Growth and death behaviour of anchorage-independent animal cells immobilized within porous support matrices.
Appl Microbiol Biotechnol
; 37(2): 244-51, 1992 May.
Article
em En
| MEDLINE
| ID: mdl-1368243
ABSTRACT
Growth and death of anchorage-independent animal cells entrapped within porous biomass support particles (BSPs) in static or shake-flask cultures were evaluated by comparison of enzyme activity with non-immobilized cells grown under static culture using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay and release of lactate dehydrogenase into the culture medium. Mouse myeloma MPC-11 (ATCC CCL 167) cells inoculated within porous polyvinyl formal resin BSPs (3 x 3 x 3 or 2 x 2 x 2 mm; mean pore diameter, 60 microns) grew exponentially at a specific growth rate comparable to that of non-immobilized cells in the initial period of incubation. Entrapped cells then reached the stationary phase with a cell density over 10(7) cells/cm3 BSP. The death rate of entrapped cells increased in response to the rise in viable cell density in the BSPs. Observation of viable cell distribution within the BSPs using MTT staining indicated that the cells concentrated within a thin outer shell of the BSPs with time. After the immobilized cells reached the stationary phase, penetration of cells into the outer shell ceased and heterogeneous distribution of cell density occurred in the viable cell layer in the shake-flask culture.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Células Tumorais Cultivadas
/
Divisão Celular
/
Morte Celular
Limite:
Animals
Idioma:
En
Revista:
Appl Microbiol Biotechnol
Ano de publicação:
1992
Tipo de documento:
Article
País de afiliação:
Japão