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Yang Y, Feng W, Zhou J, Zhang R, Lin X, Sooranna SR, Deng Y, Shi D. Epigenetic modifications of gonadotropin receptors can regulate follicular development. Anim Reprod Sci 2024; 268:107534. [PMID: 39047429 DOI: 10.1016/j.anireprosci.2024.107534] [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: 01/16/2024] [Revised: 05/14/2024] [Accepted: 06/11/2024] [Indexed: 07/27/2024]
Abstract
The spatiotemporal transcription of follicle-stimulating hormone receptor (FSHR) and luteinizing hormone/human chorionic gonadotropin receptor (LHCGR) are crucial events for follicular development. However, their regulatory mechanisms are unclear. DNA methylation and histone acetylation are the main epigenetic modifications, and play important roles in transcriptional expression, which regulate cell responses including cell proliferation, senescence and apoptosis. This review will discuss the dynamic epigenetic modifications of FSHR and LHCGR that occur during the process of follicular development and their response to gonadotropins. In addition, some alteration patterns that occur during these epigenetic modifications, as well as their retrospect retrotransposons, which regulate the gene expression levels of FSHR and LHCGR will be discussed.
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Affiliation(s)
- Yanyan Yang
- Guangxi Key Laboratory of Animal Breeding and Disease Control, College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Wanyou Feng
- School of Environmental and Life Sciences, Nanning Normal University, Nanning 530023, China
| | - Jinhua Zhou
- Guangxi Key Laboratory of Animal Breeding and Disease Control, College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Ruimen Zhang
- Guangxi Key Laboratory of Animal Breeding and Disease Control, College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Xinyue Lin
- Guangxi Key Laboratory of Animal Breeding and Disease Control, College of Animal Science and Technology, Guangxi University, Nanning 530004, China
| | - Suren Rao Sooranna
- Department of Metabolism, Digestion and Reproduction, Imperial College London, Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom
| | - Yanfei Deng
- Guangxi Key Laboratory of Animal Breeding and Disease Control, College of Animal Science and Technology, Guangxi University, Nanning 530004, China.
| | - Deshun Shi
- Guangxi Key Laboratory of Animal Breeding and Disease Control, College of Animal Science and Technology, Guangxi University, Nanning 530004, China.
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Ghafouri F, Sadeghi M, Bahrami A, Naserkheil M, Dehghanian Reyhan V, Javanmard A, Miraei-Ashtiani SR, Ghahremani S, Barkema HW, Abdollahi-Arpanahi R, Kastelic JP. Construction of a circRNA- lincRNA-lncRNA-miRNA-mRNA ceRNA regulatory network identifies genes and pathways linked to goat fertility. Front Genet 2023; 14:1195480. [PMID: 37547465 PMCID: PMC10400778 DOI: 10.3389/fgene.2023.1195480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 07/03/2023] [Indexed: 08/08/2023] Open
Abstract
Background: There is growing interest in the genetic improvement of fertility traits in female goats. With high-throughput genotyping, single-cell RNA sequencing (scRNA-seq) is a powerful tool for measuring gene expression profiles. The primary objective was to investigate comparative transcriptome profiling of granulosa cells (GCs) of high- and low-fertility goats, using scRNA-seq. Methods: Thirty samples from Ji'ning Gray goats (n = 15 for high fertility and n = 15 for low fertility) were retrieved from publicly available scRNA-seq data. Functional enrichment analysis and a literature mining approach were applied to explore modules and hub genes related to fertility. Then, interactions between types of RNAs identified were predicted, and the ceRNA regulatory network was constructed by integrating these interactions with other gene regulatory networks (GRNs). Results and discussion: Comparative transcriptomics-related analyses identified 150 differentially expressed genes (DEGs) between high- and low-fertility groups, based on the fold change (≥5 and ≤-5) and false discovery rate (FDR <0.05). Among these genes, 80 were upregulated and 70 were downregulated. In addition, 81 mRNAs, 58 circRNAs, 8 lincRNAs, 19 lncRNAs, and 55 miRNAs were identified by literature mining. Furthermore, we identified 18 hub genes (SMAD1, SMAD2, SMAD3, SMAD4, TIMP1, ERBB2, BMP15, TGFB1, MAPK3, CTNNB1, BMPR2, AMHR2, TGFBR2, BMP4, ESR1, BMPR1B, AR, and TGFB2) involved in goat fertility. Identified biological networks and modules were mainly associated with ovary signature pathways. In addition, KEGG enrichment analysis identified regulating pluripotency of stem cells, cytokine-cytokine receptor interactions, ovarian steroidogenesis, oocyte meiosis, progesterone-mediated oocyte maturation, parathyroid and growth hormone synthesis, cortisol synthesis and secretion, and signaling pathways for prolactin, TGF-beta, Hippo, MAPK, PI3K-Akt, and FoxO. Functional annotation of identified DEGs implicated important biological pathways. These findings provided insights into the genetic basis of fertility in female goats and are an impetus to elucidate molecular ceRNA regulatory networks and functions of DEGs underlying ovarian follicular development.
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Affiliation(s)
- Farzad Ghafouri
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Mostafa Sadeghi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Abolfazl Bahrami
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
- Biomedical Center for Systems Biology Science Munich, Ludwig-Maximilians-University, Munich, Germany
| | - Masoumeh Naserkheil
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
- Animal Breeding and Genetics Division, National Institute of Animal Science, Cheonan-si, Republic of Korea
| | - Vahid Dehghanian Reyhan
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Arash Javanmard
- Department of Animal Sciences, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Seyed Reza Miraei-Ashtiani
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Soheila Ghahremani
- Department of Animal Science, Faculty of Agriculture, University of Tarbiat Modares, Tehran, Iran
| | - Herman W. Barkema
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
| | - Rostam Abdollahi-Arpanahi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - John P. Kastelic
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
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Praxedes ECG, Bezerra LGP, Luz NRN, da Silva AM, Pereira AF, Silva AR. In vitro culture of red-rumped agouti preantral follicles enclosed in fresh and vitrified ovarian tissues using TCM199 plus different pFSH concentrations. Anim Reprod 2023; 20:e20220113. [PMID: 37416866 PMCID: PMC10321683 DOI: 10.1590/1984-3143-ar2022-0113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 04/27/2023] [Indexed: 07/08/2023] Open
Abstract
Considering the relevance of establishing biodiversity conservation tools, the study aimed to investigate the TCM199 supplemented with different follicle-stimulating hormone (FSH) concentrations on survival and development of fresh and vitrified preantral follicles enclosed in red-rumped agouti ovarian tissues cultured in vitro. In the first experiment, six pairs of ovaries were fragmented and cultured for 6 days according to groups: 10 ng/mL pFSH (FSH10 group) and 50 ng/mL (FSH50 group). Non-cultured tissues were considered as a control. In the second experiment, vitrified/warmed fragments of four pairs of ovaries were cultured with the best concentration of FSH established (cryopreserved and cultured group). Non-cryopreserved (fresh control group) and cryopreserved but non-cultured (non-cultured group) tissues were used as controls. For both experiments, preantral follicles were evaluated for survival and development using morphological and viability analysis by trypan blue staining. After culturing fresh samples, FSH50 showed a higher percentage of morphologically normal follicles when compared to FSH10 (P < 0.05). This same response was observed for primordial follicles. Regardless of the concentrations of FSH used during in vitro culture, no difference was observed regarding the percentage of viable follicles and diameters (P > 0.05). Thus, the FSH50 group was used for second experiment, in which 76.2 ± 7.2% normal preantral follicles previously vitrified was found after 6-day culture, also presenting the highest values (P < 0.05) for morphology of primordial follicles (95.2 ± 4.7%). Nevertheless, in vitro culture did not affect the viability and diameter of preantral follicles of cryopreserved tissues (P > 0.05). In conclusion, TCM199 supplemented with 50 ng/mL FSH was efficient in maintaining the in vitro survival of fresh and vitrified red-rumped agouti preantral follicles. This was the first study related to the in vitro culture of ovarian preantral follicles in this species, aiming to contribute to its conservation.
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Affiliation(s)
| | | | - Náyra Rachel Nascimento Luz
- Laboratório de Conservação de Germoplasma Animal, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brasil
| | - Andréia Maria da Silva
- Laboratório de Conservação de Germoplasma Animal, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brasil
| | | | - Alexandre Rodrigues Silva
- Laboratório de Conservação de Germoplasma Animal, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brasil
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Nascimento DR, Barbalho EC, Gondim Barrozo L, de Assis EIT, Costa FC, Silva JRV. The mechanisms that control the preantral to early antral follicle transition and the strategies to have efficient culture systems to promote their growth in vitro. ZYGOTE 2023:1-11. [PMID: 37221099 DOI: 10.1017/s0967199423000254] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Preantral to early antral follicles transition is a complex process regulated by endocrine and paracrine factors, as well as by a precise interaction among oocyte, granulosa cells and theca cells. Understanding the mechanisms that regulate this step of folliculogenesis is important to improve in vitro culture systems, and opens new perspectives to use oocytes from preantral follicles for assisted reproductive technologies. Therefore, this review aims to discuss the endocrine and paracrine mechanisms that control granulosa cell proliferation and differentiation, formation of the antral cavity, estradiol production, atresia, and follicular fluid production during the transition from preantral to early antral follicles. The strategies that promote in vitro growth of preantral follicles are also discussed.
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Affiliation(s)
- D R Nascimento
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - E C Barbalho
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - L Gondim Barrozo
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - E I T de Assis
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - F C Costa
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - J R V Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceará, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
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Liu W, Chen Z, Li R, Zheng M, Pang X, Wen A, Yang B, Wang S. High and low dose of luzindole or 4-phenyl-2-propionamidotetralin (4-P-PDOT) reverse bovine granulosa cell response to melatonin. PeerJ 2023; 11:e14612. [PMID: 36684672 PMCID: PMC9851050 DOI: 10.7717/peerj.14612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 11/30/2022] [Indexed: 01/18/2023] Open
Abstract
Background Communication between oocytes and granulosa cells ultimately dictate follicle development or atresia. Melatonin is also involved in follicle development. This study aimed to investigate the effects of melatonin and its receptor antagonists on hormone secretion, as well as gene expression related to hormone synthesis, TGF-β superfamily, and follicle development in bovine granulosa cells, and assess the effects of melatonin in the presence of 4-P-PDOT and luzindole. Methods Bovine ovaries were collected from a local abattoir and follicular fluid (follicle diameter 5-8 mm) was collected for granulosa cell isolation and culture. Granulosa cells and culture medium were collected 48 h after treatment with melatonin at high dose concentrations (10-5 M) and low dose concentrations (10-9 M) in the absence/presence of 4-P-PDOT and luzindole (10-5 M or 10-9 M). Furthermore, the expression level of genes related to hormonal synthesis (CYP11A1, CYP19A1, StAR, and RUNX2), TGF-β superfamily (BMP6, INHA, INHBA, INHBB, and TGFBR3), and development (EGFR, DNMT1A, and FSHR) were detected in each experimental group by real-time quantitative PCR. In addition, the level of hormones in culture medium were detected using ELISA. Results Both 10-5 M and 10-9 M melatonin doses promoted the secretion of inhibin A and progesterone without affecting the production of inhibin B and estradiol. In addition, both promoted the gene expression of INHA, StAR, RUNX2, TGFBR3, EGFR, and DNMT1A, and inhibited the expression of BMP6, INHBB, CYP11A1, CYP19A1, and FSHR. When combined with different doses of 4-P-PDOT and luzindole, they exhibited different effects on the secretion of inhibin B, estradiol, inhibin A, and progesterone, and the expression of CYP19A1, RUNX2, BMP6, INHBB, EGFR, and DNMT1A induced by melatonin. Conclusion High and low dose melatonin receptor antagonists exhibited different effects in regulating hormone secretion and the expression of various genes in response to melatonin. Therefore, concentration effects must be considered when using luzindole or 4-P-PDOT.
