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Jun HJ, Park SJ, Kang HJ, Lee GY, Lee N, Park JH, Yoo HS. The Survival Benefit of Combination Therapy With Mild Temperature Hyperthermia and an Herbal Prescription of Gun-Chil-Jung in 54 Cancer Patients Treated With Chemotherapy or Radiation Therapy: A Retrospective Study. Integr Cancer Ther 2020; 19:1534735420926583. [PMID: 32449629 PMCID: PMC7249570 DOI: 10.1177/1534735420926583] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 03/25/2020] [Accepted: 04/23/2020] [Indexed: 12/18/2022] Open
Abstract
Background: The combination of herbal medicine with conventional treatment increases the survival rate of cancer patients, but the effect is not great. Hyperthermia may have a synergistic effect with herbal medicine alongside conventional medicine. Objective: To monitor the efficacy of hyperthermia together with Gun-Chil-Jung (GCJ) capsule for event-free survival (EFS) and overall survival (OS) for the treatment of various cancers. Methods: We collected data retrospectively on 54 cancer patients of all stages. They were divided into 4 groups according to each hyperthermia or GCJ treatment period. Hyperthermia with 0.46 MHz radiofrequency wave was applied a power of 50 to 100 W for 70 minutes. GCJ capsules were administered orally 3 times a day. Results: The median follow-up was 13.4 months, and 25 (55.6%) patients showed disease-related events. Hyperthermia with GCJ treatment was administered in combination group (n = 36, 66.7%) and traditional Korean medicine-only group (n = 17, 31.5%). The median EFS was 190 days, and the median OS was 390 days. The group of hyperthermia 7 times or fewer and GCJ more than 28 days showed longer EFS and OS. The analysis of superiority between hyperthermia and GCJ showed no significant difference (EFS, P = .55; OS, P = .364). Conclusions: The combination of hyperthermia 1 to 2 times a week with GCJ treatment may improve survival of cancer patients treated or being treated with conventional cancer therapies.
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Affiliation(s)
- Hyeong Joon Jun
- Seoul Korean Medicine Hospital of
Daejeon University, Seoul, Republic of Korea
| | - So-Jung Park
- Dunsan Korean Medicine Hospital of
Daejeon University, Daejeon, Republic of Korea
| | - Hwi-Joong Kang
- Seoul Korean Medicine Hospital of
Daejeon University, Seoul, Republic of Korea
| | - Ga-Young Lee
- Cheonan Korean Medicine Hospital of
Daejeon University, Cheonan, Republic of Korea
| | - Namhun Lee
- Cheonan Korean Medicine Hospital of
Daejeon University, Cheonan, Republic of Korea
| | - Ji Hye Park
- Seoul Korean Medicine Hospital of
Daejeon University, Seoul, Republic of Korea
| | - Hwa-Seung Yoo
- Seoul Korean Medicine Hospital of
Daejeon University, Seoul, Republic of Korea
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52
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Gracia L, Lora G, Blair LJ, Jinwal UK. Therapeutic Potential of the Hsp90/Cdc37 Interaction in Neurodegenerative Diseases. Front Neurosci 2019; 13:1263. [PMID: 31824256 PMCID: PMC6882380 DOI: 10.3389/fnins.2019.01263] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 11/06/2019] [Indexed: 12/15/2022] Open
Abstract
Alzheimer's, Huntington's, and Parkinson's are devastating neurodegenerative diseases that are prevalent in the aging population. Patient care costs continue to rise each year, because there is currently no cure or disease modifying treatments for these diseases. Numerous efforts have been made to understand the molecular interactions governing the disease development. These efforts have revealed that the phosphorylation of proteins by kinases may play a critical role in the aggregation of disease-associated proteins, which is thought to contribute to neurodegeneration. Interestingly, a molecular chaperone complex consisting of the 90 kDa heat shock protein (Hsp90) and Cell Division Cycle 37 (Cdc37) has been shown to regulate the maturation of many of these kinases as well as regulate some disease-associated proteins directly. Thus, the Hsp90/Cdc37 complex may represent a potential drug target for regulating proteins linked to neurodegenerative diseases, through both direct and indirect interactions. Herein, we discuss the broad understanding of many Hsp90/Cdc37 pathways and how this protein complex may be a useful target to regulate the progression of neurodegenerative disease.
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Affiliation(s)
- Liam Gracia
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida-Health, Tampa, FL, United States
| | - Gabriella Lora
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida-Health, Tampa, FL, United States
| | - Laura J. Blair
- Department of Molecular Medicine, Byrd Alzheimer’s Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Umesh K. Jinwal
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida-Health, Tampa, FL, United States
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53
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Bickel D, Gohlke H. C-terminal modulators of heat shock protein of 90 kDa (HSP90): State of development and modes of action. Bioorg Med Chem 2019; 27:115080. [DOI: 10.1016/j.bmc.2019.115080] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 07/29/2019] [Accepted: 08/25/2019] [Indexed: 12/22/2022]
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54
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Pignataro L. Alcohol protects the CNS by activating HSF1 and inducing the heat shock proteins. Neurosci Lett 2019; 713:134507. [PMID: 31541723 DOI: 10.1016/j.neulet.2019.134507] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 09/13/2019] [Accepted: 09/18/2019] [Indexed: 12/15/2022]
Abstract
Although alcohol abuse and dependence have profound negative health consequences, emerging evidence suggests that exposure to low/moderate concentrations of ethanol protects multiple organs and systems. In the CNS, moderate drinking decreases the risk of dementia and Alzheimer's disease. This neuroprotection correlates with an increased expression of the heat shock proteins (HSPs). Multiple epidemiological studies revealed an inverse association between ethanol intoxication and traumatic brain injury mortality. In this case, ethanol-induced HSPs limit the inflammatory immune response diminishing cell death and improving the neurobehavioural outcome. Ethanol also protects the brain against ischemic injuries via the HSPs. In our laboratory, we demonstrated that ethanol increased the expression of several HSP genes in neurons and astrocytes by activating the transcription factor, heat shock factor 1 (HSF1). HSF1 induces HSPs that target misfolded proteins for refolding or degradation, increasing the survival chances of the cells. These data indicate that ethanol neuroprotection is mediated by the activation HSF1 and the induction of HSPs.
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Affiliation(s)
- Leonardo Pignataro
- Columbia University, Department of Anesthesiology, 622 West 168th St., PH 511, New York, NY, 10032, USA; College of Staten Island - City University of New York, 2800 Victory Blvd., Building 1A - 101, Staten Island, NY, 10314, USA.
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55
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Boran T, Gunaydin A, Jannuzzi AT, Ozcagli E, Alpertunga B. Celastrol pretreatment as a therapeutic option against cisplatin-induced nephrotoxicity. Toxicol Res (Camb) 2019; 8:723-730. [PMID: 31588349 PMCID: PMC6762010 DOI: 10.1039/c9tx00141g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 07/29/2019] [Indexed: 12/31/2022] Open
Abstract
Celastrol is a natural bioactive compound extracted from the medicinal plant Tripterygium wilfordii Hook F. It exhibits immunosuppressive, anti-inflammatory, and antioxidant activities. Cisplatin is a commonly used chemotherapeutic drug in the treatment of a wide range of tumors. Although very effective therapeutically, it can cause nephrotoxicity leading to dose reduction or discontinuation of treatment. This study aims to clarify the therapeutic potential of celastrol in cisplatin-induced nephrotoxicity. The possible protective effects of celastrol pretreatment against cisplatin-induced oxidative stress and genotoxicity were investigated. A rat kidney epithelial cell line NRK-52E was pretreated with the desired concentrations of celastrol (200 nM, 100 nM, and 50 nM) for 24 h. The cells were treated with 50 μM cisplatin for a further 24 h to see whether cisplatin caused the same or less toxicity compared to the vehicle control group. Alkaline comet assay was performed for genotoxicity assessment. Genotoxicity evaluation revealed that celastrol caused a statistically significant reduction in DNA damage. Oxidative stress parameters were evaluated by measuring the glutathione (GSH) and protein carbonyl (PC) levels and also by measuring the enzyme activities of glutathione peroxidase (GPx), glutathione reductase (GR), catalase (CAT) and superoxide dismutase (SOD) enzymes. Celastrol pretreatment increased the GSH content of the cells and ameliorated the protein carbonylation level. Likewise, celastrol pretreatment improved the GR and CAT activities. However, no significant difference was observed in GPx and SOD activities. In the light of these findings, celastrol treatment could be a therapeutic option to reduce cisplatin-induced nephrotoxicity. Further studies are needed for the clarification of its therapeutic potential.
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Affiliation(s)
- Tugce Boran
- Istanbul University , Faculty of Pharmacy , Department of Pharmaceutical Toxicology , 34116 , Beyazıt , Istanbul , Turkey . ; ; Tel: +902124400000
| | - Aysenur Gunaydin
- Istanbul University , Faculty of Pharmacy , Department of Pharmaceutical Toxicology , 34116 , Beyazıt , Istanbul , Turkey . ; ; Tel: +902124400000
- Bezmialem Vakif University , Faculty of Pharmacy , Department of Pharmaceutical Toxicology , Vatan Street , 34093 , Fatih , Istanbul , Turkey
| | - Ayse Tarbin Jannuzzi
- Istanbul University , Faculty of Pharmacy , Department of Pharmaceutical Toxicology , 34116 , Beyazıt , Istanbul , Turkey . ; ; Tel: +902124400000
| | - Eren Ozcagli
- Istanbul University , Faculty of Pharmacy , Department of Pharmaceutical Toxicology , 34116 , Beyazıt , Istanbul , Turkey . ; ; Tel: +902124400000
| | - Buket Alpertunga
- Istanbul University , Faculty of Pharmacy , Department of Pharmaceutical Toxicology , 34116 , Beyazıt , Istanbul , Turkey . ; ; Tel: +902124400000
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56
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Wang G, Xiao Q, Wu Y, Wei YJ, Jing Y, Cao XR, Gong ZN. Design and synthesis of novel celastrol derivative and its antitumor activity in hepatoma cells and antiangiogenic activity in zebrafish. J Cell Physiol 2019; 234:16431-16446. [PMID: 30770566 DOI: 10.1002/jcp.28312] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 01/20/2019] [Accepted: 01/24/2019] [Indexed: 01/24/2023]
Abstract
Two series of celastrol derivatives were designed and synthesized by modifying carboxylic acid at the 28th position with amino acid, and their intermediates with isobutyrate at the third position. All compounds were evaluated for their antiproliferation activity by four human cancer cell lines (SCG7901, HGC27, HepG2, and Bel7402) and one normal cell LO2. The most promising compound, compound 8, showed superior bioactivity and lower toxicity than others including celastrol. Further underlying tests illustrated that compound 8 induced apoptosis and cell arrest at G2/M and inhibited proliferation and mobility of human hepatoma cells by suppressing the signal transducer and activator of transcription-3 signaling pathway. Besides these, a highly accurate and reproducible high performance liquid chromatography protocol was established to determine celastrol and compound 8 absorption in zebrafish, and results demonstrated that their concentration increased rapidly within 4 hr in a time-dependent manner and the concentration of compound 8 was higher than that of celastrol. In addition, without detection at 12 hr, compound 8 was rapidly metabolized in vivo. These findings are very helpful for the structural modification of celastrol and other bioactive compounds to improve their bioactivity, toxicity, and absorption.
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Affiliation(s)
- Gang Wang
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - Qi Xiao
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - Yao Wu
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - Ying-Jie Wei
- Key Laboratory of Oral Drug Delivery System of Chinese Meteria Media of State Administration of Tradition Chinese Medicine, Jiangsu Branch of China Academy of Chinese Medical Science, Nanjing, People's Republic of China
| | - Yue Jing
- Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, People's Republic of China
| | - Xiang-Rong Cao
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, People's Republic of China
| | - Zhu-Nan Gong
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China.,Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, People's Republic of China
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57
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Dukay B, Csoboz B, Tóth ME. Heat-Shock Proteins in Neuroinflammation. Front Pharmacol 2019; 10:920. [PMID: 31507418 PMCID: PMC6718606 DOI: 10.3389/fphar.2019.00920] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/22/2019] [Indexed: 01/01/2023] Open
Abstract
The heat-shock response, one of the main pro-survival mechanisms of a living organism, has evolved as the biochemical response of cells to cope with heat stress. The most well-characterized aspect of the heat-shock response is the accumulation of a conserved set of proteins termed heat-shock proteins (HSPs). HSPs are key players in protein homeostasis acting as chaperones by aiding the folding and assembly of nascent proteins and protecting against protein aggregation. HSPs have been associated with neurological diseases in the context of their chaperone activity, as they were found to suppress the aggregation of misfolded toxic proteins. In recent times, HSPs have proven to have functions apart from the classical molecular chaperoning in that they play a role in a wider scale of neurological disorders by modulating neuronal survival, inflammation, and disease-specific signaling processes. HSPs are gaining importance based on their ability to fine-tune inflammation and act as immune modulators in various bodily fluids. However, their effect on neuroinflammation processes is not yet fully understood. In this review, we summarize the role of neuroinflammation in acute and chronic pathological conditions affecting the brain. Moreover, we seek to explore the existing literature on HSP-mediated inflammatory function within the central nervous system and compare the function of these proteins when they are localized intracellularly compared to being present in the extracellular milieu.
