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Jin Z, Liu L, Xu C, Yan C, Li S, Geng T, Gong D. Differential regulation on C5 expression in goose versus mammals by glucose/palmitate provides a potential protection for goose fatty liver. Anim Sci J 2021; 92:e13672. [PMID: 34904771 DOI: 10.1111/asj.13672] [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: 09/11/2021] [Revised: 11/11/2021] [Accepted: 11/18/2021] [Indexed: 11/29/2022]
Abstract
Goose fatty liver is a specific type of nonalcoholic fatty liver that is protected from harmful effects associated with severe steatosis. Our previous findings suggest that suppression of the complement C5 may be relevant, but the mechanism is unclear. Therefore, in this study, we first verified the expression pattern of complement genes (including C5) during goose fatty liver formation and then determined the liver fat content and fatty acid composition by high-performance liquid chromatography (HPLC), followed by selecting the differential metabolites to treat HepG2, goose and mouse primary hepatocytes, aiming to explore the mechanism of C5 and inflammation suppression in goose fatty liver. The data confirmed the suppression of complement genes (including C5) in goose fatty livers. Moreover, fat content was significantly higher in fatty liver versus normal ones, with oleic acid and palmitic acid dominantly accounting for the difference. In line with this, high concentration of palmitate led to down regulation of C5 expression in goose primary hepatocytes whereas upregulation in mouse primary hepatocytes and HepG2 cells. In conclusion, regulation on C5 expression by fatty liver related factors including high level of palmitic acid may contribute to the protection of goose liver from severe hepatic steatosis.
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Affiliation(s)
- Zidi Jin
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Long Liu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Cheng Xu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Chunchi Yan
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Shuo Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Tuoyu Geng
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Daoqing Gong
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
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Tang B, Qiu J, Hu S, Li L, Wang J. Role of stearyl-coenzyme A desaturase 1 in mediating the effects of palmitic acid on endoplasmic reticulum stress, inflammation, and apoptosis in goose primary hepatocytes. Anim Biosci 2020; 34:1210-1220. [PMID: 33152216 PMCID: PMC8255868 DOI: 10.5713/ajas.20.0444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 10/05/2020] [Indexed: 11/27/2022] Open
Abstract
Objective Unlike mammals, goose fatty liver shows a strong tolerance to fatty acids without obvious injury. Stearyl-coenzyme A desaturase 1 (SCD1) serves crucial role in desaturation of saturated fatty acids (SAFs), but its role in the SAFs tolerance of goose hepatocytes has not been reported. This study was conducted to explore the role of SCD1 in regulating palmitic acid (PA) tolerance of goose primary hepatocytes. Methods 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide was examined to reflect the effect of PA on hepatocytes viability, and quantitative polymerase chain reaction was used to detect the mRNA levels of several genes related to endoplasmic reticulum (ER) stress, inflammation, and apoptosis, and the role of SCD1 in PA tolerance of goose hepatocytes was explored using RNA interfere. Results Our results indicated that goose hepatocytes exhibited a higher tolerant capacity to PA than human hepatic cell line (LO2 cells). In goose primary hepatocytes, the mRNA levels of fatty acid desaturation-related genes (SCD1 and fatty acid desaturase 2) and fatty acid elongate enzyme-related gene (elongase of very long chain fatty acids 6) were significantly upregulated with 0.6 mM PA treatment. However, in LO2 cells, expression of ER stress-related genes (x box-binding protein, binding immunoglobulin protein, and activating transcription factor 6), inflammatory response-related genes (interleukin-6 [IL-6], interleukin-1β [IL-1β], and interferon-γ) and apoptosis-related genes (bcl-2-associated X protein, b-cell lymphoma 2, Caspase-3, and Caspase-9) was significantly enhanced with 0.6 mM PA treatment. Additionally, small interfering RNA (siRNA) mediated downregulation of SCD1 significantly reduced the PA tolerance of goose primary hepatocytes under the treatment of 0.6 mM PA; meanwhile, the mRNA levels of inflammatory-related genes (IL-6 and IL-1β) and several key genes involved in the phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT), forkhead box O1 (FoxO1), mammalian target of rapamycin and AMPK pathways (AKT1, AKT2, FoxO1, and sirtuin 1), as well as the protein expression of cytochrome C and the apoptosis rate were upregulated. Conclusion In conclusion, our data suggested that SCD1 was involved in enhancing the PA tolerance of goose primary hepatocytes by regulating inflammation- and apoptosis-related genes expression.
