1
|
Zielinski N, Baiceanu D, Dragomir A, Heyckendorf J, Ibraim E, Köhler N, Leschczyk C, Popa C, Rachow A, Sachsenweger J, Sanchez Carballo P, Schaub D, Zeeb H, Tulu B, DiNardo AR, Lange C, Reimann M. A Transcriptomic Biomarker Predicting Linezolid-Associated Neuropathy During Treatment of Drug-Resistant Tuberculosis. Pathog Immun 2024; 9:25-42. [PMID: 38939039 PMCID: PMC11210591 DOI: 10.20411/pai.v9i2.705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 05/28/2024] [Indexed: 06/29/2024] Open
Abstract
Background Neuropathic adverse events occur frequently in linezolid-containing regimens, some of which remain irreversible after drug discontinuation. Objective We aimed to identify and validate a host RNA-based biomarker that can predict linezolid-associated neuropathy before multidrug-resistant/rifampicin-resistant tuberculosis (MDR/RR-TB) treatment initiation and to identify genes and pathways that are associated with linezolid-associated neuropathy. Methods Adult patients initiating MDR/RR-TB treatment including linezolid were prospectively enrolled in 3 independent cohorts in Germany. Clinical data and whole blood RNA for transcriptomic analysis were collected. The primary outcome was linezolid-associated optic and/or peripheral neuropathy. A random forest algorithm was used for biomarker identification. The biomarker was validated in an additional fourth cohort of patients with MDR/RR-TB from Romania. Results A total of 52 patients from the 3 identification cohorts received linezolid treatment. Of those, 24 (46.2%) developed peripheral and/or optic neuropathies during linezolid treatment. The majority (59.3%) of the episodes were of moderate (grade 2) severity. In total, the expression of 1,479 genes differed significantly at baseline of treatment. Suprabasin (SBSN) was identified as a potential biomarker to predict linezolid-associated neuropathy. In the validation cohort, 10 of 42 (23.8%) patients developed grade ≥3 neuropathies. The area under the curve for the biomarker algorithm prediction of grade ≥3 neuropathies was 0.63 (poor; 95% confidence interval: 0.42 - 0.84). Conclusions We identified and preliminarily validated a potential clinical biomarker to predict linezolid-associated neuropathies before the initiation of MDR/RR-TB therapy. Larger studies of the SBSN biomarker in more diverse populations are warranted.
Collapse
Affiliation(s)
- Nika Zielinski
- Division of Clinical Infectious Diseases, Research
Center Borstel, Borstel, Germany
- German Center for Infection Research (DZIF) Partner
Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
- Respiratory Medicine and International Health,
University of Lübeck, Lübeck, Germany
| | - Dragos Baiceanu
- Marius Nasta Institute of Pneumophtiziology (MNI),
Bucharest, Romania
- Eastern-European Study Site of DZIF in MNI,
Bucharest, Romania
| | - Antonela Dragomir
- Marius Nasta Institute of Pneumophtiziology (MNI),
Bucharest, Romania
- Eastern-European Study Site of DZIF in MNI,
Bucharest, Romania
- UMF Carol Davila, Bucharest, Romania
| | - Jan Heyckendorf
- Clinic for Internal Medicine I, Leibniz Lung Clinic,
University Hospital Schleswig-Holstein (UKSH) Campus Kiel, Kiel, Germany
| | - Elmira Ibraim
- Marius Nasta Institute of Pneumophtiziology (MNI),
Bucharest, Romania
- Eastern-European Study Site of DZIF in MNI,
Bucharest, Romania
| | - Niklas Köhler
- Division of Clinical Infectious Diseases, Research
Center Borstel, Borstel, Germany
- German Center for Infection Research (DZIF) Partner
Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
- Respiratory Medicine and International Health,
University of Lübeck, Lübeck, Germany
| | - Christoph Leschczyk
- German Center for Infection Research (DZIF) Partner
Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
- Division of Cellular Microbiology, Research Center
Borstel, Borstel, Germany
| | - Cristina Popa
- Marius Nasta Institute of Pneumophtiziology (MNI),
Bucharest, Romania
- Eastern-European Study Site of DZIF in MNI,
Bucharest, Romania
| | - Andrea Rachow
- Division of Infectious Diseases and Tropical
Medicine, Medical Centre of the University of Munich (LMU), Munich,
Germany
- German Centre for Infection Research (DZIF),
Partner Site Munich, Munich, Germany
- Unit Global Health, Helmholtz Zentrum
München, German Research Centre for Environmental Health (HMGU),
Neuherberg, Germany
| | - Jens Sachsenweger
- Department of Pneumology, Asklepios Clinic
Hamburg-Harburg, Hamburg, Germany
| | - Patricia Sanchez Carballo
- Division of Clinical Infectious Diseases, Research
Center Borstel, Borstel, Germany
- German Center for Infection Research (DZIF) Partner
Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
- Respiratory Medicine and International Health,
University of Lübeck, Lübeck, Germany
| | - Dagmar Schaub
- Division of Clinical Infectious Diseases, Research
Center Borstel, Borstel, Germany
- German Center for Infection Research (DZIF) Partner
Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
- Respiratory Medicine and International Health,
University of Lübeck, Lübeck, Germany
| | - Hajo Zeeb
- Department of Prevention and Evaluation, Leibniz
Institute for Prevention Research and Epidemiology – BIPS, Bremen,
Germany
- Faculty of Human and Health Sciences, University
of Bremen, Bremen, Germany
| | - Begna Tulu
- Division of Clinical Infectious Diseases, Research
Center Borstel, Borstel, Germany
- German Center for Infection Research (DZIF) Partner
Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
- Respiratory Medicine and International Health,
University of Lübeck, Lübeck, Germany
| | - Andrew R. DiNardo
- Baylor College of Medicine and Texas
Children's Hospital, Global TB Program, Houston, Texas
- Radboud University Medical Center, Internal
Medicine, Nijmegen, Netherlands
| | - Christoph Lange
- Division of Clinical Infectious Diseases, Research
Center Borstel, Borstel, Germany
- German Center for Infection Research (DZIF) Partner
Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
- Respiratory Medicine and International Health,
University of Lübeck, Lübeck, Germany
- Baylor College of Medicine and Texas
Children's Hospital, Global TB Program, Houston, Texas
| | - Maja Reimann
- Division of Clinical Infectious Diseases, Research
Center Borstel, Borstel, Germany
- German Center for Infection Research (DZIF) Partner
Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
- Respiratory Medicine and International Health,
University of Lübeck, Lübeck, Germany
| |
Collapse
|
2
|
Mesdaghi S, Price RM, Madine J, Rigden DJ. Deep Learning-based structure modelling illuminates structure and function in uncharted regions of β-solenoid fold space. J Struct Biol 2023; 215:108010. [PMID: 37544372 DOI: 10.1016/j.jsb.2023.108010] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/19/2023] [Accepted: 08/03/2023] [Indexed: 08/08/2023]
Abstract
Repeat proteins are common in all domains of life and exhibit a wide range of functions. One class of repeat protein contains solenoid folds where the repeating unit consists of β-strands separated by tight turns. β-solenoids have distinguishing structural features such as handedness, twist, oligomerisation state, coil shape and size which give rise to their diversity. Characterised β-solenoid repeat proteins are known to form regions in bacterial and viral virulence factors, antifreeze proteins and functional amyloids. For many of these proteins, the experimental structure has not been solved, as they are difficult to crystallise or model. Here we use various deep learning-based structure-modelling methods to discover novel predicted β-solenoids, perform structural database searches to mine further structural neighbours and relate their predicted structure to possible functions. We find both eukaryotic and prokaryotic adhesins, confirming a known functional linkage between adhesin function and the β-solenoid fold. We further identify exceptionally long, flat β-solenoid folds as possible structures of mucin tandem repeat regions and unprecedentedly small β-solenoid structures. Additionally, we characterise a novel β-solenoid coil shape, the FapC Greek key β-solenoid as well as plausible complexes between it and other proteins involved in Pseudomonas functional amyloid fibres.
Collapse
Affiliation(s)
- Shahram Mesdaghi
- The University of Liverpool, Institute of Systems, Molecular & Integrative Biology, Biosciences Building, Crown Street, Liverpool L69 7ZB, United Kingdom; Computational Biology Facility, MerseyBio, University of Liverpool, Crown Street, Liverpool L69 7ZB, United Kingdom
| | - Rebecca M Price
- The University of Liverpool, Institute of Systems, Molecular & Integrative Biology, Biosciences Building, Crown Street, Liverpool L69 7ZB, United Kingdom
| | - Jillian Madine
- The University of Liverpool, Institute of Systems, Molecular & Integrative Biology, Biosciences Building, Crown Street, Liverpool L69 7ZB, United Kingdom.
| | - Daniel J Rigden
- The University of Liverpool, Institute of Systems, Molecular & Integrative Biology, Biosciences Building, Crown Street, Liverpool L69 7ZB, United Kingdom.
| |
Collapse
|
3
|
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.
Collapse
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
| |
Collapse
|
4
|
Houri A, Mukudai Y, Abe Y, Watanabe M, Nara M, Miyamoto S, Kurihara M, Shimane T, Shirota T. Suprabasin enhances the invasion, migration, and angiogenic ability of oral squamous cell carcinoma cells under hypoxic conditions. Oncol Rep 2023; 49:83. [PMID: 36896786 PMCID: PMC10035061 DOI: 10.3892/or.2023.8520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 01/09/2023] [Indexed: 03/10/2023] Open
Abstract
Suprabasin (SBSN) is a secreted protein that is isolated as a novel gene expressed in differentiated keratinocytes in mice and humans. It induces various cellular processes such as proliferation, invasion, metastasis, migration, angiogenesis, apoptosis, therapy and immune resistance. The role of SBSN was investigated in oral squamous cell carcinoma (OSCC) under hypoxic conditions using the SAS, HSC‑3, and HSC‑4 cell lines. Hypoxia induced SBSN mRNA and protein expression in OSCC cells and normal human epidermal keratinocytes (NHEKs), and this was most prominent in SAS cells. The function of SBSN in SAS cells was analyzed using 3‑(4,5‑dimethylthiazol‑2‑yl)‑2,5‑diphenyltetrazolium bromide (MTT); 5‑bromo‑2'‑deoxyuridine (BrdU); cell cycle, caspase 3/7, invasion, migration, and tube formation assays; and gelatin zymography. Overexpression of SBSN decreased MTT activity, but the results of BrdU and cell cycle assays indicated upregulation of cell proliferation. Western blot analysis for cyclin‑related proteins indicated involvement of cyclin pathways. However, SBSN did not strongly suppress apoptosis and autophagy, as revealed by caspase 3/7 assay and western blotting for p62 and LC3. Additionally, SBSN increased cell invasion more under hypoxia than under normoxia, and this resulted from increased cell migration, not from matrix metalloprotease activity or epithelial‑mesenchymal transition. Furthermore, SBSN induced angiogenesis more strongly under hypoxia than under normoxia. Analysis using reverse transcription‑quantitative PCR showed that vascular endothelial growth factor (VEGF) mRNA was not altered by the knockdown or overexpression of SBSN VEGF, suggesting that VEGF is not located downstream of SBSN. These results demonstrated the importance of SBSN in the maintenance of survival and proliferation, invasion and angiogenesis of OSCC cells under hypoxia.
Collapse
Affiliation(s)
- Asami Houri
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Ota‑ku, Tokyo 145‑8515, Japan
| | - Yoshiki Mukudai
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Ota‑ku, Tokyo 145‑8515, Japan
| | - Yuzo Abe
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Ota‑ku, Tokyo 145‑8515, Japan
| | - Masataka Watanabe
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Ota‑ku, Tokyo 145‑8515, Japan
| | - Maki Nara
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Ota‑ku, Tokyo 145‑8515, Japan
| | - Saya Miyamoto
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Ota‑ku, Tokyo 145‑8515, Japan
| | - Mai Kurihara
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Ota‑ku, Tokyo 145‑8515, Japan
| | - Toshikazu Shimane
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Ota‑ku, Tokyo 145‑8515, Japan
| | - Tatsuo Shirota
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Ota‑ku, Tokyo 145‑8515, Japan
| |
Collapse
|
5
|
Chen H, Chen X, Zhang Z, Bao W, Gao Z, Li D, Xie X, Zhou P, Yang C, Zhou Z, Pan J, Kuang X, Tang R, Feng Z, Zhou L, Zhu D, Yang J, Wang L, Huang H, Tang D, Liu J, Jiang L. Extracellular vesicles-transferred SBSN drives glioma aggressiveness by activating NF-κB via ANXA1-dependent ubiquitination of NEMO. Oncogene 2022; 41:5253-5265. [DOI: 10.1038/s41388-022-02520-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 10/16/2022] [Accepted: 10/17/2022] [Indexed: 12/04/2022]
|
6
|
Ucer O, Kocaman N. New candidates in the differential diagnosis of malignant mesothelioma from benign mesothelial hyperplasia and adenocarcinoma; DARS2 and suprabasin. Tissue Cell 2022; 79:101920. [DOI: 10.1016/j.tice.2022.101920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/18/2022] [Accepted: 09/05/2022] [Indexed: 11/28/2022]
|
7
|
Ucer O, Kocaman N. Role of suprabasin, a new biomarker in squamous cell carcinoma and basal cell carcinoma. Tissue Cell 2022; 78:101875. [DOI: 10.1016/j.tice.2022.101875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/23/2022] [Accepted: 07/23/2022] [Indexed: 10/16/2022]
|
8
|
Zhou Z, Zhang Z, Chen H, Bao W, Kuang X, Zhou P, Gao Z, Li D, Xie X, Yang C, Chen X, Pan J, Tang R, Feng Z, Zhou L, Wang L, Yang J, Jiang L. SBSN drives bladder cancer metastasis via EGFR/SRC/STAT3 signalling. Br J Cancer 2022; 127:211-222. [PMID: 35484216 PMCID: PMC9296541 DOI: 10.1038/s41416-022-01794-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 02/25/2022] [Accepted: 03/11/2022] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Patients with metastatic bladder cancer have very poor prognosis and predictive biomarkers are urgently needed for early clinical detection and intervention. In this study, we evaluate the effect and mechanism of Suprabasin (SBSN) on bladder cancer metastasis. METHODS A tissue array was used to detect SBSN expression by immunohistochemistry. A tumour-bearing mouse model was used for metastasis evaluation in vivo. Transwell and wound-healing assays were used for in vitro evaluation of migration and invasion. Comprehensive molecular screening was achieved by western blotting, immunofluorescence, luciferase reporter assay, and ELISA. RESULTS SBSN was found markedly overexpressed in bladder cancer, and indicated poor prognosis of patients. SBSN promoted invasion and metastasis of bladder cancer cells both in vivo and in vitro. The secreted SBSN exhibited identical biological function and regulation in bladder cancer metastasis, and the interaction of secreted SBSN and EGFR could play an essential role in activating the signalling in which SBSN enhanced the phosphorylation of EGFR and SRC kinase, followed with phosphorylation and nuclear location of STAT3. CONCLUSIONS Our findings highlight that SBSN, and secreted SBSN, promote bladder cancer metastasis through activation of EGFR/SRC/STAT3 pathway and identify SBSN as a potential diagnostic and therapeutic target for bladder cancer.
