Seminars & Webinars
2023
Event: Cell and Gene Therapy Insights Webinar
Date: July 26, 2023
Presenter: Andreja Gramc Livk, Sartorius BIA Separations
Adeno-associated viruses (AAVs) are widely used vectors for gene therapies mainly due to their favorable safety profile and high transduction efficiency to various target tissues. With increasing demand for faster process development of advanced therapies using AAVs, rapid at-line analytical chromatographic solutions are becoming indispensable.
PATfix analytical system with multiple detectors seamlessly delivers coherent process information, considerably speeding up process development and enabling a fast-paced delivery of the product to the market.
Analytical methods, embedded in the PATfix system that enables at-line monitoring of common product and process related impurities, provide a critical platform for the rapid development and characterization of AAV-based gene therapy vectors.
Event: mRNA Applications in Discovery & Development
Date: June 20, 2023
Presenter: Rok Sekirnik, Sartorius BIA Separations
This talk presents case studies of leveraging the power of at-line HPLC monitoring for process development to increase purity and yield of mRNA production. It describes approaches to optimize plasmid purification and linearization, IVT reaction and mRNA purification, including purification methods to achieve more than 95% supercoiled plasmid purity, optimize linearization reaction, and increase of IVT reaction yield from 3-5 mg/mL to 10-12 mg/mL. Further, use of at-line analytics to monitor automated, continuous production in single use bioreactors to produce multi-gram amounts of mRNA are demonstrated. Oligo dT-based affinity purification is described with approaches to optimize dynamic binding capacity to reach up to 6 g/L. Multimodal chromatography and reverse-phase chromatography cases are discussed for capture of non-polyadenylated RNA, and removal of dsRNA.
Event: Cell and Gene Therapy Insights webinar
Date: April 5, 2023
Presenter: Rok Žigon, Head of Product-Application Area (AAV/Adeno), Process Development Viruses
Adeno-associated virus (AAV) is go-to vector for gene therapy treatments. In each AAV downstream process, one of the key and often a bottleneck step is enrichment of full capsids. Along with scalability and capsid’s separation challenges one must account for sample heterogeneity and asses which analytics are adequate to distinguish between AAV sub-populations to deliver only the potent AAV product.
Chromatography on monolith columns offers efficient and scalable downstream processes. Case study using Design-of-experiment approach of buffer selection and robust preparation for improved separation of empty and full capsids will be presented along with paramount considerations for scaling up. In addition, residual host cell proteins, host cell DNA, plasmid DNA, and endotoxin removal efficiency will be discussed.
Event: Cell and Gene Therapy Insights webinar
Date: March 1, 2023
Presenter: Blaž Bakalar, Product Manager PATfix platform
mRNA-based therapeutics represent a promising new modality for therapies and vaccines. However, industry-wide process understanding of the CQA and CPP interplay is still developing. As such, the lack of immediate feedback on the process state during process optimization, sometimes delayed by weeks and limited by throughput, represents a big bottleneck in mRNA commercialization. The PATfix mRNA analytical platform enables reliable at-line insight during process development and production of mRNA-based therapeutics. With an ability to resolve key IVT reaction components (NTPs, capping reagent, template and mRNA), both USP and DSP process insight can be gained, with a single analytical tool. The PATfix mRNA platform has been upgraded to include LNP encapsulation analytics, enabling at-line monitoring of a crucial process step on the path from mRNA drug substance to LNP drug product.
Presenter: Blaž Bakalar, Product Manager PATfix platform
Date: February 15, 2023
Event: 2nd mRNA Analytical Development Summit 2023
Abstract:
- PATfix mRNA analytical platform is a perfect tool for process developers looking to optimize their mRNA production and purification
- Three orthogonal analytical methods based on mix-mode, affinity and reverse phase allow for precise quantification and mRNA sample characterization
- The newly developed method for characterization of encapsulated mRNA molecules covers the last crucial part in mRNA therapeutic production
Attachments
2022
Speaker: Rok Sekirnik, Head Process Development for mRNA and pDNA
The recently demonstrated efficacy of mRNA-based Covid-19 vaccines has shown the promise of this therapeutic format, but also highlighted the need for higher efficiency of mRNA production to meet enormous needs for global vaccine supply. The production process typically involves 10-15 steps including plasmid production, plasmid linearization, an in vitro transcription (IVT) reaction, mRNA purification, and lipid nanoparticle (LNP) production. This webinar will discuss the versatility of chromatography as applied to mRNA production, starting with the purification of the key raw material (plasmid DNA) to final polishing of mRNA drug substance.
