1
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Limbu S, McCloskey KE. An endothelial cell is not simply an endothelial cell. Stem Cells Dev 2024. [PMID: 39030822 DOI: 10.1089/scd.2024.0088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2024] Open
Abstract
Endothelial cells (ECs) are a multifaceted component of the vascular system with roles in immunity, maintaining tissue-fluid balance, and vascular tone. Dysregulation or dysfunction of ECs can have far-reaching implications, leading pathologies ranging from cardiovascular diseases, like hypertension and atherosclerosis, ischemia, chronic kidney disease, blood-brain barrier integrity, dementia, and tumor metastasis. Recent advancements in regenerative medicine have highlighted the potential of stem cell-derived ECs, particularly from induced-pluripotent stem cells (iPSCs), to treat ischemic tissues, as well as models of vascular integrity. This review will summarize what is known in the generation of ECs with an emphasis on tissue-specific ECs and EC subphenotypes important in development of targeted cell-based therapies for patient treatment.
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Affiliation(s)
- Shiwani Limbu
- University of California Merced, Graduate Program in Quantitative and Systems Biology, Merced, California, United States;
| | - Kara E McCloskey
- University of California Merced, School of Engineering, 5200 N Lake Rd, Merced, Merced, California, United States, 95343-5001;
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2
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Gerrits T, Dijkstra KL, Bruijn JA, Scharpfenecker M, Bijkerk R, Baelde HJ. Antisense oligonucleotide-mediated terminal intron retention of endoglin: A potential strategy to inhibit renal interstitial fibrosis. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167186. [PMID: 38642778 DOI: 10.1016/j.bbadis.2024.167186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 04/15/2024] [Accepted: 04/17/2024] [Indexed: 04/22/2024]
Abstract
TGF-β is considered an important cytokine in the development of interstitial fibrosis in chronic kidney disease. The TGF-β co-receptor endoglin (ENG) tends to be upregulated in kidney fibrosis. ENG has two membrane bound isoforms generated via alternative splicing. Long-ENG was shown to enhance the extent of renal fibrosis in an unilateral ureteral obstruction mouse model, while short-ENG inhibited renal fibrosis. Here we aimed to achieve terminal intron retention of endoglin using antisense-oligo nucleotides (ASOs), thereby shifting the ratio towards short-ENG to inhibit the TGF-β1-mediated pro-fibrotic response. We isolated mRNA from kidney biopsies of patients with chronic allograft disease (CAD) (n = 12) and measured total ENG and short-ENG mRNA levels. ENG mRNA was upregulated 2.3 fold (p < 0.05) in kidneys of CAD patients compared to controls, while the percentage short-ENG of the total ENG mRNA was significantly lower (1.8 fold; p < 0.05). Transfection of ASOs that target splicing regulatory sites of ENG into TK173 fibroblasts led to higher levels of short-ENG (2 fold; p < 0.05). In addition, we stimulated these cells with TGF-β1 and measured a decrease in upregulation of ACTA2, COL1A1 and FN1 mRNA levels, and protein expression of αSMA, collagen type I, and fibronectin. These results show a potential for ENG ASOs as a therapy to reduce interstitial fibrosis in CKD.
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Affiliation(s)
- Tessa Gerrits
- Department of Pathology, Leiden University Medical Centre, 2333 ZA Leiden, Netherlands.
| | - Kyra L Dijkstra
- Department of Pathology, Leiden University Medical Centre, 2333 ZA Leiden, Netherlands
| | - Jan Anthonie Bruijn
- Department of Pathology, Leiden University Medical Centre, 2333 ZA Leiden, Netherlands
| | - Marion Scharpfenecker
- Department of Pathology, Leiden University Medical Centre, 2333 ZA Leiden, Netherlands
| | - Roel Bijkerk
- Department of Nephrology, Leiden University Medical Centre, 2333 ZA Leiden, Netherlands
| | - Hans J Baelde
- Department of Pathology, Leiden University Medical Centre, 2333 ZA Leiden, Netherlands
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3
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Mehner LM, Munoz-Sagredo L, Sonnentag SJ, Treffert SM, Orian-Rousseau V. Targeting CD44 and other pleiotropic co-receptors as a means for broad inhibition of tumor growth and metastasis. Clin Exp Metastasis 2024:10.1007/s10585-024-10292-4. [PMID: 38761292 DOI: 10.1007/s10585-024-10292-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 05/02/2024] [Indexed: 05/20/2024]
Abstract
Although progress has been made in the treatment of cancer, particularly for the four major types of cancers affecting the lungs, colon, breast and prostate, resistance to cancer treatment often emerges upon inhibition of major signaling pathways, which leads to the activation of additional pathways as a last-resort survival mechanism by the cancer cells. This signaling plasticity provides cancer cells with a level of operational freedom, reducing treatment efficacy. Plasticity is a characteristic of cancer cells that are not only able to switch signaling pathways but also from one cellular state (differentiated cells to stem cells or vice versa) to another. It seems implausible that the inhibition of one or a few signaling pathways of heterogeneous and plastic tumors can sustain a durable effect. We propose that inhibiting molecules with pleiotropic functions such as cell surface co-receptors can be a key to preventing therapy escape instead of targeting bona fide receptors. Therefore, we ask the question whether co-receptors often considered as "accessory molecules" are an overlooked key to control cancer cell behavior.
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Affiliation(s)
- Lisa-Marie Mehner
- Institute of Biological and Chemical Systems - Functional Molecular Systems, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Leonel Munoz-Sagredo
- Institute of Biological and Chemical Systems - Functional Molecular Systems, Karlsruhe Institute of Technology, Karlsruhe, Germany
- School of Medicine, Universidad de Valparaiso, Valparaiso, Chile
| | - Steffen Joachim Sonnentag
- Institute of Biological and Chemical Systems - Functional Molecular Systems, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Sven Máté Treffert
- Institute of Biological and Chemical Systems - Functional Molecular Systems, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Véronique Orian-Rousseau
- Institute of Biological and Chemical Systems - Functional Molecular Systems, Karlsruhe Institute of Technology, Karlsruhe, Germany.
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4
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Sun C, Xie K, Yang L, Cai S, Wang M, Zhu Y, Tao B, Zhu Y. HDAC6 Enhances Endoglin Expression through Deacetylation of Transcription Factor SP1, Potentiating BMP9-Induced Angiogenesis. Cells 2024; 13:490. [PMID: 38534334 DOI: 10.3390/cells13060490] [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: 01/09/2024] [Revised: 03/01/2024] [Accepted: 03/08/2024] [Indexed: 03/28/2024] Open
Abstract
Histone deacetylase 6 (HDAC6) plays a crucial role in the acetylation of non-histone proteins and is notably implicated in angiogenesis, though its underlying mechanisms were previously not fully understood. This study conducted transcriptomic and proteomic analyses on vascular endothelial cells with HDAC6 knockdown, identifying endoglin (ENG) as a key downstream protein regulated by HDAC6. This protein is vital for maintaining vascular integrity and plays a complex role in angiogenesis, particularly in its interaction with bone morphogenetic protein 9 (BMP9). In experiments using human umbilical vein endothelial cells (HUVECs), the pro-angiogenic effects of BMP9 were observed, which diminished following the knockdown of HDAC6 and ENG. Western blot analysis revealed that BMP9 treatment increased SMAD1/5/9 phosphorylation, a process hindered by HDAC6 knockdown, correlating with reduced ENG expression. Mechanistically, our study indicates that HDAC6 modulates ENG transcription by influencing promoter activity, leading to increased acetylation of transcription factor SP1 and consequently altering its transcriptional activity. Additionally, the study delves into the structural role of HDAC6, particularly its CD2 domain, in regulating SP1 acetylation and subsequently ENG expression. In conclusion, the present study underscores the critical function of HDAC6 in modulating SP1 acetylation and ENG expression, thereby significantly affecting BMP9-mediated angiogenesis. This finding highlights the potential of HDAC6 as a therapeutic target in angiogenesis-related processes.
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Affiliation(s)
- Chen Sun
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai 200032, China
- State Key Laboratory of Quality Research in Chinese Medicine and School of Pharmacy, Macau University of Science and Technology, Avenida WaiLong, Taipa, Macau 999078, China
| | - Kuifang Xie
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Lejie Yang
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Shengyang Cai
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Mingjie Wang
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Yizhun Zhu
- State Key Laboratory of Quality Research in Chinese Medicine and School of Pharmacy, Macau University of Science and Technology, Avenida WaiLong, Taipa, Macau 999078, China
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 200433, China
| | - Beibei Tao
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai 200032, China
| | - Yichun Zhu
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University Shanghai Medical College, Shanghai 200032, China
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5
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Sharma S, Ehrlich M, Zhang M, Blobe GC, Henis YI. NRP1 interacts with endoglin and VEGFR2 to modulate VEGF signaling and endothelial cell sprouting. Commun Biol 2024; 7:112. [PMID: 38242992 PMCID: PMC10799020 DOI: 10.1038/s42003-024-05798-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 01/09/2024] [Indexed: 01/21/2024] Open
Abstract
Endothelial cells express neuropilin 1 (NRP1), endoglin (ENG) and vascular endothelial growth factor receptor 2 (VEGFR2), which regulate VEGF-A-mediated vascular development and angiogenesis. However, the link between complex formation among these receptors with VEGF-A-induced signaling and biology is yet unclear. Here, we quantify surface receptor interactions by IgG-mediated immobilization of one receptor, and fluorescence recovery after photobleaching (FRAP) measurements of the mobility of another coexpressed receptor. We observe stable ENG/NRP1, ENG/VEGFR2, and NRP1/VEGFR2 complexes, which are enhanced by VEGF-A. ENG augments NRP1/VEGFR2 interactions, suggesting formation of tripartite complexes bridged by ENG. Effects on signaling are measured in murine embryonic endothelial cells expressing (MEEC+/+) or lacking (MEEC-/-) ENG, along with NRP1 and/or ENG overexpression or knockdown. We find that optimal VEGF-A-mediated phosphorylation of VEGFR2 and Erk1/2 requires ENG and NRP1. ENG or NRP1 increase VEGF-A-induced sprouting, becoming optimal in cells expressing all three receptors, and both processes are inhibited by a MEK1/2 inhibitor. We propose a model where the maximal potency of VEGF-A involves a tripartite complex where ENG bridges VEGFR2 and NRP1, providing an attractive therapeutic target for modulation of VEGF-A signaling and biological responses.
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Affiliation(s)
- Swati Sharma
- Department of Neurobiology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Marcelo Ehrlich
- Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Manqi Zhang
- Department of Medicine, Duke University Medical Center, Durham, NC, 27708, USA
| | - Gerard C Blobe
- Department of Medicine, Duke University Medical Center, Durham, NC, 27708, USA
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, 27708, USA
| | - Yoav I Henis
- Department of Neurobiology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel.
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Puerto-Camacho P, Díaz-Martín J, Olmedo-Pelayo J, Bolado-Carrancio A, Salguero-Aranda C, Jordán-Pérez C, Esteban-Medina M, Álamo-Álvarez I, Delgado-Bellido D, Lobo-Selma L, Dopazo J, Sastre A, Alonso J, Grünewald TGP, Bernabeu C, Byron A, Brunton VG, Amaral AT, Álava ED. Endoglin and MMP14 Contribute to Ewing Sarcoma Spreading by Modulation of Cell–Matrix Interactions. Int J Mol Sci 2022; 23:ijms23158657. [PMID: 35955799 PMCID: PMC9369355 DOI: 10.3390/ijms23158657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/14/2022] [Accepted: 07/22/2022] [Indexed: 01/26/2023] Open
Abstract
Endoglin (ENG) is a mesenchymal stem cell (MSC) marker typically expressed by active endothelium. This transmembrane glycoprotein is shed by matrix metalloproteinase 14 (MMP14). Our previous work demonstrated potent preclinical activity of first-in-class anti-ENG antibody-drug conjugates as a nascent strategy to eradicate Ewing sarcoma (ES), a devastating rare bone/soft tissue cancer with a putative MSC origin. We also defined a correlation between ENG and MMP14 expression in ES. Herein, we show that ENG expression is significantly associated with a dismal prognosis in a large cohort of ES patients. Moreover, both ENG/MMP14 are frequently expressed in primary ES tumors and metastasis. To deepen in their functional relevance in ES, we conducted transcriptomic and proteomic profiling of in vitro ES models that unveiled a key role of ENG and MMP14 in cell mechano-transduction. Migration and adhesion assays confirmed that loss of ENG disrupts actin filament assembly and filopodia formation, with a concomitant effect on cell spreading. Furthermore, we observed that ENG regulates cell–matrix interaction through activation of focal adhesion signaling and protein kinase C expression. In turn, loss of MMP14 contributed to a more adhesive phenotype of ES cells by modulating the transcriptional extracellular matrix dynamics. Overall, these results suggest that ENG and MMP14 exert a significant role in mediating correct spreading machinery of ES cells, impacting the aggressiveness of the disease.
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Affiliation(s)
- Pilar Puerto-Camacho
- Institute of Biomedicine of Sevilla (IBiS), Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Molecular Pathology of Sarcomas, 41013 Seville, Spain
| | - Juan Díaz-Martín
- Institute of Biomedicine of Sevilla (IBiS), Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Molecular Pathology of Sarcomas, 41013 Seville, Spain
- Department of Normal and Pathological Cytology and Histology, School of Medicine, University of Seville, 41009 Seville, Spain
| | - Joaquín Olmedo-Pelayo
- Institute of Biomedicine of Sevilla (IBiS), Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Molecular Pathology of Sarcomas, 41013 Seville, Spain
- Department of Normal and Pathological Cytology and Histology, School of Medicine, University of Seville, 41009 Seville, Spain
| | - Alfonso Bolado-Carrancio
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Carmen Salguero-Aranda
- Institute of Biomedicine of Sevilla (IBiS), Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Molecular Pathology of Sarcomas, 41013 Seville, Spain
- Department of Normal and Pathological Cytology and Histology, School of Medicine, University of Seville, 41009 Seville, Spain
| | - Carmen Jordán-Pérez
- Institute of Biomedicine of Sevilla (IBiS), Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Molecular Pathology of Sarcomas, 41013 Seville, Spain
| | - Marina Esteban-Medina
- Clinical Bioinformatics Area, Fundación Progreso y Salud (FPS), CDCA, Hospital Virgen del Rocío, 41013 Seville, Spain
| | - Inmaculada Álamo-Álvarez
- Clinical Bioinformatics Area, Fundación Progreso y Salud (FPS), CDCA, Hospital Virgen del Rocío, 41013 Seville, Spain
| | - Daniel Delgado-Bellido
- Institute of Biomedicine of Sevilla (IBiS), Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Molecular Pathology of Sarcomas, 41013 Seville, Spain
| | - Laura Lobo-Selma
- Institute of Biomedicine of Sevilla (IBiS), Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Molecular Pathology of Sarcomas, 41013 Seville, Spain
- Department of Normal and Pathological Cytology and Histology, School of Medicine, University of Seville, 41009 Seville, Spain
| | - Joaquín Dopazo
- Clinical Bioinformatics Area, Fundación Progreso y Salud (FPS), CDCA, Hospital Virgen del Rocío, 41013 Seville, Spain
| | - Ana Sastre
- Unidad Hemato-oncología Pediátrica, Hospital Infantil Universitario La Paz, 28046 Madrid, Spain
| | - Javier Alonso
- Unidad Hemato-oncología Pediátrica, Hospital Infantil Universitario La Paz, 28046 Madrid, Spain
- Unidad de Tumores Sólidos Infantiles, Instituto de Investigación de Enfermedades Raras, Instituto de Salud Carlos III (IIER-ISCIII), 28029 Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos III (CB06/07/1009; CIBERER-ISCIII), 28029 Madrid, Spain
| | - Thomas G. P. Grünewald
- Division of Translational Pediatric Sarcoma Research, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
- Hopp-Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany
- Institute of Pathology, Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Carmelo Bernabeu
- Division of Translational Pediatric Sarcoma Research, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
- Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas (CSIC), 28040 Madrid, Spain
| | - Adam Byron
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
- Division of Molecular and Cellular Function, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK
| | - Valerie G. Brunton
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Ana Teresa Amaral
- Institute of Biomedicine of Sevilla (IBiS), Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Molecular Pathology of Sarcomas, 41013 Seville, Spain
- Department of Normal and Pathological Cytology and Histology, School of Medicine, University of Seville, 41009 Seville, Spain
- Correspondence: (A.T.A.); (E.D.Á.)
| | - Enrique De Álava
- Institute of Biomedicine of Sevilla (IBiS), Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Molecular Pathology of Sarcomas, 41013 Seville, Spain
- Department of Normal and Pathological Cytology and Histology, School of Medicine, University of Seville, 41009 Seville, Spain
- Correspondence: (A.T.A.); (E.D.Á.)
