Department of Urology, Ruijin Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, China.
Department of Urology, Ruijin Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, China.
Biochem Biophys Res Commun. 2023 Sep 3;671:255-262. doi: 10.1016/j.bbrc.2023.06.014. Epub 2023 Jun 6.
Transcription deregulation is recognized as a prominent hallmark of carcinogenesis. However, our understanding of the transcription factors implicated in the dysregulated transcription network of clear cell renal carcinoma (ccRCC) remains incomplete. In this study, we present evidence that ZNF692 drives tumorigenesis in ccRCC through the transcriptional repression of essential genes. We observed overexpression of ZNF692 in various cancers, including ccRCC, and found that the knockdown or knockout of ZNF692 suppressed the growth of ccRCC. Genome-wide binding site analysis using ChIP-seq revealed that ZNF692 regulates genes associated with cell growth, Wnt signaling, and immune response in ccRCC. Furthermore, motif enrichment analysis identified a specific motif (5'-GCRAGKGGAKAY-3') that is recognized and bound by ZNF692. Subsequent luciferase reporter assays demonstrated that ZNF692 transcriptionally represses the expression of IRF4 and FLT4 in a ZNF692 binding motif-dependent manner. Additionally, we observed MYC binding to the promoter regions of ZNF692 in most cancer types, driving ZNF692 overexpression specifically in ccRCC. Overall, our study sheds light on the functional significance of ZNF692 in ccRCC and provides valuable insights into its therapeutic potential as a target in cancer treatment.
转录失调被认为是致癌作用的一个显著标志。然而,我们对于参与透明细胞肾细胞癌(ccRCC)中失调转录网络的转录因子的理解仍然不完整。在这项研究中,我们提供证据表明,ZNF692 通过对必需基因的转录抑制来驱动 ccRCC 发生肿瘤。我们观察到 ZNF692 在包括 ccRCC 在内的各种癌症中过表达,并发现 ZNF692 的敲低或敲除抑制了 ccRCC 的生长。使用 ChIP-seq 的全基因组结合位点分析表明,ZNF692 调节与 ccRCC 中细胞生长、Wnt 信号和免疫反应相关的基因。此外,基序富集分析鉴定出由 ZNF692 识别和结合的特定基序(5'-GCRAGKGGAKAY-3')。随后的荧光素酶报告基因检测表明,ZNF692 在依赖于 ZNF692 结合基序的方式下转录抑制 IRF4 和 FLT4 的表达。此外,我们观察到 MYC 在大多数癌症类型中与 ZNF692 的启动子区域结合,特异性地驱动 ccRCC 中 ZNF692 的过表达。总的来说,我们的研究揭示了 ZNF692 在 ccRCC 中的功能意义,并为其作为癌症治疗靶点的治疗潜力提供了有价值的见解。