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Hernandez-Perez I, Rubio J, Baumann A, Girao H, Ferrando M, Rebollo E, Aragay AM, Geli MI. Kazrin promotes dynein/dynactin-dependent traffic from early to recycling endosomes. eLife 2023; 12:e83793. [PMID: 37096882 PMCID: PMC10181827 DOI: 10.7554/elife.83793] [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: 09/29/2022] [Accepted: 04/24/2023] [Indexed: 04/26/2023] Open
Abstract
Kazrin is a protein widely expressed in vertebrates whose depletion causes a myriad of developmental defects, in part derived from altered cell adhesion and migration, as well as failure to undergo epidermal to mesenchymal transition. However, the primary molecular role of kazrin, which might contribute to all these functions, has not been elucidated yet. We previously identified one of its isoforms, kazrin C, as a protein that potently inhibits clathrin-mediated endocytosis when overexpressed. We now generated kazrin knock-out mouse embryonic fibroblasts to investigate its endocytic function. We found that kazrin depletion delays juxtanuclear enrichment of internalized material, indicating a role in endocytic traffic from early to recycling endosomes. Consistently, we found that the C-terminal domain of kazrin C, predicted to be an intrinsically disordered region, directly interacts with several early endosome (EE) components, and that kazrin depletion impairs retrograde motility of these organelles. Further, we noticed that the N-terminus of kazrin C shares homology with dynein/dynactin adaptors and that it directly interacts with the dynactin complex and the dynein light intermediate chain 1. Altogether, the data indicate that one of the primary kazrin functions is to facilitate endocytic recycling by promoting dynein/dynactin-dependent transport of EEs or EE-derived transport intermediates to the recycling endosomes.
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Affiliation(s)
- Ines Hernandez-Perez
- Institute for Molecular Biology of Barcelona (IBMB, CSIC), Baldiri Reixac 15BarcelonaSpain
| | - Javier Rubio
- Institute for Molecular Biology of Barcelona (IBMB, CSIC), Baldiri Reixac 15BarcelonaSpain
| | - Adrian Baumann
- Institute for Molecular Biology of Barcelona (IBMB, CSIC), Baldiri Reixac 15BarcelonaSpain
| | - Henrique Girao
- Institute for Molecular Biology of Barcelona (IBMB, CSIC), Baldiri Reixac 15BarcelonaSpain
| | - Miriam Ferrando
- Institute for Molecular Biology of Barcelona (IBMB, CSIC), Baldiri Reixac 15BarcelonaSpain
| | - Elena Rebollo
- Institute for Molecular Biology of Barcelona (IBMB, CSIC), Baldiri Reixac 15BarcelonaSpain
| | - Anna M Aragay
- Institute for Molecular Biology of Barcelona (IBMB, CSIC), Baldiri Reixac 15BarcelonaSpain
| | - María Isabel Geli
- Institute for Molecular Biology of Barcelona (IBMB, CSIC), Baldiri Reixac 15BarcelonaSpain
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Pagliazzo L, Caby S, Lancelot J, Salomé-Desnoulez S, Saliou JM, Heimburg T, Chassat T, Cailliau K, Sippl W, Vicogne J, Pierce RJ. Histone deacetylase 8 interacts with the GTPase SmRho1 in Schistosoma mansoni. PLoS Negl Trop Dis 2021; 15:e0009503. [PMID: 34843489 PMCID: PMC8670706 DOI: 10.1371/journal.pntd.0009503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 12/14/2021] [Accepted: 10/23/2021] [Indexed: 12/15/2022] Open
Abstract
Background Schistosoma mansoni histone deacetylase 8 (SmHDAC8) has elicited considerable interest as a target for drug discovery. Invalidation of its transcripts by RNAi leads to impaired survival of the worms in infected mice and its inhibition causes cell apoptosis and death. To determine why it is a promising therapeutic target the study of the currently unknown cellular signaling pathways involving this enzyme is essential. Protein partners of SmHDAC8 were previously identified by yeast two-hybrid (Y2H) cDNA library screening and by mass spectrometry (MS) analysis. Among these partners we characterized SmRho1, the schistosome orthologue of human RhoA GTPase, which is involved in the regulation of the cytoskeleton. In this work, we validated the interaction between SmHDAC8 and SmRho1 and explored the role of the lysine deacetylase in cytoskeletal regulation. Methodology/principal findings We characterized two isoforms of SmRho1, SmRho1.1 and SmRho1.2. Co- immunoprecipitation (Co-IP)/Mass Spectrometry (MS) analysis identified SmRho1 partner proteins and we used two heterologous expression systems (Y2H assay and Xenopus laevis oocytes) to study interactions between SmHDAC8 and SmRho1 isoforms. To confirm SmHDAC8 and SmRho1 interaction in adult worms and schistosomula, we performed Co-IP experiments and additionally demonstrated SmRho1 acetylation using a Nano LC-MS/MS approach. A major impact of SmHDAC8 in cytoskeleton organization was documented by treating adult worms and schistosomula with a selective SmHDAC8 inhibitor or using RNAi followed by confocal microscopy. Conclusions/significance Our results suggest that SmHDAC8 