Professor Michaela Rumlová, head of a research group of the National Institute of Virology and Bacteriology at UCT Prague (and Vice-Rector for doctoral studies), holder of a licensed patent &nbsp;for antiretroviral testing assays, and recipient of the Czech Science Foundation’s President’s Award for HIV research, has also become the principal investigator of the bilateral INTER-EXCELLENCE II project “Cellular factors regulating the export and packaging of unspliced ​​retroviral RNA”, starting this year. In this interview, she explains how retroviruses such as HIV “hack” the cell in order to export their own genome from the nucleus into the cytoplasm, and then to the site where it is specifically packaged into nascent viral particles, a key step in viral replication. Her team is collaborating with the NIH (National Institutes of Health) and Rockefeller University to elucidate mechanisms that may help reveal new vulnerable points in the retrovirus replication cycle while simultaneously clarifying related cellular processes.<h5>Could you describe your project and its main objectives?</h5>Retroviruses, such as HIV, are viruses that carry genetic information in the form of RNA; however, after entering a cell, they are able to reverse transcribe it into DNA and integrate it into the host genome. In order to replicate, they must transport their genetic information—in the form of unspliced RNA—from the nucleus into the cytosol. There, it serves both as a template for the production of viral proteins and as the genome of new viral particles. This is highly unusual, as the cell very carefully controls which RNA molecules are allowed to leave the nucleus. Normal protein-coding cellular RNAs, known as messenger RNAs (mRNAs), must undergo splicing—a processing step in which certain segments are removed—before being exported. When this process fails, mRNA that retains these segments is held back in the nucleus as part of quality control and subsequently degraded. Retroviruses have managed to outwit this cellular control machinery, allowing their unspliced RNA to pass into the cytoplasm.Our project focuses on identifying the cellular proteins that assist retroviruses in this step and on the mechanism by which protein complexes bound to viral RNA are remodelled during RNA transport. The goal is to understand how the virus uses cellular mechanisms to its advantage and how this pathway is linked to the subsequent fate of the RNA, i.e. to its translation and packaging into new viral particles.<h5>Why is this export of unspliced ​​RNA so important for retroviral replication?</h5>Because this RNA has a dual role for the virus. On the one hand, it serves as a template for synthesizing viral proteins in the cytoplasm; on the other, it represents the genetic material itself, which must be packaged into new viral particles. The virus must package its RNA genome in its unspliced form, as only this RNA contains essential sequences without which further viral replication would be impossible.Simply put: the virus needs to get a complete copy of its genetic instructions out of the nucleus. Once the viral RNA is in the cytoplasm, it can be used as a template for synthesizing viral proteins; and a portion of these RNA molecules is then selected and packaged into a new particle as a genome. We are interested in how the virus forces the cell to allow viral RNA that is, from the cell’s perspective, “unfinished,” that is unspliced, to leave the nucleus. We are also investigating how the cell and the virus together - albeit unintentionally from the cell’s perspective - determine which RNA molecule will be translated into proteins and which will be packaged as the genome. This is one of the key, yet still not fully understood, steps of retroviral replication.<h5>What do you think it was about your project that impressed the Ministry of Education, Youth and Sports’ jury the most?</h5>I believe the decisive factor was a combination of several elements. First, the reviewers were primarily interested in the scientific problem itself. We are investigating a mechanism that is essential for retroviruses, but still not sufficiently understood, which may also have broader implications for the regulation of cellular processes. In addition, the quality of the team, our strong collaboration with the NIH and Rockefeller University, and the use of modern methods that will allow us to track viral RNA in great detail also played a role. It was also important that the project has clear objectives and a realistic plan.<h5>How will this research contribute to the development of new treatments for retroviral infections?</h5>It is important to say that this is primarily basic research. Rather than developing a new drug directly, we are trying to understand, at the molecular level, the step that the virus cannot do without. Only when we fully understand the mechanism of these cellular processes and identify the essential factors for the export of unspliced ​​RNA and how they function, will we be able to better determine which interactions or mechanisms represent potentially vulnerable points. Similar mechanisms associated with the export of unspliced ​​mRNA also appear in some diseases, such as cancer, so I &nbsp;see the benefit of our research mainly in that it will refine our understanding of these pathological processes in the cell, and retroviruses help us do so. Therefore, our work on retroviruses not only shows us how the virus works, but also how the cell itself works.<h5>What responsibilities does your UCT Prague team have? How does the collaboration with your American partners work?</h5>At UCT Prague, we are conducting the project’s primary experimental work. Our research involves cell cultures, viral models, and various biochemical techniques ranging from immunochemistry to microscopy that allow us to track viral RNA and identify its cellular partners. In collaboration with colleagues from NIH, Frederick, we are developing single-particle tracking methods to observe viral RNA movement in living cells across both space and time. Furthermore, we are working with colleagues from Rockefeller University to employ iCLIP methods for the precise mapping of protein-binding sites on RNA. Both collaborations are valuable to us, because they are not just about data sharing, but also about the transfer of expertise and detailed know-how.<h5>Who else is collaborating on the project?</h5>At UCT Prague, we collaborate closely with the Department of Biotechnology and the Department of Biochemistry and Microbiology. Externally, we work with colleagues from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague) and the Central European Institute of Technology in Brno (CEITEC). Our research naturally necessitates the integration of diverse fields of expertise; it requires combining virology, cell biology, and biochemistry with advanced imaging and modern approaches to study RNA-protein interactions. This is exactly what makes our project capable of addressing complex questions that a single laboratory cannot tackle on its own.<h5>Are there plans to continue the project? Have you brought on new collaborators, and are you looking to welcome new colleagues to the team?</h5>Yes, definitely. In basic research, it often happens that one answered question opens up several more. High-quality, properly interpreted data provide a foundation you can build on — and that is what moves scientists forward. It is already clear that the topic of retroviral RNA export and packaging has broader implications and may reveal more general principles of how RNA functions within the cell. We also hope the project will be attractive to students, as it connects classical molecular biology, biochemistry, and virology with cutting-edge biotechnological methods. Students are already involved in the project as part of their bachelor’s and master’s theses.<h5>What was the personal turning point that motivated you to pursue a long-term investigation into retroviral particles?</h5>I first encountered retroviruses in the early 1990s during my diploma thesis, when I was working at IOCB Prague on HIV-1 protease inhibitors. At that time, AIDS could not yet be effectively treated, and retrovirus research had a completely different dimension. From the very beginning, I was fascinated by how such a relatively small and simple virus can outsmart evolutionarily highly optimized cellular processes and turn them to its own advantage. And that has never stopped fascinating me. From a scientific point of view, retroviruses are remarkable; just consider one of their enzymes, reverse transcriptase, without which no diagnostic or research laboratory in the world could function today. Without it, it would be impossible to diagnose RNA viruses like SARS-CoV-2, influenza, or HIV using RT-PCR tests, or, for example to produce recombinant human proteins in bacterial cells.

