Genetic variants in microRNA genes and targets associated with cardiovascular disease risk factors in the African-American population.

TitleGenetic variants in microRNA genes and targets associated with cardiovascular disease risk factors in the African-American population.
Publication TypeJournal Article
Year of Publication2017
AuthorsLi, C, Grove, ML, Yu, B, Jones, BC, Morrison, A, Boerwinkle, E, Liu, X
JournalHum Genet
Date Published2017 Dec 20
ISSN1432-1203
Abstract

The purpose of this study is to identify microRNA (miRNA) related polymorphism, including single nucleotide variants (SNVs) in mature miRNA-encoding sequences or in miRNA-target sites, and their association with cardiovascular disease (CVD) risk factors in African-American population. To achieve our objective, we examined 1900 African-Americans from the Atherosclerosis Risk in Communities study using SNVs identified from whole-genome sequencing data. A total of 971 SNVs found in 726 different mature miRNA-encoding sequences and 16,057 SNVs found in the three prime untranslated region (3'UTR) of 3647 protein-coding genes were identified and interrogated their associations with 17 CVD risk factors. Using single-variant-based approach, we found 5 SNVs in miRNA-encoding sequences to be associated with serum Lipoprotein(a) [Lp(a)], high-density lipoprotein (HDL) or triglycerides, and 2 SNVs in miRNA-target sites to be associated with Lp(a) and HDL, all with false discovery rates of 5%. Using a gene-based approach, we identified 3 pairs of associations between gene NSD1 and platelet count, gene HSPA4L and cardiac troponin T, and gene AHSA2 and magnesium. We successfully validated the association between a variant specific to African-American population, NR_039880.1:n.18A>C, in mature hsa-miR-4727-5p encoding sequence and serum HDL level in an independent sample of 2135 African-Americans. Our study provided candidate miRNAs and their targets for further investigation of their potential contribution to ethnic disparities in CVD risk factors.

DOI10.1007/s00439-017-1858-8
Alternate JournalHum. Genet.
PubMed ID29264654
Grant List5RC2HL102419 / / National Heart, Lung, and Blood Institute / United States
U54HG003273 / / National Human Genome Research Institute / United States
UM1HG008898 / / National Human Genome Research Institute / United States