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Maoga JB, Riaz MA, Mwaura AN, Mecha E, Omwandho COA, Scheiner-Bobis G, Meinhold-Heerlein I, Konrad L. Analysis of Membrane Type-1 Matrix Metalloproteinase (MT1-MMP, MMP14) in Eutopic and Ectopic Endometrium and in Serum and Endocervical Mucus of Endometriosis. Biomedicines 2023; 11:2730. [PMID: 37893104 PMCID: PMC10604514 DOI: 10.3390/biomedicines11102730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/26/2023] [Accepted: 10/04/2023] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND Membrane type-matrix metalloproteinases (MT-MMPs) are a subgroup of the matrix metalloproteinases (MMPs) family and are key molecules in the degradation of the extracellular matrix. Membrane type-1 matrix metalloproteinase (MT1-MMP, MMP14) is often deregulated in different cancer tissues and body fluids of human cancer patients; however, MT1-MMP levels in endometriosis and adenomyosis patients are currently unknown. MATERIALS AND METHODS Tissue samples from patients with and without endometriosis or adenomyosis were analyzed with immunohistochemistry for the localization of MT1-MMP. Serum and endocervical mucus samples from patients with and without endometriosis or adenomyosis were investigated with MT1-MMP ELISAs. RESULTS MT1-MMP was localized preferentially in the glands of eutopic and ectopic endometrium. MT1-MMP protein levels are significantly reduced in ovarian endometriosis (HSCORE = 31) versus eutopic endometrium (HSCORE = 91) and adenomyosis (HSCORE = 149), but significantly increased in adenomyosis (HSCORE = 149) compared to eutopic endometrium (HSCORE = 91). Similarly, analysis of the levels of MT1-MMP using enzyme-linked immune assays (ELISAs) demonstrated a significant increase in the concentrations of MT1-MMP in the serum of endometriosis patients (1.3 ± 0.8) versus controls (0.7 ± 0.2), but not in the endocervical mucus. Furthermore, MT1-MMP levels in the endocervical mucus of patients with endometriosis were notably reduced in patients using contraception (3.2 ± 0.4) versus those without contraception (3.8 ± 0.2). CONCLUSIONS Taken together, our findings showed an opposite regulation of MT1-MMP in the tissue of ovarian endometriosis and adenomyosis compared to eutopic endometrium without endometriosis but increased serum levels in patients with endometriosis.
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Affiliation(s)
- Jane B. Maoga
- Center of Gynecology and Obstetrics, Faculty of Medicine, Justus Liebig University Giessen, 35392 Giessen, Germany; (J.B.M.); (M.A.R.); (A.N.M.); (I.M.-H.)
| | - Muhammad A. Riaz
- Center of Gynecology and Obstetrics, Faculty of Medicine, Justus Liebig University Giessen, 35392 Giessen, Germany; (J.B.M.); (M.A.R.); (A.N.M.); (I.M.-H.)
| | - Agnes N. Mwaura
- Center of Gynecology and Obstetrics, Faculty of Medicine, Justus Liebig University Giessen, 35392 Giessen, Germany; (J.B.M.); (M.A.R.); (A.N.M.); (I.M.-H.)
| | - Ezekiel Mecha
- Department of Biochemistry, University of Nairobi, Nairobi P.O. Box 30197-00100, Kenya;
| | - Charles O. A. Omwandho
- Department of Health Sciences, Kirinyaga University, Kerugoya P.O. Box 143-10300, Kenya;
| | - Georgios Scheiner-Bobis
- Institute for Veterinary Physiology and Biochemistry, School of Veterinary Medicine, Justus Liebig University Giessen, 35392 Giessen, Germany;
| | - Ivo Meinhold-Heerlein
- Center of Gynecology and Obstetrics, Faculty of Medicine, Justus Liebig University Giessen, 35392 Giessen, Germany; (J.B.M.); (M.A.R.); (A.N.M.); (I.M.-H.)
| | - Lutz Konrad
- Center of Gynecology and Obstetrics, Faculty of Medicine, Justus Liebig University Giessen, 35392 Giessen, Germany; (J.B.M.); (M.A.R.); (A.N.M.); (I.M.-H.)
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Muñoz-Sáez E, Moracho N, Learte AIR, Collignon A, Arroyo AG, Noel A, Sounni NE, Sánchez-Camacho C. Molecular Mechanisms Driven by MT4-MMP in Cancer Progression. Int J Mol Sci 2023; 24:9944. [PMID: 37373092 DOI: 10.3390/ijms24129944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
MT4-MMP (or MMP-17) belongs to the membrane-type matrix metalloproteinases (MT-MMPs), a distinct subset of the MMP family that is anchored to the cell surface, in this case by a glycosylphosphatidylinositol (GPI) motif. Its expression in a variety of cancers is well documented. However, the molecular mechanisms by which MT4-MMP contributes to tumor development need further investigation. In this review, we aim to summarize the contribution of MT4-MMP in tumorigenesis, focusing on the molecular mechanisms triggered by the enzyme in tumor cell migration, invasiveness, and proliferation, in the tumor vasculature and microenvironment, as well as during metastasis. In particular, we highlight the putative substrates processed and signaling cascades activated by MT4-MMP that may underlie these malignancy processes and compare this with what is known about its role during embryonic development. Finally, MT4-MMP is a relevant biomarker of malignancy that can be used for monitoring cancer progression in patients as well as a potential target for future therapeutic drug development.
