Methylome-wide association analyses of lipids and modifying effects of behavioral factors in diverse race and ethnicity participants.

IF 4.8 2区 医学 Q1 GENETICS & HEREDITY
Yao Hu, Jeff Haessler, Jessica I Lundin, Burcu F Darst, Eric A Whitsel, Megan Grove, Weihua Guan, Rui Xia, Mindy Szeto, Laura M Raffield, Scott Ratliff, Yuxuan Wang, Xuzhi Wang, Alison E Fohner, Megan T Lynch, Yesha M Patel, S Lani Park, Huichun Xu, Braxton D Mitchell, Joshua C Bis, Nona Sotoodehnia, Jennifer A Brody, Bruce M Psaty, Gina M Peloso, Michael Y Tsai, Stephen S Rich, Jerome I Rotter, Jennifer A Smith, Sharon L R Kardia, Alex P Reiner, Leslie Lange, Myriam Fornage, James S Pankow, Mariaelisa Graff, Kari E North, Charles Kooperberg, Ulrike Peters
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引用次数: 0

Abstract

Circulating lipid concentrations are clinically associated with cardiometabolic diseases. The phenotypic variance explained by identified genetic variants remains limited, highlighting the importance of searching for additional factors beyond genetic sequence variants. DNA methylation has been linked to lipid concentrations in previous studies, although most of the studies harbored moderate sample sizes and exhibited underrepresentation of non-European ancestry populations. In addition, knowledge of nongenetic factors on lipid profiles is extremely limited. In the Population Architecture Using Genomics and Epidemiology (PAGE) Study, we performed methylome-wide association analysis on 9,561 participants from diverse race and ethnicity backgrounds for HDL-c, LDL-c, TC, and TG levels, and also tested interactions between smoking or alcohol intake and methylation in their association with lipid levels. We identified novel CpG sites at 16 loci (P < 1.18E-7) with successful replication on 3,215 participants. One additional novel locus was identified in the self-reported White participants (P = 4.66E-8). Although no additional CpG sites were identified in the genome-wide interaction analysis, 13 reported CpG sites showed significant heterogeneous association across smoking or alcohol intake strata. By mapping novel and reported CpG sites to genes, we identified enriched pathways directly linked to lipid metabolism as well as ones spanning various biological functions. These findings provide new insights into the regulation of lipid concentrations.

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来源期刊
自引率
5.30%
发文量
150
期刊介绍: Clinical Epigenetics, the official journal of the Clinical Epigenetics Society, is an open access, peer-reviewed journal that encompasses all aspects of epigenetic principles and mechanisms in relation to human disease, diagnosis and therapy. Clinical trials and research in disease model organisms are particularly welcome.
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