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Benedetti C, Pavani KC, Gansemans Y, Azari-Dolatabad N, Pascottini OB, Peelman L, Six R, Fan Y, Guan X, Deserranno K, Fernández-Montoro A, Hamacher J, Van Nieuwerburgh F, Fair T, Hendrix A, Smits K, Van Soom A. From follicle to blastocyst: microRNA-34c from follicular fluid-derived extracellular vesicles modulates blastocyst quality. J Anim Sci Biotechnol 2024; 15:104. [PMID: 39097731 PMCID: PMC11298084 DOI: 10.1186/s40104-024-01059-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 06/04/2024] [Indexed: 08/05/2024] Open
Abstract
BACKGROUND Within the follicular fluid, extracellular vesicles (EVs) guide oocyte growth through their cargo microRNAs (miRNAs). Here, we investigated the role of EVs and their cargo miRNAs by linking the miRNAs found in EVs, derived from the fluid of an individual follicle, to the ability of its oocyte to become a blastocyst (competent) or not (non-competent). METHODS Bovine antral follicles were dissected, categorized as small (2-4 mm) or large (5-8 mm) and the corresponding oocytes were subjected to individual maturation, fertilization and embryo culture to the blastocyst stage. Follicular fluid was pooled in 4 groups (4 replicates) based on follicle size and competence of the corresponding oocyte to produce a blastocyst. Follicular fluid-derived EVs were isolated, characterized, and subjected to miRNA-sequencing (Illumina Miseq) to assess differential expression (DE) in the 4 groups. Functional validation of the effect of miR-34c on embryo development was performed by supplementation of mimics and inhibitors during in vitro maturation (IVM). RESULTS We identified 16 DE miRNAs linked to oocyte competence when follicular size was not considered. Within the large and small follicles, 46 DE miRNAs were driving blastocyst formation in each group. Comparison of EVs from competent small and large follicles revealed 90 DE miRNAs. Cell regulation, cell differentiation, cell cycle, and metabolic process regulation were the most enriched pathways targeted by the DE miRNAs from competent oocytes. We identified bta-miR-34c as the most abundant in follicular fluid containing competent oocytes. Supplementation of miR-34c mimic and inhibitor during IVM did not affect embryo development. However, blastocyst quality, as evidenced by higher cell numbers, was significantly improved following oocyte IVM in the presence of miR-34c mimics, while miR-34c inhibitors resulted in the opposite effect. CONCLUSION This study demonstrates the regulatory effect of miRNAs from follicular fluid-derived EVs on oocyte competence acquisition, providing a further basis for understanding the significance of miRNAs in oocyte maturation and embryonic development. Up-regulation of miR-34c in EVs from follicular fluid containing competent oocytes and the positive impact of miR-34c mimics added during IVM on the resulting blastocysts indicate its pivotal role in oocyte competence.
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Affiliation(s)
- Camilla Benedetti
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
| | - Krishna Chaitanya Pavani
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
- Department for Reproductive Medicine, Ghent University Hospital, 9000, Ghent, Belgium
| | - Yannick Gansemans
- Laboratory of Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, B-9000, Ghent, Belgium
| | | | - Osvaldo Bogado Pascottini
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
| | - Luc Peelman
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, B-9000, Ghent, Belgium
| | - Rani Six
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, B-9000, Ghent, Belgium
| | - Yuan Fan
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, B-9000, Ghent, Belgium
| | - Xuefeng Guan
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, B-9000, Ghent, Belgium
| | - Koen Deserranno
- Laboratory of Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, B-9000, Ghent, Belgium
| | - Andrea Fernández-Montoro
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
| | - Joachim Hamacher
- Institute of Crop Science and Resource Conservation, Plant Pathology, Rheinische Friedrich-Wilhelms-University of Bonn, 53115, Bonn, Germany
| | - Filip Van Nieuwerburgh
- Laboratory of Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, B-9000, Ghent, Belgium
| | - Trudee Fair
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, Ireland
| | - An Hendrix
- Laboratory of Experimental Cancer Research, Department of Human Structure and Repair, Ghent University, B-9000, Ghent, Belgium
| | - Katrien Smits
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium.
| | - Ann Van Soom
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium.
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Zhang R, Zhou Z, Wang P, He X, Liu Y, Chu M. The SLC19A1-AS/miR-1343/WNT11 axis is a novel positive regulatory ceRNA network governing goat granulosa cell proliferation. Int J Biol Macromol 2024; 264:130658. [PMID: 38484817 DOI: 10.1016/j.ijbiomac.2024.130658] [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: 01/29/2024] [Revised: 02/18/2024] [Accepted: 03/04/2024] [Indexed: 03/18/2024]
Abstract
Long noncoding RNAs (lncRNAs), as competitive endogenous RNAs (ceRNAs), can directly or indirectly affect the proliferation and apoptosis of granulosa cells by regulating microRNA (miRNA) pathways. A ceRNA network of the SLC19A1-AS-miR-1343-WNT11 axis was constructed via comprehensive transcriptome sequencing of ovaries from goats with various fertility levels to further elucidate the function and regulatory mechanism of SLC19A1-AS in modulating miR-1343 and WNT11 during granulosa cell proliferation and apoptosis. Subsequent validation experiments were conducted in vitro using granulosa cells. In these experiments, we performed RNA immunoprecipitation (RIP) and identified SLC19A1-AS as a ceRNA in goat granulosa cells that promoted proliferation. Through bioinformatics prediction, luciferase reporter gene assays, and RNA pulldown assays, we confirmed that SLC19A1-AS acts as a sponge for miR-1343, preventing its binding to WNT11 mRNA and thereby increasing the expression of WNT11. This interaction also influenced the proliferation and apoptosis of granulosa cells. Our study systematically validated the biological function of the lncRNA-miRNA-mRNA ceRNA network in goat ovaries and revealed the potential regulatory mechanism by which SLC19A1-AS functions as a ceRNA in granulosa cells. These findings are expected to provide an important experimental foundation for further elucidating the physiological regulatory network of the ovary and contributing to reproductive health in goats.
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Affiliation(s)
- Runan Zhang
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - Zuyang Zhou
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - Peng Wang
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - Xiaoyun He
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - Yufang Liu
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China.
| | - Mingxing Chu
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China.