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Affiliation(s)
- Brigitta Dukay
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.,Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Bálint Csoboz
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Melinda E Tóth
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
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58
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Niemelä E, Desai D, Lundsten E, Rosenholm JM, Kankaanpää P, Eriksson JE. Quantitative bioimage analytics enables measurement of targeted cellular stress response induced by celastrol-loaded nanoparticles. Cell Stress Chaperones 2019; 24:735-748. [PMID: 31079284 PMCID: PMC6629742 DOI: 10.1007/s12192-019-00999-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 04/12/2019] [Accepted: 04/17/2019] [Indexed: 10/26/2022] Open
Abstract
The cellular stress response, which provides protection against proteotoxic stresses, is characterized by the activation of heat shock factor 1 and the formation of nuclear stress bodies (nSBs). In this study, we developed a computerized method to quantify the formation and size distribution of nSBs, as stress response induction is of interest in cancer research, neurodegenerative diseases, and in other pathophysiological processes. We employed an advanced bioimaging and analytics workflow to enable quantitative detailed subcellular analysis of cell populations even down to single-cell level. This type of detailed analysis requires automated single cell analysis to allow for detection of both size and distribution of nSBs. For specific induction of nSB we used mesoporous silica nanoparticles (MSNs) loaded with celastrol, a plant-derived triterpene with the ability to activate the stress response. To enable specific targeting, we employed folic acid functionalized nanoparticles, which yields targeting to folate receptor expressing cancer cells. In this way, we could assess the ability to quantitatively detect directed and spatio-temporal nSB induction using 2D and 3D confocal imaging. Our results demonstrate successful implementation of an imaging and analytics workflow based on a freely available, general-purpose software platform, BioImageXD, also compatible with other imaging modalities due to full 3D/4D and high-throughput batch processing support. The developed quantitative imaging analytics workflow opens possibilities for detailed stress response examination in cell populations, with significant potential in the analysis of targeted drug delivery systems related to cell stress and other cytoprotective cellular processes.
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Affiliation(s)
- Erik Niemelä
- Cell Biology, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland
| | - Diti Desai
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
| | - Emine Lundsten
- Cell Biology, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
| | - Jessica M. Rosenholm
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
| | - Pasi Kankaanpää
- Cell Biology, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
| | - John E. Eriksson
- Cell Biology, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland
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59
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Abstract
Nuclear proteins participate in diverse cellular processes, many of which are essential for cell survival and viability. To maintain optimal nuclear physiology, the cell employs the ubiquitin-proteasome system to eliminate damaged and misfolded proteins in the nucleus that could otherwise harm the cell. In this review, we highlight the current knowledge about the major ubiquitin-protein ligases involved in protein quality control degradation (PQCD) in the nucleus and how they orchestrate their functions to eliminate misfolded proteins in different nuclear subcompartments. Many human disorders are causally linked to protein misfolding in the nucleus, hence we discuss major concepts that still need to be clarified to better understand the basis of the nuclear misfolded proteins' toxic effects. Additionally, we touch upon potential strategies for manipulating nuclear PQCD pathways to ameliorate diseases associated with protein misfolding and aggregation in the nucleus.
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Affiliation(s)
- Charisma Enam
- Department of Pharmacology, University of Washington, Seattle, Washington 98195, USA; ,
| | - Yifat Geffen
- Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat-Ram, Jerusalem 91904, Israel; ,
| | - Tommer Ravid
- Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat-Ram, Jerusalem 91904, Israel; ,
| | - Richard G Gardner
- Department of Pharmacology, University of Washington, Seattle, Washington 98195, USA; ,
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60
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Qian YY, Li WY, Yan Y, Zhao XY, Yang T, Fang CC, Hou JJ, Liu YQ. Celastrus orbiculatus Extracts Inhibit Human Hepatocellular Carcinoma Growth by Targeting mTOR Signaling Pathways. Chin J Integr Med 2019; 25:845-852. [PMID: 31127506 DOI: 10.1007/s11655-019-3035-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/30/2018] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To characterize the molecular mechanism underlying the antineoplastic activity of Celastrus orbiculatus Thunb. extracts (COE). METHODS The human hepatocellular carcinoma HepG2 cells with mammalian target of rapamycin (mTOR) knockdown expressed (HepG2/mTOR) were constructed using molecular biological technology. In vitro, the HepG2/mTOR- cells were treated with COE at various concentrations (10, 20, 40, 80, 160 and 320 µ g/mL). Cell viability was determined using 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assays. According to the half-maximal inhibitory concentration (IC50) value (140 mg/L), the concentrations of COE in the subsequent experiment was set to alleviate cytotoxicity. The HepG2/mTOR- cells were divided into 5 groups: negative control (untreated), COE treatment groups (40, 80, 120 mg/L COE) and positive control group (cisplatin, DDP, 2 mg/L), respectively. Wild-type HepG2 cells were used as a blank control. The effects of COE on the cell apoptosis were analyzed by flow cytometry and transmission electronic microscopy (TEM), respectively. The protein expression levels of mTOR signal pathways were determined by Western blotting. In vivo, HepG2/mTOR- cells (2 × 106 cell/mice) were subcutaneously injected into the right flank of nude mice. Thirty-six female nude mice were randomly assigned to 6 groups according to body weight (6 mice per group) as follows: solvent vehicle control, Banmao Capsule treated group (BM, 195 mg/kg), Tegafur, Gimeracil and Oteracil Potassium Capsules (10 mg/kg) treated group, and different dosages of COE (10, 20, 40 mg/kg) groups. Tumor growth was monitored and immunohistochemical staining was used to examine the expression of apoptosis-related proteins in tumor tissues. RESULTS COE inhibited the proliferation significantly in a concentration-dependent manner in HepG2/mTOR- cells (P<0.01). COE significantly induced the apoptosis of HepG2/mTOR- cells (P<0.01), and the apoptotic bodies can be observed under TEM. COE significantly inhibits the proteins expression of mTOR-related signal pathways. In vivo, COE significantly inhibited tumor growth in nude mice (P<0.01). Moreover, the results showed that COE down-regulated the expression of Bcl-2 and Bcl-xL, and up-regulated the levels of Bax and caspase-3 protein (P<0.01). CONCLUSION COE was a potential chemotherapeutic drug in HCC treatments via targeting mTOR signal pathway.
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Affiliation(s)
- Ya-Yun Qian
- Institute of Traditional Chinese Medicine and Western Medicine, School of Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China. .,Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, 225001, Jiangsu Province, China. .,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu Province, China.
| | - Wen-Yuan Li
- Institute of Traditional Chinese Medicine and Western Medicine, School of Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Yan Yan
- Institute of Traditional Chinese Medicine and Western Medicine, School of Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Xue-Yu Zhao
- Institute of Traditional Chinese Medicine and Western Medicine, School of Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Ting Yang
- Institute of Traditional Chinese Medicine and Western Medicine, School of Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Chuan-Ci Fang
- Institute of Traditional Chinese Medicine and Western Medicine, School of Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Jing-Jing Hou
- Institute of Traditional Chinese Medicine and Western Medicine, School of Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Yan-Qing Liu
- Institute of Traditional Chinese Medicine and Western Medicine, School of Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
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61
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Cole DW, Svider PF, Shenouda KG, Lee PB, Yoo NG, McLeod TM, Mutchnick SA, Yoo GH, Kaufman RJ, Callaghan MU, Fribley AM. Targeting the unfolded protein response in head and neck and oral cavity cancers. Exp Cell Res 2019; 382:111386. [PMID: 31075256 DOI: 10.1016/j.yexcr.2019.04.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 03/25/2019] [Accepted: 04/05/2019] [Indexed: 12/18/2022]
Abstract
Many FDA-approved anti-cancer therapies, targeted toward a wide array of molecular targets and signaling networks, have been demonstrated to activate the unfolded protein response (UPR). Despite a critical role for UPR signaling in the apoptotic execution of cancer cells by many of these compounds, the authors are currently unaware of any instance whereby a cancer drug was developed with the UPR as the intended target. With the essential role of the UPR as a driving force in the genesis and maintenance of the malignant phenotype, a great number of pre-clinical studies have surged into the medical literature describing the ability of dozens of compounds to induce UPR signaling in a myriad of cancer models. The focus of the current work is to review the literature and explore the role of the UPR as a mediator of chemotherapy-induced cell death in squamous cell carcinomas of the head and neck (HNSCC) and oral cavity (OCSCC), with an emphasis on preclinical studies.
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Affiliation(s)
- Daniel W Cole
- Department of Otolaryngology - Head and Neck Surgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Peter F Svider
- Department of Otolaryngology - Head and Neck Surgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Kerolos G Shenouda
- Department of Otolaryngology - Head and Neck Surgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Paul B Lee
- Oakland University William Beaumont School of Medicine, Rochester Hills, Michigan, USA
| | - Nicholas G Yoo
- Department of Otolaryngology - Head and Neck Surgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Thomas M McLeod
- Department of Otolaryngology - Head and Neck Surgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Sean A Mutchnick
- Department of Otolaryngology - Head and Neck Surgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - George H Yoo
- Department of Otolaryngology - Head and Neck Surgery, Wayne State University School of Medicine, Detroit, MI, USA; Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA
| | - Randal J Kaufman
- Degenerative Diseases Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Michael U Callaghan
- Carman and Ann Adams Department of Pediatrics, Wayne State University School of Medicine, Detroit, MI, USA; Children's Hospital of Michigan, Detroit Medical Center, Detroit, MI, USA
| | - Andrew M Fribley
- Department of Otolaryngology - Head and Neck Surgery, Wayne State University School of Medicine, Detroit, MI, USA; Carman and Ann Adams Department of Pediatrics, Wayne State University School of Medicine, Detroit, MI, USA; Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA; Children's Hospital of Michigan, Detroit Medical Center, Detroit, MI, USA; Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA.
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62
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Grandjean JM, Plate L, Morimoto RI, Bollong MJ, Powers ET, Wiseman RL. Deconvoluting Stress-Responsive Proteostasis Signaling Pathways for Pharmacologic Activation Using Targeted RNA Sequencing. ACS Chem Biol 2019; 14:784-795. [PMID: 30821953 PMCID: PMC6474822 DOI: 10.1021/acschembio.9b00134] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cellular proteostasis is maintained by stress-responsive signaling pathways such as the heat shock response (HSR), the oxidative stress response (OSR), and the unfolded protein response (UPR). Activation of these pathways results in the transcriptional upregulation of select subsets of stress-responsive genes that restore proteostasis and adapt cellular physiology to promote recovery following various types of acute insult. The capacity for these pathways to regulate cellular proteostasis makes them attractive therapeutic targets for correcting proteostasis defects associated with diverse diseases. High-throughput screening (HTS) using cell-based reporter assays is highly effective for identifying putative activators of stress-responsive signaling pathways. However, the development of these compounds is hampered by the lack of medium-throughput assays to define compound potency and selectivity for a given pathway. Here, we describe a targeted RNA sequencing (RNAseq) assay that allows cost-effective, medium-throughput screening of stress-responsive signaling pathway activation. We demonstrate that this assay allows deconvolution of stress-responsive signaling activated by chemical genetic or pharmacologic agents. Furthermore, we use this assay to define the selectivity of putative OSR and HSR activating compounds previously identified by HTS. Our results demonstrate the potential for integrating this adaptable targeted RNAseq assay into screening programs focused on developing pharmacologic activators of stress-responsive signaling pathways.
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Affiliation(s)
- Julia M.D. Grandjean
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Lars Plate
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Richard I. Morimoto
- Department of Molecular Biosciences, Rice Institute for Biomedical Research, Northwestern University, Evanston, IL, USA
| | - Michael J. Bollong
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Evan T. Powers
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - R. Luke Wiseman
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
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63
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Joutsen J, Sistonen L. Tailoring of Proteostasis Networks with Heat Shock Factors. Cold Spring Harb Perspect Biol 2019; 11:cshperspect.a034066. [PMID: 30420555 DOI: 10.1101/cshperspect.a034066] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Heat shock factors (HSFs) are the main transcriptional regulators of the heat shock response and indispensable for maintaining cellular proteostasis. HSFs mediate their protective functions through diverse genetic programs, which are composed of genes encoding molecular chaperones and other genes crucial for cell survival. The mechanisms that are used to tailor HSF-driven proteostasis networks are not yet completely understood, but they likely comprise from distinct combinations of both genetic and proteomic determinants. In this review, we highlight the versatile HSF-mediated cellular functions that extend from cellular stress responses to various physiological and pathological processes, and we underline the key advancements that have been achieved in the field of HSF research during the last decade.
