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Popov IK, Tao J, Chang C. The RhoGEF protein Plekhg5 self-associates via its PH domain to regulate apical cell constriction. Mol Biol Cell 2024; 35:ar134. [PMID: 39196644 DOI: 10.1091/mbc.e24-04-0179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2024] Open
Abstract
RhoGEFs are critical activators of Rho family small GTPases and regulate diverse biological processes, such as cell division and tissue morphogenesis. We reported previously that the RhoGEF gene plekhg5 controls apical constriction of bottle cells at the blastopore lip during Xenopus gastrulation, but the detailed mechanism of plekhg5 action is not understood in depth. In this study, we show that localization of Plekhg5 in the apical cortex depends on its N-terminal sequences and intact guanine nucleotide exchange activity, whereas the C-terminal sequences prevent ectopic localization of the protein to the basolateral compartment. We also reveal that Plekhg5 self-associates via its PH domain, and this interaction leads to functional rescue of two mutants that lack the N-terminal region and the guanine nucleotide exchange factor activity, respectively, in trans. A point mutation in the PH domain corresponding to a variant associated with human disease leads to loss of self-association and failure of the mutant to induce apical constriction. Taken together, our results suggest that PH-mediated self-association and N-terminal domain-mediated subcellular localization are both crucial for the function of Plekhg5 in inducing apical constriction.
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Affiliation(s)
- Ivan K Popov
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Jiahui Tao
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Chenbei Chang
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294
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2
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Wang Y, Yu FX. Angiomotin family proteins in the Hippo signaling pathway. Bioessays 2024; 46:e2400076. [PMID: 38760875 DOI: 10.1002/bies.202400076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/03/2024] [Accepted: 05/08/2024] [Indexed: 05/19/2024]
Abstract
The Motin family proteins (Motins) are a class of scaffolding proteins consisting of Angiomotin (AMOT), AMOT-like protein 1 (AMOTL1), and AMOT-like protein 2 (AMOTL2). Motins play a pivotal role in angiogenesis, tumorigenesis, and neurogenesis by modulating multiple cellular signaling pathways. Recent findings indicate that Motins are components of the Hippo pathway, a signaling cascade involved in development and cancer. This review discusses how Motins are integrated into the Hippo signaling network, as either upstream regulators or downstream effectors, to modulate cell proliferation and migration. The repression of YAP/TAZ by Motins contributes to growth inhibition, whereas subcellular localization of Motins and their interactions with actin fibers are critical in regulating cell migration. The net effect of Motins on cell proliferation and migration may contribute to their diverse biological functions.
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Affiliation(s)
- Yu Wang
- Institute of Pediatrics, Children's Hospital of Fudan University, International Co-laboratory of Medical Epigenetics and Metabolism, State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Fa-Xing Yu
- Institute of Pediatrics, Children's Hospital of Fudan University, International Co-laboratory of Medical Epigenetics and Metabolism, State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
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3
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Wang H, Ye M, Jin X. Role of angiomotin family members in human diseases (Review). Exp Ther Med 2024; 27:258. [PMID: 38766307 PMCID: PMC11099588 DOI: 10.3892/etm.2024.12546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 10/23/2023] [Indexed: 05/22/2024] Open
Abstract
Angiomotin (Amot) family members, including Amot, Amot-like protein 1 (Amotl1) and Amot-like protein 2 (Amotl2), have been found to interact with angiostatins. In addition, Amot family members are involved in various physiological and pathological functions such as embryonic development, angiogenesis and tumorigenesis. Some studies have also demonstrated its regulation in signaling pathways such as the Hippo signaling pathway, AMPK signaling pathway and mTOR signaling pathways. Amot family members play an important role in neural stem cell differentiation, dendritic formation and synaptic maturation. In addition, an increasing number of studies have focused on their function in promoting and/or suppressing cancer, but the underlying mechanisms remain to be elucidated. The present review integrated relevant studies on upstream regulation and downstream signals of Amot family members, as well as the latest progress in physiological and pathological functions and clinical applications, hoping to offer important ideas for further research.
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Affiliation(s)
- Haoyun Wang
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
- Department of Radiotherapy, The First Hospital of Ningbo University, Ningbo, Zhejiang 315010, P.R. China
| | - Meng Ye
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
- Department of Radiotherapy, The First Hospital of Ningbo University, Ningbo, Zhejiang 315010, P.R. China
| | - Xiaofeng Jin
- Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
- Department of Radiotherapy, The First Hospital of Ningbo University, Ningbo, Zhejiang 315010, P.R. China
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4
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Groh AC, Möller-Kerutt A, Gilhaus K, Höffken V, Nedvetsky P, Kleimann S, Behrens M, Ghosh S, Hansen U, Krahn MP, Ebnet K, Pavenstädt H, Ludwig A, Weide T. PALS1 is a key regulator of the lateral distribution of tight junction proteins in renal epithelial cells. J Cell Sci 2024; 137:jcs261303. [PMID: 38265145 DOI: 10.1242/jcs.261303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 12/04/2023] [Indexed: 01/25/2024] Open
Abstract
The evolutionarily conserved apical Crumbs (CRB) complex, consisting of the core components CRB3a (an isoform of CRB3), PALS1 and PATJ, plays a key role in epithelial cell-cell contact formation and cell polarization. Recently, we observed that deletion of one Pals1 allele in mice results in functional haploinsufficiency characterized by renal cysts. Here, to address the role of PALS1 at the cellular level, we generated CRISPR/Cas9-mediated PALS1-knockout MDCKII cell lines. The loss of PALS1 resulted in increased paracellular permeability, indicating an epithelial barrier defect. This defect was associated with a redistribution of several tight junction-associated proteins from bicellular to tricellular contacts. PALS1-dependent localization of tight junction proteins at bicellular junctions required its interaction with PATJ. Importantly, reestablishment of the tight junction belt upon transient F-actin depolymerization or upon Ca2+ removal was strongly delayed in PALS1-deficient cells. Additionally, the cytoskeleton regulator RhoA was redistributed from junctions into the cytosol under PALS1 knockout. Together, our data uncover a critical role of PALS1 in the coupling of tight junction proteins to the F-actin cytoskeleton, which ensures their correct distribution along bicellular junctions and the formation of tight epithelial barrier.
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Affiliation(s)
- Ann-Christin Groh
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Annika Möller-Kerutt
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Kevin Gilhaus
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Verena Höffken
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Pavel Nedvetsky
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Medical Cell Biology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Simon Kleimann
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Malina Behrens
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Sujasha Ghosh
- School of Biological Sciences and NTU Institute of Structural Biology (NISB), Nanyang Technological University, 60 Nanyang Drive, 637551 Singapore City, Singapore
| | - Uwe Hansen
- University Hospital of Münster, Institute of Musculoskeletal Medicine (IMM), Head Core Facility Electron Microscopy, Domagkstraße 3, 48149 Münster, Germany
| | - Michael P Krahn
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Medical Cell Biology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Klaus Ebnet
- Institute-associated Research Group "Cell adhesion and cell polarity", Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation (ZMBE), University of Münster, Von-Esmarch-Straße 56, 48149 Münster, Germany
| | - Hermann Pavenstädt
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Alexander Ludwig
- School of Biological Sciences and NTU Institute of Structural Biology (NISB), Nanyang Technological University, 60 Nanyang Drive, 637551 Singapore City, Singapore
| | - Thomas Weide
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
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5
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Bellanda M, Damulewicz M, Zambelli B, Costanzi E, Gregoris F, Mammi S, Tosatto SCE, Costa R, Minervini G, Mazzotta GM. A PDZ scaffolding/CaM-mediated pathway in Cryptochrome signaling. Protein Sci 2024; 33:e4914. [PMID: 38358255 PMCID: PMC10868427 DOI: 10.1002/pro.4914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 12/12/2023] [Accepted: 01/13/2024] [Indexed: 02/16/2024]
Abstract
Cryptochromes are cardinal constituents of the circadian clock, which orchestrates daily physiological rhythms in living organisms. A growing body of evidence points to their participation in pathways that have not traditionally been associated with circadian clock regulation, implying that cryptochromes may be subject to modulation by multiple signaling mechanisms. In this study, we demonstrate that human CRY2 (hCRY2) forms a complex with the large, modular scaffolding protein known as Multi-PDZ Domain Protein 1 (MUPP1). This interaction is facilitated by the calcium-binding protein Calmodulin (CaM) in a calcium-dependent manner. Our findings suggest a novel cooperative mechanism for the regulation of mammalian cryptochromes, mediated by calcium ions (Ca2+ ) and CaM. We propose that this Ca2+ /CaM-mediated signaling pathway may be an evolutionarily conserved mechanism that has been maintained from Drosophila to mammals, most likely in relation to its potential role in the broader context of cryptochrome function and regulation. Further, the understanding of cryptochrome interactions with other proteins and signaling pathways could lead to a better definition of its role within the intricate network of molecular interactions that govern circadian rhythms.
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Affiliation(s)
| | - Milena Damulewicz
- Department of Cell Biology and ImagingJagiellonian UniversityKrakówPoland
| | - Barbara Zambelli
- Department of Pharmacy and BiotechnologyUniversity of BolognaBolognaItaly
| | - Elisa Costanzi
- Department of Chemical SciencesUniversity of PadovaPadovaItaly
| | | | - Stefano Mammi
- Department of Chemical SciencesUniversity of PadovaPadovaItaly
| | | | - Rodolfo Costa
- Department of BiologyUniversity of PadovaPadovaItaly
- Institute of Neuroscience, National Research Council of Italy (CNR)PadovaItaly
- Chronobiology Section, Faculty of Health and Medical SciencesUniversity of SurreyGuildfordUK
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6
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Medina-Dols A, Cañellas G, Capó T, Solé M, Mola-Caminal M, Cullell N, Jaume M, Nadal-Salas L, Llinàs J, Gómez L, Tur S, Jiménez C, Díaz RM, Carrera C, Muiño E, Gallego-Fabrega C, Soriano-Tárraga C, Ruiz-Guerra L, Pol-Fuster J, Asensio V, Muncunill J, Fleischer A, Iglesias A, Giralt-Steinhauer E, Lazcano U, Fernández-Pérez I, Jiménez-Balado J, Gabriel-Salazar M, Garcia-Gabilondo M, Lei T, Torres-Aguila NP, Cárcel-Márquez J, Lladó J, Olmos G, Rosell A, Montaner J, Planas AM, Rabionet R, Hernández-Guillamon M, Jiménez-Conde J, Fernández-Cadenas I, Vives-Bauzá C. Role of PATJ in stroke prognosis by modulating endothelial to mesenchymal transition through the Hippo/Notch/PI3K axis. Cell Death Discov 2024; 10:85. [PMID: 38368420 PMCID: PMC10874379 DOI: 10.1038/s41420-024-01857-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 01/29/2024] [Accepted: 02/07/2024] [Indexed: 02/19/2024] Open
Abstract
Through GWAS studies we identified PATJ associated with functional outcome after ischemic stroke (IS). The aim of this study was to determine PATJ role in brain endothelial cells (ECs) in the context of stroke outcome. PATJ expression analyses in patient's blood revealed that: (i) the risk allele of rs76221407 induces higher expression of PATJ, (ii) PATJ is downregulated 24 h after IS, and (iii) its expression is significantly lower in those patients with functional independence, measured at 3 months with the modified Rankin scale ((mRS) ≤2), compared to those patients with marked disability (mRS = 4-5). In mice brains, PATJ was also downregulated in the injured hemisphere at 48 h after ischemia. Oxygen-glucose deprivation and hypoxia-dependent of Hypoxia Inducible Factor-1α also caused PATJ depletion in ECs. To study the effects of PATJ downregulation, we generated PATJ-knockdown human microvascular ECs. Their transcriptomic profile evidenced a complex cell reprogramming involving Notch, TGF-ß, PI3K/Akt, and Hippo signaling that translates in morphological and functional changes compatible with endothelial to mesenchymal transition (EndMT). PATJ depletion caused loss of cell-cell adhesion, upregulation of metalloproteases, actin cytoskeleton remodeling, cytoplasmic accumulation of the signal transducer C-terminal transmembrane Mucin 1 (MUC1-C) and downregulation of Notch and Hippo signaling. The EndMT phenotype of PATJ-depleted cells was associated with the nuclear recruitment of MUC1-C, YAP/TAZ, β-catenin, and ZEB1. Our results suggest that PATJ downregulation 24 h after IS promotes EndMT, an initial step prior to secondary activation of a pro-angiogenic program. This effect is associated with functional independence suggesting that activation of EndMT shortly after stroke onset is beneficial for stroke recovery.
