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HSP27 inhibitor J2 (J2) is a HSP27 inhibitor, which significantly induces abnormal HSP27 dimer formation and inhibits a production of HSP27 giant polymers, thereby having an effect of inhibiting a chaperone function of the HSP27 and reducing a cell protection function thereof. HSP27 inhibitor J2 (J2) remarkably enhances the antiproliferative activity of 17-AAG and sensitizes cisplatin-induced lung cancer cell growth inhibition[1][2].

[1]. Hwang SY, et al. Synthesis and biological effect of chrom-4-one derivatives as functional inhibitors of heat shockprotein 27. Eur J Med Chem. 2017 Oct 20;139:892-900. [2]. Younghwa Na, et al. Methods for treating pulmonary fibrosis using chromenone derivatives.