Tracking unspliced RNA: Professor Rumlová studies how retroviruses “hack” cells

High-performance liquid chromatography (HPLC) remains one of the most widely used analytical techniques for separating, identifying, and quantifying compounds in complex mixtures. Successful HPLC method development depends not only on selecting the correct column and optimizing the mobile phase composition, but also on choosing the appropriate detector. Even a perfectly optimized chromatographic separation provides little value if the detection system cannot properly capture and interpret the analytes of interest.In many ways, the detector acts as the “vision system” of the chromatograph. It converts separated compounds into measurable electronic signals, allowing analysts to identify components and determine their concentrations. The choice of detector therefore has a major impact on sensitivity, selectivity, robustness, and the overall quality of analytical data.This article provides an overview of the most common HPLC detection techniques, discusses their strengths and limitations, and outlines the most important criteria to consider when selecting a detector for a specific analytical task.<h3>HPLC Detection Technologies</h3>HPLC detectors are typically divided into two major categories:<ol><li>Specific detectors (solute-property detectors)</li><li>Bulk property detectors</li></ol>Specific detectors respond to a particular chemical or physical property of the analyte. Ideally, their signal is largely unaffected by changes in mobile phase composition. Common examples include UV/Vis detectors, fluorescence detectors, and mass spectrometers.Bulk property detectors, on the other hand, measure differences between the pure mobile phase and the mobile phase containing analytes. These detectors are considered more universal because they respond to properties shared by many compounds. Refractive index detectors are among the best-known examples, alongside conductivity and light-scattering detectors.Both detector categories have important advantages depending on the application, sample type, and analytical goals.<h3>Common Detector Types Used in HPLC</h3>A wide variety of detectors are available for HPLC systems, ranging from highly universal devices to extremely selective and sensitive technologies.Common detector options include:<ul><li>UV/Vis detectors</li><li>Diode array detectors (DAD/PDA)</li><li>Fluorescence detectors</li><li>Refractive index detectors (RID)</li><li>Conductivity detectors</li><li>Evaporative light scattering detectors (ELSD)</li><li>Charged aerosol detectors (CAD)</li><li>Mass spectrometry detectors (MS)</li></ul>Each technology offers a different balance of sensitivity, selectivity, robustness, operational complexity, and cost.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Detector_overview_with_characteristics_Graphic_by_KNAUER_84b0dd30b1.jpg" alt="KNAUER: Detector overview with characteristics. Graphic by KNAUER." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Detector_overview_with_characteristics_Graphic_by_KNAUER_84b0dd30b1.jpg 245w," sizes="100vw" width="1293" height="596"><h3>Selecting the Right HPLC Detector</h3>There is no universally ideal detector for all HPLC applications. The best choice depends on several factors, including analyte chemistry, matrix complexity, required detection limits, and instrument compatibility.Careful detector selection is essential for obtaining reliable and meaningful analytical results.The following considerations can help guide the selection process.<h4>1. Chemical and Physical Properties of the Analytes</h4>The chemical nature of the compounds being analyzed is one of the most important selection criteria.Questions to consider include:<ul><li>Do the analytes contain chromophores?</li><li>Are the compounds naturally fluorescent?</li><li>What is their polarity?</li><li>What is their molecular weight?</li><li>Are they volatile or non-volatile?</li></ul>Compounds containing UV-active groups are often well suited for UV/Vis detection, while fluorescent molecules can benefit from the high sensitivity of fluorescence detectors. Non-UV-active compounds may require universal detection approaches such as CAD, ELSD, or mass spectrometry.<h4>2. Required Sensitivity</h4>Detector sensitivity determines the minimum concentration that can be reliably detected and quantified.Routine quality control analyses often rely on UV/Vis detectors because they provide sufficient sensitivity for many applications while remaining relatively simple and cost-effective. However, trace-level analysis or highly complex matrices may require more advanced technologies such as:<ul><li>Fluorescence detection</li><li>Charged aerosol detection</li><li>Mass spectrometry</li></ul>These techniques offer significantly lower detection limits and greater analytical specificity.