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Tang HY, Lin M, Liang YQ, Wang JH, Yi HG, Yang M. Tspan5 promotes the EMT process to regulate the syncytialization of trophoblast cells by activating Notch signalling. ZYGOTE 2023; 31:498-506. [PMID: 37485669 DOI: 10.1017/s0967199423000369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Placental trophoblastic cells play important roles in placental development and fetal health. However, the mechanism of trophoblastic cell fusion is still not entirely clear. The level of Tspan5 in the embryo culture medium was detected using enzyme-linked immunosorbent assay (ELISA). Fusion of BeWo cells was observed by immunofluorescence. Cell fusion-related factors and EMT-related factors were identified by qRT-PCR and western blotting. Notch protein repressor DAPT was used to verify the role of Tspan5 in BeWo cells. The expression of Tspan5 was significantly increased in embryo culture medium. The fusion of BeWo cells was observed after treatment with forskolin (FSK). Cell fusion-related factors (i.e. β-hCG and syncytin 1/2) and Tspan5 were significantly increased after FSK treatment. In addition, FSK treatment promoted EMT-related protein expression in BeWo cells. Knockdown of Tspan5 inhibited cell fusion and EMT-related protein levels. Notch-1 and Jagged-1 protein levels were significantly upregulated, and the EMT process was activated by overexpression of Tspan5 in FSK-treated BeWo cells. Interestingly, blocking the Notch pathway by the repressor DAPT had the opposite results. These results indicated that Tspan5 could promote the EMT process by activating the Notch pathway, thereby causing cell fusion. These findings contribute to a better understanding of trophoblast cell syncytialization and embryonic development. Tspan5 may be used as a therapeutic target for normal placental development.
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Affiliation(s)
- Hai-Yu Tang
- Department of Reproductive Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou514000, Guangdong Province, China
| | - Mei Lin
- Department of Reproductive Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou514000, Guangdong Province, China
| | - Yong-Qian Liang
- Department of Reproductive Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou514000, Guangdong Province, China
| | - Jin-Hua Wang
- Department of Reproductive Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou514000, Guangdong Province, China
| | - Hong-Gan Yi
- Department of Reproductive Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou514000, Guangdong Province, China
| | - Man Yang
- Department of Reproductive Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou514000, Guangdong Province, China
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Pant S, Bhati T, Dimri A, Arora R, Siraj F, Raisuddin S, Rastogi S. Chlamydia trachomatis infection regulates the expression of tetraspanins, activin-A, and inhibin-A in tubal ectopic pregnancy. Pathog Dis 2023; 81:ftad018. [PMID: 37480234 DOI: 10.1093/femspd/ftad018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 05/17/2023] [Accepted: 07/20/2023] [Indexed: 07/23/2023] Open
Abstract
Mechanism of Chlamydia trachomatis causing tubal ectopic pregnancy (EP) is not well understood. Tetraspanins (tspans), activin-A, and inhibin-A might play a role in the development of pathological conditions leading to EP. The study aimed to elucidate the expression of tspans, activin-A, and inhibin-A with a role of associated cytokines in C. trachomatis-associated EP and analyze interacting partners of DEGs, with an expression of a few important interacting genes. Fallopian tissue and serum were collected from 100 EP (Group I) and 100 controls (Group II) from SJH, New Delhi, India. Detection of C. trachomatis was done by polymerase chain reaction (PCR) and IgG antibodies were detected by enzyme-linked immunosorbent assay. Expression of tspans, activin-A, inhibin-A, and cytokines was analyzed by real time (RT)-PCR and their interacting genes were assessed by STRING. Expression of few disease-associated interacting genes was studied by RT-PCR. A total of 29% (Group I) were C. trachomatis positive. Tspans and activin-A were significantly upregulated, while inhibin-A was significantly downregulated in Group Ia. ITGA1, TLR-2, ITGB2, and Smad-3 were a few interacting genes. Expression of ITGA1, TLR-2, and Smad-3 was significantly upregulated in C. trachomatis-positive EP. Results suggested dysregulated tspans, activin-A, and inhibin-A might play a role in C. trachomatis-infected tubal EP.