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Affiliation(s)
- Aina Medina-Dols
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
| | - Guillem Cañellas
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Biology, University of Balearic Islands (UIB), Institut Universitari d'Investigacions en Ciències de la Salut (IUNICS), Palma, Spain
| | - Toni Capó
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Biology, University of Balearic Islands (UIB), Institut Universitari d'Investigacions en Ciències de la Salut (IUNICS), Palma, Spain
| | - Montse Solé
- Neurovascular Research Laboratory, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Marina Mola-Caminal
- Neurology, Hospital del Mar Medical Research Institute, Barcelona, Spain
- Unit of Medical Epidemiology, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Natalia Cullell
- Neurology, Hospital Universitari Mútua de Terrassa/Fundacio Docència i Recerca Mútua Terrassa, Terrassa, Spain
- Stroke Pharmacogenomics and Genetics, Institut de Recerca Sant Pau (IR SANT PAU), Barcelona, Spain
| | - Marina Jaume
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Biology, University of Balearic Islands (UIB), Institut Universitari d'Investigacions en Ciències de la Salut (IUNICS), Palma, Spain
| | - Laura Nadal-Salas
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Biology, University of Balearic Islands (UIB), Institut Universitari d'Investigacions en Ciències de la Salut (IUNICS), Palma, Spain
| | - Jaume Llinàs
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Biology, University of Balearic Islands (UIB), Institut Universitari d'Investigacions en Ciències de la Salut (IUNICS), Palma, Spain
| | - Lluis Gómez
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Biology, University of Balearic Islands (UIB), Institut Universitari d'Investigacions en Ciències de la Salut (IUNICS), Palma, Spain
| | - Silvia Tur
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Neurology, Hospital Universitari Son Espases (HUSE), Palma, Spain
| | - Carmen Jiménez
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Neurology, Hospital Universitari Son Espases (HUSE), Palma, Spain
| | - Rosa M Díaz
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Neurology, Hospital Universitari Son Espases (HUSE), Palma, Spain
| | - Caty Carrera
- Neurovascular Research Laboratory, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
- Stroke Pharmacogenomics and Genetics, Institut de Recerca Sant Pau (IR SANT PAU), Barcelona, Spain
| | - Elena Muiño
- Stroke Pharmacogenomics and Genetics, Institut de Recerca Sant Pau (IR SANT PAU), Barcelona, Spain
| | - Cristina Gallego-Fabrega
- Stroke Pharmacogenomics and Genetics, Institut de Recerca Sant Pau (IR SANT PAU), Barcelona, Spain
| | | | - Laura Ruiz-Guerra
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
| | - Josep Pol-Fuster
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Biology, University of Balearic Islands (UIB), Institut Universitari d'Investigacions en Ciències de la Salut (IUNICS), Palma, Spain
| | - Víctor Asensio
- Department of Genetics (GEN-IB), HUSE, IdISBa, Palma, Spain
| | | | | | - Amanda Iglesias
- Department of Respiratory Medicine,, Hospital Universitari Son Espases-IdISBa Palma, Spain; CIBERES, Instituto de Salud Carlos III, Madrid, Spain
- CIBER of Respiratory Diseases (CIBERES), Madrid, Spain
| | | | - Uxue Lazcano
- Neurology, Hospital del Mar Medical Research Institute, Barcelona, Spain
| | | | | | - Marina Gabriel-Salazar
- Neurovascular Research Laboratory, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Miguel Garcia-Gabilondo
- Neurovascular Research Laboratory, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Ting Lei
- Neurovascular Research Laboratory, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Nuria-Paz Torres-Aguila
- Stroke Pharmacogenomics and Genetics, Institut de Recerca Sant Pau (IR SANT PAU), Barcelona, Spain
| | - Jara Cárcel-Márquez
- Stroke Pharmacogenomics and Genetics, Institut de Recerca Sant Pau (IR SANT PAU), Barcelona, Spain
| | - Jerònia Lladó
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Biology, University of Balearic Islands (UIB), Institut Universitari d'Investigacions en Ciències de la Salut (IUNICS), Palma, Spain
| | - Gabriel Olmos
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain
- Department of Biology, University of Balearic Islands (UIB), Institut Universitari d'Investigacions en Ciències de la Salut (IUNICS), Palma, Spain
| | - Anna Rosell
- Neurovascular Research Laboratory, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Joan Montaner
- Neurovascular Research Laboratory, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
- Institute of Biomedicine of Seville, IBiS/Hospital Universitario Virgen del Rocío/CSIC/University of Seville & Department of Neurology, Hospital Universitario Virgen Macarena, Seville, Spain
| | - Anna M Planas
- Department of Neuroscience and Experimental Therapeutics, Institut d'Investigacions Biomèdiques de Barcelona (IIBB)-Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain
- Area of Neuroscience, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Raquel Rabionet
- Department of Genetics, Microbiology & Statistics, IBUB, University of Barcelona (UB), Barcelona, Spain
- Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Mar Hernández-Guillamon
- Neurovascular Research Laboratory, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | - Israel Fernández-Cadenas
- Stroke Pharmacogenomics and Genetics, Institut de Recerca Sant Pau (IR SANT PAU), Barcelona, Spain
| | - Cristòfol Vives-Bauzá
- Neurobiology Laboratory, Research Unit, Hospital Universitari Son Espases, Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.
- Department of Biology, University of Balearic Islands (UIB), Institut Universitari d'Investigacions en Ciències de la Salut (IUNICS), Palma, Spain.
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7
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Bulos ML, Grzelak EM, Li-Ma C, Chen E, Hull M, Johnson KA, Bollong MJ. Pharmacological inhibition of CLK2 activates YAP by promoting alternative splicing of AMOTL2. eLife 2023; 12:RP88508. [PMID: 38126343 PMCID: PMC10735217 DOI: 10.7554/elife.88508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
Yes-associated protein (YAP), the downstream effector of the evolutionarily conserved Hippo pathway, promotes cellular proliferation and coordinates certain regenerative responses in mammals. Small molecule activators of YAP may, therefore, display therapeutic utility in treating disease states involving insufficient proliferative repair. From a high-throughput chemical screen of the comprehensive drug repurposing library ReFRAME, here we report the identification of SM04690, a clinical stage inhibitor of CLK2, as a potent activator of YAP-driven transcriptional activity in cells. CLK2 inhibition promotes alternative splicing of the Hippo pathway protein AMOTL2, producing an exon-skipped gene product that can no longer associate with membrane-bound proteins, resulting in decreased phosphorylation and membrane localization of YAP. This study reveals a novel mechanism by which pharmacological perturbation of alternative splicing inactivates the Hippo pathway and promotes YAP-dependent cellular growth.
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Affiliation(s)
- Maya L Bulos
- Department of Chemistry, The Scripps Research InstituteLa JollaUnited States
| | - Edyta M Grzelak
- Department of Chemistry, The Scripps Research InstituteLa JollaUnited States
| | - Chloris Li-Ma
- Department of Chemistry, The Scripps Research InstituteLa JollaUnited States
| | - Emily Chen
- Calibr, A Division of Scripps ResearchLa JollaUnited States
| | - Mitchell Hull
- Calibr, A Division of Scripps ResearchLa JollaUnited States
| | | | - Michael J Bollong
- Department of Chemistry, The Scripps Research InstituteLa JollaUnited States
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8
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Kobayashi S, Cox AG, Harvey KF, Hogan BM. Vasculature is getting Hip(po): Hippo signaling in vascular development and disease. Dev Cell 2023; 58:2627-2640. [PMID: 38052179 DOI: 10.1016/j.devcel.2023.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 05/29/2023] [Accepted: 11/01/2023] [Indexed: 12/07/2023]
Abstract
The Hippo signaling pathway regulates developmental organ growth, regeneration, and cell fate decisions. Although the role of the Hippo pathway, and its transcriptional effectors YAP and TAZ, has been well documented in many cell types and species, only recently have the roles for this pathway come to light in vascular development and disease. Experiments in mice, zebrafish, and in vitro have uncovered roles for the Hippo pathway, YAP, and TAZ in vasculogenesis, angiogenesis, and lymphangiogenesis. In addition, the Hippo pathway has been implicated in vascular cancers and cardiovascular diseases, thus identifying it as a potential therapeutic target for the treatment of these conditions. However, despite recent advances, Hippo's role in the vasculature is still underappreciated compared with its role in epithelial tissues. In this review, we appraise our current understanding of the Hippo pathway in blood and lymphatic vessel development and highlight the current knowledge gaps and opportunities for further research.
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Affiliation(s)
- Sakurako Kobayashi
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, 305 Grattan St, Melbourne, VIC 3000, Australia; Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Andrew G Cox
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, 305 Grattan St, Melbourne, VIC 3000, Australia; Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, VIC 3010, Australia; Department of Biochemistry and Pharmacology, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Kieran F Harvey
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, 305 Grattan St, Melbourne, VIC 3000, Australia; Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, VIC 3010, Australia; Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC 3800, Australia
| | - Benjamin M Hogan
- Organogenesis and Cancer Program, Peter MacCallum Cancer Centre, 305 Grattan St, Melbourne, VIC 3000, Australia; Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, VIC 3010, Australia; Department of Anatomy and Physiology, The University of Melbourne, Parkville, VIC 3010, Australia.
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9
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Bulos ML, Grzelak EM, Li-Ma C, Chen E, Hull M, Johnson KA, Bollong MJ. Pharmacological inhibition of CLK2 activates YAP by promoting alternative splicing of AMOTL2. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.19.537449. [PMID: 37131806 PMCID: PMC10153145 DOI: 10.1101/2023.04.19.537449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Yes-associated protein (YAP), the downstream effector of the evolutionarily conserved Hippo pathway, promotes cellular proliferation and coordinates certain regenerative responses in mammals. Small molecule activators of YAP may therefore display therapeutic utility in treating disease states involving insufficient proliferative repair. From a high-throughput chemical screen of the comprehensive drug repurposing library ReFRAME, here we report the identification of SM04690, a clinical stage inhibitor of CLK2, as a potent activator of YAP driven transcriptional activity in cells. CLK2 inhibition promotes alternative splicing of the Hippo pathway protein AMOTL2, producing an exon-skipped gene product that can no longer associate with membrane-bound proteins, resulting in decreased phosphorylation and membrane localization of YAP. This study reveals a novel mechanism by which pharmacological perturbation of alternative splicing inactivates the Hippo pathway and promotes YAP dependent cellular growth.
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Affiliation(s)
- Maya L. Bulos
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Edyta M. Grzelak
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Chloris Li-Ma
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Emily Chen
- Calibr, A Division of Scripps Research, La Jolla, CA, 92037, USA
| | - Mitchell Hull
- Calibr, A Division of Scripps Research, La Jolla, CA, 92037, USA
| | | | - Michael J. Bollong
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
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10
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Wang Y, Zhu Y, Wang Y, Chang Y, Geng F, Ma M, Gu Y, Yu A, Zhu R, Yu P, Sha Z, Qi S, Li J, Zhao W, Pan W, Zhang R, Yu F. Proteolytic activation of angiomotin by DDI2 promotes angiogenesis. EMBO J 2023; 42:e112900. [PMID: 37350545 PMCID: PMC10390880 DOI: 10.15252/embj.2022112900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 05/23/2023] [Accepted: 06/06/2023] [Indexed: 06/24/2023] Open
Abstract
The scaffolding protein angiomotin (AMOT) is indispensable for vertebrate embryonic angiogenesis. Here, we report that AMOT undergoes cleavage in the presence of lysophosphatidic acid (LPA), a lipid growth factor also involved in angiogenesis. AMOT cleavage is mediated by aspartic protease DNA damage-inducible 1 homolog 2 (DDI2), and the process is tightly regulated by a signaling axis including neurofibromin 2 (NF2), tankyrase 1/2 (TNKS1/2), and RING finger protein 146 (RNF146), which induce AMOT membrane localization, poly ADP ribosylation, and ubiquitination, respectively. In both zebrafish and mice, the genetic inactivation of AMOT cleavage regulators leads to defective angiogenesis, and the phenotype is rescued by the overexpression of AMOT-CT, a C-terminal AMOT cleavage product. In either physiological or pathological angiogenesis, AMOT-CT is required for vascular expansion, whereas uncleavable AMOT represses this process. Thus, our work uncovers a signaling pathway that regulates angiogenesis by modulating a cleavage-dependent activation of AMOT.
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Affiliation(s)
- Yu Wang
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Yuwen Zhu
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Yebin Wang
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Yue Chang
- School of Life SciencesFudan UniversityShanghaiChina
- TaiKang Medical School (School of Basic Medical Sciences), Hubei Provincial Key Laboratory of Developmentally Originated DiseaseWuhan UniversityWuhanChina
| | - Fang Geng
- School of Life SciencesFudan UniversityShanghaiChina
- TaiKang Medical School (School of Basic Medical Sciences), Hubei Provincial Key Laboratory of Developmentally Originated DiseaseWuhan UniversityWuhanChina
| | - Mingyue Ma
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Yuan Gu
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Aijuan Yu
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Rui Zhu
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Pengcheng Yu
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Zhao Sha
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Sixian Qi
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Jian Li
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Wencao Zhao
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
- Key Laboratory of Tissue Microenvironment and Tumor, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of Sciences (CAS)ShanghaiChina
| | - Weijun Pan
- Key Laboratory of Tissue Microenvironment and Tumor, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of Sciences (CAS)ShanghaiChina
| | - Ruilin Zhang
- TaiKang Medical School (School of Basic Medical Sciences), Hubei Provincial Key Laboratory of Developmentally Originated DiseaseWuhan UniversityWuhanChina
| | - Fa‐Xing Yu
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co‐laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical CollegeFudan UniversityShanghaiChina
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11
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Cao R, Zhu R, Sha Z, Qi S, Zhong Z, Zheng F, Lei Y, Tan Y, Zhu Y, Wang Y, Wang Y, Yu FX. WWC1/2 regulate spinogenesis and cognition in mice by stabilizing AMOT. Cell Death Dis 2023; 14:491. [PMID: 37528078 PMCID: PMC10394084 DOI: 10.1038/s41419-023-06020-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 07/16/2023] [Accepted: 07/25/2023] [Indexed: 08/03/2023]
Abstract
WWC1 regulates episodic learning and memory, and genetic nucleotide polymorphism of WWC1 is associated with neurodegenerative diseases such as Alzheimer's disease. However, the molecular mechanism through which WWC1 regulates neuronal function has not been fully elucidated. Here, we show that WWC1 and its paralogs (WWC2/3) bind directly to angiomotin (AMOT) family proteins (Motins), and recruit USP9X to deubiquitinate and stabilize Motins. Deletion of WWC genes in different cell types leads to reduced protein levels of Motins. In mice, neuron-specific deletion of Wwc1 and Wwc2 results in reduced expression of Motins and lower density of dendritic spines in the cortex and hippocampus, in association with impaired cognitive functions such as memory and learning. Interestingly, ectopic expression of AMOT partially rescues the neuronal phenotypes associated with Wwc1/2 deletion. Thus, WWC proteins modulate spinogenesis and cognition, at least in part, by regulating the protein stability of Motins.
