Correlation analysis of m6A-modified regulators with immune microenvironment infiltrating cells in lung adenocarcinoma

Abstract

Object Recent studies have demonstrated the epigenetic regulation of immune responses. However, the potential role of N6-methyladenosine methylation (m6A) in the tumor microenvironment (TME) remains unknown. Method In this study, the m6A modification patterns of LUAD samples were comprehensively evaluated by combining TCGA and GEO data, while these modification patterns were systematically linked to the characteristics of immune infiltrating cells in TME. The m6A score was constructed using the principal component analysis algorithm to quantify the m6A modification mode of a single tumor. Result There were three distinct patterns of m6A modification identified. The characteristics of TME cell infiltration in these three patterns were highly consistent with these three immune phenotypes of the tumors, including immune rejection, immune-inflammatory, and immune inert phenotypes. Low m6A scores were characterized by immune activation and poor survival rate. Besides, m6A scores were associated with tumor mutational load (TMB) and were able to increase the ability of TMB to predict immunotherapy. Two immunotherapy cohorts confirmed that the patients with lower m6A scores demonstrated significant therapeutic advantages and clinical benefits. m6A modifications play an important role in the development of TME diversity. Assessing the m6A modification pattern of individual tumors can deepen the understanding as to the characteristics of TME infiltration and guide more effective immunotherapy strategies.

A novel algorithm for lung adenocarcinoma based on N6 methyladenosine‐related immune long noncoding RNAs as a reliable biomarker for predicting survival outcomes and selecting sensitive anti‐tumor therapies

“…In recent years, with the development of bioinformatic analyses, research has established reliable prognostic signatures based on mRNAs or lncRNAs to predict the prognosis of patients with various malignancies. 26 , 27 We were eager to build a new algorithm to predict the survival outcomes of patients with LUAD and provide valuable recommendations for the selection of appropriate anti‐tumor drugs.…”

Analysis of m6A regulator-mediated RNA methylation modification patterns and immune infiltration characterization in schizophrenia

“…Accumulating evidence has con rmed that m 6 A methylation modi cation were closely associated with immune function [14][15][16]. Previous studies have supported that m 6 A methylation modi cation was involved in the immune microenvironment of periodontitis [17], nephritis [18], and asthma [19].…”