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Liu Y, Xie F, Zhang H, Ye H, Wen H, Qiu M, Ding Y, Zheng X, Yin Z, Zhang X. Preliminary construction of non-coding RNAs and ceRNA regulatory networks mediated by exosomes in porcine follicular fluid. Genomics 2024; 116:110920. [PMID: 39151553 DOI: 10.1016/j.ygeno.2024.110920] [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: 05/23/2024] [Revised: 07/19/2024] [Accepted: 08/12/2024] [Indexed: 08/19/2024]
Abstract
BACKGROUND Follicles are fundamental units of the ovary, regulated intricately during development. Exosomes and ovarian granulosa cells (OGCs) play pivotal roles in follicular development, yet the regulatory mechanisms governing exosomes remain elusive. RESULTS High-throughput sequencing was employed to evaluate the complete transcript expression profiles of six samples (three porcine ovarian granulosa cells-exosome co-culture samples (GCE) and three porcine ovarian granulosa cells (POGCs) samples). Differential expression analysis revealed 924 lncRNAs, 35 circRNAs, 49 miRNAs, and 9823 mRNAs in the GCE group. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses indicated enrichment of differentially expressed transcripts in pathways related to cell proliferation and apoptosis. Furthermore, a ceRNA regulatory network comprising 43 lncRNAs, 6 circRNAs, 11 miRNAs, and 126 mRNAs was constructed based on intergene co-expression correlations. Seven miRNAs associated with cell proliferation and apoptosis regulation were identified within this network, encompassing 92 subnet pairs as candidate genes for further exploration of exosome regulatory mechanisms. Additionally, preliminary verification at the cellular level demonstrated that exosomal miR-200b enhances the viability of POGCs. CONCLUSIONS Transcriptome analysis unveiled a pivotal candidate ceRNA network potentially implicated in exosome-mediated regulation of granulosa cell proliferation and apoptosis, thereby influencing porcine follicular development. These findings offer insights into the molecular mechanisms of follicular fluid exosome regulation, encompassing both coding and non-coding RNA perspectives.
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Affiliation(s)
- Yangguang Liu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei 230036, China
| | - Fan Xie
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei 230036, China
| | - Huibin Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei 230036, China
| | - Haibo Ye
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei 230036, China
| | - Haoyu Wen
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei 230036, China
| | - Mengyao Qiu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei 230036, China.
| | - Yueyun Ding
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei 230036, China
| | - Xianrui Zheng
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei 230036, China
| | - Zongjun Yin
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei 230036, China.
| | - Xiaodong Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei 230036, China.
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2
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Aoki S, Inoue Y, Hara S, Itou J, Shirasuna K, Iwata H. microRNAs associated with the quality of follicular fluids affect oocyte and early embryonic development. Reprod Med Biol 2024; 23:e12559. [PMID: 38239486 PMCID: PMC10795439 DOI: 10.1002/rmb2.12559] [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: 10/21/2023] [Revised: 12/10/2023] [Accepted: 12/26/2023] [Indexed: 01/22/2024] Open
Abstract
Purpose Oocyte and embryo quality differs significantly among individuals. Follicular fluid (FF) is a solo environment of oocyte maturation and may flux into the oviduct. Supplementation of in vitro maturation (IVM) and culture (IVC) medium with extracellular vesicles of FFs supports oocyte maturation and embryonic development. We addressed a hypothesis that miRNA profiles in FFs are crucial background of oocyte maturation and embryonic development. Methods FFs were collected from the ovaries of individual cows, and the FFs were classified into Good or Poor FF based on the developmental rate to the blastocyst stage of enclosed oocytes. miRNAs associated with the Good FFs were explored using small RNA sequencing. In addition, FFs were classified using the concentration of Good-FF-associated miRNAs. These classified FFs or miRNA were added to the IVM or IVC mediums. Results Supplementation of IVM and IVC medium with Good FF improved embryonic development. Good FFs contained miR-151-3p and miR-425-5p at a high concentration compared with those in Poor FFs. FFs selected by the concentration of miR-151-3p and miR-425-5p improved oocyte maturation and embryonic development. Supplementation of IVM or IVC medium with either miR-151-3p or miR-425-5p improved embryonic development to the blastocyst stage. Conclusion miRNAs were associated with the Good FFs determined oocyte maturation and embryonic development.
