151
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Wawrzynow B, Zylicz A, Zylicz M. Chaperoning the guardian of the genome. The two-faced role of molecular chaperones in p53 tumor suppressor action. Biochim Biophys Acta Rev Cancer 2018; 1869:161-174. [DOI: 10.1016/j.bbcan.2017.12.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/28/2017] [Accepted: 12/29/2017] [Indexed: 12/17/2022]
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152
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Gao C, Li M, Jiang AL, Sun R, Jin HL, Gui HW, Xiao F, Ding XW, Fu ZM, Feng JP. Overexpression of the mitochondrial chaperone tumor necrosis factor receptor-associated protein 1 is associated with the poor prognosis of patients with colorectal cancer. Oncol Lett 2018; 15:5451-5458. [PMID: 29552185 PMCID: PMC5840608 DOI: 10.3892/ol.2018.8042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 10/26/2017] [Indexed: 01/05/2023] Open
Abstract
Tumor necrosis factor receptor-associated protein-1 (TRAP-1), a mitochondrial chaperone, contributes significantly to the progression of cancer. However, the understanding of its involvement in the clinicopathological characteristics and prognosis of colorectal cancer (CRC) remains limited. The aim of the present study was to assess the significance of TRAP-1 expression in CRC. The expression of TRAP-1 was evaluated in corresponding cancerous, paracancerous, lymph node and distant metastatic tissues of 256 cases of CRC by immunohistochemistry. The associations between TRAP-1 expression and the clinicopathological parameters and survival rates of patients was assessed. Out of 256 patients with CRC, TRAP-1 expression was detected in 203 (79.3%). TRAP-1 expression was significantly increased in cancerous tissue compared with that in corresponding paracancerous tissues (P<0.001). Overexpression of TRAP-1 was significantly associated with differentiation (P=0.011), depth of invasion (P=0.006), lymph node metastasis (P<0.001) and tumor-node-metastasis stage (P<0.001). In patients with high TRAP-1 expression, the 5-year overall survival (OS) rate was 38.0%, in contrast to 56.5% in patients with low TRAP-1 expression (P=0.003). Similarly, the 5-year progression-free survival (PFS) was 26.6% for patients with high TRAP-1 expression and 53.3% for patients with low TRAP-1 expression (P<0.001). Multivariate analyses indicated the TRAP-1 expression is an independent prognostic factor for poorer OS [P=0.015; hazard ratio (HR), 1.914] and PFS (P<0.001; HR, 2.534). Thus, TRAP-1 may serve as a potential biomarker for predicting the prognosis of patients with CRC. Specifically, overexpression of TRAP-1 may predict progression and poor survival in cases of CRC.
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Affiliation(s)
- Chang Gao
- Department of Oncology, PuAi Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430034, P.R. China
| | - Min Li
- Department of Oncology, PuAi Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430034, P.R. China
| | - An-Li Jiang
- Department of Clinical Medicine, Medical College, Wuhan University of Science and Technology, Wuhan, Hubei 430065, P.R. China
| | - Rui Sun
- Department of Oncology, PuAi Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430034, P.R. China
| | - Hong-Lin Jin
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Hua-Wei Gui
- Department of Pathology, PuAi Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430034, P.R. China
| | - Fei Xiao
- Department of Oncology, PuAi Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430034, P.R. China
| | - Xiang-Wu Ding
- Department of Oncology, PuAi Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430034, P.R. China
| | - Zhen-Ming Fu
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Jue-Ping Feng
- Department of Oncology, PuAi Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430034, P.R. China
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153
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Epithelial-mesenchymal transition in prostate cancer: an overview. Oncotarget 2018; 8:35376-35389. [PMID: 28430640 PMCID: PMC5471062 DOI: 10.18632/oncotarget.15686] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 02/15/2017] [Indexed: 12/17/2022] Open
Abstract
Prostate cancer is a main urological disease associated with significant morbidity and mortality. Radical prostatectomy and radiotherapy are potentially curative for localized prostate cancer, while androgen deprivation therapy is the initial systemic therapy for metastatic prostate disease. However, despite temporary response, most patients relapse and evolve into castration resistant cancer. Epithelial-mesenchymal transition (EMT) is a complex gradual process that occurs during embryonic development and/or tumor progression. During this process, cells lose their epithelial characteristics and acquire mesenchymal features. Increasing evidences indicate that EMT promotes prostate cancer metastatic progression and it is closely correlated with increased stemness and drug resistance. In this review, we discuss the main molecular events that directly or indirectly govern the EMT program in prostate cancer, in order to better define the role and the mechanisms underlying this process in prostate cancer progression and therapeutic resistance.
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154
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Cao X, Zhou Y, Sun H, Xu M, Bi X, Zhao Z, Shen B, Wan F, Hong Z, Lan L, Luo L, Guo Z, Yin Z. EGFR-TKI-induced HSP70 degradation and BER suppression facilitate the occurrence of the EGFR T790 M resistant mutation in lung cancer cells. Cancer Lett 2018. [PMID: 29524558 DOI: 10.1016/j.canlet.2018.03.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Non-small cell lung cancer (NSCLC) patients harboring EGFR-activating mutations initially respond to EGFR tyrosine kinase inhibitors (EGFR-TKIs) and have shown favorable outcomes. However, acquired drug resistance to EGFR-TKIs develops in almost all patients mainly due to the EGFR T790 M mutation. Here, we show that treatment with low-dose EGFR-TKI results in the emergence of the EGFR T790 M mutation and in the reduction of HSP70 protein levels in HCC827 cells. Erlotinib treatment inhibits HSP70 phosphorylation at tyrosine 41 and increases HSP70 ubiquitination, resulting in HSP70 degradation. We show that EGFR-TKI treatment causes increased DNA damage and enhanced gene mutation rates, which are secondary to the EGFR-TKI-induced reduction of HSP70 protein. Importantly, HSP70 overexpression delays the occurrence of Erlotinib-induced EGFR T790 M mutation. We further demonstrate that HSP70 interacts with multiple enzymes in the base excision repair (BER) pathway and promotes not only the efficiency but also the fidelity of BER. Collectively, our findings show that EGFR-TKI treatment facilitates gene mutation and the emergence of EGFR T790 M secondary mutation by the attenuation of BER via induction of HSP70 protein degradation.
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Affiliation(s)
- Xiang Cao
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, 210046, Jiangsu, PR China
| | - Yi Zhou
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, 210046, Jiangsu, PR China
| | - Hongfang Sun
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, 210046, Jiangsu, PR China
| | - Miao Xu
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, 210046, Jiangsu, PR China
| | - Xiaowen Bi
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, 210046, Jiangsu, PR China
| | - Zhihui Zhao
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, 210046, Jiangsu, PR China
| | - Binghui Shen
- Department of Radiation Biology, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, 91010, USA
| | - Fengyi Wan
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - Zhuan Hong
- Jiangsu Cancer Hospital, Nanjing, 210009, Jiangsu, PR China
| | - Lei Lan
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, 210046, Jiangsu, PR China.
| | - Lan Luo
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, Jiangsu, PR China.
| | - Zhigang Guo
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, 210046, Jiangsu, PR China.
| | - Zhimin Yin
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, 210046, Jiangsu, PR China.
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155
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Inactivation of p38 MAPK contributes to stem cell-like properties of non-small cell lung cancer. Oncotarget 2018; 8:26702-26717. [PMID: 28460458 PMCID: PMC5432291 DOI: 10.18632/oncotarget.15804] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 02/15/2017] [Indexed: 01/07/2023] Open
Abstract
Cancer stem cells (CSCs) are recognized as the major source for cancer initiation and recurrence. Yet, the mechanism by which the cancer stem cell properties are acquired and maintained in a cancer cell population is not well understood. In the current study, we observed that the level of active p38 MAPK is downregulated, while the level of the stemness marker SOX2 is upregulated in lung cancer tissues as compared to normal tissues. We further demonstrated that inactivation of p38 is a potential mechanism contributing to acquisition and maintenance of cancer stem cell properties in non-small cell lung cancer (NSCLC) cells. p38, in particular the p38γ and p38δ isoforms, suppresses the cancer stem cell properties and tumor initiating ability of NSCLC cells by promoting the ubiquitylation and degradation of stemness proteins such as SOX2, Oct4, Nanog, Klf4 and c-Myc, through MK2-mediated phosphorylation of Hsp27 that is an essential component of the proteasomal degradation machinery. In contrast, inactivation of p38 in lung cancer cells leads to upregulation of the stemness proteins, thus promoting the cancer stem cell properties of these cells. These findings have demonstrated a novel mechanism by which cancer stem cell properties are acquired and maintained in a cancer cell population, and have revealed a new function of the p38 pathway in suppressing cancer development. These studies have also identified a new pathway that can potentially serve as a target for cancer therapies aimed at eliminating CSCs.
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156
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Addressing intra-tumoral heterogeneity and therapy resistance. Oncotarget 2018; 7:72322-72342. [PMID: 27608848 PMCID: PMC5342165 DOI: 10.18632/oncotarget.11875] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 08/24/2016] [Indexed: 12/12/2022] Open
Abstract
In the last several years, our appreciation of intra-tumoral heterogeneity has greatly increased due to accumulating evidence for the co-existence of genetically and epigenetically divergent cancer cells residing in different microenvironments within a tumor. Herein, we review recent literature discussing intra-tumoral heterogeneity in the context of therapy resistance mechanisms at the genetic, epigenetic and microenvironmental levels. We illustrate the influence of tumor microenvironment on therapy resistance and epigenetic states of cancer cells by highlighting the role of cancer stem cells in therapy resistance. We also summarize different strategies that have been employed to address various resistance mechanisms at genetic, epigenetic, and microenvironmental levels in preclinical and clinical studies. We propose that future personalized cancer therapy design needs to incorporate dynamic and comprehensive analyses of tumor heterogeneity landscape and multi-dimensional mechanisms of therapy resistance.
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157
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Mohammadi-Ostad-Kalayeh S, Stahl F, Scheper T, Kock K, Herrmann C, Heleno Batista FA, Borges JC, Sasse F, Eichner S, Ongouta J, Zeilinger C, Kirschning A. Heat Shock Proteins Revisited: Using a Mutasynthetically Generated Reblastatin Library to Compare the Inhibition of Human and Leishmania Hsp90s. Chembiochem 2018; 19:562-574. [PMID: 29265716 DOI: 10.1002/cbic.201700616] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Indexed: 01/12/2023]
Abstract
Thirteen new reblastatin derivatives, with alkynyl, amino and fluoro substituents on the aromatic ring, were prepared by a chemo-biosynthetic approach using an AHBA(-) mutant strain of Streptomyces hygroscopicus, the geldanamycin producer. The inhibitory potencies of these mutaproducts and of an extended library of natural products and derivatives were probed with purified heat shock proteins (Hsps), obtained from Leishmania braziliensis (LbHsp90) as well as from human sources (HsHsp90). We determined the activities of potential inhibitors by means of a displacement assay in which fluorescence-labelled ATP competes for the ATP binding sites of Hsps in the presence of the inhibitor in question. The results were compared with those of cell-based assays and, in selected cases, of isothermal titration calorimetry (ITC) measurements. In essence, reblastatin derivatives are also able to bind effectively to the ATP-binding site of LbHsp90, and for selected derivatives, moderate differences in binding to LbHsp90 and HsHsp90 were encountered. This work demonstrates that parasitic heat shock proteins can be developed as potential pharmaceutical targets.