is involved in cytoskeleton organization via its interaction with the SmRho1.1 isoform. The SmRho1.2 isoform failed to interact with SmHDAC8, but did specifically interact with SmDia suggesting the existence of two distinct signaling pathways regulating S. mansoni cytoskeleton organization via the two SmRho1 isoforms. A specific interaction between SmHDAC8 and the C-terminal moiety of SmRho1.1 was demonstrated, and we showed that SmRho1 is acetylated on K136. SmHDAC8 inhibition or knockdown using RNAi caused extensive disruption of schistosomula actin cytoskeleton. Schistosoma mansoni is the major parasitic platyhelminth species causing intestinal schistosomiasis. Currently one drug, praziquantel, is the treatment of choice but its use in mass treatment programs means that the development of resistance is likely and renders imperative the development of new therapeutic agents. As new potential targets we have focused on lysine deacetylases, and in particular S. mansoni histone deacetylase 8 (SmHDAC8). Previous studies showed that reduction in the level of transcripts of SmHDAC8 by RNAi led to the impaired survival of the worms after the infection of mice. The analysis of the 3D structure of SmHDAC8 by X-ray crystallography showed that the catalytic domain structure diverges significantly from that of human HDAC8 and this was exploited to develop novel potential anti-schistosomal drugs. The biological roles of SmHDAC8 are unknown. For this reason, we previously characterized its protein binding partners and identified the schistosome orthologue of the human RhoA GTPase, suggesting the involvement of SmHDAC8 in the modulation of cytoskeleton organization. Here we investigated the interaction between SmHDAC8 and SmRho1 and identified two SmRho1 isoforms (SmRho1.1 and SmRho1.2). Our study showed that SmHDAC8 is involved in schistosome cytoskeleton organization.
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Affiliation(s)
- Lucile Pagliazzo
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, - Centre d’Infection et d’Immunité de Lille, Lille, France
| | - Stéphanie Caby
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, - Centre d’Infection et d’Immunité de Lille, Lille, France
| | - Julien Lancelot
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, - Centre d’Infection et d’Immunité de Lille, Lille, France
| | | | - Jean-Michel Saliou
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, Lille, France
| | - Tino Heimburg
- Institute of Pharmacy, Martin-Luther University of Halle-Wittenberg, Halle/Saale, Germany
| | - Thierry Chassat
- Institut Pasteur de Lille - PLEHTA (Plateforme d’expérimentation et de Haute Technologie Animale), Lille, France
| | - Katia Cailliau
- Univ. Lille, CNRS, UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Wolfgang Sippl
- Institute of Pharmacy, Martin-Luther University of Halle-Wittenberg, Halle/Saale, Germany
| | - Jérôme Vicogne
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, - Centre d’Infection et d’Immunité de Lille, Lille, France
- * E-mail: (JV); (RJP)
| | - Raymond J. Pierce
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, - Centre d’Infection et d’Immunité de Lille, Lille, France
- * E-mail: (JV); (RJP)
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Musfee FI, Agopian AJ, Goldmuntz E, Hakonarson H, Morrow BE, Taylor DM, Tristani-Firouzi M, Watkins WS, Yandell M, Mitchell LE. Common Variation in Cytoskeletal Genes is Associated with Conotruncal Heart Defects. Genes (Basel) 2021; 12:genes12050655. [PMID: 33925651 PMCID: PMC8146932 DOI: 10.3390/genes12050655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 04/15/2021] [Accepted: 04/23/2021] [Indexed: 11/22/2022] Open
Abstract
There is strong evidence for a genetic contribution to non-syndromic congenital heart defects (CHDs). However, exome- and genome-wide studies conducted at the variant and gene-level have identified few genome-wide significant CHD-related genes. Gene-set analyses are a useful complement to such studies and candidate gene-set analyses of rare variants have provided insight into the genetics of CHDs. However, similar analyses have not been conducted using data on common genetic variants. Consequently, we conducted common variant analyses of 15 CHD candidate gene-sets, using data from two common types of CHDs: conotruncal heart defects (1431 cases) and left ventricular outflow tract defects (509 cases). After Bonferroni correction for evaluation of multiple gene-sets, the cytoskeletal gene-set was significantly associated with conotruncal heart defects (βS = 0.09; 95% confidence interval (CI) 0.03–0.15). This association was stronger when analyses were restricted to the sub-set of cytoskeletal genes that have been observed to harbor rare damaging genotypes in at least two CHD cases (βS = 0.32, 95% CI 0.08–0.56). These findings add to the evidence linking cytoskeletal genes to CHDs and suggest that, for cytoskeletal genes, common variation may contribute to the risk of CHDs.
