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Hua J, Zhong C, Chen W, Fu J, Wang J, Wang Q, Zhu G, Li Y, Tao Y, Zhang M, Dong Y, Lu S, Liu W, Qiang J. Single nucleotide polymorphism SNP19140160 A > C is a potential breeding locus for fast-growth largemouth bass (Micropterus salmoides). BMC Genomics 2024; 25:64. [PMID: 38229016 DOI: 10.1186/s12864-024-09962-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 01/02/2024] [Indexed: 01/18/2024] Open
Abstract
BACKGROUND Largemouth bass (Micropterus salmoides) has significant economic value as a high-yielding fish species in China's freshwater aquaculture industry. Determining the major genes related to growth traits and identifying molecular markers associated with these traits serve as the foundation for breeding strategies involving gene pyramiding. In this study, we screened restriction-site associated DNA sequencing (RAD-seq) data to identify single nucleotide polymorphism (SNP) loci potentially associated with extreme growth differences between fast-growth and slow-growth groups in the F1 generation of a largemouth bass population. RESULTS We subsequently identified associations between these loci and specific candidate genes related to four key growth traits (body weight, body length, body height, and body thickness) based on SNP genotyping. In total, 4,196,486 high-quality SNPs were distributed across 23 chromosomes. Using a population-specific genotype frequency threshold of 0.7, we identified 30 potential SNPs associated with growth traits. Among the 30 SNPs, SNP19140160, SNP9639603, SNP9639605, and SNP23355498 showed significant associations; three of them (SNP9639603, SNP9639605, and SNP23355498) were significantly associated with one trait, body length, in the F1 generation, and one (SNP19140160) was significantly linked with four traits (body weight, height, length, and thickness) in the F1 generation. The markers SNP19140160 and SNP23355498 were located near two growth candidate genes, fam174b and ppip5k1b, respectively, and these candidate genes were closely linked with growth, development, and feeding. The average body weight of the group with four dominant genotypes at these SNP loci in the F1 generation population (703.86 g) was 19.63% higher than that of the group without dominant genotypes at these loci (588.36 g). CONCLUSIONS Thus, these four markers could be used to construct a population with dominant genotypes at loci related to fast growth. These findings demonstrate how markers can be used to identify genes related to fast growth, and will be useful for molecular marker-assisted selection in the breeding of high-quality largemouth bass.
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Grants
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- No. JBGS [2021] 130 Project of Seed Industry Revitalization in Jiangsu Province, China
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- 2022-ZYXT-07 Major Technology Collaborative Promotion Plan for Largemouth bass Industry in Jiangsu Province
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- NO. 2023JBFR02 the central public-interest scientific institution basal research fund, freshwater fisheries research center, CAFS
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
- No. SNG2021009 the Suzhou Science and Technology Program
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Affiliation(s)
- Jixiang Hua
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Chunyi Zhong
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Wenhua Chen
- Suzhou Aquatic Technology Extension Station, Suzhou, 215004, China
| | - Jianjun Fu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Jian Wang
- Guangxi Xinjian Investment Group Limited Company, Hechi, 530201, China
| | - Qingchun Wang
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China
| | - Geyan Zhu
- Suzhou Aquatic Technology Extension Station, Suzhou, 215004, China
| | - Yan Li
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Yifan Tao
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Maoyou Zhang
- Suzhou Aquatic Technology Extension Station, Suzhou, 215004, China
| | - Yalun Dong
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Siqi Lu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Wenting Liu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Jun Qiang
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China.
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China.
