1
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Gao K, Gao Z, Xia M, Li H, Di J. Role of plectin and its interacting molecules in cancer. Med Oncol 2023; 40:280. [PMID: 37632650 DOI: 10.1007/s12032-023-02132-4] [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: 04/24/2023] [Accepted: 07/20/2023] [Indexed: 08/28/2023]
Abstract
Plectin, as the cytolinker and scaffolding protein, are widely expressed and abundant in many tissues, and has involved in various cellular activities contributing to tumorigenesis, such as cell adhesion, migration, and signal transduction. Due to the specific expression and differential localization of plectin in cancer, most researchers focus on the role of plectin in cancer, and it has emerged as a potent driver of malignant hallmarks in many human cancers, which provides the possibility for plectin to be widely used as a biomarker and therapeutic target in the early diagnosis and targeted drug delivery of the disease. However, there is still a lack of systematic review on the interaction molecules and mechanism of plectin. Herein, we summarized the structure, expression and function of plectin, and mainly focused on recent studies on the functional and physical interactions between plectin and its interacting molecules, shedding light on the potential of targeting plectin for cancer therapy.
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Affiliation(s)
- Keyu Gao
- Department of Urology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, Jiangsu, China
| | - Zhimin Gao
- Department of Urology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, Jiangsu, China
| | - Mingyi Xia
- Cancer Institute, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China
- Center of Clinical Oncology, The Affiliated Hospital of Xuzhou Medical University, 99 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China
| | - Hailong Li
- Department of Urology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, Jiangsu, China.
| | - Jiehui Di
- Cancer Institute, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.
- Center of Clinical Oncology, The Affiliated Hospital of Xuzhou Medical University, 99 West Huaihai Road, Xuzhou, 221002, Jiangsu, China.
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221004, Jiangsu, China.
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2
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Gundesli H, Kori M, Arga KY. The Versatility of Plectin in Cancer: A Pan-Cancer Analysis on Potential Diagnostic and Prognostic Impacts of Plectin Isoforms. OMICS : A JOURNAL OF INTEGRATIVE BIOLOGY 2023. [PMID: 37262182 DOI: 10.1089/omi.2023.0053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Plectin, encoded by PLEC, is a cytoskeletal and scaffold protein with a number of unique isoforms that act on various cellular functions such as cell adhesion, signal transduction, cancer cell invasion, and migration. While plectin has been shown to display high expression and mislocalization in tumor cells, our knowledge of the biological significance of plectin and its isoforms in tumorigenesis remain limited. In this study, we first performed pathway enrichment analysis to identify cancer hallmark proteins associated with plectin. Then, a pan-cancer analysis was performed using RNA-seq data collected from the Cancer Genome Atlas (TCGA) to detect the mRNA expression levels of PLEC and its transcript isoforms, and the prognostic as well as diagnostic significance of the transcript isoforms was evaluated considering cancer stages. We show here that several tissue specific PLEC isoforms are dysregulated in different cancer types and stages but not the expression of PLEC. Among them, PLEC 1d and PLEC 1f are potential biomarker candidates and call for further translational and personalized medicine research. This study makes a contribution as a stride to unravel the molecular mechanisms underpinning plectin isoforms in cancer development and progression by revealing the potent plectin isoforms in different stages of cancer as potential early cancer detection biomarkers. Importantly, uncovering how plectin isoforms guide malignancy and particular cancer types by comprehensive functional studies might open new avenues toward novel cancer therapeutics.
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Affiliation(s)
- Hulya Gundesli
- Gulhane Faculty of Medicine, University of Health Sciences, Ankara, Turkey
| | - Medi Kori
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
| | - Kazim Yalcin Arga
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, Turkey
- Genetic and Metabolic Diseases Research and Investigation Center, Marmara University, Istanbul, Turkey
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3
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Xu R, He S, Ma D, Liang R, Luo Q, Song G. Plectin Downregulation Inhibits Migration and Suppresses Epithelial Mesenchymal Transformation of Hepatocellular Carcinoma Cells via ERK1/2 Signaling. Int J Mol Sci 2022; 24:ijms24010073. [PMID: 36613521 PMCID: PMC9820339 DOI: 10.3390/ijms24010073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/10/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Plectin, as a cytoskeleton-related protein, is involved in various physiological and pathological processes of many cell types. Studies have found that plectin affects cancer cell invasion and metastasis, but the exact mechanism is not fully understood. In this study, we aim to investigate the role of plectin in the migration of hepatocellular carcinoma (HCC) cells and explore its relevant molecular mechanism. Herein, we found that the expression of plectin in HCC tissue and cells was significantly increased compared with normal liver tissue and cells. After downregulation of plectin, the migration ability of HCC cells was significantly lower than that of the control group. Moreover, the expression of E-cadherin was upregulated and the expression of N-cadherin and vimentin was downregulated, suggesting that plectin downregulation suppresses epithelial mesenchymal transformation (EMT) of HCC cells. Mechanically, we found that plectin downregulation repressed the extracellular signal-regulated kinase 1/2 (ERK1/2) phosphorylation. Activation of ERK1/2 recovered the plectin downregulation-inhibited migration and EMT of HCC cells. Taken together, our results demonstrate that downregulation of plectin inhibits HCC cell migration and EMT through ERK1/2 signaling, which provides a novel prognostic biomarker and potential therapeutic target for HCC.
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Affiliation(s)
| | | | | | | | - Qing Luo
- Correspondence: (Q.L.); (G.S.); Tel.: +86-23-6510-2507 (Q.L. & G.S.)
| | - Guanbin Song
- Correspondence: (Q.L.); (G.S.); Tel.: +86-23-6510-2507 (Q.L. & G.S.)
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4
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Zou Z, Chai Y, Li Q, Lin X, He Q, Xiong Q. Establishment of lactate-metabolism-related signature to predict prognosis and immunotherapy response in patients with colon adenocarcinoma. Front Oncol 2022; 12:958221. [PMID: 36185199 PMCID: PMC9515658 DOI: 10.3389/fonc.2022.958221] [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: 05/31/2022] [Accepted: 07/25/2022] [Indexed: 11/13/2022] Open
Abstract
The outcome of colon adenocarcinoma (COAD) patients remains dismal, and lactate metabolism has been characterized to promote tumor development and immune evasion. Based on the above background, it is worthwhile to explore novel prognostic and therapeutic biomarkers for COAD patients from the aspect of lactate metabolism. Above all, 228 available lactate-metabolism-related genes (LMRGs) were acquired, and the landscape of copy number variation and the expression difference of mRNA levels between colon normal and tumor samples were investigated among these LMRGs. Importantly, eight overall survival (OS)-involved LMRGs were then distinguished by means of univariate Cox regression analysis in both GSE40967 and TCGA-COAD data sets. Subsequently, prognostic risk scores were established, integrating seven OS-related LMRGs by LASSO Cox regression analysis in the GSE40967 set, and then verified in the TCGA-COAD cohort. From the comprehensive analyses, COAD patients with high risk had comparatively more inferior survival probability in all populations of the study, and they tended to have more severe clinicopathological features with the risk score increasing. Moreover, by integrating age, AJCC T and pathological stage, and risk score, we constructed a prognostic nomogram that demonstrated great prediction effectiveness for OS of COAD patients. Furthermore, the potential effect of various risk score on tumor immune was assessed from enrichment of immune-related pathways, tumor-infiltrating immune cells, and expression levels of immune checkpoints separately. We could draw a conclusion that COAD patients with higher lactate-metabolism-related risk scores may acquire an immunosuppressive tumor microenvironment, which subsequently led to immune escapes and poor prognoses. Conclusively, all findings in the present study illustrate a great prognostic value of the lactate-metabolism-related risk signature, providing more in-depth insights into the indispensable function of lactate metabolism in prognosis and tumor immunity of COAD.
