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Park JG, Jeon H, Hwang KY, Cha SS, Han RT, Cho H, Lee IG. Cargo specificity, regulation, and therapeutic potential of cytoplasmic dynein. Exp Mol Med 2024; 56:827-835. [PMID: 38556551 PMCID: PMC11059388 DOI: 10.1038/s12276-024-01200-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 04/02/2024] Open
Abstract
Intracellular retrograde transport in eukaryotic cells relies exclusively on the molecular motor cytoplasmic dynein 1. Unlike its counterpart, kinesin, dynein has a single isoform, which raises questions about its cargo specificity and regulatory mechanisms. The precision of dynein-mediated cargo transport is governed by a multitude of factors, including temperature, phosphorylation, the microtubule track, and interactions with a family of activating adaptor proteins. Activating adaptors are of particular importance because they not only activate the unidirectional motility of the motor but also connect a diverse array of cargoes with the dynein motor. Therefore, it is unsurprising that dysregulation of the dynein-activating adaptor transport machinery can lead to diseases such as spinal muscular atrophy, lower extremity, and dominant. Here, we discuss dynein motor motility within cells and in in vitro, and we present several methodologies employed to track the motion of the motor. We highlight several newly identified activating adaptors and their roles in regulating dynein. Finally, we explore the potential therapeutic applications of manipulating dynein transport to address diseases linked to dynein malfunction.
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Affiliation(s)
- Jin-Gyeong Park
- Biomedical Research Division, Korea Institute of Science and Technology, Seoul, 02792, South Korea
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, South Korea
| | - Hanul Jeon
- Biomedical Research Division, Korea Institute of Science and Technology, Seoul, 02792, South Korea
- Department of Chemistry & Nanoscience, Ewha Womans University, Seoul, 03760, South Korea
| | - Kwang Yeon Hwang
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, South Korea
| | - Sun-Shin Cha
- Department of Chemistry & Nanoscience, Ewha Womans University, Seoul, 03760, South Korea
| | - Rafael T Han
- Biomedical Research Division, Korea Institute of Science and Technology, Seoul, 02792, South Korea
- KHU-KIST Department of Converging Science and Technology, Kyunghee University, Seoul, 02447, South Korea
| | - Hyesung Cho
- Extreme Materials Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - In-Gyun Lee
- Biomedical Research Division, Korea Institute of Science and Technology, Seoul, 02792, South Korea.
- Department of Biological Chemistry, University of Science and Technology, Daejeon, 34113, South Korea.
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2
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Kurokawa S, Kobori T, Yoneda M, Ogawa Y, Honda Y, Kessoku T, Imajo K, Saito S, Nakajima A, Hotta K. Identification of differentially methylated regions associated with both liver fibrosis and hepatocellular carcinoma. BMC Gastroenterol 2024; 24:57. [PMID: 38302914 PMCID: PMC10832174 DOI: 10.1186/s12876-024-03149-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 01/25/2024] [Indexed: 02/03/2024] Open
Abstract
BACKGROUND Liver fibrosis is a major risk factor for hepatocellular carcinoma (HCC). We have previously reported that differentially methylated regions (DMRs) are correlated with the fibrosis stages of metabolic dysfunction-associated steatotic liver disease (MASLD). In this study, the methylation levels of those DMRs in liver fibrosis and subsequent HCC were examined. METHODS The methylation levels of DMRs were investigated using alcoholic cirrhosis and HCC (GSE60753). The data of hepatitis C virus-infected cirrhosis and HCC (GSE60753), and two datasets (GSE56588 and GSE89852) were used for replication analyses. The transcriptional analyses were performed using GSE114564, GSE94660, and GSE142530. RESULTS Hypomethylated DMR and increased transcriptional level of zinc finger and BTB domain containing 38 (ZBTB38) were observed in HCC. Hypermethylated DMRs, and increased transcriptional levels of forkhead box K1 (FOXK1) and zinc finger CCCH-type containing 3 (ZC3H3) were observed in HCC. The methylation levels of DMR of kazrin, periplakin interacting protein (KAZN) and its expression levels were gradually decreased as cirrhosis progressed to HCC. CONCLUSIONS Changes in the methylation and transcriptional levels of ZBTB38, ZC3H3, FOXK1, and KAZN are important for the development of fibrosis and HCC; and are therefore potential therapeutic targets and diagnostic tools for cirrhosis and HCC.
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Affiliation(s)
- Suguru Kurokawa
- Laboratoy of Pathophysiology and Pharmacotherapeutics, Faculty of Pharmacy, Osaka Ohtani University, 3-11-1 Nishikiori-kita, Tondabayashi, Osaka, 584-8540, Japan
| | - Takuro Kobori
- Laboratoy of Pathophysiology and Pharmacotherapeutics, Faculty of Pharmacy, Osaka Ohtani University, 3-11-1 Nishikiori-kita, Tondabayashi, Osaka, 584-8540, Japan
| | - Masato Yoneda
- Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Yuji Ogawa
- Department of Gastroenterology, National Hospital Organization Yokohama Medical Center, 3-60-2 Harajyuku, Totsuka, Yokohama, 245-8675, Japan
| | - Yasushi Honda
- Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Takaomi Kessoku
- Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
- Department of Palliative Medicine, International University of Health and Welfare Narita Hospital, 852, Hatakeda, Narita, 286-8520, Japan
| | - Kento Imajo
- Department of Gastroenterology, Shin-yurigaoka General Hospital, 255 Furusawatsuko, Asao, Kawasaki, 2150-0026, Japan
| | - Satoru Saito
- Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Atsushi Nakajima
- Department of Gastroenterology and Hepatology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Kikuko Hotta
- Laboratoy of Pathophysiology and Pharmacotherapeutics, Faculty of Pharmacy, Osaka Ohtani University, 3-11-1 Nishikiori-kita, Tondabayashi, Osaka, 584-8540, Japan.
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Huber LT, Kraus JM, Ezić J, Wanli A, Groth M, Laban S, Hoffmann TK, Wollenberg B, Kestler HA, Brunner C. Liquid biopsy: an examination of platelet RNA obtained from head and neck squamous cell carcinoma patients for predictive molecular tumor markers. EXPLORATION OF TARGETED ANTI-TUMOR THERAPY 2023; 4:422-446. [PMID: 37455825 PMCID: PMC10344902 DOI: 10.37349/etat.2023.00143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/01/2023] [Indexed: 07/18/2023] Open
Abstract
Aim Recently, a tumor cell-platelet interaction was identified in different tumor entities, resulting in a transfer of tumor-derived RNA into platelets, named further "tumor-educated platelets (TEP)". The present pilot study aims to investigate whether such a tumor-platelet transfer of RNA occurs also in patients suffering from head and neck squamous cell carcinoma (HNSCC). Methods Sequencing analysis of RNA derived from platelets of tumor patients (TPs) and healthy donors (HDs) were performed. Subsequently, quantitative reverse transcription-polymerase chain reaction (qRT-PCR) was used for verification of differentially expressed genes in platelets from TPs and HDs in a second cohort of patients and HDs. Data were analyzed by applying bioinformatic tools. Results Sequencing of RNA derived from the tumor as well as from platelets of TPs and HDs revealed 426 significantly differentially existing RNA, at which 406 RNA were more and 20 RNA less abundant in platelets from TPs in comparison to that of HDs. In TPs' platelets, abundantly existing RNA coding for 49 genes were detected, characteristically expressed in epithelial cells and RNA, the products of which are involved in tumor progression. Applying bioinformatic tools and verification on a second TP/HD cohort, collagen type I alpha 1 chain (COL1A1) and zinc finger protein 750 (ZNF750) were identified as the strongest potentially platelet-RNA-sequencing (RNA-seq)-based biomarkers for HNSCC. Conclusions These results indicate a transfer of tumor-derived messenger RNA (mRNA) into platelets of HNSCC patients. Therefore, analyses of a patient's platelet RNA could be an efficient option for liquid biopsy in order to diagnose HNSCC or to monitor tumorigenesis as well as therapeutic responses at any time and in real time.
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Affiliation(s)
- Lisa T. Huber
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany
| | - Johann M. Kraus
- Institute of Medical Systems Biology, Ulm University, 89081 Ulm, Germany
| | - Jasmin Ezić
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany
| | - Amin Wanli
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany
| | - Marco Groth
- Leibniz Institute of Aging – Fritz Lipmann Institute, CF DNA sequencing, 07745 Jena, Germany
| | - Simon Laban
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany
| | - Thomas K. Hoffmann
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany
| | - Barbara Wollenberg
- Clinic for Otorhinolaryngology, Head and Neck Surgery, Technical University of Munich, 80333 Munich, Germany
| | - Hans A. Kestler
- Institute of Medical Systems Biology, Ulm University, 89081 Ulm, Germany
| | - Cornelia Brunner
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany
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Hong B, Zhang X, Du X, Yang D, Hu Z, Zhang X, Zhang N. Exploring the Potential Driver Gene Mutations That Promote Renal Cancer Cell Metastasis and Implantation Based on Circulating Tumor Cells Culture. Diagnostics (Basel) 2023; 13:diagnostics13111855. [PMID: 37296706 DOI: 10.3390/diagnostics13111855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Studies have shown that the circulating tumor cell (CTC) is a necessary condition for the invasion and distant metastasis of renal cell carcimona (RCC). However, few CTCs-related gene mutations have been developed which could promote the metastasis and implantation of RCC. The objective of this study is to explore the potential driver gene mutations that promote RCC metastasis and implantation based on CTCs culture. Fifteen patients with primary mRCC and three healthy subjects were included, and peripheral blood was obtained. After the preparation of synthetic biological scaffolds, peripheral blood CTCs were cultured. Successful cultured CTCs were applied to construct CTCs-derived xenograft (CDX) models, followed by DNA extraction, whole exome sequencing (WES) and bioinformatics analysis. Synthetic biological scaffolds were constructed based on previously applied techniques, and peripheral blood CTCs culture was successfully performed. We then constructed CDX models and performed WES, and explored the potential driver gene mutations that may promote RCC metastasis and implantation. Bioinformatics analysis showed that KAZN and POU6F2 may be closely related to the prognosis of RCC. We successfully performed the culture of peripheral blood CTCs and, on this basis we initially explored the potential driver mutations for the metastasis and implantation of RCC.
