1
|
Xiao-Hong H, Meng W, Yang-Yang P, Jiang-Feng F, Jing-Lei W, Ling Z, Ya-Ying W, Tong-Xiang Z, Tian Z, Tian-Yi D, Yan C, Si-Jiu Y. Effect of follicle-stimulating hormone and luteinizing hormone on apoptosis, autophagy, and the release and reception of some steroid hormones in yak granulosa cells through miR-23a/ASK1 axis. Cell Signal 2024; 115:111010. [PMID: 38128707 DOI: 10.1016/j.cellsig.2023.111010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023]
Abstract
Follicle-stimulating hormone (FSH), luteinizing hormone (LH), miR-23a, apoptosis signal-regulating kinase 1(ASK1)/c-Jun N-terminal kinase (JNK), autophagy and apoptosis play crucial roles in follicular development. However, their role in yak granulosa cells (GCs) remains unknown. Therefore, we examined the effect of miR-23a, ASK1, FSH, and LH on apoptosis, autophagy, and the release and reception of some steroid hormones in these cells. Our results showed that miR-23a overexpression significantly increased the abundance of Beclin1, the LC3II/I ratio, and the number of Ad-mRFP-GFP-LC3-labeled autophagosomes, and decreased p62 abundance. Additionally, Bax abundance and the number of terminal deoxynucleotidyl transferase deoxynucleotide triphosphate nick end labeling-positive cells were reduced, while Bcl2 expression was increased. Overexpression of miR-23a also significantly increased the abundance of estradiol receptor α (ER-α) and β (ER-β) and the concentrations of estradiol (E2), progesterone (P4) in yak GCs. Here, treating yak GCs with miR-23a decreased ASK1 expression, which regulates ASK1/JNK-mediated apoptosis, autophagy, E2 and P4 levels, and ER-α/β abundance. In contrast, treatment of yak GCs with FSH (10 μg/mL) and LH (100 μg/mL) increased miR-23a abundance, regulating the subsequent effect on ASK1/JNK-mediated apoptosis, autophagy, ER-α/β abundance, and E2 and P4 concentrations. In conclusion, miR-23a enhances autophagy in yak GCs, attenuates apoptosis, and increases ER-α/β abundance and E2 and P4 concentrations by downregulating ASK1. Additionally, FSH and LH can regulate these effects of miR-23a by altering its expression. These results provide important insights that can inform the development of strategies to reduce abnormal follicular atresia and improve the reproductive rate of yaks.
Collapse
Affiliation(s)
- Han Xiao-Hong
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Wang Meng
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Pan Yang-Yang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Fan Jiang-Feng
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Wang Jing-Lei
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhao Ling
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Wang Ya-Ying
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhang Tong-Xiang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhao Tian
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Ding Tian-Yi
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Cui Yan
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Yu Si-Jiu
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China.
| |
Collapse
|
2
|
Silva DO, Fernandes Júnior GA, Fonseca LFS, Mota LFM, Bresolin T, Carvalheiro R, de Albuquerque LG. Genome-wide association study for stayability at different calvings in Nellore beef cattle. BMC Genomics 2024; 25:93. [PMID: 38254039 PMCID: PMC10804543 DOI: 10.1186/s12864-024-10020-y] [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: 08/07/2023] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
BACKGROUNDING Stayability, which may be defined as the probability of a cow remaining in the herd until a reference age or at a specific number of calvings, is usually measured late in the animal's life. Thus, if used as selection criteria, it will increase the generation interval and consequently might decrease the annual genetic gain. Measuring stayability at an earlier age could be a reasonable strategy to avoid this problem. In this sense, a better understanding of the genetic architecture of this trait at different ages and/or at different calvings is important. This study was conducted to identify possible regions with major effects on stayability measured considering different numbers of calvings in Nellore cattle as well as pathways that can be involved in its expression throughout the female's productive life. RESULTS The top 10 most important SNP windows explained, on average, 17.60% of the genetic additive variance for stayability, varying between 13.70% (at the eighth calving) and 21% (at the fifth calving). These SNP windows were located on 17 chromosomes (1, 2, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 18, 19, 20, 27, and 28), and they harbored a total of 176 annotated genes. The functional analyses of these genes, in general, indicate that the expression of stayability from the second to the sixth calving is mainly affected by genetic factors related to reproductive performance, and nervous and immune systems. At the seventh and eighth calvings, genes and pathways related to animal health, such as density bone and cancer, might be more relevant. CONCLUSION Our results indicate that part of the target genomic regions in selecting for stayability at earlier ages (from the 2th to the 6th calving) would be different than selecting for this trait at later ages (7th and 8th calvings). While the expression of stayability at earlier ages appeared to be more influenced by genetic factors linked to reproductive performance together with an overall health/immunity, at later ages genetic factors related to an overall animal health gain relevance. These results support that selecting for stayability at earlier ages (perhaps at the second calving) could be applied, having practical implications in breeding programs since it could drastically reduce the generation interval, accelerating the genetic progress.