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Affiliation(s)
- Zhengrong Zou
- Department of Emergency Trauma Center, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Yongjie Chai
- Department of Anorectal Surgery, Zhucheng People’s Hospital, Zhucheng, China
| | - Qi Li
- Basic Medicine Department of Chuxiong Medical and Pharmaceutical College, Chuxiong, China
| | - Xuan Lin
- Department of Emergency Trauma Center, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Qingfang He
- Department of General Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Qiusheng Xiong
- Department of General Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- *Correspondence: Qiusheng Xiong,
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5
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Gong J, Zhao L, Yang J, Zhu M, Zhao J. [99mTc]Tc-Labeled Plectin-Targeting Peptide as a Novel SPECT Probe for Tumor Imaging. Pharmaceutics 2022; 14:pharmaceutics14050996. [PMID: 35631582 PMCID: PMC9146797 DOI: 10.3390/pharmaceutics14050996] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/19/2022] [Accepted: 04/26/2022] [Indexed: 01/27/2023] Open
Abstract
Certain receptors are often overexpressed during tumor occurrence and development and closely correlate with carcinogenesis. Owing to its overexpression on the cell membrane and cytoplasm of various tumors, plectin, which is involved in tumor proliferation, migration, and invasion, has been viewed as a promising target for cancer imaging. Hence, plectin-targeting agents have great potential as imaging probes for tumor diagnosis. In this study, we developed a [99mTc]Tc-labeled plectin-targeted peptide (PTP) as a novel single-photon emission computed tomography (SPECT) probe for tumor imaging and investigated its pharmacokinetics, biodistribution, and targeting ability in several types of tumor-bearing mouse models. The PTP had good biocompatibility and targeting ability to tumor cells in vitro and could be readily labeled with [99mTc]Tc after modification with the bifunctional chelator 6-hydrazino nicotinamide (HYNIC). Furthermore, the prepared [99mTc]Tc-labeled PTP ([99mTc]Tc-HYNIC-PTP) showed high radiochemical purity and excellent stability in vitro. In addition, favorable biodistribution, fast blood clearance, and clear accumulation of [99mTc]Tc-HYNIC-PTP in several types of tumors were observed, with a good correlation between tumor uptake and plectin expression levels. These results indicate the potential of [99mTc]Tc-HYNIC-PTP as a novel SPECT probe for tumor imaging.
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Affiliation(s)
- Jiali Gong
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China; (J.G.); (L.Z.)
| | - Lingzhou Zhao
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China; (J.G.); (L.Z.)
| | - Jiqin Yang
- Department of Nuclear Medicine, General Hospital of Ningxia Medical University, Yinchuan 750004, China
- Correspondence: (J.Y.); (M.Z.); (J.Z.); Tel.: +86-21-3779-8352 (J.Z.)
| | - Meilin Zhu
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
- Correspondence: (J.Y.); (M.Z.); (J.Z.); Tel.: +86-21-3779-8352 (J.Z.)
| | - Jinhua Zhao
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China; (J.G.); (L.Z.)
- Correspondence: (J.Y.); (M.Z.); (J.Z.); Tel.: +86-21-3779-8352 (J.Z.)
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6
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A novel peptidomimetic therapeutic for selective suppression of lung cancer stem cells over non-stem cancer cells. Bioorg Chem 2021; 116:105340. [PMID: 34530236 DOI: 10.1016/j.bioorg.2021.105340] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/17/2021] [Accepted: 09/05/2021] [Indexed: 12/21/2022]
Abstract
Cancers are highly heterogeneous and typically contain a small subset of drug-resisting cells called tumor initiating cells or cancer stem cells (CSCs). CSCs can self-renew, divide asymmetrically, and often cause tumor invasion and metastasis. Therefore, treatments specifically targeting CSCs are critical to improve patient survival. Recently, we identified a highly specific peptidomimetic (peptoid - PCS2) that selectively binds to the CSC subpopulation of lung cancer over the remaining cancer cells (non-CSCs). Subsequently, we identified plectin as the target of PCS2. Plectin is an intracellular structural protein, which is involved in tumor invasion and metastasis when it appears on cell surface. While PCS2 monomer did not display any anti-cancer activity, we designed a series of homo-dimeric versions of PCS2, and identified PCS2D1.2 optimized homo-dimer that displayed highly specific cytotoxicity towards CSCs over non-CSCs. PCS2D1.2 effectively blocked the in vitro colony formation and cell migration, hallmarks of CSCs. Furthermore, PCS2D1.2 reduced the in vivo tumor formation. In both in vitro and in vivo studies, PCS2D1.2 effectively reduced plectin expression and/or plectin-rich CSCs, but had no effect on non-CSCs. Therefore, PCS2D1.2 has the potential to be developed as a highly CSC specific drug candidate, which can be used in combination with current anti-cancer drugs.
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7
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Perez SM, Brinton LT, Kelly KA. Plectin in Cancer: From Biomarker to Therapeutic Target. Cells 2021; 10:2246. [PMID: 34571895 PMCID: PMC8469460 DOI: 10.3390/cells10092246] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 12/17/2022] Open
Abstract
The cytolinker and scaffolding protein, plectin, has emerged as a potent driver of malignant hallmarks in many human cancers due to its involvement in various cellular activities contributing to tumorigenesis, including cancer cell proliferation, adhesion, migration, invasion, and signal transduction. Evidence shows that beyond plectin's diverse protein interactome, its cancer-specific mislocalization to the cell surface enables its function as a potent oncoprotein. As such, therapeutic targeting of plectin, its protein interactors, and, in particular, cancer-specific plectin (CSP) presents an attractive opportunity to impede carcinogenesis directly. Here, we report on plectin's differential gene and protein expression in cancer, explore its mutational profile, and discuss the current understanding of plectin's and CSP's biological function in cancer. Moreover, we review the landscape of plectin as a prognostic marker, diagnostic biomarker, and target for imaging and therapeutic modalities. We highlight how, beyond their respective biological importance, plectin's common overexpression in cancer and CSP's cancer-specific bioavailability underscore their potential as high-value druggable targets. We discuss how recent evidence of the potent anti-cancer effects of CSP therapeutic targeting opens the door for cell-surface mislocalized proteins as novel therapeutic targets.
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Affiliation(s)
- Samantha M. Perez
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA;
| | | | - Kimberly A. Kelly
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA;
- ZielBio, Inc., Charlottesville, VA 22903, USA
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8
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A Novel Monoclonal Antibody Targeting Cancer-Specific Plectin Has Potent Antitumor Activity in Ovarian Cancer. Cells 2021; 10:cells10092218. [PMID: 34571866 PMCID: PMC8466582 DOI: 10.3390/cells10092218] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/19/2021] [Accepted: 08/24/2021] [Indexed: 01/25/2023] Open
Abstract
Cancer-specific plectin (CSP) is a pro-tumorigenic protein selectively expressed on the cell surface of major cancers, including ovarian cancer (OC). Despite its assessable localization, abundance, and functional significance, the therapeutic efficacy of targeting CSP remains unexplored. Here, we generated and investigated the anticancer effects of a novel CSP-targeting monoclonal antibody, 1H11, in OC models. Its therapeutic efficacy as a monotherapy and in combination with chemotherapy was evaluated in vitro using two OC cell lines and in vivo by a subcutaneous ovarian cancer model. 1H11 demonstrated rapid internalization and high affinity and specificity for both human and murine CSP. Moreover, 1H11 induced significant and selective cytotoxicity (EC50 = 260 nM), G0/G1 arrest, and decreased OC cell migration. Mechanistically, these results are associated with increased ROS levels and reduced activation of the JAK2-STAT3 pathway. In vivo, 1H11 decreased Ki67 expression, induced 65% tumor growth inhibition, and resulted in 30% tumor necrosis. Moreover, 1H11 increased chemosensitivity to cisplatin resulting in 60% greater tumor growth inhibition compared to cisplatin alone. Taken together, CSP-targeting with 1H11 exhibits potent anticancer activity against ovarian cancer and is deserving of future clinical development.