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Affiliation(s)
- Runyi Cao
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Rui Zhu
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Zhao Sha
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Sixian Qi
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Zhenxing Zhong
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Fengyun Zheng
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Yubin Lei
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Yanfeng Tan
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Yuwen Zhu
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Yu Wang
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
| | - Yi Wang
- Department of Neurology, Children's Hospital of Fudan University, National Children's Medical Center, No. 399 Wanyuan Road, Shanghai, 201102, China.
| | - Fa-Xing Yu
- Institute of Pediatrics, Children's Hospital of Fudan University, and the Shanghai Key Laboratory of Medical Epigenetics, The International Co-laboratory of Medical Epigenetics and Metabolism, the State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
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12
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Lin WH, Feathers RW, Cooper LM, Lewis-Tuffin LJ, Chen J, Sarkaria JN, Anastasiadis PZ. A Syx-RhoA-Dia1 signaling axis regulates cell cycle progression, DNA damage, and therapy resistance in glioblastoma. JCI Insight 2023; 8:e157491. [PMID: 37427593 PMCID: PMC10371349 DOI: 10.1172/jci.insight.157491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 05/25/2023] [Indexed: 07/11/2023] Open
Abstract
Glioblastomas (GBM) are aggressive tumors that lack effective treatments. Here, we show that the Rho family guanine nucleotide exchange factor Syx promotes GBM cell growth both in vitro and in orthotopic xenografts derived from patients with GBM. Growth defects upon Syx depletion are attributed to prolonged mitosis, increased DNA damage, G2/M cell cycle arrest, and cell apoptosis, mediated by altered mRNA and protein expression of various cell cycle regulators. These effects are phenocopied by depletion of the Rho downstream effector Dia1 and are due, at least in part, to increased phosphorylation, cytoplasmic retention, and reduced activity of the YAP/TAZ transcriptional coactivators. Furthermore, targeting Syx signaling cooperates with radiation treatment and temozolomide (TMZ) to decrease viability in GBM cells, irrespective of their inherent response to TMZ. The data indicate that a Syx-RhoA-Dia1-YAP/TAZ signaling axis regulates cell cycle progression, DNA damage, and therapy resistance in GBM and argue for its targeting for cancer treatment.
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Affiliation(s)
- Wan-Hsin Lin
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Ryan W. Feathers
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Lisa M. Cooper
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | | | - Jiaxiang Chen
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Jann N. Sarkaria
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, USA
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13
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Zhang Y, Zhang Y, Hutterer E, Hultin S, Bergman O, Kolbeinsdottir S, Jin H, Forteza MJ, Ketelhuth DFJ, Roy J, Hedin U, Enge M, Matic L, Eriksson P, Holmgren L. The VE-cadherin/AmotL2 mechanosensory pathway suppresses aortic inflammation and the formation of abdominal aortic aneurysms. NATURE CARDIOVASCULAR RESEARCH 2023; 2:629-644. [PMID: 39195920 PMCID: PMC11358041 DOI: 10.1038/s44161-023-00298-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 06/01/2023] [Indexed: 08/29/2024]
Abstract
Endothelial cells respond to mechanical forces exerted by blood flow. Endothelial cell-cell junctions and the sites of endothelial adhesion to the matrix sense and transmit mechanical forces to the cellular cytoskeleton. Here we show that the scaffold protein AmotL2 connects junctional VE-cadherin and actin filaments to the nuclear lamina. AmotL2 is essential for the formation of radial actin filaments and the alignment of endothelial cells, and, in its absence, nuclear integrity and positioning are altered. Molecular analysis demonstrated that VE-cadherin binds to AmotL2 and actin, resulting in a cascade that transmits extracellular mechanical signals to the nuclear membrane. Furthermore, the endothelial deficit of AmotL2 in mice fed normal diet provoked a pro-inflammatory response and abdominal aortic aneurysms (AAAs). Transcriptome analysis of human AAA samples revealed a negative correlation between AmotL2 and inflammation of the aortic intima. These findings offer insight into the link between junctional mechanotransduction and vascular disease.
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Affiliation(s)
- Yuanyuan Zhang
- Department of Oncology-Pathology, BioClinicum, Karolinska Institutet, Stockholm, Sweden
| | - Yumeng Zhang
- Department of Oncology-Pathology, BioClinicum, Karolinska Institutet, Stockholm, Sweden
| | - Evelyn Hutterer
- Department of Oncology-Pathology, BioClinicum, Karolinska Institutet, Stockholm, Sweden
| | - Sara Hultin
- Department of Oncology-Pathology, BioClinicum, Karolinska Institutet, Stockholm, Sweden
| | - Otto Bergman
- Department of Medicine Solna, BioClinicum, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Solrun Kolbeinsdottir
- Department of Oncology-Pathology, BioClinicum, Karolinska Institutet, Stockholm, Sweden
| | - Hong Jin
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Maria J Forteza
- Department of Medicine Solna, BioClinicum, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Daniel F J Ketelhuth
- Department of Medicine Solna, BioClinicum, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
- Department of Cardiovascular and Renal Research, Institutet of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Joy Roy
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Ulf Hedin
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Martin Enge
- Department of Oncology-Pathology, BioClinicum, Karolinska Institutet, Stockholm, Sweden
| | - Ljubica Matic
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Per Eriksson
- Department of Medicine Solna, BioClinicum, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Lars Holmgren
- Department of Oncology-Pathology, BioClinicum, Karolinska Institutet, Stockholm, Sweden.
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14
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Amirifar P, Kissil J. The role of Motin family proteins in tumorigenesis-an update. Oncogene 2023; 42:1265-1271. [PMID: 36973516 DOI: 10.1038/s41388-023-02677-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/15/2023] [Accepted: 03/17/2023] [Indexed: 03/29/2023]
Abstract
The Motin protein family consists of three members: AMOT (p80 and p130 isoforms), AMOT-like protein 1 (AMOTL1), and AMOT-like protein 2 (AMOTL2). The family members play an important role in processes such as cell proliferation, migration, angiogenesis, tight junction formation, and cell polarity. These functions are mediated through the involvement of the Motins in the regulation of different signal transduction pathways, including those regulated by small G-proteins and the Hippo-YAP pathway. One of the more characterized aspects of Motin family function is their role in regulating signaling through the Hippo-YAP pathway, and while some studies suggest a YAP-inhibitory function other studies indicate the Motins are required for YAP activity. This duality is also reflected in previous reports, often contradictory, that suggest the Motin proteins can function as oncogenes or tumor suppressors in tumorigenesis. In this review we summarize recent findings and integrate that with the existing work describing the multifunctional role of the Motins in different cancers. The emerging picture suggests that the Motin protein function is cell-type and context dependent and that further investigation in relevant cell types and whole organism models is required for the elucidation of the function of this protein family.
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Affiliation(s)
- Parisa Amirifar
- Department of Molecular Oncology, Cancer Biology Evolution Program, H. Lee Moffitt Cancer Center, Tampa, FL, USA
| | - Joseph Kissil
- Department of Molecular Oncology, Cancer Biology Evolution Program, H. Lee Moffitt Cancer Center, Tampa, FL, USA.
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15
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Tholen LE, Latta F, Martens JHA, Hoenderop JGJ, de Baaij JHF. Transcription factor HNF1β controls a transcriptional network regulating kidney cell structure and tight junction integrity. Am J Physiol Renal Physiol 2023; 324:F211-F224. [PMID: 36546837 DOI: 10.1152/ajprenal.00199.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Mutations in the hepatocyte nuclear factor (HNF)1β gene (HNF1B) cause autosomal dominant tubulointerstitial kidney disease, a rare and heterogeneous disease characterized by renal cysts and/or malformation, maturity-onset diabetes of the young, hypomagnesemia, and hypokalemia. The electrolyte disturbances may develop in the distal part of the nephron, which is important for fine-tuning of Mg2+ and Ca2+ reabsorption. Therefore, we aimed to study the transcriptional network directed by HNF1β in the distal part of the nephron. We combined HNF1β chromatin immunoprecipitation-sequencing and mRNA expression data to identify direct targets of HNF1β in a renal distal convoluted tubule cell line (mpkDCT). Gene Ontology term pathway analysis demonstrated enrichment of cell polarity, cell-cell junction, and cytoskeleton pathways in the dataset. Genes directly and indirectly regulated by HNF1β within these pathways included members of the apical and basolateral polarity complexes including Crumbs protein homolog 3 (Crb3), partitioning defective 6 homolog-β (Pard6b), and LLGL Scribble cell polarity complex component 2 (Llgl2). In monolayers of mouse inner medullary collecting duct 3 cells expressing dominant negative Hnf1b, tight junction integrity was compromised, as observed by reduced transepithelial electrical resistance values and increased permeability for fluorescein (0.4 kDa) compared with wild-type cells. Expression of dominant negative Hnf1b also led to a decrease in height (30%) and an increase in surface (58.5%) of cells grown on membranes. Moreover, three-dimensional spheroids formed by cells expressing dominant negative Hnf1b were reduced in size compared with wild-type spheroids (30%). Together, these findings demonstrate that HNF1β directs a transcriptional network regulating tight junction integrity and cell structure in the distal part of the nephron.NEW & NOTEWORTHY Genetic defects in transcription factor hepatocyte nuclear factor (HNF)1β cause a heterogeneous disease characterized by electrolyte disturbances, kidney cysts, and diabetes. By combining RNA-sequencing and HNF1β chromatin immunoprecipitation-sequencing data, we identified new HNF1β targets that were enriched for cell polarity pathways. Newly discovered targets included members of polarity complexes Crb3, Pard6b, and Llgl2. Functional assays in kidney epithelial cells demonstrated decreased tight junction integrity and a loss of typical cuboidal morphology in mutant Hnf1b cells.
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Affiliation(s)
- Lotte E Tholen
- Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Femke Latta
- Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Joost H A Martens
- Department of Molecular Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - Joost G J Hoenderop
- Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jeroen H F de Baaij
- Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
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16
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CircAMOTL1 RNA and AMOTL1 Protein: Complex Functions of AMOTL1 Gene Products. Int J Mol Sci 2023; 24:ijms24032103. [PMID: 36768425 PMCID: PMC9916871 DOI: 10.3390/ijms24032103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 01/25/2023] Open
Abstract
The complexity of the cellular proteome facilitates the control of a wide range of cellular processes. Non-coding RNAs, including microRNAs and long non-coding RNAs, greatly contribute to the repertoire of tools used by cells to orchestrate various functions. Circular RNAs (circRNAs) constitute a specific class of non-coding RNAs that have recently emerged as a widely generated class of molecules produced from many eukaryotic genes that play essential roles in regulating cellular processes in health and disease. This review summarizes current knowledge about circRNAs and focuses on the functions of AMOTL1 circRNAs and AMOTL1 protein. Both products from the AMOTL1 gene have well-known functions in physiology, cancer, and other disorders. Using AMOTL1 as an example, we illustrate how focusing on both circRNAs and proteins produced from the same gene contributes to a better understanding of gene functions.
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17
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Yadunandanan Nair N, Samuel V, Ramesh L, Marib A, David DT, Sundararaman A. Actin cytoskeleton in angiogenesis. Biol Open 2022; 11:bio058899. [PMID: 36444960 PMCID: PMC9729668 DOI: 10.1242/bio.058899] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2024] Open
Abstract
Actin, one of the most abundant intracellular proteins in mammalian cells, is a critical regulator of cell shape and polarity, migration, cell division, and transcriptional response. Angiogenesis, or the formation of new blood vessels in the body is a well-coordinated multi-step process. Endothelial cells lining the blood vessels acquire several new properties such as front-rear polarity, invasiveness, rapid proliferation and motility during angiogenesis. This is achieved by changes in the regulation of the actin cytoskeleton. Actin remodelling underlies the switch between the quiescent and angiogenic state of the endothelium. Actin forms endothelium-specific structures that support uniquely endothelial functions. Actin regulators at endothelial cell-cell junctions maintain the integrity of the blood-tissue barrier while permitting trans-endothelial leukocyte migration. This review focuses on endothelial actin structures and less-recognised actin-mediated endothelial functions. Readers are referred to other recent reviews for the well-recognised roles of actin in endothelial motility, barrier functions and leukocyte transmigration. Actin generates forces that are transmitted to the extracellular matrix resulting in vascular matrix remodelling. In this review, we attempt to synthesize our current understanding of the roles of actin in vascular morphogenesis. We speculate on the vascular bed specific differences in endothelial actin regulation and its role in the vast heterogeneity in endothelial morphology and function across the various tissues of our body.
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Affiliation(s)
- Nidhi Yadunandanan Nair
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
| | - Victor Samuel
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
| | - Lariza Ramesh
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
| | - Areeba Marib
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
| | - Deena T. David
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
| | - Ananthalakshmy Sundararaman
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India695014
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18
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A current overview of RhoA, RhoB, and RhoC functions in vascular biology and pathology. Biochem Pharmacol 2022; 206:115321. [DOI: 10.1016/j.bcp.2022.115321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/17/2022] [Accepted: 10/18/2022] [Indexed: 11/24/2022]
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19
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Maeso-Alonso L, Alonso-Olivares H, Martínez-García N, López-Ferreras L, Villoch-Fernández J, Puente-Santamaría L, Colas-Algora N, Fernández-Corona A, Lorenzo-Marcos ME, Jiménez B, Holmgren L, Wilhelm M, Millan J, Del Peso L, Claesson-Welsh L, Marques MM, Marin MC. p73 is required for vessel integrity controlling endothelial junctional dynamics through Angiomotin. Cell Mol Life Sci 2022; 79:535. [PMID: 36180740 PMCID: PMC9525397 DOI: 10.1007/s00018-022-04560-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 08/26/2022] [Accepted: 09/14/2022] [Indexed: 11/30/2022]
Abstract
Preservation of blood vessel integrity, which is critical for normal physiology and organ function, is controlled at multiple levels, including endothelial junctions. However, the mechanism that controls the adequate assembly of endothelial cell junctions is not fully defined. Here, we uncover TAp73 transcription factor as a vascular architect that orchestrates transcriptional programs involved in cell junction establishment and developmental blood vessel morphogenesis and identify Angiomotin (AMOT) as a TAp73 direct transcriptional target. Knockdown of p73 in endothelial cells not only results in decreased Angiomotin expression and localization at intercellular junctions, but also affects its downstream function regarding Yes-associated protein (YAP) cytoplasmic sequestration upon cell–cell contact. Analysis of adherens junctional morphology after p73-knockdown in human endothelial cells revealed striking alterations, particularly a sharp increase in serrated junctions and actin bundles appearing as stress fibers, both features associated with enhanced barrier permeability. In turn, stabilization of Angiomotin levels rescued those junctional defects, confirming that TAp73 controls endothelial junction dynamics, at least in part, through the regulation of Angiomotin. The observed defects in monolayer integrity were linked to hyperpermeability and reduced transendothelial electric resistance. Moreover, p73-knockout retinas showed a defective sprout morphology coupled with hemorrhages, highlighting the physiological relevance of p73 regulation in the maintenance of vessel integrity in vivo. We propose a new model in which TAp73 acts as a vascular architect integrating transcriptional programs that will impinge with Angiomotin/YAP signaling to maintain junctional dynamics and integrity, while balancing endothelial cell rearrangements in angiogenic vessels.