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Affiliation(s)
- Wenju Liu
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, China,Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Zhihao Chen
- College of Animal Science, Anhui Science and Technology University, Fengyang, China
| | - Rui Li
- College of Animal Science, Anhui Science and Technology University, Fengyang, China
| | - Menghao Zheng
- College of Animal Science, Anhui Science and Technology University, Fengyang, China
| | - Xunsheng Pang
- College of Animal Science, Anhui Science and Technology University, Fengyang, China
| | - Aiyou Wen
- College of Animal Science, Anhui Science and Technology University, Fengyang, China
| | - Bing Yang
- College of Animal Science, Anhui Science and Technology University, Fengyang, China
| | - Shujuan Wang
- College of Animal Science, Anhui Science and Technology University, Fengyang, China,Anhui Province Key Laboratory of Animal Nutritional Regulation and Health, Fengyang, China
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Differential expression of FSHR and LHR genes and proteins during development of rabbit ovarian follicles. ZYGOTE 2022; 30:577-583. [DOI: 10.1017/s0967199421000861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Summary
The development of an ovarian follicle is a complex process at the cellular and molecular level that is mainly regulated by follicle-stimulating hormone receptor (FSHR) and luteinizing hormone receptor (LHR). To elucidate the contribution of these receptors to ovarian follicle development, it is necessary to determine their expression profiles during this biological process. Therefore, this study aimed to investigate the relationship between ovarian development pattern and the differential ovarian expression pattern of FSHR and LHR genes as well as proteins at different developmental stages. Ovaries were collected from 30 New Zealand rabbits at day 0 (birth), week 2 (neonate), week 4 (cub), week 16 (maturity), and day 18 pregnancy. Ovarian histology, and gene as well as protein expression were determined using light microscopy, real-time PCR and western blotting, respectively. The results showed that the expression levels of FSHR mRNA and protein increased coincidently with age and the growth of ovarian follicles. The levels of LHR mRNA and protein remained low from the day of birth until week 4 and became significantly higher by week 16 coinciding with appearance of growing and antral follicles, which have a defined thecal layer. FSHR gene and protein expression decreased with pregnancy, whereas LHR increased, reaching a peak level during pregnancy. It can be concluded that changes in FSHR and LHR gene and protein expression could be related to the growth and development of follicles, indicating the regulatory role for these receptors in rabbit folliculogenesis.
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Equine Chorionic Gonadotropin as an Effective FSH Replacement for In Vitro Ovine Follicle and Oocyte Development. Int J Mol Sci 2021; 22:ijms222212422. [PMID: 34830304 PMCID: PMC8619287 DOI: 10.3390/ijms222212422] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/15/2021] [Accepted: 11/15/2021] [Indexed: 11/19/2022] Open
Abstract
The use of assisted reproductive technologies (ART) still requires strategies through which to maximize individual fertility chances. In vitro folliculogenesis (ivF) may represent a valid option to convey the large source of immature oocytes in ART. Several efforts have been made to set up ivF cultural protocols in medium-sized mammals, starting with the identification of the most suitable gonadotropic stimulus. In this study, Equine Chorionic Gonadotropin (eCG) is proposed as an alternative to Follicle Stimulating Hormone (FSH) based on its long superovulation use, trans-species validation, long half-life, and low costs. The use of 3D ivF on single-ovine preantral (PA) follicles allowed us to compare the hormonal effects and to validate their influence under two different cultural conditions. The use of eCG helped to stimulate the in vitro growth of ovine PA follicles by maximizing its influence under FBS-free medium. Higher performance of follicular growth, antrum formation, steroidogenic activity and gap junction marker expression were recorded. In addition, eCG, promoted a positive effect on the germinal compartment, leading to a higher incidence of meiotic competent oocytes. These findings should help to widen the use of eCG to ivF as a valid and largely available hormonal support enabling a synchronized in vitro follicle and oocyte development.
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Kumar S, Punetha M, Jose B, Bharati J, Khanna S, Sonwane A, Green JA, Whitworth K, Sarkar M. Modulation of granulosa cell function via CRISPR-Cas fuelled editing of BMPR-IB gene in goats (Capra hircus). Sci Rep 2020; 10:20446. [PMID: 33235250 PMCID: PMC7686318 DOI: 10.1038/s41598-020-77596-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 10/13/2020] [Indexed: 12/20/2022] Open
Abstract
BMPs are multifunctional growth factors implicated in regulating the ovarian function as key intra-ovarian factors. Biological effects of BMPs are mediated through binding with membrane bound receptors like BMPR-IB and initiating downstream Smad signaling pathway. FecB mutation, regarded as a loss of function mutation in the BMPR-IB gene was identified in certain sheep breeds having high fecundity. Similar type of fecundity genes in goats have not been discovered so far. Hence, the current study was designed to investigate the effects of BMPR-IB gene modulation on granulosa cell function in goats. The BMPR-IB gene was knocked out using CRISPR-Cas technology in granulosa cells and cultured in vitro with BMP-4 stimulation for three different durations In addition, the FecB mutation was introduced in the BMPR-IB gene applying Easi-CRISPR followed by BMP-4/7 stimulation for 72 h. Steroidogenesis and cell viability were studied to explore the granulosa cell function on BMPR-IB gene modulation. BMPRs were found to be expressed stage specifically in granulosa cells of goats. Higher transcriptional abundance of R-Smads, LHR and FSHR indicating sensitisation of Smad signaling and increased gonadotropin sensitivity along with a significant reduction in the cell proliferation and viability was observed in granulosa cells upon BMPR-IB modulation. The inhibitory action of BMP-4/7 on P4 secretion was abolished in both KO and KI cells. Altogether, the study has revealed an altered Smad signaling, steroidogenesis and cell viability upon modulation of BMPR-IB gene in granulosa cells similar to that are documented in sheep breeds carrying the FecB mutation.
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Affiliation(s)
- Sai Kumar
- Physiology and Climatology Division, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
| | - Meeti Punetha
- Physiology and Climatology Division, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
| | - Bosco Jose
- Physiology and Climatology Division, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
| | - Jaya Bharati
- Physiology and Climatology Division, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
| | - Shivani Khanna
- Physiology and Climatology Division, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
| | - Arvind Sonwane
- Division of Animal Genetics, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
| | - Jonathan A Green
- Division of Animal Science, University of Missouri-Columbia, Columbia, MO, USA
| | - Kristin Whitworth
- Division of Animal Science, University of Missouri-Columbia, Columbia, MO, USA
| | - Mihir Sarkar
- Physiology and Climatology Division, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India.
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Wang X, Wang L, Sun Y, Wu D, Li J, Zhu L, Jiang S, Pan X. The optimized research of the in vitro culture of preantral follicles in mice. J Clin Lab Anal 2020; 34:e23498. [PMID: 33463764 PMCID: PMC7676217 DOI: 10.1002/jcla.23498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/06/2020] [Accepted: 07/12/2020] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE Efficiency of preantral follicle culture in vitro is low and is dependent on species, development stage, and follicle-stimulating hormone (FSH) concentration. Here, we optimized the preantral follicle in vitro culture system in mice. METHODS The primary follicles (PM follicles, 80-100 μm diameter ) and early secondary follicles (ES follicles, 110-130 μm diameter) isolated from 14-day female mice were cultured in mediums containing 10 mIU/mL or 100 mIU/mL r-FSH. The follicle growth and oocyte maturation were observed. Estradiol (E2) was detected by ELISA. FSH receptor (FSHR), Ki-67, 3β-HSD, CYP17, and CYP19 levels were detected by immunofluorescence and Western blot. RESULTS The antrum formation and oocyte maturation rates of ES follicles were significantly higher than those of PM follicles (P < .05). They were also significantly higher in ES follicles with 100 mIU/mL r-FSH than with 10 mIU/mL r-FSH (P < .05). A higher FSHR level was found in ES follicles. Meanwhile, with 10 mIU/mL r-FSH, the ES follicles exhibited a pattern of flat growth, whereas a pattern of stereoscopic spatial growth was observed with 100 mIU/mL r-FSH. The 100 mIU/mL r-FSH stimulated granulosa cell proliferation more significantly than 10 mIU/mL r-FSH. Moreover, FSH significantly promoted ES follicle granulosa cell proliferation compared to PM follicular granulosa cells. The secretion of E2 and the expressions of 3β-HSD, CYP 17, and CYP 19 in ES follicles with 100 mIU/mL r-FSH were significantly higher than those with 10 mIU/mL r-FSH. CONCLUSIONS The 100 mIU/mL r-FSH ideally promotes the development of ES follicles, whose growth pattern can more reasonably simulate the growth of follicles in vivo.
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Affiliation(s)
- Xiyan Wang
- Center for Reproductive MedicineJilin Medical UniversityJilinChina
| | - Liguo Wang
- Department of UrologyAffiliated Hospital of Jilin Medical UniversityJilinChina
| | - Yanmei Sun
- Center for Reproductive MedicineJilin Medical UniversityJilinChina
| | - Di Wu
- Center for Reproductive MedicineJilin Medical UniversityJilinChina
| | - Jiao Li
- Center for Reproductive MedicineJilin Medical UniversityJilinChina
| | - Lin Zhu
- Center for Reproductive MedicineJilin Medical UniversityJilinChina
| | - Shiwen Jiang
- Center for Reproductive MedicineWuxi Maternity and Child Health Care Hospital Affiliated to Nanjing Medical UniversityWuxiChina
| | - Xiaoyan Pan
- Center for Reproductive MedicineJilin Medical UniversityJilinChina
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de Figueiredo JR, Cadenas J, de Lima LF, Santos RR. Advances in in vitro folliculogenesis in domestic ruminants. Anim Reprod 2020; 16:52-65. [PMID: 33936289 PMCID: PMC8083813 DOI: 10.21451/1984-3143-ar2018-123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 02/18/2019] [Indexed: 01/27/2023] Open
Abstract
The in vitro follicle culture (IVFC) represents an outstanding tool to enhance our understanding of the control of folliculogenesis and to allow the future use of a large number of immature oocytes enclosed in preantral follicles (PFs) in assisted reproductive techniques in humans as well as in others mammalian species including the ruminants. So far, the best results of IVFC were reported from mice with the production of live offspring from primordial follicles cultured in vitro. Live birth has been obtained after the in vitro culture of bovine early antral follicles. However, in other ruminant species, these results have been limited to the production of a variable number of mature oocytes and low percentages of embryos after in vitro culture of goat, buffalo and sheep isolated secondary preantral follicles. The present review presents and discusses the main findings, limitations, and prospects of in vitro folliculogenesis in ruminants focusing on bovine, caprine, and ovine species.
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Affiliation(s)
- José Ricardo de Figueiredo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceara, Fortaleza CE, Brazil
| | - Jesús Cadenas
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceara, Fortaleza CE, Brazil
| | - Laritza Ferreira de Lima
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceara, Fortaleza CE, Brazil
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Lopes EPF, Rodrigues GQ, de Brito DCC, Rocha RMP, Ferreira ACA, de Sá NAR, Silva RFD, de Alcântara GLH, Alves BG, Figueiredo JRD, Zelinski M, Rodrigues APR. Vitrification of caprine secondary and early antral follicles as a perspective to preserve fertility function. Reprod Biol 2020; 20:371-378. [PMID: 32418820 DOI: 10.1016/j.repbio.2020.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/28/2020] [Accepted: 05/03/2020] [Indexed: 01/09/2023]
Abstract
The present study aimed to evaluate the structure, survival and development of isolated caprine (secondary-SEC and early antral-EANT) follicles, after vitrification in the presence of synthetic polymers and in vitro culture. Additionally, transzonal projections (TZPs) and p450 aromatase enzyme were evaluated. After isolation, SEC and EANT follicles were in vitro cultured for six days or vitrified. After one week, SEC and EANT follicles were warmed and also in vitro cultured for six days. Data revealed that the percentage of morphologically normal follicles was similar between fresh and vitrified follicles in both follicular categories and antrum formation rate was similar between fresh and vitrified SEC follicles. Fluorescence by calcein-AM did not show difference between fresh and vitrified (SEC and EANT) follicles, however, the trypan blue test showed low viability for vitrified follicles. The integrity of TZPs was not affected between fresh and vitrified SEC follicles, however, in vitrified EANT follicles, there were signs of TZPs loss. Regarding steroidogenic function, it was observed a positive staining for p450 aromatase enzyme in fresh and vitrified SEC and EANT follicles. It was concluded that SEC follicles seem to be more resistant to vitrification than EANT follicles, as shown by the trypan blue test and TZPs assay. Future studies may confirm this hypothesis, in order to consolidate the use of SEC and EANT follicles as an alternative to ovary cryopreservation.
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Affiliation(s)
- Everton Pimentel Ferreira Lopes
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - Giovanna Quintino Rodrigues
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - Danielle Cristina Calado de Brito
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | | | - Anna Clara Accioly Ferreira
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - Naíza Arcângela Ribeiro de Sá
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - Renato Félix da Silva
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - Gabriel Las Heras de Alcântara
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | | | - José Ricardo de Figueiredo
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - Mary Zelinski
- Division of Reproductive and Developmental Sciences, Oregon National Primate Research Center, Beaverton, OR, USA
| | - Ana Paula Ribeiro Rodrigues
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil.
