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Jeensuk S, Ortega MS, Saleem M, Hawryluk B, Scheffler TL, Hansen PJ. Actions of WNT family member 5A to regulate characteristics of development of the bovine preimplantation embryo†. Biol Reprod 2022; 107:928-944. [PMID: 35765196 PMCID: PMC9562107 DOI: 10.1093/biolre/ioac127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/24/2022] [Accepted: 06/14/2022] [Indexed: 11/13/2022] Open
Abstract
WNT signaling is important for regulation of embryonic development. The most abundant WNT gene expressed in the bovine endometrium during the preimplantation period is WNT5A. One objective was to determine whether WNT5A regulates competence of the bovine preimplantation embryo to become a blastocyst and alters the number of cells in the inner cell mass and trophectoderm. A second objective was to delineate features of the cell-signaling mechanisms involved in WNT5A actions. WNT5A caused a concentration-dependent increase in the proportion of embryos developing to the blastocyst stage and in the number of inner cell mass cells in the resultant blastocysts. A concentration of 200 ng/mL was most effective, and a higher concentration of 400 ng/mL was not stimulatory. Bovine serum albumin in culture reduced the magnitude of effects of WNT5A on development to the blastocyst stage. WNT5A affected expression of 173 genes at the morula stage; all were upregulated by WNT5A. Many of the upregulated genes were associated with cell signaling. Actions of WNT5A on development to the blastocyst stage were suppressed by a Rho-associated coiled-coil kinase (ROCK) signaling inhibitor, suggesting that WNT5A acts through Ras homology gene family member A (RhoA)/ROCK signaling. Other experiments indicated that actions of WNT5A are independent of the canonical β-catenin signaling pathway and RAC1/c-Jun N-terminal kinase (JNK) signaling. This is the first report outlining the actions of WNT5A to alter the development of the mammalian embryo. These findings provide insights into how embryokines regulate maternal-embryonic communication.
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Affiliation(s)
- Surawich Jeensuk
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
- Department of Livestock Development, Bureau of Biotechnology in Livestock Production, Pathum Thani, Thailand
| | - M Sofia Ortega
- Division of Animal Sciences, University of Missouri, Columbia, MO, USA
| | - Muhammad Saleem
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Briana Hawryluk
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
| | - Tracy L Scheffler
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
| | - Peter J Hansen
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
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2
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Ko SB, Mihara E, Park Y, Roh K, Kang C, Takagi J, Bang I, Choi HJ. Functional role of the Frizzled linker domain in the Wnt signaling pathway. Commun Biol 2022; 5:421. [PMID: 35513706 PMCID: PMC9072438 DOI: 10.1038/s42003-022-03370-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 04/14/2022] [Indexed: 12/20/2022] Open
Abstract
The Wnt signaling pathway plays a critical role in the developmental and physiological processes of metazoans. We previously reported that the Frizzled4 (FZD4) linker domain plays an important role in Norrin binding and signaling. However, the question remains whether the FZD linker contributes to Wnt signaling in general. Here, we show that the FZD linker is involved in Wnt binding and affects downstream Wnt signaling. A FZD4 chimera, in which the linker was swapped with that of the non-canonical receptor FZD6, impairs the binding with WNT3A and suppresses the recruitment of LRP6 and Disheveled, resulting in reduced canonical signaling. A similar effect was observed for non-canonical signaling. A FZD6 chimera containing the FZD1 linker showed reduced WNT5A binding and impaired signaling in ERK, JNK, and AKT mediated pathways. Altogether, our results suggest that the FZD linker plays an important role in specific Wnt binding and intracellular Wnt signaling.
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Affiliation(s)
- Seung-Bum Ko
- Department of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Emiko Mihara
- Laboratory for Protein Synthesis and Expression, Institute for Protein Research, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yedarm Park
- Department of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kyeonghwan Roh
- Department of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Chanhee Kang
- Department of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Junichi Takagi
- Laboratory for Protein Synthesis and Expression, Institute for Protein Research, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Injin Bang
- Department of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea.
- Laura and Isaac Perlmutter Cancer Center, New York University Langone Medical Center, New York, 10016, NY, USA.
| | - Hee-Jung Choi
- Department of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea.
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3
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Chmielowiec J, Szlachcic WJ, Yang D, Scavuzzo MA, Wamble K, Sarrion-Perdigones A, Sabek OM, Venken KJT, Borowiak M. Human pancreatic microenvironment promotes β-cell differentiation via non-canonical WNT5A/JNK and BMP signaling. Nat Commun 2022; 13:1952. [PMID: 35414140 PMCID: PMC9005503 DOI: 10.1038/s41467-022-29646-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 03/21/2022] [Indexed: 12/24/2022] Open
Abstract
In vitro derivation of pancreatic β-cells from human pluripotent stem cells holds promise as diabetes treatment. Despite recent progress, efforts to generate physiologically competent β-cells are still hindered by incomplete understanding of the microenvironment's role in β-cell development and maturation. Here, we analyze the human mesenchymal and endothelial primary cells from weeks 9-20 fetal pancreas and identify a time point-specific microenvironment that permits β-cell differentiation. Further, we uncover unique factors that guide in vitro development of endocrine progenitors, with WNT5A markedly improving human β-cell differentiation. WNT5A initially acts through the non-canonical (JNK/c-JUN) WNT signaling and cooperates with Gremlin1 to inhibit the BMP pathway during β-cell maturation. Interestingly, we also identify the endothelial-derived Endocan as a SST+ cell promoting factor. Overall, our study shows that the pancreatic microenvironment-derived factors can mimic in vivo conditions in an in vitro system to generate bona fide β-cells for translational applications.
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Affiliation(s)
- Jolanta Chmielowiec
- Molecular and Cellular Biology Department, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Wojciech J Szlachcic
- Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, ul. Uniwersytetu Poznanskiego 6, 61-614, Poznan, Poland
| | - Diane Yang
- Molecular and Cellular Biology Department, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Marissa A Scavuzzo
- Program in Developmental Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Katrina Wamble
- Stem Cell and Regenerative Medicine Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Alejandro Sarrion-Perdigones
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Omaima M Sabek
- Department of Surgery, The Methodist Hospital, Houston, TX, USA.,Weill Cornell Medical College, New York, NY, USA
| | - Koen J T Venken
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX, 77030, USA.,McNair Medical Institute, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Malgorzata Borowiak
- Molecular and Cellular Biology Department, Baylor College of Medicine, Houston, TX, 77030, USA. .,Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, ul. Uniwersytetu Poznanskiego 6, 61-614, Poznan, Poland. .,Program in Developmental Biology, Baylor College of Medicine, Houston, TX, 77030, USA. .,Stem Cell and Regenerative Medicine Center, Baylor College of Medicine, Houston, TX, 77030, USA. .,McNair Medical Institute, Baylor College of Medicine, Houston, TX, 77030, USA.
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4
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Yamane M, Seo J, Zhou Y, Asaba T, Tu S, Nanmo A, Kageyama T, Fukuda J. Effects of the PI3K/Akt signaling pathway on the hair inductivity of human dermal papilla cells in hair beads. J Biosci Bioeng 2022; 134:55-61. [DOI: 10.1016/j.jbiosc.2022.03.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/24/2022] [Accepted: 03/28/2022] [Indexed: 12/18/2022]
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5
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Wan X, Chen S, Fang Y, Zuo W, Cui J, Xie S. Mesenchymal stem cell-derived extracellular vesicles suppress the fibroblast proliferation by downregulating FZD6 expression in fibroblasts via micrRNA-29b-3p in idiopathic pulmonary fibrosis. J Cell Physiol 2020; 235:8613-8625. [PMID: 32557673 DOI: 10.1002/jcp.29706] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/04/2020] [Accepted: 03/30/2020] [Indexed: 12/12/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF), a progressive and fatal lung disease, usually leads to an irreversible distortion of the pulmonary structure. The functional roles of bone marrow-derived mesenchymal stem cells (BMSC)-secreted extracellular vesicles (EVs) in fibroblasts have been implicated, yet their actions in the treatment of IPF are not fully understood. This study investigated the roles of BMSC-derived EVs expressing miR-29b-3p in fibroblasts in IPF treatment. EVs derived from BMSCs were successfully isolated and could be internalized by pulmonary fibroblasts, and Cell Counting Kit-8 (CCK-8) and Transwell assay results identified that EVs inhibited the activation of fibroblast in IPF. miR-29b-3p, frizzled 6 (FZD6), α-skeletal muscle actin (α-SMA), and Collagen I expressions were examined, which revealed that miR-29b-3p was poorly expressed and FZD6, α-SMA, and Collagen I were overexpressed in pulmonary tissues. Dual-luciferase reporter assay results demonstrated that miR-29b-3p could inversely target FZD6 expression. The gain- and loss-of-function assays were conducted to determine regulatory effects of FZD6 and miR-29b-3p on IPF. CCK-8 and Transwell assays results displayed that BMSCs-derived EVs overexpressing miR-29b-3p contributed to inhibited pulmonary interstitial fibroblast proliferation, migration, invasion, and differentiation. Furthermore, the effects of BMSCs-derived EVs overexpressing miR-29b-3p on IPF progression were assessed in vivo, which confirmed the repressive effects of BMSCs-derived EVs overexpressing miR-29b-3p on IPF progression. Collectively, BMSCs-derived EVs overexpressing miR-29b-3p relieve IPF through FZD6.