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Affiliation(s)
- Jenny Joutsen
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, 20520 Turku, Finland.,Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, 20520 Turku, Finland
| | - Lea Sistonen
- Faculty of Science and Engineering, Cell Biology, Åbo Akademi University, 20520 Turku, Finland.,Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, 20520 Turku, Finland
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64
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Hyun DH. Plasma membrane redox enzymes: new therapeutic targets for neurodegenerative diseases. Arch Pharm Res 2019; 42:436-445. [PMID: 30919268 DOI: 10.1007/s12272-019-01147-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 03/16/2019] [Indexed: 01/06/2023]
Abstract
Mitochondrial dysfunction caused by oxidative stress appears at early stages of aging and age-related diseases. Plasma membrane redox enzymes act in a compensatory manner to decrease oxidative stress and supply reductive capacity to ensure cell survival. Plasma membrane redox enzymes transfer electrons from NAD(P)H to oxidized ubiquinone and α-tocopherol, resulting in inhibition of further oxidative damage. Plasma membrane redox enzymes and their partners are affected by aging, leading to progression of neurodegenerative disease pathogenesis. Up-regulating plasma membrane redox enzymes via calorie restriction and phytochemicals make cells more resistant to oxidative damage under stress conditions by maintaining redox homeostasis and improving mitochondrial function. Investigation into plasma membrane redox enzymes can provide mechanistic details underlying the relationships between plasma membrane redox enzymes and mitochondrial complexes and provide a good therapeutic target for prevention and delay of neurodegenerative disorders.
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Affiliation(s)
- Dong-Hoon Hyun
- Department of Life Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, South Korea.
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65
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von Rüden EL, Wolf F, Gualtieri F, Keck M, Hunt CR, Pandita TK, Potschka H. Genetic and Pharmacological Targeting of Heat Shock Protein 70 in the Mouse Amygdala-Kindling Model. ACS Chem Neurosci 2019; 10:1434-1444. [PMID: 30396268 DOI: 10.1021/acschemneuro.8b00475] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Inflammatory responses involving Toll-like receptor signaling represent a key factor contributing to epileptogenesis. Thus, it is of particular interest to explore the relevance of toll-like receptor ligands and modulators, such as heat shock protein 70 (HSP70). Motivated by recent findings demonstrating an upregulation of HSP70 in a model of epileptogenesis, we analyzed the consequences of genetic and pharmacological targeting of HSP70 expression in a mouse kindling paradigm. Lack of inducible HSP70 resulted in increased prekindling seizure thresholds. However, at threshold stimulation the deficiency-promoted seizure spread, as indicated by an increased seizure severity. Subsequent kindling stimulations elicited more severe seizures in knockout mice, whereas endogenous termination of seizure activity remained unaffected with duration of behavioral and electrographic seizure activity comparable to that of wild-type mice. Interestingly, HSP70 deficiency resulted in enhanced microglia activation in the CA1 region. Next, we assessed a pharmacological targeting approach aiming to promote HSP70 expression. Celastrol treatment had no impact on kindling progression but reduced postkindling seizure thresholds and enhanced microglia activation in CA1 and CA3. In conclusion, the findings from HSP70-knockout mice support a protective role of HSP70 with an effect on microglia activation and spread of seizure activity. Unexpectedly, celastrol administration resulted in detrimental consequences. These findings should be considered as a warning about the general safety of celastrol as a drug candidate. The impact of pathophysiological mechanisms on the quality of celastrol effects requires comprehensive future studies exploring influencing factors. Moreover, alternate strategies to increase HSP70 expression should be further developed and validated.
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Affiliation(s)
- Eva-Lotta von Rüden
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University Munich, Koeniginstraße 16, D-80539 Munich, Germany
| | - Fabio Wolf
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University Munich, Koeniginstraße 16, D-80539 Munich, Germany
| | - Fabio Gualtieri
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University Munich, Koeniginstraße 16, D-80539 Munich, Germany
| | - Michael Keck
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University Munich, Koeniginstraße 16, D-80539 Munich, Germany
| | - Clayton R. Hunt
- Department of Radiation Oncology, The Houston Methodist Research Institute, 6550 Fannin Street SM8-024, Houston, Texas 77030, United States
| | - Tej K. Pandita
- Department of Radiation Oncology, The Houston Methodist Research Institute, 6550 Fannin Street SM8-024, Houston, Texas 77030, United States
| | - Heidrun Potschka
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University Munich, Koeniginstraße 16, D-80539 Munich, Germany
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66
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Zhang C, Wang R, Liu Z, Bunker E, Lee S, Giuntini M, Chapnick D, Liu X. The plant triterpenoid celastrol blocks PINK1-dependent mitophagy by disrupting PINK1's association with the mitochondrial protein TOM20. J Biol Chem 2019; 294:7472-7487. [PMID: 30885942 DOI: 10.1074/jbc.ra118.006506] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 03/05/2019] [Indexed: 12/31/2022] Open
Abstract
A critical function of the PTEN-induced kinase 1 (PINK1)-Parkin pathway is to mediate the clearing of unhealthy or damaged mitochondria via mitophagy. Loss of either PINK1 or Parkin protein expression is associated with Parkinson's disease. Here, using a high-throughput screening approach along with recombinant protein expression and kinase, immunoblotting, and immunofluorescence live-cell imaging assays, we report that celastrol, a pentacyclic triterpenoid isolated from extracts of the medicinal plant Tripterygium wilfordii, blocks recruitment pof Parkin to mitochondria, preventing mitophagy in response to mitochondrial depolarization induced by carbonyl cyanide m-chlorophenylhydrazone or to gamitrinib-induced inhibition of mitochondrial heat shock protein 90 (HSP90). Celastrol's effect on mitophagy was independent of its known role in microtubule disruption. Instead, we show that celastrol suppresses Parkin recruitment by inactivating PINK1 and preventing it from phosphorylating Parkin and also ubiquitin. We also observed that PINK1 directly and strongly associates with TOM20, a component of the translocase of outer mitochondrial membrane (TOM) machinery and relatively weak binding to another TOM subunit, TOM70. Moreover, celastrol disrupted binding between PINK1 and TOM20 both in vitro and in vivo but did not affect binding between TOM20 and TOM70. Using native gel analysis, we also show that celastrol disrupts PINK1 complex formation upon mitochondrial depolarization and sequesters PINK1 to high-molecular-weight protein aggregates. These results reveal that celastrol regulates the mitochondrial quality control pathway by interfering with PINK1-TOM20 binding.
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Affiliation(s)
- Conggang Zhang
- From the Department of Biochemistry, JSCBB, University of Colorado, Boulder, Colorado 80303 and
| | - Rongchun Wang
- From the Department of Biochemistry, JSCBB, University of Colorado, Boulder, Colorado 80303 and.,the Biology Institute, Qilu University of Technology, Shandong Academy of Sciences, 28789 East Jinshi Street, Licheng District, Jinan 250103, China
| | - Zeyu Liu
- From the Department of Biochemistry, JSCBB, University of Colorado, Boulder, Colorado 80303 and
| | - Eric Bunker
- From the Department of Biochemistry, JSCBB, University of Colorado, Boulder, Colorado 80303 and
| | - Schuyler Lee
- From the Department of Biochemistry, JSCBB, University of Colorado, Boulder, Colorado 80303 and
| | - Michelle Giuntini
- From the Department of Biochemistry, JSCBB, University of Colorado, Boulder, Colorado 80303 and
| | - Douglas Chapnick
- From the Department of Biochemistry, JSCBB, University of Colorado, Boulder, Colorado 80303 and
| | - Xuedong Liu
- From the Department of Biochemistry, JSCBB, University of Colorado, Boulder, Colorado 80303 and
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67
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Shan WG, Wang HG, Wu R, Zhan ZJ, Ma LF. Synthesis and anti-tumor activity study of water-soluble PEG-celastrol coupling derivatives as self-assembled nanoparticles. Bioorg Med Chem Lett 2019; 29:685-687. [DOI: 10.1016/j.bmcl.2019.01.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/30/2019] [Accepted: 01/31/2019] [Indexed: 11/29/2022]
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69
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Kyriakou E, Schmidt S, Dodd GT, Pfuhlmann K, Simonds SE, Lenhart D, Geerlof A, Schriever SC, De Angelis M, Schramm KW, Plettenburg O, Cowley MA, Tiganis T, Tschöp MH, Pfluger PT, Sattler M, Messias AC. Celastrol Promotes Weight Loss in Diet-Induced Obesity by Inhibiting the Protein Tyrosine Phosphatases PTP1B and TCPTP in the Hypothalamus. J Med Chem 2018; 61:11144-11157. [PMID: 30525586 DOI: 10.1021/acs.jmedchem.8b01224] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Celastrol is a natural pentacyclic triterpene used in traditional Chinese medicine with significant weight-lowering effects. Celastrol-administered mice at 100 μg/kg decrease food consumption and body weight via a leptin-dependent mechanism, yet its molecular targets in this pathway remain elusive. Here, we demonstrate in vivo that celastrol-induced weight loss is largely mediated by the inhibition of leptin negative regulators protein tyrosine phosphatase (PTP) 1B (PTP1B) and T-cell PTP (TCPTP) in the arcuate nucleus (ARC) of the hypothalamus. We show in vitro that celastrol binds reversibly and inhibits noncompetitively PTP1B and TCPTP. NMR data map the binding site to an allosteric site in the catalytic domain that is in proximity of the active site. By using a panel of PTPs implicated in hypothalamic leptin signaling, we show that celastrol additionally inhibited PTEN and SHP2 but had no activity toward other phosphatases of the PTP family. These results suggest that PTP1B and TCPTP in the ARC are essential for celastrol's weight lowering effects in adult obese mice.
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Affiliation(s)
- Eleni Kyriakou
- Institute of Structural Biology , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,Biomolecular NMR and Center for Integrated Protein Science Munich at Department of Chemistry , Technical University of Munich , 85747 Garching , Germany
| | - Stefanie Schmidt
- Institute of Structural Biology , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,Biomolecular NMR and Center for Integrated Protein Science Munich at Department of Chemistry , Technical University of Munich , 85747 Garching , Germany
| | - Garron T Dodd
- Metabolism, Diabetes and Obesity Program, Biomedicine Discovery Institute, and Department of Biochemistry and Molecular Biology , Monash University , Victoria 3800 , Australia
| | - Katrin Pfuhlmann
- Research Unit Neurobiology of Diabetes , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,Institute for Diabetes and Obesity , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,Division of Metabolic Diseases , Technische Universität München , 80333 Munich , Germany.,German Center for Diabetes Research (DZD) , 85764 Neuherberg , Germany
| | - Stephanie E Simonds
- Metabolism, Diabetes and Obesity Program, Biomedicine Discovery Institute, and Department of Physiology , Monash University , Victoria 3800 , Australia
| | - Dominik Lenhart
- Institute of Structural Biology , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,Biomolecular NMR and Center for Integrated Protein Science Munich at Department of Chemistry , Technical University of Munich , 85747 Garching , Germany.,Institute of Medicinal Chemistry , Helmholtz Zentrum München , 85764 Neuherberg , Germany
| | - Arie Geerlof
- Institute of Structural Biology , Helmholtz Zentrum München , 85764 Neuherberg , Germany
| | - Sonja C Schriever
- Research Unit Neurobiology of Diabetes , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,Institute for Diabetes and Obesity , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,German Center for Diabetes Research (DZD) , 85764 Neuherberg , Germany
| | - Meri De Angelis
- Molecular EXposomics , Helmholtz Zentrum München , 85764 Neuherberg , Germany
| | - Karl-Werner Schramm
- Molecular EXposomics , Helmholtz Zentrum München , 85764 Neuherberg , Germany
| | - Oliver Plettenburg
- Institute of Medicinal Chemistry , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,Institute of Organic Chemistry , Leibniz Universität Hannover , 30167 Hannover , Germany
| | - Michael A Cowley
- Metabolism, Diabetes and Obesity Program, Biomedicine Discovery Institute, and Department of Physiology , Monash University , Victoria 3800 , Australia
| | - Tony Tiganis
- Metabolism, Diabetes and Obesity Program, Biomedicine Discovery Institute, and Department of Biochemistry and Molecular Biology , Monash University , Victoria 3800 , Australia.,Peter MacCallum Cancer Centre , Melbourne , Victoria 3000 , Australia
| | - Matthias H Tschöp
- Institute for Diabetes and Obesity , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,Division of Metabolic Diseases , Technische Universität München , 80333 Munich , Germany.,German Center for Diabetes Research (DZD) , 85764 Neuherberg , Germany
| | - Paul T Pfluger
- Research Unit Neurobiology of Diabetes , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,Institute for Diabetes and Obesity , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,German Center for Diabetes Research (DZD) , 85764 Neuherberg , Germany
| | - Michael Sattler
- Institute of Structural Biology , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,Biomolecular NMR and Center for Integrated Protein Science Munich at Department of Chemistry , Technical University of Munich , 85747 Garching , Germany
| | - Ana C Messias
- Institute of Structural Biology , Helmholtz Zentrum München , 85764 Neuherberg , Germany.,Biomolecular NMR and Center for Integrated Protein Science Munich at Department of Chemistry , Technical University of Munich , 85747 Garching , Germany
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70
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Petrović A, Kaur J, Tomljanović I, Nistri A, Mladinic M. Pharmacological induction of Heat Shock Protein 70 by celastrol protects motoneurons from excitotoxicity in rat spinal cord in vitro. Eur J Neurosci 2018; 49:215-231. [PMID: 30362615 DOI: 10.1111/ejn.14218] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/14/2018] [Accepted: 10/15/2018] [Indexed: 12/29/2022]
Abstract
The secondary phase of spinal cord injury arising after the primary lesion largely extends the damage severity with delayed negative consequences for sensory-motor pathways. It is, therefore, important to find out if enhancing intrinsic mechanisms of neuroprotection can spare motoneurons that are very vulnerable cells. This issue was investigated with an in vitro model of rat spinal cord excitotoxicity monitored for up to 24 hr after the primary injury evoked by kainate. This study sought to pharmacologically boost the expression of heat shock proteins (HSP) to protect spinal motoneurons using celastrol to investigate if the rat spinal cord can upregulate HSP as neuroprotective mechanism. Despite its narrow range of drug safety in vitro, celastrol was not toxic to the rat spinal cord at 0.75 μM concentration and enhanced the expression of HSP70 by motoneurons. When celastrol was applied either before or after kainate, the number of dead motoneurons was significantly decreased and the nuclear localization of the cell death biomarker AIF strongly inhibited. Nevertheless, electrophysiological recording showed that protection of lumbar motor networks by celastrol was rather limited as reflex activity was impaired and fictive locomotion largely depressed, suggesting that functional deficit persisted, though the networks could express slow rhythmic oscillations. While our data do not exclude further recovery at later times beyond the experimental observations, the present results indicate that the upregulated expression of HSP in the aftermath of acute injury may be an interesting avenue for early protection of spinal motoneurons.