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Affiliation(s)
- Sona Mohammadi-Ostad-Kalayeh
- Institute of Biophysics and Center of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, Schneiderberg 38, 30167, Hannover, Germany
| | - Frank Stahl
- Institute of Technical Chemistry and Center of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, Callinstrasse 5, 30167, Hannover, Germany
| | - Thomas Scheper
- Institute of Technical Chemistry and Center of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, Callinstrasse 5, 30167, Hannover, Germany
| | - Klaus Kock
- Physical Chemistry I, Ruhr University Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
| | - Christian Herrmann
- Physical Chemistry I, Ruhr University Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
| | | | - Júlio César Borges
- São Carlos Institute of Chemistry, University of São Paulo, USP, São Carlos, SP, 13560-970, Brazil
| | - Florenz Sasse
- Department of Chemical Biology, Helmholtz Center of Infectious Research (HZI), Inhoffenstrasse 7, 38124, Braunschweig, Germany
| | - Simone Eichner
- Institute of Organic Chemistry and Center of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, Schneiderberg 1B, 30167, Hannover, Germany
| | - Jekaterina Ongouta
- Institute of Organic Chemistry and Center of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, Schneiderberg 1B, 30167, Hannover, Germany
| | - Carsten Zeilinger
- Institute of Biophysics and Center of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, Schneiderberg 38, 30167, Hannover, Germany
| | - Andreas Kirschning
- Institute of Organic Chemistry and Center of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, Schneiderberg 1B, 30167, Hannover, Germany
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158
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Bizarro A, Sousa D, Lima RT, Musso L, Cincinelli R, Zuco V, De Cesare M, Dallavalle S, Vasconcelos MH. Synthesis and Evaluation of the Tumor Cell Growth Inhibitory Potential of New Putative HSP90 Inhibitors. Molecules 2018; 23:molecules23020407. [PMID: 29438315 PMCID: PMC6017909 DOI: 10.3390/molecules23020407] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 02/03/2018] [Accepted: 02/11/2018] [Indexed: 12/18/2022] Open
Abstract
Background: Heat shock protein 90 (HSP90) is a well-known target for cancer therapy. In a previous work, some of us have reported a series of 3-aryl-naphtho[2,3-d]isoxazole-4,9-diones as inhibitors of HSP90. Methods: In the present work, various compounds with new chromenopyridinone and thiochromenopyridinone scaffolds were synthesized as potential HSP90 inhibitors. Their binding affinity to HSP90 was studied in vitro. Selected compounds (5 and 8) were further studied in various tumor cell lines regarding their potential to cause cell growth inhibition, alter the cell cycle profile, inhibit proliferation, and induce apoptosis. Their effect on HSP90 client protein levels was also confirmed in two cell lines. Finally, the antitumor activity of compound 8 was studied in A431 squamous cell carcinoma xenografts in nude mice. Results: Our results indicated that treatment with compounds 5 and 8 decreased the proliferation of tumor cell lines and compound 8 induced apoptosis. In addition, these two compounds were able to downregulate selected proteins known as “clients” of HSP90. Finally, treatment of xenografted mice with compound 5 resulted in a considerable dose-dependent inhibition of tumor growth. Conclusions: Our results show that two new compounds with a chromenopyridinone and thiochromenopyridinone scaffold are promising putative HSP90 inhibitors causing tumor cell growth inhibition.
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Affiliation(s)
- Ana Bizarro
- Department of Biological Sciences, Faculty of Pharmacy of the University of Porto (FFUP), Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
- Department of Biology, School of Sciences, University of Minho, 4710-057 Braga, Portugal.
| | - Diana Sousa
- Department of Biological Sciences, Faculty of Pharmacy of the University of Porto (FFUP), Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
- i3S-Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal.
- Cancer Drug Resistance Group, Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-135 Porto, Portugal.
| | - Raquel T Lima
- i3S-Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal.
- Cancer Drug Resistance Group, Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-135 Porto, Portugal.
- Department of Pathology, Faculty of Medicine of the University of Porto (FMUP), Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal.
| | - Loana Musso
- Department of Food, Environmental and Nutritional Sciences Division of Chemistry and Molecular Biology, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy.
| | - Raffaella Cincinelli
- Department of Food, Environmental and Nutritional Sciences Division of Chemistry and Molecular Biology, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy.
| | - Vantina Zuco
- Department of Experimental Oncology and Molecular Medicine, Fondazione, IRCCS-Istituto Nazionale dei Tumori, Via Amadeo 42, 20133 Milano, Italy.
| | - Michelandrea De Cesare
- Department of Experimental Oncology and Molecular Medicine, Fondazione, IRCCS-Istituto Nazionale dei Tumori, Via Amadeo 42, 20133 Milano, Italy.
| | - Sabrina Dallavalle
- Department of Food, Environmental and Nutritional Sciences Division of Chemistry and Molecular Biology, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy.
| | - M Helena Vasconcelos
- Department of Biological Sciences, Faculty of Pharmacy of the University of Porto (FFUP), Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
- i3S-Instituto de Investigação e Inovação em Saúde da Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal.
- Cancer Drug Resistance Group, Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-135 Porto, Portugal.
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159
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Zhou C, Sun H, Zheng C, Gao J, Fu Q, Hu N, Shao X, Zhou Y, Xiong J, Nie K, Zhou H, Shen L, Fang H, Lyu J. Oncogenic HSP60 regulates mitochondrial oxidative phosphorylation to support Erk1/2 activation during pancreatic cancer cell growth. Cell Death Dis 2018; 9:161. [PMID: 29415987 PMCID: PMC5833694 DOI: 10.1038/s41419-017-0196-z] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 11/05/2017] [Accepted: 12/05/2017] [Indexed: 12/25/2022]
Abstract
HSP60 is a mitochondrial localized quality control protein responsible for maintaining mitochondrial function. Although HSP60 is considered both a tumor suppressor and promoter in different types of cancer, the role of HSP60 in human pancreatic ductal adenocarcinoma (PDAC) remains unknown. In this study, we demonstrated that HSP60 was aberrantly expressed in human pancreatic cancer tissues and cell lines. Analysis of the Cancer Genome Atlas database revealed that HSP60 expression is positively correlated with pancreatic cancer. Further, knockdown of HSP60 attenuated pancreatic ductal cancer cell proliferation and migration/invasion, whereas ectopic expression of HSP60 increased tumorigenesis. Using an in vivo tumorigenicity assay, we confirmed that HSP60 promoted the growth of pancreatic ductal cancer cells. Functional analyses demonstrated that HSP60 plays a key role in the regulation of mitochondrial function. Mechanistically, both HSP60 knockdown and oxidative phosphorylation (OXPHOS) inhibition by metformin decreased Erk1/2 phosphorylation and induced apoptosis and cell cycle arrest, whereas Erk1/2 reactivation with EGF promoted cell proliferation. Intriguingly, in vitro ATP supplementation partially restored Erk1/2 phosphorylation and promoted proliferation in PDAC cells with HSP60 knockdown and OXPHOS inhibition. These results suggest that mitochondrial ATP is an important sensor of Erk1/2 regulated apoptosis and the cell cycle in PDAC cells. Thus, our findings indicate for the first time that HSP60 may serve as a novel diagnostic target of human pancreatic cancer, and that inhibition of mitochondrial function using drugs such as metformin may be a beneficial therapeutic strategy targeting pancreatic cancer cells with aberrant function of the HSP60/OXPHOS/Erk1/2 phosphorylation axis.
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Affiliation(s)
- Chao Zhou
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.,Department of Clinical Laboratory, Children's Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Hongwei Sun
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Chen Zheng
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jing Gao
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Qingzi Fu
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Nianqi Hu
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiaoli Shao
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yingying Zhou
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jingting Xiong
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Ke Nie
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Huaibin Zhou
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Lijun Shen
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hezhi Fang
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.
| | - Jianxin Lyu
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China. .,Hangzhou Medical College, Hangzhou, Zhejiang, China.
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160
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Meng E, Shevde LA, Samant RS. Emerging roles and underlying molecular mechanisms of DNAJB6 in cancer. Oncotarget 2018; 7:53984-53996. [PMID: 27276715 PMCID: PMC5288237 DOI: 10.18632/oncotarget.9803] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 05/26/2016] [Indexed: 12/29/2022] Open
Abstract
DNAJB6 also known as mammalian relative of DnaJ (MRJ) encodes a highly conserved member of the DnaJ/Hsp40 family of co-chaperone proteins that function with Hsp70 chaperones. DNAJB6 is widely expressed in all tissues, with higher expression levels detected in the brain. DNAJB6 is involved in diverse cellular functions ranging from murine placental development, reducing the formation and toxicity of mis-folded protein aggregates, to self-renewal of neural stem cells. Involvement of DNAJB6 is implicated in multiple pathologies such as Huntington's disease, Parkinson's diseases, limb-girdle muscular dystrophy, cardiomyocyte hypertrophy and cancer. This review summarizes the important involvement of the spliced isoforms of DNAJB6 in various pathologies with a specific focus on the emerging roles of human DNAJB6 in cancer and the underlying molecular mechanisms.
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Affiliation(s)
- Erhong Meng
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA.,Beijing DOING Biomedical Technology Co. Ltd., Beijing,China
| | - Lalita A Shevde
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA.,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Rajeev S Samant
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA.,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama, USA
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161
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Carvalho GCBC, Moura CS, Roquetto AR, Barrera-Arellano D, Yamada AT, Santos AD, Saad MJA, Amaya-Farfan J. Impact ofTrans-Fats on Heat-Shock Protein Expression and the Gut Microbiota Profile of Mice. J Food Sci 2018; 83:489-498. [DOI: 10.1111/1750-3841.13997] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 10/24/2017] [Accepted: 10/30/2017] [Indexed: 01/19/2023]
Affiliation(s)
| | - Carolina Soares Moura
- Food and Nutrition Dept., Protein Resources Laboratory, School of Food Engineering; Univ. of Campinas; Campinas SP Brazil 13083-862
| | - Aline Rissetti Roquetto
- Food and Nutrition Dept., Protein Resources Laboratory, School of Food Engineering; Univ. of Campinas; Campinas SP Brazil 13083-862
| | - Daniel Barrera-Arellano
- Food Technology Dept., Oils and Fats Laboratory, School of Food Engineering; Univ. of Campinas; Campinas SP Brazil 13083-970
| | - Aureo Tatsumi Yamada
- Biochemistry and Tissue Biology Dept., Inst. of Biology; Univ. of Campinas; Campinas SP Brazil 13083-970
| | - Andrey dos Santos
- Internal Medicine Dept., School of Medical Sciences; Univ. of Campinas; Campinas SP Brazil 13083-887
| | - Mário José Abdalla Saad
- Internal Medicine Dept., School of Medical Sciences; Univ. of Campinas; Campinas SP Brazil 13083-887
| | - Jaime Amaya-Farfan
- Food and Nutrition Dept., Protein Resources Laboratory, School of Food Engineering; Univ. of Campinas; Campinas SP Brazil 13083-862
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162
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The histone deacetylase inhibitor SAHA induces HSP60 nitration and its extracellular release by exosomal vesicles in human lung-derived carcinoma cells. Oncotarget 2018; 7:28849-67. [PMID: 26700624 PMCID: PMC5045361 DOI: 10.18632/oncotarget.6680] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 11/22/2015] [Indexed: 12/14/2022] Open
Abstract
HSP60 undergoes changes in quantity and distribution in some types of tumors suggesting a participation of the chaperonin in the mechanism of transformation and cancer progression. Suberoylanilide hydroxamic acid (SAHA), a member of a family of histone deacetylase inhibitors (HDACi), has anti-cancer potential but its interaction, if any, with HSP60 has not been elucidated. We investigated the effects of SAHA in a human lung-derived carcinoma cell line (H292). We analysed cell viability and cycle; oxidative stress markers; mitochondrial integrity; HSP60 protein and mRNA levels; and HSP60 post-translational modifications, and its secretion. We found that SAHA is cytotoxic for H292 cells, interrupting the cycle at the G2/M phase, which is followed by death; cytotoxicity is associated with oxidative stress, mitochondrial damage, and diminution of intracellular levels of HSP60; HSP60 undergoes a post-translational modification and becomes nitrated; and nitrated HSP60 is exported via exosomes. We propose that SAHA causes ROS overproduction and mitochondrial dysfunction, which leads to HSP60 nitration and release into the intercellular space and circulation to interact with the immune system. These successive steps might constitute the mechanism of the anti-tumor action of SAHA and provide a basis to design supplementary therapeutic strategies targeting HSP60, which would be more efficacious than the compound alone.
