Curatolo L, Erba E, Morasca L. Culture conditions induce the appearance of immortalized C3H mouse cell lines.
IN VITRO 1984;
20:597-601. [PMID:
6500597 DOI:
10.1007/bf02619607]
[Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Mouse fibroblasts were cultured by three different procedures: (a) changing the 0.2 ml/cm2 of growth medium every 2nd d and seeding 1 X 10(5) cells/cm2 after confluency; (b) changing the 0.4 ml/cm2 of growth medium only at subculture performed at confluency by a 1:2 split and keeping the bottles incubated on a rocking platform; (c) the same as Method b but keeping the bottles stationary throughout culture. By Method a no lines were immortalized over 36 experiments whereas Method b gave 1/4 immortalized lines and Method c gave 10:12 immortalized lines. Cells always went into crisis at the 9th to 11th doubling. Immortalized lines had a tetraploid DNA content.
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