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Affiliation(s)
- Sogo Aoki
- Department of Animal Science, Graduate School of AgricultureTokyo University of AgricultureAtsugi CityKanagawaJapan
| | - Yuki Inoue
- Department of Animal Science, Graduate School of AgricultureTokyo University of AgricultureAtsugi CityKanagawaJapan
| | - Shunsuke Hara
- Department of Animal Science, Graduate School of AgricultureTokyo University of AgricultureAtsugi CityKanagawaJapan
| | - Jun Itou
- Department of Animal Science, Graduate School of AgricultureTokyo University of AgricultureAtsugi CityKanagawaJapan
| | - Koumei Shirasuna
- Department of Animal Science, Graduate School of AgricultureTokyo University of AgricultureAtsugi CityKanagawaJapan
| | - Hisataka Iwata
- Department of Animal Science, Graduate School of AgricultureTokyo University of AgricultureAtsugi CityKanagawaJapan
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Han Y, Qu X, Chen X, Lv Y, Zhang Y, Jin Y. Effects of follicular fluid exosomes on in vitro maturation of porcine oocytes. Anim Biotechnol 2023; 34:2757-2765. [PMID: 36036234 DOI: 10.1080/10495398.2022.2114084] [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: 11/01/2022]
Abstract
Exosomes are related to effective communication between cells. In this study we aimed to investigate the effect of porcine follicular fluid exosomes (FF-Exo) on cumulus expansion, oocyte mitochondrial membrane potential, and maturation in in vitro culture. We used different concentrations of FF-Exo (Exo-0, Exo-1, Exo-10, Exo-20, and Exo-40) and added them to an oocyte maturation medium. Transmission electron microscopy (TEM), nanoparticle tracking analysis (NTA) and western blot (WB) showed that the isolated samples were exosomes. Immunofluorescence showed that exosomes could be taken up by cumulus cells. Compared with the Exo-0 group, there was no significant difference in oocyte maturation rate in the Exo-1 group (p > 0.05), while the Exo-10 group (p < 0.05), Exo-20 group (p < 0.01) and Exo-40 group (p < 0.01) significantly increased. The maturation rate of the Exo-20 and Exo-40 groups was the highest, and there was no significant difference between the two groups (p > 0.05). However, different concentrations of treatment could not effectively induce cumulus expansion and the results of JC1 showed that it had no significant effect on mitochondrial membrane potential (p > 0.05). In conclusion, the results suggest that porcine FF-Exo are involved in oocyte nuclear maturation.
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Affiliation(s)
- Yue Han
- Department of Animal Science, College of Agriculture, Yanbian University, Yanji, Jilin Province, China
| | - Xinglin Qu
- Department of Animal Science, College of Agriculture, Yanbian University, Yanji, Jilin Province, China
| | - Xuan Chen
- Department of Animal Science, College of Agriculture, Yanbian University, Yanji, Jilin Province, China
| | - Yanqiu Lv
- Department of Animal Science, College of Agriculture, Yanbian University, Yanji, Jilin Province, China
| | - Yuyang Zhang
- Department of Animal Science, College of Agriculture, Yanbian University, Yanji, Jilin Province, China
| | - Yi Jin
- Department of Animal Science, College of Agriculture, Yanbian University, Yanji, Jilin Province, China
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Zhu J, Xu Z, Wu P, Zeng C, Peng C, Zhou Y, Xue Q. MicroRNA-92a-3p Inhibits Cell Proliferation and Invasion by Regulating the Transcription Factor 21/Steroidogenic Factor 1 Axis in Endometriosis. Reprod Sci 2023; 30:2188-2197. [PMID: 36650372 PMCID: PMC10310800 DOI: 10.1007/s43032-021-00734-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 09/02/2021] [Indexed: 01/18/2023]
Abstract
Endometriosis (EMS) is an estrogen-dependent disease. However, little is known about the regulation of estrogen, a potential therapeutic target, in EMS, which remains very poorly managed in the clinic. We hypothesized that microRNAs (miRNAs) can be exploited therapeutically to regulate transcription factor 21 (TCF21) and steroidogenic factor-1 (SF-1) gene expression. In our study, paired eutopic and ectopic endometrial samples were obtained from women with EMS and processed by a standard protocol to obtain human endometrial stromal cells (EMs) for in vitro studies. We found that miR-92a-3p levels were decreased in ectopic endometrium and ectopic stromal cells (ESCs) compared with paired eutopic lesions. miR-92a-3p overexpression significantly suppressed the proliferation and migration of ESCs, whereas a decreased level of miR-92a-3p generated the opposite results. Next, we identified TCF21 as a candidate target gene of miR-92a-3p. In vitro cell experiments showed that miR-92a-3p negatively regulated the expression of TCF21 and its downstream target gene SF-1. Moreover, cell proliferation and invasion ability decreased after the silencing of SF-1 and increased after SF-1 overexpression. We also observed that silencing SF-1 while inhibiting miR-92a-3p partially blocked the increase in cell proliferation and invasion ability caused by miR-92a-3p knockdown while overexpressing both SF-1 and miR-92a-3p mitigated the impairment in cell proliferation and invasion ability caused by miR-92a-3p overexpression. Our results may provide a novel potential therapeutic target for the treatment of EMS.