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Affiliation(s)
- Baoan Hong
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Urology, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Xuezhou Zhang
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Xin Du
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Urology, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Dazhi Yang
- Acrogenic Biotechnologies INC, Rockville, MD 20850, USA
| | - Zhiyuan Hu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Xiuli Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Ning Zhang
- Department of Urology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
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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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6
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Arderiu G, Mendieta G, Gallinat A, Lambert C, Díez-Caballero A, Ballesta C, Badimon L. Type 2 Diabetes in Obesity: A Systems Biology Study on Serum and Adipose Tissue Proteomic Profiles. Int J Mol Sci 2023; 24:ijms24010827. [PMID: 36614270 PMCID: PMC9821208 DOI: 10.3390/ijms24010827] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/16/2022] [Accepted: 12/22/2022] [Indexed: 01/04/2023] Open
Abstract
Obesity is associated with metabolic disorders such as insulin resistance and type 2 diabetes mellitus (T2DM), further increasing an already heightened cardiovascular risk. Here, amongst obese class III bariatric surgery patients, we have investigated the effect of T2DM in serum and in two, same patient, adipose tissue (AT) depots through proteomic profile expression analyses. Serum and AT samples from subcutaneous (SAT) and visceral (VAT) fat were collected during bariatric surgery. Bead-based targeted multiplex assay systems were used to simultaneously detect and quantify multiple targets in serum samples (targeted proteomics) and analyze changes in adipokine serum composition. AT samples were assessed through an untargeted proteomics approach. Through a systems biology analysis of the proteomic data, information on the affected biological pathways was acquired. In obese class III individuals, the presence of T2DM induced a significantly higher systemic release of ghrelin, GLP-1, glucagon, MMP3, BAFF, chitinase 3-like 1, TNF-R1 and TNF-R2, and a lower systemic release of IL-8. SAT and VAT proteomes belonging to the same patient showed significant differences in local protein content. While the proteins upregulated in VAT were indicative of metabolic dysregulation, SAT protein upregulation suggested adequate endocrine regulation. The presence of T2DM significantly affected VAT protein composition through the upregulation of dysregulating metabolic pathways, but SAT protein composition was not significantly modified. Our results show that T2DM induces metabolic dysregulation in obese individuals with changes in systemic marker levels and impairment of proteostasis in VAT but not in SAT.
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Affiliation(s)
- Gemma Arderiu
- Cardiovascular-Program, Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CiberCV), 28029 Barcelona, Spain
- Correspondence: (G.A.); (L.B.); Tel.: +34-935565880 (G.A. & L.B.); Fax: +34-935565559 (G.A. & L.B.)
| | - Guiomar Mendieta
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), 28029 Madrid, Spain
| | - Alex Gallinat
- Cardiovascular-Program, Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain
| | - Carmen Lambert
- Cardiovascular-Program, Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain
- IPSA-Instituto de Investigación Sanitaria del Principado de Asturias, 33011 Oviedo, Spain
| | | | - Carlos Ballesta
- Centro Médico Teknon, Grupo Quiron Salut, 08022 Barcelona, Spain
| | - Lina Badimon
- Cardiovascular-Program, Institut d’Investigació Biomèdica Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CiberCV), 28029 Barcelona, Spain
- Correspondence: (G.A.); (L.B.); Tel.: +34-935565880 (G.A. & L.B.); Fax: +34-935565559 (G.A. & L.B.)
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7
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Fu R, Jiang X, Li G, Zhu Y, Zhang H. Junctional complexes in epithelial cells: sentinels for extracellular insults and intracellular homeostasis. FEBS J 2022; 289:7314-7333. [PMID: 34453866 DOI: 10.1111/febs.16174] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/13/2021] [Accepted: 08/27/2021] [Indexed: 01/13/2023]
Abstract
The cell-cell and cell-ECM junctions within the epithelial tissues are crucial anchoring structures that provide architectural stability, mechanical resistance, and permeability control. Their indispensable role as signaling hubs orchestrating cell shape-related changes such as proliferation, differentiation, migration, and apoptosis has also been well recognized. However, growing amount of evidence now suggests that the multitasking nature of epithelial junctions extends well beyond anchorage-dependent or cell shape change-related biological processes. In this review, we discuss the emerging roles of junctional complexes in regulating innate immune defense, stress resistance, and intracellular proteostasis of the epithelial cells, with emphasis on the upstream regulation of epithelial junctions on various aspects of the epithelial barrier.
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Affiliation(s)
- Rong Fu
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, China
| | - Xiaowan Jiang
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, China
| | - Gang Li
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, China
| | - Yi Zhu
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, China
| | - Huimin Zhang
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, China
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Colombo F, Illescas O, Noci S, Minnai F, Pintarelli G, Pettinicchio A, Vannelli A, Sorrentino L, Battaglia L, Cosimelli M, Dragani TA, Gariboldi M. Gut microbiota composition in colorectal cancer patients is genetically regulated. Sci Rep 2022; 12:11424. [PMID: 35794137 PMCID: PMC9259655 DOI: 10.1038/s41598-022-15230-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/21/2022] [Indexed: 12/21/2022] Open
Abstract
AbstractThe risk of colorectal cancer (CRC) depends on environmental and genetic factors. Among environmental factors, an imbalance in the gut microbiota can increase CRC risk. Also, microbiota is influenced by host genetics. However, it is not known if germline variants influence CRC development by modulating microbiota composition. We investigated germline variants associated with the abundance of bacterial populations in the normal (non-involved) colorectal mucosa of 93 CRC patients and evaluated their possible role in disease. Using a multivariable linear regression, we assessed the association between germline variants identified by genome wide genotyping and bacteria abundances determined by 16S rRNA gene sequencing. We identified 37 germline variants associated with the abundance of the genera Bacteroides, Ruminococcus, Akkermansia, Faecalibacterium and Gemmiger and with alpha diversity. These variants are correlated with the expression of 58 genes involved in inflammatory responses, cell adhesion, apoptosis and barrier integrity. Genes and bacteria appear to be involved in the same processes. In fact, expression of the pro-inflammatory genes GAL, GSDMD and LY6H was correlated with the abundance of Bacteroides, which has pro-inflammatory properties; abundance of the anti-inflammatory genus Faecalibacterium correlated with expression of KAZN, with barrier-enhancing functions. Both the microbiota composition and local inflammation are regulated, at least partially, by the same germline variants. These variants may regulate the microenvironment in which bacteria grow and predispose to the development of cancer. Identification of these variants is the first step to identifying higher-risk individuals and proposing tailored preventive treatments that increase beneficial bacterial populations.
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9
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Zhu S, Bao H, Zhang MC, Liu H, Wang Y, Lin C, Zhao X, Liu SL. KAZN as a diagnostic marker in ovarian cancer: a comprehensive analysis based on microarray, mRNA-sequencing, and methylation data. BMC Cancer 2022; 22:662. [PMID: 35710397 PMCID: PMC9204993 DOI: 10.1186/s12885-022-09747-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 06/09/2022] [Indexed: 11/29/2022] Open
Abstract
Background Ovarian cancer (OC) is among the deadliest malignancies in women and the lack of appropriate markers for early diagnosis leads to poor prognosis in most cases. Previous studies have shown that KAZN is involved in multiple biological processes during development, such as cell proliferation, differentiation, and apoptosis, so defects or aberrant expression of KAZN might cause queer cell behaviors such as malignancy. Here we evaluated the KAZN expression and methylation levels for possible use as an early diagnosis marker for OC. Methods We used data from Gene Expression Omnibus (GEO) microarrays, The Cancer Genome Atlas (TCGA), and Clinical Proteomic Tumor Analysis Consortium (CPTAC) to investigate the correlations between KAZN expression and clinical characteristics of OC by comparing methylation levels of normal and OC samples. The relationships among differentially methylated sites in the KAZN gene, corresponding KAZN mRNA expression levels and prognosis were analyzed. Results KAZN was up-regulated in ovarian epithelial tumors and the expression of KAZN was correlated with the patients’ survival time. KAZN CpG site cg17657618 was positively correlated with the expression of mRNA and the methylation levels were significantly differential between the group of stage “I and II” and the group of stage “III and IV”. This study also presents a new method to classify tumor and normal tissue in OC using DNA methylation pattern in the KAZN gene body region. Conclusions KAZN was involved in ovarian cancer pathogenesis. Our results demonstrate a new direction for ovarian cancer research and provide a potential diagnostic biomarker as well as a novel therapeutic target for clinical application. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-022-09747-2.
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Affiliation(s)
- Songling Zhu
- Genomics Research Center (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China), College of Pharmacy, Harbin Medical University, Harbin, China.,HMU-UCCSM Centre for Infection and Genomics, Harbin Medical University, Harbin, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, China
| | - Hongxia Bao
- Genomics Research Center (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China), College of Pharmacy, Harbin Medical University, Harbin, China.,HMU-UCCSM Centre for Infection and Genomics, Harbin Medical University, Harbin, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, China
| | - Meng-Chun Zhang
- Genomics Research Center (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China), College of Pharmacy, Harbin Medical University, Harbin, China.,HMU-UCCSM Centre for Infection and Genomics, Harbin Medical University, Harbin, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, China
| | - Huidi Liu
- Genomics Research Center (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China), College of Pharmacy, Harbin Medical University, Harbin, China.,HMU-UCCSM Centre for Infection and Genomics, Harbin Medical University, Harbin, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, China
| | - Yao Wang
- Genomics Research Center (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China), College of Pharmacy, Harbin Medical University, Harbin, China.,HMU-UCCSM Centre for Infection and Genomics, Harbin Medical University, Harbin, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, China
| | - Caiji Lin
- Genomics Research Center (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China), College of Pharmacy, Harbin Medical University, Harbin, China.,HMU-UCCSM Centre for Infection and Genomics, Harbin Medical University, Harbin, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, China
| | - Xingjuan Zhao
- Physical Examination Center, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Shu-Lin Liu
- Genomics Research Center (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China), College of Pharmacy, Harbin Medical University, Harbin, China. .,HMU-UCCSM Centre for Infection and Genomics, Harbin Medical University, Harbin, China. .,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, China. .,Department of Microbiology, Immunology and Infectious Diseases, University of Calgary, Calgary, Canada.
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Gumbarewicz E, Tylżanowski P, Łuszczki J, Kałafut J, Czerwonka A, Szumiło J, Wawruszak A, Kupisz K, Polberg K, Smok-Kalwat J, Stepulak A. Differential molecular response of larynx cancer cell lines to combined VPA/CDDP treatment. Am J Cancer Res 2021; 11:2821-2837. [PMID: 34249430 PMCID: PMC8263637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 05/14/2021] [Indexed: 06/13/2023] Open
Abstract
Successful treatment of advanced larynx squamous cell carcinoma (LSCC) remains a challenge, mainly due to limited response to chemotherapy and the phenomenon of the drug resistance. Therefore, new chemotherapeutic solutions are needed. The aim of this study was to explore benefit of combined cisplatin (CDDP) and valproic acid (VPA) therapy in patients' derived LSCC cell lines. Cell viability assay was used to establish cellular response to the drug by isobolography followed by RNA sequencing (RNAseq) analysis. Danio rerio were used for in vivo studies. Depending on the cell line, we found that the combinations of drugs resulted in synergistic or antagonistic pharmacological interaction, which was accompanied by significant changes in genes expression profiles. The presented therapeutic scheme efficiently blocked tumor growth in an in vivo model, corresponding to the in vitro performed studies. Interestingly the RK5 cell line, upon the combined treatment acquired a molecular profile typically associated with epithelial to mesenchymal transition (EMT). Hence, our studies demonstrates that patient-specific personalized therapy of larynx cancer should be considered and the combination of cisplatin and valproic acid should be explored as a potential therapeutic strategy in the treatment of larynx cancer.
