Results 191 to 200 of about 162,668 (303)

A Method for Optical Quantification of Local Oxygen Limitations in Multiphase Bioreactors

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT Spatial oxygen limitation is a major source of physiological stress and metabolic, scale‐dependent heterogeneity in aerobic bioprocesses. In gas‐liquid stirred tank reactors, oxygen availability is governed by hydrodynamics and mass transfer and is therefore inherently non‐uniform.
Ryan Rautenbach   +5 more
wiley   +1 more source

High Cell Density Cultivation of HEK293 Cells Using a 2L Membrane‐Stirred Bioreactor

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT The use of perfusion systems for the continuous cultivation of animal cells at high cell density (HCD) for the production of recombinant proteins, viruses, and viral vectors has many advantages. Besides an enhancement of volumetric productivity and high cell viability, the product quality can be improved through a steady‐state environment ...
Lennart Jacobtorweihe   +5 more
wiley   +1 more source

Scalable Separation and Purification of M13‐Bacteriophage‐Derived Particles Containing Artificial Single‐Stranded DNA Produced by Escherichia coli

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT Single‐stranded DNA (ssDNA) solutions are promising innovations shaping the future of genetic research and medical therapies. In principle, biotechnological mass production of ssDNA can be achieved using Escherichia coli in a high‐cell density fed‐batch process by secreting phagemid particles derived from the filamentous M13 bacteriophages ...
Nathalie Hafner   +4 more
wiley   +1 more source

Whole‐Cell Production of Resolvin E2 and 17R‐Resolvin D5 by a Double‐Oxygenating 15S‐Lipoxygenase With 5S‐Lipoxygenase Activity From Pseudobdellovibrionaceae bacterium

open access: yesBiotechnology and Bioengineering, EarlyView.
A recombinant whole‐cell platform expressing a bacterial 15S‐LOX exhibiting 5S‐LOX activity enabled the stereoselective production of RvE2 and 17R‐RvD5 from 18R‐HEPE and 17R‐HDHA, achieving final concentrations of 0.57 mM and 1.48 mM from 4.0 mM substrates, respectively, under optimized conditions.
Hee‐Gyeong Lee   +2 more
wiley   +1 more source

Programmable three‐state nanoreactor for spatiotemporally controlled tumor therapy

open access: yesBMEMat, EarlyView.
The OMVs are shielded with a biocompatible Da–Ca shell, which prolongs its circulation period and promotes intratumoral accumulation. Importantly, the biocompatible Da–Ca shell can be controllably disintegrated in tumor microenvironment by using laser irradiation, generating in situ hyperthermia and releasing Ca2+.
Guihong Lu   +12 more
wiley   +1 more source

Tailoring drug‐to‐lipid ratio in redox‐responsive lipid‐mimetic prodrug liposomes for superior cabazitaxel delivery and antitumor efficacy

open access: yesBMEMat, EarlyView.
Redox‐responsive lipid‐mimetic prodrug liposomes with high drug‐to‐lipid ratios enhance cabazitaxel delivery, prolong circulation, and enable tumor‐selective drug release for superior antitumor efficacy and safety. Abstract Liposomes represent one of the most extensively investigated nanocarriers in drug delivery.
Shengyao Xu   +16 more
wiley   +1 more source

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