Collapse
Affiliation(s)
- Zhongqiu Zhou
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, 511436, Guangzhou, China.,Meishan Women and Children's Hospital, Alliance Hospital of West China Second University Hospital, Sichuan University, 620000, Meishan, China
| | - Zhuojun Zhang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, 511436, Guangzhou, China
| | - Han Chen
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, 511436, Guangzhou, China
| | - Wenhao Bao
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, 511436, Guangzhou, China
| | - Xiangqin Kuang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, 511436, Guangzhou, China
| | - Ping Zhou
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, 511436, Guangzhou, China
| | - Zhiqing Gao
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, 511436, Guangzhou, China
| | - Difeng Li
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, 511436, Guangzhou, China
| | - Xiaoyi Xie
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, 511436, Guangzhou, China
| | - Chunxiao Yang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, 511436, Guangzhou, China
| | - Xuhong Chen
- Medical Research Center, Southern University of Science and Technology Hospital, 518055, Shenzhen, China
| | - Jinyuan Pan
- Department of Oncology, Huanggang Central Hospital of Yangtze University, 438000, Huanggang, China
| | - Ruiming Tang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, 511518, Guangzhou, China
| | - Zhengfu Feng
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, 511518, Guangzhou, China
| | - Lihuan Zhou
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, 511518, Guangzhou, China
| | - Lan Wang
- Department of Pathogen Biology and Immunology, School of Basic Courses, Guangdong Pharmaceutical University, 510006, Guangzhou, China
| | - Jianan Yang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China. .,Department of Urologic Oncosurgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China.
| | - Lili Jiang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, 510095, Guangzhou, China. .,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, 511436, Guangzhou, China.
| |
Collapse
|
9
|
Hoang TT, Ichinose K, Morimoto S, Furukawa K, Le LH, Kawakami A. Measurement of anti-suprabasin antibodies, multiple cytokines and chemokines as potential predictive biomarkers for neuropsychiatric systemic lupus erythematosus. Clin Immunol 2022; 237:108980. [DOI: 10.1016/j.clim.2022.108980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 11/28/2022]
|
10
|
Tan H, Wang L, Liu Z. Role of Suprabasin in the Dedifferentiation of Follicular Epithelial Cell-Derived Thyroid Cancer and Identification of Related Immune Markers. Front Genet 2022; 13:810681. [PMID: 35222534 PMCID: PMC8865917 DOI: 10.3389/fgene.2022.810681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 01/14/2022] [Indexed: 11/30/2022] Open
Abstract
Background: Aberrant regulation of suprabasin (SBSN) is associated with the development of cancer and immune disorders. SBSN influences tumor cell migration, proliferation, angiogenesis, and immune resistance. In this study, we investigated the potential correlation between SBSN expression and immune infiltration in thyroid cancer. Methods: The expression of SBSN in 80 papillary thyroid carcinoma (PTC) specimens was determined using quantitative reverse-transcription polymerase chain reaction, western blotting, and immunohistochemical staining. The expression of SBSN in 9 cases of poorly differentiated thyroid carcinoma (PDTC) and 18 cases of anaplastic thyroid carcinoma (ATC) was evaluated by immunohistochemical staining. Comprehensive bioinformatics analysis of SBSN expression was performed using The Cancer Genome Atlas and Gene Expression Omnibus datasets, and the relationship of SBSN expression with M2 macrophages and T regulatory cells (Tregs) in ATC and PTC was verified by immunohistochemical staining. Results: Compared with those in adjacent normal tissues, the expression levels of SBSN mRNA and protein were significantly higher in PTC tissues. SBSN expression level was correlated with that of cervical lymph node metastasis in PTC patients. Immunohistochemical staining results showed statistically significant differences among high-positive expression rates of SBSN in PTC, PDTC, and ATC. Functional enrichment analysis showed that SBSN expression was associated with pathways related to cancer, cell signaling, and immune response. Furthermore, analysis of the tumor microenvironment (using CIBERSORT-ABS and xCell algorithms) showed that SBSN expression affected immune cell infiltration and the cancer immunity cycle, and immunohistochemistry confirmed a significant increase in M2 macrophage and Treg infiltration in tumor tissues with high-positive SBSN expression. Conclusion: These findings reveal that SBSN may be involved in thyroid carcinogenesis, tumor dedifferentiation progression, and immunosuppression as an important regulator of tumor immune cell infiltration.
Collapse
|
11
|
Muhammad K, Xavier D, Klein-Hessling S, Azeem M, Rauschenberger T, Murti K, Avots A, Goebeler M, Klein M, Bopp T, Sielaff M, Tenzer S, Möckel S, Aramburu J, López-Rodríguez C, Kerstan A, Serfling E. NFAT5 Controls the Integrity of Epidermis. Front Immunol 2021; 12:780727. [PMID: 34956208 PMCID: PMC8696207 DOI: 10.3389/fimmu.2021.780727] [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: 09/21/2021] [Accepted: 11/15/2021] [Indexed: 11/13/2022] Open
Abstract
The skin protects the human body against dehydration and harmful challenges. Keratinocytes (KCs) are the most abundant epidermal cells, and it is anticipated that KC-mediated transport of Na+ ions creates a physiological barrier of high osmolality against the external environment. Here, we studied the role of NFAT5, a transcription factor whose activity is controlled by osmotic stress in KCs. Cultured KCs from adult mice were found to secrete more than 300 proteins, and upon NFAT5 ablation, the secretion of several matrix proteinases, including metalloproteinase-3 (Mmp3) and kallikrein-related peptidase 7 (Klk7), was markedly enhanced. An increase in Mmp3 and Klk7 RNA levels was also detected in transcriptomes of Nfat5-/- KCs, along with increases of numerous members of the 'Epidermal Differentiation Complex' (EDC), such as small proline-rich (Sprr) and S100 proteins. NFAT5 and Mmp3 as well as NFAT5 and Klk7 are co-expressed in the basal KCs of fetal and adult epidermis but not in basal KCs of newborn (NB) mice. The poor NFAT5 expression in NB KCs is correlated with a strong increase in Mmp3 and Klk7 expression in KCs of NB mice. These data suggests that, along with the fragile epidermis of adult Nfat5-/- mice, NFAT5 keeps in check the expression of matrix proteases in epidermis. The NFAT5-mediated control of matrix proteases in epidermis contributes to the manifold changes in skin development in embryos before and during birth, and to the integrity of epidermis in adults.
Collapse
Affiliation(s)
- Khalid Muhammad
- Department of Molecular Pathology, Institute of Pathology, University of Wuerzburg, Wuerzburg, Germany
| | - Delicia Xavier
- Department of Molecular Pathology, Institute of Pathology, University of Wuerzburg, Wuerzburg, Germany
| | - Stefan Klein-Hessling
- Department of Molecular Pathology, Institute of Pathology, University of Wuerzburg, Wuerzburg, Germany.,Comprehensive Cancer Centre Mainfranken, Wuerzburg, Germany
| | - Muhammad Azeem
- Department of Molecular Pathology, Institute of Pathology, University of Wuerzburg, Wuerzburg, Germany.,Department of Dermatology, Venereology and Allergology, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Tabea Rauschenberger
- Department of Molecular Pathology, Institute of Pathology, University of Wuerzburg, Wuerzburg, Germany
| | - Krisna Murti
- Department of Molecular Pathology, Institute of Pathology, University of Wuerzburg, Wuerzburg, Germany
| | - Andris Avots
- Department of Molecular Pathology, Institute of Pathology, University of Wuerzburg, Wuerzburg, Germany.,Comprehensive Cancer Centre Mainfranken, Wuerzburg, Germany
| | - Matthias Goebeler
- Department of Dermatology, Venereology and Allergology, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Matthias Klein
- Institute for Immunology, University Medical Center, University of Mainz, Mainz, Germany
| | - Tobias Bopp
- Institute for Immunology, University Medical Center, University of Mainz, Mainz, Germany.,Research Center for Immunotherapy, University Medical Center, University of Mainz, Mainz, Germany.,University Cancer Center Mainz, University Medical Center, University of Mainz, Mainz, Germany
| | - Malte Sielaff
- Institute for Immunology, University Medical Center, University of Mainz, Mainz, Germany
| | - Stefan Tenzer
- Institute for Immunology, University Medical Center, University of Mainz, Mainz, Germany
| | - Sigrid Möckel
- Institute of Pathology, University of Wuerzburg, Wuerzburg, Germany
| | - José Aramburu
- Immunology Unit, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Cristina López-Rodríguez
- Immunology Unit, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Andreas Kerstan
- Department of Dermatology, Venereology and Allergology, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Edgar Serfling
- Department of Molecular Pathology, Institute of Pathology, University of Wuerzburg, Wuerzburg, Germany.,Comprehensive Cancer Centre Mainfranken, Wuerzburg, Germany
| |
Collapse
|
12
|
Suprabasin: Role in human cancers and other diseases. Mol Biol Rep 2021; 49:1453-1461. [PMID: 34775572 DOI: 10.1007/s11033-021-06897-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 10/29/2021] [Indexed: 10/19/2022]
Abstract
Suprabasin (SBSN), a gene with unknown function located in q13 region of chromosome 19, was first found to be expressed in the basal layer of the stratified epithelium in mouse and human tissues and was thought to be a potential precursor of keratinized capsules. However, in recent years, significant progress has been made in the study of SBSN in a variety of human diseases. One common theme appears to be the effect of SBSN on tumor progression, such as invasion, metastasis and resistance. However, the function and mechanism of action of SBSN is still elusive. In this study, we reviewed the literature on SBSN in the PubMed database to identify the basic characteristics, biological functions, and roles of SBSN in cancer and other diseases. In particular, we focused on the potential mechanisms of SBSN activity, to improve our understanding of the complex function of this protein and provide a theoretical basis for further research on the role of SBSN in cancer and other diseases.
Collapse
|
13
|
Gallegos-Alcalá P, Jiménez M, Cervantes-García D, Salinas E. The Keratinocyte as a Crucial Cell in the Predisposition, Onset, Progression, Therapy and Study of the Atopic Dermatitis. Int J Mol Sci 2021; 22:ijms221910661. [PMID: 34639001 PMCID: PMC8509070 DOI: 10.3390/ijms221910661] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/27/2021] [Accepted: 09/27/2021] [Indexed: 12/24/2022] Open
Abstract
The keratinocyte (KC) is the main functional and structural component of the epidermis, the most external layer of the skin that is highly specialized in defense against external agents, prevention of leakage of body fluids and retention of internal water within the cells. Altered epidermal barrier and aberrant KC differentiation are involved in the pathophysiology of several skin diseases, such as atopic dermatitis (AD). AD is a chronic inflammatory disease characterized by cutaneous and systemic immune dysregulation and skin microbiota dysbiosis. Nevertheless, the pathological mechanisms of this complex disease remain largely unknown. In this review, we summarize current knowledge about the participation of the KC in different aspects of the AD. We provide an overview of the genetic predisposing and environmental factors, inflammatory molecules and signaling pathways of the KC that participate in the physiopathology of the AD. We also analyze the link among the KC, the microbiota and the inflammatory response underlying acute and chronic skin AD lesions.
Collapse
Affiliation(s)
- Pamela Gallegos-Alcalá
- Department of Microbiology, Center of Basic Science, Autonomous University of Aguascalientes, Aguascalientes 20100, Mexico; (P.G.-A.); (M.J.); (D.C.-G.)
| | - Mariela Jiménez
- Department of Microbiology, Center of Basic Science, Autonomous University of Aguascalientes, Aguascalientes 20100, Mexico; (P.G.-A.); (M.J.); (D.C.-G.)
| | - Daniel Cervantes-García
- Department of Microbiology, Center of Basic Science, Autonomous University of Aguascalientes, Aguascalientes 20100, Mexico; (P.G.-A.); (M.J.); (D.C.-G.)
- National Council of Science and Technology, Ciudad de México 03940, Mexico
| | - Eva Salinas
- Department of Microbiology, Center of Basic Science, Autonomous University of Aguascalientes, Aguascalientes 20100, Mexico; (P.G.-A.); (M.J.); (D.C.-G.)