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163
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Aristizabal Prada ET, Auernhammer CJ. Targeted therapy of gastroenteropancreatic neuroendocrine tumours: preclinical strategies and future targets. Endocr Connect 2018; 7:R1-R25. [PMID: 29146887 PMCID: PMC5754510 DOI: 10.1530/ec-17-0286] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 11/16/2017] [Indexed: 12/12/2022]
Abstract
Molecular targeted therapy of advanced neuroendocrine tumours (NETs) of the gastroenteropancreatic (GEP) system currently encompasses approved therapy with the mammalian target of rapamycin (mTOR) inhibitor everolimus and the multi-tyrosinkinase inhibitor sunitinib. However, clinical efficacy of these treatment strategies is limited by low objective response rates and limited progression-free survival due to tumour resistance. Further novel strategies for molecular targeted therapy of NETs of the GEP system are needed. This paper reviews preclinical research models and signalling pathways in NETs of the GEP system. Preclinical and early clinical data on putative novel targets for molecular targeted therapy of NETs of the GEP system are discussed, including PI3K, Akt, mTORC1/mTORC2, GSK3, c-Met, Ras-Raf-MEK-ERK, embryogenic pathways (Hedgehog, Notch, Wnt/beta-catenin, TGF-beta signalling and SMAD proteins), tumour suppressors and cell cycle regulators (p53, cyclin-dependent kinases (CDKs) CDK4/6, CDK inhibitor p27, retinoblastoma protein (Rb)), heat shock protein HSP90, Aurora kinase, Src kinase family, focal adhesion kinase and epigenetic modulation by histone deacetylase inhibitors.
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Affiliation(s)
- E T Aristizabal Prada
- Department of Internal Medicine IVCampus Grosshadern, University-Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - C J Auernhammer
- Department of Internal Medicine IVCampus Grosshadern, University-Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
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164
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Önay Uçar E, Şengelen A, Mertoğlu E, Pekmez M, Arda N. Suppression of HSP70 Expression by Quercetin and Its Therapeutic Potential Against Cancer. HSP70 IN HUMAN DISEASES AND DISORDERS 2018. [DOI: 10.1007/978-3-319-89551-2_19] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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165
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Park K, Kwak IS. Disrupting effects of antibiotic sulfathiazole on developmental process during sensitive life-cycle stage of Chironomus riparius. CHEMOSPHERE 2018; 190:25-34. [PMID: 28972920 DOI: 10.1016/j.chemosphere.2017.09.118] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 09/17/2017] [Accepted: 09/25/2017] [Indexed: 05/26/2023]
Abstract
Antibiotics in the environment are a concern due to their potential to harm humans and interrupt ecosystems. Sulfathiazole (STZ), a sulfonamide antibiotic, is commonly used in aquaculture and is typically found in aquatic ecosystems. We evaluated the ecological risk of STZ by examining biological, molecular and biochemical response in Chironomus riparius. Samples were exposed to STZ for 12, 24 and 96 h, and effects of STZ were evaluated at the molecular level by analyzing changes in gene expression related to the endocrine system, cellular stress response and enzyme activity of genes on antioxidant and detoxification pathways. STZ exposure induced significant effects on survival, growth and sex ratio of emergent adults and mouthpart deformity in C. riparius. STZ caused concentration and time-dependent toxicity in most of the selected biomarkers. STZ exposure leads to significant heat-shock response of protein genes (HSP70, HSP40, HSP90 and HSP27) and to disruption by up-regulating selected genes, including the ecdysone receptor gene, estrogen-related receptors, ultraspiracle and E74 early ecdysone-responsive gene. Furthermore, STZ induced alteration of enzyme activities on antioxidant and detoxification responses (catalase, superoxide dismutase, glutathione peroxidase and peroxidase) in C. riparius. By inducing oxidative stress, antibiotic STZ disturbs the endocrine system and produces adverse effects in growth processes of invertebrates.
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Affiliation(s)
- Kiyun Park
- Faculty of Marine Technology, Chonnam National University, Yeosu 550-749, South Korea
| | - Ihn-Sil Kwak
- Faculty of Marine Technology, Chonnam National University, Yeosu 550-749, South Korea.
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166
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Ikwegbue PC, Masamba P, Oyinloye BE, Kappo AP. Roles of Heat Shock Proteins in Apoptosis, Oxidative Stress, Human Inflammatory Diseases, and Cancer. Pharmaceuticals (Basel) 2017; 11:E2. [PMID: 29295496 PMCID: PMC5874698 DOI: 10.3390/ph11010002] [Citation(s) in RCA: 161] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 11/14/2017] [Accepted: 11/17/2017] [Indexed: 12/12/2022] Open
Abstract
Heat shock proteins (HSPs) play cytoprotective activities under pathological conditions through the initiation of protein folding, repair, refolding of misfolded peptides, and possible degradation of irreparable proteins. Excessive apoptosis, resulting from increased reactive oxygen species (ROS) cellular levels and subsequent amplified inflammatory reactions, is well known in the pathogenesis and progression of several human inflammatory diseases (HIDs) and cancer. Under normal physiological conditions, ROS levels and inflammatory reactions are kept in check for the cellular benefits of fighting off infectious agents through antioxidant mechanisms; however, this balance can be disrupted under pathological conditions, thus leading to oxidative stress and massive cellular destruction. Therefore, it becomes apparent that the interplay between oxidant-apoptosis-inflammation is critical in the dysfunction of the antioxidant system and, most importantly, in the progression of HIDs. Hence, there is a need to maintain careful balance between the oxidant-antioxidant inflammatory status in the human body. HSPs are known to modulate the effects of inflammation cascades leading to the endogenous generation of ROS and intrinsic apoptosis through inhibition of pro-inflammatory factors, thereby playing crucial roles in the pathogenesis of HIDs and cancer. We propose that careful induction of HSPs in HIDs and cancer, especially prior to inflammation, will provide good therapeutics in the management and treatment of HIDs and cancer.
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Affiliation(s)
- Paul Chukwudi Ikwegbue
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
| | - Priscilla Masamba
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
| | - Babatunji Emmanuel Oyinloye
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
- Department of Biochemistry, Afe Babalola University, PMB 5454, Ado-Ekiti 360001, Nigeria.
| | - Abidemi Paul Kappo
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
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167
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Moore S, Järvelin AI, Davis I, Bond GL, Castello A. Expanding horizons: new roles for non-canonical RNA-binding proteins in cancer. Curr Opin Genet Dev 2017; 48:112-120. [PMID: 29216518 PMCID: PMC5894799 DOI: 10.1016/j.gde.2017.11.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 11/16/2017] [Accepted: 11/20/2017] [Indexed: 01/12/2023]
Abstract
Cancer development involves the stepwise accumulation of genetic lesions that overcome the normal regulatory pathways that prevent unconstrained cell division and tissue growth. Identification of the genetic changes that cause cancer has long been the subject of intensive study, leading to the identification of several RNA-binding proteins (RBPs) linked to cancer. Cross-reference of the complement of RBPs recently identified by RNA interactome capture with cancer-associated genes and biological processes led to the identification of a set of 411 proteins with potential implications in cancer biology. These involve a broad spectrum of cellular processes including response to stress, metabolism and cell adhesion. Future studies should aim to understand these proteins and their connection to cancer from an RNA-centred perspective, holding the promise of new mechanistic understanding of cancer formation and novel approaches to diagnosis and treatment.
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Affiliation(s)
- Samantha Moore
- Department of Biochemistry, University of Oxford, United Kingdom; Ludwig Institute for Cancer Research, Nuffield Department of Medicine, University of Oxford, United Kingdom
| | - Aino I Järvelin
- Department of Biochemistry, University of Oxford, United Kingdom
| | - Ilan Davis
- Department of Biochemistry, University of Oxford, United Kingdom
| | - Gareth L Bond
- Ludwig Institute for Cancer Research, Nuffield Department of Medicine, University of Oxford, United Kingdom
| | - Alfredo Castello
- Department of Biochemistry, University of Oxford, United Kingdom.
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168
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Rong B, Yang S. Molecular mechanism and targeted therapy of Hsp90 involved in lung cancer: New discoveries and developments (Review). Int J Oncol 2017; 52:321-336. [PMID: 29207057 DOI: 10.3892/ijo.2017.4214] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Accepted: 06/13/2017] [Indexed: 11/05/2022] Open
Abstract
The exploration of the molecular mechanisms and signaling pathways on lung cancer is very important for developing new strategies of diagnosis and treatment to this disease, such as finding valuable lung cancer markers and molecularly targeted therapies. Previously, a number of studies disclose that heat shock protein 90 (Hsp90) is upregulated in cancer cells, tissues and serum of lung cancer patients, and its upregulation intimately correlates with the occurrence, development and outcome of lung cancer. On the contrary, inhibition of Hsp90 can suppress cell proliferation, motility and metastasis of lung cancer and promote apoptosis of lung cancer cells via complex signaling pathways. In addition, a series of Hsp90 inhibitors have been investigated as effective molecular targeted therapy tactics fighting against lung cancer. This review, systematically summarizes the role of Hsp90 in lung cancer, the molecular mechanisms and development of anti-Hsp90 treatment in lung cancer.
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Affiliation(s)
- Biaoxue Rong
- Department of Oncology, First Affiliated Hospital, Xi'an Medical University, Xi'an, Shaanxi, P.R. China
| | - Shuanying Yang
- Department of Respiratory Medicine, Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
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169
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Karam J, Fadous-Khalifé MC, Tannous R, Fakhreddine S, Massoud M, Hadchity J, Aftimos G, Hadchity E. Role of Krüppel-like factor 4 and heat shock protein 27 in cancer of the larynx. Mol Clin Oncol 2017; 7:808-814. [PMID: 29181170 DOI: 10.3892/mco.2017.1412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 06/07/2017] [Indexed: 12/27/2022] Open
Abstract
Late detection and lack of standard treatment strategies in larynx cancer patients result in high levels of mortality and poor prognosis. Prognostic stratification of larynx cancer patients based on molecular prognostic tumor biomarkers may lead to more efficient clinical management. Krüppel-like factor 4 (KLF4) and Heat Shock Protein 27 (HSP27) have an important role in tumorigenesis and are considered promising candidate biomarkers for various types of cancer. However, their role in larynx carcinoma remains to be elucidated. The present study aimed to determine KLF4 and HSP27 expression profiles in laryngeal tumors. The protein and mRNA expression levels of KLF4 and HSP27 were evaluated by immunohistochemical and reverse transcription-polymerase chain reaction analyses in 44 larynx carcinoma samples and 21 normal tissue samples, and then correlated with clinical characteristics. A differential expression of KLF4 and HSP27 was observed between normal and tumor tissues. The protein and mRNA expression levels of KLF4 were significantly decreased in larynx squamous cell carcinoma (LSCC) compared with normal tissue, whereas HSP27 was significantly overexpressed in tumor tissues compared with normal tissues, at the protein and mRNA levels. KLF4 expression decreased gradually with tumor progression whereas HSP27 expression increased. A significant difference was observed between stages I and IV. KLF4 and HSP27 exhibit opposite functions and roles in the carcinogenic process of LSCC. Their role in laryngeal cancer initiation and progression emphasizes their use as potential future targets for prognosis and treatment. KLF4 and HSP27 expression levels may act as potential biomarkers in patients with cancer of the larynx.
