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The Role of Protein p27Kip1 in the Cell Cycle and its Staining Patterns inLymphoid Tissues, Especially in B-Cell Non-Hodgkin Lymphomas (a Review)


Authors: L. Boudová;  T. Vaněček;  R. Šíma;  J. Bouda 1;  O. Hes;  F. Fakan
Authors‘ workplace: Šiklův patologicko-anatomický ústav, Fakultní nemocnice a Lékařská fakulta Univerzity Karlovy, Plzeň 1Gynekologicko-porodnická klinika, Fakultní nemocnice a Lékařská fakulta Univerzity Karlovy, Plzeň
Published in: Čes.-slov. Patol., , 2003, No. 3, p. 126-129
Category:

Overview

Cell cycle progression is governed by cyclin dependent kinases (CDK) that are activated by cyclinbinding and inhibited by CDK inhibitors. Protein p27Kip1 functions as a CDK inhibitor, whichcontrols the progression from G1 to S phase. Further, p27Kip1 may have a positive regulativeinfluence. In nonneoplastic tissues and in the majority of tumors investigated so far, the immunohistochemicalpositivity of p27Kip1 showed an inversely proportional relationship to the proliferationindex. Among B-cell non-Hodgkin lymphomas, the exceptions to this rule are represented bymantle cell lymphoma, hairy cell leukemia, and the immunoblastic Epstein-Barr virus latentmembrane antigen positive diffuse large B-cell lymphoma in AIDS patients. The loss of p27Kip1expression is a negative prognostic factor in numerous tumors, including the majority of B-celllymphomas.

Key words:
protein p27Kip1 - cell cycle - lymphoid tissue - B-cell lymphoma

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