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9
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Wiche G. Plectin-Mediated Intermediate Filament Functions: Why Isoforms Matter. Cells 2021; 10:cells10082154. [PMID: 34440923 PMCID: PMC8391331 DOI: 10.3390/cells10082154] [Citation(s) in RCA: 15] [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: 08/03/2021] [Revised: 08/13/2021] [Accepted: 08/17/2021] [Indexed: 11/26/2022] Open
Abstract
This essay focuses on the role of plectin and its various isoforms in mediating intermediate filament (IF) network functions. It is based on previous studies that provided comprehensive evidence for a concept where plectin acts as an IF recruiter, and plectin-mediated IF networking and anchoring are key elements in IF function execution. Here, plectin’s global role as modulator of IF functionality is viewed from different perspectives, including the mechanical stabilization of IF networks and their docking platforms, contribution to cellular viscoelasticity and mechanotransduction, compartmentalization and control of the actomyosin machinery, connections to the microtubule system, and mechanisms and specificity of isoform targeting. Arguments for IF networks and plectin acting as mutually dependent partners are also given. Lastly, a working model is presented that describes a unifying mechanism underlying how plectin–IF networks mechanically control and propagate actomyosin-generated forces, affect microtubule dynamics, and contribute to mechanotransduction.
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Affiliation(s)
- Gerhard Wiche
- Max Perutz Laboratories, Department of Biochemistry and Cell Biology, University of Vienna, 1030 Vienna, Austria
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10
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Wesley T, Berzins S, Kannourakis G, Ahmed N. The attributes of plakins in cancer and disease: perspectives on ovarian cancer progression, chemoresistance and recurrence. Cell Commun Signal 2021; 19:55. [PMID: 34001250 PMCID: PMC8127266 DOI: 10.1186/s12964-021-00726-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 02/20/2021] [Indexed: 02/06/2023] Open
Abstract
The plakin family of cytoskeletal proteins play an important role in cancer progression yet are under-studied in cancer, especially ovarian cancer. These large cytoskeletal proteins have primary roles in the maintenance of cytoskeletal integrity but are also associated with scaffolds of intermediate filaments and hemidesmosomal adhesion complexes mediating signalling pathways that regulate cellular growth, migration, invasion and differentiation as well as stress response. Abnormalities of plakins, and the closely related spectraplakins, result in diseases of the skin, striated muscle and nervous tissue. Their prevalence in epithelial cells suggests that plakins may play a role in epithelial ovarian cancer progression and recurrence. In this review article, we explore the roles of plakins, particularly plectin, periplakin and envoplakin in disease-states and cancers with emphasis on ovarian cancer. We discuss the potential role the plakin family of proteins play in regulating cancer cell growth, survival, migration, invasion and drug resistance. We highlight potential relationships between plakins, epithelial-mesenchymal transition (EMT) and cancer stem cells (CSCs) and discuss how interaction of these processes may affect ovarian cancer progression, chemoresistance and ultimately recurrence. We propose that molecular changes in the expression of plakins leads to the transition of benign ovarian tumours to carcinomas, as well as floating cellular aggregates (commonly known as spheroids) in the ascites microenvironment, which may contribute to the sustenance and progression of the disease. In this review, attempts have been made to understand the crucial changes in plakin expression in relation to progression and recurrence of ovarian cancer. Video Abstract
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Affiliation(s)
- Tamsin Wesley
- Fiona Elsey Cancer Research Institute, Ballarat Technology Central Park, Suites 23-26, 106-110 Lydiard Street South, Ballarat, VIC, 3353, Australia.,School of Science, Psychology and Sport, Federation University Australia, Ballarat, VIC, 3010, Australia
| | - Stuart Berzins
- Fiona Elsey Cancer Research Institute, Ballarat Technology Central Park, Suites 23-26, 106-110 Lydiard Street South, Ballarat, VIC, 3353, Australia.,School of Science, Psychology and Sport, Federation University Australia, Ballarat, VIC, 3010, Australia
| | - George Kannourakis
- Fiona Elsey Cancer Research Institute, Ballarat Technology Central Park, Suites 23-26, 106-110 Lydiard Street South, Ballarat, VIC, 3353, Australia.,School of Science, Psychology and Sport, Federation University Australia, Ballarat, VIC, 3010, Australia
| | - Nuzhat Ahmed
- Fiona Elsey Cancer Research Institute, Ballarat Technology Central Park, Suites 23-26, 106-110 Lydiard Street South, Ballarat, VIC, 3353, Australia. .,School of Science, Psychology and Sport, Federation University Australia, Ballarat, VIC, 3010, Australia. .,Department of Obstetrics and Gynaecology, University of Melbourne, Melbourne, VIC, 3052, Australia. .,Centre for Reproductive Health, The Hudson Institute of Medical Research and Department of Translational Medicine, Monash University, Melbourne, VIC, 3168, Australia.
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11
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The Expressions and Mechanisms of Sarcomeric Proteins in Cancers. DISEASE MARKERS 2020; 2020:8885286. [PMID: 32670437 PMCID: PMC7346232 DOI: 10.1155/2020/8885286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/07/2020] [Accepted: 06/13/2020] [Indexed: 02/07/2023]
Abstract
The sarcomeric proteins control the movement of cells in diverse species, whereas the deregulation can induce tumours in model organisms and occurs in human carcinomas. Sarcomeric proteins are recognized as oncogene and related to tumor cell metastasis. Recent insights into their expressions and functions have led to new cancer therapeutic opportunities. In this review, we appraise the evidence for the sarcomeric proteins as cancer genes and discuss cancer-relevant biological functions, potential mechanisms by which sarcomeric proteins activity is altered in cancer.
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12
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Matsubara T, Yaginuma T, Addison WN, Fujita Y, Watanabe K, Yoshioka I, Hikiji H, Maki K, Baron R, Kokabu S. Plectin stabilizes microtubules during osteoclastic bone resorption by acting as a scaffold for Src and Pyk2. Bone 2020; 132:115209. [PMID: 31866495 DOI: 10.1016/j.bone.2019.115209] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 12/18/2019] [Accepted: 12/18/2019] [Indexed: 10/25/2022]
Abstract
Osteoclasts are multinuclear cells which maintain bone homeostasis by resorbing bone. During bone resorption, osteoclasts attach to the bone matrix via a sealing zone formed by an actin ring. Rous sarcoma oncogene (Src) is essential for actin ring formation and bone resorption. Recently, we demonstrated that plectin, a cytolinker protein, is a Src-binding protein in osteoclasts. However, the function of plectin in osteoclasts remains unknown. In this study, we demonstrated that shRNA knockdown of plectin in RAW 264.7 cells resulted in tartrate resistant acid phosphatase positive multinuclear cells (TRAP (+) MNCs) with impaired actin ring formation and bone resorption activity. Moreover, we found that in plectin-silenced TRAP (+) MNCs, Src and protein tyrosine kinase 2 beta (Pyk2), two critical kinases in osteoclastic bone resorption, were inactivated and microtubule polarity was disturbed. These results suggest that plectin plays a critical role in osteoclast biology by acting as a scaffold to facilitate Src and Pyk2 activation during microtubule organization.
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Affiliation(s)
- Takuma Matsubara
- Division of Molecular Signaling and Biochemistry, Department of Health Promotion, Kyushu Dental University, 2-6-1, Manazuru, Kitakyushu, Fukuoka 8038580, Japan.