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Affiliation(s)
- Laura Maeso-Alonso
- Instituto de Biomedicina y Departamento de Biología Molecular, Universidad de León, 24071, León, Spain
| | - Hugo Alonso-Olivares
- Instituto de Biomedicina y Departamento de Biología Molecular, Universidad de León, 24071, León, Spain
| | - Nicole Martínez-García
- Instituto de Biomedicina y Departamento de Producción Animal, Universidad de León, 24071, León, Spain
| | - Lorena López-Ferreras
- Instituto de Biomedicina y Departamento de Biología Molecular, Universidad de León, 24071, León, Spain
| | - Javier Villoch-Fernández
- Instituto de Biomedicina y Departamento de Biología Molecular, Universidad de León, 24071, León, Spain
| | - Laura Puente-Santamaría
- Departamento de Bioquímica, Universidad Autónoma de Madrid (UAM), Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM), Madrid, Spain
| | | | | | | | - Benilde Jiménez
- Departamento de Bioquímica, Universidad Autónoma de Madrid (UAM), Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM), Madrid, Spain.,IdiPaz, Instituto de Investigación Sanitaria del Hospital Universitario La Paz, Madrid, Spain
| | - Lars Holmgren
- Department of Oncology-Pathology, Bioclinicum, Karolinska Institutet, 17164, Stockholm, Sweden
| | - Margareta Wilhelm
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, 171 65, Stockholm, Sweden
| | - Jaime Millan
- Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM), Madrid, Spain
| | - Luis Del Peso
- Departamento de Bioquímica, Universidad Autónoma de Madrid (UAM), Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM), Madrid, Spain.,IdiPaz, Instituto de Investigación Sanitaria del Hospital Universitario La Paz, Madrid, Spain
| | - Lena Claesson-Welsh
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Margarita M Marques
- Instituto de Desarrollo Ganadero y Sanidad Animal, y Departamento de Producción Animal, Universidad de León, 24071, León, Spain
| | - Maria C Marin
- Instituto de Biomedicina y Departamento de Biología Molecular, Universidad de León, 24071, León, Spain.
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20
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Boyd RJ, Olson TL, Zook JD, Stein D, Aceves M, Lin WH, Craciunescu FM, Hansen DT, Anastasiadis PZ, Singharoy A, Fromme P. Characterization and computational simulation of human Syx, a RhoGEF implicated in glioblastoma. FASEB J 2022; 36:e22378. [PMID: 35639414 PMCID: PMC9262375 DOI: 10.1096/fj.202101808rr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 05/10/2022] [Accepted: 05/13/2022] [Indexed: 12/04/2022]
Abstract
Structural discovery of guanine nucleotide exchange factor (GEF) protein complexes is likely to become increasingly relevant with the development of new therapeutics targeting small GTPases and development of new classes of small molecules that inhibit protein‐protein interactions. Syx (also known as PLEKHG5 in humans) is a RhoA GEF implicated in the pathology of glioblastoma (GBM). Here we investigated protein expression and purification of ten different human Syx constructs and performed biophysical characterizations and computational studies that provide insights into why expression of this protein was previously intractable. We show that human Syx can be expressed and isolated and Syx is folded as observed by circular dichroism (CD) spectroscopy and actively binds to RhoA as determined by co‐elution during size exclusion chromatography (SEC). This characterization may provide critical insights into the expression and purification of other recalcitrant members of the large class of oncogenic—Diffuse B‐cell lymphoma (Dbl) homology GEF proteins. In addition, we performed detailed homology modeling and molecular dynamics simulations on the surface of a physiologically realistic membrane. These simulations reveal novel insights into GEF activity and allosteric modulation by the plekstrin homology (PH) domain. These newly revealed interactions between the GEF PH domain and the membrane embedded region of RhoA support previously unexplained experimental findings regarding the allosteric effects of the PH domain from numerous activity studies of Dbl homology GEF proteins. This work establishes new hypotheses for structural interactivity and allosteric signal modulation in Dbl homology RhoGEFs.
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Affiliation(s)
- Ryan J Boyd
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Tien L Olson
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - James D Zook
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Derek Stein
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Manuel Aceves
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Wan-Hsin Lin
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Felicia M Craciunescu
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Debra T Hansen
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA.,Center for Innovations in Medicine, Arizona State University, Tempe, Arizona, USA
| | | | - Abhishek Singharoy
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Petra Fromme
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
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21
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Urade R, Chiu YH, Chiu CC, Wu CY. Small GTPases and Their Regulators: A Leading Road toward Blood Vessel Development in Zebrafish. Int J Mol Sci 2022; 23:4991. [PMID: 35563380 PMCID: PMC9099977 DOI: 10.3390/ijms23094991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/27/2022] [Accepted: 04/27/2022] [Indexed: 12/26/2022] Open
Abstract
Members of the Ras superfamily have been found to perform several functions leading to the development of eukaryotes. These small GTPases are divided into five major subfamilies, and their regulators can "turn on" and "turn off" signals. Recent studies have shown that this superfamily of proteins has various roles in the process of vascular development, such as vasculogenesis and angiogenesis. Here, we discuss the role of these subfamilies in the development of the vascular system in zebrafish.
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Affiliation(s)
- Ritesh Urade
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan; (R.U.); (Y.-H.C.)
| | - Yan-Hui Chiu
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan; (R.U.); (Y.-H.C.)
| | - Chien-Chih Chiu
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan; (R.U.); (Y.-H.C.)
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chang-Yi Wu
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan; (R.U.); (Y.-H.C.)
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 804, Taiwan
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22
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Zhang Y, Zhang Y, Kameishi S, Barutello G, Zheng Y, Tobin NP, Nicosia J, Hennig K, Chiu DKC, Balland M, Barker TH, Cavallo F, Holmgren L. The Amot/integrin protein complex transmits mechanical forces required for vascular expansion. Cell Rep 2021; 36:109616. [PMID: 34433061 DOI: 10.1016/j.celrep.2021.109616] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 06/07/2021] [Accepted: 08/05/2021] [Indexed: 12/24/2022] Open
Abstract
Vascular development is a complex multistep process involving the coordination of cellular functions such as migration, proliferation, and differentiation. How mechanical forces generated by cells and transmission of these physical forces control vascular development is poorly understood. Using an endothelial-specific genetic model in mice, we show that deletion of the scaffold protein Angiomotin (Amot) inhibits migration and expansion of the physiological and pathological vascular network. We further show that Amot is required for tip cell migration and the extension of cellular filopodia. Exploiting in vivo and in vitro molecular approaches, we show that Amot binds Talin and is essential for relaying forces between fibronectin and the cytoskeleton. Finally, we provide evidence that Amot is an important component of the endothelial integrin adhesome and propose that Amot integrates spatial cues from the extracellular matrix to form a functional vascular network.
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Affiliation(s)
- Yuanyuan Zhang
- Department of Oncology-Pathology, Bioclinicum, Karolinska Institutet, Stockholm 17164, Sweden
| | - Yumeng Zhang
- Department of Oncology-Pathology, Bioclinicum, Karolinska Institutet, Stockholm 17164, Sweden
| | - Sumako Kameishi
- Department of Oncology-Pathology, Bioclinicum, Karolinska Institutet, Stockholm 17164, Sweden
| | - Giuseppina Barutello
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, Turin 10126, Italy
| | - Yujuan Zheng
- Department of Oncology-Pathology, Bioclinicum, Karolinska Institutet, Stockholm 17164, Sweden
| | - Nicholas P Tobin
- Department of Oncology-Pathology, Bioclinicum, Karolinska Institutet, Stockholm 17164, Sweden
| | - John Nicosia
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Katharina Hennig
- Laboratoire Interdisciplinaire de Physique, Université Joseph Fourier (Grenoble 1), Saint Martin d'Hères Cedex, 38402, France
| | - David Kung-Chun Chiu
- Department of Oncology-Pathology, Bioclinicum, Karolinska Institutet, Stockholm 17164, Sweden
| | - Martial Balland
- Laboratoire Interdisciplinaire de Physique, Université Joseph Fourier (Grenoble 1), Saint Martin d'Hères Cedex, 38402, France
| | - Thomas H Barker
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22904, USA
| | - Federica Cavallo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, Turin 10126, Italy
| | - Lars Holmgren
- Department of Oncology-Pathology, Bioclinicum, Karolinska Institutet, Stockholm 17164, Sweden.
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23
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Najar MA, Modi PK, Ramesh P, Sidransky D, Gowda H, Prasad TSK, Chatterjee A. Molecular Profiling Associated with Calcium/Calmodulin-Dependent Protein Kinase Kinase 2 (CAMKK2)-Mediated Carcinogenesis in Gastric Cancer. J Proteome Res 2021; 20:2687-2703. [PMID: 33844560 DOI: 10.1021/acs.jproteome.1c00008] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Gastric cancer is the fifth most common cancer and the third leading cause of cancer-related death worldwide. We showed previously that calcium/calmodulin-dependent protein kinase kinase 2 (CAMKK2), a serine-threonine kinase, is highly expressed in gastric cancer and leads to progression. In the present study, we identified the molecular networks involved in CAMKK2-mediated progression of gastric adenocarcinoma. Treatment of gastric cancer cell lines with a CAMKK2 inhibitor, STO-609, resulted in decreased cell migration, invasion, and colony-forming ability and a G1/S-phase arrest. In addition, tandem mass tag (TMT)-based quantitative proteomic analysis resulted in the identification of 7609 proteins, of which 219 proteins were found to be overexpressed and 718 downregulated (1.5-fold). Our data identified several key downregulated proteins involved in cell division and cell proliferation, which included DNA replication licensing factors, replication factor C, origin recognition complex, replication protein A and GINS, and mesenchymal markers, upon CAMKK2 inhibition. Immunoblotting and immunofluorescence results showed concordance with our mass spectroscopy data. Taken together, our study supports CAMKK2 as a novel therapeutic target in gastric cancer.
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Affiliation(s)
- Mohd Altaf Najar
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore 575018, India
| | - Prashant Kumar Modi
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore 575018, India
| | - Poornima Ramesh
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore 575018, India
| | - David Sidransky
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, United States
| | - Harsha Gowda
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore 575018, India.,Institute of Bioinformatics, International Technology Park, Bangalore, Karnataka 560066, India.,Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - T S Keshava Prasad
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore 575018, India
| | - Aditi Chatterjee
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore 575018, India.,Institute of Bioinformatics, International Technology Park, Bangalore, Karnataka 560066, India.,Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
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24
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Martin E, Girardello R, Dittmar G, Ludwig A. New insights into the organization and regulation of the apical polarity network in mammalian epithelial cells. FEBS J 2021; 288:7073-7095. [DOI: 10.1111/febs.15710] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/05/2021] [Accepted: 01/11/2021] [Indexed: 12/11/2022]
Affiliation(s)
- Eleanor Martin
- School of Biological Sciences Nanyang Technological University Singapore City Singapore
- Proteomics of Cellular Signaling Luxembourg Institute of Health Strassen Luxembourg
| | - Rossana Girardello
- School of Biological Sciences Nanyang Technological University Singapore City Singapore
- Proteomics of Cellular Signaling Luxembourg Institute of Health Strassen Luxembourg
| | - Gunnar Dittmar
- Proteomics of Cellular Signaling Luxembourg Institute of Health Strassen Luxembourg
- Department of Life Sciences and Medicine University of Luxembourg Luxembourg
| | - Alexander Ludwig
- School of Biological Sciences Nanyang Technological University Singapore City Singapore
- NTU Institute of Structural Biology (NISB) Experimental Medicine Building Nanyang Technological University Singapore City Singapore
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25
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Daulat AM, Audebert S, Wagner M, Camoin L, Borg JP. Identification of PDZ Interactions by Affinity Purification and Mass Spectrometry Analysis. Methods Mol Biol 2021; 2256:17-40. [PMID: 34014514 DOI: 10.1007/978-1-0716-1166-1_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Identification of protein networks becomes indispensable for determining the function of a given protein of interest. Some proteins harbor a PDZ binding motif (PDZBM) located at the carboxy-terminus end. This motif is necessary to recruit PDZ domain proteins which are involved in signaling, trafficking, and maintenance of cell architecture. In the present chapter, we present two complementary approaches (immunopurification and peptide-based purification procedures) followed by mass spectrometry analysis to identify PDZ domain proteins associated to a given protein of interest. As proof of example, we focus our attention on TANC1 which is a scaffold protein harboring a PDZBM at its carboxy-terminus. Using these two approaches, we identified several PDZ domain containing proteins. Some of them were found with both approaches, and some were specifically identified using peptide-based purification procedure. This exemplifies advantages and differences of both strategies to identify PDZ interactions.
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Affiliation(s)
- Avais M Daulat
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe labellisée Ligue 'Cell polarity, cell signaling and cancer', Marseille, France
| | - Stéphane Audebert
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille Protéomique, Marseille, France
| | - Mônica Wagner
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille Protéomique, Marseille, France
| | - Luc Camoin
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille Protéomique, Marseille, France
| | - Jean-Paul Borg
- Institut Universitaire de France (IUF), Paris, France.
