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Liu R, Fang X, Lu X, Liu Y, Li Y, Bai X, Ding X, Yang R. Polymorphisms of the SCD1 Gene and Its Association Analysis with Carcass, Meat Quality, Adipogenic Traits, Fatty Acid Composition, and Milk Production Traits in Cattle. Animals (Basel) 2024; 14:1759. [PMID: 38929378 PMCID: PMC11200384 DOI: 10.3390/ani14121759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 05/24/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024] Open
Abstract
Stearoyl-CoA desaturase-1 (SCD1) is a key enzyme in the biosynthesis of monounsaturated fatty acids and is considered a candidate gene for improving milk and meat quality traits. Sanger sequencing was employed to investigate the genetic polymorphism of the fifth exon and intron of bovine SCD1, revealing four SNPs, g.21272246 A>G, g.21272306 T>C, g.21272422 C>T, and g.21272529 A>G. Further variance analysis and multiple comparisons were conducted to examine the relationship between variation sites and economic traits in Chinese Simmental cattle, as well as milk production traits in Holstein cows. The findings revealed these four loci exhibited significant associations with carcass traits (carcass weight, carcass length, backfat thickness, and waist meat thickness), meat quality (pH value, rib eye area, and marbling score), adipogenic traits (fat score and carcass fat coverage rate), and fatty acid composition (linoleic acid and α-linolenic acid). Furthermore, these loci were additionally found to be significantly associated with average milk yield and milk fat content in cows. In addition, a haplotype analysis of combinations of SNPs showed that H2H3 has a significant association with adipogenic traits and H2H2 was associated with higher levels of linoleic acid and α-linolenic acid than the other combinations. These results suggest that the four SNPs are expected to be prospective genetic markers for the above economic traits. In addition, the function of SNPs in exon 5 of SCD1 on gene expression and protein structure needs to be explored in the future.
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Affiliation(s)
- Ruimin Liu
- College of Animal Science, Jilin University, Changchun 130062, China (X.L.)
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300392, China
| | - Xibi Fang
- College of Animal Science, Jilin University, Changchun 130062, China (X.L.)
| | - Xin Lu
- College of Animal Science, Jilin University, Changchun 130062, China (X.L.)
| | - Yue Liu
- College of Animal Science, Jilin University, Changchun 130062, China (X.L.)
| | - Yue Li
- College of Animal Science, Jilin University, Changchun 130062, China (X.L.)
| | - Xue Bai
- College of Animal Science, Jilin University, Changchun 130062, China (X.L.)
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300392, China
| | - Xiangbin Ding
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300392, China
| | - Runjun Yang
- College of Animal Science, Jilin University, Changchun 130062, China (X.L.)
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Lu X, Fang X, Mi J, Liu Y, Liu R, Li G, Li Y, Yang R. Effects of Adipose Tissue-Specific Knockout of Delta-like Non-Canonical Notch Ligand 1 on Lipid Metabolism in Mice. Int J Mol Sci 2023; 25:132. [PMID: 38203302 PMCID: PMC10778801 DOI: 10.3390/ijms25010132] [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: 10/31/2023] [Revised: 12/09/2023] [Accepted: 12/12/2023] [Indexed: 01/12/2024] Open
Abstract
Delta-like non-canonical Notch ligand 1 (DLK1), which inhibits the differentiation of precursor adipocytes, is a recognized marker gene for precursor adipocytes. Lipids play a crucial role in energy storage and metabolism as a vital determinant of beef quality. In this study, we investigated the mechanism of the DLK1 gene in lipid metabolism by constructing adipose tissue-specific knockout mice. We examined some phenotypic traits, including body weight, liver coefficient, fat index, the content of triglyceride (TG) and cholesterol (CHOL) in abdominal white adipose tissue (WAT) and blood. Subsequently, the fatty acid content and genes related to lipid metabolism expression were detected in DLK1-/- and wild-type mice via GC-MS/MS analysis and quantitative real-time PCR (qRT-PCR), respectively. The results illustrated that DLK1-/- mice exhibited significant abdominal fat deposition compared to wild-type mice. HE staining and immunohistochemistry (IHC) results showed that the white adipocytes of DLK1-/- mice were larger, and the protein expression level of DLK1-/- was significantly lower. Regarding the blood biochemical parameters of female mice, DLK1-/- mice had a strikingly higher triglyceride content (p < 0.001). The fatty acid content in DLK1-/- mice was generally reduced. There was a significant reduction in the expression levels of the majority of genes that play a crucial role in lipid metabolism. This study reveals the molecular regulatory mechanism of fat metabolism in mice and provides a molecular basis and reference for the future application of the DLK1 gene in the breeding of beef cattle with an excellent meat quality traits. It also provides a molecular basis for unravelling the complex and subtle relationship between adipose tissue and health.
