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Liu K, Qu Y, Li B, Zeng N, Yao G, Wu X, Xu H, Yan C, Wu L. GRP94 in cerebrospinal fluid may contribute to a potential biomarker of depression: Based on proteomics. J Psychiatr Res 2024; 169:328-340. [PMID: 38081093 DOI: 10.1016/j.jpsychires.2023.11.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 11/03/2023] [Accepted: 11/15/2023] [Indexed: 01/15/2024]
Abstract
The present study was designed to investigate potential biomarkers of depression and targets of antidepressants from the perspective of hippocampal endoplasmic reticulum stress (ERS) based on cerebrospinal fluid (CSF) proteomics. Firstly, a six-week depression model was established and treated with fluoxetine (FLX). We found antidepressant-FLX could ameliorate depression-like behaviors and cognition in depressed rats caused by chronic unpredictable mild stress (CUMS). FLX significantly increased neuronal numbers in dentate gyrus (DG) and CA3 regions of hippocampus. CSF proteome data revealed thirty-seven differentially expressed proteins (DEPs) co-regulated by CUMS and FLX, including GRP94 and EIF2α. Results of Gene Oncology (GO) annotation and KEGG pathway enrichment for DEPs mainly included PERK-mediated unfolded protein response, endoplasmic reticulum, and translational initiation. The expression levels of GRP94, p-PERK, p-EIF2α, CHOP and Caspase-12 were increased in hippocampus of CUMS rats, and FLX worked the opposite way. FLX had strong affinity and binding activity with GRP94 protein, and four key proteins on the PERK pathway (PERK, EIF2α, p-EIF2α, CHOP). We proposed that FLX may exert antidepressant effects and neuroprotective action by alleviating excessive activation of the hippocampal PERK pathway and reducing neuronal deficits in depressed rats. PERK, EIF2α, p-EIF2α, and CHOP may be potential targets for antidepressant-FLX. GRP94 in CSF may be a potential biomarker of depression and the therapeutic effects of antidepressants.
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Affiliation(s)
- Kaige Liu
- Integrative Medicine Research Center, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yue Qu
- Integrative Medicine Research Center, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Bozhi Li
- Integrative Medicine Research Center, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Ningxi Zeng
- Department of Rehabilitation Medicine, The People's Hospital of Longhua District, Shenzhen, 518109, China
| | - Gaolei Yao
- Integrative Medicine Research Center, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Xiaofeng Wu
- Integrative Medicine Research Center, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Hanfang Xu
- Integrative Medicine Research Center, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Can Yan
- Integrative Medicine Research Center, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Lili Wu
- Integrative Medicine Research Center, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
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Hou Y, Liang Z, Qi L, Tang C, Liu X, Tang J, Zhao Y, Zhang Y, Fang T, Luo Q, Wang S, Wang F. Baicalin Targets HSP70/90 to Regulate PKR/PI3K/AKT/eNOS Signaling Pathways. Molecules 2022; 27:1432. [PMID: 35209223 PMCID: PMC8874410 DOI: 10.3390/molecules27041432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 02/04/2023] Open
Abstract
Baicalin is a major active ingredient of traditional Chinese medicine Scutellaria baicalensis, and has been shown to have antiviral, anti-inflammatory, and antitumor activities. However, the protein targets of baicalin have remained unclear. Herein, a chemical proteomics strategy was developed by combining baicalin-functionalized magnetic nanoparticles (BCL-N3@MNPs) and quantitative mass spectrometry to identify the target proteins of baicalin. Bioinformatics analysis with the use of Gene Ontology, STRING and Ingenuity Pathway Analysis, was performed to annotate the biological functions and the associated signaling pathways of the baicalin targeting proteins. Fourteen proteins in human embryonic kidney cells were identified to interact with baicalin with various binding affinities. Bioinformatics analysis revealed these proteins are mainly ATP-binding and/or ATPase activity proteins, such as CKB, HSP86, HSP70-1, HSP90, ATPSF1β and ACTG1, and highly associated with the regulation of the role of PKR in interferon induction and the antiviral response signaling pathway (P = 10-6), PI3K/AKT signaling pathway (P = 10-5) and eNOS signaling pathway (P = 10-4). The results show that baicalin exerts multiply pharmacological functions, such as antiviral, anti-inflammatory, antitumor, and antioxidant functions, through regulating the PKR and PI3K/AKT/eNOS signaling pathways by targeting ATP-binding and ATPase activity proteins. These findings provide a fundamental insight into further studies on the mechanism of action of baicalin.
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Affiliation(s)
- Yinzhu Hou
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.H.); (Z.L.); (L.Q.); (C.T.); (X.L.); (J.T.); (Y.Z.); (Y.Z.); (T.F.)
- College of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zuqing Liang
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.H.); (Z.L.); (L.Q.); (C.T.); (X.L.); (J.T.); (Y.Z.); (Y.Z.); (T.F.)
- College of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Luyu Qi
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.H.); (Z.L.); (L.Q.); (C.T.); (X.L.); (J.T.); (Y.Z.); (Y.Z.); (T.F.)
- College of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Tang
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.H.); (Z.L.); (L.Q.); (C.T.); (X.L.); (J.T.); (Y.Z.); (Y.Z.); (T.F.)
| | - Xingkai Liu
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.H.); (Z.L.); (L.Q.); (C.T.); (X.L.); (J.T.); (Y.Z.); (Y.Z.); (T.F.)
- College of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jilin Tang
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.H.); (Z.L.); (L.Q.); (C.T.); (X.L.); (J.T.); (Y.Z.); (Y.Z.); (T.F.)
