About
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When SOS was first created in 2014, the organization had a goal of making travel abroad opportunities more attainable for San Antonio students. In…
When SOS was first created in 2014, the organization had a goal of making travel abroad opportunities more attainable for San Antonio students. In…
Liked by Brian O'Mara
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The BioNTX Facilities Advisory Committee joined with NexPoint and the Texas Research Quarter to welcome industry and regional innovators for a…
The BioNTX Facilities Advisory Committee joined with NexPoint and the Texas Research Quarter to welcome industry and regional innovators for a…
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I was honored to participate in the 2024 ISPE Biotechnology Conference. Thanks to all that attended and contributed!
I was honored to participate in the 2024 ISPE Biotechnology Conference. Thanks to all that attended and contributed!
Liked by Brian O'Mara
Experience & Education
Publications
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Single-stage chromatographic clarification of Chinese Hamster Ovary cell harvest reduces cost of protein production
Biotechnology Progress
A single-stage clarification was developed using a single-use chromatographic clarification device (CCD) to recover a recombinant protein from Chinese Hamster Ovary (CHO) harvest cell culture fluid (HCCF). Clarification of a CHO HCCF is a complex and costly process, involving multiple stages of centrifugation and/or depth filtration to remove cells and debris and to reduce process-related impurities such as host cell pro- tein (HCP), nucleic acids, and lipids. When using depth filtration, the…
A single-stage clarification was developed using a single-use chromatographic clarification device (CCD) to recover a recombinant protein from Chinese Hamster Ovary (CHO) harvest cell culture fluid (HCCF). Clarification of a CHO HCCF is a complex and costly process, involving multiple stages of centrifugation and/or depth filtration to remove cells and debris and to reduce process-related impurities such as host cell pro- tein (HCP), nucleic acids, and lipids. When using depth filtration, the filter train consists of multiple filters of varying ratios, layers, pore sizes, and adsorptive properties. The depth filters, in combination with a 0.2-micron membrane filter, clarify the HCCF based on size-exclusion, adsorptive, and charge-based mechanisms, and provide robust bio- burden control. Each stage of the clarification process requires time, labor, and utilities, with product loss at each step. Here, use of the 3MTM Harvest RC Chromatographic Clarifier, a single-stage CCD, is identified as an alternative strategy to a three-stage fil- tration train. The CCD results in less overall filter area, less volume for flushing, and higher yield. Using bioprocess cost modeling, the single-stage clarification process was compared to a three-stage filtration process. By compressing the CHO HCCF clarifica- tion to a single chromatographic stage, the overall cost of the clarification process was reduced by 17%–30%, depending on bioreactor scale. The main drivers for the cost reduction were reduced total filtration area, labor, time, and utilities. The benefits of the single-stage harvest process extended throughout the downstream process, result- ing in a 25% relative increase in cumulative yield with comparable impurity clearance.
Other authorsSee publication -
Impact of Depth Filtration on Disulfide Bond Reduction during Downstream Processing of Monoclonal Antibodies from CHO Cell Cultures
Biotechnology and Bioengineering
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Development of a Pareto Optimization Algorithm for the Downstream Process Development of a Monoclonal Antibody
HTPD International Conference, Avignon, France, June, 2012. (Extended Abstract)
Other authors -
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Glycine to glutamic acid misincorporation observed in a recombinant protein expressed by Escherichia coli cells
Protein Sciences
Other authors -
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A Tris (2-Carboxyethyl) Phosphine (TCEP) Related Cleavage on Cysteine-Containing Proteins
American Society for Mass Spectrometry
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Characterization of S-thiolation on secreted proteins from E. coli by mass spectrometry
Rapid Communications in Mass Spectrometry
Other authors -
More activity by Brian
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Happy Friday everyone! I am currently sitting at Munich airport reflecting on the learnings, and impressions from the past few days. It was time…
Happy Friday everyone! I am currently sitting at Munich airport reflecting on the learnings, and impressions from the past few days. It was time…
Liked by Brian O'Mara
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Love this. The culture we are creating at Scorpius BioManufacturing, Inc. can’t be found anywhere else. It’s so refreshing to work in this…
Love this. The culture we are creating at Scorpius BioManufacturing, Inc. can’t be found anywhere else. It’s so refreshing to work in this…
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Visit #TeamHPNE at ACHEMA 2024 in Frankfurt along with our Getinge family. Catch Matt Sitcoske and Michael Giuliano at the Getinge booth located in…
Visit #TeamHPNE at ACHEMA 2024 in Frankfurt along with our Getinge family. Catch Matt Sitcoske and Michael Giuliano at the Getinge booth located in…
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It will be great to meet you in San Diego. Also, we are hosting a networking cocktail reception on Wed, June 5th. Please…
It will be great to meet you in San Diego. Also, we are hosting a networking cocktail reception on Wed, June 5th. Please…
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Can't wait to see this unveiling at BIO next week!
Can't wait to see this unveiling at BIO next week!
Liked by Brian O'Mara
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Day 1️⃣ at #BIO is wrapping up! The Scorpius team has a packed rest of the week but we still have a handful of meeting slots open for biotechs…
Day 1️⃣ at #BIO is wrapping up! The Scorpius team has a packed rest of the week but we still have a handful of meeting slots open for biotechs…
Liked by Brian O'Mara
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One of our priorities at @Thermo Fisher Scientific is to support our #pharma partners all over the world as they bring innovative therapies to the…
One of our priorities at @Thermo Fisher Scientific is to support our #pharma partners all over the world as they bring innovative therapies to the…
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We're celebrating our former interns, Caroline Myers and Jake Pap, who have recently graduated and are starting their careers with…
We're celebrating our former interns, Caroline Myers and Jake Pap, who have recently graduated and are starting their careers with…
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