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Affiliation(s)
- Ewelina Gumbarewicz
- Department of Biochemistry and Molecular Biology, Medical University of LublinChodzki 1 St., 20-093 Lublin, Poland
| | - Przemko Tylżanowski
- Department of Biochemistry and Molecular Biology, Medical University of LublinChodzki 1 St., 20-093 Lublin, Poland
- Laboratory for Developmental and Stem Cell Biology, Department of Development and Regeneration, Skeletal Biology and Engineering Research Centre, University of LeuvenLeuven, Belgium
| | | | - Joanna Kałafut
- Department of Biochemistry and Molecular Biology, Medical University of LublinChodzki 1 St., 20-093 Lublin, Poland
| | - Arkadiusz Czerwonka
- Department of Biochemistry and Molecular Biology, Medical University of LublinChodzki 1 St., 20-093 Lublin, Poland
| | - Justyna Szumiło
- Department of Clinical Pathomorphology, Medical University of LublinLublin, Poland
| | - Anna Wawruszak
- Department of Biochemistry and Molecular Biology, Medical University of LublinChodzki 1 St., 20-093 Lublin, Poland
| | - Krzysztof Kupisz
- Department of Otolaryngology and Laryngeal Oncology, Medical University of LublinLublin, Poland
- Department of Otolaryngology, Center of Oncology of The Lublin RegionLublin, Poland
| | | | | | - Andrzej Stepulak
- Department of Biochemistry and Molecular Biology, Medical University of LublinChodzki 1 St., 20-093 Lublin, Poland
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11
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Wesley T, Berzins S, Kannourakis G, Ahmed N. The attributes of plakins in cancer and disease: perspectives on ovarian cancer progression, chemoresistance and recurrence. Cell Commun Signal 2021; 19:55. [PMID: 34001250 PMCID: PMC8127266 DOI: 10.1186/s12964-021-00726-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 02/20/2021] [Indexed: 02/06/2023] Open
Abstract
The plakin family of cytoskeletal proteins play an important role in cancer progression yet are under-studied in cancer, especially ovarian cancer. These large cytoskeletal proteins have primary roles in the maintenance of cytoskeletal integrity but are also associated with scaffolds of intermediate filaments and hemidesmosomal adhesion complexes mediating signalling pathways that regulate cellular growth, migration, invasion and differentiation as well as stress response. Abnormalities of plakins, and the closely related spectraplakins, result in diseases of the skin, striated muscle and nervous tissue. Their prevalence in epithelial cells suggests that plakins may play a role in epithelial ovarian cancer progression and recurrence. In this review article, we explore the roles of plakins, particularly plectin, periplakin and envoplakin in disease-states and cancers with emphasis on ovarian cancer. We discuss the potential role the plakin family of proteins play in regulating cancer cell growth, survival, migration, invasion and drug resistance. We highlight potential relationships between plakins, epithelial-mesenchymal transition (EMT) and cancer stem cells (CSCs) and discuss how interaction of these processes may affect ovarian cancer progression, chemoresistance and ultimately recurrence. We propose that molecular changes in the expression of plakins leads to the transition of benign ovarian tumours to carcinomas, as well as floating cellular aggregates (commonly known as spheroids) in the ascites microenvironment, which may contribute to the sustenance and progression of the disease. In this review, attempts have been made to understand the crucial changes in plakin expression in relation to progression and recurrence of ovarian cancer. Video Abstract
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Affiliation(s)
- Tamsin Wesley
- Fiona Elsey Cancer Research Institute, Ballarat Technology Central Park, Suites 23-26, 106-110 Lydiard Street South, Ballarat, VIC, 3353, Australia.,School of Science, Psychology and Sport, Federation University Australia, Ballarat, VIC, 3010, Australia
| | - Stuart Berzins
- Fiona Elsey Cancer Research Institute, Ballarat Technology Central Park, Suites 23-26, 106-110 Lydiard Street South, Ballarat, VIC, 3353, Australia.,School of Science, Psychology and Sport, Federation University Australia, Ballarat, VIC, 3010, Australia
| | - George Kannourakis
- Fiona Elsey Cancer Research Institute, Ballarat Technology Central Park, Suites 23-26, 106-110 Lydiard Street South, Ballarat, VIC, 3353, Australia.,School of Science, Psychology and Sport, Federation University Australia, Ballarat, VIC, 3010, Australia
| | - Nuzhat Ahmed
- Fiona Elsey Cancer Research Institute, Ballarat Technology Central Park, Suites 23-26, 106-110 Lydiard Street South, Ballarat, VIC, 3353, Australia. .,School of Science, Psychology and Sport, Federation University Australia, Ballarat, VIC, 3010, Australia. .,Department of Obstetrics and Gynaecology, University of Melbourne, Melbourne, VIC, 3052, Australia. .,Centre for Reproductive Health, The Hudson Institute of Medical Research and Department of Translational Medicine, Monash University, Melbourne, VIC, 3168, Australia.
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12
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Díaz-Santiago E, Jabato FM, Rojano E, Seoane P, Pazos F, Perkins JR, Ranea JAG. Phenotype-genotype comorbidity analysis of patients with rare disorders provides insight into their pathological and molecular bases. PLoS Genet 2020; 16:e1009054. [PMID: 33001999 PMCID: PMC7553355 DOI: 10.1371/journal.pgen.1009054] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 10/13/2020] [Accepted: 08/16/2020] [Indexed: 12/15/2022] Open
Abstract
Genetic and molecular analysis of rare disease is made difficult by the small numbers of affected patients. Phenotypic comorbidity analysis can help rectify this by combining information from individuals with similar phenotypes and looking for overlap in terms of shared genes and underlying functional systems. However, few studies have combined comorbidity analysis with genomic data. We present a computational approach that connects patient phenotypes based on phenotypic co-occurence and uses genomic information related to the patient mutations to assign genes to the phenotypes, which are used to detect enriched functional systems. These phenotypes are clustered using network analysis to obtain functionally coherent phenotype clusters. We applied the approach to the DECIPHER database, containing phenotypic and genomic information for thousands of patients with heterogeneous rare disorders and copy number variants. Validity was demonstrated through overlap with known diseases, co-mention within the biomedical literature, semantic similarity measures, and patient cluster membership. These connected pairs formed multiple phenotype clusters, showing functional coherence, and mapped to genes and systems involved in similar pathological processes. Examples include claudin genes from the 22q11 genomic region associated with a cluster of phenotypes related to DiGeorge syndrome and genes related to the GO term anterior/posterior pattern specification associated with abnormal development. The clusters generated can help with the diagnosis of rare diseases, by suggesting additional phenotypes for a given patient and potential underlying functional systems. Other tools to find causal genes based on phenotype were also investigated. The approach has been implemented as a workflow, named PhenCo, which can be adapted to any set of patients for which phenomic and genomic data is available. Full details of the analysis, including the clusters formed, their constituent functional systems and underlying genes are given. Code to implement the workflow is available from GitHub. Although rare diseases each affect a small number of people, taken together they affect millions. Better diagnosis and understanding of the underlying mechanisms are needed. By combining phenotypic data for many rare disease patients, we can build clusters of comorbid phenotypes that tend to co-occur together. By using genomic information, we can supplement these clusters and look for related genes and functional systems, such as pathways and molecular mechanisms. We applied such an approach to thousands of rare disease patients from the DECIPHER resources. We were able to detect hundreds of pairs of comorbid phenotypes, and use them to build tens of phenotype clusters. By mapping genes to these phenotypes, based on data from the same patients, we were able to detect related genes and functional systems, such as genes mapping to the 22q11 genomic region underlying a cluster of phenotypes related to DiGeorge syndrome. To ensure that these clusters made sensible predictions, results were validated using literature co-mention, overlap with known disease and semantic similarity measures. These comorbidity patterns, along with their underlying molecular systems, can give important insights into disease mechanisms, moreover they can be used to direct differential-diagnosis of rare disease patients.
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Affiliation(s)
- Elena Díaz-Santiago
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
| | - Fernando M. Jabato
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
| | - Elena Rojano
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
| | - Pedro Seoane
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
- CIBER de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain
| | | | - James R. Perkins
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
- CIBER de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain
- The Biomedical Research Institute of Malaga (IBIMA), Malaga, Spain
- * E-mail:
| | - Juan A. G. Ranea
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
- CIBER de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain
- The Biomedical Research Institute of Malaga (IBIMA), Malaga, Spain
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13
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Barbitoff YA, Tsarev AA, Vashukova ES, Maksiutenko EM, Kovalenko LV, Belotserkovtseva LD, Glotov AS. A Data-Driven Review of the Genetic Factors of Pregnancy Complications. Int J Mol Sci 2020; 21:ijms21093384. [PMID: 32403311 PMCID: PMC7246997 DOI: 10.3390/ijms21093384] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 01/01/2023] Open
Abstract
Over the recent years, many advances have been made in the research of the genetic factors of pregnancy complications. In this work, we use publicly available data repositories, such as the National Human Genome Research Institute GWAS Catalog, HuGE Navigator, and the UK Biobank genetic and phenotypic dataset to gain insights into molecular pathways and individual genes behind a set of pregnancy-related traits, including the most studied ones—preeclampsia, gestational diabetes, preterm birth, and placental abruption. Using both HuGE and GWAS Catalog data, we confirm that immune system and, in particular, T-cell related pathways are one of the most important drivers of pregnancy-related traits. Pathway analysis of the data reveals that cell adhesion and matrisome-related genes are also commonly involved in pregnancy pathologies. We also find a large role of metabolic factors that affect not only gestational diabetes, but also the other traits. These shared metabolic genes include IGF2, PPARG, and NOS3. We further discover that the published genetic associations are poorly replicated in the independent UK Biobank cohort. Nevertheless, we find novel genome-wide associations with pregnancy-related traits for the FBLN7, STK32B, and ACTR3B genes, and replicate the effects of the KAZN and TLE1 genes, with the latter being the only gene identified across all data resources. Overall, our analysis highlights central molecular pathways for pregnancy-related traits, and suggests a need to use more accurate and sophisticated association analysis strategies to robustly identify genetic risk factors for pregnancy complications.
