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Boyd RA, Majumder S, Stiban J, Mavodza G, Straus AJ, Kempelingaiah SK, Reddy V, Hannun YA, Obeid LM, Senkal CE. The heat shock protein Hsp27 controls mitochondrial function by modulating ceramide generation. Cell Rep 2023; 42:113081. [PMID: 37689067 PMCID: PMC10591768 DOI: 10.1016/j.celrep.2023.113081] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 07/24/2023] [Accepted: 08/18/2023] [Indexed: 09/11/2023] Open
Abstract
Sphingolipids have key functions in membrane structure and cellular signaling. Ceramide is the central molecule of the sphingolipid metabolism and is generated by ceramide synthases (CerS) in the de novo pathway. Despite their critical function, mechanisms regulating CerS remain largely unknown. Using an unbiased proteomics approach, we find that the small heat shock protein 27 (Hsp27) interacts specifically with CerS1 but not other CerS. Functionally, our data show that Hsp27 acts as an endogenous inhibitor of CerS1. Wild-type Hsp27, but not a mutant deficient in CerS1 binding, inhibits CerS1 activity. Additionally, silencing of Hsp27 enhances CerS1-generated ceramide accumulation in cells. Moreover, phosphorylation of Hsp27 modulates Hsp27-CerS1 interaction and CerS1 activity in acute stress-response conditions. Biologically, we show that Hsp27 knockdown impedes mitochondrial function and induces lethal mitophagy in a CerS1-dependent manner. Overall, we identify an important mode of CerS1 regulation and CerS1-mediated mitophagy through protein-protein interaction with Hsp27.
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Affiliation(s)
- Rowan A Boyd
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, VA 23398, USA
| | - Saurav Majumder
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, VA 23398, USA
| | - Johnny Stiban
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, VA 23398, USA; Department of Biology and Biochemistry, Birzeit University, Ramallah, Palestine
| | - Grace Mavodza
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, VA 23398, USA
| | - Alexandra J Straus
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, VA 23398, USA
| | - Sachin K Kempelingaiah
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, VA 23398, USA
| | - Varun Reddy
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY 11794, USA
| | - Yusuf A Hannun
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY 11794, USA; Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Lina M Obeid
- Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA; Northport Veterans Affairs Medical Center, Northport, NY 11768, USA
| | - Can E Senkal
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, VA 23398, USA; Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23398, USA.
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2
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Sottile ML, Cuello-Carrión FD, Gómez LC, Semino S, Ibarra J, García MB, Gonzalez L, Vargas-Roig LM, Nadin SB. DNA Damage Repair Proteins, HSP27, and Phosphorylated-HSP90α as Predictive/Prognostic Biomarkers of Platinum-based Cancer Chemotherapy: An Exploratory Study. Appl Immunohistochem Mol Morphol 2022; 30:425-434. [PMID: 35639358 DOI: 10.1097/pai.0000000000001037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 04/25/2022] [Indexed: 11/27/2022]
Abstract
Platinum analogs are commonly used for cancer treatment. There is increasing interest in finding biomarkers which could predict and overcome resistance, because to date there is no reliable predictive/prognostic marker for these compounds. Here we studied the immunohistochemical expression of proteins involved in DNA damage response and repair (γH2AX, 53BP1, ERCC1, MLH1, and MSH2) in primary tumor tissues from patients treated with platinum-based chemotherapy. Levels and localization of Heat Shock Protein (HSP)27 and phospho-(Thr5/7)-HSP90α (p-HSP90α) were also determined. The implications in clinical response, disease-free survival and overall survival were analyzed. High γH2AX and 53BP1 expressions were associated with poor clinical response. Nuclear p-HSP90α, as well as nuclear absence and low cytoplasmic expression of HSP27 correlated with good response. Patients with high γH2AX and high cytoplasmic HSP27 expressions had shorter overall survival and disease-free survival. MLH1, MSH2, or ERCC1 were not associated with clinical response or survival. We report the potential utility of p-HSP90α, HSP27, γH2AX, and 53BP1 as predictive/prognostic markers for platinum-based chemotherapy. We present the first study that evaluates the predictive and prognostic value of p-HSP90α in primary tumors. Our research opens new possibilities for clinical oncology and shows the usefulness of immunohistochemistry for predicting chemotherapy response and prognosis in cancer.