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Affiliation(s)
- Bincheng Tang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory, Sichuan Agricultural University, Chengdu, Sichuan, 61130, China
| | - Jiamin Qiu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory, Sichuan Agricultural University, Chengdu, Sichuan, 61130, China
| | - Shenqiang Hu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory, Sichuan Agricultural University, Chengdu, Sichuan, 61130, China
| | - Liang Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory, Sichuan Agricultural University, Chengdu, Sichuan, 61130, China
| | - Jiwen Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory, Sichuan Agricultural University, Chengdu, Sichuan, 61130, China
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Wang G, Jin L, Li Y, Tang Q, Hu S, Xu H, Gill CA, Li M, Wang J. Transcriptomic analysis between Normal and high-intake feeding geese provides insight into adipose deposition and susceptibility to fatty liver in migratory birds. BMC Genomics 2019; 20:372. [PMID: 31088359 PMCID: PMC6518675 DOI: 10.1186/s12864-019-5765-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 05/03/2019] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Dysregulation of adipogenesis causes metabolic diseases, like obesity and fatty liver. Migratory birds such as geese have a high tolerance of massive energy intake and exhibit little pathological development. Domesticated goose breeds, derivatives of the wild greyleg goose (Anser anser) or swan goose (Anser cygnoides), have high tolerance of energy intake resembling their ancestor species. Thus, goose is potentially a model species to study mechanisms associated with adipogenesis. RESULTS Phenotypically, goose liver exhibited higher fat accumulation than adipose tissues during fattening (liver increased by 3.35 fold than 1.65 fold in adipose), showing a priority of fat accumulation in liver. We found the number of differentially expressed genes in liver (13.97%) was nearly twice the number of that in adipose (6.60%). These differentially expressed genes in liver function in several important lipid metabolism pathways, immune response, regulation of cancer, while in adipose, terms closely related to protein binding, gluconeogenesis were enriched. Typically, genes like MDH2 and SCD, which have key roles in glycolysis and fatty acids metabolism, had higher fold change in liver than in adipose tissues. Three hundred two differentially expressed long noncoding RNAs involved in regulation of metabolism in liver were also identified. For example, lncRNA XLOC_292762, which was 5.7 kb downstream of FERMT2, a gene involved phosphatidylinositol-3,4,5-trisphosphate binding, was significantly down-regulated after the high-intake feeding period. Further investigation of documented obesity-related orthologous genes in goose suggested that understanding the evolutionary split from mammals in adipogenesis will make goose fatty liver a better resource for future research. CONCLUSIONS Our research reveals that goose uses liver as the major tissue to regulate a distinct lipid synthesis and degradation flux and the dynamic expression network analyses showed numerous layers of positive responses to both massive energy intake and possible pathological development. Our results offer insights into goose adipogenesis and provide a new perspective for research in human metabolic dysregulation.
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Affiliation(s)
- Guosong Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China.,Department of Animal Science, Texas A&M University, College Station, TX, 77843, USA
| | - Long Jin
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China
| | - Yan Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China
| | - Qianzi Tang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China
| | - Silu Hu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China
| | - Hengyong Xu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China
| | - Clare A Gill
- Department of Animal Science, Texas A&M University, College Station, TX, 77843, USA
| | - Mingzhou Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China.
| | - Jiwen Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China.