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12
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Ferreira ACA, Sá NAR, Cadenas J, Correia HHV, Guerreiro DD, Alves BG, Lima LF, Celestino JJH, Rodrigues APPR, Gastal EL, Figueiredo JR. Pituitary porcine FSH, and recombinant bovine and human FSH differentially affect growth and relative abundances of mRNA transcripts of preantral and early developing antral follicles in goats. Anim Reprod Sci 2020; 219:106461. [PMID: 32828391 DOI: 10.1016/j.anireprosci.2020.106461] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 04/02/2020] [Accepted: 04/03/2020] [Indexed: 01/09/2023]
Abstract
Three different sources of FSH (porcine pituitary, pFSH; recombinant bovine, rbFSH; and recombinant human, rhFSH) were compared during in vitro culture of preantral and early antral follicles of goats for 18 days. Treatments were: base medium supplemented with no FSH (control), 10, 50, or 100 mIU/mL pFSH (pFSH10, pFSH50, and pFSH100, respectively), 100 ng/mL rbFSH (rbFSH), and 50 mIU/mL rhFSH (rhFSH). There were evaluations of follicle morphology, antrum formation, growth rate, estradiol production, oocyte viability and chromatin configuration, and follicle wall relative abundance of mRNA transcript for MMP-9, TIMP-2, CYP17, CYP19A1, FSHR, Insulin-R, and BAX/BCL-2 ratio. Follicle degeneration rates were similar among all treatment groups at the end of culturing. When there were treatments with pFSH, however, there was a lesser (P < 0.05) percentage of intact follicles and estradiol production, and greater (P < 0.05) extrusion rates. Furthermore, with only pFSH10 (antral follicles) and pFSH100 (preantral and antral follicles) treatments, there was a lesser (P < 0.05) follicle growth. For preantral follicles, when there was addition of pFSH10, pFSH100, and rhFSH there was lesser (P < 0.05) oocyte meiotic resumption compared to control and rbFSH treatments. For antral follicles, when there were treatments with rhFSH and pFSH10 there was greater (P = 0.08 - P < 0.05) oocyte maturation. In conclusion, the source of FSH differentially affected gene expression, as indicated by mRNA abundances, and follicular dynamics of preantral and antral follicles in vitro. Addition of FSH during the in vitro culture improved the developmental outcomes only for antral follicles.
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Affiliation(s)
- Anna Clara A Ferreira
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - Naiza A R Sá
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - Jesús Cadenas
- Laboratory of Reproductive Biology, University Hospital of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Hudson H V Correia
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - Denise D Guerreiro
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - Benner G Alves
- Postgraduate Program in Animal Bioscience, Federal University of Goiás, Jataí, GO, Brazil
| | - Laritza F Lima
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - Juliana J H Celestino
- Institute of Health Sciences, University of International Integration of Afro-Brazilian Lusophony, Acarape, CE, Brazil
| | - Ana Paula P R Rodrigues
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - Eduardo L Gastal
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, IL, United States
| | - Jose R Figueiredo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil.
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13
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Quan Q, Zheng Q, Ling Y, Fang F, Chu M, Zhang X, Liu Y, Li W. Comparative analysis of differentially expressed genes between the ovaries from pregnant and nonpregnant goats using RNA-Seq. ACTA ACUST UNITED AC 2019; 26:3. [PMID: 31080783 PMCID: PMC6503366 DOI: 10.1186/s40709-019-0095-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 04/22/2019] [Indexed: 12/31/2022]
Abstract
Background A multitude of genes tightly regulate ovarian follicular development and hormone secretion. These complex and coordinated biological processes are altered during pregnancy. In order to further understand the regulatory role of these genes during pregnancy, it is important to screen the differentially expressed genes (DEGs) in the ovaries of pregnant and nonpregnant mammals. To detect the genes associated with the development of pregnancy in goats, DEGs from the ovaries from pregnant and nonpregnant Anhui white goats (pAWGs and nAWGs, respectively) were analyzed using RNA sequencing technology (RNA-Seq). Results In this study, 13,676,394 and 13,549,560 clean reads were generated from pAWGs and nAWGs, respectively, and 1724 DEGs were identified between the two libraries. Compared with nAWGs, 1033 genes were upregulated and 691 genes were downregulated in pAWGs, including PGR, PRLR, STAR and CYP19A1, which play important roles in goat reproduction. Gene Ontology analysis showed that the DEGs were enriched for 49 functional GO terms. Kyoto Encyclopedia of Genes and Genomes analysis revealed that 397 DEGs were significantly enriched in 13 pathways, including “cell cycle”, “cytokine–cytokine receptor interaction” and “steroid biosynthesis”, suggesting that the genes may be associated with cell cycle regulation, follicular development and hormone secretion to regulate the reproduction process. Additionally, quantitative real-time PCR was used to verify the reliability of the RNA-Seq data. Conclusions The data obtained in this work enrich the genetic resources of goat and provide a further understanding of the complex molecular regulatory mechanisms occurring during the development of pregnancy and reproduction in goats. The DEGs screened in this study may play an important role in follicular development and hormone secretion and they would provide scientific basis for related research in the future. Electronic supplementary material The online version of this article (10.1186/s40709-019-0095-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Qing Quan
- 1College of Animal Science and Technology, Anhui Agricultural University, Hefei, 230036 Anhui China.,3College of Economy and Technology, Anhui Agricultural University, Hefei, 230036 Anhui China
| | - Qi Zheng
- 1College of Animal Science and Technology, Anhui Agricultural University, Hefei, 230036 Anhui China.,Local Animal Genetic Resources Conservation and Biobreeding Laboratory of Anhui Province, Hefei, 230036 Anhui China
| | - Yinghui Ling
- 1College of Animal Science and Technology, Anhui Agricultural University, Hefei, 230036 Anhui China.,Local Animal Genetic Resources Conservation and Biobreeding Laboratory of Anhui Province, Hefei, 230036 Anhui China
| | - Fugui Fang
- 1College of Animal Science and Technology, Anhui Agricultural University, Hefei, 230036 Anhui China.,Local Animal Genetic Resources Conservation and Biobreeding Laboratory of Anhui Province, Hefei, 230036 Anhui China
| | - Mingxing Chu
- 4Key Laboratory of Farm Animal Genetic Resources and Germplasm Innovation of Ministry of Agriculture, CAAS, Beijing, 100193 China
| | - Xiaorong Zhang
- 1College of Animal Science and Technology, Anhui Agricultural University, Hefei, 230036 Anhui China.,Local Animal Genetic Resources Conservation and Biobreeding Laboratory of Anhui Province, Hefei, 230036 Anhui China
| | - Yong Liu
- 5Key Laboratory of Embryo Development and Reproductive Regulation of Anhui Province, Fuyang Normal University, Fuyang, Anhui 236037 China
| | - Wenyong Li
- 5Key Laboratory of Embryo Development and Reproductive Regulation of Anhui Province, Fuyang Normal University, Fuyang, Anhui 236037 China
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14
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Nagashima JB, Wildt DE, Travis AJ, Songsasen N. Activin promotes growth and antral cavity expansion in the dog ovarian follicle. Theriogenology 2019; 129:168-177. [PMID: 30856402 PMCID: PMC6445547 DOI: 10.1016/j.theriogenology.2019.02.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 01/29/2019] [Accepted: 02/21/2019] [Indexed: 01/16/2023]
Abstract
Understanding regulators of folliculogenesis remains limited in the domestic dog (Canis familiaris), which challenges our ability to develop in vitro follicle culture systems for canid genome rescue efforts. Here, we investigated the influence of activin on dog follicle development and survival, oocyte quality, and FSH receptor expression in culture. Preantral (150 - ≤230 μm diameter), early antral (231 - ≤330 μm), and antral (>330-550 μm) stage follicles were encapsulated in a fibrin-alginate hydrogel with 0, 100, or 200 ng/ml rhActivin plus 0, 0.1, 1, or 10 μg/ml FSH for 12 or 21 d of in vitro culture. All follicle groups increased in diameter (P < 0.05) with activin acting synergistically with FSH to improve (P < 0.05) growth and antral cavity expansion (to >630 μm) in early antral and antral cohorts. This complementary effect was not linked to changes in FSHR mRNA expression (P > 0.05). Although not influencing (P > 0.05) follicle survival or transzonal projection (TZP) density in shorter term 12 d culture, activin in the presence of 1 ng/ml FSH maintained TZP density from the 12-21 d interval. Activin also increased oocyte diameter and improved nuclear integrity compared to un-supplemented controls. These results indicate that activin acts synergistically with FSH to promote growth and antral cavity expansion of the dog follicle in vitro, information useful to formulating an effective culture microenvironment for this species.
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Affiliation(s)
- Jennifer B Nagashima
- Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA, 22630, USA; Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA.
| | - David E Wildt
- Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA, 22630, USA
| | - Alexander J Travis
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA; Atkinson Center for a Sustainable Future, Cornell University, Ithaca, NY, 14853, USA
| | - Nucharin Songsasen
- Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA, 22630, USA
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15
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Barros VRP, Monte APO, Lins TLBG, Santos JM, Menezes VG, Cavalcante AYP, Araújo VR, Gouveia BB, Matos MHT. In vitro survival, growth, and maturation of sheep oocytes from secondary follicles cultured in serum-free conditions: impact of a constant or a sequential medium containing recombinant human FSH. Domest Anim Endocrinol 2019; 67:71-79. [PMID: 30765293 DOI: 10.1016/j.domaniend.2018.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 12/07/2018] [Accepted: 12/12/2018] [Indexed: 12/16/2022]
Abstract
This study evaluated the in vitro development and maturation of ovine oocytes from secondary follicles cultured in serum-free medium containing fixed or sequential concentrations of recombinant human FSH (rhFSH). Follicles were cultured in α-MEM+ alone or with constant (500, 750, or 1,000 ng/mL) or sequential concentrations of rhFSH (seq. 1: day 6 = 500; day 12 = 750; day 18 = 1,000 ng/mL and seq. 2: day 6 = 100; day 12 = 500; day 18 = 1,000 ng/mL). At the end of the experiment, follicular survival was higher (P < 0.05) in 750 ng/mL rhFSH than the control and 1,000 ng/mL rhFSH. As early as day 6 of culture, antral cavity formation was observed in all treatments. Follicular diameter increased progressively and significantly in all treatments throughout 18 d of culture. Furthermore, addition of rhFSH to the medium promoted a significant increase in the percentage of fully grown oocytes in all treatments compared to α-MEM+. Mitochondrial activity was higher in rhFSH treatments than in the control, except in rhFSH seq. 2 (P < 0.05). Maturation rates increased in oocytes from intact follicles cultured in 750 ng/mL rhFSH compared to the control (P < 0.05). In conclusion, rhFSH at 750 ng/mL maintained the survival of secondary follicles cultured in serum-free medium, improved oocyte growth, mitochondrial activity, and oocyte maturation.
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Affiliation(s)
- V R P Barros
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - A P O Monte
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - T L B G Lins
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - J M Santos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - V G Menezes
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - A Y P Cavalcante
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - V R Araújo
- Health Center Science, State University of Ceará, 60714-903 Fortaleza, CE, Brazil
| | - B B Gouveia
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil
| | - M H T Matos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley, Petrolina, PE 56300-990, Brazil.