Speaker: Katja Vrabec, Project Manager
The development of fast and efficient processes for the isolation of extracellular vesicles (EVs) depends on the availability of chromatography media that meet the special fractionation needs of these products and analytical methods for process monitoring. Convective Interaction Media (CIM®) monolithic columns offer high binding capacities and low shear stress conditions for the purification of large biologics such as EVs. Multiple-detector PATfix™ technology was developed for monitoring sample composition and product detection in upstream and downstream processes. We will present the EV isolation process from clarified conditioned media and fractionation using CIMmultus™ chromatography columns. Testing of the raw materials, analysis of upstream samples produced in different cell lines, and analysis of downstream samples were performed using PATfix™ analytical approaches. The composition of EV populations was monitored through the detection of tetraspanins using immunofluorescent labelling and SEC analytics. High-throughput analysis of in-process samples and impurity composition was monitored using CIMac™ anion exchange columns.
Speaker: Mojca Tajnik Sbaizero, Project Manager
rAAV downstream process using monoliths contains a series of steps that are mutually dependent. Therefore each step should be optimized for sufficient outcome. Standard 96-well design offers a great advantage for screening many samples and conditions. It supports small sample intake and process automatization. We will present example of multi-parallel screening of different mobile phases for rAAVcapture step using CIM SO3 0.05 mL Monolithic 96-well Plates. Optimization of capture step leads to increased process productivity and product purity, as well as improves later polishing step. High vector recovery and greater reduction of impurities were confirmed on preparative scale chromatography resulting in successful implementation of screening tools for process development optimization.
Speaker: Rok Sekirnik, Head Process Development for mRNA and pDNA
The recently demonstrated efficacy of mRNA-based Covid-19 vaccines has shown the promise of this therapeutic format, but also highlighted the need for higher efficiency of mRNA production to meet enormous needs for global vaccine supply. The production process typically involves 10-15 steps including plasmid production, plasmid linearization, an in vitro transcription (IVT) reaction, mRNA purification, and lipid nanoparticle (LNP) production. This webinar will discuss the versatility of chromatography as applied to mRNA production, starting with the purification of the key raw material (plasmid DNA) to final polishing of mRNA drug substance.
Event: Cell and Gene Therapy Insights webinar
Date: June 7, 2022
Presenter: Nejc Pavlin
Pre-developed and validated PATfix analytical methods using different column chemistries enable:
- Effective control over linear plasmid upstream and downstream,
- IVT reaction optimization for mRNA synthesis,
- Control of yield, purity and downstream process of mRNA,
- mRNA formulation and stability analysis,
- Scale-up optimization.
In this webinar, will discuss a robust analytical tool PATfix™ platform, and its specific methods for pDNA and mRNA analytics that enable efficient monitoring of key upstream and downstream process steps will be showcased.
Event: Cell and Gene Therapy Insights webinar
Date: April 12, 2022
Presenter: Rok Sekirnik, Head of Process Development, mRNA/pDNA
Key learning points:
- Benefits of implementing HPLC-based analytics in mRNA production workflow
- Principles of monolith chromatography and its use for mRNA analytics and purification
- Principles of IVT reaction and factors affecting rate and yield
- Principles of conversion from batch to fed-batch process
Event: Informa 1-day digital event, highlighting mRNA Applications and Therapeutics
Date: March 23, 2022
Presenter: Tomas Kostelec, Technology & Business Development Manager
Key learning points:
- Ensuring consistent and robust IVT production of mRNA
- Achieving high yield and high purity in mRNA purification processes
- Chromatography solutions for in process analytics and purification
Event: LCGC Live Webcast
Date: March 17, 2022
Presenters:
Rok Zigon, Project Manager; Process Development Dept.
Blaz Goricar, Project Manager; Process Analytical Technology Dept.
Key learning points:
- Rapid downstream process of AAV using monoliths, with emphasis on PATfix analytical tools
- Orthogonal analytics are paramount for AAV characterization
- Integration using PATfix enables fast evaluation of empty-full ratio
Event: BPI Ask the Expert
Date: March 3, 2022
Speaker: Rok Sekirnik, Head Process Development for mRNA and pDNA
In this webinar, we will discuss an HPLC-based analytical method using a multimodal ligand based on anion exchange/hydrogen-bonding ligand (PrimaS) to monitor the IVT reaction, which allows for simultaneous quantification of NTPs, capping reagent, plasmid, and mRNA within 3.5 min.