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Xu HY, Tang H, Pan ZX, Li L, Han CC, Liu HH, He H, Kang B, Hu JW, Xia L, Wang Y, Wang JW. Molecular Cloning and Mrna Expression Analysis of Sichuan White Goose (Anser Cygnoides) Chrebp Gene. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2017. [DOI: 10.1590/1806-9061-2017-0482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- HY Xu
- Sichuan Agricultural University, China
| | - H Tang
- Sichuan Agricultural University, China
| | - ZX Pan
- Medical College of Soochow University, China
| | - L Li
- Sichuan Agricultural University, China
| | - CC Han
- Sichuan Agricultural University, China
| | - HH Liu
- Sichuan Agricultural University, China
| | - H He
- Sichuan Agricultural University, China
| | - B Kang
- Sichuan Agricultural University, China
| | - JW Hu
- Sichuan Agricultural University, China
| | - L Xia
- Sichuan Agricultural University, China
| | - Y Wang
- Sichuan Agricultural University, China
| | - JW Wang
- Sichuan Agricultural University, China
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Liu L, Zhao X, Wang Q, Sun X, Xia L, Wang Q, Yang B, Zhang Y, Montgomery S, Meng H, Geng T, Gong D. Prosteatotic and Protective Components in a Unique Model of Fatty Liver: Gut Microbiota and Suppressed Complement System. Sci Rep 2016; 6:31763. [PMID: 27550859 PMCID: PMC4994046 DOI: 10.1038/srep31763] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 07/27/2016] [Indexed: 01/07/2023] Open
Abstract
Goose can develop severe hepatic steatosis without overt injury, thus it may serve as a unique model for uncovering how steatosis-related injury is prevented. To identify the markedly prosteatotic and protective mechanisms, we performed an integrated analysis of liver transcriptomes and gut microbial metagenomes using samples collected from overfed and normally-fed geese at different time points. The results indicated that the fatty liver transcriptome, initially featuring a ‘metabolism’ pathway, was later joined by ‘cell growth and death’ and ‘immune diseases’ pathways. Gut microbiota played a synergistic role in the liver response as microbial and hepatic genes affected by overfeeding shared multiple pathways. Remarkably, the complement system, an inflammatory component, was comprehensively suppressed in fatty liver, which was partially due to increased blood lactic acid from enriched Lactobacillus. Data from in vitro studies suggested that lactic acid suppressed TNFα via the HNF1α/C5 pathway. In conclusion, gut microbes and their hosts respond to excess energy influx as an organic whole, severe steatosis and related tolerance of goose liver may be partially attributable to gut microbiotic products and suppressed complement system, and lactic acid from gut microbiota participates in the suppression of hepatic TNFα/inflammation through the HNF1α/C5 pathway.
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Affiliation(s)
- Long Liu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Xing Zhao
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Qian Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Xiaoxian Sun
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Lili Xia
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Qianqian Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Biao Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Yihui Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Sean Montgomery
- Department of Botany, University of British Columbia, 6270 University Boulevard, British Columbia, V6T 1Z4, Canada
| | - He Meng
- School of Agriculture and Biology, Shanghai Jiaotong University; Shanghai Key Laboratory of Veterinary Biotechnology, 800 Dongchuan Road, Shanghai 200240, China
| | - Tuoyu Geng
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Daoqing Gong
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
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Wang O, Liu J, Cheng Q, Guo X, Wang Y, Zhao L, Zhou F, Ji B. Effects of ferulic acid and γ-oryzanol on high-fat and high-fructose diet-induced metabolic syndrome in rats. PLoS One 2015; 10:e0118135. [PMID: 25646799 PMCID: PMC4315454 DOI: 10.1371/journal.pone.0118135] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 01/05/2015] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The high morbidity of metabolic dysfunction diseases has heightened interest in seeking natural and safe compounds to maintain optimal health. γ-Oryzanol (OZ), the ferulic acid (FA) ester with phytosterols, mainly present in rice bran has been shown to improve markers of metabolic syndrome. This study investigates the effects of FA and OZ on alleviating high-fat and high-fructose diet (HFFD)-induced metabolic syndrome parameters. METHODS Male SD rats were fed with a regular rodent diet, HFFD, or HFFD supplemented with 0.05% FA or 0.16% OZ (equimolar concentrations) for 13 weeks. Food intake, organ indices, serum lipid profiles, glucose metabolism, insulin resistance (IR) index and cytokine levels were analyzed. The mechanisms were further investigated in oleic acid-stimulated HepG2 cells by analyzing triglyceride (TG) content and lipogenesis-related gene expressions. RESULTS In the in vivo study, FA and OZ exhibited similar effects in alleviating HFFD-induced obesity, hyperlipidemia, hyperglycemia, and IR. However, only OZ treatment significantly decreased liver index and hepatic TG content, lowered serum levels of C-reactive protein and IL-6, and increased serum concentration of adiponectin. In the in vitro assay, only OZ administration significantly inhibited intracellular TG accumulation and down-regulated expression of stearoyl coenzyme-A desaturase-1, which might facilitate OZ to enhance its hepatoprotective effect. CONCLUSION OZ is more effective than FA in inhibiting hepatic fat accumulation and inflammation. Thus, FA and OZ could be used as dietary supplements to alleviate the deleterious effects of HFFD.
