Pan-Cancer Landscape of Aberrant DNA Methylation across Human Tumors

被引：255

作者：

Saghafinia, Sadegh ^{[1
,3
,4
]}

Mina, Marco ^{[1
,3
]}

Riggi, Nicolo ^{[2
]}

Hanahan, Douglas ^{[4
]}

Ciriello, Giovanni ^{[1
,3
]}

机构：

[1] Univ Lausanne UNIL, Dept Computat Biol, Lausanne, Switzerland

[2] Univ Lausanne UNIL, Dept Expt Pathol, Lausanne, Switzerland

[3] Univ Lausanne UNIL, SIB, Lausanne, Switzerland

[4] Ecole Polytech Fed Lausanne, Sch Life Sci, Swiss Inst Expt Canc Res ISREC, Lausanne, Switzerland

来源：

CELL REPORTS | 2018年 / 25卷 / 04期

基金：

瑞士国家科学基金会;

关键词：

COMPREHENSIVE MOLECULAR CHARACTERIZATION; NF-KAPPA-B; HEPATOCELLULAR-CARCINOMA; GENOMIC CHARACTERIZATION; PROMOTER METHYLATION; METASTATIC MELANOMA; SIGNALING PATHWAYS; WILMS-TUMOR; GENE; EXPRESSION;

D O I：

10.1016/j.celrep.2018.09.082

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

The discovery of cancer-associated alterations has primarily focused on genetic variants. Nonetheless, altered epigenomes contribute to deregulate transcription and promote oncogenic pathways. Here, we designed an algorithmic approach (RESET) to identify aberrant DNA methylation and associated cis-transcriptional changes across >6,000 human tumors. Tumors exhibiting mutations of chromatin remodeling factors and Wnt signaling displayed DNA methylation instability, characterized by numerous hyper- and hypo-methylated loci. Most silenced and enhanced genes coalesced in specific pathways including apoptosis, DNA repair, and cell metabolism. Cancer-germ line antigens (CG) were frequently epigenomically enhanced and their expression correlated with response to anti-PD-1, but not anti-CTLA4, in skin melanoma. Finally, we demonstrated the potential of our approach to explore DNA methylation changes in pediatric tumors, which frequently lack genetic drivers and exhibit epigenomic modifications. Our results provide a pan-cancer map of aberrant DNA methylation to inform functional and therapeutic studies.

引用

页码：1066 / +

页数：23

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