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Moorey SE, Monnig JM, Smith MF, Ortega MS, Green JA, Pohler KG, Bridges GA, Behura SK, Geary TW. Differential Transcript Profiles in Cumulus-Oocyte Complexes Originating from Pre-Ovulatory Follicles of Varied Physiological Maturity in Beef Cows. Genes (Basel) 2021; 12:genes12060893. [PMID: 34200628 PMCID: PMC8227736 DOI: 10.3390/genes12060893] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/27/2021] [Accepted: 05/27/2021] [Indexed: 12/13/2022] Open
Abstract
Small dominant follicle diameter at induced ovulation, but not at spontaneous ovulation, decreased pregnancy rate, fertilization rate, and day seven embryo quality in beef cows. We hypothesized that the physiological status of the follicle at GnRH-induced ovulation has a direct effect on the transcriptome of the Cumulus-Oocyte complex, thereby affecting oocyte competence and subsequent embryo development. The objective of this study was to determine if the transcriptome of oocytes and associated cumulus cells (CC) differed among small (≤11.7 mm) and large follicles (≥12.7 mm) exposed to a GnRH-induced gonadotropin surge and follicles (11.7–14.0 mm) exposed to an endogenous gonadotropin surge (spontaneous follicles). RNA sequencing data, from pools of four oocytes or their corresponding CC, revealed 69, 94, and 83 differentially expressed gene transcripts (DEG) among oocyte pools from small versus large, small versus spontaneous, and large versus spontaneous follicle classifications, respectively. An additional 128, 98, and 80 DEG were identified among small versus large, small versus spontaneous, and large versus spontaneous follicle CC pools, respectively. The biological pathway “oxidative phosphorylation” was significantly enriched with DEG from small versus spontaneous follicle oocyte pools (FDR < 0.01); whereas the glycolytic pathway was significantly enriched with DEG from CC pools obtained from large versus small follicles (FDR < 0.01). These findings collectively suggest that altered carbohydrate metabolism within the Cumulus-Oocyte complex likely contributes to the decreased competency of oocytes from small pre-ovulatory follicles exposed to an exogenous GnRH-induced gonadotropin surge.
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Affiliation(s)
- Sarah E. Moorey
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
- Correspondence:
| | - Jenna M. Monnig
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Michael F. Smith
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - M. Sofia Ortega
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Jonathan A. Green
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Ky G. Pohler
- Department of Animal Science, Texas A&M University, College Station, TX 77843, USA;
| | - G. Alan Bridges
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108, USA;
| | - Susanta K. Behura
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA; (J.M.M.); (M.F.S.); (M.S.O.); (J.A.G.); (S.K.B.)
| | - Thomas W. Geary
- USDA-ARS Fort Keogh Livestock and Range Research Lab, Miles City, MT 59301, USA;
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Zou X, Lu T, Zhao Z, Liu G, Lian Z, Guo Y, Sun B, Liu D, Li Y. Comprehensive analysis of mRNAs and miRNAs in the ovarian follicles of uniparous and multiple goats at estrus phase. BMC Genomics 2020; 21:267. [PMID: 32228439 PMCID: PMC7106838 DOI: 10.1186/s12864-020-6671-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 03/13/2020] [Indexed: 12/13/2022] Open
Abstract
Background Fertility is an important economic trait in the production of meat goat, and follicular development plays an important role in fertility. Although many mRNAs and microRNAs (miRNAs) have been found to play critical roles in ovarian biological processes, the interaction between mRNAs and miRNAs in follicular development is not yet completely understood. In addition, less attention has been given to the study of single follicle (dominant or atretic follicle) in goats. This study aimed to identify mRNAs, miRNAs, and signaling pathways as well as their interaction networks in the ovarian follicles (large follicles and small follicles) of uniparous and multiple Chuanzhong black goats at estrus phase using RNA-sequencing (RNA-seq) technique. Results The results showed that