Collapse
Affiliation(s)
- Diogo Osmar Silva
- Animal Science Department, School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Jaboticabal, SP, Brazil.
| | - Gerardo Alves Fernandes Júnior
- Animal Science Department, School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Jaboticabal, SP, Brazil
| | - Larissa Fernanda Simielli Fonseca
- Animal Science Department, School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Jaboticabal, SP, Brazil
| | - Lúcio Flávio Macedo Mota
- Animal Science Department, School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Jaboticabal, SP, Brazil
| | - Tiago Bresolin
- Animal Science Department, School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Jaboticabal, SP, Brazil
| | - Roberto Carvalheiro
- Animal Science Department, School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Jaboticabal, SP, Brazil
| | - Lucia Galvão de Albuquerque
- Animal Science Department, School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Jaboticabal, SP, Brazil.
- National Council for Scientific and Technological Development (CNPq), Brasília, Brazil.
- Present address: Departamento de Zootecnia, Via de acesso Paulo Donato Castellane s/n., São Paulo, Jaboticabal, CEP: 14884-900, Brazil.
| |
Collapse
|
3
|
Shi M, Sirard MA. Cocultured porcine granulosa cells respond to excess non-esterified fatty acids during in vitro maturation. J Ovarian Res 2021; 14:142. [PMID: 34711256 PMCID: PMC8554973 DOI: 10.1186/s13048-021-00904-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 10/13/2021] [Indexed: 01/03/2023] Open
Abstract
Background Non-esterified fatty acids (NEFAs) are one of the main lipid components of follicular fluid at concentrations that depend on circulating levels. Elevated levels of NEFAs impair oocyte quality, development potential, and may subsequently influence the metabolism and reproductive fitness of offspring. Granulosa cells (GCs) are the follicular cells that are closely communicating with the oocyte. However, the responses of GCs exposed to high levels of NEFAs when cocultured with cumulus-oocyte complexes (COCs), and how they attenuate the negative effects of NEFAs on oocytes, are unclear. Results To better understand this protective effect, monolayers of porcine GCs were cocultured with COCs during in vitro maturation (IVM) in the presence of elevated levels of NEFAs. Genomic expression analysis was conducted to explore the responses of the GCs to the elevated levels of NEFAs. After limma algorithm analysis, 1,013 genes were differentially expressed between GCs cultured with and without elevated NEFAs. Among them, 438 genes were upregulated and 575 were downregulated. The differentially expressed genes were enriched in pathways related to metabolism, inflammation, and epithelial-mesenchymal transition. Conclusions The pathways and upstream regulators suggested that the cocultured GCs responded to the elevated NEFAs with (1) inhibition of the transition from granulosa to luteal cell, (2) interactions of metabolism change, anti-inflammation, mitochondrial function, and cell transition, (3) intercommunication with cocultured COCs of anti-inflammatory factors. Supplementary Information The online version contains supplementary material available at 10.1186/s13048-021-00904-y.
