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Rokhsartalab Azar P, Maleki Aghdam M, Karimi S, Haghtalab A, Sadeghpour S, Mellatyar H, Taheri-Anganeh M, Ghasemnejad-Berenji H. Uterine fluid microRNAs in repeated implantation failure. Clin Chim Acta 2024; 558:119678. [PMID: 38641194 DOI: 10.1016/j.cca.2024.119678] [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: 01/25/2024] [Revised: 04/13/2024] [Accepted: 04/15/2024] [Indexed: 04/21/2024]
Abstract
Recurrent implantation failure (RIF) is a significant obstacle in assisted reproductive procedures, primarily because of compromised receptivity. As such, there is a need for a dependable and accurate clinical test to evaluate endometrial receptiveness, particularly during embryo transfer. MicroRNAs (miRNAs) have diverse functions in the processes of implantation and pregnancy. Dysregulation of miRNAs results in reproductive diseases such as recurrent implantation failure (RIF). The endometrium secretes several microRNAs (miRNAs) during the implantation period, which could potentially indicate whether the endometrium is suitable for in vitro fertilization (IVF). The goal of this review is to examine endometrial miRNAs as noninvasive biomarkers that successfully predict endometrium receptivity in RIF.
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Affiliation(s)
| | - Mahdi Maleki Aghdam
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran
| | - Sarmad Karimi
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran
| | - Arian Haghtalab
- School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Sonia Sadeghpour
- Department of Obstetrics and Gynecology, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran; Reproductive Health Research Center, Clinical Research Institute, Urmia University of Medical Sciences, Urmia, Iran
| | | | - Mortaza Taheri-Anganeh
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, Urmia, Iran.
| | - Hojat Ghasemnejad-Berenji
- Reproductive Health Research Center, Clinical Research Institute, Urmia University of Medical Sciences, Urmia, Iran.
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2
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Zahir M, Tavakoli B, Zaki-Dizaji M, Hantoushzadeh S, Majidi Zolbin M. Non-coding RNAs in Recurrent implantation failure. Clin Chim Acta 2024; 553:117731. [PMID: 38128815 DOI: 10.1016/j.cca.2023.117731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/17/2023] [Accepted: 12/18/2023] [Indexed: 12/23/2023]
Abstract
Recurrent implantation failure (RIF), defined as the inability to achieve conception following multiple consecutive in-vitro fertilization (IVF) attempts, represents a complex and multifaceted challenge in reproductive medicine. The emerging role of non-coding RNAs in RIF etiopathogenesis has only gained prominence over the last decade, illustrating a new dimension to our understanding of the intricate network underlying RIF. Successful embryo implantation demands a harmonious synchronization between an adequately decidualized endometrium, a competent blastocyst, and effective maternal-embryonic interactions. Emerging evidence has clarified the involvement of a sophisticated network of non-coding RNAs, including microRNAs, circular RNAs, and long non-coding RNAs, in orchestrating these pivotal processes. Disconcerted expression of these molecules can disrupt the delicate equilibrium required for implantation, amplifying the risk of RIF. This comprehensive review presents an in-depth investigation of the complex role played by non-coding RNAs in the pathogenesis of RIF. Furthermore, it underscores the vast potential of non-coding RNAs as diagnostic biomarkers and therapeutic targets, with the ultimate goal of enhancing implantation success rates in IVF cycles. As ongoing research continues to unravel the intercalated web of molecular interactions, exploiting the power of non-coding RNAs may offer promising avenues for mitigating the challenges posed by RIF and improving the outcomes of assisted reproduction.
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Affiliation(s)
- Mazyar Zahir
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Pediatric Urology and Regenerative Medicine Research Center, Gene, Cell and Tissue Research Institute, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Bahareh Tavakoli
- Pediatric Urology and Regenerative Medicine Research Center, Gene, Cell and Tissue Research Institute, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Biology, Maragheh University, Maragheh, Iran
| | - Majid Zaki-Dizaji
- Legal Medicine Research Center, Legal Medicine Organization, Tehran, Iran
| | - Sedigheh Hantoushzadeh
- Vali-E-Asr Reproductive Health Research Center, Family Health Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Masoumeh Majidi Zolbin
- Pediatric Urology and Regenerative Medicine Research Center, Gene, Cell and Tissue Research Institute, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.
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3
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Chen MJ, Hsu A, Lin PY, Chen YL, Wu KW, Chen KC, Wang T, Yi YC, Kung HF, Chang JC, Yang WJ, Lu F, Guu HF, Chen YF, Chuan ST, Chen LY, Chen CH, Yang PE, Huang JYJ. Development of a Predictive Model for Optimization of Embryo Transfer Timing Using Blood-Based microRNA Expression Profile. Int J Mol Sci 2023; 25:76. [PMID: 38203247 PMCID: PMC10779357 DOI: 10.3390/ijms25010076] [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: 10/30/2023] [Revised: 12/08/2023] [Accepted: 12/15/2023] [Indexed: 01/12/2024] Open
Abstract
MicroRNAs (miRNAs) can regulate the expression of genes involved in the establishment of the window of implantation (WOI) in the endometrium. Recent studies indicated that cell-free miRNAs in uterine fluid and blood samples could act as alternative and non-invasive sample types for endometrial receptivity analysis. In this study, we attempt to systematically evaluate whether the expression levels of cell-free microRNAs in blood samples could be used as non-invasive biomarkers for assessing endometrial receptivity status. We profiled the miRNA expression levels of 111 blood samples using next-generation sequencing to establish a predictive model for the assessment of endometrial receptivity status. This model was validated with an independent dataset (n = 73). The overall accuracy is 95.9%. Specifically, we achieved accuracies of 95.9%, 95.9%, and 100.0% for the pre-receptive group, the receptive group, and the post-respective group, respectively. Additionally, we identified a set of differentially expressed miRNAs between different endometrial receptivity statuses using the following criteria: p-value < 0.05 and fold change greater than 1.5 or less than -1.5. In conclusion, the expression levels of cell-free miRNAs in blood samples can be utilized in a non-invasive manner to distinguish different endometrial receptivity statuses.
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Affiliation(s)
- Ming-Jer Chen
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics Gynecology & Women’s Health, Taichung Veterans General Hospital, Taichung 40764, Taiwan; (M.-J.C.); (Y.-C.Y.); (H.-F.K.); (J.-C.C.); (H.-F.G.); (Y.-F.C.); (S.-T.C.); (L.-Y.C.)
| | - An Hsu
- Inti Labs, Hsinchu 30261, Taiwan; (A.H.); (P.-Y.L.); (Y.-L.C.); (K.-W.W.); (K.-C.C.); (T.W.)
| | - Pei-Yi Lin
- Inti Labs, Hsinchu 30261, Taiwan; (A.H.); (P.-Y.L.); (Y.-L.C.); (K.-W.W.); (K.-C.C.); (T.W.)
| | - Yu-Ling Chen
- Inti Labs, Hsinchu 30261, Taiwan; (A.H.); (P.-Y.L.); (Y.-L.C.); (K.-W.W.); (K.-C.C.); (T.W.)
| | - Ko-Wen Wu
- Inti Labs, Hsinchu 30261, Taiwan; (A.H.); (P.-Y.L.); (Y.-L.C.); (K.-W.W.); (K.-C.C.); (T.W.)
