Effect of hypoosmotic pressure on cell growth and antibody production in recombinant Chinese hamster ovary cell culture

Cited 21 time in webofscience Cited 0 time in scopus
  • Hit : 227
  • Download : 0
To determine the response of recombinant Chinese hamster ovary (rCHO) cells subjected to hypoosmotic pressure, rCHO cells (CS13*-1.0) producing a chimeric antibody were cultivated in the hypoosmolar medium resulting from NaCl subtraction. At hypoosmotic pressure, CS13*-1.0 cells displayed decreased specific growth rate (μ) and increased specific antibody productivity (qAb). When the medium osmolality was decreased from 300 mOsm kg (physiological osmolality) to 150 mOsm kg, μ was decreased by 68% and qAb was increased by 128%. To understand the mechanism of enhanced qAb resulting from hypoosmotic pressure, cellular responses of cells in the exponential phase of growth were observed at the transcription level. Total cytoplasmic RNA content per cell at 150 mOsm kg was increased by 140%, compared with that at 300 mOsm kg. On a per μg RNA basis, immunoglobulin (Ig) mRNA levels at 150 mOsm kg were comparable to those at 300 mOsm kg, indicating that hypoosmotic pressure did not lead to the preferential transcription of Ig mRNAs. Taken together, the data obtained here suggest that the increase in total RNA pool is primarily responsible for the enhanced qAb of CS 13*1.0 cells subjected to hypoosmotic pressure.
Publisher
Springer Netherlands
Issue Date
2001-04
Language
English
Article Type
Article; Proceedings Paper
Keywords

HYBRIDOMA CELLS; OSMOTIC-PRESSURE; GLYCINE BETAINE; HYPEROSMOTIC STRESS; PRODUCTION KINETICS; BATCH CULTURE; TRANSFECTOMA; OSMOLARITY; METABOLISM

Citation

CYTOTECHNOLOGY, v.36, no.1-3, pp.61 - 69

ISSN
0920-9069
DOI
10.1023/A:1014032701800
URI
http://hdl.handle.net/10203/85659
Appears in Collection
BS-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 21 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0