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Affiliation(s)
- Yury A. Barbitoff
- Bioinformatics Institute, 197342 St. Petersburg, Russia; (Y.A.B.); (A.A.T.)
- Department of Genetics and Biotechnology, Saint-Petersburg State University, 199034 St. Petersburg, Russia;
- Department of Genomic Medicine, D.O.Ott Research Institute for Obstetrics, Gynaecology and Reproductology, 199034 St. Petersburg, Russia;
| | - Alexander A. Tsarev
- Bioinformatics Institute, 197342 St. Petersburg, Russia; (Y.A.B.); (A.A.T.)
- Department of Biochemistry, Saint-Petersburg State University, 199034 St. Petersburg, Russia
| | - Elena S. Vashukova
- Department of Genomic Medicine, D.O.Ott Research Institute for Obstetrics, Gynaecology and Reproductology, 199034 St. Petersburg, Russia;
| | - Evgeniia M. Maksiutenko
- Department of Genetics and Biotechnology, Saint-Petersburg State University, 199034 St. Petersburg, Russia;
- St. Petersburg Branch, Vavilov Institute of General Genetics, Russian Academy of Sciences, 199034 St. Petersburg, Russia
| | - Liudmila V. Kovalenko
- Department of Pathology, Medical Institute, Surgut State University, 628416 Surgut, Russia;
| | - Larisa D. Belotserkovtseva
- Department of Obstetrics, Gynecology and Perinatology, Medical Institute, Surgut State University, 628416 Surgut, Russia;
| | - Andrey S. Glotov
- Department of Genomic Medicine, D.O.Ott Research Institute for Obstetrics, Gynaecology and Reproductology, 199034 St. Petersburg, Russia;
- Laboratory of Biobanking and Genomic Medicine, Saint-Petersburg State University, 199034 St. Petersburg, Russia
- Correspondence:
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14
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Gujrati M, Mittal R, Ekal L, Mishra RK. SUMOylation of periplakin is critical for efficient reorganization of keratin filament network. Mol Biol Cell 2018; 30:357-369. [PMID: 30516430 PMCID: PMC6589569 DOI: 10.1091/mbc.e18-04-0244] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The architecture of the cytoskeleton and its remodeling are tightly regulated by dynamic reorganization of keratin-rich intermediate filaments. Plakin family proteins associate with the network of intermediate filaments (IFs) and affect its reorganization during migration, differentiation, and response to stress. The smallest plakin, periplakin (PPL), interacts specifically with intermediate filament proteins K8, K18, and vimentin via its C-terminal linker domain. Here, we show that periplakin is SUMOylated at a conserved lysine in its linker domain (K1646) preferentially by small ubiquitin-like modifier 1 (SUMO1). Our data indicate that PPL SUMOylation is essential for the proper reorganization of the keratin IF network. Stresses perturbing intermediate-filament and cytoskeletal architecture induce hyper--SUMOylation of periplakin. Okadaic acid induced hyperphosphorylation-dependent collapse of the keratin IF network results in a similar hyper-SUMOylation of PPL. Strikingly, exogenous overexpression of a non-SUMOylatable periplakin mutant (K1646R) induced aberrant bundling and loose network interconnections of the keratin filaments. Time-lapse imaging of cells expressing the K1646R mutant showed the enhanced sensitivity of keratin filament collapse upon okadaic acid treatment. Our data identify an important regulatory role for periplakin SUMOylation in dynamic reorganization and stability of keratin IFs.
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Affiliation(s)
- Mansi Gujrati
- Nups and SUMO Biology Group, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Madhya Pradesh 462066, India
| | - Rohit Mittal
- MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK
| | - Lakhan Ekal
- Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK
| | - Ram Kumar Mishra
- Nups and SUMO Biology Group, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Madhya Pradesh 462066, India
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15
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Rhodes DA, Chen HC, Williamson JC, Hill A, Yuan J, Smith S, Rhodes H, Trowsdale J, Lehner PJ, Herrmann T, Eberl M. Regulation of Human γδ T Cells by BTN3A1 Protein Stability and ATP-Binding Cassette Transporters. Front Immunol 2018; 9:662. [PMID: 29670629 PMCID: PMC5893821 DOI: 10.3389/fimmu.2018.00662] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 03/19/2018] [Indexed: 11/13/2022] Open
Abstract
Activation of human Vγ9/Vδ2 T cells by "phosphoantigens" (pAg), the microbial metabolite (E)-4-hydroxy-3-methyl-but-2-enyl pyrophosphate (HMB-PP) and the endogenous isoprenoid intermediate isopentenyl pyrophosphate, requires expression of butyrophilin BTN3A molecules by presenting cells. However, the precise mechanism of activation of Vγ9/Vδ2 T cells by BTN3A molecules remains elusive. It is not clear what conformation of the three BTN3A isoforms transmits activation signals nor how externally delivered pAg accesses the cytosolic B30.2 domain of BTN3A1. To approach these problems, we studied two HLA haplo-identical HeLa cell lines, termed HeLa-L and HeLa-M, which showed marked differences in pAg-dependent stimulation of Vγ9/Vδ2 T cells. Levels of IFN-γ secretion by Vγ9/Vδ2 T cells were profoundly increased by pAg loading, or by binding of the pan-BTN3A specific agonist antibody CD277 20.1, in HeLa-M compared to HeLa-L cells. IL-2 production from a murine hybridoma T cell line expressing human Vγ9/Vδ2 T cell receptor (TCR) transgenes confirmed that the differential responsiveness to HeLa-L and HeLa-M was TCR dependent. By tissue typing, both HeLa lines were shown to be genetically identical and full-length transcripts of the three BTN3A isoforms were detected in equal abundance with no sequence variation. Expression of BTN3A and interacting molecules, such as periplakin or RhoB, did not account for the functional variation between HeLa-L and HeLa-M cells. Instead, the data implicate a checkpoint controlling BTN3A1 stability and protein trafficking, acting at an early time point in its maturation. In addition, plasma membrane profiling was used to identify proteins upregulated in HMB-PP-treated HeLa-M. ABCG2, a member of the ATP-binding cassette (ABC) transporter family was the most significant candidate, which crucially showed reduced expression in HeLa-L. Expression of a subset of ABC transporters, including ABCA1 and ABCG1, correlated with efficiency of T cell activation by cytokine secretion, although direct evidence of a functional role was not obtained by knockdown experiments. Our findings indicate a link between members of the ABC protein superfamily and the BTN3A-dependent activation of γδ T cells by endogenous and exogenous pAg.
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Affiliation(s)
- David A. Rhodes
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom,*Correspondence: David A. Rhodes,
| | - Hung-Chang Chen
- Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - James C. Williamson
- Cambridge Institute for Medical Research, University of Cambridge School of Clinical Medicine, Cambridge, United Kingdom
| | - Alfred Hill
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Jack Yuan
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Sam Smith
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Harriet Rhodes
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - John Trowsdale
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Paul J. Lehner
- Cambridge Institute for Medical Research, University of Cambridge School of Clinical Medicine, Cambridge, United Kingdom
| | - Thomas Herrmann
- Institut für Virologie und Immunbiologie, Julius-Maximilians-Universität Würzburg, Würzburg, Germany
| | - Matthias Eberl
- Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, United Kingdom,Systems Immunity Research Institute, Cardiff University, Cardiff, United Kingdom
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16
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Liu C, Wang J, Hu Y, Xie H, Liu M, Tang H. Upregulation of kazrin F by miR-186 suppresses apoptosis but promotes epithelial-mesenchymal transition to contribute to malignancy in human cervical cancer cells. Chin J Cancer Res 2017; 29:45-56. [PMID: 28373753 PMCID: PMC5348475 DOI: 10.21147/j.issn.1000-9604.2017.01.06] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Objective Previous studies have identified that kazrin is a constituent of desmosome and influences intercellular adhesion, growing development and morphology. We previously cloned another new isoform, kazrin F and found that it has anti-apoptotic effects on human glioma cell line. To further explore whether kazrin F is involved in tumorigenesis, we investigated its expression and role in cervical cancer (CC) cells. Methods The role of kazrin F and miR-186 in CC was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, colony formation, transwell, and apoptosis assays. Using enhanced green fluorescent protein (EGFP) reporter assays, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and western blot analysis, we identified kazrin F post-transcriptional regulation by miR-186. Results We demonstrate that kazrin F is highly expressed in CC tissues compared with the adjacent noncancerous tissues and promotes cell proliferation, colony formation, migration and invasion in HeLa and C33A cells by suppressing apoptosis and facilitating epithelial-to-mesenchymal transition (EMT). Furthermore, miR-186 was confirmed as a regulator of kazrin F dysregulation. An EGFP reporter assay proved that miR-186 directly targets the 3’-untranslated region (3’UTR) of kazrin F and downregulates its expression, and miR-186 expression showed an inverse correlation with kazrin F levels in CC tissues. In addition, overexpression of miR-186 suppressed the malignant behaviors of CC cells. The ectopic expression of kazrin F rescued the inhibitory effects of miR-186. Conclusions Our findings indicate that the upregulation of kazrin F due to downregulated miR-186 levels contributes to malignancy, and highlight the significance of kazrin F in CC tumorigenesis.
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Affiliation(s)
- Chang Liu
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Jinghua Wang
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Yang Hu
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Hong Xie
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Min Liu
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Hua Tang
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
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17
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Wang X, Chen T, Zhao J, Peng Y, Chen X, Tu P, Zhu X, Liu Z, Wang M. Extremities of the N-terminus of envoplakin and C-terminus of its linker subdomain are major epitopes of paraneoplastic pemphigus. J Dermatol Sci 2016; 84:24-29. [DOI: 10.1016/j.jdermsci.2016.06.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/04/2016] [Accepted: 06/23/2016] [Indexed: 10/21/2022]
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18
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Affiliation(s)
- David A. Rhodes
- Department of Pathology, Immunology Division, University of Cambridge, Cambridge Institute for Medical Research, Cambridge CB2 0XY, United Kingdom; ,
| | - Walter Reith
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, CH-1211 Geneva 4, Switzerland;
| | - John Trowsdale
- Department of Pathology, Immunology Division, University of Cambridge, Cambridge Institute for Medical Research, Cambridge CB2 0XY, United Kingdom; ,
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Functional Analysis of Periplakin and Envoplakin, Cytoskeletal Linkers, and Cornified Envelope Precursor Proteins. Methods Enzymol 2015; 569:309-29. [PMID: 26778565 DOI: 10.1016/bs.mie.2015.06.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Envoplakin and periplakin are the two smallest plakin family cytoskeletal linker proteins that connect intermediate filaments to cellular junctions and other membrane locations. These two plakins have a structural role in the assembly of the cornified envelope (CE), the terminal stage of epidermal differentiation. Analysis of gene-targeted mice lacking both these plakins and the third initial CE scaffold protein, involucrin, demonstrate the importance of the structural integrity of CE for a proper epidermal barrier function. It has emerged that periplakin, which also has a wider tissue distribution than envoplakin, has additional, independent roles. Periplakin participates in the cytoskeletal organization also in other tissues and interacts with a wide range of membrane-associated proteins such as kazrin and butyrophilin BTN3A1. This review covers methods used to understand periplakin and envoplakin functions in cell culture models, including siRNA ablation of periplakin expression and the use of tagged protein domain constructs to study localization and interactions. In addition, assays that can be used to analyze CEs and epidermal barrier function in gene-targeted mice are described and discussed.