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Affiliation(s)
- Ou Wang
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Jia Liu
- China National Research Institute of Food & Fermentation Industries, Beijing, China
| | - Qian Cheng
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Xiaoxuan Guo
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yong Wang
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Liang Zhao
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Feng Zhou
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Baoping Ji
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
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Ding N, Han Q, Li Q, Zhao X, Li J, Su J, Wang Q. Comprehensive analysis of Sichuan white geese (Anser cygnoides) transcriptome. Anim Sci J 2014; 85:650-9. [PMID: 24725216 DOI: 10.1111/asj.12197] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 12/20/2013] [Indexed: 12/17/2022]
Abstract
High-throughput RNA sequencing was performed for comprehensively analyzing the transcriptome of geese. A total of 28,803,759 bp of raw sequence data was generated by 454 GS Flx+. After removal of adaptor sequences, 28,730,361 bp remained and 117,279 reads were obtained, with an average length of 244 bases. Simultaneously, complementary DNA samples from two different reproductive stages of goose ovarian, hypothalamus and pituitary tissue were sequenced separately using Illumina MiSeq platform. A total of 12 688 673 148 bp of raw sequence data were generated by Illumina MiSeq. After removal of adaptor sequences, 8 198 126 562 bp remained and 60 382 786 clean reads were obtained, with an average length of 135 bases. Assembly of all the reads from both 454 Flx+ and Illumina platforms formed 56,839 contigs. The sequence size ranges from 38 to 28,206 bp in size, with an average size of 2584 bp and an N50 of 4624. The assembly produced a substantial number of large contigs: 35,545 (62.5%) were longer than 1 kb, of which 8850 (15.6%) were longer than 5 kb. The sequencing depth was 85 X on average. We performed comprehensive function annotations on unigenes including protein sequence similarity, gene ontology (GO) term classification, and Kyoto Encylcopedia of Genes and Genomes (KEGG) pathway enrichment. GO analysis showed that approximately 63% of the contigs had annotation information, among the 35,953 annotated isotigs in Nr database, 24,783 (68.9%) sequences were assigned with one or more GO terms. There were 14,634 (40.7%) isotigs for biological processes, 10,557(29.3%) isotigs for cellular component, 22,607 (62.9%) isotigs for molecular function. The result of KEGG pathway mapping 8926 sequences had the pathway annotation, and took part in 477 pathways. Additionally, 10,685 simple sequence repeat (SSR) markers were identified from the assembled sequences. The most frequent repeat motifs were trinucleotides, which accounted for 53.03% of all SSRs, followed by dinucleotides (39.9%), tetranucleotides (5.08%), pentanucleotides (1.68%) and hexanucleotides (0.32%). Transcriptome sequencing on mixture issue of the geese yielded substantial transcriptional sequences and potentially useful SSR markers which provide an important data source for geese research.
