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Lou Y, Pinel L, Dufort D. Uterine WNTS modulates fibronectin binding activity required for blastocyst attachment through the WNT/CA 2+ signaling pathway in mice. Reprod Biol Endocrinol 2023; 21:85. [PMID: 37715251 PMCID: PMC10503100 DOI: 10.1186/s12958-023-01135-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 09/08/2023] [Indexed: 09/17/2023] Open
Abstract
Adhesion of the implanting blastocyst involves the interaction between integrin proteins expressed by trophoblast cells and components present in the basement membrane of the endometrial luminal epithelium. Although several factors regulating integrins and their adhesion to fibronectin are already known, we showed that Wnt signaling is involved in the regulation of blastocyst adhesion through the trafficking of integrins expressed by trophoblast cells. Localization of Itgα5β1 by immunofluorescence and FN-binding assays were conducted on peri-implantation blastocysts treated with either Wnt5a or Wnt7a proteins. Both Wnt5a and Wnt7a induced a translocation of Itgα5β1 at the surface of the blastocyst and an increase in FN-binding activity. We further demonstrated that uterine fluid is capable of inducing integrin translocation and this activity can be specifically inhibited by the Wnt inhibitor sFRP2. To identify the Wnt signaling pathway involved in this activity, blastocysts were incubated with inhibitors of either p38MAPK, PI3K pathway or CamKII prior to the addition of Wnts. Whereas inhibition of p38MAPK and PI3K had not effect, inhibition of CamKII reduced FN-binding activity induced by Wnts. Finally, we demonstrated that inhibition of Wnts by sFRP2 reduced the binding efficiency of the blastocyst to uterine epithelial cells. Our findings provide new insight into the mechanism that regulates integrin trafficking and FN-binding activity and identifies Wnts as a key player in blastocyst attachment to the uterine epithelium.
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Affiliation(s)
- Yuefei Lou
- Department of Obstetrics and Gynecology, McGill University, Montreal, QC, H4A 3J1, Canada
- Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Laurie Pinel
- Department of Obstetrics and Gynecology, McGill University, Montreal, QC, H4A 3J1, Canada
- Child Health and Human Development Program, Montreal, QC, H4A 3J1, Canada
- Research Institute of the McGill University Health Centre, Montreal, QC, H4A 3J1, Canada
| | - Daniel Dufort
- Department of Obstetrics and Gynecology, McGill University, Montreal, QC, H4A 3J1, Canada.
- Child Health and Human Development Program, Montreal, QC, H4A 3J1, Canada.
- Research Institute of the McGill University Health Centre, Montreal, QC, H4A 3J1, Canada.
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2
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Gonzalez Fernandez J, Moncayo Arlandi J, Ochando A, Simon C, Vilella F. The role of extracellular vesicles in intercellular communication in human reproduction. Clin Sci (Lond) 2023; 137:281-301. [PMID: 36762584 DOI: 10.1042/cs20220793] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/19/2023] [Accepted: 01/30/2023] [Indexed: 02/11/2023]
Abstract
Embryo-maternal cross-talk has emerged as a vitally important process for embryo development and implantation, which is driven by secreted factors and extracellular vesicles (EVs). The EV cargo of bioactive molecules significantly influences target cells and primes them for critical stages of reproductive biology, including embryo development, adhesion, and implantation. Recent research has suggested that EVs and their cargo represent a powerful non-invasive tool that can be leveraged to assess embryo and maternal tissue quality during assisted reproduction treatments. Here, we review the current scientific literature regarding the intercellular cross-talk between embryos and maternal tissues from fertilization to implantation, focusing on human biology and signaling mechanisms identified in animal models.
