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@article{971687, author = {Preclíková, H. and Bryja, Vítězslav and Pacherník, Jiří and Krejčí, Pavel and Dvořák, Petr and Hampl, Aleš}, article_number = {9}, keywords = {MESSENGER-RNA; STEM-CELLS; CDK INHIBITOR; GROWTH ARREST; TUMOR-CELLS; P19 CELLS; P27(KIP1)}, language = {eng}, issn = {1044-9523}, journal = {Cell Growth and Differentiation}, title = {Early cycling-independent changes to p27, cyclin D2, and cyclin D3 in differentiating mouse embryonal carcinoma cells.}, volume = {130A}, year = {2002} }
TY - JOUR ID - 971687 AU - Preclíková, H. - Bryja, Vítězslav - Pacherník, Jiří - Krejčí, Pavel - Dvořák, Petr - Hampl, Aleš PY - 2002 TI - Early cycling-independent changes to p27, cyclin D2, and cyclin D3 in differentiating mouse embryonal carcinoma cells. JF - Cell Growth and Differentiation VL - 130A IS - 9 SP - 421-430 EP - 421-430 SN - 10449523 KW - MESSENGER-RNA KW - STEM-CELLS KW - CDK INHIBITOR KW - GROWTH ARREST KW - TUMOR-CELLS KW - P19 CELLS KW - P27(KIP1) N2 - Changes to cell cycle-regulating machinery that occur during differentiation of cells are thought to be responsible mostly for withdrawal from cycling. Here, embryonal carcinoma (EC) cell lines were found that differ in their basal levels of p27 inhibitor of cyclin-dependent kinases but not in their growth rates' distribution of cells in phases of cell cycle, and their ability to differentiate. High basal levels of p27 did not substitute for upregulation of p27 that in EC cells normally occurs early after entering a differentiation pathway. Under both standard and differentiation-supporting culture conditions, variances in the levels of p27 were strictly followed by variances in the levels of cyclins D2 and D3. In EC cells genetically manipulated to overexpress p27 protein, cyclin D3 became up-regulated and vice versa. Supposedly, titration of p27 by D-type cyclins, which prevents its inhibitory action toward cyclin-dependent kinase 2, allows for the maintenance of elevated p27 in proliferating EC cells. Increased levels of p27 in early embryonal cells thus may, at least in certain phases of embryo development, serve a differentiation-associated, rather than proliferation-associated, function. ER -
PRECLÍKOVÁ, H., Vítězslav BRYJA, Jiří PACHERNÍK, Pavel KREJČÍ, Petr DVOŘÁK a Aleš HAMPL. Early cycling-independent changes to p27, cyclin D2, and cyclin D3 in differentiating mouse embryonal carcinoma cells. \textit{Cell Growth and Differentiation}. 2002, roč.~130A, č.~9, s.~421-430. ISSN~1044-9523.
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