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Terri M, Sandoval P, Bontempi G, Montaldo C, Tomero-Sanz H, de Turris V, Trionfetti F, Pascual-Antón L, Clares-Pedrero I, Battistelli C, Valente S, Zwergel C, Mai A, Rosanò L, Del Pozo MÁ, Sánchez-Álvarez M, Cabañas C, Tripodi M, López-Cabrera M, Strippoli R. HDAC1/2 control mesothelium/ovarian cancer adhesive interactions impacting on Talin-1-α5β1-integrin-mediated actin cytoskeleton and extracellular matrix protein remodeling. J Exp Clin Cancer Res 2024; 43:27. [PMID: 38254102 PMCID: PMC10804625 DOI: 10.1186/s13046-023-02930-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 12/10/2023] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND Peritoneal metastasis, which accounts for 85% of all epithelial ovarian carcinoma (EOC) metastases, is a multistep process that requires the establishment of adhesive interactions between cancer cells and the peritoneal membrane. Interrelations between EOC and the mesothelial stroma are critical to facilitate the metastatic process. No data is available so far on the impact of histone acetylation/deacetylation, a potentially relevant mechanism governing EOC metastasis, on mesothelial cells (MCs)-mediated adhesion. METHODS Static adhesion and peritoneal clearance experiments were performed pretreating mesenchymal-like MCs and platinum-sensitive/resistant EOC cell lines with MS-275-a Histone deacetylase (HDAC)1-3 pharmacological inhibitor currently used in combination trials. Results were acquired by confocal microscopy and were analyzed with an automated Opera software. The role of HDAC1/2 was validated by genetic silencing. The role of α4-, α5-α1 Integrins and Fibronectin-1 was validated using specific monoclonal antibodies. Quantitative proteomic analysis was performed on primary MCs pretreated with MS-275. Decellularized matrices were generated from either MS-275-exposed or untreated cells to study Fibronectin-1 extracellular secretion. The effect of MS-275 on β1 integrin activity was assessed using specific monoclonal antibodies. The role of Talin-1 in MCs/EOC adhesion was analyzed by genetic silencing. Talin-1 ectopic expression was validated as a rescue tool from MS-275-induced phenotype. The in vivo effect of MS-275-induced MC remodeling was validated in a mouse model of peritoneal EOC dissemination. RESULTS Treatment of MCs with non-cytotoxic concentrations of MS-275 caused a consistent reduction of EOC adhesion. Proteomic analysis revealed several pathways altered upon MC treatment with MS-275, including ECM deposition/remodeling, adhesion receptors and actin cytoskeleton regulators. HDAC1/2 inhibition hampered actin cytoskeleton polymerization by downregulating actin regulators including Talin-1, impairing β1 integrin activation, and leading to abnormal extracellular secretion and distribution of Fibronectin-1. Talin-1 ectopic expression rescued EOC adhesion to MS-275-treated MCs. In an experimental mouse model of metastatic EOC, MS-275 limited tumor invasion, Fibronectin-1 secretion and the sub-mesothelial accumulation of MC-derived carcinoma-associated fibroblasts. CONCLUSION Our study unveils a direct impact of HDAC-1/2 in the regulation of MC/EOC adhesion and highlights the regulation of MC plasticity by epigenetic inhibition as a potential target for therapeutic intervention in EOC peritoneal metastasis.
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Affiliation(s)
- Michela Terri
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
- National Institute for Infectious Diseases L. Spallanzani, IRCCS, Via Portuense, 292, 00149, Rome, Italy
| | - Pilar Sandoval
- Tissue and Organ Homeostasis Program, Cell-Cell Communication and Inflammation Unit, Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Consejo Superior de Investigaciones Científicas, 28049, Madrid, Spain
| | - Giulio Bontempi
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
- National Institute for Infectious Diseases L. Spallanzani, IRCCS, Via Portuense, 292, 00149, Rome, Italy
| | - Claudia Montaldo
- National Institute for Infectious Diseases L. Spallanzani, IRCCS, Via Portuense, 292, 00149, Rome, Italy
| | - Henar Tomero-Sanz
- Tissue and Organ Homeostasis Program, Cell-Cell Communication and Inflammation Unit, Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Consejo Superior de Investigaciones Científicas, 28049, Madrid, Spain
| | - Valeria de Turris
- Center for Life Nano- & Neuro-Science, Istituto Italiano di Tecnologia (IIT), 00161, Rome, Italy
| | - Flavia Trionfetti
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
- National Institute for Infectious Diseases L. Spallanzani, IRCCS, Via Portuense, 292, 00149, Rome, Italy
| | - Lucía Pascual-Antón
- Tissue and Organ Homeostasis Program, Cell-Cell Communication and Inflammation Unit, Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Consejo Superior de Investigaciones Científicas, 28049, Madrid, Spain
| | - Irene Clares-Pedrero
- Tissue and Organ Homeostasis Program, Cell-Cell Communication and Inflammation Unit, Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Consejo Superior de Investigaciones Científicas, 28049, Madrid, Spain
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Cecilia Battistelli
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
| | - Sergio Valente
- Department of Drug Chemistry and Technologies, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Clemens Zwergel
- Department of Drug Chemistry and Technologies, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Antonello Mai
- Department of Drug Chemistry and Technologies, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Laura Rosanò
- Institute of Molecular Biology and Pathology, CNR, Rome, Italy
| | - Miguel Ángel Del Pozo
- Mechanoadaptation and Caveolae Biology Lab, Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Miguel Sánchez-Álvarez
- Cell Compartmentalization, Homeostasis and Inflammation lab. Department of Metabolic and Immunity Diseases, Instituto de Investigaciones Biomédicas "Sols-Morreale", 28029, Madrid, Spain
| | - Carlos Cabañas
- Tissue and Organ Homeostasis Program, Cell-Cell Communication and Inflammation Unit, Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Consejo Superior de Investigaciones Científicas, 28049, Madrid, Spain
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Marco Tripodi
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy
- National Institute for Infectious Diseases L. Spallanzani, IRCCS, Via Portuense, 292, 00149, Rome, Italy
| | - Manuel López-Cabrera
- Tissue and Organ Homeostasis Program, Cell-Cell Communication and Inflammation Unit, Centro de Biología Molecular "Severo Ochoa" (UAM-CSIC), Consejo Superior de Investigaciones Científicas, 28049, Madrid, Spain
| | - Raffaele Strippoli
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy.
- National Institute for Infectious Diseases L. Spallanzani, IRCCS, Via Portuense, 292, 00149, Rome, Italy.
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Torres-Gomez A, Fiyouzi T, Guerra-Espinosa C, Cardeñes B, Clares I, Toribio V, Reche PA, Cabañas C, Lafuente EM. Expression of the phagocytic receptors αMβ2 and αXβ2 is controlled by RIAM, VASP and Vinculin in neutrophil-differentiated HL-60 cells. Front Immunol 2022; 13:951280. [PMID: 36238292 PMCID: PMC9552961 DOI: 10.3389/fimmu.2022.951280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/23/2022] [Indexed: 11/29/2022] Open
Abstract
Activation of the integrin phagocytic receptors CR3 (αMβ2, CD11b/CD18) and CR4 (αXβ2, CD11c/CD18) requires Rap1 activation and RIAM function. RIAM controls integrin activation by recruiting Talin to β2 subunits, enabling the Talin-Vinculin interaction, which in term bridges integrins to the actin-cytoskeleton. RIAM also recruits VASP to phagocytic cups and facilitates VASP phosphorylation and function promoting particle internalization. Using a CRISPR-Cas9 knockout approach, we have analyzed the requirement for RIAM, VASP and Vinculin expression in neutrophilic-HL-60 cells. All knockout cells displayed abolished phagocytosis that was accompanied by a significant and specific reduction in ITGAM (αM), ITGAX (αX) and ITGB2 (β2) mRNA, as revealed by RT-qPCR. RIAM, VASP and Vinculin KOs presented reduced cellular F-actin content that correlated with αM expression, as treatment with the actin filament polymerizing and stabilizing drug jasplakinolide, partially restored αM expression. In general, the expression of αX was less responsive to jasplakinolide treatment than αM, indicating that regulatory mechanisms independent of F-actin content may be involved. The Serum Response Factor (SRF) was investigated as the potential transcription factor controlling αMβ2 expression, since its coactivator MRTF-A requires actin polymerization to induce transcription. Immunofluorescent MRTF-A localization in parental cells was primarily nuclear, while in knockouts it exhibited a diffuse cytoplasmic pattern. Localization of FHL-2 (SRF corepressor) was mainly sub-membranous in parental HL-60 cells, but in knockouts the localization was disperse in the cytoplasm and the nucleus, suggesting RIAM, VASP and Vinculin are required to maintain FHL-2 close to cytoplasmic membranes, reducing its nuclear localization and inhibiting its corepressor activity. Finally, reexpression of VASP in the VASP knockout resulted in a complete reversion of the phenotype, as knock-ins restored αM expression. Taken together, our results suggest that RIAM, VASP and Vinculin, are necessary for the correct expression of αMβ2 and αXβ2 during neutrophilic differentiation in the human promyelocytic HL-60 cell line, and strongly point to an involvement of these proteins in the acquisition of a phagocytic phenotype.
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Affiliation(s)
- Alvaro Torres-Gomez
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Inflammatory Diseases and Immune Disorders (Lymphocyte Immunobiology Unit), Madrid, Spain
- *Correspondence: Esther M. Lafuente, ; Alvaro Torres-Gomez,
| | - Tara Fiyouzi
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Inflammatory Diseases and Immune Disorders (Lymphocyte Immunobiology Unit), Madrid, Spain
| | - Claudia Guerra-Espinosa
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Beatriz Cardeñes
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Inflammatory Diseases and Immune Disorders (Lymphocyte Immunobiology Unit), Madrid, Spain
| | - Irene Clares
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Inflammatory Diseases and Immune Disorders (Lymphocyte Immunobiology Unit), Madrid, Spain
| | - Víctor Toribio
- Tissue and Organ Homeostasis Program (Cell-Cell Communication and Inflammation Unit), Centre for Molecular Biology "Severo Ochoa", Consejo Superior de Investigaciones Científicas (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Pedro A. Reche
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Inflammatory Diseases and Immune Disorders (Lymphocyte Immunobiology Unit), Madrid, Spain
| | - Carlos Cabañas
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Inflammatory Diseases and Immune Disorders (Lymphocyte Immunobiology Unit), Madrid, Spain
- Tissue and Organ Homeostasis Program (Cell-Cell Communication and Inflammation Unit), Centre for Molecular Biology "Severo Ochoa", Consejo Superior de Investigaciones Científicas (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Esther M. Lafuente
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Inflammatory Diseases and Immune Disorders (Lymphocyte Immunobiology Unit), Madrid, Spain
- *Correspondence: Esther M. Lafuente, ; Alvaro Torres-Gomez,
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Pascual-Antón L, Cardeñes B, Sainz de la Cuesta R, González-Cortijo L, López-Cabrera M, Cabañas C, Sandoval P. Mesothelial-to-Mesenchymal Transition and Exosomes in Peritoneal Metastasis of Ovarian Cancer. Int J Mol Sci 2021; 22:ijms222111496. [PMID: 34768926 PMCID: PMC8584135 DOI: 10.3390/ijms222111496] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/18/2021] [Accepted: 10/21/2021] [Indexed: 12/21/2022] Open
Abstract
Most patients with ovarian cancer (OvCA) present peritoneal disseminated disease at the time of diagnosis. During peritoneal metastasis, cancer cells detach from the primary tumor and disseminate through the intraperitoneal fluid. The peritoneal mesothelial cell (PMC) monolayer that lines the abdominal cavity is the first barrier encountered by OvCA cells. Subsequent progression of tumors through the peritoneum leads to the accumulation into the peritoneal stroma of a sizeable population of carcinoma-associated fibroblasts (CAFs), which is mainly originated from a mesothelial-to-mesenchymal transition (MMT) process. A common characteristic of OvCA patients is the intraperitoneal accumulation of ascitic fluid, which is composed of cytokines, chemokines, growth factors, miRNAs, and proteins contained in exosomes, as well as tumor and mesothelial suspended cells, among other components that vary in proportion between patients. Exosomes are small extracellular vesicles that have been shown to mediate peritoneal metastasis by educating a pre-metastatic niche, promoting the accumulation of CAFs via MMT, and inducing tumor growth and chemoresistance. This review summarizes and discusses the pivotal role of exosomes and MMT as mediators of OvCA peritoneal colonization and as emerging diagnostic and therapeutic targets.
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Affiliation(s)
- Lucía Pascual-Antón
- Tissue and Organ Homeostasis Program, Cell-Cell Communication and Inflammation Unit, Centro de Biología Molecular “Severo Ochoa” (UAM-CSIC), Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain; (L.P.-A.); (B.C.); (M.L.-C.)
| | - Beatriz Cardeñes
- Tissue and Organ Homeostasis Program, Cell-Cell Communication and Inflammation Unit, Centro de Biología Molecular “Severo Ochoa” (UAM-CSIC), Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain; (L.P.-A.); (B.C.); (M.L.-C.)
| | | | | | - Manuel López-Cabrera
- Tissue and Organ Homeostasis Program, Cell-Cell Communication and Inflammation Unit, Centro de Biología Molecular “Severo Ochoa” (UAM-CSIC), Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain; (L.P.-A.); (B.C.); (M.L.-C.)
| | - Carlos Cabañas
- Tissue and Organ Homeostasis Program, Cell-Cell Communication and Inflammation Unit, Centro de Biología Molecular “Severo Ochoa” (UAM-CSIC), Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain; (L.P.-A.); (B.C.); (M.L.-C.)
