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KAT6A is associated with sorafenib resistance and contributes to progression of hepatocellular carcinoma by targeting YAP
Biochemical and Biophysical Research Communications ( IF 3.1 ) Pub Date : 2021-09-06 , DOI: 10.1016/j.bbrc.2021.09.009
Yan Jin 1 , Ruonan Yang 1 , Jingyi Ding 1 , Fengqi Zhu 1 , Cunle Zhu 1 , Qingguo Xu 2 , Jinzhen Cai 2
Affiliation  

Hepatocellular carcinoma (HCC) is a prevalent solid cancer worldwide and sorafenib is a common treatment. Nevertheless, sorafenib resistance is a severe clinical problem. In the present study, we identified that epigenetic regulator, KAT6A, was overexpressed in clinical HCC tissues and sorafenib-resistant HCC samples. The depletion of KAT6A repressed the cell viability and Edu-positive cell numbers of HCC cells. The IC50 value of sorafenib was increased in sorafenib-resistant HCC cells. In addition, the expression of KAT6A was induced in sorafenib-resistant HCC cells. The depletion of KAT6A suppressed the IC50 of sorafenib. Mechanically, YAP was decreased by the depletion of KAT6A. KAT6A was able to enrich in the promoter of YAP. The silencing of KAT6A reduced the enrichment of histone H3 lysine 23 acetylation (H3K23ac) and RNA polymerase II (RNA pol II) on the promoter of YAP in sorafenib-resistant HCC cells. KAT6A inhibitor WM-1119 repressed the cell proliferation of sorafenib-resistant HCC cells, while overexpression of KAT6A or YAP could reverse the effect in the cells. Meanwhile, the treatment of sorafenib inhibited the viability of sorafenib-resistant HCC cells, while the co-treatment of WM-1119 could improve the effect of sorafenib. Collectively, KAT6A was associated with sorafenib resistance and contributes to progression of HCC by targeting YAP. Targeting KAT6A may be served as a promising therapeutic approach for HCC.



中文翻译:

KAT6A 与索拉非尼耐药相关,并通过靶向 YAP 促进肝细胞癌的进展

肝细胞癌 (HCC) 是一种全球流行的实体癌,索拉非尼是一种常见的治疗方法。然而,索拉非尼耐药性是一个严重的临床问题。在本研究中,我们发现表观遗传调节因子 KAT6A 在临床 HCC 组织和索拉非尼耐药 HCC 样本中过度表达。KAT6A 的消耗抑制了 HCC 细胞的细胞活力和 Edu 阳性细胞数。在索拉非尼耐药的 HCC 细胞中,索拉非尼的 IC50 值增加。此外,在索拉非尼耐药的 HCC 细胞中诱导了 KAT6A 的表达。KAT6A 的消耗抑制了索拉非尼的 IC50。在机械上,YAP 因 KAT6A 的消耗而降低。KAT6A 能够富集 YAP 的启动子。KAT6A 的沉默减少了索拉非尼耐药 HCC 细胞中 YAP 启动子上组蛋白 H3 赖氨酸 23 乙酰化 (H3K23ac) 和 RNA 聚合酶 II (RNA pol II) 的富集。KAT6A 抑制剂 WM-1119 抑制索拉非尼耐药 HCC 细胞的细胞增殖,而 KAT6A 或 YAP 的过表达可以逆转细胞中的作用。同时,索拉非尼的治疗抑制了索拉非尼耐药的HCC细胞的活力,而WM-1119的共同治疗可以提高索拉非尼的作用。总的来说,KAT6A 与索拉非尼耐药相关,并通过靶向 YAP 促进 HCC 的进展。靶向 KAT6A 可能是一种很有前景的 HCC 治疗方法。KAT6A 抑制剂 WM-1119 抑制索拉非尼耐药 HCC 细胞的细胞增殖,而 KAT6A 或 YAP 的过表达可以逆转细胞中的作用。同时,索拉非尼的治疗抑制了索拉非尼耐药的HCC细胞的活力,而WM-1119的共同治疗可以提高索拉非尼的作用。总的来说,KAT6A 与索拉非尼耐药相关,并通过靶向 YAP 促进 HCC 的进展。靶向 KAT6A 可能是一种很有前景的 HCC 治疗方法。KAT6A 抑制剂 WM-1119 抑制索拉非尼耐药 HCC 细胞的细胞增殖,而 KAT6A 或 YAP 的过表达可以逆转细胞中的作用。同时,索拉非尼的治疗抑制了索拉非尼耐药的HCC细胞的活力,而WM-1119的共同治疗可以提高索拉非尼的作用。总的来说,KAT6A 与索拉非尼耐药相关,并通过靶向 YAP 促进 HCC 的进展。靶向 KAT6A 可能是一种很有前景的 HCC 治疗方法。KAT6A 与索拉非尼耐药相关,并通过靶向 YAP 促进 HCC 的进展。靶向 KAT6A 可能是一种很有前景的 HCC 治疗方法。KAT6A 与索拉非尼耐药相关,并通过靶向 YAP 促进 HCC 的进展。靶向 KAT6A 可能是一种很有前景的 HCC 治疗方法。

更新日期:2021-09-06
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