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Aizawa R, Ibayashi M, Mitsui J, Tsukamoto S. Lipid droplet formation is spatiotemporally regulated in oocytes during follicular development in mice. J Reprod Dev 2024; 70:18-24. [PMID: 38105003 PMCID: PMC10902640 DOI: 10.1262/jrd.2023-055] [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] [Indexed: 12/19/2023] Open
Abstract
Communication between oocytes and the surrounding granulosa cells during follicular development is essential for complete oocyte growth. Oocytes contain lipid droplets (LDs), organelles assembled in the endoplasmic reticulum (ER) that store neutral lipids, including triglycerides and cholesterol esters. Although the LD content varies among animals, LDs stored in oocytes have been shown to play an important role in oocyte maturation and preimplantation embryonic development. However, knowledge is lacking regarding how and when LDs are initially produced in developing oocytes within follicles. In the present study, we found that LDs appeared in mouse oocytes in a specific phase during follicular development. The emergence of LDs in intrafollicular oocytes was induced within a similar time window in vitro and in vivo. Fluorescence imaging and electron microscopy revealed that LDs emerging in oocytes during the early stages of follicular growth were in close proximity to the ER. Furthermore, fatty-acid-tracking experiments have revealed that exogenous fatty acids are rapidly incorporated into oocytes, and their uptake is regulated by the interaction between oocytes and granulosa cells, likely in part through transzonal projections. In summary, our results suggest that LD synthesis observed in growing oocytes is spatiotemporally regulated and that oocyte-granulosa cell contact may be involved in LD biosynthesis during follicular development.
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Affiliation(s)
- Ryutaro Aizawa
- Laboratory Animal and Genome Sciences Section, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
| | - Megumi Ibayashi
- Laboratory Animal and Genome Sciences Section, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
| | - Junichiro Mitsui
- Laboratory Animal and Genome Sciences Section, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
- Department of Comprehensive Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8519, Japan
| | - Satoshi Tsukamoto
- Laboratory Animal and Genome Sciences Section, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
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Ebrahimi M, Dattena M, Luciano AM, Succu S, Gadau SD, Mara L, Chessa F, Berlinguer F. In vitro culture of sheep early-antral follicles: Milestones, challenges and future perspectives. Theriogenology 2024; 213:114-123. [PMID: 37839290 DOI: 10.1016/j.theriogenology.2023.09.025] [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: 06/03/2023] [Revised: 08/05/2023] [Accepted: 09/29/2023] [Indexed: 10/17/2023]
Abstract
Early antral follicles (EAFs) represent the transitional stage between pre-antral and antral follicles, containing oocytes that have completed most of their growth phase. Therefore, they offer an easily exploitable reserve for producing mature oocytes and preserving genetic resources, given their higher abundance compared to antral follicles (AFs) and shorter culture period than other pre-antral follicles (PAFs). Despite these advantages, the culture of EAFs remains challenging, and the success rates of in vitro embryo production (IVEP) from EAF-derived oocytes are still far below the standard achieved with fully grown oocytes in ruminant species. The difficulty is related to developing suitable in vitro culture systems tailored with nutrients, growth factors, and other signaling molecules to support oocyte growth. In this review, we focus on the in vitro development of sheep EAFs to provide an informative reference to current research progress. We also summarize the basic aspect of folliculogenesis in sheep and the main achievements and limitations of the current methods for EAF isolation, in vitro culture systems, and medium supplementation. Finally, we highlight future perspectives and challenges for improving EAF culture outcomes.
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Affiliation(s)
- Mohammadreza Ebrahimi
- Department of Veterinary Medicine, University of Sassari, Via Vienna 2, Sassari, Italy; Department of Animal Science, Agricultural Research Agency of Sardinia, 07100, Sassari, Italy.
| | - Maria Dattena
- Department of Animal Science, Agricultural Research Agency of Sardinia, 07100, Sassari, Italy
| | - Alberto Maria Luciano
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell'Università, 6, 26900, Lodi, Italy
| | - Sara Succu
- Department of Veterinary Medicine, University of Sassari, Via Vienna 2, Sassari, Italy
| | - Sergio Domenico Gadau
- Department of Veterinary Medicine, University of Sassari, Via Vienna 2, Sassari, Italy
| | - Laura Mara
- Department of Animal Science, Agricultural Research Agency of Sardinia, 07100, Sassari, Italy
| | - Fabrizio Chessa
- Department of Animal Science, Agricultural Research Agency of Sardinia, 07100, Sassari, Italy
| | - Fiammetta Berlinguer
- Department of Veterinary Medicine, University of Sassari, Via Vienna 2, Sassari, Italy
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Ferreira AF, Soares M, Almeida-Santos T, Ramalho-Santos J, Sousa AP. Aging and oocyte competence: A molecular cell perspective. WIREs Mech Dis 2023; 15:e1613. [PMID: 37248206 DOI: 10.1002/wsbm.1613] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 12/30/2022] [Accepted: 04/19/2023] [Indexed: 05/31/2023]
Abstract
Follicular microenvironment is paramount in the acquisition of oocyte competence, which is dependent on two interconnected and interdependent processes: nuclear and cytoplasmic maturation. Extensive research conducted in human and model systems has provided evidence that those processes are disturbed with female aging. In fact, advanced maternal age (AMA) is associated with a lower chance of pregnancy and live birth, explained by the age-related decline in oocyte quality/competence. This decline has largely been attributed to mitochondria, essential for oocyte maturation, fertilization, and embryo development; with mitochondrial dysfunction leading to oxidative stress, responsible for nuclear and mitochondrial damage, suboptimal intracellular energy levels, calcium disturbance, and meiotic spindle alterations, that may result in oocyte aneuploidy. Nuclear-related mechanisms that justify increased oocyte aneuploidy include deoxyribonucleic acid (DNA) damage, loss of chromosomal cohesion, spindle assembly checkpoint dysfunction, meiotic recombination errors, and telomere attrition. On the other hand, age-dependent cytoplasmic maturation failure is related to mitochondrial dysfunction, altered mitochondrial biogenesis, altered mitochondrial morphology, distribution, activity, and dynamics, dysmorphic smooth endoplasmic reticulum and calcium disturbance, and alterations in the cytoskeleton. Furthermore, reproductive somatic cells also experience the effects of aging, including mitochondrial dysfunction and DNA damage, compromising the crosstalk between granulosa/cumulus cells and oocytes, also affected by a loss of gap junctions. Old oocytes seem therefore to mature in an altered microenvironment, with changes in metabolites, ribonucleic acid (RNA), proteins, and lipids. Overall, understanding the mechanisms implicated in the loss of oocyte quality will allow the establishment of emerging biomarkers and potential therapeutic anti-aging strategies. This article is categorized under: Reproductive System Diseases > Molecular and Cellular Physiology.