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Affiliation(s)
- Jingwen Zhu
- Department of Obstetrics and Gynecology, Peking University First Hospital, No.1 Xi'anmen Street, Beijing, 100034, China
| | - Zijin Xu
- Department of Reproductive Medicine, Key Laboratory for Major Obstetric Diseases of Guangdong Province, and Key Laboratory for Reproduction and Genetics of Guangdong Higher Education Institutes, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Peili Wu
- Department of Obstetrics and Gynecology, Peking University First Hospital, No.1 Xi'anmen Street, Beijing, 100034, China
| | - Cheng Zeng
- Department of Obstetrics and Gynecology, Peking University First Hospital, No.1 Xi'anmen Street, Beijing, 100034, China
| | - Chao Peng
- Department of Obstetrics and Gynecology, Peking University First Hospital, No.1 Xi'anmen Street, Beijing, 100034, China
| | - Yingfang Zhou
- Department of Obstetrics and Gynecology, Peking University First Hospital, No.1 Xi'anmen Street, Beijing, 100034, China
| | - Qing Xue
- Department of Obstetrics and Gynecology, Peking University First Hospital, No.1 Xi'anmen Street, Beijing, 100034, China.
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Wang X, Wang L, Xiang W. Mechanisms of ovarian aging in women: a review. J Ovarian Res 2023; 16:67. [PMID: 37024976 PMCID: PMC10080932 DOI: 10.1186/s13048-023-01151-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 03/29/2023] [Indexed: 04/08/2023] Open
Abstract
Ovarian aging is a natural and physiological aging process characterized by loss of quantity and quality of oocyte or follicular pool. As it is generally accepted that women are born with a finite follicle pool that will go through constant decline without renewing, which, together with decreased oocyte quality, makes a severe situation for women who is of advanced age but desperate for a healthy baby. The aim of our review was to investigate mechanisms leading to ovarian aging by discussing both extra- and intra- ovarian factors and to identify genetic characteristics of ovarian aging. The mechanisms were identified as both extra-ovarian alternation of hypothalamic-pituitary-ovarian axis and intra-ovarian alternation of ovary itself, including telomere, mitochondria, oxidative stress, DNA damage, protein homeostasis, aneuploidy, apoptosis and autophagy. Moreover, here we reviewed related Genome-wide association studies (GWAS studies) from 2009 to 2021 and next generation sequencing (NGS) studies of primary ovarian insufficiency (POI) in order to describe genetic characteristics of ovarian aging. It is reasonable to wish more reliable anti-aging interventions for ovarian aging as the exploration of mechanisms and genetics being progressing.
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Affiliation(s)
- Xiangfei Wang
- Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Lingjuan Wang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wenpei Xiang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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6
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Guo XR, Ma Y, Ma ZM, Dai TS, Wei SH, Chu YK, Dan XG. Exosomes: The role in mammalian reproductive regulation and pregnancy-related diseases. Front Physiol 2023; 14:1056905. [PMID: 36969587 PMCID: PMC10036776 DOI: 10.3389/fphys.2023.1056905] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 03/01/2023] [Indexed: 03/12/2023] Open
Abstract
Exosomes are a kind of extracellular vesicles that are produced and secreted by different mammalian cells. They serve as cargo proteins and can transfer different kinds of biomolecules, including proteins, lipids, and nucleic acids, which consequently act on target cells to exert different biological effects. Recent years have witnessed a significant increase in the number of studies on exosomes due to the potential effects of exosomes in the diagnosis and treatment of cancers, neurodegenerative diseases, and immune disorders. Previous studies have demonstrated that exosomal contents, especially miRNAs, are implicated in numerous physiological processes such as reproduction, and are crucial regulators of mammalian reproduction and pregnancy-related diseases. Here, we describe the origin, composition, and intercellular communication of exosomes, and discuss their functions in follicular development, early embryonic development, embryonic implantation, male reproduction and development of pregnancy-related diseases in humans and animals. We believe this study will provide a foundation for revealing the mechanism of exosomes in regulating mammalian reproduction, and providing new approaches and ideas for the diagnosis and treatment of pregnancy-related diseases.