| | - Kuan-Chun Chen
- Inti Labs, Hsinchu 30261, Taiwan; (A.H.); (P.-Y.L.); (Y.-L.C.); (K.-W.W.); (K.-C.C.); (T.W.)
| | - Tiffany Wang
- Inti Labs, Hsinchu 30261, Taiwan; (A.H.); (P.-Y.L.); (Y.-L.C.); (K.-W.W.); (K.-C.C.); (T.W.)
| | - Yu-Chiao Yi
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics Gynecology & Women’s Health, Taichung Veterans General Hospital, Taichung 40764, Taiwan; (M.-J.C.); (Y.-C.Y.); (H.-F.K.); (J.-C.C.); (H.-F.G.); (Y.-F.C.); (S.-T.C.); (L.-Y.C.)
| | - Hsiao-Fan Kung
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics Gynecology & Women’s Health, Taichung Veterans General Hospital, Taichung 40764, Taiwan; (M.-J.C.); (Y.-C.Y.); (H.-F.K.); (J.-C.C.); (H.-F.G.); (Y.-F.C.); (S.-T.C.); (L.-Y.C.)
| | - Jui-Chun Chang
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics Gynecology & Women’s Health, Taichung Veterans General Hospital, Taichung 40764, Taiwan; (M.-J.C.); (Y.-C.Y.); (H.-F.K.); (J.-C.C.); (H.-F.G.); (Y.-F.C.); (S.-T.C.); (L.-Y.C.)
| | - Wen-Jui Yang
- Taiwan IVF Group Center for Reproductive Medicine and Infertility, Hsinchu 30274, Taiwan; (W.-J.Y.); (F.L.); (C.-H.C.)
| | - Farn Lu
- Taiwan IVF Group Center for Reproductive Medicine and Infertility, Hsinchu 30274, Taiwan; (W.-J.Y.); (F.L.); (C.-H.C.)
| | - Hwa-Fen Guu
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics Gynecology & Women’s Health, Taichung Veterans General Hospital, Taichung 40764, Taiwan; (M.-J.C.); (Y.-C.Y.); (H.-F.K.); (J.-C.C.); (H.-F.G.); (Y.-F.C.); (S.-T.C.); (L.-Y.C.)
| | - Ya-Fang Chen
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics Gynecology & Women’s Health, Taichung Veterans General Hospital, Taichung 40764, Taiwan; (M.-J.C.); (Y.-C.Y.); (H.-F.K.); (J.-C.C.); (H.-F.G.); (Y.-F.C.); (S.-T.C.); (L.-Y.C.)
| | - Shih-Ting Chuan
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics Gynecology & Women’s Health, Taichung Veterans General Hospital, Taichung 40764, Taiwan; (M.-J.C.); (Y.-C.Y.); (H.-F.K.); (J.-C.C.); (H.-F.G.); (Y.-F.C.); (S.-T.C.); (L.-Y.C.)
| | - Li-Yu Chen
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics Gynecology & Women’s Health, Taichung Veterans General Hospital, Taichung 40764, Taiwan; (M.-J.C.); (Y.-C.Y.); (H.-F.K.); (J.-C.C.); (H.-F.G.); (Y.-F.C.); (S.-T.C.); (L.-Y.C.)
| | - Ching-Hung Chen
- Taiwan IVF Group Center for Reproductive Medicine and Infertility, Hsinchu 30274, Taiwan; (W.-J.Y.); (F.L.); (C.-H.C.)
| | - Pok Eric Yang
- Inti Labs, Hsinchu 30261, Taiwan; (A.H.); (P.-Y.L.); (Y.-L.C.); (K.-W.W.); (K.-C.C.); (T.W.)
| | - Jack Yu-Jen Huang
- Taiwan IVF Group Center for Reproductive Medicine and Infertility, Hsinchu 30274, Taiwan; (W.-J.Y.); (F.L.); (C.-H.C.)
- Department of Obstetrics & Gynecology, Stanford University, Stanford, CA 94305, USA
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4
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Piergentili R, Gullo G, Basile G, Gulia C, Porrello A, Cucinella G, Marinelli E, Zaami S. Circulating miRNAs as a Tool for Early Diagnosis of Endometrial Cancer-Implications for the Fertility-Sparing Process: Clinical, Biological, and Legal Aspects. Int J Mol Sci 2023; 24:11356. [PMID: 37511115 PMCID: PMC10379073 DOI: 10.3390/ijms241411356] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/04/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
This review article explores the possibility of developing an integrated approach to the management of the different needs of endometrial cancer (EC) patients seeking to become pregnant. Life preservation of the woman, health preservation of the baby, a precocious and-as much as possible-minimally invasive characterization of the health and fertility parameters of the patient, together with the concerns regarding the obstetric, neonatal, and adult health risks of the children conceived via assisted reproductive techniques (ART) are all essential aspects of the problem to be taken into consideration, yet the possibility to harmonize such needs through a concerted and integrated approach is still very challenging. This review aims to illustrate the main features of EC and how it affects the normal physiology of pre-menopausal women. We also focus on the prospect of a miR-based, molecular evaluation of patient health status, including both EC early diagnosis and staging and, similarly, the receptivity of the woman, discussing the possible evaluation of both aspects using a single specific panel of circulating miRs in the patient, thus allowing a relatively fast, non-invasive testing with a significantly reduced margin of error. Finally, the ethical and legal/regulatory aspects of such innovative techniques require not only a risk-benefit analysis; respect for patient autonomy and equitable health care access allocation are fundamental issues as well.
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Affiliation(s)
- Roberto Piergentili
- Istituto di Biologia e Patologia Molecolari del CNR (IBPM-CNR), 00185 Rome, Italy
| | - Giuseppe Gullo
- Department of Obstetrics and Gynecology, Villa Sofia Cervello Hospital, IVF UNIT, University of Palermo, 90146 Palermo, Italy
| | | | - Caterina Gulia
- Dipartimento di Urologia, Ospedale della Misericordia, 58100 Grosseto, Italy
| | - Alessandro Porrello
- Lineberger Comprehensive Cancer Center & RNA Discovery Center, University of North Carolina at Chapel Hill, 450 West Drive, Chapel Hill, NC 27599, USA
| | - Gaspare Cucinella
- Department of Obstetrics and Gynecology, Villa Sofia Cervello Hospital, IVF UNIT, University of Palermo, 90146 Palermo, Italy
| | - Enrico Marinelli
- Department of Medico-Surgical Sciences and Biotechnologies, "Sapienza" University of Rome, 00161 Rome, Italy
| | - Simona Zaami
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, "Sapienza" University of Rome, 00161 Rome, Italy
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5
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Beltrami S, Rizzo S, Schiuma G, Speltri G, Di Luca D, Rizzo R, Bortolotti D. Gestational Viral Infections: Role of Host Immune System. Microorganisms 2023; 11:1637. [PMID: 37512810 PMCID: PMC10383666 DOI: 10.3390/microorganisms11071637] [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: 05/11/2023] [Revised: 06/13/2023] [Accepted: 06/19/2023] [Indexed: 07/30/2023] Open
Abstract
Viral infections in pregnancy are major causes of maternal and fetal morbidity and mortality. Infections can develop in the neonate transplacentally, perinatally, or postnatally (from breast milk or other sources) and lead to different clinical manifestations, depending on the viral agent and the gestational age at exposure. Viewing the peculiar tolerogenic status which characterizes pregnancy, viruses could exploit this peculiar immunological status to spread or affect the maternal immune system, adopting several evasion strategies. In fact, both DNA and RNA virus might have a deep impact on both innate and acquired immune systems. For this reason, investigating the interaction with these pathogens and the host's immune system during pregnancy is crucial not only for the development of most effective therapies and diagnosis but mostly for prevention. In this review, we will analyze some of the most important DNA and RNA viruses related to gestational infections.