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Affiliation(s)
- Ning Ding
- Chongqing Academy of Animal Science, Chongqing, China
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Kim DC, Jun DW, Jang EC, Kim SH, Kim EK, Lee SP, Lee KN, Lee HL, Lee OY, Yoon BC, Choi HS. Lipoic Acid prevents the changes of intracellular lipid partitioning by free Fatty Acid. Gut Liver 2013; 7:221-7. [PMID: 23560159 PMCID: PMC3607777 DOI: 10.5009/gnl.2013.7.2.221] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 07/25/2012] [Accepted: 07/28/2012] [Indexed: 11/17/2022] Open
Abstract
Background/Aims It is suggested that the hepatic lipid composition is more important than lipid quantity in the pathogenesis of non-alcoholic steatohepatitis. We examined whether lipoic acid (LA) could alter intrahepatic lipid composition and free cholesterol distribution. Methods HepG2 cells were cultured with palmitic acid (PA) with and without LA. Apoptosis, changes of the mitochondrial structure, intracellular lipid partitioning, and reactive oxygen species (ROS) activity were measured. Results Free fatty acid (FA) increased apoptosis, and LA co-treatment prevented this lipotoxicity (apoptosis in controls vs PA vs PA+LA, 0.5% vs 19.5% vs 1.6%, p<0.05). LA also restored the intracellular mitochondrial DNA copy number (553±33.8 copies vs 291±14.55 copies vs 421±21.05 copies, p<0.05) and reversed the morphological changes induced by PA. In addition, ROS was increased in response to PA and was decreased in response to LA co-treatment (41,382 relative fluorescence unit [RFU] vs 43,646 RFU vs 41,935 RFU, p<0.05). LA co-treatment increased the monounsaturated and polyunsaturated FA concentrations and decreased the total saturated FA fraction. It also prevented the movement of intracellular free cholesterol from the cell membrane to the cytoplasm. Conclusions LA opposes free FA-generated lipotoxicity by altering the intracellular lipid composition and free cholesterol distribution.
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Affiliation(s)
- Dong Chan Kim
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
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Wu XX, Yang ZP, Shi XK, Li JY, Ji DJ, Mao YJ, Chang LL, Gao HJ. Association of SCD1 and DGAT1 SNPs with the intramuscular fat traits in Chinese Simmental cattle and their distribution in eight Chinese cattle breeds. Mol Biol Rep 2011; 39:1065-71. [PMID: 21607624 DOI: 10.1007/s11033-011-0832-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Accepted: 05/05/2011] [Indexed: 10/18/2022]
Abstract
Intramuscular fat (IMF) is a key parameter for evaluation of nutritional quality of beef, with its endogenous synthesis regulated by stearoyl CoA desaturase (SCD1) and diacylglycerol-acyl transferase 1 (DGAT1) genes in cattle. The object of this research was to evaluate the effect of SCD1 and DGAT1 polymorphisms on IMF trait in beef cattle and to estimate the frequency distribution of SNPs in the two genes in Chinese cattle populations. The SCD1 and DGAT1 polymorphisms were detected by PCR-single strand conformation polymorphism (PCR-SSCP) method in Chinese Simmental cattle and their associations with IMF traits were analyzed using the general linear model (GLM). The frequency distribution of SNPs in SCD1 and DGAT1 genes were detected by PCR-SSCP method and analyzed in seven other cattle populations. The results showed significant associations of SNPs SCD1-878, SCD1-762, and DGAT1 10433 and 10434 with IMF (%) and shearing force values (SFV; kg) in Chinese Simmental cattle. A haplotype combining SCD1-878C, SCD1-762T, and DGAT1 10433 and 10434-GC had the highest IMF, marbling score and shearing force. The polymorphic investigation indicated that the frequency of SCD1-878C or SCD1-762T was significantly higher in Chinese southern cattle (Leiqiong, Yunnan High pump, BMY or Minnan Cattle) than in Chinese northern cattle (Chinese Simmental, Luxi Cattle, Bohai Black or Chinese Holstein), while the frequency of DGAT1 10433 and 10434-GC in Chinese indigenous breed (Leiqiong, Yunnan High pump, BMY, Luxi Cattle, Bohai Black, or Minnan Cattle) was significantly lower than breeds with imported blood (Chinese Simmental or Chinese Holstein). These findings demonstrated that both the SCD1 and DGAT1 SNPs were prospect genetic markers for IMF traits, and the SCD1 SNPs could be used as a genetic marker for southern or northern blood in Chinese cattle.
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Affiliation(s)
- X X Wu
- Key Lab of Animal Genetics, Breeding and Molecular Design of Jangsu Province, College of Animal Science and Technology Yangzhou University, Yangzhou 225009, People's Republic of China
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