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Affiliation(s)
- Ana Filipa Ferreira
- Reproductive Medicine Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- Faculty of Medicine, Azinhaga de Santa Comba, University of Coimbra, Coimbra, Portugal
- CNC-Center for Neuroscience and Cell Biology, CIBB, University of Coimbra, Coimbra, Portugal
| | - Maria Soares
- CNC-Center for Neuroscience and Cell Biology, CIBB, University of Coimbra, Coimbra, Portugal
- PhD Programme in Experimental Biology and Biomedicine (PDBEB), Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra, Portugal
| | - Teresa Almeida-Santos
- Reproductive Medicine Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- Faculty of Medicine, Azinhaga de Santa Comba, University of Coimbra, Coimbra, Portugal
- CNC-Center for Neuroscience and Cell Biology, CIBB, University of Coimbra, Coimbra, Portugal
| | - João Ramalho-Santos
- CNC-Center for Neuroscience and Cell Biology, CIBB, University of Coimbra, Coimbra, Portugal
- Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal
| | - Ana Paula Sousa
- Reproductive Medicine Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- CNC-Center for Neuroscience and Cell Biology, CIBB, University of Coimbra, Coimbra, Portugal
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Isolation of Extracellular Vesicles from Human Follicular Fluid: Size-Exclusion Chromatography versus Ultracentrifugation. Biomolecules 2023; 13:biom13020278. [PMID: 36830647 PMCID: PMC9953485 DOI: 10.3390/biom13020278] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/23/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Follicular fluid (FF) is the microenvironment where a growing oocyte develops. Intrafollicular communication ensures oocyte competence and is carried out through paracrine signaling, the exchange of molecules via gap junctions, and the trafficking of extracellular vesicles (EVs). The study of FF-derived EVs is important for both translational and fundamental research in the female reproductive field. This study aimed to compare the efficacy and purity of two EV isolation methods: size-exclusion chromatography (SEC) and ultracentrifugation (UC). EVs isolated using SEC and UC were compared regarding their size and concentration using dynamic light scattering (DLS) and nanoparticle tracking analysis (NTA); protein contamination was assessed with microBCA; specific EV markers were detected with Western blot, and EV morphology was studied with transmission electron microscopy (TEM). Our results show that although both techniques isolated small EVs, a significantly increased yield in particle number was clear with UC compared with SEC. On the other hand, SEC generated purer EVs with fewer protein contaminants and aggregates. In conclusion, the selection of the most suited approach to isolate EVs must be conducted considering the degree of recovery, purity, and downstream application of the isolated EVs.
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Distribution of tetraspanins in bovine ovarian tissue and fresh/vitrified oocytes. Histochem Cell Biol 2023; 159:163-183. [PMID: 36242635 PMCID: PMC9922244 DOI: 10.1007/s00418-022-02155-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/16/2022] [Indexed: 11/04/2022]
Abstract
Tetraspanin proteins are mostly known as organizers of molecular complexes on cell membranes, widely expressed on the surface of most nucleated cells. Although tetraspanins participate in many physiological processes of mammals, including reproduction, their relevance to the processes of folliculogenesis and oogenesis has not yet been fully elucidated. We bring new information regarding the distribution of tetraspanins CD9, CD81, CD151, CD82, and CD63 at different stages of follicular development in cattle. The found distribution of tetraspanin CD9, CD63, and integrin alpha V in similar areas of ovarian tissue outlined their possible cooperation. We also describe yet-unknown distribution patterns of CD151, CD82, and CD63 on immature and mature bovine oocytes. The unique localization of tetraspanins CD63 and CD82 in the zona pellucida of bovine oocytes suggested their involvement in transzonal projections. Furthermore, we present an unchanged distribution pattern of the studied tetraspanins in vitrified mature bovine oocytes. The immunofluorescent analysis was supplemented by in silico data addressing tetraspanins expression in the ovarian cells and oocytes across several species. The obtained results suggest that in the study of the oocyte development and potentially the fertilization process of cattle, the role of tetraspanins and integrins should also be taken into account.
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Ajafar MH, Kadhim AH, Al-Thuwaini TM, Al-Shuhaib MBS, Hussein TH. Dr Association of bone morphogenetic protein 15 and growth differentiation factor 9 with litter size in livestock: a review study. ACTA SCIENTIARUM: ANIMAL SCIENCES 2022. [DOI: 10.4025/actascianimsci.v45i1.57927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
. Litter size is one of the crucial factors in livestock production and is of high economic value, which is affected by ovulation rate, hormones, and growth factors. Growth factors play a multifaceted role in reproductive physiology. This review aims to investigate the association of bone morphogenetic protein 15 (BMP15) and growth differentiation factor 9 (GDF9) with litter size in livestock. The transforming growth factor β (TGF- β) superfamily includes more than 34 members; GDF9 and BMP15 are among the most significant factors for regulating fertility and litter size in most livestock species. Ovarian follicles release BMP15 and GDF9 that are involved in the maturation of primary follicles into the basal form, proliferation of granulosa and theca cells, steroidogenesis, ovulation, and formation of the corpus luteum. Besides, these factors are highly expressed in oocytes and are necessary for female fertility and multiple ovulation in several livestock species. Animals with two inactive copies of these factors are sterile, while those with one inactive copy are fertile. Thus, the present review provides valuable information on the association of BMP15 and GDF9 with litter size in livestock that can be used as biological markers of multiple ovulation or for improving fertility in livestock.
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Azevedo VAN, Barroso PAA, Vasconcelos EM, Costa FC, Assis EIT, Silva BR, Paulino LRM, Silva AWB, Donato MMA, Peixoto CA, Silva JRV, Souza ALP. Effects of Aloe vera extract on growth, viability, ultrastructure and expression of mRNA for antioxidant enzymes in bovine secondary follicles cultured in vitro. Anim Reprod Sci 2022; 247:107078. [PMID: 36179655 DOI: 10.1016/j.anireprosci.2022.107078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 07/01/2022] [Accepted: 09/21/2022] [Indexed: 11/24/2022]
Abstract
This study aimed to investigate the effects of Aloe vera extract on follicular growth, viability, ultrastructure, and mRNA levels for superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase 1 (GPX1) and peroxiredoxin 6 (PRDX6) in bovine secondary follicles cultured in vitro. To this end, secondary follicles were mechanically isolated from the ovarian cortex and cultured at 38.5 °C, with 5% CO2 in air, for 18 days in TCM-199+ alone or supplemented with 2.5%, 5.0%, 10.0% and 20.0% Aloe vera extract. Follicular growth, morphology and antrum formation were evaluated every 6 days, while ultrastructure was evaluated at the end of culture. Analysis of viability was performed by calcein-AM and ethidium homodimer-1, while mRNA levels for SOD, CAT, GPX1 and PRDX6 were evaluated by real-time PCR at the end of culture. The results show that follicles cultured with 2.5% Aloe vera had increased the rate of antrum formation, while 2.5% and 5.0% Aloe vera improved follicular viability rate. Follicles cultured with 2.5% and 10.0% Aloe vera increased the levels of mRNA for SOD and GPX1 respectively, but the levels of CAT were reduced in follicles cultured with 2.5%, 5.0%, 10.0% and 20.0%. Additionally, follicles cultured with 2.5% of Aloe vera had their ultrastructure well preserved, while those cultured with 5.0%, 10.0% and 20.0% exhibited increased oocyte vacuolization and damaged organelles. In conclusion, 2.5% Aloe vera increases antrum formation, viability and expression of mRNA for SOD in cultured secondary follicles, but higher concentrations of Aloe vera have negative effects on follicular ultrastructure.
