Identification and Verification of m7G Modification Patterns and Characterization of Tumor Microenvironment Infiltration via Multi-Omics Analysis in Clear Cell Renal Cell Carcinoma

• Published in: Frontiers in immunology 2022-05, Vol.13, p.874792-874792
• Main Authors: Dong, Kai, Gu, Di, Shi, Jiazi, Bao, Yewei, Fu, Zhibin, Fang, Yu, Qu, Le, Zhu, Wentong, Jiang, Aimin, Wang, Linhui
• Format: Article
• Language: English
• Subjects: drug response; immune microenvironment; Immunology; N7-methylguanosine; prognosis; renal cell carcinoma; single cell
• ISSN: 1664-3224; 1664-3224
• DOI: 10.3389/fimmu.2022.874792

The epigenetic modification of tumorigenesis and progression in neoplasm has been demonstrated in recent studies. Nevertheless, the underlying association of N7-methylguanosine (m 7 G) regulation with molecular heterogeneity and tumor microenvironment (TME) in clear cell renal cell carcinoma (ccRCC) remains unknown. We explored the expression profiles and genetic variation features of m 7 G regulators and identified their correlations with patient outcomes in pan-cancer. Three distinct m 7 G modification patterns, including MGCS1, MGCS2, and MGCS3, were further determined and systematically characterized via multi-omics data in ccRCC. Compared with the other two subtypes, patients in MGCS3 exhibited a lower clinical stage/grade and better prognosis. MGCS1 showed the lowest enrichment of metabolic activities. MGCS2 was characterized by the suppression of immunity. We then established and validated a scoring tool named m7Sig, which could predict the prognosis of ccRCC patients. This study revealed that m 7 G modification played a vital role in the formation of the tumor microenvironment in ccRCC. Evaluating the m 7 G modification landscape helps us to raise awareness and strengthen the understanding of ccRCC’s characterization and, furthermore, to guide future clinical decision making.