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Affiliation(s)
- Jihad Karam
- Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon
| | - Marie Claude Fadous-Khalifé
- Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon.,Notre Dame de Secours University Hospital, Jbeil 1401, Lebanon
| | - Rita Tannous
- Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon
| | - Sally Fakhreddine
- Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon
| | - Marcel Massoud
- Notre Dame de Secours University Hospital, Jbeil 1401, Lebanon
| | - Joseph Hadchity
- Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon.,Department of Surgery, St. Therese Hospital, Hadat 1003, Lebanon
| | | | - Elie Hadchity
- Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon
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170
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Jahangirizadeh Z, Ghafouri H, Sajedi RH, Sarikhan S, Taghdir M, Sariri R. Molecular cloning, prokaryotic expression, purification, structural studies and functional implications of Heat Shock Protein 70 (Hsp70) from Rutilus frisii kutum. Int J Biol Macromol 2017; 108:798-807. [PMID: 29107750 DOI: 10.1016/j.ijbiomac.2017.10.174] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/26/2017] [Accepted: 10/27/2017] [Indexed: 10/18/2022]
Abstract
A novel Hsp70 chaperone from Rutilus frisii kutum was identified, cloned, expressed, purified and its functional characteristics revealed. The 3D structure of Hsp70 from Rutilus kutum was constructed using the crystal structure of E. coli Hsp70 as the template, with 47% sequence identity. The in vitro ATPase activity assay after 60min, ATP hydrolysis of purified recombinant Hsp70 (8μM) was improved by binding to denatured thermally luciferase (3μM) about 2.5-fold compared with that of Hsp70 alone. Based on the results, it was found that the purified Hsp70 chaperone was able to considerably suppress heat-induced aggregation of luciferase by binding to DnaJ co-chaperone (5μM) more than 70% after 10min at 42°C. In addition, Hsp70 DnaJ complex improved the refolding of heat-shocked luciferase nearly 40% after 60min at 25°C. It was concluded that Hsp70 protein from Rutilus frisii kutum has the critical role in preventing heat-induced aggregation of luciferase and refolding of heat-denatured luciferase was strictly dependent on the activity of Hsp70, thus, this protein can potentially be used for improving the functional properties of luciferase in various applications.
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Affiliation(s)
| | - Hossein Ghafouri
- Department of Biology, Faculty of Science, University of Guilan, Rasht, IR Iran.
| | - Reza H Sajedi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, IR Iran
| | - Sajjad Sarikhan
- Molecular Bank, Iranian Biological Resource Center (IBRC), ACECR, Tehran, IR Iran
| | - Majid Taghdir
- Department of Biophysics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, IR Iran
| | - Reyhaneh Sariri
- Department of Biology, Faculty of Science, University of Guilan, Rasht, IR Iran
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171
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Yoo MW, Park J, Han HS, Yun YM, Kang JW, Choi DY, Lee JW, Jung JH, Lee KY, Kim KP. Discovery of gastric cancer specific biomarkers by the application of serum proteomics. Proteomics 2017; 17. [PMID: 28133907 DOI: 10.1002/pmic.201600332] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 11/22/2016] [Accepted: 01/26/2017] [Indexed: 11/07/2022]
Abstract
Current diagnostic markers for gastric cancer are not sufficiently specific or sensitive for use in clinical practice. The aims of this study are to compare the proteomes of serum samples from patients with gastric cancers and normal controls, and to develop useful tumor markers of gastric cancer by quantitative proteomic analysis. We identified a total of 388 proteins with a ≤1% FDR and with at least two unique peptides from the sera of each group. Among them, 215, 251, and 260 proteins were identified in serum samples of patients in an advanced cancer group, early cancer group, and normal control group, respectively. We selected differentially expressed proteins in cancer patients compared with those of normal controls via semiquantitative analyses comparing the spectral counts of identified proteins. These differentially expressed proteins were successfully verified using an MS-based quantitative assay, multiple reactions monitoring analysis. Four proteins (vitronectin, clusterin isoform 1, thrombospondin 1, and tyrosine-protein kinase SRMS) were shown to have significant changes between the cancer groups and the normal control group. These four serum proteins were able to discriminate gastric cancer patients from normal controls with sufficient specificity and selectivity.
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Affiliation(s)
- Moon-Won Yoo
- Department of Surgery, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Jisook Park
- Department of Applied Chemistry, College of Applied Sciences, Kyung Hee University, Yong-in City, Republic of Korea
| | - Hye-Seung Han
- Department of Pathology, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Yeo-Min Yun
- Department of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Jeong Won Kang
- Department of Applied Chemistry, College of Applied Sciences, Kyung Hee University, Yong-in City, Republic of Korea
| | - Do-Young Choi
- Department of Applied Chemistry, College of Applied Sciences, Kyung Hee University, Yong-in City, Republic of Korea
| | - Joon Won Lee
- Department of Applied Chemistry, College of Applied Sciences, Kyung Hee University, Yong-in City, Republic of Korea
| | - Jae Hun Jung
- Department of Applied Chemistry, College of Applied Sciences, Kyung Hee University, Yong-in City, Republic of Korea
| | - Kyung-Yung Lee
- Department of Surgery, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Kwang Pyo Kim
- Department of Applied Chemistry, College of Applied Sciences, Kyung Hee University, Yong-in City, Republic of Korea
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172
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Traxler D, Lainscak M, Simader E, Ankersmit HJ, Jug B. Heat shock protein 27 acts as a predictor of prognosis in chronic heart failure patients. Clin Chim Acta 2017; 473:127-132. [DOI: 10.1016/j.cca.2017.08.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 08/23/2017] [Accepted: 08/23/2017] [Indexed: 11/25/2022]
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173
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Targeting Heat Shock Proteins in Cancer: A Promising Therapeutic Approach. Int J Mol Sci 2017; 18:ijms18091978. [PMID: 28914774 PMCID: PMC5618627 DOI: 10.3390/ijms18091978] [Citation(s) in RCA: 307] [Impact Index Per Article: 43.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 09/01/2017] [Accepted: 09/05/2017] [Indexed: 12/12/2022] Open
Abstract
Heat shock proteins (HSPs) are a large family of chaperones that are involved in protein folding and maturation of a variety of "client" proteins protecting them from degradation, oxidative stress, hypoxia, and thermal stress. Hence, they are significant regulators of cellular proliferation, differentiation and strongly implicated in the molecular orchestration of cancer development and progression as many of their clients are well established oncoproteins in multiple tumor types. Interestingly, tumor cells are more HSP chaperonage-dependent than normal cells for proliferation and survival because the oncoproteins in cancer cells are often misfolded and require augmented chaperonage activity for correction. This led to the development of several inhibitors of HSP90 and other HSPs that have shown promise both preclinically and clinically in the treatment of cancer. In this article, we comprehensively review the roles of some of the important HSPs in cancer, and how targeting them could be efficacious, especially when traditional cancer therapies fail.
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174
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Rajesh Y, Biswas A, Mandal M. Glioma progression through the prism of heat shock protein mediated extracellular matrix remodeling and epithelial to mesenchymal transition. Exp Cell Res 2017; 359:299-311. [PMID: 28844885 DOI: 10.1016/j.yexcr.2017.08.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/21/2017] [Accepted: 08/22/2017] [Indexed: 01/09/2023]
Abstract
Glial tumor is one of the intrinsic brain tumors with high migratory and infiltrative potential. This essentially contributes to the overall poor prognosis by circumvention of conventional treatment regimen in glioma. The underlying mechanism in gliomagenesis is bestowed by two processes- Extracellular matrix (ECM) Remodeling and Epithelial to mesenchymal transition (EMT). Heat Shock Family of proteins (HSPs), commonly known as "molecular chaperons" are documented to be upregulated in glioma. A positive correlation also exists between elevated expression of HSPs and invasive capacity of glial tumor. HSPs overexpression leads to mutational changes in glioma, which ultimately drive cells towards EMT, ECM modification, malignancy and invasion. Differential expression of HSPs - a factor providing cytoprotection to glioma cells, also contributes towards its radioresistance /chemoresistance. Various evidences also display upregulation of EMT and ECM markers by various heat shock inducing proteins e.g. HSF-1. The aim of this review is to study in detail the role of HSPs in EMT and ECM leading to radioresistance/chemoresistance of glioma cells. The existing treatment regimen for glioma could be enhanced by targeting HSPs through immunotherapy, miRNA and exosome mediated strategies. This could be envisaged by better understanding of molecular mechanisms underlying glial tumorigenesis in relation to EMT and ECM remodeling under HSPs influence. Our review might showcase fresh potential for the development of next generation therapeutics for effective glioma management.
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Affiliation(s)
- Y Rajesh
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Angana Biswas
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Mahitosh Mandal
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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175
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Targeting Hsp27/eIF4E interaction with phenazine compound: a promising alternative for castration-resistant prostate cancer treatment. Oncotarget 2017; 8:77317-77329. [PMID: 29100389 PMCID: PMC5652782 DOI: 10.18632/oncotarget.20469] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 07/25/2017] [Indexed: 01/01/2023] Open
Abstract
The actual strategy to improve current therapies in advanced prostate cancer involves targeting genes activated by androgen withdrawal, either to delay or prevent the emergence of the castration-refractory phenotype. However, these genes are often implicated in several physiological processes, and long-term inhibition of survival proteins might be accompanied with cytotoxic effects. To avoid this problem, an alternative therapeutic strategy relies on the identification and use of compounds that disrupt specific protein-protein interactions involved in androgen withdrawal. Specifically, the interaction of the chaperone protein Hsp27 with the initiation factor eIF4E leads to the protection of protein synthesis initiation process and enhances cell survival during cell stress induced by castration or chemotherapy. Thus, in this work we aimed at i) identifying the interaction site of the Hsp27/eIF4E complex and ii) interfere with the relevant protein/protein association mechanism involved in castration-resistant progression of prostate cancer. By a combination of experimental and modeling techniques, we proved that eIF4E interacts with the C-terminal part of Hsp27, preferentially when Hsp27 is phosphorylated. We also observed that the loss of this interaction increased cell chemo-and hormone-sensitivity. In order to find a potential inhibitor of Hsp27/eIF4E interaction, BRET assays in combination with molecular simulations identified the phenazine derivative 14 as the compound able to efficiently interfere with this protein/protein interaction, thereby inhibiting cell viability and increasing cell death in chemo- and castration-resistant prostate cancer models in vitro and in vivo.
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176
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MicroRNA profile for health risk assessment: Environmental exposure to persistent organic pollutants strongly affects the human blood microRNA machinery. Sci Rep 2017; 7:9262. [PMID: 28835693 PMCID: PMC5569060 DOI: 10.1038/s41598-017-10167-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 08/04/2017] [Indexed: 12/24/2022] Open
Abstract
Persistent organic pollutants (POPs) are synthetic chemical substances that accumulate in our environment. POPs such as polychlorinated biphenyls (PCBs), hexachlorobenzene (HCB) and dichlorodiphenyltrichloroethane (DDT) have been classified as carcinogenic to humans and animals. Due to their resistance to biodegradation humans are still exposed to these compounds worldwide. We aim to evaluate the miRNA and transcriptomic response of a human population exposed to POPs. The miRNA and transcriptomic response was measured in blood of healthy subjects by microarray technology and associated with the serum concentrations of six PCB congeners, DDE (a common DDT metabolite), and HCB. A total of 93 miRNA levels appeared significantly associated with the POP-exposure (FDR < 0.05). The miRNA profile includes four tumor suppressor miRNAs, namely miR-193a-3p, miR-152, miR-31-5p and miR-34a-5p. Integration of the miRNA profile with the transcriptome profile suggests an interaction with oncogenes such as MYC, CCND1, BCL2 and VEGFA. We have shown that exposure to POPs is associated with human miRNA and transcriptomic responses. The identified miRNAs and target genes are related to various types of cancer and involved in relevant signaling pathways like wnt and p53. Therefore, these miRNAs may have great potential to contribute to biomarker-based environmental health risk assessment.