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Affiliation(s)
- Venância A N Azevedo
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Sobral, CE, Brazil
| | - Pedro A A Barroso
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Sobral, CE, Brazil
| | - Erlândia M Vasconcelos
- Laboratory of Media Preparation and In vitro Production of Embryos, Federal University of Rio de Janeiro, RJ, Brazil
| | - Francisco C Costa
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Sobral, CE, Brazil
| | - Ernando I T Assis
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Sobral, CE, Brazil
| | - Bianca R Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Sobral, CE, Brazil
| | - Laís R M Paulino
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Sobral, CE, Brazil
| | - Anderson W B Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Sobral, CE, Brazil
| | - Mariana M A Donato
- Laboratory of Ultrastructure, CPqAM/FIOCRUZ, Federal University of Pernambuco, Recife, PE, Brazil
| | - Cristina A Peixoto
- Laboratory of Ultrastructure, CPqAM/FIOCRUZ, Federal University of Pernambuco, Recife, PE, Brazil
| | - José R V Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Sobral, CE, Brazil.
| | - Ana L P Souza
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Sobral, CE, Brazil
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Passos JRS, Guerreiro DD, Otávio KS, Dos Santos-Neto PC, Souza-Neves M, Cuadro F, Nuñez-Olivera R, Crispo M, Vasconcelos FR, Bezerra MJB, Silva RF, Lima LF, Figueiredo JR, Bustamante-Filho IC, Menchaca A, Moura AA. How in vitro maturation changes the proteome of ovine cumulus-oocyte complexes? Mol Reprod Dev 2022; 89:459-470. [PMID: 35901249 DOI: 10.1002/mrd.23638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 05/29/2022] [Accepted: 07/21/2022] [Indexed: 11/11/2022]
Abstract
The present study evaluated the effects of in vitro maturation (IVM) on the proteome of cumulus-oocyte complexes (COCs) from ewes. Extracted COC proteins were analyzed by LC-MS/MS. Differences in protein abundances (p < 0.05) and functional enrichments in immature versus in vitro-matured COCs were evaluated using bioinformatics tools. There were 2550 proteins identified in the COCs, with 89 and 87 proteins exclusive to immature and mature COCs, respectively. IVM caused downregulation of 84 and upregulation of 34 proteins. Major upregulated proteins in mature COCs were dopey_N domain-containing protein, structural maintenance of chromosomes protein, ubiquitin-like modifier-activating enzyme 2. Main downregulated proteins in mature COCs were immunoglobulin heavy constant mu, inter-alpha-trypsin inhibitor heavy chain 2, alpha-2-macroglobulin. Proteins exclusive to mature COCs and upregulated after IVM related to immune response, complement cascade, vesicle-mediated transport, cell cycle, and extracellular matrix organization. Proteins of immature COCs and downregulated after IVM were linked to metabolic processes, immune response, and complement cascade. KEGG pathways and miRNA-regulated genes attributed to downregulated and mature COC proteins related to complement and coagulation cascades, metabolism, humoral response, and B cell-mediated immunity. Thus, IVM influenced the ovine COC proteome. This knowledge supports the future development of efficient IVM protocols for Ovis aries.
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Affiliation(s)
- José Renato S Passos
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | - Denise D Guerreiro
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | - Kamila S Otávio
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | | | - Marcela Souza-Neves
- Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay
| | - Federico Cuadro
- Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay
| | | | - Martina Crispo
- Unidad de Biotecnología en Animales de Laboratorio, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Fábio R Vasconcelos
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | - Maria Julia B Bezerra
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
| | - Renato F Silva
- Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), Ceará State University, Fortaleza, Brazil
| | - Laritza F Lima
- Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), Ceará State University, Fortaleza, Brazil
| | - José Ricardo Figueiredo
- Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), Ceará State University, Fortaleza, Brazil
| | | | - Alejo Menchaca
- Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay.,Plataforma de Investigación en Salud Animal, Instituto Nacional de Investigación Agropecuaria, Montevideo, Uruguay
| | - Arlindo A Moura
- Laboratory of Animal Physiology, Department of Animal Science, Federal University of Ceará, Fortaleza, Brazil
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Marchais M, Gilbert I, Bastien A, Macaulay A, Robert C. Mammalian cumulus-oocyte complex communication: a dialog through long and short distance messaging. J Assist Reprod Genet 2022; 39:1011-1025. [PMID: 35499777 PMCID: PMC9107539 DOI: 10.1007/s10815-022-02438-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 02/13/2022] [Indexed: 12/13/2022] Open
Abstract
Communications are crucial to ovarian follicle development and to ovulation, and while both folliculogenesis and oogenesis are distinct processes, they share highly interdependent signaling pathways. Signals from distant organs such as the brain must be processed and compartments within the follicle have to be synchronized. The hypothalamic–pituitary–gonadal (HPG) axis relies on long-distance signalling analogous to wireless communication by which data is disseminated in the environment and cells equipped with the appropriate receptors receive and interpret the messages. In contrast, direct cell-to-cell transfer of molecules is a very targeted, short distance messaging system. Numerous signalling pathways have been identified and proven to be essential for the production of a developmentally competent egg. The development of the cumulus-oocyte complex relies largely on short distance communications or direct transfer type via extensions of corona radiata cells through the zona pellucida. The type of information transmitted through these transzonal projections is still largely uncharacterized. This review provides an overview of current understanding of the mechanisms by which the gamete receives and transmits information within the follicle. Moreover, it highlights the fact that in addition to the well-known systemic long-distance based communications from the HPG axis, these mechanisms acting more locally should also be considered as important targets for controlling/optimizing oocyte quality.