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Lymphocyte Immunobiology Group, Inflammatory and Immune Disorders Area, Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
- Correspondence: (C.C.); (P.S.); Tel.: +34-91-196-4513 (C.C.); +34-91-196-4707 (P.S.)
| | - Pilar Sandoval
- Tissue and Organ Homeostasis Program, Cell-Cell Communication and Inflammation Unit, Centro de Biología Molecular “Severo Ochoa” (UAM-CSIC), Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain; (L.P.-A.); (B.C.); (M.L.-C.)
- Correspondence: (C.C.); (P.S.); Tel.: +34-91-196-4513 (C.C.); +34-91-196-4707 (P.S.)
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Cardeñes B, Clares I, Toribio V, Pascual L, López-Martín S, Torres-Gomez A, Sainz de la Cuesta R, Lafuente EM, López-Cabrera M, Yáñez-Mó M, Cabañas C. Cellular Integrin α5β1 and Exosomal ADAM17 Mediate the Binding and Uptake of Exosomes Produced by Colorectal Carcinoma Cells. Int J Mol Sci 2021; 22:ijms22189938. [PMID: 34576100 PMCID: PMC8471098 DOI: 10.3390/ijms22189938] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 09/10/2021] [Indexed: 12/13/2022] Open
Abstract
Approximately 25% of colorectal cancer (CRC) patients develop peritoneal metastasis, a condition associated with a bleak prognosis. The CRC peritoneal dissemination cascade involves the shedding of cancer cells from the primary tumor, their transport through the peritoneal cavity, their adhesion to the peritoneal mesothelial cells (PMCs) that line all peritoneal organs, and invasion of cancer cells through this mesothelial cell barrier and underlying stroma to establish new metastatic foci. Exosomes produced by cancer cells have been shown to influence many processes related to cancer progression and metastasis. In epithelial ovarian cancer these extracellular vesicles (EVs) have been shown to favor different steps of the peritoneal dissemination cascade by changing the functional phenotype of cancer cells and PMCs. Little is currently known, however, about the roles played by exosomes in the pathogenesis and peritoneal metastasis cascade of CRC and especially about the molecules that mediate their interaction and uptake by target PMCs and tumor cells. We isolated exosomes by size−exclusion chromatography from CRC cells and performed cell-adhesion assays to immobilized exosomes in the presence of blocking antibodies against surface proteins and measured the uptake of fluorescently-labelled exosomes. We report here that the interaction between integrin α5β1 on CRC cells (and PMCs) and its ligand ADAM17 on exosomes mediated the binding and uptake of CRC-derived exosomes. Furthermore, this process was negatively regulated by the expression of tetraspanin CD9 on exosomes.
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Affiliation(s)
- Beatriz Cardeñes
- Centre for Molecular Biology “Severo Ochoa” (CSIC-UAM), Cell-Cell Communication & Inflammation Unit, 28049 Madrid, Spain; (B.C.); (I.C.); (V.T.); (L.P.); (S.L.-M.); (M.L.-C.); (M.Y.-M.)
| | - Irene Clares
- Centre for Molecular Biology “Severo Ochoa” (CSIC-UAM), Cell-Cell Communication & Inflammation Unit, 28049 Madrid, Spain; (B.C.); (I.C.); (V.T.); (L.P.); (S.L.-M.); (M.L.-C.); (M.Y.-M.)
| | - Víctor Toribio
- Centre for Molecular Biology “Severo Ochoa” (CSIC-UAM), Cell-Cell Communication & Inflammation Unit, 28049 Madrid, Spain; (B.C.); (I.C.); (V.T.); (L.P.); (S.L.-M.); (M.L.-C.); (M.Y.-M.)
- Department of Molecular Biology, Faculty of Sciences, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Lucía Pascual
- Centre for Molecular Biology “Severo Ochoa” (CSIC-UAM), Cell-Cell Communication & Inflammation Unit, 28049 Madrid, Spain; (B.C.); (I.C.); (V.T.); (L.P.); (S.L.-M.); (M.L.-C.); (M.Y.-M.)
| | - Soraya López-Martín
- Centre for Molecular Biology “Severo Ochoa” (CSIC-UAM), Cell-Cell Communication & Inflammation Unit, 28049 Madrid, Spain; (B.C.); (I.C.); (V.T.); (L.P.); (S.L.-M.); (M.L.-C.); (M.Y.-M.)
- Department of Molecular Biology, Faculty of Sciences, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Alvaro Torres-Gomez
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain; (A.T.-G.); (E.M.L.)
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
| | - Ricardo Sainz de la Cuesta
- Department of Obstetrics and Gynecology, Hospital Universitario Quironsalud Madrid, 28223 Madrid, Spain;
| | - Esther M. Lafuente
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain; (A.T.-G.); (E.M.L.)
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
| | - Manuel López-Cabrera
- Centre for Molecular Biology “Severo Ochoa” (CSIC-UAM), Cell-Cell Communication & Inflammation Unit, 28049 Madrid, Spain; (B.C.); (I.C.); (V.T.); (L.P.); (S.L.-M.); (M.L.-C.); (M.Y.-M.)
| | - María Yáñez-Mó
- Centre for Molecular Biology “Severo Ochoa” (CSIC-UAM), Cell-Cell Communication & Inflammation Unit, 28049 Madrid, Spain; (B.C.); (I.C.); (V.T.); (L.P.); (S.L.-M.); (M.L.-C.); (M.Y.-M.)
- Department of Molecular Biology, Faculty of Sciences, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Instituto de Investigación Sanitaria Hospital La Princesa, 28006 Madrid, Spain
| | - Carlos Cabañas
- Centre for Molecular Biology “Severo Ochoa” (CSIC-UAM), Cell-Cell Communication & Inflammation Unit, 28049 Madrid, Spain; (B.C.); (I.C.); (V.T.); (L.P.); (S.L.-M.); (M.L.-C.); (M.Y.-M.)
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain; (A.T.-G.); (E.M.L.)
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
- Correspondence: or ; Tel.: +34-911964513
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Arimori T, Miyazaki N, Mihara E, Takizawa M, Taniguchi Y, Cabañas C, Sekiguchi K, Takagi J. Structural mechanism of laminin recognition by integrin. Nat Commun 2021; 12:4012. [PMID: 34188035 PMCID: PMC8241838 DOI: 10.1038/s41467-021-24184-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 06/04/2021] [Indexed: 02/06/2023] Open
Abstract
Recognition of laminin by integrin receptors is central to the epithelial cell adhesion to basement membrane, but the structural background of this molecular interaction remained elusive. Here, we report the structures of the prototypic laminin receptor α6β1 integrin alone and in complex with three-chain laminin-511 fragment determined via crystallography and cryo-electron microscopy, respectively. The laminin-integrin interface is made up of several binding sites located on all five subunits, with the laminin γ1 chain C-terminal portion providing focal interaction using two carboxylate anchor points to bridge metal-ion dependent adhesion site of integrin β1 subunit and Asn189 of integrin α6 subunit. Laminin α5 chain also contributes to the affinity and specificity by making electrostatic interactions with large surface on the β-propeller domain of α6, part of which comprises an alternatively spliced X1 region. The propeller sheet corresponding to this region shows unusually high mobility, suggesting its unique role in ligand capture.
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Affiliation(s)
- Takao Arimori
- grid.136593.b0000 0004 0373 3971Laboratory for Protein Synthesis and Expression, Institute for Protein Research, Osaka University, Suita, Osaka Japan
| | - Naoyuki Miyazaki
- grid.136593.b0000 0004 0373 3971Laboratory for Protein Synthesis and Expression, Institute for Protein Research, Osaka University, Suita, Osaka Japan ,grid.20515.330000 0001 2369 4728Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki, Japan
| | - Emiko Mihara
- grid.136593.b0000 0004 0373 3971Laboratory for Protein Synthesis and Expression, Institute for Protein Research, Osaka University, Suita, Osaka Japan
| | - Mamoru Takizawa
- grid.136593.b0000 0004 0373 3971Division of Matrixome Research and Application, Institute for Protein Research, Osaka University, Suita, Osaka Japan
| | - Yukimasa Taniguchi
- grid.136593.b0000 0004 0373 3971Division of Matrixome Research and Application, Institute for Protein Research, Osaka University, Suita, Osaka Japan
| | - Carlos Cabañas
- grid.465524.4Cell-cell Communication & Inflammation Unit, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain ,grid.4795.f0000 0001 2157 7667Department of Immunology, Ophthalmology and Otorhinolaryngology (IOO), Faculty of Medicine, Universidad Complutense de Madrid, Madrid, Spain ,grid.144756.50000 0001 1945 5329Instituto de Investigación Sanitaria Hospital 12 Octubre (i+12), Madrid, Spain
| | - Kiyotoshi Sekiguchi
- grid.136593.b0000 0004 0373 3971Division of Matrixome Research and Application, Institute for Protein Research, Osaka University, Suita, Osaka Japan
| | - Junichi Takagi
- grid.136593.b0000 0004 0373 3971Laboratory for Protein Synthesis and Expression, Institute for Protein Research, Osaka University, Suita, Osaka Japan
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Torres-Gómez Á, Cardeñes B, Díez-Sainz E, Lafuente EM, Cabañas C. Functional Integrin Regulation Through Interactions with Tetraspanin CD9. Methods Mol Biol 2021; 2217:47-56. [PMID: 33215376 DOI: 10.1007/978-1-0716-0962-0_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Integrins are adhesion receptors that mediate many intercellular and cell-extracellular matrix interactions with relevance in physiology and pathology. Unlike other cellular receptors, integrins critically require activation for ligand binding. Through interaction in cis with other molecules and the formation of tetraspanin-enriched membrane microdomains (TEMs), the tetraspanin CD9 regulates integrin activity and avidity. Here we present three techniques used to study CD9-integrin interactions and integrin activation.
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Affiliation(s)
- Álvaro Torres-Gómez
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria i+12, Hospital 12 de Octubre, Madrid, Spain
| | - Beatriz Cardeñes
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain
| | - Ester Díez-Sainz
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain
| | - Esther M Lafuente
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria i+12, Hospital 12 de Octubre, Madrid, Spain
| | - Carlos Cabañas
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.
- Instituto de Investigación Sanitaria i+12, Hospital 12 de Octubre, Madrid, Spain.
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain.
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7
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Mikuličić S, Fritzen A, Scheffer K, Strunk J, Cabañas C, Sperrhacke M, Reiss K, Florin L. Tetraspanin CD9 affects HPV16 infection by modulating ADAM17 activity and the ERK signalling pathway. Med Microbiol Immunol 2020; 209:461-471. [PMID: 32385608 PMCID: PMC7206579 DOI: 10.1007/s00430-020-00671-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 03/24/2020] [Indexed: 12/21/2022]
Abstract
Human papillomaviruses (HPV) are causative agents of various tumours such as cervical cancer. HPV binding to the cell surface of keratinocytes leads to virus endocytosis at tetraspanin enriched microdomains. Complex interactions of the capsid proteins with host proteins as well as ADAM17-dependent ERK1/2 signal transduction enable the entry platform assembly of the oncogenic HPV type 16. Here, we studied the importance of tetraspanin CD9, also known as TSPAN29, in HPV16 infection of different epithelial cells. We found that both overexpression and loss of the tetraspanin decreased infection rates in cells with low endogenous CD9 levels, while reduction of CD9 expression in keratinocytes that exhibit high-CD9 protein amounts, led to an increase of infection. Therefore, we concluded that low-CD9 supports infection. Moreover, we found that changes in CD9 amounts affect the shedding of the ADAM17 substrate transforming growth factor alpha (TGFα) and the downstream phosphorylation of ERK. These effects correlate with those on infection rates suggesting that a specific CD9 optimum promotes ADAM17 activity, ERK signalling and virus infection. Together, our findings implicate that CD9 regulates HPV16 infection through the modulation of ADAM17 sheddase activity.
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Affiliation(s)
- Snježana Mikuličić
- Institute for Virology and Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Obere Zahlbacher Strasse 67, Augustusplatz, 55131, Mainz, Germany
| | - Anna Fritzen
- Institute for Virology and Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Obere Zahlbacher Strasse 67, Augustusplatz, 55131, Mainz, Germany
| | - Konstanze Scheffer
- Institute for Virology and Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Obere Zahlbacher Strasse 67, Augustusplatz, 55131, Mainz, Germany
| | - Johannes Strunk
- Institute for Virology and Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Obere Zahlbacher Strasse 67, Augustusplatz, 55131, Mainz, Germany
- Max Planck Graduate Center, Mainz, Germany
| | - Carlos Cabañas
- Department of Cell Biology and Immunology, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), 28049, Madrid, Spain
- Department of Immunology, Ophthalmology and Otorhinolaryngology (IOO), Faculty of Medicine, Universidad Complutense, 28040, Madrid, Spain
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), 28041, Madrid, Spain
| | - Maria Sperrhacke
- Department of Dermatology and Allergology, University Hospital Schleswig-Holstein Campus, Rosalind-Franklin-Straße 9, 24105, Kiel, Germany
| | - Karina Reiss
- Department of Dermatology and Allergology, University Hospital Schleswig-Holstein Campus, Rosalind-Franklin-Straße 9, 24105, Kiel, Germany
| | - Luise Florin
- Institute for Virology and Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Obere Zahlbacher Strasse 67, Augustusplatz, 55131, Mainz, Germany.