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Affiliation(s)
- Mayra L Sottile
- Tumor Biology Laboratory
- Medical Sciences School, Mendoza University
| | | | - Laura C Gómez
- Tumor Biology Laboratory
- Medical Sciences School, Mendoza University
| | | | - Jorge Ibarra
- Regional Integration Cancer Center, Mendoza, Argentina
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3
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Rajeswaren V, Wong JO, Yabroudi D, Nahomi RB, Rankenberg J, Nam MH, Nagaraj RH. Small Heat Shock Proteins in Retinal Diseases. Front Mol Biosci 2022; 9:860375. [PMID: 35480891 PMCID: PMC9035800 DOI: 10.3389/fmolb.2022.860375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 03/11/2022] [Indexed: 11/29/2022] Open
Abstract
This review summarizes the latest findings on small heat shock proteins (sHsps) in three major retinal diseases: glaucoma, diabetic retinopathy, and age-related macular degeneration. A general description of the structure and major cellular functions of sHsps is provided in the introductory remarks. Their role in specific retinal diseases, highlighting their regulation, role in pathogenesis, and possible use as therapeutics, is discussed.
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Affiliation(s)
- Vivian Rajeswaren
- Department of Ophthalmology, Sue Anschutz-Rodgers Eye Center, School of Medicine, Aurora, CO, United States
| | - Jeffrey O. Wong
- Department of Ophthalmology, Sue Anschutz-Rodgers Eye Center, School of Medicine, Aurora, CO, United States
| | - Dana Yabroudi
- Department of Ophthalmology, Sue Anschutz-Rodgers Eye Center, School of Medicine, Aurora, CO, United States
| | - Rooban B. Nahomi
- Department of Ophthalmology, Sue Anschutz-Rodgers Eye Center, School of Medicine, Aurora, CO, United States
| | - Johanna Rankenberg
- Department of Ophthalmology, Sue Anschutz-Rodgers Eye Center, School of Medicine, Aurora, CO, United States
| | - Mi-Hyun Nam
- Department of Ophthalmology, Sue Anschutz-Rodgers Eye Center, School of Medicine, Aurora, CO, United States
- *Correspondence: Mi-Hyun Nam, ; Ram H. Nagaraj,
| | - Ram H. Nagaraj
- Department of Ophthalmology, Sue Anschutz-Rodgers Eye Center, School of Medicine, Aurora, CO, United States
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado, Aurora, CO, United States
- *Correspondence: Mi-Hyun Nam, ; Ram H. Nagaraj,
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4
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Lin X, Shuang E, Chen X. Metal-organic framework/3,3',5,5'-tetramethylbenzidine based multidimensional spectral array platform for sensitive discrimination of protein phosphorylation. J Colloid Interface Sci 2021; 602:513-519. [PMID: 34144305 DOI: 10.1016/j.jcis.2021.06.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/21/2021] [Accepted: 06/03/2021] [Indexed: 10/21/2022]
Abstract
A multifunctional metal-organic framework (MOF) hybrid Zr-FeTCPP-MOF is fabricated with 2-aminoterephthalic acid (NH2-BDC) and Fe (III) meso-Tetra (4-carboxyphenyl) porphine chloride (FeTCPPCl) participating in the coordination to Zr6 clusters via one-pot hydrothermal method. The adsorption of phosphoproteins on the surface of Zr-FeTCPP-MOF hybrid cause the chances on the absorbance (Abs), fluorescence (FL) and resonance light scattering (RLS) signals of Zr-FeTCPP-MOF/3,3',5,5'-Tetramethylbenzidine (TMB) system, and an array sensing platform is successfully built for sensitive identification of protein phosphorylation based on the three-dimensional spectral changes of MOF/TMB sensing system induced by the variations on the structure, size, and phosphorylation site of phosphoproteins. This array sensing system is robust in recognizing different phosphoprotein species, and shows high sensitivity in discriminating similar phosphoproteins of different phosphorylation distribution, i.e., caseins (α-, β- and κ-cas). The detection limit of this array sensing platform to individual phosphoprotein is low down to 5 nM. The practical application of this MOF/TMB-base sensing system is substantially demonstrated by identifying tau peptides with different phosphorylation distribution, and distinguishing cancer cells of abnormal phosphorylations from normal cells. This work proves the reliability, sensitivity, and practicality of the MOF/TMB-base sensing system platform for the diagnosis of phosphorylation-related diseases in clinical trials.