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Affiliation(s)
- Silvia Beltrami
- Department of Chemical, Pharmaceutical and Agricultural Science, University of Ferrara, 44121 Ferrara, Italy
| | - Sabrina Rizzo
- Department of Chemical, Pharmaceutical and Agricultural Science, University of Ferrara, 44121 Ferrara, Italy
| | - Giovanna Schiuma
- Department of Chemical, Pharmaceutical and Agricultural Science, University of Ferrara, 44121 Ferrara, Italy
| | - Giorgia Speltri
- Department of Chemical, Pharmaceutical and Agricultural Science, University of Ferrara, 44121 Ferrara, Italy
| | - Dario Di Luca
- Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Roberta Rizzo
- Department of Chemical, Pharmaceutical and Agricultural Science, University of Ferrara, 44121 Ferrara, Italy
| | - Daria Bortolotti
- Department of Chemical, Pharmaceutical and Agricultural Science, University of Ferrara, 44121 Ferrara, Italy
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6
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Fu X, Li Y, Zhang Z, Wang B, Wei R, Chu C, Xu K, Li L, Liu Y, Li X. Emerging role of miRNAs, lncRNAs, and circRNAs in pregnancy-associated diseases. Chin Med J (Engl) 2023; 136:1300-1310. [PMID: 36914956 PMCID: PMC10309522 DOI: 10.1097/cm9.0000000000002595] [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: 06/13/2022] [Indexed: 03/15/2023] Open
Abstract
ABSTRACT Accumulating studies have demonstrated that non-coding RNAs (ncRNAs), functioning as important regulators of transcription and translation, are involved in the establishment and maintenance of pregnancy, especially the maternal immune adaptation process. The endometrial stromal cells (ESCs), trophoblast cells, and decidua immune cells that reside at the maternal-fetal interface are thought to play significant roles in normal pregnancy and pregnancy-associated diseases. Here, we reviewed the up-to-date evidence on how microRNA, long non-coding RNA, and circular RNA regulate ESCs, trophoblast cells, and immune cells and discussed the potential applications of these ncRNAs as diagnostic and therapeutic markers in pregnancy complications.
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Affiliation(s)
- Xiaoxiao Fu
- Innovative Institute of Chinese Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, China
- School of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250062, China
| | - Yuling Li
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250011, China
| | - Zhen Zhang
- Innovative Institute of Chinese Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, China
- School of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250062, China
| | - Bin Wang
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250011, China
| | - Ran Wei
- School of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250062, China
| | - Chu Chu
- Innovative Institute of Chinese Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, China
| | - Ke Xu
- Innovative Institute of Chinese Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, China
- School of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250062, China
| | - Lihua Li
- Innovative Institute of Chinese Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, China
- School of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250062, China
| | - Yonglin Liu
- Innovative Institute of Chinese Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, China
| | - Xia Li
- Innovative Institute of Chinese Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, China
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7
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Dong Y, Li J, Cao D, Zhong J, Liu X, Duan YG, Lee KF, Yeung WB, Lee CL, Chiu PN. Integrated microRNA and secretome analysis of human endometrial organoids reveal the miR-3194-5p/Aquaporin/S100A9 module in regulating trophoblast functions. Mol Cell Proteomics 2023; 22:100526. [PMID: 36889440 PMCID: PMC10119685 DOI: 10.1016/j.mcpro.2023.100526] [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: 03/16/2022] [Revised: 02/15/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
Successful placentation requires delicate communication between the endometrium and trophoblasts. The invasion and integration of trophoblasts into the endometrium during early pregnancy is crucial to placentation. Dysregulation of these functions is associated with various pregnancy complications, such as miscarriage and preeclampsia. The endometrial microenvironment has an important influence on trophoblast cell functions. The precise effect of the endometrial gland secretome on trophoblast functions remains uncertain. We hypothesized that the hormonal environment regulates the miRNA profile and secretome of the human endometrial gland, which subsequently modulates trophoblast functions during early pregnancy. Human endometrial tissues were obtained from endometrial biopsies with written consent. Endometrial organoids were established in matrix gel under defined culture conditions. They were treated with hormones mimicking the environment of the proliferative phase (Estrogen, E2), secretory phase (E2+Progesterone, P4), and early pregnancy (E2+P4+Human Chorionic Gonadotropin, hCG). miRNA-seq was performed on the treated organoids. Organoid secretions were also collected for mass spectrometric analysis. The viability and invasion/migration of the trophoblasts after treatment with the organoid secretome were determined by cytotoxicity assay and transwell assay, respectively. Endometrial organoids with the ability to respond to sex steroid hormones were successfully developed from human endometrial glands. By establishing the first secretome profiles and miRNA atlas of these endometrial organoids to the hormonal changes followed by trophoblast functional assays, we demonstrated that sex steroid hormones modulate aquaporin (AQP)1/9 and S100A9 secretions through miR-3194 activation in endometrial epithelial cells, which in turn enhanced trophoblast migration and invasion during early pregnancy. By using a human endometrial organoid model, we demonstrated for the first time that the hormonal regulation of the endometrial gland secretome is crucial to regulating the functions of human trophoblasts during early pregnancy. The study provides the basis for understanding the regulation of early placental development in humans.
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Affiliation(s)
- Yang Dong
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R.; Shenzhen Huarui Model Organisms Biotechnology Co., LTD, Shenzhen China
| | - Jianlin Li
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R.; The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Dandan Cao
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Jiangming Zhong
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R
| | - Xiaofeng Liu
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Yong-Gang Duan
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R.; The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - WilliamS B Yeung
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Cheuk-Lun Lee
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R.; The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China.
| | - PhilipC N Chiu
- The University of Hong Kong Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China; Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R..
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8
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Shi L, Li H, Wang L. Genetic parameters estimation and genome molecular marker identification for gestation length in pigs. Front Genet 2023; 13:1046423. [PMID: 36685960 PMCID: PMC9849246 DOI: 10.3389/fgene.2022.1046423] [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: 09/16/2022] [Accepted: 11/28/2022] [Indexed: 01/06/2023] Open
Abstract
Gestation length (GL) plays an important role in piglet maturation of major organs and development of body, while the genetic molecular markers of GL have not been extensively identified. In this study, according to the 5,662 effective records of 3,072 sows, the heritability and repeatability of GL were estimated through the dmuai of DMU Version 6.5.1 with a repeatability model, namely, h 2 = 0.1594 and r e 2 = 0.2437. Among these sows, 906 individuals were genotyped with the GeneSeek Genomic Profiler (GGP) Porcine 50K Chip and imputed to the genome-wide level (9,212,179 SNPs) by the online software PHARP v1 for subsequent quality control and GWAS analyses. Further, the Fst was also performed to measure whether the actual frequency of genotypes in different GL phenotypes deviated from the theoretical proportion of genetic balance. We observed the highest degree of differentiation (average Fst value = 0.0376) in the group of 114 and 118 days, and identified a total of 1,002 SNPs strongly associated with GL. Through screening the genes located within a 500 kb distance on either side of the significant SNPs, we proposed 4,588 candidate genes. By the functional annotation, these candidates were found to be mainly involved in multicellular organism metabolism, early endosome, embryo implantation and development, and body and organ signaling pathway. Because of the simultaneous confirmation by GWAS and Fst analyses, there were 20 genes replied to be the most promising candidates including HUNK, ARHGDIB, ERP27, RERG, NEDD9, TMEM170B, SCAF4, SOD1, TIAM1, ENSSSCG00000048838, ENSSSCG00000047227, EDN1, HIVEP1, ENSSSCG00000043944, LRATD1, ENSSSCG00000048577, ENSSSCG00000042932, ENSSSCG00000041405, ENSSSCG00000045589, and ADTRP. This study provided effective molecular information for the genetic improvement of GL in pigs.
