Frontiers in Oncology | |
m6A Regulator-Mediated Methylation Modification Model Predicts Prognosis, Tumor Microenvironment Characterizations and Response to Immunotherapies of Clear Cell Renal Cell Carcinoma | |
Wenhao Xu1  Jiaqi Su1  Yuanyuan Qu1  Wenkai Zhu1  Hailiang Zhang1  Dingwei Ye1  Fangning Wan1  Xi Tian1  Aihetaimujiang Anwaier1  Guohai Shi1  Gaomeng Wei2  Wangrui Liu2  | |
[1] Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China;Department of Urology, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise, China;Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China; | |
关键词: clear cell renal cell carcinoma; tumor microenvironment; N6-methyladenosine; m6A modification subclasses; immunotherapies; | |
DOI : 10.3389/fonc.2021.709579 | |
来源: DOAJ |
【 摘 要 】
BackgroundThis study aims to establish an N6-methyladenosine (m6A) RNA methylation regulators-mediated methylation model and explore its role in predicting prognostic accuracy of immune contexture and characterizations of clear cell renal cell carcinoma (ccRCC).MethodsThe m6A modification subclasses (m6AMS) were identified by unsupervised cluster analysis and three clusters were determined by consensus clustering algorithm in a discovering cohort. Testing and real-world validation cohorts were used to identify predictive responses for immune checkpoint therapies (ICTs) of m6AMS.ResultsPrognostic implications landscape of m6A regulators in cancers and its differential expression levels in ccRCC patients were identified. Based on discovering cohort, ccRCC were automatically divided into three m6AMS, and cluster 3 showed significant worse survival than cluster 1/2. Importantly, it was found that the immune checkpoint molecules expression was significantly elevated in cluster 3. Besides, m6A scoreLow group (cluster 1&2) have significantly elevated TIDE score compared with m6A scoreHigh group (cluster 3). There was conspicuous tertiary lymphoid tissue, aggressive phenotype, elevated glycolysis, expression of PD-L1, abundance of CD8+ T cells, CD4+ FOXP3+ Treg cells and TCRn immune cells infiltration in the high m6A score group. Interestingly, there are significantly increased patients with clinical benefit in m6A scoreHigh group in 368 patients receiving ICTs from testing IMvigor210 (n = 292) and validation FUSCC (n = 55) cohorts.ConclusionOur discovery highlights the relationship between tumor epigenetic heterogeneity and immune contexture. Immune-rejection cluster 3 has pro-tumorigenic immune infiltration, and shows significant clinical benefits for ccRCC patients receiving ICTs, enabling patient selection for future clinical treatment.
【 授权许可】
Unknown