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Affiliation(s)
- Xin Lin
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, Liaoning, China; Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box332, Shenyang 110819, Liaoning, China
| | - E Shuang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box332, Shenyang 110819, Liaoning, China
| | - Xuwei Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box332, Shenyang 110819, Liaoning, China.
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5
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Verma A, Sumi S, Seervi M. Heat shock proteins-driven stress granule dynamics: yet another avenue for cell survival. Apoptosis 2021; 26:371-384. [PMID: 33978921 DOI: 10.1007/s10495-021-01678-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2021] [Indexed: 12/24/2022]
Abstract
Heat shock proteins (HSPs) are evolutionary conserved 'stress-response' proteins that facilitate cell survival against various adverse conditions. HSP-mediated cytoprotection was hitherto reported to occur principally in two ways. Firstly, HSPs interact directly or indirectly with apoptosis signaling components and suppress apoptosis. Secondly, through chaperon activity, HSPs suppress proteotoxicity and maintain protein-homeostasis. Recent studies highlight the interaction of HSPs with cytoplasmic stress granules (SGs). SGs are conserved cytoplasmic mRNPs granules that aid in cell survival under stressful conditions. We primarily aim to describe the distinct cell survival strategy mediated by HSPs as the crucial regulators of SGs assembly and disassembly. Based on the growing evidence, HSPs and associated co-chaperones act as important determinants of SG assembly, composition and dissolution. Under cellular stress, as a 'stress-coping mechanism', the formation of SGs reprograms protein translation machinery and modulates signaling pathways indispensable for cell survival. Besides their role in suppressing apoptosis, HSPs also regulate protein-homeostasis by their chaperone activity as well as by their tight regulation of SG dynamics. The intricate molecular signaling in and around the nexus of HSPs-SGs and its importance in diseases has to be unearthed. These studies have significant implications in the management of chronic diseases such as cancer and neurodegenerative diseases where SGs possess pathological functions.
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Affiliation(s)
- Akanksha Verma
- Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India
| | - S Sumi
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, Kerala, India
| | - Mahendra Seervi
- Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India.
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6
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Pohl SÖG, Pervaiz S, Dharmarajan A, Agostino M. Gene expression analysis of heat-shock proteins and redox regulators reveals combinatorial prognostic markers in carcinomas of the gastrointestinal tract. Redox Biol 2019; 25:101060. [PMID: 30578123 PMCID: PMC6859565 DOI: 10.1016/j.redox.2018.11.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/14/2018] [Accepted: 11/25/2018] [Indexed: 01/18/2023] Open
Abstract
Heat shock proteins (HSPs) are a large family of ubiquitously expressed proteins with diverse functions, including protein assembly and folding/unfolding. These proteins have been associated with the progression of various gastrointestinal tumours. Dysregulation of cellular redox has also been associated with gastrointestinal carcinogenesis, however, a link between HSPs and dysregulation of cellular redox in carcinogenesis remains unclear. In this study, we analysed mRNA co-expression and methylation patterns, as well as performed survival analysis and gene set enrichment analysis, on gastrointestinal cancer data sets (oesophageal, stomach and colorectal carcinomas) to determine whether HSP activity and cellular redox dysregulation are linked. A widespread relationship between HSPs and cellular redox was identified, with specific combinatorial co-expression patterns demonstrated to significantly alter patient survival outcomes. This comprehensive analysis provides the foundation for future studies aimed at deciphering the mechanisms of cooperativity between HSPs and redox regulatory enzymes, which may be a target for future therapeutic intervention for gastrointestinal tumours.