- Correspondence: ; Tel.: +52-449-9108424
| |
Collapse
|
14
|
Uchiyama A, Fujiwara C, Inoue Y, Uchida K, Hiyama M, Itabashi H, Motegi S. The effect of balneotherapy with natural mineral dissolved water on dry skin in atopic dermatitis: A phase IIa, nonrandomized, controlled study. JOURNAL OF CUTANEOUS IMMUNOLOGY AND ALLERGY 2021. [DOI: 10.1002/cia2.12195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Akihiko Uchiyama
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Chisako Fujiwara
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Yuta Inoue
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Kazushi Uchida
- Graduate School of Science and Technology Gunma University Kiryu Japan
| | - Miyabi Hiyama
- Graduate School of Science and Technology Gunma University Kiryu Japan
| | - Hideyuki Itabashi
- Graduate School of Science and Technology Gunma University Kiryu Japan
| | - Sei‐ichiro Motegi
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| |
Collapse
|
15
|
Takahashi K, Asano N, Imatani A, Kondo Y, Saito M, Takeuchi A, Jin X, Saito M, Hatta W, Asanuma K, Uno K, Koike T, Masamune A. Sox2 induces tumorigenesis and angiogenesis of early-stage esophageal squamous cell carcinoma through secretion of Suprabasin. Carcinogenesis 2021; 41:1543-1552. [PMID: 32055838 DOI: 10.1093/carcin/bgaa014] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 01/27/2020] [Accepted: 02/12/2020] [Indexed: 02/06/2023] Open
Abstract
Early stage of esophageal squamous cell carcinoma (ESCC) is known to be accompanied by angiogenesis and morphological changes of microvessels. Transcription factor Sox2 is amplified in various cancers including ESCC, but the role of Sox2 in the carcinogenesis and angiogenesis has not been determined. Hence, we aimed to investigate the role of Sox2 in the early stage of ESCC. We found that the expression of Sox2 was significantly higher in early-stage ESCC tissues than that in their adjacent normal tissues. We then established Sox2-inducible normal human esophageal squamous cell line (HetSox2) to investigate the role of Sox2 in esophageal carcinogenesis and angiogenesis in vitro. Sox2 overexpression led to increased cell proliferation and spheroid formation. The culture supernatant of Sox2-overexpressing HetSox2 induced migration and sprouting of endothelial cell line HUVEC (human umbilical vein endothelial cell). As for the mechanism, we found that the expression of secreted protein Suprabasin was directly induced by Sox2. Suprabasin enhanced proliferation of normal human esophageal squamous cells when added to the culture. Moreover, Suprabasin enhanced migration and sprouting of HUVEC cells, which were observed with the culture supernatant of Sox2-overexpressing HetSox2. This angiogenic effect of Suprabasin was abolished by inhibiting AKT phosphorylation, which suggested its dependence on AKT signaling. Finally, we showed that Suprabasin expression and the density of microvessels were significantly higher in ESCC tissues with high Sox2 expression. Our study suggested that increased Sox2 expression in esophageal squamous cells induced Suprabasin expression, and as a result initiated the carcinogenesis via increased cell proliferation and angiogenesis.
Collapse
Affiliation(s)
- Kiichi Takahashi
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Naoki Asano
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Akira Imatani
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Yutaka Kondo
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Masashi Saito
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Akio Takeuchi
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Xiaoyi Jin
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Masahiro Saito
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Waku Hatta
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Kiyotaka Asanuma
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Kaname Uno
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Tomoyuki Koike
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Atsushi Masamune
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| |
Collapse
|
16
|
Abstract
Among the ~22,000 human genes, very few remain that have unknown functions. One such example is suprabasin (SBSN). Originally described as a component of the cornified envelope, the function of stratified epithelia-expressed SBSN is unknown. Both the lack of knowledge about the gene role under physiological conditions and the emerging link of SBSN to various human diseases, including cancer, attract research interest. The association of SBSN expression with poor prognosis of patients suffering from oesophageal carcinoma, glioblastoma multiforme, and myelodysplastic syndromes suggests that SBSN may play a role in human tumourigenesis. Three SBSN isoforms code for the secreted proteins with putative function as signalling molecules, yet with poorly described effects. In this first review about SBSN, we summarised the current knowledge accumulated since its original description, and we discuss the potential mechanisms and roles of SBSN in both physiology and pathology.
Collapse
|
17
|
Taguchi T, Kodera Y, Oba K, Saito T, Nakagawa Y, Kawashima Y, Shichiri M. Suprabasin-derived bioactive peptides identified by plasma peptidomics. Sci Rep 2021; 11:1047. [PMID: 33441610 PMCID: PMC7806982 DOI: 10.1038/s41598-020-79353-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 11/08/2020] [Indexed: 01/29/2023] Open
Abstract
Identification of low-abundance, low-molecular-weight native peptides using non-tryptic plasma has long remained an unmet challenge, leaving potential bioactive/biomarker peptides undiscovered. We have succeeded in efficiently removing high-abundance plasma proteins to enrich and comprehensively identify low-molecular-weight native peptides using mass spectrometry. Native peptide sequences were chemically synthesized and subsequent functional analyses resulted in the discovery of three novel bioactive polypeptides derived from an epidermal differentiation marker protein, suprabasin. SBSN_HUMAN[279-295] potently suppressed food/water intake and induced locomotor activity when injected intraperitoneally, while SBSN_HUMAN[225-237] and SBSN_HUMAN[243-259] stimulated the expression of proinflammatory cytokines via activation of NF-κB signaling in vascular cells. SBSN_HUMAN[225-237] and SBSN_HUMAN[279-295] immunoreactivities were present in almost all human organs analyzed, while immunoreactive SBSN_HUMAN[243-259] was abundant in the liver and pancreas. Human macrophages expressed the three suprabasin-derived peptides. This study illustrates a new approach for discovering unknown bioactive peptides in plasma via the generation of peptide libraries using a novel peptidomic strategy.
Collapse
Affiliation(s)
- Tomomi Taguchi
- grid.410786.c0000 0000 9206 2938Department of Endocrinology, Diabetes and Metabolism, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374 Japan
| | - Yoshio Kodera
- grid.410786.c0000 0000 9206 2938Department of Physics, Kitasato University School of Science, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373 Japan ,grid.410786.c0000 0000 9206 2938Center for Disease Proteomics, Kitasato University School of Science, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373 Japan
| | - Kazuhito Oba
- grid.410786.c0000 0000 9206 2938Department of Endocrinology, Diabetes and Metabolism, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374 Japan
| | - Tatsuya Saito
- grid.410786.c0000 0000 9206 2938Department of Endocrinology, Diabetes and Metabolism, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374 Japan ,grid.410786.c0000 0000 9206 2938Department of Physics, Kitasato University School of Science, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373 Japan
| | - Yuzuru Nakagawa
- grid.410786.c0000 0000 9206 2938Department of Physics, Kitasato University School of Science, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373 Japan
| | - Yusuke Kawashima
- grid.410786.c0000 0000 9206 2938Department of Physics, Kitasato University School of Science, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373 Japan
| | - Masayoshi Shichiri
- grid.410786.c0000 0000 9206 2938Department of Endocrinology, Diabetes and Metabolism, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0374 Japan
| |
Collapse
|
18
|
Bailey TW, Dos Santos AP, do Nascimento NC, Xie S, Thimmapuram J, Sivasankar MP, Cox A. RNA sequencing identifies transcriptional changes in the rabbit larynx in response to low humidity challenge. BMC Genomics 2020; 21:888. [PMID: 33308144 PMCID: PMC7733274 DOI: 10.1186/s12864-020-07301-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 12/04/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Voice disorders are a worldwide problem impacting human health, particularly for occupational voice users. Avoidance of surface dehydration is commonly prescribed as a protective factor against the development of dysphonia. The available literature inconclusively supports this practice and a biological mechanism for how surface dehydration of the laryngeal tissue affects voice has not been described. In this study, we used an in vivo male New Zealand white rabbit model to elucidate biological changes based on gene expression within the vocal folds from surface dehydration. Surface dehydration was induced by exposure to low humidity air (18.6% + 4.3%) for 8 h. Exposure to moderate humidity (43.0% + 4.3%) served as the control condition. Ilumina-based RNA sequencing was performed and used for transcriptome analysis with validation by RT-qPCR. RESULTS There were 103 statistically significant differentially expressed genes identified through Cuffdiff with 61 genes meeting significance by both false discovery rate and fold change. Functional annotation enrichment and predicted protein interaction mapping showed enrichment of various loci, including cellular stress and inflammatory response, ciliary function, and keratinocyte development. Eight genes were selected for RT-qPCR validation. Matrix metalloproteinase 12 (MMP12) and macrophage cationic peptide 1 (MCP1) were significantly upregulated and an epithelial chloride channel protein (ECCP) was significantly downregulated after surface dehydration by RNA-Seq and RT-qPCR. Suprabasin (SPBN) and zinc activated cationic channel (ZACN) were marginally, but non-significantly down- and upregulated as evidenced by RT-qPCR, respectively. CONCLUSIONS The data together support the notion that surface dehydration induces physiological changes in the vocal folds and justifies targeted analysis to further explore the underlying biology of compensatory fluid/ion flux and inflammatory mediators in response to airway surface dehydration.
Collapse
Affiliation(s)
- Taylor W Bailey
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN, 47907, USA.,Department of Public Health, Purdue University, West Lafayette, IN, 47907, USA
| | | | | | - Shaojun Xie
- Bioinformatics Core, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Jyothi Thimmapuram
- Bioinformatics Core, Purdue University, West Lafayette, Indiana, 47907, USA
| | - M Preeti Sivasankar
- Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Abigail Cox
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN, 47907, USA.
| |
Collapse
|
19
|
Effect of SUV39H1 Histone Methyltransferase Knockout on Expression of Differentiation-Associated Genes in HaCaT Keratinocytes. Cells 2020; 9:cells9122628. [PMID: 33297464 PMCID: PMC7762351 DOI: 10.3390/cells9122628] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/26/2020] [Accepted: 12/04/2020] [Indexed: 12/12/2022] Open
Abstract
Keratinocytes undergo a complex differentiation process, coupled with extensive changes in gene expression through which they acquire distinctive features indispensable for cells that form the external body barrier—epidermis. Disturbed epidermal differentiation gives rise to multiple skin diseases. The involvement of epigenetic factors, such as DNA methylation or histone modifications, in the regulation of epidermal gene expression and differentiation has not been fully recognized yet. In this work we performed a CRISPR/Cas9-mediated knockout of SUV39H1, a gene-encoding H3K9 histone methyltransferase, in HaCaT cells that originate from spontaneously immortalized human keratinocytes and examined changes in the expression of selected differentiation-specific genes located in the epidermal differentiation complex (EDC) and other genomic locations by RT-qPCR. The studied genes revealed a diverse differentiation state-dependent or -independent response to a lower level of H3K9 methylation. We also show, by means of chromatin immunoprecipitation, that the expression of genes in the LCE1 subcluster of EDC was regulated by the extent of trimethylation of lysine 9 in histone H3 bound to their promoters. Changes in gene expression were accompanied by changes in HaCaT cell morphology and adhesion.
Collapse
|
20
|
Suprabasin-null mice retain skin barrier function and show high contact hypersensitivity to nickel upon oral nickel loading. Sci Rep 2020; 10:14559. [PMID: 32884021 PMCID: PMC7471289 DOI: 10.1038/s41598-020-71536-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 08/06/2020] [Indexed: 12/22/2022] Open
Abstract
Suprabasin (SBSN) is expressed not only in epidermis but also in epithelial cells of the upper digestive tract where metals such as nickel are absorbed. We have recently shown that SBSN level is decreased in the stratum corneum and serum of atopic dermatitis (AD) patients, especially in intrinsic AD, which is characterized by metal allergy. By using SBSN-null (Sbsn–/–) mice, this study was conducted to investigate the outcome of SBSN deficiency in relation to AD. Sbsn–/– mice exhibited skin barrier dysfunction on embryonic day 16.5, but after birth, their barrier function was not perturbed despite the presence of ultrastructural changes in stratum corneum and keratohyalin granules. Sbsn–/– mice showed a comparable ovalbumin-specific skin immune response to wild type (WT) mice and rather lower contact hypersensitivity (CHS) responses to haptens than did WT mice. The blood nickel level after oral feeding of nickel was significantly higher in Sbsn–/– mice than in WT mice, and CHS to nickel was elevated in Sbsn–/– mice under nickel-loading condition. Our study suggests that the completely SBSN deficient mice retain normal barrier function, but harbor abnormal upper digestive tract epithelium that promotes nickel absorption and high CHS to nickel, sharing the features of intrinsic AD.
Collapse
|
21
|
Chermnykh ES, Alpeeva EV, Vorotelyak EA. Transglutaminase 3: The Involvement in Epithelial Differentiation and Cancer. Cells 2020; 9:cells9091996. [PMID: 32872587 PMCID: PMC7563467 DOI: 10.3390/cells9091996] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 08/21/2020] [Accepted: 08/26/2020] [Indexed: 12/14/2022] Open
Abstract
Transglutaminases (TGMs) contribute to the formation of rigid, insoluble macromolecular complexes, which are essential for the epidermis and hair follicles to perform protective and barrier functions against the environment. During differentiation, epidermal keratinocytes undergo structural alterations being transformed into cornified cells, which constitute a highly tough outermost layer of the epidermis, the stratum corneum. Similar processes occur during the hardening of the hair follicle and the hair shaft, which is provided by the enzymatic cross-linking of the structural proteins and keratin intermediate filaments. TGM3, also known as epidermal TGM, is one of the pivotal enzymes responsible for the formation of protein polymers in the epidermis and the hair follicle. Numerous studies have shown that TGM3 is extensively involved in epidermal and hair follicle physiology and pathology. However, the roles of TGM3, its substrates, and its importance for the integument system are not fully understood. Here, we summarize the main advances that have recently been achieved in TGM3 analyses in skin and hair follicle biology and also in understanding the functional role of TGM3 in human tumor pathology as well as the reliability of its prognostic clinical usage as a cancer diagnosis biomarker. This review also focuses on human and murine hair follicle abnormalities connected with TGM3 mutations.