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8
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Abstract
Phagocytic integrins are endowed with the ability to engulf and dispose of particles of different natures. Evolutionarily conserved from worms to humans, they are involved in pathogen elimination and apoptotic and tumoral cell clearance. Research in the field of integrin-mediated phagocytosis has shed light on the molecular events controlling integrin activation and their effector functions. However, there are still some aspects of the regulation of the phagocytic process that need to be clarified. Here, we have revised the molecular events controlling phagocytic integrin activation and the downstream signaling driving particle engulfment, and we have focused particularly on αMβ2/CR3, αXβ2/CR4, and a brief mention of αVβ5/αVβ3integrins.
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Affiliation(s)
- Alvaro Torres-Gomez
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.,Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Madrid, Spain
| | - Carlos Cabañas
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.,Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Madrid, Spain.,Severo Ochoa Center for Molecular Biology (CSIC-UAM), Madrid, Spain
| | - Esther M Lafuente
- Department of Immunology, Ophthalmology and Otorhinolaryngology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.,Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Madrid, Spain
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9
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Cabañas C, Yáñez-Mó M, van Spriel AB. Editorial: Functional Relevance of Tetraspanins in the Immune System. Front Immunol 2019; 10:1714. [PMID: 31396226 PMCID: PMC6667632 DOI: 10.3389/fimmu.2019.01714] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 07/09/2019] [Indexed: 01/29/2023] Open
Affiliation(s)
- Carlos Cabañas
- Department of Cell Biology and Immunology, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain.,Department of Immunology, Ophthalmology and Otorhinolaryngology (IO2), Faculty of Medicine, Universidad Complutense, Madrid, Spain.,Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Madrid, Spain
| | - María Yáñez-Mó
- Departamento de Biología Molecular, CBM-SO, UAM/IIS-IP, Madrid, Spain
| | - Annemiek B van Spriel
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, Netherlands
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10
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Castro-Sánchez P, Ramirez-Munoz R, Martín-Cófreces NB, Aguilar-Sopeña O, Alegre-Gomez S, Hernández-Pérez S, Reyes R, Zeng Q, Cabañas C, Sánchez-Madrid F, Roda-Navarro P. Phosphatase of Regenerating Liver-1 (PRL-1) Regulates Actin Dynamics During Immunological Synapse Assembly and T Cell Effector Function. Front Immunol 2018; 9:2655. [PMID: 30515156 PMCID: PMC6255827 DOI: 10.3389/fimmu.2018.02655] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 10/29/2018] [Indexed: 12/30/2022] Open
Abstract
The regulatory role of most dual specific phosphatases during T cell activation remains unknown. Here, we have studied the expression and function of phosphatases of regenerating liver (PRLs: PRL-1, PRL-2, and PRL-3) during T cell activation, as well as, the dynamic delivery of PRL-1 to the Immunological Synapse (IS). We found that T cell activation downregulates the expression of PRL-2, resulting in an increased PRL-1/PRL-2 ratio. PRL-1 redistributed at the IS in two stages: Initially, it was transiently accumulated at scanning membranes enriched in CD3 and actin, and at later times, it was delivered at the contact site from pericentriolar, CD3ζ-containing, vesicles. Once at the established IS, PRL-1 distributed to LFA-1 and CD3ε sites. Remarkably, PRL-1 was found to regulate actin dynamics during IS assembly and the secretion of IL-2. Moreover, pharmacological inhibition of the catalytic activity of the three PRLs reduced the secretion of IL-2. These results provide evidence indicating a regulatory role of PRL-1 during IS assembly and highlight the involvement of PRLs in immune responses by mature T cells.
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Affiliation(s)
- Patricia Castro-Sánchez
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.,12 de Octubre Health Research Institute (imas12), Madrid, Spain
| | - Rocío Ramirez-Munoz
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.,12 de Octubre Health Research Institute (imas12), Madrid, Spain
| | - Noa B Martín-Cófreces
- Servicio de Inmunología. Hospital Universitario de la Princesa, Universidad Autónoma de Madrid, Instituto de Investigación Sanitaria Princesa (IP), Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Oscar Aguilar-Sopeña
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.,12 de Octubre Health Research Institute (imas12), Madrid, Spain
| | - Sergio Alegre-Gomez
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.,12 de Octubre Health Research Institute (imas12), Madrid, Spain
| | - Sara Hernández-Pérez
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.,12 de Octubre Health Research Institute (imas12), Madrid, Spain
| | - Raquel Reyes
- Department of Cell Biology and Immunology, Center for Molecular Biology Severo Ochoa (CBM-SO), Mayor Council of Scientific Research (CSIC), Madrid, Spain
| | - Qi Zeng
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Carlos Cabañas
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.,12 de Octubre Health Research Institute (imas12), Madrid, Spain.,Department of Cell Biology and Immunology, Center for Molecular Biology Severo Ochoa (CBM-SO), Mayor Council of Scientific Research (CSIC), Madrid, Spain
| | - Francisco Sánchez-Madrid
- Servicio de Inmunología. Hospital Universitario de la Princesa, Universidad Autónoma de Madrid, Instituto de Investigación Sanitaria Princesa (IP), Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Pedro Roda-Navarro
- Department of Immunology, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.,12 de Octubre Health Research Institute (imas12), Madrid, Spain
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11
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Machado-Pineda Y, Cardeñes B, Reyes R, López-Martín S, Toribio V, Sánchez-Organero P, Suarez H, Grötzinger J, Lorenzen I, Yáñez-Mó M, Cabañas C. CD9 Controls Integrin α5β1-Mediated Cell Adhesion by Modulating Its Association With the Metalloproteinase ADAM17. Front Immunol 2018; 9:2474. [PMID: 30455686 PMCID: PMC6230984 DOI: 10.3389/fimmu.2018.02474] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 10/08/2018] [Indexed: 12/21/2022] Open
Abstract
Integrin α5β1 is a crucial adhesion molecule that mediates the adherence of many cell types to the extracellular matrix through recognition of its classic ligand fibronectin as well as to other cells through binding to an alternative counter-receptor, the metalloproteinase ADAM17/TACE. Interactions between integrin α5β1 and ADAM17 may take place both in trans (between molecules expressed on different cells) or in cis (between molecules expressed on the same cell) configurations. It has been recently reported that the cis association between α5β1 and ADAM17 keeps both molecules inactive, whereas their dissociation results in activation of their adhesive and metalloproteinase activities. Here we show that the tetraspanin CD9 negatively regulates integrin α5β1-mediated cell adhesion by enhancing the cis interaction of this integrin with ADAM17 on the cell surface. Additionally we show that, similarly to CD9, the monoclonal antibody 2A10 directed to the disintegrin domain of ADAM17 specifically inhibits integrin α5β1-mediated cell adhesion to its ligands fibronectin and ADAM17.
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Affiliation(s)
- Yesenia Machado-Pineda
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain
| | - Beatriz Cardeñes
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain
| | - Raquel Reyes
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain
| | - Soraya López-Martín
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain.,Departamento de Biología Molecular, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain
| | - Víctor Toribio
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain.,Departamento de Biología Molecular, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain
| | - Paula Sánchez-Organero
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain
| | - Henar Suarez
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain.,Departamento de Biología Molecular, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain
| | - Joachim Grötzinger
- Institute of Biochemistry, Christian-Albrechts University, Kiel, Germany
| | - Inken Lorenzen
- Department of Structural Biology, Institute of Zoology, Kiel, Germany
| | - María Yáñez-Mó
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain.,Departamento de Biología Molecular, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain.,Centro de Biología Molecular Severo Ochoa, Instituto de Investigación Sanitaria la Princesa (IIS-IP), Madrid, Spain
| | - Carlos Cabañas
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain.,Departamento de Inmunología, Oftalmología y OTR, Facultad de Medicina, Universidad Complutense, Madrid, Spain
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12
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Reyes R, Cardeñes B, Machado-Pineda Y, Cabañas C. Tetraspanin CD9: A Key Regulator of Cell Adhesion in the Immune System. Front Immunol 2018; 9:863. [PMID: 29760699 PMCID: PMC5936783 DOI: 10.3389/fimmu.2018.00863] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 04/09/2018] [Indexed: 12/21/2022] Open
Abstract
The tetraspanin CD9 is expressed by all the major subsets of leukocytes (B cells, CD4+ T cells, CD8+ T cells, natural killer cells, granulocytes, monocytes and macrophages, and immature and mature dendritic cells) and also at a high level by endothelial cells. As a typical member of the tetraspanin superfamily, a prominent feature of CD9 is its propensity to engage in a multitude of interactions with other tetraspanins as well as with different transmembrane and intracellular proteins within the context of defined membranal domains termed tetraspanin-enriched microdomains (TEMs). Through these associations, CD9 influences many cellular activities in the different subtypes of leukocytes and in endothelial cells, including intracellular signaling, proliferation, activation, survival, migration, invasion, adhesion, and diapedesis. Several excellent reviews have already covered the topic of how tetraspanins, including CD9, regulate these cellular processes in the different cells of the immune system. In this mini-review, however, we will focus particularly on describing and discussing the regulatory effects exerted by CD9 on different adhesion molecules that play pivotal roles in the physiology of leukocytes and endothelial cells, with a particular emphasis in the regulation of adhesion molecules of the integrin and immunoglobulin superfamilies.
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Affiliation(s)
- Raquel Reyes
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain
| | - Beatriz Cardeñes
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain
| | - Yesenia Machado-Pineda
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain
| | - Carlos Cabañas
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain.,Departamento de Inmunología, Oftalmología y OTR (IO2), Facultad de Medicina, Universidad Complutense, Madrid, Spain
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13
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Willms E, Cabañas C, Mäger I, Wood MJA, Vader P. Extracellular Vesicle Heterogeneity: Subpopulations, Isolation Techniques, and Diverse Functions in Cancer Progression. Front Immunol 2018; 9:738. [PMID: 29760691 PMCID: PMC5936763 DOI: 10.3389/fimmu.2018.00738] [Citation(s) in RCA: 538] [Impact Index Per Article: 89.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 03/26/2018] [Indexed: 12/14/2022] Open
Abstract
Cells release membrane enclosed nano-sized vesicles termed extracellular vesicles (EVs) that function as mediators of intercellular communication by transferring biological information between cells. Tumor-derived EVs have emerged as important mediators in cancer development and progression, mainly through transfer of their bioactive content which can include oncoproteins, oncogenes, chemokine receptors, as well as soluble factors, transcripts of proteins and miRNAs involved in angiogenesis or inflammation. This transfer has been shown to influence the metastatic behavior of primary tumors. Moreover, tumor-derived EVs have been shown to influence distant cellular niches, establishing favorable microenvironments that support growth of disseminated cancer cells upon their arrival at these pre-metastatic niches. It is generally accepted that cells release a number of major EV populations with distinct biophysical properties and biological functions. Exosomes, microvesicles, and apoptotic bodies are EV populations most widely studied and characterized. They are discriminated based primarily on their intracellular origin. However, increasing evidence suggests that even within these EV populations various subpopulations may exist. This heterogeneity introduces an extra level of complexity in the study of EV biology and function. For example, EV subpopulations could have unique roles in the intricate biological processes underlying cancer biology. Here, we discuss current knowledge regarding the role of subpopulations of EVs in cancer development and progression and highlight the relevance of EV heterogeneity. The position of tetraspanins and integrins therein will be highlighted. Since addressing EV heterogeneity has become essential for the EV field, current and novel techniques for isolating EV subpopulations will also be discussed. Further dissection of EV heterogeneity will advance our understanding of the critical roles of EVs in health and disease.
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Affiliation(s)
- Eduard Willms
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Carlos Cabañas
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid, Spain.,Department of Microbiology I (Immunology), Faculty of Medicine, Universidad Complutense, Madrid, Spain
| | - Imre Mäger
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.,Institute of Technology, University of Tartu, Tartu, Estonia
| | - Matthew J A Wood
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Pieter Vader
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.,Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht, Netherlands.,Department of Experimental Cardiology, University Medical Center Utrecht, Utrecht, Netherlands
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14
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Suárez H, Gámez-Valero A, Reyes R, López-Martín S, Rodríguez MJ, Carrascosa JL, Cabañas C, Borràs FE, Yáñez-Mó M. A bead-assisted flow cytometry method for the semi-quantitative analysis of Extracellular Vesicles. Sci Rep 2017; 7:11271. [PMID: 28900146 PMCID: PMC5595788 DOI: 10.1038/s41598-017-11249-2] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 08/22/2017] [Indexed: 01/09/2023] Open
Abstract
Most experimental approaches commonly employed for the characterization and quantitation of EVs are time consuming, require of specialized instrumentation and often are rather inaccurate. To circumvent the caveats imposed by EV small size, we used general and specific membrane markers in bead assisted flow cytometry, to provide a semi-quantitative measure of EV content in a given sample. EVs were isolated from in vitro cultured cells-conditioned medium and biological fluids by size exclusion chromatography and coupled to latex beads to allow their detection by standard flow cytometers. Our analyses demonstrate a linear correlation between EV concentration and Mean Fluorescence Intensity values in samples cleared of protein contaminants. Comparison with one of the most widespread method such as NTA, suggests a similar linear range and reliable accuracy to detect saturation. However, although detection of the different biomarkers is feasible when tested on ultracentrifugation-enriched samples, protein contamination impairs quantitation of this type of samples by bead-based flow cytometry. Thus, we provide evidence that bead-assisted flow cytometry method is an accurate and reliable method for the semiquantitative bulk analysis of EVs, which could be easily implemented in most laboratories.