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177
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Jubran R, Kocsis J, Garam N, Maláti É, Gombos T, Barabás L, Gráf L, Prohászka Z, Fishelson Z. Circulating mitochondrial stress 70 protein/mortalin and cytosolic Hsp70 in blood: Risk indicators in colorectal cancer. Int J Cancer 2017; 141:2329-2335. [DOI: 10.1002/ijc.30918] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/12/2017] [Accepted: 08/01/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Ritta Jubran
- Department of Cell and Developmental BiologySackler Faculty of Medicine, Tel Aviv UniversityTel Aviv69978 Israel
| | - Judit Kocsis
- 3rd Department of Internal MedicineSemmelweis UniversityBudapest1125 Hungary
| | - Nóra Garam
- 3rd Department of Internal MedicineSemmelweis UniversityBudapest1125 Hungary
| | - Éva Maláti
- 3rd Department of Internal MedicineSemmelweis UniversityBudapest1125 Hungary
| | - Tímea Gombos
- 3rd Department of Internal MedicineSemmelweis UniversityBudapest1125 Hungary
| | - Loránd Barabás
- 2nd Department of SurgerySemmelweis UniversityBudapest1125 Hungary
| | - László Gráf
- 3rd Department of Internal MedicineSemmelweis UniversityBudapest1125 Hungary
| | - Zoltán Prohászka
- 3rd Department of Internal MedicineSemmelweis UniversityBudapest1125 Hungary
| | - Zvi Fishelson
- Department of Cell and Developmental BiologySackler Faculty of Medicine, Tel Aviv UniversityTel Aviv69978 Israel
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178
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Hung CS, Huang CY, Lee CH, Chen WY, Huang MT, Wei PL, Chang YJ. IGFBP2 plays an important role in heat shock protein 27-mediated cancer progression and metastasis. Oncotarget 2017; 8:54978-54992. [PMID: 28903396 PMCID: PMC5589635 DOI: 10.18632/oncotarget.18989] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 06/18/2017] [Indexed: 12/29/2022] Open
Abstract
Heat shock protein 27 (Hsp27) is a key chaperone that interacts with over 200 client proteins. The expression of Hsp27 might be correlated with poor outcome in many types of cancer. Previous study indicated that Hsp27 might be an important biomarker in hepatocellular carcinoma (HCC). However, the detailed mechanism is less well understood. The shRNA-mediated silencing of Hsp27 decreased the proliferation, migration and invasion of HCC cells. In a xenograft model, the silencing of Hsp27 reduced tumor progression. We revealed that the silencing of Hsp27 led to a reduction in insulin-like growth factor binding protein 2 (IGFBP2), which might mediate proliferation and metastasis through vimentin, snail and beta-catenin. The overexpression of IGFBP2 reversed the reductions in cell growth, migration and invasion. The tissue array results showed that HCC patients with high Hsp27 expression exhibited poor prognosis and increased metastasis. The Hsp27 expression was highly correlated with IGFPB2 in CRC specimen. ChIP and luciferase assays showed that Hsp27 does not directly bind the IGFBP2 promoter region to regulate the transcription of IGFBP2. In conclusion, our study demonstrated that Hsp27 is a key mediator of HCC progression and metastasis and that Hsp27 might regulate proliferation and metastasis through IGFBP2. This pathway might provide a new direction for the development of a novel therapeutic strategy for HCC.
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Affiliation(s)
- Chin-Sheng Hung
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Division of General Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei, Taiwan, ROC
| | - Chien-Yu Huang
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan, ROC
| | - Chia-Hwa Lee
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan, ROC
| | - Wei-Yu Chen
- Department of Pathology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Department of Pathology, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan, ROC
| | - Ming-Te Huang
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan, ROC
| | - Po-Li Wei
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Division of General Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei, Taiwan, ROC
- Division of Colorectal Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan, ROC
- Translational Laboratory, Department of Medical Research, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan, ROC
- Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan, ROC
- Cancer Research Center, Taipei Medical University Hospital, Taipei, Taiwan, ROC
| | - Yu-Jia Chang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Division of General Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei, Taiwan, ROC
- Cancer Research Center, Taipei Medical University Hospital, Taipei, Taiwan, ROC
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179
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Role of HSPA1L as a cellular prion protein stabilizer in tumor progression via HIF-1α/GP78 axis. Oncogene 2017; 36:6555-6567. [PMID: 28759037 DOI: 10.1038/onc.2017.263] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 06/05/2017] [Accepted: 06/08/2017] [Indexed: 02/06/2023]
Abstract
The cellular prion protein (PrPC) is associated with metastasis, tumor progression and recurrence; however, the precise mechanisms underlying its action is not well understood. Our study found that PrPC degradation decreased tumor progression in colorectal cancer (CRC). In a CRC cell line and human CRC tissue exposed to hypoxia, induced heat-shock 70-kDa protein-1-like (HSPA1L) expression stabilized hypoxia-inducible factor-1α (HIF-1α) protein and promoted PrPC accumulation and tumorigenicity in vivo. PrPC was degraded via the proteasome pathway mediated by the ubiquitin-protein E3 ligase glycoprotein 78 (GP78), which interacts directly with PrPC. However, hypoxia-induced HSPA1L interacted with GP78 and inhibited its functions. HSPA1L knockdown facilitated the interaction of GP78 and PrPC, thereby increasing PrPC ubiquitination. Thus, GP78 was identified as the ubiquitinase for PrPC, thereby revealing an essential mechanism that controls PrPC levels in CRC. Our results suggest that the HSPA1L/HIF-1α/GP78 axis has a crucial role in PrPC accumulation during tumor progression.
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180
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Yin J, Jiang XY, Qi W, Ji CG, Xie XL, Zhang DX, Cui ZJ, Wang CK, Bai Y, Wang J, Jiang HQ. piR-823 contributes to colorectal tumorigenesis by enhancing the transcriptional activity of HSF1. Cancer Sci 2017; 108:1746-1756. [PMID: 28618124 PMCID: PMC5581525 DOI: 10.1111/cas.13300] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 06/02/2017] [Accepted: 06/10/2017] [Indexed: 12/13/2022] Open
Abstract
Piwi-interacting RNAs (piRNAs), a novel class of small non-coding RNAs, were first discovered in germline cells and are thought to silence transposons in spermatogenesis. Recently, piRNAs have also been identified in somatic tissues, and aberrant expression of piRNAs in tumor tissues may be implicated in carcinogenesis. However, the function of piR-823 in colorectal cancer (CRC) remains unclear. Here, we first found that piR-823 was significantly upregulated in CRC tissues compared with its expression in the adjacent tissues. Inhibition of piR-823 suppressed cell proliferation, arrested the cell cycle in the G1 phase and induced cell apoptosis in CRC cell lines HCT116 and DLD-1, whereas overexpression of piR-823 promoted cell proliferation in normal colonic epithelial cell line FHC. Interestingly, Inhibition of piR-823 repressed the expression of heat shock protein (HSP) 27, 60, 70. Furthermore, elevated HSPs expression partially abolished the effect of piR-823 on cell proliferation and apoptosis. In addition, we further demonstrated that piR-823 increased the transcriptional activity of HSF1, the common transcription factor of HSPs, by binding to HSF1 and promoting its phosphorylation at Ser326. Our study reveals that piR-823 plays a tumor-promoting role by upregulating phosphorylation and transcriptional activity of HSF1 and suggests piR-823 as a potential therapeutic target for CRC.
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Affiliation(s)
- Jie Yin
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, Hebei
| | - Xiao-Yu Jiang
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, Hebei
| | - Wei Qi
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, Hebei
| | - Chen-Guang Ji
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, Hebei
| | - Xiao-Li Xie
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, Hebei
| | - Dong-Xuan Zhang
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, Hebei
| | - Zi-Jin Cui
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, Hebei
| | - Cun-Kai Wang
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, Hebei
| | - Yun Bai
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, Hebei
| | - Jia Wang
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, Hebei.,Ronghe Biotechnology Co., Ltd, Shijiazhuang, Hebei, China
| | - Hui-Qing Jiang
- Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, Hebei
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181
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Abstract
The ubiquitin proteasome pathway was discovered in the 1980s to be a central component of the cellular protein-degradation machinery with essential functions in homeostasis, which include preventing the accumulation of misfolded or deleterious proteins. Cancer cells produce proteins that promote both cell survival and proliferation, and/or inhibit mechanisms of cell death. This notion set the stage for preclinical testing of proteasome inhibitors as a means to shift this fine equilibrium towards cell death. Since the late 1990s, clinical trials have been conducted for a variety of malignancies, leading to regulatory approvals of proteasome inhibitors to treat multiple myeloma and mantle-cell lymphoma. First-generation and second-generation proteasome inhibitors can elicit deep initial responses in patients with myeloma, for whom these drugs have dramatically improved outcomes, but relapses are frequent and acquired resistance to treatment eventually emerges. In addition, promising preclinical data obtained with proteasome inhibitors in models of solid tumours have not been confirmed in the clinic, indicating the importance of primary resistance. Investigation of the mechanisms of resistance is, therefore, essential to further maximize the utility of this class of drugs in the era of personalized medicine. Herein, we discuss the advances and challenges resulting from the introduction of proteasome inhibitors into the clinic.
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Affiliation(s)
- Elisabet E Manasanch
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 429, Houston, Texas 77030-4009, USA
| | - Robert Z Orlowski
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 429, Houston, Texas 77030-4009, USA
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 429, Houston, Texas 77030-4009, USA
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182
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Tracz-Gaszewska Z, Klimczak M, Biecek P, Herok M, Kosinski M, Olszewski MB, Czerwińska P, Wiech M, Wiznerowicz M, Zylicz A, Zylicz M, Wawrzynow B. Molecular chaperones in the acquisition of cancer cell chemoresistance with mutated TP53 and MDM2 up-regulation. Oncotarget 2017; 8:82123-82143. [PMID: 29137250 PMCID: PMC5669876 DOI: 10.18632/oncotarget.18899] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 06/13/2017] [Indexed: 01/17/2023] Open
Abstract
Utilizing the TCGA PANCAN12 dataset we discovered that cancer patients with mutations in TP53 tumor suppressor and overexpression of MDM2 oncogene exhibited decreased survival post treatment. Interestingly, in the case of breast cancer patients, this phenomenon correlated with high expression level of several molecular chaperones belonging to the HSPA, DNAJB and HSPC families. To verify the hypothesis that such a genetic background may promote chaperone-mediated chemoresistance, we employed breast and lung cancer cell lines that constitutively overexpressed heat shock proteins and have shown that HSPA1A/HSP70 and DNAJB1/HSP40 facilitated the binding of mutated p53 to the TAp73α protein. This chaperone-mediated mutated p53–TAp73α complex induced chemoresistance to DNA damaging reagents, like Cisplatin, Doxorubicin, Etoposide or Camptothecin. Importantly, when the MDM2 oncogene was overexpressed, heat shock proteins were displaced and a stable multiprotein complex comprising of mutated p53-TAp73α-MDM2 was formed, additionally amplifying cancer cells chemoresistance. Our findings demonstrate that molecular chaperones aid cancer cells in surviving the cytotoxic effect of chemotherapeutics and may have therapeutic implications.
