2008
DOI: 10.1007/s10529-008-9852-9
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Production of biomass and recombinant human-like collagen in Escherichia coli processes with different CO2 pulses

Abstract: The evolution of CO(2) in a fed-batch culture of recombinant Escherichia coli containing human-like collagen (HLC) cDNA was determined with an O(2)-enriched air supply (40%, v/v) in a 12.8 l fermentor; a maximum CO(2) concentration of 12.7% in the effluent gas was detected. The CO(2) pulse injection experiments showed that: (1) a 20% CO(2) pulse introduced in the batch cultivation phases inhibited cell growth but if introduced in the fed-batch cultivation phases slightly stimulated growth; and (2) CO(2) inhibi… Show more

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Cited by 9 publications
(3 citation statements)
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References 18 publications
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“…Expressing a fully functional prolyl hydroxylase in E. coli has also been very challenging [40]. Therefore, most work on E. coli produced collagen involves only small functional sections of human collagen, or is on human-like collagen [41][42][43][44]. Relatively little work on recombinant human collagen production has been performed in E. coli as compared with eukaryotic organisms, suggesting challenges, and hence opportunities for research in this area.…”
Section: Shortcomings Of Extracted Collagenmentioning
confidence: 99%
“…Expressing a fully functional prolyl hydroxylase in E. coli has also been very challenging [40]. Therefore, most work on E. coli produced collagen involves only small functional sections of human collagen, or is on human-like collagen [41][42][43][44]. Relatively little work on recombinant human collagen production has been performed in E. coli as compared with eukaryotic organisms, suggesting challenges, and hence opportunities for research in this area.…”
Section: Shortcomings Of Extracted Collagenmentioning
confidence: 99%
“…Se han publicado algunos trabajos en donde se mejora esta tecnología, sobre todo para producir colágeno humano. Entre las estrategias empleadas podemos mencionar el aumento del crecimiento y expresión por medio de variaciones del CO 2 [20] , aumentando la presión para mejorar la transferencia de oxígeno y la optimización de la relación carbono/nitrógeno en el cultivo [21] .…”
Section: Colágenaunclassified
“…More recently, there have been a number of scattered reports on optimization of E. coli for enhanced biomass production of recombinant human-like collagens. These include enhanced growth and expression by controlled CO 2 pulsing (Xue et al 2009), increasing the fermentor pressure and elevating the oxygen transfer rate (Ma et al 2010), medium optimization of the carbon/nitrogen ratio (Guo et al 2010) and assimilation of acetic acid production by glucose starvation (Xue et al 2010). In these limited studies from these Chinese groups, the increase in biomass and product yield has been significant.…”
Section: Expression Of Mammalian Collagenmentioning
confidence: 99%