Results 201 to 210 of about 4,374,244 (257)

Autonomous Control of Gene Expression Using Endogenous Transcription Signals

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Autonomous cell‐based control of heterologous gene expression can simplify batch‐culture bioprocessing by eliminating external monitoring and extrinsic control of culture conditions. Existing approaches use auto‐induction media, synthetic cell‐cell communication systems, or application‐specific biosensors.
Pakpoom Subsoontorn, Drew Endy, Olivier Borkowski   +2 more
wiley   +1 more source

Immobilization of Alginate Microbeads With Whole‐Cells Expressing Nitrilase for Continuous Nicotinic Acid Production in Chip Millireactor

Biotechnology and Bioengineering, EarlyView.
ABSTRACT The biocatalytic production of nicotinic acid using nitrilases has emerged as a promising alternative to conventional chemical synthesis, offering improved selectivity and environmental sustainability. In this study, we developed a continuous‐flow millireactor system employing Escherichia coli cells expressing a nitrilase from Paraburkholderia
Jonathan Bassut, Emina Mehić, Luana Cuvillier, Carine Vergne‐Vaxelaire, Jean‐Louis Petit, Maïté Michaud, Zoé Anxionnaz‐Minvielle, Anne Zaparucha, Guillaume Nonglaton   +8 more
wiley   +1 more source

Identification of Putative Cellulose Synthase Gene xcsA2 Required for c‐di‐GMP‐Induced Biofilm Formation and Cell Aggregation in Synechococcus elongatus PCC 7942

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Synechococcus elongatus PCC 7942 is a widely used model cyanobacterium for diverse research fields and for bioproduction applications owing to its ease of cultivation, genetic modification, and ability to fix CO2. We found that a laboratory strain of S. elongatus PCC 7942 expressing the ydeH gene from E.
Chihiro C. Yamaguchi, Jiro F. Mori, Shinsuke Kutsuna, Robert A. Kanaly   +3 more
wiley   +1 more source

Isolation and Characterization of Random Citrate Synthase Variants That Increase Acetate Generation by Escherichia coli

Biotechnology and Bioengineering, EarlyView.
ABSTRACT A method to select Escherichia coli citrate synthase variants having reduced activity was developed based initially on the increased generation of acid, observed visually by prolonged color change in the pH indicator bromocresol purple. Five hundred fifty‐two potential variants were isolated and each were cultured on glucose as sole carbon ...
Jeffrey K. Dodelin, Ronnie L. Fulton, Abigail E. Rose, Mark A. Eiteman   +3 more
wiley   +1 more source

Next‐Generation Glutamine Synthetase Expression Vector for Therapeutic Protein Manufacturing Using CHO Cells

Biotechnology and Bioengineering, EarlyView.
ABSTRACT The glutamine synthetase expression system is widely used for therapeutic protein biomanufacturing in Chinese hamster ovary (CHO) cells. Here, we present the design of an enhanced glutamine synthetase vector for generating CHOK1SV GS‐KO stable pools that produce recombinant proteins at multigram‐per‐liter levels. We first developed a synthetic
Yusuf B. Johari, Sophie J. Wensley, Malak A. Ammar, Avinash Srivastava, Changhavi Ragurajan, Jenish Patel, Natalie C. Elliott, Alice C. Hodgson‐Casson, Mariano Olivera Fedi, Michael Anbar, Peter M. O'Callaghan, Bernie Sweeney   +11 more
wiley   +1 more source

Advanced In Vitro Platforms for Experimental Liver Research: From Organoids and Liver‐on‐Chip to Omics and Artificial Intelligence

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Hepatocytes perform essential physiological functions in the human body. Gaining more profound insight into the liver structure, diseases, and physiology by using in vitro models can help to propose more relevant clinical applications. Conventional in vitro liver models, such as two‐dimensional (2D) cell cultures, fail to adequately replicate ...
Seyedeh Kiana Teymorian, Pedram Asadi Sarabi, Abbas Piryaei, Massoud Vosough   +3 more
wiley   +1 more source

Nuclease‐Free Scalable Purification of Physalis Mottle Virus‐Like Particles Expressed in Escherichia coli

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Plant virus‐like particles (VLPs) are promising nanotechnology platforms, but their translation requires purification strategies suitable for large‐scale production. Here, we developed a nuclease‐free downstream process for Physalis mottle virus (PhMV) VLPs expressed in Escherichia coli, combining ammonium sulfate precipitation, low‐pH ...
Sean K. Hsu, Patrick Opdensteinen, Tariq Hussain, Nicole F. Steinmetz   +3 more
wiley   +1 more source

Efficient Cell Removal and Impurity Reduction for Poxvirus Purification in a Single Step Alluvial Filtration

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Modified Vaccinia virus Ankara (MVA) is a potent vector for the development of vaccines and novel cancer treatment strategies. Since it is a non‐replicating virus in human recipients, high infective titers are required for therapeutic efficacy.
Linus G. Weber, Caroline Stephan, Georgios Makris, Leander John, Ingo Jordan, Michael W. Wolff   +5 more
wiley   +1 more source

Serotype‐Tailored Midstream and Downstream Operations to Advance the Manufacturing of Adeno‐Associated Viral Vectors

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Adeno‐associated viruses (AAVs) are the leading vectors for in vivo gene therapy, fueling a growing demand for scalable and robust biomanufacturing processes. Yet, the impact of cell lysis conditions on the performance of midstream and downstream unit operations across serotypes remains poorly characterized.
Arianna Minzoni, Shriarjun Shastry, Eduardo Barbieri, Morgan R. Hurst, Kelvin Idanwekhai, Yuxuan Wu, Katherine Ernst, Wai‐Keen Chung, Christopher Bombeck, Saad A. Khan, Sushmita Koley, Gabriella Kiss, Oliver Rammo, Alexander Tropsha, Cristiana Boi, Michael A. Daniele, Steven Cramer, Barry Byrne, Stephen Kaminsky, Angie Snell Bennett, Stefano Menegatti   +20 more
wiley   +1 more source

Induction Temperature and Feeding Profile Shape the Partitioning Between Soluble Product and Inclusion Body Formation in Escherichia coli

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Inclusion body (IB) processes yielding the recombinant product only as IBs are long‐established in the biopharmaceutical industry. Yet, for recombinant proteins that accumulate both IBs and soluble fraction depending on the selected upstream processing (USP) strategy, the influence of process parameters on the partitioning between both forms ...
Mohamed Elshazly, Lisa Ying, Florian Gisperg, Robert Klausser, Eva Prada Brichtova, Noah Schütz, Oliver Spadiut, Julian Kopp   +7 more
wiley   +1 more source