阿司匹林誘導(dǎo)EB病毒轉(zhuǎn)化的人B淋巴細胞凋亡
[Abstract]:Objective to investigate the apoptosis of human B lymphocytes transformed by Epstein-Barr virus (EBV) induced by aspirin and its mechanism. Methods Epstein-Barr virus transformed human B lymphocytes were treated with aspirin at a certain concentration. The proliferation of B lymphocytes was analyzed by MTT assay. Then the apoptosis was evaluated by optical microscope, electron microscope, Pi staining, flow cytometry and agarose gel electrophoresis. The protein expression of apoptosis-related protein (mTOR) and PU.1-Bim signal pathway (PU.1-Bim) were detected by immunoblotting. Results Aspirin could inhibit the proliferation of human B lymphocytes transformed by EB virus. Morphologic and ultrastructural observation showed that the cells treated with aspirin had smaller pyknosis, decreased number, nuclear malformation, chromatin marginalization and cytoplasmic vacuolation. Aspirin treatment resulted in increased cell membrane permeability, decreased cell survival and dispersion of cell DNA. Western blot analysis showed that aspirin treatment inhibited the expression of mTOR signal and transcription factor PU.1, and activated the apoptosis-related proteins caspase-3 PARP and Bim. Conclusion Aspirin may be involved in the anti-tumor mechanism of aspirin by inhibiting the proliferation of human B lymphocytes transformed by EB virus and inducing apoptosis.
【作者單位】: 中國醫(yī)學科學院北京協(xié)和醫(yī)學院醫(yī)學生物學研究所;
【基金】:國家自然科學基金資助項目(No81571549) 云南省應(yīng)用基礎(chǔ)研究計劃項目(No2013FZ143) 云南省重點新產(chǎn)品開發(fā)專項項目(No2016BC004) 醫(yī)學生物學研究所重點項目(No2014IMB03ZD)
【分類號】:R96
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