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Affiliation(s)
- Zuzanna Tracz-Gaszewska
- International Institute of Molecular and Cell Biology, Warsaw, Poland.,Institute of Biochemistry and Biophysics, PAS, Warsaw, Poland
| | - Marta Klimczak
- International Institute of Molecular and Cell Biology, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Przemyslaw Biecek
- Faculty of Mathematics, Informatics, and Mechanics, University of Warsaw, Warsaw, Poland.,Faculty of Mathematics and Information Science, Warsaw University of Technology, Warsaw, Poland
| | - Marcin Herok
- International Institute of Molecular and Cell Biology, Warsaw, Poland.,Nencki Institute of Experimental Biology, PAS, Warsaw, Poland
| | - Marcin Kosinski
- Faculty of Mathematics and Information Science, Warsaw University of Technology, Warsaw, Poland.,Faculty of Mathematics, Informatics, and Mechanics, University of Warsaw, Warsaw, Poland
| | | | - Patrycja Czerwińska
- International Institute of Molecular and Cell Biology, Warsaw, Poland.,Laboratory of Gene Therapy, Department of Cancer Immunology, The Greater Poland Cancer Center, Poznan, Poland
| | - Milena Wiech
- International Institute of Molecular and Cell Biology, Warsaw, Poland
| | - Maciej Wiznerowicz
- Laboratory of Gene Therapy, Department of Cancer Immunology, The Greater Poland Cancer Center, Poznan, Poland
| | - Alicja Zylicz
- International Institute of Molecular and Cell Biology, Warsaw, Poland
| | - Maciej Zylicz
- International Institute of Molecular and Cell Biology, Warsaw, Poland
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183
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Chen Z, Eggerman TL, Bocharov AV, Baranova IN, Vishnyakova TG, Kurlander R, Patterson AP. Heat shock proteins stimulate APOBEC-3-mediated cytidine deamination in the hepatitis B virus. J Biol Chem 2017. [PMID: 28637869 DOI: 10.1074/jbc.m116.760637] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Apolipoprotein B mRNA-editing enzyme catalytic subunit 3 (APOBEC-3) enzymes are cytidine deaminases that are broadly and constitutively expressed. They are often up-regulated during carcinogenesis and candidate genes for causing the major single-base substitution in cancer-associated DNA mutations. Moreover, APOBEC-3s are involved in host innate immunity against many viruses. However, how APOBEC-3 mutational activity is regulated in normal and pathological conditions remains largely unknown. Heat shock protein levels are often elevated in both carcinogenesis and viral infection and are associated with DNA mutations. Here, using mutational analyses of hepatitis B virus (HBV), we found that Hsp90 stimulates deamination activity of APOBEC-3G (A3G), A3B, and A3C during co-expression in human liver HepG2 cells. Hsp90 directly stimulated A3G deamination activity when the purified proteins were used in in vitro reactions. Hsp40, -60, and -70 also had variable stimulatory effects in the cellular assay, but not in vitro Sequencing analyses further demonstrated that Hsp90 increased both A3G cytosine mutation efficiency on HBV DNA and total HBV mutation frequency. In addition, Hsp90 shifted A3G's cytosine region selection in HBV DNA and increased A3G's 5' nucleoside preference for deoxycytidine (5'-CC). Furthermore, the Hsp90 inhibitor 17-N-allylamino-17-demethoxygeldanamycin dose dependently inhibited A3G and A3B mutational activity on HBV viral DNA. Hsp90 knockdown by siRNA or by Hsp90 active-site mutation also decreased A3G activity. These results indicate that heat shock proteins, in particular Hsp90, stimulate APOBEC-3-mediated DNA deamination activity, suggesting a potential physiological role in carcinogenesis and viral innate immunity.
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Affiliation(s)
- Zhigang Chen
- From the Department of Laboratory Medicine, Clinical Center
| | - Thomas L Eggerman
- From the Department of Laboratory Medicine, Clinical Center.,the Division of Diabetes, Endocrinology, and Metabolic Diseases, NIDDK, and
| | | | | | | | | | - Amy P Patterson
- From the Department of Laboratory Medicine, Clinical Center, .,NHLBI, National Institutes of Health, Bethesda, Maryland 20892
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184
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Sun H, Zhuo X, Zhao X, Yang Y, Chen X, Yao C, Du A. The heat shock protein 90 of Toxoplasma gondii is essential for invasion of host cells and tachyzoite growth. ACTA ACUST UNITED AC 2017. [PMID: 28627357 PMCID: PMC5479401 DOI: 10.1051/parasite/2017023] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Toxoplasma gondii is an obligate intracellular apicomplexan parasite that infects almost all warm-blooded vertebrates. Heat shock proteins (HSP) regulate key signal transduction events in many organisms, and heat shock protein 90 (Hsp90) plays an important role in growth, development, and virulence in several parasitic protozoa. Here, we discovered increased transcription of the Hsp90 gene under conditions for bradyzoite differentiation, i.e. alkaline and heat shock conditions in vitro, suggesting that Hsp90 may be connected with bradyzoite development in T. gondii. A knockout of the TgHsp90 strain (ΔHsp90) and a complementation strain were constructed. The TgHsp90 knockout cells were found to be defective in host-cell invasion, were not able to proliferate in vitro in Vero cells, and did not show long-time survival in mice in vivo. These inabilities of the knockout parasites were restored upon complementation of TgHsp90. These data unequivocally show that TgHsp90 contributes to bradyzoite development, and to invasion and replication of T. gondii in host cells.
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Affiliation(s)
- Hongchao Sun
- Institute of Preventive Veterinary Medicine & Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, College of Animal Sciences, Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, Zhejiang University, Hangzhou 310058, PR China
| | - Xunhui Zhuo
- Institute of Preventive Veterinary Medicine & Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, College of Animal Sciences, Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, Zhejiang University, Hangzhou 310058, PR China
| | - Xianfeng Zhao
- Shenzhen Entry-exit Inspection and Quarantine Bureau, Shenzhen 518045, PR China
| | - Yi Yang
- Institute of Preventive Veterinary Medicine & Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, College of Animal Sciences, Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, Zhejiang University, Hangzhou 310058, PR China
| | - Xueqiu Chen
- Institute of Preventive Veterinary Medicine & Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, College of Animal Sciences, Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, Zhejiang University, Hangzhou 310058, PR China
| | - Chaoqun Yao
- Department of Biomedical Sciences and One Health Center for Zoonoses and Tropical Veterinary Medicine, Ross University School of Veterinary Medicine, P.O. Box 334, Basseterre, St. Kitts, West Indies
| | - Aifang Du
- Institute of Preventive Veterinary Medicine & Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, College of Animal Sciences, Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, Zhejiang University, Hangzhou 310058, PR China
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185
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Abstract
Mitochondria play a key role in ATP generation, redox homeostasis and regulation of apoptosis. Due to the essential role of mitochondria in metabolism and cell survival, targeting mitochondria in cancer cells is considered as an attractive therapeutic strategy. However, metabolic flexibility in cancer cells may enable the upregulation of compensatory pathways, such as glycolysis to support cancer cell survival when mitochondrial metabolism is inhibited. Thus, compounds capable of both targeting mitochondria and inhibiting glycolysis may be particularly useful to overcome such drug-resistant mechanism. This review provides an update on recent development in the field of targeting mitochondria and novel compounds that impact mitochondria, glycolysis or both. Key challenges in this research area and potential solutions are also discussed.
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186
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Wiechmann K, Müller H, König S, Wielsch N, Svatoš A, Jauch J, Werz O. Mitochondrial Chaperonin HSP60 Is the Apoptosis-Related Target for Myrtucommulone. Cell Chem Biol 2017; 24:614-623.e6. [PMID: 28457707 DOI: 10.1016/j.chembiol.2017.04.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 02/18/2017] [Accepted: 04/06/2017] [Indexed: 12/24/2022]
Abstract
The acylphloroglucinol myrtucommulone A (MC) causes mitochondrial dysfunctions by direct interference leading to apoptosis in cancer cells, but the molecular targets involved are unknown. Here, we reveal the chaperonin heat-shock protein 60 (HSP60) as a molecular target of MC that seemingly modulates HSP60-mediated mitochondrial functions. Exploiting an unbiased, discriminative protein fishing approach using MC as bait and mitochondrial lysates from leukemic HL-60 cells as target source identified HSP60 as an MC-binding protein. MC prevented HSP60-mediated reactivation of denatured malate dehydrogenase in a protein refolding assay. Interference of MC with HSP60 was accompanied by aggregation of two proteins in isolated mitochondria under heat shock that were identified as Lon protease-like protein (LONP) and leucine-rich PPR motif-containing protein (LRP130). Together, our results reveal HSP60 as a direct target of MC, proposing MC as a valuable tool for studying HSP60 biology and for evaluating its value as a target in related diseases, such as cancer.
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Affiliation(s)
- Katja Wiechmann
- Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, University of Jena, Philosophenweg 14, 07743 Jena, Germany
| | - Hans Müller
- Organic Chemistry II, Saarland University, Campus C 4.2, 66123 Saarbrücken, Germany
| | - Stefanie König
- Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, University of Jena, Philosophenweg 14, 07743 Jena, Germany
| | - Natalie Wielsch
- Research Group Mass Spectrometry and Proteomics, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, 07745 Jena, Germany
| | - Aleš Svatoš
- Research Group Mass Spectrometry and Proteomics, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, 07745 Jena, Germany
| | - Johann Jauch
- Organic Chemistry II, Saarland University, Campus C 4.2, 66123 Saarbrücken, Germany
| | - Oliver Werz
- Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, University of Jena, Philosophenweg 14, 07743 Jena, Germany.
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187
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Abstract
Viruses hijack host machineries for replicating themselves efficiently. Host protein quality control machineries (QC) not only assist protein folding to form bona fide proteins with active functions but also get rid of un/misfolded proteins via degradation to maintain the protein homeostasis. Previous studies have reported that viruses utilize QC at various steps for their lifecycles. Recently we defined Hsp70s and their cochaperones, DnaJs functions on Dengue lifecycle. Here we summarize the significance of QC on Dengue virus.
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188
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Nosareva OL, Ryazantseva NV, Stepovaya EA, Shakhristova EV, Stepanova EA, Gulaya VS. [The role of heat shock proteins 27 and 70 in redox-dependent regulation of apoptosis in Jurkat tumor cells]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2017; 62:670-673. [PMID: 28026811 DOI: 10.18097/pbmc20166206670] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Heat shock proteins Hsp) act as molecular chaperones, protecting enzymes and other proteins against reactive oxygen species. The objective of the study was to investigate the role of Hsp27 in maintaining the balance of the glutathione system and Hsp70 concentrations as well as in implementing Jurkat tumor cell apoptosis. Addition of the Hsp27 inhibitor KRIBB3 (5-(5-ethyl-2-hydroxy-4-methoxyphenyl)-4-(4-methoxyphenyl)-isoxazol) to Jurkat cells resulted in glutathione redox imbalance (increased GSSG and increased glutathione reductase activity), a decrease in Hsp70 concentrations, and also increased cell apoptosis as compared with to the intact cell culture. The proposed selective regulation of chaperone activity is a promising direction in regulating apoptosis at the cellular level.