Collapse
Affiliation(s)
- Meihong Shi
- Centre de recherche en reproduction, développement et santé intergénérationnelle, Faculté des Sciences de l'Agriculture et de l'Alimentation, Département des Sciences Animales, Pavillon Institut sur la Nutrition et les Aliments Fonctionnels, Université Laval, Québec, Québec, Canada
| | - Marc-André Sirard
- Centre de recherche en reproduction, développement et santé intergénérationnelle, Faculté des Sciences de l'Agriculture et de l'Alimentation, Département des Sciences Animales, Pavillon Institut sur la Nutrition et les Aliments Fonctionnels, Université Laval, Québec, Québec, Canada.
| |
Collapse
|
4
|
Hua G, George JW, Clark KL, Jonas KC, Johnson GP, Southekal S, Guda C, Hou X, Blum HR, Eudy J, Butnev VY, Brown AR, Katta S, May JV, Bousfield GR, Davis JS. Hypo-glycosylated hFSH drives ovarian follicular development more efficiently than fully-glycosylated hFSH: enhanced transcription and PI3K and MAPK signaling. Hum Reprod 2021; 36:1891-1906. [PMID: 34059912 PMCID: PMC8213452 DOI: 10.1093/humrep/deab135] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 03/31/2021] [Indexed: 12/22/2022] Open
Abstract
STUDY QUESTION Does hypo-glycosylated human recombinant FSH (hFSH18/21) have greater in vivo bioactivity that drives follicle development in vivo compared to fully-glycosylated human recombinant FSH (hFSH24)? SUMMARY ANSWER Compared with fully-glycosylated hFSH, hypo-glycosylated hFSH has greater bioactivity, enabling greater follicular health and growth in vivo, with enhanced transcriptional activity, greater activation of receptor tyrosine kinases (RTKs) and elevated phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT) and Mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) signaling. WHAT IS KNOWN ALREADY Glycosylation of FSH is necessary for FSH to effectively activate the FSH receptor (FSHR) and promote preantral follicular growth and formation of antral follicles. In vitro studies demonstrate that compared to fully-glycosylated recombinant human FSH, hypo-glycosylated FSH has greater activity in receptor binding studies, and more effectively stimulates the PKA pathway and steroidogenesis in human granulosa cells. STUDY DESIGN, SIZE, DURATION This is a cross-sectional study evaluating the actions of purified recombinant human FSH glycoforms on parameters of follicular development, gene expression and cell signaling in immature postnatal day (PND) 17 female CD-1 mice. To stimulate follicle development in vivo, PND 17 female CD-1 mice (n = 8-10/group) were treated with PBS (150 µl), hFSH18/21 (1 µg/150 µl PBS) or hFSH24 (1 µg/150 µl PBS) by intraperitoneal injection (i.p.) twice daily (8:00 a.m. and 6:00 p.m.) for 2 days. Follicle numbers, serum anti-Müllerian hormone (AMH) and estradiol levels, and follicle health were quantified. PND 17 female CD-1 mice were also treated acutely (2 h) in vivo with PBS, hFSH18/21 (1 µg) or hFSH24 (1 µg) (n = 3-4/group). One ovary from each mouse was processed for RNA sequencing analysis and the other ovary processed for signal transduction analysis. An in vitro ovary culture system was used to confirm the relative signaling pathways. PARTICIPANTS/MATERIALS, SETTING, METHODS The purity of different recombinant hFSH glycoforms was analyzed using an automated western blot system. Follicle numbers were determined by counting serial sections of the mouse ovary. Real-time quantitative RT-PCR, western blot and immunofluorescence staining were used to determine growth and apoptosis markers related with follicle health. RNA sequencing and bioinformatics were used to identify pathways and processes associated with gene expression profiles induced by acute FSH glycoform treatment. Analysis of RTKs was used to determine potential FSH downstream signaling pathways in vivo. Western blot and in vitro ovarian culture system were used to validate the relative signaling pathways. MAIN RESULTS AND THE ROLE OF CHANCE Our present study shows that both hypo- and fully-glycosylated recombinant human FSH can drive follicular growth in vivo. However, hFSH18/21 promoted development of significantly more large antral follicles compared to hFSH24 (P < 0.01). In addition, compared with hFSH24, hFSH18/21 also promoted greater indices of follicular health, as defined by lower BAX/BCL2 ratios and reduced cleaved Caspase 3. Following acute in vivo treatment with FSH glycoforms RNA-sequencing data revealed that both FSH glycoforms rapidly induced ovarian transcription in vivo, but hypo-glycosylated FSH more robustly stimulated Gαs and cAMP-mediated signaling and members of the AP-1 transcription factor complex. Moreover, hFSH18/21 treatment induced significantly greater activation of RTKs, PI3K/AKT and MAPK/ERK signaling compared to hFSH24. FSH-induced indices of follicle growth in vitro were blocked by inhibition of PI3K and MAPK. LARGE SCALE DATA RNA sequencing of mouse ovaries. Data will be shared upon reasonable request to the corresponding author. LIMITATIONS, REASONS FOR CAUTION The observations that hFSH glycoforms have different bioactivities in the present study employing a mouse model of follicle development should be verified in nonhuman primates. The gene expression studies reflect transcriptomes of whole ovaries. WIDER IMPLICATIONS OF THE FINDINGS Commercially prepared recombinant human FSH used for ovarian stimulation in human ART is fully-glycosylated FSH. Our findings that hypo-glycosylated hFSH has greater bioactivity enabling greater follicular health and growth without exaggerated estradiol production in vivo, demonstrate the potential for its development for application in human ART. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by NIH 1P01 AG029531, NIH 1R01 HD 092263, VA I01 BX004272, and the Olson Center for Women's Health. JSD is the recipient of a VA Senior Research Career Scientist Award (1IK6 BX005797). This work was also partially supported by National Natural Science Foundation of China (No. 31872352). The authors declared there are no conflicts of interest.