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Warden CH, Bettaieb A, Min E, Fisler JS, Haj FG, Stern JS. Chow fed UC Davis strain female Lepr fatty Zucker rats exhibit mild glucose intolerance, hypertriglyceridemia, and increased urine volume, all reduced by a Brown Norway strain chromosome 1 congenic donor region. PLoS One 2017; 12:e0188175. [PMID: 29211750 PMCID: PMC5718614 DOI: 10.1371/journal.pone.0188175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 10/23/2017] [Indexed: 12/01/2022] Open
Abstract
Our objective is to identify genes that influence the development of any phenotypes of type 2 diabetes (T2D) or kidney disease in obese animals. We use the reproductively isolated UC Davis fatty Zucker strain rat model in which the defective chromosome 4 leptin receptor (LeprfaSte/faSte) results in fatty obesity. We previously produced a congenic strain with the distal half of chromosome 1 from the Brown Norway strain (BN) on a Zucker (ZUC) background (BN.ZUC-D1Rat183–D1Rat90). Previously published studies in males showed that the BN congenic donor region protects from some phenotypes of renal dysfunction and T2D. We now expand our studies to include females and expand phenotyping to gene expression. We performed diabetes and kidney disease phenotyping in chow-fed females of the BN.ZUC-D1Rat183-D1Rat90 congenic strain to determine the specific characteristics of the UC Davis model. Fatty LeprfaSte/faSte animals of both BN and ZUC genotype in the congenic donor region had prediabetic levels of fasting blood glucose and blood glucose 2 hours after a glucose tolerance test. We observed significant congenic strain chromosome 1 genotype effects of the BN donor region in fatty females that resulted in decreased food intake, urine volume, glucose area under the curve during glucose tolerance test, plasma triglyceride levels, and urine glucose excretion per day. In fatty females, there were significant congenic strain BN genotype effects on non-fasted plasma urea nitrogen, triglyceride, and creatinine. Congenic region genotype effects were observed by quantitative PCR of mRNA from the kidney for six genes, all located in the chromosome 1 BN donor region, with potential effects on T2D or kidney function. The results are consistent with the hypothesis that the BN genotype chromosome 1 congenic region influences traits of both type 2 diabetes and kidney function in fatty UC Davis ZUC females and that there are many positional candidate genes.
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Affiliation(s)
- Craig H. Warden
- Departments of Pediatrics, Neurobiology Physiology and Behavior, University of California, Davis, Davis, CA, United States of America
- * E-mail:
| | - Ahmed Bettaieb
- Department of Nutrition, University of Tennessee, Knoxville, TN, United States of America
| | - Esther Min
- Department of Nutrition, University of California, Davis, Davis, CA, United States of America
| | - Janis S. Fisler
- Department of Nutrition, University of California, Davis, Davis, CA, United States of America
| | - Fawaz G. Haj
- Department of Nutrition, University of California, Davis, Davis, CA, United States of America
| | - Judith S. Stern
- Department of Nutrition, University of California, Davis, Davis, CA, United States of America
- Internal Medicine, University of California, Davis, Davis, CA, United States of America
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3
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Mills AA. The Chromodomain Helicase DNA-Binding Chromatin Remodelers: Family Traits that Protect from and Promote Cancer. Cold Spring Harb Perspect Med 2017; 7:cshperspect.a026450. [PMID: 28096241 DOI: 10.1101/cshperspect.a026450] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A plethora of mutations in chromatin regulators in diverse human cancers is emerging, attesting to the pivotal role of chromatin dynamics in tumorigenesis. A recurrent theme is inactivation of the chromodomain helicase DNA-binding (CHD) family of proteins-ATP-dependent chromatin remodelers that govern the cellular machinery's access to DNA, thereby controlling fundamental processes, including transcription, proliferation, and DNA damage repair. This review highlights what is currently known about how genetic and epigenetic perturbation of CHD proteins and the pathways that they regulate set the stage for cancer, providing new insight for designing more effective anti-cancer therapies.
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Affiliation(s)
- Alea A Mills
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, 11724
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4
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Fam BC, Sgambellone R, Ruan Z, Proietto J, Andrikopoulos S. Contribution of the hypothalamus and gut to weight gain susceptibility and resistance in mice. J Endocrinol 2015; 225:191-204. [PMID: 25934705 DOI: 10.1530/joe-15-0131] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/30/2015] [Indexed: 12/15/2022]
Abstract
Obesity susceptibility in humans and in rodent strains varies in response to the consumption of high-energy density (HED) diets. However, the exact mechanism(s) involved in this susceptibility remain(s) unresolved. The aim of the present study was to gain greater insight into this susceptibility by using C57BL/6J (B6) mice that were separated into obesity-prone (diet-induced obese (DIO)) and obesity-resistant (diet-induced resistant (DR)) groups following an HED diet for 6 weeks. Physiological, biochemical and gene expression assessments of energy balance were performed in the DIO and DR mice on an HED diet and chow-fed mice. The increased weight gain of the DIO mice as compared to the DR mice was associated with increased energy intake and higher plasma leptin and adiponectin levels but not with reduced physical activity or resting energy expenditure. Hypothalamic Pomc gene expression was elevated, but there were no changes in Npy or Agrp expression. Adipose tissue leptin and adiponectin gene expression were significantly reduced in the DIO group as compared to the DR group. Interestingly, ileum expression of G protein-coupled receptor (Gpr) 40 (Gpr40) was significantly increased, whereas Gpr120, Gpr119, Gpr41, and glucagon-like peptide 1 (Glp1) were reduced. Contrastingly, the lower weight gain of the DR group was associated with elevated adipose tissue leptin and adiponectin gene expression, but there were no differences in plasma hormone or hypothalamic gene expression levels as compared to chow-fed mice. Therefore, the present data demonstrate that susceptibility and resistance to diet-induced weight gain in B6 mice appears to be predominantly driven by peripheral rather than hypothalamic modifications, and changes in gut-specific receptors are a potentially important contributor to this variation.