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Affiliation(s)
- Emma Muñoz-Sáez
- Department of Health Science, School of Biomedical Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670 Madrid, Spain
| | - Natalia Moracho
- Department of Medicine, School of Biomedical Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670 Madrid, Spain
| | - Ana I R Learte
- Department of Dentistry, School of Biomedical Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670 Madrid, Spain
| | - Alice Collignon
- Laboratory of Biology of Tumor and Developmental Biology, GIGA Cancer, Liège University, B-4000 Liège, Belgium
- Cancer Metabolism and Tumor Microenvironment Group, GIGA Cancer, Liège University, B-4000 Liège, Belgium
| | - Alicia G Arroyo
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CIB-CSIC), 28040 Madrid, Spain
| | - Agnés Noel
- Laboratory of Biology of Tumor and Developmental Biology, GIGA Cancer, Liège University, B-4000 Liège, Belgium
| | - Nor Eddine Sounni
- Laboratory of Biology of Tumor and Developmental Biology, GIGA Cancer, Liège University, B-4000 Liège, Belgium
- Cancer Metabolism and Tumor Microenvironment Group, GIGA Cancer, Liège University, B-4000 Liège, Belgium
| | - Cristina Sánchez-Camacho
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, 28040 Madrid, Spain
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Impaired Expression of Membrane Type-2 and Type-3 Matrix Metalloproteinases in Endometriosis but Not in Adenomyosis. Diagnostics (Basel) 2022; 12:diagnostics12040779. [PMID: 35453827 PMCID: PMC9025324 DOI: 10.3390/diagnostics12040779] [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: 02/22/2022] [Revised: 03/11/2022] [Accepted: 03/21/2022] [Indexed: 02/04/2023] Open
Abstract
Matrix metalloproteinases (MMPs) play an important role in menstruation and endometriosis; however, the membrane-type matrix metalloproteinases (MT-MMPs) are not well studied in endometriosis and adenomyosis. We analyzed MT2-MMP (MMP15) and MT3-MMP (MMP16) in eutopic endometrium with and without endometriosis and with and without adenomyosis and ectopic endometrium of deep infiltrating endometriosis (DIE), peritoneal endometriosis (PE), and ovarian endometriosis (Ov) by immunohistochemistry. Preferential expression of both proteins was observed in the glandular and luminal epithelial cells of the eutopic endometrium of patients with and without endometriosis with a ~2.5-fold stronger expression of MT3-MMP compared to MT2-MMP. We did not observe any differences during menstrual cycling and in eutopic endometrium of patients with and without endometriosis. Similarly, eutopic endometrium and adenomyotic tissue with and without endometriosis showed similar protein levels of MT2-MMP and MT3-MMP. In contrast, MT2-MMP and MT3-MMP protein was decreased in ectopic compared to eutopic endometrium and adenomyosis. The similar expression of MT2-MMP and MT3-MMP in eutopic endometrium in patients with and without endometriosis in contrast to the impaired expression in ectopic endometrium suggests that alterations occur after and not before endometrial implantation possibly by distinct interactions with the different environments. The differential protein expression of MT2/3-MMP in adenomyosis compared to endometriosis might suggest a different pathogenesis pathway for the two diseases.
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Moracho N, Learte AIR, Muñoz-Sáez E, Marchena MA, Cid MA, Arroyo AG, Sánchez-Camacho C. Emerging roles of MT-MMPs in embryonic development. Dev Dyn 2021; 251:240-275. [PMID: 34241926 DOI: 10.1002/dvdy.398] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 06/17/2021] [Accepted: 06/30/2021] [Indexed: 12/19/2022] Open
Abstract
Membrane-type matrix metalloproteinases (MT-MMPs) are cell membrane-tethered proteinases that belong to the family of the MMPs. Apart from their roles in degradation of the extracellular milieu, MT-MMPs are able to activate through proteolytic processing at the cell surface distinct molecules such as receptors, growth factors, cytokines, adhesion molecules, and other pericellular proteins. Although most of the information regarding these enzymes comes from cancer studies, our current knowledge about their contribution in distinct developmental processes occurring in the embryo is limited. In this review, we want to summarize the involvement of MT-MMPs in distinct processes during embryonic morphogenesis, including cell migration and proliferation, epithelial-mesenchymal transition, cell polarity and branching, axon growth and navigation, synapse formation, and angiogenesis. We also considered information about MT-MMP functions from studies assessed in pathological conditions and compared these data with those relevant for embryonic development.