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Affiliation(s)
- Henar Suárez
- Instituto de Investigación Sanitaria La Princesa (IIS-IP), Madrid, Spain.,Departamento de Biología Molecular, UAM, Madrid, Spain.,Centro de Biología Molecular Severo Ochoa, Madrid, Spain
| | - Ana Gámez-Valero
- REMAR-IVECAT Group, Health Science Research Institute Germans Trias i Pujol, Can Ruti Campus, Badalona, Spain.,Department of Pathology, Hospital Universitari and Health Sciences Research Institute Germans Trias i Pujol, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Raquel Reyes
- Centro de Biología Molecular Severo Ochoa, Madrid, Spain.,Departamento de Biología, Facultad de Ciencias, UAM, Madrid, Spain
| | - Soraya López-Martín
- Instituto de Investigación Sanitaria La Princesa (IIS-IP), Madrid, Spain.,Departamento de Biología Molecular, UAM, Madrid, Spain
| | - María Josefa Rodríguez
- Department of Macromolecular Structures, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid, Spain
| | - José L Carrascosa
- Department of Macromolecular Structures, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid, Spain
| | - Carlos Cabañas
- Centro de Biología Molecular Severo Ochoa, Madrid, Spain
| | - Francesc E Borràs
- REMAR-IVECAT Group, Health Science Research Institute Germans Trias i Pujol, Can Ruti Campus, Badalona, Spain. .,Department of Pathology, Hospital Universitari and Health Sciences Research Institute Germans Trias i Pujol, Universitat Autònoma de Barcelona, Barcelona, Spain. .,Nephrology Service, Germans Trias i Pujol University Hospital, Badalona, Spain.
| | - María Yáñez-Mó
- Instituto de Investigación Sanitaria La Princesa (IIS-IP), Madrid, Spain. .,Departamento de Biología Molecular, UAM, Madrid, Spain. .,Centro de Biología Molecular Severo Ochoa, Madrid, Spain.
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15
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Li J, Su Y, Xia W, Qin Y, Humphries MJ, Vestweber D, Cabañas C, Lu C, Springer TA. Conformational equilibria and intrinsic affinities define integrin activation. EMBO J 2017; 36:629-645. [PMID: 28122868 PMCID: PMC5331762 DOI: 10.15252/embj.201695803] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/12/2016] [Accepted: 12/15/2016] [Indexed: 11/25/2022] Open
Abstract
We show that the three conformational states of integrin α5β1 have discrete free energies and define activation by measuring intrinsic affinities for ligand of each state and the equilibria linking them. The 5,000-fold higher affinity of the extended-open state than the bent-closed and extended-closed states demonstrates profound regulation of affinity. Free energy requirements for activation are defined with protein fragments and intact α5β1 On the surface of K562 cells, α5β1 is 99.8% bent-closed. Stabilization of the bent conformation by integrin transmembrane and cytoplasmic domains must be overcome by cellular energy input to stabilize extension. Following extension, headpiece opening is energetically favored. N-glycans and leg domains in each subunit that connect the ligand-binding head to the membrane repel or crowd one another and regulate conformational equilibria in favor of headpiece opening. The results suggest new principles for regulating signaling in the large class of receptors built from extracellular domains in tandem with single-span transmembrane domains.
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Affiliation(s)
- Jing Li
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Yang Su
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Wei Xia
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Yan Qin
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Martin J Humphries
- Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Manchester, UK
| | | | - Carlos Cabañas
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM) and Departamento de Microbiología I Facultad de Medicina UCM, Madrid, Spain
| | - Chafen Lu
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Timothy A Springer
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
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16
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Schläger C, Körner H, Krueger M, Vidoli S, Haberl M, Mielke D, Brylla E, Issekutz T, Cabañas C, Nelson PJ, Ziemssen T, Rohde V, Bechmann I, Lodygin D, Odoardi F, Flügel A. Effector T-cell trafficking between the leptomeninges and the cerebrospinal fluid. Nature 2016; 530:349-53. [PMID: 26863192 DOI: 10.1038/nature16939] [Citation(s) in RCA: 260] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 12/17/2015] [Indexed: 12/18/2022]
Abstract
In multiple sclerosis, brain-reactive T cells invade the central nervous system (CNS) and induce a self-destructive inflammatory process. T-cell infiltrates are not only found within the parenchyma and the meninges, but also in the cerebrospinal fluid (CSF) that bathes the entire CNS tissue. How the T cells reach the CSF, their functionality, and whether they traffic between the CSF and other CNS compartments remains hypothetical. Here we show that effector T cells enter the CSF from the leptomeninges during Lewis rat experimental autoimmune encephalomyelitis (EAE), a model of multiple sclerosis. While moving through the three-dimensional leptomeningeal network of collagen fibres in a random Brownian walk, T cells were flushed from the surface by the flow of the CSF. The detached cells displayed significantly lower activation levels compared to T cells from the leptomeninges and CNS parenchyma. However, they did not represent a specialized non-pathogenic cellular sub-fraction, as their gene expression profile strongly resembled that of tissue-derived T cells and they fully retained their encephalitogenic potential. T-cell detachment from the leptomeninges was counteracted by integrins VLA-4 and LFA-1 binding to their respective ligands produced by resident macrophages. Chemokine signalling via CCR5/CXCR3 and antigenic stimulation of T cells in contact with the leptomeningeal macrophages enforced their adhesiveness. T cells floating in the CSF were able to reattach to the leptomeninges through steps reminiscent of vascular adhesion in CNS blood vessels, and invade the parenchyma. The molecular/cellular conditions for T-cell reattachment were the same as the requirements for detachment from the leptomeningeal milieu. Our data indicate that the leptomeninges represent a checkpoint at which activated T cells are licensed to enter the CNS parenchyma and non-activated T cells are preferentially released into the CSF, from where they can reach areas of antigen availability and tissue damage.
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Affiliation(s)
- Christian Schläger
- Institute of Neuroimmunology, Institute for Multiple Sclerosis Research, University Medical Centre Göttingen, 37073 Göttingen, Germany
| | - Henrike Körner
- Institute of Neuroimmunology, Institute for Multiple Sclerosis Research, University Medical Centre Göttingen, 37073 Göttingen, Germany
| | - Martin Krueger
- Institute of Anatomy, University of Leipzig, 04103 Leipzig, Germany
| | - Stefano Vidoli
- Department of Structural and Geotechnical Engineering, University of Rome La Sapienza, 00185 Rome, Italy
| | - Michael Haberl
- Institute of Neuroimmunology, Institute for Multiple Sclerosis Research, University Medical Centre Göttingen, 37073 Göttingen, Germany
| | - Dorothee Mielke
- Department Neurosurgery, University Medical Centre Göttingen, 37075 Göttingen, Germany
| | - Elke Brylla
- Institute of Anatomy, University of Leipzig, 04103 Leipzig, Germany
| | - Thomas Issekutz
- Division of Immunology, Department of Pediatrics Dalhousie University, Halifax B3H 4R2, Canada
| | - Carlos Cabañas
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa, 28049 Madrid, Spain
| | - Peter J Nelson
- Medical Clinic and Policlinic IV, Ludwig-Maximilians-University of Munich, 80336 Munich, Germany
| | - Tjalf Ziemssen
- Department of Neurology, University Hospital, 01307 Dresden, Germany
| | - Veit Rohde
- Department Neurosurgery, University Medical Centre Göttingen, 37075 Göttingen, Germany
| | - Ingo Bechmann
- Institute of Anatomy, University of Leipzig, 04103 Leipzig, Germany
| | - Dmitri Lodygin
- Institute of Neuroimmunology, Institute for Multiple Sclerosis Research, University Medical Centre Göttingen, 37073 Göttingen, Germany
| | - Francesca Odoardi
- Institute of Neuroimmunology, Institute for Multiple Sclerosis Research, University Medical Centre Göttingen, 37073 Göttingen, Germany
| | - Alexander Flügel
- Institute of Neuroimmunology, Institute for Multiple Sclerosis Research, University Medical Centre Göttingen, 37073 Göttingen, Germany.,Max-Planck-Institute for Experimental Medicine, 37075 Göttingen, Germany
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Dios-Esponera A, Isern de Val S, Sevilla-Movilla S, García-Verdugo R, García-Bernal D, Arellano-Sánchez N, Cabañas C, Teixidó J. Positive and negative regulation by SLP-76/ADAP and Pyk2 of chemokine-stimulated T-lymphocyte adhesion mediated by integrin α4β1. Mol Biol Cell 2015. [PMID: 26202465 PMCID: PMC4569313 DOI: 10.1091/mbc.e14-07-1246] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Stimulation by chemokines of integrin α4β1-dependent T-lymphocyte adhesion is a crucial step for lymphocyte trafficking. The adaptor Vav1 is required for chemokine-activated T-cell adhesion mediated by α4β1. Conceivably, proteins associating with Vav1 could potentially modulate this adhesion. Correlating with activation by the chemokine CXCL12 of T-lymphocyte attachment to α4β1 ligands, a transient stimulation in the association of Vav1 with SLP-76, Pyk2, and ADAP was observed. Using T-cells depleted for SLP-76, ADAP, or Pyk2, or expressing Pyk2 kinase-inactive forms, we show that SLP-76 and ADAP stimulate chemokine-activated, α4β1-mediated adhesion, whereas Pyk2 opposes T-cell attachment. While CXCL12-promoted generation of high-affinity α4β1 is independent of SLP-76, ADAP, and Pyk2, the strength of α4β1-VCAM-1 interaction and cell spreading on VCAM-1 are targets of regulation by these three proteins. GTPase assays, expression of activated or dominant-negative Rac1, or combined ADAP and Pyk2 silencing indicated that Rac1 activation by CXCL12 is a common mediator response in SLP-76-, ADAP-, and Pyk2-regulated cell adhesion involving α4β1. Our data strongly suggest that chemokine-stimulated associations between Vav1, SLP-76, and ADAP facilitate Rac1 activation and α4β1-mediated adhesion, whereas Pyk2 opposes this adhesion by limiting Rac1 activation.
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Affiliation(s)
- Ana Dios-Esponera
- Centro de Investigaciones Biológicas (CSIC), Department of Cellular and Molecular Medicine, 28040 Madrid, Spain
| | - Soledad Isern de Val
- Centro de Investigaciones Biológicas (CSIC), Department of Cellular and Molecular Medicine, 28040 Madrid, Spain
| | - Silvia Sevilla-Movilla
- Centro de Investigaciones Biológicas (CSIC), Department of Cellular and Molecular Medicine, 28040 Madrid, Spain
| | - Rosa García-Verdugo
- Centro de Investigaciones Biológicas (CSIC), Department of Cellular and Molecular Medicine, 28040 Madrid, Spain
| | - David García-Bernal
- Centro de Investigaciones Biológicas (CSIC), Department of Cellular and Molecular Medicine, 28040 Madrid, Spain
| | - Nohemí Arellano-Sánchez
- Centro de Investigaciones Biológicas (CSIC), Department of Cellular and Molecular Medicine, 28040 Madrid, Spain
| | - Carlos Cabañas
- Centro de Biología Molecular (CSIC), Department of Cell Biology and Immunology, Cantoblanco, 28049 Madrid, Spain
| | - Joaquin Teixidó
- Centro de Investigaciones Biológicas (CSIC), Department of Cellular and Molecular Medicine, 28040 Madrid, Spain
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Reyes R, Monjas A, Yánez-Mó M, Cardeñes B, Morlino G, Gilsanz A, Machado-Pineda Y, Lafuente E, Monk P, Sánchez-Madrid F, Cabañas C. Different states of integrin LFA-1 aggregation are controlled through its association with tetraspanin CD9. Biochim Biophys Acta 2015; 1853:2464-80. [PMID: 26003300 DOI: 10.1016/j.bbamcr.2015.05.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 05/11/2015] [Accepted: 05/14/2015] [Indexed: 12/19/2022]
Abstract
The tetraspanin CD9 has been shown to interact with different members of the β1 and β3 subfamilies of integrins, regulating through these interactions cell adhesion, migration and signaling. Based on confocal microscopy co-localization and on co-immunoprecipitation results, we report here that CD9 associates with the β2 integrin LFA-1 in different types of leukocytes including T, B and monocytic cells. This association is resistant to stringent solubilization conditions which, together with data from chemical crosslinking, in situ Proximity Ligation Assays and pull-down experiments, suggest a primary/direct type of interaction mediated by the Large Extracellular Loop of the tetraspanin. CD9 exerts inhibitory effects on the adhesive function of LFA-1 and on LFA-1-dependent leukocyte cytotoxic activity. The mechanism responsible for this negative regulation exerted by CD9 on LFA-1 adhesion does not involve changes in the affinity state of this integrin but seems to be related to alterations in its state of aggregation.