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Chen Y, Liu Y, Gao X. The Application of Single-Cell Technologies in Cardiovascular Research. Front Cell Dev Biol 2021; 9:751371. [PMID: 34708045 PMCID: PMC8542723 DOI: 10.3389/fcell.2021.751371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 09/21/2021] [Indexed: 12/21/2022] Open
Abstract
Cardiovascular diseases (CVDs) are the leading cause of deaths in the world. The intricacies of the cellular composition and tissue microenvironment in heart and vasculature complicate the dissection of molecular mechanisms of CVDs. Over the past decade, the rapid development of single-cell omics technologies generated vast quantities of information at various biological levels, which have shed light on the cellular and molecular dynamics in cardiovascular development, homeostasis and diseases. Here, we summarize the latest single-cell omics techniques, and show how they have facilitated our understanding of cardiovascular biology. We also briefly discuss the clinical value and future outlook of single-cell applications in the field.
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Affiliation(s)
- Yinan Chen
- Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen, China.,State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yang Liu
- Department of Vascular Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiang Gao
- Department of Vascular Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
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8
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Abstract
Thrombocytopoiesis is a complex process beginning at the level of hematopoietic stem cells, which ultimately generate megakaryocytes, large marrow cells with a distinctive morphology, and then, through a process of terminal maturation, megakaryocytes shed thousands of platelets into the circulation. This process is controlled by intrinsic and extrinsic factors. Emerging data indicate that an important intrinsic control on the late stages of thrombopoiesis is exerted by integrins, a family of transmembrane receptors composed of one α and one β subunit. One β subunit expressed by megakaryocytes is the β1 integrin, the role of which in the regulation of platelet formation is beginning to be clarified. Here, we review recent data indicating that activation of β1 integrin by outside-in and inside-out signaling regulates the interaction of megakaryocytes with the endosteal niche, which triggers their maturation, while its inactivation by galactosylation determines the migration of these cells to the perivascular niche, where they complete their terminal maturation and release platelets in the bloodstream. Furthermore, β1 integrin mediates the activation of transforming growth factor β (TGF-β), a protein produced by megakaryocytes that may act in an autocrine fashion to halt their maturation and affect the composition of their surrounding extracellular matrix. These findings suggest that β1 integrin could be a therapeutic target for inherited and acquired disorders of platelet production.
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Affiliation(s)
- Maria Mazzarini
- Biomedical and Neuromotor Sciences, Alma Mater University Bologna, Italy
| | - Paola Verachi
- Biomedical and Neuromotor Sciences, Alma Mater University Bologna, Italy
| | - Fabrizio Martelli
- National Center for Preclinical and Clinical Research and Evaluation of Pharmaceutical Drugs, Rome, Italy
| | - Anna Rita Migliaccio
- University Campus Biomedico, Rome, Italy
- Myeloproliferative Neoplasm-Research Consortium, New York, NY, USA
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9
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The BMP Pathway in Blood Vessel and Lymphatic Vessel Biology. Int J Mol Sci 2021; 22:ijms22126364. [PMID: 34198654 PMCID: PMC8232321 DOI: 10.3390/ijms22126364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 11/16/2022] Open
Abstract
Bone morphogenetic proteins (BMPs) were originally identified as the active components in bone extracts that can induce ectopic bone formation. In recent decades, their key role has broadly expanded beyond bone physiology and pathology. Nowadays, the BMP pathway is considered an important player in vascular signaling. Indeed, mutations in genes encoding different components of the BMP pathway cause various severe vascular diseases. Their signaling contributes to the morphological, functional and molecular heterogeneity among endothelial cells in different vessel types such as arteries, veins, lymphatic vessels and capillaries within different organs. The BMP pathway is a remarkably fine-tuned pathway. As a result, its signaling output in the vessel wall critically depends on the cellular context, which includes flow hemodynamics, interplay with other vascular signaling cascades and the interaction of endothelial cells with peri-endothelial cells and the surrounding matrix. In this review, the emerging role of BMP signaling in lymphatic vessel biology will be highlighted within the framework of BMP signaling in the circulatory vasculature.
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10
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Jeng KS, Sheen IS, Lin SS, Leu CM, Chang CF. The Role of Endoglin in Hepatocellular Carcinoma. Int J Mol Sci 2021; 22:ijms22063208. [PMID: 33809908 PMCID: PMC8004096 DOI: 10.3390/ijms22063208] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/19/2021] [Accepted: 03/19/2021] [Indexed: 12/31/2022] Open
Abstract
Endoglin (CD105) is a type-1 integral transmembrane glycoprotein and coreceptor for transforming growth factor-β (TGF-β) ligands. The endoglin/TGF-β signaling pathway regulates hemostasis, cell proliferation/migration, extracellular matrix (ECM) synthesis and angiogenesis. Angiogenesis contributes to early progression, invasion, postoperative recurrence, and metastasis in hepatocellular carcinoma (HCC), one of the most widespread malignancies globally. Endoglin is overexpressed in newly formed HCC microvessels. It increases microvessel density in cirrhotic and regenerative HCC nodules. In addition, circulating endoglin is present in HCC patients, suggesting potential for use as a diagnostic or prognostic factor. HCC angiogenesis is dynamic and endoglin expression varies by stage. TRC105 (carotuximab) is an antibody against endoglin, and three of its clinical trials were related to liver diseases. A partial response was achieved when combining TRC105 with sorafenib. Although antiangiogenic therapy still carries some risks, combination therapy with endoglin inhibitors or other targeted therapies holds promise.
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Affiliation(s)
- Kuo-Shyang Jeng
- Division of General Surgery, Far Eastern Memorial Hospital, New Taipei 22060, Taiwan; (K.-S.J.); (S.-S.L.)
| | - I-Shyan Sheen
- Department of Hepatogastroenterology, Chang-Gung Memorial Hospital, Linkou Medical Center, Chang-Gung University, Taoyuan city 33305, Taiwan;
| | - Shu-Sheng Lin
- Division of General Surgery, Far Eastern Memorial Hospital, New Taipei 22060, Taiwan; (K.-S.J.); (S.-S.L.)
| | - Chuen-Miin Leu
- Institute of Microbiology and Immunology, National Yang-Ming Chiao-Tung University, Taipei city 11221, Taiwan;
| | - Chiung-Fang Chang
- Division of General Surgery, Far Eastern Memorial Hospital, New Taipei 22060, Taiwan; (K.-S.J.); (S.-S.L.)
- Correspondence: ; Tel.: +886-2-7728-4564
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11
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Endoglin in the Spotlight to Treat Cancer. Int J Mol Sci 2021; 22:ijms22063186. [PMID: 33804796 PMCID: PMC8003971 DOI: 10.3390/ijms22063186] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/06/2021] [Accepted: 03/17/2021] [Indexed: 01/02/2023] Open
Abstract
A spotlight has been shone on endoglin in recent years due to that fact of its potential to serve as both a reliable disease biomarker and a therapeutic target. Indeed, endoglin has now been assigned many roles in both physiological and pathological processes. From a molecular point of view, endoglin mainly acts as a co-receptor in the canonical TGFβ pathway, but also it may be shed and released from the membrane, giving rise to the soluble form, which also plays important roles in cell signaling. In cancer, in particular, endoglin may contribute to either an oncogenic or a non-oncogenic phenotype depending on the cell context. The fact that endoglin is expressed by neoplastic and non-neoplastic cells within the tumor microenvironment suggests new possibilities for targeted therapies. Here, we aimed to review and discuss the many roles played by endoglin in different tumor types, as well as the strong evidence provided by pre-clinical and clinical studies that supports the therapeutic targeting of endoglin as a novel clinical strategy.
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12
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Tazat K, Pomeraniec-Abudy L, Hector-Greene M, Szilágyi SS, Sharma S, Cai EM, Corona AL, Ehrlich M, Blobe GC, Henis YI. ALK1 regulates the internalization of endoglin and the type III TGF-β receptor. Mol Biol Cell 2021; 32:605-621. [PMID: 33566682 PMCID: PMC8101464 DOI: 10.1091/mbc.e20-03-0199] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Complex formation and endocytosis of transforming growth factor-β (TGF-β) receptors play important roles in signaling. However, their interdependence remained unexplored. Here, we demonstrate that ALK1, a TGF-β type I receptor prevalent in endothelial cells, forms stable complexes at the cell surface with endoglin and with type III TGF-β receptors (TβRIII). We show that ALK1 undergoes clathrin-mediated endocytosis (CME) faster than ALK5, type II TGF-β receptor (TβRII), endoglin, or TβRIII. These complexes regulate the endocytosis of the TGF-β receptors, with a major effect mediated by ALK1. Thus, ALK1 enhances the endocytosis of TβRIII and endoglin, while ALK5 and TβRII mildly enhance endoglin, but not TβRIII, internalization. Conversely, the slowly endocytosed endoglin has no effect on the endocytosis of either ALK1, ALK5, or TβRII, while TβRIII has a differential effect, slowing the internalization of ALK5 and TβRII, but not ALK1. Such effects may be relevant to signaling, as BMP9-mediated Smad1/5/8 phosphorylation is inhibited by CME blockade in endothelial cells. We propose a model that links TGF-β receptor oligomerization and endocytosis, based on which endocytosis signals are exposed/functional in specific receptor complexes. This has broad implications for signaling, implying that complex formation among various receptors regulates their surface levels and signaling intensities.
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Affiliation(s)
- Keren Tazat
- Department of Neurobiology, Tel Aviv University, Tel Aviv 6997801, Israel
| | | | | | | | - Swati Sharma
- Department of Neurobiology, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Elise M Cai
- Department of Medicine, Duke University Medical Center, Durham, NC 27708
| | - Armando L Corona
- Department of Medicine, Duke University Medical Center, Durham, NC 27708
| | - Marcelo Ehrlich
- Department of Cell Research and Immunology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Gerard C Blobe
- Department of Medicine, Duke University Medical Center, Durham, NC 27708
| | - Yoav I Henis
- Department of Neurobiology, Tel Aviv University, Tel Aviv 6997801, Israel
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13
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Du J, Yin G, Hu Y, Shi S, Jiang J, Song X, Zhang Z, Wei Z, Tang C, Lyu H. Coicis semen protects against focal cerebral ischemia-reperfusion injury by inhibiting oxidative stress and promoting angiogenesis via the TGFβ/ALK1/Smad1/5 signaling pathway. Aging (Albany NY) 2020; 13:877-893. [PMID: 33290255 PMCID: PMC7835068 DOI: 10.18632/aging.202194] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 09/28/2020] [Indexed: 12/16/2022]
Abstract
Background: Ischemic stroke is a devastating disease that causes long-term disability. However, its pathogenesis is unclear, and treatments for ischemic stroke are limited. Recent studies indicate that oxidative stress is involved in the pathological progression of ischemic stroke and that angiogenesis participates in recovery from ischemic stroke. Furthermore, previous studies have shown that Coicis Semen has antioxidative and anti-inflammatory effects in a variety of diseases. In the present study, we investigated whether Coicis Semen has a protective effect against ischemic stroke and the mechanism of this protective effect. Results: Coicis Semen administration significantly decreased the infarct volume and mortality and alleviated neurological deficits at 3, 7 and 14 days after MCAO. In addition, cerebral edema at 3 days poststroke was ameliorated by Coicis Semen treatment. DHE staining showed that ROS levels in the vehicle group were increased at 3 days after reperfusion and then gradually declined, but Coicis Semen treatment reduced ROS levels. The levels of GSH and SOD in the brain were increased by Coicis Semen treatment, while MDA levels were reduced. Furthermore, Coicis Semen treatment decreased the extravasation of EB dye in MCAO mouse brains and elevated expression of the tight junction proteins ZO-1 and Occludin. Double immunofluorescence staining and western blot analysis showed that the expression of angiogenesis markers and TGFβ pathway-related proteins was increased by Coicis Semen administration. Consistent with the in vivo results, cytotoxicity assays showed that Coicis Semen substantially promoted HUVEC survival following OGD/RX in vitro. Additionally, though LY2109761 inhibited the activation of TGFβ signaling in OGD/RX model animals, Coicis Semen cotreatment markedly reversed the downregulation of TGFβ pathway-related proteins and increased VEGF levels. Methods: Adult male wild-type C57BL/6J mice were used to develop a middle cerebral artery occlusion (MCAO) stroke model. Infarct size, neurological deficits and behavior were evaluated on days 3, 7 and 14 after staining. In addition, changes in superoxide dismutase (SOD), GSH and malondialdehyde (MDA) levels were detected with a commercial kit. Blood-brain barrier (BBB) permeability was assessed with Evans blue (EB) dye. Western blotting was also performed to measure the levels of tight junction proteins of the BBB. Additionally, ELISA was performed to measure the level of VEGF in the brain. The colocalization of CD31, angiogenesis markers, and Smad1/5 was assessed by double immunofluorescent staining. TGFβ pathway-related proteins were measured by western blotting. Furthermore, the cell viability of human umbilical vein endothelial cells (HUVECs) following oxygen-glucose deprivation/reoxygenation (OGD/RX) was measured by Cell Counting Kit (CCK)-8 assay. Conclusions: Coicis Semen treatment alleviates brain damage induced by ischemic stroke through inhibiting oxidative stress and promoting angiogenesis by activating the TGFβ/ALK1 signaling pathway.
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Affiliation(s)
- Jin Du
- Department of Neurosurgery, The People’s Hospital of Chizhou, Chizhou 247000, Anhui, China
| | - Guobing Yin
- Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
| | - Yida Hu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
| | - Si Shi
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
| | - Jiazhen Jiang
- Department of Emergency, Huashan Hospital North, Fudan University, Shanghai 201907, China
| | - Xiaoyan Song
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Zhetao Zhang
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, Anhui, China
| | - Zeyuan Wei
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, Anhui, China
| | - Chaoliang Tang
- Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
| | - Haiyan Lyu
- Department of Neurology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
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14
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Jann J, Drevelle O, Lauzon MA, Faucheux N. Adhesion, intracellular signalling and osteogenic differentiation of mesenchymal progenitor cells and preosteoblasts on poly(epsilon)caprolactone films functionalized by peptides derived from fibronectin and/or BMP-9. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 114:111088. [DOI: 10.1016/j.msec.2020.111088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 04/14/2020] [Accepted: 05/08/2020] [Indexed: 12/17/2022]
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15
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Hiepen C, Mendez PL, Knaus P. It Takes Two to Tango: Endothelial TGFβ/BMP Signaling Crosstalk with Mechanobiology. Cells 2020; 9:E1965. [PMID: 32858894 PMCID: PMC7564048 DOI: 10.3390/cells9091965] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/19/2020] [Accepted: 08/22/2020] [Indexed: 02/06/2023] Open
Abstract
Bone morphogenetic proteins (BMPs) are members of the transforming growth factor-beta (TGFβ) superfamily of cytokines. While some ligand members are potent inducers of angiogenesis, others promote vascular homeostasis. However, the precise understanding of the molecular mechanisms underlying these functions is still a growing research field. In bone, the tissue in which BMPs were first discovered, crosstalk of TGFβ/BMP signaling with mechanobiology is well understood. Likewise, the endothelium represents a tissue that is constantly exposed to multiple mechanical triggers, such as wall shear stress, elicited by blood flow or strain, and tension from the surrounding cells and to the extracellular matrix. To integrate mechanical stimuli, the cytoskeleton plays a pivotal role in the transduction of these forces in endothelial cells. Importantly, mechanical forces integrate on several levels of the TGFβ/BMP pathway, such as receptors and SMADs, but also global cell-architecture and nuclear chromatin re-organization. Here, we summarize the current literature on crosstalk mechanisms between biochemical cues elicited by TGFβ/BMP growth factors and mechanical cues, as shear stress or matrix stiffness that collectively orchestrate endothelial function. We focus on the different subcellular compartments in which the forces are sensed and integrated into the TGFβ/BMP growth factor signaling.
