Projects per year
Abstract
Leptin is an adipocyte-secreted hormone, the circulating levels of which correlate closely with overall adiposity. Although rare mutations in the leptin (LEP) gene are well known to cause leptin deficiency and severe obesity, no common loci regulating circulating leptin levels have been uncovered. Therefore, we performed a genome-wide association study (GWAS) of circulating leptin levels from 32,161 individuals and followed up loci reaching P<10(-6) in 19,979 additional individuals. We identify five loci robustly associated (P<5 × 10(-8)) with leptin levels in/near LEP, SLC32A1, GCKR, CCNL1 and FTO. Although the association of the FTO obesity locus with leptin levels is abolished by adjustment for BMI, associations of the four other loci are independent of adiposity. The GCKR locus was found associated with multiple metabolic traits in previous GWAS and the CCNL1 locus with birth weight. Knockdown experiments in mouse adipose tissue explants show convincing evidence for adipogenin, a regulator of adipocyte differentiation, as the novel causal gene in the SLC32A1 locus influencing leptin levels. Our findings provide novel insights into the regulation of leptin production by adipose tissue and open new avenues for examining the influence of variation in leptin levels on adiposity and metabolic health.
Original language | English |
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Article number | 10494 |
Journal | Nature Communications |
Volume | 7 |
DOIs | |
Publication status | Published - 1 Feb 2016 |
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Dive into the research topics of 'Genome-wide meta-analysis uncovers novel loci influencing circulating leptin levels'. Together they form a unique fingerprint.Projects
- 4 Finished
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MRC UoB UNITE Unit - programme 3
Timpson, N. J. (Principal Investigator) & Timpson, N. J. (Principal Investigator)
1/06/13 → 31/03/18
Project: Research
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IEU Theme 2
Flach, P. A. (Principal Investigator), Gaunt, T. R. (Principal Investigator) & Gaunt, T. R. (Principal Investigator)
1/06/13 → 31/03/18
Project: Research
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MRC Population Health Scientist Fellowship
Paternoster, L. (Principal Investigator)
1/10/12 → 1/10/16
Project: Research
Profiles
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Professor Tom R Gaunt
- Bristol Medical School (PHS) - Professor of Health and Biomedical Informatics and MRC Investigator
- Bristol Population Health Science Institute
- MRC Integrative Epidemiology Unit - Programme lead
Person: Academic , Member
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Dr Lavinia Paternoster
- Bristol Medical School (PHS) - Associate Professor in Genetic Epidemiology
- Bristol Population Health Science Institute
- MRC Integrative Epidemiology Unit
Person: Academic , Member
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Professor Nicholas John Timpson
- Bristol Medical School (PHS) - Professor of Genetic Epidemiology
- Bristol Population Health Science Institute
- MRC Integrative Epidemiology Unit
- Cancer
Person: Academic , Member