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Affiliation(s)
- Raquel Reyes
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), 28049 Madrid, Spain; Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Alicia Monjas
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), 28049 Madrid, Spain
| | - María Yánez-Mó
- Unidad de Investigación, Hospital Santa Cristina, Instituto de Investigación Sanitaria La Princesa (IIS-IP), 28006 Madrid, Spain; Departamento de Biología Molecular, Facultad de Ciencias, Universidad Autonoma de Madrid, 28049 Madrid, Spain
| | - Beatriz Cardeñes
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), 28049 Madrid, Spain
| | - Giulia Morlino
- Departamento de Biología Vascular e Inflamación, Centro Nacional de Investigaciones Cardiovasculares (CNIC), 28029 Madrid, Spain
| | - Alvaro Gilsanz
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), 28049 Madrid, Spain
| | | | - Esther Lafuente
- Departamento de Microbiología I, Area de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Peter Monk
- University of Sheffield Medical School, Sheffield S10 2RX, UK
| | - Francisco Sánchez-Madrid
- Departamento de Biología Vascular e Inflamación, Centro Nacional de Investigaciones Cardiovasculares (CNIC), 28029 Madrid, Spain; Servicio de Inmunología, Hospital de la Princesa, Instituto de Investigación Sanitaria La Princesa (IIS-IP), 28006 Madrid, Spain
| | - Carlos Cabañas
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), 28049 Madrid, Spain; Departamento de Microbiología I, Area de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain.
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19
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Sandoval P, Jiménez-Heffernan JA, Rynne-Vidal Á, Pérez-Lozano ML, Gilsanz Á, Ruiz-Carpio V, Reyes R, García-Bordas J, Stamatakis K, Dotor J, Majano PL, Fresno M, Cabañas C, López-Cabrera M. Carcinoma-associated fibroblasts derive from mesothelial cells via mesothelial-to-mesenchymal transition in peritoneal metastasis. J Pathol 2014; 231:517-31. [PMID: 24114721 DOI: 10.1002/path.4281] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 09/20/2013] [Accepted: 09/24/2013] [Indexed: 12/29/2022]
Abstract
Peritoneal dissemination is a frequent metastatic route for cancers of the ovary and gastrointestinal tract. Tumour cells metastasize by attaching to and invading through the mesothelial cell (MC) monolayer that lines the peritoneal cavity. Metastases are influenced by carcinoma-associated fibroblasts (CAFs), a cell population that derives from different sources. Hence, we investigated whether MCs, through mesothelial-mesenchymal transition (MMT), were a source of CAFs during peritoneal carcinomatosis and whether MMT affected the adhesion and invasion of tumour cells. Biopsies from patients with peritoneal dissemination revealed the presence of myofibroblasts expressing mesothelial markers in the proximity of carcinoma implants. Prominent new vessel formation was observed in the peritoneal areas harbouring tumour cells when compared with tumour-free regions. The use of a mouse model of peritoneal dissemination confirmed the myofibroblast conversion of MCs and the increase in angiogenesis at places of tumour implants. Treatment of omentum MCs with conditioned media from carcinoma cell cultures resulted in phenotype changes reminiscent of MMT. Adhesion experiments demonstrated that MMT enhanced the binding of cancer cells to MCs in a β1-integrin-dependent manner. Scanning electron microscopy imaging showed that the enhanced adhesion was mostly due to increased cell-cell interaction and not to a mere matrix exposure. Invasion assays suggested a reciprocal stimulation of the invasive capacity of tumour cells and MCs. Our results demonstrate that CAFs can derive from mesothelial cells during peritoneal metastasis. We suggest that MMT renders the peritoneum more receptive for tumour cell attachment/invasion and contributes to secondary tumour growth by promoting its vascularization.
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Affiliation(s)
- Pilar Sandoval
- Centro de Biología Molecular-Severo Ochoa, CSIC-UAM, Cantoblanco, Madrid, Spain
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20
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21
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Pérez-Rivero G, Cascio G, Soriano SF, Sanz ÁG, de Guinoa JS, Rodríguez-Frade JM, Gomariz RP, Holgado BL, Cabañas C, Carrasco YR, Stein JV, Mellado M. Janus kinases 1 and 2 regulate chemokine-mediated integrin activation and naïve T-cell homing. Eur J Immunol 2013; 43:1745-57. [PMID: 23526587 DOI: 10.1002/eji.201243178] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 02/08/2013] [Accepted: 03/19/2013] [Indexed: 12/21/2022]
Abstract
Janus kinases (JAKs) are central signaling molecules in cytokine receptor cascades. Although they have also been implicated in chemokine receptor signaling, this function continues to be debated. To address this issue, we established a nucleofection model in primary, nonactivated mouse T lymphocytes to silence JAK expression and to evaluate the ability of these cells to home to lymph nodes. Reduced JAK1 and JAK2 expression impaired naïve T-cell migration in response to gradients of the chemokines CXCL12 and CCL21. In vivo homing of JAK1/JAK2-deficient cells to lymph nodes decreased, whereas intranodal localization and motility were unaffected. JAK1 and JAK2 defects altered CXCL12- and CCL21-triggered ezrin/radixin/moesin (ERM) dephosphorylation and F-actin polymerization, as well as activation of lymphocyte function-associated Ag-1 and very late Ag-4 integrins. As a result, the cells did not adhere firmly to integrin substrates in response to these chemokines. The results demonstrate that JAK1/JAK2 participate in chemokine-induced integrin activation and might be considered a target for modulation of immune cell extravasation and therefore, control of inflammatory reactions.
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Affiliation(s)
- Gema Pérez-Rivero
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, Campus de Cantoblanco, Madrid, Spain
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22
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Medraño-Fernandez I, Reyes R, Olazabal I, Rodriguez E, Sanchez-Madrid F, Boussiotis VA, Reche PA, Cabañas C, Lafuente EM. RIAM (Rap1-interacting adaptor molecule) regulates complement-dependent phagocytosis. Cell Mol Life Sci 2013; 70:2395-410. [PMID: 23420480 DOI: 10.1007/s00018-013-1268-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 12/24/2012] [Accepted: 01/14/2013] [Indexed: 10/27/2022]
Abstract
Phagocytosis mediated by the complement receptor CR3 (also known as integrin αMß2 or Mac-1) is regulated by the recruitment of talin to the cytoplasmic tail of the ß2 integrin subunit. Talin recruitment to this integrin is dependent on Rap1 activation. However, the mechanism by which Rap1 regulates this event and CR3-dependent phagocytosis remains largely unknown. In the present work, we examined the role of the Rap1 effector RIAM, a talin-binding protein, in the regulation of complement-mediated phagocytosis. Using the human myeloid cell lines HL-60 and THP-1, we determined that knockdown of RIAM impaired αMß2 integrin affinity changes induced by stimuli fMLP and LPS. Phagocytosis of complement-opsonized RBC particles, but not of IgG-opsonized RBC particles, was impaired in RIAM knockdown cells. Rap1 activation via EPAC induced by 8-pCPT-2'-O-Me-cAMP resulted in an increase of complement-mediated phagocytosis that was abrogated by knockdown of RIAM in HL-60 and THP-1 cell lines and in macrophages derived from primary monocytes. Furthermore, recruitment of talin to ß2 integrin during complement-mediated phagocytosis was reduced in RIAM knockdown cells. These results indicate that RIAM is a critical component of the phagocytosis machinery downstream of Rap1 and mediates its function by recruiting talin to the phagocytic complement receptors.
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Affiliation(s)
- Iria Medraño-Fernandez
- Departamento de Microbiología I, Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
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23
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Sánchez-Martín L, Sánchez-Mateos P, Cabañas C. CXCR7 impact on CXCL12 biology and disease. Trends Mol Med 2012; 19:12-22. [PMID: 23153575 DOI: 10.1016/j.molmed.2012.10.004] [Citation(s) in RCA: 141] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 09/20/2012] [Accepted: 10/11/2012] [Indexed: 12/14/2022]
Abstract
It is known that the chemokine receptor CXCR7 (RDC1) can be engaged by both chemokines CXCL12 (SDF-1) and CXCL11 (I-TAC), but the exact expression pattern and function of CXCR7 is controversial. CXCR7 expression seems to be enhanced during pathological inflammation and tumor development, and emerging data suggest this receptor is an attractive therapeutic target for autoimmune diseases and cancer. CXCR7/CXCR4 heterodimerization, β-arrestin-mediated signaling, and modulation of CXCL12 responsiveness by CXCR7 suggest that the monogamous CXCR4/CXCL12 signaling axis is an oversimplified model that needs to be revisited. Consequently, research into CXCR7 biology is of great interest and further studies are warranted. This review summarizes recent findings about the CXCR7 receptor and analyses its impact on understanding the roles of CXCL12 biology in health and disease.
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Affiliation(s)
- Lorena Sánchez-Martín
- Departamento de Biología Celular e Inmunología, Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Madrid 28049, Spain.
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24
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Rossi E, Langa C, Gilsanz A, Blanco FJ, Ayllón J, Villar E, Botella LM, Cabañas C, Shaw M, Bernabeu C. Characterization of chicken endoglin, a member of the zona pellucida family of proteins, and its tissue expression. Gene 2012; 491:31-9. [DOI: 10.1016/j.gene.2011.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2011] [Revised: 09/08/2011] [Accepted: 09/14/2011] [Indexed: 10/17/2022]
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Yáñez-Mó M, Gutiérrez-López MD, Cabañas C. Functional interplay between tetraspanins and proteases. Cell Mol Life Sci 2011; 68:3323-35. [PMID: 21687991 DOI: 10.1007/s00018-011-0746-y] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Revised: 05/04/2011] [Accepted: 05/30/2011] [Indexed: 12/14/2022]
Abstract
Several recent publications have described examples of physical and functional interations between tetraspanins and specific membrane proteases belonging to the TM-MMP and α-(ADAMs) and γ-secretases families. Collectively, these examples constitute an emerging body of evidence supporting the notion that tetraspanin-enriched microdomains (TEMs) represent functional platforms for the regulation of key cellular processes including the release of surface protein ectodomains ("shedding"), regulated intramembrane proteolysis ("RIPing") and matrix degradation and assembly. These cellular processes in turn play a crucial role in an array of physiological and pathological phenomena. Thus, TEMs may represent new therapeutical targets that may simultaneously affect the proteolytic activity of different enzymes and their substrates. Agonistic or antagonistic antibodies and blocking soluble peptides corresponding to tetraspanin functional regions may offer new opportunities in the treatment of pathologies such as chronic inflammation, cancer, or Alzheimer's disease. In this review article, we will discuss all these aspects of functional regulation of protease activities by tetraspanins.
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Affiliation(s)
- María Yáñez-Mó
- Servicio de Inmunología, Hospital de la Princesa, Instituto de Investigación Sanitaria Princesa, 28006 Madrid, Spain.
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26
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Hernández-Varas P, Coló GP, Bartolomé RA, Paterson A, Medraño-Fernández I, Arellano-Sánchez N, Cabañas C, Sánchez-Mateos P, Lafuente EM, Boussiotis VA, Strömblad S, Teixidó J. Rap1-GTP-interacting adaptor molecule (RIAM) protein controls invasion and growth of melanoma cells. J Biol Chem 2011; 286:18492-504. [PMID: 21454517 DOI: 10.1074/jbc.m110.189811] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The Mig-10/RIAM/lamellipodin (MRL) family member Rap1-GTP-interacting adaptor molecule (RIAM) interacts with active Rap1, a small GTPase that is frequently activated in tumors such as melanoma and prostate cancer. We show here that RIAM is expressed in metastatic human melanoma cells and that both RIAM and Rap1 are required for BLM melanoma cell invasion. RIAM silencing in melanoma cells led to inhibition of tumor growth and to delayed metastasis in a severe combined immunodeficiency xenograft model. Defective invasion of RIAM-silenced melanoma cells arose from impairment in persistent cell migration directionality, which was associated with deficient activation of a Vav2-RhoA-ROCK-myosin light chain pathway. Expression of constitutively active Vav2 and RhoA in cells depleted for RIAM partially rescued their invasion, indicating that Vav2 and RhoA mediate RIAM function. These results suggest that inhibition of cell invasion in RIAM-silenced melanoma cells is likely based on altered cell contractility and cell polarization. Furthermore, we show that RIAM depletion reduces β1 integrin-dependent melanoma cell adhesion, which correlates with decreased activation of both Erk1/2 MAPK and phosphatidylinositol 3-kinase, two central molecules controlling cell growth and cell survival. In addition to causing inhibition of cell proliferation, RIAM silencing led to higher susceptibility to cell apoptosis. Together, these data suggest that defective activation of these kinases in RIAM-silenced cells could account for inhibition of melanoma cell growth and that RIAM might contribute to the dissemination of melanoma cells.
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Affiliation(s)
- Pablo Hernández-Varas
- Department of Cellular and Molecular Medicine, Centro de Investigaciones Biológicas, 28040 Madrid, Spain
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27
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Ovalle S, Gutiérrez-López MD, Olmo N, Turnay J, Lizarbe MA, Majano P, Molina-Jiménez F, López-Cabrera M, Yáñez-Mó M, Sánchez-Madrid F, Cabañas C. The tetraspanin CD9 inhibits the proliferation and tumorigenicity of human colon carcinoma cells. Int J Cancer 2007; 121:2140-52. [PMID: 17582603 DOI: 10.1002/ijc.22902] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The implication of the tetraspanin CD9 in cancer has received much recent attention and an inverse correlation between CD9 expression and the metastatic potential and cancer survival rate has been established for different tumor types. In contrast to the well-established role of CD9 in metastasis, very little is known about the involvement of this tetraspanin in the process of development of primary tumors. In the present study, we present evidence on the implication of CD9 in colon carcinoma tumorigenesis. We report here that ectopic expression of CD9 in colon carcinoma cells results in enhanced integrin-dependent adhesion and inhibition of cell growth. Consistently with these effects, treatment of these cells with anti-CD9-specific antibodies resulted in (i) increased beta1 integrin-mediated cell adhesion through a mechanism involving clustering of integrin molecules rather than altered affinity; (ii) induction of morphological changes characterized by the acquisition of an elongated cell phenotype; (iii) inhibition of cell proliferation with no significant effect on cell survival; (iv) increased expression of membrane TNF-alpha, and finally (v) inhibition of the in vivo tumorigenic capacity in nude mice. In addition, through the use of selective blockers of TNF-alpha, we have demonstrated that this cytokine partly mediates the antiproliferative effects of CD9. These results clearly establish for the first time a role for CD9 in the tumorigenic process.