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16
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Baba T, Ting AY, Tkachenko O, Xu J, Stouffer RL. Direct actions of androgen, estrogen and anti-Müllerian hormone on primate secondary follicle development in the absence of FSH in vitro. Hum Reprod 2018; 32:2456-2464. [PMID: 29077845 DOI: 10.1093/humrep/dex322] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 10/03/2017] [Indexed: 11/14/2022] Open
Abstract
STUDY QUESTION What are effects of androgen, estrogen and anti-Müllerian hormone (AMH), independent of FSH action, on the development and function of primate follicles from the preantral to small antral stage in vitro? SUMMARY ANSWER Androgen and estrogen, but not AMH, promote follicle survival and growth in vitro, in the absence of FSH. However, their growth-promoting effects are limited to the preantral to early antral stage. WHAT IS KNOWN ALREADY FSH supports primate preantral follicle development in vitro. Androgen and estrogen augment follicle survival and growth in the presence of FSH during culture. STUDY DESIGN SIZE, DURATION Nonhuman primate model; randomized, control versus treatment groups. Rhesus macaque (n = 6) secondary follicles (n = 24 per animal per treatment group) were cultured for 5 weeks. PARTICIPANTS/MATERIALS, SETTING, METHODS Follicles were encapsulated in 0.25% (w/v) alginate and cultured individually in modified alpha minimum essential media with (i) FSH (1 ng/ml; control), (ii) no FSH, (iii) no FSH + estradiol (E2; 100 pg/ml)/dihydrotestosterone (DHT; 50 ng/ml) and (iv) no FSH + AMH (50 ng/ml). In a second experiment, follicles were cultured with (i) FSH (1 ng/ml), (ii) no FSH, (iii) no FSH + E2 (1 ng/ml), (iv) no FSH + DHT (50 ng/ml) and (v) no FSH + E2/DHT. Follicle survival, antrum formation and growth pattern were evaluated. Progesterone (P4), E2 and AMH concentrations in culture media were measured. MAIN RESULTS AND THE ROLE OF CHANCE In the first experiment, FSH deprivation significantly decreased (P < 0.05) follicle survival rates in the no FSH group (16 ± 5%), compared to CTRL (66 ± 9%). E2/DHT (49 ± 5%), but not AMH (27 ± 8%), restored follicle survival rate to the CTRL level. Similarly, antrum formation rates were higher (P < 0.05) in CTRL (56 ± 6%) and E2/DHT groups (54 ± 14%), compared to no FSH (0 ± 0%) and AMH (11 ± 11%) groups. However, follicle growth rate after antrum formation and follicle diameter at week 5 was reduced (P < 0.05) in the E2/DHT group (405 ± 25 μm), compared to CTRL (522 ± 29 μm). Indeed, the proportion of fast-grow follicles at week 5 was higher in CTRL (29% ± 5), compared to E2/DHT group (10 ± 3%). No fast-grow follicles were observed in no FSH and AMH groups. AMH levels at week 3 remained similar in all groups. However, media concentrations of P4 and E2 at week 5 were lower (P < 0.05, undetectable) in no FSH, E2/DHT and AMH groups, compared to CTRL (P4 = 93 ± 10 ng/ml; E2 = 4 ± 1 ng/ml). In the second experiment, FSH depletion diminished follicle survival rate (66 ± 8% in control versus 45 ± 9% in no FSH, P = 0.034). E2 plus DHT (31.5 ± 11%) or DHT alone (69 ± 9%) restored follicle survival rate to the control (FSH) level as expected. Also, E2 plus DHT or DHT alone improved antrum formation rate. However, in the absence of FSH, E2 plus DHT or DHT alone did not support growth, in terms of follicle diameter, or steroid (P4 or E2) production after the antral stage. LIMITATIONS REASONS FOR CAUTION This study is limited to in vitro effects of E2, DHT and AMH during the interval from the secondary to small antral stage of macaque follicular development. In addition, the primate follicle pool is heterogeneous and differs between animals; therefore, even though only secondary follicles were selected, follicle growth and developmental outcomes might differ from one animal to another. WIDER IMPLICATIONS OF THE FINDINGS This study provides novel information on the possible actions of estrogen and androgen during early follicular development in primates. Our results suggest that sequential exposure of preantral follicles to local factors, e.g. E2 and DHT, followed by gonadotropin once the follicle reaches the antral stage, may better mimic primate folliculogenesis in vivo. STUDY FUNDING/COMPETING INTEREST(S) Research reported in this publication was supported by the Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Center for Translational Research on Reproduction and Infertility 5P50HD071836, and the NIH Primate Centers Program 8P510D011092. There are no conflicts of interest.
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Affiliation(s)
- T Baba
- Division of Reproductive and Developmental Sciences, Oregon National Primate Research Center, 505 NW 185th Avenue, Beaverton, OR 97006, USA
- Department of Obstetrics and Gynecology, Sapporo Medical University, South 1 West 16, Sapporo, Hokkaido 060-8543 Japan
| | - A Y Ting
- Division of Reproductive and Developmental Sciences, Oregon National Primate Research Center, 505 NW 185th Avenue, Beaverton, OR 97006, USA
| | - O Tkachenko
- Division of Reproductive and Developmental Sciences, Oregon National Primate Research Center, 505 NW 185th Avenue, Beaverton, OR 97006, USA
| | - J Xu
- Division of Reproductive and Developmental Sciences, Oregon National Primate Research Center, 505 NW 185th Avenue, Beaverton, OR 97006, USA
- Department of Obstetrics and Gynecology, School of Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA
| | - R L Stouffer
- Division of Reproductive and Developmental Sciences, Oregon National Primate Research Center, 505 NW 185th Avenue, Beaverton, OR 97006, USA
- Department of Obstetrics and Gynecology, School of Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA
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17
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Abudureyimu A, Cai Y, Huo S, Ren R, Zang R, Yang J, Ma Z, Cui Y. Expression and localization of follicle-stimulating hormone receptor in the yak uterus during different stages of the oestrous cycle. Reprod Domest Anim 2018; 53:1539-1545. [PMID: 30120840 DOI: 10.1111/rda.13313] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 07/26/2018] [Indexed: 11/30/2022]
Abstract
Morphological changes of the uterus and alterations in its secretory activity under the influence of steroid hormones been well documented. The oestrous cycle is also associated with significant changes in plasma follicle-stimulating hormone (FSH), whose effects are mediated through its receptor (FSHR). Reports showed that in many mammals, FSHR was expressed in gonadal and extragonadal tissues including cervix, female reproductive tract, and pituitary gland. Follicle-stimulating hormone (FSH) signals through endothelial FSHR directly stimulate angiogenesis and involved in the timing of birth in human, and the presence of FSHR in the placenta is essential for normal pregnancy in mice. But little is known about FSHR expression in the yak uterus. The main objective of the present study was to determine the expression and localization of FSHR in the yak uterus during different phases of the oestrous cycle. Results showed that FSHR protein was localized in the surface and glandular epithelial cells, stroma cells, myometrial smooth muscle cells and blood vessel endothelial cells. The expression of FSHR protein peaked at oestrus, significantly decreased at dioestrus (p < 0.05) and increased again at proestrus. FSHR mRNA was highly expressed at both proestrus and oestrus, and decreased at metestrus with the lowest values at dioestrus (p < 0.05). In conclusion, FSHR expression in the yak uterus changed with the stage of the oestrous cycle suggesting that FSHR plays an essential role in regulating the endometrial and myometrial functions during the oestrus cycle in the yak.
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Affiliation(s)
- Ayimuguli Abudureyimu
- Life Science and Engineering College of Northwest University for Nationalities, Lanzhou, China.,College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Yong Cai
- Experimental Center of Northwest University for Nationalities, Lanzhou, China
| | - Shengdong Huo
- Life Science and Engineering College of Northwest University for Nationalities, Lanzhou, China
| | - Rui Ren
- Life Science and Engineering College of Northwest University for Nationalities, Lanzhou, China
| | - Rongxin Zang
- Life Science and Engineering College of Northwest University for Nationalities, Lanzhou, China
| | - Jutian Yang
- Life Science and Engineering College of Northwest University for Nationalities, Lanzhou, China
| | - Zhongren Ma
- Life Science and Engineering College of Northwest University for Nationalities, Lanzhou, China
| | - Yan Cui
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
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18
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Juengel JL, Smith PR, Quirke LD, French MC, Edwards SJ. The local regulation of folliculogenesis by members of the transforming growth factor superfamily and its relevance for advanced breeding programmes. Anim Reprod 2018; 15:180-190. [PMID: 34178140 PMCID: PMC8202455 DOI: 10.21451/1984-3143-ar2018-0055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Regulation of the growth and maturation of the ovarian follicle is critical for normal reproductive function. Alterations in this growth can lead to pathological conditions, such as cystic follicles, reduced oocyte quality, or an abnormal endocrine environment leading to poor fertility. Alterations in follicular growth also influence the number of follicles ovulating and thus can change litter size. Both endocrine factors, such as follicle stimulating hormone and luteinizing hormone, as well as local factors, are known to regulate follicular growth and development. This review will focus on the role of local factors in regulation of ovarian follicular growth in ruminants, with a focus on members of the transforming growth factor superfamily. The potential role of these factors in regulating proliferation, apoptosis, steroidogenesis and responsiveness to gonadotrophins will be considered.
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Affiliation(s)
- Jennifer L Juengel
- Reproduction, Animal Science, AgResearch Ltd., Invermay Agricultural Centre, Mosgiel New Zealand
| | - Peter R Smith
- Reproduction, Animal Science, AgResearch Ltd., Invermay Agricultural Centre, Mosgiel New Zealand
| | - Laurel D Quirke
- Reproduction, Animal Science, AgResearch Ltd., Invermay Agricultural Centre, Mosgiel New Zealand
| | - Michelle C French
- Reproduction, Animal Science, AgResearch Ltd., Invermay Agricultural Centre, Mosgiel New Zealand
| | - Sara J Edwards
- Reproduction, Animal Science, AgResearch Ltd., Invermay Agricultural Centre, Mosgiel New Zealand
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Ferreira ACA, Cadenas J, Sá NAR, Correia HHV, Guerreiro DD, Lobo CH, Alves BG, Maside C, Gastal EL, Rodrigues APR, Figueiredo JR. In vitro culture of isolated preantral and antral follicles of goats using human recombinant FSH: Concentration-dependent and stage-specific effect. Anim Reprod Sci 2018; 196:120-129. [PMID: 30049427 DOI: 10.1016/j.anireprosci.2018.07.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 06/28/2018] [Accepted: 07/16/2018] [Indexed: 01/05/2023]
Abstract
The present study aimed to investigate a concentration-response curve of human recombinant FSH (hrFSH) for in vitro culture of isolated preantral and early antral follicles of goats. Isolated follicles were cultured for 18 days using the following treatments: basic culture medium (control); or control medium supplemented with 10, 50, and 100 mIU/mL of hrFSH. At the end of the culture, cumulus-oocyte complexes were recovered and subjected to in vitro maturation. The following endpoints were evaluated: follicle morphology, growth rate and antrum formation, oocyte viability and meiotic stage, and estradiol production, as well as relative expression of FSH receptor (FSHR), and steroidogenic enzyme (3β-HSD, CYP17, and CYP19A1) genes. In antral follicles, the FSH addition at 50 mIU/mL increased follicular diameter and growth rate, percentage of fully developed oocytes, and oocyte diameter (P < 0.05), and tended to increase the percentage of MII oocytes when compared to the control (P = 0.07). With preantral follicles, FSH addition at 100 mIU/mL increased relative abundance of mRNA for CYP19A1 when compared to the control (P < 0.05). At the same FSH concentrations of 100 and 50 mIU/mL, there was a greater relatively abundance of mRNA for 3β-HSD and CYP17 in preantral than in antral follicles (P < 0.05). For preantral and antral follicle comparisons when the same treatments were imposed, there were greater concentrations of estradiol for antral follicles (P < 0.05). In conclusion, hrFSH enhanced in a concentration-dependent manner the in vitro development of caprine antral follicles; however, there was no positive effect in the culture of preantral follicles.
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Affiliation(s)
- Anna Clara A Ferreira
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - Jesús Cadenas
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - Naiza A R Sá
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - Hudson H V Correia
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - Denise D Guerreiro
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - Carlos H Lobo
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Benner G Alves
- Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Carolina Maside
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Murcia, Murcia, Spain
| | - Eduardo L Gastal
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, IL, United States
| | - Ana Paula R Rodrigues
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - José Ricardo Figueiredo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil.
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The Mechanism of Melatonin and Its Receptor MT2 Involved in the Development of Bovine Granulosa Cells. Int J Mol Sci 2018; 19:ijms19072028. [PMID: 30002300 PMCID: PMC6073438 DOI: 10.3390/ijms19072028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 06/28/2018] [Accepted: 07/07/2018] [Indexed: 01/20/2023] Open
Abstract
Ovarian granulosa cells (GCs) are a critical approach to investigate the mechanism of gene regulation during folliculogenesis. The objective of this study was to investigate the role of MT2 in bovine GCs, and assess whether MT2 silencing affected GCs response to melatonin. We found that MT2 silencing significantly decreased the secretion of progesterone and estradiol, and increased the concentration of inhibin B and activin B. To further reveal the regulatory mechanism of MT2 silencing on steroids synthesis, it was found that the expression of CYP19A1 and CYP11A1 enzymes (steroid hormone synthesis) were down-regulated, while genes related to hormonal synthesis (StAR, RUNX2, INHA and INHBB) were up-regulated without affecting the expression of INHBA, suggesting that MT2 silencing may regulate hormone abundance. Furthermore, MT2 silencing significantly increased the expression of TGFBR3 and BMP6, and decreased the expression of LHR and DNMT1A without significant difference in the expression of FSHR and EGFR. In addition, MT2 silencing didn’t affect the effect of melatonin on increasing the expression of DNMT1A, EGFR, INHBA and LHR, and progesterone level, or decreasing INHA, TGFBR3 and StAR expression, and production of inhibin B. Moreover, MT2 silencing could disrupt the role of melatonin in decreasing the FSHR, INHBB and BMP6 expression, and activin B secretion. In conclusion, these results reveal that melatonin and MT2 are essential regulator of bovine GCs function by modulating reproduction-related genes expression, hormones secretion and other regulators of folliculogenesis.