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Affiliation(s)
- Natalia Moracho
- Department of Medicine, School of Biomedical Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, Madrid, Spain
| | - Ana I R Learte
- Department of Dentistry, School of Biomedical Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, Madrid, Spain
| | - Emma Muñoz-Sáez
- Department of Health Science, School of Biomedical Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, Madrid, Spain
| | - Miguel A Marchena
- Department of Medicine, School of Biomedical Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, Madrid, Spain
| | - María A Cid
- Department of Dentistry, School of Biomedical Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, Madrid, Spain
| | - Alicia G Arroyo
- Vascular Pathophysiology Department, Centro Nacional de Investigaciones Cardiovasculares (CNIC-CSIC), Madrid, Spain.,Molecular Biomedicine Department, Centro de Investigaciones Biológicas Margarita Salas (CIB-CSIC), Madrid, Spain
| | - Cristina Sánchez-Camacho
- Department of Medicine, School of Biomedical Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, Madrid, Spain.,Vascular Pathophysiology Department, Centro Nacional de Investigaciones Cardiovasculares (CNIC-CSIC), Madrid, Spain
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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: 18] [Impact Index Per Article: 6.0] [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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Zhang D, Yang Y, Liang C, Liu J, Wang H, Liu S, Yan Q. poFUT1 promotes uterine angiogenesis and vascular remodeling via enhancing the O-fucosylation on uPA. Cell Death Dis 2019; 10:775. [PMID: 31601791 PMCID: PMC6787057 DOI: 10.1038/s41419-019-2005-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/12/2019] [Accepted: 09/17/2019] [Indexed: 12/17/2022]
Abstract
Uterine angiogenesis and vascular remodeling play critical roles in determing the normal menstrual cycle and successful pregnancy. Poor uterine angiogenesis usually results in pregnancy failure. Protein O-fucosyltransferase 1 (poFUT1) is the key enzyme responsible for O-fucosylated glycan biosynthesis on glycoproteins. However, the dynamic expression and regulation of poFUT1 on the uterine angiogenesis and vascular remodeling remain unknown. Here, we showed that the enlargement of the vascular lumen in the secretory phase was greater than that in the proliferative phase of the uterine endometrium during menstrual cycle; whereas there was a narrower vessel lumen and fewer blood vessels in the decidua from miscarriage patients than in that from healthy pregnancy women. Additionally, the expression of poFUT1 was increased in the uterine endometrium during the secretory phase compared with that in the proliferation phase, and its expression was decreased in the uterus of miscarriage patients compared with that of the healthy pregnancy women. Using hESCs and a mouse model, we demonstrated that poFUT1 increased the O-fucosylation on uPA, and activated of the RhoA signaling pathway, thus facilitating uterine angiogenesis and vascular remodeling. We also provide evidence that poFUT1 promotes hESCs angiogenesis by the decreased stemness of hESCs. These findings reveal a new insight into the uterine angiogenesis and vascular remodeling. The study suggests that poFUT1 could be seen as a novel potential diagnostic and therapeutic target for miscarriage.
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Affiliation(s)
- Dandan Zhang
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, 116044, Dalian, China
| | - Yu Yang
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, 116044, Dalian, China
| | - Caixia Liang
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, 116044, Dalian, China
| | - Jianwei Liu
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, 116044, Dalian, China
| | - Hao Wang
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, 116044, Dalian, China
| | - Shuai Liu
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, 116044, Dalian, China.
| | - Qiu Yan
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, 116044, Dalian, China.
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Ding JL, Diao LH, Yin TL, Huang CY, Yin B, Chen C, Zhang Y, Li J, Cheng YX, Zeng Y, Yang J. Aberrant expressions of endometrial Id3 and CTLA-4 are associated with unexplained repeated implantation failure and recurrent miscarriage. Am J Reprod Immunol 2017; 78. [PMID: 28224680 DOI: 10.1111/aji.12632] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Accepted: 01/02/2017] [Indexed: 12/17/2022] Open
Abstract
Inhibitor of DNA-binding protein 3 (Id3) is required for tumor angiogenesis and regulatory T-cell generation. However, the involvement of Id3 in unexplained repeated implantation failure (RIF) and recurrent miscarriage (RM) remains poorly understood. Immunohistochemistry was used to identify Id3, CD34, CTLA-4, and FOXP3 in the endometrium taken from the women with RIF (n=16), RM (n=16) and matched controls (n=8). The images were acquired and analyzed by the Vectra® automated quantitative pathology imaging system. Percentage of Id3+ cells was significantly higher in the endometrium of women with RIF and RM compared with controls. The numbers of Id3+ and CD34+ vessels in the endometrium were positively correlated in control but not in RIF or RM. Percentages of CTLA-4+ cells, but not FOXP3+ cells, were significantly increased in the endometrium of RIF and RM women than those in controls. We found aberrant expressions of endometrial Id3 and CTLA-4 in peri-implantation endometrium of women with RIF and RM, suggesting the negative roles of these angiogenesis and immune tolerance markers involving in regulating endometrium receptivity.