<h4>3. Detector Linearity</h4>Linearity describes how well detector response correlates with analyte concentration across a defined range.A detector with strong linearity ensures accurate quantification and simplifies calibration procedures. Poor linearity can introduce quantification errors, especially when analyzing samples across broad concentration ranges.<h4>4. Dynamic Range</h4>Dynamic range refers to the concentration interval over which the detector can reliably measure analytes.Applications involving samples with highly variable concentrations require detectors capable of maintaining accurate response over a broad range. A wide dynamic range reduces the need for repeated dilutions or multiple analytical runs.<h4>5. Selectivity</h4>Selectivity defines the detector’s ability to distinguish target analytes from other matrix components.This factor becomes particularly important for complex samples containing many interfering substances. Highly selective detectors reduce the risk of overlapping signals and false positives.Mass spectrometry is often advantageous when dealing with unknown compounds or highly complicated sample matrices because it provides structural information in addition to quantitative data.<h4>6. Budget Considerations</h4>Detector cost is another practical factor that laboratories must evaluate.UV/Vis and refractive index detectors are generally among the more economical choices, making them attractive for routine analyses and standard applications.More sophisticated technologies such as fluorescence detection, CAD, or mass spectrometry typically require:<ul><li>Higher initial investment</li><li>Additional maintenance</li><li>More complex infrastructure</li><li>Greater operational expertise</li></ul>However, the overall value of the detector should always be considered in relation to analytical performance requirements and long-term application needs.<h4>7. Instrument and Mobile Phase Compatibility</h4>The selected detector must be compatible with the operational conditions of the HPLC system.Important parameters include:<ul><li>Flow rate range</li><li>Pressure limitations</li><li>Mobile phase composition</li><li>Solvent compatibility</li></ul>Some detectors are highly sensitive to mobile phase composition or gradient changes, while others tolerate a broader range of operating conditions.Ensuring proper compatibility helps prevent baseline instability, signal interference, and reduced detector performance.<h4>8. Destructive vs. Non-Destructive Detection</h4>Another important consideration is whether the analytical workflow involves only detection or also preparative purification.Non-destructive detectors allow collected fractions to remain intact after detection, which is highly beneficial for preparative chromatography and purification workflows.Destructive detectors, by contrast, consume or alter the sample during measurement and are therefore more suitable for analytical applications where sample recovery is not required.<h4>9. Reliability and Ease of Operation</h4>Practical usability is often just as important as analytical performance.Some detectors are designed for straightforward plug-and-play operation, while others require:<ul><li>Frequent calibration</li><li>Specialized maintenance</li><li>Dedicated gas supplies</li><li>Vacuum systems</li><li>Advanced operator expertise</li></ul>Laboratories should evaluate the available technical support, user experience, and maintenance capabilities before implementing more sophisticated detection technologies.Reliable operation and manageable maintenance requirements can significantly improve laboratory productivity and reduce downtime.Choosing the correct HPLC detector starts with understanding both the sample and the analytical objective. Rather than selecting a detector simply because it is available, laboratories should ensure that the technology aligns with the chemistry of the analytes, required performance characteristics, and workflow demands.In many cases, combining multiple detectors within a single HPLC system can provide even greater analytical insight by delivering complementary information from the same chromatographic separation.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/KNAUER_Flow_scheme_for_detector_selection_Graphic_by_KNAUER_486004045f.jpg" alt="KNAUER: Flow scheme for detector selection. Graphic by KNAUER." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_KNAUER_Flow_scheme_for_detector_selection_Graphic_by_KNAUER_486004045f.jpg 245w," sizes="100vw" width="1316" height="808">Interested in learning more? Future articles will explore individual HPLC detection techniques in greater detail, including their operating principles, application areas, and practical advantages for different analytical workflows.