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Correia H, Vieira L, Maside C, Paes V, Silva R, Alves B, Santos F, Apgar G, Rodrigues A, Figueiredo J. Ovarian transport temperature (4 vs 33 °C) impacts differently the in vitro development of isolated goat preantral and antral follicles. Small Rumin Res 2017. [DOI: 10.1016/j.smallrumres.2017.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nivet A, Vigneault C, Blondin P, Sirard M. Influence of luteinizing hormone support on granulosa cells transcriptome in cattle. Anim Sci J 2017; 89:21-30. [DOI: 10.1111/asj.12856] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 05/09/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Anne‐Laure Nivet
- Centre de recherche en reproduction développement et sante intergénérationnelle Faculté des sciences de l'agriculture et de l'alimentation Département des sciences animales INAF Université Laval QuébecQC Canada
| | | | | | - Marc‐Andre Sirard
- Centre de recherche en reproduction développement et sante intergénérationnelle Faculté des sciences de l'agriculture et de l'alimentation Département des sciences animales INAF Université Laval QuébecQC Canada
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23
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Max MC, Silva CB, González SM, Lindquist AG, Búfalo I, Gomes RG, Morotti F, Costa CB, Barreiros T, Lisboa LA, Seneda MM. The development and integrity of equine pre-antral follicles cultured in vitro with follicle-stimulating hormone (FSH) supplementation. Reprod Domest Anim 2017; 52:899-904. [PMID: 28580717 DOI: 10.1111/rda.12996] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 04/13/2017] [Indexed: 01/01/2023]
Abstract
This study investigated the effects of different concentrations of FSH (10, 50, 100 and 200 ng/ml) in supplemented MEM+ on the development of equine pre-antral follicles that were cultured in vitro for 2 or 6 days. The ovaries (n = 5) from mares in seasonal anoestrus were collected from a local abattoir. Ten ovarian tissue fragments of approximately 3 × 3 × 1 mm were obtained from each animal. The fragments were cultured in situ for 2 days (D2) or 6 days (D6) in MEM+ or MEM+ supplemented with FSH at four different concentrations, establishing the following 11 groups: control (D0); MEM + (D2); MEM + (D6); MEM + 10 ng/ml of FSH (D2); MEM + 10 ng/ml of FSH (D6); MEM + 50 ng/ml of FSH (D2); MEM + 50 ng/ml of FSH (D6); MEM + 100 ng/ml of FSH (D2); MEM + 100 ng/ml of FSH (D6); MEM + 200 ng/ml of FSH (D2); and MEM + 200 ng/ml of FSH (D6). Follicles were observed in only 9.65% (388 of 4,018) of the histological sections. Of the 861 follicles evaluated, 488 were in the primordial stage, and 373 were in various developmental stages; 59.7% were morphologically normal. Regarding the integrity of the pre-antral follicles, the groups with 100 ng/ml FSH of 2-days culture as well as 50, 100 and 200 ng/ml FSH of 6-days culture provided the best results. In conclusion, the in vitro culture of abattoir-derived equine ovarian fragments presented better morphological integrity when supplemented with FSH for 6 days, in comparison with the MEM culture group. However, no clear effects were observed with FSH regarding the promotion of activation from a primordial to a developing follicle.
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Affiliation(s)
- M C Max
- Laboratory of Animal Reproduction, University of Londrina, Londrina, PR, Brazil
| | - C B Silva
- Laboratory of Animal Reproduction, University of Londrina, Londrina, PR, Brazil
| | - S M González
- Laboratory of Animal Reproduction, University of Londrina, Londrina, PR, Brazil
| | - A G Lindquist
- Laboratory of Animal Reproduction, University of Londrina, Londrina, PR, Brazil
| | - I Búfalo
- Laboratory of Animal Reproduction, University of Londrina, Londrina, PR, Brazil
| | - R G Gomes
- Laboratory of Animal Reproduction, University of Londrina, Londrina, PR, Brazil
| | - F Morotti
- Laboratory of Animal Reproduction, University of Londrina, Londrina, PR, Brazil
| | - C B Costa
- Laboratory of Animal Reproduction, University of Londrina, Londrina, PR, Brazil
| | - Trr Barreiros
- Laboratory of Biotechnology of Animal Reproduction, UENP, Bandeirantes, PR, Brazil
| | - L A Lisboa
- Laboratory of Animal Reproduction, University of Londrina, Londrina, PR, Brazil
| | - M M Seneda
- Laboratory of Animal Reproduction, University of Londrina, Londrina, PR, Brazil
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24
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In vitro growth and maturation of isolated caprine preantral follicles: Influence of insulin and FSH concentration, culture dish, coculture, and oocyte size on meiotic resumption. Theriogenology 2017; 90:32-41. [DOI: 10.1016/j.theriogenology.2016.10.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 10/17/2016] [Accepted: 10/31/2016] [Indexed: 11/23/2022]
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25
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Songsasen N, Thongkittidilok C, Yamamizu K, Wildt DE, Comizzoli P. Short-term hypertonic exposure enhances in vitro follicle growth and meiotic competence of enclosed oocytes while modestly affecting mRNA expression of aquaporin and steroidogenic genes in the domestic cat model. Theriogenology 2016; 90:228-236. [PMID: 28166973 DOI: 10.1016/j.theriogenology.2016.12.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 12/02/2016] [Accepted: 12/03/2016] [Indexed: 12/31/2022]
Abstract
Using the domestic cat as a non-rodent, larger animal model, the objective was to determine the impact of a brief incubation in a hypertonic microenvironment on (1) ovarian follicle and oocyte growth in vitro, (2) developmental capacity of the resident oocyte, and (3) expression of aquaporin (AQP) genes in parallel with genes involved in regulation of folliculogenesis. In Study 1: Secondary or early antral follicles encapsulated in 0.5% alginate were allocated to one of three treatment groups: 1) culture in standard medium at 290 mOsm for 15 d (Control); 2) incubation in 350 mOsm medium for 1 h followed by culture in standard medium for 15 d (Hypertonic-1h); or 3) incubation in 350 mOsm medium for 24 h followed by incubation in standard medium for additional 14 d (Hypertonic-24h). After measuring follicle and oocyte diameters on Day 15, in vitro-grown oocytes were incubated for 24 h before assessing nuclear status. In Study 2: secondary or early antral follicles were subjected to one of the three treatments: 1) culture in standard medium at 290 mOsm for 48 h; 2) incubation in 350 mOsm medium for 1 h followed by culture in standard medium for additional 47 h; or 3) incubation in 350 mOsm medium for 24 h followed by culture in standard medium for additional 24 h. At the end of the culture period, all follicles were assessed for mRNA level of Cyp17a1, Cyp19a1, Star, Aqp1, 3, 5, 7 and 8 as well as Fshr using qPCR. Freshly collected follicles also were subjected to gene expression analysis and served as the 'Non-cultured control'. Hypertonic-24h follicles grew larger (P < 0.05) than the control, whereas those in Hypertonic-1h group exhibited intermediate growth, especially when the culture started at the early antral stage. Oocytes in the Hypertonic-24h group were larger and resumed meiosis at a higher rate than in the other treatments. In vitro culture affected (P < 0.05) mRNA expression of Cyp19a1, Star, Aqp1, and Aqp7 in both the secondary and early antral stage while Fshr was only affected in the former compared to the non-cultured control. Pre-incubating follicles in 350 mOsm medium for 24 h enhanced (P < 0.05) Star and Aqp7 while decreasing (P < 0.05) Aqp1 expression compared to the control in secondary follicles, but not in the early antral stage. In summary, short-term hypertonic exposure promoted cat follicle development in vitro (including the meiotic competence of the enclosed oocyte) possibly through a mechanism that does not involve water transport genes.
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Affiliation(s)
- N Songsasen
- Center for Species Survival, Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA, 22630, USA.
| | - C Thongkittidilok
- Center for Species Survival, Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA, 22630, USA
| | - K Yamamizu
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - D E Wildt
- Center for Species Survival, Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA, 22630, USA
| | - P Comizzoli
- Center for Species Survival, Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA, 22630, USA
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26
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Apolloni LB, Bruno JB, Alves BG, Ferreira ACA, Paes VM, Moreno JDLRC, de Aguiar FLN, Brandão FZ, Smitz J, Apgar G, de Figueiredo JR. Accelerated follicle growth during the culture of isolated caprine preantral follicles is detrimental to follicular survival and oocyte meiotic resumption. Theriogenology 2016; 86:1530-1540. [DOI: 10.1016/j.theriogenology.2016.05.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 04/14/2016] [Accepted: 05/13/2016] [Indexed: 11/17/2022]
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27
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Brito IR, Silva GM, Sales AD, Lobo CH, Rodrigues GQ, Sousa RF, Moura A, Calderón C, Bertolini M, Campello CC, Smitz J, Figueiredo JR. Fibrin-alginate hydrogel supports steroidogenesis, in vitro maturation of oocytes and parthenotes production from caprine preantral follicles cultured in group. Reprod Domest Anim 2016; 51:997-1009. [PMID: 27650787 DOI: 10.1111/rda.12779] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 08/02/2016] [Indexed: 11/28/2022]
Abstract
This study aimed to establish a culture system that improves the in vitro development of caprine preantral follicles. In a first experiment, follicles were encapsulated as a single unit per bead and cultured singly or in groups or with five follicles in the same alginate (ALG) bead for 18 days. In a subsequent experiment, the "five follicles per bead" design was chosen to culture in ALG, fibrin-alginate (FA) or hyaluronate (HA) for 18 days. In a third experiment, we chose the five follicles per bead in FA to culture for 30 days. The culture set-up of five follicles per ALG bead increased antrum formation and follicle diameter compared to the other culture designs (p < .05). Moreover, under this condition, 44.44% of the oocytes from in vitro cultured preantral follicles reached meiotic resumption. A significant increase of follicle diameter occurred in attachment system and FA (p < .05), but the ALG condition reached the highest among all groups on day 18 (p < .05). Follicles encapsulated in matrix produced more estradiol and progesterone than attachment system (p < .05). The expression of MMP-9 mRNA was higher in FA than in other groups (p < .05) and similar to antral follicles from in vivo control (p > .05). Only FA group resulted in oocytes matured. After 30 days, oocytes from preantral follicles in vitro grown in FA developed to eight-cell parthenotes. In conclusion, a culture system using FA supported the development of caprine preantral follicles cultured in group and included in the same bead of hydrogel, improving the oocyte maturation and producing parthenotes.
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Affiliation(s)
- I R Brito
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - G M Silva
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A D Sales
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - C H Lobo
- Department of Animal Science, Laboratory of Animal Physiology, Federal University of Ceará, Fortaleza, CE, Brazil
| | - G Q Rodrigues
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - R F Sousa
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - Aaa Moura
- Department of Animal Science, Laboratory of Animal Physiology, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Cem Calderón
- Biotechnology Laboratory, University of Fortaleza, Fortaleza, CE, Brazil
| | - M Bertolini
- Biotechnology Laboratory, University of Fortaleza, Fortaleza, CE, Brazil
| | - C C Campello
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - J Smitz
- Follicle Biology Laboratory, Vrije Universiteit Brussel, Brussels, Belgium
| | - J R Figueiredo
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
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28
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Impact of insulin concentration and mode of FSH addition on the in vitro survival and development of isolated bovine preantral follicles. Theriogenology 2016; 86:1137-1145. [PMID: 27207475 DOI: 10.1016/j.theriogenology.2016.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/15/2016] [Accepted: 04/03/2016] [Indexed: 11/22/2022]
Abstract
UNLABELLED The insulin and FSH are two important substances in the folliculogenesis process. Thus, the hypothesis of this experiment is that insulin concentration and the form of FSH addition affect the in vitro survival, growth, and estradiol production after culture of isolated bovine preantral follicles. The effects of insulin concentration (experiment 1) and the influence of both fixed and sequential concentrations of FSH (experiment 2) on the in vitro survival and development of bovine preantral follicles were investigated in this study by IVC for 18 days. In experiment 1, on Day 18 of culture, the addition of insulin at all concentrations promoted follicular survival rates significantly higher than that of the control, with the 10-ng/mL insulin treatment showing values significantly higher than the other treatments. The addition of 5- and 10-ng/mL insulin promoted higher follicular growth than the control and other treatments. In experiment 2, FSH 100 had a higher percentage of follicular viability compared with the control. FSH 100 produced follicle diameters significantly higher than those of the control and FSH seq. TREATMENT Estradiol levels in the presence of FSH (fixed concentration) were significantly higher than the other treatments. In conclusion, the association of insulin (10 ng/mL) and fixed concentration FSH (100 ng/mL) provides high rates of survival, growth, and estradiol production in bovine preantral follicles.