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Affiliation(s)
- Javier Gonzalez Fernandez
- Carlos Simon Foundation, INCLIVA Health Research Institute, C/ Eduardo Primo Yúfera 3, 46012, Valencia, Spain
| | - Javier Moncayo Arlandi
- Carlos Simon Foundation, INCLIVA Health Research Institute, C/ Eduardo Primo Yúfera 3, 46012, Valencia, Spain
| | - Ana Ochando
- Carlos Simon Foundation, INCLIVA Health Research Institute, C/ Eduardo Primo Yúfera 3, 46012, Valencia, Spain
| | - Carlos Simon
- Carlos Simon Foundation, INCLIVA Health Research Institute, C/ Eduardo Primo Yúfera 3, 46012, Valencia, Spain
| | - Felipe Vilella
- Carlos Simon Foundation, INCLIVA Health Research Institute, C/ Eduardo Primo Yúfera 3, 46012, Valencia, Spain
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3
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Chen Y, Meng Y, Yu Y, Li W, Shen Y, Li S, Chang Y, Sun W. LMO2 plays differential roles in trophoblast subtypes and is associated with preeclampsia. Biochem Biophys Res Commun 2022; 604:43-50. [DOI: 10.1016/j.bbrc.2022.03.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 03/07/2022] [Indexed: 11/25/2022]
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4
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Bu LG, Sun Y, Li TY, Kong LL, Yu HN, Li SJ, Ding NZ, Ni H. Peri-implantation expression and regulation of ITGB8 in goat uterus. Theriogenology 2021; 180:130-136. [PMID: 34973644 DOI: 10.1016/j.theriogenology.2021.12.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 12/05/2021] [Accepted: 12/16/2021] [Indexed: 02/01/2023]
Abstract
Ruminants have a superficial implantation pattern. The extended conceptus attaches to the receptive endometrium to form the cotyledonary placenta. During the attachment, a large number of events occur at the maternal-fetal interface. However, the related molecular mechanisms have not been fully understood. Integrin beta8 (ITGB8) is a subunit of integrin beta involved in embryo implantation. In this study, we determined peri-implantation expression and regulation of ITGB8 in goat uterus. The mRNA and protein levels of ITGB8 were both high in goat endometrial luminal epithelium (LE) and superficial glandular epithelium (sGE) during the adhesion period (Days 16-19 of pregnancy). Such expression profile was opposite to that of microRNA-187 (miR-187). Then, we validated that miR-187 targeted the 3' untranslated region (UTR) of ITGB8 in primary goat endometrial epithelial cells (EECs). In EECs, inhibition of miR-187 resulted in not only up-regulated ITGB8 level but also reduced cell proliferation and focal adhesion kinase (FAK) activity. Moreover, ITGB8 and miR-187 were regulated by interferon tau (IFNT). Altogether, in goat, the miR-187/ITGB8 axis may be involved in conceptus attachment and is downstream of IFNT. Our results will help us better understand the mechanisms of ruminant implantation and may provide a useful tool to improve the reproduction ratio for ruminants.
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Affiliation(s)
- Li-Ge Bu
- The Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin, 150030, China
| | - Ya Sun
- The Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin, 150030, China
| | - Ting-Yue Li
- The Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin, 150030, China
| | - Li-Li Kong
- The Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin, 150030, China
| | - Hao-Nan Yu
- The Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin, 150030, China
| | - Shi-Jie Li
- The Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin, 150030, China
| | - Nai-Zheng Ding
- Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Science, Shandong Normal University, Jinan, 250014, China
| | - Hua Ni
- The Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin, 150030, China.
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5
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Verma RK, Soni UK, Chadchan SB, Maurya VK, Soni M, Sarkar S, Pratap JV, Jha RK. miR-149-PARP-2 Signaling Regulates E-cadherin and N-cadherin Expression in the Murine Model of Endometrium Receptivity. Reprod Sci 2021; 29:975-992. [PMID: 34460092 DOI: 10.1007/s43032-021-00710-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 07/30/2021] [Indexed: 10/20/2022]
Abstract
Cadherins play an essential role in the attachment of the blastocyst to the endometrium, a process known as endometrial receptivity. Loss of E-cadherin expression is essential during the process, while the expression level of the other cadherin, N-cadherin, has been reported to be altered in cases of infertility. Both E-cadherin and N-cadherin can be regulated by members of the PARP family. Specifically, PARP-2, which is under the epigenetic control of miR-149, has been observed to promote E-cadherin expression in other human cells. We investigated the roles of E-cadherin and N-cadherin in endometrial receptivity using mouse models for normal endometrial receptivity, pseudopregnancy, and LPS-induced endometrial receptivity failure. E-cadherin and phosphorylated E-cadherin were predominantly expressed during pre-receptive stages as well as in the implantation site of the receptive stage, which were observed reduced during the later stages of implantation in both implantation and non-implantation regions, while N-cadherin was detected only at pre-receptive stages. E-cadherin and N-cadherin were also seen in the uterus during pseudopregnancy, showing a downregulation trend during receptive and post-receptive stages. LPS-induced failed endometrial receptivity showed upregulation of E-cadherin and downregulation of N-cadherin. The E-cadherin expression promoter, GSK-3, was lost and its suppressor, SLUG was upregulated during normal course of endometrial receptivity in mouse model, while GSK-3 was increased during LPS-induced failed embryo implantation. In an in vitro model of embryo implantation, E-cadherin expression is promoted by PARP-2 and regulated by miR-149 epigenetically in human endometrium epithelial cells. In conclusion, E-cadherin is predominantly expressed during pre-receptive stage and promoted by PARP-2, which is regulated by miR-149 in the endometrial epithelial cells.