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Affiliation(s)
- Shipra Pant
- Molecular Microbiology Laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung Hospital Campus, Post Box 4909, New Delhi 110029, India
| | - Tanu Bhati
- Molecular Microbiology Laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung Hospital Campus, Post Box 4909, New Delhi 110029, India
| | - Astha Dimri
- Molecular Microbiology Laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung Hospital Campus, Post Box 4909, New Delhi 110029, India
| | - Renu Arora
- Department of Obstetrics and Gynaecology, Vardhman Mahavir Medical College (VMMC) and Safdarjung Hospital, New Delhi 110029, India
| | - Fouzia Siraj
- Pathology Laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung Hospital Campus, Post Box 4909, New Delhi 110029, India
| | - Sheikh Raisuddin
- Department of Medical Elementology and Toxicology, Jamia Hamdard, Hamdard Nagar, New Delhi 10062, India
| | - Sangita Rastogi
- Molecular Microbiology Laboratory, ICMR-National Institute of Pathology, Sriramachari Bhawan, Safdarjung Hospital Campus, Post Box 4909, New Delhi 110029, India
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Colbert JD, Cruz FM, Baer CE, Rock KL. Tetraspanin-5-mediated MHC class I clustering is required for optimal CD8 T cell activation. Proc Natl Acad Sci U S A 2022; 119:e2122188119. [PMID: 36215490 DOI: 10.1073/pnas.2122188119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
MHC molecules are not randomly distributed on the plasma membrane but instead are present in discrete nanoclusters. The mechanisms that control formation of MHC I nanoclusters and the importance of such structures are incompletely understood. Here, we report a molecular association between tetraspanin-5 (Tspan5) and MHC I molecules that started in the endoplasmic reticulum and was maintained on the plasma membrane. This association was observed both in mouse dendritic cells and in human cancer cell lines. Loss of Tspan5 reduced the size of MHC I clusters without affecting MHC I peptide loading, delivery of complexes to the plasma membrane, or overall surface MHC I levels. Functionally, CD8 T cell responses to antigen presented by Tspan5-deficient dendritic cells were impaired but were restored by antibody-induced reclustering of MHC I molecules. In contrast, Tspan5 did not associate with two other plasma membrane proteins, Flotillin1 and CD55, with or the endoplasmic reticulum proteins Tapasin and TAP. Thus, our findings identify a mechanism underlying the clustering of MHC I molecules that is important for optimal T cell responses.
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Xie Q, Guo H, He P, Deng H, Gao Y, Dong N, Niu W, Liu T, Li M, Wang S, Wu Y, Li J. Tspan5 promotes epithelial-mesenchymal transition and tumour metastasis of hepatocellular carcinoma by activating Notch signalling. Mol Oncol 2021; 15:3184-3202. [PMID: 33955149 PMCID: PMC8564648 DOI: 10.1002/1878-0261.12980] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 01/08/2021] [Accepted: 05/03/2021] [Indexed: 12/13/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most lethal cancers worldwide due to a high rate of tumour metastasis and disease recurrence. In physiological conditions, tetraspanins interact with specific partner proteins in tetraspanin-enriched microdomains and regulate their subcellular localization and function. However, the function of Tspan5 in pathological processes, particularly in cancer biology and its clinical significance, are still unclear. Here, we describe that a high expression of Tspan5 is significantly associated with some clinicopathological features including invasive length, vascular invasion, clinical stage and poor overall survival of HCC patients. Alterations of Tspan5 expression by lentivirus transductions in HCC cells demonstrated that Tspan5 promotes wound healing and cell migration in vitro and tumour metastasis of HCC cells in vivo. Mechanistic studies revealed that Tspan5 promoted cell migration and tumour metastasis by increasing the enzymatic maturation of ADAM10 and activating Notch signalling via the increase of the cleavage of the Notch1 receptor catalysed by the γ-secretase complex. Activation of Notch signalling by Tspan5 was shown further to enhance the epithelial-mesenchymal transition (EMT) and actin skeleton rearrangement of tumour cells. In clinical HCC samples, Tspan5 expression is strongly correlated with many key molecules acting in Notch signalling and EMT, highlighting the role of Tspan5 in the regulation of Notch signalling, EMT and tumour metastasis of HCC. Our findings provide new insights into the mechanism of tumour metastasis and disease progression of HCC and may facilitate the development of novel clinical intervention strategies against HCC.
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Affiliation(s)
- Qian Xie
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
| | - Huiling Guo
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
| | - Peirong He
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
| | - Huan Deng
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
| | - Yanjun Gao
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
| | - Ningning Dong
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
| | - Wenbo Niu
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
| | - Tiancai Liu
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
| | - Ming Li
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
| | - Suihai Wang
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
| | - Yingsong Wu
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
| | - Ji‐Liang Li
- Key Laboratory of Antibody Engineering of Guangdong Higher Education InstitutesSchool of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhouChina
- Wenzhou Medical University Eye Hospital and School of Biomedical EngineeringChina
- Cancer Research CentreUniversity of Chinese Academy of Sciences Wenzhou InstituteChina
- Institute of Translational and Stratified MedicineUniversity of Plymouth Faculty of Medicine and DentistryUK
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Gao T, Liang Y, Tang H, Quan L. The increased level of Tspan5 in villi suggests more proliferation and invasiveness of trophoblasts in tubal pregnancy. Eur J Obstet Gynecol Reprod Biol 2018; 228:38-42. [PMID: 29908376 DOI: 10.1016/j.ejogrb.2018.05.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 05/18/2018] [Accepted: 05/23/2018] [Indexed: 11/19/2022]
Abstract
OBJECTIVE This study was to determinate the expression of Tspan5 in tubal ectopic implantation sites and to explore the correlation of the expressive level of Tspan5 at maternal-fetal interface and the occurrence of tubal ectopic pregnancy. STUDY DESIGN This is a retrospective study. Trophoblastic and endometrial tissues were collected from tubal ectopic pregnancy(Total of 40), and intrauterine pregnancy(Total of 41), who had voluntary abortion, non-pregnancy women(Total of 12), who recieved an diagnostic uterine curettage before IVF-ET for male infertility. All samples were collected from women aged 23-40 years, from February 2012 to January 2014. Results 1. In human villi Tspan5 was primarily located in cytoplasm and on the surfaces of cytotroblasts(CTs) and extravillous trophoblast(EVCTs). The intensity of Tspan5 in tubal pregnancy was significantly higher than that in normal intrauterine pregnancy, showing significant differences (Mean of IOD:109.39 ± 61.84 Vs. 89.04 ± 36.44;t = 2.33, P = 0.023). 2. In human deciduas of intrauterine pregnancy or endometrium of tubal pregnancy and non-pregnancy Tspan5 expressed in cytoplasm and membrane of glandular epithelial cells. The expressive level of this protein was increased in tubal pregnancy than that in intrauterine pregnancy and non-pregnancy(Mean of IOD:144.18 ± 106.22 Vs. 93.43 ± 67.10, P = 0.037; 144.18 ± 106.22 Vs. 88.56 ± 33.24, P = 0.018). CONCLUSION Our study indicated that the trophoblasts in tubal pregnancy showed more proliferative and invasive characteristics. Dysregulation of Tspan5 in decidual microenvironment may relate to the retention of embryo in fallopian tube. SUPPORT This study was Supported by Science and Technology Planning Project of Guangdong Province.