Collapse
Affiliation(s)
- Guohua Hua
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science & Technology, Huazhong Agricultural University, Wuhan, Hubei, China
- Department of Obstetrics and Gynecology, Olson Center for Women’s Health, University of Nebraska Medical Center, Omaha, NE, USA
| | - Jitu W George
- Department of Obstetrics and Gynecology, Olson Center for Women’s Health, University of Nebraska Medical Center, Omaha, NE, USA
- Veterans Affairs Nebraska Western Iowa Health Care System, Omaha, NE, USA
| | - Kendra L Clark
- Department of Obstetrics and Gynecology, Olson Center for Women’s Health, University of Nebraska Medical Center, Omaha, NE, USA
- Veterans Affairs Nebraska Western Iowa Health Care System, Omaha, NE, USA
| | - Kim C Jonas
- Department of Women and Children’s Health, School of Life Course Sciences, King’s College London, Guy’s Campus, London, UK
| | - Gillian P Johnson
- Department of Women and Children’s Health, School of Life Course Sciences, King’s College London, Guy’s Campus, London, UK
| | - Siddesh Southekal
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Chittibabu Guda
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Xiaoying Hou
- Department of Obstetrics and Gynecology, Olson Center for Women’s Health, University of Nebraska Medical Center, Omaha, NE, USA
| | - Haley R Blum
- Department of Obstetrics and Gynecology, Olson Center for Women’s Health, University of Nebraska Medical Center, Omaha, NE, USA
| | - James Eudy
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Viktor Y Butnev
- Department of Biological Sciences, Wichita State University, Wichita, KS, USA
| | - Alan R Brown
- Department of Biological Sciences, Wichita State University, Wichita, KS, USA
| | - Sahithi Katta
- Department of Biological Sciences, Wichita State University, Wichita, KS, USA
| | - Jeffrey V May
- Department of Biological Sciences, Wichita State University, Wichita, KS, USA
| | - George R Bousfield
- Department of Biological Sciences, Wichita State University, Wichita, KS, USA
| | - John S Davis
- Department of Obstetrics and Gynecology, Olson Center for Women’s Health, University of Nebraska Medical Center, Omaha, NE, USA
- Veterans Affairs Nebraska Western Iowa Health Care System, Omaha, NE, USA
| |
Collapse
|
5
|
Yu M, Sun X, Dai X, Gu C, Gu M, Wang A, Wei W, Yang S. Effects of Tannic Acid on Antioxidant Activity and Ovarian Development in Adolescent and Adult Female Brandt's Voles. Reprod Sci 2021; 28:2839-2846. [PMID: 33844186 DOI: 10.1007/s43032-021-00578-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 04/02/2021] [Indexed: 10/21/2022]
Abstract
It is well known that tannins can influence the reproduction of animals, but there is little research published to elucidate the mechanics of this phenomenon. The purpose of this study was to investigate the role of antioxidation in the influence of tannic acid on the ovarian development of Brandt's voles (Lasiopodomys brandtii), which is a species of prairie animal that feeds on plants containing tannins. Postnatal 4-week-old female Brandt's voles were treated with 0 (control), 0.3% (low dose), or 0.6% (high dose) tannic acid for 4 or 9 weeks (i.e., when they reached puberty [8 weeks] or sexual maturity [13 weeks], respectively). The results showed that in both adolescent and adult Brandt's voles, firstly, treatment with tannic acid produced a higher ovary coefficient (ratio of the weight of ovaries to body weight), a greater proportion of mature follicles, and an increased follicular diameter. Secondly, tannic acid increased the serum contents of luteinizing hormone, follicle-stimulating hormone, and serum estradiol. Thirdly, tannic acid elevated the levels of antioxidant enzymes (superoxide dismutase, glutathione peroxidase, and catalase) and reduced the level of malondialdehyde. Therefore, it is suggested that tannic acid may promote the ovarian development of female Brant's voles by enhancing their antioxidant capacity.