- Centre de Recherche en Cancérologie de Marseille, Aix-Marseille University, Inserm, CNRS, Institut Paoli-Calmettes, Marseille, France.
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26
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Wigerius M, Quinn D, Fawcett JP. Emerging roles for angiomotin in the nervous system. Sci Signal 2020; 13:13/655/eabc0635. [PMID: 33109746 DOI: 10.1126/scisignal.abc0635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Angiomotins are a family of molecular scaffolding proteins that function to organize contact points (called tight junctions in vertebrates) between adjacent cells. Some angiomotin isoforms bind to the actin cytoskeleton and are part of signaling pathways that influence cell morphology and migration. Others cooperate with components of the Hippo signaling pathway and the associated networks to control organ growth. The 130-kDa isoform, AMOT-p130, has critical roles in neural stem cell differentiation, dendritic patterning, and synaptic maturation-attributes that are essential for normal brain development and are consistent with its association with autism. Here, we review and discuss the evidence that supports a role for AMOT-p130 in neuronal development in the central nervous system.
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Affiliation(s)
- Michael Wigerius
- Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
| | - Dylan Quinn
- Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - James P Fawcett
- Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada. .,Department of Surgery, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
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27
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Rouaud F, Sluysmans S, Flinois A, Shah J, Vasileva E, Citi S. Scaffolding proteins of vertebrate apical junctions: structure, functions and biophysics. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183399. [DOI: 10.1016/j.bbamem.2020.183399] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 06/05/2020] [Accepted: 06/11/2020] [Indexed: 12/11/2022]
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28
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Li P, Lan P, Liu S, Wang Y, Liu P. Cell Polarity Protein Pals1-Associated Tight Junction Expression Is a Favorable Prognostic Marker in Clear Cell Renal Cell Carcinoma. Front Genet 2020; 11:931. [PMID: 33005169 PMCID: PMC7484473 DOI: 10.3389/fgene.2020.00931] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 07/27/2020] [Indexed: 12/24/2022] Open
Abstract
Introduction: The Pals1-associated tight junction (PATJ) is a Crumbs (CRB) complex component that regulates epithelial cell apico-basal polarity and directional migration. This study assessed PATJ expression in clear cell renal cell carcinoma (ccRCC) vs. normal tissues and associated with ccRCC progression and prognosis. Methods: The effects of PATJ knockdown were investigated on regulation of normal kidney epithelial cell viability and protein expression in vitro. The PATJ mRNA data in ccRCC were obtained from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases and analyzed with UALCAN, LinkedOmics, Kaplan-Meier Plotter, GEPIA, and SurvExpress tools. Immunohistochemistry was performed for PATJ in tissue microarray sections (n = 150 ccRCC and 30 normal renal specimens). Normal human kidney tubular epithelial cell (HKC) cells were transfected with PATJ and negative control siRNA for cell viability CCK-8 assay, flow cytometry, and western blots. Results: The data showed that PATJ mRNA and protein were downregulated in ccRCC tissues and cell lines. Downregulation of PATJ mRNA was associated with male patients, advanced tumor stages, grades, and ccB subtypes as well as poorer overall and disease-free survival of patients. Furthermore, PATJ protein was also significantly downregulated in ccRCC tissues and associated with advanced tumor pathologic, TNM stages and poorer overall. In vitro, knockdown of PATJ expression promoted HKC proliferation and the activation of mitogen-activated protein kinases (MAPK) pathway proteins. Conclusions: This study revealed that a decrease of PATJ in ccRCC, which was associated with male patients, advanced tumor, and poorer survival, suggesting that PATJ may be a useful prognostic biomarker and therapeutic target for ccRCC.
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Affiliation(s)
- Pingping Li
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
- The Key Laboratory for Tumor Precision Medicine of Shaanxi Province, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ping Lan
- Department of Nephrology, Kidney Hospital, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Sheng Liu
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yaochun Wang
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
- The Key Laboratory for Tumor Precision Medicine of Shaanxi Province, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Peijun Liu
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
- The Key Laboratory for Tumor Precision Medicine of Shaanxi Province, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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29
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Brunner P, Hastar N, Kaehler C, Burdzinski W, Jatzlau J, Knaus P. AMOT130 drives BMP-SMAD signaling at the apical membrane in polarized cells. Mol Biol Cell 2019; 31:118-130. [PMID: 31800378 PMCID: PMC6960409 DOI: 10.1091/mbc.e19-03-0179] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The large isoform of the transmembrane protein angiomotin (AMOT130) controls cell proliferation and migration of many cell types. AMOT130 associates to the actin cytoskeleton and regulates tight-junction maintenance and signaling often via endosomal uptake of polarity proteins at tight junctions. AMOT130 is highly polarized and present only at the apical side of polarized cells. Here we show that bone morphogenetic protein (BMP) growth factor signaling and AMOT function are interlinked in apical-basal polarized cells. BMP6 controls AMOT internalization and endosomal trafficking in epithelial cells. AMOT130 interacts with the BMP receptor BMPR2 and facilitates SMAD activation and target gene expression. We further demonstrate that this effect of AMOT on BMP-SMAD signaling is dependent on endocytosis and specific to the apical side of polarized epithelial and endothelial cells. Knockdown of AMOT reduces SMAD signaling only from the apical side of polarized cells, while basolateral BMP-SMAD signaling is unaffected. This allows for the first time interference with BMP signaling in a polarized manner and identifies AMOT130 as a novel BMP signaling regulator.
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Affiliation(s)
- Patrizia Brunner
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195 Berlin, Germany.,Berlin School of Integrative Oncology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Nurcan Hastar
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195 Berlin, Germany.,Berlin-Brandenburg School for Regenerative Therapies, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Christian Kaehler
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195 Berlin, Germany
| | - Wiktor Burdzinski
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195 Berlin, Germany
| | - Jerome Jatzlau
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195 Berlin, Germany.,Berlin-Brandenburg School for Regenerative Therapies, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Petra Knaus
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195 Berlin, Germany.,Berlin-Brandenburg School for Regenerative Therapies, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
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30
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Yang J, Simonneau C, Kilker R, Oakley L, Byrne MD, Nichtova Z, Stefanescu I, Pardeep-Kumar F, Tripathi S, Londin E, Saugier-Veber P, Willard B, Thakur M, Pickup S, Ishikawa H, Schroten H, Smeyne R, Horowitz A. Murine MPDZ-linked hydrocephalus is caused by hyperpermeability of the choroid plexus. EMBO Mol Med 2019; 11:emmm.201809540. [PMID: 30518636 PMCID: PMC6328942 DOI: 10.15252/emmm.201809540] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Though congenital hydrocephalus is heritable, it has been linked only to eight genes, one of which is MPDZ. Humans and mice that carry a truncated version of MPDZ incur severe hydrocephalus resulting in acute morbidity and lethality. We show by magnetic resonance imaging that contrast medium penetrates into the brain ventricles of mice carrying a Mpdz loss‐of‐function mutation, whereas none is detected in the ventricles of normal mice, implying that the permeability of the choroid plexus epithelial cell monolayer is abnormally high. Comparative proteomic analysis of the cerebrospinal fluid of normal and hydrocephalic mice revealed up to a 53‐fold increase in protein concentration, suggesting that transcytosis through the choroid plexus epithelial cells of Mpdz KO mice is substantially higher than in normal mice. These conclusions are supported by ultrastructural evidence, and by immunohistochemistry and cytology data. Our results provide a straightforward and concise explanation for the pathophysiology of Mpdz‐linked hydrocephalus.
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Affiliation(s)
- Junning Yang
- Cardeza Center for Vascular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Claire Simonneau
- Cardeza Center for Vascular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Robert Kilker
- Cardeza Center for Vascular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Laura Oakley
- Department of Neuroscience, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Matthew D Byrne
- Department of Neuroscience, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Zuzana Nichtova
- Department of Pathology, Anatomy and Cell Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Ioana Stefanescu
- Cardeza Center for Vascular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Fnu Pardeep-Kumar
- Department of Radiology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Sushil Tripathi
- Department of Radiology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Eric Londin
- Computational Medicine Center, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | | | - Belinda Willard
- Proteomics Core Facility, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Mathew Thakur
- Department of Radiology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Stephen Pickup
- Department of Radiology, University of Pennsylvania Medical School, Philadelphia, PA, USA
| | - Hiroshi Ishikawa
- Laboratory of Clinical Regenerative Medicine, Department of Neurosurgery, Faculty of Medicine University of Tsukuba, Tsukuba-City, Ibaraki, Japan
| | - Horst Schroten
- Pediatric Infectious Diseases, University Children's Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Richard Smeyne
- Department of Neuroscience, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Arie Horowitz
- Cardeza Center for Vascular Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA .,Department of Cancer Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
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31
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Rojek KO, Krzemień J, Doleżyczek H, Boguszewski PM, Kaczmarek L, Konopka W, Rylski M, Jaworski J, Holmgren L, Prószyński TJ. Amot and Yap1 regulate neuronal dendritic tree complexity and locomotor coordination in mice. PLoS Biol 2019; 17:e3000253. [PMID: 31042703 PMCID: PMC6513106 DOI: 10.1371/journal.pbio.3000253] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 05/13/2019] [Accepted: 04/18/2019] [Indexed: 12/21/2022] Open
Abstract
The angiomotin (Amot)-Yes-associated protein 1 (Yap1) complex plays a major role in regulating the inhibition of cell contact, cellular polarity, and cell growth in many cell types. However, the function of Amot and the Hippo pathway transcription coactivator Yap1 in the central nervous system remains unclear. We found that Amot is a critical mediator of dendritic morphogenesis in cultured hippocampal cells and Purkinje cells in the brain. Amot function in developing neurons depends on interactions with Yap1, which is also indispensable for dendrite growth and arborization in vitro. The conditional deletion of Amot and Yap1 in neurons led to a decrease in the complexity of Purkinje cell dendritic trees, abnormal cerebellar morphology, and impairments in motor coordination. Our results indicate that the function of Amot and Yap1 in dendrite growth does not rely on interactions with TEA domain (TEAD) transcription factors or the expression of Hippo pathway-dependent genes. Instead, Amot and Yap1 regulate dendrite development by affecting the phosphorylation of S6 kinase and its target S6 ribosomal protein.
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Affiliation(s)
- Katarzyna O. Rojek
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Joanna Krzemień
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Hubert Doleżyczek
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Paweł M. Boguszewski
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Leszek Kaczmarek
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Witold Konopka
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Marcin Rylski
- Centre of Postgraduate Medical Education, Warsaw, Poland
- Institute of Psychiatry and Neurology, Warsaw, Poland
| | - Jacek Jaworski
- International Institute of Molecular and Cell Biology, Warsaw, Poland
| | | | - Tomasz J. Prószyński
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
- * E-mail:
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32
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Farrell A, Alahari S, Ermini L, Tagliaferro A, Litvack M, Post M, Caniggia I. Faulty oxygen sensing disrupts angiomotin function in trophoblast cell migration and predisposes to preeclampsia. JCI Insight 2019; 4:127009. [PMID: 30996134 DOI: 10.1172/jci.insight.127009] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 03/14/2019] [Indexed: 12/17/2022] Open
Abstract
Human placenta development and a successful pregnancy is incumbent upon precise oxygen-dependent control of trophoblast migration/invasion. Persistent low oxygen leading to failed trophoblast invasion promotes inadequate spiral artery remodeling, a characteristic of preeclampsia. Angiomotin (AMOT) is a multifaceted scaffolding protein involved in cell polarity and migration, yet its upstream regulation and significance in the human placenta remain unknown. Herein, we show that AMOT is primarily expressed in migratory extravillous trophoblast cells (EVTs) of the intermediate and distal anchoring column. Its expression increases after 10 weeks of gestation when oxygen tension rises and EVT migration/invasion peaks. Time-lapse imaging confirmed that the AMOT 80-kDa isoform promotes migration of trophoblastic JEG3 and HTR-8/SVneo cells. In preeclampsia, however, AMOT expression is decreased and its localization to migratory fetomaternal interface EVTs is disrupted. We demonstrate that Jumonji C domain-containing protein 6 (JMJD6), an oxygen sensor, positively regulates AMOT via oxygen-dependent lysyl hydroxylation. Furthermore, in vitro and ex vivo studies show that transforming growth factor-β (TGF-β) regulates AMOT expression, its interaction with polarity protein PAR6, and its subcellular redistribution from tight junctions to cytoskeleton. Our data reveal an oxygen- and TGF-β-driven migratory function for AMOT in the human placenta, and implicate its deficiency in impaired trophoblast migration that plagues preeclampsia.
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Affiliation(s)
- Abby Farrell
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada.,Institute of Medical Sciences, and
| | - Sruthi Alahari
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada.,Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Leonardo Ermini
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Andrea Tagliaferro
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Michael Litvack
- Program in Translational Medicine, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Martin Post
- Institute of Medical Sciences, and.,Program in Translational Medicine, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Isabella Caniggia
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada.,Institute of Medical Sciences, and.,Department of Physiology, University of Toronto, Toronto, Ontario, Canada.,Department of Obstetrics and Gynecology, University of Toronto, Toronto, Ontario, Canada
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33
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Narahara S, Sakai E, Kadowaki T, Yamaguchi Y, Narahara H, Okamoto K, Asahina I, Tsukuba T. KBTBD11, a novel BTB-Kelch protein, is a negative regulator of osteoclastogenesis through controlling Cullin3-mediated ubiquitination of NFATc1. Sci Rep 2019; 9:3523. [PMID: 30837587 PMCID: PMC6401029 DOI: 10.1038/s41598-019-40240-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 02/12/2019] [Indexed: 01/10/2023] Open
Abstract
Kelch repeat and BTB domain-containing protein 11 (KBTBD11) is a member of the KBTBD subfamily of proteins that possess a BTB domain and Kelch repeats. Despite the presence of the Kbtbd11 gene in mammalian genomes, there are few reports about KBTBD11 at present. In this study, we identified the novel protein KBTBD11 as a negative regulator of osteoclast differentiation. We found that expression of KBTBD11 increased during osteoclastogenesis. Small-interfering-RNA-mediated knockdown of KBTBD11 enhanced osteoclast formation, and markedly increased the expression of several osteoclast marker genes compared with control cells. Conversely, KBTBD11 overexpression impaired osteoclast differentiation, and decreased the expression of osteoclast marker genes. Among six major signaling pathways regulating osteoclast differentiation, KBTBD11 predominantly influenced the nuclear factor of activated T cell cytoplasmic-1 (NFATc1) pathway. Mechanistically, KBTBD11 was found to interact with an E3 ubiquitin ligase, Cullin3. Further experiments involving immunoprecipitation and treatment with MG132, a proteasome inhibitor, showed that the KBTBD11–Cullin3 promotes ubiquitination and degradation of NFATc1 by the proteasome. Considering that NFATc1 is an essential factor for osteoclast differentiation, the KBTBD11 and Cullin3 probably regulate the levels of NFATc1 through the ubiquitin-proteasome degradation system. Thus, KBTBD11 negatively modulates osteoclast differentiation by controlling Cullin3-mediated ubiquitination of NFATc1.