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Affiliation(s)
- Fadi I. Musfee
- Department of Epidemiology, Human Genetics and Environmental Sciences, UTHealth School of Public Health, Houston, TX 77030, USA; (F.I.M.); (A.J.A.)
| | - A. J. Agopian
- Department of Epidemiology, Human Genetics and Environmental Sciences, UTHealth School of Public Health, Houston, TX 77030, USA; (F.I.M.); (A.J.A.)
| | - Elizabeth Goldmuntz
- Department of Pediatrics, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA 19104, USA; (E.G.); (H.H.); (D.M.T.)
| | - Hakon Hakonarson
- Department of Pediatrics, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA 19104, USA; (E.G.); (H.H.); (D.M.T.)
- Center for Applied Genomics, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Bernice E. Morrow
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY 10461, USA;
| | - Deanne M. Taylor
- Department of Pediatrics, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA 19104, USA; (E.G.); (H.H.); (D.M.T.)
- Department of Biomedical and Health Informatics, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Martin Tristani-Firouzi
- Division of Pediatric Cardiology, University of Utah School of Medicine, Salt Lake City, UT 84113, USA;
- Nora Eccles Harrison Cardiovascular Research and Training Institute, University of Utah, Salt Lake City, UT 84112, USA
| | - W. Scott Watkins
- Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA; (W.S.W.); (M.Y.)
| | - Mark Yandell
- Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA; (W.S.W.); (M.Y.)
- Utah Center for Genetic Discovery, University of Utah, Salt Lake City, UT 84112, USA
| | - Laura E. Mitchell
- Department of Epidemiology, Human Genetics and Environmental Sciences, UTHealth School of Public Health, Houston, TX 77030, USA; (F.I.M.); (A.J.A.)
- Correspondence: ; Tel.: +1-713-500-9955
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Motahari Z, Moody SA, Maynard TM, LaMantia AS. In the line-up: deleted genes associated with DiGeorge/22q11.2 deletion syndrome: are they all suspects? J Neurodev Disord 2019; 11:7. [PMID: 31174463 PMCID: PMC6554986 DOI: 10.1186/s11689-019-9267-z] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 04/21/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND 22q11.2 deletion syndrome (22q11DS), a copy number variation (CNV) disorder, occurs in approximately 1:4000 live births due to a heterozygous microdeletion at position 11.2 (proximal) on the q arm of human chromosome 22 (hChr22) (McDonald-McGinn and Sullivan, Medicine 90:1-18, 2011). This disorder was known as DiGeorge syndrome, Velo-cardio-facial syndrome (VCFS) or conotruncal anomaly face syndrome (CTAF) based upon diagnostic cardiovascular, pharyngeal, and craniofacial anomalies (McDonald-McGinn and Sullivan, Medicine 90:1-18, 2011; Burn et al., J Med Genet 30:822-4, 1993) before this phenotypic spectrum was associated with 22q11.2 CNVs. Subsequently, 22q11.2 deletion emerged as a major genomic lesion associated with vulnerability for several clinically defined behavioral deficits common to a number of neurodevelopmental disorders (Fernandez et al., Principles of Developmental Genetics, 2015; Robin and Shprintzen, J Pediatr 147:90-6, 2005; Schneider et al., Am J Psychiatry 171:627-39, 2014). RESULTS The mechanistic relationships between heterozygously deleted 22q11.2 genes and 22q11DS phenotypes are still unknown. We assembled a comprehensive "line-up" of the 36 protein coding loci in the 1.5 Mb minimal critical deleted region on hChr22q11.2, plus 20 protein coding loci in the distal 1.5 Mb that defines the 3 Mb typical 22q11DS deletion. We categorized candidates based upon apparent primary cell biological functions. We analyzed 41 of these genes that encode known proteins to determine whether haploinsufficiency of any single 22q11.2 gene-a one gene to one phenotype correspondence due to heterozygous deletion restricted to that locus-versus complex multigenic interactions can account for single or multiple 22q11DS phenotypes. CONCLUSIONS Our 22q11.2 functional genomic assessment does not support current theories of single gene haploinsufficiency for one or all 22q11DS phenotypes. Shared molecular functions, convergence on fundamental cell biological processes, and related consequences of individual 22q11.2 genes point to a matrix of multigenic interactions due to diminished 22q11.2 gene dosage. These interactions target fundamental cellular mechanisms essential for development, maturation, or homeostasis at subsets of 22q11DS phenotypic sites.