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Affiliation(s)
- Xuan Wan
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Shuyun Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yan Fang
- Department of Cardiovascular Medicine, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Wei Zuo
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jian Cui
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Shiguang Xie
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
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Martin-Medina A, Lehmann M, Burgy O, Hermann S, Baarsma HA, Wagner DE, De Santis MM, Ciolek F, Hofer TP, Frankenberger M, Aichler M, Lindner M, Gesierich W, Guenther A, Walch A, Coughlan C, Wolters P, Lee JS, Behr J, Königshoff M. Increased Extracellular Vesicles Mediate WNT5A Signaling in Idiopathic Pulmonary Fibrosis. Am J Respir Crit Care Med 2020; 198:1527-1538. [PMID: 30044642 DOI: 10.1164/rccm.201708-1580oc] [Citation(s) in RCA: 123] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Rationale: Idiopathic pulmonary fibrosis (IPF) is a lethal lung disease characterized by lung epithelial cell injury, increased (myo)fibroblast activation, and extracellular matrix deposition. Extracellular vesicles (EVs) regulate intercellular communication by carrying a variety of signaling mediators, including WNT (wingless/integrated) proteins. The relevance of EVs in pulmonary fibrosis and their potential contribution to disease pathogenesis, however, remain unexplored.Objectives: To characterize EVs and study the role of EV-bound WNT signaling in IPF.Methods: We isolated EVs from BAL fluid (BALF) from experimental lung fibrosis as well as samples from IPF, non-IPF interstitial lung disease (ILD), non-ILD, and healthy volunteers from two independent cohorts. EVs were characterized by transmission electron microscopy, nanoparticle tracking analysis, and Western blotting. Primary human lung fibroblasts (phLFs) were used for EV isolation and analyzed by metabolic activity assays, cell counting, quantitative PCR, and Western blotting upon WNT gain- and loss-of-function studies.Measurements and Main Results: We found increased EVs, particularly exosomes, in BALF from experimental lung fibrosis as well as from patients with IPF. WNT5A was secreted on EVs in lung fibrosis and induced by transforming growth factor-β in primary human lung fibroblasts. The phLF-derived EVs induced phLF proliferation, which was attenuated by WNT5A silencing and antibody-mediated inhibition and required intact EV structure. Similarly, EVs from IPF BALF induced phLF proliferation, which was mediated by WNT5A.Conclusions: Increased EVs function as carriers for signaling mediators, such as WNT5A, in IPF and thus contribute to disease pathogenesis. Characterization of EV secretion and composition may lead to novel approaches to diagnose and develop treatments for pulmonary fibrosis.
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Affiliation(s)
- Aina Martin-Medina
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Mareike Lehmann
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Olivier Burgy
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, and
| | - Sarah Hermann
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Hoeke A Baarsma
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Darcy E Wagner
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Martina M De Santis
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Florian Ciolek
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Thomas P Hofer
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany.,Center for Thoracic Surgery, Asklepios Biobank for Lung Diseases, Asklepios Clinic Munich-Gauting, Munich, Germany
| | - Marion Frankenberger
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Michaela Aichler
- Institute of Pathology, Research Unit Analytical Pathology, Helmholtz Center Munich, Munich, Germany
| | - Michael Lindner
- Center for Thoracic Surgery, Asklepios Biobank for Lung Diseases, Asklepios Clinic Munich-Gauting, Munich, Germany
| | - Wolfgang Gesierich
- Center for Thoracic Surgery, Asklepios Biobank for Lung Diseases, Asklepios Clinic Munich-Gauting, Munich, Germany
| | - Andreas Guenther
- Department of Internal Medicine, Universities of Giessen and Marburg Lung Center, Justus Liebig University of Giessen, member of the German Center for Lung Research, Giessen, Germany.,Agaplesion Lung Clinic Waldhof Elgershausen, Greifenstein, Germany.,European IPF Network and European IPF Registry, Giessen, Germany; and
| | - Axel Walch
- Institute of Pathology, Research Unit Analytical Pathology, Helmholtz Center Munich, Munich, Germany
| | - Christina Coughlan
- Department of Neurology, University of Colorado Denver, Aurora, Colorado
| | - Paul Wolters
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California San Francisco, San Francisco, California
| | - Joyce S Lee
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, and
| | - Jürgen Behr
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany.,Center for Thoracic Surgery, Asklepios Biobank for Lung Diseases, Asklepios Clinic Munich-Gauting, Munich, Germany
| | - Melanie Königshoff
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany.,Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, and
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7
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Frenquelli M, Caridi N, Antonini E, Storti F, Viganò V, Gaviraghi M, Occhionorelli M, Bianchessi S, Bongiovanni L, Spinelli A, Marcatti M, Belloni D, Ferrero E, Karki S, Brambilla P, Martinelli-Boneschi F, Colla S, Ponzoni M, DePinho RA, Tonon G. The WNT receptor ROR2 drives the interaction of multiple myeloma cells with the microenvironment through AKT activation. Leukemia 2019; 34:257-270. [DOI: 10.1038/s41375-019-0486-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 04/08/2019] [Accepted: 04/10/2019] [Indexed: 12/27/2022]
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8
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Roy JP, Halford MM, Stacker SA. The biochemistry, signalling and disease relevance of RYK and other WNT-binding receptor tyrosine kinases. Growth Factors 2018; 36:15-40. [PMID: 29806777 DOI: 10.1080/08977194.2018.1472089] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The receptor tyrosine kinases (RTKs) are a well-characterized family of growth factor receptors that have central roles in human disease and are frequently therapeutically targeted. The RYK, ROR, PTK7 and MuSK subfamilies make up an understudied subset of WNT-binding RTKs. Numerous developmental, stem cell and pathological roles of WNTs, in particular WNT5A, involve signalling via these WNT receptors. The WNT-binding RTKs have highly context-dependent signalling outputs and stimulate the β-catenin-dependent, planar cell polarity and/or WNT/Ca2+ pathways. RYK, ROR and PTK7 members have a pseudokinase domain in their intracellular regions. Alternative signalling mechanisms, including proteolytic cleavage and protein scaffolding functions, have been identified for these receptors. This review explores the structure, signalling, physiological and pathological roles of RYK, with particular attention paid to cancer and the possibility of therapeutically targeting RYK. The other WNT-binding RTKs are compared with RYK throughout to highlight the similarities and differences within this subset of WNT receptors.
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Affiliation(s)
- James P Roy
- a Tumour Angiogenesis and Microenvironment Program , Peter MacCallum Cancer Centre , Melbourne , Australia
- b Sir Peter MacCallum Department of Oncology , The University of Melbourne , Parkville , Australia
| | - Michael M Halford
- a Tumour Angiogenesis and Microenvironment Program , Peter MacCallum Cancer Centre , Melbourne , Australia
| | - Steven A Stacker
- a Tumour Angiogenesis and Microenvironment Program , Peter MacCallum Cancer Centre , Melbourne , Australia
- b Sir Peter MacCallum Department of Oncology , The University of Melbourne , Parkville , Australia
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9
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Thiele S, Rachner TD, Rauner M, Hofbauer LC. WNT5A and Its Receptors in the Bone-Cancer Dialogue. J Bone Miner Res 2016; 31:1488-96. [PMID: 27355180 DOI: 10.1002/jbmr.2899] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/08/2016] [Accepted: 06/24/2016] [Indexed: 12/12/2022]
Abstract
Wnt signaling is critical for tumorigenesis and skeletal remodeling. However, its contribution to the formation of metastatic bone lesions remains poorly defined. One major challenge of unraveling its role in cancer progression is the high complexity of Wnt signaling, which includes numerous ligands, receptors, and inhibitors, with intricate biological effects and specific signaling pathways depending on the cellular context. In this perspective, we summarize the role of the noncanonical Wnt ligand WNT5A in the development and metastatic process of osteotropic cancer entities. We focus on its tumor-suppressive function in breast cancer, tumor promoting effects in melanoma, and ambiguous role in prostate cancer, and discuss potential challenges and opportunities that may be associated with targeting Wnt signaling for cancer therapy and treatment of bone metastases. © 2016 American Society for Bone and Mineral Research.