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9
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Goharitaban S, Abedelahi A, Hamdi K, Khazaei M, Esmaeilivand M, Niknafs B. Role of endometrial microRNAs in repeated implantation failure (mini-review). Front Cell Dev Biol 2022; 10:936173. [PMID: 36060804 PMCID: PMC9437697 DOI: 10.3389/fcell.2022.936173] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/12/2022] [Indexed: 11/28/2022] Open
Abstract
MicroRNAs (miRNAs) play various roles in the implantation and pregnancy process. Abnormal regulation of miRNAs leads to reproductive disorders such as repeated implantation failure (RIF). During the window of implantation, different miRNAs are released from the endometrium, which can potentially reflect the status of the endometrium for in vitro fertilization (IVF). The focus of this review is to determine whether endometrial miRNAs may be utilized as noninvasive biomarkers to predict the ability of endometrium to implant and provide live birth during IVF cycles. The levels of certain miRNAs in the endometrium have been linked to implantation potential and pregnancy outcomes in previous studies. Endometrial miRNAs could be employed as non-invasive biomarkers in the assisted reproductive technology (ART) cycle to determine the optimal time for implantation. Few human studies have evaluated the association between ART outcomes and endometrial miRNAs in RIF patients. This review may pave the way for more miRNA transcriptomic studies on human endometrium and introduce a specific miRNA profile as a multivariable prediction model for choosing the optimal time in the IVF cycle.
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Affiliation(s)
- Sepide Goharitaban
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Science, Tabriz, Iran
| | - Ali Abedelahi
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Science, Tabriz, Iran
| | - Kobra Hamdi
- Womens Reproductive Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mozafar Khazaei
- Fertility and Infertility Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Masoumeh Esmaeilivand
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behrooz Niknafs
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Science, Tabriz, Iran
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
- *Correspondence: Behrooz Niknafs, , 0000-0003-4438-1880
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10
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Shekibi M, Heng S, Nie G. MicroRNAs in the Regulation of Endometrial Receptivity for Embryo Implantation. Int J Mol Sci 2022; 23:ijms23116210. [PMID: 35682889 PMCID: PMC9181585 DOI: 10.3390/ijms23116210] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/13/2022] [Accepted: 05/28/2022] [Indexed: 12/13/2022] Open
Abstract
Development of endometrial receptivity is crucial for successful embryo implantation and pregnancy initiation. Understanding the molecular regulation underpinning endometrial transformation to a receptive state is key to improving implantation rates in fertility treatments such as IVF. With microRNAs (miRNAs) increasingly recognized as important gene regulators, recent studies have investigated the role of miRNAs in the endometrium. Studies on miRNAs in endometrial disorders such as endometriosis and endometrial cancer have been reviewed previously. In this minireview, we aim to provide an up-to-date knowledge of miRNAs in the regulation of endometrial receptivity. Since endometrial remodelling differs considerably between species, we firstly summarised the key events of the endometrial cycle in humans and mice and then reviewed the miRNAs identified so far in these two species with likely functional significance in receptivity establishment. To date, 29 miRNAs have been reported in humans and 15 miRNAs in mice within various compartments of the endometrium that may potentially modulate receptivity; miRNAs regulating the Wnt signalling and those from the let-7, miR-23, miR-30, miR-200 and miR-183 families are found in both species. Future studies are warranted to investigate miRNAs as biomarkers and/or therapeutic targets to detect/improve endometrial receptivity in human fertility treatment.
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11
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Li J, Jiang X, Li C, Che H, Ling L, Wei Z. Proteomic alteration of endometrial tissues during secretion in polycystic ovary syndrome may affect endometrial receptivity. Clin Proteomics 2022; 19:19. [PMID: 35643455 PMCID: PMC9145147 DOI: 10.1186/s12014-022-09353-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 04/18/2022] [Indexed: 11/10/2022] Open
Abstract
AbstractEmbryo implantation is a complex developmental process that requires coordinated interactions among the embryo, endometrium, and the microenvironment of endometrium factors. Even though the impaired endometrial receptivity of patients with polycystic ovary syndrome (PCOS) is known, understanding of endometrial receptivity is limited. A proteomics study in three patients with PCOS and 3 fertile women was performed to understand the impaired endometrial receptivity in patients with PCOS during luteal phases. Through isobaric tags for relative and absolute quantitation (iTRAQ) analyses, we identified 232 unique proteins involved in the metabolism, inflammation, and cell adhesion molecules. Finally, our results suggested that energy metabolism can affect embryo implantation, whereas inflammation and cell adhesion molecules can affect both endometrial conversion and receptivity. Our results showed that endometrial receptive damage in patients with PCOS is not a single factor. It is caused by many proteins, pathways, systems, and abnormalities, which interact with each other and make endometrial receptive research more difficult.
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12
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Li X, Guo L, Zhang W, He J, Ai L, Yu C, Wang H, Liang W. Identification of Potential Molecular Mechanism Related to Infertile Endometriosis. Front Vet Sci 2022; 9:845709. [PMID: 35419445 PMCID: PMC8995652 DOI: 10.3389/fvets.2022.845709] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 02/28/2022] [Indexed: 11/17/2022] Open
Abstract
Objectives In this research, we aim to explore the bioinformatic mechanism of infertile endometriosis in order to identify new treatment targets and molecular mechanism. Methods The Gene Expression Omnibus (GEO) database was used to download MRNA sequencing data from infertile endometriosis patients. The “limma” package in R software was used to find differentially expressed genes (DEGs). Weighted gene co-expression network analysis (WGCNA) was used to classify genes into modules, further obtained the correlation coefficient between the modules and infertility endometriosis. The intersection genes of the most disease-related modular genes and DEGs are called gene set 1. To clarify the molecular mechanisms and potential therapeutic targets for infertile endometriosis, we used Gene Ontology (GO), Kyoto Gene and Genome Encyclopedia (KEGG) enrichment, Protein-Protein Interaction (PPI) networks, and Gene Set Enrichment Analysis (GSEA) on these intersecting genes. We identified lncRNAs and miRNAs linked with infertility and created competing endogenous RNAs (ceRNA) regulation networks using the Human MicroRNA Disease Database (HMDD), mirTarBase database, and LncRNA Disease database. Results Firstly, WGCNA enrichment analysis was used to examine the infertile endometriosis dataset GSE120103, and we discovered that the Meorangered1 module was the most significantly related with infertile endometriosis. The intersection genes were mostly enriched in the metabolism of different amino acids, the cGMP-PKG signaling pathway, and the cAMP signaling pathway according to KEGG enrichment analysis. The Meorangered1 module genes and DEGs were then subjected to bioinformatic analysis. The hub genes in the PPI network were performed KEGG enrichment analysis, and the results were consistent with the intersection gene analysis. Finally, we used the database to identify 13 miRNAs and two lncRNAs linked to infertility in order to create the ceRNA regulatory network linked to infertile endometriosis. Conclusion In this study, we used a bioinformatics approach for the first time to identify amino acid metabolism as a possible major cause of infertility in patients with endometriosis and to provide potential targets for the diagnosis and treatment of these patients.