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Affiliation(s)
- Xing-Ru Guo
- School of Agriculture, Ningxia University, Yinchuan, Ningxia, China
| | - Yun Ma
- School of Agriculture, Ningxia University, Yinchuan, Ningxia, China
| | - Zi-Ming Ma
- School of Agriculture, Ningxia University, Yinchuan, Ningxia, China
| | - Tian-Shu Dai
- School of Agriculture, Ningxia University, Yinchuan, Ningxia, China
| | - Shi-Hao Wei
- School of Agriculture, Ningxia University, Yinchuan, Ningxia, China
| | - Yuan-Kui Chu
- Department of Laboratory Medicine, General Hospital of Ningxia Medical University, Ningxia Medical University, Yinchuan, China
- *Correspondence: Yuan-Kui Chu, ; Xin-Gang Dan,
| | - Xin-Gang Dan
- School of Agriculture, Ningxia University, Yinchuan, Ningxia, China
- *Correspondence: Yuan-Kui Chu, ; Xin-Gang Dan,
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7
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Extracellular vesicles-encapsulated microRNA in mammalian reproduction: A review. Theriogenology 2023; 196:174-185. [PMID: 36423512 DOI: 10.1016/j.theriogenology.2022.11.022] [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: 08/12/2022] [Revised: 11/08/2022] [Accepted: 11/12/2022] [Indexed: 11/16/2022]
Abstract
Extracellular vesicles (EVs) are nanoscale cell-derived lipid vesicles that participate in cell-cell communication by delivering cargo, including mRNAs, proteins and non-coding RNAs, to recipient cells. MicroRNA (miRNA), a non-coding RNA typically 22 nucleotides long, is crucial for nearly all developmental and pathophysiological processes in mammals by regulating recipient cells gene expression. Infertility is a worldwide health issue that affects 10-15% of couples during their reproductive years. Although assisted reproductive technology (ART) gives infertility couples hope, the failure of ART is mainly unknown. It is well accepted that EVs-encapsulated miRNAs have a role in different reproductive processes, implying that these EVs-encapsulated miRNAs could optimize ART, improve reproductive rate, and treat infertility. As a result, in this review, we describe the present understanding of EVs-encapsulated miRNAs in reproduction regulation.
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8
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Fan W, Qi Y, Wang Y, Yan H, Li X, Zhang Y. Messenger roles of extracellular vesicles during fertilization of gametes, development and implantation: Recent advances. Front Cell Dev Biol 2023; 10:1079387. [PMID: 36684431 PMCID: PMC9849778 DOI: 10.3389/fcell.2022.1079387] [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: 10/25/2022] [Accepted: 12/16/2022] [Indexed: 01/07/2023] Open
Abstract
Extracellular vesicles (EVs) have become a research hotspot in recent years because they act as messengers between cells in the physiological and pathological processes of the human body. It can be produced by the follicle, prostate, embryo, uterus, and oviduct in the reproductive field and exists in the extracellular environment as follicular fluid, semen, uterine cavity fluid, and oviduct fluid. Because extracellular vesicles are more stable at transmitting information, it allows all cells involved in the physiological processes of embryo formation, development, and implantation to communicate with one another. Extracellular vesicles carried miRNAs and proteins as mail, and when the messenger delivers the mail to the recipient cell, the recipient cell undergoes a series of changes. Current research begins with intercepting and decoding the information carried by extracellular vesicles. This information may help us gain a better understanding of the secrets of reproduction, as well as assist reproductive technology as an emerging marker and treatment.
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Affiliation(s)
- Weisen Fan
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yinghua Qi
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yaqian Wang
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Huiting Yan
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xuan Li
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yingjie Zhang
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan, China,*Correspondence: Yingjie Zhang,
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9
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Paulino LRFM, de Assis EIT, Azevedo VAN, Silva BR, da Cunha EV, Silva JRV. Why Is It So Difficult To Have Competent Oocytes from In vitro Cultured Preantral Follicles? Reprod Sci 2022; 29:3321-3334. [PMID: 35084715 DOI: 10.1007/s43032-021-00840-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 12/28/2021] [Indexed: 12/14/2022]
Abstract
The developmental competence of oocytes is acquired gradually during follicular development, mainly through oocyte accumulation of RNA molecules and proteins that will be used during fertilization and early embryonic development. Several attempts to develop in vitro culture systems to support preantral follicle development up to maturation are reported in the literature, but oocyte competence has not yet been achieved in human and domestic animals. The difficulties to have fertilizable oocytes are related to thousands of mRNAs and proteins that need to be synthesized, long-term duration of follicular development, size of preovulatory follicles, composition of in vitro culture medium, and the need of multi-step culture systems. The development of a culture system that maintains bidirectional communication between the oocyte and granulosa cells and that meets the metabolic demands of each stage of follicle growth is the key to sustain an extended culture period. This review discusses the physiological and molecular mechanisms that determine acquisition of oocyte competence in vitro, like oocyte transcriptional activity, follicle and oocyte sizes, and length and regulation of follicular development in murine, human, and domestic animal species. The state of art of in vitro follicular development and the challenges to have complete follicular development in vitro are also highlighted.
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Affiliation(s)
- Laís R F M Paulino
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, Sobral, CE, CEP 62041-040, Brazil
| | - Ernando I T de Assis
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, Sobral, CE, CEP 62041-040, Brazil
| | - Venância A N Azevedo
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, Sobral, CE, CEP 62041-040, Brazil
| | - Bianca R Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, Sobral, CE, CEP 62041-040, Brazil
| | - Ellen V da Cunha
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, Sobral, CE, CEP 62041-040, Brazil
| | - José R V Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, Sobral, CE, CEP 62041-040, Brazil.