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Affiliation(s)
- Antonela Petrović
- Department of Biotechnology, University of Rijeka, Rijeka, Croatia.,Neuroscience Department, International School for Advanced Studies (SISSA), Trieste, Italy
| | - Jaspreet Kaur
- Neuroscience Department, International School for Advanced Studies (SISSA), Trieste, Italy
| | | | - Andrea Nistri
- Neuroscience Department, International School for Advanced Studies (SISSA), Trieste, Italy
| | - Miranda Mladinic
- Department of Biotechnology, University of Rijeka, Rijeka, Croatia
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71
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Pfuhlmann K, Schriever SC, Baumann P, Kabra DG, Harrison L, Mazibuko-Mbeje SE, Contreras RE, Kyriakou E, Simonds SE, Tiganis T, Cowley MA, Woods SC, Jastroch M, Clemmensen C, De Angelis M, Schramm KW, Sattler M, Messias AC, Tschöp MH, Pfluger PT. Celastrol-Induced Weight Loss Is Driven by Hypophagia and Independent From UCP1. Diabetes 2018; 67:2456-2465. [PMID: 30158241 DOI: 10.2337/db18-0146] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 08/03/2018] [Indexed: 11/13/2022]
Abstract
Celastrol, a plant-derived constituent of traditional Chinese medicine, has been proposed to offer significant potential as an antiobesity drug. However, the molecular mechanism for this activity is unknown. We show that the weight-lowering effects of celastrol are driven by decreased food consumption. Although young Lep ob mice respond with a decrease in food intake and body weight, adult Lep db and Lep ob mice are unresponsive to celastrol, suggesting that functional leptin signaling in adult mice is required to elicit celastrol's catabolic actions. Protein tyrosine phosphatase 1 (PTP1B), a leptin negative-feedback regulator, has been previously reported to be one of celastrol's targets. However, we found that global PTP1B knockout (KO) and wild-type (WT) mice have comparable weight loss and hypophagia when treated with celastrol. Increased levels of uncoupling protein 1 (UCP1) in subcutaneous white and brown adipose tissue suggest celastrol-induced thermogenesis as a further mechanism. However, diet-induced obese UCP1 WT and KO mice have comparable weight loss upon celastrol treatment, and celastrol treatment has no effect on energy expenditure under ambient housing or thermoneutral conditions. Overall, our results suggest that celastrol-induced weight loss is hypophagia driven and age-dependently mediated by functional leptin signaling. Our data encourage reconsideration of therapeutic antiobesity strategies built on leptin sensitization.
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Affiliation(s)
- Katrin Pfuhlmann
- Research Unit Neurobiology of Diabetes, Helmholtz Zentrum München, Neuherberg, Germany
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- Division of Metabolic Diseases, Technische Universität München, Munich, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Sonja C Schriever
- Research Unit Neurobiology of Diabetes, Helmholtz Zentrum München, Neuherberg, Germany
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Peter Baumann
- Research Unit Neurobiology of Diabetes, Helmholtz Zentrum München, Neuherberg, Germany
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- Division of Metabolic Diseases, Technische Universität München, Munich, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Dhiraj G Kabra
- German Center for Diabetes Research (DZD), Neuherberg, Germany
- Institute for Clinical Biochemistry and Pathobiochemistry, German Diabetes Center, Heinrich Heine University, Leibniz Center for Diabetes Research, Düsseldorf, Germany
| | - Luke Harrison
- Research Unit Neurobiology of Diabetes, Helmholtz Zentrum München, Neuherberg, Germany
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- Division of Metabolic Diseases, Technische Universität München, Munich, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Sithandiwe E Mazibuko-Mbeje
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg, South Africa
| | - Raian E Contreras
- Research Unit Neurobiology of Diabetes, Helmholtz Zentrum München, Neuherberg, Germany
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- Division of Metabolic Diseases, Technische Universität München, Munich, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Eleni Kyriakou
- Institute of Structural Biology, Helmholtz Zentrum München, Neuherberg, Germany
- Biomolecular Nuclear Magnetic Resonance and Center for Integrated Protein Science Munich at Department Chemie, Technische Universität München, Garching, Germany
| | - Stephanie E Simonds
- Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Victoria, Australia
| | - Tony Tiganis
- Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Victoria, Australia
| | - Michael A Cowley
- Department of Physiology, Monash University, Melbourne, Victoria, Australia
| | - Stephen C Woods
- Psychiatry and Behavioral Neuroscience, Metabolic Diseases Institute, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Martin Jastroch
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Christoffer Clemmensen
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Meri De Angelis
- Molecular EXposomics, Helmholtz Zentrum München, Neuherberg, Germany
| | | | - Michael Sattler
- Institute of Structural Biology, Helmholtz Zentrum München, Neuherberg, Germany
- Biomolecular Nuclear Magnetic Resonance and Center for Integrated Protein Science Munich at Department Chemie, Technische Universität München, Garching, Germany
| | - Ana C Messias
- Institute of Structural Biology, Helmholtz Zentrum München, Neuherberg, Germany
- Biomolecular Nuclear Magnetic Resonance and Center for Integrated Protein Science Munich at Department Chemie, Technische Universität München, Garching, Germany
| | - Matthias H Tschöp
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- Division of Metabolic Diseases, Technische Universität München, Munich, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Paul T Pfluger
- Research Unit Neurobiology of Diabetes, Helmholtz Zentrum München, Neuherberg, Germany
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
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72
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Small Molecule Inhibitors of HSF1-Activated Pathways as Potential Next-Generation Anticancer Therapeutics. Molecules 2018; 23:molecules23112757. [PMID: 30356024 PMCID: PMC6278446 DOI: 10.3390/molecules23112757] [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] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 10/22/2018] [Accepted: 10/22/2018] [Indexed: 01/09/2023] Open
Abstract
Targeted therapy is an emerging paradigm in the development of next-generation anticancer drugs. Heat shock factor 1 (HSF1) has been identified as a promising drug target because it regulates several pathways responsible for cancer cell growth, metastasis, and survival. Studies have clearly demonstrated that HSF1 is an effective drug target. Herein, we provide a concise yet comprehensive and integrated overview of progress in developing small molecule inhibitors of HSF1 as next-generation anticancer chemotherapeutics while critically evaluating their potential and challenges. We believe that this review will provide a better understanding of important concepts helpful for outlining the strategy to develop new chemotherapeutic agents with promising anticancer activities by targeting HSF1.
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73
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Nakazono A, Adachi N, Takahashi H, Seki T, Hamada D, Ueyama T, Sakai N, Saito N. Pharmacological induction of heat shock proteins ameliorates toxicity of mutant PKCγ in spinocerebellar ataxia type 14. J Biol Chem 2018; 293:14758-14774. [PMID: 30093405 DOI: 10.1074/jbc.ra118.002913] [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] [Received: 03/13/2018] [Revised: 07/26/2018] [Indexed: 11/06/2022] Open
Abstract
Amyloid and amyloid-like protein aggregations are hallmarks of multiple, varied neurodegenerative disorders, including Alzheimer's and Parkinson's diseases. We previously reported that spinocerebellar ataxia type 14 (SCA14), a dominant-inherited neurodegenerative disease that affects cerebellar Purkinje cells, is characterized by the intracellular formation of neurotoxic amyloid-like aggregates of genetic variants of protein kinase Cγ (PKCγ). A number of protein chaperones, including heat shock protein 70 (Hsp70), promote the degradation and/or refolding of misfolded proteins and thereby prevent their aggregation. Here, we report that, in various SCA14-associated, aggregating PKCγ variants, endogenous Hsp70 is incorporated into aggregates and that expression of these PKCγ mutants up-regulates Hsp70 expression. We observed that PKCγ binds Hsp70 and that this interaction is enhanced in the SCA14-associated variants, mediated by the kinase domain that is involved in amyloid-like fibril formation as well as the C2 domain of PKCγ. Pharmacological up-regulation of Hsp70 by the Hsp90 inhibitors celastrol and herbimycin A attenuated the aggregation of mutant PKCγ in primary cultured Purkinje cells. Up-regulation of Hsp70 diminished net PKCγ aggregation by preventing aggregate formation, resulting in decreased levels of apoptotic cell death among primary cultured Purkinje cells expressing the PKCγ variant. Of note, herbimycin A also ameliorated abnormal dendritic development. Extending our in vitro observations, administration of celastrol to mice up-regulated cerebellar Hsp70. Our findings identify heat shock proteins as important endogenous regulators of pathophysiological PKCγ aggregation and point to Hsp90 inhibition as a potential therapeutic strategy in the treatment of SCA14.
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Affiliation(s)
- Aoi Nakazono
- From the Biosignal Research Center, Kobe University, Kobe 657-8501
| | - Naoko Adachi
- From the Biosignal Research Center, Kobe University, Kobe 657-8501,
| | | | - Takahiro Seki
- the Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862-0973
| | - Daizo Hamada
- the Graduate School of Engineering and.,Center for Applied Structural Science (CASS), Kobe University, 7-1-48 Minatojima Minami Machi, Chuo-ku, Kobe 650-0047, and
| | - Takehiko Ueyama
- From the Biosignal Research Center, Kobe University, Kobe 657-8501
| | - Norio Sakai
- the Department of Molecular and Pharmacological Neuroscience, Graduate School of Biomedical Science, Hiroshima University, Hiroshima 734-8551, Japan
| | - Naoaki Saito
- From the Biosignal Research Center, Kobe University, Kobe 657-8501,
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74
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Xu L, Zhao W, Wang D, Ma X. Chinese Medicine in the Battle Against Obesity and Metabolic Diseases. Front Physiol 2018; 9:850. [PMID: 30042690 PMCID: PMC6048988 DOI: 10.3389/fphys.2018.00850] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/14/2018] [Indexed: 01/08/2023] Open
Abstract
Obesity is a multi-factor chronic disease caused by the mixed influence of genetics, environments and an imbalance of energy intake and expenditure. Due to lifestyle changes, modern society sees a rapid increase in obesity occurrence along with an aggravated risk of metabolic syndromes in the general population, including diabetes, hepatic steatosis, cardiovascular diseases and certain types of cancer. Although obesity has become a serious worldwide public health hazard, effective and safe drugs treating obesity are still missing. Traditional Chinese medicine (TCM) has been implicated in practical use in China for thousands of years and has accumulated substantial front line experience in treating various diseases. Compared to western medicine that features defined composition and clear molecular mechanisms, TCM is consisted with complex ingredients from plants and animals and prescribed based on overall symptoms and collective experience. Because of their fundamental differences, TCM and western medicine were once considered irreconcilable. However, nowadays, sophisticated isolation technologies and deepened molecular understanding of the active ingredients of TCM are gradually bridging the gap between the two, enabling the identification of active TCM components for drug development under the western-style paradigms. Thus, studies on TCM open a new therapeutic avenue and show great potential in the combat against obesity, though challenges exist. In this review, we highlight six key candidate substances derived from TCM, including artemisinin, curcumin, celastrol, capsaicin, berberine and ginsenosides, to review their recent discoveries in the metabolic field, with special focus on their therapeutic efficacy and molecular mechanisms in treating obesity and metabolic diseases. In addition, we discuss the translational challenges and perspectives in implementing modern Chinese medicine into the western pharmaceutical industry.