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Affiliation(s)
| | | | - Petra Knaus
- Knaus-Lab/Signal Transduction, Institute for Chemistry and Biochemistry, Freie Universitaet Berlin, 14195 Berlin, Germany; (C.H.); (P.-L.M.)
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16
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Malinauskas T, Peer TV, Bishop B, Mueller TD, Siebold C. Repulsive guidance molecules lock growth differentiation factor 5 in an inhibitory complex. Proc Natl Acad Sci U S A 2020; 117:15620-15631. [PMID: 32576689 PMCID: PMC7354924 DOI: 10.1073/pnas.2000561117] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Repulsive guidance molecules (RGMs) are cell surface proteins that regulate the development and homeostasis of many tissues and organs, including the nervous, skeletal, and immune systems. They control fundamental biological processes, such as migration and differentiation by direct interaction with the Neogenin (NEO1) receptor and function as coreceptors for the bone morphogenetic protein (BMP)/growth differentiation factor (GDF) family. We determined crystal structures of all three human RGM family members in complex with GDF5, as well as the ternary NEO1-RGMB-GDF5 assembly. Surprisingly, we show that all three RGMs inhibit GDF5 signaling, which is in stark contrast to RGM-mediated enhancement of signaling observed for other BMPs, like BMP2. Despite their opposite effect on GDF5 signaling, RGMs occupy the BMP type 1 receptor binding site similar to the observed interactions in RGM-BMP2 complexes. In the NEO1-RGMB-GDF5 complex, RGMB physically bridges NEO1 and GDF5, suggesting cross-talk between the GDF5 and NEO1 signaling pathways. Our crystal structures, combined with structure-guided mutagenesis of RGMs and BMP ligands, binding studies, and cellular assays suggest that RGMs inhibit GDF5 signaling by competing with GDF5 type 1 receptors. While our crystal structure analysis and in vitro binding data initially pointed towards a simple competition mechanism between RGMs and type 1 receptors as a possible basis for RGM-mediated GDF5 inhibition, further experiments utilizing BMP2-mimicking GDF5 variants clearly indicate a more complex mechanism that explains how RGMs can act as a functionality-changing switch for two structurally and biochemically similar signaling molecules.
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Affiliation(s)
- Tomas Malinauskas
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, OX3 7BN Oxford, United Kingdom;
| | - Tina V Peer
- Department of Molecular Plant Physiology and Biophysics, Julius-von-Sachs Institute, University of Würzburg, 97082 Würzburg, Germany
| | - Benjamin Bishop
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, OX3 7BN Oxford, United Kingdom
| | - Thomas D Mueller
- Department of Molecular Plant Physiology and Biophysics, Julius-von-Sachs Institute, University of Würzburg, 97082 Würzburg, Germany
| | - Christian Siebold
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, OX3 7BN Oxford, United Kingdom;
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17
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Comparison of Proangiogenic Effects of Adipose-Derived Stem Cells and Foreskin Fibroblast Exosomes on Artificial Dermis Prefabricated Flaps. Stem Cells Int 2020; 2020:5293850. [PMID: 32089706 PMCID: PMC7013349 DOI: 10.1155/2020/5293850] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 12/12/2019] [Accepted: 12/31/2019] [Indexed: 01/19/2023] Open
Abstract
Large prefabricated flaps often suffer from necrosis or poor healing due to a lack of new blood vessels and related factors that promote angiogenesis. The innovative use of adipose-derived stem cell exosomes (ADSC-Exo) resolves the problem of vascularization of prefabricated flaps. We analyzed the differential microRNA (miRNA) expression in ADSC-Exo using next-generation sequencing (NGS) technology to explore their potential mechanisms in promoting vascularization. We observed that ADSC-Exo could significantly promote the vascularization of artificial dermis prefabricated flaps compared with human foreskin fibroblast exosomes. NGS indicated that there were some differentially expressed miRNAs in both exosomes. Bioinformatics analysis suggested that significantly upregulated hsa-miR-760 and significantly downregulated hsa-miR-423-3p in ADSC-Exo could regulate the expression of the ITGA5 and HDAC5 genes, respectively, to promote the vascularization of skin flaps. In summary, ADSC-Exo can promote skin-flap vascularization, and thereby resolve the problem of insufficient neovascularization of artificial dermis prefabricated flaps, thus expanding the application of prefabricated skin-flap transplantation.
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18
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About F, Bibert S, Jouanguy E, Nalpas B, Lorenzo L, Rattina V, Zarhrate M, Hanein S, Munteanu M, Müllhaupt B, Semela D, Semmo N, Casanova JL, Theodorou I, Sultanik P, Poynard T, Pol S, Bochud PY, Cobat A, Abel L. Identification of an Endoglin Variant Associated With HCV-Related Liver Fibrosis Progression by Next-Generation Sequencing. Front Genet 2019; 10:1024. [PMID: 31749832 PMCID: PMC6844190 DOI: 10.3389/fgene.2019.01024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 09/24/2019] [Indexed: 12/13/2022] Open
Abstract
Despite the astonishing progress in treating chronic hepatitis C virus (HCV) infection with direct-acting antiviral agents, liver fibrosis remains a major health concern in HCV infected patients, in particular due to the treatment cost and insufficient HCV screening in many countries. Only a fraction of patients with chronic HCV infection develop liver fibrosis. While there is evidence that host genetic factors are involved in the development of liver fibrosis, the common variants identified so far, in particular by genome-wide association studies, were found to have limited effects. Here, we conducted an exome association study in 88 highly selected HCV-infected patients with and without fibrosis. A strategy focusing on TGF-β pathway genes revealed an enrichment in rare variants of the endoglin gene (ENG) in fibrosis patients. Replication studies in additional cohorts (617 patients) identified one specific ENG variant, Thr5Met, with an overall odds ratio for fibrosis development in carriers of 3.04 (1.39-6.69). Our results suggest that endoglin, a key player in TGF-β signaling, is involved in HCV-related liver fibrogenesis.
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Affiliation(s)
- Frédégonde About
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Inserm U1163, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France
| | - Stéphanie Bibert
- Infectious Diseases Service, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Emmanuelle Jouanguy
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Inserm U1163, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France
| | - Bertrand Nalpas
- Inserm Scientific Information and Communication Department, Inserm, Paris, France
| | - Lazaro Lorenzo
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Inserm U1163, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France
| | - Vimel Rattina
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Inserm U1163, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France
| | - Mohammed Zarhrate
- Genomics Core Facility, Imagine Institute, Research Federative Structure Necker, Inserm U1163 and Inserm US24/CNRS UMS3633, Paris Descartes Sorbonne Paris Cite University, Paris, France
| | - Sylvain Hanein
- Paris Descartes University, Imagine Institute, Paris, France.,Translational Genetics Platform, Inserm U1163, Imagine Institute, Paris Descartes University, Paris, France
| | | | - Beat Müllhaupt
- Gastroenterology and Hepatology Service, University Hospital of Zürich, Zürich, Switzerland
| | - David Semela
- Division of Gastroenterology and Hepatology, Kantonsspital Sankt Gallen, Sankt Gallen, Switzerland
| | - Nasser Semmo
- Department of Visceral Surgery and Medicine, Department of Hepatology, Inselspital Bern, Bern, Switzerland
| | - Jean-Laurent Casanova
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Inserm U1163, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France.,St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, United States.,Howard Hughes Medical Institute, New York, NY, United States.,Pediatric Hematology-Immunology Unit, Necker Hospital for Sick Children, AP-HP, Paris, France
| | - Ioannis Theodorou
- Center for Immunology and Infectious Diseases, Inserm UMR S 1135, Pierre et Marie Curie University, Paris, France
| | - Philippe Sultanik
- Université Paris Centre; U1223, Institut Pasteur; Liver Department, Hôpital Cochin, APHP; Paris, France
| | - Thierry Poynard
- Hepatology Department, Assistance Publique-Hôpitaux de Paris, Pitié-Salpétrière Hospital, Paris, France.,Saint-Antoine Research Center & Institute of Cardiometabolism and Nutrition (ICAN), Inserm, Sorbonne University, Paris, France
| | - Stanislas Pol
- Université Paris Centre; U1223, Institut Pasteur; Liver Department, Hôpital Cochin, APHP; Paris, France
| | - Pierre-Yves Bochud
- Infectious Diseases Service, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Aurélie Cobat
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Inserm U1163, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France
| | - Laurent Abel
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Inserm U1163, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France.,St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, United States
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19
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Kuninty PR, Bansal R, De Geus SWL, Mardhian DF, Schnittert J, van Baarlen J, Storm G, Bijlsma MF, van Laarhoven HW, Metselaar JM, Kuppen PJK, Vahrmeijer AL, Östman A, Sier CFM, Prakash J. ITGA5 inhibition in pancreatic stellate cells attenuates desmoplasia and potentiates efficacy of chemotherapy in pancreatic cancer. SCIENCE ADVANCES 2019; 5:eaax2770. [PMID: 31517053 PMCID: PMC6726450 DOI: 10.1126/sciadv.aax2770] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 08/05/2019] [Indexed: 05/08/2023]
Abstract
Abundant desmoplastic stroma is the hallmark for pancreatic ductal adenocarcinoma (PDAC), which not only aggravates the tumor growth but also prevents tumor penetration of chemotherapy, leading to treatment failure. There is an unmet clinical need to develop therapeutic solutions to the tumor penetration problem. In this study, we investigated the therapeutic potential of integrin α5 (ITGA5) receptor in the PDAC stroma. ITGA5 was overexpressed in the tumor stroma from PDAC patient samples, and overexpression was inversely correlated with overall survival. In vitro, knockdown of ITGA5 inhibited differentiation of human pancreatic stellate cells (hPSCs) and reduced desmoplasia in vivo. Our novel peptidomimetic AV3 against ITGA5 inhibited hPSC activation and enhanced the antitumor effect of gemcitabine in a 3D heterospheroid model. In vivo, AV3 showed a strong reduction of desmoplasia, leading to decompression of blood vasculature, enhanced tumor perfusion, and thereby the efficacy of gemcitabine in co-injection and patient-derived xenograft tumor models.
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Affiliation(s)
- Praneeth R. Kuninty
- Department of Biomaterials, Science and Technology, Section: Targeted Therapeutics, Faculty of Science and Technology, University of Twente, Enschede, Netherlands
| | - Ruchi Bansal
- Department of Biomaterials, Science and Technology, Section: Targeted Therapeutics, Faculty of Science and Technology, University of Twente, Enschede, Netherlands
| | | | - Deby F. Mardhian
- Department of Biomaterials, Science and Technology, Section: Targeted Therapeutics, Faculty of Science and Technology, University of Twente, Enschede, Netherlands
| | - Jonas Schnittert
- Department of Biomaterials, Science and Technology, Section: Targeted Therapeutics, Faculty of Science and Technology, University of Twente, Enschede, Netherlands
| | - Joop van Baarlen
- Laboratory Pathology Oost Netherlands (LabPON), Hengelo, Netherlands
| | - Gert Storm
- Department of Biomaterials, Science and Technology, Section: Targeted Therapeutics, Faculty of Science and Technology, University of Twente, Enschede, Netherlands
- Department of Pharmaceutics, Utrecht University, Utrecht, Netherlands
| | - Maarten F. Bijlsma
- Amsterdam University Medical Centre, University of Amsterdam, Amsterdam, Netherlands
| | | | - Josbert M. Metselaar
- ScarTec Therapeutics BV, Enschede, Netherlands
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH University Clinic, Forckenbeckstrasse 55, 52074 Aachen, Germany
| | - Peter J. K. Kuppen
- Department of Surgery, Leiden University Medical Center, Leiden, Netherlands
| | | | - Arne Östman
- Department of Oncology-Pathology, Cancer Center Karolinska, Karolinska Institutet, Stockholm, Sweden
| | - Cornelis F. M. Sier
- Department of Surgery, Leiden University Medical Center, Leiden, Netherlands
| | - Jai Prakash
- Department of Biomaterials, Science and Technology, Section: Targeted Therapeutics, Faculty of Science and Technology, University of Twente, Enschede, Netherlands
- ScarTec Therapeutics BV, Enschede, Netherlands
- Department of Oncology-Pathology, Cancer Center Karolinska, Karolinska Institutet, Stockholm, Sweden
- Corresponding author.
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20
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Cibi DM, Mia MM, Guna Shekeran S, Yun LS, Sandireddy R, Gupta P, Hota M, Sun L, Ghosh S, Singh MK. Neural crest-specific deletion of Rbfox2 in mice leads to craniofacial abnormalities including cleft palate. eLife 2019; 8:45418. [PMID: 31241461 PMCID: PMC6663295 DOI: 10.7554/elife.45418] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 06/25/2019] [Indexed: 12/17/2022] Open
Abstract
Alternative splicing (AS) creates proteomic diversity from a limited size genome by generating numerous transcripts from a single protein-coding gene. Tissue-specific regulators of AS are essential components of the gene regulatory network, required for normal cellular function, tissue patterning, and embryonic development. However, their cell-autonomous function in neural crest development has not been explored. Here, we demonstrate that splicing factor Rbfox2 is expressed in the neural crest cells (NCCs), and deletion of Rbfox2 in NCCs leads to cleft palate and defects in craniofacial bone development. RNA-Seq analysis revealed that Rbfox2 regulates splicing and expression of numerous genes essential for neural crest/craniofacial development. We demonstrate that Rbfox2-TGF-β-Tak1 signaling axis is deregulated by Rbfox2 deletion. Furthermore, restoration of TGF-β signaling by Tak1 overexpression can rescue the proliferation defect seen in Rbfox2 mutants. We also identified a positive feedback loop in which TGF-β signaling promotes expression of Rbfox2 in NCCs. Abnormalities affecting the head and face – such as a cleft lip or palate – are among the most common of all birth defects. These tissues normally develop from cells in the embryo known as the neural crest cells, and specifically a subset of these cells called the cranial neural crest cells. Most cases of cleft lip or palate are linked back to genes that affect the biology of this group of cells. The list of genes implicated in the impaired development of cranial neural crest cells code for proteins with a wide range of different activities. Some encode transcription factors – proteins that switch genes on or off. Others code for chromatin remodeling factors, which control how the DNA is packed inside cells. However, the role of another group of proteins – the splicing factors – remains unclear and warrants further investigation. When a gene is switched on its genetic code is first copied into a short-lived molecule called a transcript. These transcripts are then edited to form templates to build proteins. Splicing is one way that a transcript can be edited, which involves different pieces of the transcript being cut out and the remaining pieces being pasted together to form alternative versions of the final template. Splicing factors control this process. Cibi et al. now show that neural crest cells from mice make a splicing factor called Rbfox2 and that deleting this gene for this protein from only these cells leads to mice with a cleft palate and defects in the bones of their head and face. Further analysis helped to identify the transcripts that are spliced by Rbfox2, and the effects that these splicing events have on gene activity in mouse tissues that develop from cranial neural crest cells. Cibi et al. went on to find a signaling pathway that was impaired in the mutant cells that lacked Rbfox2. Forcing the mutant cells to over-produce one of the proteins involved in this signaling pathway (a protein named Tak1) was enough to compensate for the some of the defects caused by a lack of Rbfox2, suggesting it acts downstream of the splicing regulator. Lastly, Cibi et al. showed that another protein in this signaling pathway, called TGF-β, acted to increase how much Rbfox2 was made by neural crest cells. Together these findings may be relevant in human disease studies, given that altered TGF-β signaling is a common feature in many birth defects seen in humans.