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Affiliation(s)
- Mathilde Marchais
- Département des sciences animales, Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Réseau Québécois en Reproduction (RQR), Pavillon Paul Comtois, Université Laval, Québec, QC, Canada
| | - Isabelle Gilbert
- Département des sciences animales, Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Réseau Québécois en Reproduction (RQR), Pavillon Paul Comtois, Université Laval, Québec, QC, Canada
| | - Alexandre Bastien
- Département des sciences animales, Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Réseau Québécois en Reproduction (RQR), Pavillon Paul Comtois, Université Laval, Québec, QC, Canada
| | - Angus Macaulay
- Département des sciences animales, Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Réseau Québécois en Reproduction (RQR), Pavillon Paul Comtois, Université Laval, Québec, QC, Canada
| | - Claude Robert
- Département des sciences animales, Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Réseau Québécois en Reproduction (RQR), Pavillon Paul Comtois, Université Laval, Québec, QC, Canada.
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12
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Marcelino RC, Cardoso RM, Domingues ELBC, Gonçalves RV, Lima GDA, Novaes RD. The emerging risk of microplastics and nanoplastics on the microstructure and function of reproductive organs in mammals: A systematic review of preclinical evidence. Life Sci 2022; 295:120404. [PMID: 35176278 DOI: 10.1016/j.lfs.2022.120404] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/29/2022] [Accepted: 02/10/2022] [Indexed: 01/31/2023]
Abstract
AIMS Plastic particles (PP) pollution is a global environmental concern. Although the reproductive toxicity of PP is primarily understood for invertebrates, the evidence for mammals is still fragmented. We used a systematic review framework to investigate the reproductive impact of microplastics and nanoplastics (MNP) on mammals. MATERIALS AND METHODS Research records were screened from Embase, Medline, Scopus and Web of Science. Twelve original papers were identified and reviewed. Immunological, oxidative and morphofunctional outcomes, and the risk of bias in all studies reviewed were analyzed. KEY FINDINGS These studies indicated that PP can accumulate in the gonads, triggering seminiferous degeneration, Sertoli cells death, blood-testis barrier disruption, sperm degeneration, malformation, reduced number and mobility, ovarian cysts, reduced follicular growth and granulosa cells death. Gonadal damage was associated with upregulation of prooxidant mediators (oxygen reactive species, lipid and DNA oxidation), cell death, proinflammatory molecular pathways and cytokines, as well as inhibition of enzymatic and non-enzymatic antioxidant defense mechanisms. Spermatogenesis, folliculogenesis, testosterone, progesterone and estrogen levels were also impaired in PP-treated animals, which were potentially associated with down-regulation of molecules involved in germ cells microstructural organization (occludin, N-cadherin, β-catenin and connexin 43) and steroidogenesis, such as hydroxysteroid dehydrogenases, steroidogenic acute regulatory proteins, follicle stimulating and luteinizing hormones. Selection, performance and detection bias were the main limitations identified. SIGNIFICANCE Current evidence indicates that PP can induce dose-dependent microstructural and functional gonadal damage, which is orchestrated by pro-oxidant and pro-inflammatory mechanisms that disrupt genes, molecular effectors, and hormones that control spermatogenesis and folliculogenesis.
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Affiliation(s)
- Rodolfo C Marcelino
- Laboratório de Modelagem Molecular e Simulação Computacional, Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas 37130-001, Minas Gerais, Brazil
| | - Ronan M Cardoso
- Programa de Pós-Graduação em Biociências Aplicadas à Saúde, Universidade Federal de Alfenas, Alfenas 37130-001, Minas Gerais, Brazil
| | - Elisa L B C Domingues
- Programa de Pós-Graduação em Biociências Aplicadas à Saúde, Universidade Federal de Alfenas, Alfenas 37130-001, Minas Gerais, Brazil
| | - Reggiani V Gonçalves
- Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa 36570-000, Minas Gerais, Brazil
| | - Graziela D A Lima
- Programa de Pós-Graduação em Biociências Aplicadas à Saúde, Universidade Federal de Alfenas, Alfenas 37130-001, Minas Gerais, Brazil; Instituto de Ciências Biomédicas, Departamento de Biologia Estrutural, Universidade Federal de Alfenas, Alfenas 37130-001, Minas Gerais, Brazil
| | - Rômulo D Novaes
- Programa de Pós-Graduação em Biociências Aplicadas à Saúde, Universidade Federal de Alfenas, Alfenas 37130-001, Minas Gerais, Brazil; Instituto de Ciências Biomédicas, Departamento de Biologia Estrutural, Universidade Federal de Alfenas, Alfenas 37130-001, Minas Gerais, Brazil.
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13
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IMD/ADM2 operates as a secretory factor that controls cumulus-oocyte complexes (COCs) conformation for oocytes in vitro maturation. In Vitro Cell Dev Biol Anim 2022; 58:149-168. [PMID: 35102467 DOI: 10.1007/s11626-022-00647-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/28/2021] [Indexed: 12/13/2022]
Abstract
During in vitro maturation (IVM), the compact structure of cumulus-oocyte complexes (COCs) is vital for oocyte competence acquisition. Intermedin/Adrenomedullin-2 (IMD/ADM2) binds to the receptor RAMP (1, 2, or 3):CLR. Recently, it was demonstrated that IMD/ADM2 stimulates oocyte competence and improves bovine embryo quality. Therefore, this study aimed to examine the IMD/ADM2 as a secretory factor controlling COCs conformation for oocyte maturation. The results showed that traditional M-CDM medium induced in COCs the Imd/Adm2 gene expression during IVM and produced IMD/ADM2 peptide secretion. Furthermore, after IVM, in the oocytes, the expression of ramps (1, 2, or 3) and clr was demolished, and RAMPs and CLR proteins were decreased, with a negative Pearson correlation. These results suggest that RAMPs and CLR are synthesized and stored during oocyte maturation. Supplementing the M-CDM with α-RAMP1 or α-IMD/ADM2 antibodies elicits a negative effect (P < 0.05) in COCs compaction. Blocking the IMD/ADM2 signaling pathway with any α-RAMPs or α-CLR antibodies produces a similar lower yield of oocytes in metaphase II (P > 0.05) but was lower than control culture medium (P < 0.05). In conclusion, when COCs are cultured with M-CDM, the IMD/ADM2 becomes expressed and secreted. In turn, it acts as a ligand preferentially to RAMP1:CLR or RAMP3:CLR, present in cumulus cells and oocytes. Sequentially, COCs compact structure is conformed to promote an adequate bidirectional communication that conduces the oocytes' maturation.