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Affiliation(s)
- Raj Kumar Verma
- Female Reproductive Biology Laboratory, Division of Endocrinology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India
| | - Upendra Kumar Soni
- Female Reproductive Biology Laboratory, Division of Endocrinology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India
| | - Sangappa Basanna Chadchan
- Female Reproductive Biology Laboratory, Division of Endocrinology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India
| | - Vineet Kumar Maurya
- Female Reproductive Biology Laboratory, Division of Endocrinology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India
| | - Mohini Soni
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India
| | - Sudarsan Sarkar
- Female Reproductive Biology Laboratory, Division of Endocrinology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, UP, India
| | - J Venkatesh Pratap
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, UP, India
| | - Rajesh Kumar Jha
- Female Reproductive Biology Laboratory, Division of Endocrinology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, UP, India.
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6
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Pan X, Noguchi S, Ando M, Nishimura T, Tomi M. MicroRNA-126 suppresses the invasion of trophoblast-model JEG-3 cells by targeting LIN28A. Biochem Biophys Res Commun 2021; 545:132-137. [PMID: 33548626 DOI: 10.1016/j.bbrc.2021.01.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 01/22/2021] [Indexed: 10/22/2022]
Abstract
Inadequate trophoblast invasion and impaired trophoblast-induced vascular remodeling are features of preeclampsia. In this context, an angiogenesis-related microRNA, miR-126, is abnormally expressed in preeclampsia placentas, but its role in trophoblast development remains unclear. The purpose of this study was to investigate the roles of miR-126 in the proliferation, migration, and invasion processes of trophoblast cells using the human choriocarcinoma-derived JEG-3 cell line as a model. The mRNA expression profiling of JEG-3 cells with and without miR-126 overexpression, in combination with bioinformatics analysis, identified LIN28A as a putative target of miR-126. The results of real-time RT-PCR and luciferase assay were consistent with this idea. Overexpression of miR-126 in JEG-3 cells decreased the invasive ability of the cells without affecting proliferation or migration. The invasiveness of JEG-3 cells was significantly reduced to a similar extent by knockdown of LIN28A with siRNA and by miR-126-overexpression-induced downregulation of LIN28A, although the level of LIN28A protein was much lower in the siLIN28A-transfected cells. These results indicate that miR-126 suppresses JEG-3 cell invasion by targeting LIN28A, and suggest that miR-126-mediated downregulation of LIN28A might contribute to the onset/deterioration of preeclampsia.
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Affiliation(s)
- Xiaole Pan
- Division of Pharmaceutics, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, 105-8512, Japan
| | - Saki Noguchi
- Division of Pharmaceutics, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, 105-8512, Japan
| | - Misuzu Ando
- Division of Pharmaceutics, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, 105-8512, Japan
| | - Tomohiro Nishimura
- Division of Pharmaceutics, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, 105-8512, Japan
| | - Masatoshi Tomi
- Division of Pharmaceutics, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, 105-8512, Japan.