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Affiliation(s)
- Dasan Mary Cibi
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore, Singapore
| | - Masum M Mia
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore, Singapore
| | - Shamini Guna Shekeran
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore, Singapore
| | - Lim Sze Yun
- National Heart Research Institute, National Heart Center, Singapore, Singapore
| | - Reddemma Sandireddy
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore, Singapore
| | - Priyanka Gupta
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore, Singapore
| | - Monalisa Hota
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore, Singapore
| | - Lei Sun
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore, Singapore
| | - Sujoy Ghosh
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore, Singapore
| | - Manvendra K Singh
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore, Singapore.,National Heart Research Institute, National Heart Center, Singapore, Singapore
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21
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Shidal C, Singh NP, Nagarkatti P, Nagarkatti M. MicroRNA-92 Expression in CD133 + Melanoma Stem Cells Regulates Immunosuppression in the Tumor Microenvironment via Integrin-Dependent Activation of TGFβ. Cancer Res 2019; 79:3622-3635. [PMID: 31015227 DOI: 10.1158/0008-5472.can-18-2659] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 03/19/2019] [Accepted: 04/18/2019] [Indexed: 12/27/2022]
Abstract
In addition to being refractory to treatment, melanoma cancer stem cells (CSC) are known to suppress host antitumor immunity, the underlying mechanisms of which need further elucidation. In this study, we established a novel role for miR-92 and its associated gene networks in immunosuppression. CSCs were isolated from the B16-F10 murine melanoma cell line based on expression of the putative CSC marker CD133 (Prominin-1). CD133+ cells were functionally distinct from CD133- cells and showed increased proliferation in vitro and enhanced tumorigenesis in vivo. CD133+ CSCs also exhibited a greater capacity to recruit immunosuppressive cell types during tumor formation, including FoxP3+ Tregs, myeloid-derived suppressor cells (MDSC), and M2 macrophages. Using microarray technology, we identified several miRs that were significantly downregulated in CD133+ cells compared with CD133- cells, including miR-92. Decreased expression of miR-92 in CSCs led to higher expression of target molecules integrin αV and α5 subunits, which, in turn, enhanced TGFβ activation, as evidenced by increased phosphorylation of SMAD2. CD133+ cells transfected with miR-92a mimic and injected in vivo showed significantly decreased tumor burden, which was associated with reduced immunosuppressive phenotype intratumorally. Using The Cancer Genome Atlas database of patients with melanoma, we also noted a positive correlation between integrin α5 and TGFβ1 expression levels and an inverse association between miR-92 expression and integrin alpha subunit expression. Collectively, this study suggests that a miR-92-driven signaling axis involving integrin activation of TGFβ in CSCs promotes enhanced tumorigenesis through induction of intratumoral immunosuppression. SIGNIFICANCE: CD133+ cells play an active role in suppressing melanoma antitumor immunity by modulating miR-92, which increases influx of immunosuppressive cells and TGFβ1 expression.
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Affiliation(s)
- Chris Shidal
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, South Carolina
| | - Narendra P Singh
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, South Carolina
| | - Prakash Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, South Carolina
| | - Mitzi Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, South Carolina.
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22
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Morshed A, Abbas AB, Hu J, Xu H. Shedding New Light on The Role of ανβ3 and α5β1 Integrins in Rheumatoid Arthritis. Molecules 2019; 24:E1537. [PMID: 31003546 PMCID: PMC6515208 DOI: 10.3390/molecules24081537] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/14/2019] [Accepted: 04/18/2019] [Indexed: 12/14/2022] Open
Abstract
ανβ3 and α5β1 are essential glycoproteins involved in the pathogenesis of rheumatoid arthritis (RA). Understanding of the role these integrins play in disease have been analyzed via description of cells-expressing ανβ3 and α5β1 and their mediators to trigger inflammation. ανβ3 and α5β1 facilitate cells-ECM and cell-cell communication, producing pro-inflammatory factors. Pro-inflammatory factors are essential for the building of undesirable new blood vessels termed angiogenesis which can further lead to destruction of bones and joints. Despite many attempts to target these glycoproteins, there are still some problems, therefore, there is still interest in understanding the synergistic role these integrins play in the pathogenesis of RA. The purpose of this review is to gain insights into the biological effects of ανβ3 and α5β1 in synovial tissues that are relevant to pathogenesis and therapy of RA.
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Affiliation(s)
- Arwa Morshed
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu Province, China Pharmaceutical University, Nanjing 210009, China.
| | - Abdul Baset Abbas
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu Province, China Pharmaceutical University, Nanjing 210009, China.
| | - Jialiang Hu
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu Province, China Pharmaceutical University, Nanjing 210009, China.
| | - Hanmei Xu
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu Province, China Pharmaceutical University, Nanjing 210009, China.
- Nanjing Anji Biotechnology Co. Ltd., Nanjing 210046, China.
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23
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Rossi E, Bernabeu C, Smadja DM. Endoglin as an Adhesion Molecule in Mature and Progenitor Endothelial Cells: A Function Beyond TGF-β. Front Med (Lausanne) 2019; 6:10. [PMID: 30761306 PMCID: PMC6363663 DOI: 10.3389/fmed.2019.00010] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 01/14/2019] [Indexed: 12/13/2022] Open
Abstract
Endoglin (ENG) is a transmembrane glycoprotein expressed on endothelial cells that functions as a co-receptor for several ligands of the transforming growth factor beta (TGF-β) family. ENG is also a recognized marker of angiogenesis and mutations in the endoglin gene are responsible for Hereditary Hemorrhagic Telangiectasia (HHT) type 1, a vascular disease characterized by defective angiogenesis, arteriovenous malformations, telangiectasia, and epistaxis. In addition to its involvement in the TGF-β family signaling pathways, several lines of evidence suggest that the extracellular domain of ENG has a role in integrin-mediated cell adhesion via its RGD motif. Indeed, we have described a role for endothelial ENG in leukocyte trafficking and extravasation via its binding to leukocyte integrins. We have also found that ENG is involved in vasculogenic properties of endothelial progenitor cells known as endothelial colony forming cells (ECFCs). Moreover, the binding of endothelial ENG to platelet integrins regulate the resistance to shear during platelet-endothelium interactions under inflammatory conditions. Because of the need for more effective treatments in HHT and the involvement of ENG in angiogenesis, current studies are aimed at identifying novel biological functions of ENG which could serve as a therapeutic target. This review focuses on the interaction between ENG and integrins with the aim to better understand the role of this protein in blood vessel formation driven by progenitor and mature endothelial cells.
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Affiliation(s)
- Elisa Rossi
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Inserm UMR-S1140, Paris, France
| | - Carmelo Bernabeu
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas, Centro de Investigación Biomédica en Red de Enfermedades Raras, Madrid, Spain
| | - David M Smadja
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Inserm UMR-S1140, Paris, France.,Department of Hematology, AP-HP, Hôpital Européen Georges Pompidou, Paris, France.,Laboratory of Biosurgical Research, Carpentier Foundation, Hôpital Européen Georges Pompidou, Paris, France
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24
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Kasprzak A, Adamek A. Role of Endoglin (CD105) in the Progression of Hepatocellular Carcinoma and Anti-Angiogenic Therapy. Int J Mol Sci 2018; 19:E3887. [PMID: 30563158 PMCID: PMC6321450 DOI: 10.3390/ijms19123887] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/02/2018] [Accepted: 12/03/2018] [Indexed: 02/08/2023] Open
Abstract
The liver is perfused by both arterial and venous blood, with a resulting abnormal microenvironment selecting for more-aggressive malignancies. Hepatocellular carcinoma (HCC) is the most frequent primary liver cancer, the sixth most common cancer globally, and the third leading cause of cancer-related mortality worldwide. HCC is characterized by its hypervascularization. Improving the efficiency of anti-angiogenic treatment and mitigation of anti-angiogenic drug resistance are the top priorities in the development of non-surgical HCC therapies. Endoglin (CD105), a transmembrane glycoprotein, is one of the transforming growth factor β (TGF-β) co-receptors. Involvement of that protein in angiogenesis of solid tumours is well documented. Endoglin is a marker of activated endothelial cells (ECs), and is preferentially expressed in the angiogenic endothelium of solid tumours, including HCC. HCC is associated with changes in CD105-positive ECs within and around the tumour. The large spectrum of endoglin effects in the liver is cell-type- and HCC- stage-specific. High expression of endoglin in non-tumour tissue suggests that this microenvironment might play an especially important role in the progression of HCC. Evaluation of tissue expression, as well as serum concentrations of this glycoprotein in HCC, tends to confirm its role as an important biomarker in HCC diagnosis and prognosis. The role of endoglin in liver fibrosis and HCC progression also makes it an attractive therapeutic target. Despite these facts, the exact molecular mechanisms of endoglin functioning in hepatocarcinogenesis are still poorly understood. This review summarizes the current data concerning the role and signalling pathways of endoglin in hepatocellular carcinoma development and progression, and provides an overview of the strategies available for a specific targeting of CD105 in anti-angiogenic therapy in HCC.
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Affiliation(s)
- Aldona Kasprzak
- Department of Histology and Embryology, University of Medical Sciences, Poznań 60-781, Poland.
| | - Agnieszka Adamek
- Department of Infectious Diseases, Hepatology and Acquired Immunodeficiencies, University of Medical Sciences, Poznań 61-285, Poland.
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25
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Castro PR, Barbosa AS, Pereira JM, Ranfley H, Felipetto M, Gonçalves CAX, Paiva IR, Berg BB, Barcelos LS. Cellular and Molecular Heterogeneity Associated with Vessel Formation Processes. BIOMED RESEARCH INTERNATIONAL 2018; 2018:6740408. [PMID: 30406137 PMCID: PMC6199857 DOI: 10.1155/2018/6740408] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Accepted: 09/06/2018] [Indexed: 12/11/2022]
Abstract
The microvasculature heterogeneity is a complex subject in vascular biology. The difficulty of building a dynamic and interactive view among the microenvironments, the cellular and molecular heterogeneities, and the basic aspects of the vessel formation processes make the available knowledge largely fragmented. The neovascularisation processes, termed vasculogenesis, angiogenesis, arteriogenesis, and lymphangiogenesis, are important to the formation and proper functioning of organs and tissues both in the embryo and the postnatal period. These processes are intrinsically related to microvascular cells, such as endothelial and mural cells. These cells are able to adjust their activities in response to the metabolic and physiological requirements of the tissues, by displaying a broad plasticity that results in a significant cellular and molecular heterogeneity. In this review, we intend to approach the microvasculature heterogeneity in an integrated view considering the diversity of neovascularisation processes and the cellular and molecular heterogeneity that contribute to microcirculatory homeostasis. For that, we will cover their interactions in the different blood-organ barriers and discuss how they cooperate in an integrated regulatory network that is controlled by specific molecular signatures.
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Affiliation(s)
- Pollyana Ribeiro Castro
- Department of Physiology and Biophysics, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Brazil
| | - Alan Sales Barbosa
- Department of Physiology and Biophysics, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Brazil
| | - Jousie Michel Pereira
- Department of Physiology and Biophysics, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Brazil
| | - Hedden Ranfley
- Department of Physiology and Biophysics, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Brazil
| | - Mariane Felipetto
- Department of Physiology and Biophysics, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Brazil
| | - Carlos Alberto Xavier Gonçalves
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Brazil
| | - Isabela Ribeiro Paiva
- Department of Pharmacology, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Brazil
| | - Bárbara Betônico Berg
- Department of Pharmacology, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Brazil
| | - Luciola Silva Barcelos
- Department of Physiology and Biophysics, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), Brazil
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26
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Shan R, Wang B, Wang A, Sun Z, Dong F, Liu J, Sun H. Endoglin-targeted contrast-enhanced ultrasound imaging in hepatoblastoma xenografts. Oncol Lett 2018; 16:3784-3790. [PMID: 30127989 PMCID: PMC6096263 DOI: 10.3892/ol.2018.9067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 06/04/2018] [Indexed: 12/11/2022] Open
Abstract
Angiogenesis is required for the growth of hepatoblastoma (HB). In the present study, an ultrasonic contrast agent, microbubbles (MB), was combined with an endoglin antibody, and then injected into nude mice with HB. This was conducted to detect specific binding to microvessels via non-linear harmonic imaging for tumor angiogenesis assessment. In addition, endoglin expression in experimental animals was measured using western blotting, reverse transcription-quantitative polymerase chain reaction and immunohistochemistry. In vitro, human umbilical vein endothelial cells (HUVECs) were co-cultured with conditioned media collected from HepG2 cells. Western blotting and reverse transcription-quantitative PCR was performed to detect the changes of endoglin expression. In targeted ultrasound imaging, it was determined that the differential targeted enhancement of MBendoglin was significantly higher than that of MBisotype. Over expression of endoglin was identified in the tumor of experimental nude mice; however, it was not present in the liver of the mice. Endoglin expression in HUVECs was significantly increased by co-culture with the conditioned media of HepG2 cells; therefore, the results suggest that endoglin is upregulated in angiogenic vessels in the HepG2 cell xenografts in nude mice. Thus, endoglin-targeted ultrasound imaging is presented as a potential approach for the diagnosis of liver carcinoma.
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Affiliation(s)
- Rong Shan
- Department of Ultrasonography, Jinan Infectious Disease Hospital, Jinan, Shandong 250021, P.R. China.,Department of Ultrasound, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Bei Wang
- Department of Ultrasonography, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Aiguang Wang
- Department of Oncology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Zongguo Sun
- The Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Fengyun Dong
- The Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Ju Liu
- The Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Hongjun Sun
- Department of Ultrasonography, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
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27
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Paauwe M, Schoonderwoerd MJA, Helderman RFCP, Harryvan TJ, Groenewoud A, van Pelt GW, Bor R, Hemmer DM, Versteeg HH, Snaar-Jagalska BE, Theuer CP, Hardwick JCH, Sier CFM, Ten Dijke P, Hawinkels LJAC. Endoglin Expression on Cancer-Associated Fibroblasts Regulates Invasion and Stimulates Colorectal Cancer Metastasis. Clin Cancer Res 2018; 24:6331-6344. [PMID: 29945992 DOI: 10.1158/1078-0432.ccr-18-0329] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 05/23/2018] [Accepted: 06/18/2018] [Indexed: 11/16/2022]
Abstract
PURPOSE Cancer-associated fibroblasts (CAF) are a major component of the colorectal cancer tumor microenvironment. CAFs play an important role in tumor progression and metastasis, partly through TGF-β signaling pathway. We investigated whether the TGF-β family coreceptor endoglin is involved in CAF-mediated invasion and metastasis. EXPERIMENTAL DESIGN CAF-specific endoglin expression was studied in colorectal cancer resection specimens using IHC and related to metastases-free survival. Endoglin-mediated invasion was assessed in vitro by transwell invasion, using primary colorectal cancer-derived CAFs. Effects of CAF-specific endoglin expression on tumor cell invasion were investigated in a colorectal cancer zebrafish model, whereas liver metastases were assessed in a mouse model. RESULTS CAFs specifically at invasive borders of colorectal cancer express endoglin and increased expression intensity correlated with increased disease stage. Endoglin-expressing CAFs were also detected in lymph node and liver metastases, suggesting a role in colorectal cancer metastasis formation. In stage II colorectal cancer, CAF-specific endoglin expression at invasive borders correlated with poor metastasis-free survival. In vitro experiments revealed that endoglin is indispensable for bone morphogenetic protein (BMP)-9-induced signaling and CAF survival. Targeting endoglin using the neutralizing antibody TRC105 inhibited CAF invasion in vitro. In zebrafish, endoglin-expressing fibroblasts enhanced colorectal tumor cell infiltration into the liver and decreased survival. Finally, CAF-specific endoglin targeting with TRC105 decreased metastatic spread of colorectal cancer cells to the mouse liver. CONCLUSIONS Endoglin-expressing CAFs contribute to colorectal cancer progression and metastasis. TRC105 treatment inhibits CAF invasion and tumor metastasis, indicating an additional target beyond the angiogenic endothelium, possibly contributing to beneficial effects reported during clinical evaluations.See related commentary by Becker and LeBleu, p. 6110.