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14
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Roos K, Rooda I, Keif RS, Liivrand M, Smolander OP, Salumets A, Velthut-Meikas A. Single-cell RNA-seq analysis and cell-cluster deconvolution of the human preovulatory follicular fluid cells provide insights into the pathophysiology of ovarian hyporesponse. Front Endocrinol (Lausanne) 2022; 13:945347. [PMID: 36339426 PMCID: PMC9635625 DOI: 10.3389/fendo.2022.945347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 09/22/2022] [Indexed: 11/13/2022] Open
Abstract
Reduction in responsiveness to gonadotropins or hyporesponsiveness may lead to the failure of in vitro fertilization (IVF), due to a low number of retrieved oocytes. The ovarian sensitivity index (OSI) is used to reflect the ovarian responsiveness to gonadotropin stimulation before IVF. Although introduced to clinical practice already years ago, its usefulness to predict clinical outcomes requires further research. Nevertheless, pathophysiological mechanisms of ovarian hyporesponse, along with advanced maternal age and in younger women, have not been fully elucidated. Follicles consist of multiple cell types responsible for a repertoire of biological processes including responding to pituitary gonadotropins necessary for follicle growth and oocyte maturation as well as ovulation. Encouraging evidence suggests that hyporesponse could be influenced by many contributing factors, therefore, investigating the variability of ovarian follicular cell types and their gene expression in hyporesponders is highly informative for increasing their prognosis for IVF live birth. Due to advancements in single-cell analysis technologies, the role of somatic cell populations in the development of infertility of ovarian etiology can be clarified. Here, somatic cells were collected from the fluid of preovulatory ovarian follicles of patients undergoing IVF, and RNA-seq was performed to study the associations between OSI and gene expression. We identified 12 molecular pathways differentially regulated between hypo- and normoresponder patient groups (FDR<0.05) from which extracellular matrix organization, post-translational protein phosphorylation, and regulation of Insulin-like Growth Factor (IGF) transport and uptake by IGF Binding Proteins were regulated age-independently. We then generated single-cell RNA-seq data from matching follicles revealing 14 distinct cell clusters. Using cell cluster-specific deconvolution from the bulk RNA-seq data of 18 IVF patients we integrated the datasets as a novel approach and discovered that the abundance of three cell clusters significantly varied between hypo- and normoresponder groups suggesting their role in contributing to the deviations from normal ovarian response to gonadotropin stimulation. Our work uncovers new information regarding the differences in the follicular gene expression between hypo- and normoresponders. In addition, the current study fills the gap in understanding the inter-patient variability of cell types in human preovulatory follicles, as revealed by single-cell analysis of follicular fluid cells.
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Affiliation(s)
- Kristine Roos
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
- Nova Vita Clinic AS, Tallinn, Estonia
| | - Ilmatar Rooda
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
- Division of Obstetrics and Gynecology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Robyn-Stefany Keif
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
| | - Maria Liivrand
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
| | - Olli-Pekka Smolander
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
| | - Andres Salumets
- Division of Obstetrics and Gynecology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
- Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
- Competence Centre on Health Technologies, Tartu, Estonia
| | - Agne Velthut-Meikas
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
- *Correspondence: Agne Velthut-Meikas,
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15
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Cantanhêde LF, Santos-Silva CT, Moura MT, Ferreira-Silva JC, Oliveira JMB, Gonçalves DNA, Teixeira ÁAC, Wanderley-Teixeira V, Oliveira MAL. Follicle-stimulating hormone mediates the consumption of serum-derived glycogen by bovine cumulus-oocyte complexes during in vitro maturation. Vet World 2021; 14:2512-2517. [PMID: 34840472 PMCID: PMC8613776 DOI: 10.14202/vetworld.2021.2512-2517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 08/23/2021] [Indexed: 11/19/2022] Open
Abstract
Background and Aim: Oocyte in vitro maturation (IVM) is an appealing approach for several assisted reproductive technologies and dissecting oocyte maturation. Nonetheless, IVM leads to lower developmental competence and usually relies on undefined, serum-containing media. Therefore, biochemical profiling aimed to explore fluctuations in IVM media content during the acquisition of oocyte developmental competence. Materials and Methods: Bovine cumulus-oocyte complexes (COCs) underwent IVM in TCM199 medium with Earle’s salts, supplemented with 2.0 mM L-glutamine, 10% fetal bovine serum, antibiotics, and 0.05 IU/mL porcine follicle-stimulating hormone (FSH+) or vehicle control (CTL) medium for 22 h. Results: FSH withdrawal (CTL) diminished several processes associated with the acquisition of oocyte developmental competence, such as reduced cumulus cell expansion, diminished estradiol synthesis (FSH+: 116.0±0.0 pg/mL vs. CTL: 97.6±18.0 pg/mL), and lower oocyte nuclear maturation rate (FSH+: 96.47% vs. CTL: 88.76%). Fresh media formulations (i.e., TCM199 with FSH or vehicle) were indistinguishable under biochemical profiling threshold conditions. Biochemical profiling showed similar total protein and lipid concentrations between groups. Further, total sugar concentrations diminished from fresh media to their post-IVM counterparts, albeit in an FSH-independent manner. Glycogen concentrations remained unaltered after IVM within CTL media, albeit were substantially lower after IVM under FSH+ conditions. Conclusion: FSH mediates the consumption of serum-derived glycogen by bovine COCs during IVM and implies that serum-free media should contain increased glucose concentrations to facilitate the acquisition of oocyte developmental competence.
