Expression and regulation of Bim protein in chronic myelogenous leukemia

VernacularTitle:慢性粒细胞性白血病中Bim蛋白表达及调控研究
Author: Lanying FENG ; Wenye HUANG
Publication Type:Journal Article
Keywords: chronic myelogenous leukemia; cell apoptosis; Bim protein
From: Journal of China Pharmaceutical University 2009;40(6):571-575
CountryChina
Language:Chinese
Abstract: Aim: To investigate the expression and the regulation of Bim protein in leukemic cell of patient with chronic myelognous leukemia(CML). Methods: The primary leukemic cells from the peripheral blood or bone marrow of patients with CML were isolated and cultured. The expression of Bim in the present or absence of ima-tinib(BCR/ABL inhibitor) was detected by the Western blotting, immunohistochemical analysis and real-time quantitative PCR. Results: Bim was consecutively expressed in normal bone marrow, but significantly decreased in the bone marrow of patients with CML( P < 0. 05). Imatinib significantly enhanced Bim mRNA transcription and expression in the manner of time- and dose-dependence. Moreover, there was reverse correlation between Bim protein level and the percent of leukemic cell in bone marrow( r =0. 849 1, P <0. 05). Conclusion: Bim is the Bcl-2 family pro-apoptitic factor. The decreased expression of Bim could be vital in the CML, Bim protein up-expression following the suppression of BCR/ABL might be of importance in investigation of the Bim-induced ap-optosis for potential clinical therapy.