Collapse
|
22
|
Pribyl M, Hubackova S, Moudra A, Vancurova M, Polackova H, Stopka T, Jonasova A, Bokorova R, Fuchs O, Stritesky J, Salovska B, Bartek J, Hodny Z. Aberrantly elevated suprabasin in the bone marrow as a candidate biomarker of advanced disease state in myelodysplastic syndromes. Mol Oncol 2020; 14:2403-2419. [PMID: 32696549 PMCID: PMC7530796 DOI: 10.1002/1878-0261.12768] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/06/2020] [Accepted: 07/16/2020] [Indexed: 12/14/2022] Open
Abstract
Myelodysplastic syndromes (MDS) are preleukemic disorders characterized by clonal growth of mutant hematopoietic stem and progenitor cells. MDS are associated with proinflammatory signaling, dysregulated immune response, and cell death in the bone marrow (BM). Aging, autoinflammation and autoimmunity are crucial features of disease progression, concordant with promoting growth of malignant clones and accumulation of mutations. Suprabasin (SBSN), a recently proposed proto‐oncogene of unknown function, physiologically expressed in stratified epithelia, is associated with poor prognosis of several human malignancies. Here, we showed that SBSN is expressed in the BM by myeloid cell subpopulations, including myeloid‐derived suppressor cells, and is secreted into BM plasma and peripheral blood of MDS patients. The highest expression of SBSN was present in a patient group with poor prognosis. SBSN levels in the BM correlated positively with blast percentage and negatively with CCL2 chemokine levels and lymphocyte count. In vitro treatment of leukemic cells with interferon‐gamma and demethylating agent 5‐azacytidine (5‐AC) induced SBSN expression. This indicated that aberrant cytokine levels in the BM and epigenetic landscape modifications in MDS patients may underlie ectopic expression of SBSN. Our findings suggest SBSN as a candidate biomarker of high‐risk MDS with a possible role in disease progression and therapy resistance.
Collapse
Affiliation(s)
- Miroslav Pribyl
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Sona Hubackova
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic.,Molecular Therapy of Cancer Group, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prague, Czech Republic
| | - Alena Moudra
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Marketa Vancurova
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Helena Polackova
- 1st Department of Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital, Prague, Czech Republic
| | - Tomas Stopka
- 1st Department of Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital, Prague, Czech Republic.,Group of Mechanisms Involved in Remodeling of Chromatin Structure During Cell Fate Decisions, BIOCEV, Prague, Czech Republic
| | - Anna Jonasova
- 1st Department of Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital, Prague, Czech Republic
| | - Radka Bokorova
- Department of Genomics, Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | - Ota Fuchs
- Department of Genomics, Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | - Jan Stritesky
- Institute of Pathology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Barbora Salovska
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jiri Bartek
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic.,Danish Cancer Society Research Center, Copenhagen, Denmark.,Division of Genome Biology, Department of Medical Biochemistry and Biophysics, Science for Life Laboratory, Karolinska Institute, Stockholm, Sweden
| | - Zdenek Hodny
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| |
Collapse
|
23
|
Xu D, Dang W, Wang S, Hu B, Yin L, Guan B. An optimal prognostic model based on gene expression for clear cell renal cell carcinoma. Oncol Lett 2020; 20:2420-2434. [PMID: 32782559 PMCID: PMC7400162 DOI: 10.3892/ol.2020.11780] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 06/06/2020] [Indexed: 12/11/2022] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is the most prevalent type of RCC; however, prognostic prediction tools for ccRCC are scant. Developing mRNA or long non-coding RNA (lncRNA)-based risk assessment tools may improve the prognosis in patients with ccRCC. RNA-sequencing and prognostic data from patients with ccRCC were downloaded from The Cancer Genome Atlas and the European Bioinformatics Institute Array database at the National Center for Biotechnology Information. Differentially expressed (DE) RNAs (DERs) and prognostic DERs were screened between less favorable and favorable prognoses using the limma package in R 3.4.1, and analyzed using univariate and multivariate Cox regression analyses, respectively. Risk score models were constructed using optimal combinations of DEmRNAs and DElncRNAs identified using the Least Absolute Shrinkage And Selection Operator Cox regression model of the penalized package. Associations between risk score models and overall survival time were evaluated. Independent prognostic clinical factors were screened using univariate and multivariate Cox regression analyses, and nomogram models were constructed. Gene Ontology biological processes and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses were conducted using the clusterProfiler package in R3.4.1. A total of 451 DERs were identified, including 404 mRNAs and 47 lncRNAs, between less favorable and favorable prognoses, and 269 DERs, including 233 mRNAs and 36 lncRNAs, were identified as independent prognostic factors. Optimal combinations including 10 DEmRNAs or 10 DElncRNAs were screened using four risk score models based on the status or expression levels of the 10 DEmRNAs or 10 DElncRNAs. The model based on the expression levels of the 10 DEmRNAs had the highest prognostic power. These prognostic DEmRNAs may be involved in biological processes associated with the inflammatory response, complement and coagulation cascades and neuroactive ligand-receptor interaction pathways. The present validated risk assessment tool based on the expression levels of these 10 DEmRNAs may help to identify patients with ccRCC at a high risk of mortality. These 10 DEmRNAs in optimal combinations may serve as prognostic biomarkers and help to elucidate the pathogenesis of ccRCC.
Collapse
Affiliation(s)
- Dan Xu
- Department of Nephrology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, P.R. China.,Department of Nephrology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, P.R. China
| | - Wantai Dang
- Department of Rheumatology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, P.R. China
| | - Shaoqing Wang
- Department of Nephrology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, P.R. China
| | - Bo Hu
- Department of Nephrology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Lianghong Yin
- Department of Nephrology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Baozhang Guan
- Department of Nephrology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, P.R. China
| |
Collapse
|
24
|
Schwartz N, Stock AD, Putterman C. Neuropsychiatric lupus: new mechanistic insights and future treatment directions. Nat Rev Rheumatol 2020; 15:137-152. [PMID: 30659245 DOI: 10.1038/s41584-018-0156-8] [Citation(s) in RCA: 218] [Impact Index Per Article: 54.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Patients with systemic lupus erythematosus (SLE) frequently show symptoms of central nervous system (CNS) involvement, termed neuropsychiatric SLE (NPSLE). The CNS manifestations of SLE are diverse and have a broad spectrum of severity and prognostic implications. Patients with NPSLE typically present with nonspecific symptoms, such as headache and cognitive impairment, but might also experience devastating features, such as memory loss, seizures and stroke. Some features of NPSLE, in particular those related to coagulopathy, have been characterized and an evidence-based treatment algorithm is available. The cognitive and affective manifestations of NPSLE, however, remain poorly understood. Various immune effectors have been evaluated as contributors to its pathogenesis, including brain-reactive autoantibodies, cytokines and cell-mediated inflammation. Additional brain-intrinsic elements (such as resident microglia, the blood-brain barrier and other neurovascular interfaces) are important facilitators of NPSLE. As yet, however, no unifying model has been found to underlie the pathogenesis of NPSLE, suggesting that this disease has multiple contributors and perhaps several distinct aetiologies. This heterogeneity presents a challenge for clinicians who have traditionally relied on empirical judgement in choosing treatment modalities for patients with NPSLE. Improved understanding of this manifestation of SLE might yield further options for managing this disease.
Collapse
Affiliation(s)
- Noa Schwartz
- Division of Rheumatology, Hospital for Special Surgery, New York, NY, USA
| | - Ariel D Stock
- Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Chaim Putterman
- Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, NY, USA. .,Division of Rheumatology, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY, USA.
| |
Collapse
|
25
|
Wang H, Liu J, Li J, Zang D, Wang X, Chen Y, Gu T, Su W, Song N. Identification of gene modules and hub genes in colon adenocarcinoma associated with pathological stage based on WGCNA analysis. Cancer Genet 2020; 242:1-7. [PMID: 32036224 DOI: 10.1016/j.cancergen.2020.01.052] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 01/22/2020] [Accepted: 01/30/2020] [Indexed: 02/07/2023]
Abstract
Colorectal cancer (CRC) is one of the leading causes of cancer-related mortality in the world, in which colon adenocarcinoma (COAD) is the most common histological subtype of CRC. In this study, our aim is to identify gene modules and representative candidate biomarkers for clinical prognosis of patients with COAD, and help to predict prognosis and reveal the mechanisms of cancer progression. Weighted gene co-expression network analysis (WGCNA) was performed to construct a co-expression network and identify gene modules correlated with TNM clinical staging of COAD patients. The Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were performed with the module gene. Protein-protein interaction (PPI) network and hub gene identification were explored with Cytoscape software. Finally, the hub gene mRNA level was validated in Oncomine database. Five gene modules, related with the pathological TNM stage, were constructed, and the gene module was enriched in cell proliferation, invasion and migration related GO terms and metabolic related KEGG pathways. A total of top 10 hub genes was identified, and in which six of the hub genes show a significant up-regulation in COAD as compared to normal tissue, including IVL, KRT16, KRT6C, KRT6A, KRT78 and SBSN. In conclusion, we identified five gene modules and six candidate biomarkers correlated with the TNM staging of COAD patients. These findings may help us to understand the tumor progression of COAD and provide prognostic biomarkers as well as therapeutic targets.
Collapse
Affiliation(s)
- Haijun Wang
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Jia Liu
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Jinsong Li
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Dan Zang
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Xiaohui Wang
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Yiyang Chen
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Tengteng Gu
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Wei Su
- Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Na Song
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China; Institute of Precision Medicine, Xinxiang Medical University, Xinxiang, China.
| |
Collapse
|
26
|
Rajagopalan P, Jain AP, Nanjappa V, Patel K, Mangalaparthi KK, Babu N, Cavusoglu N, Roy N, Soeur J, Breton L, Pandey A, Gowda H, Chatterjee A, Misra N. Proteome-wide changes in primary skin keratinocytes exposed to diesel particulate extract—A role for antioxidants in skin health. J Dermatol Sci 2019; 96:114-124. [DOI: 10.1016/j.jdermsci.2019.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
27
|
Utsunomiya A, Chino T, Utsunomiya N, Luong VH, Tokuriki A, Naganuma T, Arita M, Higashi K, Saito K, Suzuki N, Ohara A, Sugai M, Sugawara K, Tsuruta D, Oyama N, Hasegawa M. Homeostatic Function of Dermokine in the Skin Barrier and Inflammation. J Invest Dermatol 2019; 140:838-849.e9. [PMID: 31669414 DOI: 10.1016/j.jid.2019.09.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 09/06/2019] [Accepted: 09/23/2019] [Indexed: 10/25/2022]
Abstract
Dermokine is a chiefly skin-specific secreted glycoprotein localized in the upper epidermis, and its family consists of three splice variants in mice and five in humans. To investigate the pathophysiological impact of dermokine, we generated mice deficient for two (βγ) or all dermokine isoforms (αβγ). Both variants, especially dermokine αβγ-deficient mice exhibited scale and wrinkle formation resembling ichthyosis accompanied by transepidermal water imbalance at the neonatal stage. Several dermokine αβγ-deficient mice died by postnatal day 21 when reared under low humidity. Moreover, the cornified envelope was vulnerable, and skin barrier lipid ceramides were reduced in the epidermis of dermokine αβγ-deficient mice. cDNA microarray and quantitative reverse transcriptase-PCR assays of the epidermis revealed the upregulation of small proline-rich protein and late cornified envelope family members, as well as antimicrobial peptides in the dermokine αβγ-deficient mice. These barrier gene signatures were similar to that seen in psoriasis, whereas recent studies demonstrated that congenital ichthyosis has gene profiles resembling psoriasis. In line with these findings, adult dermokine αβγ-deficient mice exhibited aggravated phenotypes in psoriasis-like dermatitis models but not in allergic dermatitis models. Dermokine may play a regulatory role in inflammatory dyskeratotic diseases, such as congenital ichthyosis and psoriasis, in the crosstalk between barrier dysfunction and inflammation.
Collapse
Affiliation(s)
- Akira Utsunomiya
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Takenao Chino
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Natsuko Utsunomiya
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Vu Huy Luong
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Atsushi Tokuriki
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Tatsuro Naganuma
- Division of Physiological Chemistry and Metabolism, Keio University Faculty of Pharmacy, Tokyo, Japan; Laboratory for Metabolomics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Makoto Arita
- Division of Physiological Chemistry and Metabolism, Keio University Faculty of Pharmacy, Tokyo, Japan; Laboratory for Metabolomics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Kiyoshi Higashi
- Sumitomo Chemical Co., Ltd. Cell Science Group Environmental Health Science Laboratory, Osaka, Japan
| | - Koichi Saito
- Sumitomo Chemical Co., Ltd. Cell Science Group Environmental Health Science Laboratory, Osaka, Japan
| | - Noriyuki Suzuki
- Sumitomo Chemical Co., Ltd. Cell Science Group Environmental Health Science Laboratory, Osaka, Japan
| | - Ayako Ohara
- Sumitomo Chemical Co., Ltd. Cell Science Group Environmental Health Science Laboratory, Osaka, Japan
| | - Manabu Sugai
- Division of Molecular Genetics, Department of Biochemistry and Bioinformative Sciences, School of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Koji Sugawara
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Daisuke Tsuruta
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Noritaka Oyama
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Minoru Hasegawa
- Department of Dermatology, Division of Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan.
| |
Collapse
|
28
|
Labrecque MP, Coleman IM, Brown LG, True LD, Kollath L, Lakely B, Nguyen HM, Yang YC, da Costa RMG, Kaipainen A, Coleman R, Higano CS, Yu EY, Cheng HH, Mostaghel EA, Montgomery B, Schweizer MT, Hsieh AC, Lin DW, Corey E, Nelson PS, Morrissey C. Molecular profiling stratifies diverse phenotypes of treatment-refractory metastatic castration-resistant prostate cancer. J Clin Invest 2019; 129:4492-4505. [PMID: 31361600 DOI: 10.1172/jci128212] [Citation(s) in RCA: 235] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Metastatic castration-resistant prostate cancer (mCRPC) is a heterogeneous disease with diverse drivers of disease progression and mechanisms of therapeutic resistance. We conducted deep phenotypic characterization of CRPC metastases and patient-derived xenograft (PDX) lines using whole genome RNA sequencing, gene set enrichment analysis and immunohistochemistry. Our analyses revealed five mCRPC phenotypes based on the expression of well-characterized androgen receptor (AR) or neuroendocrine (NE) genes: (i) AR-high tumors (ARPC), (ii) AR-low tumors (ARLPC), (iii) amphicrine tumors composed of cells co-expressing AR and NE genes (AMPC), (iv) double-negative tumors (i.e. AR-/NE-; DNPC) and (v) tumors with small cell or NE gene expression without AR activity (SCNPC). RE1-silencing transcription factor (REST) activity, which suppresses NE gene expression, was lost in AMPC and SCNPC PDX models. However, knockdown of REST in cell lines revealed that attenuated REST activity drives the AMPC phenotype but is not sufficient for SCNPC conversion. We also identified a subtype of DNPC tumors with squamous differentiation and generated an encompassing 26-gene transcriptional signature that distinguished the five mCRPC phenotypes. Together, our data highlight the central role of AR and REST in classifying treatment-resistant mCRPC phenotypes. These molecular classifications could potentially guide future therapeutic studies and clinical trial design.
