Dynamic Feeding for Pichia pastoris.

The knowledge of certain strain-specific parameters of recombinant Pichia pastoris strains is required to be able to set up a feeding regime for fed-batch cultivations. These parameters are commonly determined either by time-consuming and labor-intensive continuous cultivations or by several, consecutive fed-batch cultivations. Here, we describe a fast method based on batch experiments with substrate pulses to extract certain strain characteristic parameters, which are required to set up a dynamic feeding strategy for P.

The impact of technical failures on recombinant production of soluble proteins in Escherichia coli: a case study on process and protein robustness.

Technical failures lead to deviations in process parameters that can exceed studied process boundaries. The impact on cell and target protein is often unknown. However, investigations on common technical failures might yield interesting insights into process and protein robustness.

Depletion of Boric Acid and Cobalt from Cultivation Media: Impact on Recombinant Protein Production with .

The REACH regulation stands for "Registration, Evaluation, Authorization and Restriction of Chemicals" and defines certain substances as harmful to human health and the environment. This urges manufacturers to adapt production processes. Boric acid and cobalt dichloride represent such harmful ingredients, but are commonly used in yeast cultivation media.

Intrinsically Magnetic Cells: A Review on Their Natural Occurrence and Synthetic Generation.

The magnetization of non-magnetic cells has great potential to aid various processes in medicine, but also in bioprocess engineering. Current approaches to magnetize cells with magnetic nanoparticles (MNPs) require cellular uptake or adsorption through manipulation of cells. A relatively new field of research is "magnetogenetics" which focuses on production and accumulation of magnetic material.

IGF1 inclusion bodies: A QbD based process approach for efficient USP as well as early DSP unit operations.

E. coli is an attractive host organism for strong recombinant protein expression. It expresses products either as soluble protein or as inclusion bodies (IB).

The impact of technical failures during cultivation of an inclusion body process.

In biotechnological processes, technical failures in the upstream process often lead to batch loss. It is of great interest to investigate the empirical impact of technical failures to understand and mitigate their impact accurately and reduce economic damage. We investigated the impact in the upstream and downstream of a recombinant antibody fragment inclusion body production process chain to provide integrated empirical data and knowledge.

A fast and simple approach to optimize the unit operation high pressure homogenization - a case study for a soluble therapeutic protein in E. coli.

Escherichia coli is one of the most commonly used host organisms for the production of recombinant biopharmaceuticals. E. coli is usually characterized by fast growth on cheap media and high productivity, but one drawback is its intracellular product formation.

Production of a recombinant peroxidase in different glyco-engineered Pichia pastoris strains: a morphological and physiological comparison.

Background: The methylotrophic yeast Pichia pastoris is a common host for the production of recombinant proteins. However, hypermannosylation hinders the use of recombinant proteins from yeast in most biopharmaceutical applications. Glyco-engineered yeast strains produce more homogeneously glycosylated proteins, but can be physiologically impaired and show tendencies for cellular agglomeration, hence are hard to cultivate.