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29
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Silva JRV, van den Hurk R, Figueiredo JR. Ovarian follicle development in vitro and oocyte competence: advances and challenges for farm animals. Domest Anim Endocrinol 2016; 55:123-35. [PMID: 26836404 DOI: 10.1016/j.domaniend.2015.12.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 12/14/2015] [Accepted: 12/31/2015] [Indexed: 10/22/2022]
Abstract
During the last 2 decades, research on in vitro preantral follicle growth and oocyte maturation has delivered fascinating advances concerning the knowledge of processes regulating follicle growth and the developmental competence of oocytes. These advances include (1) information about the role of several hormones and growth factors on in vitro activation of primordial follicles; (2) increased understanding of the intracellular pathway involved in the initiation of primordial follicle growth; (3) the growth of primary and secondary follicles up to antral stages; and (4) production of embryos from oocytes from in vitro grown preantral follicles. This review article describes these advances, especially in regard farm animals, and discusses the reasons that limit embryo production from oocytes derived from preantral follicles cultured in vitro.
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Affiliation(s)
- J R V Silva
- Biotechnology Nucleus of Sobral, Federal University of Ceara, Sobral, CE 62042-280, Brazil.
| | - R van den Hurk
- Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Utrecht 80151, The Netherlands
| | - J R Figueiredo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceara, Fortaleza, CE 62700-000, Brazil
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30
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Araújo VR, Silva GM, Duarte ABG, Magalhães-Padilha DM, Almeida AP, Lunardi FO, Serafim MKB, Moura AAA, Campello CC, Rodrigues APR, Figueiredo JR. Bone Morphogenetic Protein-6 (BMP-6) Stimulates the Antrum Formation by the Regulation of its Signalling Pathway in Caprine Pre-antral Follicles Cultured In Vitro. Reprod Domest Anim 2015; 51:59-68. [PMID: 26660854 DOI: 10.1111/rda.12646] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Accepted: 10/27/2015] [Indexed: 01/18/2023]
Abstract
BMP-6 has been found to be important to ovarian cells and oocyte, as well as to uterus. Thus, this study investigated the effect of bone morphogenetic protein (BMP-6) and recombinant follicle-stimulating hormone (rFSH) alone or in combination on the in vitro culture (IVC) of isolated caprine secondary follicles (Experiment 1) and the mRNA levels for BMP receptors/Smad signalling pathway (BMPR1A, BMPR2, SMAD1, SMAD4, SMAD5, SMAD6, SMAD7 and SMAD8) in vivo and in vitro using BMP-6 (Experiment 2). Secondary follicles were cultured in αMEM(+) alone (control medium) or supplemented with BMP-6 at 1 or 10 ng/ml and rFSH alone or the combination of both BMP-6 concentrations and rFSH. The results from Experiment 1 showed that the antrum formation rate was higher in the BMP-6 at 1 ng/ml (p < 0.05) than in MEM. In Experiment 2, the mRNA expression for BMPR2, SMAD1, SMAD5 and SMAD6 was detected in non-cultured control and after in vitro culture (MEM and 1 ng/ml BMP-6); while the expression of SMAD7 and SMAD8 mRNA was only detected after IVC, SMAD4 was only detected in the BMP-6 at 1 ng/ml treatment. In conclusion, the low BMP-6 concentration positively influenced antrum formation and ensured normal mRNA expression for BMP receptor and Smads after IVC of caprine secondary follicles.
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Affiliation(s)
- V R Araújo
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - G M Silva
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A B G Duarte
- Medical School, Morphology Department, Federal University of Ceará, Fortaleza, CE, Brazil
| | - D M Magalhães-Padilha
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A P Almeida
- Laboratory of Molecular Biology and Development, University of Fortaleza, Fortaleza, CE, Brazil
| | - F O Lunardi
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - M K B Serafim
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A A A Moura
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, CE, Brazil
| | - C C Campello
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - A P R Rodrigues
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
| | - J R Figueiredo
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil
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31
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Jimenez CR, Araújo VR, Penitente-Filho JM, de Azevedo JL, Silveira RG, Torres CAA. The base medium affects ultrastructure and survival of bovine preantral follicles cultured in vitro. Theriogenology 2015; 85:1019-29. [PMID: 26711701 DOI: 10.1016/j.theriogenology.2015.11.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 11/04/2015] [Accepted: 11/07/2015] [Indexed: 10/22/2022]
Abstract
The aim of this study was to determine the effectiveness of minimum essential medium alpha modification (α-MEM), tissue culture medium 199 (TCM-199), and McCoy's medium (McCoy's) on IVC of preantral follicles included in the bovine ovarian cortex (in situ). Bovine ovarian fragments were cultured in α-MEM, TCM-199, or McCoy supplemented ((+)) with glutamine, insulin, transferrin, selenium, ascorbic acid, BSA, penicillin, streptomycin, and HEPES buffer in 24-well plates, at 37 °C and 5% CO2 for 1 or 7 days. The morphology of follicles, normal, primordial and development (primary and secondary), as well as viability and morphometric variables of follicles and oocytes were assessed. The morphology and morphometry of preantral follicles were analyzed by ANOVA followed by the Tukey and Dunnett tests, and viability variables were determined by the chi-square test. The results showed that TCM-199(+) reduced significantly (P < 0.05) the percentage of morphologically normal and viable follicles after 7 days of culture compared to the control. Similar results were observed in McCoy(+), in which the percentage of viable follicles after 7 days of culture was significantly lower (P < 0.05) than in the control. However, it was similar (P > 0.05) between α-MEM(+) and TCM-199(+). Moreover, follicular diameters in McCoy(+) and TCM-199(+) were significantly smaller (P < 0.05) than in control and α-MEM(+) after 7 days of culture. In addition, the ultrastructure of preantral follicles was similar between the control and α-MEM(+) after 7 days of culture. In conclusion, α-MEM(+) showed to be the most effective medium to preserve morphology, morphometry and ultrastructure of bovine preantral follicles, ensuring their viability and growth after in situ culture.
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Affiliation(s)
- Carolina Rodriguez Jimenez
- Laboratory of Physiology and Animal Reproduction, Department of Animal Science, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
| | - Valdevane Rocha Araújo
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, Ceará, Brazil
| | - Jurandy Mauro Penitente-Filho
- Laboratory of Physiology and Animal Reproduction, Department of Animal Science, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - Jovana Luiza de Azevedo
- Laboratory of Physiology and Animal Reproduction, Department of Animal Science, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - Renata Gomes Silveira
- Laboratory of Physiology and Animal Reproduction, Department of Animal Science, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - Ciro Alexandre Alves Torres
- Laboratory of Physiology and Animal Reproduction, Department of Animal Science, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
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Ferreira ACA, Maside C, Sá NAR, Guerreiro DD, Correia HHV, Leiva-Revilla J, Lobo CH, Araújo VR, Apgar GA, Brandão FZ, Figueiredo JR, Campello CC. Balance of insulin and FSH concentrations improves the in vitro development of isolated goat preantral follicles in medium containing GH. Anim Reprod Sci 2015; 165:1-10. [PMID: 26723481 DOI: 10.1016/j.anireprosci.2015.10.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 10/05/2015] [Accepted: 10/30/2015] [Indexed: 11/25/2022]
Abstract
The aim of this study was to evaluate the effect of different combinations of insulin and FSH concentrations in culture media containing GH on the in vitro follicle morphology, antrum formation, growth rates, estradiol (E2) production, oocyte viability and maturation as well as gene expression for FSHR, GHR, INSR, CYP19A1, CYP17, 3ßHSD. Secondary follicles were individually cultured for 18 days in a basic medium containing 50ng/mL GH supplemented with low insulin concentration (INS-LW: 10ng/mL) or high insulin concentration (INS-HG: 10μg/mL) alone or with a fixed FSH concentration (FSH100: 100ng/mL) or with increasing FSH concentrations (FSH-SEQ: 100ng/mL, days 0-6; 500ng/mL, days 6-12; 1000ng/mL days 12-18). In the INS-LW treatment was observed a higher (P<0.05) incidence of normal follicles at day 18 of culture. However, overall higher (P<0.05) follicular growth, oocyte diameter and meiotic resumption rates were obtained using INS-HG+FSH 100. The INS-HG and INS-HG+FSH100 treatments showed higher E2 production and mRNA levels for CYP19A1, CYP17, 3βHSD when compared to INS-LW and INS-LW+FSH100. However, the addition of increasing FSH concentration, regardless of insulin concentration, did not improve the follicular growth, meotic resumption, E2 production or gene expression of steroidogenic enzymes when compared with INS-HG+FSH100. In conclusion, in presence of GH, a basic medium supplemented with 10μg/mL insulin and 100μg/mL FSH throughout the culture period, improves follicular and oocyte growth, oocyte meiotic resumption and E2 production from isolated preantral caprine follicles cultured in vitro.
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Affiliation(s)
- A C A Ferreira
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil.
| | - C Maside
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - N A R Sá
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - D D Guerreiro
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - H H V Correia
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - J Leiva-Revilla
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - C H Lobo
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, CE, Brazil
| | - V R Araújo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil; Health Sciences Center, State University of Ceará, Fortaleza, CE, Brazil
| | - G A Apgar
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, USA
| | - F Z Brandão
- Department of Animal Reproduction, Faculty of Veterinary, Federal University Fluminense, Rio de Janeiro, RJ, Brazil
| | - J R Figueiredo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
| | - C C Campello
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil
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Langbeen A, De porte HF, Bartholomeus E, Leroy JL, Bols PE. Bovine in vitro reproduction models can contribute to the development of (female) fertility preservation strategies. Theriogenology 2015; 84:477-89. [DOI: 10.1016/j.theriogenology.2015.04.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 04/01/2015] [Accepted: 04/11/2015] [Indexed: 01/06/2023]
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Scarlet D, Walter I, Hlavaty J, Aurich C. Expression and immunolocalisation of follicle-stimulating hormone receptors in gonads of newborn and adult female horses. Reprod Fertil Dev 2015; 28:RD14392. [PMID: 25693905 DOI: 10.1071/rd14392] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 01/15/2015] [Indexed: 12/15/2022] Open
Abstract
In mares, FSH and its receptor (FSHR) are essential for ovarian function. The objective of the present study was to analyse FSHR gene expression at the mRNA and protein levels in ovarian tissue from newborn and adult horses. Expression of mRNA was analysed by reverse transcription polymerase chain reaction, whereas FSHR protein was visualised by immunohistochemistry (IHC), immunofluorescence labelling (IF) and western blot. FSHR mRNA was detected in ovarian follicles and luteal tissue from adult mares, as well as in the ovaries of neonates. Follicular growth up to 4mm in diameter was already present in neonates. Using IHC and IF, FSHR protein was detected in granulosa cells, cumulus cells and inconsistently in oocytes, independent of the animal's age or the stage of folliculogenesis. A lower FSHR expression was observed in theca cells in comparison to granulosa cells. FSHR was abundant in the ovarian stroma cells of neonates but not of adults. Luteal cells stained positive for FSHR independent of the stage of corpus luteum development. The presence of FSHR protein in various cell populations of the ovary was confirmed by western blot. In conclusion, FSHR is present in horse ovaries consistently from birth onwards and expression remains constant during the oestrous cycle.