Collapse
Affiliation(s)
- Mark P Labrecque
- Department of Urology, University of Washington, Seattle, Washington, USA
| | - Ilsa M Coleman
- Divison of Human Biology and.,Divison of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Lisha G Brown
- Department of Urology, University of Washington, Seattle, Washington, USA
| | | | - Lori Kollath
- Department of Urology, University of Washington, Seattle, Washington, USA
| | - Bryce Lakely
- Department of Urology, University of Washington, Seattle, Washington, USA
| | - Holly M Nguyen
- Department of Urology, University of Washington, Seattle, Washington, USA
| | - Yu C Yang
- Divison of Human Biology and.,Divison of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Rui M Gil da Costa
- Divison of Human Biology and.,Divison of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Arja Kaipainen
- Divison of Human Biology and.,Divison of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Roger Coleman
- Divison of Human Biology and.,Divison of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Celestia S Higano
- Department of Urology, University of Washington, Seattle, Washington, USA.,Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, Washington, USA
| | - Evan Y Yu
- Divison of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, Washington, USA
| | - Heather H Cheng
- Divison of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, Washington, USA
| | - Elahe A Mostaghel
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, Washington, USA.,Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
| | - Bruce Montgomery
- Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, Washington, USA.,Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
| | - Michael T Schweizer
- Divison of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, Washington, USA
| | - Andrew C Hsieh
- Divison of Human Biology and.,Divison of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, Washington, USA
| | - Daniel W Lin
- Department of Urology, University of Washington, Seattle, Washington, USA.,Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Eva Corey
- Department of Urology, University of Washington, Seattle, Washington, USA
| | - Peter S Nelson
- Divison of Human Biology and.,Divison of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, Washington, USA
| | - Colm Morrissey
- Department of Urology, University of Washington, Seattle, Washington, USA
| |
Collapse
|
29
|
Aoshima M, Phadungsaksawasdi P, Nakazawa S, Iwasaki M, Sakabe JI, Umayahara T, Yatagai T, Ikeya S, Shimauchi T, Tokura Y. Decreased expression of suprabasin induces aberrant differentiation and apoptosis of epidermal keratinocytes: Possible role for atopic dermatitis. J Dermatol Sci 2019; 95:107-112. [PMID: 31399284 DOI: 10.1016/j.jdermsci.2019.07.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 06/16/2019] [Accepted: 07/22/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Suprabasin (SBSN), a secreted protein, is expressed in various epithelial tissues. The role of SBSN in epidermal differentiation and atopic dermatitis (AD) pathology remains largely unknown. OBJECTIVE To evaluate the effects of SBSN on epidermal keratinocytes and its role in AD. METHODS We examined the SBSN expression levels in the stratum corneum and the epidermis by proteome analysis and immunohistochemistry, respectively. The serum SBSN concentration was measured by ELISA. These values were compared between AD and healthy control. Morphological changes in the epidermis were investigated in SBSN-knockdown three-dimensional human living skin equivalent (LSE) model with or without IL-4/IL-13. RESULTS Epidermal SBSN expression was decreased in AD lesional skin compared to healthy skin, as assessed by the stratum corneum proteome analysis and immunohistochemistry. The SBSN serum levels were significantly lower in AD patients than in normal subjects (P<0.05). The SBSN-deficient LSE exhibited compact stratum corneum, immature stratum granulosum, and increased keratinocyte apoptosis. Th2 cytokines, IL-4 and IL-13, did not affect SBSN expression in LSE. There were no differentiation-associated makers that were affected by the SBSN knockdown. SBSN deficiency-induced apoptosis of keratinocytes was exaggerated by IL-4/IL-13, and accordingly, the addition of recombinant SBSN induced significant keratinocyte proliferation (P<0.05). CONCLUSION Our data demonstrated that SBSN regulates normal epidermal barrier. Th2 cytokines unaffect SBSN expression in keratinocytes, but promote SBSN deficiency-induced apoptosis. It is suggested that SBSN has an anti-apoptotic activity, and its deficiency is involved in the pathogenesis of AD.
Collapse
Affiliation(s)
- Masahiro Aoshima
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | | | - Shinsuke Nakazawa
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Manami Iwasaki
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Jun-Ichi Sakabe
- Institute of Molecular and Cell Biology, Agency for Science, Technology, and Research, Singapore
| | - Takatsune Umayahara
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tsuyoshi Yatagai
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Shigeki Ikeya
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Takatoshi Shimauchi
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yoshiki Tokura
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan.
| |
Collapse
|
30
|
Hubackova S, Pribyl M, Kyjacova L, Moudra A, Dzijak R, Salovska B, Strnad H, Tambor V, Imrichova T, Svec J, Vodicka P, Vaclavikova R, Rob L, Bartek J, Hodny Z. Interferon-regulated suprabasin is essential for stress-induced stem-like cell conversion and therapy resistance of human malignancies. Mol Oncol 2019; 13:1467-1489. [PMID: 30919591 PMCID: PMC6599850 DOI: 10.1002/1878-0261.12480] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/25/2019] [Accepted: 03/01/2019] [Indexed: 11/12/2022] Open
Abstract
Radiation and chemotherapy represent standard-of-care cancer treatments. However, most patients eventually experience tumour recurrence, treatment failure and metastatic dissemination with fatal consequences. To elucidate the molecular mechanisms of resistance to radio- and chemotherapy, we exposed human cancer cell lines (HeLa, MCF-7 and DU145) to clinically relevant doses of 5-azacytidine or ionizing radiation and compared the transcript profiles of all surviving cell subpopulations, including low-adherent stem-like cells. Stress-mobilized low-adherent cell fractions differed from other survivors in terms of deregulation of hundreds of genes, including those involved in interferon response. Exposure of cancer cells to interferon-gamma but not interferon-beta resulted in the development of a heterogeneous, low-adherent fraction comprising not only apoptotic/necrotic cells but also live cells exhibiting active Notch signalling and expressing stem-cell markers. Chemical inhibition of mitogen-activated protein kinase/ERK kinase (MEK) or siRNA-mediated knockdown of extracellular signal-regulated kinase 1/2 (Erk1/2) and interferon responsible factor 1 (IRF1) prevented mobilization of the surviving low-adherent population, indicating that interferon-gamma-mediated loss of adhesion and anoikis resistance required an active Erk pathway interlinked with interferon signalling by transcription factor IRF1. Notably, a skin-specific protein suprabasin (SBSN), a recently identified oncoprotein, was among the top scoring genes upregulated in surviving low-adherent cancer cells induced by 5-azacytidine or irradiation. SBSN expression required the activity of the MEK/Erk pathway, and siRNA-mediated knockdown of SBSN suppressed the low-adherent fraction in irradiated, interferon-gamma- and 5-azacytidine-treated cells, respectively, implicating SBSN in genotoxic stress-induced phenotypic plasticity and stress resistance. Importantly, SBSN expression was observed in human clinical specimens of colon and ovarian carcinomas, as well as in circulating tumour cells and metastases of the 4T1 mouse model. The association of SBSN expression with progressive stages of cancer development indicates its role in cancer evolution and therapy resistance.
Collapse
Affiliation(s)
- Sona Hubackova
- Laboratory of Genome Integrity, Institute of Molecular Genetics of the ASCR, v. v. i., Prague, Czech Republic.,Molecular Therapy Group, Institute of Biotechnology, Czech Academy of Sciences, BIOCEV, Vestec, Prague-West, Czech Republic
| | - Miroslav Pribyl
- Laboratory of Genome Integrity, Institute of Molecular Genetics of the ASCR, v. v. i., Prague, Czech Republic
| | - Lenka Kyjacova
- Laboratory of Genome Integrity, Institute of Molecular Genetics of the ASCR, v. v. i., Prague, Czech Republic
| | - Alena Moudra
- Laboratory of Genome Integrity, Institute of Molecular Genetics of the ASCR, v. v. i., Prague, Czech Republic
| | - Rastislav Dzijak
- Laboratory of Genome Integrity, Institute of Molecular Genetics of the ASCR, v. v. i., Prague, Czech Republic
| | - Barbora Salovska
- Laboratory of Genome Integrity, Institute of Molecular Genetics of the ASCR, v. v. i., Prague, Czech Republic
| | - Hynek Strnad
- Laboratory of Genomics and Bioinformatics, Institute of Molecular Genetics of the ASCR, v. v. i., Prague, Czech Republic
| | - Vojtech Tambor
- Biomedical Research Center, University Hospital Hradec Kralove, Czech Republic
| | - Terezie Imrichova
- Laboratory of Genome Integrity, Institute of Molecular Genetics of the ASCR, v. v. i., Prague, Czech Republic
| | - Jiri Svec
- Laboratory of Cell and Developmental Biology, Institute of Molecular Genetics of the ASCR, v. v. i., Prague, Czech Republic.,Department of Radiotherapy and Oncology, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Pavel Vodicka
- Department of the Molecular Biology of Cancer, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic.,Institute of Biology and Medical Genetics, 1st Medical Faculty, Charles University, Prague, Czech Republic
| | - Radka Vaclavikova
- Laboratory of Pharmacogenomics, Biomedical Centre, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Lukas Rob
- Department of Gynecology and Obstetrics, Third Faculty of Medicine, Vinohrady University Hospital, Charles University, Prague, Czech Republic
| | - Jiri Bartek
- Laboratory of Genome Integrity, Institute of Molecular Genetics of the ASCR, v. v. i., Prague, Czech Republic.,Danish Cancer Society Research Center, Copenhagen, Denmark.,Department of Medical Biochemistry and Biophysics, Division of Genome Biology, Science for Life Laboratory, Karolinska Institute, Stockholm, Sweden
| | - Zdenek Hodny
- Laboratory of Genome Integrity, Institute of Molecular Genetics of the ASCR, v. v. i., Prague, Czech Republic
| |
Collapse
|
31
|
Rosetti F, Crispín JC. Intrathecal anti-suprabasin antibodies in SLE, a cause of local concern? Clin Immunol 2018; 193:131-132. [DOI: 10.1016/j.clim.2017.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 11/27/2017] [Indexed: 11/26/2022]
|
32
|
Li J, Zheng L, Uchiyama A, Bin L, Mauro TM, Elias PM, Pawelczyk T, Sakowicz-Burkiewicz M, Trzeciak M, Leung DYM, Morasso MI, Yu P. A data mining paradigm for identifying key factors in biological processes using gene expression data. Sci Rep 2018; 8:9083. [PMID: 29899432 PMCID: PMC5998123 DOI: 10.1038/s41598-018-27258-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 05/21/2018] [Indexed: 12/15/2022] Open
Abstract
A large volume of biological data is being generated for studying mechanisms of various biological processes. These precious data enable large-scale computational analyses to gain biological insights. However, it remains a challenge to mine the data efficiently for knowledge discovery. The heterogeneity of these data makes it difficult to consistently integrate them, slowing down the process of biological discovery. We introduce a data processing paradigm to identify key factors in biological processes via systematic collection of gene expression datasets, primary analysis of data, and evaluation of consistent signals. To demonstrate its effectiveness, our paradigm was applied to epidermal development and identified many genes that play a potential role in this process. Besides the known epidermal development genes, a substantial proportion of the identified genes are still not supported by gain- or loss-of-function studies, yielding many novel genes for future studies. Among them, we selected a top gene for loss-of-function experimental validation and confirmed its function in epidermal differentiation, proving the ability of this paradigm to identify new factors in biological processes. In addition, this paradigm revealed many key genes in cold-induced thermogenesis using data from cold-challenged tissues, demonstrating its generalizability. This paradigm can lead to fruitful results for studying molecular mechanisms in an era of explosive accumulation of publicly available biological data.
Collapse
Affiliation(s)
- Jin Li
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, 77843, USA
- TEES-AgriLife Center for Bioinformatics and Genomic Systems Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Le Zheng
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Akihiko Uchiyama
- Laboratory of Skin Biology, National Institute for Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Lianghua Bin
- Department of Pediatrics, National Jewish Health, Denver, Colorado, USA
| | - Theodora M Mauro
- Dermatology Service, Veterans Affairs Medical Center, and Department of Dermatology, UCSF, San Francisco, California, USA
| | - Peter M Elias
- Dermatology Service, Veterans Affairs Medical Center, and Department of Dermatology, UCSF, San Francisco, California, USA
| | - Tadeusz Pawelczyk
- Department of Molecular Medicine, Medical University of Gdansk, Gdansk, Poland
| | | | - Magdalena Trzeciak
- Department of Dermatology, Venerology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Donald Y M Leung
- Department of Pediatrics, National Jewish Health, Denver, Colorado, USA
| | - Maria I Morasso
- Laboratory of Skin Biology, National Institute for Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Peng Yu
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, 77843, USA.
