Abstract
The role of Hsp27 (heat shock protein 27) chaperone in regulation of THP-1 tumor cell apoptosis was studied. Realization of tumor cell apoptosis under conditions of in vitro culturing with Hsp27 specific inhibitor (KRIBB3) was evaluated by fluorescent microscopy with FITC-labeled annexin V and propidium iodide. Measurements of Bcl-2 family proteins (Bcl-2, Bax, Bad) in tumor cells incubated with Hsp27 inhibitor were carried out by Western blotting. Chaperone Hsp27 acted as apoptosis inhibitor in THP-1 tumor cells modulating the proportion of antiapoptotic (Bcl-2) and proapoptotic (Bax and Bad) proteins.
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