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10
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Nagata S, Inoue Y, Sato T, Tanaka K, Shinozawa A, Shirasuna K, Iwata H. Age-associated changes in miRNA profile of bovine follicular fluid. Reproduction 2022; 164:195-206. [PMID: 35980236 DOI: 10.1530/rep-22-0036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 08/18/2022] [Indexed: 11/08/2022]
Abstract
In brief This study shows that ageing affects miRNA profiles in follicular fluid, and an miRNA that is highly abundant in the follicular fluid of young cows supports the growth of oocytes derived from early antral follicles. Abstract We examined age-associated changes in miRNA profiles in the follicular fluid (FF) of cows. The role of miR-19b, which is abundant in the FF of young cows, in in vitro growth of early antral follicles (EAFs)-derived oocytes was assessed. FF was collected from the antral follicles of young (20-40 months) and aged (>120 months) cows. The miRNA profiles were similar between the FF of both age groups, whereas the abundance of some miRNAs differed between these samples. The miRNA profiles in granulosa cells (GCs) and the spent culture medium of oocyte-GC complexes (OGCs) derived from EAFs were distinct. Some miRNA groups overlapped among the GCs, culture media, and FFs. miR-19b was highly abundant in the FF of young cows, GCs, and culture medium. The supplementation of OGC culture medium with miR-19b increased the diameter, acetylation levels, and fertilisation ability of the oocytes. To assess whether miR-19b was functional in the GCs, a dual-luciferase assay, suppression of target protein, and RNA-sequencing of the GCs followed by functional annotation of the differentially expressed genes (DEGs) were conducted. Functional annotation of the DEGs suggested that miR-19b influences genes associated with FoxO signalling, endocytosis, and NR3C1 in GCs. These results suggest that in FFs, ageing affects the abundance of miRNAs that have important roles in oocyte development.
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Affiliation(s)
- Shuta Nagata
- Tokyo University of Agriculture, Funako, Atsugi, Japan
| | - Yuki Inoue
- Tokyo University of Agriculture, Funako, Atsugi, Japan
| | - Takuya Sato
- Tokyo University of Agriculture, Funako, Atsugi, Japan
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11
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Shen Y, You Y, Zhu K, Fang C, Chang D, Yu X. Exosomes in the f ield of reproduction: A scientometric study and visualization analysis. Front Pharmacol 2022; 13:1001652. [PMID: 36210808 PMCID: PMC9537691 DOI: 10.3389/fphar.2022.1001652] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 09/12/2022] [Indexed: 11/13/2022] Open
Abstract
Background: The diagnostic capabilities of exosomes in the field of reproductive biomedicine have attracted much attention. The aim of this scientometric study was to statistically and qualitatively assess the knowledge structure, hot issues, and research trends of papers about exosomes in the field of reproduction using visualization methods.Methods: The Web of Science Core Collection was searched for studies on exosomes in the field of reproduction. We performed bibliometric and visual analyses using VOSviewer, CiteSpace, and Microsoft Excel.Results: After database search, 1,011 articles were included, with number of studies being published every year continually increasing. These publications came from 61 nations or regions, with the US having the highest number. The University of Queensland was the main institution in which the research was conducted. The journal Placenta contained the highest number studies. There were 5,247 authors in total. Carlos Salomon had the highest number of papers with co-citations. Exosomes, extracellular vesicles, pregnancy, microRNAs, preeclampsia, placenta, microvesicles, gene expression, biomarkers, and first trimester were the most frequently used terms.Conclusion: Exosome research is booming in reproductive biomedicine. Future studies will likely focus on exosomes as biomarkers in gamete formation and fertilization, pregnancy, and cancers associated with reproduction. In addition to focusing on fundamental research, we should concentrate on the application of the results and the investigation of exosomes in infertile patients.
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Affiliation(s)
- Yifeng Shen
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yaodong You
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Kun Zhu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chunyan Fang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Degui Chang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xujun Yu
- School of Medicine and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Xujun Yu,
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12
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Aoki S, Inoue Y, Shinozawa A, Tanaka K, Shirasuna K, Iwata H. miR-17-5p in bovine oviductal fluid affects embryo development. Mol Cell Endocrinol 2022; 551:111651. [PMID: 35452772 DOI: 10.1016/j.mce.2022.111651] [Citation(s) in RCA: 4] [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: 01/27/2022] [Revised: 04/03/2022] [Accepted: 04/16/2022] [Indexed: 11/22/2022]
Abstract
This study identified microRNAs (miRNAs) in bovine oviductal fluids (OFs) and examined the effect of miR-17-5p in OFs on embryonic development to the blastocyst stage. Small RNA-seq of extracellular vesicles of OFs revealed 242 miRNAs. Additionally, analyzing expressions of randomly selected OF-miRNAs with RT-qPCR in the culture medium of oviductal epithelial cells indicated that the abundance of miRNAs in OFs increased during the luteal phase. miR-17-5p mimic-treated eight-cell-stage zona pellucida-free embryos showed improved embryonic development to the blastocyst stage. The effect of the miR-17-5p mimic was confirmed using a dual-luciferase assay and immunostaining. In addition, RNA-seq of the miR-17-5p mimic- or control-treated embryos revealed differentially expressed genes (DEGs), suggesting possible pathways that overlapped with the in silico-predicted pathways for miR-17-5p targeting genes. Furthermore, ingenuity pathway analysis of DEG predicted miR-17 to be a significant upstream regulator. Our results suggest that miR-17-5p in OFs regulates embryonic development in bovines.
