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. 2016 Feb 1:7:10494.
doi: 10.1038/ncomms10494.

Genome-wide meta-analysis uncovers novel loci influencing circulating leptin levels

Tuomas O Kilpeläinen  1   2   3 Jayne F Martin Carli  4 Alicja A Skowronski  5 Qi Sun  6   7 Jennifer Kriebel  8   9   10 Mary F Feitosa  11 Åsa K Hedman  12   13   14 Alexander W Drong  14 James E Hayes  15   16 Jinghua Zhao  2 Tune H Pers  1   17   18   19   20 Ursula Schick  3 Niels Grarup  1 Zoltán Kutalik  21   22 Stella Trompet  23   24 Massimo Mangino  25   26 Kati Kristiansson  27   28 Marian Beekman  29 Leo-Pekka Lyytikäinen  30   31 Joel Eriksson  32 Peter Henneman  33   34 Jari Lahti  35   36 Toshiko Tanaka  37 Jian'an Luan  2 Fabiola Del Greco M  38 Dorota Pasko  39 Frida Renström  40   41 Sara M Willems  42 Anubha Mahajan  14 Lynda M Rose  43 Xiuqing Guo  44 Yongmei Liu  45 Marcus E Kleber  46 Louis Pérusse  47   48 Tom Gaunt  49 Tarunveer S Ahluwalia  1   50   51 Yun Ju Sung  52   53 Yolande F Ramos  29 Najaf Amin  54 Antoinette Amuzu  55 Inês Barroso  56   57   58 Claire Bellis  59   60   61 John Blangero  61 Brendan M Buckley  62 Stefan Böhringer  29 Yii-Der I Chen  44 Anton J N de Craen  24 David R Crosslin  63   64 Caroline E Dale  55 Zari Dastani  65 Felix R Day  2 Joris Deelen  29 Graciela E Delgado  46 Ayse Demirkan  54   33 Francis M Finucane  2 Ian Ford  66 Melissa E Garcia  67 Christian Gieger  8   9   68 Stefan Gustafsson  12   13 Göran Hallmans  41 Susan E Hankinson  6   69   70 Aki S Havulinna  27 Christian Herder  10   71 Dena Hernandez  72 Andrew A Hicks  38 David J Hunter  73 Thomas Illig  8   74   75 Erik Ingelsson  12   13   76 Andreea Ioan-Facsinay  77 John-Olov Jansson  78 Nancy S Jenny  79 Marit E Jørgensen  51 Torben Jørgensen  80   81   82 Magnus Karlsson  83 Wolfgang Koenig  84   85   86 Peter Kraft  87 Joanneke Kwekkeboom  77 Tiina Laatikainen  27   88   89 Karl-Heinz Ladwig  9   90 Charles A LeDuc  91 Gordon Lowe  92 Yingchang Lu  3 Pedro Marques-Vidal  93 Christa Meisinger  9   10 Cristina Menni  25 Andrew P Morris  14   94 Richard H Myers  95 Satu Männistö  27 Mike A Nalls  72 Lavinia Paternoster  49 Annette Peters  9   10   86 Aruna D Pradhan  43   96 Tuomo Rankinen  97 Laura J Rasmussen-Torvik  98 Wolfgang Rathmann  99 Treva K Rice  52   53 J Brent Richards  25   100 Paul M Ridker  43   96 Naveed Sattar  101 David B Savage  58 Stefan Söderberg  102 Nicholas J Timpson  49 Liesbeth Vandenput  32 Diana van Heemst  24 Hae-Won Uh  29 Marie-Claude Vohl  48   103 Mark Walker  104 Heinz-Erich Wichmann  105   106   107 Elisabeth Widén  28 Andrew R Wood  39 Jie Yao  44 Tanja Zeller  108   109 Yiying Zhang  91 Ingrid Meulenbelt  29 Margreet Kloppenburg  77   110 Arne Astrup  111 Thorkild I A Sørensen  1   49   112 Mark A Sarzynski  97 D C Rao  11   52   53 Pekka Jousilahti  27 Erkki Vartiainen  27 Albert Hofman  42 Fernando Rivadeneira  42   113 André G Uitterlinden  42   113 Eero Kajantie  27   114   115 Clive Osmond  116 Aarno Palotie  28   56   117 Johan G Eriksson  27   36   118 Markku Heliövaara  27 Paul B Knekt  27 Seppo Koskinen  27 Antti Jula  27 Markus Perola  27   28   119 Risto K Huupponen  120   121 Jorma S Viikari  122   123 Mika Kähönen  124   125 Terho Lehtimäki  30   31 Olli T Raitakari  126   127 Dan Mellström  32 Mattias Lorentzon  32 Juan P Casas  128 Stefanie Bandinelli  129 Winfried März  46   130   131 Aaron Isaacs  54 Ko W van Dijk  33 Cornelia M van Duijn  54   132 Tamara B Harris  133 Claude Bouchard  97 Matthew A Allison  134 Daniel I Chasman  43   96 Claes Ohlsson  32 Lars Lind  135 Robert A Scott  2 Claudia Langenberg  2 Nicholas J Wareham  2 Luigi Ferrucci  37 Timothy M Frayling  39 Peter P Pramstaller  38   136   137 Ingrid B Borecki  11 Dawn M Waterworth  138 Sven Bergmann  22   139 Gérard Waeber  93 Peter Vollenweider  93 Henrik Vestergaard  1   51 Torben Hansen  1   140 Oluf Pedersen  1 Frank B Hu  73 P Eline Slagboom  29 Harald Grallert  8   9   10 Tim D Spector  25 J W Jukema  23   141   142 Robert J Klein  16 Erik E Schadt  16 Paul W Franks  7   40   143 Cecilia M Lindgren  14   144   145 Rudolph L Leibel  91 Ruth J F Loos  2   3   146
Affiliations