| | - Tatsuki Yaginuma
- Division of Molecular Signaling and Biochemistry, Department of Health Promotion, Kyushu Dental University, 2-6-1, Manazuru, Kitakyushu, Fukuoka 8038580, Japan; Division of Oral Medicine, Department of Physical Functions, Kyushu Dental University, Kitakyushu, Japan
| | - William N Addison
- Division of Molecular Signaling and Biochemistry, Department of Health Promotion, Kyushu Dental University, 2-6-1, Manazuru, Kitakyushu, Fukuoka 8038580, Japan
| | - Yuko Fujita
- Division of Developmental Stomatognathic Function Science, Department of Health Promotion, Kyushu Dental University, 2-6-1, Manazuru, Kitakyushu, Fukuoka 8038580, Japan
| | - Kouji Watanabe
- Division of Developmental Stomatognathic Function Science, Department of Health Promotion, Kyushu Dental University, 2-6-1, Manazuru, Kitakyushu, Fukuoka 8038580, Japan
| | - Izumi Yoshioka
- Division of Oral Medicine, Department of Physical Functions, Kyushu Dental University, Kitakyushu, Japan
| | - Hisako Hikiji
- School of Oral Health Sciences, Kyushu Dental University, 2-6-1, Manazuru, Kitakyushu, Fukuoka 8038580, Japan
| | - Kenshi Maki
- Division of Developmental Stomatognathic Function Science, Department of Health Promotion, Kyushu Dental University, 2-6-1, Manazuru, Kitakyushu, Fukuoka 8038580, Japan
| | - Roland Baron
- Department of Medicine, Harvard Medical School and Division of Bone and Mineral Research, Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, 188 Longwood Ave., Boston, MA 02115, USA
| | - Shoichiro Kokabu
- Division of Molecular Signaling and Biochemistry, Department of Health Promotion, Kyushu Dental University, 2-6-1, Manazuru, Kitakyushu, Fukuoka 8038580, Japan
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13
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Raymond AC, Gao B, Girard L, Minna JD, Gomika Udugamasooriya D. Unbiased peptoid combinatorial cell screen identifies plectin protein as a potential biomarker for lung cancer stem cells. Sci Rep 2019; 9:14954. [PMID: 31628412 PMCID: PMC6802198 DOI: 10.1038/s41598-019-51004-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 09/20/2019] [Indexed: 01/16/2023] Open
Abstract
Tumors often contain a small subset of drug-resisting, self-renewing, and highly metastatic cells called tumor initiating cells or cancer stem cells (CSCs). To develop new approaches to detecting and targeting lung cancer CSCs, we applied an "unbiased" peptoid combinatorial cell screen to identify highly specific ligands that bind a CSC subpopulation of non-small cell lung cancer cells (defined by Aldefluor positivity), but not the remaining aldefluor negative cancer cells from the same preclinical model. One of the 'hit' peptoids bound to plectin, a structural protein, predominantly expressed intracellularly, but whose localization on the cell surface is linked to tumor invasion and metastasis. Our studies show both genotypic and phenotypic correlations between plectin and lung CSCs, as well as association of high plectin mRNA expression with poor patient survival in lung adenocarcinoma, potentially identifying plectin as a biomarker for lung CSCs.
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Affiliation(s)
- Aaron C Raymond
- Department of Pharmacological & Pharmaceutical Sciences, University of Houston, 4849 Calhoun Rd, Houston, TX, 77204-5037, USA
| | - Boning Gao
- Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, TX, 75390, USA
- Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, TX, 75390, USA
- Departments of Pharmacology, University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Luc Girard
- Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, TX, 75390, USA
- Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, TX, 75390, USA
- Departments of Pharmacology, University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - John D Minna
- Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, TX, 75390, USA
- Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, TX, 75390, USA
- Departments of Pharmacology, University of Texas Southwestern Medical Center, 6000 Harry Hines Blvd., Dallas, TX, 75390, USA
- Internal Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - D Gomika Udugamasooriya
- Department of Pharmacological & Pharmaceutical Sciences, University of Houston, 4849 Calhoun Rd, Houston, TX, 77204-5037, USA.
- Department of Cancer Systems Imaging, MD Anderson Cancer Center, 1881 East Road, Houston, TX, 77030-4009, USA.
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14
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Hu L, Huang Z, Wu Z, Ali A, Qian A. Mammalian Plakins, Giant Cytolinkers: Versatile Biological Functions and Roles in Cancer. Int J Mol Sci 2018; 19:ijms19040974. [PMID: 29587367 PMCID: PMC5979291 DOI: 10.3390/ijms19040974] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 03/18/2018] [Accepted: 03/20/2018] [Indexed: 01/07/2023] Open
Abstract
Cancer is a highly lethal disease that is characterized by aberrant cell proliferation, migration, and adhesion, which are closely related to the dynamic changes of cytoskeletons and cytoskeletal-adhesion. These will further result in cell invasion and metastasis. Plakins are a family of giant cytolinkers that connect cytoskeletal elements with each other and to junctional complexes. With various isoforms composed of different domain structures, mammalian plakins are broadly expressed in numerous tissues. They play critical roles in many cellular processes, including cell proliferation, migration, adhesion, and signaling transduction. As these cellular processes are key steps in cancer development, mammalian plakins have in recent years attracted more and more attention for their potential roles in cancer. Current evidence shows the importance of mammalian plakins in various human cancers and demonstrates mammalian plakins as potential biomarkers for cancer. Here, we introduce the basic characteristics of mammalian plakins, review the recent advances in understanding their biological functions, and highlight their roles in human cancers, based on studies performed by us and others. This will provide researchers with a comprehensive understanding of mammalian plakins, new insights into the development of cancer, and novel targets for cancer diagnosis and therapy.
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Affiliation(s)
- Lifang Hu
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Zizhan Huang
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Zixiang Wu
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Arshad Ali
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Airong Qian
- Laboratory for Bone Metabolism, Key Laboratory for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
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15
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Chaudhari PR, Charles SE, D'Souza ZC, Vaidya MM. Hemidesmosomal linker proteins regulate cell motility, invasion and tumorigenicity in oral squamous cell carcinoma derived cells. Exp Cell Res 2017; 360:125-137. [PMID: 28867478 DOI: 10.1016/j.yexcr.2017.08.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 07/29/2017] [Accepted: 08/24/2017] [Indexed: 12/18/2022]
Abstract
BPAG1e and Plectin are hemidesmosomal linker proteins which anchor intermediate filament proteins to the cell surface through β4 integrin. Recent reports indicate that these proteins play a role in various cellular processes apart from their known anchoring function. However, the available literature is inconsistent. Further, the previous study from our laboratory suggested that Keratin8/18 pair promotes cell motility and tumor progression by deregulating β4 integrin signaling in oral squamous cell carcinoma (OSCC) derived cells. Based on these findings, we hypothesized that linker proteins may have a role in neoplastic progression of OSCC. Downregulation of hemidesmosomal linker proteins in OSCC derived cells resulted in reduced cell migration accompanied by alterations in actin organization. Further, decreased MMP9 activity led to reduced cell invasion in linker proteins knockdown cells. Moreover, loss of these proteins resulted in reduced tumorigenic potential. SWATH analysis demonstrated upregulation of N-Myc downstream regulated gene 1 (NDRG1) in linker proteins downregulated cells as compared to vector control cells. Further, the defects in phenotype upon linker proteins ablation were rescued upon loss of NDRG1 in linker proteins knockdown background. These data together indicate that hemidesmosomal linker proteins regulate cell motility, invasion and tumorigenicity possibly through NDRG1 in OSCC derived cells.
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Affiliation(s)
- Pratik Rajeev Chaudhari
- Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre (TMC), Kharghar, Navi Mumbai 410210, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400085, India
| | - Silvania Emlit Charles
- Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre (TMC), Kharghar, Navi Mumbai 410210, India
| | - Zinia Charlotte D'Souza
- Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre (TMC), Kharghar, Navi Mumbai 410210, India
| | - Milind Murlidhar Vaidya
- Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre (TMC), Kharghar, Navi Mumbai 410210, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400085, India.