- TEES-AgriLife Center for Bioinformatics and Genomic Systems Engineering, Texas A&M University, College Station, TX, 77843, USA.
| |
Collapse
|
33
|
Rajagopalan P, Jain AP, Nanjappa V, Patel K, Mangalaparthi KK, Babu N, Cavusoglu N, Roy N, Soeur J, Breton L, Pandey A, Gowda H, Chatterjee A, Misra N. Proteome-wide changes in primary skin keratinocytes exposed to diesel particulate extract-A role for antioxidants in skin health. J Dermatol Sci 2018; 91:239-249. [PMID: 29857962 DOI: 10.1016/j.jdermsci.2018.05.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 04/02/2018] [Accepted: 05/01/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Skin acts as a protective barrier against direct contact with pollutants but inhalation and systemic exposure have indirect effect on keratinocytes. Exposure to diesel exhaust has been linked to increased oxidative stress. OBJECTIVE To investigate global proteomic alterations in diesel particulate extract (DPE)/its vapor exposed skin keratinocytes. METHODS We employed Tandem Mass Tag (TMT)-based proteomics to study effect of DPE/DPE vapor on primary skin keratinocytes. RESULTS We observed an increased expression of oxidative stress response protein NRF2, upon chronic exposure of primary keratinocytes to DPE/its vapor which includes volatile components such as polycyclic aromatic hydrocarbons (PAHs). Mass spectrometry-based quantitative proteomics led to identification 4490 proteins of which 201 and 374 proteins were significantly dysregulated (≥1.5 fold, p≤0.05) in each condition, respectively. Proteins involved in cellular processes such as cornification (cornifin A), wound healing (antileukoproteinase) and differentiation (suprabasin) were significantly downregulated in primary keratinocytes exposed to DPE/DPE vapor. These results were corroborated in 3D skin models chronically exposed to DPE/DPE vapor. Bioinformatics analyses indicate that DPE and its vapor affect distinct molecular processes in skin keratinocytes. Components of mitochondrial oxidative phosphorylation machinery were seen to be exclusively overexpressed upon chronic DPE vapor exposure. In addition, treatment with an antioxidant like vitamin E partially restores expression of proteins altered upon exposure to DPE/DPE vapor. CONCLUSIONS Our study highlights distinct adverse effects of chronic exposure to DPE/DPE vapor on skin keratinocytes and the potential role of vitamin E in alleviating adverse effects of environmental pollution.
Collapse
Affiliation(s)
| | - Ankit P Jain
- Institute of Bioinformatics, International Tech Park, Bangalore 560066, India.
| | | | - Krishna Patel
- Institute of Bioinformatics, International Tech Park, Bangalore 560066, India.
| | | | - Niraj Babu
- Institute of Bioinformatics, International Tech Park, Bangalore 560066, India; Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India.
| | - Nükhet Cavusoglu
- L'Oréal Research and Innovation, Aulnay sous bois, 93600, France.
| | - Nita Roy
- L'Oréal India Pvt. Ltd., Beary's Global Research Triangle, Bangalore 560067, India.
| | - Jeremie Soeur
- L'Oréal Research and Innovation, Aulnay sous bois, 93600, France.
| | - Lionel Breton
- L'Oréal Research and Innovation, Aulnay sous bois, 93600, France.
| | - Akhilesh Pandey
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA; Departments of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA; Departments of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA; Departments of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Harsha Gowda
- Institute of Bioinformatics, International Tech Park, Bangalore 560066, India.
| | - Aditi Chatterjee
- Institute of Bioinformatics, International Tech Park, Bangalore 560066, India.
| | - Namita Misra
- L'Oréal Research and Innovation, Aulnay sous bois, 93600, France; L'Oréal India Pvt. Ltd., Beary's Global Research Triangle, Bangalore 560067, India.
| |
Collapse
|
34
|
Proteomic approach to profiling immune complex antigens in cerebrospinal fluid samples from patients with central nervous system autoimmune diseases. Clin Chim Acta 2018; 484:26-31. [PMID: 29775619 DOI: 10.1016/j.cca.2018.05.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/23/2018] [Accepted: 05/11/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND Immune complexes (ICs) may clearly reflect immunological abnormalities caused by disease, especially for autoimmune diseases. Although ICs have been detected in cerebrospinal fluid (CSF) from patients with CNS autoimmune diseases, identities of antigens in such ICs have not been comprehensively determined. METHODS We used immune complexome analysis, in which nano-liquid chromatography-tandem mass spectrometry is employed to comprehensively identify antigens incorporated into ICs in biological fluids, to characterize ICs in CSF samples from patients with CNS autoimmune diseases, and to find disease-specific IC antigen to a certain CNS autoimmune disease. Also, we compared the IC antigens we identified with the reported CSF proteome or with the published plasma proteome to examine if the method is distinguished from the conventional CSF proteome analysis. RESULTS We identified 176 antigens in 78 CSF samples. We then assessed the overlaps among these antigens, the CSF proteome, and the plasma proteome; 140 of the 176 antigens were found to be exclusively detected by our method. Notably, IC-associated suprabasin in CSF was 100% specific to neuropsychiatric systemic lupus erythematosus (NPSLE). CONCLUSIONS This report is the first to comprehensively identify the antigens incorporated into ICs in CSF. There was limited overlap between the antigens we identified and the CSF proteome or the plasma proteome; therefore, our method can be distinguished from the conventional CSF proteome analysis. Although the sensitivity of disease-specific IC-antigens detected in immune complexome analysis screening, the sensitivity may be improved by developing an ELISA method specifically for detecting the ICs. Immune complexome analysis of CSF may be a new and promising path to biomarker discovery for diagnosis and study for CNS autoimmune diseases.
Collapse
|
35
|
Ichinose K, Ohyama K, Furukawa K, Higuchi O, Mukaino A, Satoh K, Nakane S, Shimizu T, Umeda M, Fukui S, Nishino A, Nakajima H, Koga T, Kawashiri SY, Iwamoto N, Tamai M, Nakamura H, Origuchi T, Yoshida M, Kuroda N, Kawakami A. Novel anti-suprabasin antibodies may contribute to the pathogenesis of neuropsychiatric systemic lupus erythematosus. Clin Immunol 2017; 193:123-130. [PMID: 29162406 DOI: 10.1016/j.clim.2017.11.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 10/19/2017] [Accepted: 11/17/2017] [Indexed: 01/12/2023]
Abstract
Neuropsychiatric systemic lupus erythematosus (NPSLE) is often difficult to diagnose and distinguish from other diseases, because no NPSLE-specific antibodies have been identified. We developed a novel proteomic strategy for identifying and profiling antigens in immune complexes in the cerebrospinal fluid (CSF), and applied this strategy to 26 NPSLE patients. As controls, we also included 25 SLE patients without neuropsychiatric manifestations (SLE), 15 with relapsing remitting multiple sclerosis (MS) and 10 with normal pressure hydrocephalus (NPH). We identified immune complexes of suprabasin (SBSN) in the CSF of the NPSLE group. The titer of anti-SBSN antibodies was significantly higher in the CSF of the NPSLE group compared to those of the SLE, MS and NPH groups. Microarray data showed that the senescence and autophagy pathways were significantly changed in astrocytes exposed to anti-SBSN antibodies. Our findings indicate that SBSN could be a novel autoantibody for the evaluation of suspected NPSLE.
Collapse
Affiliation(s)
- Kunihiro Ichinose
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
| | - Kaname Ohyama
- Course of Pharmaceutical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kaori Furukawa
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Osamu Higuchi
- Department of Clinical Research, Nagasaki Kawatana Medical Center, Nagasaki, Japan
| | - Akihiro Mukaino
- Department of Neurology and Strokology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Katsuya Satoh
- Department of Health Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shunya Nakane
- Department of Clinical Research, Nagasaki Kawatana Medical Center, Nagasaki, Japan
| | - Toshimasa Shimizu
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masataka Umeda
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shoichi Fukui
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Ayako Nishino
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hideki Nakajima
- Department of Neurology and Strokology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tomohiro Koga
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shin-Ya Kawashiri
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Naoki Iwamoto
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Mami Tamai
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hideki Nakamura
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tomoki Origuchi
- Department of Health Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Mari Yoshida
- Institute for Medical Science of Aging, Aichi Medical University, Nagakute, Japan
| | - Naotaka Kuroda
- Course of Pharmaceutical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Atsushi Kawakami
- Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| |
Collapse
|
36
|
Overexpression of Suprabasin is Associated with Proliferation and Tumorigenicity of Esophageal Squamous Cell Carcinoma. Sci Rep 2016; 6:21549. [PMID: 26899563 PMCID: PMC4761926 DOI: 10.1038/srep21549] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 01/27/2016] [Indexed: 12/27/2022] Open
Abstract
Suprabasin is a recently identified oncoprotein that is upregulated in multiple cancers. However, the clinical significance and biological role of suprabasin in human esophageal squamous cell carcinoma (ESCC) remains unclear. In the current study, we reported that suprabasin was markedly overexpressed in ESCC cell lines and tissues at both mRNA and protein levels, and this was associated with advanced clinical stage, tumor-nodes-metastasis (TNM) classification, histological differentiation, tumor size and poorer survival. Furthermore, we found that both proliferation and tumorigenicity of ESCC cells were significantly induced by suprabasin overexpression, but inhibited by suprabasin knock-down. Moreover, we demonstrated that upregulation of suprabasin activated the Wnt/β-catenin signaling pathway and led to nuclear localization of β-catenin and upregulation of Cyclin D1 and c-Myc. Together, our results suggest that suprabasin plays an important oncogenic role in promoting proliferation and tumorigenesis of ESCC.
Collapse
|
37
|
Tynyakov J, Bentov S, Abehsera S, Yehezkel G, Roth Z, Khalaila I, Weil S, Berman A, Plaschkes I, Tom M, Aflalo ED, Sagi A. A crayfish molar tooth protein with putative mineralized exoskeletal chitinous matrix properties. ACTA ACUST UNITED AC 2015; 218:3487-98. [PMID: 26385331 DOI: 10.1242/jeb.123539] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 09/04/2015] [Indexed: 01/08/2023]
Abstract
Some crustaceans possess exoskeletons that are reinforced with calcium carbonate. In the crayfish Cherax quadricarinatus, the molar tooth, which is part of the mandibular exoskeleton, contains an unusual crystalline enamel-like apatite layer. As this layer resembles vertebrate enamel in composition and function, it offers an interesting example of convergent evolution. Unlike other parts of the crayfish exoskeleton, which is periodically shed and regenerated during the molt cycle, molar mineral deposition takes place during the pre-molt stage. The molar mineral composition transforms continuously from fluorapatite through amorphous calcium phosphate to amorphous calcium carbonate and is mounted on chitin. The process of crayfish molar formation is entirely extracellular and presumably controlled by proteins, lipids, polysaccharides, low-molecular weight molecules and calcium salts. We have identified a novel molar protein termed Cq-M15 from C. quadricarinatus and cloned its transcript from the molar-forming epithelium. Its transcript and differential expression were confirmed by a next-generation sequencing library. The predicted acidic pI of Cq-M15 suggests its possible involvement in mineral arrangement. Cq-M15 is expressed in several exoskeletal tissues at pre-molt and its silencing is lethal. Like other arthropod cuticular proteins, Cq-M15 possesses a chitin-binding Rebers-Riddiford domain, with a recombinant version of the protein found to bind chitin. Cq-M15 was also found to interact with calcium ions in a concentration-dependent manner. This latter property might make Cq-M15 useful for bone and dental regenerative efforts. We suggest that, in the molar tooth, this protein might be involved in calcium phosphate and/or carbonate precipitation.
Collapse
Affiliation(s)
- Jenny Tynyakov
- Department of Life Sciences, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel National Institute for Biotechnology in the Negev, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel
| | - Shmuel Bentov
- Department of Life Sciences, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel National Institute for Biotechnology in the Negev, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel
| | - Shai Abehsera
- Department of Life Sciences, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel
| | - Galit Yehezkel
- Department of Biotechnology Engineering, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel
| | - Ziv Roth
- Department of Life Sciences, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel
| | - Isam Khalaila
- Department of Biotechnology Engineering, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel
| | - Simy Weil
- Department of Life Sciences, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel
| | - Amir Berman
- Department of Biotechnology Engineering, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel
| | - Inbar Plaschkes
- National Institute for Biotechnology in the Negev, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel
| | - Moshe Tom
- Israel Oceanographic and Limnological Research, Haifa 8511911, Israel
| | - Eliahu D Aflalo
- Department of Life Sciences, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel National Institute for Biotechnology in the Negev, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel
| | - Amir Sagi
- Department of Life Sciences, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel National Institute for Biotechnology in the Negev, Ben-Gurion University, PO Box 653, Beer-Sheva 84105, Israel
| |
Collapse
|
38
|
Alam MT, Nagao-Kitamoto H, Ohga N, Akiyama K, Maishi N, Kawamoto T, Shinohara N, Taketomi A, Shindoh M, Hida Y, Hida K. Suprabasin as a novel tumor endothelial cell marker. Cancer Sci 2014; 105:1533-40. [PMID: 25283635 PMCID: PMC4317965 DOI: 10.1111/cas.12549] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 09/26/2014] [Accepted: 09/30/2014] [Indexed: 01/24/2023] Open
Abstract
Recent studies have reported that stromal cells contribute to tumor progression. We previously demonstrated that tumor endothelial cells (TEC) characteristics were different from those of normal endothelial cells (NEC). Furthermore, we performed gene profile analysis in TEC and NEC, revealing that suprabasin (SBSN) was upregulated in TEC compared with NEC. However, its role in TEC is still unknown. Here we showed that SBSN expression was higher in isolated human and mouse TEC than in NEC. SBSN knockdown inhibited the migration and tube formation ability of TEC. We also showed that the AKT pathway was a downstream factor of SBSN. These findings suggest that SBSN is involved in the angiogenic potential of TEC and may be a novel TEC marker.