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Affiliation(s)
- Sebastian Öther-Gee Pohl
- Stem Cell and Cancer Biology Laboratory, Curtin University, Perth, WA, Australia; School of Pharmacy and Biomedical Sciences, Curtin University, Perth, WA 6102, Australia; Curtin Health and Innovation Research Institute, Curtin University, Perth, WA 6102, Australia
| | - Shazib Pervaiz
- School of Pharmacy and Biomedical Sciences, Curtin University, Perth, WA 6102, Australia; Department of Physiology and Medical Science Cluster Cancer Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore; NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore 117456, Singapore; National University Cancer Institute, National University Health System, Singapore 119074, Singapore
| | - Arun Dharmarajan
- Stem Cell and Cancer Biology Laboratory, Curtin University, Perth, WA, Australia; School of Pharmacy and Biomedical Sciences, Curtin University, Perth, WA 6102, Australia; Curtin Health and Innovation Research Institute, Curtin University, Perth, WA 6102, Australia
| | - Mark Agostino
- Stem Cell and Cancer Biology Laboratory, Curtin University, Perth, WA, Australia; School of Pharmacy and Biomedical Sciences, Curtin University, Perth, WA 6102, Australia; Curtin Health and Innovation Research Institute, Curtin University, Perth, WA 6102, Australia; Curtin Institute for Computation, Curtin University, Perth, WA 6102, Australia.
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7
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Alimbetov D, Askarova S, Umbayev B, Davis T, Kipling D. Pharmacological Targeting of Cell Cycle, Apoptotic and Cell Adhesion Signaling Pathways Implicated in Chemoresistance of Cancer Cells. Int J Mol Sci 2018; 19:ijms19061690. [PMID: 29882812 PMCID: PMC6032165 DOI: 10.3390/ijms19061690] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 05/31/2018] [Accepted: 06/01/2018] [Indexed: 12/11/2022] Open
Abstract
Chemotherapeutic drugs target a physiological differentiating feature of cancer cells as they tend to actively proliferate more than normal cells. They have well-known side-effects resulting from the death of highly proliferative normal cells in the gut and immune system. Cancer treatment has changed dramatically over the years owing to rapid advances in oncology research. Developments in cancer therapies, namely surgery, radiotherapy, cytotoxic chemotherapy and selective treatment methods due to better understanding of tumor characteristics, have significantly increased cancer survival. However, many chemotherapeutic regimes still fail, with 90% of the drug failures in metastatic cancer treatment due to chemoresistance, as cancer cells eventually develop resistance to chemotherapeutic drugs. Chemoresistance is caused through genetic mutations in various proteins involved in cellular mechanisms such as cell cycle, apoptosis and cell adhesion, and targeting those mechanisms could improve outcomes of cancer therapy. Recent developments in cancer treatment are focused on combination therapy, whereby cells are sensitized to chemotherapeutic agents using inhibitors of target pathways inducing chemoresistance thus, hopefully, overcoming the problems of drug resistance. In this review, we discuss the role of cell cycle, apoptosis and cell adhesion in cancer chemoresistance mechanisms, possible drugs to target these pathways and, thus, novel therapeutic approaches for cancer treatment.
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Affiliation(s)
- Dauren Alimbetov
- Laboratory of bioengineering and regenerative medicine, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave, Z05H0P9 Astana, Kazakhstan.
| | - Sholpan Askarova
- Laboratory of bioengineering and regenerative medicine, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave, Z05H0P9 Astana, Kazakhstan.
| | - Bauyrzhan Umbayev
- Laboratory of bioengineering and regenerative medicine, Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Ave, Z05H0P9 Astana, Kazakhstan.
| | - Terence Davis
- Division of Cancer and Genetics, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XN, UK.
| | - David Kipling
- Division of Cancer and Genetics, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XN, UK.