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Affiliation(s)
- Barbara C Fam
- Department of Medicine (Austin Health) Austin Hospital, The University of Melbourne, Level 7, Lance Townsend Building, Studley Road, Heidelberg, Victoria 3084, Australia
| | - Rebecca Sgambellone
- Department of Medicine (Austin Health) Austin Hospital, The University of Melbourne, Level 7, Lance Townsend Building, Studley Road, Heidelberg, Victoria 3084, Australia
| | - Zheng Ruan
- Department of Medicine (Austin Health) Austin Hospital, The University of Melbourne, Level 7, Lance Townsend Building, Studley Road, Heidelberg, Victoria 3084, Australia
| | - Joseph Proietto
- Department of Medicine (Austin Health) Austin Hospital, The University of Melbourne, Level 7, Lance Townsend Building, Studley Road, Heidelberg, Victoria 3084, Australia
| | - Sofianos Andrikopoulos
- Department of Medicine (Austin Health) Austin Hospital, The University of Melbourne, Level 7, Lance Townsend Building, Studley Road, Heidelberg, Victoria 3084, Australia
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5
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15q26.1 microdeletion encompassing only CHD2 and RGMA in two adults with moderate intellectual disability, epilepsy and truncal obesity. Eur J Med Genet 2014; 57:520-3. [PMID: 24932903 DOI: 10.1016/j.ejmg.2014.06.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 06/02/2014] [Indexed: 01/28/2023]
Abstract
We report two patients with microdeletions in chromosomal subdomain 15q26.1 encompassing only two genes, CHD2 and RGMA. Both patients present a distinct phenotype with intellectual disability, epilepsy, behavioral issues, truncal obesity, scoliosis and facial dysmorphism. CHD2 haploinsufficiency is known to cause intellectual disability and epilepsy, RGMA haploinsufficiency might explain truncal obesity with onset around puberty observed in our two patients.
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6
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Lossie AC, Muir WM, Lo CL, Timm F, Liu Y, Gray W, Zhou FC. Implications of genomic signatures in the differential vulnerability to fetal alcohol exposure in C57BL/6 and DBA/2 mice. Front Genet 2014; 5:173. [PMID: 24966868 PMCID: PMC4052096 DOI: 10.3389/fgene.2014.00173] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 05/22/2014] [Indexed: 12/12/2022] Open
Abstract
Maternal alcohol consumption inflicts a multitude of phenotypic consequences that range from undetectable changes to severe dysmorphology. Using tightly controlled murine studies that deliver precise amounts of alcohol at discrete developmental stages, our group and other labs demonstrated in prior studies that the C57BL/6 and DBA/2 inbred mouse strains display differential susceptibility to the teratogenic effects of alcohol. Since the phenotypic diversity extends beyond the amount, dosage and timing of alcohol exposure, it is likely that an individual's genetic background contributes to the phenotypic spectrum. To identify the genomic signatures associated with these observed differences in alcohol-induced dysmorphology, we conducted a microarray-based transcriptome study that also interrogated the genomic signatures between these two lines based on genetic background and alcohol exposure. This approach is called a gene x environment (GxE) analysis; one example of a GxE interaction would be a gene whose expression level increases in C57BL/6, but decreases in DBA/2 embryos, following alcohol exposure. We identified 35 candidate genes exhibiting GxE interactions. To identify cis-acting factors that mediated these interactions, we interrogated the proximal promoters of these 35 candidates and found 241 single nucleotide variants (SNVs) in 16 promoters. Further investigation indicated that 186 SNVs (15 promoters) are predicted to alter transcription factor binding. In addition, 62 SNVs created, removed or altered the placement of a CpG dinucleotide in 13 of the proximal promoters, 53 of which overlapped putative transcription factor binding sites. These 53 SNVs are also our top candidates for future studies aimed at examining the effects of alcohol on epigenetic gene regulation.