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Affiliation(s)
- Susana Ovalle
- Instituto de Farmacología y Toxicología (CSIC-UCM), Facultad de Medicina, Universidad Complutense, Madrid, Spain
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28
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Maqueda A, Moyano JV, Gutiérrez-López MD, Ovalle S, Rodríguez-Frade JM, Cabañas C, Garcia-Pardo A. Activation pathways of α4β1 integrin leading to distinct T-cell cytoskeleton reorganization, Rac1 regulation and Pyk2 phosphorylation. J Cell Physiol 2006; 207:746-56. [PMID: 16514607 DOI: 10.1002/jcp.20624] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Alpha4beta1 integrin is highly expressed in lymphocytes and is essential in hematopoiesis, extravasation, and the inflammatory response. Alpha4beta1 can be activated by intracellular signals elicited upon T-cell activation by phorbol esters, CD3 crosslinking, or certain chemokine/receptor interactions (inside-out activation). Divalent cations or certain anti-beta1 mAbs (i.e., TS2/16) can also bind and activate integrins directly (outside-in activation). In both cases, activation results in increased adhesion and/or affinity for ligands. It is not known if these various stimuli produce the same or different post-adhesion events. To address this, we have studied the cytoskeleton organization and intracellular signaling following activation of 41 in Jurkat cells and in human T-lymphoblasts. Treatment with Mn2+, alpha-CD3 mAb or the chemokine SDF-1alpha followed by attachment to the fibronectin fragment H89 or the endothelial molecule VCAM-1 (alpha4beta1 ligands), resulted in cell polarization and migration. In contrast, activation with PMA or TS2/16 induced cell spreading and strong adherence. Video microscopy and Transwell analyses confirmed these results, which correlated with different resistance to detachment under flow. Activation of the small GTPase RhoA or transfection with the constitutively active mutants V14RhoA or V12Rac1, abolished the alpha4beta1-induced cell polarization but did not affect cell spreading. Moreover, Rac1 activity was distinctly modulated by agents that induce a polarized or spread phenotype. The tyrosine kinase Pyk2 was highly phosphorylated upon induction of cell polarity but not during cell spreading. These results reveal novel properties of alpha4beta1 integrin, namely the ability to trigger two types of T-cell cytoskeletal response with different signaling requirements.
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Affiliation(s)
- Alfredo Maqueda
- Departamento de Inmunología, Centro de Investigaciones Biológicas, CSIC, Madrid, Spain
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de la Fuente H, Mittelbrunn M, Sánchez-Martín L, Vicente-Manzanares M, Lamana A, Pardi R, Cabañas C, Sánchez-Madrid F. Synaptic clusters of MHC class II molecules induced on DCs by adhesion molecule-mediated initial T-cell scanning. Mol Biol Cell 2005; 16:3314-22. [PMID: 15872088 PMCID: PMC1165413 DOI: 10.1091/mbc.e05-01-0005] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Initial adhesive contacts between T lymphocytes and dendritic cells (DCs) facilitate recognition of peptide-MHC complexes by the TCR. In this report, we studied the dynamic behavior of adhesion and Ag receptors on DCs during initial contacts with T-cells. Adhesion molecules LFA-1- and ICAM-1,3-GFP as well as MHC class II-GFP molecules were very rapidly concentrated at the DC contact area. Binding of ICAM-3, and ICAM-1 to a lesser extent, to LFA-1 expressed by mature but not immature DC, induced MHC-II clustering into the immune synapse. Also, ICAM-3 binding to DC induced the activation of the Vav1-Rac1 axis, a regulatory pathway involved in actin cytoskeleton reorganization, which was essential for MHC-II clustering on DCs. Our results support a model in which ICAM-mediated MHC-II clustering on DC constitutes a priming mechanism to enhance antigen presentation to T-cells.
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Affiliation(s)
- Hortensia de la Fuente
- Servicio de Inmunología, Hospital de la Princesa, Universidad Autónoma de Madrid, 28006 Madrid, Spain
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30
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Barreiro O, Yáñez-Mó M, Sala-Valdés M, Gutiérrez-López MD, Ovalle S, Higginbottom A, Monk PN, Cabañas C, Sánchez-Madrid F. Endothelial tetraspanin microdomains regulate leukocyte firm adhesion during extravasation. Blood 2004; 105:2852-61. [PMID: 15591117 DOI: 10.1182/blood-2004-09-3606] [Citation(s) in RCA: 162] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Tetraspanins associate with several transmembrane proteins forming microdomains involved in intercellular adhesion and migration. Here, we show that endothelial tetraspanins relocalize to the contact site with transmigrating leukocytes and associate laterally with both intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1). Alteration of endothelial tetraspanin microdomains by CD9-large extracellular loop (LEL)-glutathione S-transferase (GST) peptides or CD9/CD151 siRNA oligonucleotides interfered with ICAM-1 and VCAM-1 function, preventing lymphocyte transendothelial migration and increasing lymphocyte detachment under shear flow. Heterotypic intercellular adhesion mediated by VCAM-1 or ICAM-1 was augmented when expressed exogenously in the appropriate tetraspanin environment. Therefore, tetraspanin microdomains have a crucial role in the proper adhesive function of ICAM-1 and VCAM-1 during leukocyte adhesion and transendothelial migration.
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Affiliation(s)
- Olga Barreiro
- Servicio de Inmunología, Hospital de la Princesa, Universidad Autónoma de Madrid, C/Diego de León 62, 28006 Madrid, Spain
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31
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Molina A, Ubeda M, Escribese MM, García-Bermejo L, Sancho D, Pérez de Lema G, Liaño F, Cabañas C, Sánchez-Madrid F, Mampaso F. Renal ischemia/reperfusion injury: functional tissue preservation by anti-activated {beta}1 integrin therapy. J Am Soc Nephrol 2004; 16:374-82. [PMID: 15590758 DOI: 10.1681/asn.2004070528] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Renal ischemia/reperfusion injury (IRI) is an important cause of acute renal failure. Cellular and molecular responses of the kidney to IRI are complex and not fully understood. beta1 integrins localize to the basal surface of tubular epithelium interacting with extracellular matrix components of the basal membrane, including collagen IV. Whether preservation of tubular epithelium integrity could be a therapeutic approach for IRI was assessed. The effects of HUTS-21 mAb administration, which recognizes an activation-dependent epitope of beta1 integrins, in a rat model of IRI were investigated. Preischemic HUTS-21 administration resulted in the preservation of renal functional and histopathologic parameters. Analyses of activated beta1 integrins expression and focal adhesion kinase phosphorylation suggest that its deactivation after IRI was prevented by HUTS-21 treatment. Moreover, HUTS-21 impaired the inflammatory response in vivo, as indicated by inhibition of proinflammatory mediators and the absence of infiltrating cells. Ex vivo adhesion assays using reperfused kidneys revealed that HUTS-21 induced a significant increase of epithelial cell attachment to collagen IV. In conclusion, the data provide evidence that HUTS-21 has a protective effect in renal IRI, preventing tubular epithelial cell detachment by preserving activated beta1 integrins functions.
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Affiliation(s)
- Ana Molina
- Hospital Ramón y Cajal, Departamento de Patología, Carretera de Colmenar, Km 9.1, 28034 Madrid, Spain
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32
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Sánchez-Sánchez N, Riol-Blanco L, de la Rosa G, Puig-Kröger A, García-Bordas J, Martín D, Longo N, Cuadrado A, Cabañas C, Corbí AL, Sánchez-Mateos P, Rodríguez-Fernández JL. Chemokine receptor CCR7 induces intracellular signaling that inhibits apoptosis of mature dendritic cells. Blood 2004; 104:619-25. [PMID: 15059845 DOI: 10.1182/blood-2003-11-3943] [Citation(s) in RCA: 136] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Acquisition of CCR7 expression is an important phenotype change during dendritic cell (DC) maturation that endows these cells with the capability to migrate to lymph nodes. We have analyzed the possible role of CCR7 on the regulation of the survival of DCs. Stimulation with CCR7 ligands CCL19 and CCL21 inhibits apoptotic hallmarks of serum-deprived DCs, including membrane phosphatidylserine exposure, loss of mitochondria membrane potential, increased membrane blebs, and nuclear changes. Both chemokines induced a rapid activation of phosphatidylinositol 3'-kinase/Akt1 (PI3K/Akt1), with a prolonged and persistent activation of Akt1. Interference with PI3K, Gi, or G protein betagamma subunits abrogated the effects of the chemokines on Akt1 activation and on survival. In contrast, inhibition of extracellular signal-related kinase 1/2 (Erk1/2), p38, or c-Jun N-terminal kinase (JNK) was ineffective. Nuclear factor-kappaB (NFkappaB) was involved in the antiapoptotic effects of chemokines because inhibition of NFkappaB blunted the effects of CCL19 and CCL21 on survival. Furthermore, chemokines induced down-regulation of the NFkappaB inhibitor IkappaB, an increase of NFkappaB DNA-binding capability, and translocation of the NFkappaB subunit p65 to the nucleus. In summary, in addition to its well-established role in chemotaxis, we show that CCR7 also induces antiapoptotic signaling in mature DCs.
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Affiliation(s)
- Noelia Sánchez-Sánchez
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
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33
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Sánchez-Martín L, Sánchez-Sánchez N, Gutiérrez-López MD, Rojo AI, Vicente-Manzanares M, Pérez-Alvarez MJ, Sánchez-Mateos P, Bustelo XR, Cuadrado A, Sánchez-Madrid F, Rodríguez-Fernández JL, Cabañas C. Signaling through the Leukocyte Integrin LFA-1 in T Cells Induces a Transient Activation of Rac-1 That Is Regulated by Vav and PI3K/Akt-1. J Biol Chem 2004; 279:16194-205. [PMID: 14960575 DOI: 10.1074/jbc.m400905200] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Integrin LFA-1 is a receptor that is able to transmit multiple intracellular signals in leukocytes. Herein we show that LFA-1 induces a potent and transient increase in the activity of the small GTPase Rac-1 in T cells. Maximal Rac-1 activity peaked 10-15 min after LFA-1 stimulation and rapidly declined to basal levels at longer times. We have identified Vav, a guanine nucleotide exchange factor for Rac-1, and PI3K/Akt, as regulators of the activation and inactivation phases of the activity of Rac-1, respectively, in the context of LFA-1 signaling based on the following experimental evidence: (i) LFA-1 induced activation of Vav and PI3K/Akt with kinetics consistent with a regulatory role for these molecules on Rac-1, (ii) overexpression of a constitutively active Vav mutant induces activation of Rac independently of LFA-1 stimulation whereas overexpression of a dominant-negative Vav mutant blocks LFA-1-mediated Rac activation, (iii) pharmacological inhibition of PI3K/Akt prevented the fall in the activity of Rac-1 after its initial activation but had no effect on Vav activity, and (iv) overexpression of a dominant-negative or a constitutively active Akt-1 induced or inhibited, respectively, Rac-1 activity. Finally, we show that T cells with a sustained Rac activity have impaired capacity to elongate onto ICAM-1. These results demonstrate that down-regulation of the activity of this GTPase is a requirement for the regulation of T cell morphology and motility and highlight the importance of temporal regulation of the signaling triggered from this integrin.
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Affiliation(s)
- Lorena Sánchez-Martín
- Instituto de Farmacología y Toxicología (CSIC-UCM), Facultad de Medicina UCM, Madrid 28040, Spain
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34
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Torres PS, Zapata DA, Pacheco-Castro A, Rodríguez-Fernández JL, Cabañas C, Regueiro JR. Contribution of CD3 gamma to TCR regulation and signaling in human mature T lymphocytes. Int Immunol 2002; 14:1357-67. [PMID: 12407027 DOI: 10.1093/intimm/dxf095] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
CD3 proteins may have redundant as well as specific contributions to the intracellular propagation and final effector responses of TCR-mediated signals at different checkpoints during T cell differentiation. We report here on the participation of CD3 gamma in the activation and effector function of human mature T lymphocytes at the antigen recognition checkpoint. Following TCR-CD3 engagement of human CD3 gamma-deficient T cell lines, and despite their lower TCR-CD3 surface levels compared to normal controls, mature T cell responses such as protein tyrosine phosphorylation and the regulation of expression of several cell surface molecules, including the TCR-CD3 itself, were either normal or only slightly affected. In contrast, other physiological responses like the specific adhesion and concomitant cell polarization on ICAM-1-coated dishes were selectively defective, and activation-induced cell death was increased. Our data indicate that CD3 gamma contributes essential specialized signaling functions to certain mature T cell responses. Failure to generate appropriate interactions may abort cytoskeleton reorganization and initiate an apoptotic response.