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Rodrigues GQ, Bertoldo MJ, Brito IR, Silva CMG, Sales AD, Castro SV, Duffard N, Locatelli Y, Mermillod P, Lobo CH, Campello CC, Rodrigues APR, Freitas VJF, Figueiredo JR. Relative mRNA expression and immunolocalization for transforming growth factor-beta (TGF-β) and their effect on in vitro development of caprine preantral follicles. In Vitro Cell Dev Biol Anim 2014; 50:688-99. [PMID: 24879083 DOI: 10.1007/s11626-014-9775-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 04/28/2014] [Indexed: 11/25/2022]
Abstract
This study aimed to evaluate the immunolocalization and messenger RNA (mRNA) expression for transforming growth factor-beta (TGF-β) and its receptors (TGF-βRI and RII), as well as mRNA expression for P450 aromatase and FSH receptor in caprine preantral follicles. The effects of TGF-β, FSH alone, or in association on the in vitro follicular development were also assessed. Immunohistochemical analyses showed the expression of TGF-β and its receptors in oocytes of all follicle stages and granulosa cells of primary and secondary follicles. mRNA for TGF-β receptors and for FSH receptor (FSHR) was present in preantral follicles as well as in oocytes and granulosa cells of antral follicles. Isolated secondary follicles were cultured in α-minimum essential medium (MEM) alone or supplemented with either FSH (100 ng/ml), TGF-β (10 ng/ml), or TGF-β + FSH for 18 d. TGF-β increased significantly oocyte diameter when compared to FSH alone and control. After 18 d of culture, all groups showed a significant reduction in P450 aromatase and FSHR mRNA levels in comparison to fresh control. In contrast, treatment with FSH significantly increased the mRNA expression for TGF-β in comparison to fresh control and other treatments. In conclusion, the findings showed that TGF-β and its receptors are present in caprine ovarian follicles. Furthermore, they showed a positive effect on oocyte growth in vitro.
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Affiliation(s)
- G Q Rodrigues
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary, State University of Ceará, Fortaleza, CE, Brazil,
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Effects of jacalin and follicle-stimulating hormone on in vitro goat primordial follicle activation, survival and gene expression. ZYGOTE 2014; 23:537-49. [DOI: 10.1017/s0967199414000173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
SummaryThis study aims to investigate the effects of jacalin and follicle-stimulating hormone (FSH) on activation and survival of goat primordial follicles, as well as on gene expression in cultured ovarian tissue. Ovarian fragments were cultured for 6 days in minimum essential medium (MEM) supplemented with jacalin (10, 25, 50 or 100 μg/ml – Experiment 1) or in MEM supplemented with jacalin (50 μg/ml), FSH (50 ng/ml) or both (Experiment 2). Non-cultured and cultured tissues were processed for histological and ultrastructural analysis. Cultured tissues from Experiment 2 were also stored to evaluate the expression of BMP-15, KL (Kit ligand), c-kit, GDF-9 and proliferating cell nuclear antigen (PCNA) by real-time polymerase chain reaction (PCR). The results of Experiment 1 showed that, compared with tissue that was cultured in control medium, the presence of 50 μg/ml of jacalin increased both the percentages of developing follicles and viability. In Experiment 2, after 6 days, higher percentages of normal follicles were observed in tissue cultured in presence of FSH, jacalin or both, but no synergistic interaction between FSH and jacalin was observed. These substances had no significant effect on the levels of mRNA for BMP-15 and KL, but FSH increased significantly the levels of mRNA for PCNA and c-kit. On the other hand, jacalin reduced the levels of mRNA for GDF-9. In conclusion, jacalin and FSH are able to improve primordial follicle activation and survival after 6 days of culture. Furthermore, presence of FSH increases the expression of mRNA for PCNA and c-kit, but jacalin resulted in lower GDF-9 mRNA expression.
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Brito IR, Silva CMG, Duarte ABG, Lima IMT, Rodrigues GQ, Rossetto R, Sales AD, Lobo CH, Bernuci MP, Rosa-E-Silva ACJS, Campello CC, Xu M, Figueiredo JR. Alginate hydrogel matrix stiffness influences the in vitro development of caprine preantral follicles. Mol Reprod Dev 2014; 81:636-45. [PMID: 24700587 DOI: 10.1002/mrd.22330] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Accepted: 03/27/2014] [Indexed: 11/08/2022]
Abstract
This study examined caprine follicular development in different concentrations of alginate matrix to determine the optimal conditions for culture. Caprine preantral follicles were cultured in a two-dimensional system (control) or a three-dimensional encapsulated system in 0.25%, 0.5%, or 1% alginate (ALG 0.25, ALG 0.5, and ALG 1, respectively). A higher percentage of morphologically normal follicles developed in ALG 0.5 and ALG 1 than in ALG 0.25 or the control (P < 0.05). The rate of antrum formation, however, was higher in ALG 0.25 than in ALG 0.5 and ALG 1 conditions (P < 0.05), but similar to the control. Follicles cultured in ALG 0.25 had higher growth rates and meiotic resumption than those cultured in ALG 0.5, ALG 1, or the control (P < 0.05). Moreover, follicles cultured in ALG 0.25 had higher levels of estradiol and progesterone than those cultured in ALG 0.5, ALG 1, or the control, as well as higher levels of CYP19A1 and HSD3B mRNA. In conclusion, a three-dimensional system that uses ALG 0.25 fosters the in vitro development of caprine preantral follicles and increases the rate of meiotic resumption.
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Affiliation(s)
- I R Brito
- Faculty of Veterinary, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), PPGCV, State University of Ceará, Fortaleza, CE, Brazil
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Barros VRP, Cavalcante AYP, Macedo TJS, Barberino RS, Lins TLB, Gouveia BB, Menezes VG, Queiroz MAA, Araújo VR, Palheta RC, Leite MCP, Matos MHT. Immunolocalization of Melatonin and Follicle-Stimulating Hormone Receptors in Caprine Ovaries and their Effects Duringin vitroDevelopment of Isolated Pre-Antral Follicles. Reprod Domest Anim 2013; 48:1025-33. [DOI: 10.1111/rda.12209] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 06/03/2013] [Indexed: 12/15/2022]
Affiliation(s)
- VRP Barros
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - AYP Cavalcante
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - TJS Macedo
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - RS Barberino
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - TLB Lins
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - BB Gouveia
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - VG Menezes
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - MAA Queiroz
- Laboratory of Bromatology and Animal Nutrition; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - VR Araújo
- Faculty of Veterinary Medicine; LAMOFOPA; State University of Ceara; Fortaleza CE Brazil
| | - RC Palheta
- Laboratory of Physiology; Federal University of San Francisco Valley; Petrolina PE Brazil
| | - MCP Leite
- Center of Agrarian; Ambiental and Biological Sciences; Federal University of Reconcavo of Bahia; Cruz das Almas BA Brazil
| | - MHT Matos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development; Federal University of San Francisco Valley; Petrolina PE Brazil
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Abstract
The role of activin-A in follicular development and on the mRNA expression levels of different genes in goat secondary follicles was evaluated. Goat secondary follicles (≥ 150 μm) were cultured for 18 days under control conditions or with the addition of either 50 or 100 ng/ml activin-A (Experiment 1). The mRNA levels for the genes that code for activin-A, ActR-IA, ActR-IB, ActR-IIA, ActR-IIB, follicle stimulating hormone receptor (FSH-R) and P450 aromatase were measured in each condition (Experiment 2). We observed that after 6 days of culture, the antrum formation rate was higher in cultures with added activin-A than in the cultured control (P < 0.05). The addition of 50 ng/ml activin-A increased the follicular growth rate in the final third of the culture (days 12-18), resulting in a higher percentage of meiosis resumption (P < 0.05). On day 6, the addition of activin-A (50 ng/ml) increased the levels of ActR-IA mRNA compared with the cultured control (P < 0.05). After 18 days, the addition of 50 ng/ml activin-A significantly increased the levels of its own mRNA compared with the non-cultured control. Moreover, this treatment reduced the mRNA levels of P450 aromatase in comparison with the cultured control (P < 0.05). Higher levels of P450 aromatase mRNA were found for both activin-A treatments compared with the non-cultured control (P < 0.05). No difference in estradiol levels was detected among any of the tested treatments. In conclusion, the addition of activin-A to culture medium stimulated early antrum formation as well as an increase in the daily follicular growth rate and the percentage of meiosis resumption.
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Magalhães-Padilha DM, Geisler-Lee J, Wischral A, Gastal MO, Fonseca GR, Eloy YRG, Geisler M, Figueiredo JR, Gastal EL. Gene Expression During Early Folliculogenesis in Goats Using Microarray Analysis. Biol Reprod 2013; 89:19. [PMID: 23759311 DOI: 10.1095/biolreprod.112.106096] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Understanding of gene expression and metabolic, biological and physiological pathways in ovarian follicular development can have a significant impact on the dynamics of follicular atresia or survival. In fact, some oocyte loss occurs during the transition from secondary to early tertiary follicles. This study aimed to understand, by microarray analysis, the temporal changes in transcriptional profiles of secondary and early antral (tertiary) follicles in caprine ovaries. Ovarian follicles were microdissected and pooled to extract total RNA. The RNA was cross hybridized with the bovine array. Among 23,987 bovine genes, a total of 14,323 genes were hybridized with goat mRNAs while 9,664 genes were not. Of all the hybridized genes, 2,466 were stage-specific, up- and down-regulated in the transition from secondary to early tertiary follicles. Gene expression profiles showed that three major metabolic pathways (lipid metabolism, cell death, and hematological system) were significantly differentiated between the two follicle stages. In conclusion, this study has identified important genes and pathways which may potentially be involved in the transition from secondary to early tertiary follicles in goats.
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Cunha EV, Costa JJN, Rossi RODS, Silva AWB, Passos JRS, Portela AMLR, Pereira DCST, Donato MAM, Campello CC, Saraiva MVA, Peixoto CA, Silva JRV, Santos RP. Phytohemagglutinin improves the development and ultrastructure of in vitro-cultured goat (Capra hircus) preantral follicles. Braz J Med Biol Res 2013; 46:245-52. [PMID: 23558855 PMCID: PMC3854373 DOI: 10.1590/1414-431x20122702] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Accepted: 12/14/2012] [Indexed: 11/22/2022] Open
Abstract
The objective this study was to determine the effect of phytohemagglutinin (PHA)
on survival, growth and gene expression in caprine secondary follicles cultured
in vitro. Secondary follicles (∼0.2 mm) were isolated from
the cortex of caprine ovaries and cultured individually for 6 days in
α-MEM+ supplemented with PHA (0, 1, 10, 50, 100, or 200 µg/mL).
After 6 days of culture, follicle diameter and survival, antrum formation,
ultrastructure and expression of mRNA for FSH receptors (FSH-R), proliferating
cell nuclear antigen (PCNA), and neuronal nitric oxide synthase were determined.
All treatments maintained follicular survival [α-MEM+ (94.59%);
1 µg/mL PHA (96.43%); 10 µg/mL PHA (84.85%); 50 µg/mL PHA (85.29%); 100 µg/mL
PHA (88.57%), and 200 µg/mL PHA (87.50)], but the presence of 10 µg/mL PHA in
the culture medium increased the antrum formation rate (21.21%) when compared
with control (5.41%, P < 0.05) and ensured the maintenance of oocyte and
granulosa cell ultrastructures after 6 days of culture. The expression of mRNA
for FSH-R (2.7 ± 0.1) and PCNA (4.4 ± 0.2) was also significantly increased in
follicles cultured with 10 µg/mL PHA in relation to those cultured in
α-MEM+ (1.0 ± 0.1). In conclusion, supplementation of culture
medium with 10 µg/mL PHA maintains the follicular viability and ultrastructure,
and promotes the formation of antral cavity after 6 days of culture in
vitro.