Collapse
Affiliation(s)
- Mohammad T Alam
- Vascular Biology, Frontier Research Unit, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan; Department of Oral Pathology and Biology, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Mirghani H, Ugolin N, Ory C, Lefèvre M, Baulande S, Hofman P, St Guily JL, Chevillard S, Lacave R. A predictive transcriptomic signature of oropharyngeal cancer according to HPV16 status exclusively. Oral Oncol 2014; 50:1025-34. [PMID: 25156715 DOI: 10.1016/j.oraloncology.2014.07.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 07/22/2014] [Accepted: 07/28/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Human-papillomaviruses (HPV) type 16 is a causative agent in an increasing subset of oropharyngeal squamous cell carcinomas (OPSCCs). These tumors have distinct oncogenic mechanisms and a more favorable prognosis than tobacco-induced OPSCCs. Although these differences emphasize the need for a specific therapeutic approach, HPV status is still not used to guide treatment. A better characterization of the molecular profile related to HPV16-induced OPSCC might help to develop personalized treatments. PATIENTS AND METHODS Using a human whole-genome DNA-microarray, we have examined the gene expression profiles in 15 HPV-negative and 15 transcriptionally-active HPV-positive OPSCCs. The study was conducted in two steps. Firstly, a learning/training-set consisting of 8 HPV16-positive and 8 HPV16-negative OPSCCs was analyzed to identify a specific signature. Potentially confounding factors (stage, sex and tobacco) were equally distributed in both groups. Subsequently the robustness of this signature was confirmed by blind case-by-case classification of a validation-set composed of the 14 remaining tumors. RESULTS We have identified a signature composed of 224 genes, which discriminates HPV16-induced OPSCC from their HPV-negative counterparts. After the blind classification of the 14 tumours, the viral status was revealed: 13 out of 14 tumors were correctly classified according to tumor etiology, 1/14 was not determined and none were misclassified. Several of the differentially expressed genes were involved in cell-cycle regulation, DNA replication and repair, transcription regulation, immune response and apoptosis. CONCLUSION Our study contributes to a better understanding of pathogenic mechanisms involved in the development of HPV-positive OPSCCs and in the identification of potential therapeutic targets.
Collapse
Affiliation(s)
- Haitham Mirghani
- ER2 unit and GRC10, Université Pierre et Marie Curie, Paris, France; Department of Head and Neck Surgery, Institut de Cancérologie Gustave Roussy, Villejuif, France.
| | - Nicolas Ugolin
- CEA, DSV, iRCM, Laboratory of Experimental Cancerology, BP64, 92265 Fontenay-aux-Roses Cedex, France
| | - Catherine Ory
- CEA, DSV, iRCM, Laboratory of Experimental Cancerology, BP64, 92265 Fontenay-aux-Roses Cedex, France
| | - Marine Lefèvre
- Department of Pathology, GHUEP, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, France
| | | | - Paul Hofman
- Laboratory of Clinical and Experimental Pathology and Biobank of CHUN, Pasteur Hospital, Nice F-06001, France
| | - Jean Lacau St Guily
- ER2 unit and GRC10, Université Pierre et Marie Curie, Paris, France; Department of Otolaryngology-Head and Neck Surgery, GHUEP, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, France
| | - Sylvie Chevillard
- CEA, DSV, iRCM, Laboratory of Experimental Cancerology, BP64, 92265 Fontenay-aux-Roses Cedex, France
| | - Roger Lacave
- ER2 unit and GRC10, Université Pierre et Marie Curie, Paris, France; Tumours Genomic Unit, GHUEP, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, France
| |
Collapse
|
40
|
Leclerc EA, Huchenq A, Kezic S, Serre G, Jonca N. Mice deficient for the epidermal dermokine β and γ isoforms display transient cornification defects. J Cell Sci 2014; 127:2862-72. [PMID: 24794495 DOI: 10.1242/jcs.144808] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Expression of the human dermokine gene (DMKN) leads to the production of four dermokine isoform families. The secreted α, β and γ isoforms have an epidermis-restricted expression pattern, with Dmkn β and γ being specifically expressed by the granular keratinocytes. The δ isoforms are intracellular and ubiquitous. Here, we performed an in-depth characterization of Dmkn expression in mouse skin and found an expression pattern that was less complex than in humans. In particular, mRNA coding for the δ family were absent. Homozygous mice null for the Dmkn β and γ isoforms had no obvious phenotype but only a temporary scaly skin during the first week of life. The pups null for the Dmkn β and γ isoforms had smaller keratohyalin granules and their cornified envelopes were more sensitive to mechanical stress. At the molecular level, amounts of profilaggrin and filaggrin monomers were reduced whereas amino acid components of the natural moisturizing factor were increased. In addition, the electrophoretic mobility of involucrin was modified, suggesting post-translational modifications. Finally, the mice null for the Dmkn β and γ isoforms strongly overexpressed Dmkn α. These data are evocative of compensatory mechanisms relevant to the temporary phenotype. Overall, we improved the knowledge of Dmkn expression in mouse and highlighted a role for Dmkn β and γ in cornification.
Collapse
Affiliation(s)
- Emilie A Leclerc
- UMR 5165 / U1056 'Différenciation Epidermique et Autoimmunité Rhumatoïde' (CNRS - INSERM - Université Toulouse III - CHU de Toulouse), Hôpital Purpan, Place du Dr Baylac, TSA 40031, 31059 Toulouse Cedex 9, France
| | - Anne Huchenq
- UMR 5165 / U1056 'Différenciation Epidermique et Autoimmunité Rhumatoïde' (CNRS - INSERM - Université Toulouse III - CHU de Toulouse), Hôpital Purpan, Place du Dr Baylac, TSA 40031, 31059 Toulouse Cedex 9, France
| | - Sanja Kezic
- Coronel Institute of Occupational Health, Academic Medical Center, 1105 Amsterdam, The Netherlands
| | - Guy Serre
- UMR 5165 / U1056 'Différenciation Epidermique et Autoimmunité Rhumatoïde' (CNRS - INSERM - Université Toulouse III - CHU de Toulouse), Hôpital Purpan, Place du Dr Baylac, TSA 40031, 31059 Toulouse Cedex 9, France
| | - Nathalie Jonca
- UMR 5165 / U1056 'Différenciation Epidermique et Autoimmunité Rhumatoïde' (CNRS - INSERM - Université Toulouse III - CHU de Toulouse), Hôpital Purpan, Place du Dr Baylac, TSA 40031, 31059 Toulouse Cedex 9, France
| |
Collapse
|
41
|
Dubash AD, Koetsier JL, Amargo EV, Najor NA, Harmon RM, Green KJ. The GEF Bcr activates RhoA/MAL signaling to promote keratinocyte differentiation via desmoglein-1. ACTA ACUST UNITED AC 2013; 202:653-66. [PMID: 23940119 PMCID: PMC3747303 DOI: 10.1083/jcb.201304133] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The GEF Bcr promotes RhoA-dependent actin remodeling and MAL/SRF signaling in keratinocytes, which in turn promotes differentiation via regulation of desmoglein-1 expression. Although much is known about signaling factors downstream of Rho GTPases that contribute to epidermal differentiation, little is known about which upstream regulatory proteins (guanine nucleotide exchange factors [GEFs] or GTPase-activating proteins [GAPs]) are involved in coordinating Rho signaling in keratinocytes. Here we identify the GEF breakpoint cluster region (Bcr) as a major upstream regulator of RhoA activity, stress fibers, and focal adhesion formation in keratinocytes. Loss of Bcr reduced expression of multiple markers of differentiation (such as desmoglein-1 [Dsg1], keratin-1, and loricrin) and abrogated MAL/SRF signaling in differentiating keratinocytes. We further demonstrated that loss of Bcr or MAL reduced levels of Dsg1 mRNA in keratinocytes, and ectopic expression of Dsg1 rescued defects in differentiation seen upon loss of Bcr or MAL signaling. Taken together, these data identify the GEF Bcr as a regulator of RhoA/MAL signaling in keratinocytes, which in turn promotes differentiation through the desmosomal cadherin Dsg1.
Collapse
Affiliation(s)
- Adi D Dubash
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | | | | | | | | | | |
Collapse
|
42
|
auf dem Keller U, Prudova A, Eckhard U, Fingleton B, Overall CM. Systems-level analysis of proteolytic events in increased vascular permeability and complement activation in skin inflammation. Sci Signal 2013; 6:rs2. [PMID: 23322905 DOI: 10.1126/scisignal.2003512] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
During inflammation, vascular permeability is increased by various proteolytic events, such as the generation of bradykinin, that augment local tissue responses by enabling tissue penetration of serum proteins, including complement and acute-phase proteins. Proteases also govern inflammatory responses by processing extracellular matrix proteins and soluble bioactive mediators. We quantified changes in the proteome and the nature of protein amino termini (the N-terminome) and the altered abundance of murine proteases and inhibitors during skin inflammation. Through analysis of the N-terminome by iTRAQ-TAILS, we identified cotranslational and posttranslational αN-acetylation motifs, quantitative increases in protein abundance, and qualitative changes in the proteolytic signature during inflammation. Of the proteins identified in normal skin, about half were cleaved, and phorbol ester-induced inflammation increased the proportion of cleaved proteins, including chemokines and complement proteins, that were processed at previously uncharacterized sites. In response to phorbol ester-induced inflammation, mice deficient in matrix metalloproteinase 2 (MMP2) showed reduced accumulation of serum proteins in the skin and exhibited different proteolytic networks from those of wild-type mice. We found that the complement 1 (C1) inhibitor attenuated the increase in serum protein accumulation in inflamed skin. Cleavage and inactivation of the C1 inhibitor by MMP2 increased complement activation and bradykinin generation in wild-type mice, leading to increased vessel permeability during inflammation, which was diminished in Mmp2(-/-) mice. Thus, our systems-level analysis of proteolysis dissected cleavage events associated with skin inflammation and demonstrated that loss of a single protease could perturb the proteolytic signaling network and enhance inflammation.
Collapse
Affiliation(s)
- Ulrich auf dem Keller
- Department of Oral Biological and Medical Sciences, 4.401 Life Sciences Institute, University of British Columbia, 2350 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | | | | | | | | |
Collapse
|
43
|
Shao C, Tan M, Bishop JA, Liu J, Bai W, Gaykalova DA, Ogawa T, Vikani AR, Agrawal Y, Li RJ, Kim MS, Westra WH, Sidransky D, Califano JA, Ha PK. Suprabasin is hypomethylated and associated with metastasis in salivary adenoid cystic carcinoma. PLoS One 2012; 7:e48582. [PMID: 23144906 PMCID: PMC3492451 DOI: 10.1371/journal.pone.0048582] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2012] [Accepted: 10/03/2012] [Indexed: 02/07/2023] Open
Abstract
Background Salivary gland adenoid cystic carcinoma (ACC) is a rare cancer, accounting for only 1% of all head and neck malignancies. ACC is well known for perineural invasion and distant metastasis, but its underlying molecular mechanisms of carcinogenesis are still unclear. Principal Findings Here, we show that a novel oncogenic candidate, suprabasin (SBSN), plays important roles in maintaining the anchorage-independent and anchorage-dependent cell proliferation in ACC by using SBSN shRNA stably transfected ACC cell line clones. SBSN is also important in maintaining the invasive/metastatic capability in ACC by Matrigel invasion assay. More interestingly, SBSN transcription is significantly upregulated by DNA demethylation induced by 5-aza-2′-deoxycytidine plus trichostatin A treatment and the DNA methylation levels of the SBSN CpG island located in the second intron were validated to be significantly hypomethylated in primary ACC samples versus normal salivary gland tissues. Conclusions/Significance Taken together, these results support SBSN as novel oncogene candidate in ACC, and the methylation changes could be a promising biomarker for ACC.