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Affiliation(s)
- Pilar S Torres
- Inmunología, Facultad de Medicina, Universidad Complutense, 28040 Madrid, Spain
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35
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Rodríguez-Fernández JL, Sánchez-Martín L, de Frutos CA, Sancho D, Robinson M, Sánchez-Madrid F, Cabañas C. LFA-1 integrin and the microtubular cytoskeleton are involved in the Ca(2)(+)-mediated regulation of the activity of the tyrosine kinase PYK2 in T cells. J Leukoc Biol 2002; 71:520-30. [PMID: 11867690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
Lymphocyte function-associated antigen (LFA-1) is a member of the beta2 family of integrins that is selectively expressed on leukocytes. Herein, we show that Ca(2)(+) mobilizing agents A23187, thapsigargin, and ionomycin induce an increase in adhesion to the LFA-1 ligand intercellular adhesion molecule-1 (ICAM-1) and activation and redistribution of the proline-rich tyrosine kinase-2 (PYK2) to the microtubule-organizing center (MTOC) in T-lymphoblasts. These effects are similar to those observed upon direct induction of activation of LFA-1 with the stimulatory mAb KIM-127. Most importantly, Ca(2)(+) mobilization did not induce activation of PYK2 when the LFA-1/ICAM-1 interaction was prevented with function-blocking mAb, implying that the Ca(2)(+)-induced activation of PYK2 requires integrin engagement. Furthermore, pretreatment of the cells with the Ca(2)(+) chelator EGTA, which depletes the intracellular Ca(2)(+), inhibited the effects of mAb KIM-127 on cell morphology and PYK2 activation. This inhibition with EGTA was not reversed by cross-linking integrin LFA-1 with specific antibodies, indicating that Ca(2)(+) exerts its effects through a target downstream of this integrin. In this regard, immunofluorescence and Western blot analysis showed that Ca(2)(+) chelators affect the organization of the microtubular cytoskeleton and the localization of PYK2 to the MTOC area, suggesting that these agents could inhibit the activation of PYK2 by interfering with the microtubular network of T cells. Taken together, our results demonstrate for the first time an important role for the integrin LFA-1 and the microtubular cytoskeleton in the Ca(2)(+)-mediated activation of PYK2 in T-lymphocytes.
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Affiliation(s)
- José Luis Rodríguez-Fernández
- Instituto de Farmacología y Toxicología (Centro Mixto CSIC-UCM), Facultad de Medicina, Universidad Complutense, Pabellón III, 28040 Madrid, Spain
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36
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Rodríguez‐Fernández JL, Sánchez‐Martín L, de Frutos CA, Sancho D, Robinson M, Sánchez‐Madrid F, Cabañas C. LFA‐1 integrin and the microtubular cytoskeleton are involved in the Ca
2
+
‐mediated regulation of the activity of the tyrosine kinase PYK2 in T cells. J Leukoc Biol 2002. [DOI: 10.1189/jlb.71.3.520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- José Luis Rodríguez‐Fernández
- Instituto de Farmacología y Toxicología (Centro Mixto CSIC‐UCM), Facultad de Medicina, Universidad Complutense, Madrid, Spain
| | - Lorena Sánchez‐Martín
- Instituto de Farmacología y Toxicología (Centro Mixto CSIC‐UCM), Facultad de Medicina, Universidad Complutense, Madrid, Spain
| | - Cristina Alvarez de Frutos
- Instituto de Farmacología y Toxicología (Centro Mixto CSIC‐UCM), Facultad de Medicina, Universidad Complutense, Madrid, Spain
| | - David Sancho
- Servicio de Inmunología, Hospital de la Princesa, Madrid, Spain; and
| | | | | | - Carlos Cabañas
- Instituto de Farmacología y Toxicología (Centro Mixto CSIC‐UCM), Facultad de Medicina, Universidad Complutense, Madrid, Spain
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37
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Rodríguez-Fernández JL, Sánchez-Martín L, Rey M, Vicente-Manzanares M, Narumiya S, Teixidó J, Sánchez-Madrid F, Cabañas C. Rho and Rho-associated kinase modulate the tyrosine kinase PYK2 in T-cells through regulation of the activity of the integrin LFA-1. J Biol Chem 2001; 276:40518-27. [PMID: 11489881 DOI: 10.1074/jbc.m102896200] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We have examined the role of the small GTPase Rho and its downstream effector, the Rho-associated kinase (ROCK), in the control of the adhesive and signaling function of the lymphocyte function-associated antigen-1 (LFA-1) integrin in human T-lymphocytes. Inhibition of Rho (either by treatment with C3-exoenzyme or transfection with a dominant-negative form of Rho (N19Rho)) or ROCK (by treatment with Y-27632) results in the following: (a) partial disorganization and aggregation of cortical filamentous actin (F-actin); (b) induction of LFA-1-mediated cellular adhesion to the LFA-1 ligand intercellular adhesion molecule-1 (ICAM-1) through a mechanism involving clustering of LFA-1 molecules, rather than alterations in the level of expression or in the affinity state of this integrin; and (c) induction of cellular polarization and activation of the tyrosine kinase PYK2. Transfection of T-cells with a constitutively active form of Rho (V14Rho) blocks the clustering of LFA-1 on the membrane and the LFA-1-mediated activation of PYK2. Importantly, the activation of PYK2 caused by inhibition of Rho or ROCK takes place only when the T-cells are plated onto ICAM-1 but not when they are either prevented from interacting with ICAM-1 with anti-LFA-1 blocking antibodies or when they are plated on the nonspecific poly-l-lysine substrate. These results indicate that the small GTPase Rho regulates the tyrosine kinase PYK2 in T-cells through the F-actin-mediated control of the activity of the integrin LFA-1. These findings represent a novel paradigm for the regulation of the activity of a cytoplasmic tyrosine kinase by the small GTPase Rho.
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Affiliation(s)
- J L Rodríguez-Fernández
- Instituto de Farmacología y Toxicología CSIC, Facultad de Medicina, Universidad Complutense, 28040 Madrid, Spain
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38
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Hidalgo A, Sanz-Rodríguez F, Rodríguez-Fernández JL, Albella B, Blaya C, Wright N, Cabañas C, Prósper F, Gutierrez-Ramos JC, Teixidó J. Chemokine stromal cell-derived factor-1alpha modulates VLA-4 integrin-dependent adhesion to fibronectin and VCAM-1 on bone marrow hematopoietic progenitor cells. Exp Hematol 2001; 29:345-55. [PMID: 11274763 DOI: 10.1016/s0301-472x(00)00668-8] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Stromal cell-derived factor-1alpha (SDF-1alpha) is a potent chemoattractant for hematopoietic progenitor cells (HPC), suggesting that it could play an important role during their migration within or to the bone marrow (BM). The integrin VLA-4 mediates HPC adhesion to BM stroma by interacting with CS-1/fibronectin and VCAM-1. It is required during hematopoiesis and homing of HPC to the BM. As HPC migration in response to SDF-1alpha might require dynamic regulation of integrin function, we investigated if SDF-1alpha could modulate VLA-4 function on BM CD34(hi) cells.CD34(hi) BM cells and hematopoietic cell lines were tested for the effect of SDF-1alpha on VLA-4-dependent adhesion to CS-1/fibronectin and VCAM-1, as well as to BM stroma. CD34(hi) BM cells that adhered to VLA-4 ligands after SDF-1alpha treatment were characterized in colony-forming and long-term culture-initiating cell (LTC-IC) assays.SDF-1alpha rapidly (1 minute) and transiently upregulated the adhesion of CD34(hi) BM cells and hematopoietic cell lines to both CS-1/fibronectin and VCAM-1, and to BM stromal cells. The upregulation of VLA-4-dependent cell adhesion by SDF-1alpha targeted primitive LTC-IC as well as committed CD34(hi) cells. SDF-1alpha-triggered enhancement in VLA-4 function was inhibited by pertussis toxin (PTx) and cytochalasin D, indicating the involvement of G(i) protein downstream signaling and an intact cytoskeleton. Instead, activation of p44/42 MAP kinases by SDF-1alpha did not functionally correlate with enhancement of VLA-4-dependent cell adhesion. Modulation of VLA-4-mediated CD34(hi) BM cell adhesion by SDF-1alpha could play a key role in their migration within and to the BM and therefore influence their proliferation and differentiation.
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Affiliation(s)
- A Hidalgo
- Centro de Investigaciones Biológicas, Department of Immunology, Madrid, Spain
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39
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Herreros L, Rodríguez-Fernandez JL, Brown MC, Alonso-Lebrero JL, Cabañas C, Sánchez-Madrid F, Longo N, Turner CE, Sánchez-Mateos P. Paxillin localizes to the lymphocyte microtubule organizing center and associates with the microtubule cytoskeleton. J Biol Chem 2000; 275:26436-40. [PMID: 10840040 DOI: 10.1074/jbc.m003970200] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Paxillin is a focal adhesion-associated protein that functions as a multi-domain adapter protein, binding several structural and signaling molecules. alpha-Tubulin was identified as an interacting protein in a two-hybrid screen using the paxillin C-terminal LIM domain as a bait. In vitro binding assays with glutathione S-transferase-paxillin demonstrated an interaction of alpha-tubulin with the C terminus of paxillin. Another member of the tubulin family, gamma-tubulin, bound to both the N and the C terminus of paxillin. The interaction between paxillin and both alpha- and gamma-tubulin in vivo was confirmed by co-immunoprecipitation from human T lymphoblasts. Immunofluorescence studies revealed that, in adherent T cells, paxillin localized to sites of cell-matrix interaction as well as to a large perinuclear region. Confocal microscopy revealed that this region corresponds to the lymphocyte microtubule organizing center, where paxillin colocalizes with alpha- and gamma-tubulin. The localization of paxillin to this area was observed in cells in suspension as well as during adhesion to integrin ligands. These data constitute the first characterization of the interaction of paxillin with the microtubule cytoskeleton, and suggest that paxillin, in addition to its well established role at focal adhesions, could also be associated with the lymphocyte microtubule network.
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Affiliation(s)
- L Herreros
- Servicio de Inmunologia, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain
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40
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Sancho D, Nieto M, Llano M, Rodríguez-Fernández JL, Tejedor R, Avraham S, Cabañas C, López-Botet M, Sánchez-Madrid F. The tyrosine kinase PYK-2/RAFTK regulates natural killer (NK) cell cytotoxic response, and is translocated and activated upon specific target cell recognition and killing. J Cell Biol 2000; 149:1249-62. [PMID: 10851022 PMCID: PMC2175114 DOI: 10.1083/jcb.149.6.1249] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The compartmentalization of plasma membrane proteins has a key role in regulation of lymphocyte activation and development of immunity. We found that the proline-rich tyrosine kinase-2 (PYK-2/RAFTK) colocalized with the microtubule-organizing center (MTOC) at the trailing edge of migrating natural killer (NK) cells. When polyclonal NK cells bound to K562 targets, PYK-2 translocated to the area of NK-target cell interaction. The specificity of this process was assessed with NK cell clones bearing activatory or inhibitory forms of CD94/NKG2. The translocation of PYK-2, MTOC, and paxillin to the area of NK-target cell contact was regulated upon specific recognition of target cells through NK cell receptors, controlling target cell killing. Furthermore, parallel in vitro kinase assays showed that PYK-2 was activated in response to signals that specifically triggered its translocation and NK cell mediated cytotoxicity. The overexpression of both the wt and a dominant-negative mutant of PYK-2, but not ZAP-70 wt, prevented the specific translocation of the MTOC and paxillin, and blocked the cytotoxic response of NK cells. Our data indicate that subcellular compartmentalization of PYK-2 correlates with effective signal transduction. Furthermore, they also suggest an important role for PYK-2 on the assembly of the signaling complexes that regulate the cytotoxic response.