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Affiliation(s)
- Madelon Paauwe
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands.,Department of Gastroenterology-Hepatology, Leiden University Medical Center, Leiden, the Netherlands.,Department of Thrombosis & Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - Mark J A Schoonderwoerd
- Department of Gastroenterology-Hepatology, Leiden University Medical Center, Leiden, the Netherlands
| | - Roxan F C P Helderman
- Department of Gastroenterology-Hepatology, Leiden University Medical Center, Leiden, the Netherlands
| | - Tom J Harryvan
- Department of Gastroenterology-Hepatology, Leiden University Medical Center, Leiden, the Netherlands
| | - Arwin Groenewoud
- Institute of Biology, Leiden University, Leiden, the Netherlands
| | - Gabi W van Pelt
- Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Rosalie Bor
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands.,Department of Gastroenterology-Hepatology, Leiden University Medical Center, Leiden, the Netherlands
| | - Danielle M Hemmer
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands
| | - Henri H Versteeg
- Department of Thrombosis & Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | | | | | - James C H Hardwick
- Department of Gastroenterology-Hepatology, Leiden University Medical Center, Leiden, the Netherlands
| | - Cornelis F M Sier
- Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Peter Ten Dijke
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands.,Oncode Institute, the Netherlands
| | - Lukas J A C Hawinkels
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands. .,Department of Gastroenterology-Hepatology, Leiden University Medical Center, Leiden, the Netherlands
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28
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Singh P, Jenkins LM, Horst B, Alers V, Pradhan S, Kaur P, Srivastava T, Hempel N, Győrffy B, Broude EV, Lee NY, Mythreye K. Inhibin Is a Novel Paracrine Factor for Tumor Angiogenesis and Metastasis. Cancer Res 2018; 78:2978-2989. [PMID: 29535220 PMCID: PMC6510404 DOI: 10.1158/0008-5472.can-17-2316] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 01/03/2018] [Accepted: 03/09/2018] [Indexed: 01/21/2023]
Abstract
Inhibin is a heterodimeric TGFβ family ligand that is expressed in many cancers and is a selective biomarker for ovarian cancers; however, its tumor-specific functions remain unknown. Here, we demonstrate that the α subunit of inhibin (INHA), which is critical for the functionality of dimeric inhibin A/B, correlates with microvessel density in human ovarian tissues and is predictive of poor clinical outcomes in multiple cancers. We demonstrate that inhibin-regulated angiogenesis is necessary for metastasis. Although inhibin had no direct impact on tumor cell signaling, both tumor cell-derived and recombinant inhibin elicit a strong paracrine response from endothelial cells by triggering SMAD1/5 activation and angiogenesis in vitro and in vivo Inhibin-induced angiogenesis was abrogated via anti-inhibin α antibodies. The endothelial-specific TGFβ receptor complex comprising ALK1 and endoglin was a crucial mediator of inhibin signaling, offering a molecular mechanism for inhibin-mediated angiogenesis. These results are the first to define a role for inhibin in tumor metastasis and vascularization and offer an antibody-based approach for targeting inhibin therapeutically.Significance: Inhibin is a predictor of poor patient survival in multiple cancers and is a potential target for antiangiogenic therapies. Cancer Res; 78(11); 2978-89. ©2018 AACR.
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Affiliation(s)
- Priyanka Singh
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina
| | - Laura M Jenkins
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina
| | - Ben Horst
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina
| | - Victoria Alers
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina
| | - Shrikant Pradhan
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina
| | - Prabhjot Kaur
- Department of Genetics, University of Delhi, South Campus, India
| | | | - Nadine Hempel
- Department of Pharmacology, Penn State University College of Medicine, Hershey, Pennsylvania
| | - Balázs Győrffy
- MTA TTK Lendület Cancer Biomarker Research Group, Institute of Enzymology, and Semmelweis University 2nd Department of Pediatrics, Budapest, Hungary
| | - Eugenia V Broude
- Department of Drug Discovery and Biomedical Sciences, School of Pharmacy, Ohio State University, Columbus, Ohio
| | - Nam Y Lee
- Division of Pharmacology, College of Pharmacy, Ohio State University, Columbus, Ohio
| | - Karthikeyan Mythreye
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina.
- Department of Drug Discovery and Biomedical Sciences, School of Pharmacy, Ohio State University, Columbus, Ohio
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29
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Browne S, Jha AK, Ameri K, Marcus SG, Yeghiazarians Y, Healy KE. TGF-β1/CD105 signaling controls vascular network formation within growth factor sequestering hyaluronic acid hydrogels. PLoS One 2018; 13:e0194679. [PMID: 29566045 PMCID: PMC5864059 DOI: 10.1371/journal.pone.0194679] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 03/07/2018] [Indexed: 12/17/2022] Open
Abstract
Cell-based strategies for the treatment of ischemic diseases are at the forefront of tissue engineering and regenerative medicine. Cell therapies purportedly can play a key role in the neovascularization of ischemic tissue; however, low survival and poor cell engraftment with the host vasculature following implantation limits their potential to treat ischemic diseases. To overcome these limitations, we previously developed a growth factor sequestering hyaluronic acid (HyA)-based hydrogel that enhanced transplanted mouse cardiosphere-derived cell survival and formation of vasculature that anastomosed with host vessels. In this work, we examined the mechanism by which HyA hydrogels presenting transforming growth factor beta-1 (TGF-β1) promoted proliferation of more clinically relevant human cardiosphere-derived cells (hCDC), and their formation of vascular-like networks in vitro. We observed hCDC proliferation and enhanced formation of vascular-like networks occurred in the presence of TGF-β1. Furthermore, production of nitric oxide (NO), VEGF, and a host of angiogenic factors were increased in the presence of TGF-β1. This response was dependent on the co-activity of CD105 (Endoglin) with the TGF-βR2 receptor, demonstrating its role in the process of angiogenic differentiation and vascular organization of hCDC. These results demonstrated that hCDC form vascular-like networks in vitro, and that the induction of vascular networks by hCDC within growth factor sequestering HyA hydrogels was mediated by TGF-β1/CD105 signaling.
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Affiliation(s)
- Shane Browne
- Departments of Bioengineering and Materials Science and Engineering, University of California, Berkeley, CA, United States of America
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway, Galway, Ireland
| | - Amit K. Jha
- Departments of Bioengineering and Materials Science and Engineering, University of California, Berkeley, CA, United States of America
| | - Kurosh Ameri
- Department of Medicine, University of California, San Francisco, CA, United States of America
| | - Sivan G. Marcus
- Departments of Bioengineering and Materials Science and Engineering, University of California, Berkeley, CA, United States of America
| | - Yerem Yeghiazarians
- Department of Medicine, University of California, San Francisco, CA, United States of America
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, United States of America
- Cardiovascular Research Institute, University of California, San Francisco, CA, United States of America
| | - Kevin E. Healy
- Departments of Bioengineering and Materials Science and Engineering, University of California, Berkeley, CA, United States of America
- * E-mail:
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30
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Goumans MJ, Zwijsen A, Ten Dijke P, Bailly S. Bone Morphogenetic Proteins in Vascular Homeostasis and Disease. Cold Spring Harb Perspect Biol 2018; 10:cshperspect.a031989. [PMID: 28348038 DOI: 10.1101/cshperspect.a031989] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
It is well established that control of vascular morphogenesis and homeostasis is regulated by vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF), Delta-like 4 (Dll4), angiopoietin, and ephrin signaling. It has become clear that signaling by bone morphogenetic proteins (BMPs), which have a long history of studies in bone and early heart development, are also essential for regulating vascular function. Indeed, mutations that cause deregulated BMP signaling are linked to two human vascular diseases, hereditary hemorrhagic telangiectasia and pulmonary arterial hypertension. These observations are corroborated by data obtained with vascular cells in cell culture and in mouse models. BMPs are required for normal endothelial cell differentiation and for venous/arterial and lymphatic specification. In adult life, BMP signaling orchestrates neo-angiogenesis as well as vascular inflammation, remodeling, and calcification responses to shear and oxidative stress. This review emphasizes the pivotal role of BMPs in the vascular system, based on studies of mouse models and human vascular disorders.
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Affiliation(s)
- Marie-José Goumans
- Department of Molecular Cell Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - An Zwijsen
- VIB Center for the Biology of Disease, 3000 Leuven, Belgium.,KU Leuven Department of Human Genetics, 3000 Leuven, Belgium
| | - Peter Ten Dijke
- Department of Molecular Cell Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands.,Cancer Genomics Centre Netherlands, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Sabine Bailly
- Institut National de la Santé et de la Recherche Mécale (INSERM), U1036, 38000 Grenoble, France.,Laboratoire Biologie du Cancer et de l'Infection, Commissariat à l'Énergie Atomique et aux Energies Alternatives, Biosciences and Biotechnology Institute of Grenoble, 38000 Grenoble, France.,University of Grenoble Alpes, 38000 Grenoble, France
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31
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Tian H, Huang JJ, Golzio C, Gao X, Hector-Greene M, Katsanis N, Blobe GC. Endoglin interacts with VEGFR2 to promote angiogenesis. FASEB J 2018; 32:2934-2949. [PMID: 29401587 DOI: 10.1096/fj.201700867rr] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Endoglin, a TGF-β coreceptor predominantly expressed in endothelial cells, plays an important role in vascular development and tumor-associated angiogenesis. However, the mechanism by which endoglin regulates angiogenesis, especially during tip cell formation, remains largely unknown. In this study, we report that endoglin promoted VEGF-induced tip cell formation. Mechanistically, endoglin interacted with VEGF receptor (VEGFR)-2 in a VEGF-dependent manner, which sustained VEGFR2 on the cell surface and prevented its degradation. Endoglin mutants deficient in the ability to interact with VEGFR2 failed to sustain VEGFR2 on the cell surface and to promote VEGF-induced tip cell formation. Further, an endoglin-targeting monoclonal antibody (mAb), TRC105, cooperated with a VEGF-A targeting mAb, bevacizumab, to inhibit VEGF signaling and tip cell formation in vitro and to inhibit tumor growth, metastasis, and tumor-associated angiogenesis in a murine tumor model. This study demonstrate a novel mechanism by which endoglin initiates and regulates VEGF-driven angiogenesis while providing a rationale for combining anti-VEGF and anti-endoglin therapy in patients with cancer.-Tian, H., Huang, J. J., Golzio, C., Gao, X., Hector-Greene, M., Katsanis, N., Blobe, G. C. Endoglin interacts with VEGFR2 to promote angiogenesis.
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Affiliation(s)
- Hongyu Tian
- Division of Medical Oncology, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Jennifer J Huang
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina, USA
| | - Christelle Golzio
- Center for Human Disease Modeling, Duke University Medical Center, Durham, North Carolina, USA
| | - Xia Gao
- Department of Cell Biology, Duke University School of Medicine, Durham, North Carolina, USA
| | - Melissa Hector-Greene
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina, USA
| | - Nicholas Katsanis
- Center for Human Disease Modeling, Duke University Medical Center, Durham, North Carolina, USA
| | - Gerard C Blobe
- Division of Medical Oncology, Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA.,Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina, USA
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Ventura E, Weller M, Macnair W, Eschbach K, Beisel C, Cordazzo C, Claassen M, Zardi L, Burghardt I. TGF-β induces oncofetal fibronectin that, in turn, modulates TGF-β superfamily signaling in endothelial cells. J Cell Sci 2018; 131:jcs.209619. [PMID: 29158223 DOI: 10.1242/jcs.209619] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 11/14/2017] [Indexed: 12/31/2022] Open
Abstract
Gene splicing profiles are frequently altered in cancer, and the splice variants of fibronectin (FN) that contain the extra-domains A (EDA) or B (EDB), referred to as EDA+FN or EDB+FN, are highly upregulated in tumor vasculature. Transforming growth factor β (TGF-β) signaling has been attributed a pivotal role in glioblastoma, with TGF-β promoting angiogenesis and vessel remodeling. By using immunohistochemistry staining, we observed that the oncofetal FN isoforms EDA+FN and EDB+FN are expressed in glioblastoma vasculature. Ex vivo single-cell gene expression profiling of tumors by using CD31 and α-smooth muscle actin (αSMA) as markers for endothelial cells, and pericytes and vascular smooth muscle cells (VSMCs), respectively, confirmed the predominant expression of FN, EDA+FN and EDB+FN in the vascular compartment of glioblastoma. Specifically, within the CD31-positive cell population, we identified a positive correlation between the expression of EDA+FN and EDB+FN, and of molecules associated with TGF-β signaling. Further, TGF-β induced EDA+FN and EDB+FN in human cerebral microvascular endothelial cells and glioblastoma-derived endothelial cells in a SMAD3- and SMAD4-dependent manner. In turn, we found that FN modulated TGF-β superfamily signaling in endothelial cells via the EDA and EDB, pointing towards a bidirectional influence of oncofetal FN and TGF-β superfamily signaling.
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Affiliation(s)
- Elisa Ventura
- Laboratory of Molecular Neuro-Oncology, Department of Neurology, University Hospital and University of Zurich, Frauenklinikstrasse 26, 8091 Zurich, Switzerland
| | - Michael Weller
- Laboratory of Molecular Neuro-Oncology, Department of Neurology, University Hospital and University of Zurich, Frauenklinikstrasse 26, 8091 Zurich, Switzerland
| | - Will Macnair
- Institute of Molecular Systems Biology, ETH Zurich, 8093 Zurich, Switzerland
| | - Katja Eschbach
- Department of Biosystems Science and Engineering, ETH Zürich, 4058 Basel, Switzerland
| | - Christian Beisel
- Department of Biosystems Science and Engineering, ETH Zürich, 4058 Basel, Switzerland
| | - Cinzia Cordazzo
- Sirius-biotech, c/o Advanced Biotechnology Center, 16132 Genoa, Italy
| | - Manfred Claassen
- Institute of Molecular Systems Biology, ETH Zurich, 8093 Zurich, Switzerland
| | - Luciano Zardi
- Sirius-biotech, c/o Advanced Biotechnology Center, 16132 Genoa, Italy
| | - Isabel Burghardt
- Laboratory of Molecular Neuro-Oncology, Department of Neurology, University Hospital and University of Zurich, Frauenklinikstrasse 26, 8091 Zurich, Switzerland
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Nickel J, Ten Dijke P, Mueller TD. TGF-β family co-receptor function and signaling. Acta Biochim Biophys Sin (Shanghai) 2018; 50:12-36. [PMID: 29293886 DOI: 10.1093/abbs/gmx126] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 11/08/2017] [Indexed: 01/04/2023] Open
Abstract
Transforming growth factor-β (TGF-β) family members, which include TGF-βs, activins and bone morphogenetic proteins, are pleiotropic cytokines that elicit cell type-specific effects in a highly context-dependent manner in many different tissues. These secreted protein ligands signal via single-transmembrane Type I and Type II serine/threonine kinase receptors and intracellular SMAD transcription factors. Deregulation in signaling has been implicated in a broad array of diseases, and implicate the need for intricate fine tuning in cellular signaling responses. One important emerging mechanism by which TGF-β family receptor signaling intensity, duration, specificity and diversity are regulated and/or mediated is through cell surface co-receptors. Here, we provide an overview of the co-receptors that have been identified for TGF-β family members. While some appear to be specific to TGF-β family members, others are shared with other pathways and provide possible ways for signal integration. This review focuses on novel functions of TGF-β family co-receptors, which continue to be discovered.