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Hudecova S, Markova J, Simko V, Csaderova L, Stracina T, Sirova M, Fojtu M, Svastova E, Gronesova P, Pastorek M, Novakova M, Cholujova D, Kopacek J, Pastorekova S, Sedlak J, Krizanova O. Sulforaphane-induced apoptosis involves the type 1 IP3 receptor. Oncotarget 2018; 7:61403-61418. [PMID: 27528021 PMCID: PMC5308660 DOI: 10.18632/oncotarget.8968] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 04/15/2016] [Indexed: 12/15/2022] Open
Abstract
In this study we show that anti-tumor effect of sulforaphane (SFN) is partially realized through the type 1 inositol 1,4,5-trisphosphate receptor (IP3R1). This effect was verified in vitro on three different stable cell lines and also in vivo on the model of nude mice with developed tumors. Early response (6 hours) of A2780 ovarian carcinoma cells to SFN treatment involves generation of mitochondrial ROS and increased transcription of NRF2 and its downstream regulated genes including heme oxygenase 1, NAD(P)H:quinine oxidoreductase 1, and KLF9. Prolonged SFN treatment (24 hours) upregulated expression of NRF2 and IP3R1. SFN induces a time-dependent phosphorylation wave of HSP27. Use of IP3R inhibitor Xestospongin C (Xest) attenuates both SFN-induced apoptosis and the level of NRF2 protein expression. In addition, Xest partially attenuates anti-tumor effect of SFN in vivo. SFN-induced apoptosis is completely inhibited by silencing of IP3R1 gene but only partially blocked by silencing of NRF2; silencing of IP3R2 and IP3R3 had no effect on these cells. Xest inhibitor does not significantly modify SFN-induced increase in the rapid activity of ARE and AP1 responsive elements. We found that Xest effectively reverses the SFN-dependent increase of nuclear content and decrease of reticular calcium content. In addition, immunofluorescent staining with IP3R1 antibody revealed that SFN treatment induces translocation of IP3R1 to the nucleus. Our results clearly show that IP3R1 is involved in SFN-induced apoptosis through the depletion of reticular calcium and modulation of transcription factors through nuclear calcium up-regulation.
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Affiliation(s)
- Sona Hudecova
- Institute of Clinical and Translational Research, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Jana Markova
- Institute of Clinical and Translational Research, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Veronika Simko
- Institute of Virology, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Lucia Csaderova
- Institute of Virology, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Tibor Stracina
- Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Marta Sirova
- Institute of Clinical and Translational Research, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Michaela Fojtu
- Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Eliska Svastova
- Institute of Virology, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Paulina Gronesova
- Cancer Research Institute, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Michal Pastorek
- Cancer Research Institute, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Marie Novakova
- Department of Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Dana Cholujova
- Cancer Research Institute, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Juraj Kopacek
- Institute of Virology, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Silvia Pastorekova
- Institute of Virology, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Jan Sedlak
- Cancer Research Institute, Biomedical Research Center, SAS, Bratislava, Slovakia
| | - Olga Krizanova
- Institute of Clinical and Translational Research, Biomedical Research Center, SAS, Bratislava, Slovakia
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10
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Trivedi R, Mishra DP. Trailing TRAIL Resistance: Novel Targets for TRAIL Sensitization in Cancer Cells. Front Oncol 2015; 5:69. [PMID: 25883904 PMCID: PMC4382980 DOI: 10.3389/fonc.2015.00069] [Citation(s) in RCA: 168] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 03/09/2015] [Indexed: 12/15/2022] Open
Abstract
Resistance to chemotherapeutic drugs is the major hindrance in the successful cancer therapy. The tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a member of the tumor necrosis factor (TNF) family of ligands, which initiates apoptosis in cancer cells through interaction with the death receptors DR4 and DR5. TRAIL is perceived as an attractive chemotherapeutic agent as it specifically targets cancer cells while sparing the normal cells. However, TRAIL therapy has a major limitation as a large number of the cancer develop resistance toward TRAIL and escape from the destruction by the immune system. Therefore, elucidation of the molecular targets and signaling pathways responsible for TRAIL resistance is imperative for devising effective therapeutic strategies for TRAIL resistant cancers. Although, various molecular targets leading to TRAIL resistance are well-studied, recent studies have implicated that the contribution of some key cellular processes toward TRAIL resistance need to be fully elucidated. These processes primarily include aberrant protein synthesis, protein misfolding, ubiquitin regulated death receptor expression, metabolic pathways, epigenetic deregulation, and metastasis. Novel synthetic/natural compounds that could inhibit these defective cellular processes may restore the TRAIL sensitivity and combination therapies with such compounds may resensitize TRAIL resistant cancer cells toward TRAIL-induced apoptosis. In this review, we have summarized the key cellular processes associated with TRAIL resistance and their status as therapeutic targets for novel TRAIL-sensitizing agents.