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16
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Matsubara T, Kinbara M, Maeda T, Yoshizawa M, Kokabu S, Takano Yamamoto T. Regulation of osteoclast differentiation and actin ring formation by the cytolinker protein plectin. Biochem Biophys Res Commun 2017; 489:472-476. [DOI: 10.1016/j.bbrc.2017.05.174] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 05/29/2017] [Indexed: 11/25/2022]
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17
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Meier SM, Kreutz D, Winter L, Klose MHM, Cseh K, Weiss T, Bileck A, Alte B, Mader JC, Jana S, Chatterjee A, Bhattacharyya A, Hejl M, Jakupec MA, Heffeter P, Berger W, Hartinger CG, Keppler BK, Wiche G, Gerner C. An Organoruthenium Anticancer Agent Shows Unexpected Target Selectivity For Plectin. Angew Chem Int Ed Engl 2017; 56:8267-8271. [DOI: 10.1002/anie.201702242] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Indexed: 01/18/2023]
Affiliation(s)
- Samuel M. Meier
- Institut für Analytische Chemie; Universität Wien; Währinger Strasse 38 1090 Wien Austria
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
| | - Dominique Kreutz
- Institut für Analytische Chemie; Universität Wien; Währinger Strasse 38 1090 Wien Austria
| | - Lilli Winter
- Department of Biochemistry and Cell Biology MFPL; Universität Wien; Dr.-Bohr-Gasse 9 1030 Vienna Austria
| | - Matthias H. M. Klose
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
- Institut für Anorganische Chemie; Universität Wien; Austria
| | - Klaudia Cseh
- Institut für Anorganische Chemie; Universität Wien; Austria
| | | | - Andrea Bileck
- Institut für Analytische Chemie; Universität Wien; Währinger Strasse 38 1090 Wien Austria
| | - Beatrix Alte
- Institut für Krebsforschung; Medizinische Universität Wien; Austria
| | - Johanna C. Mader
- Institut für Analytische Chemie; Universität Wien; Währinger Strasse 38 1090 Wien Austria
| | - Samir Jana
- Department für Zoology; University of Calcutta; 35 Ballygunge Circular Road India
| | - Annesha Chatterjee
- Department für Zoology; University of Calcutta; 35 Ballygunge Circular Road India
| | | | - Michaela Hejl
- Institut für Anorganische Chemie; Universität Wien; Austria
| | - Michael A. Jakupec
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
- Institut für Anorganische Chemie; Universität Wien; Austria
| | - Petra Heffeter
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
- Institut für Krebsforschung; Medizinische Universität Wien; Austria
| | - Walter Berger
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
- Institut für Krebsforschung; Medizinische Universität Wien; Austria
| | | | - Bernhard K. Keppler
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Austria
- Institut für Anorganische Chemie; Universität Wien; Austria
| | - Gerhard Wiche
- Department of Biochemistry and Cell Biology MFPL; Universität Wien; Dr.-Bohr-Gasse 9 1030 Vienna Austria
| | - Christopher Gerner
- Institut für Analytische Chemie; Universität Wien; Währinger Strasse 38 1090 Wien Austria
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18
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Meier SM, Kreutz D, Winter L, Klose MHM, Cseh K, Weiss T, Bileck A, Alte B, Mader JC, Jana S, Chatterjee A, Bhattacharyya A, Hejl M, Jakupec MA, Heffeter P, Berger W, Hartinger CG, Keppler BK, Wiche G, Gerner C. Ein Organoruthenium-Tumortherapeutikum mit unerwartet hoher Selektivität für Plectin. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702242] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Samuel M. Meier
- Institut für Analytische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
| | - Dominique Kreutz
- Institut für Analytische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Lilli Winter
- Department of Biochemistry and Cell Biology MFPL; Universität Wien; Österreich
| | - Matthias H. M. Klose
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
- Institut für Anorganische Chemie; Universität Wien; Österreich
| | - Klaudia Cseh
- Institut für Anorganische Chemie; Universität Wien; Österreich
| | | | - Andrea Bileck
- Institut für Analytische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Beatrix Alte
- Institut für Krebsforschung; Medizinische Universität Wien; Österreich
| | - Johanna C. Mader
- Institut für Analytische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Samir Jana
- Department of Zoology; University of Calcutta; Indien
| | | | | | - Michaela Hejl
- Institut für Anorganische Chemie; Universität Wien; Österreich
| | - Michael A. Jakupec
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
- Institut für Anorganische Chemie; Universität Wien; Österreich
| | - Petra Heffeter
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
- Institut für Krebsforschung; Medizinische Universität Wien; Österreich
| | - Walter Berger
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
- Institut für Krebsforschung; Medizinische Universität Wien; Österreich
| | | | - Bernhard K. Keppler
- Forschungsplattform “Translational Cancer Therapy Research”; Universität Wien und Medizinische Universität Wien; Österreich
- Institut für Anorganische Chemie; Universität Wien; Österreich
| | - Gerhard Wiche
- Department of Biochemistry and Cell Biology MFPL; Universität Wien; Österreich
| | - Christopher Gerner
- Institut für Analytische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
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19
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Dokanehiifard S, Yasari A, Najafi H, Jafarzadeh M, Nikkhah M, Mowla SJ, Soltani BM. A novel microRNA located in the TrkC gene regulates the Wnt signaling pathway and is differentially expressed in colorectal cancer specimens. J Biol Chem 2017; 292:7566-7577. [PMID: 28100780 DOI: 10.1074/jbc.m116.760710] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 01/18/2017] [Indexed: 01/12/2023] Open
Abstract
Tropomyosin receptor kinase C (TrkC) is involved in cell survival, apoptosis, differentiation, and tumorigenesis. TrkC diverse functions might be attributed to the hypothetical non-coding RNAs embedded within the gene. Using bioinformatics approaches, a novel microRNA named TrkC-miR2 was predicted within the TrkC gene capable of regulating the Wnt pathway. For experimental verification of this microRNA, the predicted TrkC-premir2 sequence was overexpressed in SW480 cells, which led to the detection of two mature TrkC-miR2 isomiRs, and their endogenous forms were detected in human cell lines as well. Later, an independent promoter was deduced for TrkC-miR2 after the treatment of HCT116 cells with 5-azacytidine, which resulted in differential expression of TrkC-miR2 and TrkC host gene. RT-quantitative PCR and luciferase assays indicated that the APC2 gene is targeted by TrkC-miR2, and Wnt signaling is up-regulated. Also, Wnt inhibition by using small molecules along with TrkC-miR2 overexpression and TOP/FOP flash assays confirmed the positive effect of TrkC-miR2 on the Wnt pathway. Consistently, TrkC-miR2 overexpression promoted SW480 cell survival, which was detected by flow cytometry, MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assays, and crystal violate analysis. RT-qPCR analysis revealed that TrkC-miR2 is significantly up-regulated (∼70 times) in colorectal tumor tissues compared with their normal pairs. Moreover, the TrkC-miR2 expression level discriminated grades of tumor malignancies, which was consistent with its endogenous levels in HCT116, HT29, and SW480 colorectal cancer cell lines. Finally, an opposite expression pattern was observed for TrkC-miR2 and the APC2 gene in colorectal cancer specimens. In conclusion, here we introduce TrkC-miR2 as a novel regulator of Wnt signaling, which might be a candidate oncogenic colorectal cancer biomarker.
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Affiliation(s)
- Sadat Dokanehiifard
- From the Department of Molecular Genetics, Faculty of Biological Sciences and
| | - Atena Yasari
- From the Department of Molecular Genetics, Faculty of Biological Sciences and
| | - Hadi Najafi
- From the Department of Molecular Genetics, Faculty of Biological Sciences and
| | - Meisam Jafarzadeh
- From the Department of Molecular Genetics, Faculty of Biological Sciences and
| | - Maryam Nikkhah
- Department of Nano-Biotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran 111-14115
| | - Seyed Javad Mowla
- From the Department of Molecular Genetics, Faculty of Biological Sciences and
| | - Bahram M Soltani
- From the Department of Molecular Genetics, Faculty of Biological Sciences and
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20
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Genomic profiling of invasive melanoma cell lines by array comparative genomic hybridization. Melanoma Res 2017; 26:100-7. [PMID: 26656572 DOI: 10.1097/cmr.0000000000000227] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Malignant melanoma is one of the most aggressive human cancers. Invasion of cells is the first step in metastasis, resulting in cell migration through tissue compartments. We aimed to evaluate genomic alterations specifically associated with the invasive characteristics of melanoma cells. Matrigel invasion assays were used to determine the invasive properties of cell lines that originated from primary melanomas. Array comparative genomic hybridization analyses were carried out to define the chromosome copy number alterations (CNAs). Several recurrent CNAs were identified by array comparative genomic hybridization that affected melanoma-related genes. Invasive primary cell lines showed high frequencies of CNAs, including the loss of 7q and gain of 12q chromosomal regions targeting PTPN12, ADAM22, FZD1, TFPI2, GNG11, COL1A2, SMURF1, VGF, RELN and GLIPR1 genes. Gain of the GDNF (5p13.1), GPAA1, PLEC and SHARPIN (8q24.3) genes was significantly more frequent in invasive cell lines compared with the noninvasive ones. Importantly, copy number gains of these genes were also found in cell lines that originated from metastases, suggesting their role in melanoma metastasis formation. The present study describes genomic differences between invasive and noninvasive melanoma cell lines that may contribute toward the aggressive phenotype of human melanoma cells.