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Affiliation(s)
- Stefanie Thiele
- Division of Endocrinology and Metabolic Bone Diseases, Department of Medicine III, Technische Universität (TU) Dresden Medical Center, Dresden, Germany
| | - Tilman D Rachner
- Division of Endocrinology and Metabolic Bone Diseases, Department of Medicine III, Technische Universität (TU) Dresden Medical Center, Dresden, Germany
| | - Martina Rauner
- Division of Endocrinology and Metabolic Bone Diseases, Department of Medicine III, Technische Universität (TU) Dresden Medical Center, Dresden, Germany
| | - Lorenz C Hofbauer
- Division of Endocrinology and Metabolic Bone Diseases, Department of Medicine III, Technische Universität (TU) Dresden Medical Center, Dresden, Germany.,German Cancer Consortium (DKTK), partner site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany.,Center for Healthy Aging, Technische Universität (TU) Dresden Medical Center, Dresden, Germany
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10
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Khan AS, Hojjat-Farsangi M, Daneshmanesh AH, Hansson L, Kokhaei P, Österborg A, Mellstedt H, Moshfegh A. Dishevelled proteins are significantly upregulated in chronic lymphocytic leukaemia. Tumour Biol 2016; 37:11947-11957. [DOI: 10.1007/s13277-016-5039-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 03/28/2016] [Indexed: 10/21/2022] Open
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11
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Chen Y, Zhang Y, Deng Q, Shan N, Peng W, Luo X, Zhang H, Baker PN, Tong C, Qi H. Wnt5a inhibited human trophoblast cell line HTR8/SVneo invasion: implications for early placentation and preeclampsia. J Matern Fetal Neonatal Med 2016; 29:3532-8. [DOI: 10.3109/14767058.2016.1138102] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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12
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Kumawat K, Gosens R. WNT-5A: signaling and functions in health and disease. Cell Mol Life Sci 2016; 73:567-87. [PMID: 26514730 PMCID: PMC4713724 DOI: 10.1007/s00018-015-2076-y] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 10/13/2015] [Accepted: 10/15/2015] [Indexed: 12/14/2022]
Abstract
WNT-5A plays critical roles in a myriad of processes from embryonic morphogenesis to the maintenance of post-natal homeostasis. WNT-5A knock-out mice fail to survive and present extensive structural malformations. WNT-5A predominantly activates β-catenin-independent WNT signaling cascade but can also activate β-catenin signaling to relay its diverse cellular effects such as cell polarity, migration, proliferation, cell survival, and immunomodulation. Moreover, aberrant WNT-5A signaling is associated with several human pathologies such as cancer, fibrosis, and inflammation. Thus, owing to its diverse functions, WNT-5A is a crucial signaling molecule currently under intense investigation with efforts to not only delineate its signaling mechanisms and functions in physiological and pathological conditions, but also to develop strategies for its therapeutic targeting.
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Affiliation(s)
- Kuldeep Kumawat
- Department of Molecular Pharmacology, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands.
- Groningen Research Institute for Asthma and COPD, University of Groningen, Groningen, The Netherlands.
| | - Reinoud Gosens
- Department of Molecular Pharmacology, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD, University of Groningen, Groningen, The Netherlands
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13
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Kim JE, Bang SH, Choi JH, Kim CD, Won CH, Lee MW, Chang SE. Interaction of Wnt5a with Notch1 is Critical for the Pathogenesis of Psoriasis. Ann Dermatol 2016; 28:45-54. [PMID: 26848218 PMCID: PMC4737835 DOI: 10.5021/ad.2016.28.1.45] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 05/07/2015] [Accepted: 05/19/2015] [Indexed: 11/29/2022] Open
Abstract
Background Psoriasis is characterized by uncontrolled hyperproliferation, aberrant differentiation, and dermal infiltration of immune cells. Recent studies have reported that Wnt5a and Notch1 signaling are altered in psoriatic skin lesions. Objective We aimed to investigate the interaction of Wnt5a with Notch 1 with respect to inflammation-mediated epidermal hyperproliferation in psoriasis. Methods Expression of Wnt5a and Notch1 signaling-related proteins were examined in psoriatic skin biopsies. Wnt5a was upregulated in human keratinocytes by treating the cells with its recombinant form (rWnt5a). Results In psoriatic lesions, expression of Wnt5a increased while that of Notch1 decreased when compared to that in non-lesional and normal skin. Treatment with rWnt5a increased the proliferation of keratinocytes and increased their secretion of interleukin (IL)-23, IL-12, and tumor necrosis factor (TNF)-α. Further, exposure of keratinocytes to IL-1α, TNF-α, transforming growth factor-α, and interferon-γ downregulated Notch1 as well as HES 1, which is downstream to Notch1, but increased the Wnt5a levels. The upregulated Wnt5a in keratinocytes downregulated both Notch1 and HES1. Conclusion Our data suggest that Wnt5a and Notch1 signaling exert counteracting influences on each other and are involved, in part, in the pathomechanism of psoriasis.
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Affiliation(s)
- Jeong Eun Kim
- Department of Dermatology, Asan Institute for Life Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.; Department of Dermatology, Hanyang University Hospital, Hanyang University College of Medicine, Seoul, Korea
| | - Seung Hyun Bang
- Department of Dermatology, Asan Institute for Life Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jee Ho Choi
- Department of Dermatology, Asan Institute for Life Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Chang Deok Kim
- Department of Dermatology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Chong Hyun Won
- Department of Dermatology, Asan Institute for Life Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Mi Woo Lee
- Department of Dermatology, Asan Institute for Life Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sung Eun Chang
- Department of Dermatology, Asan Institute for Life Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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15
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Newman DR, Sills WS, Hanrahan K, Ziegler A, Tidd KM, Cook E, Sannes PL. Expression of WNT5A in Idiopathic Pulmonary Fibrosis and Its Control by TGF-β and WNT7B in Human Lung Fibroblasts. J Histochem Cytochem 2015; 64:99-111. [PMID: 26538547 DOI: 10.1369/0022155415617988] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 10/22/2015] [Indexed: 12/12/2022] Open
Abstract
The wingless (Wnt) family of signaling ligands contributes significantly to lung development and is highly expressed in patients with usual interstitial pneumonia (UIP). We sought to define the cellular distribution of Wnt5A in the lung tissue of patients with idiopathic pulmonary fibrosis (IPF) and the signaling ligands that control its expression in human lung fibroblasts and IPF myofibroblasts. Tissue sections from 40 patients diagnosed with IPF or UIP were probed for the immunolocalization of Wnt5A. Further, isolated lung fibroblasts from normal or IPF human lungs, adenovirally transduced for the overexpression or silencing of Wnt7B or treated with TGF-β1 or its inhibitor, were analyzed for Wnt5A protein expression. Wnt5A was expressed in IPF lungs by airway and alveolar epithelium, smooth muscle cells, endothelium, and myofibroblasts of fibroblastic foci and throughout the interstitium. Forced overexpression of Wnt7B with or without TGF-β1 treatment significantly increased Wnt5A protein expression in normal human smooth muscle cells and fibroblasts but not in IPF myofibroblasts where Wnt5A was already highly expressed. The results demonstrate a wide distribution of Wnt5A expression in cells of the IPF lung and reveal that it is significantly increased by Wnt7B and TGF-β1, which, in combination, could represent key signaling pathways that modulate the pathogenesis of IPF.
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Affiliation(s)
- Donna R Newman
- Department of Molecular Biomedical Sciences, Center for Comparative Medicine and Translational Research, College of Veterinary Medicine, and Center for Human Health and the Environment, College of Sciences, North Carolina State University, Raleigh, North Carolina (DRN, WSS, KH, AZ, KMT, EC, PLS)
| | - W Shane Sills
- Department of Molecular Biomedical Sciences, Center for Comparative Medicine and Translational Research, College of Veterinary Medicine, and Center for Human Health and the Environment, College of Sciences, North Carolina State University, Raleigh, North Carolina (DRN, WSS, KH, AZ, KMT, EC, PLS)
| | - Katherine Hanrahan
- Department of Molecular Biomedical Sciences, Center for Comparative Medicine and Translational Research, College of Veterinary Medicine, and Center for Human Health and the Environment, College of Sciences, North Carolina State University, Raleigh, North Carolina (DRN, WSS, KH, AZ, KMT, EC, PLS)
| | - Amanda Ziegler
- Department of Molecular Biomedical Sciences, Center for Comparative Medicine and Translational Research, College of Veterinary Medicine, and Center for Human Health and the Environment, College of Sciences, North Carolina State University, Raleigh, North Carolina (DRN, WSS, KH, AZ, KMT, EC, PLS)
| | - Kathleen McGinnis Tidd
- Department of Molecular Biomedical Sciences, Center for Comparative Medicine and Translational Research, College of Veterinary Medicine, and Center for Human Health and the Environment, College of Sciences, North Carolina State University, Raleigh, North Carolina (DRN, WSS, KH, AZ, KMT, EC, PLS)
| | - Elizabeth Cook
- Department of Molecular Biomedical Sciences, Center for Comparative Medicine and Translational Research, College of Veterinary Medicine, and Center for Human Health and the Environment, College of Sciences, North Carolina State University, Raleigh, North Carolina (DRN, WSS, KH, AZ, KMT, EC, PLS)
| | - Philip L Sannes
- Department of Molecular Biomedical Sciences, Center for Comparative Medicine and Translational Research, College of Veterinary Medicine, and Center for Human Health and the Environment, College of Sciences, North Carolina State University, Raleigh, North Carolina (DRN, WSS, KH, AZ, KMT, EC, PLS)
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Aznar N, Midde KK, Dunkel Y, Lopez-Sanchez I, Pavlova Y, Marivin A, Barbazán J, Murray F, Nitsche U, Janssen KP, Willert K, Goel A, Abal M, Garcia-Marcos M, Ghosh P. Daple is a novel non-receptor GEF required for trimeric G protein activation in Wnt signaling. eLife 2015; 4:e07091. [PMID: 26126266 PMCID: PMC4484057 DOI: 10.7554/elife.07091] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 06/01/2015] [Indexed: 12/17/2022] Open
Abstract
Wnt signaling is essential for tissue homeostasis and its dysregulation causes cancer. Wnt ligands trigger signaling by activating Frizzled receptors (FZDRs), which belong to the G-protein coupled receptor superfamily. However, the mechanisms of G protein activation in Wnt signaling remain controversial. In this study, we demonstrate that FZDRs activate G proteins and trigger non-canonical Wnt signaling via the Dishevelled-binding protein, Daple. Daple contains a Gα-binding and activating (GBA) motif, which activates Gαi proteins and an adjacent domain that directly binds FZDRs, thereby linking Wnt stimulation to G protein activation. This triggers non-canonical Wnt responses, that is, suppresses the β-catenin/TCF/LEF pathway and tumorigenesis, but enhances PI3K-Akt and Rac1 signals and tumor cell invasiveness. In colorectal cancers, Daple is suppressed during adenoma-to-carcinoma transformation and expressed later in metastasized tumor cells. Thus, Daple activates Gαi and enhances non-canonical Wnt signaling by FZDRs, and its dysregulation can impact both tumor initiation and progression to metastasis.