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Affiliation(s)
- Lingyan Xu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences, School of Life Sciences, East China Normal University, Shanghai, China
| | - Wenjun Zhao
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences, School of Life Sciences, East China Normal University, Shanghai, China
| | - Dongmei Wang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences, School of Life Sciences, East China Normal University, Shanghai, China
| | - Xinran Ma
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences, School of Life Sciences, East China Normal University, Shanghai, China
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75
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Han Z, Gu YY, Cong N, Ma R, Chi FL. Celastrol enhances Atoh1 expression in inner ear stem cells and promotes their differentiation into functional auditory neuronal-like cells. Organogenesis 2018; 14:82-93. [PMID: 29902110 PMCID: PMC6150060 DOI: 10.1080/15476278.2018.1462433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
We aimed to investigate the beneficial effect of Celastrol on inner ear stem cells and potential therapeutic value for hearing loss. The inner ear stem cells were isolated and characterized from utricular sensory epithelium of adult mice. The stemness was evaluated by sphere formation assay. The relative expressions of Atoh1, MAP-2 and Myosin VI were measured by RT-PCR and immunoblotting. The up-regulation of MAP-2 was also analysed with immunofluorescence. The in vitro neuronal excitability was interrogated by calcium oscillation. The electrophysiological property was determined by inward current recorded on patch clamp. Our results demonstrated that Celastrol treatment significantly improved the viability and proliferation of mouse inner ear stem cells, and facilitated sphere formation. Moreover, Celastrol stimulated differentiation of mouse inner ear stem cells to neuronal-like cells and enhanced neural excitability. Celastrol also enhanced neuronal-like cell identity in the inner ear stem cell derived neurons, as well as their electrophysiological function. Most notably, these effects were apparently associated with the upregulation of Atoh1 in response to Celastrol treatment. Celastrol showed beneficial effect on inner ear stem cells and held therapeutic promise against hearing loss.
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Affiliation(s)
- Zhao Han
- a Department of Otology and Skull Base Surgery of ENT Department , Eye and ENT Hospital, Fudan University , Shanghai , China.,b Shanghai Auditory Medicine Clinical Center of Shanghai Municipal Commission of Heath and Family Planning , Shanghai , PR China.,c Key Laboratory of Hearing Medicine of National Health Commission of the People's Republic of China , Shanghai , PR China.,d ENT Institute, Eye and ENT Hospital of Fudan University , Shanghai , PR China
| | - Yu-Yan Gu
- a Department of Otology and Skull Base Surgery of ENT Department , Eye and ENT Hospital, Fudan University , Shanghai , China.,b Shanghai Auditory Medicine Clinical Center of Shanghai Municipal Commission of Heath and Family Planning , Shanghai , PR China.,c Key Laboratory of Hearing Medicine of National Health Commission of the People's Republic of China , Shanghai , PR China.,d ENT Institute, Eye and ENT Hospital of Fudan University , Shanghai , PR China
| | - Ning Cong
- a Department of Otology and Skull Base Surgery of ENT Department , Eye and ENT Hospital, Fudan University , Shanghai , China.,b Shanghai Auditory Medicine Clinical Center of Shanghai Municipal Commission of Heath and Family Planning , Shanghai , PR China.,c Key Laboratory of Hearing Medicine of National Health Commission of the People's Republic of China , Shanghai , PR China.,d ENT Institute, Eye and ENT Hospital of Fudan University , Shanghai , PR China
| | - Rui Ma
- a Department of Otology and Skull Base Surgery of ENT Department , Eye and ENT Hospital, Fudan University , Shanghai , China.,b Shanghai Auditory Medicine Clinical Center of Shanghai Municipal Commission of Heath and Family Planning , Shanghai , PR China.,c Key Laboratory of Hearing Medicine of National Health Commission of the People's Republic of China , Shanghai , PR China.,d ENT Institute, Eye and ENT Hospital of Fudan University , Shanghai , PR China
| | - Fang-Lu Chi
- a Department of Otology and Skull Base Surgery of ENT Department , Eye and ENT Hospital, Fudan University , Shanghai , China.,b Shanghai Auditory Medicine Clinical Center of Shanghai Municipal Commission of Heath and Family Planning , Shanghai , PR China.,c Key Laboratory of Hearing Medicine of National Health Commission of the People's Republic of China , Shanghai , PR China.,d ENT Institute, Eye and ENT Hospital of Fudan University , Shanghai , PR China
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Abstract
Celastrol is a highly investigated anticancer moiety. It is a pentacyclic triterpenoid, isolated several decades ago with promising role in chemoprevention. Celastrol has been found to target multiple proinflammatory, angiogenic and metastatic proteins. Inhibition of these targets results in significant reduction of cancer growth, survival and metastasis. This review summarizes the varied molecular targets of celastrol along with insight into the various recently published clinical, preclinical and industrial patents (2011-2017).
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77
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Ekimova IV, Plaksina DV, Pastukhov YF, Lapshina KV, Lazarev VF, Mikhaylova ER, Polonik SG, Pani B, Margulis BA, Guzhova IV, Nudler E. New HSF1 inducer as a therapeutic agent in a rodent model of Parkinson's disease. Exp Neurol 2018; 306:199-208. [PMID: 29704482 DOI: 10.1016/j.expneurol.2018.04.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 03/17/2018] [Accepted: 04/24/2018] [Indexed: 01/03/2023]
Abstract
Molecular chaperone HSP70 (HSPA1A) has therapeutic potential in conformational neurological diseases. Here we evaluate the neuroprotective function of the chaperone in a rat model of Parkinson's disease (PD). We show that the knock-down of HSP70 (HSPA1A) in dopaminergic neurons of the Substantia nigra causes an almost 2-fold increase in neuronal death and multiple motor disturbances in animals. Conversely, pharmacological activation of HSF1 transcription factor and enhanced expression of inducible HSP70 with the echinochrome derivative, U-133, reverses the process of neurodegeneration, as evidenced by а increase in the number of tyrosine hydroxylase-containing neurons, and prevents the motor disturbances that are typical of the clinical stage of the disease. The neuroprotective effect caused by the elevation of HSP70 in nigral neurons is due to the ability of the chaperone to prevent α-synuclein aggregation and microglia activation. Our findings support the therapeutic relevance of HSP70 induction for the prevention and/or deceleration of PD-like neurodegeneration.
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Affiliation(s)
- Irina V Ekimova
- Laboratory of Comparative Thermophysiology, I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry of Russian Academy of Sciences, pr. Maurice Thorez, 44, St. Petersburg 194223, Russia.
| | - Daria V Plaksina
- Laboratory of Comparative Thermophysiology, I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry of Russian Academy of Sciences, pr. Maurice Thorez, 44, St. Petersburg 194223, Russia
| | - Yuri F Pastukhov
- Laboratory of Comparative Thermophysiology, I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry of Russian Academy of Sciences, pr. Maurice Thorez, 44, St. Petersburg 194223, Russia
| | - Ksenia V Lapshina
- Laboratory of Comparative Thermophysiology, I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry of Russian Academy of Sciences, pr. Maurice Thorez, 44, St. Petersburg 194223, Russia
| | - Vladimir F Lazarev
- Cell Protection Mechanisms Laboratory, Institute of Cytology Russian of Academy of Sciences, Tikhoretsky pr., 4, St. Petersburg 194064, Russia
| | - Elena R Mikhaylova
- Cell Protection Mechanisms Laboratory, Institute of Cytology Russian of Academy of Sciences, Tikhoretsky pr., 4, St. Petersburg 194064, Russia
| | - Sergey G Polonik
- G.B.Elyakov Pacific Institute of Bioorganic Chemistry of Far East Branch of Russian Academy of Sciences, pr. 100 let Vladivostoku 159, Vladivostok 690022, Russia
| | - Bibhusita Pani
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine NY, NY 10016, USA
| | - Boris A Margulis
- Cell Protection Mechanisms Laboratory, Institute of Cytology Russian of Academy of Sciences, Tikhoretsky pr., 4, St. Petersburg 194064, Russia
| | - Irina V Guzhova
- Cell Protection Mechanisms Laboratory, Institute of Cytology Russian of Academy of Sciences, Tikhoretsky pr., 4, St. Petersburg 194064, Russia.
| | - Evgeny Nudler
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine NY, NY 10016, USA; Howard Hughes Medical Institute, New York University School of Medicine NY, NY 10016, USA.
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Hu X, Jia M, Fu Y, Zhang P, Zhang Z, Lin Q. Novel Low-Toxic Derivative of Celastrol Maintains Protective Effect against Acute Renal Injury. ACS OMEGA 2018; 3:2652-2660. [PMID: 30023844 PMCID: PMC6045326 DOI: 10.1021/acsomega.7b01890] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 02/22/2018] [Indexed: 05/14/2023]
Abstract
This study aimed to novelly design and synthesize an amide derivative as a potential substitute of celastrol (CLT). We constituted the compound celastrol-glucosamine (CLG) by conjugating 1-(2-aminoethoxy)-2-glucosamine to celastrol (CLT) and confirmed its chemical structure by 1H NMR, 13C NMR, and LC-MS/MS. Then, the potential efficacy of the CLG was investigated on renal ischemia-reperfusion injury animal models. The results demonstrated that the decorated compound CLG could completely reverse the disease progression as same as CLT. Furthermore, the toxicity of CLG was also fully evaluated in rat blood, liver, kidney, heart, spleen, lung, and reproductive system. Compared to the performance of CLT on normal organs, CLG could remarkably maintain high safety and significantly reduce the side effects. Taken together, the CLG could keep the same efficacy as CLT while processing lower toxicity in vivo.
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79
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Liao WT, Xiao XY, Zhu Y, Zhou SP. The effect of celastrol on learning and memory in diabetic rats after sevoflurane inhalation. Arch Med Sci 2018; 14:370-380. [PMID: 29593812 PMCID: PMC5868673 DOI: 10.5114/aoms.2016.63740] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 08/15/2016] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION The aim was to devise an animal model showing some of the neuropathological changes seen in senile dementia, and to investigate the effect of celastrol on cognition neuropathology in this model. MATERIAL AND METHODS Forty male Sprague Dawley rats weighing 300-350 g were randomly divided into 5 groups (n = 8 each): control (Con); inhaled sevoflurane (Sev); diabetes mellitus (DM); diabetes mellitus + inhaled sevoflurane (DM/Sev); diabetes + inhaled sevoflurane + celastrol (Cel). Diabetes was induced by an intraperitoneal injection of streptozotocin (STZ). After 20 days, the Sev, DM/Sev and Cel group rats inhaled 3% sevoflurane for 2 h, while the control and DM groups inhaled air. Cel group rats were given intraperitoneal injections of celastrol (0.7 mg/kg) daily for 4 days, while the control group received intraperitoneal injections of an equal volume of dimethylsulfoxide. The Morris water maze test was performed to test cognition. Animals were killed after the last water maze test and Congo red staining was used to observe deposition of amyloid substance in the hippocampus. The expression of GFAP and IGF-1 in the hippocampus was observed by immunohistochemistry. RESULTS Diabetes decreased cognition, increased amyloid substance and GFAP expression, and decreased IGF-1 expression in the hippocampus (all p-values < 0.05). Sevoflurane administration intensified and celastrol decreased these changes (all p-values < 0.05). CONCLUSIONS Sev/DM rats showed cognitive and neurochemical changes similar to those seen in senile dementia. Celastrol decreased these changes and should be evaluated further as a possible clinical agent in dementia.