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Affiliation(s)
- Sogo Aoki
- Department of Animal Science, Graduate School of Agriculture, Tokyo University of Agriculture, Funako, 1737, Atsugi City, Kanagawa, Japan
| | - Yuki Inoue
- Department of Animal Science, Graduate School of Agriculture, Tokyo University of Agriculture, Funako, 1737, Atsugi City, Kanagawa, Japan
| | - Akihisa Shinozawa
- NODAI Genome Research Center, Tokyo University of Agriculture, Sakuragaoka 1-1-1, Setagaya, Tokyo, Japan
| | - Keisuke Tanaka
- NODAI Genome Research Center, Tokyo University of Agriculture, Sakuragaoka 1-1-1, Setagaya, Tokyo, Japan
| | - Koumei Shirasuna
- Department of Animal Science, Graduate School of Agriculture, Tokyo University of Agriculture, Funako, 1737, Atsugi City, Kanagawa, Japan
| | - Hisataka Iwata
- Department of Animal Science, Graduate School of Agriculture, Tokyo University of Agriculture, Funako, 1737, Atsugi City, Kanagawa, Japan.
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Gad A, Murin M, Bartkova A, Kinterova V, Marcollova K, Laurincik J, Prochazka R. Small-extracellular vesicles and their microRNA cargo from porcine follicular fluids: the potential association with oocyte quality. J Anim Sci Biotechnol 2022; 13:82. [PMID: 35725584 PMCID: PMC9208166 DOI: 10.1186/s40104-022-00723-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 04/21/2022] [Indexed: 12/03/2022] Open
Abstract
Background Ovarian follicular fluids (FFs) contain several kinds of regulatory factors that maintain a suitable microenvironment for oocyte development. Extracellular vesicles (EVs) are among the factors that play essential roles in regulating follicle and oocyte development through their cargo molecules that include microRNAs (miRNAs). This study aimed to investigate small-EV (s-EV) miRNAs in porcine FFs and their potential association with oocyte quality. Methods Individual aspirated oocytes were stained with lissamine green B stain (LB), a vital stain for oocyte quality, and each oocyte was classified as high-quality (unstained; HQ) or low-quality (stained; LQ). FFs corresponding to oocytes were pooled together into HQ and LQ groups. Small-EVs were isolated from FFs, characterized, and their miRNA cargo was identified using the Illumina NovaSeq sequencing platform. Additionally, s-EVs from the HQ and LQ groups were utilized to investigate their effect on oocyte development after co-incubation during in vitro maturation. Results A total of 19 miRNAs (including miR-125b, miR-193a-5p, and miR-320) were significantly upregulated, while 23 (including miR-9, miR-206, and miR-6516) were downregulated in the HQ compared to the LQ group. Apoptosis, p53 signaling, and cAMP signaling were among the top pathways targeted by the elevated miRNAs in the HQ group while oocyte meiosis, gap junction, and TGF-beta signaling were among the top pathways targeted by the elevated miRNAs in the LQ group. The supplementation of small-EVs during maturation does not affect the oocyte developmental rates. However, LQ s-EVs increase the proportion of oocytes with homogeneous mitochondrial distribution and decrease the proportion of heterogeneous distribution. Conclusion Our findings indicated that FF-EVs contain different miRNA cargos associated with oocyte quality and could affect the mitochondrial distribution patterns during oocyte maturation. Supplementary Information The online version contains supplementary material available at 10.1186/s40104-022-00723-1.
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Affiliation(s)
- Ahmed Gad
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, 27721, Liběchov, Czech Republic.,Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt
| | - Matej Murin
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, 27721, Liběchov, Czech Republic.