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20
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Rhodes DA, Chen HC, Price AJ, Keeble AH, Davey MS, James LC, Eberl M, Trowsdale J. Activation of human γδ T cells by cytosolic interactions of BTN3A1 with soluble phosphoantigens and the cytoskeletal adaptor periplakin. THE JOURNAL OF IMMUNOLOGY 2015; 194:2390-8. [PMID: 25637025 PMCID: PMC4337483 DOI: 10.4049/jimmunol.1401064] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The three butyrophilin BTN3A molecules, BTN3A1, BTN3A2, and BTN3A3, are members of the B7/butyrophilin-like group of Ig superfamily receptors, which modulate the function of T cells. BTN3A1 controls activation of human Vγ9/Vδ2 T cells by direct or indirect presentation of self and nonself phosphoantigens (pAg). We show that the microbial metabolite (E)-4-hydroxy-3-methyl-but-2-enyl pyrophosphate binds to the intracellular B30.2 domain of BTN3A1 with an affinity of 1.1 μM, whereas the endogenous pAg isopentenyl pyrophosphate binds with an affinity of 627 μM. Coculture experiments using knockdown cell lines showed that in addition to BTN3A1, BTN3A2 and BTN3A3 transmit activation signals to human γδ T cells in response to (E)-4-hydroxy-3-methyl-but-2-enyl pyrophosphate and the aminobisphosphonate drug zoledronate that causes intracellular accumulation of isopentenyl pyrophosphate. The plakin family member periplakin, identified in yeast two-hybrid assays, interacted with a membrane-proximal di-leucine motif, located proximal to the B30.2 domain in the BTN3A1 cytoplasmic tail. Periplakin did not interact with BTN3A2 or BTN3A3, which do not contain the di-leucine motif. Re-expression into a BTN3A1 knockdown line of wild-type BTN3A1, but not of a variant lacking the periplakin binding motif, BTN3A1Δexon5, restored γδ T cell responses, demonstrating a functional role for periplakin interaction. These data, together with the widespread expression in epithelial cells, tumor tissues, and macrophages detected using BTN3A antiserum, are consistent with complex functions for BTN3A molecules in tissue immune surveillance and infection, linking the cell cytoskeleton to γδ T cell activation by indirectly presenting pAg to the Vγ9/Vδ2 TCR.
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Affiliation(s)
- David A Rhodes
- Immunology Division, Department of Pathology, University of Cambridge, Cambridge Institute for Medical Research, Cambridge CB2 0XY, United Kingdom;
| | - Hung-Chang Chen
- Cardiff Institute of Infection & Immunity, School of Medicine, Cardiff University, Heath Park, Cardiff CF14 4XN, United Kingdom; and
| | - Amanda J Price
- Protein and Nucleic Acid Chemistry Division, Medical Research Council Laboratory of Molecular Biology, Cambridge CB2 0QH, United Kingdom
| | - Anthony H Keeble
- Protein and Nucleic Acid Chemistry Division, Medical Research Council Laboratory of Molecular Biology, Cambridge CB2 0QH, United Kingdom
| | - Martin S Davey
- Cardiff Institute of Infection & Immunity, School of Medicine, Cardiff University, Heath Park, Cardiff CF14 4XN, United Kingdom; and
| | - Leo C James
- Protein and Nucleic Acid Chemistry Division, Medical Research Council Laboratory of Molecular Biology, Cambridge CB2 0QH, United Kingdom
| | - Matthias Eberl
- Cardiff Institute of Infection & Immunity, School of Medicine, Cardiff University, Heath Park, Cardiff CF14 4XN, United Kingdom; and
| | - John Trowsdale
- Immunology Division, Department of Pathology, University of Cambridge, Cambridge Institute for Medical Research, Cambridge CB2 0XY, United Kingdom
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21
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Johnson JL, Najor NA, Green KJ. Desmosomes: regulators of cellular signaling and adhesion in epidermal health and disease. Cold Spring Harb Perspect Med 2014; 4:a015297. [PMID: 25368015 DOI: 10.1101/cshperspect.a015297] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Desmosomes are intercellular junctions that mediate cell-cell adhesion and anchor the intermediate filament network to the plasma membrane, providing mechanical resilience to tissues such as the epidermis and heart. In addition to their critical roles in adhesion, desmosomal proteins are emerging as mediators of cell signaling important for proper cell and tissue functions. In this review we highlight what is known about desmosomal proteins regulating adhesion and signaling in healthy skin-in morphogenesis, differentiation and homeostasis, wound healing, and protection against environmental damage. We also discuss how human diseases that target desmosome molecules directly or interfere indirectly with these mechanical and signaling functions to contribute to pathogenesis.
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Affiliation(s)
- Jodi L Johnson
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611 Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
| | - Nicole A Najor
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
| | - Kathleen J Green
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611 Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
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22
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Rinnerthaler M, Streubel MK, Bischof J, Richter K. Skin aging, gene expression and calcium. Exp Gerontol 2014; 68:59-65. [PMID: 25262846 DOI: 10.1016/j.exger.2014.09.015] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 09/19/2014] [Accepted: 09/22/2014] [Indexed: 02/07/2023]
Abstract
The human epidermis provides a very effective barrier function against chemical, physical and microbial insults from the environment. This is only possible as the epidermis renews itself constantly. Stem cells located at the basal lamina which forms the dermoepidermal junction provide an almost inexhaustible source of keratinocytes which differentiate and die during their journey to the surface where they are shed off as scales. Despite the continuous renewal of the epidermis it nevertheless succumbs to aging as the turnover rate of the keratinocytes is slowing down dramatically. Aging is associated with such hallmarks as thinning of the epidermis, elastosis, loss of melanocytes associated with an increased paleness and lucency of the skin and a decreased barrier function. As the differentiation of keratinocytes is strictly calcium dependent, calcium also plays an important role in the aging epidermis. Just recently it was shown that the epidermal calcium gradient in the skin that facilitates the proliferation of keratinocytes in the stratum basale and enables differentiation in the stratum granulosum is lost in the process of skin aging. In the course of this review we try to explain how this calcium gradient is built up on the one hand and is lost during aging on the other hand. How this disturbed calcium homeostasis is affecting the gene expression in aged skin and is leading to dramatic changes in the composition of the cornified envelope will also be discussed. This loss of the epidermal calcium gradient is not only specific for skin aging but can also be found in skin diseases such as Darier disease, Hailey-Hailey disease, psoriasis and atopic dermatitis, which might be very helpful to get a deeper insight in skin aging.
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Affiliation(s)
- Mark Rinnerthaler
- Department of Cell Biology, Division of Genetics, University of Salzburg, Salzburg, Austria
| | - Maria Karolin Streubel
- Department of Cell Biology, Division of Genetics, University of Salzburg, Salzburg, Austria
| | - Johannes Bischof
- Department of Cell Biology, Division of Genetics, University of Salzburg, Salzburg, Austria
| | - Klaus Richter
- Department of Cell Biology, Division of Genetics, University of Salzburg, Salzburg, Austria.
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23
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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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24
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Bouameur JE, Favre B, Borradori L. Plakins, a versatile family of cytolinkers: roles in skin integrity and in human diseases. J Invest Dermatol 2013; 134:885-894. [PMID: 24352042 DOI: 10.1038/jid.2013.498] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 10/16/2013] [Accepted: 10/25/2013] [Indexed: 11/09/2022]
Abstract
The plakin family consists of giant proteins involved in the cross-linking and organization of the cytoskeleton and adhesion complexes. They further modulate several fundamental biological processes, such as cell adhesion, migration, and polarization or signaling pathways. Inherited and acquired defects of plakins in humans and in animal models potentially lead to dramatic manifestations in the skin, striated muscles, and/or nervous system. These observations unequivocally demonstrate the key role of plakins in the maintenance of tissue integrity. Here we review the characteristics of the mammalian plakin members BPAG1 (bullous pemphigoid antigen 1), desmoplakin, plectin, envoplakin, epiplakin, MACF1 (microtubule-actin cross-linking factor 1), and periplakin, highlighting their role in skin homeostasis and diseases.
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Affiliation(s)
- Jamal-Eddine Bouameur
- Departments of Dermatology and Clinical Research, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Bertrand Favre
- Departments of Dermatology and Clinical Research, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland.
| | - Luca Borradori
- Departments of Dermatology and Clinical Research, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
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25
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Al-Jassar C, Bernadό P, Chidgey M, Overduin M. Hinged plakin domains provide specialized degrees of articulation in envoplakin, periplakin and desmoplakin. PLoS One 2013; 8:e69767. [PMID: 23922795 PMCID: PMC3726778 DOI: 10.1371/journal.pone.0069767] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 06/14/2013] [Indexed: 12/20/2022] Open
Abstract
Envoplakin, periplakin and desmoplakin are cytoskeletal proteins that provide structural integrity within the skin and heart by resisting shear forces. Here we reveal the nature of unique hinges within their plakin domains that provides divergent degrees of flexibility between rigid long and short arms composed of spectrin repeats. The range of mobility of the two arms about the hinge is revealed by applying the ensemble optimization method to small-angle X-ray scattering data. Envoplakin and periplakin adopt 'L' shaped conformations exhibiting a 'helicopter propeller'-like mobility about the hinge. By contrast desmoplakin exhibits essentially unrestricted mobility by 'jack-knifing' about the hinge. Thus the diversity of molecular jointing that can occur about plakin hinges includes 'L' shaped bends, 'U' turns and fully extended 'I' orientations between rigid blocks of spectrin repeats. This establishes specialised hinges in plakin domains as a key source of flexibility that may allow sweeping of cellular spaces during assembly of cellular structures and could impart adaptability, so preventing irreversible damage to desmosomes and the cell cytoskeleton upon exposure to mechanical stress.