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Affiliation(s)
- Wei-Tao Liao
- Department of Anaesthesiology, Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Xiao-Yu Xiao
- Department of Anaesthesiology, Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Yinaxian Zhu
- Department of Anaesthesiology, Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Shao-Peng Zhou
- Department of Anaesthesiology, Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
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80
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Nelson VK, Ali A, Dutta N, Ghosh S, Jana M, Ganguli A, Komarov A, Paul S, Dwivedi V, Chatterjee S, Jana NR, Lakhotia SC, Chakrabarti G, Misra AK, Mandal SC, Pal M. Azadiradione ameliorates polyglutamine expansion disease in Drosophila by potentiating DNA binding activity of heat shock factor 1. Oncotarget 2018; 7:78281-78296. [PMID: 27835876 PMCID: PMC5346638 DOI: 10.18632/oncotarget.12930] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 08/21/2016] [Indexed: 01/14/2023] Open
Abstract
Aggregation of proteins with the expansion of polyglutamine tracts in the brain underlies progressive genetic neurodegenerative diseases (NDs) like Huntington's disease and spinocerebellar ataxias (SCA). An insensitive cellular proteotoxic stress response to non-native protein oligomers is common in such conditions. Indeed, upregulation of heat shock factor 1 (HSF1) function and its target protein chaperone expression has shown promising results in animal models of NDs. Using an HSF1 sensitive cell based reporter screening, we have isolated azadiradione (AZD) from the methanolic extract of seeds of Azadirachta indica, a plant known for its multifarious medicinal properties. We show that AZD ameliorates toxicity due to protein aggregation in cell and fly models of polyglutamine expansion diseases to a great extent. All these effects are correlated with activation of HSF1 function and expression of its target protein chaperone genes. Notably, HSF1 activation by AZD is independent of cellular HSP90 or proteasome function. Furthermore, we show that AZD directly interacts with purified human HSF1 with high specificity, and facilitates binding of HSF1 to its recognition sequence with higher affinity. These unique findings qualify AZD as an ideal lead molecule for consideration for drug development against NDs that affect millions worldwide.
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Affiliation(s)
- Vinod K Nelson
- Division of Molecular Medicine, Bose Institute, Kolkata, West Bengal, India.,Department of Pharmaceutical Technology, Pharmacognosy and Phytotherapy Laboratory, Jadavpur University, Jadavpur, West Bengal, India
| | - Asif Ali
- Division of Molecular Medicine, Bose Institute, Kolkata, West Bengal, India
| | - Naibedya Dutta
- Division of Molecular Medicine, Bose Institute, Kolkata, West Bengal, India
| | - Suvranil Ghosh
- Division of Molecular Medicine, Bose Institute, Kolkata, West Bengal, India
| | - Manas Jana
- Division of Molecular Medicine, Bose Institute, Kolkata, West Bengal, India
| | - Arnab Ganguli
- Dr. B. C. Guha Center for Genetic Engineering and Biotechnology, University of Calcutta, Kolkata, West Bengal, India
| | - Andrei Komarov
- Cellecta Inc, Mountain View, California, United States of America
| | - Soumyadip Paul
- Division of Molecular Medicine, Bose Institute, Kolkata, West Bengal, India
| | - Vibha Dwivedi
- Department of Zoology, Cytogenetics Laboratory, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | | | - Nihar R Jana
- Cellular and Molecular Neuroscience Laboratory, National Brain Research Institute, Manesar, Gurgaon, Haryana, India
| | - Subhash C Lakhotia
- Department of Zoology, Cytogenetics Laboratory, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Gopal Chakrabarti
- Dr. B. C. Guha Center for Genetic Engineering and Biotechnology, University of Calcutta, Kolkata, West Bengal, India
| | - Anup K Misra
- Division of Molecular Medicine, Bose Institute, Kolkata, West Bengal, India
| | - Subhash C Mandal
- Department of Pharmaceutical Technology, Pharmacognosy and Phytotherapy Laboratory, Jadavpur University, Jadavpur, West Bengal, India
| | - Mahadeb Pal
- Division of Molecular Medicine, Bose Institute, Kolkata, West Bengal, India
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81
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Gu L, Kwong JMK, Yadegari D, Yu F, Caprioli J, Piri N. The effect of celastrol on the ocular hypertension-induced degeneration of retinal ganglion cells. Neurosci Lett 2018; 670:89-93. [PMID: 29398521 DOI: 10.1016/j.neulet.2018.01.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 01/08/2018] [Accepted: 01/22/2018] [Indexed: 01/19/2023]
Abstract
Celastrol, a quinine methide triterpene extracted from the perennial vine Tripterygium wilfordii, has been identified as a neuroprotective agent in various models of neurodegenerative disorders. We have reported earlier that systemic and intravitreal administration of celastrol stimulate the survival of retinal ganglion cells (RGCs) injured by optic nerve crush (ONC) and that mechanisms underlying celastrol׳s RGC protection may be associated with inhibition of TNF-alpha-mediated cell death. The present study evaluates the effect of celastrol on the survival of RGCs injured by ocular hypertension. Intraocular pressure (IOP) elevation resulted in approximately 23% of RGCs loss. Reduction in RGC numbers was observed in all four retinal quadrants: 30% in superior, 17% in inferior, 11% in nasal and 35% in temporal regions. Celastrol (1 mg/kg) or vehicle (DMSO) was administered three times per week by intraperitoneal injection, starting on the day of laser photocoagulation of the TM and continued for the entire duration of the experiment (5 weeks). Celastrol treatment stimulated RGC survival by an average of 24% in the entire retina compared to the vehicle-treated group. RGC numbers were increased in all four quadrants: approximately 40%, 17%, 15% and 30% more RGCs were counted in the superior, inferior, nasal and temporal regions, respectively. The average RGC numbers for the entire retinas of the celastrol/IOP group were only ∼5% and 10% lower than that in vehicle- or celastrol-injected animals with normal IOP, respectively. Our data indicate a significant celastrol-mediated neuroprotection against elevated IOP-induced injury.
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Affiliation(s)
- Lei Gu
- Jules Stein Eye Institute, USA
| | | | | | - Fei Yu
- Jules Stein Eye Institute, USA
| | - Joseph Caprioli
- Jules Stein Eye Institute, USA; Brain Research Institute, University of California Los Angeles, Los Angeles, CA, USA
| | - Natik Piri
- Jules Stein Eye Institute, USA; Brain Research Institute, University of California Los Angeles, Los Angeles, CA, USA.
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82
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Azadiradione Restores Protein Quality Control and Ameliorates the Disease Pathogenesis in a Mouse Model of Huntington’s Disease. Mol Neurobiol 2018; 55:6337-6346. [DOI: 10.1007/s12035-017-0853-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 12/19/2017] [Indexed: 11/25/2022]
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83
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Brunquell J, Morris S, Snyder A, Westerheide SD. Coffee extract and caffeine enhance the heat shock response and promote proteostasis in an HSF-1-dependent manner in Caenorhabditis elegans. Cell Stress Chaperones 2018; 23:65-75. [PMID: 28674941 PMCID: PMC5741582 DOI: 10.1007/s12192-017-0824-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 06/12/2017] [Accepted: 06/14/2017] [Indexed: 01/05/2023] Open
Abstract
As the population ages, there is a critical need to uncover strategies to combat diseases of aging. Studies in the soil-dwelling nematode Caenorhabditis elegans have demonstrated the protective effects of coffee extract and caffeine in promoting the induction of conserved longevity pathways including the insulin-like signaling pathway and the oxidative stress response. We were interested in determining the effects of coffee and caffeine treatment on the regulation of the heat shock response. The heat shock response is a highly conserved cellular response that functions as a cytoprotective mechanism during stress, mediated by the heat shock transcription factor HSF-1. In the worm, HSF-1 not only promotes protection against stress but is also essential for development and longevity. Induction of the heat shock response has been suggested to be beneficial for diseases of protein conformation by preventing protein misfolding and aggregation, and as such has been proposed as a therapeutic target for age-associated neurodegenerative disorders. In this study, we demonstrate that coffee is a potent, dose-dependent, inducer of the heat shock response. Treatment with a moderate dose of pure caffeine was also able to induce the heat shock response, indicating caffeine as an important component within coffee for producing this response. The effects that we observe with both coffee and pure caffeine on the heat shock response are both dependent on HSF-1. In a C. elegans Huntington's disease model, worms treated with caffeine were protected from polyglutamine aggregates and toxicity, an effect that was also HSF-1-dependent. In conclusion, these results demonstrate caffeinated coffee, and pure caffeine, as protective substances that promote proteostasis through induction of the heat shock response.
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Affiliation(s)
- Jessica Brunquell
- Department of Cell Biology, Microbiology, and Molecular Biology, College of Arts and Sciences, University of South Florida, 4202 E. Fowler Ave, ISA 2015, Tampa, FL, 33620, USA
| | - Stephanie Morris
- Department of Cell Biology, Microbiology, and Molecular Biology, College of Arts and Sciences, University of South Florida, 4202 E. Fowler Ave, ISA 2015, Tampa, FL, 33620, USA
| | - Alana Snyder
- Department of Cell Biology, Microbiology, and Molecular Biology, College of Arts and Sciences, University of South Florida, 4202 E. Fowler Ave, ISA 2015, Tampa, FL, 33620, USA
| | - Sandy D Westerheide
- Department of Cell Biology, Microbiology, and Molecular Biology, College of Arts and Sciences, University of South Florida, 4202 E. Fowler Ave, ISA 2015, Tampa, FL, 33620, USA.
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84
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Wu T, Liu S, Wen G, Xu J, Yu Y, Chai Y. Celastrol improves self-renewal and differentiation of human tendon-derived stem cells by suppressing Smad7 through hypoxia. Stem Cell Res Ther 2017; 8:274. [PMID: 29202812 PMCID: PMC5715986 DOI: 10.1186/s13287-017-0724-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 10/29/2017] [Accepted: 11/10/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND We aimed to evaluate the potential enhancing effect of celastrol on the stemness of human tendon-derived stem cells (hTSCs) in vitro and the underlying molecular mechanisms. METHODS The capability of hTSC self-renewal was assessed by cell proliferation and colony formation as determined with the CCK-8 kit. Adipogenesis, chondrogenesis, and osteogenesis were determined by Oil Red O, Alcian Blue, and Alizarin Red staining, respectively. The relative mRNA levels of Sox9, PPARγ, Runx2, Smad7, and HIF1α were determined by real-time polymerase chain reaction (PCR). The levels of Smad7 and HIF1α protein were measured by immunoblotting. The chromatin immunoprecipitation (ChIP) assay was used to assess the direct binding of HIF1α to the Smad7 promoter. Suppression of Smad7 induced by hypoxia was examined using the luciferase reporter assay. RESULTS We found that treatment with celastrol resulted in improvement in both the multi-differentiation potential and self-renewal capability of hTSCs. Celastrol elicited hypoxia and subsequently suppressed the expression of Smad7 through direct association with the hypoxia response element consensus sequence. Further, we demonstrated that both Smad7 and HIF1α were involved in the beneficial effects of celastrol on the differentiation and self-renewal of hTSCs. CONCLUSIONS We demonstrated the positive effect of celastrol on the stemness of hTSCs and elucidated the essential role of the HIF1α-Smad7 pathway in this process.
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Affiliation(s)
- Tianyi Wu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200033, People's Republic of China
| | - Shenghe Liu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200033, People's Republic of China
| | - Gen Wen
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200033, People's Republic of China
| | - Jia Xu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200033, People's Republic of China
| | - Yaling Yu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200033, People's Republic of China
| | - Yimin Chai
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai, 200033, People's Republic of China.
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Gámez A, Yuste-Checa P, Brasil S, Briso-Montiano Á, Desviat L, Ugarte M, Pérez-Cerdá C, Pérez B. Protein misfolding diseases: Prospects of pharmacological treatment. Clin Genet 2017; 93:450-458. [DOI: 10.1111/cge.13088] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 06/16/2017] [Accepted: 06/27/2017] [Indexed: 12/21/2022]
Affiliation(s)
- A. Gámez
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER); Instituto de Investigación Sanitaria IdiPAZ; Madrid Spain
| | - P. Yuste-Checa
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER); Instituto de Investigación Sanitaria IdiPAZ; Madrid Spain
| | - S. Brasil
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER); Instituto de Investigación Sanitaria IdiPAZ; Madrid Spain
| | - Á. Briso-Montiano
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER); Instituto de Investigación Sanitaria IdiPAZ; Madrid Spain
| | - L.R. Desviat
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER); Instituto de Investigación Sanitaria IdiPAZ; Madrid Spain
| | - M. Ugarte
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER); Instituto de Investigación Sanitaria IdiPAZ; Madrid Spain
| | - C. Pérez-Cerdá
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER); Instituto de Investigación Sanitaria IdiPAZ; Madrid Spain
| | - B. Pérez
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-SO UAM-CSIC, Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid/Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER); Instituto de Investigación Sanitaria IdiPAZ; Madrid Spain
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86
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Wang D, Calabrese EJ, Lian B, Lin Z, Calabrese V. Hormesis as a mechanistic approach to understanding herbal treatments in traditional Chinese medicine. Pharmacol Ther 2017; 184:42-50. [PMID: 29080703 DOI: 10.1016/j.pharmthera.2017.10.013] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Traditional Chinese medicine (TCM) has been long practiced and is becoming ever more widely recognized as providing curative and/or healing treatments for a number of diseases and physiological conditions. This paper posits that herbal medicines used in TCM treatments may act through hormetic dose-response mechanisms. It is proposed that the stimulatory (i.e., low dose) and inhibitory (i.e., high dose) components of the hormetic dose response correspond to respective "regulating" and "curing" aspects of TCM herbal treatments. Specifically, the "regulating" functions promote adaptive or preventive responses, while "curing" treatments alleviate the clinical symptoms. Patterns of hormetic responses are described, and the applicability of these processes to herbal medicines of TCM are explicated. It is noted that a research agenda aimed at elucidating these mechanisms and patterns would be expansive and complex. However, we argue its value, in that hormesis may afford something akin to a Rosetta Stone with which to interpret, translate, and explain TCM herbology in ways that are aligned with biomedical perspectives that could enable a more integrative approach to medicine.