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Affiliation(s)
- Joachim Nickel
- Universitätsklinikum Würzburg, Lehrstuhl für Tissue Engineering und Regenerative Medizin und Fraunhofer Institut für Silicatforschung (ISC), Translationszentrum "Regenerative Therapien", Röntgenring 11, D-97070 Würzburg, Germany
| | - Peter Ten Dijke
- Department of Molecular and Cell Biology and Cancer Genomics Centre Netherlands, Leiden University Medical Center, Einthovenweg 20, 2300 RC Leiden, The Netherlands
| | - Thomas D Mueller
- Lehrstuhl für molekulare Pflanzenphysiologie und Biophysik, Julius-von-Sachs Institut für Biowissenschaften, Universität Würzburg, Julius-von-Sachs-Platz 2, D-97082 Würzburg, Germany
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Hepatitis C Virus Core Protein Modulates Endoglin (CD105) Signaling Pathway for Liver Pathogenesis. J Virol 2017; 91:JVI.01235-17. [PMID: 28794048 DOI: 10.1128/jvi.01235-17] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 08/06/2017] [Indexed: 12/11/2022] Open
Abstract
Endoglin is part of the TGF-β receptor complex and has a crucial role in fibrogenesis and angiogenesis. It is also an important protein for tumor growth, survival, and cancer cell metastasis. In a previous study, we have shown that hepatitis C virus (HCV) infection induces epithelial-mesenchymal transition (EMT) state and cancer stem-like cell (CSC) properties in human hepatocytes. Our array data suggested that endoglin (CD105) mRNA is significantly upregulated in HCV-associated CSCs. In this study, we have observed increased endoglin expression on the cell surface of an HCV core-expressing hepatocellular carcinoma (HepG2) cell line or immortalized human hepatocytes (IHH) and activation of its downstream signaling molecules. The status of phospho-SMAD1/5 and the expression of inhibitor of DNA binding protein 1 (ID1) were upregulated in HCV-infected cells or viral core gene-transfected cells. Additionally, we observed upregulation of endoglin/ID1 mRNA expression in chronic HCV patient liver biopsy samples. CSC generation by HCV core protein was dependent on the endoglin signaling pathway using activin receptor-like kinase 1 (ALK1) Fc blocking peptide and endoglin small interfering RNA (siRNA). Further, follow-up from in vitro analysis suggested that the antiapoptosis Bcl2 protein, proliferation-related cyclin D1 protein, and CSC-associated Hes1, Notch1, Nanog, and Sox2 proteins are enhanced during infection or ectopic expression of HCV core protein.IMPORTANCE Endoglin plays a crucial role in fibrogenesis and angiogenesis and is an important protein for tumor growth, survival, and cancer cell metastasis. Endoglin enhances ALK1-SMAD1/5 signaling in different cell types, leading to increased proliferation and migration responses. We have observed endoglin expression on the HCV core-expressing cell surface of human hepatocyte origin and activation of phospho-SMAD1/5 and ID1 downstream signaling molecules. ID1 protein plays a role in CSC properties, and we found that this pathway is important for antiapoptotic and cell proliferation signaling. Blocking of endoglin-ALK1-SMAD1/5 might be a good candidate for therapy for liver cancer stem cells together with liver cirrhosis.
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Yan Q, Ahn SH, Medie FM, Sharma-Kuinkel BK, Park LP, Scott WK, Deshmukh H, Tsalik EL, Cyr DD, Woods CW, Yu CHA, Adams C, Qi R, Hansen B, Fowler VG. Candidate genes on murine chromosome 8 are associated with susceptibility to Staphylococcus aureus infection in mice and are involved with Staphylococcus aureus septicemia in humans. PLoS One 2017; 12:e0179033. [PMID: 28594911 PMCID: PMC5464679 DOI: 10.1371/journal.pone.0179033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 05/23/2017] [Indexed: 02/06/2023] Open
Abstract
We previously showed that chromosome 8 of A/J mice was associated with susceptibility to S. aureus infection. However, the specific genes responsible for this susceptibility are unknown. Chromosome substitution strain 8 (CSS8) mice, which have chromosome 8 from A/J but an otherwise C57BL/6J genome, were used to identify the genetic determinants of susceptibility to S. aureus on chromosome 8. Quantitative trait loci (QTL) mapping of S. aureus-infected N2 backcross mice (F1 [C8A] × C57BL/6J) identified a locus 83180780–88103009 (GRCm38/mm10) on A/J chromosome 8 that was linked to S. aureus susceptibility. All genes on the QTL (n~ 102) were further analyzed by three different strategies: 1) different expression in susceptible (A/J) and resistant (C57BL/6J) mice only in response to S. aureus, 2) consistently different expression in both uninfected and infected states between the two strains, and 3) damaging non-synonymous SNPs in either strain. Eleven candidate genes from the QTL region were significantly differently expressed in patients with S. aureus infection vs healthy human subjects. Four of these 11 genes also exhibited significantly different expression in S. aureus-challenged human neutrophils: Ier2, Crif1, Cd97 and Lyl1. CD97 ligand binding was evaluated within peritoneal neutrophils from A/J and C57BL/6J. CD97 from A/J had stronger CD55 but weaker integrin α5β1 ligand binding as compared with C57BL/6J. Because CD55/CD97 binding regulates immune cell activation and cytokine production, and integrin α5β1 is a membrane receptor for fibronectin, which is also bound by S. aureus, strain-specific differences could contribute to susceptibility to S. aureus. Down-regulation of Crif1 with siRNA was associated with increased host cell apoptosis among both naïve and S. aureus-infected bone marrow-derived macrophages. Specific genes in A/J chromosome 8, including Cd97 and Crif1, may play important roles in host defense against S. aureus.
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Affiliation(s)
- Qin Yan
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Sun Hee Ahn
- Department of Biochemistry School of Dentistry, Chonnam National University, Bukgu, Gwangju, Korea
| | - Felix Mba Medie
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Batu K. Sharma-Kuinkel
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Lawrence P. Park
- Duke Global Health Institute, Duke University, Durham, North Carolina, United States of America
| | - William K. Scott
- Dr. John T. Macdonald Foundation Department of Human Genetics and John P. Hussman Institute for Human Genomics, University of Miami, Miami, Florida, United States of America
| | - Hitesh Deshmukh
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Ephraim L. Tsalik
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
- Emergency Medicine Service, Durham Veteran’s Affairs Medical Center, Durham, North Carolina, United States of America
- Duke Clinical Research Institute, Durham, North Carolina, United States of America
| | - Derek D. Cyr
- Duke Clinical Research Institute, Durham, North Carolina, United States of America
| | - Christopher W. Woods
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Clinical Research Institute, Durham, North Carolina, United States of America
- Section on Infectious Diseases, Durham Veteran’s Affairs Medical Center, Durham, North Carolina, United States of America
| | - Chen-Hsin Albert Yu
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Carlton Adams
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Robert Qi
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Brenda Hansen
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Vance G. Fowler
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Clinical Research Institute, Durham, North Carolina, United States of America
- * E-mail:
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36
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Inhibition of extracellular matrix mediated TGF-β signalling suppresses endometrial cancer metastasis. Oncotarget 2017; 8:71400-71417. [PMID: 29069715 PMCID: PMC5641058 DOI: 10.18632/oncotarget.18069] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 05/07/2017] [Indexed: 01/06/2023] Open
Abstract
Although aggressive invasion and distant metastases are an important cause of morbidity and mortality in patients with endometrial cancer (EC), the requisite events determining this propensity are currently unknown. Using organotypic three-dimensional culture of endometrial cancer cell lines, we demonstrated anti-correlated TGF-β signalling gene expression patterns that arise among extracellular matrix (ECM)-attached cells. TGF-β pathway seemed to be active in EC cells forming non-glandular colonies in 3D-matrix but weaker in glandular colonies. Functionally we found that out of several ECM proteins, fibronectin relatively promotes Smad phosphorylation suggesting a potential role in regulating TGF-β signalling in non-glandular colonies. Importantly, alteration of TGF-β pathway induced EMT and MET in both type of colonies through slug protein. The results exemplify a crucial role of TGF-β pathway during EC metastasis in human patients and inhibition of the pathway in a murine model impaired tumour cell invasion and metastasis depicting an attractive target for therapeutic intervention of malignant tumour progression. These findings provide key insights into the role of ECM-derived TGF-β signalling to promote endometrial cancer metastasis and offer an avenue for therapeutic targeting of microenvironment derived signals along with tumour cells.
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Tian H, Ketova T, Hardy D, Xu X, Gao X, Zijlstra A, Blobe GC. Endoglin Mediates Vascular Maturation by Promoting Vascular Smooth Muscle Cell Migration and Spreading. Arterioscler Thromb Vasc Biol 2017; 37:1115-1126. [PMID: 28450296 PMCID: PMC5444426 DOI: 10.1161/atvbaha.116.308859] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 04/19/2017] [Indexed: 11/16/2022]
Abstract
Supplemental Digital Content is available in the text. Objective— Endoglin, a transforming growth factor-β superfamily coreceptor, is predominantly expressed in endothelial cells and has essential roles in vascular development. However, whether endoglin is also expressed in vascular smooth muscle cells (VSMCs), especially in vivo, remains controversial. Furthermore, the roles of endoglin in VSMC biology remain largely unknown. Our objective was to examine the expression and determine the function of endoglin in VSMCs during angiogenesis. Approach and Results— Here, we determine that endoglin is robustly expressed in VSMCs. Using CRISPR/CAS9 knockout and short hairpin RNA knockdown in the VSMC/endothelial coculture model system, we determine that endoglin in VSMCs, but not in endothelial cells, promotes VSMCs recruitment by the endothelial cells both in vitro and in vivo. Using an unbiased bioinformatics analysis of RNA sequencing data and further study, we determine that, mechanistically, endoglin mediates VSMC recruitment by promoting VSMC migration and spreading on endothelial cells via increasing integrin/FAK pathway signaling, whereas endoglin has minimal effects on VSMC adhesion to endothelial cells. In addition, we further determine that loss of endoglin in VSMCs inhibits VSMC recruitment in vivo. Conclusions— These studies demonstrate that endoglin has an important role in VSMC recruitment and blood vessel maturation during angiogenesis and also provide novel insights into how discordant endoglin function in endothelial and VSMCs may regulate vascular maturation and angiogenesis.
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Affiliation(s)
- Hongyu Tian
- From the Division of Medical Oncology, Department of Medicine (H.T., D.H., G.C.B.) and Department of Pharmacology and Cancer Biology (G.C.B.), Duke University Medical Center, Durham, NC; Department of Pathology, Microbiology, and Immunology (T.K., A.Z.) and Department of Cancer Biology (A.Z.), Vanderbilt University, Nashville, TN; Integrative Bioinformatics, National Institute of Environmental Health Sciences, Research Triangle Park, NC (X.X.); Department of Cell Biology, Duke University School of Medicine, Durham, NC (X.G.); and Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN (A.Z.);
| | - Tatiana Ketova
- From the Division of Medical Oncology, Department of Medicine (H.T., D.H., G.C.B.) and Department of Pharmacology and Cancer Biology (G.C.B.), Duke University Medical Center, Durham, NC; Department of Pathology, Microbiology, and Immunology (T.K., A.Z.) and Department of Cancer Biology (A.Z.), Vanderbilt University, Nashville, TN; Integrative Bioinformatics, National Institute of Environmental Health Sciences, Research Triangle Park, NC (X.X.); Department of Cell Biology, Duke University School of Medicine, Durham, NC (X.G.); and Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN (A.Z.)
| | - Duriel Hardy
- From the Division of Medical Oncology, Department of Medicine (H.T., D.H., G.C.B.) and Department of Pharmacology and Cancer Biology (G.C.B.), Duke University Medical Center, Durham, NC; Department of Pathology, Microbiology, and Immunology (T.K., A.Z.) and Department of Cancer Biology (A.Z.), Vanderbilt University, Nashville, TN; Integrative Bioinformatics, National Institute of Environmental Health Sciences, Research Triangle Park, NC (X.X.); Department of Cell Biology, Duke University School of Medicine, Durham, NC (X.G.); and Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN (A.Z.)
| | - Xiaojiang Xu
- From the Division of Medical Oncology, Department of Medicine (H.T., D.H., G.C.B.) and Department of Pharmacology and Cancer Biology (G.C.B.), Duke University Medical Center, Durham, NC; Department of Pathology, Microbiology, and Immunology (T.K., A.Z.) and Department of Cancer Biology (A.Z.), Vanderbilt University, Nashville, TN; Integrative Bioinformatics, National Institute of Environmental Health Sciences, Research Triangle Park, NC (X.X.); Department of Cell Biology, Duke University School of Medicine, Durham, NC (X.G.); and Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN (A.Z.)
| | - Xia Gao
- From the Division of Medical Oncology, Department of Medicine (H.T., D.H., G.C.B.) and Department of Pharmacology and Cancer Biology (G.C.B.), Duke University Medical Center, Durham, NC; Department of Pathology, Microbiology, and Immunology (T.K., A.Z.) and Department of Cancer Biology (A.Z.), Vanderbilt University, Nashville, TN; Integrative Bioinformatics, National Institute of Environmental Health Sciences, Research Triangle Park, NC (X.X.); Department of Cell Biology, Duke University School of Medicine, Durham, NC (X.G.); and Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN (A.Z.)
| | - Andries Zijlstra
- From the Division of Medical Oncology, Department of Medicine (H.T., D.H., G.C.B.) and Department of Pharmacology and Cancer Biology (G.C.B.), Duke University Medical Center, Durham, NC; Department of Pathology, Microbiology, and Immunology (T.K., A.Z.) and Department of Cancer Biology (A.Z.), Vanderbilt University, Nashville, TN; Integrative Bioinformatics, National Institute of Environmental Health Sciences, Research Triangle Park, NC (X.X.); Department of Cell Biology, Duke University School of Medicine, Durham, NC (X.G.); and Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN (A.Z.)
| | - Gerard C Blobe
- From the Division of Medical Oncology, Department of Medicine (H.T., D.H., G.C.B.) and Department of Pharmacology and Cancer Biology (G.C.B.), Duke University Medical Center, Durham, NC; Department of Pathology, Microbiology, and Immunology (T.K., A.Z.) and Department of Cancer Biology (A.Z.), Vanderbilt University, Nashville, TN; Integrative Bioinformatics, National Institute of Environmental Health Sciences, Research Triangle Park, NC (X.X.); Department of Cell Biology, Duke University School of Medicine, Durham, NC (X.G.); and Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN (A.Z.);
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Núñez-Gómez E, Pericacho M, Ollauri-Ibáñez C, Bernabéu C, López-Novoa JM. The role of endoglin in post-ischemic revascularization. Angiogenesis 2016; 20:1-24. [PMID: 27943030 DOI: 10.1007/s10456-016-9535-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 11/29/2016] [Indexed: 12/12/2022]
Abstract
Following arterial occlusion, blood vessels respond by forming a new network of functional capillaries (angiogenesis), by reorganizing preexisting capillaries through the recruitment of smooth muscle cells to generate new arteries (arteriogenesis) and by growing and remodeling preexisting collateral arterioles into physiologically relevant arteries (collateral development). All these processes result in the recovery of organ perfusion. The importance of endoglin in post-occlusion reperfusion is sustained by several observations: (1) endoglin expression is increased in vessels showing active angiogenesis/remodeling; (2) genetic endoglin haploinsufficiency in humans causes deficient angiogenesis; and (3) the reduction of endoglin expression by gene disruption or the administration of endoglin-neutralizing antibodies reduces angiogenesis and revascularization. However, the precise role of endoglin in the several processes associated with revascularization has not been completely elucidated and, in some cases, the function ascribed to endoglin by different authors is controversial. The purpose of this review is to organize in a critical way the information available for the role of endoglin in several phenomena (angiogenesis, arteriogenesis and collateral development) associated with post-ischemic revascularization.