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7
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Chen D, Zheng K, Wu H, Zhang X, Ye W, Tan X, Xiong Y. Lin28a attenuates cerebral ischemia/reperfusion injury through regulating Sirt3-induced autophagy. Brain Res Bull 2021; 170:39-48. [PMID: 33548334 DOI: 10.1016/j.brainresbull.2021.01.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/24/2021] [Accepted: 01/31/2021] [Indexed: 12/17/2022]
Abstract
Cerebral ischemia-reperfusion injury causes damage to local brain tissue and its function, but its specific pathogenesis is still unclear. Autophagy is an important catabolic pathway in eukaryotic cells, which is mainly used to remove damaged intracellular organelles, misfolded long-acting macromolecules and participate in cerebral ischemia-reperfusion injury. Lin28 is a highly conserved RNA-binding protein that plays a role in regulating gene translation, which is important for the growth and maintenance of pluripotent cells. Lin28a has been reported to have a clear protective effect on post-ischemic reperfusion injury of the heart. However, whether Lin28a has an effect on nerve injury after cerebral ischemia-reperfusion needs further study. In this study, we found that the expression of Lin28a was decreased in cerebral ischemia-reperfusion mice model. Upregulation of Lin28a could alleviate the nerve injury caused by ischemia-reperfusion, and promote autophagy of nerve cells. Upregulation of Lin28a reduced nerve cell apoptosis and relieved nerve cell injure induced by oxygen-glucose deprivation/reoxygenation. Lin28a increased the LC3-II levels in nerve cells, suggesting the promotion of autophagy. Mechanism studies indicated that Lin28a promoted autophagy mainly through regulating Sirt3 expression and activating AMPK-mTOR pathway. In conclusion, our study revealed the important role of Lin28a in cerebral ischemia-reperfusion and suggested that Lin28a was a protective factor for cerebral ischemia-induced injury.
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Affiliation(s)
- Donghai Chen
- Department of Neurosurgery, Hengdian Wenrong Hospital, Jinhua City, Zhejiang Province, 322118,China
| | - Kuang Zheng
- Department of Neurosurgery, The Frist Affiliated Hospital of Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325000, China
| | - Henggang Wu
- Department of Neurosurgery, Hengdian Wenrong Hospital, Jinhua City, Zhejiang Province, 322118,China
| | - Xuchun Zhang
- Department of Neurosurgery, Hengdian Wenrong Hospital, Jinhua City, Zhejiang Province, 322118,China
| | - Wangyang Ye
- Department of Neurosurgery, The Frist Affiliated Hospital of Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325000, China
| | - Xianxi Tan
- Department of Neurosurgery, The Frist Affiliated Hospital of Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325000, China
| | - Ye Xiong
- Department of Neurosurgery, The Frist Affiliated Hospital of Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325000, China.
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8
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Jiang NX, Li XL. The Complicated Effects of Extracellular Vesicles and Their Cargos on Embryo Implantation. Front Endocrinol (Lausanne) 2021; 12:681266. [PMID: 34149619 PMCID: PMC8213030 DOI: 10.3389/fendo.2021.681266] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 05/18/2021] [Indexed: 12/15/2022] Open
Abstract
As a rate-limiting step in pregnancy, embryo implantation is highly dependent on intercellular communication. Extracellular vesicles (EVs) are newly identified to be important in the course of intercellular communication. EVs have been isolated from a wide variety of biofluids and tissues, including plasma, liver, uterine, semen, embryo, etc. The present and future use of EVs not only as biomarkers, but also as targeting drug delivery system, is promisingly pave the way for advanced comprehension of implantation failure in reproductive diseases. However, as the precise mechanisms of EVs in embryo implantation has not been elucidated yet. Herein, we summarize the current knowledge on the diverse effects of EVs from various sources and their cargos such as microRNA, long non-coding RNA, protein, etc. on embryo implantation, and the potential mechanisms of EVs in reproductive diseases such as recurrent implantation failure, polycystic ovary syndrome and endometriosis. It is essential to note that many of the biologically plausible functions of EVs in embryo implantation discussed in present literatures still need further research in vivo.
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Affiliation(s)
- Nan-Xing Jiang
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Xue-Lian Li
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
- *Correspondence: Xue-Lian Li,
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9
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Yang Z, Deng Y, Zhang K, Bai Y, Zhu J, Zhang J, Cheng J, Li L, He J, Wang W. LIN28A polymorphisms and hepatoblastoma susceptibility in Chinese children. J Cancer 2021; 12:1373-1378. [PMID: 33531982 PMCID: PMC7847658 DOI: 10.7150/jca.52621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 12/07/2020] [Indexed: 02/07/2023] Open
Abstract
Hepatoblastoma (HB) is the most prevalent primary hepatic cancer in children aged 6 months to 3 years. LIN28A is recurrently mutated in various diseases, and critically involved in tumorigenesis. However, a limited number of studies have examined the involvement of LIN28A polymorphisms in HB risk. We used the TaqMan assay to genotype four LIN28A polymorphisms (rs3811464 G>A, rs3811463 T>C, rs34787247 G>A, and rs11247957 G>A) in 275 Chinese children with HB and 1018 cancer-free controls from five medical centers in China. Their association with HB risk was evaluated on the basis of odds ratio (OR) and corresponding 95% confidence interval (CI). Overall, no significant associations were found in single locus and combine analysis. Interestingly, in the stratified analysis, we found that subjects with 1-3 risk genotypes were more likely to develop HB in patients ≥17 months of age (adjusted OR=1.76, 95% CI=1.04-2.98, P=0.034). The rs3811464 GA/AA genotypes were associated with decrease HB risk in patients with clinical stage III+IV disease (adjusted OR=0.50, 95% CI=0.26-0.96, P=0.038). Our results suggest that the LIN28A polymorphisms have a weak association with HB susceptibility in the Chinese children. LIN28A rs3811464 G>A may decrease HB risk in stage III+IV patients which need further validations with larger samples and different ethnicities.