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Affiliation(s)
- Shun Narahara
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan.,Department of Regenerative Oral Surgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan
| | - Eiko Sakai
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan
| | - Tomoko Kadowaki
- Department of Frontier Life Science, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan
| | - Yu Yamaguchi
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan
| | - Haruna Narahara
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan
| | - Kuniaki Okamoto
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan.,Department of Dental Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8525, Japan
| | - Izumi Asahina
- Department of Regenerative Oral Surgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan
| | - Takayuki Tsukuba
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8588, Japan.
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34
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Popov IK, Ray HJ, Skoglund P, Keller R, Chang C. The RhoGEF protein Plekhg5 regulates apical constriction of bottle cells during gastrulation. Development 2018; 145:dev168922. [PMID: 30446627 PMCID: PMC6307888 DOI: 10.1242/dev.168922] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 11/07/2018] [Indexed: 12/12/2022]
Abstract
Apical constriction regulates epithelial morphogenesis during embryonic development, but how this process is controlled is not understood completely. Here, we identify a Rho guanine nucleotide exchange factor (GEF) gene plekhg5 as an essential regulator of apical constriction of bottle cells during Xenopus gastrulation. plekhg5 is expressed in the blastopore lip and its expression is sufficient to induce ectopic bottle cells in epithelia of different germ layers in a Rho-dependent manner. This activity is not shared by arhgef3, which encodes another organizer-specific RhoGEF. Plekhg5 protein is localized in the apical cell cortex via its pleckstrin homology domain, and the GEF activity enhances its apical recruitment. Plekhg5 induces apical actomyosin accumulation and cell elongation. Knockdown of plekhg5 inhibits activin-induced bottle cell formation and endogenous blastopore lip formation in gastrulating frog embryos. Apical accumulation of actomyosin, apical constriction and bottle cell formation fail to occur in these embryos. Taken together, our data indicate that transcriptional regulation of plekhg5 expression at the blastopore lip determines bottle cell morphology via local polarized activation of Rho by Plekhg5, which stimulates apical actomyosin activity to induce apical constriction.
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Affiliation(s)
- Ivan K Popov
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Heather J Ray
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Paul Skoglund
- Biology Department, University of Virginia, Charlottesville, VA 22903, USA
| | - Ray Keller
- Biology Department, University of Virginia, Charlottesville, VA 22903, USA
| | - Chenbei Chang
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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35
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Abstract
Angiogenesis is a complex, multistep process involving dynamic changes in endothelial cell (EC) shapes and behaviors, especially in specialized cell types such as tip cells (with active filopodial extensions), stalk cells (with less motility) and phalanx cells (with stable junction connections). The Hippo-Yes-associated protein (YAP)/ transcription activator with PDZ binding motif (TAZ) signaling plays a critical role in development, regeneration and organ size by regulating cell-cell contact and actin cytoskeleton dynamics. Recently, with the finding that YAP is expressed in the front edge of the developing retinal vessels, Hippo-YAP/TAZ signaling has emerged as a new pathway for blood vessel development. Intriguingly, the LATS1/2-mediated angiomotin (AMOT) family and YAP/TAZ activities contribute to EC shapes and behaviors by spatiotemporally modulating actin cytoskeleton dynamics and EC junction stability. Herein, we summarize the recent understanding of the role of Hippo-YAP/TAZ signaling in the processes of EC sprouting and junction maturation in angiogenesis.
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Affiliation(s)
- Jeong Ae Park
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University; Initiative for Biological Function & Systems, BK21 PLUS, Yonsei University, Seoul 03722, Korea
| | - Young-Guen Kwon
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University; Initiative for Biological Function & Systems, BK21 PLUS, Yonsei University, Seoul 03722, Korea
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36
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Pires HR, Boxem M. Mapping the Polarity Interactome. J Mol Biol 2018; 430:3521-3544. [DOI: 10.1016/j.jmb.2017.12.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 12/14/2017] [Accepted: 12/18/2017] [Indexed: 12/11/2022]
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37
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Szymborska A, Gerhardt H. Hold Me, but Not Too Tight-Endothelial Cell-Cell Junctions in Angiogenesis. Cold Spring Harb Perspect Biol 2018; 10:cshperspect.a029223. [PMID: 28851748 DOI: 10.1101/cshperspect.a029223] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Endothelial cell-cell junctions must perform seemingly incompatible tasks during vascular development-providing stable connections that prevent leakage, while allowing dynamic cellular rearrangements during sprouting, anastomosis, lumen formation, and functional remodeling of the vascular network. This review aims to highlight recent insights into the molecular mechanisms governing endothelial cell-cell adhesion in the context of vascular development.
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Affiliation(s)
- Anna Szymborska
- Integrative Vascular Biology Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), partner site Berlin
| | - Holger Gerhardt
- Integrative Vascular Biology Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125, Berlin, Germany.,Vascular Patterning Laboratory, Center for Cancer Biology, VIB, Department of Oncology, KU Leuven, 3000 Leuven, Belgium.,DZHK (German Centre for Cardiovascular Research), partner site Berlin.,Berlin Institute of Health (BIH), 10178 Berlin, Germany
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38
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Ma C, Zhao JZ, Lin RT, Zhou L, Chen YN, Yu LJ, Shi TY, Wang M, Liu MM, Liu YR, Zhang T. Combined overexpression of cadherin 6, cadherin 11 and cluster of differentiation 44 is associated with lymph node metastasis and poor prognosis in oral squamous cell carcinoma. Oncol Lett 2018; 15:9498-9506. [PMID: 29805672 DOI: 10.3892/ol.2018.8509] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 02/28/2018] [Indexed: 12/23/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) is a highly invasive lesion that frequently metastasizes to the cervical lymph nodes and is associated with a poor prognosis. Several adhesion factors, including cadherin 6 (CDH6), cadherin 11 (CDH11) and cluster of differentiation 44 (CD44), have been reported to be involved in the invasion and metastasis of multiple types of cancer. Therefore, the aim of the present study was to determine the expression of CDH6, CDH11 and CD44 in tumor tissues from patients with OSCC, and whether this was associated with the metastasis and survival of OSCC. The mRNA expression of the human tumor metastasis-related cytokines was examined by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) in OSCC tumors with or without lymph node metastasis (n=10/group). The expression of CDH6, CDH11 and CD44 in 101 OSCC and 10 normal oral mucosa samples was examined by immunohistochemical staining. The association between overall and disease-specific survival times of patients with OSCC and the expression of these three proteins was evaluated using Kaplan-Meier curves and the log-rank test. RT-qPCR results indicated that the mRNA expression of CDH6, CDH11 and CD44 was increased in OSCC patients with lymph node metastasis (2.93-, 2.01- and 1.92-fold; P<0.05). Overexpression of CDH6, CDH11 and CD44 was observed in 31/35 (89%), 25/35 (71%) and 31/35 (89%) patients, respectively. The number of OSCC patients with lymph node metastasis exhibiting CDH6, CDH11 and CD44 overexpression was significantly higher than the number of patients without lymph node metastasis exhibiting overexpression of these proteins (P=0.017, P=0.038 and P=0.007, respectively). OSCC patients with high co-expression of CDH6, CDH11 and CD44 exhibited lower disease-specific survival times (P=0.047; χ2=3.933) when compared with OSCC patients with low co-expression of these adhesion factors. CDH6, CDH11 and CD44 serve important roles in OSCC metastasis and the combined use of these factors as biomarkers may improve the accuracy of the prediction of cancer metastases and prognosis.
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Affiliation(s)
- Chao Ma
- Department of Stomatology, Peking Union Medical College Hospital, Beijing 100730, P.R. China
| | - Ji-Zhi Zhao
- Department of Stomatology, Peking Union Medical College Hospital, Beijing 100730, P.R. China
| | - Run-Tai Lin
- Department of Stomatology, Peking Union Medical College Hospital, Beijing 100730, P.R. China
| | - Lian Zhou
- Department of Stomatology, Peking Union Medical College Hospital, Beijing 100730, P.R. China
| | - Yong-Ning Chen
- Department of Stomatology, Peking Union Medical College Hospital, Beijing 100730, P.R. China
| | - Li-Jiang Yu
- Department of Stomatology, Peking Union Medical College Hospital, Beijing 100730, P.R. China
| | - Tian-Yin Shi
- Department of Stomatology, Peking Union Medical College Hospital, Beijing 100730, P.R. China
| | - Mu Wang
- Department of Stomatology, Peking Union Medical College Hospital, Beijing 100730, P.R. China
| | - Man-Man Liu
- Department of Stomatology, Peking Union Medical College Hospital, Beijing 100730, P.R. China
| | - Yao-Ran Liu
- Department of Stomatology, Peking Union Medical College Hospital, Beijing 100730, P.R. China
| | - Tao Zhang
- Department of Stomatology, Peking Union Medical College Hospital, Beijing 100730, P.R. China
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Huang T, Zhou Y, Zhang J, Cheng ASL, Yu J, To KF, Kang W. The physiological role of Motin family and its dysregulation in tumorigenesis. J Transl Med 2018; 16:98. [PMID: 29650031 PMCID: PMC5898069 DOI: 10.1186/s12967-018-1466-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 03/28/2018] [Indexed: 11/30/2022] Open
Abstract
Members in Motin family, or Angiomotins (AMOTs), are adaptor proteins that localize in the membranous, cytoplasmic or nuclear fraction in a cell context-dependent manner. They control the bioprocesses such as migration, tight junction formation, cell polarity, and angiogenesis. Emerging evidences have demonstrated that AMOTs participate in cancer initiation and progression. Many of the previous studies have focused on the involvement of AMOTs in Hippo-YAP1 pathway. However, it has been controversial for years that AMOTs serve as either positive or negative growth regulators in different cancer types because of the various cellular origins. The molecular mechanisms of these opposite roles of AMOTs remain elusive. This review comprehensively summarized how AMOTs function physiologically and how their dysregulation promotes or inhibits tumorigenesis. Better understanding the functional roles of AMOTs in cancers may lead to an improvement of clinical interventions as well as development of novel therapeutic strategies for cancer patients.
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Affiliation(s)
- Tingting Huang
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Oncology in South China, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China.,Institute of Digestive Disease, Partner State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China.,Li Ka Shing Institute of Health Science, Sir Y.K. Pao Cancer Center, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China.,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People's Republic of China
| | - Yuhang Zhou
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Oncology in South China, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China.,Institute of Digestive Disease, Partner State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China.,Li Ka Shing Institute of Health Science, Sir Y.K. Pao Cancer Center, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China
| | - Jinglin Zhang
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Oncology in South China, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China.,Institute of Digestive Disease, Partner State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China.,Li Ka Shing Institute of Health Science, Sir Y.K. Pao Cancer Center, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China
| | - Alfred S L Cheng
- Institute of Digestive Disease, Partner State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China.,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People's Republic of China.,School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Jun Yu
- Institute of Digestive Disease, Partner State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China.,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People's Republic of China.,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, People's Republic of China
| | - Ka Fai To
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Oncology in South China, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China. .,Institute of Digestive Disease, Partner State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China. .,Li Ka Shing Institute of Health Science, Sir Y.K. Pao Cancer Center, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China. .,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People's Republic of China.
| | - Wei Kang
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Oncology in South China, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China. .,Institute of Digestive Disease, Partner State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China. .,Li Ka Shing Institute of Health Science, Sir Y.K. Pao Cancer Center, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong, People's Republic of China. .,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People's Republic of China.
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40
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Angiomotin regulates prostate cancer cell proliferation by signaling through the Hippo-YAP pathway. Oncotarget 2018; 8:10145-10160. [PMID: 28052036 PMCID: PMC5354648 DOI: 10.18632/oncotarget.14358] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 12/13/2016] [Indexed: 02/05/2023] Open
Abstract
Angiomotin (AMOT) is a family of proteins found to be a component of the apical junctional complex of vertebrate epithelial cells and is recently found to play important roles in neurofibromatosis type 2 (NF-2). Whether AMOT plays a role in prostate cancer (PCa) is unknown. AMOT is expressed as two isoforms, AMOTp80 and AMOTp130, which has a 409 aa N-terminal domain that is absent in AMOTp80. Both AMOTp80 and AMOTp130 are expressed in LNCaP and C4-2B4, but at a low to undetectable level in PC3, DU145, and BPH1 cells. Further study showed that AMOTp130 and AMOTp80 have distinct functions in PCa cells. We found that AMOTp80, but not AMOT p130, functioned as a tumor promoter by enhancing PCa cell proliferation. Mechanistic studies showed that AMOTp80 signaled through the Hippo pathway by promoting nuclear translocation of YAP, resulting in an increased expression of YAP target protein BMP4. Moreover, inhibition of BMP receptor activity by LDN-193189 abrogates AMOTp80-mediated cell proliferation. Together, this study reveals a novel mechanism whereby the AMOTp80-Merlin-MST1-LATS-YAP-BMP4 pathway leads to AMOTp80-induced tumor cell proliferation.