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Affiliation(s)
- Elena Núñez-Gómez
- Renal and Cardiovascular Research Unit, Department of Physiology and Pharmacology, University of Salamanca, Salamanca, Spain.,Biomedical Research Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Miguel Pericacho
- Renal and Cardiovascular Research Unit, Department of Physiology and Pharmacology, University of Salamanca, Salamanca, Spain.,Biomedical Research Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Claudia Ollauri-Ibáñez
- Renal and Cardiovascular Research Unit, Department of Physiology and Pharmacology, University of Salamanca, Salamanca, Spain.,Biomedical Research Institute of Salamanca (IBSAL), Salamanca, Spain
| | - Carmelo Bernabéu
- Centro de Investigaciones Biológicas, Spanish National Research Council (CIB, CSIC), Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - José M López-Novoa
- Renal and Cardiovascular Research Unit, Department of Physiology and Pharmacology, University of Salamanca, Salamanca, Spain. .,Biomedical Research Institute of Salamanca (IBSAL), Salamanca, Spain.
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Modulation of BMP signalling by integrins. Biochem Soc Trans 2016; 44:1465-1473. [DOI: 10.1042/bst20160111] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 07/11/2016] [Accepted: 07/15/2016] [Indexed: 12/17/2022]
Abstract
The bone morphogenetic protein (BMP) pathway is a major conserved signalling pathway with diverse roles in development and homeostasis. Given that cells exist in three-dimensional environments, one important area is to understand how the BMP pathway operates within such complex cellular environments. The extracellular matrix contains information regarding tissue architecture and its mechanical properties that is transmitted to the cell via integrin receptors. In this review, I describe various examples of modulation of the BMP pathway by integrins. In the case of the Drosophila embryo and some cell line-based studies, integrins have been found to enhance BMP responses through different mechanisms, such as enhancement of BMP ligand–receptor binding and effects on Smad phosphorylation or stability. In these contexts, BMP-dependent activation of integrins is a common theme. However, I also discuss examples where integrins inhibit the BMP pathway, highlighting the context-dependent nature of integrin–BMP cross-talk.
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40
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Qu F, Lorenzo DN, King SJ, Brooks R, Bear JE, Bennett V. Ankyrin-B is a PI3P effector that promotes polarized α5β1-integrin recycling via recruiting RabGAP1L to early endosomes. eLife 2016; 5. [PMID: 27718357 PMCID: PMC5089861 DOI: 10.7554/elife.20417] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 10/07/2016] [Indexed: 01/03/2023] Open
Abstract
Endosomal membrane trafficking requires coordination between phosphoinositide lipids, Rab GTPases, and microtubule-based motors to dynamically determine endosome identity and promote long-range organelle transport. Here we report that ankyrin-B (AnkB), through integrating all three systems, functions as a critical node in the protein circuitry underlying polarized recycling of α5β1-integrin in mouse embryonic fibroblasts, which enables persistent fibroblast migration along fibronectin gradients. AnkB associates with phosphatidylinositol 3-phosphate (PI3P)-positive organelles in fibroblasts and binds dynactin to promote their long-range motility. We demonstrate that AnkB binds to Rab GTPase Activating Protein 1-Like (RabGAP1L) and recruits it to PI3P-positive organelles, where RabGAP1L inactivates Rab22A, and promotes polarized trafficking to the leading edge of migrating fibroblasts. We further determine that α5β1-integrin depends on an AnkB/RabGAP1L complex for polarized recycling. Our results reveal AnkB as an unexpected key element in coordinating polarized transport of α5β1-integrin and likely of other specialized endocytic cargos.
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Affiliation(s)
- Fangfei Qu
- Department of Biochemistry, Duke University Medical Center, Durham, United States.,Department of Cell Biology, Duke University Medical Center, Durham, United States.,Department of Neurobiology, Duke University Medical Center, Durham, United States.,Howard Hughes Medical Institute, Duke University Medical Center, Durham, United States
| | - Damaris N Lorenzo
- Department of Biochemistry, Duke University Medical Center, Durham, United States.,Department of Cell Biology, Duke University Medical Center, Durham, United States.,Department of Neurobiology, Duke University Medical Center, Durham, United States.,Howard Hughes Medical Institute, Duke University Medical Center, Durham, United States
| | - Samantha J King
- UNC Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Durham, United States.,Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, United States
| | - Rebecca Brooks
- UNC Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Durham, United States.,Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, United States
| | - James E Bear
- UNC Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Durham, United States.,Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, United States
| | - Vann Bennett
- Department of Biochemistry, Duke University Medical Center, Durham, United States.,Department of Cell Biology, Duke University Medical Center, Durham, United States.,Department of Neurobiology, Duke University Medical Center, Durham, United States.,Howard Hughes Medical Institute, Duke University Medical Center, Durham, United States
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Baik J, Magli A, Tahara N, Swanson SA, Koyano-Nakagawa N, Borges L, Stewart R, Garry DJ, Kawakami Y, Thomson JA, Perlingeiro RCR. Endoglin integrates BMP and Wnt signalling to induce haematopoiesis through JDP2. Nat Commun 2016; 7:13101. [PMID: 27713415 PMCID: PMC5059784 DOI: 10.1038/ncomms13101] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 09/02/2016] [Indexed: 01/05/2023] Open
Abstract
Mechanisms of haematopoietic and cardiac patterning remain poorly understood. Here we show that the BMP and Wnt signalling pathways are integrated in an endoglin (Eng)-dependent manner in cardiac and haematopoietic lineage specification. Eng is expressed in early mesoderm and marks both haematopoietic and cardiac progenitors. In the absence of Eng, yolk sacs inappropriately express the cardiac marker, Nkx2.5. Conversely, high levels of Eng in vitro and in vivo increase haematopoiesis and inhibit cardiogenesis. Levels of Eng determine the activation of both BMP and Wnt pathways, which are integrated downstream of Eng by phosphorylation of Smad1 by Gsk3. By interrogating Eng-dependent Wnt-mediated transcriptional changes, we identify Jdp2 as a key Eng-dependent Wnt target, sufficient to establish haematopoietic fate in early mesoderm when BMP and Wnt crosstalk is disturbed. These studies provide mechanistic insight into the integration of BMP and Wnt signalling in the establishment of haematopoietic and cardiac progenitors during embryogenesis. How both BMP and Wnt signalling pathways regulate lineage specification early in development is unclear. Here, the authors show that endoglin via Jdp2, an AP-1 family member, modulates BMP and Wnt signalling to commit mesodermal progenitors to a haematopoietic fate at the expense of the cardiac lineage.
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Affiliation(s)
- June Baik
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Alessandro Magli
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Naoyuki Tahara
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota 55455, USA.,Stem Cell Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Scott A Swanson
- Regerative Biology, Morgridge Institute for Research, Madison, Wisconsin 53715, USA
| | - Naoko Koyano-Nakagawa
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Luciene Borges
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Ron Stewart
- Regerative Biology, Morgridge Institute for Research, Madison, Wisconsin 53715, USA
| | - Daniel J Garry
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Yasuhiko Kawakami
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota 55455, USA.,Stem Cell Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - James A Thomson
- Regerative Biology, Morgridge Institute for Research, Madison, Wisconsin 53715, USA
| | - Rita C R Perlingeiro
- Department of Medicine, Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
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Khan Z, Marshall JF. The role of integrins in TGFβ activation in the tumour stroma. Cell Tissue Res 2016; 365:657-73. [PMID: 27515461 PMCID: PMC5010607 DOI: 10.1007/s00441-016-2474-y] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 07/07/2016] [Indexed: 12/27/2022]
Abstract
TGFβ1 is the most pleiotropic of all known cytokines and thus, to avoid uncontrolled TGFβ-activated processes, its activity is tightly regulated. Studies in fibrosis have led to the discovery that αv integrins are the major regulators of the local activation of latent TGFβ in our tissues. Since all cells can express one or more types of αv integrins, this raises the possibility that, in the complex milieu of a developing cancer, multiple cell types including both cancer cells and stromal cells activate TGFβ. In normal tissues, TGFβ1 is a tumour suppressor through its ability to suppress epithelial cell division, whereas in cancer, in which tumour cells develop genetic escape mechanisms to become resistant to TGFβ growth suppression, TGFβ signalling creates a tumour-permissive environment by activating fibroblast-to-myofibroblast transition, by promoting angiogenesis, by suppressing immune cell populations and by promoting the secretion of both matrix proteins and proteases. In addition, TGFβ drives epithelial-to-mesenchymal transition (EMT) increasing the potential for metastasis. Since αv integrins activate TGFβ, they almost certainly drive TGFβ-dependent cancer progression. In this review, we discuss the data that are helping to develop this hypothesis and describe the evidence that αv integrins regulate the TGFβ promotion of cancer. Graphical Abstract Mechanisms of integrin-mediated transforming growth factor beta (TGFβ) activation and its effect on stromal processes. 1 Matrix-bound latent LAP-TGFβ1 binds αv integrins expressed by epithelial cells or fibroblasts (LAP latency-associated peptide). TGFβ1 becomes exposed. 2 Active TGFβ1 binds the TGFβ receptor in an autocrine or paracrine fashion. 3 TGFβ1 signalling increases integrin expression, LAP-TGFβ1 secretion and trans-differentiation of fibroblasts into contractile cells that secrete collagens and collagen cross-linking proteins. By contracting the matrix, latent TGFβ1 is stretched making the activation of latent TGFβ1 easier and creating a continuous cycle of TGFβ1 signalling. TGFβ1 promotes cancer progression by promoting angiogenesis, immune suppression and epithelial-to-mesenchymal transition (EMT).
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Affiliation(s)
- Zareen Khan
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - John F. Marshall
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
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Yurdagul A, Orr AW. Blood Brothers: Hemodynamics and Cell-Matrix Interactions in Endothelial Function. Antioxid Redox Signal 2016; 25:415-34. [PMID: 26715135 PMCID: PMC5011636 DOI: 10.1089/ars.2015.6525] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 11/25/2015] [Accepted: 12/23/2015] [Indexed: 12/29/2022]
Abstract
SIGNIFICANCE Alterations in endothelial function contribute to a variety of vascular diseases. In pathological conditions, the endothelium shows a reduced ability to regulate vasodilation (endothelial dysfunction) and a conversion toward a proinflammatory and leaky phenotype (endothelial activation). At the interface between the vessel wall and blood, the endothelium exists in a complex microenvironment and must translate changes in these environmental signals to alterations in vessel function. Mechanical stimulation and endothelial cell interactions with the vascular matrix, as well as a host of soluble factors, coordinately contribute to this dynamic regulation. RECENT ADVANCES Blood hemodynamics play an established role in the regulation of endothelial function. However, a growing body of work suggests that subendothelial matrix composition similarly and coordinately regulates endothelial cell phenotype such that blood flow affects matrix remodeling, which affects the endothelial response to flow. CRITICAL ISSUES Hemodynamics and soluble factors likely affect endothelial matrix remodeling through multiple mechanisms, including transforming growth factor β signaling and alterations in cell-matrix receptors, such as the integrins. Likewise, differential integrin signaling following matrix remodeling appears to regulate several key flow-induced responses, including nitric oxide production, regulation of oxidant stress, and activation of proinflammatory signaling and gene expression. Microvascular remodeling responses, such as angiogenesis and arteriogenesis, may also show coordinated regulation by flow and matrix. FUTURE DIRECTIONS Identifying the mechanisms regulating the dynamic interplay between hemodynamics and matrix remodeling and their contribution to the pathogenesis of cardiovascular disease remains an important research area with therapeutic implications across a variety of conditions. Antioxid. Redox Signal. 25, 415-434.
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Affiliation(s)
- Arif Yurdagul
- Department of Cell Biology and Anatomy, Louisiana State University Health Sciences Center–Shreveport, Shreveport, Louisiana
| | - A. Wayne Orr
- Department of Cell Biology and Anatomy, Louisiana State University Health Sciences Center–Shreveport, Shreveport, Louisiana
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center–Shreveport, Shreveport, Louisiana
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44
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Biological relevance of tissue factor and IL-6 in arteriovenous malformations. Neurosurg Rev 2016; 40:359-367. [PMID: 27542852 DOI: 10.1007/s10143-016-0780-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 08/02/2016] [Accepted: 08/15/2016] [Indexed: 10/21/2022]
Abstract
Arteriovenous malformations (AVMs) are congenital abnormal vessels that shunt blood directly from the arterial to the venous system without a capillary bed. The underlying pathology of AVMs is not fully understood. The objective of the study was to determine the association between the expression patterns of tissue factor (TF) and interleukin-6 (IL-6) in AVMs with clinical and pathological findings. Eighteen cases of sporadic AVM with operative specimens were included in this study. The expression of messenger RNA (mRNA) of TF and IL-6 was assayed, and association with clinical factors was investigated. The distribution of TF and IL-6 was examined with immunofluorescence. The mRNA expression of TF was significantly higher in AVM specimens than in control tissues (P = 0.002) and significantly higher in the symptomatic group than in the asymptomatic group (P = 0.037). The mRNA expression of IL-6 was likewise significantly higher in AVM specimens than in control tissues (P = 0.038). Examination of immunostained sections indicated that TF+ cells were also positive for IL-6 and were distributed around normal endothelial cells and pericytes. Moreover, TF+/IL-6+ cells also expressed CD31, vascular endothelial growth factor receptor 2 (VEGFR2), and platelet-derived growth factor receptor beta (PDGFR-beta). These results suggest that TF is elevated in AVMs and that it mediates symptomatic events. IL-6 is associated with the angiogenic activity of TF, and both are present in the same abnormal endothelial cells and pericytes. These factors may have interactive effects and may serve in a prognostic role for AVMs.
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Iwanishi H, Fujita N, Tomoyose K, Okada Y, Yamanaka O, Flanders KC, Saika S. Inhibition of development of laser-induced choroidal neovascularization with suppression of infiltration of macrophages in Smad3-null mice. J Transl Med 2016; 96:641-51. [PMID: 26950486 DOI: 10.1038/labinvest.2016.30] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 01/05/2016] [Accepted: 01/06/2016] [Indexed: 12/18/2022] Open
Abstract
We evaluated the effects of the loss of Smad3 on the development of experimental argon laser-induced choroidal neovascularization (CNV) in mice. An in vitro angiogenesis model was also used to examine the role of transforming growth factor-β1 (TGFβ1)/Smad3 signaling in vessel-like tube formation by human umbilical vein endothelial cells (HUVECs). CNV was induced in eyes of 8-12-week-old B6.129-background Smad3-deficient (KO) mice (n=47) and wild-type (WT) mice (n=47) by argon laser irradiation. Results showed that the size of the CNV induced was significantly smaller in KO mice as compared with WT mice at day 14 as revealed by high-resolution angiography with fluorescein isothiocyanate-dextran. Immunohistochemistry and real-time reverse transcription-polymerase chain reaction of RNA extracted from laser-irradiated choroidal tissues were conducted on specimens at specific timepoints. Invasion of macrophages (F4/80+), but not neutrophils (myeloperoxidase+), and appearance of myofibroblasts (α-smooth muscle actin+) were suppressed in laser-irradiated KO tissues. mRNA expression of inflammation-related factors, that is, vascular endothelial growth factor (VEGF), macrophage-chemoattractant protein-1 (MCP-1), interleukin-6 (IL-6) and TGFβ1 in choroidal tissues was suppressed by the loss of Smad3. We then examined the effects of adding a Smad3 inhibitor, SIS3, or an ALK5 inhibitor, SB431542, on tube formation promoted by TGFβ1 or VEGF in HUVECs cocultured with fibroblast feeder. Further addition of SIS3 or SB431542 augmented vessel-like tube formation by HUVECs in the presence of TGFβ1 or VEGF. In conclusion, lack of Smad3 attenuated the growth of laser-induced CNV with suppression of inflammation by macrophages in mice. Because blocking TGFβ1/Smad3 signal stimulated the activity of angiogenesis of HUVECs in vitro, the reduction of CNV in vivo in KO mice is attributed to a decrease in growth factor levels in the tissue by the loss of Smad3.