A comprehensive guide for selecting the appropriate HPLC detector

News from LabRulezLCMS Library - Week 20, 2026

Article

Product

Application

Scientists

Science and research

The University of Chemistry and Technology, Prague is a natural centre of first-rate study and research in the area of chemistry in Czechia and is one of the country's largest educational and research institutions focused on technical chemistry, chemical and biochemical technologies, material and chemical engineering, food chemistry, and environmental studies.

UCT Prague

Everything from the world of analytical chemistry in one place. We connect people in solving their problems. At Labrulez you will find all the necessary information easily, quickly and clearly. Stop searching and start finding.

LabRulez

Based in Berlin, KNAUER is a medium-sized, owner-managed company that has been serving the sciences since 1962. We develop and manufacture scientific instruments of superior quality for liquid chromatography, including: Analytical HPLC/UHPLC, Preparative HPLC, Fast protein liquid chromatography (FPLC), Multi-column chromatography/Simulated moving bed (SMB) chromatography. High pressure dosing, in-line detection systems, and osmometry are additional business areas.

KNAUER

Tosoh Bioscience

Separation Science

Agilent Technologies

Technology Networks

MAC-MOD ANALYTICAL

Phenomenex

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>
</ul>
<blockquote>
Prezenter: Andrea Gheduzzi (Principal LC Market Dev. Manager, EMEA, Waters Corporation)
</blockquote>
<blockquote>
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.
</blockquote>
<blockquote>
Prezenter: Tobias Langrock (Senior Application Specialist Chemistry Europe, Waters)
</blockquote>
<blockquote>
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.
</blockquote>
<h4>What&#39;s next?</h4>
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
<ul>
<li>Tuesday, May 07, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - Sample Preparation: Tips &amp; Tricks to make it simple
<ul>
<li>Wednesday, June 05, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - Theory of Liquid Chromatography
<ul>
<li>Wednesday, July 03, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - Basics of Liquid Chromatography
<ul>
<li>Tuesday, September 10, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - Analytical Method Development
<ul>
<li>Wednesday, October 02, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - The importance of Compliance
<ul>
<li>Tuesday, October 22, 2024, 11:00 AM CEST</li>
</ul>
Back to Basics - Introduction to Mass Spectrometry
<ul>
<li>Wednesday, November 13, 2024, 11:00 AM CET</li>
</ul>
Back to Basics - Troubleshooting your LC and MS Systems
<ul>
<li>Tuesday, December 10, 2024, 11:00 AM CET</li>
</ul>
Not sure to be able to attend live sessions?
Register today and watch the webinars on-demand

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)