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Affiliation(s)
- Tianyang Gao
- Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, PR China.
| | - Yingqiu Liang
- The Fourth Hospital of Shijiazhuang, Shijiazhuang, HeBei, PR China
| | - Haiyu Tang
- Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, PR China
| | - Li Quan
- Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, PR China
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Saint-Pol J, Billard M, Dornier E, Eschenbrenner E, Danglot L, Boucheix C, Charrin S, Rubinstein E. New insights into the tetraspanin Tspan5 using novel monoclonal antibodies. J Biol Chem 2017; 292:9551-9566. [PMID: 28428248 DOI: 10.1074/jbc.m116.765669] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 03/29/2017] [Indexed: 01/02/2023] Open
Abstract
Tspan5 is a member of a subgroup of tetraspanins referred to as TspanC8. These tetraspanins directly interact with the metalloprotease ADAM10, regulate its exit from the endoplasmic reticulum and subsequent trafficking, and differentially regulate its ability to cleave various substrates and activate Notch signaling. The study of Tspan5 has been limited by the lack of good antibodies. This study provides new insights into Tspan5 using new monoclonal antibodies (mAbs), including two mAbs recognizing both Tspan5 and the highly similar tetraspanin Tspan17. Using these mAbs, we show that endogenous Tspan5 associates with ADAM10 in human cell lines and in mouse tissues where it is the most abundant, such as the brain, the lung, the kidney, or the intestine. We also uncover two TspanC8-specific motifs in the large extracellular domain of Tspan5 that are important for ADAM10 interaction and exit from the endoplasmic reticulum. One of the anti-Tspan5 mAbs does not recognize Tspan5 associated with ADAM10, providing a convenient way to measure the fraction of Tspan5 not associated with ADAM10. This fraction is minor in the cell lines tested, and it increases upon transfection of cells with TspanC8 tetraspanins such as Tspan15 or Tspan33 that inhibit Notch signaling. Finally, two antibodies inhibit ligand-induced Notch signaling, and this effect is stronger in cells depleted of the TspanC8 tetraspanin Tspan14, further indicating that Tspan5 and Tspan14 can compensate for each other in Notch signaling.
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Affiliation(s)
- Julien Saint-Pol
- From Inserm, U935, F-94807 Villejuif.,the Université Paris-Sud, Institut André Lwoff, F-94807 Villejuif
| | - Martine Billard
- From Inserm, U935, F-94807 Villejuif.,the Université Paris-Sud, Institut André Lwoff, F-94807 Villejuif
| | - Emmanuel Dornier
- the Université Paris-Sud, Institut André Lwoff, F-94807 Villejuif.,Inserm, U1004, F-94807 Villejuif
| | - Etienne Eschenbrenner
- From Inserm, U935, F-94807 Villejuif.,the Université Paris-Sud, Institut André Lwoff, F-94807 Villejuif
| | - Lydia Danglot
- the CNRS, UMR7592, Université Paris Diderot, Sorbonne Paris Cité, Institut Jacques Monod, F-75205 Paris, and.,Inserm, ERL U950, 75205 Paris, France
| | - Claude Boucheix
- From Inserm, U935, F-94807 Villejuif.,the Université Paris-Sud, Institut André Lwoff, F-94807 Villejuif
| | - Stéphanie Charrin
- From Inserm, U935, F-94807 Villejuif.,the Université Paris-Sud, Institut André Lwoff, F-94807 Villejuif
| | - Eric Rubinstein
- From Inserm, U935, F-94807 Villejuif, .,the Université Paris-Sud, Institut André Lwoff, F-94807 Villejuif
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