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Affiliation(s)
- O L Nosareva
- Siberian State Medical University, Tomsk, Russia
| | | | | | | | | | - V S Gulaya
- Siberian State Medical University, Tomsk, Russia
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189
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Zimmermann M, Traxler D, Simader E, Bekos C, Dieplinger B, Lainscak M, Ankersmit HJ, Mueller T. In vitro Stability of Heat Shock Protein 27 in Serum and Plasma Under Different Pre-analytical Conditions: Implications for Large-Scale Clinical Studies. Ann Lab Med 2017; 36:353-7. [PMID: 27139608 PMCID: PMC4855055 DOI: 10.3343/alm.2016.36.4.353] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 02/18/2016] [Accepted: 04/01/2016] [Indexed: 11/19/2022] Open
Abstract
The effects of storage temperatures, repeated freeze-thaw cycles, or delays in separating plasma or serum from blood samples are largely unknown for heat shock protein 27 (HSP27). We evaluated (1) the imprecision of the HSP27 assay used in this study; (2) the in vitro stability of HSP27 in blood samples stored at 4℃ for up to 6 hr with immediate and delayed serum/plasma separation from cells; and (3) the in vitro stability of HSP27 in blood samples stored at -80℃ after repeated freeze-thaw cycles. The ELISA to detect HSP27 in this study showed a within-run CV of <9% and a total CV of <15%. After 4-6 hr of storage at 4℃, HSP27 concentrations remained stable when using serum tubes irrespective of sample handling, but HSP27 concentrations decreased by 25-45% when using EDTA plasma tubes. Compared with baseline HSP27, one freeze-thaw cycle had no effect on serum concentrations. However, plasma concentrations increased by 3.1-fold after one freeze-thaw cycle and by 7.3-fold after five freeze-thaw cycles. In conclusion, serum is an appropriate biological sample type for use in epidemiological and large-scale clinical studies.
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Affiliation(s)
- Matthias Zimmermann
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Medical University of Vienna, Vienna, Austria
| | - Denise Traxler
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Medical University of Vienna, Vienna, Austria.,Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Elisabeth Simader
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Medical University of Vienna, Vienna, Austria
| | - Christine Bekos
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Medical University of Vienna, Vienna, Austria.,Department of Gynaecology and Gynaecological Oncology, Gynecologic Cancer Unit, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Benjamin Dieplinger
- Department of Laboratory Medicine, Konventhospital Barmherzige Brueder Linz, Linz, Austria
| | - Mitja Lainscak
- Department of Cardiology, Department of Research and Education, General Hospital Celje, Celje, Slovenia.,Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Hendrik Jan Ankersmit
- Christian Doppler Laboratory for Cardiac and Thoracic Diagnosis and Regeneration, Medical University of Vienna, Vienna, Austria.,Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Thomas Mueller
- Department of Laboratory Medicine, Konventhospital Barmherzige Brueder Linz, Linz, Austria.
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190
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Mikami H, Saito Y, Okamoto N, Kakihana A, Kuga T, Nakayama Y. Requirement of Hsp105 in CoCl 2-induced HIF-1α accumulation and transcriptional activation. Exp Cell Res 2017; 352:225-233. [PMID: 28185835 DOI: 10.1016/j.yexcr.2017.02.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 01/29/2017] [Accepted: 02/05/2017] [Indexed: 10/20/2022]
Abstract
The mammalian stress protein Hsp105α protects cells from stress conditions. Several studies have indicated that Hsp105α is overexpressed in many types of solid tumors, which contain hypoxic microenvironments. However, the role of Hsp105α in hypoxic tumors remains largely unknown. We herein demonstrated the involvement of Hsp105α in HIF-1 functions induced by the hypoxia-mimetic agent CoCl2. While Hsp105α is mainly localized in the cytoplasm under normal conditions, a treatment with CoCl2 induces the nuclear localization of Hsp105α, which correlated with HIF-1α expression levels. The overexpression of degradation-resistant HIF-1α enhances the nuclear localization of Hsp105α without the CoCl2 treatment. The CoCl2-dependent transcriptional activation of HIF-1, which is measured using a reporter gene containing a HIF-responsive element, is reduced by the knockdown of Hsp105α. Furthermore, the CoCl2-induced accumulation of HIF-1α is enhanced by heat shock, which results in the nuclear localization of Hsp105, and is suppressed by the knockdown of Hsp105. Hsp105 associates with HIF-1α in CoCl2-treated cells. These results suggest that Hsp105α plays an important role in the functions of HIF-1 under hypoxic conditions, in which Hsp105α enhances the accumulation and transcriptional activity of HIF-1 through the HIF-1α-mediated nuclear localization of Hsp105α.
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Affiliation(s)
- Hiroki Mikami
- Department of Biochemistry and Molecular Biology, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Youhei Saito
- Department of Biochemistry and Molecular Biology, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan.
| | - Namiko Okamoto
- Department of Biochemistry and Molecular Biology, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Ayana Kakihana
- Department of Biochemistry and Molecular Biology, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Takahisa Kuga
- Department of Biochemistry and Molecular Biology, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Yuji Nakayama
- Department of Biochemistry and Molecular Biology, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan.
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191
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Abstract
The significant parallels between cell plasticity during embryonic development and carcinoma progression have helped us understand the importance of the epithelial-mesenchymal transition (EMT) in human disease. Our expanding knowledge of EMT has led to a clarification of the EMT program as a set of multiple and dynamic transitional states between the epithelial and mesenchymal phenotypes, as opposed to a process involving a single binary decision. EMT and its intermediate states have recently been identified as crucial drivers of organ fibrosis and tumor progression, although there is some need for caution when interpreting its contribution to metastatic colonization. Here, we discuss the current state-of-the-art and latest findings regarding the concept of cellular plasticity and heterogeneity in EMT. We raise some of the questions pending and identify the challenges faced in this fast-moving field.
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192
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3-Bromopyruvate treatment induces alterations of metabolic and stress-related pathways in glioblastoma cells. J Proteomics 2017; 152:329-338. [DOI: 10.1016/j.jprot.2016.11.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 11/15/2016] [Accepted: 11/18/2016] [Indexed: 12/27/2022]
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193
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Ophiobolin A Induces Autophagy and Activates the Mitochondrial Pathway of Apoptosis in Human Melanoma Cells. PLoS One 2016; 11:e0167672. [PMID: 27936075 PMCID: PMC5147944 DOI: 10.1371/journal.pone.0167672] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 11/20/2016] [Indexed: 12/31/2022] Open
Abstract
Ophiobolin A, a fungal toxin from Bipolaris species known to affect different cellular processes in plants, has recently been shown to have anti-cancer activity in mammalian cells. In the present study, we investigated the anti-proliferative effect of Ophiobolin A on human melanoma A375 and CHL-1 cell lines. This cellular model was chosen because of the incidence of melanoma malignant tumor on human population and its resistance to chemical treatments. Ophyobolin A strongly reduced cell viability of melanoma cells by affecting mitochondrial functionality. The toxin induced depolarization of mitochondrial membrane potential, reactive oxygen species production and mitochondrial network fragmentation, leading to autophagy induction and ultimately resulting in cell death by activation of the mitochondrial pathway of apoptosis. Finally, a comparative proteomic investigation on A375 cells allowed to identify several Ophiobolin A down-regulated proteins, which are involved in fundamental processes for cell homeostasis and viability.
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194
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Mouradian M, Ma IV, Vicente ED, Kikawa KD, Pardini RS. Docosahexaenoic Acid-mediated Inhibition of Heat Shock Protein 90-p23 Chaperone Complex and Downstream Client Proteins in Lung and Breast Cancer. Nutr Cancer 2016; 69:92-104. [PMID: 27880046 DOI: 10.1080/01635581.2017.1247886] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The molecular chaperone, heat shock protein 90 (Hsp90), is a critical regulator for the proper folding and stabilization of several client proteins, and is a major contributor to carcinogenesis. Specific Hsp90 inhibitors have been designed to target the ATP-binding site in order to prevent Hsp90 chaperone maturation. The current study investigated the effects of docosahexaenoic acid (DHA; C22:6 n-3) on Hsp90 function and downstream client protein expression. In vitro analyses of BT-474 human breast carcinoma and A549 human lung adenocarcinoma cell lines revealed dose-dependent decreases in intracellular ATP levels by DHA treatment, resulting in a significant reduction of Hsp90 and p23 association in both cell lines. Attenuation of the Hsp90-p23 complex led to the inhibition of Hsp90 client proteins, epidermal growth factor receptor 2 (ErbB2), and hypoxia-inducible factor 1α (HIF-1α). Similar results were observed when employing 2-deoxyglucose (2-DG), confirming that DHA and 2-DG, both independently and combined, can disturb Hsp90 molecular chaperone function. In vivo A549 xenograft analysis also demonstrated decreased expression levels of Hsp90-p23 association and diminished protein levels of ErbB2 and HIF-1α in mice supplemented with dietary DHA. These data support a role for dietary intervention to improve cancer therapy in tumors overexpressing Hsp90 and its client proteins.
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Affiliation(s)
- Michael Mouradian
- a Department of Biochemistry and Molecular Biology , University of Nevada , Reno , NV , USA
| | - Irvin V Ma
- a Department of Biochemistry and Molecular Biology , University of Nevada , Reno , NV , USA
| | - Erika D Vicente
- a Department of Biochemistry and Molecular Biology , University of Nevada , Reno , NV , USA
| | - Keith D Kikawa
- a Department of Biochemistry and Molecular Biology , University of Nevada , Reno , NV , USA
| | - Ronald S Pardini
- a Department of Biochemistry and Molecular Biology , University of Nevada , Reno , NV , USA
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195
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Zhong YH, Cheng HZ, Peng H, Tang SC, Wang P. Heat shock factor 2 is associated with the occurrence of lung cancer by enhancing the expression of heat shock proteins. Oncol Lett 2016; 12:5106-5112. [PMID: 28101237 PMCID: PMC5228092 DOI: 10.3892/ol.2016.5368] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 10/07/2016] [Indexed: 12/11/2022] Open
Abstract
Cancer is the leading cause of morbidity and mortality worldwide, particularly lung cancer. Heat shock proteins and their upstream heat shock factors are involved in the occurrence of cancer and have been widely researched. However, the role of heat shock factor 2 (HSF2) in lung cancer remains unclear. In the present study, expression levels of HSF2 in lung cancer tissues from 50 lung cancer patients were detected by reverse transcription quantitative polymerase chain reaction, and 76% (38/50) were upregulated compared with the matched normal tissues. This suggested possible involvement of HSF2 in lung cancer. To additionally investigate the role of HSF2 in lung cancer occurrence, a plasmid encoding HSF2 was constructed. HSF2 was over expressed in normal lung epithelial BEAS-2B cells and lung cancer A549 cells. The results showed that HSF2 overexpression promoted cell proliferation and cell migration in BEAS-2B and A549 cells. Additional experiments showed that the HSF2-induced cell proliferation and cell migration were dependent on induction of HSPs, particularly HSP27 and HSP90, as co-transfection of HSP27 small interfering RNA (siRNA) or HSP90 siRNA attenuated HSF2-induced cell growth and migration. In conclusion, the present study showed that HSF2 is aberrantly expressed in lung cancer, and it may be an upstream regulator of HSPs, which may strongly affect cell growth and cell migration. Additional studies are required to explain the detailed mechanism between lung cancer, HSF2, HSPs and other possible signaling pathways.