there was a significant difference in the number of large follicles between uniparous and multiple goats (P < 0.05), but no difference in the number of small follicles was observed (P > 0.05). For the small follicles of uniparous and multiple goats at estrus phase, 289 differentially expressed mRNAs (DEmRNAs) and 16 DEmiRNAs were identified; and for the large follicles, 195 DEmRNAs and 7 DEmiRNAs were identified. The functional enrichment analysis showed that DE genes in small follicles were significantly enriched in ovarian steroidogenesis and steroid hormone biosynthesis, while in large follicles were significantly enriched in ABC transporters and steroid hormone biosynthesis. The results of quantitative real-time polymerase chain reaction were consistent with those of RNA-seq. Analysis of the mRNA-miRNA interaction network suggested that CD36 (miR-122, miR-200a, miR-141), TNFAIP6 (miR-141, miR-200a, miR-182), CYP11A1 (miR-122), SERPINA5 (miR-1, miR-206, miR-133a-3p, miR-133b), and PTGFR (miR-182, miR-122) might be related to fertility, but requires further research on follicular somatic cells. Conclusions This study was used for the first time to reveal the DEmRNAs and DEmiRNAs as well as their interaction in the follicles of uniparous and multiple goats at estrus phase using RNA-seq technology. Our findings provide new clues to uncover the molecular mechanisms and signaling networks of goat reproduction that could be potentially used to increase ovulation rate and kidding rate in goat.
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Affiliation(s)
- Xian Zou
- College of Animal Science, South China Agricultural University, Wushan Rd., Tianhe Dist, Guangzhou, 510642, Guangdong Province, China.,State Key Laboratory of Livestock and Poultry Breeding, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangdong Public Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Tingting Lu
- College of Animal Science, South China Agricultural University, Wushan Rd., Tianhe Dist, Guangzhou, 510642, Guangdong Province, China
| | - Zhifeng Zhao
- College of Animal Science, South China Agricultural University, Wushan Rd., Tianhe Dist, Guangzhou, 510642, Guangdong Province, China
| | - Guangbin Liu
- College of Animal Science, South China Agricultural University, Wushan Rd., Tianhe Dist, Guangzhou, 510642, Guangdong Province, China
| | - Zhiquan Lian
- College of Animal Science, South China Agricultural University, Wushan Rd., Tianhe Dist, Guangzhou, 510642, Guangdong Province, China
| | - Yongqing Guo
- College of Animal Science, South China Agricultural University, Wushan Rd., Tianhe Dist, Guangzhou, 510642, Guangdong Province, China
| | - Baoli Sun
- College of Animal Science, South China Agricultural University, Wushan Rd., Tianhe Dist, Guangzhou, 510642, Guangdong Province, China
| | - Dewu Liu
- College of Animal Science, South China Agricultural University, Wushan Rd., Tianhe Dist, Guangzhou, 510642, Guangdong Province, China
| | - Yaokun Li
- College of Animal Science, South China Agricultural University, Wushan Rd., Tianhe Dist, Guangzhou, 510642, Guangdong Province, China.
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Abstract
This manuscript describes the different topics I have been involved in the fields of reproductive
physiology and embryo biotechnologies with attempts to address practical issues raised
mainly by the breeding industry. The journey started with phenotyping work in the field of
reproductive physio-pathology. Other issues were related to the optimization of reproductive
biotechnologies to favorize genetic selection. The implementation of genomic selection
raised opportunities to develop the use embryo biotechnologies and showed the interest of
combining them in the case of embryo genotyping. There is still a need to refine phenotyping
for reproductive traits especially for the identification of markers of uterine dysfunction.
It is believed that new knowledge generated by combining different molecular approaches
will be the source of applications that may benefit AI practice and embryo technologies.
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Affiliation(s)
- Patrice Humblot
- Division of Reproduction, Department of Clinical Sciences, SLU, Uppsala, Sweden
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