The role of vitamins and amino acids on hybridoma growth and monoclonal antibody production
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Two representatives of a new type of beta-amino acids, carrying two functionalized side chains, one in the 2- and one in the 3-position, have been prepd. stereoselectively: a beta-Ser deriv. with an addnl. CH2OH group in the 2-position, for beta-peptides w ...
Achieving practical biotechnol. processes for the prodn. of fine chems. requires optimization of metabolic fluxes. Attempts to alter the fluxes through a given pathway may be frustrated by compensatory changes in coupled pathways or by unexpected effects s ...
A chemically-defined protein-free medium (FMX-Turbodoma) has been improved for the production of monoclonal IgA antibodies by hybridoma cells, using a systematic method. Cell growth rate, IgA production, activity and molecular weight pattern have been used ...
The puromycin-sensitive aminopeptidase (PSA) is thought to contribute to the degradation of enkephalins. Besides being the most abundant aminopeptidase in the brain, PSA is expressed in other organs as well. From a human fetal brain cDNA library, we have i ...
This contribution presents a simple, unstructured math. model describing microbial growth in continuous culture limited by a gaseous substrate. It has been found that the parameters influencing growth are primarily the gas transfer rate and the diln. rate. ...
Comprehensive and cGMP suitable bioprocess monitoring is still a challenge in microbial fermn. and cell culture process development. This paper discusses the exploitation of in-situ mid-IR spectroscopy in combination with partial least-squares anal. to mon ...
The smaller isoform of the GABA-synthesizing enzyme, glutamic acid decarboxylase 65 (GAD65), is unusually susceptible to becoming a target of autoimmunity affecting its major sites of expression, GABA-ergic neurons and pancreatic β-cells. In contrast, a hi ...
Anti- V.cholerae monoclonal IgA antibodies have been produced using a hybridoma cell line (Zac3) grown in RPMI medium contg. 10% Fetal calf serum (FCS) and a completely defined protein- free medium. The latter has been optimized with respect to amino acid, ...
A review with many refs. Ammonia has been reported to be toxic and inhibitory for mammalian cell cultures for many years. Redn. of growth rates and maximal cell densities in batch cultures, changes in metabolic rates, perturbation of protein processing and ...
The estn. of the intracellular fluxes of mammalian cells using only the mass balances of the relevant metabolites is not possible because the set of linear equations defined by these mass balances is undetd. Either addnl. exptl. flux data or addnl. theor. ...