Join us for an exclusive two-day event where Agilent will showcase cutting-edge biopharma solutions.
The first day of the event we will explore Agilent’s comprehensive portfolio for the spectrum of applications from drug discovery to quality control. Learn more about our cell analysis and genomics expertise and the tools we provide to drive IVT mRNA development, protein therapeutics and cell and gene therapies
The second day will focus on advanced analytical solutions, including HRMS for tRNA sequencing and LC/MS for DNA/RNA analysis. Learn how to scale up oligonucleotide purification with Agilent biocolumns, which enhance the efficiency and accuracy of your processes.
By attending this event you will:
<ul>
<li>Gain insights from Agilent to optimize biotherapeutic workflows, including rigorous quality testing in cGMP environments and handling nucleic acid, vaccines, mAB and protein samples.
</li>
<li>Understand how metabolic analyses can impact CAR cell function and behavior, using cytolytic cell killing assays on the xCELLigence system to develop cell therapy processes and confirm product potency.
</li>
<li>Learn about new techniques in high-resolution LC/MS for analyzing tRNA modifications.
</li>
<li>Discover software tools available for high-resolution MS systems in both research and QA/QC labs.
</li>
<li>Compare analytical and semipreparative LC purification methods for synthetic oligonucleotides, gaining competitive insights into purification strategies.
</li>
</ul>
<h5>Talk 1: Advanced Analytical Solutions for Nucleic Acid Analysis and Purification</h5>
<ul>
<li>Presented by Dr. Charlotte Lekieffre, Biopharma Application Specialist, Agilent Technologies</li>
</ul>
The emphasis during the second day of the Summit will be on advanced analytical solutions, such as HRMS for tRNA sequencing and LC/MS for DNA/RNA analysis. Additionally, you’ll discover techniques to enhance the efficiency and accuracy of your processes by scaling up oligonucleotide purification using Agilent biocolumns. 
<h5>Talk 2: Extracted Yeast tRNA Sequencing by LC-MS/MS</h5>
<ul>
<li>Presented by Aurore Attina, Engineer of Mass Spectrometry, University of Montpellier</li>
</ul>
RNA modifications are essential for RNA stability, maturation, and functionality; directly influencing protein translation and gene regulation. They play a central role in various biological processes and are associated with many diseases, including cancers and neurological disorders. tRNA (transfer RNA), which plays a key role in protein synthesis, is the most modified molecule in the organism known to date. tRNA modifications are essential to ensure their correct function in protein translation, maintain the accuracy and fidelity of the genetic code, and enable flexible adaptation to changing cellular conditions and are therefore a crucial attribute to monitor. To monitor and map these modifications of tRNA, we have developed a LC-HRMS analytical workflow, first using synthetic oligonucleotide for the method optimization. In this webinar, we will first go through the various steps involved in LC-MS/MS method optimization using synthetic oligonucleotides. In a second part, we will present the protocol development of an enzymatic digestion applied to tRNA extracted from yeast. This digestion generates oligonucleotide fragments that can be analyzed by LC-MS/MS for sequence confirmation.
<h5>Talk 3: Discover Agilent’s Software Tools to Confirm Oligonucleotide Sequence Integrity</h5>
<ul>
<li>Presented by Dr. Holger Stalz, LC/MS Product Specialist Austria &amp; Switzerland, Agilent Technologies</li>
</ul>
Mass spectrometry (MS) is increasingly important for the development of therapeutic modalities such as oligonucleotides. A common analytical method for large molecules is intact mass by LC/MS. This can be used for the characterization and identification of a product or process-related impurities, or simply as a confirmation of molecular weight. The newly introduced Agilent OpenLab CDS 2.8 SW version comes with a set of features to enable the automatization of biopharma workflows. If you want to know how LC/MSD Spectral Deconvolution of your biopharma samples can be automated, we will provide answers during our presentation. Even more details on Oligonucleotide sequence confirmation and impurities characterization can be acquired using the power of a high-resolution accurate mass system (HRAM) on the Agilent 6545XT AdvanceBio LC/Q-TOF. Analyzing the sample data with the software workflows in Agilent BioConfirm version 12 will support the user to get the trusted answers to their most relevant questions.
<h5>Talk 4 Maximize Your Resources and Simplify Scale-up with AdvanceBio Oligonucleotide Columns</h5>
<ul>
<li>Presented by Dr. Andrea Tripodi, Application Development Engineer, Agilent Technologies</li>
</ul>
Several classes of nucleic acids, such as antisense oligonucleotides, small interfering RNAs (siRNAs), and aptamers are being investigated for potential therapeutic applications. Synthetic oligonucleotides inevitably contain many impurities due to limitations in the efficiency of each chemical reaction used during manufacture. They include deletion sequences (missing one or more nucleotides) and reaction by-products often arising during the final deprotection or cleavage steps. Ion pair reversed-phase (IP-RP) chromatography stands out as the prevalent method for analyzing and purifying oligonucleotides. For increased resolution and separation of your full-length synthetic oligonucleotide from closely related impurities, AdvanceBio Oligonucleotide is the ideal choice. The latest developments include semi-preparative, and lab-scale preparative columns packed with superficially porous particles that provide excellent performance and resolution without compromising column loading. A fast and easy scale-up method from analytical to semi-preparative scale was successfully achieved using a 10 mm ID column enabling higher sample loading using the same analytical LC instrument.