Event: Cell and Gene Therapy Insights webinar
Date: February 17, 2022
Presenter: Ales Strancar, Managing Director
Key learning points:
- One of the key challenges in manufacturing viral vectors is to increase the ratio between empty and full capsids.
- When the expression in the cell line results in less than 10% full capsid it is quite impossible to reach better than 90% full in the final product. It is therefore mandatory to optimise the USP to result in better empty/full ratio.
- This can be efficiently realised by using at-line PATfix to allow for analysis of the full and empty capsids ratio directly in the harvest.
- The residual empty capsids can be removed by polishing step using different anion exchange columns.
Event: mRNA-Based Therapeutics Summit Europe
Date: January 2022
Presenter: Rok Sekirnik, Head of Process development for mRNA and pDNA
Abstract:
In vitro-transcribed messenger RNA-based therapeutics represent a relatively novel and highly efficient class of drugs. Current clinical efforts encompassing mRNA – based drugs are directed to three categories: mRNA vaccine, mRNA therapy and protein replacement therapy. As mRNA vaccine became the front runner to fight the COVID-19 pandemic, challenges surrounding their process development and manufacturing became readily apparent:
- mRNA manufacturing is not yet a platform approach. Standardized products along the processes are needed
- mRNA is a relatively large molecule, which leads more challenges for downstream purification.
- mRNA is intrinsically unstable and prone to degradation.
- High raw material cost is limiting mRNA commercialization.
This presentation provides a detailed overview of current mRNA manufacturing approaches, highlights challenges and recent successes, and offers perspectives on the future of mRNA manufacturing.
2021
Published: Cell & Gene Therapy Insights 2021; 7(12), 1661
Date: December 20, 2021
Presenter: Maja Leskovec, Head of Process Development Viruses (viral vectors and vaccines)
Watch the video or read the poster to learn:
- Importance of sample pretreatment before first chromatographic step
- Rapid downstream process of AAV with emphasis on chromatographic step of CIMmultus SO3 capture
- Three different ligands full enrichment of AAV
- Why orthogonal analytics is the key in downstream development and what are the options
Attachments
Published: Cell & Gene Therapy Insights 2021; 7(11), 1409
Date: December 2, 2021
Presenter: Rok Sekirnik, Head Process development for mRNA and pDNA
Watch the video or read the poster to learn:
- Non-affinity chromatography with PrimaS provides purification for IVT processes with co-transcriptional polyadenylation
- The Sartorius mRNA purification toolbox provides a scalable chromatographic solution for commercial manufacturing of mRNA therapeutics
- CIMac analytical HPLC columns can resolve individual IVT reaction components in minutes, resolving the analytical bottleneck in optimization of IVT reaction conditions
- Rapid HPLC analytics can improve in-process and quality control of the mRNA production process
Attachments
Published: Cell & Gene Therapy Insights 2021; 7(10), 1437
Date: November 15, 2021
Presenter: Nejc Pavlin, Project Manager in Process Analytics Development department
Watch the video or read the poster to learn:
- The importance of pDNA as an enabling product in the production of mRNA, AAV, and other therapeutic vectors
- How the PATfix™ pDNA platform using CIMac™ pDNA column offers fast and efficient solution for problems related to pDNA upstream and downstream processes
- How the PATfix™ pDNA platform can be used to optimally adjust pDNA production and purification procedures of pDNA according to your needs, increasing pDNA yield and purity and reducing the cost of its production
Attachments
Presenter: Ivana Petrović Koshmak, PhD
Event: Late Stage Bioprocessing & Viral Vectors 2 11 November 2021
Date: November 3, 2021
Abstract:
Adeno associated virus (AAV) is the leading vector in the field of gene therapy because of its low toxicity, good overall safety profile, and ability to maintain stable expression for long periods of time. It is therefore crucial to develop a robust and high efficiency platform for its manufacturing.
One of the key challenges in manufacturing viral vectors is to increase the ratio between empty and full capsids. The most efficient way is to design the USP to result in less than 10% of empty capsids. This can be realised by process optimisation using at-line PATfix analytics to allow for analysis of the full and empty capsids ratio during the virus expression.
Fast and reliable at-line analytical methods to allow for process optimisation USP and DSP, and assessing the purity of the final product using PATfix system will be presented.