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National Institute of Environmental Health Sciences

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Publication Detail

Title: Integrated Genomic and Proteomic Analyses Reveal Novel Mechanisms of the Methyltransferase SETD2 in Renal Cell Carcinoma Development.

Authors: Li, Lin; Miao, Weili; Huang, Ming; Williams, Preston; Wang, Yinsheng

Published In Mol Cell Proteomics, (2019 Mar)

Abstract: Clear cell renal cell carcinoma (ccRCC) is the most common type of RCC in humans. SET domain-containing 2 (SETD2), a lysine methyltransferase for histone and other proteins, has been found to be frequently lost in ccRCC. However, the mechanisms through which deficiency in SETD2 contributes to ccRCC development remain largely unknown. Here, we used a human embryonic kidney epithelial cell line with the SETD2 gene being knocked out using CRISPR/Cas9 technology. Using ChIP-seq analysis, we showed that SETD2 loss leads to diminished occupancy of histone H3K36me3 and H4K16ac on actively transcribed genes. Transcriptome sequencing of the knockout cells revealed diminished expression of genes involved in metabolic pathways and elevated expression of genes involved in regulation of RNA polymerase II-mediated transcription. Quantitative proteomic analysis of chromatin-associated proteins showed that genetic ablation of SETD2 leads to elevated chromatin occupancy of proteins involved in chromatin remodeling and RNA polymerase II transcription regulation, and diminished chromatin binding of proteins involved in translation elongation and RNA splicing. Interestingly, we found that SETD2 depletion attenuates cell proliferation, and this can be rescued by knockdown of CDK1. Taken together, we illustrate multiple SETD2-regulated cellular pathways that suppress cancer development and uncover mechanisms underlying aberrant cell cycle regulation in SETD2-depleted cells.

PubMed ID: 30487242 Exiting the NIEHS site

MeSH Terms: Carcinoma, Renal Cell/enzymology*; Carcinoma, Renal Cell/genetics; Cell Cycle; Cell Line, Tumor; Cell Proliferation; Chromatin Immunoprecipitation; Clustered Regularly Interspaced Short Palindromic Repeats; Gene Expression Profiling/methods*; Gene Knockout Techniques; HEK293 Cells; Histone-Lysine N-Methyltransferase/genetics*; Histones/metabolism; Humans; Kidney Neoplasms/enzymology*; Kidney Neoplasms/genetics; Metabolic Networks and Pathways; Mutation; Proteomics/methods*; RNA Polymerase II/metabolism; Sequence Analysis, RNA; Survival Analysis; Transcription, Genetic

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