Technology Networks: Biopharma Innovations Summit

Biopharma Innovations Summit Day 2

Learn more about our cell analysis and genomics expertise and the tools we provide to drive IVT mRNA development.

In the second part of the stationary phases webinars, we look at other separation modes: IEX, SEC, ligand exchange and HILIC and what we think they are best suited for.<blockquote>Presenter: Cecilia Mazza (Product Specialist, EMEA IDO - Chemistries &amp; Suppliers, Agilent)With more than 20 years of professional experience, Cecilia is presently the Product Specialist for columns and supplies at Agilent. Supporting distributors and laboratory users in the analysis and purification of small and large molecules, for a wide range of LC and GC applications as well as sample preparation.Cecilia holds a Ph.D. in Chemical Engineering from Rensselaer Polytechnic Institute in US.</blockquote>

Agilent Technologies: HPLC Beginner Webinar Series

Stationary Phases in HPLC - Part II

We look at other separation modes: IEX, SEC, ligand exchange and HILIC and what we think they are best suited for.

The allowable adjustments to compendial methods published in USP General Chapter 621 and Ph. Eur. 2.2.46 provide scope for analysts to migrate methods to smaller column dimensions, providing advantages in terms of time and cost savings.This webinar will provide insight into the considerations necessary when applying allowable adjustments to gradient monographs.<h4>Key Learning Points:</h4><ul><li>Learn about Allowable adjustments possible when working with gradient monograph methods</li><li>Understand system considerations in terms of dwell volume</li><li>Dig into calculations to perform in order to scale gradient conditions correctly</li></ul><h4>Who Should Attend:</h4><ul><li>Any analysts working with pharmacopeia methods or chromatographers who work with gradient methods&nbsp;</li></ul><blockquote>Presenter: James Turner (Global Market Manager, Phenomenex)With more than 25 years of experience at Phenomenex, James has been responsible for providing specialist technical support to customers across Europe with method development assistance, troubleshooting advice and chromatographic solutions to various customer problems. James has also been involved with the technical training of many Phenomenex technical consultants, across the multiple techniques we serve.</blockquote>

Phenomenex: Working with Allowed Adjustments Pharmacopeia HPLC Methods – Gradient Considerations

Working with Allowed Adjustments Pharmacopeia HPLC Methods – Gradient Considerations

Insight into the considerations necessary when applying allowable adjustments to gradient monographs.

Working with Allowed Adjustments Pharmacopeia HPLC

This comprehensive webinar will equip you with the knowledge and skills needed to excel in N-glycan analysis, from sample preparation to data interpretation.Enhance your understanding of the latest tools Agilent offers to address your biotherapeutic characterization needs.<h4>By attending this webinar, you will:</h4><ul><li>Understand the significance of N-glycans &nbsp;</li><li>Learn about the latest N-glycan sample preparation techniques &nbsp;</li><li>Understand how to select the right columns and perform HILIC separations &nbsp;</li><li>Analyze data with the new Glycan Peak Assignment Tool</li></ul><blockquote>Presenter: Tom Rice (Bioconsumables Product Manager, Agilent Technologies)Tom Rice is the Bioconsumables Product Manager at Agilent Technologies, coming to Agilent through the acquisition of ProZyme in 2018. Prior to joining Agilent, he held various sales and marketing roles within ProZyme beginning in 2014. Much of Tom’s work, both at ProZyme and Agilent, has been focused on bringing innovative glycobiology solutions to biopharma customers. Tom is based in California and holds a B.S. from Sonoma State University.Presenter:&nbsp;Randall Robinson (Research and Development Scientist, Chemistries and Supplies Division at Agilent Technologies)Randall Robinson is a Research and Development Scientist in the Chemistries and Supplies Division at Agilent. Prior to joining Agilent in 2021, Randall completed his PhD in food chemistry with a focus on developing analytical techniques to characterize bioactive oligosaccharides in milk and dairy streams. Since joining Agilent, he has contributed to the design of numerous products utilized for N-glycan analysis, including the HILIC column described in this presentation.</blockquote>

Separation Science: Streamlining N-Glycan Analysis: A Complete Workflow from Agilent

Streamlining N-Glycan Analysis: A Complete Workflow from Agilent

Learn about the latest N-Glycan sample preparation techniques.