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Affiliation(s)
- Zahra Motahari
- The Institute for Neuroscience, and Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Washington DC, 20037 USA
| | - Sally Ann Moody
- The Institute for Neuroscience, and Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Washington DC, 20037 USA
| | - Thomas Michael Maynard
- The Institute for Neuroscience, and Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Washington DC, 20037 USA
| | - Anthony-Samuel LaMantia
- The Institute for Neuroscience, and Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Washington DC, 20037 USA
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5
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Yuan L, Arikkath J. Functional roles of p120ctn family of proteins in central neurons. Semin Cell Dev Biol 2017; 69:70-82. [PMID: 28603076 DOI: 10.1016/j.semcdb.2017.05.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/16/2017] [Accepted: 05/30/2017] [Indexed: 02/06/2023]
Abstract
The cadherin-catenin complex in central neurons is associated with a variety of cytosolic partners, collectively called catenins. The p120ctn members are a family of catenins that are distinct from the more ubiquitously expressed α- and β-catenins. It is becoming increasingly clear that the functional roles of the p120ctn family of catenins in central neurons extend well beyond their functional roles in non-neuronal cells in partnering with cadherin to regulate adhesion. In this review, we will provide an overview of the p120ctn family in neurons and their varied functional roles in central neurons. Finally, we will examine the emerging roles of this family of proteins in neurodevelopmental disorders.
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Affiliation(s)
- Li Yuan
- Department of Pharmacology and Experimental Neuroscience, Munroe-Meyer Institute, University of Nebraska Medical Center, Omaha, NE 68198, United States; Developmental Neuroscience, Munroe-Meyer Institute, Durham Research Center II, Room 3031, University of Nebraska Medical Center, 985960 Nebraska Medical Center, Omaha, NE 68198-5960, United States.
| | - Jyothi Arikkath
- Developmental Neuroscience, Munroe-Meyer Institute, Durham Research Center II, Room 3031, University of Nebraska Medical Center, 985960 Nebraska Medical Center, Omaha, NE 68198-5960, United States.
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6
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Tang W, Tang J, Zhao Y, Qin Y, Jin G, Xu X, Zhu H, Shen H, Wang X, Hu Z, Xia Y. Exome-Wide Association Study Identified New Risk Loci for Hirschsprung's Disease. Mol Neurobiol 2016; 54:1777-1785. [PMID: 26887379 DOI: 10.1007/s12035-016-9752-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 01/26/2016] [Indexed: 12/15/2022]
Abstract
Hirschsprung disease (HSCR) is a rare congenital disease caused by impaired proliferation and migration of neural crest cells. In this study, we aimed to investigate the genetic loci involved in the pathogenesis of HSCR. The exome-wide scan was performed to screen the genetic variants with minor allele frequency (MAF) < 0.05 in exonic regions. Candidate mutation type and the wild type were overexpressed to investigate the affection on cell proliferation and migration. We found that ten variants were associated with HSCR at P < 10-4 in the single-variant analysis while ten genes were also associated with HSCR at P < 10-4 in the optimized sequence kernel association test (SKAT-O) test analysis. Among these SNPs, the missense variants catechol-O-methyltransferase (COMT) (rs6267) and armadillo repeat gene deleted in velocardiofacial syndrome (ARVCF) (rs80068543) indicated an ectopic expression in colon tissues of HSCR patients. The Ala72Ser variant in COMT induced proliferation suppression through NOTCH signal pathway, while the ARVCF affected cell migration via the downregulating of RHOA and ROC. In conclusion, this exome array study identified the COMT and ARVCF missense coding variants as candidate loci for HSCR. The finding implies the abnormal variant of COMT and ARVCF may account for the pathogenesis of HSCR.
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Affiliation(s)
- Weibing Tang
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Department of Pediatric Surgery, Nanjing Children's Hospital Affiliated Nanjing Medical University, Nanjing, 210008, China
| | - Junwei Tang
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Department of Pediatric Surgery, Nanjing Children's Hospital Affiliated Nanjing Medical University, Nanjing, 210008, China
| | - Yang Zhao
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Yufeng Qin
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology, Ministry of Education, Nanjing Medical University, Nanjing, China
| | - Guangfu Jin
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Xiaoqun Xu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Department of Pediatric Surgery, Nanjing Children's Hospital Affiliated Nanjing Medical University, Nanjing, 210008, China
| | - Hairong Zhu
- Department of Pediatric Surgery, Nanjing Children's Hospital Affiliated Nanjing Medical University, Nanjing, 210008, China
| | - Hongbing Shen
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Xinru Wang
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology, Ministry of Education, Nanjing Medical University, Nanjing, China
| | - Zhibing Hu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, China.
| | - Yankai Xia
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
- Key Laboratory of Modern Toxicology, Ministry of Education, Nanjing Medical University, Nanjing, China.
