering Chromatographic Adjustments: A Guide to USP Chapter 621

Mastering Chromatographic Adjustments: A Guide to USP Chapter 621

Successful implementing USP Chapter 621: the practicality of using Agilent recommended LC supplies

Chromatographic Adjustments: A Guide to USP Chapter 621

USP &lt;621&gt; is a crucial chapter in the USP guidelines, affecting around 5000 monographs. It emphasizes the importance of establishing meaningful system suitability criteria for chromatography procedures to ensure valid, compendial, and regulatory compliance. The latest version of USP &lt;621&gt;, effective from December 2022, provides detailed guidance on method adjustments and transfers, facilitating the modernization of existing USP monograph methods. The revisions also expand the scope for modifying gradient method parameters and allow the transition from totally porous silica-based analytical columns to superficially porous particle-based columns to better meet industry needs.<h5>Key Learnings:</h5><ul><li>Strategies for optimizing chromatographic performance using right HPLC system</li><li>Understand the latest updates in USP &lt;621&gt; and how they impact chromatographic practices</li><li>Techniques for enhancing laboratory productivity and reducing operational costs</li><li>Strategies to modernize chromatographic conditions with case-studies</li><li>Revised System suitability requirements and allowable chromatographic system adjustments</li><li>and more</li></ul><blockquote>Presenter: Dr. Manoj Kumar Singh (Senior Vice President, Microlabs Analytical Research Lab)Dr. Manoj K Singh hold over 30 yrs of professional experience of working with global pharma companies leading their Analytical labs to support different pharma work-flows.He holds a Ph.D. degree (Chemistry).He started his professional career in 1993 with Wockhardt and spent significant tenure at major pharma R&amp;Ds like Lupin, Novartis, Orchid, Dabur &amp; Sentiss Pharma.Currently he is associated with MicroLabs Bangalore as Senior Vice President (ADL) leading team of Analytical Chemistry scientists to support formulation development, Validations and method transfer.Presenter: Dr. Kuldeep Sharma (Sales Development Manager - Pharma, Agilent Technologies)Kuldeep Sharma has over 19 years of experience in area/s of Bioanalytical research, Drug metabolism &amp; pharmacokinetics and Pharma regulatory compliance. He has accomplished PhD in Biotechnology. His professional journey covers over 12 years in Analytical research (associated with R&amp;D’s of Zydus Cadila, Lambda, Pliva and Jubilant Biosys) and last 7 years in analytical instruments sales, marketing &amp; business development. With over 21 research articles published in international Journals, He presents convention of continues learning.</blockquote>

Agilent: Enhance Lab Productivity While Meeting Regulatory Requirements: USP 621 Decoded

USP 621 Decoded

Enhance Lab Productivity While Meeting Regulatory Requirements

This webinar is the first part in a three-part series called "A Systematic UHPLC / HPLC Method Development Strategy with Complementary Stationary Phases to Maximize Selectivity and Resolution." Each part is about 20min long.In this seminar, we review the importance of chromatographic selectivity in RPLC from a theoretical and practical perspective and how this relates to analyte resolution for method development. An overview of the method development workflow is discussed.<blockquote>Presenter: Gemma Lo (Portfolio Manager Avantor)</blockquote>

MAC-MOD ANALYTICAL: Understanding Chromatographic Selectivity

Understanding Chromatographic Selectivity

We review the importance of chromatographic selectivity in RPLC from a theoretical and practical perspective and how this relates to analyte resolution.

LCMS webinars focusing on HPLC - page 18