Streamlining N-Glycan Analysis: A Complete Workflow

PFAS testing has become one of the most important topics facing food and environmental laboratories over the last two years.&nbsp;Phenomenex and SCIEX have worked with collaborators to overcome the significant challenges of such analyses, and now offer extremely sensitive and robust LC-MS/MS and sample preparation solutions, with methods and software which are ready to implement.<h4>Key Learning Points</h4><ul><li>Background to PFAS and their regulations</li><li>System Settings and requirements</li><li>Correct HPLC column choice</li><li>Sample Preparation strategies from various matrices</li><li>PFAS as ubiquitous contaminants - Inerting the system</li><li>A sensitive and robust method applicable to water and food sample</li><li>Some insight about designed for PFAS products</li></ul><h4>Who should attend</h4><ul><li>LC/MS or Sample Prep Users, working with several matrices that want to get tips on PFAS method development or on improving their method.</li></ul><blockquote>Presenter: Jianru Stahl-Zeng, Dr.&nbsp; (Senior Technical Marketing Manager EMEAI, SCIEX)Jianru has been part of SCIEX since 2001. She initially was part of our application Support team and covered not only proteomics but also small molecules applications. Jianru moved to technical marketing and focused on Food and Environmental applications.Since 2018, she is managing the EMEAI technical marketing team and projects. Jianru is also the Global Technical Leader for Food and &nbsp;Environmental application.Presenter:&nbsp;Duilio Romanello (Senior Technical Specialist, Phenomenex)Duilio has been working with Phenomenex since 2008. Since 2010 he has been Product Specialist for the GC and SPE lines and then Account Manager for the South of Italy. Since November 2023 he is covering the role of Senior Technical Specialist.He has acquired experience in the Food and Environmental sectors by collaborating with important companies in the industry and providing technical support for the development of method optimization, guidance on applications and troubleshooting, assistance in choosing columns for HPLC, Gas Chromatography (GC), SFC and SPE.</blockquote>

Phenomenex: Advanced strategies in LC/MS/MS for the clean-up and the analysis of per- and polyfluoroalkyl substances (PFAS) in various matrices

Advanced strategies in LC/MS/MS for the clean-up and the analysis of per- and polyfluoroalkyl substances (PFAS) in various matrices

Extremely sensitive and robust LC-MS/MS and sample preparation solutions, with methods and software which are ready to implement.

Advanced strategies in LC/MS/MS for the clean-up

<h4>Overview</h4>We invite you to our 2nd Annual Virtual Biosymposium. This year, we will explore novel analytical characterization and quantitation of emerging modalities, such as DNA and mRNA, along with key method development considerations with global thought leaders.We look forward to seeing you! Key Event Objectives:<ul><li>Learn about novel approaches to characterizing established and modern biotherapeutic modalities</li><li>Understand key considerations when developing characterizing and quantitating methods for biomolecules</li><li>Take a deep dive into the values of fit-for-purpose methods to make critical drug decisions</li></ul>AGENDA7:30am AM (PT) - Welcoming Introductions<ul><li>Tran N. Pham, Global Biopharma Market Development Manager at Phenomenex</li></ul>7:35 AM (PT) - "Solutions &amp; Characterization Strategies for IVT mRNA Therapy Development"<ul><li>Charles Bai, Lead Application Scientist, VectorBuilder, Chicago, USA</li></ul>8:05 AM (PT) - &nbsp;"Utilizing Size Exclusion Chromatography for the Quality Control Analysis of Gene Therapeutics”<ul><li>Rebecca Hirschberger, QC Manager Bioanalytical Implementation, and Dr. Christopher Gawlig, QC Manager Research and development, Biospring, Germany</li></ul>8:35 AM (PT) "Impurity Profiling Optimization of GalNAc-conjugated Oligonucleotides by LC-MS-UV"<ul><li>Roxana Eggleston-Rangel, Senior Applications Scientist, Phenomenex, California, USA</li></ul>9:05 AM (PT) – Round Table Q&amp;A<ul><li>Tran N. Pham, Global Biopharma Market Development Manager at Phenomenex</li></ul>9:25 AM (PT) – Closing Remarks<blockquote>Presenter: Charles Bai (Lead Application Scientist)Charles has received his PhD in Microbiology at Purdue University. As a Lead Application Scientist at VectorBuilder, his main responsibilities are to provide technical consultation for clients regarding gene delivery using viral and non-viral vectors. Regarding the application of in vitro transcribed (IVT) RNA, Charles has been helping researchers with the design, production and encapsulation of IVT mRNA, circRNA or saRNA for therapy and vaccine development.Presenter: Rebecca Hirschberger (Quality Control Bioanalytical Method Development)Rebecca has been in the chromatography industry for over 2 years and has practical experience in the quality control of gene therapeutics. She has earnt a Masters in pharmaceutical science from Ludwig-Maximilians University, Munich, focused on instrumental analytics. Since Dezember 2022 she is a licensed Pharmacist in Germany. Rebecca Hirschberger joined BioSpring in August of 2021 and she serves as QC Manager Bioanalytical Implementation. Her area of responsibility includes: Various analyses of oligonucleotides, including (tandem) mass spectrometry via qToF, biochemical techniques, i.e. ELISA, enzymatic transformation of oligonucleotides for analytical and quality control purposes and the Separation of oligonucleotides by chromatographic methods.Presenter: Roxana Eggleston-Rangel (Senior Applications Scientist, Phenomenex)Roxana joined Phenomenex in 2018 as an Applications Scientist and is currently working with the applications team to produce analytical solutions for scientist in the biopharma industry. Roxana’s current work focuses on characterization of mRNA, sgRNA and siRNA. Prior to Phenomenex, Roxana worked for Caltech and the University of Southern California developing LM-CS workflows for the proteomics community. Roxana Eggleston-Rangel received her bachelor’s and master’s degree in Chemistry and Biochemistry from California State University, Los Angeles.</blockquote>