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Affiliation(s)
- Xiushen Li
- Department of Obstetrics and Gynecology, Shenzhen University General Hospital, Shenzhen, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, China
- Shenzhen Key Laboratory, Shenzhen University General Hospital, Shenzhen, China
| | - Li Guo
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, China
| | - Weiwen Zhang
- Department of Obstetrics and Gynecology, Shenzhen University General Hospital, Shenzhen, China
| | - Junli He
- Department of Pediatrics, Shenzhen University General Hospital, Shenzhen, China
| | - Lisha Ai
- Department of Teaching and Research, Shenzhen University General Hospital, Shenzhen, China
| | - Chengwei Yu
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, China
- Chinese Academy of Sciences (CAS) Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
- Chengwei Yu
| | - Hao Wang
- Department of Obstetrics and Gynecology, Shenzhen University General Hospital, Shenzhen, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, China
- Shenzhen Key Laboratory, Shenzhen University General Hospital, Shenzhen, China
- Hao Wang
| | - Weizheng Liang
- Department of Pediatrics, Shenzhen University General Hospital, Shenzhen, China
- *Correspondence: Weizheng Liang
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13
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Retis-Resendiz AM, González-García IN, León-Juárez M, Camacho-Arroyo I, Cerbón M, Vázquez-Martínez ER. The role of epigenetic mechanisms in the regulation of gene expression in the cyclical endometrium. Clin Epigenetics 2021; 13:116. [PMID: 34034824 PMCID: PMC8146649 DOI: 10.1186/s13148-021-01103-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 05/13/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The human endometrium is a highly dynamic tissue whose function is mainly regulated by the ovarian steroid hormones estradiol and progesterone. The serum levels of these and other hormones are associated with three specific phases that compose the endometrial cycle: menstrual, proliferative, and secretory. Throughout this cycle, the endometrium exhibits different transcriptional networks according to the genes expressed in each phase. Epigenetic mechanisms are crucial in the fine-tuning of gene expression to generate such transcriptional networks. The present review aims to provide an overview of current research focused on the epigenetic mechanisms that regulate gene expression in the cyclical endometrium and discuss the technical and clinical perspectives regarding this topic. MAIN BODY The main epigenetic mechanisms reported are DNA methylation, histone post-translational modifications, and non-coding RNAs. These epigenetic mechanisms induce the expression of genes associated with transcriptional regulation, endometrial epithelial growth, angiogenesis, and stromal cell proliferation during the proliferative phase. During the secretory phase, epigenetic mechanisms promote the expression of genes associated with hormone response, insulin signaling, decidualization, and embryo implantation. Furthermore, the global content of specific epigenetic modifications and the gene expression of non-coding RNAs and epigenetic modifiers vary according to the menstrual cycle phase. In vitro and cell type-specific studies have demonstrated that epithelial and stromal cells undergo particular epigenetic changes that modulate their transcriptional networks to accomplish their function during decidualization and implantation. CONCLUSION AND PERSPECTIVES Epigenetic mechanisms are emerging as key players in regulating transcriptional networks associated with key processes and functions of the cyclical endometrium. Further studies using next-generation sequencing and single-cell technology are warranted to explore the role of other epigenetic mechanisms in each cell type that composes the endometrium throughout the menstrual cycle. The application of this knowledge will definitively provide essential information to understand the pathological mechanisms of endometrial diseases, such as endometriosis and endometrial cancer, and to identify potential therapeutic targets and improve women's health.
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Affiliation(s)
- Alejandra Monserrat Retis-Resendiz
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México, Montes Urales 800, Lomas Virreyes, Miguel Hidalgo, 11000, Ciudad de México, Mexico
| | - Ixchel Nayeli González-García
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México, Montes Urales 800, Lomas Virreyes, Miguel Hidalgo, 11000, Ciudad de México, Mexico
| | - Moisés León-Juárez
- Departamento de Inmunobioquímica, Instituto Nacional de Perinatología, Ciudad de México, Mexico
| | - Ignacio Camacho-Arroyo
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México, Montes Urales 800, Lomas Virreyes, Miguel Hidalgo, 11000, Ciudad de México, Mexico
| | - Marco Cerbón
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México, Montes Urales 800, Lomas Virreyes, Miguel Hidalgo, 11000, Ciudad de México, Mexico
| | - Edgar Ricardo Vázquez-Martínez
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México, Montes Urales 800, Lomas Virreyes, Miguel Hidalgo, 11000, Ciudad de México, Mexico.
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14
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Wang Z, Liu Y, Liu J, Kong N, Jiang Y, Jiang R, Zhen X, Zhou J, Li C, Sun H, Yan G. ATF3 deficiency impairs the proliferative-secretory phase transition and decidualization in RIF patients. Cell Death Dis 2021; 12:387. [PMID: 33846304 PMCID: PMC8041902 DOI: 10.1038/s41419-021-03679-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/25/2021] [Accepted: 03/30/2021] [Indexed: 12/20/2022]
Abstract
Decidualization is a complex process involving cellular proliferation and differentiation of the endometrial stroma and is required to establish and support pregnancy. Dysregulated decidualization has been reported to be a critical cause of recurrent implantation failure (RIF). In this study, we found that Activating transcription factor 3 (ATF3) expression was significantly downregulated in the endometrium of RIF patients. Knockdown of ATF3 in human endometrium stromal cells (hESCs) hampers decidualization, while overexpression could trigger the expression of decidual marker genes, and ameliorate the decidualization of hESCs from RIF patients. Mechanistically, ATF3 promotes decidualization by upregulating FOXO1 via suppressing miR-135b expression. In addition, the endometrium of RIF patients was hyperproliferative, while overexpression of ATF3 inhibited the proliferation of hESCs through CDKN1A. These data demonstrate the critical roles of endometrial ATF3 in regulating decidualization and proliferation, and dysregulation of ATF3 in the endometrium may be a novel cause of RIF and therefore represent a potential therapeutic target for RIF.
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Affiliation(s)
- Zhilong Wang
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 210008, Nanjing, People's Republic of China
| | - Yang Liu
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 210008, Nanjing, People's Republic of China
| | - Jingyu Liu
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 210008, Nanjing, People's Republic of China
| | - Na Kong
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 210008, Nanjing, People's Republic of China
| | - Yue Jiang
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 210008, Nanjing, People's Republic of China
| | - Ruiwei Jiang
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 210008, Nanjing, People's Republic of China
| | - Xin Zhen
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 210008, Nanjing, People's Republic of China
| | - Jidong Zhou
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 210008, Nanjing, People's Republic of China
| | - Chaojun Li
- Nanjing University Medical School, 210008, Nanjing, People's Republic of China
| | - Haixiang Sun
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 210008, Nanjing, People's Republic of China.
| | - Guijun Yan
- Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 210008, Nanjing, People's Republic of China.