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Fischer-Kešo R, Breuninger S, Hofmann S, Henn M, Röhrig T, Ströbel P, Stoecklin G, Hofmann I. Plakophilins 1 and 3 bind to FXR1 and thereby influence the mRNA stability of desmosomal proteins. Mol Cell Biol 2014; 34:4244-56. [PMID: 25225333 PMCID: PMC4248750 DOI: 10.1128/mcb.00766-14] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 06/28/2014] [Accepted: 09/11/2014] [Indexed: 12/21/2022] Open
Abstract
Plakophilins 1 and 3 (PKP1/3) are members of the arm repeat family of catenin proteins and serve as structural components of desmosomes, which are important for cell-cell-adhesion. In addition, PKP1/3 occur as soluble proteins outside desmosomes, yet their role in the cytoplasm is not known. We found that cytoplasmic PKP1/3 coprecipitated with the RNA-binding proteins FXR1, G3BP, PABPC1, and UPF1, and these PKP1/3 complexes also comprised desmoplakin and PKP2 mRNAs. Moreover, we showed that the interaction of PKP1/3 with G3BP, PABPC1, and UPF1 but not with FXR1 was RNase sensitive. To address the cytoplasmic function of PKP1/3, we performed gain-and-loss-of-function studies. Both PKP1 and PKP3 knockdown cell lines showed reduced protein and mRNA levels for desmoplakin and PKP2. Whereas global rates of translation were unaffected, desmoplakin and PKP2 mRNA were destabilized. Furthermore, binding of PKP1/3 to FXR1 was RNA independent, and both PKP3 and FXR1 stabilized PKP2 mRNA. Our results demonstrate that cytoplasmic PKP1/3 are components of mRNA ribonucleoprotein particles and act as posttranscriptional regulators of gene expression.
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Affiliation(s)
- Regina Fischer-Kešo
- Division of Vascular Oncology and Metastasis, German Cancer Research Center, DKFZ-ZMBH Alliance, Heidelberg, Germany Department of Vascular Biology and Tumor Angiogenesis, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Sonja Breuninger
- Division of Vascular Oncology and Metastasis, German Cancer Research Center, DKFZ-ZMBH Alliance, Heidelberg, Germany Department of Vascular Biology and Tumor Angiogenesis, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Sarah Hofmann
- Helmholtz Junior Research Group, Posttranscriptional Control of Gene Expression, German Cancer Research Center, DKFZ-ZMBH Alliance, Heidelberg, Germany Center for Molecular Biology at the Heidelberg University, Heidelberg, Germany
| | - Manuela Henn
- Department of Vascular Biology and Tumor Angiogenesis, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Theresa Röhrig
- Division of Vascular Oncology and Metastasis, German Cancer Research Center, DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Philipp Ströbel
- Institute of Pathology, University Medical Center Göttingen, University Göttingen, Göttingen, Germany
| | - Georg Stoecklin
- Helmholtz Junior Research Group, Posttranscriptional Control of Gene Expression, German Cancer Research Center, DKFZ-ZMBH Alliance, Heidelberg, Germany Center for Molecular Biology at the Heidelberg University, Heidelberg, Germany
| | - Ilse Hofmann
- Division of Vascular Oncology and Metastasis, German Cancer Research Center, DKFZ-ZMBH Alliance, Heidelberg, Germany Department of Vascular Biology and Tumor Angiogenesis, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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8
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Sakamoto S, Narumiya S, Ishizaki T. A new role of multi scaffold protein Liprin-α: Liprin-α suppresses Rho-mDia mediated stress fiber formation. BIOARCHITECTURE 2014; 2:43-49. [PMID: 22754629 PMCID: PMC3383721 DOI: 10.4161/bioa.20442] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Regulation of the actin cytoskeleton is crucial for cell morphology and migration. One of the key molecules that regulates actin remodeling is the small GTPase Rho. Rho shuttles between the inactive GDP-bound form and the active GTP-bound form, and works as a molecular switch in actin remodeling in response to both extra- and intra-cellular stimuli. Mammalian homolog of Diaphanous (mDia) is one of the Rho effectors and produces unbranched actin filaments. While Rho GTPases activate mDia, the mechanisms of how the activity of mDia is downregulated in cells remains largely unknown. In our recent paper, we identified Liprin-α as an mDia interacting protein and found that Liprin-α negatively regulates the activity of mDia in the cell by displacing it from the plasma membrane through binding to the DID-DD region of mDia. Here, we review these findings and discuss how Liprin-α regulates the Rho-mDia pathway and how the mDia-Liprin-α complex functions in vivo.
