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第41卷第2期        郭苗苗,刘龙飞,谢梦晓,等. GCN5调控sublytic C5b⁃9诱导大鼠肾小球系膜细胞表达Cyclin D1
                  2021年2月          及致SOX9的乙酰化修饰[J]. 南京医科大学学报(自然科学版),2021,41(02):160-165                 ·165 ·


                其自身的活性,最终有利于靶基因的转录                   [5,13-15] 。本      activation mediated by GCN5 ⁃ dependent KLF5 acetyla⁃
                研究为了观察受sublytic C5b⁃9刺激的GMC中SOX9                       tion[J]. Oncogene,2018,37(35):4821-4837
                能否与GCN5结合并被GCN5乙酰化修饰,在体外进                        [6] KHURANA N,SIKKA S C. Interplay between SOX9,wnt/
                                                                       beta⁃catenin and androgen receptor signaling in castration
                行了 Co⁃IP/Western blot 实验。结果发现,用 sublytic
                                                                       ⁃resistant prostate cancer[J]. Int J Mol Sci,2019,20(9):
                C5b⁃9 刺激 GMC 后,其 SOX9 确可与 GCN5 结合,且
                                                                       2066
                其乙酰化水平明显增加。另外,在 GMC 中过表达
                                                                 [7] HUANG J Q,WEI F K,XU X L,et al.SOX9 drives the ep⁃
                GCN5 能明显提高 SOX9 的乙酰化水平,而在 GMC
                                                                       ithelial ⁃ mesenchymal transition in non ⁃ small ⁃ cell lung
                中转染酶活性缺失的ΔGCN5 质粒后,SOX9 的乙酰                            cancer through the Wnt/beta ⁃ catenin pathway[J]. J
                化水平则无明显变化。再者,沉默 GCN5 基因也可                              Transl Med,2019,17(1):143
                下调sublytic C5b⁃9诱导的SOX9乙酰化的升高。提                  [8] ALBERO R,ENJUANES A,DEMAJO S,et al. Cyclin D1
                示,sublytic C5b⁃9刺激细胞后,GCN5确能乙酰化修                       overexpression induces global transcriptional downregula⁃
                饰SOX9,且其作用依赖于GCN5的HAT活性。                               tion in lymphoid neoplasms[J]. J Clin Invest,2018,128
                    综上所述,本研究在确证了Thy⁃1N大鼠的肾组                           (9):4132-4147
                                                                 [9] YU T,WANG L,ZHAO C,et al. Sublytic C5b⁃9 induces
                织和受 sublytic C5b⁃9 刺激的 GMC 中 GCN5、SOX9、
                                                                       proliferation of glomerular mesangial cells via ERK5/
                Cyclin D1蛋白表达均已增加的基础上,进一步探讨
                                                                       MZF1/RGC⁃32 axis activated by FBXO28⁃TRAF6 com⁃
                了 GCN5 对 Cyclin D1 表达的影响,以及 GCN5 对
                                                                       plex[J]. J Cell Mol Med,2019,23(8):5654-5671
                SOX9的乙酰化修饰作用。研究揭示,GCN5既能促                        [10] 罗   灿,王文博,吴志皎,等. 用sublytic C5b⁃9刺激上调
                进 Cyclin D1 基因的表达,又能乙酰化修饰 SOX9。                        的 KLF5 对大鼠肾小球系膜细胞合成 IL⁃36α的影响
                本研究结果为今后深入研究 Thy⁃1N 的发病机制提                            [J]. 南京医科大学学报(自然科学版),2020,40(3):
                供了有用的实验依据。                                             367-373
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                                                                                            [收稿日期] 2020-10-19
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