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15
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Liu T, Shi F, Ying Y, Chen Q, Tang Z, Lin H. Mouse model of menstruation: An indispensable tool to investigate the mechanisms of menstruation and gynaecological diseases (Review). Mol Med Rep 2020; 22:4463-4474. [PMID: 33174022 PMCID: PMC7646730 DOI: 10.3892/mmr.2020.11567] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 08/18/2020] [Indexed: 02/07/2023] Open
Abstract
Abnormal menstruation may result in several pathological alterations and gynaecological diseases, including endometriosis, menstrual pain and miscarriage. However, the pathogenesis of menstruation remains unclear due to the limited number of animal models available to study the menstrual cycle. In recent years, an effective, reproducible, and highly adaptive mouse model to study menstruation has been developed. In this model, progesterone and oestrogen were administered in cycles following the removal of ovaries. Subsequently, endometrial decidualisation was induced using sesame oil, followed by withdrawal of progesterone administration. Vaginal bleeding in mice is similar to that in humans. Therefore, the use of mice as a model organism to study the mechanism of menstruation and gynaecological diseases may prove to be an important breakthrough. The present review is focussed ond the development and applications of a mouse model of menstruation. Furthermore, various studies have been described to improve this model and the research findings that may aid in the treatment of menstrual disorders in women are presented.
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Affiliation(s)
- Ting Liu
- Department of Pathophysiology, School of Basic Medicine Sciences, Nanchang University Medical College, Nanchang, Jiangxi 330006, P.R. China
| | - Fuli Shi
- Department of Pathophysiology, School of Basic Medicine Sciences, Nanchang University Medical College, Nanchang, Jiangxi 330006, P.R. China
| | - Ying Ying
- Department of Pathophysiology, School of Basic Medicine Sciences, Nanchang University Medical College, Nanchang, Jiangxi 330006, P.R. China
| | - Qiongfeng Chen
- Department of Pathophysiology, School of Basic Medicine Sciences, Nanchang University Medical College, Nanchang, Jiangxi 330006, P.R. China
| | - Zhimin Tang
- Department of Pathophysiology, School of Basic Medicine Sciences, Nanchang University Medical College, Nanchang, Jiangxi 330006, P.R. China
| | - Hui Lin
- Department of Pathophysiology, School of Basic Medicine Sciences, Nanchang University Medical College, Nanchang, Jiangxi 330006, P.R. China
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16
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Yang W, Lu Z, Zhi Z, Liu L, Deng L, Jiang X, Pang L. Increased miRNA-518b inhibits trophoblast migration and angiogenesis by targeting EGR1 in early embryonic arrest†. Biol Reprod 2020; 101:664-674. [PMID: 31291448 DOI: 10.1093/biolre/ioz109] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 02/20/2019] [Accepted: 07/08/2019] [Indexed: 12/27/2022] Open
Abstract
Evidence indicates that microRNAs (miRNAs) play essential roles in early embryonic development. The miRNA-518 family is a special biomarker of the placenta, and miRNA-518b is abnormally expressed in placental tissue in preeclampsia. Early growth response protein 1 (EGR1), a zinc finger transcriptional factor, plays an essential role in regulating cell differentiation, angiogenesis, and migration. Moreover, earlier studies have shown that EGR1 protein plays a key role in implantation. However, little is known about the role of miR-518b and EGR1 on early embryonic arrest (EEA) in humans. In our study, increased miR-518b along with decreased EGR1 was found in human villus tissues with EEA. Furthermore, we demonstrated by luciferase assay that miR-518b is a direct regulator of EGR1. After comparing the effect of silencing EGR1, vascular endothelial growth factor (VEGF) individually, and EGR1/VEGF in combination, we found that EGR1 can inhibit migration and angiogenesis of HTR-8 SVneo cells by decreasing the VEGF expression. Hypoxia plays an initial role in early embryonic development, and we found that hypoxia reduces the expression of miR-518b and increases the expression of EGR1 and VEGF to facilitate migration and angiogenesis in a hypoxic model of HTR-8/SVneo cell line. Our findings provide new insights into the role of miR-518b in EEA and implicate the potential application of miR-518b in the diagnosis and development of intervention for EEA.
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Affiliation(s)
- Wenmei Yang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Zhaoyi Lu
- The First People's Hospital Of Nanning, Nanning, Guangxi, China
| | - Zhifu Zhi
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Liling Liu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Lingjie Deng
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xiaoli Jiang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Lihong Pang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
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17
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Salilew-Wondim D, Gebremedhn S, Hoelker M, Tholen E, Hailay T, Tesfaye D. The Role of MicroRNAs in Mammalian Fertility: From Gametogenesis to Embryo Implantation. Int J Mol Sci 2020; 21:ijms21020585. [PMID: 31963271 PMCID: PMC7014195 DOI: 10.3390/ijms21020585] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 12/11/2022] Open
Abstract
The genetic codes inscribed during two key developmental processes, namely gametogenesis and embryogenesis, are believed to determine subsequent development and survival of adult life. Once the embryo is formed, its further development mainly depends on its intrinsic characteristics, maternal environment (the endometrial receptivity), and the embryo–maternal interactions established during each phase of development. These developmental processes are under strict genetic regulation that could be manifested temporally and spatially depending on the physiological and developmental status of the cell. MicroRNAs (miRNAs), one of the small non-coding classes of RNAs, approximately 19–22 nucleotides in length, are one of the candidates for post-transcriptional developmental regulators. These tiny non-coding RNAs are expressed in ovarian tissue, granulosa cells, testis, oocytes, follicular fluid, and embryos and are implicated in diverse biological processes such as cell-to-cell communication. Moreover, accumulated evidences have also highlighted that miRNAs can be released into the extracellular environment through different mechanisms facilitating intercellular communication. Therefore, understanding miRNAs mediated regulatory mechanisms during gametogenesis and embryogenesis provides further insights about the molecular mechanisms underlying oocyte/sperm formation, early embryo development, and implantation. Thus, this review highlights the role of miRNAs in mammalian gametogenesis and embryogenesis and summarizes recent findings about miRNA-mediated post-transcriptional regulatory mechanisms occurring during early mammalian development.
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Affiliation(s)
- Dessie Salilew-Wondim
- Institute of Animal Sciences, Animal Breeding and Husbandry, University of Bonn, Endenicher Allee 15, 53115 Bonn, Germany; (D.S.-W.); (M.H.); (E.T.); (T.H.)
| | - Samuel Gebremedhn
- Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, 1351 Rampart Rd, Fort Collins, CO 80523, USA;
| | - Michael Hoelker
- Institute of Animal Sciences, Animal Breeding and Husbandry, University of Bonn, Endenicher Allee 15, 53115 Bonn, Germany; (D.S.-W.); (M.H.); (E.T.); (T.H.)