Genome-wide meta-analysis uncovers novel loci influencing circulating leptin levels

Tuomas O Kilpeläinen et al. Nat Commun. .

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.

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Conflict of interest statement

I.B. owns stock in GlaxoSmithKline and Incyte Corporation. F.M.F. has received honoraria, speaker fees or research funding from Astra Zeneca, Merck Sharp Dohme, Eli Lilly, Novo Nordisk and Sanofi. P.W. and G.W. received grants from GlaxoSmithKline, the Faculty of Biology and Medicine of Lausanne and the Swiss National Science Foundation (33CSCO-122661), to conduct the CoLaus study. A.A. is currently a consultant or a member of advisory board for Arena Pharmaceuticals Inc., USA; Basic Research, USA; BioCare Copenhagen, DK; Dutch Beer Knowledge Institute, NL; Gelesis, USA; Global Dairy Platform, USA; IKEA Food Scientific Health Advisory Board, SV; McCain Foods Ltd., USA; McDonald s, USA; Novo Nordisk, DK; Orexigen Therapeutics Inc., USA; S-Biotek, DK; and Weight Watchers, USA.

Figures

Figure 1
Figure 1. Meta-analysis results for the leptin-associated loci.
The bars show the additive effect of the loci in or near LEP, GCKR, CCNL1, SLC32A1, COBLL1 and FTO on BMI-unadjusted and BMI-adjusted leptin levels in the meta-analysis of Stage 1 and Stage 2 combined. The error bars indicate s.e.
Figure 2
Figure 2. Regional plots for the leptin-associated loci.
Regional plots for the loci in or near LEP (a), GCKR (b), SLC32A1 (c) and CCNL1 (d), which reached genome-wide significance in the combined meta-analysis of Stage 1 and Stage 2 for BMI-unadjusted or BMI-adjusted leptin levels. The COBLL1 locus (e) that reached P=1 × 10−6 with BMI-unadjusted and P=2 × 10−6 with BMI-adjusted leptin levels is also shown. For the locus near LEP (A), the rs10249476 SNP, located in a previously identified adipocyte-specific enhancer region, is indicated.
Figure 3
Figure 3. Expression of murine homologues of genes.
Expression of murine homologues of genes located within Lep (a,b), Slc32a1 (c,d), Gckr (e,f), Ccnl1 (g,h) and Cobll1 loci (i,j) in PGAT and SCAT from 4-month-old mice fed chow (black bars) or high-fat diet (HFD; grey bars). Quantitative PCR (qPCR) transcripts were normalized using ActB, Rplp0, Gapdh and Ppia as housekeeping genes. N=5 mice per group. T-test. *P<0.05, **P<0.01 and ***P<0.001.
Figure 4
Figure 4. Candidate gene knockdown studies in PGAT explants.
Changes in Lep mRNA expression (a) and secretion into media (b) following candidate gene knockdown in PGAT explants following stimulation with insulin and dexamethasone for 12 h. Gene expression induced by stimulation with insulin and dexamethasone (c) N=5–13 mice per group (3 replicates/condition/mouse). Secreted adiponectin was measured as a control for non-leptin secretory function (d) N=5 mice per group. Two-way repeated measures analysis of variance (ANOVA). *P<0.05, **P<0.01, ***P<0.001 and ****P<0.0001.

References

    1. Ahima R. S. et al. Role of leptin in the neuroendocrine response to fasting. Nature 382, 250–252 (1996). - PubMed
    1. Montague C. T. et al. Congenital leptin deficiency is associated with severe early-onset obesity in humans. Nature 387, 903–908 (1997). - PubMed
    1. Shah N. R. & Braverman E. R. Measuring adiposity in patients: the utility of body mass index (BMI), percent body fat, and leptin. PLoS ONE 7, e33308 (2012). - PMC - PubMed
    1. Considine R. V. et al. Serum immunoreactive-leptin concentrations in normal-weight and obese humans. N. Engl. J. Med. 334, 292–295 (1996). - PubMed
    1. Liu J. et al. Leptinemia and its association with stroke and coronary heart disease in the Jackson Heart Study. Clin. Endocrinol. (Oxf.) 72, 32–37 (2010). - PMC - PubMed

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