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Affiliation(s)
- Nicolas Aznar
- Department of Medicine, University of California, San Diego, San Diego, United States
| | - Krishna K Midde
- Department of Medicine, University of California, San Diego, San Diego, United States
| | - Ying Dunkel
- Department of Medicine, University of California, San Diego, San Diego, United States
| | | | - Yelena Pavlova
- Department of Medicine, University of California, San Diego, San Diego, United States
| | - Arthur Marivin
- Department of Biochemistry, Boston University School of Medicine, Boston, United States
| | - Jorge Barbazán
- Translational Medical Oncology Laboratory, Health Research Institute of Santiago, Servizo Galego de Saúde, Santiago de Compostela, Spain
| | - Fiona Murray
- Department of Medicine, University of California, San Diego, San Diego, United States
| | - Ulrich Nitsche
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Klaus-Peter Janssen
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Karl Willert
- Sanford Consortium for Regenerative Medicine, University of California, San Diego, La Jolla, California, United States
| | - Ajay Goel
- Division of Gastroenterology, Department of Internal Medicine and Charles A Sammons Cancer Center and Baylor Research Institute, Baylor University Medical Center, Dallas, Texas, United States
| | - Miguel Abal
- Translational Medical Oncology Laboratory, Health Research Institute of Santiago, Servizo Galego de Saúde, Santiago de Compostela, Spain
| | - Mikel Garcia-Marcos
- Department of Biochemistry, Boston University School of Medicine, Boston, United States
| | - Pradipta Ghosh
- Department of Medicine, University of California, San Diego, San Diego, United States
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17
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Dijksterhuis JP, Petersen J, Schulte G. WNT/Frizzled signalling: receptor-ligand selectivity with focus on FZD-G protein signalling and its physiological relevance: IUPHAR Review 3. Br J Pharmacol 2014; 171:1195-209. [PMID: 24032637 DOI: 10.1111/bph.12364] [Citation(s) in RCA: 145] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 08/22/2013] [Accepted: 08/25/2013] [Indexed: 12/14/2022] Open
Abstract
The wingless/int1 (WNT)/Frizzled (FZD) signalling pathway controls numerous cellular processes such as proliferation, differentiation, cell-fate decisions, migration and plays a crucial role during embryonic development. Nineteen mammalian WNTs can bind to 10 FZDs thereby activating different downstream pathways such as WNT/β-catenin, WNT/planar cell polarity and WNT/Ca(2+) . However, the mechanisms of signalling specification and the involvement of heterotrimeric G proteins are still unclear. Disturbances in the pathways can lead to various diseases ranging from cancer, inflammatory diseases to metabolic and neurological disorders. Due to the presence of seven-transmembrane segments, evidence for coupling between FZDs and G proteins and substantial structural differences in class A, B or C GPCRs, FZDs were grouped separately in the IUPHAR GPCR database as the class FZD within the superfamily of GPCRs. Recently, important progress has been made pointing to a direct activation of G proteins after WNT stimulation. WNT/FZD and G protein coupling remain to be fully explored, although the basic observation supporting the nature of FZDs as GPCRs is compelling. Because the involvement of different (i) WNTs; (ii) FZDs; and (iii) intracellular binding partners could selectively affect signalling specification, in this review we present the current understanding of receptor/ligand selectivity of FZDs and WNTs. We pinpoint what is known about signalling specification and the physiological relevance of these interactions with special emphasis on FZD-G protein interactions.
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Affiliation(s)
- J P Dijksterhuis
- Section of Receptor Biology and Signaling, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
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18
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Wei W, Sun HH, Li N, Li HY, Li X, Li Q, Shen XH. WNT5A modulates cell cycle progression and contributes to the chemoresistance in pancreatic cancer cells. Hepatobiliary Pancreat Dis Int 2014; 13:529-38. [PMID: 25308364 DOI: 10.1016/s1499-3872(14)60277-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Although there are many studies on the mechanism of chemoresistance in cancers, studies on the relations between WNT5A and chemoresistance in pancreatic cancer are rare. The present study was to examine the role of WNT5A in the regulation of cell cycle progression and in chemo-resistance in pancreatic cancer tissues and cell lines. METHODS Fresh pancreatic cancer and paracarcinoma tissues were obtained from 32 patients. The expressions of WNT5A, AKT/p-AKT and Cyclin D1 were detected by immunohistochemistry, and the correlation between WNT5A expression and clinicopathological characteristics was analyzed. The relationship between WNT5A expression and gemcitabine resistance was studied in PANC-1 and MIAPaCa2 cell lines. The effect of WNT5A on the regulation of cell cycle and gemcitabine cytotoxicity were investigated. The associations among the expressions of p-AKT, Cyclin D1 and WNT5A were also analyzed in cell lines and the effect of WNT5A on restriction-point (R-point) progression was evaluated. RESULTS WNT5A, p-AKT and Cyclin D1 were highly expressed in pancreatic cancer tissues, and the WNT5A expression was correlated with the TNM stages. In vitro, WNT5A expression was associated with gemcitabine chemoresistance. The percentage of cells was increased in G0/G1 phase and decreased in S phase after knockdown of WNT5A in PANC-1. WNT5A promoted Cyclin D1 expression through phosphorylation of AKT which consequently enhanced G1-S transition and gemcitabine resistance. Furthermore, WNT5A enhanced the cell cycle progression toward R-point through regulation of retinoblastoma protein (pRb) and pRb-E2F complex formation. CONCLUSIONS WNT5A induced chemoresistance by regulation of G1-S transition in pancreatic cancer cells. WNT5A might serve as a predictor of gemcitabine response and as a potential target for tumor chemotherapy.
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Affiliation(s)
- Wei Wei
- Department of Pathophysiology, School of Medicine, Nankai University, Tianjin 300071, China; Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin 300060, China.
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19
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Zhang A, He S, Sun X, Ding L, Bao X, Wang N. Wnt5a promotes migration of human osteosarcoma cells by triggering a phosphatidylinositol-3 kinase/Akt signals. Cancer Cell Int 2014; 14:15. [PMID: 24524196 PMCID: PMC3976035 DOI: 10.1186/1475-2867-14-15] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 02/07/2014] [Indexed: 12/31/2022] Open
Abstract
Wnt5a is classified as a non-transforming Wnt family member and plays complicated roles in oncogenesis and cancer metastasis. However, Wnt5a signaling in osteosarcoma progression remains poorly defined. In this study, we found that Wnt5a stimulated the migration of human osteosarcoma cells (MG-63), with the maximal effect at 100 ng/ml, via enhancing phosphorylation of phosphatidylinositol-3 kinase (PI3K)/Akt. PI3K and Akt showed visible signs of basal phosphorylation and elevated phosphorylation at 15 min after stimulation with Wnt5a. Pharmaceutical inhibition of PI3K with LY294002 significantly blocked the Wnt5a-induced activation of Akt (p-Ser473) and decreased Wnt5a-induced cell migration. Akt siRNA remarkably inhibited Wnt5a-induced cell migration. Additionally, Wnt5a does not alter the total expression and phosphorylation of β-catenin in MG-63 cells. Taken together, we demonstrated for the first time that Wnt5a promoted osteosarcoma cell migration via the PI3K/Akt signaling pathway. These findings could provide a rationale for designing new therapy targeting osteosarcoma metastasis.