- Teaching and Research Station Frankenforst, Faculty of Agriculture, University of Bonn, 53639 Königswinter, Germany
| | - Ernst Tholen
- Institute of Animal Sciences, Animal Breeding and Husbandry, University of Bonn, Endenicher Allee 15, 53115 Bonn, Germany; (D.S.-W.); (M.H.); (E.T.); (T.H.)
| | - Tsige Hailay
- Institute of Animal Sciences, Animal Breeding and Husbandry, University of Bonn, Endenicher Allee 15, 53115 Bonn, Germany; (D.S.-W.); (M.H.); (E.T.); (T.H.)
| | - Dawit Tesfaye
- Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, 1351 Rampart Rd, Fort Collins, CO 80523, USA;
- Correspondence: ; Tel.: +1-530-564-2806
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18
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Bortolotti D, Soffritti I, D'Accolti M, Gentili V, Di Luca D, Rizzo R, Caselli E. HHV-6A Infection of Endometrial Epithelial Cells Affects miRNA Expression and Trophoblast Cell Attachment. Reprod Sci 2020; 27:779-786. [PMID: 32046402 PMCID: PMC7077927 DOI: 10.1007/s43032-019-00102-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 08/13/2019] [Indexed: 02/07/2023]
Abstract
We recently reported that human herpesvirus 6 (HHV-6) infection is frequently present in endometrial tissue of women with unexplained infertility, and that virus infection induces a profound remodulation of miRNA expression in human cells of different origin. Since specific miRNA patterns have been associated with specific pregnancy outcomes, we aimed to analyze the impact of HHV-6A infection on miRNAs expression and trophoblast receptivity in human endometrial cells. To this purpose, a human endometrial cell line (HEC-1A) was infected with HHV-6A and analyzed for alterations in the expression of miRNAs and for permissiveness to the attachment of a human choriocarcinoma trophoblast cell line (JEG-3). The results showed that HHV-6A infection of endometrial cells up-modulates miR22 (26-fold), miR15 (19.5-fold), and miR196-5p (12.1 fold), that are correlated with implant failure, and down-modulates miR18 (11.4 fold), miR101-3p (4.6 fold), miR181-5p (4.9 fold), miR92 (3.3 fold), and miR1207-5p (3.9 fold), characterized by a low expression in preeclampsia. Moreover, HHV-6A-infected endometrial cells infected resulted less permissive to the attachment of trophoblast cells. In conclusion, collected data suggest that HHV-6A infection could modify miRNA expression pattern and control of trophoblast cell adhesion of endometrial cells, undermining a correct trophoblast cell attachment on endometrial cells.
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Affiliation(s)
- Daria Bortolotti
- Section of Microbiology and Medical Genetics, Department of Medical Sciences, University of Ferrara, via Luigi Borsari 46, 44121, Ferrara, Italy
| | - Irene Soffritti
- Section of Microbiology and Medical Genetics, Department of Medical Sciences, University of Ferrara, via Luigi Borsari 46, 44121, Ferrara, Italy
| | - Maria D'Accolti
- Section of Microbiology and Medical Genetics, Department of Medical Sciences, University of Ferrara, via Luigi Borsari 46, 44121, Ferrara, Italy
| | - Valentina Gentili
- Section of Microbiology and Medical Genetics, Department of Medical Sciences, University of Ferrara, via Luigi Borsari 46, 44121, Ferrara, Italy
| | - Dario Di Luca
- Section of Microbiology and Medical Genetics, Department of Medical Sciences, University of Ferrara, via Luigi Borsari 46, 44121, Ferrara, Italy
| | - Roberta Rizzo
- Section of Microbiology and Medical Genetics, Department of Medical Sciences, University of Ferrara, via Luigi Borsari 46, 44121, Ferrara, Italy
| | - Elisabetta Caselli
- Section of Microbiology and Medical Genetics, Department of Medical Sciences, University of Ferrara, via Luigi Borsari 46, 44121, Ferrara, Italy.
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19
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Wang LP, Peng XY, Lv XQ, Liu L, Li XL, He X, Lv F, Pan Y, Wang L, Liu KF, Zhang XM. High throughput circRNAs sequencing profile of follicle fluid exosomes of polycystic ovary syndrome patients. J Cell Physiol 2019; 234:15537-15547. [PMID: 30779115 DOI: 10.1002/jcp.28201] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/04/2019] [Accepted: 01/10/2019] [Indexed: 01/24/2023]
Abstract
Polycystic ovary syndrome (PCOS) is one of the most prevalent reproductive disorders in women worldwide. Despite rigorous research, the exact molecular mechanism that governs PCOS pathogenesis remains unclear. To investigate the potential roles of circular RNAs (circRNAs), this study sequenced ribosomal RNA-depleted total RNA from exosomes of follicle fluids obtained from PCOS patients using non-PCOS samples as controls. Bioinformatic analysis identified 167 upregulated and 245 downregulated circRNAs from a total of 16,771 detected candidates. Functional analysis suggests that pathways related to bacterial infection, associated chronic inflammation, and oxidative stress could be targeted by the differential circRNAs in PCOS patients. The obtained sequencing results were further validated by quantitative reverse-transcription polymerase chain reaction and a circRNA-microRNA interaction network was constructed. The obtained results provide a valuable addition to the published studies on the mechanism of PCOS pathogenesis by revealing a wide variety of new circRNAs, miRNA, and gene targets that merit further investigation.
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Affiliation(s)
- Li-Ping Wang
- Department of Biobank, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China.,Northern Jiangsu People's Hospital, Yangzhou University, Yangzhou, Jiangsu, China.,Institute of Epigenetics and Epigenomics, College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xiao-Yu Peng
- Northern Jiangsu People's Hospital, Yangzhou University, Yangzhou, Jiangsu, China.,Department of Obstetrics and Gynecology, Reproductive Medicine Center, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xiao-Qin Lv
- Northern Jiangsu People's Hospital, Yangzhou University, Yangzhou, Jiangsu, China.,Department of Obstetrics and Gynecology, Reproductive Medicine Center, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Lin Liu
- Northern Jiangsu People's Hospital, Yangzhou University, Yangzhou, Jiangsu, China.,Department of Obstetrics and Gynecology, Reproductive Medicine Center, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xue-Li Li
- Northern Jiangsu People's Hospital, Yangzhou University, Yangzhou, Jiangsu, China.,Department of Obstetrics and Gynecology, Reproductive Medicine Center, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xiao He
- Northern Jiangsu People's Hospital, Yangzhou University, Yangzhou, Jiangsu, China.,Department of Obstetrics and Gynecology, Reproductive Medicine Center, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Fang Lv
- Northern Jiangsu People's Hospital, Yangzhou University, Yangzhou, Jiangsu, China.,Department of Obstetrics and Gynecology, Reproductive Medicine Center, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Yu Pan
- Northern Jiangsu People's Hospital, Yangzhou University, Yangzhou, Jiangsu, China.,Department of Obstetrics and Gynecology, Reproductive Medicine Center, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Li Wang
- Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Kai-Feng Liu
- Northern Jiangsu People's Hospital, Yangzhou University, Yangzhou, Jiangsu, China.,Department of Obstetrics and Gynecology, Reproductive Medicine Center, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xiao-Mei Zhang
- Northern Jiangsu People's Hospital, Yangzhou University, Yangzhou, Jiangsu, China.,Department of Obstetrics and Gynecology, Reproductive Medicine Center, Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
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20
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Reza AMMT, Choi YJ, Han SG, Song H, Park C, Hong K, Kim JH. Roles of microRNAs in mammalian reproduction: from the commitment of germ cells to peri-implantation embryos. Biol Rev Camb Philos Soc 2018; 94:415-438. [PMID: 30151880 PMCID: PMC7379200 DOI: 10.1111/brv.12459] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 07/25/2018] [Accepted: 07/27/2018] [Indexed: 12/15/2022]
Abstract
MicroRNAs (miRNAs) are active regulators of numerous biological and physiological processes including most of the events of mammalian reproduction. Understanding the biological functions of miRNAs in the context of mammalian reproduction will allow a better and comparative understanding of fertility and sterility in male and female mammals. Herein, we summarize recent progress in miRNA‐mediated regulation of mammalian reproduction and highlight the significance of miRNAs in different aspects of mammalian reproduction including the biogenesis of germ cells, the functionality of reproductive organs, and the development of early embryos. Furthermore, we focus on the gene expression regulatory feedback loops involving hormones and miRNA expression to increase our understanding of germ cell commitment and the functioning of reproductive organs. Finally, we discuss the influence of miRNAs on male and female reproductive failure, and provide perspectives for future studies on this topic.
