Multi-omics integration of methyltransferase-like protein family reveals clinical outcomes and functional signatures in human cancer.

Multi-omics integration of methyltransferase-like protein family reveals clinical outcomes and functional signatures in human cancer.
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DOI:
10.1038/s41598-021-94019-5
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发表时间:
2021-07-20
期刊:
影响因子:
4.6
通讯作者:
Yang ZQ
Yang ZQ
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Campeanu IJ;Jiang Y;Liu L;Pilecki M;Najor A;Cobani E;Manning M;Zhang XM;Yang ZQ

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Human methyltransferase-like (METTL) proteins transfer methyl groups to nucleic acids, proteins, lipids, and other small molecules, subsequently playing important roles in various cellular processes. In this study, we performed integrated genomic, transcriptomic, proteomic, and clinicopathological analyses of 34 METTLs in a large cohort of primary tumor and cell line data. We identified a subset of METTL genes, notably METTL1, METTL7B, and NTMT1, with high frequencies of genomic amplification and/or up-regulation at both the mRNA and protein levels in a spectrum of human cancers. Higher METTL1 expression was associated with high-grade tumors and poor disease prognosis. Loss-of-function analysis in tumor cell lines indicated the biological importance of METTL1, an m7G methyltransferase, in cancer cell growth and survival. Furthermore, functional annotation and pathway analysis of METTL1-associated proteins revealed that, in addition to the METTL1 cofactor WDR4, RNA regulators and DNA packaging complexes may be functionally interconnected with METTL1 in human cancer. Finally, we generated a crystal structure model of the METTL1–WDR4 heterodimeric complex that might aid in understanding the key functional residues. Our results provide new information for further functional study of some METTL alterations in human cancer and might lead to the development of small inhibitors that target cancer-promoting METTLs.
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