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Affiliation(s)
- Caezar Al-Jassar
- School of Cancer Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Pau Bernadό
- Centre de Biochimie Structurale, CNRS UMR-5048, INSERM U-1054, Université de Montpellier I et II, Montpellier, France
| | - Martyn Chidgey
- School of Cancer Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Michael Overduin
- School of Cancer Sciences, University of Birmingham, Birmingham, United Kingdom
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26
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Rinnerthaler M, Duschl J, Steinbacher P, Salzmann M, Bischof J, Schuller M, Wimmer H, Peer T, Bauer JW, Richter K. Age-related changes in the composition of the cornified envelope in human skin. Exp Dermatol 2013; 22:329-35. [DOI: 10.1111/exd.12135] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Mark Rinnerthaler
- Department of Cell Biology; Division of Genetics; University of Salzburg; Salzburg Austria
| | - Jutta Duschl
- Department of Cell Biology; Division of Genetics; University of Salzburg; Salzburg Austria
| | - Peter Steinbacher
- Department of Organismic Biology; Division of Zoology; University of Salzburg; Salzburg Austria
| | - Manuel Salzmann
- Department of Cell Biology; Division of Genetics; University of Salzburg; Salzburg Austria
| | - Johannes Bischof
- Department of Cell Biology; Division of Genetics; University of Salzburg; Salzburg Austria
| | - Markus Schuller
- Department of Cell Biology; Division of Genetics; University of Salzburg; Salzburg Austria
| | - Herbert Wimmer
- Department of Cell Biology; Division of Genetics; University of Salzburg; Salzburg Austria
| | - Thomas Peer
- Department of Organismic Biology; Division of Zoology; University of Salzburg; Salzburg Austria
| | - Johann W. Bauer
- Department of Dermatology; Division of Molecular Dermatology and EB House Austria; Paracelsus Medical University; Salzburg Austria
| | - Klaus Richter
- Department of Cell Biology; Division of Genetics; University of Salzburg; Salzburg Austria
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27
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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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28
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Annexin A9 is a periplakin interacting partner in membrane-targeted cytoskeletal linker protein complexes. FEBS Lett 2012; 586:3090-6. [PMID: 22841549 DOI: 10.1016/j.febslet.2012.07.057] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 07/13/2012] [Accepted: 07/16/2012] [Indexed: 12/12/2022]
Abstract
Periplakin regulates keratin organisation and participates in the assembly of epidermal cornified envelopes. A proteomic approach identified annexin A9 as a novel interacting partner for periplakin N-terminus. The presence of annexin A9 in complexes with periplakin was confirmed by immunoblotting of proteins immunoprecipitated by anti-HA or anti-annexin A9 antibodies. Both endogenous and GFP-tagged annexin A9 co-localise with endogenous periplakin and transfected periplakin N-terminus at MCF-7 cell borders and aggregate after Okadaic acid treatment. Annexin A9 and periplakin co-localise in the epidermis and annexin A9 is up-regulated in differentiating keratinocytes, but the epidermal annexin A9 expression does not require periplakin.
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29
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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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30
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Abstract
Liprin-α proteins are adaptors that interact with the receptor protein tyrosine phosphatase leukocyte common antigen-related (LAR) and other synaptic proteins to promote synaptic partner selection and active zone assembly. Liprin-β proteins bind to and share homology with Liprin-α proteins, but their functions at the synapse are unknown. The Drosophila genome encodes single Liprin-α and Liprin-β homologs, as well as a third related protein that we named Liprin-γ. We show that both Liprin-β and Liprin-γ physically interact with Liprin-α and that Liprin-γ also binds to LAR. Liprin-α mutations have been shown to disrupt synaptic target layer selection by R7 photoreceptors and to reduce the size of larval neuromuscular synapses. We have generated null mutations in Liprin-β and Liprin-γ to investigate their role in these processes. We find that, although Liprin-α mutant R7 axons terminate before reaching the correct target layer, Liprin-β mutant R7 axons grow beyond their target layer. Larval neuromuscular junction size is reduced in both Liprin-α and Liprin-β mutants, and further reduced in double mutants, suggesting independent functions for these Liprins. Genetic interactions demonstrate that both Liprin proteins act through the exchange factor Trio to promote stable target selection by R7 photoreceptor axons and growth of neuromuscular synapses. Photoreceptor and neuromuscular synapses develop normally in Liprin-γ mutants; however, removing Liprin-γ improves R7 targeting in Liprin-α mutants, and restores normal neuromuscular junction size to Liprin-β mutants, suggesting that Liprin-γ counteracts the functions of the other two Liprins. We propose that context-dependent interactions between the three Liprins modulate their functions in synapse formation.
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31
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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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32
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Cho K, Vaught TG, Ji H, Gu D, Papasakelariou-Yared C, Horstmann N, Jennings JM, Lee M, Sevilla LM, Kloc M, Reynolds AB, Watt FM, Brennan RG, Kowalczyk AP, McCrea PD. Xenopus Kazrin interacts with ARVCF-catenin, spectrin and p190B RhoGAP, and modulates RhoA activity and epithelial integrity. J Cell Sci 2010; 123:4128-44. [PMID: 21062899 DOI: 10.1242/jcs.072041] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
In common with other p120-catenin subfamily members, Xenopus ARVCF (xARVCF) binds cadherin cytoplasmic domains to enhance cadherin metabolic stability or, when dissociated, modulates Rho-family GTPases. We report here that xARVCF binds and is stabilized by Xenopus KazrinA (xKazrinA), a widely expressed conserved protein that bears little homology to established protein families, and which is known to influence keratinocyte proliferation and differentiation and cytoskeletal activity. Although we found that xKazrinA binds directly to xARVCF, we did not resolve xKazrinA within a larger ternary complex with cadherin, nor did it co-precipitate with core desmosomal components. Instead, screening revealed that xKazrinA binds spectrin, suggesting a potential means by which xKazrinA localizes to cell-cell borders. This was supported by the resolution of a ternary biochemical complex of xARVCF-xKazrinA-xβ2-spectrin and, in vivo, by the finding that ectodermal shedding followed depletion of xKazrin in Xenopus embryos, a phenotype partially rescued with exogenous xARVCF. Cell shedding appeared to be the consequence of RhoA activation, and thereby altered actin organization and cadherin function. Indeed, we also revealed that xKazrinA binds p190B RhoGAP, which was likewise capable of rescuing Kazrin depletion. Finally, xKazrinA was found to associate with δ-catenins and p0071-catenins but not with p120-catenin, suggesting that Kazrin interacts selectively with additional members of the p120-catenin subfamily. Taken together, our study supports the essential role of Kazrin in development, and reveals the biochemical and functional association of KazrinA with ARVCF-catenin, spectrin and p190B RhoGAP.
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Affiliation(s)
- Kyucheol Cho
- Department of Biochemistry and Molecular Biology, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
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33
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Affiliation(s)
- Pierre D McCrea
- Department of Biochemistry and Molecular Biology, University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA.
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34
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Nachat R, Cipolat S, Sevilla LM, Chhatriwala M, Groot KR, Watt FM. KazrinE is a desmosome-associated liprin that colocalises with acetylated microtubules. J Cell Sci 2009; 122:4035-41. [PMID: 19843585 PMCID: PMC2776498 DOI: 10.1242/jcs.047266] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/02/2009] [Indexed: 11/20/2022] Open
Abstract
Kazrin is a widely expressed, evolutionarily conserved cytoplasmic protein that binds the cytolinker protein periplakin. Multiple functions of kazrin have been reported, including regulation of desmosome assembly, embryonic tissue morphogenesis and epidermal differentiation. Here, we identify kazrinE as a kazrin isoform that contains a liprin-homology domain (LHD) and forms complexes with kazrinA, kazrinB and kazrinC. As predicted from the presence of the LHD, kazrinE can associate with the leukocyte common antigen-related (LAR) protein tyrosine phosphatase in a phosphorylation-dependent manner. When overexpressed in epidermal keratinocytes, kazrinE induces changes in cell shape and stimulates terminal differentiation. Like the other kazrin isoforms, kazrinE localises to the nucleus and desmosomes. However, in addition, kazrinE associates with stabilised microtubules via its LHD. During terminal differentiation, the keratinocyte microtubule network undergoes extensive reorganisation; in differentiating keratinocytes, endogenous kazrinE colocalises with microtubules, but periplakin does not. We speculate that the kazrinE-microtubule interaction contributes to the mechanism by which kazrin regulates desmosome formation and epidermal differentiation.
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Affiliation(s)
- Rachida Nachat
- Cancer Research UK Cambridge Research Institute, Li Ka Shing Centre, Robinson
Way, Cambridge, CB2 0RE, UK
| | - Sara Cipolat
- Cancer Research UK Cambridge Research Institute, Li Ka Shing Centre, Robinson
Way, Cambridge, CB2 0RE, UK
| | - Lisa M. Sevilla
- Cancer Research UK Cambridge Research Institute, Li Ka Shing Centre, Robinson
Way, Cambridge, CB2 0RE, UK
- Wellcome Trust Centre for Stem Cell Research, Tennis Court Road, Cambridge CB2
1QR, UK
| | - Mariya Chhatriwala
- Wellcome Trust Centre for Stem Cell Research, Tennis Court Road, Cambridge CB2
1QR, UK
| | - Karen R. Groot
- National Cancer Research Institute, 61 Lincoln's Inn Fields, PO Box 123,
London, WC2A 3PX, UK
| | - Fiona M. Watt
- Cancer Research UK Cambridge Research Institute, Li Ka Shing Centre, Robinson
Way, Cambridge, CB2 0RE, UK
- Wellcome Trust Centre for Stem Cell Research, Tennis Court Road, Cambridge CB2
1QR, UK
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35
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Wang Q, Liu M, Li X, Chen L, Tang H. Kazrin F is involved in apoptosis and interacts with BAX and ARC. Acta Biochim Biophys Sin (Shanghai) 2009; 41:763-72. [PMID: 19727525 DOI: 10.1093/abbs/gmp065] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Kazrin has recently been identified as a functional protein that is involved in cell-cell junctions and in signal transduction. Here, we identified a new isoform, Kazrin F, which is 518 aa in length and has 97 aa unique at the N-terminus. Knockdown of Kazrin F using siRNA caused cell apoptosis and a marked decrease in cell viability measured by MTT and TUNEL assays. Co-immunoprecipitation analysis revealed that Kazrin F interacts with ARC (apoptosis repressor with caspase recruitment domain) and Bax (Bcl-2-associated X protein). Co-localization of Kazrin F with ARC and Bax in the cytoplasm was determined by immunofluorescence analysis. These results suggested that Kazrin F might play an important role in regulating cellular apoptosis by interacting with ARC and Bax.