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Affiliation(s)
- Ailiang Zhang
- Department of Orthopaedics, Changzhou No, 1 People's Hospital, Changzhou, Jiangsu 213003, PR China.
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20
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Van Camp JK, Beckers S, Zegers D, Van Hul W. Wnt Signaling and the Control of Human Stem Cell Fate. Stem Cell Rev Rep 2013; 10:207-29. [DOI: 10.1007/s12015-013-9486-8] [Citation(s) in RCA: 121] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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21
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Sherwood V, Chaurasiya SK, Ekström EJ, Guilmain W, Liu Q, Koeck T, Brown K, Hansson K, Agnarsdóttir M, Bergqvist M, Jirström K, Ponten F, James P, Andersson T. WNT5A-mediated β-catenin-independent signalling is a novel regulator of cancer cell metabolism. Carcinogenesis 2013; 35:784-94. [PMID: 24293407 PMCID: PMC3977146 DOI: 10.1093/carcin/bgt390] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
WNT5A has been identified as an important ligand in the malignant progression of a number of tumours. Although WNT5A signalling is often altered in cancer, the ligand’s role as either a tumour suppressor or oncogene varies between tumour types and is a contemporary issue for investigators of β-catenin-independent WNT signalling in oncology. Here, we report that one of the initial effects of active WNT5A signalling in malignant melanoma cells is an alteration in cellular energy metabolism and specifically an increase in aerobic glycolysis. This was found to be at least in part due to an increase in active Akt signalling and lactate dehydrogenase (LDH) activity. The clinical relevance of these findings was strengthened by a strong correlation (P < 0.001) between the expression of WNT5A and LDH isoform V in a cohort of melanocytic neoplasms. We also found effects of WNT5A on energy metabolism in breast cancer cells, but rather than promoting aerobic glycolysis as it does in melanoma, WNT5A signalling increased oxidative phosphorylation rates in breast cancer cells. These findings support a new role for WNT5A in the metabolic reprogramming of cancer cells that is a context- dependent event.
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Affiliation(s)
- Victoria Sherwood
- Cell and Experimental Pathology, Department of Laboratory Medicine, Lund University, Clinical Research Centre, Skåne University Hospital, SE-20502 Malmö, Sweden
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22
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Bartis D, Csongei V, Weich A, Kiss E, Barko S, Kovacs T, Avdicevic M, D’Souza VK, Rapp J, Kvell K, Jakab L, Nyitrai M, Molnar TF, Thickett DR, Laszlo T, Pongracz JE. Down-regulation of canonical and up-regulation of non-canonical Wnt signalling in the carcinogenic process of squamous cell lung carcinoma. PLoS One 2013; 8:e57393. [PMID: 23505429 PMCID: PMC3591434 DOI: 10.1371/journal.pone.0057393] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 01/23/2013] [Indexed: 12/16/2022] Open
Abstract
The majority of lung cancers (LC) belong to the non-small cell lung carcinoma (NSCLC) type. The two main NSCLC sub-types, namely adenocarcinoma (AC) and squamous cell carcinoma (SCC), respond differently to therapy. Whereas the link between cigarette smoke and lung cancer risk is well established, the relevance of non-canonical Wnt pathway up-regulation detected in SCC remains poorly understood. The present study was undertaken to investigate further the molecular events in canonical and non-canonical Wnt signalling during SCC development. A total of 20 SCC and AC samples with matched non-cancerous controls were obtained after surgery. TaqMan array analysis confirmed up-regulation of non-canonical Wnt5a and Wnt11 and identified down-regulation of canonical Wnt signalling in SCC samples. The molecular changes were tested in primary small airway epithelial cells (SAEC) and various lung cancer cell lines (e.g. A549, H157, etc). Our studies identified Wnt11 and Wnt5a as regulators of cadherin expression and potentiated relocation of β-catenin to the nucleus as an important step in decreased cellular adhesion. The presented data identifies additional details in the regulation of SCC that can aid identification of therapeutic drug targets in the future.
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Affiliation(s)
- Domokos Bartis
- Department of Medical Biotechnology, Institute of Immunology and Biotechnology, Medical School, University of Pecs, Pecs, Hungary
- Department of Medicine, Medical School, University of Birmingham, Birmingham, United Kingdom
| | - Veronika Csongei
- Department of Medical Biotechnology, Institute of Immunology and Biotechnology, Medical School, University of Pecs, Pecs, Hungary
- Szentagothai Research Center, University of Pecs, Pecs, Hungary
| | - Alexander Weich
- Department of Medical Biotechnology, Institute of Immunology and Biotechnology, Medical School, University of Pecs, Pecs, Hungary
| | - Edit Kiss
- Department of Medical Biotechnology, Institute of Immunology and Biotechnology, Medical School, University of Pecs, Pecs, Hungary
- Szentagothai Research Center, University of Pecs, Pecs, Hungary
| | - Szilvia Barko
- Department of Biophysics, Medical School, University of Pecs, Pecs, Hungary
| | - Tamas Kovacs
- Department of Medical Biotechnology, Institute of Immunology and Biotechnology, Medical School, University of Pecs, Pecs, Hungary
- Szentagothai Research Center, University of Pecs, Pecs, Hungary
| | - Monika Avdicevic
- Department of Medical Biotechnology, Institute of Immunology and Biotechnology, Medical School, University of Pecs, Pecs, Hungary
| | - Vijay K. D’Souza
- Department of Medicine, Medical School, University of Birmingham, Birmingham, United Kingdom
| | - Judit Rapp
- Department of Medical Biotechnology, Institute of Immunology and Biotechnology, Medical School, University of Pecs, Pecs, Hungary
- Szentagothai Research Center, University of Pecs, Pecs, Hungary
| | - Krisztian Kvell
- Department of Medical Biotechnology, Institute of Immunology and Biotechnology, Medical School, University of Pecs, Pecs, Hungary
- Szentagothai Research Center, University of Pecs, Pecs, Hungary
| | - Laszlo Jakab
- Department of Surgery, Medical School, University of Pecs, Pecs, Hungary
| | - Miklos Nyitrai
- Department of Medicine, Medical School, University of Birmingham, Birmingham, United Kingdom
- Szentagothai Research Center, University of Pecs, Pecs, Hungary
| | - Tamas F. Molnar
- Department of Surgery, Medical School, University of Pecs, Pecs, Hungary
| | - David R. Thickett
- Department of Medicine, Medical School, University of Birmingham, Birmingham, United Kingdom
| | - Terezia Laszlo
- Department of Pathology, Medical School, University of Pecs, Pecs, Hungary
| | - Judit E. Pongracz
- Department of Medical Biotechnology, Institute of Immunology and Biotechnology, Medical School, University of Pecs, Pecs, Hungary
- Szentagothai Research Center, University of Pecs, Pecs, Hungary
- * E-mail:
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23
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Kumawat K, Menzen MH, Bos IST, Baarsma HA, Borger P, Roth M, Tamm M, Halayko AJ, Simoons M, Prins A, Postma DS, Schmidt M, Gosens R. Noncanonical WNT-5A signaling regulates TGF-β-induced extracellular matrix production by airway smooth muscle cells. FASEB J 2012; 27:1631-43. [PMID: 23254341 DOI: 10.1096/fj.12-217539] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Transforming growth factor β (TGF-β), a key mediator of fibrotic responses, is increased in asthma and drives airway remodeling by inducing expression of extracellular matrix (ECM) proteins. We investigated the molecular mechanisms underlying TGF-β-induced ECM expression by airway smooth muscle cells and demonstrate a novel link between TGF-β and Wingless/integrase 1 (WNT) signaling in ECM deposition. Airway smooth muscle expresses abundant WNT ligands, with the noncanonical WNT-5A being the most profoundly expressed. Interestingly, WNT-5A shows ∼2-fold higher abundance in airway smooth muscle cells isolated from individuals with asthma than individuals without asthma. WNT-5A is markedly induced in response to TGF-β (4-16-fold; EC₅₀ 0.3 ng/ml) and is required for collagen and fibronectin expression by airway smooth muscle. WNT-5A engages noncanonical WNT signaling pathways, as inhibition of Ca(2+) and c-Jun N-terminal kinase (JNK) signaling attenuated this TGF-β response, whereas the canonical WNT antagonist Dickkopf 1 (DKK-1) did not. Accordingly, WNT-5A induced JNK phosphorylation and nuclear translocation of nuclear factor of activated T cells c1 (NFATc1). Furthermore, silencing of the WNT-5A receptors Frizzled 8 (FZD8) and RYK attenuated TGF-β-induced ECM expression. Collectively, these findings demonstrate that noncanonical WNT-5A signaling is activated by and necessary for TGF-β-induced ECM production by airway smooth muscle cells, which could have significance in asthma pathogenesis.
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Affiliation(s)
- Kuldeep Kumawat
- Department of Molecular Pharmacology, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands.