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Affiliation(s)
- Jin-Li Ding
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - Liang-Hui Diao
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
| | - Tai-Lang Yin
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - Chun-Yu Huang
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
| | - Biao Yin
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
| | - Cong Chen
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
| | - Yi Zhang
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jie Li
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yan-Xiang Cheng
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yong Zeng
- Shenzhen Key Laboratory for Reproductive Immunology of Peri-implantation, Shenzhen Zhongshan Institute for Reproduction and Genetics, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China
| | - Jing Yang
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China
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Saraiva AL, Payan-Carreira R, Gärtner F, Santana I, Rêma A, Lourenço LM, Pires MA. Immunohistochemical Expression of Cyclooxygenase-2 (COX-2) in Feline Endometrial Adenocarcinoma and in Normal and Hyperplastic Endometria. Reprod Domest Anim 2015; 50:333-340. [DOI: 10.1111/rda.12497] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/13/2015] [Indexed: 11/30/2022]
Affiliation(s)
- AL Saraiva
- CECAV; Centro de Ciência Animal e Veterinária; Universidade de Trás-os-Montes e Alto Douro; Quinta de Prados; Vila Real Portugal
- Escola Universitária Vasco da Gama (EUVG); Coimbra Portugal
| | - R Payan-Carreira
- CECAV; Centro de Ciência Animal e Veterinária; Universidade de Trás-os-Montes e Alto Douro; Quinta de Prados; Vila Real Portugal
| | - F Gärtner
- Abel Salazar Institute of Biomedical Sciences (ICBAS); University of Porto; Porto Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP); Porto Portugal
| | - I Santana
- CECAV; Centro de Ciência Animal e Veterinária; Universidade de Trás-os-Montes e Alto Douro; Quinta de Prados; Vila Real Portugal
| | - A Rêma
- Abel Salazar Institute of Biomedical Sciences (ICBAS); University of Porto; Porto Portugal
| | - LM Lourenço
- CECAV; Centro de Ciência Animal e Veterinária; Universidade de Trás-os-Montes e Alto Douro; Quinta de Prados; Vila Real Portugal
| | - MA Pires
- CECAV; Centro de Ciência Animal e Veterinária; Universidade de Trás-os-Montes e Alto Douro; Quinta de Prados; Vila Real Portugal
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Zhu SK, Zhou Y, Cheng C, Zhong S, Wu HQ, Wang B, Fan P, Xiong JX, Yang HJ, Wu HS. Overexpression of membrane-type 2 matrix metalloproteinase induced by hypoxia-inducible factor-1α in pancreatic cancer: Implications for tumor progression and prognosis. Mol Clin Oncol 2014; 2:973-981. [PMID: 25279184 DOI: 10.3892/mco.2014.357] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 07/15/2014] [Indexed: 01/06/2023] Open
Abstract
Membrane-type 2 matrix metalloproteinase (MT2-MMP) has been identified as a powerful modulator of the pericellular environment that promotes tumor invasion and metastasis. In this study, we investigated the association of MT2-MMP and hypoxia-inducible factor-1α (HIF-1α) expression in pancreatic cancer with regard to their clinical prognostic significance. Of the tissue specimens obtained from the 78 patients included in this study, 46 (59%) were found to be positive for MT2-MMP immunostaining and MT2-MMP expression was colocalized with HIF-1α in pancreatic cancer. Using the Spearman's rank analysis, the protein and mRNA expression level of MT2-MMP was found to be significantly correlated with HIF-1α and CD34-microvascular density in pancreatic cancer. Furthermore, the expression of MT2-MMP in response to hypoxia was increased in a time-dependent manner and the promoter luciferase reporter revealed upregulation of MT2-MMP expression induced by HIF-1α in pancreatic cancer cells. Moreover, the Cox regression model indicated that MT2-MMP was an independent prognostic factor in patients with pancreatic cancer. Our results demonstrated that the overexpression of MT2-MMP was induced by HIF-1α in response to hypoxia and was an independent prognostic factor for pancreatic cancer progression.