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Affiliation(s)
- E V Cunha
- Núcleo de Biotecnologia de Sobral, NUBIS, Universidade Federal do Ceará, Sobral, CE, Brasil
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Vasconcelos GL, Saraiva MVA, Costa JJN, Passos MJ, Silva AWB, Rossi RODS, Portela AMLR, Duarte ABG, Magalhães-Padilha DM, Campelo CC, Figueiredo JR, van den Hurk R, Silva JRV. Effects of growth differentiation factor-9 and FSH on in vitro development, viability and mRNA expression in bovine preantral follicles. Reprod Fertil Dev 2013; 25:1194-203. [DOI: 10.1071/rd12173] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 11/16/2012] [Indexed: 12/12/2022] Open
Abstract
The present study investigated the role of growth differentiation factor (GDF)-9 and FSH, alone or in combination, on the growth, viability and mRNA expression of FSH receptor, proliferating cell nuclear antigen (PCNA) and proteoglycan-related factors (i.e. hyaluronan synthase (HAS) 1, HAS2, versican, perlecan) in bovine secondary follicles before and after in vitro culture. After 12 days culture, sequential FSH (100 ng mL–1 from Days 0 to 6 and 500 ng mL–1 from Days 7 to 12) increased follicular diameter and resulted in increased antrum formation (P < 0.05). Alone, 200 ng mL–1 GDF-9 significantly reduced HAS1 mRNA levels, but increased versican and perlecan mRNA levels in whole follicles, which included the oocyte, theca and granulosa cells. Together, FSH and GDF-9 increased HAS2 and versican (VCAN) mRNA levels, but decreased PCNA mRNA expression, compared with levels in follicles cultured in α-minimum essential medium supplemented with 3.0 mg mL–1 bovine serum albumin, 10 µg mL–1 insulin, 5.5 µg mL–1 transferrin, 5 ng mL–1 selenium, 2 mM glutamine, 2 mM hypoxanthine and 50 μg mL–1 ascorbic acid (α-MEM+). Comparisons of uncultured (0.2 mm) and α-MEM+ cultured follicles revealed that HAS1 mRNA expression was higher, whereas VCAN expression was lower, in cultured follicles (P < 0.05). Expression of HAS1, VCAN and perlecan (HSPG2) was higher in cultured than in vivo-grown (0.3 mm) follicles. In conclusion, FSH and/or GDF-9 promote follicular growth and antrum formation. Moreover, GDF-9 stimulates expression of versican and perlecan and interacts positively with FSH to increase HAS2 expression.
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Silva CMG, Castro SV, Faustino LR, Rodrigues GQ, Brito IR, Rossetto R, Saraiva MVA, Campello CC, Lobo CH, Souza CEA, Moura AAA, Donato MAM, Peixoto CA, Figueiredo JR. The effects of epidermal growth factor (EGF) on the in vitro development of isolated goat secondary follicles and the relative mRNA expression of EGF, EGF-R, FSH-R and P450 aromatase in cultured follicles. Res Vet Sci 2012; 94:453-61. [PMID: 23270918 DOI: 10.1016/j.rvsc.2012.12.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2012] [Accepted: 12/03/2012] [Indexed: 11/19/2022]
Abstract
The effects of varying concentrations of EGF were evaluated in terms of in vitro follicular development and the mRNA expression levels of EGF, EGF-R, FSH-R and P450 aromatase. After 6 days, the addition of 50 ng/mL of EGF to the culture medium increased the antrum formation rates in comparison to cultured control and after 18 days of culture produced oocytes with higher rates of meiosis resumption when compared to the other treatments (P<0.05). The daily follicular growth rates in presence of EGF (50 or 100) were increased in comparison to the cultured control (P<0.05). Treatment with EGF 50 stimulated the expression of EGF mRNA but reduced EGF-R mRNA expression and estradiol secretion as compared to the cultured control (P<0.05). After 18 days of culture, the mRNA levels for FSH-R and P450 aromatase were greater than those of the non-cultured controls (P<0.05). In conclusion, the effects of EGF treatment on the mRNA levels for EGF, EGF-R, FSH-R, and P450 aromatase varied according to the stage of follicle development.
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Affiliation(s)
- C M G Silva
- Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, State University of Ceará, Fortaleza, Brazil.
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44
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Costa JJN, Passos MJ, Leitão CCF, Vasconcelos GL, Saraiva MVA, Figueiredo JR, van den Hurk R, Silva JRV. Levels of mRNA for bone morphogenetic proteins, their receptors and SMADs in goat ovarian follicles grown in vivo and in vitro. Reprod Fertil Dev 2012; 24:723-32. [PMID: 22697122 DOI: 10.1071/rd11195] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Accepted: 10/31/2011] [Indexed: 12/15/2022] Open
Abstract
This study investigated the stability of housekeeping genes (glyceraldehyde-3-phosphate dehydrogenase, β-tubulin, β-actin, phosphoglycerate kinase (PGK), 18S rRNA, ubiquitin and ribosomal protein 19) and the levels of mRNA for bone morphogenetic protein-2 (BMP-2), -4 (BMP-4), -6 (BMP-6), -7 (BMP-7) and -15 (BMP-15), their receptors (BMPR-IA, -IB and -II) and Similar to Mothers Against Decapentaplegic (SMADs) (-1, -5 and -8) in goat follicles of 0.2, 0.5 and 1.0mm, as well as in secondary follicles before and after culture for 18 days. β-tubulin and PGK were the most stable housekeeping genes and the levels of mRNA for BMP-2 in follicles of 0.2mm were higher than in follicles of 0.5 and 1.0mm. For BMP-4, -6 and -7, the highest levels of mRNA were found in follicles of 1.0mm. The expression of BMPR-IB was higher in follicles of 0.2mm, whereas the levels of BMPR-II were higher in follicles of 0.5mm. The levels of mRNA for SMAD-5 were higher in follicles of 0.2mm, whereas SMAD-8 had higher levels in 0.5-mm follicles. After culture, follicles showed increased levels of mRNA for BMP-2 and reduced mRNA for BMP-4, BMP-7, BMPR-IA and SMAD-5. In conclusion, β-tubulin and PGK are the most stable reference genes, and BMPs, their receptors and SMADs have variable levels of mRNA in the follicular size classes analysed.
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Affiliation(s)
- J J N Costa
- Biotechnology Nucleus of Sobral - NUBIS, Federal University of Ceara, CEP 62042-280, Sobral, CE, Brazil
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Long-term in vitro culture of ovarian cortical tissue in goats: effects of FSH and IGF-I on preantral follicular development and FSH and IGF-I receptor mRNA expression. Cell Tissue Res 2012; 350:503-11. [DOI: 10.1007/s00441-012-1498-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Accepted: 08/27/2012] [Indexed: 10/27/2022]
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Chaves RN, Duarte ABG, Rodrigues GQ, Celestino JJ, Silva GM, Lopes CAP, Almeida AP, Donato MA, Peixoto C, Moura AA, Lobo CH, Locatelli Y, Mermillod P, Campello CC, Figueiredo JR. The Effects of Insulin and Follicle-Simulating Hormone (FSH) During In Vitro Development of Ovarian Goat Preantral Follicles and the Relative mRNA Expression for Insulin and FSH Receptors and Cytochrome P450 Aromatase in Cultured Follicles1. Biol Reprod 2012; 87:69. [DOI: 10.1095/biolreprod.112.099010] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Brito IR, Lima IMT, Saraiva MVA, Silva CMG, Magalhães-Padilha DM, Araújo VR, Barreto Luz V, Barbalho Silva AW, Campello CC, Silva JRV, Figueiredo JR. Expression Levels of mRNA-Encoding PDGF Receptors in Goat Ovaries and the Influence of PDGF on the In Vitro Development of Caprine Pre-Antral Follicles. Reprod Domest Anim 2011; 47:695-703. [DOI: 10.1111/j.1439-0531.2011.01946.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lima IMT, Brito IR, Rodrigues GQ, Silva CMG, Magalhães-Padilha DM, Lima LF, Celestino JJH, Campello CC, Silva JRV, Figueiredo JR, Rodrigues APR. Presence of c-kit mRNA in goat ovaries and improvement of in vitro preantral follicle survival and development with kit ligand. Mol Cell Endocrinol 2011; 345:38-47. [PMID: 21763396 DOI: 10.1016/j.mce.2011.07.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 07/01/2011] [Accepted: 07/01/2011] [Indexed: 10/18/2022]
Abstract
This study evaluated the levels of c-kit mRNA in goat follicles and the effects of kit ligand (KL) on the in vitro development of cultured preantral follicles. Preantral follicles isolated from goat ovarian cortex were cultured for 18 days in α-MEM(+) supplemented with KL (0, 50 or 100 ng/mL) in the absence or presence of follicle stimulating hormone (FSH). Real-time PCR showed that c-kit mRNA was higher in primordial and primary follicles than in secondary stage. Regarding the culture, KL addition in the absence of FSH improved the follicular survival, antrum formation, oocyte growth and meiotic resumption. KL-positive effects were not observed in the presence of FSH. In conclusion, c-kit mRNAs are detected in all follicular categories. KL promotes the survival and antral cavity formation of caprine preantral follicles after in vitro culture, as well as the growth and meiotic resumption of their oocytes in the absence of FSH.
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Affiliation(s)
- I M T Lima
- Faculty of Veterinary, Laboratory of Manipulation of Oocyte and Preantral Follicles, State University of Ceará, Fortaleza, CE, Brazil.
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Araújo VR, Silva GM, Duarte ABG, Magalhães DM, Almeida AP, Gonçalves RFB, Bruno JB, Silva TFP, Campello CC, Rodrigues APR, Figueiredo JR. Vascular endothelial growth factor-A(165) (VEGF-A(165)) stimulates the in vitro development and oocyte competence of goat preantral follicles. Cell Tissue Res 2011; 346:273-81. [PMID: 21987221 DOI: 10.1007/s00441-011-1251-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Accepted: 09/15/2011] [Indexed: 11/25/2022]
Abstract
The aim of this study was to evaluate the effect of vascular endothelial growth factor-A(165) (VEGF-A(165)) on the in vitro development of goat secondary preantral follicles. Preantral follicles (≥150 μm in diameter) were isolated from the ovaries of adult mixed-breed goats and individually cultured for 18 days in αMEM in the absence (control) or presence of VEGF-A(165) at concentrations of 10 ng/ml (VEGF10) and 100 ng/ml (VEGF100). Analyses of follicular survival, diameter, antrum formation and rate of daily growth were performed every 6 days. At the end of the culture period, morphologically normal oocytes (≥110 μm in diameter) were taken for in vitro maturation (IVM). The results demonstrated that all follicles presented oocytes and granulosa cells that were morphologically normal and after labeling with calcein-AM, high rates of oocyte viability were observed in all treatments. The follicular diameter and the growth rate achieved in the presence of VEGF10 were higher than those of the control. Both treatments with VEGF-A(165) showed higher rates of oocyte recovery for IVM when compared with the control. Moreover, only the addition of VEGF-A(165) permitted oocytes grown in vitro to reach metaphase II. Thus, the addition of VEGF-A(165) to the culture medium improves the development of goat preantral follicles cultured in vitro, allowing the production of mature oocytes.
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Affiliation(s)
- V R Araújo
- Laboratory of Manipulation of Oocytes and Preantral Follicles, Faculty of Veterinary Medicine, State University of Ceara, Fortaleza, CE, Brazil.
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Celestino JJH, Bruno JB, Saraiva MVA, Rocha RMP, Brito IR, Duarte ABG, Araújo VR, Silva CMG, Matos MHT, Campello CC, Silva JRV, Figueiredo JR. Steady-state level of epidermal growth factor (EGF) mRNA and effect of EGF on in vitro culture of caprine preantral follicles. Cell Tissue Res 2011; 344:539-50. [PMID: 21503599 DOI: 10.1007/s00441-011-1162-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 03/01/2011] [Indexed: 01/27/2023]
Abstract
Our aim was to verify the steady-state level of epidermal growth factor (EGF) mRNA in goat follicles at various developmental stages and to investigate the influence of EGF on the survival, antrum formation and growth of secondary follicles cultured for 6 days. Primordial, primary and secondary goat follicles and small and large antral follicles were obtained to quantify EGF mRNA by real-time reverse transcription with the polymerase chain reaction. The influence of EGF and the presence or absence of follicle-stimulating hormone (FSH) on the development of secondary follicles and on mRNA expression for EGF and FSH receptor (FSH-R) was determined after 6 days of culture. Survival, antrum formation and follicular diameter were evaluated every other day of culture. EGF mRNA levels in secondary follicles were significantly higher than those in primordial follicles, whereas in small and large antral follicles, EGF mRNA levels in cumulus-oocyte complexes (COCs) were significantly higher than in granulosa/theca cells. During culture, EGF in the presence or absence of FSH increased the follicular daily growth rate of secondary follicles when compared with that in enriched alpha minimal essential medium. FSH, EGF or both reduced EGF mRNA levels, whereas EGF reduced FSH-R mRNA levels after follicle culture for 6 days. Thus, EGF mRNA levels are higher in secondary follicles than in earlier stages, with both FSH and EGF promoting the growth of goat secondary follicles. EGF and/or FSH reduce EGF mRNA levels, whereas EGF decreases FSH-R mRNA levels, in cultured secondary follicles.
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