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Affiliation(s)
- Amy C Lossie
- Department of Animal Sciences, Purdue University West Lafayette, IN, USA
| | - William M Muir
- Department of Animal Sciences, Purdue University West Lafayette, IN, USA ; Department of Medicine, Indiana University School of Medicine Indianapolis, IN, USA
| | - Chiao-Ling Lo
- Department of Anatomy and Cell Biology, Indiana University School of Medicine Indianapolis, IN, USA
| | - Floyd Timm
- Department of Anatomy and Cell Biology, Indiana University School of Medicine Indianapolis, IN, USA
| | - Yunlong Liu
- Department of Molecular and Medical Genetics, Indiana University School of Medicine Indianapolis, IN, USA
| | - Whitney Gray
- Department of Anatomy and Cell Biology, Indiana University School of Medicine Indianapolis, IN, USA
| | - Feng C Zhou
- Department of Anatomy and Cell Biology, Indiana University School of Medicine Indianapolis, IN, USA ; Stark Neuroscience Research Institute, Indiana University School of Medicine Indianapolis, IN, USA
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7
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Tepaamorndech S, Kirschke CP, Huang L. Linking cellular zinc status to body weight and fat mass: mapping quantitative trait loci in Znt7 knockout mice. Mamm Genome 2014; 25:335-53. [PMID: 24770585 DOI: 10.1007/s00335-014-9512-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 04/01/2014] [Indexed: 11/29/2022]
Abstract
Zinc transporter 7 (Znt7, Slc30a7) knockout (KO) mice display abnormalities in body weight gain and body adiposity. Regulation of body weight and body fat accumulation is complex, involving multiple genetic and environmental factors. To understand how zinc homeostasis influences body weight and fat deposit and to identify quantitative trait loci (QTLs) that link zinc metabolism to growth and adiposity, we conducted a genome-wide mapping study using male F2 Znt7 KO mice and wild-type (WT) littermates with a mixed 129P1/ReJ and C57BL/6J genetic background. The mice were fed a semi-purified diet containing 30-mg Zn/kg diet at weaning. Body weights and fat pad weights including epididymal, retroperitoneal, and femoral subcutaneous fat pads were measured at 16 weeks of age. We detected two significant QTLs (p < 0.05) for body weight and fat deposit. One was in the F2 Znt7 KO population and the other in the F2 WT population. In Znt7 KO mice, the body weight and fat deposit was significantly linked to a locus on chromosome 7 ranging from 64.3 to 78.3 Mb. In WT mice, a significant linkage of retroperitoneal fat mass was found on chromosome 8 between 14.5 and 63.5 Mb. In addition, several other suggestive QTLs (p < 0.63) for body weight and fat accumulation were detected in Znt7 KO and WT mice. In conclusion, the QTLs identified in this study may provide new hints to uncover the genes linking cellular zinc status to growth and body fat accumulation.
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Affiliation(s)
- Surapun Tepaamorndech
- Integrative Genetics and Genomics Graduate Group, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA
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Hatoum IJ, Greenawalt DM, Cotsapas C, Daly MJ, Reitman ML, Kaplan LM. Weight loss after gastric bypass is associated with a variant at 15q26.1. Am J Hum Genet 2013; 92:827-34. [PMID: 23643386 DOI: 10.1016/j.ajhg.2013.04.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 04/02/2013] [Accepted: 04/08/2013] [Indexed: 12/26/2022] Open
Abstract
The amount of weight loss attained after Roux-en-Y gastric bypass (RYGB) surgery follows a wide and normal distribution, and recent evidence indicates that this weight loss is due to physiological, rather than mechanical, mechanisms. To identify potential genetic factors associated with weight loss after RYGB, we performed a genome-wide association study (GWAS) of 693 individuals undergoing RYGB and then replicated this analysis in an independent population of 327 individuals undergoing RYGB. We found that a 15q26.1 locus near ST8SIA2 and SLCO3A1 was significantly associated with weight loss after RYGB. Expression of ST8SIA2 in omental fat of these individuals at baseline was significantly associated with weight loss after RYGB. Gene expression analysis in RYGB and weight-matched, sham-operated (WMS) mice revealed that expression of St8sia2 and Slco3a1 was significantly altered in metabolically active tissues in RYGB-treated compared to WMS mice. These findings provide strong evidence for specific genetic influences on weight loss after RYGB and underscore the biological nature of the response to RYGB.
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Affiliation(s)
- Ida J Hatoum
- Obesity, Metabolism, and Nutrition Institute and Gastrointestinal Unit, Massachusetts General Hospital, Boston, MA 02114, USA
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