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Affiliation(s)
- David Sancho
- Servicio de Inmunología, Hospital de la Princesa, Universidad Autónoma de Madrid, E-28006, Madrid, Spain
| | - Marta Nieto
- Servicio de Inmunología, Hospital de la Princesa, Universidad Autónoma de Madrid, E-28006, Madrid, Spain
| | - Manuel Llano
- Servicio de Inmunología, Hospital de la Princesa, Universidad Autónoma de Madrid, E-28006, Madrid, Spain
| | - José L. Rodríguez-Fernández
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad Complutense, 28040 Madrid, Spain
| | - Reyes Tejedor
- Servicio de Inmunología, Hospital de la Princesa, Universidad Autónoma de Madrid, E-28006, Madrid, Spain
| | - Shalom Avraham
- Division of Experimental Medicine and Division of Hematology/Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215
| | - Carlos Cabañas
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad Complutense, 28040 Madrid, Spain
| | - Miguel López-Botet
- Servicio de Inmunología, Hospital de la Princesa, Universidad Autónoma de Madrid, E-28006, Madrid, Spain
| | - Francisco Sánchez-Madrid
- Servicio de Inmunología, Hospital de la Princesa, Universidad Autónoma de Madrid, E-28006, Madrid, Spain
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41
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Lim YC, Wakelin MW, Henault L, Goetz DJ, Yednock T, Cabañas C, Sánchez-Madrid F, Lichtman AH, Luscinskas FW. α4β1-Integrin Activation Is Necessary for High-Efficiency T-Cell Subset Interactions with VCAM-1 under Flow. Microcirculation 2000. [DOI: 10.1038/sj.mn.7300103] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Lim YC, Wakelin MW, Henault L, Goetz DJ, Yednock T, Cabañas C, Sánchez-Madrid F, Lichtman AH, Luscinskas FW. Alpha4beta1-integrin activation is necessary for high-efficiency T-cell subset interactions with VCAM-1 under flow. Microcirculation 2000; 7:201-14. [PMID: 10901499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
OBJECTIVE The purpose of this study was to examine the relationship between alpha4beta1-integrin state of activation on CD4+ T-cell subsets and their adhesive interaction to VCAM-1 under flow. METHODS Human CD4+ memory and naive T-cells were freshly isolated and effector-helper T-cell subsets. Th1 and Th2 cells, were differentiated in vitro from CD4+ naive T-cells. The expression of activation/ligand induced epitopes on beta1-integrins of each T-cell subset was assessed using mAb HUTS21 and mAb 15/7. T-cell subsets attachment and rolling on VCAM-1 was determined under defined flow conditions and the rates of attachment (ka), accumulation, and instantaneous rolling velocities were correlated to their beta1-integrin activation epitope expression. RESULTS A subset of memory T-cells constitutively express activation/ligand induced epitopes on beta1-integrins recognized by mAb HUTS21 and 15/7, whereas expression levels on naive T-cells is low or not detectable. Consistent with an activated phenotype, memory T-cells exhibit significantly higher rates of attachment and accumulation on VCAM-1 under flow as compared to naive T-cells. Interestingly, the expression of activation/ligand induced epitopes on beta1-integrins on Th2 cells and the ability of these cells to interact with VCAM-1 are comparable to memory T-cells. In contrast, Th1 cells did not interact as efficiently with VCAM-1, which correlated with lower expression of activation/ligand induced epitopes on these cells. VCAM-1 interactions are inhibited completely by pretreatment of the T-cells with blocking mAb to alpha4-integrins or beta1-integrins, indicating that alpha4beta1 is the predominant T-cell integrin involved. CONCLUSIONS Memory T-cells express constitutively active alpha4beta1-integrins, as compared to naive T-cells, which mediate high rates of initial attachment and sustained high-affinity adhesive interactions with VCAM-1 under flow conditions in vitro. Similarly, in vitro differentiated Th2 cells but not Th1 cells, which also express elevated levels of activated alpha4beta1-integrins, are capable of sustaining high-affinity adhesive interactions with VCAM-1. The differences observed in beta1-integrin activation on T-cell subsets may underlie selective recruitment patterns of T-cell subsets in vivo.
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Affiliation(s)
- Y C Lim
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
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Escudero E, Martín A, Nieto M, Nieto E, Navarro E, Luque A, Cabañas C, Sánchez-Madrid F, Mampaso F. Functional relevance of activated beta1 integrins in mercury-induced nephritis. J Am Soc Nephrol 2000; 11:1075-1084. [PMID: 10820171 DOI: 10.1681/asn.v1161075] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Cell adhesion through different adhesion molecules is a crucial event in the inflammatory response. Integrins can only bind and mediate cellular adhesion after their activation by different specific stimuli. The state of beta1 integrin activation can be assessed by a group of monoclonal antibodies (HUTS) that selectively recognize beta1 integrins in their active form. A similar activated epitope in the rat was defined using the anti-human monoclonal antibody HUTS-21, which recognizes an activation-dependent epitope on the beta1 chain. It was found that the divalent cations Mn(2+) and Hg(2+) were able to induce in vitro the activation of beta1 integrins on rat lymphocytes. The Hg(2+) cation induces an autoimmune disease in the Brown Norway rat characterized by synthesis and glomerular deposits of anti-glomerular basement membrane antibodies, proteinuria, and interstitial nephritis. Using the mercury model of nephritis, it was found that the expression of HUTS-21 epitope is induced in vivo in rat lymphocytes, and its appearance is correlated with the other parameters at the onset of the disease. In addition, the administration of HUTS-21 monoclonal antibody to HgCl(2)-treated rats offered evidence of its protective effects (1) against infiltration of renal interstitium by leukocytes, and (2) in the reduction of anti-glomerular basement membrane synthesis and glomerular deposition. Nevertheless, urinary protein values remained unaffected. These results demonstrate a key role of beta1-activated integrins in both leukocyte cell-cell interactions and leukocyte infiltration pathway mechanism, and also indicate that leukocyte migration may have less importance in the development of this disease than previously thought.
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Affiliation(s)
- Esther Escudero
- Department of Pathology, Hospital Ramón y Cajal, Universidad de Alcalá, Madrid, Spain
| | - Ana Martín
- Department of Pathology, Hospital Ramón y Cajal, Universidad de Alcalá, Madrid, Spain
| | - Marta Nieto
- Immunology Section, Hospital de la Princesa, Universidad Autónoma, Madrid, Spain
| | - Elena Nieto
- Department of Pathology, Hospital Ramón y Cajal, Universidad de Alcalá, Madrid, Spain
| | - Elena Navarro
- Department of Pathology, Hospital Ramón y Cajal, Universidad de Alcalá, Madrid, Spain
| | - Alfonso Luque
- Department of Biochemistry, Medical School, Universidad Complutense, Madrid, Spain
| | - Carlos Cabañas
- Department of Biochemistry, Medical School, Universidad Complutense, Madrid, Spain
| | | | - Francisco Mampaso
- Department of Pathology, Hospital Ramón y Cajal, Universidad de Alcalá, Madrid, Spain
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Woods ML, Cabañas C, Shimizu Y. Activation-dependent changes in soluble fibronectin binding and expression of beta1 integrin activation epitopes in T cells: relationship to T cell adhesion and migration. Eur J Immunol 2000; 30:38-49. [PMID: 10602025 DOI: 10.1002/1521-4141(200001)30:1<38::aid-immu38>3.0.co;2-b] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The relationship between activation-dependent changes in beta1 integrin conformation, T cell adhesion to immobilized fibronectin, and T cell migration in vitro was analyzed in this study. Stimulation of Jurkat T cells and peripheral T cells with Mn(2+), the activating beta1 integrin-specific monoclonal antibody (mAb) TS2 /16, CD2, or CD28 stimulation led to increased adhesion, soluble fibronectin (FN) binding and expression of the activation epitope defined by the beta1 integrin mAb HUTS-21. Phorbol 12-myristate 13-acetate treatment increased adhesion, but not soluble FN binding or HUTS-21 epitope expression. In peripheral T cells, CD3 or CD7 stimulation also led to increased adhesion, soluble FN binding and HUTS-21 epitope expression. Soluble FN blocked peripheral T cell adhesion induced by Mn(2+) or TS2/16, but had no effect on adhesion induced by the other integrin-activating signals. In contrast, migration induced by TS2/16, CD2, CD3, CD7 or CD28 stimulation was blocked by excess soluble FN. Phosphoinositide 3-OH kinase (PI 3-K) inhibitors blocked receptor-mediated increases in cell adhesion, but not soluble FN binding or HUTS-21 expression. Migration was similarly unaffected by PI 3-K inhibitors, with the exception of CD7- and CD28-induced migration, which was specifically blocked by LY294,002. These results suggest that activation-dependent changes in beta1 integrin conformation are PI 3-K-independent and are involved in T cell migration but not adhesion.
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Affiliation(s)
- M L Woods
- Department of Laboratory Medicine, Pathology Center for Immunology, Cancer Center, University of Minnesota Medical School, Minneapolis, USA
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45
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Nieto M, Rodríguez-Fernández JL, Navarro F, Sancho D, Frade JM, Mellado M, Martínez-A C, Cabañas C, Sánchez-Madrid F. Signaling through CD43 induces natural killer cell activation, chemokine release, and PYK-2 activation. Blood 1999; 94:2767-77. [PMID: 10515880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023] Open
Abstract
Natural killer (NK) cell activation is the result of a balance between positive and negative signals triggered by specific membrane receptors. We report here the activation of NK cells induced through the transmembrane glycoprotein CD43 (leukosialin, sialophorin). Engagement of CD43 by specific antibodies stimulated the secretion of the chemokines RANTES, macrophage inflammatory protein (MIP)-1alpha, and MIP-1beta, which was prevented by treatment of cells with the specific tyrosine kinase inhibitor genistein. Furthermore, signaling through CD43 increased the cytotoxic activity of NK cells and stimulated an increase in the tyrosine kinase activity in antiphosphotyrosine immune complexes of NK cell lysates. PYK-2 was identified among the tyrosine kinase proteins that become activated. Hence, PYK-2 activation was observed after 20 minutes of CD43 stimulation, reached a maximum after 45 to 60 minutes, and decreased to almost basal levels after 120 minutes of treatment. Together, these results demonstrate the role of CD43 as an activation molecule able to transduce positive activation signals in NK cells, including the regulation of chemokine synthesis, killing activity, and tyrosine kinase activation.
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Affiliation(s)
- M Nieto
- Servicio de Inmunología, Hospital de la Princesa, Universidad Autónoma de Madrid, Madrid, Spain
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Raab U, Lastres P, Arévalo MA, López-Novoa JM, Cabañas C, de la Rosa EJ, Bernabéu C. Endoglin is expressed in the chicken vasculature and is involved in angiogenesis. FEBS Lett 1999; 459:249-54. [PMID: 10518029 DOI: 10.1016/s0014-5793(99)01252-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Endoglin is a component of the transforming growth factor beta (TGF-beta) receptor complex, highly expressed by endothelial cells. Mutations in the endoglin gene are responsible for hereditary hemorrhagic telangiectasia type 1 (HHT1), an autosomal dominant vascular disorder caused by a haploinsufficiency mechanism. Vascular lesions (telangiectasia and arteriovenous malformations) in HHT1 are associated with loss of the capillary network, suggesting the involvement of endoglin in vascular repair processes. Using the chick chorioallantoic membrane (CAM) as an angiogenic model, we have analyzed the expression and function of chicken endoglin. A pan-specific polyclonal antibody (pAb) recognized chicken endoglin as demonstrated by immunostaining and Western blot analysis. In ovo treatment of chicken embryos with this pAb resulted in a significantly increased area of CAM. This effect was likely mediated by modulation of the ligand binding to endoglin as this pAb was able to inhibit TGF-beta1 binding. These results support the involvement of endoglin in the angiogenic process.
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Affiliation(s)
- U Raab
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), Velazquez 144, 28006, Madrid, Spain
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47
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Rodríguez-Fernández JL, Gómez M, Luque A, Hogg N, Sánchez-Madrid F, Cabañas C. The interaction of activated integrin lymphocyte function-associated antigen 1 with ligand intercellular adhesion molecule 1 induces activation and redistribution of focal adhesion kinase and proline-rich tyrosine kinase 2 in T lymphocytes. Mol Biol Cell 1999; 10:1891-907. [PMID: 10359604 PMCID: PMC25386 DOI: 10.1091/mbc.10.6.1891] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Integrin receptors play a central role in the biology of lymphocytes, mediating crucial functional aspects of these cells, including adhesion, activation, polarization, migration, and signaling. Here we report that induction of activation of the beta2-integrin lymphocyte function-associated antigen 1 (LFA-1) in T lymphocytes with divalent cations, phorbol esters, or stimulatory antibodies is followed by a dramatic polarization, resulting in a characteristic elongated morphology of the cells and the arrest of migrating lymphoblasts. This cellular polarization was prevented by treatment of cells with the specific tyrosine kinase inhibitor genistein. Furthermore, the interaction of the activated integrin LFA-1 with its ligand intercellular adhesion molecule 1 induced the activation of the cytoplasmic tyrosine kinases focal adhesion kinase (FAK) and proline-rich tyrosine kinase 2 (PYK-2). FAK activation reached a maximum after 45 min of stimulation; in contrast, PYK-2 activation peaked at 30 min, declining after 60 min. Upon polarization of lymphoblasts, FAK and PYK-2 redistributed from a diffuse localization in the cytoplasm to a region close to the microtubule-organizing center in these cells. FAK and PYK-2 activation was blocked when lymphoblasts were pretreated with actin and tubulin cytoskeleton-interfering agents, indicating its cytoskeletal dependence. Our results demonstrate that interaction of the beta2-integrin LFA-1 with its ligand intercellular adhesion molecule 1 induces remodeling of T lymphocyte morphology and activation and redistribution of the cytoplasmic tyrosine kinases FAK and PYK-2.
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Affiliation(s)
- J L Rodríguez-Fernández
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad Complutense, 28040 Madrid, Spain
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Cabañas C, Sánchez-Madrid F. CD11c (leukocyte integrin CR4 alpha subunit). J BIOL REG HOMEOS AG 1999; 13:134-6. [PMID: 10503738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Affiliation(s)
- C Cabañas
- Departamento de Bioquímica, Facultad de Medicina, Universidad Complutense, Madrid, Spain
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Cabañas C, Sánchez-Madrid F. CD18 (leukocyte integrin beta2 subunit). J BIOL REG HOMEOS AG 1999; 13:137-9. [PMID: 10503739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Affiliation(s)
- C Cabañas
- Departamento de Bioquímica, Facultad de Medicina, Universidad Complutense, Madrid, Spain
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50
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Cabañas C, Sánchez-Madrid F. CD11b (leukocyte integrin CR3 alpha subunit). J BIOL REG HOMEOS AG 1999; 13:130-3. [PMID: 10503737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Affiliation(s)
- C Cabañas
- Departamento de Bioquímica, Facultad de Medicina, Universidad Complutense, Madrid, Spain
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