| Title: | Two novel pleiotropic loci associated with osteoporosis and abdominal obesity |
| Journal: | Human Genetics |
| Published: | 1 Apr 2020 |
| Pubmed: | https://pubmed.ncbi.nlm.nih.gov/32239398/ |
| DOI: | https://doi.org/10.1007/s00439-020-02155-1 |
| URL: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7883472 |
Publication 5927
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Abstract
Aiming to uncover a shared genetic basis of abdominal obesity and osteoporosis, we performed a bivariate GWAS meta-analysis of femoral neck BMD (FNK-BMD) and trunk fat mass adjusted by trunk lean mass (TFMadj) in 11,496 subjects from 6 samples, followed by in silico replication in the large-scale UK Biobank (UKB) cohort. A series of functional investigations were conducted on the identified variants. Bivariate GWAS meta-analysis identified two novel pleiotropic loci 12q15 (lead SNP rs73134637, p = 3.45 × 10-7) and 10p14 (lead SNP rs2892347, p = 2.63 × 10-7) that were suggestively associated and that were replicated in the analyses of related traits in the UKB sample (osteoporosis p = 0.06 and 0.02, BMI p = 0.03 and 4.61 × 10-3, N up to 499,520). Cis-eQTL analysis demonstrated that allele C at rs73134637 was positively associated with IFNG expression in whole blood (N = 369, p = 0.04), and allele A at rs11254759 (10p14, p = 9.49 × 10-7) was negatively associated with PRKCQ expression in visceral adipose tissue (N = 313, p = 0.04) and in lymphocytes (N = 117, p = 0.03). As a proof-of-principle experiment, the function of rs11254759, which is 235 kb 5′-upstream from PRKCQ gene, was investigated by the dual-luciferase reporter assay, which clearly showed that the haplotype carrying rs11254759 regulated PRKCQ expression by upregulating PRKCQ promoter activity (p = 4.60 × 10-7) in an allelic specific manner. Mouse model analysis showed that heterozygous PRKCQ deficient mice presented decreased fat mass compared to wild-type control mice (p = 3.30 × 10-3). Mendelian randomization analysis demonstrated that both FNK-BMD and TFMadj were causally associated with fracture risk (p = 1.26 × 10-23 and 1.18 × 10-11). Our findings may provide useful insights into the genetic association between osteoporosis and abdominal obesity.</p>
14 Authors
- Lu Liu
- Xiao-Lin Yang
- Hong Zhang
- Zi-Jia Zhang
- Xin-Tong Wei
- Gui-Juan Feng
- Ju Liu
- Hui-Ping Peng
- Rong Hai
- Hui Shen
- Qing Tian
- Hong-Wen Deng
- Yu-Fang Pei
- Lei Zhang
Enabling scientific discoveries that improve human health