Phenomenex: 2nd Annual Virtual Biosymposium

2nd Annual Virtual Biosymposium

Explore novel analytical characterization and quantitation of emerging modalities, such as DNA and mRNA

With an understanding of selectivity, and using a variety of chromatographic data, we discuss phase design principles and how it is possible to introduce functionality to enhance selectivity through different mechanisms such as hydrophobicity, π-π, dipole-dipole and shape selectivity interactions.This webinar is the second part in a three-part series by Gemma Lo, called "A Systematic UHPLC / HPLC Method Development Strategy with Complementary Stationary Phases to Maximize Selectivity and Resolution."Each part is about 20min long.Presenter: Gemma Lo

MAC MOD Analytical: Utilizing Stationary Phase Design in Method Development

Utilizing Stationary Phase Design in Method Development

We discuss phase design principles and how it is possible to introduce functionality to enhance selectivity through different mechanisms.

<h5>Who Should Attend:</h5><ul><li>Any HPLC scientists beginning with method development&nbsp;or working with small molecules in pharmaceutical labs &nbsp;</li></ul><h5>Key Learning Points:</h5><ul><li>Learn about selectivity benefits of phenyl phases during reversed-phase HPLC</li><li>Review mobile-phase optimization when using a phenyl column</li><li>Examine a thorough comparison of different phenyl phases with a C18 phase</li></ul><blockquote>Presenter: Zachary Woodward (Senior Technical Specialist, Phenomenex)Zachary Woodward is a Senior Technical Specialist with Phenomenex, Inc, assisting laboratories with method development in the bio-pharma, environmental, and food industries. &nbsp;Zachary spent his formative years developing HPLC and GC methods with a pharmaceutical lab in Albany, NY, after which he developed HPLC and SPE methods in the clinical setting here in Southern California. &nbsp;Zachary received his B.Sci. in Chemistry from the College of William and Mary, was awarded his Master’s in Chemistry at San Diego State University, and is happy to speak with you today!</blockquote>

How to Choose a Phenyl Phase

Learn about selectivity benefits of phenyl phases during reversed-phase HPLC. Review mobile-phase optimization when using a phenyl column.

Christian Rohrer, Director Sales and Support at Tosoh Bioscience GmbH, will present the next edition of Tosoh Tuesday, a webinar series held by Chromatography Experts.&nbsp;Analytical scientists are faced with the task of finding the right column from an almost unmanageable range of products. On Tuesday, October 22, Andrea Krumm, Product Manager Analytical Columns at Tosoh Bioscience, will focus on columns that enable protein analysis under native conditions through size exclusion, hydrophobic interaction and ion exchange chromatography. We will highlight the different column characteristics (pore size, particle size, base matrices, column dimensions, ligands) and which questions will help you decide which columns to use.After the webinar, ask your questions during the live Q&amp;A session.<blockquote>Presenter: Andrea Krumm (Product Manager Analytical Columns at Tosoh Bioscience)</blockquote>

Tosoh Bioscience: How to select (U)HPLC columns for protein analysis?

How to select (U)HPLC columns for protein analysis?

Columns that enable protein analysis under native conditions through size exclusion, hydrophobic interaction and ion exchange chromatography

LCMS webinars focusing on Columns - page 9