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Affiliation(s)
- Shi-Kai Zhu
- Organ Transplant Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China ; School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, P.R. China
| | - Yu Zhou
- Institute of Laboratory Medicine, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China ; School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, P.R. China
| | - Chao Cheng
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Shan Zhong
- Organ Transplant Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China ; School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, P.R. China
| | - Han-Qing Wu
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Bo Wang
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Ping Fan
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Jiong-Xin Xiong
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Hong-Ji Yang
- Organ Transplant Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China ; School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, P.R. China
| | - He-Shui Wu
- Department of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
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Madar T, Shahaf G, Sheiner E, Brazg J, Levinson J, Yaniv Salem S, Twina G, Baron J, Mazor M, Holcberg G, Lewis EC. Low levels of circulating alpha-1 antitrypsin are associated with spontaneous abortions. J Matern Fetal Neonatal Med 2013; 26:1782-7. [DOI: 10.3109/14767058.2013.801955] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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11
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Host L, Paye A, Detry B, Blacher S, Munaut C, Foidart JM, Seiki M, Sounni NE, Noel A. The proteolytic activity of MT4-MMP is required for its pro-angiogenic and pro-metastatic promoting effects. Int J Cancer 2012; 131:1537-48. [PMID: 22262494 DOI: 10.1002/ijc.27436] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Accepted: 12/29/2011] [Indexed: 11/12/2022]
Abstract
Membrane-type 4 matrix metalloprotease (MT4-MMP) expression in breast adenocarcinoma stimulates tumor growth and metastatic spreading to the lung. However, whether these pro-tumorigenic and pro-metastatic effects of MT4-MMP are related to a proteolytic action is not yet known. Through site directed mutagenesis MT4-MMP has been inactivated in cancer cells through Glutamic acid 249 substitution by Alanine in the active site. Active MT4-MMP triggered an angiogenic switch at day 7 after tumor implantation and drastically accelerated subcutaneous tumor growth as well as lung colonization in recombination activating gene-1-deficient mice. All these effects were abrogated upon MT4-MMP inactivation. In sharp contrast to most MMPs being primarily of stromal origin, we provide evidence that tumor-derived MT4-MMP, but not host-derived MT4-MMP contributes to angiogenesis. A genetic approach using MT4-MMP-deficient mice revealed that the status of MT4-MMP produced by host cells did not affect the angiogenic response. Despite of this tumor intrinsic feature, to exert its tumor promoting effect, MT4-MMP requires a permissive microenvironment. Indeed, tumor-derived MT4-MMP failed to circumvent the lack of an host angio-promoting factor such as plasminogen activator inhibitor-1. Overall, our study demonstrates the key contribution of MT4-MMP catalytic activity in the tumor compartment, at the interface with host cells. It identifies MT4-MMP as a key intrinsic tumor cell determinant that contributes to the elaboration of a permissive microenvironment for metastatic dissemination.
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Affiliation(s)
- Lorin Host
- Laboratory of Tumor and Developmental Biology, Groupe Interdisciplinaire de Génoprotéomique Appliquée-Cancer, GIGA-Cancer, University of Liege, Liège, Belgium
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12
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Sohail A, Marco M, Zhao H, Shi Q, Merriman S, Mobashery S, Fridman R. Characterization of the dimerization interface of membrane type 4 (MT4)-matrix metalloproteinase. J Biol Chem 2011; 286:33178-89. [PMID: 21828052 DOI: 10.1074/jbc.m111.253369] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
MT4-MMP (MMP17) belongs to a unique subset of membrane type-matrix metalloproteinases that are anchored to the cell surface via a glycosylphosphatidylinositol moiety. However, little is known about its biochemical properties. Here, we report that MT4-MMP is displayed on the cell surface as a mixed population of monomeric, dimeric, and oligomeric forms. Sucrose gradient fractionation demonstrated that these forms of MT4-MMP are all present in lipid rafts. Mutational and computational analyses revealed that Cys(564), which is present within the stem region, mediates MT4-MMP homodimerization by forming a disulfide bond. Substitution of Cys(564) results in a more rapid MT4-MMP turnover, when compared with the wild-type enzyme, consistent with a role for dimerization in protein stability. Expression of MT4-MMP in Madin-Darby canine kidney cells enhanced cell migration and invasion of Matrigel, a process that requires catalytic activity. However, a serine substitution at Cys(564) did not reduce MT4-MMP-stimulated cell invasion of Matrigel suggesting that homodimerization is not required for this process. Deglycosylation studies showed that MT4-MMP is modified by N-glycosylation. Moreover, inhibition of N-glycosylation by tunicamycin diminished the extent of MT4-MMP dimerization suggesting that N-glycans may confer stability to the dimeric form. Taken together, the data presented here provide a new insight into the characteristics of MT4-MMP and highlight the common and distinct properties of the glycosylphosphatidylinositol-anchored membrane type-matrix metalloproteinases.
