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Guo Z, Lv L, Liu D, Ma H, Radović Č. Effect of SNPs on Litter Size in Swine. Curr Issues Mol Biol 2024; 46:6328-6345. [PMID: 39057020 PMCID: PMC11276056 DOI: 10.3390/cimb46070378] [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: 03/18/2024] [Revised: 05/22/2024] [Accepted: 06/06/2024] [Indexed: 07/28/2024] Open
Abstract
Although sows do not directly enter the market, they play an important role in piglet breeding on farms. They consume large amounts of feed, resulting in a significant environmental burden. Pig farms can increase their income and reduce environmental pollution by increasing the litter size (LS) of swine. PCR-RFLP/SSCP and GWAS are common methods to evaluate single-nucleotide polymorphisms (SNPs) in candidate genes. We conducted a systematic meta-analysis of the effect of SNPs on pig LS. We collected and analysed data published over the past 30 years using traditional and network meta-analyses. Trial sequential analysis (TSA) was used to analyse population data. Gene set enrichment analysis and protein-protein interaction network analysis were used to analyse the GWAS dataset. The results showed that the candidate genes were positively correlated with LS, and defects in PCR-RFLP/SSCP affected the reliability of candidate gene results. However, the genotypes with high and low LSs did not have a significant advantage. Current breeding and management practices for sows should consider increasing the LS while reducing lactation length and minimizing the sows' non-pregnancy period as much as possible.
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Affiliation(s)
- Zhenhua Guo
- Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Harbin 150086, China
| | - Lei Lv
- Wood Science Research Institute, Heilongjiang Academy of Forestry, No. 134 Haping Road, Harbin 150080, China
| | - Di Liu
- Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Harbin 150086, China
| | - Hong Ma
- Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, No. 368 Xuefu Road, Harbin 150086, China
| | - Čedomir Radović
- Department of Pig Breeding and Genetics, Institute for Animal Husbandry, Autoput 16, 11080 Belgrade, Serbia
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Yurina A, Skovorodin E, Dolmatova I. Evaluation of reproductive traits and ovarian and uterine morphology of sows with different genotypes for the estrogen receptor, prolactin receptor, and follicle-stimulating hormone subunit beta genes. CANADIAN JOURNAL OF VETERINARY RESEARCH = REVUE CANADIENNE DE RECHERCHE VETERINAIRE 2021; 85:186-192. [PMID: 34248262 PMCID: PMC8243814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/05/2021] [Indexed: 06/13/2023]
Abstract
The purpose of this study was to analyze the morpho-functional features of the ovaries and uterus of sows with different genotypes for the estrogen receptor (ESR), prolactin receptor (PRLR), and follicle-stimulating hormone subunit beta (FSHβ) genes associated with reproductive traits. Healthy Large White sows were studied. The genotypic status of the ESR, PRLR, and FSHβ genes was detected by polymerase chain reaction-restriction fragment length polymorphism. The structure of the ovaries and uterus was studied using quantitative assessment of organs and histological research. Sows with the ESR BB genotype significantly exceeded animals with the ESR AA genotype in milk yield (by 0.3 kg) and in the number of piglets at birth (by 0.9 animals) and at weaning (by 0.7 animals). Sows with the ESR AB genotype were midway between those with ESR BB and ESR AA genotypes in terms of these reproductive traits. Animals with the PRLR AA genotype significantly exceeded those with the PRLR BB genotype in the number of piglets born (P < 0.05); the differences in litter weight at birth were not significant. Compared to other genotypes, sows with genotypes ESR BB (P < 0.05) and PRLR AA (AB) (P < 0.05) had larger uteruses and more yellow bodies, tertiary follicles, and primordial follicles in their ovaries. Animals with the FSHβ BB genotype significantly exceeded animals with the FSHβ AB genotype in the length of uterus by 21 cm (P < 0.05).