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Affiliation(s)
- Rachana Trivedi
- Cell Death Research Laboratory, Division of Endocrinology, CSIR-Central Drug Research Institute , Lucknow , India
| | - Durga Prasad Mishra
- Cell Death Research Laboratory, Division of Endocrinology, CSIR-Central Drug Research Institute , Lucknow , India
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11
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Kang D, Choi HJ, Kang S, Kim SY, Hwang YS, Je S, Han Z, Kim JH, Song JJ. Ratio of phosphorylated HSP27 to nonphosphorylated HSP27 biphasically acts as a determinant of cellular fate in gemcitabine-resistant pancreatic cancer cells. Cell Signal 2015; 27:807-17. [PMID: 25615626 DOI: 10.1016/j.cellsig.2015.01.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 12/15/2014] [Accepted: 01/13/2015] [Indexed: 01/24/2023]
Abstract
Gemcitabine has been used most commonly as an anticancer drug to treat advanced pancreatic cancer patients. However, intrinsic or acquired resistance of pancreatic cancer to gemcitabine was also developed, which leads to very low five-year survival rates. Here, we investigated whether cellular levels of HSP27 phosphorylation act as a determinant of cellular fate with gemcitabine. In addition we have demonstrated whether HSP27 downregulation effectively could overcome the acquisition of gemcitabine resistance by using transcriptomic analysis. We observed that gemcitabine induced p38/HSP27 phosphorylation and caused acquired resistance. After acquisition of gemcitabine resistance, cancer cells showed higher activity of NF-κB. NF-κB activity, as well as colony formation in gemcitabine-resistant pancreatic cancer cells, was significantly decreased by HSP27 downregulation and subsequent TRAIL treatment, showing that HSP27 was a common network mediator of gemcitabine/TRAIL-induced cell death. After transcriptomic analysis, gene fluctuation after HSP27 downregulation was very similar to that of pancreatic cancer cells susceptible to gemcitabine, and then in opposite position to that of acquired gemcitabine resistance, which makes it possible to downregulate HSP27 to overcome the acquired gemcitabine resistance to function as an overall survival network inhibitor. Most importantly, we demonstrated that the ratio of phosphorylated HSP27 to nonphosphorylated HSP27 rather than the cellular level of HSP27 itself acts biphasically as a determinant of cellular fate in gemcitabine-resistant pancreatic cancer cells.
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Affiliation(s)
- Dongxu Kang
- Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Oncology, Affiliated Hospital of Yanbian University, Yanji, Jilin Province, PR China
| | - Hye Jin Choi
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sujin Kang
- Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - So Young Kim
- Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yong-Sic Hwang
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Suyeon Je
- Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Zhezhu Han
- Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Oncology, Affiliated Hospital of Yanbian University, Yanji, Jilin Province, PR China
| | - Joo-Hang Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - Jae J Song
- Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Republic of Korea; Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Republic of Korea.
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