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PI3K/Akt-dependent phosphorylation of GSK3β and activation of RhoA regulate Wnt5a-induced gastric cancer cell migration. Cell Signal 2012; 25:447-56. [PMID: 23123500 DOI: 10.1016/j.cellsig.2012.10.012] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 10/26/2012] [Indexed: 01/11/2023]
Abstract
Wnt5a, a non-transforming Wnt family member, plays complicated roles in oncogenesis and cancer metastasis. However, Wnt5a signaling in gastric cancer progression remains poorly defined. In this study, we found that Wnt5a dose-dependently stimulated the migration of human gastric cancer cells (SGC-7901), with the maximal effect at 100 ng/mL, via enhancing phosphorylation of PI3K/Akt and GSK3β and activating RhoA. Pharmaceutical inhibition of PI3K with LY294002 or Akt siRNA significantly decreased Wnt5a-induced GSK3β phosphorylation and consequently cell migration. Additionally, GSK3β siRNA remarkably inhibited Wnt5a-induced RhoA activation, stress fiber formation and cell migration. Analogously, pre-treatment with LiCl, which induced phosphorylation of GSK3β at Ser9, increased Wnt5a-induced cell migration. Finally, ectopic expression of dominant negative RhoA (N19) suppressed Wnt5a-induced cell migration. Taken together, we demonstrated for the first time that Wnt5a promoted gastric cancer cell migration via the PI3K/Akt/GSK3β/RhoA signaling pathway. These findings could provide a rationale for designing new therapy targeting gastric cancer metastasis.
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25
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Grondona JM, Hoyo-Becerra C, Visser R, Fernández-Llebrez P, López-Ávalos MD. The subcommissural organ and the development of the posterior commissure. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2012; 296:63-137. [PMID: 22559938 DOI: 10.1016/b978-0-12-394307-1.00002-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Growing axons navigate through the developing brain by means of axon guidance molecules. Intermediate targets producing such signal molecules are used as guideposts to find distal targets. Glial, and sometimes neuronal, midline structures represent intermediate targets when axons cross the midline to reach the contralateral hemisphere. The subcommissural organ (SCO), a specialized neuroepithelium located at the dorsal midline underneath the posterior commissure, releases SCO-spondin, a large glycoprotein belonging to the thrombospondin superfamily that shares molecular domains with axonal pathfinding molecules. Several evidences suggest that the SCO could be involved in the development of the PC. First, both structures display a close spatiotemporal relationship. Second, certain mutants lacking an SCO present an abnormal PC. Third, some axonal guidance molecules are expressed by SCO cells. Finally, SCO cells, the Reissner's fiber (the aggregated form of SCO-spondin), or synthetic peptides from SCO-spondin affect the neurite outgrowth or neuronal aggregation in vitro.
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Affiliation(s)
- Jesús M Grondona
- Departamento de Biología Celular, Genética y Fisiología, Facultad de Ciencias, Universidad de Málaga, Spain.
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26
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Rauner M, Stein N, Winzer M, Goettsch C, Zwerina J, Schett G, Distler JHW, Albers J, Schulze J, Schinke T, Bornhäuser M, Platzbecker U, Hofbauer LC. WNT5A is induced by inflammatory mediators in bone marrow stromal cells and regulates cytokine and chemokine production. J Bone Miner Res 2012; 27:575-85. [PMID: 22162112 DOI: 10.1002/jbmr.1488] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
WNT5A has recently been implicated in inflammatory processes, but its role as a bone marrow stromal cell (BMSC)-derived mediator of joint inflammation in arthritis is unclear. Here, we investigated whether inflammatory stimuli induce WNT5A in BMSC to control inflammatory responses. WNT5A levels were determined in human BMSC after stimulation with lipopolysaccharide (LPS) or tumor necrosis factor α (TNF-α,) and in synovial cells and tissue of patients with rheumatoid arthritis (RA) and human TNF-α transgenic (hTNFtg) mice. A microarray analysis of WNT5A-treated murine osteoblasts was performed using Affymetrix gene chips. The regulation of cytokine/chemokine expression was confirmed by qPCR, ELISA, and Luminex technology in BMSC after stimulation with WNT5A or WNT5A knockdown. Relevant signaling pathways were identified using specific inhibitors. Migration of MACS-purified T lymphocytes and monocytes was assessed using the FluoroBlok system. WNT5A expression was increased threefold in BMSC after stimulation with LPS or TNF-α. Synovial fibroblasts from patients with RA showed a twofold increase of WNT5A expression compared with control cells, and its expression was highly induced in the synovial tissue of patients with RA and hTNFtg mice. Microarray analysis of WNT5A-treated osteoblasts identified cytokines and chemokines as targets. The induction of IL-1β, IL-6, CCL2, CCL5, CXCL1, and CXCL5 by WNT5A was confirmed in BMSC and depended on the activation of the NF-κB, mitogen-activated protein (MAPK), and Akt pathways. Accordingly, knockdown of WNT5A markedly reduced the basal and LPS-induced cytokine/chemokine production. Finally, migration of monocytes and T cells toward the supernatant of WNT5A-treated BMSC was increased by 25% and 20%, respectively. This study underlines the critical role of BMSC-derived WNT5A in the regulation of inflammatory processes and suggests its participation in the pathogenesis of RA.
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Affiliation(s)
- Martina Rauner
- Division of Endocrinology, Diabetes, and Bone Diseases, Department of Medicine III, Technical University, Dresden, Germany.
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A switch from canonical to noncanonical Wnt signaling mediates drug resistance in colon cancer cells. PLoS One 2011; 6:e27308. [PMID: 22073312 PMCID: PMC3207861 DOI: 10.1371/journal.pone.0027308] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 10/13/2011] [Indexed: 02/07/2023] Open
Abstract
Butyrate, a fermentation product of fiber in the colon, acts as a histone deacetylase inhibitor (HDACi) and induces apoptosis in colon cancer (CC) cells in vitro. We have reported that the apoptotic effects of butyrate are dependent upon the hyperactivation of the Wnt/beta-catenin pathway. However, prolonged exposure of CC cells to increasing concentrations of butyrate results in the acquisition of resistance to the Wnt/beta-catenin- and apoptosis-inducing effects of this agent, as well as cross-resistance to structurally different HDACis. Here we report that one mechanism whereby HDACi resistance arises is through the increase of beta-catenin-independent (noncanonical) Wnt signaling. Compared to HDACi-sensitive HCT-116 CC cells, HDACi-resistant HCT-R cells exhibit higher levels of AKT/PKB cell survival signaling, which is in part induced by WNT5A and its receptor ROR2. The induction of AKT signaling by HDACis is also detected in other CC cell lines, albeit to a lesser extent than in the drug-resistant HCT-R cells. The observations suggested that the apoptotic effect of butyrate and other HDACis in CC cells can be augmented by inhibitors of pAKT. In agreement with the hypothesis, the combination of MK2206, a pAKT inhibitor, and a HDACi (butyrate or LBH589) induced higher apoptosis in CC cells compared to each agent alone. The exposure to both agents also re-sensitized the HCT-R cells to apoptosis. Finally, the concept of simultaneously inducing canonical Wnt activity and suppressing AKT signaling was translated into a combination of diet-derived agents. Diet-derived pAKT inhibitors (caffeic acid phethyl ester, sulforaphane, dilallyl trisulfide) suppressed the butyrate-induced levels of pAKT, and increased the apoptotic effects of butyrate in both drug-sensitive and drug-resistant CC cells. Our findings can be translated into (a) CC therapy employing combinations of synthetic HDACis and inhibitors of pAKT, as well as (b) CC prevention based upon diets that result in sufficient amounts of butyrate and pAKT inhibitors.
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Myers JP, Santiago-Medina M, Gomez TM. Regulation of axonal outgrowth and pathfinding by integrin-ECM interactions. Dev Neurobiol 2011; 71:901-23. [PMID: 21714101 PMCID: PMC3192254 DOI: 10.1002/dneu.20931] [Citation(s) in RCA: 157] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Developing neurons use a combination of guidance cues to assemble a functional neural network. A variety of proteins immobilized within the extracellular matrix (ECM) provide specific binding sites for integrin receptors on neurons. Integrin receptors on growth cones associate with a number of cytosolic adaptor and signaling proteins that regulate cytoskeletal dynamics and cell adhesion. Recent evidence suggests that soluble growth factors and classic axon guidance cues may direct axon pathfinding by controlling integrin-based adhesion. Moreover, because classic axon guidance cues themselves are immobilized within the ECM and integrins modulate cellular responses to many axon guidance cues, interactions between activated receptors modulate cell signals and adhesion. Ultimately, growth cones control axon outgrowth and pathfinding behaviors by integrating distinct biochemical signals to promote the proper assembly of the nervous system. In this review, we discuss our current understanding how ECM proteins and their associated integrin receptors control neural network formation.