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Affiliation(s)
- Anjum Sohail
- Department of Pathology and the Karmanos Cancer Institute, Wayne State University, Detroit, Michigan 48201, USA
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13
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Ulbrich SE, Meyer SU, Zitta K, Hiendleder S, Sinowatz F, Bauersachs S, Büttner M, Fröhlich T, Arnold GJ, Reichenbach HD, Wolf E, Meyer HHD. Bovine endometrial metallopeptidases MMP14 and MMP2 and the metallopeptidase inhibitor TIMP2 participate in maternal preparation of pregnancy. Mol Cell Endocrinol 2011; 332:48-57. [PMID: 20887771 DOI: 10.1016/j.mce.2010.09.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Revised: 09/18/2010] [Accepted: 09/21/2010] [Indexed: 01/08/2023]
Abstract
Early embryonic development is critically dependent on both maternal preparation and embryonic signalling of pregnancy. Matrix metallopeptidases (MMP) contribute to spatial and temporal matrix remodeling in the bovine endometrium. In this study we observed distinct changes in expression of MMP2, MMP14, and the metallopeptidase inhibitor TIMP2 between different phases of the estrous cycle indicating an endocrine regulation. An increase of TIMP2 protein abundance was ascertained in the uterine lumen during the time of embryo elongation. The expression pattern and cellular localization correlate well with the assumed effects of MMPs on release and activation of cytokines and growth factors directing cell migration, differentiation, and vascularization during this pivotal period of development. Specifically, active MMP2 in the endometrium may determine the allocation of growth factors supporting conceptus development. The presence of a day 18 conceptus in vivo and day 8 blastoysts in vitro induced endometrial TIMP2 mRNA expression. The results imply that TIMP2 is involved in very early local maternal recognition of pregnancy. Matrix metallopeptidases are likely to participate in remodeling processes preparing a receptive endometrium for a timely and precise regulation of embryo development.
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Affiliation(s)
- Susanne E Ulbrich
- Physiology Weihenstephan, Technical University Munich, Weihenstephaner Berg 3, 85354 Freising, Germany.
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14
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Plaisier M. Decidualisation and angiogenesis. Best Pract Res Clin Obstet Gynaecol 2010; 25:259-71. [PMID: 21144801 DOI: 10.1016/j.bpobgyn.2010.10.011] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2010] [Revised: 09/20/2010] [Accepted: 10/14/2010] [Indexed: 10/18/2022]
Abstract
The timing of decidualisation and vascular processes during the implantation period is of paramount importance for the development of a receptive endometrium suitable for implantation. The endometrium transforms during the secretory phase into a well-vascularised receptive tissue characterised by increased vascular permeability, oedema, proliferation and differentiation of stromal cells into decidual cells, invasion of leucocytes, vascular remodelling and angiogenesis. Decidualisation continues in the presence of conception and an influx of immune cells, trophoblasts and vascular adaptation will occur. Vascular changes include spiral artery remodelling, angiogenesis and the induction of angiogenic factors. Disturbances in uterine blood supply are associated with first-trimester miscarriages and third-trimester perinatal morbidity and mortality caused by pre-eclampsia and foetal growth restriction. This article assesses decidual vascular changes during human implantation, and evaluates the involvement of angiogenesis in the pathogenesis of miscarriages, pre-eclampsia and intrauterine growth restriction.
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Affiliation(s)
- Margreet Plaisier
- Leiden University Medical Centre, PO Box 9600, 2300 RC Leiden, The Netherlands.
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Chabottaux V, Ricaud S, Host L, Blacher S, Paye A, Thiry M, Garofalakis A, Pestourie C, Gombert K, Bruyere F, Lewandowsky D, Tavitian B, Foidart JM, Duconge F, Noel A. Membrane-type 4 matrix metalloproteinase (MT4-MMP) induces lung metastasis by alteration of primary breast tumour vascular architecture. J Cell Mol Med 2009; 13:4002-13. [PMID: 19426156 PMCID: PMC4516547 DOI: 10.1111/j.1582-4934.2009.00764.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
The present study aims at investigating the mechanism by which membrane-type 4 matrix metalloproteinase (MT4-MMP), a membrane-anchored MMP expressed by human breast tumour cells promotes the metastatic dissemination into lung. We applied experimental (intravenous) and spontaneous (subcutaneous) models of lung metastasis using human breast adenocarcinoma MDA-MB-231 cells overexpressing or not MT4-MMP. We found that MT4-MMP does not affect lymph node colonization nor extravasation of cells from the bloodstream, but increases the intravasation step leading to metastasis. Ultrastructural and fluorescent microscopic observations coupled with automatic computer-assisted quantifications revealed that MT4-MMP expression induces blood vessel enlargement and promotes the detachment of mural cells from the vascular tree, thus causing an increased tumour vascular leak. On this basis, we propose that MT4-MMP promotes lung metastasis by disturbing the tumour vessel integrity and thereby facilitating tumour cell intravasation.