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21
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Lim B, Mun J, Kim JH, Kim CW, Roh SA, Cho DH, Kim YS, Kim SY, Kim JC. Genome-wide mutation profiles of colorectal tumors and associated liver metastases at the exome and transcriptome levels. Oncotarget 2016; 6:22179-90. [PMID: 26109429 PMCID: PMC4673155 DOI: 10.18632/oncotarget.4246] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 05/18/2015] [Indexed: 01/06/2023] Open
Abstract
To characterize the mutation profiles of colorectal cancer (CRC) primary tumors (PTs) and liver metastases (CLMs), we performed both whole-exome and RNA sequencing. Ten significantly mutated genes, including BMI1, CARD11, and NRG1, were found in 34 CRCs with CLMs. We defined three mutation classes (Class 1 to 3) based on the absence or presence of mutations during liver metastasis. Most mutations were classified into Class 1 (shared between PTs and CLMs), suggesting the common clonal origin of PTs and CLMs. Class 1 was more strongly associated with the clinical characteristics of advanced cancer and was more frequently superimposed with chromosomal deletions in CLMs than Class 2 (PT-specific). The integration of exome and RNA sequencing revealed that variant-allele frequencies (VAFs) of mutations in the transcriptome tended to have stronger functional implications than those in the exome. For instance, VAFs of the TP53 and APC mutations in the transcriptome significantly correlated with the expression level of their target genes. Additionally, mutations with high functional impact were enriched with high VAFs in the CLM transcriptomes. We identified 11 mutation-associated splicing events in the CRC transcriptomes. Thus, the integration of the exome and the transcriptome may elucidate the underlying molecular events responsible for CLMs.
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Affiliation(s)
- Byungho Lim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Jihyeob Mun
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,Department of Functional Genomics, University of Science and Technology, Daejeon, Republic of Korea
| | - Jeong-Hwan Kim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Chan Wook Kim
- Department of Surgery, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seon Ae Roh
- Department of Surgery, University of Ulsan College of Medicine, Seoul, Republic of Korea.,Institute of Innovative Cancer Research and Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | - Dong-Hyung Cho
- Institute of Innovative Cancer Research and Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea.,Graduate School of East-West Medical Science, Kyung Hee University, Gyeonggi-do, Republic of Korea
| | - Yong Sung Kim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,Department of Functional Genomics, University of Science and Technology, Daejeon, Republic of Korea.,Institute of Innovative Cancer Research and Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | - Seon-Young Kim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,Department of Functional Genomics, University of Science and Technology, Daejeon, Republic of Korea
| | - Jin Cheon Kim
- Department of Surgery, University of Ulsan College of Medicine, Seoul, Republic of Korea.,Institute of Innovative Cancer Research and Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
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22
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Quantitative proteomics identifies myoferlin as a novel regulator of A Disintegrin and Metalloproteinase 12 in HeLa cells. J Proteomics 2016; 148:94-104. [PMID: 27432471 DOI: 10.1016/j.jprot.2016.07.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 06/27/2016] [Accepted: 07/13/2016] [Indexed: 01/03/2023]
Abstract
UNLABELLED A Disintegrin and Metalloproteinase 12 (ADAM12) is expressed significantly higher in multiple tumors than in normal tissues and has been used as a prognostic marker for the evaluation of cancer progression. Although several ADAM12 substrates have been identified biochemically and its proteolytic function has been explored, the upstream regulators and the interacting proteins have not been systematically investigated. Here, we use immunoprecipitation and mass spectrometry (MS)-based quantitative proteomic approaches to identify 28 interacting partners for the long form of ADAM12 (ADAM12-L) in HeLa cells. Proteins that regulate cell proliferation, invasion, and epithelial to mesenchymal transition are among the identified ADAM12-interacting proteins. Further biochemical experiments discover that the protein level and the stability of ADAM12 are upregulated by one of its interacting proteins, myoferlin. In addition, myoferlin also increases the proteolytic activity of ADAM12, leading to the reduction of an ADAM12 substrate, E-cadherin. This result implies that ADAM12 and its interacting proteins might converge to certain signaling pathways in the regulation of cancer cell progression. The information obtained here might be useful in the development of new strategies for modulating cell proliferation and invasion involved in the regulation between ADAM12 and its interacting partners. MS data are available via ProteomeXchange with identifier PXD003560. BIOLOGICAL SIGNIFICANCE Regulation of the proliferation and invasion of cancer cells is important in cancer treatment. ADAM12 has been found to play important roles in regulating these processes and identification of its interacting partners will improve our understanding of its biological functions and provide basis for functional modulation. Through mass spectrometry-based quantitative proteomic approaches, we identify the interacting partners for ADAM12 in a human cancer cell line and find many proteins that are involved in the proliferation and invasion of cancer cells. A novel regulator, myoferlin, of ADAM12 is discovered and this protein increases ADAM12 expression level, stability, and its enzymatic activity, leading to the reduction of its substrate, E-cadherin, which plays important roles in the regulation of cell adhesion and tumor metastasis. This result provides a connection for two highly expressed proteins in cancer cells and may shed light on the regulation of their biological functions in cancer progression.
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23
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Palaniappan A, Ramar K, Ramalingam S. Computational Identification of Novel Stage-Specific Biomarkers in Colorectal Cancer Progression. PLoS One 2016; 11:e0156665. [PMID: 27243824 PMCID: PMC4887059 DOI: 10.1371/journal.pone.0156665] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/17/2016] [Indexed: 12/19/2022] Open
Abstract
It is well-known that the conversion of normal colon epithelium to adenoma and then to carcinoma stems from acquired molecular changes in the genome. The genetic basis of colorectal cancer has been elucidated to a certain extent, and much remains to be known about the identity of specific cancer genes that are associated with the advancement of colorectal cancer from one stage to the next. Here in this study we attempted to identify novel cancer genes that could underlie the stage-specific progression and metastasis of colorectal cancer. We conducted a stage-based meta-analysis of the voluminous tumor genome-sequencing data and mined using multiple approaches for novel genes driving the progression to stage-II, stage-III and stage-IV colorectal cancer. The consensus of these driver genes seeded the construction of stage-specific networks, which were then analyzed for the centrality of genes, clustering of subnetworks, and enrichment of gene-ontology processes. Our study identified three novel driver genes as hubs for stage-II progression: DYNC1H1, GRIN2A, GRM1. Four novel driver genes were identified as hubs for stage-III progression: IGF1R, CPS1, SPTA1, DSP. Three novel driver genes were identified as hubs for stage-IV progression: GSK3B, GGT1, EIF2B5. We also identified several non-driver genes that appeared to underscore the progression of colorectal cancer. Our study yielded potential diagnostic biomarkers for colorectal cancer as well as novel stage-specific drug targets for rational intervention. Our methodology is extendable to the analysis of other types of cancer to fill the gaps in our knowledge.
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Affiliation(s)
- Ashok Palaniappan
- Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam, Tamil Nadu 603103, India
- * E-mail:
| | - Karthick Ramar
- Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam, Tamil Nadu 603103, India
| | - Satish Ramalingam
- Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam, Tamil Nadu 603103, India
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24
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Lv J, Fan N, Wang Y, Wang X, Gao C. Identification of differentially expressed proteins of normal and cancerous human colorectal tissues by liquid chromatograph-mass spectrometer based on iTRAQ approach. Cancer Invest 2015; 33:420-8. [PMID: 26180943 DOI: 10.3109/07357907.2015.1055757] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Liquid chromatograph-mass spectrometer (LC/MS) based labeled with isobaric mass tags for relative and absolute quantitation (iTRAQ) analyses were performed to identify differentially expressed proteins from normal and cancerous human colorectal tissues. Around 802 proteins were identified, 68 proteins of which were defined as differentially expressed proteins. Bioinformatics analysis indicated that these differentially expressed proteins correlated with several specific cellular processes and pathways which have relationships with pathological changes of colorectal cancer (CRC). EHD2 were selected to verify its expression patterns and localization using western blotting and immunohistochemistry respectively. LC/MS-based iTRAQ proteomic approach would provide new information about the character of CRC.
