title: Relationship between tissue plasminogen activator production and specific growth rate in Chinese hamster ovary cells cultured in mannose at low temperature.
abstract: Chinese hamster ovary (CHO) cells, producing human recombinant tissue plasminogen activator (tPA), were grown with mannose (5, 20 and 40 mM) instead of glucose at 31, 33 and 37 degrees C. The highest tPA concentration (1.5 mg l(-1) at 144 h of cultivation) and tPA specific production rate (47 ng 10(-6) cell h(-1)) were obtained at 31 degrees C and 40 mM mannose. Regardless of the temperature or mannose concentration used, an inverse relationship between the specific growth rate and tPA specific production rate was observed, suggesting that tPA production rate would be directly controlled by the growth rate.
authors: Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2147, Casilla, 4059, Valparaíso, Chile.
authors: Julio
authors: J
authors: Berrios
authors: Alvaro
authors: A
authors: Díaz-Barrera
authors: Consuelo
authors: C
authors: Bazán
authors: Claudia
authors: C
authors: Altamirano
mesh_terms: D000818:Animals; D016466:CHO Cells; D049109:Cell Proliferation; D006224:Cricetinae; D003412:Cricetulus; D003470:Culture Media / Q000737:chemistry; D005260:Female; D006801:Humans; D008358:Mannose / Q000378:metabolism*; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000235:genetics; D013223:Statistics as Topic; D013696:Temperature; D010959:Tissue Plasminogen Activator / Q000096:biosynthesis* / Q000235:genetics
chemical_list: D003470:Culture Media; D011994:Recombinant Proteins; D010959:Tissue Plasminogen Activator; D008358:Mannose