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Affiliation(s)
- Vincent Chabottaux
- Laboratory of Tumor and Developmental Biology, Groupe Interdisciplinaire de Génoprotéomique Appliquée-Cancer, University of Liege, Tour de Pathologie, Liège, Belgium
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16
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Dunk C, Smith S, Hazan A, Whittle W, Jones RL. Promotion of angiogenesis by human endometrial lymphocytes. Immunol Invest 2008; 37:583-610. [PMID: 18716939 DOI: 10.1080/08820130802191466] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The human endometrium is a unique tissue that undergoes dramatic monthly remodeling during the menstrual cycle in preparation for an implanting conceptus. This remodeling involves sequential proliferation and differentiation of endometrial stromal and epithelial cells, coupled with extensive angiogenesis and infiltration of a specific specialized immune cell subset. Increasing evidence points to an essential role for these maternal leukocytes in stimulating the endometrial angiogenesis, and we propose that they also play a key role in the decidual vascular transformation. Aberrant endometrial angiogenesis, decidualisation and vascular transformation is thought to underlie many pathologies of pregnancy, from infertility to the development of preeclampsia and Intra Uterine Growth Restriction. In this chapter we review the cellular processes associated with each stage of endometrial and decidual transformation, detailing the role of the immune cell populations and the angiogenic and chemotactic factors secreted by them.
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Affiliation(s)
- Caroline Dunk
- Departments of Physiology and Obstetrics and Gynecology, Women's and Infants Health, Samuel Lunenfeld Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.
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17
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Plaisier M, Dennert I, Rost E, Koolwijk P, van Hinsbergh V, Helmerhorst F. Decidual vascularization and the expression of angiogenic growth factors and proteases in first trimester spontaneous abortions. Hum Reprod 2008; 24:185-97. [DOI: 10.1093/humrep/den296] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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18
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Cobellis L, Caprio F, Trabucco E, Mastrogiacomo A, Coppola G, Manente L, Colacurci N, De Falco M, De Luca A. The pattern of expression of Notch protein members in normal and pathological endometrium. J Anat 2008; 213:464-72. [PMID: 18691378 DOI: 10.1111/j.1469-7580.2008.00963.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The objective of this study was to investigate the pattern of expression and the localization of Notch-1, Notch-4 and Jagged-1 in physiological and pathological human endometrium and to evaluate the expression levels of two major regulators of the G1 checkpoint, namely cyclin D1 and p21. Sixty samples of physiological endometrium and 60 samples of pathological endometrium were used for the study. Evaluation of the expression level and the distribution of Notch pathway members and cell-cycle proteins was performed by immunohistochemistry. In the physiological endometrium we observed an increase of Notch-1 and Jagged-1 from proliferative to secretory phase and an opposite trend for Notch-4. In menopause, the level of expression of all three members of the Notch pathway decreased. We also observed a cyclin D1 increase from proliferative to secretory phase. By contrast, p21 showed a slight increase from proliferative to secretory phase. In the pathological endometrium, we observed an increase of Notch-1 expression from polyps to carcinoma and decrease for Notch-4 and Jagged-1. Moreover, we observed a higher expression of cyclin D1 in all the endometrial pathologies. By contrast, the expression level of p21 slightly increased from polyps to carcinoma. We concluded that in human endometrium Notch-4 seems to be more involved in controlling proliferation, whereas Notch-1 seems to be more involved in differentiation programming. Deregulation of these functions may induce the onset of several endometrial pathologies from polyps to cancer.
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Affiliation(s)
- Luigi Cobellis
- Department of Gynaecology, Obstetric and Reproductive Science, Second University of Studies of Naples, Naples, Italy
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Plaisier M, Koolwijk P, Willems F, Helmerhorst FM, van Hinsbergh VW. Pericellular-acting proteases in human first trimester decidua. Mol Hum Reprod 2008; 14:41-51. [DOI: 10.1093/molehr/gam085] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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20
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Gaetje R, Holtrich U, Engels K, Kourtis K, Cikrit E, Kissler S, Rody A, Karn T, Kaufmann M. Expression of membrane-type 5 matrix metalloproteinase in human endometrium and endometriosis. Gynecol Endocrinol 2007; 23:567-73. [PMID: 17952761 DOI: 10.1080/09513590701556921] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
BACKGROUND The metalloproteinases (MMPs) are a family of proteolytic enzymes involved in tissue remodeling and cell migration. Endometrial tissue remodeling proceeds during the menstrual cycle and requires a temporary and spatially balanced expression of several different MMPs. Various members of the MMPs also seem to play an important role in the invasion process of endometriosis; however, so far only a limited number of studies have focused on membrane-associated MMPs. METHODS The present study investigated the expression of membrane-type 5 metalloproteinase (MT5-MMP) in the human endometrium and endometriotic lesions by microarray hybridization, real-time polymerase chain reaction (PCR) and immunofluorescence. RESULTS Both the gene chip expression analyses as well as PCR indicated expression of MT5-MMP in normal human endometrium and strongly elevated transcript levels in most peritoneal endometriosis lesions analyzed. Moreover we detected enhanced MT5-MMP expression in the eutopic endometrium from patients suffering from endometriosis, further supporting a role of MT5-MMP in the formation of endometriosis. Immunohistochemical analysis was used to determine the intracellular localization and tissue distribution of MT5-MMP. While the MT5-MMP antigen expression could be clearly attributed to the membrane of epithelial cells, a highly complex differential immunohistochemical staining of MT5-MMP in the various compartments of endometrial tissue was observed. The strongest staining was seen in luminal epithelial cells, whereas endometrial glands frequently showed partial expression of MT5-MMP. CONCLUSION Our microarray analysis and real-time PCR of MT5-MMP transcripts may point to an elevated tissue remodeling and cell migration in endometrium from endometriosis patients as implied by the function of related MMPs.