| | - Alexandra Bartkova
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, 27721, Liběchov, Czech Republic.,Department of Botany and Genetics, Faculty of Natural Sciences, Constantine the Philosopher University in Nitra, 94901, Nitra, Slovakia
| | - Veronika Kinterova
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, 27721, Liběchov, Czech Republic
| | - Katerina Marcollova
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, 27721, Liběchov, Czech Republic
| | - Jozef Laurincik
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, 27721, Liběchov, Czech Republic.,Department of Botany and Genetics, Faculty of Natural Sciences, Constantine the Philosopher University in Nitra, 94901, Nitra, Slovakia
| | - Radek Prochazka
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, 27721, Liběchov, Czech Republic
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14
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Extracellular vesicles in mammalian reproduction: a review. ZYGOTE 2022; 30:440-463. [PMID: 35652626 DOI: 10.1017/s0967199422000090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Over the last decades, extracellular vesicles (EVs) have been found to be implicated in a complex universal mechanism of communication between different cell types. EVs are nanostructures of lipid nature that have an exosomal or ectosomal biogenesis, responsible for the intercellular transport of proteins, lipids, carbohydrates, nucleic acids, ions, among other molecules. The content of EVs can vary due to various factors such as hormonal stimuli, non-physiological conditions, metabolic state, etc. Once EVs reach their target cell, they can modulate processes such as gene expression, metabolism, response to external factors, and can even be associated with the delivery of molecules involved in epigenetic inheritance processes in germ cells. In mammalian reproduction, EVs have been shown to play an important role, either in vivo or in vitro, modulating a variety of processes in sperm, oocytes and embryos, and in their respective environments. Moreover, EVs represent a biodegradable, harmless and specific vehicle, which makes them attractive allies to consider when improving assisted reproductive technologies (ARTs). Therefore, the present review aims to describe the content of the main EVs involved in mammalian reproduction and how they can vary due to different factors, as well as to detail how EVs modulate, directly or indirectly, different molecular processes in gametes and embryos. In addition, we will highlight the mechanisms that remain to be elucidated. We will also propose new perspectives according to the characteristics of each particular EV to improve the different ARTs.
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15
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Xu G, Hu Y, Yu D, Chen X, Li X, Duan S, Zhang N, Xu G, Hu J, Yang G, Sun S, Liu Y. Discovery of Differentially Expressed MicroRNAs in Porcine Ovaries With Smaller and Larger Litter Size. Front Genet 2022; 13:762124. [PMID: 35222529 PMCID: PMC8864311 DOI: 10.3389/fgene.2022.762124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 01/03/2022] [Indexed: 12/14/2022] Open
Abstract
The number of live births in a litter is an important reproductive trait, and is one of the main indicators which reflect the production level and economic benefit of a pig farm. The ovary is an important reproductive organ of the sow, and it undergoes a series of biological processes during each estrous cycle. A complex transcriptional network containing coding and non-coding RNAs in the ovary closely regulates the reproductive capability of sows. However, the molecular regulation mechanisms affecting sow litter size are still unclear. We investigated the expression profiles of microRNAs (miRNAs) in porcine ovaries from sows with smaller than average litter sizes (SLS) and those with larger litter sizes (LLS). In total, 411 miRNAs were identified, and of these 17 were significantly down-regulated and 16 miRNAs were up-regulated when comparing sows with LLS and SLS, respectively. We further characterized the role of miR-183 which was one of the most up-regulated miRNAs. CCK-8, EdU incorporation and western blotting assays demonstrated that miR-183 promoted the proliferation of granulosa cells (GCs) in pig ovaries. Moreover, miR-183 inhibited the synthesis of estradiol in GCs and promoted the synthesis of progesterone. These results will help in gaining understanding of the role of miRNAs in regulating porcine litter size.
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Affiliation(s)
- Gaoxiao Xu
- Key Laboratory of Embryo Development and Reproductive Regulation of Anhui Province, Fuyang Normal University, Fuyang, China
- Teaching and Research Section of Biotechnology, Nanning University, Nanning, China
| | - Yamei Hu
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Dongling Yu
- Teaching and Research Section of Biotechnology, Nanning University, Nanning, China
| | - Xingfa Chen
- Nanning Dabeinong Feed Technology Co., Ltd., Nanning, China
| | - Xiao Li
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Saixing Duan
- Teaching and Research Section of Biotechnology, Nanning University, Nanning, China
| | - Ning Zhang
- Nanning Dabeinong Feed Technology Co., Ltd., Nanning, China
| | - Gaoyu Xu
- Key Laboratory of Embryo Development and Reproductive Regulation of Anhui Province, Fuyang Normal University, Fuyang, China
| | - Jianhong Hu
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Gongshe Yang
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Shiduo Sun
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Yong Liu
- Key Laboratory of Embryo Development and Reproductive Regulation of Anhui Province, Fuyang Normal University, Fuyang, China
- *Correspondence: Yong Liu,