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Affiliation(s)
- Hiroki Iwanishi
- Department of Ophthalmology, Wakayama Medical University School of Medicine, Wakayama, Japan
| | - Norihito Fujita
- Department of Ophthalmology, Wakayama Medical University School of Medicine, Wakayama, Japan
| | - Katsuo Tomoyose
- Department of Ophthalmology, Wakayama Medical University School of Medicine, Wakayama, Japan
| | - Yuka Okada
- Department of Ophthalmology, Wakayama Medical University School of Medicine, Wakayama, Japan
| | - Osamu Yamanaka
- Department of Ophthalmology, Wakayama Medical University School of Medicine, Wakayama, Japan
| | - Kathleen C Flanders
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Shizuya Saika
- Department of Ophthalmology, Wakayama Medical University School of Medicine, Wakayama, Japan
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Rossi E, Smadja DM, Boscolo E, Langa C, Arevalo MA, Pericacho M, Gamella-Pozuelo L, Kauskot A, Botella LM, Gaussem P, Bischoff J, Lopez-Novoa JM, Bernabeu C. Endoglin regulates mural cell adhesion in the circulatory system. Cell Mol Life Sci 2016; 73:1715-39. [PMID: 26646071 PMCID: PMC4805714 DOI: 10.1007/s00018-015-2099-4] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 11/19/2015] [Accepted: 11/23/2015] [Indexed: 02/06/2023]
Abstract
The circulatory system is walled off by different cell types, including vascular mural cells and podocytes. The interaction and interplay between endothelial cells (ECs) and mural cells, such as vascular smooth muscle cells or pericytes, play a pivotal role in vascular biology. Endoglin is an RGD-containing counter-receptor for β1 integrins and is highly expressed by ECs during angiogenesis. We find that the adhesion between vascular ECs and mural cells is enhanced by integrin activators and inhibited upon suppression of membrane endoglin or β1-integrin, as well as by addition of soluble endoglin (SolEng), anti-integrin α5β1 antibody or an RGD peptide. Analysis of different endoglin mutants, allowed the mapping of the endoglin RGD motif as involved in the adhesion process. In Eng (+/-) mice, a model for hereditary hemorrhagic telangectasia type 1, endoglin haploinsufficiency induces a pericyte-dependent increase in vascular permeability. Also, transgenic mice overexpressing SolEng, an animal model for preeclampsia, show podocyturia, suggesting that SolEng is responsible for podocytes detachment from glomerular capillaries. These results suggest a critical role for endoglin in integrin-mediated adhesion of mural cells and provide a better understanding on the mechanisms of vessel maturation in normal physiology as well as in pathologies such as preeclampsia or hereditary hemorrhagic telangiectasia.
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MESH Headings
- Animals
- Antigens, CD/genetics
- Antigens, CD/metabolism
- Cell Adhesion/physiology
- Cell Line, Tumor
- Disease Models, Animal
- Endoglin
- Endothelium, Vascular/metabolism
- Female
- Human Umbilical Vein Endothelial Cells/metabolism
- Humans
- Integrin beta1/genetics
- Jurkat Cells
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Nude
- Mice, Transgenic
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/metabolism
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/metabolism
- Neovascularization, Pathologic/metabolism
- Pericytes/metabolism
- Podocytes/metabolism
- Pre-Eclampsia/genetics
- Pre-Eclampsia/pathology
- Pregnancy
- Protein Binding
- RNA Interference
- RNA, Small Interfering
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Retina/metabolism
- Telangiectasia, Hereditary Hemorrhagic/genetics
- Telangiectasia, Hereditary Hemorrhagic/pathology
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Affiliation(s)
- Elisa Rossi
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), c/Ramiro de Maeztu 9, 28040, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28040, Madrid, Spain
- Paris Descartes University, Sorbonne Paris Cite, Paris, France
- Hematology Department, AP-HP, Hôpital Européen Georges Pompidou, Paris, France
| | - David M Smadja
- Hematology Department, AP-HP, Hôpital Européen Georges Pompidou, Paris, France
- Faculté de Pharmacie, Inserm UMR-S1140, Paris, France
| | - Elisa Boscolo
- Department of Surgery, Harvard Medical School, Children's Hospital, Boston, MA, 02115, USA
| | - Carmen Langa
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), c/Ramiro de Maeztu 9, 28040, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28040, Madrid, Spain
| | - Miguel A Arevalo
- Departamento de Anatomía e Histología Humanas, Facultad de Medicina, Universidad de Salamanca, 37007, Salamanca, Spain
- Instituto de Investigaciones Biomédicas de Salamanca (IBSAL), 37007, Salamanca, Spain
| | - Miguel Pericacho
- Instituto de Investigaciones Biomédicas de Salamanca (IBSAL), 37007, Salamanca, Spain
- Departamento de Fisiología y Farmacología, Unidad de Fisiopatología Renal y Cardiovascular, Universidad de Salamanca, 37007, Salamanca, Spain
| | - Luis Gamella-Pozuelo
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), c/Ramiro de Maeztu 9, 28040, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28040, Madrid, Spain
- Departamento de Fisiología y Farmacología, Unidad de Fisiopatología Renal y Cardiovascular, Universidad de Salamanca, 37007, Salamanca, Spain
| | - Alexandre Kauskot
- Inserm UMR-S1176, Le Kremlin Bicêtre, Paris, France
- Université Paris Sud, Le Kremlin Bicêtre, Paris, France
| | - Luisa M Botella
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), c/Ramiro de Maeztu 9, 28040, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28040, Madrid, Spain
| | - Pascale Gaussem
- Hematology Department, AP-HP, Hôpital Européen Georges Pompidou, Paris, France
- Faculté de Pharmacie, Inserm UMR-S1140, Paris, France
| | - Joyce Bischoff
- Department of Surgery, Harvard Medical School, Children's Hospital, Boston, MA, 02115, USA
| | - José M Lopez-Novoa
- Instituto de Investigaciones Biomédicas de Salamanca (IBSAL), 37007, Salamanca, Spain
- Departamento de Fisiología y Farmacología, Unidad de Fisiopatología Renal y Cardiovascular, Universidad de Salamanca, 37007, Salamanca, Spain
| | - Carmelo Bernabeu
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), c/Ramiro de Maeztu 9, 28040, Madrid, Spain.
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28040, Madrid, Spain.
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Mice Lacking Endoglin in Macrophages Show an Impaired Immune Response. PLoS Genet 2016; 12:e1005935. [PMID: 27010826 PMCID: PMC4806930 DOI: 10.1371/journal.pgen.1005935] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 02/24/2016] [Indexed: 12/26/2022] Open
Abstract
Endoglin is an auxiliary receptor for members of the TGF-β superfamily and plays an important role in the homeostasis of the vessel wall. Mutations in endoglin gene (ENG) or in the closely related TGF-β receptor type I ACVRL1/ALK1 are responsible for a rare dominant vascular dysplasia, the Hereditary Hemorrhagic Telangiectasia (HHT), or Rendu-Osler-Weber syndrome. Endoglin is also expressed in human macrophages, but its role in macrophage function remains unknown. In this work, we show that endoglin expression is triggered during the monocyte-macrophage differentiation process, both in vitro and during the in vivo differentiation of blood monocytes recruited to foci of inflammation in wild-type C57BL/6 mice. To analyze the role of endoglin in macrophages in vivo, an endoglin myeloid lineage specific knock-out mouse line (Engfl/flLysMCre) was generated. These mice show a predisposition to develop spontaneous infections by opportunistic bacteria. Engfl/flLysMCre mice also display increased survival following LPS-induced peritonitis, suggesting a delayed immune response. Phagocytic activity is impaired in peritoneal macrophages, altering one of the main functions of macrophages which contributes to the initiation of the immune response. We also observed altered expression of TGF-β1 target genes in endoglin deficient peritoneal macrophages. Overall, the altered immune activity of endoglin deficient macrophages could help to explain the higher rate of infectious diseases seen in HHT1 patients. Endoglin is a transmembrane protein and an auxiliary receptor for TGF-β with an important role in the homeostasis of the vessel wall. However, endoglin was originally identified as a human cell surface antigen expressed in a pre-B leukemic cell line. Mutations in ENG are responsible for the Hereditary Hemorrhagic Telangiectasia type 1 (HHT1) or Rendu-Osler-Weber syndrome. HHT is a rare disease, with a prevalence of 1/5,000 to 1/8,000. It is an autosomal dominant disorder characterized by a multisystemic vascular dysplasia, recurrent hemorrhages and arteriovenous malformations in internal organs. Interestingly, endoglin expression is also triggered during the monocyte-macrophage differentiation process. In our laboratory, we described that up-regulation of endoglin during in vitro differentiation of blood monocytes is age-dependent and impaired in monocytes from HHT patients, suggesting a role of endoglin in macrophages. In the present work, we first analyzed endoglin expression during differentiation of peripheral blood monocytes to macrophages under in vitro and in vivo conditions. Next, to investigate endoglin’s role in macrophage function in vivo, a myeloid-lineage specific endoglin knock-out mouse line was generated (Engfl/flLysMCre). Endoglin deficiency in macrophages predisposed animals to spontaneous infections and led to delayed endotoxin-induced mortality. Phagocytic activity by peritoneal macrophages was reduced in the absence of endoglin and altered expression of TGF-β target genes was consistent with an altered balance of TGF-β signaling. The results show a novel role for endoglin in mouse macrophages, which if analogous in human macrophages, may explain, at least in part, the increased infection rates seen in HHT patients.
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48
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Beauvais S, Drevelle O, Lauzon MA, Daviau A, Faucheux N. Modulation of MAPK signalling by immobilized adhesive peptides: Effect on stem cell response to BMP-9-derived peptides. Acta Biomater 2016; 31:241-251. [PMID: 26675130 DOI: 10.1016/j.actbio.2015.12.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 11/18/2015] [Accepted: 12/02/2015] [Indexed: 12/19/2022]
Abstract
Biomimetic materials were developed to regulate stem cell behaviour. We have analyzed the influence of polycaprolactone (PCL) films, functionalized with adhesive peptides derived from fibronectin (pFibro) or bone sialoprotein (pBSP), on the response of murine multipotent C3H10T1/2 cells to bone morphogenetic protein-9 (BMP-9) and its derived peptides (pBMP-9 and SpBMP-9). PCL-pFibro promoted better cell cytoskeleton organization and faster focal adhesion kinase activation than did PCL-pBSP. PCL-pFibro also promoted MAPK signalling to improve the cell response to BMP-9 by inactivating ERK1/2 and stimulating p38 and JNK. BMP-9, pBMP-9 and SpBMP-9 induced greater phosphorylation of Smad1/5/8 in cells attached to PCL-pFibro than in cells on PCL-pBSP. These phosphorylated Smad1/5/8 were translocated to the nucleus. BMP-9 and its derived peptides restored the phosphorylation of JNK in cells on PCL-pBSP, but it remained less phosphorylated than in cells on PCL-pFibro stimulated with pBMP-9 and SpBMP-9. Cells attached to PCL-pFibro contained more Runx2, essential for stem cell commitment to become osteoblasts, than did cells on PCL-pBSP when incubated with BMP-9 and its derived peptides. Runx2 was no longer detected when the cells were pre-treated with JNK inhibitor. Therefore pFibro plus BMP-9 and its derived peptides may be a promising strategy to develop biomimetic materials. STATEMENT OF SIGNIFICANCE Biomaterials functionalized with adhesive peptides to favour bone repair have generated a great interest over the past decade. However, the effect of these materials on the ability of cells to respond to growth factors remains poorly known. One major growth factor subfamily involved in bone formation is the bone morphogenetic protein (BMP). However, these BMPs are expensive. We therefore developed less costly derived molecules. We showed how adhesive peptides derived from bone matrix proteins grafted onto polymer films affect the intracellular signalling and thus the ability of stem cells to be activated by BMP and its derived molecules. We have therefore identified a combination of bioactive polymers and BMP molecules that direct the stem cells towards bone forming cells.
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49
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Liu Y, Kimura K, Orita T, Suzuki K, Teranishi S, Mori T, Sonoda KH. Inhibition by a retinoic acid receptor γ agonist of extracellular matrix remodeling mediated by human Tenon fibroblasts. Mol Vis 2015; 21:1368-77. [PMID: 26788029 PMCID: PMC4704771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 12/30/2015] [Indexed: 11/07/2022] Open
Abstract
PURPOSE Scar formation is most frequently responsible for the failure of glaucoma filtration surgery. Retinoic acids are vitamin A derivatives that play diverse roles in development, immunity, and tissue repair. The effects of the retinoic acid receptor (RAR) γ agonist R667 on the contractility of human Tenon fibroblasts (HTFs) cultured in a three-dimensional collagen gel as well as on intraocular pressure (IOP) in a rat model of glaucoma filtration surgery were investigated. METHODS HTFs were cultured in a type I collagen gel, the contraction of which was evaluated by measurement of the gel diameter. The release of matrix metalloproteinases (MMPs) into culture supernatants was assessed with immunoblot analysis and gelatin zymography. Phosphorylation of focal adhesion kinase (FAK) was examined with immunoblot analysis, and production of fibronectin and type I collagen was measured with immunoassays. RESULTS R667 inhibited transforming growth factor-β1 (TGF-β1)-induced collagen gel contraction mediated by HTFs in a concentration- and time-dependent manner, whereas an RARα agonist inhibited this process to a lesser extent and an RARβ agonist had no effect. TGF-β1-induced MMP-1 and MMP-3 release, FAK phosphorylation, and fibronectin and type I collagen production in HTFs were also attenuated by R667. Furthermore, R667 lowered IOP in rats after glaucoma filtration surgery. CONCLUSIONS R667 inhibited TGF-β1-induced contraction and extracellular matrix synthesis in HTFs. Such effects might have contributed to the lowering of IOP by R667 in a rat model of glaucoma filtration surgery. RARγ agonists might thus prove effective for inhibition of scar formation after such surgery.
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Affiliation(s)
- Yang Liu
- Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube City, Yamaguchi, Japan
- Department of Ophthalmology, First Hospital of Jilin University, Jilin, PR China
| | - Kazuhiro Kimura
- Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube City, Yamaguchi, Japan
| | - Tomoko Orita
- Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube City, Yamaguchi, Japan
| | - Katsuyoshi Suzuki
- Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube City, Yamaguchi, Japan
| | - Shinichiro Teranishi
- Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube City, Yamaguchi, Japan
| | - Takuya Mori
- Yamaguchi University School of Medicine, Ube City, Yamaguchi, Japan
| | - Koh-Hei Sonoda
- Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube City, Yamaguchi, Japan
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Peak BMP Responses in the Drosophila Embryo Are Dependent on the Activation of Integrin Signaling. Cell Rep 2015; 12:1584-93. [PMID: 26321638 PMCID: PMC4571823 DOI: 10.1016/j.celrep.2015.08.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 06/19/2015] [Accepted: 08/04/2015] [Indexed: 01/09/2023] Open
Abstract
Within a 3D tissue, cells need to integrate signals from growth factors, such as BMPs, and the extracellular matrix (ECM) to coordinate growth and differentiation. Here, we use the Drosophila embryo as a model to investigate how BMP responses are influenced by a cell’s local ECM environment. We show that integrins, which are ECM receptors, are absolutely required for peak BMP signaling. This stimulatory effect of integrins requires their intracellular signaling function, which is activated by the ECM protein collagen IV. Mechanistically, integrins interact with the BMP receptor and stimulate phosphorylation of the downstream Mad transcription factor. The BMP-pathway-enhancing function of integrins is independent of focal adhesion kinase, but it requires conserved NPXY motifs in the β-integrin cytoplasmic tail. Furthermore, we show that an α-integrin subunit is a BMP target gene, identifying positive feedback between integrin signaling and BMP pathway activity that may contribute to robust cell fate decisions. Drosophila embryos lacking integrin function have disrupted BMP responses Collagen IV activates integrin signaling to enhance levels of the pMad transducer Integrins bind BMP receptors and promote pMad levels after BMP receptor activation BMP activates expression of an α-integrin, representing a positive feedback loop
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