Distinction of G0 cells from senescent cells in cultures of non-cycling human fetal lung fibroblasts by anti-MAP-1 monoclonal antibody staining.

Abstract:

:On staining with a monoclonal antibody raised against microtubule-associated protein-1 (MAP-1), dot-like structures were seen in the nuclei of interphase cells, but not in those of non-cycling G0-arrested cells. Dots were also not seen in the nuclei of non-cycling senescent human cells (IMR-90). A SV40-DNA-transformed subline of IMR-90 with a limited growth potential showed progressive decrease of cells with nuclei containing dots in the final stage of their lifespan. The dots appeared in G0-arrested IMR-90 cells when these cells were incubated in medium of high osmotic pressure for 3 min. In contrast, no dots appeared in senescent cells or X-ray-irradiated young cells when they were incubated in medium of high osmotic pressure. Thus irreversibly non-cycling cells could be distinguished from G0-phase cells on the level of whole cultures. The results suggest that senescent cells lose their division potential by entering an irreversible cell-cycle stage differing from G0.

journal_name

Exp Cell Res

authors

Ohno T,Kako R,Sato C,Ohkawa A

doi

10.1016/0014-4827(86)90062-5

subject

Has Abstract

pub_date

1986-04-01 00:00:00

pages

309-16

issue

2

eissn

0014-4827

issn

1090-2422

journal_volume

163

pub_type

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