Collapse
Affiliation(s)
- Minghao Yu
- Department of College of Biological Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Xiaofeng Sun
- Department of College of Biological Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Xin Dai
- Department of College of Biological Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Chen Gu
- Department of College of Biological Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Minghui Gu
- Department of College of Biological Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Aiqin Wang
- Department of College of Biological Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Wanhong Wei
- Department of College of Biological Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Shengmei Yang
- Department of College of Biological Science and Technology, Yangzhou University, Yangzhou, 225009, China.
| |
Collapse
|
6
|
Madogwe E, Tanwar DK, Taibi M, Schuermann Y, St-Yves A, Duggavathi R. Global analysis of FSH-regulated gene expression and histone modification in mouse granulosa cells. Mol Reprod Dev 2020; 87:1082-1096. [PMID: 32892476 DOI: 10.1002/mrd.23419] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 07/31/2020] [Accepted: 08/15/2020] [Indexed: 12/12/2022]
Abstract
Follicle-stimulating hormone (FSH) regulates ovarian follicular development through a specific gene expression program. We analyzed FSH-regulated transcriptome and histone modification in granulosa cells during follicular development. We used super-stimulated immature mice and collected granulosa cells before and 48 h after stimulation with equine chorionic gonadotropin (eCG). We profiled the transcriptome using RNA-sequencing (N = 3/time-point) and genome-wide trimethylation of lysine 4 of histone H3 (H3K4me3; an active transcription marker) using chromatin immunoprecipitation and sequencing (ChIP-Seq; N = 2/time-point). Across the mouse genome, 14,583 genes had an associated H3K4me3 peak and 63-66% of these peaks were observed within ≤1 kb promoter region. There were 72 genes with differential H3K4me3 modification at 48 h eCG (absolute log fold change > 1; false discovery rate [FDR] < 0.05) relative to 0 h eCG. Transcriptome data analysis showed 1463 differentially expressed genes at 48 h eCG (absolute log fold change > 1; FDR < 0.05). Among the 20 genes with differential expression and altered H3K4me3 modification, Lhcgr had higher H3K4me3 abundance and expression, while Nrip2 had lower H3K4me3 abundance and expression. Using ChIP-qPCR, we showed that FSH-regulated expression of Lhcgr, Cyp19a1, Nppc, and Nrip2 through regulation of H3K4me3 at their respective promoters. Transcript isoform analysis using Kallisto-Sleuth tool revealed 875 differentially expressed transcripts at 48 h eCG (b > 1; FDR < 0.05). Pathway analysis of RNA-seq data demonstrated that TGF-β signaling and steroidogenic pathways were regulated at 48 h eCG. Thus, FSH regulates gene expression in granulosa cells through multiple mechanisms namely altered H3K4me3 modification and inducing specific transcripts. These data form the basis for further studies investigating how these specific mechanisms regulate granulosa cell functions.