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Affiliation(s)
- Jonathan P Myers
- Department of Neuroscience, Neuroscience Training Program, University of Wisconsin, Madison, Wisconsin 53706, USA
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Liu HX, Grosse AS, Iwatsuki K, Mishina Y, Gumucio DL, Mistretta CM. Separate and distinctive roles for Wnt5a in tongue, lingual tissue and taste papilla development. Dev Biol 2011; 361:39-56. [PMID: 22024319 DOI: 10.1016/j.ydbio.2011.10.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 10/02/2011] [Accepted: 10/03/2011] [Indexed: 01/07/2023]
Abstract
Although canonical Wnt signaling is known to regulate taste papilla induction and numbers, roles for noncanonical Wnt pathways in tongue and taste papilla development have not been explored. With mutant mice and whole tongue organ cultures we demonstrate that Wnt5a protein and message are within anterior tongue mesenchyme across embryo stages from the initiation of tongue formation, through papilla placode appearance and taste papilla development. The Wnt5a mutant tongue is severely shortened, with an ankyloglossia, and lingual mesenchyme is disorganized. However, fungiform papilla morphology, number and innervation are preserved, as is expression of the papilla marker, Shh. These data demonstrate that the genetic regulation for tongue size and shape can be separated from that directing lingual papilla development. Preserved number of papillae in a shortened tongue results in an increased density of fungiform papillae in the mutant tongues. In tongue organ cultures, exogenous Wnt5a profoundly suppresses papilla formation and simultaneously decreases canonical Wnt signaling as measured by the TOPGAL reporter. These findings suggest that Wnt5a antagonizes canonical Wnt signaling to dictate papilla number and spacing. In all, distinctive roles for Wnt5a in tongue size, fungiform papilla patterning and development are shown and a necessary balance between non-canonical and canonical Wnt paths in regulating tongue growth and fungiform papillae is proposed in a model, through the Ror2 receptor.
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Affiliation(s)
- Hong-Xiang Liu
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48109-1078, USA
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Kim SY, Kim S, Yun-Choi HS, Jho EH. Wnt5a potentiates U46619-induced platelet aggregation via the PI3K/Akt pathway. Mol Cells 2011; 32:333-6. [PMID: 21870110 PMCID: PMC3887641 DOI: 10.1007/s10059-011-0134-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Accepted: 07/12/2011] [Indexed: 12/31/2022] Open
Abstract
Platelet aggregation plays crucial roles in the formation of hemostatic plugs and thrombosis. Although it was recently shown that canonical Wnt signaling negatively regulates platelet aggregation, the role of non-canonical Wnt signaling remains unknown. Here, we observed that Wnt5a, one of the non-canonical Wnts, positively regulated platelet aggregation. Platelet aggregation was potentiated by the addition of Wnt5a to collagen-or U46619-induced rat platelet rich plasma (PRP). Treatment with Wnt5a to U46619-stimulated PRP resulted in an increase in the level of phosphorylated Akt, whereas phosphorylation of PKCδ and JNK1 was unaffected. In addition, inhibition of PI3K blocked the potentiating effect of Wnt5a. Taken together, these results suggest that Wnt5a potentiates U46619-induced platelet aggregation via the PI3K/Akt pathway.
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Affiliation(s)
- Sun Young Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 151-742, Korea
- These authors contributed equally to this work
| | - Sewoon Kim
- Department of Life Science, University of Seoul, Seoul 130-743, Korea
- These authors contributed equally to this work
| | - Hye Sook Yun-Choi
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Eek-hoon Jho
- Department of Life Science, University of Seoul, Seoul 130-743, Korea
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31
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Yeh JR, Zhang X, Nagano MC. Wnt5a is a cell-extrinsic factor that supports self-renewal of mouse spermatogonial stem cells. J Cell Sci 2011; 124:2357-66. [PMID: 21693582 DOI: 10.1242/jcs.080903] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The maintenance of spermatogonial stem cells (SSCs) provides the foundation for life-long spermatogenesis. Although glial-cell-line-derived neurotrophic factor and fibroblast growth factor 2 are crucial for self-renewal of SSCs, recent studies have suggested that other growth factors have important roles in controlling SSC fate. Because β-catenin-dependent Wnt signaling promotes self-renewal of various stem cell types, we hypothesized that this pathway contributes to SSC maintenance. Using transgenic reporter mice for β-catenin-dependent signaling, we found that this signaling was not active in SSCs in vitro and in most spermatogonia in vivo. Nonetheless, a pan-Wnt antagonist significantly reduced SSC activity in vitro, suggesting that some Wnt molecules exist in our serum-free culture system and contribute to SSC maintenance. Here, we report that Wnt5a promotes SSC activity. We found that Wnt5a-expressing fibroblasts supported SSC activity better than those not expressing Wnt5a in culture, and that recombinant Wnt5a stimulated SSC maintenance. Furthermore, Wnt5a promoted SSC survival in the absence of feeder cells, and this effect was abolished by inhibiting the Jun N-terminal kinase cascade. In addition, Wnt5a blocked β-catenin-dependent signaling. We detected the expression of Wnt5a and potential Wnt5a receptors in Sertoli cells and stem/progenitor spermatogonia, respectively. These results indicate that Wnt5a is a cell-extrinsic factor that supports SSC self-renewal through β-catenin-independent mechanisms.
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Affiliation(s)
- Jonathan R Yeh
- Department of Obstetrics and Gynecology and Division of Experimental Medicine, McGill University, Montreal, QC H3A 1A1, Canada
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32
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Albers J, Schulze J, Beil FT, Gebauer M, Baranowsky A, Keller J, Marshall RP, Wintges K, Friedrich FW, Priemel M, Schilling AF, Rueger JM, Cornils K, Fehse B, Streichert T, Sauter G, Jakob F, Insogna KL, Pober B, Knobeloch KP, Francke U, Amling M, Schinke T. Control of bone formation by the serpentine receptor Frizzled-9. ACTA ACUST UNITED AC 2011; 192:1057-72. [PMID: 21402791 PMCID: PMC3063134 DOI: 10.1083/jcb.201008012] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Although Wnt signaling in osteoblasts is of critical importance for the regulation of bone remodeling, it is not yet known which specific Wnt receptors of the Frizzled family are functionally relevant in this process. In this paper, we show that Fzd9 is induced upon osteoblast differentiation and that Fzd9(-/-) mice display low bone mass caused by impaired bone formation. Our analysis of Fzd9(-/-) primary osteoblasts demonstrated defects in matrix mineralization in spite of normal expression of established differentiation markers. In contrast, we observed a reduced expression of chemokines and interferon-regulated genes in Fzd9(-/-) osteoblasts. We also identified the ubiquitin-like modifier Isg15 as one potential downstream mediator of Fzd9 in these cells. Importantly, our molecular analysis further revealed that canonical Wnt signaling is not impaired in the absence of Fzd9, thus explaining the absence of a bone resorption phenotype. Collectively, our results reveal a previously unknown function of Fzd9 in osteoblasts, a finding that may have therapeutic implications for bone loss disorders.
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Affiliation(s)
- Joachim Albers
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
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Yamada M, Udagawa J, Matsumoto A, Hashimoto R, Hatta T, Nishita M, Minami Y, Otani H. Ror2 is required for midgut elongation during mouse development. Dev Dyn 2010; 239:941-53. [PMID: 20063415 DOI: 10.1002/dvdy.22212] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The receptor tyrosine kinase Ror2 acts as a receptor for Wnt5a to mediate noncanonical Wnt signaling, and it plays essential roles in morphogenesis. Ror2-/- embryos exhibit phenotypes similar to, albeit generally milder than, those of Wnt5a-/- embryos. During mouse embryogenesis, Ror2 is expressed in various organs and regions, although little is known about its expression pattern and roles in the developing gut, while Wnt5a is expressed in the developing gut, where its absence causes abnormal phenotypes. Here, we demonstrated that Ror2 was strongly and differentially expressed in the rostral and middle midgut endoderm from embryonic day (E) 10.5 through embryonic day (E) 12.5. At E11.5, Ror2-/- embryos exhibited a shorter middle midgut with a larger diameter and more accumulation of epithelial cells in the middle midgut than control embryos, while the total cell numbers remained unaltered. These findings suggest that Ror2 plays important roles in midgut elongation by means of an epithelial convergent extension mechanism.
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Affiliation(s)
- Makiko Yamada
- Department of Developmental Biology, Faculty of Medicine, Shimane University, Izumo, Japan.
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Liebl FLW, McKeown C, Yao Y, Hing HK. Mutations in Wnt2 alter presynaptic motor neuron morphology and presynaptic protein localization at the Drosophila neuromuscular junction. PLoS One 2010; 5:e12778. [PMID: 20856675 PMCID: PMC2939895 DOI: 10.1371/journal.pone.0012778] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2009] [Accepted: 08/24/2010] [Indexed: 01/02/2023] Open
Abstract
Wnt proteins are secreted proteins involved in a number of developmental processes including neural development and synaptogenesis. We sought to determine the role of the Drosophila Wnt7b ortholog, Wnt2, using the neuromuscular junction (NMJ). Mutations in wnt2 produce an increase in the number of presynaptic branches and a reduction in immunolabeling of the active zone proteins, Bruchpilot and synaptobrevin, at the NMJ. There was no change, however, in immunolabeling for the presynaptic proteins cysteine-string protein (CSP) and synaptotagmin, nor the postsynaptic proteins GluRIIA and DLG at the NMJ. Consistent with the presynaptic defects, wnt2 mutants exhibit approximately a 50% reduction in evoked excitatory junctional currents. Rescue, RNAi, and tissue-specific qRT-PCR experiments indicate that Wnt2 is expressed by the postsynaptic cell where it may serve as a retrograde signal that regulates presynaptic morphology and the localization of presynaptic proteins.
