Title : Cell cycle-dependent vimentin expression in elutriator-synchronized, TPA-treated MPC-11 mouse plasmacytoma cells.

Pub. Date : 1992 May

PMID : 1563479






10 Functional Relationships(s)
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1 Cell cycle-dependent vimentin expression in elutriator-synchronized, TPA-treated MPC-11 mouse plasmacytoma cells. Tetradecanoylphorbol Acetate vimentin Mus musculus
2 A 6-h TPA treatment of G1-phase-enriched cultures induced both a partial G1-phase arrest in the same cycle and a moderate fraction of cells to become vimentin positive. Tetradecanoylphorbol Acetate vimentin Mus musculus
3 However, nearly all cells of the cultures enriched in S- or in G2/M-phase cells could be arrested by TPA treatment at the earliest in the G1 phase of the second cell cycle and displayed higher fractions of positive cells as well as higher average levels of vimentin. Tetradecanoylphorbol Acetate vimentin Mus musculus
4 In terms of fractions of vimentin-positive cells as well as of average cellular vimentin content, the differences between the cultures resembled, albeit on a higher level, those between the respective cultures treated with TPA for 6 h. These observations might explain the striking bimodal distribution of individual cellular vimentin content detectable in G1-phase fractions of asynchronous, TPA-treated cultures. Tetradecanoylphorbol Acetate vimentin Mus musculus
5 In terms of fractions of vimentin-positive cells as well as of average cellular vimentin content, the differences between the cultures resembled, albeit on a higher level, those between the respective cultures treated with TPA for 6 h. These observations might explain the striking bimodal distribution of individual cellular vimentin content detectable in G1-phase fractions of asynchronous, TPA-treated cultures. Tetradecanoylphorbol Acetate vimentin Mus musculus
6 In terms of fractions of vimentin-positive cells as well as of average cellular vimentin content, the differences between the cultures resembled, albeit on a higher level, those between the respective cultures treated with TPA for 6 h. These observations might explain the striking bimodal distribution of individual cellular vimentin content detectable in G1-phase fractions of asynchronous, TPA-treated cultures. Tetradecanoylphorbol Acetate vimentin Mus musculus
7 The pattern of vimentin mRNA accumulation in synchronized cultures after short-term TPA treatment strongly suggests that the cell cycle-dependent pattern of vimentin expression is caused, at least in part, by different levels of vimentin mRNA accumulated in the cells. Tetradecanoylphorbol Acetate vimentin Mus musculus
8 The pattern of vimentin mRNA accumulation in synchronized cultures after short-term TPA treatment strongly suggests that the cell cycle-dependent pattern of vimentin expression is caused, at least in part, by different levels of vimentin mRNA accumulated in the cells. Tetradecanoylphorbol Acetate vimentin Mus musculus
9 Since proteinaceous mediator(s) are obviously involved in TPA-induced vimentin expression in MPC-11 cells, cell cycle-dependent vimentin expression in these cells may be dependent on cell cycle-dependent regulation of the activity and/or concentration of such mediator(s). Tetradecanoylphorbol Acetate vimentin Mus musculus
10 Since proteinaceous mediator(s) are obviously involved in TPA-induced vimentin expression in MPC-11 cells, cell cycle-dependent vimentin expression in these cells may be dependent on cell cycle-dependent regulation of the activity and/or concentration of such mediator(s). Tetradecanoylphorbol Acetate vimentin Mus musculus