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Affiliation(s)
- Dali Wang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Post-doctoral Research Station, College of Civil Engineering, Tongji University, Shanghai 200092, China
| | - Edward J Calabrese
- Department of Public Health, Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA 01003, USA
| | - Baoling Lian
- Huadong Hospital Affiliated to Fudan University, No. 221 West Yan'an Road, Shanghai, China
| | - Zhifen Lin
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Collaborative Innovation Center for Regional Environmental Quality, Beijing, China; Shanghai Key Lab of Chemical Assessment and Sustainability, Shanghai, China.
| | - Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, Faculty of Medicine, University of Catania, 95125 Catania, Italy
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87
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Dunlop RA, Powell J, Guillemin GJ, Cox PA. Mechanisms of L-Serine Neuroprotection in vitro Include ER Proteostasis Regulation. Neurotox Res 2017; 33:123-132. [PMID: 29098664 DOI: 10.1007/s12640-017-9829-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 09/27/2017] [Accepted: 10/06/2017] [Indexed: 01/14/2023]
Abstract
β-N-methylamino-L-alanine (L-BMAA) is a neurotoxic non-protein amino acid produced by cyanobacteria. Recently, chronic dietary exposure to L-BMAA was shown to trigger neuropathology in nonhuman primates consistent with Guamanian ALS/PDC, a paralytic disease that afflicts Chamorro villagers who consume traditional food items contaminated with L-BMAA. However, the addition of the naturally occurring amino acid L-serine to the diet of the nonhuman primates resulted in a significant reduction in ALS/PDC neuropathology. L-serine is a dietary amino acid that plays a crucial role in central nervous system development, neuronal signaling, and synaptic plasticity and has been shown to impart neuroprotection from L-BMAA-induced neurotoxicity both in vitro and in vivo. We have previously shown that L-serine prevents the formation of autofluorescent aggregates and death by apoptosis in human cell lines and primary cells. These effects are likely imparted by L-serine blocking incorporation of L-BMAA into proteins hence preventing proteotoxic stress. However, there are likely other mechanisms for L-serine-mediated neuroprotection. Here, we explore the molecular mechanisms of L-serine neuroprotection using a human unfolded protein response real-time PCR array with genes from the ER stress and UPR pathways, and western blotting. We report that L-serine caused the differential expression of many of the same genes as L-BMAA, even though concentrations of L-serine in the culture medium were ten times lower than that of L-BMAA. We propose that L-serine may be functioning as a small proteostasis regulator, in effect altering the cells to quickly respond to a possible oxidative insult, thus favoring a return to homeostasis.
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Affiliation(s)
- R A Dunlop
- Brain Chemistry Labs, The Institute for Ethnomedicine, Jackson, WY, USA.,Neuroinflammation Group, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, Australia
| | - J Powell
- Brain Chemistry Labs, The Institute for Ethnomedicine, Jackson, WY, USA
| | - G J Guillemin
- Neuroinflammation Group, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, Australia
| | - P A Cox
- Brain Chemistry Labs, The Institute for Ethnomedicine, Jackson, WY, USA.
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88
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Dukler N, Booth GT, Huang YF, Tippens N, Waters CT, Danko CG, Lis JT, Siepel A. Nascent RNA sequencing reveals a dynamic global transcriptional response at genes and enhancers to the natural medicinal compound celastrol. Genome Res 2017; 27:1816-1829. [PMID: 29025894 PMCID: PMC5668940 DOI: 10.1101/gr.222935.117] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 09/13/2017] [Indexed: 12/16/2022]
Abstract
Most studies of responses to transcriptional stimuli measure changes in cellular mRNA concentrations. By sequencing nascent RNA instead, it is possible to detect changes in transcription in minutes rather than hours and thereby distinguish primary from secondary responses to regulatory signals. Here, we describe the use of PRO-seq to characterize the immediate transcriptional response in human cells to celastrol, a compound derived from traditional Chinese medicine that has potent anti-inflammatory, tumor-inhibitory, and obesity-controlling effects. Celastrol is known to elicit a cellular stress response resembling the response to heat shock, but the transcriptional basis of this response remains unclear. Our analysis of PRO-seq data for K562 cells reveals dramatic transcriptional effects soon after celastrol treatment at a broad collection of both coding and noncoding transcription units. This transcriptional response occurred in two major waves, one within 10 min, and a second 40-60 min after treatment. Transcriptional activity was generally repressed by celastrol, but one distinct group of genes, enriched for roles in the heat shock response, displayed strong activation. Using a regression approach, we identified key transcription factors that appear to drive these transcriptional responses, including members of the E2F and RFX families. We also found sequence-based evidence that particular transcription factors drive the activation of enhancers. We observed increased polymerase pausing at both genes and enhancers, suggesting that pause release may be widely inhibited during the celastrol response. Our study demonstrates that a careful analysis of PRO-seq time-course data can disentangle key aspects of a complex transcriptional response, and it provides new insights into the activity of a powerful pharmacological agent.
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Affiliation(s)
- Noah Dukler
- Simons Center for Quantitative Biology, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA
- Tri-Institutional Training Program in Computational Biology and Medicine, New York, New York 10065, USA
| | - Gregory T Booth
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14850, USA
| | - Yi-Fei Huang
- Simons Center for Quantitative Biology, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA
| | - Nathaniel Tippens
- Tri-Institutional Training Program in Computational Biology and Medicine, New York, New York 10065, USA
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14850, USA
| | - Colin T Waters
- Program in Biological and Biomedical Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Charles G Danko
- Baker Institute for Animal Health, Cornell University, Ithaca, New York 14850, USA
| | - John T Lis
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14850, USA
| | - Adam Siepel
- Simons Center for Quantitative Biology, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA
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89
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Jannuzzi AT, Kara M, Alpertunga B. Celastrol ameliorates acetaminophen-induced oxidative stress and cytotoxicity in HepG2 cells. Hum Exp Toxicol 2017; 37:742-751. [DOI: 10.1177/0960327117734622] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Acetaminophen (APAP) is the most commonly used analgesic and antipyretic drug in the world. However, hepatotoxicity caused by APAP overdose is the most frequent cause of acute liver failure worldwide and oxidative stress involved in the pathogenesis of APAP hepatotoxicity. Celastrol is a natural triterpenoid derived from Tripterygium wilfordii Hook F. that exhibits antioxidant, anti-inflammatory, and antitumor activities. In this study, we aimed to investigate the potential ameliorative effects of celastrol against APAP-induced cytotoxicity and oxidative stress. Human hepatocellular carcinoma cells (HepG2) were incubated with 20 mM of APAP for 24 h and posttreated with 50 nM, 100 nM, or 200 nM of celastrol for a further 24 h. The methylthiazolyldiphenyl-tetrazolium bromide, lactate dehydrogenase, and neutral red uptake assays showed celastrol posttreatments recovered cell viability and cell membrane integrity in a concentration-dependent manner. Celastrol posttreatments exerted a significant increase in the glutathione content and a decrease in the malondialdehyde and protein carbonylation levels. Also, celastrol posttreatments attenuated the APAP-induced oxidative stress by raising glutathione peroxidase, glutathione reductase, and catalase activities. However, superoxide dismutase activity did not change. In conclusion, celastrol treatment may improve cell viability and increase cellular antioxidant defense in HepG2 cells. These results suggest that celastrol may have the potential to ameliorate the APAP-induced oxidative stress and cytotoxicity.
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Affiliation(s)
- AT Jannuzzi
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, Beyazit, Istanbul, Turkey
| | - M Kara
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, Beyazit, Istanbul, Turkey
| | - B Alpertunga
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, Beyazit, Istanbul, Turkey
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90
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Dayalan Naidu S, Dikovskaya D, Gaurilcikaite E, Knatko EV, Healy ZR, Mohan H, Koh G, Laurell A, Ball G, Olagnier D, de la Vega L, Ganley IG, Talalay P, Dinkova-Kostova AT. Transcription factors NRF2 and HSF1 have opposing functions in autophagy. Sci Rep 2017; 7:11023. [PMID: 28887499 PMCID: PMC5591275 DOI: 10.1038/s41598-017-11262-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 08/22/2017] [Indexed: 12/19/2022] Open
Abstract
Autophagy plays a critical role in the maintenance of cellular homeostasis by degrading proteins, lipids and organelles. Autophagy is activated in response to stress, but its regulation in the context of other stress response pathways, such as those mediated by heat shock factor 1 (HSF1) and nuclear factor-erythroid 2 p45-related factor 2 (NRF2), is not well understood. We found that the Michael acceptor bis(2-hydoxybenzylidene)acetone (HBB2), a dual activator of NRF2 and HSF1, protects against the development of UV irradiation-mediated cutaneous squamous cell carcinoma in mice. We further show that HBB2 is an inducer of autophagy. In cells, HBB2 increases the levels of the autophagy-cargo protein p62/sequestosome 1, and the lipidated form of microtubule-associated protein light chain 3 isoform B. Activation of autophagy by HBB2 is impaired in NRF2-deficient cells, which have reduced autophagic flux and low basal and induced levels of p62. Conversely, HSF1-deficient cells have increased autophagic flux under both basal as well as HBB2-induced conditions, accompanied by increased p62 levels. Our findings suggest that NRF2 and HSF1 have opposing roles during autophagy, and illustrate the existence of tight mechanistic links between the cellular stress responses.
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Affiliation(s)
- Sharadha Dayalan Naidu
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Dina Dikovskaya
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Egle Gaurilcikaite
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
- Wolfson Centre for Age-Related Diseases, King's College London, London, UK
| | - Elena V Knatko
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Zachary R Healy
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
- Department of Pulmonary and Critical Care Medicine and Department of Internal Medicine, Duke University Hospital, Durham, NC, 27705, USA
| | - Hema Mohan
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Glenn Koh
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Axel Laurell
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Graeme Ball
- Dundee Imaging Facility, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - David Olagnier
- Lady Davis Institute-Jewish General Hospital, McGill University, Division of Experimental Medicine, Montreal, QC, Canada
- Department of Biomedicine, Aarhus Research Center for Innate Immunology, Aarhus University, Aarhus, 8000, Denmark
| | - Laureano de la Vega
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Ian G Ganley
- The Medical Research Council (MRC) Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland, UK
| | - Paul Talalay
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Albena T Dinkova-Kostova
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK.
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
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91
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Kalmar B, Greensmith L. Cellular Chaperones As Therapeutic Targets in ALS to Restore Protein Homeostasis and Improve Cellular Function. Front Mol Neurosci 2017; 10:251. [PMID: 28943839 PMCID: PMC5596081 DOI: 10.3389/fnmol.2017.00251] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 07/26/2017] [Indexed: 12/12/2022] Open
Abstract
Heat shock proteins (Hsps) are ubiquitously expressed chaperone proteins that enable cells to cope with environmental stresses that cause misfolding and denaturation of proteins. With aging this protein quality control machinery becomes less effective, reducing the ability of cells to cope with damaging environmental stresses and disease-causing mutations. In neurodegenerative disorders such as Amyotrophic Lateral Sclerosis (ALS), such mutations are known to result in protein misfolding, which in turn results in the formation of intracellular aggregates cellular dysfunction and eventual neuronal death. The exact cellular pathology of ALS and other neurodegenerative diseases has been elusive and thus, hindering the development of effective therapies. However, a common scheme has emerged across these "protein misfolding" disorders, in that the mechanism of disease involves one or more aspects of proteostasis; from DNA transcription, RNA translation, to protein folding, transport and degradation via proteosomal and autophagic pathways. Interestingly, members of the Hsp family are involved in each of these steps facilitating normal protein folding, regulating the rate of protein synthesis and degradation. In this short review we summarize the evidence that suggests that ALS is a disease of protein dyshomeostasis in which Hsps may play a key role. Overwhelming evidence now indicates that enabling protein homeostasis to cope with disease-causing mutations might be a successful therapeutic strategy in ALS, as well as other neurodegenerative diseases. Novel small molecule co-inducers of Hsps appear to be able to achieve this aim. Arimoclomol, a hydroxylamine derivative, has shown promising results in cellular and animal models of ALS, as well as other protein misfolding diseases such as Inclusion Body Myositis (IBM). Initial clinical investigations of Arimoclomol have shown promising results. Therefore, it is possible that the long series of unsuccessful clinical trials for ALS may soon be reversed, as optimal targeting of proteostasis in ALS may now be possible, and may deliver clinical benefit to patients.