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Affiliation(s)
- Xin Lu
- College of Animal Sciences, Jilin University, Changchun 130062, China; (X.L.); (X.F.); (J.M.); (Y.L.); (G.L.); (Y.L.)
| | - Xibi Fang
- College of Animal Sciences, Jilin University, Changchun 130062, China; (X.L.); (X.F.); (J.M.); (Y.L.); (G.L.); (Y.L.)
| | - Jiaqi Mi
- College of Animal Sciences, Jilin University, Changchun 130062, China; (X.L.); (X.F.); (J.M.); (Y.L.); (G.L.); (Y.L.)
| | - Yue Liu
- College of Animal Sciences, Jilin University, Changchun 130062, China; (X.L.); (X.F.); (J.M.); (Y.L.); (G.L.); (Y.L.)
| | - Ruimin Liu
- College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300392, China;
| | - Guanghui Li
- College of Animal Sciences, Jilin University, Changchun 130062, China; (X.L.); (X.F.); (J.M.); (Y.L.); (G.L.); (Y.L.)
| | - Yue Li
- College of Animal Sciences, Jilin University, Changchun 130062, China; (X.L.); (X.F.); (J.M.); (Y.L.); (G.L.); (Y.L.)
| | - Runjun Yang
- College of Animal Sciences, Jilin University, Changchun 130062, China; (X.L.); (X.F.); (J.M.); (Y.L.); (G.L.); (Y.L.)
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Liu J, Jiang P, Iqbal A, Ali S, Gao Z, Pan Z, Xia L, Yin F, Zhao Z. MiR-485 targets the DTX4 gene to regulate milk fat synthesis in bovine mammary epithelial cells. Sci Rep 2021; 11:7623. [PMID: 33828164 PMCID: PMC8027660 DOI: 10.1038/s41598-021-87139-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 03/17/2021] [Indexed: 11/26/2022] Open
Abstract
MicroRNAs (miRNAs) are mRNA suppressors that regulate a variety of cellular and physiological processes, including cell proliferation, apoptosis, triglyceride synthesis, fat formation, and lipolysis, by post-transcriptional processing. In previous studies, we isolated and sequenced miRNAs from mammary epithelial cells from Chinese Holstein cows with high and low milk fat percentages. MiR-485 was one of the significantly differentially expressed miRNAs that were identified. In the present study, the relationship between the candidate target gene DTX4 and miR-485 was validated by bioinformatics and real-time fluorescent quantitative PCR (qRT-PCR) and Western blot (WB) analyses in bovine mammary epithelial cells (bMECs). The results indicated that miR-485 negatively regulated the mRNA expression of the target gene DTX4. Furthermore, an shRNA interference vector for the target gene DTX4 was constructed successfully, and it increased the triglyceride content and reduced the cholesterol content of transfected cells. These results suggest that miR-485 may affect the contents of triglycerides (TGs) and cholesterol (CHOL) by targeting the DTX4 gene. This study indicates that miR-485 has a role in regulating milk fat synthesis and that miR-485 targets the DTX4 gene to regulate lipid metabolism in bMECs. These findings contribute to the understanding of the functional significance of miR-485 in milk fat synthesis.
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Affiliation(s)
- Juan Liu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, People's Republic of China
| | - Ping Jiang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, People's Republic of China
| | - Ambreen Iqbal
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, People's Republic of China
| | - Shaokat Ali
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, People's Republic of China
| | - Zhen Gao
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, People's Republic of China
| | - Ziyi Pan
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, People's Republic of China
| | - Lixin Xia
- College of Animal Science, Jilin University, Xi An Road 5333, Changchun, 130062, Jilin, People's Republic of China
| | - Fuquan Yin
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, People's Republic of China.
| | - Zhihui Zhao
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, People's Republic of China.
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Fu Y, Liu T, Song J, Jiao L, Zhou J, Bai H, Zhao Z, Chen H, Wu T, Lyv M, Zhou Y, Ying B, Xu Y. Genetic Polymorphisms of Delta-Like 1 Homolog Influence the Susceptibility to Antituberculosis Drug-Induced Hepatotoxicity. DNA Cell Biol 2020; 40:231-238. [PMID: 33297832 DOI: 10.1089/dna.2020.6080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
This study was designed to investigate the relationship between Delta-like 1 homolog (DLK1) polymorphisms and the occurrence of antituberculosis drug-induced hepatotoxicity (ATDH) in the Western Chinese Han population. A total of 746 tuberculosis patients including 118 ATDH cases and 628 non-ATDH cases were enrolled from West China Hospital of Sichuan University during 2016-2018. Ten single nucleotide polymorphisms (rs11160604, rs7149242, rs7141210, rs7155375, rs876374, rs57098752, rs2400940, rs12431758, rs4900472, and rs6575802) within DLK1 were studied by the improved multiplex ligation detection reaction method genotyping technology assay. It was found that G allele of rs11160604 was associated with an increased risk for ATDH (p = 0.001) and G allele of rs4900472 showed a protective effect for ATDH (p = 0.030). Recessive model and dominant model of rs11160604 were observed as a risk factor for ATDH predisposition, whereas the recessive model of rs4900472 was a protective one. Moreover, the interaction genetic model composed of rs11160604, rs57098752, and rs12431758 showed a combined effect for the occurrence of ATDH. Our finding was a novel one indicating that the G allele of DLK1 rs11160604 might serve as a hazard for the development of ATDH in the Western Chinese Han population.
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Affiliation(s)
- Yang Fu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Tangyuheng Liu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Jiajia Song
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Lin Jiao
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Juan Zhou
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Hao Bai
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Zhenzhen Zhao
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Hao Chen
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Tao Wu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Mengyuan Lyv
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Yi Zhou
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Binwu Ying
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Yanming Xu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
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