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Affiliation(s)
- Jingjing Lv
- a 1 Institute of Anal-Colorectal Surgery, No. 150 Central Hospital of Chinese People's Liberation Army , Luoyang, China .,b 2 The Second Military Medical University , Shanghai, China
| | - Naijun Fan
- a 1 Institute of Anal-Colorectal Surgery, No. 150 Central Hospital of Chinese People's Liberation Army , Luoyang, China
| | - Yangkun Wang
- c 3 Department of Pathology, No. 150 Central Hospital of Chinese People's Liberation Army , Luoyang, China
| | - Xiuli Wang
- a 1 Institute of Anal-Colorectal Surgery, No. 150 Central Hospital of Chinese People's Liberation Army , Luoyang, China
| | - Chunfang Gao
- a 1 Institute of Anal-Colorectal Surgery, No. 150 Central Hospital of Chinese People's Liberation Army , Luoyang, China
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25
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Wiche G, Osmanagic-Myers S, Castañón MJ. Networking and anchoring through plectin: a key to IF functionality and mechanotransduction. Curr Opin Cell Biol 2014; 32:21-9. [PMID: 25460778 DOI: 10.1016/j.ceb.2014.10.002] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 09/29/2014] [Accepted: 10/07/2014] [Indexed: 10/25/2022]
Abstract
Intermediate filaments (IFs) are involved in multiple cellular processes that are essential for the maintenance of cell and tissue integrity as well as response and adaption to stress. Mainly through pathological manifestations in patients and the analysis of genetic mouse models, it became evident that cytolinker proteins of the plakin protein family are essential for many of the functions ascribed to IFs. As discussed in this review, one of them, plectin, affects the assembly properties, interaction potential, compartmentalization, and linkage properties of IFs, making it to a key player for IF functionality. The far reaching consequences of IFs not being well-connected for skin and muscular integrity, migration, and mechanotransduction are highlighted.
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Affiliation(s)
- Gerhard Wiche
- Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories, University of Vienna, Vienna, Austria.
| | - Selma Osmanagic-Myers
- Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories, University of Vienna, Vienna, Austria; Department of Medical Biochemistry, Medical University of Vienna, Vienna, Austria
| | - Maria J Castañón
- Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories, University of Vienna, Vienna, Austria
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26
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Sutoh Yoneyama M, Hatakeyama S, Habuchi T, Inoue T, Nakamura T, Funyu T, Wiche G, Ohyama C, Tsuboi S. Vimentin intermediate filament and plectin provide a scaffold for invadopodia, facilitating cancer cell invasion and extravasation for metastasis. Eur J Cell Biol 2014; 93:157-69. [PMID: 24810881 DOI: 10.1016/j.ejcb.2014.03.002] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 03/26/2014] [Accepted: 03/26/2014] [Indexed: 01/17/2023] Open
Abstract
To investigate the molecular mechanisms of cancer metastasis, we have isolated a high-metastatic bladder cancer cell subpopulation from a low-metastatic cell line by using an in vivo selection system. Cells in the subpopulation showed a high ability to form invadopodia, the filamentous actin (F-actin)-based membrane protrusions that play an essential role in cancer cell invasion. Analysis of the gene expression profile revealed that the expression of an intermediate filament (IF) protein, vimentin and a cytoskeletal linker protein, plectin was up-regulated in the high-metastatic subpopulation compared with the low metastatic cell line. Here we report a novel role of vimentin IF and plectin in metastasis. In invasive bladder cancer cells, the vimentin IF-plectin-invadopodia F-actin link was formed. Disruption of this link severely impaired invadopodia formation, reducing the capacities of extracellular matrix degradation, transendothelial migration and metastasis. In addition, the vimentin assembly into the filaments was required for invadopodia formation. Our results suggest that plectin anchoring invadopodia to vimentin IF scaffolds and stabilizes invadopodia, which is a critical molecular process for cancer cell invasion and extravasation for metastasis.
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Affiliation(s)
- Mihoko Sutoh Yoneyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shingo Hatakeyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Tomonori Habuchi
- Department of Urology, Akita University Graduate School of Medicine, Akita 010-8543, Japan
| | - Takamitsu Inoue
- Department of Urology, Akita University Graduate School of Medicine, Akita 010-8543, Japan
| | - Toshiya Nakamura
- Department of Biomedical Sciences, Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Tomihisa Funyu
- Department of Cancer Immunology and Cell Biology, Oyokyo Kidney Research Institute, Hirosaki, Japan
| | - Gerhard Wiche
- Max F. Perutz Laboratories, Department of Biochemistry and Cell Biology, University of Vienna, Vienna 1030, Austria
| | - Chikara Ohyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shigeru Tsuboi
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan; Department of Cancer Immunology and Cell Biology, Oyokyo Kidney Research Institute, Hirosaki, Japan.
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Bouameur JE, Favre B, Borradori L. Plakins, a versatile family of cytolinkers: roles in skin integrity and in human diseases. J Invest Dermatol 2013; 134:885-894. [PMID: 24352042 DOI: 10.1038/jid.2013.498] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 10/16/2013] [Accepted: 10/25/2013] [Indexed: 11/09/2022]
Abstract
The plakin family consists of giant proteins involved in the cross-linking and organization of the cytoskeleton and adhesion complexes. They further modulate several fundamental biological processes, such as cell adhesion, migration, and polarization or signaling pathways. Inherited and acquired defects of plakins in humans and in animal models potentially lead to dramatic manifestations in the skin, striated muscles, and/or nervous system. These observations unequivocally demonstrate the key role of plakins in the maintenance of tissue integrity. Here we review the characteristics of the mammalian plakin members BPAG1 (bullous pemphigoid antigen 1), desmoplakin, plectin, envoplakin, epiplakin, MACF1 (microtubule-actin cross-linking factor 1), and periplakin, highlighting their role in skin homeostasis and diseases.
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Affiliation(s)
- Jamal-Eddine Bouameur
- Departments of Dermatology and Clinical Research, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Bertrand Favre
- Departments of Dermatology and Clinical Research, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland.
| | - Luca Borradori
- Departments of Dermatology and Clinical Research, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
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Gregor M, Osmanagic-Myers S, Burgstaller G, Wolfram M, Fischer I, Walko G, Resch GP, Jörgl A, Herrmann H, Wiche G. Mechanosensing through focal adhesion-anchored intermediate filaments. FASEB J 2013; 28:715-29. [PMID: 24347609 DOI: 10.1096/fj.13-231829] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Integrin-based mechanotransduction involves a complex focal adhesion (FA)-associated machinery that is able to detect and respond to forces exerted either through components of the extracellular matrix or the intracellular contractile actomyosin network. Here, we show a hitherto unrecognized regulatory role of vimentin intermediate filaments (IFs) in this process. By studying fibroblasts in which vimentin IFs were decoupled from FAs, either because of vimentin deficiency (V0) or loss of vimentin network anchorage due to deficiency in the cytolinker protein plectin (P0), we demonstrate attenuated activation of the major mechanosensor molecule FAK and its downstream targets Src, ERK1/2, and p38, as well as an up-regulation of the compensatory feedback loop acting on RhoA and myosin light chain. In line with these findings, we show strongly reduced FA turnover rates in P0 fibroblasts combined with impaired directional migration, formation of protrusions, and up-regulation of "stretched" high-affinity integrin complexes. By exploiting tension-independent conditions, we were able to mechanistically link these defects to diminished cytoskeletal tension in both P0 and V0 cells. Our data provide important new insights into molecular mechanisms underlying cytoskeleton-regulated mechanosensing, a feature that is fundamental for controlled cell movement and tumor progression.
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Affiliation(s)
- Martin Gregor
- 3Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories, University of Vienna, Dr. Bohrgasse 9, A-1030 Vienna, Austria.