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Affiliation(s)
- Abu Musa Md Talimur Reza
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Centre (SRC), Konkuk University, Seoul, 143-701, Republic of Korea
| | - Yun-Jung Choi
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Centre (SRC), Konkuk University, Seoul, 143-701, Republic of Korea
| | - Sung Gu Han
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul, 05029, Republic of Korea
| | - Hyuk Song
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Centre (SRC), Konkuk University, Seoul, 143-701, Republic of Korea
| | - Chankyu Park
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Centre (SRC), Konkuk University, Seoul, 143-701, Republic of Korea
| | - Kwonho Hong
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Centre (SRC), Konkuk University, Seoul, 143-701, Republic of Korea
| | - Jin-Hoi Kim
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Centre (SRC), Konkuk University, Seoul, 143-701, Republic of Korea
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21
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Kumar V, Soni UK, Maurya VK, Singh K, Jha RK. Integrin beta8 (ITGB8) activates VAV-RAC1 signaling via FAK in the acquisition of endometrial epithelial cell receptivity for blastocyst implantation. Sci Rep 2017; 7:1885. [PMID: 28507287 PMCID: PMC5432530 DOI: 10.1038/s41598-017-01764-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 04/06/2017] [Indexed: 12/02/2022] Open
Abstract
Integrin beta8 (ITGB8) is involved in the endometrial receptivity. The blastocyst first interacts with the luminal endometrial epithelial cells during its implantation; therefore, we have investigated the signaling of ITGB8 via FAK and VAV-RAC1 in the endometrial epithelial cells. Integrin beta8 was found elevated in epithelial cells at late-pre-receptive (day4, 1600 h) and receptive (day5, 0500 h) stages of endometrial receptivity period in the mouse. Integrins downstream molecule FAK has demonstrated an increased expression and phosphorylation (Y397) in the endometrium as well as in the isolated endometrial epithelial cells during receptive and post-receptive stages. Integrin beta8 can functionally interact with FAK, VAV and RAC1 as the levels of phosphorylated-FAK, and VAV along with the RAC-GTP form was reduced after ITGB8 knockdown in the endometrial epithelial cells and uterus. Further, VAV and RAC1 were seen poorly active in the absence of FAK activity, suggesting a crosstalk of ITGB8 and FAK for VAV and RAC1 activation in the endometrial epithelial cells. Silencing of ITGB8 expression and inhibition of FAK activity in the Ishikawa cells rendered poor attachment of JAr spheroids. In conclusion, ITGB8 activates VAV-RAC1 signaling axis via FAK to facilitate the endometrial epithelial cell receptivity for the attachment of blastocyst.
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Affiliation(s)
- Vijay Kumar
- Division of Endocrinology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, U.P., India
| | - Upendra Kumar Soni
- Division of Endocrinology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, U.P., India
| | - Vineet Kumar Maurya
- Division of Endocrinology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, U.P., India
| | - Kiran Singh
- Department of Molecular & Human Genetics, Banaras Hindu University (BHU), Varanasi, UP, India
| | - Rajesh Kumar Jha
- Division of Endocrinology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, U.P., India.
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22
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Zhao L, Du X, Huang K, Zhang T, Teng Z, Niu W, Wang C, Xia G. Rac1 modulates the formation of primordial follicles by facilitating STAT3-directed Jagged1, GDF9 and BMP15 transcription in mice. Sci Rep 2016; 6:23972. [PMID: 27050391 PMCID: PMC4822123 DOI: 10.1038/srep23972] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/01/2016] [Indexed: 11/17/2022] Open
Abstract
The size of the primordial follicle pool determines the reproductive potential of mammalian females, and establishment of the pool is highly dependent on specific genes expression. However, the molecular mechanisms by which the essential genes are regulated coordinately to ensure primordial follicle assembly remain a mystery. Here, we show that the small GTPase Rac1 plays an indispensable role in controlling the formation of primordial follicles in mouse ovary. Employing fetal mouse ovary organ culture system, we demonstrate that disruption of Rac1 retarded the breakdown of germline cell cysts while Rac1 overexpression accelerated the formation of primordial follicles. In addition, in vivo inhibitor injection resulted in the formation of multi-oocyte follicles. Subsequent investigation showed that Rac1 induced nuclear import of STAT3 by physical binding. In turn, nuclear STAT3 directly activated the transcription of essential oocyte-specific genes, including Jagged1, GDF9, BMP15 and Nobox. Further, GDF9 and BMP15 regulated the translation of Notch2 via mTORC1 activation in pregranulosa cells. Overexression or addition of Jagged1, GDF9 and BMP15 not only reversed the effect of Rac1 disruption, but also accelerated primordial follicle formation via Notch2 signaling activation. Collectively, these results indicate that Rac1 plays important roles as a key regulator in follicular assembly.
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Affiliation(s)
- Lihua Zhao
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Xinhua Du
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Kun Huang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Tuo Zhang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Zhen Teng
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Wanbao Niu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Chao Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Guoliang Xia
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
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23
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Liu W, Niu Z, Li Q, Pang RTK, Chiu PCN, Yeung WSB. MicroRNA and Embryo Implantation. Am J Reprod Immunol 2015; 75:263-71. [PMID: 26707514 DOI: 10.1111/aji.12470] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 11/29/2015] [Indexed: 12/20/2022] Open
Abstract
PROBLEM In mammals, implantation involves interactions between an activated blastocyst and a receptive endometrium. There are controversies on the role of microRNAs in preimplantation embryo development. The actions of endometrial microRNAs on implantation are beginning to be understood. METHOD OF STUDY Review of literature on microRNAs in preimplantation embryos and endometrium. RESULTS Emerging evidence suggests a role of microRNAs in blastocyst activation and implantation. Differential expression of microRNAs is found between receptive and non-receptive endometria. Members of the let-7, miR-200, miR-30 families, and the miR-17-92 clusters are more commonly found to be associated with endometrial receptivity. Experimental studies show that the targets of the differentially expressed microRNAs affect endometrial receptivity, decidualization, and embryo implantation. Free and exosome/microvesicle containing microRNAs have been detected in human and ovine uterine luminal fluid (ULF). They may serve as mediators of embryo-endometrium dialog. Some observations suggest that the microRNAs in ULF may be used as biomarkers in infertility treatment. CONCLUSION MicroRNAs in endometrium and blastocysts are involved in the implantation process.
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Affiliation(s)
- Weimin Liu
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.,Shenzhen Institute of Research and Innovation, University of Hong Kong, Shenzhen, China
| | - Ziru Niu
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Qian Li
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Ronald T K Pang
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Philip C N Chiu
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.,ShenZhen Key Laboratory of Fertility Regulation, Shenzhen Hospital, The University of Hong Kong, Shenzhen, China
| | - William Shu-Biu Yeung
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.,Shenzhen Institute of Research and Innovation, University of Hong Kong, Shenzhen, China.,ShenZhen Key Laboratory of Fertility Regulation, Shenzhen Hospital, The University of Hong Kong, Shenzhen, China
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