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Affiliation(s)
- Alena Yurina
- Department of Morphology, Pathology, Pharmacy and Non-Communicable Diseases (Yurina, Skovorodin) and Department of Beekeeping, Small Animal Science and Breeding of Animals, Laboratory of Molecular Genetics (Dolmatova), Federal State Budgetary Educational Establishment of Higher Education, Bashkir State Agrarian University, Ufa, Russia
| | - Evgeny Skovorodin
- Department of Morphology, Pathology, Pharmacy and Non-Communicable Diseases (Yurina, Skovorodin) and Department of Beekeeping, Small Animal Science and Breeding of Animals, Laboratory of Molecular Genetics (Dolmatova), Federal State Budgetary Educational Establishment of Higher Education, Bashkir State Agrarian University, Ufa, Russia
| | - Irina Dolmatova
- Department of Morphology, Pathology, Pharmacy and Non-Communicable Diseases (Yurina, Skovorodin) and Department of Beekeeping, Small Animal Science and Breeding of Animals, Laboratory of Molecular Genetics (Dolmatova), Federal State Budgetary Educational Establishment of Higher Education, Bashkir State Agrarian University, Ufa, Russia
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Han Y, Chen Y, Yang F, Sun X, Zeng S. Mechanism underlying the stimulation by IGF-1 of LHCGR expression in porcine granulosa cells. Theriogenology 2021; 169:56-64. [PMID: 33933758 DOI: 10.1016/j.theriogenology.2021.04.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 04/14/2021] [Accepted: 04/19/2021] [Indexed: 11/18/2022]
Abstract
IGF-1 plays important roles in mammalian fertility by promoting cell growth and increasing steroid hormone secretion. Although IGF-1 significantly upregulated luteinizing hormone/choriogonadotropin receptor (LHCGR) gene expression in granulosa cells in a previous study, the mechanism was unclear. The present experiment was designed to primarily explore the regulation of LHCGR expression by IGF-1. First, based on a porcine LHCGR double-luciferase reporter experiment, c-Fos significantly inhibited the activity of the LHCGR promoter. Second, porcine granulosa cells were cultured in vitro with IGF-1, and we observed that the expression of LHCGR was significantly increased and the expression of c-Fos mRNA significantly reduced. After c-Fos overexpression in granulosa cells, IGF-1 attenuated the inhibitory effect of c-Fos on LHCGR. Furthermore, the level of LHCGR mRNA stimulated by IGF-1 in the presence of SB203580 was markedly lower than that of IGF-1 alone action. In conclusion, IGF-1 enhanced the expression of LHCGR by regulating c-Fos in granulosa cells, which may be mediated by the p38MAPK-signaling pathway.
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Affiliation(s)
- Ying Han
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China; College of Agronomy, Liaocheng University, Liaocheng, 252000, Shandong, China
| | - Yanhong Chen
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Feng Yang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Xiaomei Sun
- Jiangsu Key Laboratory of Animal Genetics, Breeding and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Shenming Zeng
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
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Liu Y, Yang Y, Li W, Zhang Y, Yang Y, Li H, Geng Z, Ao H, Zhou R, Li K. NRDR inhibits estradiol synthesis and is associated with changes in reproductive traits in pigs. Mol Reprod Dev 2018; 86:63-74. [PMID: 30372551 PMCID: PMC6587779 DOI: 10.1002/mrd.23080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 10/21/2018] [Indexed: 02/06/2023]
Abstract
Cumulus cells secreting steroid hormones have important functions in oocyte development. Several members of the short-chain dehydrogenase/reductase (SDR) family are critical to the biosynthesis of steroid hormones. NADPH-dependent retinol dehydrogenase/reductase ( NRDR), a member of the SDR superfamily, is overexpressed in pig breeds that also show high levels of androstenone. However, the potential functions and regulatory mechanisms of NRDR in pig ovaries have not been reported to date. The present study demonstrated that NRDR is highly expressed in pig ovaries and is specifically located in cumulus granulosa cells. Functional studies showed that NRDR inhibition increased estradiol synthesis. Both pregnant mare serum gonadotropin and human chorionic gonadotropin downregulated the expression of NRDR in pig cumulus granulosa cells. When the relationship between reproductive traits and single-nucleotide polymorphisms (SNPs) of the NRDR gene was examined, we found that two SNPs affected reproductive traits. SNP rs701332503 was significantly associated with a decrease in the total number of piglets born during multiparity, and rs326982309 was significantly associated with an increase in the average birth weight during primiparity. Thus, NRDR has an important role in steroid hormone biosynthesis in cumulus granulosa cells, and NRDR SNPs are associated with changes in porcine reproduction traits.
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Affiliation(s)
- Ying Liu
- The State Key Laboratory for Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yalan Yang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Wentong Li
- The State Key Laboratory for Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China.,College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui, China
| | - Yanmin Zhang
- The State Key Laboratory for Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yanzhao Yang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Hua Li
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Zhaoyu Geng
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui, China
| | - Hong Ao
- The State Key Laboratory for Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Rong Zhou
- The State Key Laboratory for Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Kui Li
- The State Key Laboratory for Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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