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29
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Bouameur JE, Schneider Y, Begré N, Hobbs RP, Lingasamy P, Fontao L, Green KJ, Favre B, Borradori L. Phosphorylation of serine 4,642 in the C-terminus of plectin by MNK2 and PKA modulates its interaction with intermediate filaments. J Cell Sci 2013; 126:4195-207. [PMID: 23843618 DOI: 10.1242/jcs.127779] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Plectin is a versatile cytolinker of the plakin family conferring cell resilience to mechanical stress in stratified epithelia and muscles. It acts as a critical organizer of the cytoskeletal system by tethering various intermediate filament (IF) networks through its C-terminal IF-binding domain (IFBD). Mutations affecting the IFBD cause devastating human diseases. Here, we show that serine 4642, which is located in the extreme C-terminus of plectin, is phosphorylated in different cell lines. Phosphorylation of S4642 decreased the ability of plectin IFBD to associate with various IFs, as assessed by immunofluorescence microscopy and cell fractionation studies, as well as in yeast two-hybrid assays. Plectin phosphorylated at S4642 was reduced at sites of IF network anchorage along cell-substrate contacts in both skin and cultured keratinocytes. Treatment of SK-MEL-2 and HeLa cells with okadaic acid increased plectin S4642 phosphorylation, suggesting that protein phosphatase 2A dephosphorylates this residue. Moreover, plectin S4642 phosphorylation was enhanced after cell treatment with EGF, phorbol ester, sorbitol and 8-bromo-cyclic AMP, as well as during wound healing and protease-mediated cell detachment. Using selective protein kinase inhibitors, we identified two different kinases that modulate the phosphorylation of plectin S4642 in HeLa cells: MNK2, which is downstream of the ERK1/2-dependent MAPK cascade, and PKA. Our study indicates that phosphorylation of S4642 has an important regulatory role in the interaction of plectin with IFs and identifies a novel link between MNK2 and the cytoskeleton.
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Affiliation(s)
- Jamal-Eddine Bouameur
- Department of Clinical Research-Dermatology, Inselspital Bern University Hospital and University of Bern, 3010 Bern, Switzerland
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Castañón MJ, Walko G, Winter L, Wiche G. Plectin-intermediate filament partnership in skin, skeletal muscle, and peripheral nerve. Histochem Cell Biol 2013; 140:33-53. [PMID: 23748243 PMCID: PMC3695321 DOI: 10.1007/s00418-013-1102-0] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2013] [Indexed: 01/13/2023]
Abstract
Plectin is a large, 500-kDa, intermediate filament (IF)-associated protein. It acts as a cytoskeletal crosslinker and signaling scaffold, affecting mechanical as well as dynamic properties of the cytoskeleton. As a member of the plakin family of cytolinker proteins, plectin has a multidomain structure that is responsible for its vast binding portfolio. It not only binds to all types of IFs, actin filaments and microtubules, but also to transmembrane receptors, proteins of the subplasma membrane protein skeleton, components of the nuclear envelope, and several kinases with known roles in migration, proliferation, and energy metabolism of cells. Due to alternative splicing, plectin is expressed as various isoforms with differing N-terminal heads that dictate their differential subcellular targeting. Through specific interactions with other proteins at their target sites and their ability to bind to all types of IFs, plectin molecules provide strategically located IF anchorage sites within the cytoplasm of cells. In this review, we will present an overview of the structural features and functional properties of plectin and discuss recent progress in defining the role of its isoforms in stress-prone tissues and the implicated diseases, with focus on skin, skeletal muscle, and Schwann cells of peripheral nerve.
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Affiliation(s)
- Maria J. Castañón
- Max F. Perutz Laboratories, Department of Biochemistry and Cell Biology, University of Vienna, 1030 Vienna, Austria
| | - Gernot Walko
- Max F. Perutz Laboratories, Department of Biochemistry and Cell Biology, University of Vienna, 1030 Vienna, Austria
- Present Address: Centre for Stem Cells and Regenerative Medicine, King’s College London School of Medicine, 28th Floor, Tower Wing, Guy’s Hospital, Great Maze Pond, London, SE1 9RT UK
| | - Lilli Winter
- Max F. Perutz Laboratories, Department of Biochemistry and Cell Biology, University of Vienna, 1030 Vienna, Austria
- Present Address: Institute of Neuropathology, University Hospital Erlangen, Schwabachanlage 6, 91054 Erlangen, Germany
| | - Gerhard Wiche
- Max F. Perutz Laboratories, Department of Biochemistry and Cell Biology, University of Vienna, 1030 Vienna, Austria
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31
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Burch TC, Watson MT, Nyalwidhe JO. Variable metastatic potentials correlate with differential plectin and vimentin expression in syngeneic androgen independent prostate cancer cells. PLoS One 2013; 8:e65005. [PMID: 23717685 PMCID: PMC3661497 DOI: 10.1371/journal.pone.0065005] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Accepted: 04/24/2013] [Indexed: 12/30/2022] Open
Abstract
Prostate cancer is a clinically heterogeneous disease, ranging from indolent asymptomatic disease to very aggressive metastatic and life threatening forms of the disease. Distant metastasis represents the major lethal cause of prostate cancer. The most critical clinical challenge in the management of the patients is identifying those individuals at risk of developing metastatic disease. To understand the molecular mechanisms of prostate cancer metastasis and identify markers with metastatic potential, we have analyzed protein expression in two syngeneic prostate cancer cells lines PC3-N2 and PC3-ML2 using isobaric tags for relative and absolute quantitation labeling and multi-dimensional protein identification technology liquid chromatography matrix assisted laser desorption ionization tandem mass spectrometry. PC3-N2 is lowly metastatic while PC3-ML2 highly metastatic. A total of 1,756 proteins were identified in the analyses with 130 proteins showing different expression levels (p<0.01) in the two cell lines. Out of these, 68 proteins were found to be significantly up-regulated while 62 are significantly down-regulated in PC3-ML2 cells compared with PC3-N2 cells. The upregulation of plectin and vimentin which were the most significantly differentially expressed were validated by Western blot and their functional relevance with respect to invasion and migration was determined by siRNA gene silencing. To our knowledge, this study is the first to demonstrate that up-regulation of vimentin and plectin expression positively correlates with the invasion and metastasis of androgen-independent PCA.
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Affiliation(s)
- Tanya C. Burch
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
- Leroy T. Canoles Jr. Cancer Research Center, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
| | - Megan T. Watson
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
- Leroy T. Canoles Jr. Cancer Research Center, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
| | - Julius O. Nyalwidhe
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
- Leroy T. Canoles Jr. Cancer Research Center, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
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Abstract
Experiments conducted in the microgravity environment of space are not typically at the forefront of the mind of a cancer biologist. However, space provides physical conditions that are not achievable on Earth, as well as conditions that can be exploited to study mechanisms and pathways that control cell growth and function. Over the past four decades, studies have shown how exposure to microgravity alters biological processes that may be relevant to cancer. In this Review, we explore the influence of microgravity on cell biology, focusing on tumour cells grown in space together with work carried out using models in ground-based investigations.
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33
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Winter L, Wiche G. The many faces of plectin and plectinopathies: pathology and mechanisms. Acta Neuropathol 2013; 125:77-93. [PMID: 22864774 DOI: 10.1007/s00401-012-1026-0] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 07/12/2012] [Accepted: 07/23/2012] [Indexed: 12/20/2022]
Abstract
Plectin, a giant multifunctional cytolinker protein, plays a crucial role in stabilizing and orchestrating intermediate filament networks in cells. Mutations in the human plectin gene result in multiple diseases manifesting with muscular dystrophy, skin blistering, and signs of neuropathy. The most common disease caused by plectin deficiency is epidermolysis bullosa simplex (EBS)-MD, a rare autosomal-recessive skin blistering disorder with late-onset muscular dystrophy. EBS-MD patients and plectin-deficient mice display pathologic desmin-positive protein aggregates, degenerated myofibrils, and mitochondrial abnormalities, the hallmarks of myofibrillar myopathies. In addition to EBS-MD, plectin mutations have been shown to cause EBS-MD with a myasthenic syndrome, limb-girdle muscular dystrophy type 2Q, EBS with pyloric atresia, and EBS-Ogna. This review focuses on clinical and pathological manifestations of these plectinopathies. It addresses especially plectin's role in skeletal muscle, where a loss of muscle fiber integrity and profound changes of myofiber cytoarchitecture are observed in its absence. Furthermore, the highly complex genetic and molecular structure of plectin is discussed; a high number of differentially spliced exons give rise to a variety of different isoforms, which fulfill distinct functions in different cell types and tissues. Plectin's abilities to act as a dynamic organizer of intermediate filament networks and to interact with a multitude of different interaction partners are the basis for its function as a scaffolding platform for proteins involved in signaling. Finally, the article addresses a series of genetically manipulated mouse lines that were generated to serve as powerful models to study functional and molecular consequences of plectin gene defects.
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Affiliation(s)
- Lilli Winter
- Department of Biochemistry and Cell Biology, Max F. Perutz Laboratories, University of Vienna, Dr. Bohrgasse 9, 1030 Vienna, Austria
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