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Epigenetics meets proteomics in an epigenome-wide association study with circulating blood plasma protein traits

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posted on 2022-11-22, 21:16 authored by Shaza B. Zaghlool, Brigitte Kühnel, Mohamed A. Elhadad, Sara Kader, Anna Halama, Gaurav Thareja, Rudolf Engelke, Hina Sarwath, Eman K. Al-Dous, Yasmin A. Mohamoud, Thomas Meitinger, Rory Wilson, Konstantin Strauch, Annette Peters, Dennis O. Mook-Kanamori, Johannes Graumann, Joel A. Malek, Christian Gieger, Melanie Waldenberger, Karsten Suhre

DNA methylation and blood circulating proteins have been associated with many complex disorders, but the underlying disease-causing mechanisms often remain unclear. Here, we report an epigenome-wide association study of 1123 proteins from 944 participants of the KORA population study and replication in a multi-ethnic cohort of 344 individuals. We identify 98 CpG-protein associations (pQTMs) at a stringent Bonferroni level of significance. Overlapping associations with transcriptomics, metabolomics, and clinical endpoints suggest implication of processes related to chronic low-grade inflammation, including a network involving methylation of NLRC5, a regulator of the inflammasome, and associated pQTMs implicating key proteins of the immune system, such as CD48, CD163, CXCL10, CXCL11, LAG3, FCGR3B, and B2M. Our study links DNA methylation to disease endpoints via intermediate proteomics phenotypes and identifies correlative networks that may eventually be targeted in a personalized approach of chronic low-grade inflammation.

Other Information

Published in: Nature Communications
License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1038/s41467-019-13831-w

History

Language

  • English

Publisher

Springer Science and Business Media LLC

Publication Year

  • 2020

Institution affiliated with

  • Weill Cornell Medical College in Qatar

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