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Affiliation(s)
- Satoko Sakamoto
- Department of Pharmacology; Kyoto University Graduate School of Medicine; Kyoto, Japan
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9
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Lee M, Ji H, Furuta Y, Park JI, McCrea PD. p120-catenin regulates REST and CoREST, and modulates mouse embryonic stem cell differentiation. J Cell Sci 2014; 127:4037-51. [PMID: 25074806 DOI: 10.1242/jcs.151944] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Although the canonical Wnt pathway and β-catenin have been extensively studied, less is known about the role of p120-catenin (also known as δ1-catenin) in the nuclear compartment. Here, we report that p120-catenin binds and negatively regulates REST and CoREST (also known as Rcor1), a repressive transcriptional complex that has diverse developmental and pathological roles. Using mouse embryonic stem cells (mESCs), mammalian cell lines, Xenopus embryos and in vitro systems, we find that p120-catenin directly binds the REST-CoREST complex, displacing it from established gene targets to permit their transcriptional activation. Importantly, p120-catenin levels further modulate the mRNA and protein levels of Oct4 (also known as POU5F1), Nanog and Sox2, and have an impact upon the differentiation of mESCs towards neural fates. In assessing potential upstream inputs to this new p120-catenin-REST-CoREST pathway, REST gene targets were found to respond to the level of E-cadherin, with evidence suggesting that p120-catenin transduces signals between E-cadherin and the nucleus. In summary, we provide the first evidence for a direct upstream modulator and/or pathway regulating REST-CoREST, and reveal a substantial role for p120-catenin in the modulation of stem cell differentiation.
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Affiliation(s)
- Moonsup Lee
- Department of Biochemistry and Molecular Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA Program in Genes and Development, The University of Texas Graduate School of Biomedical Science-Houston, Houston, TX 77030, USA
| | - Hong Ji
- Department of Biochemistry and Molecular Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yasuhide Furuta
- Laboratory for Animal Resources and Genetic Engineering, Riken Center for Developmental Biology, 2-2-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Jae-il Park
- Department of Experimental Radiation Oncology, Division of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
| | - Pierre D McCrea
- Department of Biochemistry and Molecular Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA Program in Genes and Development, The University of Texas Graduate School of Biomedical Science-Houston, Houston, TX 77030, USA
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10
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Rappe U, Schlechter T, Aschoff M, Hotz-Wagenblatt A, Hofmann I. Nuclear ARVCF protein binds splicing factors and contributes to the regulation of alternative splicing. J Biol Chem 2014; 289:12421-34. [PMID: 24644279 DOI: 10.1074/jbc.m113.530717] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The armadillo repeat protein ARVCF is a component of adherens junctions. Similar to related proteins, such as p120-catenin and β-catenin, with known signaling functions, localization studies indicate a cytoplasmic and a nuclear pool of ARVCF. We find that ARVCF interacts with different proteins involved in mRNA-processing: the splicing factor SRSF1 (SF2/ASF), the RNA helicase p68 (DDX5), and the heterogeneous nuclear ribonucleoprotein hnRNP H2. All three proteins bind to ARVCF in an RNA-independent manner. Furthermore, ARVCF occurs in large RNA-containing complexes that contain both spliced and unspliced mRNAs of housekeeping genes. By domain analysis, we show that interactions occur via the ARVCF C terminus. Overexpression of ARVCF, p68, SRSF1, and hnRNP H2 induces a significant increase in splicing activity of a reporter mRNA. Upon depletion of ARVCF followed by RNA sequence analysis, several alternatively spliced transcripts are significantly changed. Therefore, we conclude that nuclear ARVCF influences splicing of pre-mRNAs. We hypothesize that ARVCF is involved in alternative splicing, generating proteomic diversity, and its deregulation may contribute to diseased states, such as cancer and neurological disorders.
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Affiliation(s)
- Ulrike Rappe
- From the Division of Vascular Oncology and Metastasis, German Cancer Research Center, DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany
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11
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Munoz WA, Lee M, Miller RK, Ahmed Z, Ji H, Link TM, Lee GR, Kloc M, Ladbury JE, McCrea PD. Plakophilin-3 catenin associates with the ETV1/ER81 transcription factor to positively modulate gene activity. PLoS One 2014; 9:e86784. [PMID: 24475179 PMCID: PMC3903613 DOI: 10.1371/journal.pone.0086784] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 12/13/2013] [Indexed: 12/31/2022] Open
Abstract
Members of the plakophilin-catenin sub-family (Pkp-1, -2, and -3) facilitate the linkage of desmosome junctional components to each other (e.g. desmosomal cadherins to desmoplakin) and the intermediate-filament cytoskeleton. Pkps also contribute to desmosomal stabilization and the trafficking of its components. The functions of Pkps outside of the desmosome are less well studied, despite evidence suggesting their roles in mRNA regulation, small-GTPase modulation (e.g. mid-body scission) during cell division, and cell survival following DNA damage. Pkp-catenins are further believed to have roles in the nucleus given their nuclear localization in some contexts and the known nuclear roles of structurally related catenins, such as beta-catenin and p120-catenin. Further, Pkp-catenin activities in the nuclear compartment have become of increased interest with the identification of interactions between Pkp2-catenin and RNA Pol III and Pkp1 with single-stranded DNA. Consistent with earlier reports suggesting possible nuclear roles in development, we previously demonstrated prominent nuclear localization of Pkp3 in Xenopus naïve ectoderm (“animal cap”) cells and recently resolved a similar localization in mouse embryonic stem cells. Here, we report the association and positive functional interaction of Pkp3 with a transcription factor, Ets variant gene 1 (ETV1), which has critical roles in neural development and prominent roles in human genetic disease. Our results are the first to report the interaction of a sequence-specific transcription factor with any Pkp. Using Xenopus laevis embryos and mammalian cells, we provide evidence for the Pkp3:ETV1 complex on both biochemical and functional levels.