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Affiliation(s)
- Ludymila F Cantanhêde
- Department of Veterinary Medicine, Federal Rural University of Pernambuco - UFRPE, Recife 52171900, Brazil
| | - Cristiane T Santos-Silva
- Department of Morphology and Animal Physiology, Federal Rural University of Pernambuco - UFRPE, Recife 52171900, Brazil
| | - Marcelo T Moura
- Department of Veterinary Medicine, Federal Rural University of Pernambuco - UFRPE, Recife 52171900, Brazil
| | - José C Ferreira-Silva
- Department of Veterinary Medicine, Federal Rural University of Pernambuco - UFRPE, Recife 52171900, Brazil
| | - Júnior M B Oliveira
- Department of Veterinary Medicine, Federal Rural University of Pernambuco - UFRPE, Recife 52171900, Brazil
| | - Daniel N A Gonçalves
- Department of Veterinary Medicine, Federal Rural University of Pernambuco - UFRPE, Recife 52171900, Brazil
| | - Álvaro A C Teixeira
- Department of Morphology and Animal Physiology, Federal Rural University of Pernambuco - UFRPE, Recife 52171900, Brazil
| | - Valéria Wanderley-Teixeira
- Department of Morphology and Animal Physiology, Federal Rural University of Pernambuco - UFRPE, Recife 52171900, Brazil
| | - Marcos A L Oliveira
- Department of Veterinary Medicine, Federal Rural University of Pernambuco - UFRPE, Recife 52171900, Brazil
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16
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Zhang Y, Zhou X, Zhu Y, Wang H, Xu J, Su Y. Current mechanisms of primordial follicle activation and new strategies for fertility preservation. Mol Hum Reprod 2021; 27:6128515. [PMID: 33538812 DOI: 10.1093/molehr/gaab005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/12/2021] [Indexed: 12/12/2022] Open
Abstract
Premature ovarian insufficiency (POI) is characterized by symptoms caused by ovarian dysfunction in patients aged <40 years. It is associated with a shortened reproductive lifespan. The only effective treatment for patients who are eager to become pregnant is IVF/Embryo Transfer (ET) using oocytes donated by young women. However, the use of the technique is constrained by the limited supply of oocytes and ethical issues. Some patients with POI still have some residual follicles in the ovarian cortex, which are not regulated by gonadotropin. These follicles are dormant. Therefore, activating dormant primordial follicles (PFs) to obtain high-quality oocytes for assisted reproductive technology may bring new hope for patients with POI. Therefore, this study aimed to explore the factors related to PF activation, such as the intercellular signaling network, the internal microenvironment of the ovary and the environment of the organism. In addition, we discussed new strategies for fertility preservation, such as in vitro activation and stem cell transplantation.
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Affiliation(s)
- Yan Zhang
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing 210004, China
| | - Xiaomei Zhou
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing 210004, China
| | - Ye Zhu
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing 210004, China
| | - Hanbin Wang
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing 210004, China
| | - Juan Xu
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing 210004, China
| | - Yiping Su
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing 210004, China
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17
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Gebremedhn S, Ali A, Gad A, Prochazka R, Tesfaye D. Extracellular Vesicles as Mediators of Environmental and Metabolic Stress Coping Mechanisms During Mammalian Follicular Development. Front Vet Sci 2020; 7:602043. [PMID: 33330723 PMCID: PMC7710682 DOI: 10.3389/fvets.2020.602043] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 10/26/2020] [Indexed: 12/13/2022] Open
Abstract
Extracellular vesicles are evolutionarily conserved nano-sized phospholipid membraned structures and released from virtually all types of cells into the extracellular space. Their ability to carry various molecular cargos (mRNA, miRNA, proteins, and lipids) from one cell to the other to exert functional impact on the target cells enables them to play a significant role in cell to cell communication during follicular development. As the molecular signals carried by extracellular vesicles reflect the physiological status of the cells of origin, they are expected to mediate any effect of environmental or metabolic stress on the follicualr cells and the growing oocyte. Recent studies have evidenced that reproductive cells exposed to various environmental stressors (heat and oxidative stress) released extracellular vesicles enriched with mRNA and miRNA associated with stress response mechanisms. Moreover, the metabolic status of post-calving cows could be well-reflected in the follicular extracellular vesicle's miRNA profile, which signified the potential role of extracellular cellular vesicle molecular signals in mediating the effect of metabolic stress on follicular and oocyte development. In the present review, the potential role of extracellular vesicles in mediating the effect of environmental and metabolic stress in various reproductive cells and oocytes are thoroughly discussed Moreover, considering the importance of extracellular vesicles in shuttling protective or rescuing molecular signals during stress, their potential usage as means of targeted delivery of molecules to mitigate the effect of stress on oocytes are addressed as the focus of future research.
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Affiliation(s)
- Samuel Gebremedhn
- Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, United States.,Department of Animal, Rangeland and Wildlife Sciences, Mekelle University, Mekelle, Ethiopia
| | - Asghar Ali
- Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, United States
| | - Ahmed Gad
- Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Liběchov, Czechia.,Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt
| | - Radek Prochazka
- Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Liběchov, Czechia
| | - Dawit Tesfaye
- Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, United States.,Department of Animal, Rangeland and Wildlife Sciences, Mekelle University, Mekelle, Ethiopia
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18
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Dissimilar effects of curcumin on human granulosa cells: Beyond its anti-oxidative role. Reprod Toxicol 2020; 95:51-58. [DOI: 10.1016/j.reprotox.2020.04.069] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/26/2020] [Accepted: 04/08/2020] [Indexed: 11/24/2022]
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19
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Zhou S, Xi Y, Chen Y, Zhang Z, Wu C, Yan W, Luo A, Wu T, Zhang J, Wu M, Dai J, Shen W, Zhang F, Ding W, Wang S. Ovarian Dysfunction Induced by Chronic Whole-Body PM2.5 Exposure. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2000845. [PMID: 32686359 DOI: 10.1002/smll.202000845] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 05/29/2020] [Indexed: 06/11/2023]
Abstract
Fine particulate matter (PM2.5) pollution arouses public health concerns over the world. Increasing epidemiologic evidence suggests that exposure to ambient airborne PM2.5 increases the risk of female infertility. However, relatively few studies have systematically explored the harmful effect of chronic PM2.5 exposure on ovarian function and the underlying mechanisms. In this study, female C57BL/6J mice are exposed to filtered air or urban airborne PM2.5 for 4 months through a whole-body exposure system. It is found that PM2.5 exposure significantly caused the alteration of estrus cycles, reproductivity, hormone levels, and ovarian reserve. The granulosa cell apoptosis via the mitochondria dependent pathway contributes to the follicle atresia. With RNA-sequencing technique, the differentially expressed genes induced by PM2.5 exposure are mainly enriched in ovarian steroidogenesis, reactive oxygen species and oxidative phosphorylation pathways. Furthermore, it is found that increased PM2.5 profoundly exacerbated ovarian oxidative stress and inflammation in mice through the NF-κB/IL-6 signaling pathway. Notably, dietary polydatin (PD) supplement has protective effect in mice against PM2.5-induced ovarian dysfunction.These striking findings demonstrate that PM2.5 and/or air pollution is a critical factor for ovarian dysfunction through mitochondria-dependent and NF-κB/IL-6-mediated pathway, and PD may serve as a pharmaceutic candidate for air pollution-associated ovarian dysfunction.