Collapse
Affiliation(s)
- Chunbo Shao
- Department of Otolaryngology-Head and Neck Surgery, the Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - Marietta Tan
- Department of Otolaryngology-Head and Neck Surgery, the Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - Justin A. Bishop
- Department of Surgical Pathology, the Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - Jia Liu
- University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Weiliang Bai
- Department of Otorhinolaryngology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Daria A. Gaykalova
- Department of Otolaryngology-Head and Neck Surgery, the Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - Takenori Ogawa
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Ami R. Vikani
- The George Washington University School of Medicine, Washington D.C., United States of America
| | - Yuri Agrawal
- Department of Otolaryngology-Head and Neck Surgery, the Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - Ryan J. Li
- Department of Otolaryngology-Head and Neck Surgery, the Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - Myoung Sook Kim
- Department of Otolaryngology-Head and Neck Surgery, the Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - William H. Westra
- Department of Surgical Pathology, the Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - David Sidransky
- Department of Otolaryngology-Head and Neck Surgery, the Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - Joseph A. Califano
- Department of Otolaryngology-Head and Neck Surgery, the Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
- Milton J Dance Jr. Head and Neck Center at the Greater Baltimore Medical Center, Baltimore, Maryland, United States of America
| | - Patrick K. Ha
- Department of Otolaryngology-Head and Neck Surgery, the Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
- Milton J Dance Jr. Head and Neck Center at the Greater Baltimore Medical Center, Baltimore, Maryland, United States of America
- * E-mail: *
| |
Collapse
|
44
|
Clark PA, Brown JL, Li S, Woods AK, Han L, Sones JL, Preston RL, Southard TL, Davisson RL, Roberson MS. Distal-less 3 haploinsufficiency results in elevated placental oxidative stress and altered fetal growth kinetics in the mouse. Placenta 2012; 33:830-8. [PMID: 22819041 DOI: 10.1016/j.placenta.2012.06.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 06/18/2012] [Accepted: 06/28/2012] [Indexed: 12/26/2022]
Abstract
Distal-less 3 (Dlx3)(-/-) mice die at E9.5 presumably due to an abnormal placental phenotype including reduced placental vasculature and secretion of placental growth factor. To examine the role of Dlx3 specifically within the epiblast, Dlx3 conditional knockout mice were generated using an epiblast-specific Meox2(CreSor) allele. Dlx3(-/fl), Meox2(CreSor) animals were born at expected frequencies and survived to weaning providing indirect evidence that loss of Dlx3 within the trophoectoderm plays a critical role in fetal survival in the Dlx3(-/-) mouse. We next examined the hypothesis that loss of a single Dlx3 allele would have a negative impact on placental and fetal fitness. Dlx3(+/-) mice displayed reduced fetal growth beginning at E12.5 compared with Dlx3(+/+) controls. Altered fetal growth trajectory occurred coincident with elevated oxidative stress and apoptosis within Dlx3(+/-) placentas. Oral supplementation with the superoxide dismutase mimetic, Tempol, rescued the fetal growth and placental cell death phenotypes in Dlx3(+/-) mice. To determine the potential mechanisms associated with elevated oxidative stress on the Dlx3(+/-) placentas, we next examined vascular characteristics within the feto-placental unit. Studies revealed reduced maternal spiral artery luminal area in the Dlx3(+/-) mice receiving water; Dlx3(+/-) mice receiving Tempol displayed maternal spiral artery luminal area similar to control Dlx3(+/+) mice. We conclude that reduced Dlx3 gene dose results in diminished fetal fitness associated with elevated placental cell oxidative stress and apoptosis coincident with altered vascular remodeling. Administration of antioxidant therapy ameliorated this feto-placental phenotype, suggesting that Dlx3 may be required for adaptation to oxidative stresses within the intrauterine environment.
Collapse
Affiliation(s)
- P A Clark
- Department of Biomedical Sciences, T4-018 Veterinary Research Tower, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Gaykalova D, Vatapalli R, Glazer CA, Bhan S, Shao C, Sidransky D, Ha PK, Califano JA. Dose-dependent activation of putative oncogene SBSN by BORIS. PLoS One 2012; 7:e40389. [PMID: 22792300 PMCID: PMC3390376 DOI: 10.1371/journal.pone.0040389] [Citation(s) in RCA: 30] [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: 02/01/2012] [Accepted: 06/06/2012] [Indexed: 11/18/2022] Open
Abstract
Testis-specific transcription factor BORIS (Brother of the Regulator of Imprinted Sites), a paralog and proposed functional antagonist of the widely expressed CTCF, is abnormally expressed in multiple tumor types and has been implicated in the epigenetic activation of cancer-testis antigens (CTAs). We have reported previously that suprabasin (SBSN), whose expression is restricted to the epidermis, is epigenetically derepressed in lung cancer. In this work, we establish that SBSN is a novel non-CTA target of BORIS epigenetic regulation. With the use of a doxycycline-inducible BORIS expressing vector, we demonstrate that relative BORIS dosage is critical for SBSN activation. At lower concentrations, BORIS induces demethylation of the SBSN CpG island and disruption and activation of chromatin around the SBSN transcription start site (TSS), resulting in a 35-fold increase in SBSN expression in the H358 human lung cancer cell line. Interestingly, increasing BORIS concentrations leads to a subsequent reduction in SBSN expression via chromatin repression. In a similar manner, increase in BORIS concentrations leads to eventual decrease of cell growth and colony formation. This is the first report demonstrating that different amount of BORIS defines its varied effects on the expression of a target gene via chromatin structure reorganization.
Collapse
Affiliation(s)
- Daria Gaykalova
- Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - Rajita Vatapalli
- Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - Chad A. Glazer
- Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - Sheetal Bhan
- Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - Chunbo Shao
- Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
| | - David Sidransky
- Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
- Department of Oncology, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
- Milton J. Dance Head and Neck Center, Greater Baltimore Medical Center, Baltimore, Maryland, United States of America
| | - Patrick K. Ha
- Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
- Milton J. Dance Head and Neck Center, Greater Baltimore Medical Center, Baltimore, Maryland, United States of America
| | - Joseph A. Califano
- Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
- Department of Oncology, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States of America
- Milton J. Dance Head and Neck Center, Greater Baltimore Medical Center, Baltimore, Maryland, United States of America
- * E-mail:
| |
Collapse
|
46
|
Müller AC, Breitwieser FP, Fischer H, Schuster C, Brandt O, Colinge J, Superti-Furga G, Stingl G, Elbe-Bürger A, Bennett KL. A comparative proteomic study of human skin suction blister fluid from healthy individuals using immunodepletion and iTRAQ labeling. J Proteome Res 2012; 11:3715-27. [PMID: 22578099 DOI: 10.1021/pr3002035] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Aberrations in skin morphology and functionality can cause acute and chronic skin-related diseases that are the focus of dermatological research. Mechanically induced skin suction blister fluid may serve as a potential, alternative human body fluid for quantitative mass spectrometry (MS)-based proteomics in order to assist in the understanding of the mechanisms and causes underlying skin-related diseases. The combination of abundant-protein removal with iTRAQ technology and multidimensional fractionation techniques improved the number of identified protein groups. A relative comparison of a cohort of 8 healthy volunteers was thus recruited in order to assess the net variability encountered in a healthy scenario. The technology enabled the identification, to date, of the highest number of reported protein groups (739) with concomitant relative quantitative data for over 90% of all proteins with high reproducibility and accuracy. The use of iTRAQ 8-plex resulted in a 66% decrease in protein identifications but, despite this, provided valuable insight into interindividual differences of the healthy control samples. The geometric mean ratio was close to 1 with 95% of all ratios ranging between 0.45 and 2.05 and a calculated mean coefficient of variation of 15.8%, indicating a lower biological variance than that reported for plasma or urine. By applying a multistep sample processing, the obtained sensitivity and accuracy of quantitative MS analysis demonstrates the prospective value of the approach in future research into skin diseases.
Collapse
Affiliation(s)
- André C Müller
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Hummelen R, Macklaim JM, Bisanz JE, Hammond JA, McMillan A, Vongsa R, Koenig D, Gloor GB, Reid G. Vaginal microbiome and epithelial gene array in post-menopausal women with moderate to severe dryness. PLoS One 2011; 6:e26602. [PMID: 22073175 PMCID: PMC3206802 DOI: 10.1371/journal.pone.0026602] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 09/29/2011] [Indexed: 02/01/2023] Open
Abstract
After menopause, many women experience vaginal dryness and atrophy of tissue, often attributed to the loss of estrogen. An understudied aspect of vaginal health in women who experience dryness due to atrophy is the role of the resident microbes. It is known that the microbiota has an important role in healthy vaginal homeostasis, including maintaining the pH balance and excluding pathogens. The objectives of this study were twofold: first to identify the microbiome of post-menopausal women with and without vaginal dryness and symptoms of atrophy; and secondly to examine any differences in epithelial gene expression associated with atrophy. The vaginal microbiome of 32 post-menopausal women was profiled using Illumina sequencing of the V6 region of the 16S rRNA gene. Sixteen subjects were selected for follow-up sampling every two weeks for 10 weeks. In addition, 10 epithelial RNA samples (6 healthy and 4 experiencing vaginal dryness) were acquired for gene expression analysis by Affymetrix Human Gene array. The microbiota abundance profiles were relatively stable over 10 weeks compared to previously published data on premenopausal women. There was an inverse correlation between Lactobacillus ratio and dryness and an increased bacterial diversity in women experiencing moderate to severe vaginal dryness. In healthy participants, Lactobacillus iners and L. crispatus were generally the most abundant, countering the long-held view that lactobacilli are absent or depleted in menopause. Vaginal dryness and atrophy were associated with down-regulation of human genes involved in maintenance of epithelial structure and barrier function, while those associated with inflammation were up-regulated consistent with the adverse clinical presentation.
Collapse
Affiliation(s)
- Ruben Hummelen
- Canadian Research & Development Centre for Probiotics, Lawson Health Research Institute, London, Canada
- Department of Public Health, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Jean M. Macklaim
- Canadian Research & Development Centre for Probiotics, Lawson Health Research Institute, London, Canada
- Biochemistry, The University of Western Ontario, London, Canada
| | - Jordan E. Bisanz
- Canadian Research & Development Centre for Probiotics, Lawson Health Research Institute, London, Canada
- Microbiology and Immunology, and Surgery, The University of Western Ontario, London, Canada
| | - Jo-Anne Hammond
- Canadian Research & Development Centre for Probiotics, Lawson Health Research Institute, London, Canada
- Family Medicine, The University of Western Ontario, London, Canada
| | - Amy McMillan
- Canadian Research & Development Centre for Probiotics, Lawson Health Research Institute, London, Canada
- Microbiology and Immunology, and Surgery, The University of Western Ontario, London, Canada
| | - Rebecca Vongsa
- Kimberly Clark Corporation, Corporate Research and Engineering-Microbial Control, Neenah, Wisconsin, United States of America
| | - David Koenig
- Kimberly Clark Corporation, Corporate Research and Engineering-Microbial Control, Neenah, Wisconsin, United States of America
| | - Gregory B. Gloor
- Canadian Research & Development Centre for Probiotics, Lawson Health Research Institute, London, Canada
- Biochemistry, The University of Western Ontario, London, Canada
| | - Gregor Reid
- Canadian Research & Development Centre for Probiotics, Lawson Health Research Institute, London, Canada
- Microbiology and Immunology, and Surgery, The University of Western Ontario, London, Canada
- * E-mail:
| |
Collapse
|
48
|
Hoffner G, Vanhoutteghem A, André W, Djian P. Transglutaminase in epidermis and neurological disease or what makes a good cross-linking substrate. ADVANCES IN ENZYMOLOGY AND RELATED AREAS OF MOLECULAR BIOLOGY 2011; 78:97-160. [PMID: 22220473 DOI: 10.1002/9781118105771.ch3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Guylaine Hoffner
- Unité Propre de Recherche 2228 du Centre National de la Recherche Scientifique, Régulation de la Transcription et Maladies Génétiques, Université Paris Descartes, Paris, France
| | | | | | | |
Collapse
|
49
|
Formolo CA, Williams R, Gordish-Dressman H, MacDonald TJ, Lee NH, Hathout Y. Secretome signature of invasive glioblastoma multiforme. J Proteome Res 2011; 10:3149-59. [PMID: 21574646 DOI: 10.1021/pr200210w] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The incurability of malignant glioblastomas is mainly attributed to their highly invasive nature coupled with resistance to chemo- and radiation therapy. Because invasiveness is partially dictated by the proteins these tumors secrete we used SILAC to characterize the secretomes of four glioblastoma cell lines (LN18, T98, U118 and U87). Although U87 and U118 cells both secreted high levels of well-known invasion promoting proteins, a Matrigel invasion assay showed U87 cells to be eight times more invasive than U118 cells, suggesting that additional proteins secreted by U87 cells may contribute to the highly invasive phenotype. Indeed, we identified a number of proteins highly or exclusively expressed by U87 cells as compared to the less invasive cell lines. The most striking of these include ADAM9, ADAM10, cathepsin B, cathepsin L1, osteopontin, neuropilin-1, semaphorin-7A, suprabasin, and chitinase-3-like protein 1. U87 cells also expressed significantly low levels of some cell adhesion proteins such as periostin and EMILIN-1. Correlation of secretome profiles with relative levels of invasiveness using Pavlidis template matching further indicated potential roles for these proteins in U87 glioblastoma invasion. Antibody inhibition of CH3L1 reduced U87 cell invasiveness by 30%.
Collapse
Affiliation(s)
- Catherine A Formolo
- Research Center for Genetic Medicine, Children's National Medical Center, 111 Michigan Avenue NW, Washington, D.C. 20010, USA
| | | | | | | | | | | |
Collapse
|
50
|
Ghosh S, Dean A, Walter M, Bao Y, Hu Y, Ruan J, Li R. Cell density-dependent transcriptional activation of endocrine-related genes in human adipose tissue-derived stem cells. Exp Cell Res 2010; 316:2087-98. [PMID: 20420826 DOI: 10.1016/j.yexcr.2010.04.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2009] [Revised: 03/23/2010] [Accepted: 04/19/2010] [Indexed: 10/19/2022]
Abstract
Adipose tissue is recognized as an endocrine organ that plays an important role in human diseases such as type II diabetes and cancer. Human adipose tissue-derived stem cells (ASCs), a distinct cell population in adipose tissue, are capable of differentiating into multiple lineages including adipogenesis. When cultured in vitro under a confluent condition, ASCs reach a commitment stage for adipogenesis, which can be further induced into terminally differentiated adipocytes by a cocktail of adipogenic factors. Here we report that the confluent state of ASCs triggers transcriptional activation cascades for genes that are responsible for the endocrine function of adipose tissue. These include insulin-like growth factor 1 (IGF-1) and aromatase (Cyp19), a key enzyme in estrogen biosynthesis. Despite similar adipogenic potentials, ASCs from different individuals display huge variations in activation of these endocrine-related genes. Bioinformatics and experimental data suggest that transcription factor Foxo1 controls a large number of "early" confluency-response genes, which subsequently induce "late" response genes. Furthermore, siRNA-mediated knockdown of Foxo1 substantially compromises the ability of committed ASCs to stimulate tumor cell migration in vitro. Thus, our work suggests that cell density is an important determinant of the endocrine potential of ASCs.
Collapse
Affiliation(s)
- Sagar Ghosh
- Department of Molecular Medicine, Institute of Biotechnology, 15355 Lambda Drive, University of Texas, Health Science Center at San Antonio, San Antonio, TX 78245, USA
| | | | | | | | | | | | | |
Collapse
|