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Affiliation(s)
- Qiong Wang
- Tianjin Life Science Research Center, Tianjin Medical University, Tianjin 300070, China
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36
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Lens intermediate filaments. Exp Eye Res 2008; 88:165-72. [PMID: 19071112 DOI: 10.1016/j.exer.2008.11.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2008] [Revised: 11/04/2008] [Accepted: 11/04/2008] [Indexed: 12/12/2022]
Abstract
The ocular lens assembles two separate intermediate filament systems sequentially with differentiation. Canonical 8-11 nm IFs composed of Vimentin are assembled in lens epithelial cells and younger fiber cells, while the fiber cell-specific beaded filaments are switched on as fiber cell elongation initiates. Some of the key features of both filament systems are reviewed.
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37
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Yoon KH, FitzGerald PG. Periplakin interactions with lens intermediate and beaded filaments. Invest Ophthalmol Vis Sci 2008; 50:1283-9. [PMID: 19029034 DOI: 10.1167/iovs.08-2894] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
PURPOSE The lens assembles two systems of intermediated filaments-vimentin intermediate filament (IF) and highly divergent, lens-specific beaded filament (BF)-sequentially as epithelial cells differentiate into fiber cells. The goal of this study was to identify linker proteins that integrate the different lens IF into the biology of the lens fiber cells. METHODS Antibodies to periplakin were used in coimmunoprecipitation studies to identify proteins that complex with BF and IF in detergent extracts of mouse lens. GST-periplakin fusion proteins were used to confirm coimmunoprecipitation RESULTS Yeast two-hybrid analysis was used to establish direct linkage between periplakin and BF/IF proteins and to narrow down binding domains. Immunocytochemistry was used to establish spatial and temporal coexpression of periplakin and BF/IF. results. Periplakin is found complexed to BF and IF in the lens. The COOH terminus of periplakin was shown to have a strong affinity for the CP49 rod 2 domain but not its head or rod 1 domains. Low-level affinity was seen between the filensin rod domain and periplakin. Periplakin localization in lens overlapped with BF and IF. CONCLUSIONS Despite divergence in primary sequence, predicted secondary structure, and filament structure, CP49 has conserved the capacity to bind a common IF linker protein, periplakin, and shares that binding capacity with the other major lens IF protein, vimentin. This suggests that mutations in periplakin have the potential to emulate the cataract seen in lenses with defective BF proteins.
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Affiliation(s)
- Kyoung-hye Yoon
- Department of Cell Biology and Human Anatomy, School of Medicine, University of California, Davis, California, USA
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Sevilla LM, Nachat R, Groot KR, Watt FM. Kazrin regulates keratinocyte cytoskeletal networks, intercellular junctions and differentiation. J Cell Sci 2008; 121:3561-9. [PMID: 18840647 DOI: 10.1242/jcs.029538] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Kazrin is an evolutionarily conserved protein that is upregulated during keratinocyte terminal differentiation. Kazrin localizes to desmosomes and binds the epidermal cornified envelope protein periplakin. Kazrin overexpression in human epidermal keratinocytes caused profound changes in cell shape, reduced filamentous actin, reorganized keratin filaments, and impaired assembly of intercellular junctions. These effects were attributable to decreased Rho activity in kazrin-overexpressing cells. Kazrin overexpression also stimulated terminal differentiation and reduced clonal growth in culture. Knockdown of kazrin decreased expression of differentiation markers and stimulated proliferation without changing total Rho activity. We conclude that kazrin is a dual regulator of intercellular adhesion and differentiation in keratinocytes and regulates these processes by Rho-dependent and -independent mechanisms.
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Affiliation(s)
- Lisa M Sevilla
- Epithelial Cell Biology Laboratory, Cancer Research UK Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK
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Charles CA, Tomic-Canic M, Vincek V, Nassiri M, Stojadinovic O, Eaglstein WH, Kirsner RS. A gene signature of nonhealing venous ulcers: potential diagnostic markers. J Am Acad Dermatol 2008; 59:758-71. [PMID: 18718692 DOI: 10.1016/j.jaad.2008.07.018] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Revised: 06/17/2008] [Accepted: 07/10/2008] [Indexed: 12/22/2022]
Abstract
BACKGROUND Venous leg ulcers are responsible for more than half of all lower extremity ulcerations. Significant interest has been focused on understanding the physiologic basis on which patients fail to heal with standard therapy. OBJECTIVE This study uses complementary DNA microarray analysis of tissue samples from healing and nonhealing venous leg ulcers to identify the genetic expression profiles from these dichotomous populations. METHODS Ulcer size and chronicity, factors that have been identified as prognostic indicators for healing, were used to distribute venous leg ulcers as healing versus nonhealing. Punch biopsy samples were obtained from the wound edge and wound bed of all venous leg ulcers. The top 15 genes with differential expression greater than 2-fold between the two populations of wounds (P < .05) were reported. RESULTS Significant differences were demonstrated in the expression of a diverse collection of genes, with particular differences demonstrated by genes coding for structural epidermal proteins, genes associated with hyperproliferation and tissue injury, and transcription factors. LIMITATIONS Small sample size may mitigate potential clinical implications of findings. CONCLUSIONS The genetic expression profiles displayed here may have implications for the development of novel therapies for chronic venous leg ulcers, and may also serve as prognostic indicators for wound healing.
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Affiliation(s)
- Carlos A Charles
- Department of Dermatology, University of Miami Miller School of Medicine, Miami, Florida 33136, USA
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Sevilla LM, Rana AA, Watt FM, Smith JC. KazrinA is required for axial elongation and epidermal integrity inXenopus tropicalis. Dev Dyn 2008; 237:1718-25. [DOI: 10.1002/dvdy.21557] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Sevilla LM, Nachat R, Groot KR, Klement JF, Uitto J, Djian P, Määttä A, Watt FM. Mice deficient in involucrin, envoplakin, and periplakin have a defective epidermal barrier. ACTA ACUST UNITED AC 2008; 179:1599-612. [PMID: 18166659 PMCID: PMC2373502 DOI: 10.1083/jcb.200706187] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The cornified envelope is assembled from transglutaminase cross-linked proteins and lipids in the outermost epidermal layers and is essential for skin barrier function. Involucrin, envoplakin, and periplakin form the protein scaffold on which the envelope assembles. To examine their combined function, we generated mice deficient in all three genes. The triple knockouts have delayed embryonic barrier formation and postnatal hyperkeratosis (abnormal accumulation of cornified cells) resulting from impaired desquamation. Cornified envelopes form but are ultrastructurally abnormal, with reduced lipid content and decreased mechanical integrity. Expression of proteases is reduced and the protease inhibitor, serpina1b, is highly upregulated, resulting in defective filaggrin processing and delayed degradation of desmoglein 1 and corneodesmosin. There is infiltration of CD4+ T cells and a reduction in resident γδ+ T cells, reminiscent of atopic dermatitis. Thus, combined loss of the cornified envelope proteins not only impairs the epidermal barrier, but also changes the composition of T cell subpopulations in the skin.
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Affiliation(s)
- Lisa M Sevilla
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing Centre, Cambridge CB2 0RE, England, UK
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Abstract
Desmosomes are highly specialized anchoring junctions that link intermediate filaments to sites of intercellular adhesion, thus facilitating the formation of a supracellular scaffolding that distributes mechanical forces throughout a tissue. These junctions are thus particularly important for maintaining the integrity of tissues that endure physical stress, such as the epidermis and myocardium. The importance of the classic mechanical functions of desmosomal constituents is underscored by pathologies reported in animal models and an ever-expanding list of human mutations that target both desmosomal cadherins and their associated cytoskeletal anchoring proteins. However, the notion that desmosomes are static structures that exist simply to glue cells together belies their susceptibility to remodeling in response to environmental cues and their important tissue-specific roles in cell behavior and signaling. Here, we review the molecular blueprint of the desmosome and models for assembling its protein components to form an adhesive interface and the desmosomal plaque. We also discuss emerging evidence of supra-adhesive roles for desmosomal proteins in regulating tissue morphogenesis and homeostasis. Finally, we highlight the dynamic nature of these adhesive organelles, examining mechanisms in health and disease for modulating adhesive strength and stability of desmosomes.
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Affiliation(s)
- Kathleen J Green
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, USA.
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Estrach S, Legg J, Watt FM. Syntenin mediates Delta1-induced cohesiveness of epidermal stem cells in culture. J Cell Sci 2007; 120:2944-52. [PMID: 17666427 PMCID: PMC2001279 DOI: 10.1242/jcs.016253] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
In human interfollicular epidermis, stem cell clusters express high levels of the Notch ligand Delta1. Delta1 stimulates neighbouring cells to differentiate and also promotes stem cell clustering. Although Notch signalling is known to stimulate epidermal differentiation, little is known about the mechanism by which Delta1 promotes epidermal cell cohesiveness. This is an important issue, because the location of stem cells determines the local microenvironmental signals they receive. We now show that mutation of the Delta1 PDZ-binding domain abolishes Delta1-mediated keratinocyte cohesiveness, stimulates Notch transcriptional activity and promotes epidermal differentiation. A yeast two-hybrid screen revealed that Delta1 binds to the adaptor protein syntenin - an interaction dependent on the Delta1 PDZ-binding domain. Syntenin, like Delta1, is upregulated in the stem cell clusters of human interfollicular epidermis. Knockdown of syntenin in cells overexpressing full-length Delta1 had the same effects on Notch signalling, epidermal differentiation and adhesion as overexpressing Delta1 with a mutated PDZ-binding domain. Syntenin has previously been reported to regulate membrane traffic, and mutation of the Delta1 PDZ-binding domain or knockdown of syntenin led to rapid internalisation of Delta1. We propose that syntenin binding to Delta1 plays a dual role in promoting intercellular adhesion and regulating Notch signalling.