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Affiliation(s)
- William A. Munoz
- Department of Biochemistry and Molecular Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
- Program in Genes & Development, The University of Texas Graduate School of Biomedical Science - Houston, Texas, United States of America
| | - Moonsup Lee
- Department of Biochemistry and Molecular Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
- Program in Genes & Development, The University of Texas Graduate School of Biomedical Science - Houston, Texas, United States of America
| | - Rachel K. Miller
- Department of Biochemistry and Molecular Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Zamal Ahmed
- Department of Biochemistry and Molecular Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
- Center for Biomolecular Structure and Function, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Hong Ji
- Department of Biochemistry and Molecular Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Todd M. Link
- Department of Biochemistry and Molecular Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
- Center for Biomolecular Structure and Function, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Gilbert R. Lee
- Department of Biochemistry and Molecular Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
- Center for Biomolecular Structure and Function, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Malgorzata Kloc
- Department of Biochemistry and Molecular Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
- Department of Surgery, Houston Methodist, Houston Methodist Research Institute, Houston, Texas, United States of America
| | - John E. Ladbury
- Department of Biochemistry and Molecular Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
- Program in Genes & Development, The University of Texas Graduate School of Biomedical Science - Houston, Texas, United States of America
- Center for Biomolecular Structure and Function, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Pierre D. McCrea
- Department of Biochemistry and Molecular Biology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
- Program in Genes & Development, The University of Texas Graduate School of Biomedical Science - Houston, Texas, United States of America
- * E-mail:
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12
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Chhatriwala MK, Cipolat S, Sevilla LM, Nachat R, Watt FM. Exons 5-15 of kazrin are dispensable for murine epidermal morphogenesis and homeostasis. J Invest Dermatol 2012; 132:1977-87. [PMID: 22513779 PMCID: PMC3398255 DOI: 10.1038/jid.2012.110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 02/23/2012] [Accepted: 03/01/2012] [Indexed: 12/22/2022]
Abstract
Kazrin binds to periplakin and ARVCF catenin, and regulates adhesion and differentiation of cultured human keratinocytes. To explore kazrin function in vivo, we generated a kazrin gene-trap mouse in which only exons 1-4 were expressed, fused to β-galactosidase. On transient transfection, the protein encoded by exons 1-4 did not enter the nucleus, but did cause keratinocyte shape changes. The mice had no obvious defects in skin development or homeostasis, and periplakin and desmoplakin localization was normal. Expression of the kazrin-β-galactosidase fusion protein faithfully reported endogenous kazrin expression. Kazrin was not expressed in embryonic epidermis and was first detected at postnatal day 1. In adult mice, epidermal kazrin expression was less widespread than in humans and Xenopus, being confined to the bulb of anagen hair follicles, the infundibulum, and parakeratotic tail epidermis. In anagen bulbs, kazrin was expressed by a band of cells with elongated morphology and low desmoplakin levels, suggesting a role in morphogenetic cell movements. We conclude that exons 5-15 of kazrin, encoding the nuclear localization signal and C-terminal domain, are not required for epidermal development and function. The previously reported role of kazrin in regulating cell shape appears to reside within the N-terminal coiled-coil domain encoded by exons 1-4.
