ArticleNan fang yi ke da xue xue bao = Journal of Southern Medical University2022
[Expression pattern of the histone lysine demethylase family and its potential role in bladder cancer: a multi-omics analysis].
Article in Nan fang yi ke da xue xue bao = Journal of Southern Medical University, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveTo investigate the expression patterns of 19 histone lysine demethylases (KDMs) and their role in bladder cancer.
methodsIn this study, UALCAN and GSCALite were used to analyze the transcriptional expression, methylation level and somatic variation of KDMs in bladder cancer samples from TCGA. Kaplan Meier-Plotter and Assistant for clinical bioinformatics were used to investigate the effect of KDMs expression on the prognosis of BLCA samples. The immune infiltration and drug sensitivity of KDMs in bladder cancer were analyzed by Timer and GSCALite.
resultsThe KDMs did not show consistent expressions patterns in bladder cancer, where the expressions of KDM1A/1B/2B/4A/4B/5B/5C were significantly upregulated while those of KDM3B/6B/7C were significantly downregulated. Methylation data analysis showed that methylation levels of KDM1A/3B/4A/4B/4C/5A/5B/5C/7B were significantly downregulated and that of KDM7C was upregulated. The transcription levels of 14 KDMs had significant negative correlations with their methylation levels, and among them KDM1A showed the strongest correlation. Mutation analysis revealed that KDM6A had the highest frequency of nonsynonymous mutations with the largest variety, and these mutations were complementary to nonsynonymous mutations of the other KDMs. Survival analysis showed that KDM3A/4C/5D/6A/7B were protective for OS while KDM3B/5B/5C adversely affected RFS of BLCA patients. Further comprehensive prognostic modeling confirmed that KDM4C/6A/7B were potential prognostic biomarkers of bladder cancer, and their expressions were positively correlated with immune infiltration in BLCA patients. KDM2B/3B/4B/4C/5A were negatively correlated with the sensitivity to most anticancer drugs, while KDM2B/4B were positively correlated with the sensitivity to 4 anticancer drugs.
conclusionThe expression patterns of the KDMs in bladder cancer highlight a high mutation complementarity and a negative correlation between over-expression and hypomethylation level closely related with the prognosis, immune infiltration and drug sensitivity.
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