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Affiliation(s)
- Bernadett Kalmar
- Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of NeurologyLondon, United Kingdom
| | - Linda Greensmith
- Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of NeurologyLondon, United Kingdom
- MRC Centre for Neuromuscular Disease, UCL Institute of NeurologyLondon, United Kingdom
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92
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Figueiredo SA, Salvador JA, Cortés R, Cascante M. Novel celastrol derivatives with improved selectivity and enhanced antitumour activity: Design, synthesis and biological evaluation. Eur J Med Chem 2017; 138:422-437. [DOI: 10.1016/j.ejmech.2017.06.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 06/14/2017] [Accepted: 06/15/2017] [Indexed: 12/22/2022]
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93
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Abstract
The microtubule-associated protein tau (MAPT, tau) forms neurotoxic aggregates that promote cognitive deficits in tauopathies, the most common of which is Alzheimer's disease (AD). The 90-kDa heat shock protein (Hsp90) chaperone system affects the accumulation of these toxic tau species, which can be modulated with Hsp90 inhibitors. However, many Hsp90 inhibitors are not blood-brain barrier-permeable, and several present associated toxicities. Here, we find that the cochaperone, activator of Hsp90 ATPase homolog 1 (Aha1), dramatically increased the production of aggregated tau. Treatment with an Aha1 inhibitor, KU-177, dramatically reduced the accumulation of insoluble tau. Aha1 colocalized with tau pathology in human brain tissue, and this association positively correlated with AD progression. Aha1 overexpression in the rTg4510 tau transgenic mouse model promoted insoluble and oligomeric tau accumulation leading to a physiological deficit in cognitive function. Overall, these data demonstrate that Aha1 contributes to tau fibril formation and neurotoxicity through Hsp90. This suggests that therapeutics targeting Aha1 may reduce toxic tau oligomers and slow or prevent neurodegenerative disease progression.
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94
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Celastrol and Its Role in Controlling Chronic Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 928:267-289. [PMID: 27671821 DOI: 10.1007/978-3-319-41334-1_12] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Celastrol, a triterpenoid derived from traditional Chinese medicinal plants, has anti-inflammatory, antioxidant, and anticancer activities. Celastrol has shown preventive/therapeutic effects in experimental models of several chronic diseases. These include, chronic inflammatory and autoimmune diseases (e.g., rheumatoid arthritis, multiple sclerosis, systemic lupus erythematosus, inflammatory bowel disease, and psoriasis), neurodegenerative disorders (e.g., Alzheimer's disease, Parkinson's disease, and Amyotrophic lateral sclerosis), atherosclerosis, obesity, Type 2 diabetes, and cancer. Celastrol modulates intricate cellular pathways and networks associated with disease pathology, and it interrupts or redirects the aberrant cellular and molecular events so as to limit disease progression and facilitate recovery, where feasible. The major cell signaling pathways modulated by celastrol include the NF-kB pathway, MAPK pathway, JAK/STAT pathway, PI3K/Akt/mTOR pathway, and antioxidant defense mechanisms. Furthermore, celastrol modulates cell proliferation, apoptosis, proteasome activity, heat-shock protein response, innate and adaptive immune responses, angiogenesis, and bone remodeling. Current understanding of the mechanisms of action of celastrol and information about its disease-modulating activities in experimental models have set the stage for testing celastrol in clinical studies as a therapeutic agent for several chronic human diseases.
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95
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Dayalan Naidu S, Dinkova-Kostova AT. Regulation of the mammalian heat shock factor 1. FEBS J 2017; 284:1606-1627. [PMID: 28052564 DOI: 10.1111/febs.13999] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 11/17/2016] [Accepted: 01/03/2017] [Indexed: 12/21/2022]
Abstract
Living organisms are endowed with the capability to tackle various forms of cellular stress due to the presence of molecular chaperone machinery complexes that are ubiquitous throughout the cell. During conditions of proteotoxic stress, the transcription factor heat shock factor 1 (HSF1) mediates the elevation of heat shock proteins, which are crucial components of the chaperone complex machinery and function to ameliorate protein misfolding and aggregation and restore protein homeostasis. In addition, HSF1 orchestrates a versatile transcriptional programme that includes genes involved in repair and clearance of damaged macromolecules and maintenance of cell structure and metabolism, and provides protection against a broad range of cellular stress mediators, beyond heat shock. Here, we discuss the structure and function of the mammalian HSF1 and its regulation by post-translational modifications (phosphorylation, sumoylation and acetylation), proteasomal degradation, and small-molecule activators and inhibitors.
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Affiliation(s)
- Sharadha Dayalan Naidu
- Division of Cancer Research, School of Medicine, Jacqui Wood Cancer Centre, University of Dundee, UK
| | - Albena T Dinkova-Kostova
- Division of Cancer Research, School of Medicine, Jacqui Wood Cancer Centre, University of Dundee, UK
- Department of Pharmacology and Molecular Sciences, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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96
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Shan WG, Wang HG, Chen Y, Wu R, Wen YT, Zhang LW, Ying YM, Wang JW, Zhan ZJ. Synthesis of 3- and 29-substituted celastrol derivatives and structure-activity relationship studies of their cytotoxic activities. Bioorg Med Chem Lett 2017; 27:3450-3453. [PMID: 28587825 DOI: 10.1016/j.bmcl.2017.05.083] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 05/25/2017] [Accepted: 05/26/2017] [Indexed: 01/19/2023]
Abstract
A series of 3-carbamate and 29-ester celastrol derivatives (compounds 1-26) were designed and synthesized. These analogues were evaluated for their cytotoxic activities against several cancer cell lines. Cytotoxicity data revealed that the properties of substituents and substitution position had important influence on cytotoxic activity. Modification of C-3 hydroxyl with size-limited groups did not reduce the activity obviously. The introduction of polarity group like piperazine could improve the solubility. Compound 23 was chosen to further evaluate anti-tumor efficacy in vivo. It showed higher inhibition rate and better safety than celastrol during in vivo experiment by intragastric administration. The preliminary antitumor studies of compound 23in vivo showed that it might be promising for the development of new antitumor agents.
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Affiliation(s)
- Wei-Guang Shan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Han-Guang Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Yan Chen
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Rui Wu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Yan-Tao Wen
- The Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310003, PR China
| | - Li-Wen Zhang
- The Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310003, PR China
| | - You-Min Ying
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Jian-Wei Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Zha-Jun Zhan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, PR China.
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97
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Hu L, Wu H, Li B, Song D, Yang G, Chen G, Xie B, Xu Z, Zhang Y, Yu D, Hou J, Xiao W, Sun X, Chang G, Zhang Y, Gao L, Dai B, Tao Y, Shi J, Zhu W. Dihydrocelastrol inhibits multiple myeloma cell proliferation and promotes apoptosis through ERK1/2 and IL-6/STAT3 pathways in vitro and in vivo. Acta Biochim Biophys Sin (Shanghai) 2017; 49:420-427. [PMID: 28338993 DOI: 10.1093/abbs/gmx021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Indexed: 12/14/2022] Open
Abstract
Multiple myeloma (MM) is the second most frequent malignant hematological disease. Dihydrocelastrol (DHCE) is synthesized by hydrogenated celastrol, a treterpene isolated from Chinese medicinal plant Tripterygium regelii. In this study, we first reported the anti-tumor activity of DHCE on MM cells. We found that DHCE could inhibit cell proliferation and promote apoptosis through caspase-dependent way in vitro. In addition, DHCE could inactivate the expression of interleukin (IL)-6 and downregulate the phosphorylation of extracellular regulated protein kinases (ERK1/2) and the signal transducer and activator of transcription 3 (STAT3) in MM. It also retained its activity against MM cell lines in the presence of IL-6. Furthermore, treatment of MM cells with DHCE resulted in an accumulation of cells in G0/G1 phase of the cell cycle. Notably, DHCE reduced the expression of cyclin D1 and cyclin-dependent kinases 4 and 6 in MM cell lines. Additionally, its efficacy toward the MM cell lines could be enhanced in combination with the histone deacetylase inhibitor panobinostat (LBH589), which implied the possibility of the combination treatment of DHCE and LBH589 as a potential therapeutic strategy in MM. In addition, treatment of NCI-H929 tumor-bearing nude mice with DHCE (10 mg/kg/d, i.p., 1-14 days) resulted in 73% inhibition of the tumor growth in vivo. Taken together, the results of our present study indicated that DHCE could inhibit cellular proliferation and induce cell apoptosis in myeloma cells mediated through different mechanisms, possibly through inhibiting the IL-6/STAT3 and ERK1/2 pathways. And it may provide a new therapeutic option for MM patients.
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Affiliation(s)
- Liangning Hu
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Huiqun Wu
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Bo Li
- CAS Key Laboratory of Receptor Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Dongliang Song
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Guang Yang
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Gege Chen
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Bingqian Xie
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Zhijian Xu
- CAS Key Laboratory of Receptor Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yong Zhang
- CAS Key Laboratory of Receptor Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Dandan Yu
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Jun Hou
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Wenqin Xiao
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Xi Sun
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Gaomei Chang
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Yiwen Zhang
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Lu Gao
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Bojie Dai
- College of Life Science and Technology, Tongji University, Shanghai 200092, China
| | - Yi Tao
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Jumei Shi
- Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Weiliang Zhu
- CAS Key Laboratory of Receptor Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
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98
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Bose S, Cho J. Targeting chaperones, heat shock factor-1, and unfolded protein response: Promising therapeutic approaches for neurodegenerative disorders. Ageing Res Rev 2017; 35:155-175. [PMID: 27702699 DOI: 10.1016/j.arr.2016.09.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 09/02/2016] [Accepted: 09/26/2016] [Indexed: 12/22/2022]
Abstract
Protein misfolding, which is known to cause several serious diseases, is an emerging field that addresses multiple therapeutic areas. Misfolding of a disease-specific protein in the central nervous system ultimately results in the formation of toxic aggregates that may accumulate in the brain, leading to neuronal cell death and dysfunction, and associated clinical manifestations. A large number of neurodegenerative diseases in humans, including Alzheimer's, Parkinson's, Huntington's, and prion diseases, are primarily caused by protein misfolding and aggregation. Notably, the cellular system is equipped with a protein quality control system encompassing chaperones, ubiquitin proteasome system, and autophagy, as a defense mechanism that monitors protein folding and eliminates inappropriately folded proteins. As the intrinsic molecular mechanisms of protein misfolding become more clearly understood, the novel therapeutic approaches in this arena are gaining considerable interest. The present review will describe the chaperones network and different approaches as the therapeutic targets for neurodegenerative diseases. Current and emerging therapeutic approaches to combat neurodegenerative diseases, addressing the roles of molecular, chemical, and pharmacological chaperones, as well as heat shock factor-1 and the unfolded protein response, are also discussed in detail.
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Affiliation(s)
- Shambhunath Bose
- College of Pharmacy, Dongguk University-Seoul, Goyang, Gyeonggi-do 10326, Republic of Korea
| | - Jungsook Cho
- College of Pharmacy, Dongguk University-Seoul, Goyang, Gyeonggi-do 10326, Republic of Korea.
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99
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Therapeutic Strategies Under Development Targeting Inflammatory Mechanisms in Amyotrophic Lateral Sclerosis. Mol Neurobiol 2017; 55:2789-2813. [DOI: 10.1007/s12035-017-0532-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 04/06/2017] [Indexed: 12/11/2022]
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100
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Huang C, Hu W, Wang J, Tong L, Lu X, Wu F, Ling Y, Jiang B, Zhang W, Chen Z, Xiong Q, Qin Y, Yang R. Methylene blue increases the amount of HSF1 through promotion of PKA-mediated increase in HSF1-p300 interaction. Int J Biochem Cell Biol 2017; 84:75-88. [DOI: 10.1016/j.biocel.2017.01.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 01/09/2017] [Accepted: 01/11/2017] [Indexed: 02/07/2023]
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