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Affiliation(s)
- Zhonghua Yang
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning, China
| | - Yuyao Deng
- Department of Clinical Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Keren Zhang
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning, China
| | - Yuzuo Bai
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning, China
| | - Jinhong Zhu
- Department of Clinical Laboratory, Biobank, Harbin Medical University Cancer Hospital, Harbin 150040, Heilongjiang, China
| | - Jiao Zhang
- Department of Pediatric Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Jiwen Cheng
- Department of Pediatric Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi, China
| | - Li Li
- Kunming Key Laboratory of Children Infection and Immunity, Yunnan Key Laboratory of Children's Major Disease Research, Yunnan Institute of Pediatrics Research, Yunnan Medical Center for Pediatric Diseases, Kunming Children's Hospital, Kunming 650228, Yunnan, China
| | - Jing He
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
- ✉ Corresponding author: Weilin Wang, Department of Pediatric Surgery, Shengjing Hospital of China Medical University, 36 Sanhao Street, Heping District, Shenyang110004, Liaoning, China, ; or Jing He, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Road, Guangzhou 510623, Guangdong, China,
| | - Weilin Wang
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning, China
- ✉ Corresponding author: Weilin Wang, Department of Pediatric Surgery, Shengjing Hospital of China Medical University, 36 Sanhao Street, Heping District, Shenyang110004, Liaoning, China, ; or Jing He, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Road, Guangzhou 510623, Guangdong, China,
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10
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Li Q, Shi J, Liu W. The role of Wnt/β-catenin-lin28a/let-7 axis in embryo implantation competency and epithelial-mesenchymal transition (EMT). Cell Commun Signal 2020; 18:108. [PMID: 32650795 PMCID: PMC7353806 DOI: 10.1186/s12964-020-00562-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 03/23/2020] [Indexed: 12/30/2022] Open
Abstract
Background The pre-implantation embryo in a competent status and post-implantation fully differentiation of the inner cell mass (ICM) and trophectoderm (TE) are prerequisites of successful implantation. Type I embryonic epithelial-mesenchymal transition (EMT) involves in these processes. A high level of the mir-let-7 family was found in the dormant mouse embryo of implantation failure in our previous study. Besides, its natural inhibitor lin28a was found to function in maintained stem cell pluripotency and involved in early embryo nucleolus construction. Until now, few studies got involved in the exact molecular mechanism that affects embryo implantation potential. In this study, the possible function of Wnt/β-catenin-lin28a/let-7 pathway in mouse embryo implantation was studied. Methods ICR mouse, Lin28a/Let-7 g transgenic mice (Lin28a-TG/Let-7 g-TG), and implanting dormant mice models were used for the study. Results Wnt/β-catenin signaling is essential in embryo implantation, which promotes embryo implantation through directly trigger lin28a expression, thus represses the mir-let-7 family. Lin28a and mir-let-7 both participate in implantation via an inverse function. Lin28a and mir-let-7 participate in embryo implantation through embryonic EMT. Conclusions Wnt/β-catenin signaling promotes embryo implantation and accompanying embryonic EMT, which is mediated by directly activate lin28a/let-7 axis. Video abstract
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Affiliation(s)
- Qian Li
- Department of Obstetrics and Gynaecology, Laboratory Block, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong, SAR, China.,Assisted Reproductive Center, Women & Children's Hospital of Northwest China, 73 Hou zai Road, Xi'an, China
| | - Juanzi Shi
- Assisted Reproductive Center, Women & Children's Hospital of Northwest China, 73 Hou zai Road, Xi'an, China
| | - Weimin Liu
- Department of Obstetrics and Gynaecology, Laboratory Block, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong, SAR, China.
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