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Affiliation(s)
- Soline Estrach
- Wellcome Trust Centre for Stem Cell Research, Tennis Court Road, Cambridge, CB2 1QT
| | - James Legg
- Cambridge Antibody Technology, Milstein Building, Granta Park, Cambridge, CB1 6GH
| | - Fiona M. Watt
- Wellcome Trust Centre for Stem Cell Research, Tennis Court Road, Cambridge, CB2 1QT
- CR-UK Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE
- Corresponding author, Telephone: +44 1223 404400, Fax: +44 1223 404199, e-mail:
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Boczonadi V, McInroy L, Määttä A. Cytolinker cross-talk: periplakin N-terminus interacts with plectin to regulate keratin organisation and epithelial migration. Exp Cell Res 2007; 313:3579-91. [PMID: 17662978 DOI: 10.1016/j.yexcr.2007.07.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2007] [Revised: 07/06/2007] [Accepted: 07/07/2007] [Indexed: 02/02/2023]
Abstract
Periplakin is a cytoskeletal linker protein that participates in the assembly of epidermal cell cornified envelope and regulates keratin organisation in simple epithelial cells. We have generated a stably transfected MCF-7 subclone expressing HA-tagged periplakin N-terminus to identify molecular interactions of periplakin. Co-immunoprecipitation with anti-HA antibodies and mass spectrometry identified a 500-kDa periplakin-interacting protein as plectin, another plakin family member. Plectin-periplakin interaction was confirmed by immunoblotting of complexes immunoprecipitated by either anti-HA or anti-plectin antibodies. Transient transfections of periplakin deletion constructs indicated that first 133 amino acid residues of the N-terminus are sufficient for co-localisation with plectin at MCF-7 cell borders. Immunofluorescence analysis demonstrated that periplakin and plectin isoforms 1, 1f and 1k co-localise at cell borders of MCF-7 epithelia and that plectin-1f and 1k co-localise with periplakin in suprabasal epidermis. Ablation of plectin by siRNA in HaCaT keratinocytes resulted in aggregation of periplakin to small clusters. Scratch-wounded MCF-7 epithelia expressing periplakin N-terminus showed accelerated keratin re-organisation that was inhibited by siRNA knock-down of plectin. Finally, ablation of either periplakin or plectin, or both proteins simultaneously, impaired migration of MCF-7 epithelial sheets. Thus, we have identified a novel functional co-localisation between two plakin cytolinker proteins.
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Affiliation(s)
- Veronika Boczonadi
- Centre for Stem Cell Research and Regenerative Medicine, School of Biological and Biomedical Sciences, University of Durham, DH1 3LE, Durham, UK
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Sonnenberg A, Liem RKH. Plakins in development and disease. Exp Cell Res 2007; 313:2189-203. [PMID: 17499243 DOI: 10.1016/j.yexcr.2007.03.039] [Citation(s) in RCA: 228] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2007] [Revised: 03/01/2007] [Accepted: 03/06/2007] [Indexed: 11/22/2022]
Abstract
Plakins are large multi-domain molecules that have various functions to link cytoskeletal elements together and to connect them to junctional complexes. Plakins were first identified in epithelial cells where they were found to connect the intermediate filaments to desmosomes and hemidesmosomes [Ruhrberg, C., and Watt, F.M. (1997). The plakin family: versatile organizers of cytoskeletal architecture. Curr Opin Genet Dev 7, 392-397.]. They were subsequently found to be important for the integrity of muscle cells. Most recently, they have been found in the nervous system, where their functions appear to be more complex, including cross-linking of microtubules (MTs) and actin filaments [Leung, C.L., Zheng, M., Prater, S.M., and Liem, R.K. (2001). The BPAG1 locus: Alternative splicing produces multiple isoforms with distinct cytoskeletal linker domains, including predominant isoforms in neurons and muscles. J Cell Biol 154, 691-697., Leung, C.L., Sun, D., Zheng, M., Knowles, D.R., and Liem, R.K. (1999). Microtubule actin cross-linking factor (MACF): a hybrid of dystonin and dystrophin that can interact with the actin and microtubule cytoskeletons. J Cell Biol 147, 1275-1286.]. These plakins have also indicated their relationship to the spectrin superfamily of proteins and the plakins appear to be evolutionarily related to the spectrins, but have diverged to perform different specialized functions. In invertebrates, a single plakin is present in both Drosophila melanogaster and Caenorhabditis elegans, which resemble the more complex plakins found in mammals [Roper, K., Gregory, S.L., and Brown, N.H. (2002). The 'spectraplakins': cytoskeletal giants with characteristics of both spectrin and plakin families. J Cell Sci 115, 4215-4225.]. In contrast, there are seven plakins found in mammals and most of them have alternatively spliced forms leading to a very complex group of proteins with potential tissue specific functions [Jefferson, J.J., Leung, C.L., and Liem, R.K. (2004). Plakins: goliaths that link cell junctions and the cytoskeleton. Nat Rev Mol Cell Biol 5, 542-553.]. In this review, we will first describe the plakins, desmoplakin, plectin, envoplakin and periplakin and then describe two other mammalian plakins, Bullous pemphigoid antigen 1 (BPAG1) and microtubule actin cross-linking factor 1 (MACF1), that are expressed in multiple isoforms in different tissues. We will also describe the relationship of these two proteins to the invertebrate plakins, shortstop (shot) in Drosophila and VAB-10 in C. elegans. Finally, we will describe an unusual mammalian plakin, called epiplakin.
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Affiliation(s)
- Arnoud Sonnenberg
- Division of Cell Biology, The Netherlands Cancer Inst., Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands.
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46
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Long HA, Boczonadi V, McInroy L, Goldberg M, Määttä A. Periplakin-dependent re-organisation of keratin cytoskeleton and loss of collective migration in keratin-8-downregulated epithelial sheets. J Cell Sci 2006; 119:5147-59. [PMID: 17158917 DOI: 10.1242/jcs.03304] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Collective migration of epithelial sheets requires maintenance of cell-cell junctions and co-ordination of the movement of the migrating front. We have investigated the role of keratin intermediate filaments and periplakin, a cytoskeletal linker protein, in the migration of simple epithelial cells. Scratch wounding induces bundling of keratins into a cable of tightly packed filaments adjacent to the free wound edge. Keratin re-organisation is preceded by a re-distribution of periplakin away from the free wound edge. Periplakin participates with dynamic changes in the keratin cytoskeleton via its C-terminal linker domain that co-localises with okadaic-acid-treated keratin granules. Stable expression of the periplakin C-terminal domain increases keratin bundling and Ser431 keratin phosphorylation at wound edge resulting in a delay in wound closure. Ablation of periplakin by siRNA inhibits keratin cable formation and impairs wound closure. Knockdown of keratin 8 with siRNA results in (1) a loss of desmoplakin localisation at cell borders, (2) a failure of MCF-7 epithelial sheets to migrate as a collective unit and (3) accelerated wound closure in vimentin-positive HeLa and Panc-1 cell lines. Thus, keratin 8 is required for the maintenance of epithelial integrity during migration and periplakin participates in the re-organisation of keratins in migrating cells.
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Affiliation(s)
- Heather A Long
- Centre for Stem Cell Research and Regenerative Medicine, School of Biological and Biomedical Sciences, University of Durham, Durham, DH1 3LE, UK
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47
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McCrea PD, Park JI. Developmental functions of the P120-catenin sub-family. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2006; 1773:17-33. [PMID: 16942809 DOI: 10.1016/j.bbamcr.2006.06.009] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2006] [Revised: 06/21/2006] [Accepted: 06/26/2006] [Indexed: 01/11/2023]
Abstract
For more than a decade, cell, developmental and cancer investigators have brought about a wide interest in the biology of catenin proteins, an attraction being their varied functions within differing cellular compartments. While the diversity of catenin localizations and roles has been intriguing, it has also posed a challenge to the clear interpretation of loss- or gain-of-function developmental phenotypes. The most deeply studied member of the larger catenin family is beta-catenin, whose contributions span areas including cell adhesion and intracellular signaling/ transcriptional control. More recently, attention has been directed towards p120-catenin, which in conjunction with the p120-catenin sub-family members ARVCF- and delta-catenins, are the subjects of this review. Although the requirement for vertebrate versus invertebrate p120-catenin are at variance, vertebrate p120-catenin sub-family members may each inter-link cadherin, cytoskeletal and gene regulatory functions in embryogenesis and disease.
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Affiliation(s)
- Pierre D McCrea
- Department of Biochemistry and Molecular Biology, Program in Genes and Development, University of Texas MD Anderson Cancer Center, University of Texas Graduate School of Biomedical Science, Houston TX 77030, USA.
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Gallicano GI, Foshay K, Pengetnze Y, Zhou X. Dynamics and unexpected localization of the plakin binding protein, kazrin, in mouse eggs and early embryos. Dev Dyn 2005; 234:201-14. [PMID: 16086310 DOI: 10.1002/dvdy.20519] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The cell uses the cytoskeleton in virtually every aspect of cell survival and function. One primary function of the cytoskeleton is to connect to and stabilize intercellular junctions. To accomplish this task, microtubules, actin filaments, and intermediate filaments utilize cytolinker proteins, which physically bind the cytoskeletal filament to the core proteins of the adhesion junction. The plakin family of linker proteins have been in the spotlight recently as critical components for embryo survival and, when mutated, the cause of diseases such as muscular dystrophy and cardiomyopathies. Here, we reveal the dynamics of a recently discovered plakin binding protein, kazrin (kaz), during early mouse development. Kaz was originally found in adult tissues, primarily epidermis, linking periplakin to the plasma membrane and colocalizing with desmoplakin in desmosomes. Using reverse transcriptase-polymerase chain reaction, Western blots, and confocal microscopy, we found kaz in unfertilized eggs associated with the spindle apparatus and cytoskeletal sheets. As quickly as 5 min after egg activation, kaz relocates to a diffuse peri-spindle position, followed 20-30 min later by clear localization to the presumptive cytokinetic ring. Before the blastocyst stage of development, kaz associates with the nuclear matrix in a cell cycle-dependent manner, and also associates with the cytoplasmic actin cytoskeleton. After blastocyst formation, kaz localization and potential function(s) become highly complex as it is found associating with cell-cell junctions, the cytoskeleton, and nucleus. Postimplantation stages of development reveal that kaz retains a multifunctional, tissue-specific role as it is detected at diverse locations in various embryonic tissue types.
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Affiliation(s)
- G Ian Gallicano
- Department of Cell Biology, Georgetown University Medical Center, Washington, DC 20007, USA.
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Green KJ, Böhringer M, Gocken T, Jones JCR. Intermediate filament associated proteins. ADVANCES IN PROTEIN CHEMISTRY 2005; 70:143-202. [PMID: 15837516 DOI: 10.1016/s0065-3233(05)70006-1] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Intermediate filament associated proteins (IFAPs) coordinate interactions between intermediate filaments (IFs) and other cytoskeletal elements and organelles, including membrane-associated junctions such as desmosomes and hemidesmosomes in epithelial cells, costameres in striated muscle, and intercalated discs in cardiac muscle. IFAPs thus serve as critical connecting links in the IF scaffolding that organizes the cytoplasm and confers mechanical stability to cells and tissues. However, in recent years it has become apparent that IFAPs are not limited to structural crosslinkers and bundlers but also include chaperones, enzymes, adapters, and receptors. IF networks can therefore be considered scaffolding upon which associated proteins are organized and regulated to control metabolic activities and maintain cell homeostasis.
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Affiliation(s)
- Kathleen J Green
- Departments of Pathology and Dermatology and R.H. Lurie Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
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