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Chen ZL, Yang J, Shen YW, Li ST, Wang X, Lv M, Wang BY, Li P, Zhao W, Qiu RY, Liu Y, Liu PJ, Yang J. AmotP130 regulates Rho GTPase and decreases breast cancer cell mobility. J Cell Mol Med 2018; 22:2390-2403. [PMID: 29377471 PMCID: PMC5867092 DOI: 10.1111/jcmm.13533] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 12/14/2017] [Indexed: 12/17/2022] Open
Abstract
Angiomotin (Amot) is a newly discovered, multifunctional protein that is involved in cell migration and angiogenesis. However, the role of its isoform, AmotP130, in the regulation of cytoskeleton and metastasis of breast cancer, is unclear. The aim of this study was to investigate the role of AmotP130 in the reorganization of the actin cytoskeleton and the changes of morphology in breast cancer cells through the Rho pathway that influences the invasion and migration of cells. The results suggested that AmotP130 suppressed the invasion ability through remodelling the cytoskeleton of breast cancer cells, including the actin fibre organization and focal adhesion protein turnover. Global transcriptome changes in breast cancer cells following knockdown of AmotP130 identified pathways related with the cytoskeleton and cell motility that involved the Rho GTPase family. From database analyses, changes in the Rho GTPase family of proteins were identified as possible prognostic factors in patients with breast cancer. We have been suggested that AmotP130 suppressed the invasion ability through remodelling of the cytoskeleton of breast cancer cells, involving regulation of the Rho pathway. The cytoskeleton-related pathway components may provide novel, clinically therapeutic targets for breast cancer treatment.
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Affiliation(s)
- Zhe-Ling Chen
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jiao Yang
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yan-Wei Shen
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shu-Ting Li
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xin Wang
- Department of Oncology, Shangluo Central Hospital, Shangluo, Shaanxi, China
| | - Meng Lv
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Bi-Yuan Wang
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Pan Li
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Wen Zhao
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Rui-Yue Qiu
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yu Liu
- Department of Biology & Biochemistry, University of Houston, Houston, TX, USA
| | - Pei-Jun Liu
- Center for Translational Medicine, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi, China
| | - Jin Yang
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Wigerius M, Quinn D, Diab A, Clattenburg L, Kolar A, Qi J, Krueger SR, Fawcett JP. The polarity protein Angiomotin p130 controls dendritic spine maturation. J Cell Biol 2018; 217:715-730. [PMID: 29317530 PMCID: PMC5800806 DOI: 10.1083/jcb.201705184] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 10/31/2017] [Accepted: 11/30/2017] [Indexed: 01/06/2023] Open
Abstract
Wigerius et al. identify the polarity protein AMOT-130 as vital for dendritic spine morphogenesis. They show that reduced Lats1 kinase activity in the neonatal brain is required for the recruitment of AMOT-130 to postsynaptic compartments to stabilize dendritic spines. The actin cytoskeleton is essential for the structural changes in dendritic spines that lead to the formation of new synapses. Although the molecular mechanisms underlying spine formation are well characterized, the events that drive spine maturation during development are largely unknown. In this study, we demonstrate that Angiomotin (AMOT-130) is necessary for spine stabilization. AMOT-130 is enriched in mature dendritic spines and functions to stabilize the actin cytoskeleton by coupling F-actin to postsynaptic protein scaffolds. These functions of AMOT are transiently restricted during postnatal development by phosphorylation imposed by the kinase Lats1. Our study proposes that AMOT-130 is essential for normal spine morphogenesis and identifies Lats1 as an upstream regulator in this process. Moreover, our findings may link AMOT-130 loss and the related spine defects to neurological disorders.
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Affiliation(s)
- Michael Wigerius
- Department of Pharmacology, Dalhousie University, Halifax, Canada
| | - Dylan Quinn
- Department of Physiology and Biophysics, Dalhousie University, Halifax, Canada
| | - Antonios Diab
- Department of Pharmacology, Dalhousie University, Halifax, Canada
| | | | - Annette Kolar
- Department of Physiology and Biophysics, Dalhousie University, Halifax, Canada
| | - Jiansong Qi
- Department of Pharmacology, Dalhousie University, Halifax, Canada
| | - Stefan R Krueger
- Department of Physiology and Biophysics, Dalhousie University, Halifax, Canada
| | - James P Fawcett
- Department of Pharmacology, Dalhousie University, Halifax, Canada .,Department of Surgery, Dalhousie University, Halifax, Canada
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Lv M, Li S, Luo C, Zhang X, Shen Y, Sui YX, Wang F, Wang X, Yang J, Liu P, Yang J. Angiomotin promotes renal epithelial and carcinoma cell proliferation by retaining the nuclear YAP. Oncotarget 2017; 7:12393-403. [PMID: 26848622 PMCID: PMC4914293 DOI: 10.18632/oncotarget.7161] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 01/23/2016] [Indexed: 12/17/2022] Open
Abstract
Renal cell carcinoma (RCC) is one of the common tumors in the urinary system without effective therapies. Angiomotin (Amot) can interact with Yes-associated protein (YAP) to either stimulate or inhibit YAP activity, playing a potential role in cell proliferation. However, the role of Amot in regulating the proliferation of renal epithelial and RCC cells is unknown. Here, we show that Amot is expressed predominantly in the nucleus of RCC cells and tissues, and in the cytoplasm and nucleus of renal epithelial cells and paracancerous tissues. Furthermore, Amot silencing inhibited proliferation of HK-2 and 786-O cells while Amot upregulation promoted proliferation of ACHN cells. Interestingly, the location of Amot and YAP in RCC clinical samples and cells was similar. Amot interacted with YAP in HK-2 and 786-O cells, particularly in the nucleus. Moreover, Amot silencing mitigated the levels of nuclear YAP in HK-2 and 786-O cells and reduced YAP-related CTGF and Cyr61 expression in 786-O cells. Amot upregulation slightly increased the nuclear YAP and YAP-related gene expression in ACHN cells. Finally, enhanced YAP expression restored proliferation of Amot-silencing 786-O cells. Together, these data indicate that Amot is crucial for the maintenance of nuclear YAP to promote renal epithelial and RCC proliferation.
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Affiliation(s)
- Meng Lv
- Department of Medical Oncology, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Shuting Li
- Department of Medical Oncology, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Changqin Luo
- Department of Gastroenterology, The Central Hospital of Ankang City, Ankang, Shaanxi 725000, P.R. China
| | - Xiaoman Zhang
- Department of Medical Oncology, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yanwei Shen
- Department of Medical Oncology, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yan Xia Sui
- Department of Pathology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, P.R. China
| | - Fan Wang
- Department of Medical Oncology, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xin Wang
- Department of Oncology, Shangluo Central Hospital, Shangluo, Shaanxi, 726000, P.R. China
| | - Jiao Yang
- Department of Medical Oncology, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Peijun Liu
- Center for Translational Medicine, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jin Yang
- Department of Medical Oncology, The First Affiliated Hospital of Xian Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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Vinci G, Buffat C, Simoncini S, Boubred F, Ligi I, Dumont F, Le Bonniec B, Fournier T, Vaiman D, Dignat-George F, Simeoni U. Gestational age-related patterns of AMOT methylation are revealed in preterm infant endothelial progenitors. PLoS One 2017; 12:e0186321. [PMID: 29036193 PMCID: PMC5643051 DOI: 10.1371/journal.pone.0186321] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 09/28/2017] [Indexed: 12/16/2022] Open
Abstract
Objective Preterm birth is associated with altered angiogenesis and with increased risk of cardiovascular dysfunction and hypertension at adulthood. We previously demonstrated that in preterm newborns circulating cord blood endothelial progenitor cells (ECFC), responsible for angio/vasculogenesis, are reduced in number and display altered angiogenic properties. Altered angiogenic function was associated with a decreased expression of pro-angiogenic genes, among which the AMOT gene which is a strong positive regulator of angiogenesis. Such dysregulation may be related to epigenetic factors. In this study we analyse the methylation profiling of the AMOT gene during development, through a comparative analysis of the cord blood ECFC of preterm newborns and their term counterpart. Methods We used both cloning-sequencing and pyrosequencing experiments to perform a comparative analysis of the DNA methylation profile of the promoter CpG island of AMOT gene in the cord blood ECFC of 16 preterm newborns (28–35 weeks gestational age-GA) and 15 term newborns (>37 weeks GA). Results Twenty nine clones (obtained from 2 term newborns) and forty clones (obtained from 3 preterm newborns) were sequenced. The AMOT gene methylation rate was significantly higher in preterm compared to term newborns (4.5% versus 2.5% respectively: χ2 = 3.84; P = 1.8 10−02). Bisulfite pyrosequencing identified four CpG dinucleotides with significantly higher methylation levels in preterm newborns. This CpG-targeted methylation significantly decreased with increasing gestational age. Conclusions These findings highlight importance of pro-angiogenic AMOT gene methylation in ECFC, suggesting that epigenetic mechanisms may control the regulation of angiogenesis during development. Therefore they pave the way to specific short term and long term complications of preterm birth by altered angiogenesis.
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Affiliation(s)
- Giovanna Vinci
- Cochin Institute, Inserm U1016, CNRS 8104, Université Paris Descartes, 27 Rue du Faubourg Saint-Jacques, Paris, France
- UMR-S1139 Inserm, Université Paris Descartes, Faculté de Pharmacie, Paris, France
- * E-mail:
| | - Christophe Buffat
- Department of Neonatology Hôpital La Conception, 147 Boulevard Baille, Marseille, France
| | - Stéphanie Simoncini
- UMR 1076 INSERM, Aix-Marseille Université, 27 Boulevard Jean Moulin, Marseille, France
| | - Farid Boubred
- Department of Neonatology Hôpital La Conception, 147 Boulevard Baille, Marseille, France
- UMR 1076 INSERM, Aix-Marseille Université, 27 Boulevard Jean Moulin, Marseille, France
| | - Isabelle Ligi
- Department of Neonatology Hôpital La Conception, 147 Boulevard Baille, Marseille, France
- UMR 1076 INSERM, Aix-Marseille Université, 27 Boulevard Jean Moulin, Marseille, France
| | - Florent Dumont
- IPSIT—Institut Paris-Saclay d'Innovation Thérapeutique UPSud—UFR Pharmacie, 5 rue J.B. Clément, Châtenay-Malabry, France
| | - Bernard Le Bonniec
- UMR_S1140 Inserm, Université Paris Descartes; Faculté de Pharmacie, Paris, France
| | - Thierry Fournier
- UMR-S1139 Inserm, Université Paris Descartes, Faculté de Pharmacie, Paris, France
| | - Daniel Vaiman
- Cochin Institute, Inserm U1016, CNRS 8104, Université Paris Descartes, 27 Rue du Faubourg Saint-Jacques, Paris, France
| | | | - Umberto Simeoni
- Division of Pediatrics and DOHaD Laboratory, CHUV and Université de Lausanne, rue du Bugnon 46, Lausanne, Switzerland
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Iwatake M, Nishishita K, Okamoto K, Tsukuba T. The Rho-specific guanine nucleotide exchange factor Plekhg5 modulates cell polarity, adhesion, migration, and podosome organization in macrophages and osteoclasts. Exp Cell Res 2017; 359:415-430. [PMID: 28847484 DOI: 10.1016/j.yexcr.2017.08.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 08/06/2017] [Accepted: 08/17/2017] [Indexed: 12/28/2022]
Abstract
Osteoclasts are multinucleated bone-resorbing cells that are formed by fusion of monocyte/macrophage lineage. Osteoclasts and macrophages generate podosomes that are actin-based dynamic organelles implicated in cell adhesion, spreading, migration, and degradation. However, the detailed mechanisms of podosome organization remain unknown. Here, we identified the Rho-specific guanine-nucleotide exchange factor (Rho-GEF) Plekhg5 as an up-regulated gene during differentiation of osteoclasts from macrophages. Knockdown of Plekhg5 with small interfering RNA in both macrophages and osteoclasts induced larger cell formation with impaired cell polarity and resulted in an elongated and flattened shape. In macrophages, Plekhg5 depletion enhanced random migration, but impaired directional migration, adhesion, and matrix degradation. Plekhg5 in osteoclasts affected random migration, podosome organization, and bone resorption. Plekhg5 depletion affected signaling and localization of several Rho downstream effectors. In fact, end-binding protein 1 (EB1), cofilin and vinculin were abnormally localized in Plekhg5-depleted cells, and mDia1 and LIM kinase (LIMK)1 were upregulated in Plekhg5-depleted cells compared with control cells. However, overexpression of Plekhg5 in macrophages induced an increase in its mRNA level, but failed to increase the protein level, indicating that overexpressed Plekhg5 was degraded in macrophages but not HEK293T cells. Thus, Plekhg5 affects cell polarity, migration, adhesion, degradation, and podosome organization in macrophages and osteoclasts.
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Affiliation(s)
- Mayumi Iwatake
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan
| | - Kazuhisa Nishishita
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan
| | - Kuniaki Okamoto
- Department of Dental Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Takayuki Tsukuba
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan.
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Hildebrand S, Hultin S, Subramani A, Petropoulos S, Zhang Y, Cao X, Mpindi J, Kalloniemi O, Johansson S, Majumdar A, Lanner F, Holmgren L. The E-cadherin/AmotL2 complex organizes actin filaments required for epithelial hexagonal packing and blastocyst hatching. Sci Rep 2017; 7:9540. [PMID: 28842668 PMCID: PMC5572699 DOI: 10.1038/s41598-017-10102-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 08/03/2017] [Indexed: 12/13/2022] Open
Abstract
Epithelial cells connect via cell-cell junctions to form sheets of cells with separate cellular compartments. These cellular connections are essential for the generation of cellular forms and shapes consistent with organ function. Tissue modulation is dependent on the fine-tuning of mechanical forces that are transmitted in part through the actin connection to E-cadherin as well as other components in the adherens junctions. In this report we show that p100 amotL2 forms a complex with E-cadherin that associates with radial actin filaments connecting cells over multiple layers. Genetic inactivation or depletion of amotL2 in epithelial cells in vitro or zebrafish and mouse in vivo, resulted in the loss of contractile actin filaments and perturbed epithelial packing geometry. We further showed that AMOTL2 mRNA and protein was expressed in the trophectoderm of human and mouse blastocysts. Genetic inactivation of amotL2 did not affect cellular differentiation but blocked hatching of the blastocysts from the zona pellucida. These results were mimicked by treatment with the myosin II inhibitor blebbistatin. We propose that the tension generated by the E-cadherin/AmotL2/actin filaments plays a crucial role in developmental processes such as epithelial geometrical packing as well as generation of forces required for blastocyst hatching.