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Affiliation(s)
- Regine Gaetje
- Department of Obstetrics and Gynecology, Johann Wolfgang Goethe-University, Frankfurt, Germany.
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Plaisier M, Rodrigues S, Willems F, Koolwijk P, van Hinsbergh VWM, Helmerhorst FM. Different degrees of vascularization and their relationship to the expression of vascular endothelial growth factor, placental growth factor, angiopoietins, and their receptors in first-trimester decidual tissues. Fertil Steril 2007; 88:176-87. [PMID: 17383647 DOI: 10.1016/j.fertnstert.2006.11.102] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2006] [Revised: 11/15/2006] [Accepted: 11/17/2006] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To evaluate vascular adaptation to implantation by studying vascularization and angiogenic factors in the decidua basalis (DB), decidua parietalis, and decidual secretory endometrium of first-trimester pregnancies. Comparison of these tissues provides information about the regulation of vascularization by pregnancy-induced hormones and/or the extravillous trophoblast (EVT). DESIGN Prospective study. SETTING Leids University Medical Center (LUMC). PATIENT(S) Women (n = 32) undergoing voluntarily first-trimester termination of pregnancy. INTERVENTION(S) Decidual samples from vacuum-aspiration. MAIN OUTCOME MEASURE(S) Evaluation of vascularization, determined by CD34 immunohistochemistry, and vascular endothelial growth factor-A, placental growth factor (PlGF), vascular endothelial growth factor receptor 1 (Flt-1), vascular endothelial growth factor receptor 2, angiopoietin-1 (Ang-1), angiopoietin-2 (Ang-2), and TIE-2 protein and messenger RNA (mRNA) expression, determined by reverse transcriptase-polymerase chain reaction and immunohistochemistry, in serial paraffin sections. RESULT(S) Pregnancy-induced hormones and EVT influence vascularization by enhancing the vascular and luminal surface, and by reducing vessel density at the implantation site. These changes correlate with differences in gene and protein expression. Placental growth factor mRNA and PlGF and Flt-1 protein expressions were elevated in DB under the influence of EVT. In addition, the angiopoietins were differentially expressed, in favor of Ang-2, in DB. CONCLUSION(S) The EVT and pregnancy-induced hormones might be associated with the regulation of vascularization and the expression of angiogenic factors in decidua. The induction of PlGF and Flt-1, and the Ang-2:Ang-1 ratio in DB, suggest that these factors play a role in regulating angiogenesis at the implantation site.
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Affiliation(s)
- Margreet Plaisier
- Department of Biomedical Research, TNO-Quality of Life, Leiden, The Netherlands
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Atkinson JM, Pennington CJ, Martin SW, Anikin VA, Mearns AJ, Loadman PM, Edwards DR, Gill JH. Membrane type matrix metalloproteinases (MMPs) show differential expression in non-small cell lung cancer (NSCLC) compared to normal lung: correlation of MMP-14 mRNA expression and proteolytic activity. Eur J Cancer 2007; 43:1764-71. [PMID: 17600697 DOI: 10.1016/j.ejca.2007.05.009] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2006] [Revised: 05/10/2007] [Accepted: 05/14/2007] [Indexed: 11/24/2022]
Abstract
Improved understanding of the involvement of matrix metalloproteinases (MMPs), including membrane-type MMPs (MT-MMPs), in human tumours has potential diagnostic, prognostic and therapeutic implications. We assessed the relationship between MT-MMP expression and clinicopathological parameters in human non-small cell lung cancer (NSCLC) and histologically normal lung tissue by quantitative Real Time PCR (qRT-PCR). All MT-MMPs (MMPs 14-17, 24 and 25) were detected by qRT-PCR with significantly higher MMP-14, -15 and -17 expression observed in tumour relative to normal lung specimens. MMP-16 was undetectable in normal lung but expressed in 8% tumours. MMP-15 demonstrated significant overexpression in adenocarcinomas relative to squamous cell carcinomas and normal lung tissue. MMP-14 mRNA expression strongly correlated to MMP-14 proteolytic activity in preclinical tumour models, indicating that qRT-PCR may predict MMP-14 activity levels in NSCLC. These data suggest that MMP-14, -15 and -17 may be good markers of disease, or therapeutic targets for treatment of human NSCLC.
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Affiliation(s)
- J M Atkinson
- Institute of Cancer Therapeutics, University of Bradford, Tumbling Hill Street, Bradford, West Yorkshire, BD7 1DP, UK
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