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Zhou Z, Tu Z, Zhang J, Tan C, Shen X, Wan B, Li Y, Wang A, Zhao L, Hu J, Ma N, Zhou J, Chen L, Song Y, Lu W. Follicular Fluid-Derived Exosomal MicroRNA-18b-5p Regulates PTEN-Mediated PI3K/Akt/mTOR Signaling Pathway to Inhibit Polycystic Ovary Syndrome Development. Mol Neurobiol 2022; 59:2520-2531. [PMID: 35092573 DOI: 10.1007/s12035-021-02714-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 12/22/2021] [Indexed: 11/30/2022]
Abstract
Small RNA sequences in follicular fluid (FF)-derived exosomes (extracellular vesicles contain proteins, DNA, and RNA) vitally function in the development of polycystic ovary syndrome (PCOS). It has been identified that microRNA (miR)-18b-5p is one of miRs that differ between control and PCOS women that passed the false discovery rate, and phosphatase and tensin homolog deleted on chromosome 10 (PTEN) is an important modifier of biological functions of ovarian granulosa cells (GCs) in PCOS. However, whether miR-18b-5p could functionally mediate the progression of PCOS via PTEN was not clarified completely, which was the issue we wanted to solve in our research. FF-derived exosomes were isolated using an extraction kit. KGN cells were co-cultured with miR-18b-5p-modified exosomes or transfected with a PTEN-related vector. After treatment, cell proliferation and apoptosis were observed. A rat model of PCOS was established by letrozole and then injected with miR-18b-5p-modified exosomes. Then, serum follicle-stimulating hormone (FSH), luteinizing hormone (LH), testosterone, and estradiol (E2) levels in PCOS rats were measured. miR-18b-5p, PTEN, and phosphatidylinositol 3 kinases/protein kinase B/mammalian target of rapamycin (PI3K/Akt/mTOR) pathway-related genes were tested. In PCOS patients, miR-18b-5p was downregulated, and PTEN was highly expressed in FF and GCs. PTEN knockdown increased KGN cell proliferation and limited apoptosis. FF-derived exosomes stimulated proliferation and suppressed apoptosis of KGN cells; decreased FSH, LH, and testosterone; and increased E2 in PCOS rats. Upregulating miR-18b-5p further enhanced the inhibitory effects of exosomes on suppressing the progression of PCOS. miR-18b-5p targeted PTEN and could activate PI3K/Akt/mTOR pathway. miR-18b-5p produced by FF-derived exosomes reduces PTEN expression and promotes the activation of the PI3K/Akt/mTOR signaling pathway to improve PCOS. Based on that, circulating miR-18b-5p levels can contribute to the progression of PCOS complications.
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Affiliation(s)
- Zhi Zhou
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China
| | - Zhihua Tu
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China
| | - Juan Zhang
- Reproductive Medical Center, Zhuzhou Central Hospital, Zhuzhou, 412007, Hunan, China
| | - Can Tan
- Feinberg Cardiovascular and Renal Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Xiaoyong Shen
- Yikon Genomics Co. Ltd., Suzhou, 215000, Jiangsu, China
| | - Bangbei Wan
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China
| | - Yejuan Li
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China
| | - Anguo Wang
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China
| | - Liqiang Zhao
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China
| | - Jiajia Hu
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China
| | - Ning Ma
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China
| | - Jing Zhou
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China
| | - Lin Chen
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China
| | - Yanqin Song
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China
| | - Weiying Lu
- Reproductive Medical Center, Hainan Women and Children's Medical Center, No.75 Longkun South Road, Haikou, 570206, Hainan, China.
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Regulation of granulosa cell functions through NRP-1 mediated internalization of follicular fluid non-exosomal miR-210. Cell Tissue Res 2021; 386:649-660. [PMID: 34599690 DOI: 10.1007/s00441-021-03524-6] [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: 04/06/2021] [Accepted: 09/07/2021] [Indexed: 10/20/2022]
Abstract
Crosstalk between follicular fluid (FF) and granulosa cells (GCs) plays a vital role in the regulation of folliculogenesis, ensuring regular reproductive cycle in mammals. This crosstalk is primarily mediated by hormones and signaling molecules, such as cytokines and chemokines. Recently, extracellular microRNAs (miRNAs) have gained a lot of attention in cell-to-cell communication. Extracellular miRNA transportation occurs through exosomes, a kind of micro-vesicles produced from almost all cells. However, the mode of non-exosomal miRNA internalization is not much studied. In the present study, we explored the role of neuropilin-1 (NRP-1) as a receptor in internalizing FF non-exosomal miRNAs in GCs. We first confirmed the expression of NRP-1 in GCs during follicular development followed by its role in the internalization of miR-210, a non-exosomal miRNA. This study showed that incubation of GCs with a non-exosomal fraction of FF increased the content of miR-210 in GCs as compared to their control. To illustrate the role of NRP-1 as a receptor, NRP-1 was knockdown using siRNA. Silencing experimental results showed a significant decrease in uptake of miR-210 in NRP-1 knockdown GCs. Furthermore, downstream expression analysis of miR-210 target genes (CYP19A1, PCNA, and EFNA3) also confirmed the NRP-1 mediated miR-210 internalization. Results of the present study clearly demonstrated that FF non-exosomal miR-210 can be internalized through the NRP-1 receptor. Furthermore, differential expression of NRP-1 in GCs suggests its role in follicular development. Overall, these findings suggest that FF non-exosomal miRNA plays an important role in GC functions and female reproduction.
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