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Affiliation(s)
- Su Zhou
- Department of Obstetrics and Gynecology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Yueyue Xi
- Department of Obstetrics and Gynecology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Yingying Chen
- Department of Obstetrics and Gynecology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Zezhong Zhang
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Chunyan Wu
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Wei Yan
- Department of Obstetrics and Gynecology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Aiyue Luo
- Department of Obstetrics and Gynecology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Tong Wu
- Department of Obstetrics and Gynecology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Jinjin Zhang
- Department of Obstetrics and Gynecology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Meng Wu
- Department of Obstetrics and Gynecology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Jun Dai
- Department of Obstetrics and Gynecology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Wei Shen
- Department of Obstetrics and Gynecology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Fang Zhang
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Wenjun Ding
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Shixuan Wang
- Department of Obstetrics and Gynecology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
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20
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Machado LC, Orlandin JR, Karam RG, Rós FA, Martins DDS, Costa GDM, Ambrósio CE. Morphology of male and female reproductive tract of the ocelot ( Leopardus pardalis). Anim Reprod 2020; 17:e20200010. [PMID: 32714460 PMCID: PMC7375876 DOI: 10.1590/1984-3143-ar2020-0010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The Ocelot (Leopardus pardalis) is the largest species of this genus, despite having broad distribution in the Americas; it is included in the main list of endangered species. Their conservation is widely studied, but there is a lack of studies about their morphology. In order to contribute to the knowledge of its reproductive system, five male and female ocelots were examined macro- and microscopically by histological techniques. Macroscopic analysis of the male reproductive system revealed presence of prostate and bulbourethral gland located caudally to the urinary bladder and a penis with small spicules. Microscopically, the testes were encased by the tunica albuginea and divided it into lobules with 5-10 tubules per lobe. In females, macroscopic analysis demonstrated two ovaries position dorsally in the sublumbar region and caudal to the kidneys. The bicornuate uterus is composed by uterine horns (12 to 14 cm in length), which travels from the ovaries in a caudal direction to form a small uterine body (4 cm in length). The ovary analysis revealed, in longitudinal section, medullary region composed of loose connective tissue, a stroma rich in blood vessels, and an external parenchymal region surrounded by a tunica albuginea. The results of the study confirmed the similarity between ocelot's reproductive system as domestic cat's ones and showing for the first time the complete morphological tool to highlight these organs and tissue in this male and female endangered wild felid specie. The present study open venue for other researchers to consider morphological and preservationist features and aimed to help at long-term conservation of wild felines.
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Affiliation(s)
- Luciana Cristina Machado
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brasil
| | - Jéssica Rodrigues Orlandin
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brasil
| | - Rafael Garcia Karam
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brasil
| | - Felipe Augusto Rós
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Daniele Dos Santos Martins
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brasil
| | - Gerlane de Medeiros Costa
- Laboratório de Zoologia e Morfologia Animal, Universidade do Estado do Mato Grosso, Alta Floresta, MT, Brasil
| | - Carlos Eduardo Ambrósio
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brasil
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De Los Reyes M, Palomino J, Gallegos C, Espinoza R, Dettleff P, Peralta OA, Parraguez VH, Ramirez G. Gene and protein expression of connexins 37 and 43 in cumulus-oocytes complexes throughout the canine oestrous cycle. Reprod Fertil Dev 2020; 32:976-987. [PMID: 32693910 DOI: 10.1071/rd20126] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 05/30/2020] [Indexed: 12/17/2022] Open
Abstract
The aim of this study was to evaluate the expression of connexin (Cx) 37 and Cx43 in canine cumulus-oocyte complexes (COCs) during the oestrous cycle. Cx localisation was analysed by immunohistochemistry and immunofluorescence, whereas protein and gene expression was evaluated by western blotting and quantitative polymerase chain reaction respectively; comparisons were made using analysis of variance. Both Cx37 and Cx43 were expressed in all follicular stages; Cx43 was identified in cumulus cells and Cx37 was identified in cumulus cells, zonae pellucida and oocytes. Immunofluorescence analyses showed that Cx37 remained unchanged during the preovulatory stage but decreased after ovulation, whereas Cx43 remained unchanged before and after ovulation. Cx43 transcripts increased (P<0.05) during anoestrus and dioestrus in medium-sized follicles but remained unaltered during the pro-oestrus and antral stages during oestrus, before and after ovulation. Cx37 mRNA levels decreased in ovulated COCs (P<0.05). The highest levels of Cx37 protein (P<0.05) were detected in the preantral stage during anoestrus. In contrast, strong Cx43 signals were detected in oestrus and in medium-sized antral follicles in dioestrus (P<0.05). Overall, we demonstrated that Cx37 and Cx43 exhibit different expression patterns, suggesting specific roles throughout growth. Maintenance of Cx expression before ovulation indicates the involvement of Cx37 and Cx43 in the prolonged meiotic arrest.
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Affiliation(s)
- Monica De Los Reyes
- Laboratory of Animal Reproduction, Department of Animal Production Faculty of Veterinary Sciences, University of Chile, Casilla 2, Correo 15, La Granja, Santiago, Chile; and Corresponding author.
| | - Jaime Palomino
- Laboratory of Animal Reproduction, Department of Animal Production Faculty of Veterinary Sciences, University of Chile, Casilla 2, Correo 15, La Granja, Santiago, Chile
| | - Carola Gallegos
- Laboratory of Animal Reproduction, Department of Animal Production Faculty of Veterinary Sciences, University of Chile, Casilla 2, Correo 15, La Granja, Santiago, Chile
| | - Roberto Espinoza
- Laboratory of Animal Reproduction, Department of Animal Production Faculty of Veterinary Sciences, University of Chile, Casilla 2, Correo 15, La Granja, Santiago, Chile
| | - Phillipe Dettleff
- Laboratory Inviogen, Department of Biological Sciences, Faculty of Veterinary Sciences, University of Chile, Casilla 2, Correo 15, La Granja, Santiago, Chile
| | - Oscar A Peralta
- Laboratory of Animal Reproduction, Department of Animal Production Faculty of Veterinary Sciences, University of Chile, Casilla 2, Correo 15, La Granja, Santiago, Chile
| | - Victor H Parraguez
- Laboratory of Animal Physiology, Department of Biological Sciences, Faculty of Veterinary Sciences, University of Chile, Casilla 2, Correo 15, La Granja, Santiago, Chile
| | - George Ramirez
- Laboratory of Animal Reproduction, Department of Animal Production Faculty of Veterinary Sciences, University of Chile, Casilla 2, Correo 15, La Granja, Santiago, Chile
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