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Affiliation(s)
- Yun-Hua Zhong
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China; Cadres Treatment Section, The First People's Hospital of Yunnan Province, Kunming, Yunnan 510032, P.R. China
| | - Hong-Zhong Cheng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China; Thoracic Surgery, The First People's Hospital of Yunnan Province, Kunming, Yunnan 510032, P.R. China
| | - Hao Peng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China; Thoracic Surgery, The First People's Hospital of Yunnan Province, Kunming, Yunnan 510032, P.R. China
| | - Shi-Cong Tang
- Cadres Health Care, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Ping Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China; Thoracic Surgery, The First People's Hospital of Yunnan Province, Kunming, Yunnan 510032, P.R. China
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196
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Xu C, Zhou D, Pan F, Liu Y, Zhang D, Lin A, Miao X, Ni Y, Lv D, Zhang S, Li X, Zhu Y, Lai M. A novel variant on chromosome 6p21.1 is associated with the risk of developing colorectal cancer: a two-stage case-control study in Han Chinese. BMC Cancer 2016; 16:807. [PMID: 27756247 PMCID: PMC5069896 DOI: 10.1186/s12885-016-2843-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 10/06/2016] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Genes in inflammatory pathways play a pivotal role in the development of colorectal cancer. We conducted a two-stage case-control study and aimed at screening the colorectal cancer-associated genetic variations in inflammatory genes. METHODS Twenty-three candidate variants were genotyped in 952 primary colorectal cancer cases and 875 cancer-free controls from eastern China. Promising single nucleotide polymorphisms were further genotyped in 518 cases and 554 controls from middle China. Expression quantitative trait loci and differential gene expression analyses were performed for the associated gene. RESULTS rs2282151 presented consistently significant associations with the risk of colorectal cancer in both stages (odds ratio (95 % confidence interval) = 1.30 (1.16-1.46), risk allele = C, P combined = 8.9E-6). Gene expression quantitative trait loci analyzes uncovered consistent cis-regulatory signals which showed that the C allele of rs2282151 was associated with increased expression level of heat shock protein 90 alpha family class B member 1 (HSP90AB1). Then we found that the mRNA expression levels of HSP90AB1 were significantly higher in tumor tissues than normal tissues (fold-change = 1.83) in 28 pairs of colorectal tissue samples. The expression difference was consistent with data from online datasets. Additionally, we observed notable peaks of H3K27ac and H3K4me3 near the first intron of HSP90AB1 using ChIP-seq data from multiple cell lines (including HCT116). CONCLUSIONS Our findings indicate that the C allele of the novel colorectal cancer-associated variant rs2282151 is associated with increased expression levels of HSP90AB1, which is expressed higher in colorectal tumor tissues than in normal tissues.
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Affiliation(s)
- Chunxiao Xu
- Department of Epidemiology and Biostatistics, School of Public Health, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang Province, China.,Department of Chronic Non-Communicable Diseases Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang Province, China
| | - Dan Zhou
- Department of Pathology, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, China.,Key Laboratory of Disease Proteomics of Zhejiang Province and Department of Pathology, School of Medicine, Zhejiang University, Hangzhou, China
| | - Feixia Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang Province, China
| | - Yi Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang Province, China
| | - Dandan Zhang
- Department of Pathology, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, China.,Key Laboratory of Disease Proteomics of Zhejiang Province and Department of Pathology, School of Medicine, Zhejiang University, Hangzhou, China
| | - Aifen Lin
- Human Tissue Bank, Taizhou Hospital of Zhejiang Province, Zhejiang, China.,Medical Research Center, Taizhou Hospital of Zhejiang Province, Zhejiang, China
| | - Xiaoping Miao
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - Yaqin Ni
- Department of Epidemiology and Biostatistics, School of Public Health, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang Province, China
| | - Duo Lv
- Department of Epidemiology and Biostatistics, School of Public Health, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang Province, China
| | - Shuai Zhang
- Department of Pathology, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, China.,Key Laboratory of Disease Proteomics of Zhejiang Province and Department of Pathology, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaobo Li
- Department of Computer Science and Technology, College of Engineering, Lishui University, Lishui, Zhejiang, China
| | - Yimin Zhu
- Department of Epidemiology and Biostatistics, School of Public Health, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang Province, China.
| | - Maode Lai
- Department of Pathology, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, China. .,Key Laboratory of Disease Proteomics of Zhejiang Province and Department of Pathology, School of Medicine, Zhejiang University, Hangzhou, China.
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197
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Fang CT, Kuo HH, Pan TS, Yu FC, Yih LH. HSP70 regulates the function of mitotic centrosomes. Cell Mol Life Sci 2016; 73:3949-60. [PMID: 27137183 PMCID: PMC11108311 DOI: 10.1007/s00018-016-2236-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 04/16/2016] [Accepted: 04/21/2016] [Indexed: 10/21/2022]
Abstract
To establish a functional bipolar mitotic spindle, the centrosome expands and matures, acquiring enhanced activities for microtubule (MT) nucleation and assembly at the onset of mitosis. However, the regulatory mechanisms of centrosome maturation and MT assembly from the matured centrosome are largely unknown. In this study, we showed that heat shock protein (HSP) 70 considerably accumulates at the mitotic centrosome during prometaphase to metaphase and is required for bipolar spindle assembly. Inhibition or depletion of HSP70 impaired the function of mitotic centrosome and disrupted MT nucleation and polymerization from the spindle pole, and may thus result in formation of abnormal mitotic spindles. In addition, HSP70 may associate with NEDD1 and γ-tubulin, two pericentriolar material (PCM) components essential for centrosome maturation and MT nucleation. Loss of HSP70 function disrupted the interaction between NEDD1 and γ-tubulin, and reduced their accumulation at the mitotic centrosome. Our results thus demonstrate a role for HSP70 in regulating centrosome integrity during mitosis, and indicate that HSP70 is required for the maintenance of a functional mitotic centrosome that supports the assembly of a bipolar mitotic spindle.
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Affiliation(s)
- Chieh-Ting Fang
- Department of Life Science, National Taiwan University, Taipei, Taiwan
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, 115, Taiwan
| | - Hsiao-Hui Kuo
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, 115, Taiwan
| | - Tiffany S Pan
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, 115, Taiwan
| | - Fu-Chi Yu
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, 115, Taiwan
| | - Ling-Huei Yih
- Department of Life Science, National Taiwan University, Taipei, Taiwan.
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, 115, Taiwan.
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198
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Rappa F, Pitruzzella A, Marino Gammazza A, Barone R, Mocciaro E, Tomasello G, Carini F, Farina F, Zummo G, Conway de Macario E, Macario AJ, Cappello F. Quantitative patterns of Hsps in tubular adenoma compared with normal and tumor tissues reveal the value of Hsp10 and Hsp60 in early diagnosis of large bowel cancer. Cell Stress Chaperones 2016; 21:927-33. [PMID: 27491302 PMCID: PMC5003810 DOI: 10.1007/s12192-016-0721-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 07/12/2016] [Accepted: 07/13/2016] [Indexed: 02/02/2023] Open
Abstract
Large bowel carcinogenesis involves accumulation of genetic alterations leading to transformation of normal mucosa into dysplasia and, lastly, adenocarcinoma. It is pertinent to elucidate the molecular changes occurring in the pre-neoplastic lesions to facilitate early diagnosis and treatment. Heat shock proteins (Hsps), many of which are molecular chaperones, are implicated in carcinogenesis, and their variations with tumor progression encourage their study as biomarkers. There are many reports on Hsps and cancer but none to our knowledge on their systematic quantification in pre-neoplastic lesions of the large bowel. We performed immunohistochemical determinations of Hsp10, Hsp60, Hsp70, and Hsp90 in biopsies of large bowel tubular adenomas with moderate grade of dysplasia and compared to normal mucosa and adenocarcinoma with a moderate grade of differentiation (G2). A significant elevation of Hsp10 and Hsp60 only, i.e., in the absence of elevation of Hsp70 or Hsp90, in both epithelium and lamina propria was found in tubular adenoma by comparison with normal mucosa. In contrast, adenocarcinoma was characterized by the highest levels of Hsp10 and Hsp60 in epithelium and lamina propria, accompanied by the highest levels of Hsp70 only in epithelium and of Hsp90 only in lamina propria, by comparison with normal and tubular adenoma counterparts. Hsp10 and Hsp60 are promising biomarkers for early diagnosis of tubular adenoma and for its differentiation from more advanced malignant lesions. Hsp10 and Hsp60 may be implicated in carcinogenesis from its very early steps and, thus, are potentially convenient targets for therapy.
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Affiliation(s)
- Francesca Rappa
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy, University of Palermo, Via del Vespro 129, 90127, Palermo, Italy.
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy.
| | - Alessandro Pitruzzella
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy, University of Palermo, Via del Vespro 129, 90127, Palermo, Italy
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
| | - Antonella Marino Gammazza
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy, University of Palermo, Via del Vespro 129, 90127, Palermo, Italy
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
| | - Rosario Barone
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy, University of Palermo, Via del Vespro 129, 90127, Palermo, Italy
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
| | - Emanuele Mocciaro
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy, University of Palermo, Via del Vespro 129, 90127, Palermo, Italy
| | - Giovanni Tomasello
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy, University of Palermo, Via del Vespro 129, 90127, Palermo, Italy
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
| | - Francesco Carini
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy, University of Palermo, Via del Vespro 129, 90127, Palermo, Italy
| | - Felicia Farina
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy, University of Palermo, Via del Vespro 129, 90127, Palermo, Italy
| | - Giovanni Zummo
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy, University of Palermo, Via del Vespro 129, 90127, Palermo, Italy
| | - Everly Conway de Macario
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
- Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore, Baltimore, MD, USA
- IMET, Columbus Center, Baltimore, MD, USA
| | - Alberto Jl Macario
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
- Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore, Baltimore, MD, USA
- IMET, Columbus Center, Baltimore, MD, USA
| | - Francesco Cappello
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy, University of Palermo, Via del Vespro 129, 90127, Palermo, Italy
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
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199
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Chini MG, Malafronte N, Vaccaro MC, Gualtieri MJ, Vassallo A, Vasaturo M, Castellano S, Milite C, Leone A, Bifulco G, De Tommasi N, Dal Piaz F. Identification of Limonol Derivatives as Heat Shock Protein 90 (Hsp90) Inhibitors through a Multidisciplinary Approach. Chemistry 2016; 22:13236-50. [DOI: 10.1002/chem.201602242] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Indexed: 01/23/2023]
Affiliation(s)
- Maria G. Chini
- Department of Pharmacy; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Nicola Malafronte
- Department of Pharmacy; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Maria C. Vaccaro
- Department of Pharmacy; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Maria J. Gualtieri
- Department of Pharmacy; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
- Department of Pharmacognosy and Organic Drug; University of Los Andes; Sector Campo de Oro, detrás del IAHULA 5101 Mérida Venezuela
| | - Antonio Vassallo
- Department of Science; University of Basilicata; Viale dell'Ateneo Lucano 10 85100 Potenza Italy
| | - Michele Vasaturo
- Department of Pharmacy; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
- PhD Program in Drug Discovery and Development; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Sabrina Castellano
- Department of Pharmacy; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
- Department of Medicine and Surgery; University of Salerno; Via Allende 84081 Baronissi Italy
| | - Ciro Milite
- Department of Pharmacy; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Antonietta Leone
- Department of Pharmacy; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Giuseppe Bifulco
- Department of Pharmacy; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Nunziatina De Tommasi
- Department of Pharmacy; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Fabrizio Dal Piaz
- Department of Pharmacy; University of Salerno; Via Giovanni Paolo II 132 84084 Fisciano Italy
- Department of Medicine and Surgery; University of Salerno; Via Allende 84081 Baronissi Italy
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200
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Abstract
The chaperome constitutes a broad family of molecular chaperones and co-chaperones that facilitate the folding, refolding, and degradation of the proteome. Heat shock protein 90 (Hsp90) promotes the folding of numerous oncoproteins to aid survival of malignant phenotypes, and small molecule inhibitors of the Hsp90 chaperone complex offer a viable approach to treat certain cancers. One therapeutic attribute of this approach is the selectivity of these molecules to target high affinity oncogenic Hsp90 complexes present in tumor cells, which are absent in nontransformed cells. This selectivity has given rise to the idea that disease may contribute to forming a stress chaperome that is functionally distinct in its ability to interact with small molecule Hsp90 modulators. Consistent with this premise, modulating Hsp90 improves clinically relevant endpoints of diabetic peripheral neuropathy but has little impact in nondiabetic nerve. The concept of targeting the "diabetic chaperome" to treat diabetes and its complications is discussed.
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Affiliation(s)
- Rick T Dobrowsky
- Department of Pharmacology and Toxicology, The University of Kansas, 5064 Malott Hall 1251 Wescoe Hall Dr., Lawrence, KS, 66045, USA.
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