Ask the Experts Archives - Page 23 of 30 - BioProcess InternationalBioProcess International

Improving CHO Cell Biomanufacturing via Whole Genome CRISPR Screening

This webcast features: Jamie Freeman, PhD, Product Manager, Horizon Discovery While Horizon’s GS knockout CHO K1 cell line is rapidly becoming established as one of the best performing cell lines available for the manufacture of biotherapeutics, there is untapped potential within the CHO system. Horizon is focused on using its expertise in genome engineering techniques to modify CHO cell lines to improve their expression capacity for biomanufacturing. Historically, efforts to increase yield have primarily focused on improving media and feed,…

Ask the Expert on Ceramic Hydroxyapatite Chromatography Media: How to Start

by Mark A. Snyder

Bio-Rad’s CHT Ceramic Hydroxyapatite XT (CHT XT) calcium-affinity cation-exchange chromatography medium is used for purifying numerous types of biomolecules, with single-step clearance of impurities and aggregates in monoclonal antibody (MAb) purification. This is an easy-to-use mixed-mode medium, which is both ligand and support matrix in one. In an “Ask the Expert” webinar on 18 July 2018, Mark Snyder (manager of the process chromatography R&D applications group at Bio-Rad Laboratories) discussed its application and use at process scale, providing guidelines on…

Ask the Expert: Key Considerations for Advanced Therapies Manufacturing

by Thomas C. Page

On 12 September 2018, Thomas Page, PhD (vice president of engineering and asset development at Fujifilm Diosynth Biotechnologies, FDB) shared a brief overview of challenges encountered in manufacturing of advanced biotherapeutics. Page’s Presentation FDB is a contract and development manufacturing organization (CDMO) that uses microbial and mammalian cell lines to produce protein therapeutics as well as viral vaccines and gene therapies. The company’s Center of Excellence for Advance Therapies Manufacturing is located in Texas. FDB set out some years ago…

Ask the Expert: Bioproduction Efficiencies Gained Using ExpiCHO Stable Production Medium

by Shreya Lowmaster

The transition from transient to stable production workflow with Chinese hamster ovary (CHO) cells requires a change in culture medium. On 22 August 2018, Shreya Lowmaster (field applications scientist at Thermo Fisher Scientific) discussed transient to stable solutions for moving from research to commercial production. Lowmaster’s Presentation Researchers are demanding higher titers in transient systems, and many people use CHO systems as an alternative to HEK293 cells. The Thermo Fisher Gibco ExpiCHO Expression System kit was developed for transient expressing…

New High Performance AEX Resin for Large Biomolecule Purification

by BPI Contributor

This webcast features: Jiali Liao, Principal Scientist, Process Chromatography R&D, Bio-Rad Laboratories Large molecule purification can be difficult due to their size. This leads to slow diffusion and mass transfer kinetics of the molecules into the pores of traditional chromatography resins, which decreases their binding capacity and resolution. In this webinar, Dr. Jiali Liao will introduce the design features of the Nuvia HP-Q bead matrix that help overcome these purification challenges. Case studies on plasma protein and virus purification will…

Key Considerations for Advanced Therapies Manufacturing

by BPI Contributor

This webcast features: Thomas Page, PhD, Vice President, Engineering and Asset Development, Fujifilm Diosynth Biotechnologies This technical webinar covers key considerations to support manufacturing activities from the earliest stages of cell line, viral replication platforms and/or viral vectors identification stage leading into clinical production. Having a line of sight into commercial production and the requirements leading into commercial approval are also essential for success. Key messages: Flexibility in conjunction with high containment are key for success Application of closed systems…

Ceramic Hydroxyapatite Chromatography Media – How to Start

by BPI Staff

This webcast features: Dr. Mark A. Snyder, Manager of the Process R&D Applications Group in the Process Chromatography Division of Bio-Rad Laboratories Our newest mixed-mode media, Ceramic Hydroxyapatite XT, is a calcium affinity cation exchange chromatography media. It is used for the purification of numerous types of biomolecules and provides single-step clearance of impurities and aggregates for monoclonal antibody purification. CHT XT is an easy-to-use mixed-mode chromatography media. Unlike other chromatography media it is both the ligand and the support…

Validation of the MycoSeq Mycoplasma Detection Kit for the Release of Veterinary Products

by BPI Staff

This webcast features: Sébastien Lievyns, Scientist, and Dr. Anne Thomas, Senior Principal Scientist, Analytical Sciences, Zoetis This webcast aims to show how Zoetis has validated the MycoSeq kit for the release of animal products. The Analytical Sciences group at Zoetis confirmed the limit of detection at 10 CFU/mL and good repeatability and intermediate precision of the qualitative mycoplasma qrt-PCR method in presence of these products. For direct PCR performed on vaccine, a background amplification is sometimes observed inducing a signal…

KrosFlo KR2i with KONDUiT: Turnkey Benchtop System for Walkaway TFF Automation

by BPI Contributor

This webcast features: Philip Yuen, PhD, Application Scientist, Repligen Perform efficient, fully automated downstream tangential flow filtration with volumes from 1mL to 10 Liters. Fully integrated and easy to use out of the box, the Spectrum® KrosFlo® KR2i TFF System from Repligen is the lowest priced fully automated system available today that delivers precise and reproducible control and documentation of TFF processes. The system is compatible with hollow fiber or flat sheet filters, and offers a number of user-defined set-point…

Ask the Expert: Developing a Whole-Genome CRISPR Screen to Improve Chinese Hamster Ovary Cells for Biomanufacturing

by Jamie Freeman

Great strides have been made in increasing the yield of biotherapeutic proteins mainly through process improvements with a focus on media and feed strategies. But aside from single-gene knockouts to allow for metabolic selection systems, the Chinese hamster ovary (CHO) host cell line remains largely unchanged from what was used 30 years ago. In a webinar on 21 March 2018, Jamie Freeman (product manager at Horizon Discovery) focused on this as a bioproduction application of clustered regularly interspaced short palindromic…