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Affiliation(s)
- Faith L W Liebl
- Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville, Illinois, United States of America.
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Kovacs JJ, Hara MR, Davenport CL, Kim J, Lefkowitz RJ. Arrestin development: emerging roles for beta-arrestins in developmental signaling pathways. Dev Cell 2009; 17:443-58. [PMID: 19853559 DOI: 10.1016/j.devcel.2009.09.011] [Citation(s) in RCA: 169] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Arrestins were identified as mediators of G protein-coupled receptor (GPCR) desensitization and endocytosis. However, it is now clear that they scaffold many intracellular signaling networks to modulate the strength and duration of signaling by diverse types of receptors--including those relevant to the Hedgehog, Wnt, Notch, and TGFbeta pathways--and downstream kinases such as the MAPK and Akt/PI3K cascades. The involvement of arrestins in many discrete developmental signaling events suggests an indispensable role for these multifaceted molecular scaffolds.
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Affiliation(s)
- Jeffrey J Kovacs
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA
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Romanowska M, Evans A, Kellock D, Bray SE, McLean K, Donandt S, Foerster J. Wnt5a exhibits layer-specific expression in adult skin, is upregulated in psoriasis, and synergizes with type 1 interferon. PLoS One 2009; 4:e5354. [PMID: 19399181 PMCID: PMC2670517 DOI: 10.1371/journal.pone.0005354] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Accepted: 03/17/2009] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Wnt5a is a member of the wingless-type patterning regulators important in pre-natal development. The expression and distribution of Wnt5a and its receptors frizzled (fzd) 3 and fzd 5 in adult human skin have not been comprehensively studied to date. METHODOLOGY/PRINCIPAL FINDINGS We here show that Wnt5a, fzd3, fzd5, as well as fzd6 are restricted to specific layers in normal epidermis, analogous to their zonal distribution in hair follicles, suggesting a role in adult skin differentiation. In line, Wnt5a and fzd5 are both overexpressed and re-distributed in the epidermis of psoriasis which involves disturbed keratinocyte differentiation. Functionally, Wnt5a lowers the concentration of IFN required to induce target genes, and increases the magnitude of IFN target gene induction, suggesting a molecular mechanism underlying IFN hypersensitivity in psoriasis. Finally, we identify nedd8 and the amyloid precursor APP, previously shown to be upregulated in psoriasis, as targets of synergistic IFNalpha/Wnt5a induction. CONCLUSIONS/SIGNIFICANCE The present data (i) suggest that Wnt5a regulates epidermal differentiation even in adult skin and (ii) identify synergistic induction of type 1 IFN target genes as a novel mode of Wnt5a action. Targeting Wnt5a in the skin may reduce IFN hypersensitivity and be of therapeutical value.
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Affiliation(s)
- Malgorzata Romanowska
- Division of Experimental Medicine, University of Dundee, Dundee, Scotland, United Kingdom
| | - Alan Evans
- Division of Experimental Medicine, University of Dundee, Dundee, Scotland, United Kingdom
| | - David Kellock
- Tayside Tissue Bank, University of Dundee, Dundee, Scotland, United Kingdom
| | - Susan E. Bray
- Tayside Tissue Bank, University of Dundee, Dundee, Scotland, United Kingdom
| | - Kathleen McLean
- Tayside Tissue Bank, University of Dundee, Dundee, Scotland, United Kingdom
| | - Susanne Donandt
- Department of Dermatology, University of Dundee, Dundee, Scotland, United Kingdom
| | - John Foerster
- Division of Experimental Medicine, University of Dundee, Dundee, Scotland, United Kingdom
- Charité Medical University, Berlin, Germany
- * E-mail:
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Davis EK, Zou Y, Ghosh A. Wnts acting through canonical and noncanonical signaling pathways exert opposite effects on hippocampal synapse formation. Neural Dev 2008; 3:32. [PMID: 18986540 PMCID: PMC2596118 DOI: 10.1186/1749-8104-3-32] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2008] [Accepted: 11/05/2008] [Indexed: 11/21/2022] Open
Abstract
Background Wnt proteins comprise a large class of signaling molecules that regulate a variety of developmental processes, including synapse formation. Previous studies have shown Wnts to be involved in both the induction and prevention of synapses in a number of different organisms. However, it is not clear whether the influence of Wnts on synapses is a result of Wnts' behavior in different organisms or differences in the activity of different Wnt ligands. Results We used in situ hybridization to show that several Wnt ligands (Wnt3, Wnt5a, Wnt7a, and Wnt7b) and their receptors, Frizzled, are expressed in the developing hippocampus during the period of synapse formation in rodents. We used recombinant Wnt protein or Wnt conditioned media to explore the effects of Wnts on synapses in hippocampal cultures. We found that Wnt7a and Wnt7b activate canonical signaling, whereas Wnt5a activates a noncanonical pathway. The activation of the canonical pathway, either through pathway manipulations or through Wnt stimulation, increases presynaptic inputs. In contrast, exposure to Wnt5a, which activates a noncanonical signaling pathway, decreases the number of presynaptic terminals. Conclusion Our observations suggest that the pro- and antisynaptogenic effects of Wnt proteins are associated with the activation of the canonical and noncanonical Wnt signaling pathways.
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Affiliation(s)
- Elizabeth K Davis
- Division of Biological Sciences, Neurobiology Section, UCSD, La Jolla, CA 92093-0366, USA.
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Torii K, Nishizawa K, Kawasaki A, Yamashita Y, Katada M, Ito M, Nishimoto I, Terashita K, Aiso S, Matsuoka M. Anti-apoptotic action of Wnt5a in dermal fibroblasts is mediated by the PKA signaling pathways. Cell Signal 2008; 20:1256-66. [DOI: 10.1016/j.cellsig.2008.02.013] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2007] [Revised: 02/18/2008] [Accepted: 02/18/2008] [Indexed: 01/22/2023]
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Abstract
Dysregulation of growth factors and their receptors is central to human hepatocellular carcinoma (HCC). We previously demonstrated that the Frizzled-7 membrane receptor mediating the Wnt signalling can activate the beta-catenin pathway and promotes malignancy in human hepatitis B virus-related HCCs. Expression patterns of all the 10 Frizzled receptors, and their extracellular soluble autoparacrine regulators (19 Wnt activators and 4 sFRP inhibitors) were assessed by real-time RT-PCR in 62 human HCC of different etiologies and their matched peritumorous areas. Immunostaining was performed to localise Frizzled on cell types in liver tissues. Regulation of three known Frizzled-dependent pathways (beta-catenin, protein kinase C, and C-Jun NH(2)-terminal kinase) was measured in tissues by western blot. We found that eight Frizzled-potentially activating events were pleiotropically dysregulated in 95% HCC and 68% peritumours as compared to normal livers (upregulations of Frizzled-3/6/7 and Wnt3/4/5a, or downregulation of sFRP1/5), accumulating gradually with severity of fibrosis in peritumours and loss of differentiation status in tumours. The hepatocytes supported the Wnt/Frizzled signalling since specifically overexpressing Frizzled receptors in liver tissues. Dysregulation of the eight Frizzled-potentially activating events was associated with differential activation of the three known Frizzled-dependent pathways. This study provides an extensive analysis of the Wnt/Frizzled receptor elements and reveals that the dysregulation may be one of the most common and earliest events described thus far during hepatocarcinogenesis.
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Christensen ST, Pedersen SF, Satir P, Veland IR, Schneider L. The primary cilium coordinates signaling pathways in cell cycle control and migration during development and tissue repair. Curr Top Dev Biol 2008; 85:261-301. [PMID: 19147009 DOI: 10.1016/s0070-2153(08)00810-7] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cell cycle control and migration are critical processes during development and maintenance of tissue functions. Recently, primary cilia were shown to take part in coordination of the signaling pathways that control these cellular processes in human health and disease. In this review, we present an overview of the function of primary cilia and the centrosome in the signaling pathways that regulate cell cycle control and migration with focus on ciliary signaling via platelet-derived growth factor receptor alpha (PDGFRalpha). We also consider how the primary cilium and the centrosome interact with the extracellular matrix, coordinate Wnt signaling, and modulate cytoskeletal changes that impinge on both cell cycle control and cell migration.
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Affiliation(s)
- Søren T Christensen
- Department of Biology, Section of Cell and Developmental Biology, The August Krogh Building, University of Copenhagen, Universitetsparken 13, DK-2100 Copenhagen OE, Denmark
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