Collapse
Affiliation(s)
- Ejimedo Madogwe
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, Qubec, Canada
| | - Deepak K Tanwar
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, Qubec, Canada.,Present address: Laboratory of Neuroepigenetics, Department of Health Sciences and Technology of the Swiss Federal Institute of Technology, Medical Faculty of the University of Zürich, Statistical Bioinformatics Group, Swiss Institute of Bioinformatics, Zürich, CH-8057, Switzerland
| | - Milena Taibi
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, Qubec, Canada
| | - Yasmin Schuermann
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, Qubec, Canada
| | - Audrey St-Yves
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, Qubec, Canada
| | - Raj Duggavathi
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, Qubec, Canada
| |
Collapse
|
7
|
Melo TP, Fortes MRS, Bresolin T, Mota LFM, Albuquerque LG, Carvalheiro R. Multitrait meta-analysis identified genomic regions associated with sexual precocity in tropical beef cattle. J Anim Sci 2018; 96:4087-4099. [PMID: 30053002 DOI: 10.1093/jas/sky289] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/20/2018] [Indexed: 12/31/2022] Open
Abstract
Multitrait meta-analyses are a strategy to produce more accurate genome-wide association studies, especially for complex phenotypes. We carried out a meta-analysis study for traits related to sexual precocity in tropical beef cattle (Nellore and Brahman) aiming to identify important genomic regions affecting these traits. The traits included in the analyses were age at first calving (AFC), early pregnancy (EP), age at first corpus luteum (AGECL), first postpartum anoestrus interval (PPAI), and scrotal circumference (SC). The traits AFC, EP, and SCN were measured in Nellore cattle, while AGECL, PPAI, and SCB were measured in Brahman cattle. Meta-analysis resulted in 108 significant single-nucleotide polymorphisms (SNPs), at an empirical threshold P-value of 1.39 × 10-5 (false discovery rate [FDR] < 0.05). Within 0.5 Mb of the significant SNP, candidate genes were annotated and analyzed for functional enrichment. Most of the closest genes to the SNP with higher significance in each chromosome have been associated with important roles in reproductive function. They are TSC22D2, KLF7, ARHGAP29, 7SK, MAP3K5, TLE3, WDR5, TAF3, TMEM68, PPP1R15B, NR2F2, GALR1, SUFU, and KCNU1. We did not observe any significant SNP in BTA5, BTA12, BTA17, BTA18, BTA19, BTA20, BTA22, BTA23, BTA25, and BTA28. Although the majority of significant SNPs are in BTA14, it was identified significant associations in multiple chromosomes (19 out of 29 autosomes), which is consistent with the postulation that reproductive traits are complex polygenic phenotypes. Five proposed association regions harbor the majority of the significant SNP (76%) and were distributed over four chromosomes (P < 1.39 × 10-5, FDR < 0.05): BTA2 (5.55%) from 95 to 96 Mb, BTA4 (5.55%) from 94.1 to 94.8 Mb, BTA14 (59.26%) from 24 to 25 Mb and 29 to 30 Mb, and BTA21 (5.55%) from 6.7 Mb to 11.4 Mb. These regions harbored key genes related to reproductive function. Moreover, these genes were enriched for functional groups associated with immune response, maternal-fetal tolerance, pregnancy maintenance, embryo development, fertility, and response to stress. Further studies including other breeds and precocity traits could confirm the importance of these regions and identify new candidate regions for sexual precocity in beef cattle.
Collapse
Affiliation(s)
- Thaise P Melo
- Department of Animal Science, School of Agricultural and Veterinarian Sciences, FCAV/ UNESP - Sao Paulo State University, Jaboticabal, Sao Paulo, Brazil
| | - Marina R S Fortes
- The University of Queensland, School of Chemistry and Molecular Biosciences, St Lucia, Queensland, Australia.,The University of Queensland, Queensland Alliance for Agriculture and Food Innovation, St Lucia, Queensland, Australia
| | - Tiago Bresolin
- Department of Animal Science, School of Agricultural and Veterinarian Sciences, FCAV/ UNESP - Sao Paulo State University, Jaboticabal, Sao Paulo, Brazil
| | - Lucio F M Mota
- Department of Animal Science, School of Agricultural and Veterinarian Sciences, FCAV/ UNESP - Sao Paulo State University, Jaboticabal, Sao Paulo, Brazil
| | - Lucia G Albuquerque
- Department of Animal Science, School of Agricultural and Veterinarian Sciences, FCAV/ UNESP - Sao Paulo State University, Jaboticabal, Sao Paulo, Brazil.,National Council for Scientific and Technological Development (CNPq), Brasília, Distrito Federal, Brazil
| | - Roberto Carvalheiro
- Department of Animal Science, School of Agricultural and Veterinarian Sciences, FCAV/ UNESP - Sao Paulo State University, Jaboticabal, Sao Paulo, Brazil.,National Council for Scientific and Technological Development (CNPq), Brasília, Distrito Federal, Brazil
| |
Collapse
|