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Affiliation(s)
- Sebastian Hildebrand
- Department of Clinical Sciences, Intervention and Technology (CLINTEC), Karolinska Institutet and Division of Obstetrics and Gynecology, Karolinska University Hospital, Huddinge, Sweden.,Department of Oncology-Pathology, Cancer Centrum Karolinska (CCK), Karolinska Institutet, Stockholm, Sweden
| | - Sara Hultin
- Department of Oncology-Pathology, Cancer Centrum Karolinska (CCK), Karolinska Institutet, Stockholm, Sweden
| | - Aravindh Subramani
- Department of Oncology-Pathology, Cancer Centrum Karolinska (CCK), Karolinska Institutet, Stockholm, Sweden
| | - Sophie Petropoulos
- Department of Clinical Sciences, Intervention and Technology (CLINTEC), Karolinska Institutet and Division of Obstetrics and Gynecology, Karolinska University Hospital, Huddinge, Sweden
| | - Yuanyuan Zhang
- Department of Oncology-Pathology, Cancer Centrum Karolinska (CCK), Karolinska Institutet, Stockholm, Sweden
| | - Xiaofang Cao
- Department of Medical Biochemistry and Microbiology, Uppsala Biomedical Center (BMC), Uppsala University, Uppsala, Sweden
| | - John Mpindi
- Medical Biotechnology, VTT Technical Research Centre of Finland, Turku, Finland.,Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | - Olli Kalloniemi
- Medical Biotechnology, VTT Technical Research Centre of Finland, Turku, Finland.,Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | - Staffan Johansson
- Department of Medical Biochemistry and Microbiology, Uppsala Biomedical Center (BMC), Uppsala University, Uppsala, Sweden
| | - Arindam Majumdar
- Department of Oncology-Pathology, Cancer Centrum Karolinska (CCK), Karolinska Institutet, Stockholm, Sweden.,Eli Lilly and Company, Lilly Corporate Center, Indianapolis, IN, 46285, USA
| | - Fredrik Lanner
- Department of Clinical Sciences, Intervention and Technology (CLINTEC), Karolinska Institutet and Division of Obstetrics and Gynecology, Karolinska University Hospital, Huddinge, Sweden.
| | - Lars Holmgren
- Department of Oncology-Pathology, Cancer Centrum Karolinska (CCK), Karolinska Institutet, Stockholm, Sweden.
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Michgehl U, Pavenstädt H, Vollenbröker B. Cross talk between the Crumbs complex and Hippo signaling in renal epithelial cells. Pflugers Arch 2017; 469:917-926. [PMID: 28612137 DOI: 10.1007/s00424-017-2004-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 05/18/2017] [Accepted: 05/19/2017] [Indexed: 12/12/2022]
Abstract
Cell polarity has a crucial role in organizing cells into tissues and in mediating transport processes and cell-cell communication. Especially the cells of the nephron require apicobasal polarity to establish and maintain their barrier function. The Crumbs complex including the integral membrane protein Crumbs, as well as Pals1 and Patj, is essential for the establishment of apicobasal polarity. The interactions of the core proteins and the interplay with other processes have been characterized in various epithelial cell lines in detail. Notably, Crb2 and Crb3 are expressed within the kidney and play an important role in the proper function of podocytes and tubules, respectively. The interaction of polarity proteins and components of the Hippo pathway-an evolutionarily highly conserved kinase cascade regulating cell proliferation, organ size, and tissue regeneration-has been discovered recently. Here, we discuss potential molecular and physiological links between the Crumbs complex and the Hippo pathway in renal cells.
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Affiliation(s)
- U Michgehl
- Internal Medicine D, University Hospital of Muenster, Albert-Schweitzer-Campus 1, A14, D-48149, Muenster, Germany.
| | - H Pavenstädt
- Internal Medicine D, University Hospital of Muenster, Albert-Schweitzer-Campus 1, A14, D-48149, Muenster, Germany
| | - B Vollenbröker
- Internal Medicine D, University Hospital of Muenster, Albert-Schweitzer-Campus 1, A14, D-48149, Muenster, Germany
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Moleirinho S, Hoxha S, Mandati V, Curtale G, Troutman S, Ehmer U, Kissil JL. Regulation of localization and function of the transcriptional co-activator YAP by angiomotin. eLife 2017; 6. [PMID: 28464980 PMCID: PMC5415356 DOI: 10.7554/elife.23966] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 04/06/2017] [Indexed: 02/06/2023] Open
Abstract
The Hippo-YAP pathway is a central regulator of cell contact inhibition, proliferation and death. There are conflicting reports regarding the role of Angiomotin (Amot) in regulating this pathway. While some studies suggest a YAP-inhibitory function other studies indicate Amot is required for YAP activity. Here, we describe an Amot-dependent complex comprised of Amot, YAP and Merlin. The phosphorylation of Amot at Serine 176 shifts localization of this complex to the plasma membrane, where it associates with the tight-junction proteins Pals1/PATJ and E-cadherin. Conversely, hypophosphorylated Amot shifts localization of the complex to the nucleus, where it facilitates the association of YAP and TEAD, induces transcriptional activation of YAP target genes and promotes YAP-dependent cell proliferation. We propose that phosphorylation of AmotS176 is a critical post-translational modification that suppresses YAP’s ability to promote cell proliferation and tumorigenesis by altering the subcellular localization of an essential YAP co-factor. DOI:http://dx.doi.org/10.7554/eLife.23966.001 Cells in animals and other multi-cellular organisms need to know when and where they should grow and divide. Individual cells communicate with their surrounding environment and each other via signaling pathways such as the Hippo-YAP pathway, which stimulates cells to grow and therefore influences the size of organs. When the Hippo part of the pathway is active it causes a protein known as YAP to move out of a compartment in the cell called the nucleus. Inside the nucleus, YAP helps to activate genes that promote cell growth. If the Hippo pathway can no longer respond to cues from the environment, YAP becomes over-active and can contribute to the development of various cancers. Therefore researchers are trying to better understand how it is regulated. Many signals both from inside and outside the cell influence YAP activity. For example, some signals block YAP from entering the nucleus, whereas others cause YAP to be broken down entirely. Several studies have recently identified a signal protein called angiomotin as a regulator of YAP. However, the studies provide conflicting reports as to whether angiomotin promotes or inhibits cell growth. Like many other proteins, angiomotin can be tagged with a small molecule called a phosphate group that can alter its activity. Moleirinho, Hoxha et al. studied human cells containing versions of angiomotin that mimic different forms of the protein with or without the phosphate. The experiments indicate that when a phosphate is attached at a particular position (known as serine 176), angiomotin predominantly interacts with YAP and another protein called Merlin at the cell surface. On the other hand, when angiomotin does not have a phosphate attached to it, all three proteins can move into the nucleus, where YAP is able to activate genes and promote cell growth. Overall, these findings indicate that adding a phosphate group to angiomotin can act as a switch to regulate where in the cell it and YAP are found and thus, whether YAP is active. Future experiments will investigate which enzymes add the phosphate group to serine 176, and when they are able to do so. DOI:http://dx.doi.org/10.7554/eLife.23966.002
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Affiliation(s)
- Susana Moleirinho
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, United States
| | - Sany Hoxha
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, United States
| | - Vinay Mandati
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, United States
| | - Graziella Curtale
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, United States
| | - Scott Troutman
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, United States
| | - Ursula Ehmer
- Department of Medicine II, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Joseph L Kissil
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, United States
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Sewduth RN, Kovacic H, Jaspard-Vinassa B, Jecko V, Wavasseur T, Fritsch N, Pernot M, Jeaningros S, Roux E, Dufourcq P, Couffinhal T, Duplàa C. PDZRN3 destabilizes endothelial cell-cell junctions through a PKCζ-containing polarity complex to increase vascular permeability. Sci Signal 2017; 10:10/464/eaag3209. [DOI: 10.1126/scisignal.aag3209] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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50
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Xiao J, Jin K, Wang J, Ma J, Zhang J, Jiang N, Wang H, Luo X, Fei J, Wang Z, Yang X, Ma D. Conditional knockout of TFPI-1 in VSMCs of mice accelerates atherosclerosis by enhancing AMOT/YAP pathway. Int J Cardiol 2016; 228:605-614. [PMID: 27875740 DOI: 10.1016/j.ijcard.2016.11.195] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 11/06/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND Tissue factor pathway inhibitor-1 (TFPI-1) has multiple functions and its precise role and molecular mechanism during the development of atherosclerosis are not clear. OBJECTIVES To determine the effect and molecular mechanism of TFPI-1 deficiency in vascular smooth muscle cells (VSMCs) in atherosclerosis in the apolipoprotein E knockout (ApoE-/-) mouse. METHODS AND RESULTS A mouse model with a conditional knockout of TFPI-1 in VSMCs in an atherosclerosis-prone background (ApoE-/-) was generated. Mice were fed a high fat diet for 18weeks and were then euthanized. Arterial trees and aortas were stained with Sudan IV and were labeled via immunohistochemistry. Cell proliferation and migration of VSMCs in atherosclerotic plaques were assessed. More atherosclerotic lesions and higher levels of proliferation and migration of VSMCs were observed in TFPI-1fl/fl/Sma-Cre+ApoE-/-mice. An interaction between TFPI-1 and angiomotin (AMOT) was identified in human VSMCs by mass spectrometry, immunoprecipitation and co-localization analyses. Signal pathway changes were detected by Western blot analysis, and the expression levels of target genes were determined by real-time PCR. Decreased phosphorylation of AMOT and Yes-associated protein 1 (YAP) in TFPI-1fl/fl/Sma-Cre+ApoE-/- mice resulted in increased expression levels of snail family zinc finger 2 (SLUG) and connective tissue growth factor (CTGF), which are target genes of the Hippo signaling pathway that have been verified as atherosclerosis candidate genes. CONCLUSION Deficiency in TFPI-1 in the VSMCs of ApoE-/- mice accelerated the development of atherosclerosis by promoting the proliferation and migration of VSMCs which may be caused by the decreased phosphorylation of AMOT and YAP. SIGNIFICANCE TFPI-1 has been found to has an anticoagulant activity, induce cell apoptosis and prevent cell proliferation. For the first time, we constructed a line of conditional knockout mice in which the TPFI-1 gene is deleted in VSMCs. We found that TFPI-1 deficiency clearly promoted the development of atherosclerosis when these mice were crossed into an ApoE-/-background. One notable feature of atherosclerosis is the proliferation and migration of smooth muscle cells. Previous reports involved TFPI-1 do not completely explain the proliferation and migration of VSMCs because heterozygous TF deficient (TF±) mice bred in an ApoE-/- background did not show diminished atherosclerosis compared to TF+/+ mice bred in the same background. Our results first confirmed that TFPI-1 interacts with AMOT, which led to a decrease in the phosphorylation of YAP and further increased the genes expression of the proliferation and migration involved. Our results further confirmed that atherosclerosis was a localized disease.
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Affiliation(s)
- Jiajun Xiao
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Collaborative Innovation Center of Genetics and Development, Department of Biochemistry and Molecular Biology, Institute of Biomedical Sciences, School of Basic Medical Sciences, Fudan University, Shanghai 20032, China
| | - Kaiyue Jin
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Collaborative Innovation Center of Genetics and Development, Department of Biochemistry and Molecular Biology, Institute of Biomedical Sciences, School of Basic Medical Sciences, Fudan University, Shanghai 20032, China
| | - Jiping Wang
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Collaborative Innovation Center of Genetics and Development, Department of Biochemistry and Molecular Biology, Institute of Biomedical Sciences, School of Basic Medical Sciences, Fudan University, Shanghai 20032, China
| | - Jing Ma
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Collaborative Innovation Center of Genetics and Development, Department of Biochemistry and Molecular Biology, Institute of Biomedical Sciences, School of Basic Medical Sciences, Fudan University, Shanghai 20032, China
| | - Jin Zhang
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Collaborative Innovation Center of Genetics and Development, Department of Biochemistry and Molecular Biology, Institute of Biomedical Sciences, School of Basic Medical Sciences, Fudan University, Shanghai 20032, China
| | - Nan Jiang
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Collaborative Innovation Center of Genetics and Development, Department of Biochemistry and Molecular Biology, Institute of Biomedical Sciences, School of Basic Medical Sciences, Fudan University, Shanghai 20032, China
| | - Huijun Wang
- Cardiovascular Center, Children's Hospital Affiliated to Fudan University, Shanghai 200032, China
| | - Xinping Luo
- Department of Cardiovascular Medicine, Huashan Hospital Affiliated to Fudan University, Shanghai 200032, China
| | - Jian Fei
- Shanghai Research Centre for Model Organisms, Shanghai 201203,China
| | - Zhugang Wang
- Shanghai Research Centre for Model Organisms, Shanghai 201203,China
| | - Xiao Yang
- Institute of Geriatrics, PLA Postgraduate School of Medicine, PLA General Hospital, Beijing 100853, China
| | - Duan Ma
- Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Collaborative Innovation Center of Genetics and Development, Department of Biochemistry and Molecular Biology, Institute of Biomedical Sciences, School of Basic Medical Sciences, Fudan University, Shanghai 20032, China; Cardiovascular Center, Children's Hospital Affiliated to Fudan University, Shanghai 200032, China.
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