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Affiliation(s)
- Mariya K Chhatriwala
- Wellcome Trust Centre for Stem Cell Research, Cambridge University, Cambridge, UK
| | - Sara Cipolat
- CRUK Cambridge Research Institute, Li Ka Shing Centre, Cambridge, UK
| | - Lisa M Sevilla
- Instituto de Biomedicina de Valencia, CSIC, Valencia, Spain
| | | | - Fiona M Watt
- Wellcome Trust Centre for Stem Cell Research, Cambridge University, Cambridge, UK
- CRUK Cambridge Research Institute, Li Ka Shing Centre, Cambridge, UK
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13
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Tanaka H, Takafuji K, Taguchi A, Wiriyasermkul P, Ohgaki R, Nagamori S, Suh PG, Kanai Y. Linkage of N-cadherin to multiple cytoskeletal elements revealed by a proteomic approach in hippocampal neurons. Neurochem Int 2012; 61:240-50. [PMID: 22609377 DOI: 10.1016/j.neuint.2012.05.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 05/07/2012] [Accepted: 05/09/2012] [Indexed: 01/21/2023]
Abstract
The CNS synapse is an adhesive junction differentiated for chemical neurotransmission and is equipped with presynaptic vesicles and postsynaptic neurotransmitter receptors. Cell adhesion molecule cadherins not only maintain connections between pre- and postsynaptic membranes but also modulate the efficacy of synaptic transmission. Although the components of the cadherin-mediated adhesive apparatus have been studied extensively in various cell systems, the complete picture of these components, particularly at the synaptic junction, remains elusive. Here, we describe the proteomic assortment of the N-cadherin-mediated synaptic adhesion apparatus in cultured hippocampal neurons. N-cadherin immunoprecipitated from Triton X-100-solubilized neuronal extract contained equal amounts of β- and α-catenins, as well as F-actin-related membrane anchor proteins such as integrins bridged with α-actinin-4, and Na(+)/K(+)-ATPase bridged with spectrins. A close relative of β-catenin, plakoglobin, and its binding partner, desmoplakin, were also found, suggesting that a subset of the N-cadherin-mediated adhesive apparatus also anchors intermediate filaments. Moreover, dynein heavy chain and LEK1/CENPF/mitosin were found. This suggests that internalized pools of N-cadherin in trafficking vesicles are conveyed by dynein motors on microtubules. In addition, ARVCF and NPRAP/neurojungin/δ2-catenin, but not p120ctn/δ1-catenin or plakophilins-1, -2, -3, -4 (p0071), were found, suggesting other possible bridges to microtubules. Finally, synaptic stimulation by membrane depolarization resulted in an increased 93-kDa band, which corresponded to proteolytically truncated β-catenin. The integration of three different classes of cytoskeletal systems found in the synaptic N-cadherin complex may imply a dynamic switching of adhesive scaffolds in response to synaptic activity.
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Affiliation(s)
- Hidekazu Tanaka
- Department of Pharmacology, Osaka University School of Medicine, Osaka 565-0871, Japan.
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14
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Cho K, Lee M, Gu D, Munoz WA, Ji H, Kloc M, McCrea PD. Kazrin, and its binding partners ARVCF- and delta-catenin, are required for Xenopus laevis craniofacial development. Dev Dyn 2011; 240:2601-12. [PMID: 22028074 DOI: 10.1002/dvdy.22721] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2011] [Indexed: 11/07/2022] Open
Abstract
The novel adaptor protein Kazrin associates with multifunctional entities including p120-subfamily members (ARVCF-, delta-, and p0071-catenin). Critical contributions of Kazrin to development or homeostasis are indicated with respect to ectoderm formation, integrity and keratinocyte differentiation, whereas its presence in varied tissues suggests broader roles. We find that Kazrin is maternally loaded, is expressed across development and becomes enriched in the forming head. Kazrin's potential contributions to craniofacial development were probed by means of knockdown in the prospective anterior neural region. Cartilaginous head structures as well as eyes on injected sides were reduced in size, with molecular markers suggesting an impact upon neural crest cell establishment and migration. Similar effects followed the depletion of ARVCF (or delta-catenin), with Kazrin:ARVCF functional interplay supported upon ARVCF partial rescue of Kazrin knockdown phenotypes. Thus, Kazrin and its associating ARVCF- and delta-catenins, are required to form craniofacial tissues originating from cranial neural crest and precordal plate.
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Affiliation(s)
- Kyucheol Cho
- Department of Biochemistry and Molecular Biology, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
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15
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Hong JY, Park JI, Cho K, Gu D, Ji H, Artandi SE, McCrea PD. Shared molecular mechanisms regulate multiple catenin proteins: canonical Wnt signals and components modulate p120-catenin isoform-1 and additional p120 subfamily members. J Cell Sci 2010; 123:4351-65. [PMID: 21098636 DOI: 10.1242/jcs.067199] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Wnt signaling pathways have fundamental roles in animal development and tumor progression. Here, employing Xenopus embryos and mammalian cell lines, we report that the degradation machinery of the canonical Wnt pathway modulates p120-catenin protein stability through mechanisms shared with those regulating β-catenin. For example, in common with β-catenin, exogenous expression of destruction complex components, such as GSK3β and axin, promotes degradation of p120-catenin. Again in parallel with β-catenin, reduction of canonical Wnt signals upon depletion of LRP5 and LRP6 results in p120-catenin degradation. At the primary sequence level, we resolved conserved GSK3β phosphorylation sites in the amino-terminal region of p120-catenin present exclusively in isoform-1. Point-mutagenesis of these residues inhibited the association of destruction complex components, such as those involved in ubiquitylation, resulting in stabilization of p120-catenin. Functionally, in line with predictions, p120 stabilization increased its signaling activity in the context of the p120-Kaiso pathway. Importantly, we found that two additional p120-catenin family members, ARVCF-catenin and δ-catenin, associate with axin and are degraded in its presence. Thus, as supported using gain- and loss-of-function approaches in embryo and cell line systems, canonical Wnt signals appear poised to have an impact upon a breadth of catenin biology in vertebrate development and, possibly, human cancers.
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Affiliation(s)
- Ji Yeon Hong
- Department of Biochemistry and Molecular Biology, University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
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