- College of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yao Zhao
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.H.); (Z.L.); (L.Q.); (C.T.); (X.L.); (J.T.); (Y.Z.); (Y.Z.); (T.F.)
| | - Yanyan Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.H.); (Z.L.); (L.Q.); (C.T.); (X.L.); (J.T.); (Y.Z.); (Y.Z.); (T.F.)
| | - Tiantian Fang
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.H.); (Z.L.); (L.Q.); (C.T.); (X.L.); (J.T.); (Y.Z.); (Y.Z.); (T.F.)
| | - Qun Luo
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.H.); (Z.L.); (L.Q.); (C.T.); (X.L.); (J.T.); (Y.Z.); (Y.Z.); (T.F.)
- College of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shijun Wang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Fuyi Wang
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; (Y.H.); (Z.L.); (L.Q.); (C.T.); (X.L.); (J.T.); (Y.Z.); (Y.Z.); (T.F.)
- College of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
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O’Connor S, Le Bihan YV, Westwood IM, Liu M, Mak OW, Zazeri G, Povinelli APR, Jones AM, van Montfort R, Reynisson J, Collins I. Discovery and Characterization of a Cryptic Secondary Binding Site in the Molecular Chaperone HSP70. Molecules 2022; 27:817. [PMID: 35164081 PMCID: PMC8839746 DOI: 10.3390/molecules27030817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 12/23/2022] Open
Abstract
Heat Shock Protein 70s (HSP70s) are key molecular chaperones that are overexpressed in many cancers and often associated with metastasis and poor prognosis. It has proven difficult to develop ATP-competitive, drug-like small molecule inhibitors of HSP70s due to the flexible and hydrophilic nature of the HSP70 ATP-binding site and its high affinity for endogenous nucleotides. The aim of this study was to explore the potential for the inhibition of HSP70 through alternative binding sites using fragment-based approaches. A surface plasmon resonance (SPR) fragment screen designed to detect secondary binding sites in HSP70 led to the identification by X-ray crystallography of a cryptic binding site in the nucleotide-binding domain (NBD) of HSP70 adjacent to the ATP-binding site. Fragment binding was confirmed and characterized as ATP-competitive using SPR and ligand-observed NMR methods. Molecular dynamics simulations were applied to understand the interactions with the protein upon ligand binding, and local secondary structure changes consistent with interconversion between the observed crystal structures with and without the cryptic pocket were detected. A virtual high-throughput screen (vHTS) against the cryptic pocket was conducted, and five compounds with diverse chemical scaffolds were confirmed to bind to HSP70 with micromolar affinity by SPR. These results identified and characterized a new targetable site on HSP70. While targeting HSP70 remains challenging, the new site may provide opportunities to develop allosteric ATP-competitive inhibitors with differentiated physicochemical properties from current series.
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Affiliation(s)
- Suzanne O’Connor
- Cancer Research UK Cancer Therapeutics Unit, The Institute of Cancer Research, London SM2 5NG, UK; (S.O.); (Y.-V.L.B.); (I.M.W.); (M.L.); (R.v.M.)
| | - Yann-Vaï Le Bihan
- Cancer Research UK Cancer Therapeutics Unit, The Institute of Cancer Research, London SM2 5NG, UK; (S.O.); (Y.-V.L.B.); (I.M.W.); (M.L.); (R.v.M.)
| | - Isaac M. Westwood
- Cancer Research UK Cancer Therapeutics Unit, The Institute of Cancer Research, London SM2 5NG, UK; (S.O.); (Y.-V.L.B.); (I.M.W.); (M.L.); (R.v.M.)
| | - Manjuan Liu
- Cancer Research UK Cancer Therapeutics Unit, The Institute of Cancer Research, London SM2 5NG, UK; (S.O.); (Y.-V.L.B.); (I.M.W.); (M.L.); (R.v.M.)
| | - Oi Wei Mak
- School of Pharmacy and Bioengineering, Keele University, Keele ST5 5BG, UK; (O.W.M.); (J.R.)
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Gabriel Zazeri
- School of Pharmacy, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (G.Z.); (A.P.R.P.); (A.M.J.)
- Departamento de Física, Instituto de Biociências, Letras e Ciências Exatas (IBILCE), UNESP, Rua Cristovão Colombo 2265, São José do Rio Preto 15054-000, Brazil
| | - Ana P. R. Povinelli
- School of Pharmacy, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (G.Z.); (A.P.R.P.); (A.M.J.)
- Departamento de Física, Instituto de Biociências, Letras e Ciências Exatas (IBILCE), UNESP, Rua Cristovão Colombo 2265, São José do Rio Preto 15054-000, Brazil
| | - Alan M. Jones
- School of Pharmacy, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (G.Z.); (A.P.R.P.); (A.M.J.)
| | - Rob van Montfort
- Cancer Research UK Cancer Therapeutics Unit, The Institute of Cancer Research, London SM2 5NG, UK; (S.O.); (Y.-V.L.B.); (I.M.W.); (M.L.); (R.v.M.)
| | - Jóhannes Reynisson
- School of Pharmacy and Bioengineering, Keele University, Keele ST5 5BG, UK; (O.W.M.); (J.R.)
| | - Ian Collins
- Cancer Research UK Cancer Therapeutics Unit, The Institute of Cancer Research, London SM2 5NG, UK; (S.O.); (Y.-V.L.B.); (I.M.W.); (M.L.); (R.v.M.)
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Wen J, Hadden MK. Affinity-based protein profiling identifies vitamin D3 as a heat shock protein 70 antagonist that regulates hedgehog transduction in murine basal cell carcinoma. Eur J Med Chem 2022; 228:114005. [PMID: 34844141 DOI: 10.1016/j.ejmech.2021.114005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/05/2021] [Accepted: 11/16/2021] [Indexed: 11/18/2022]
Abstract
Vitamin D3 (VD3) is a seco-steroid that inhibits the Hedgehog (Hh) signaling pathway. Initial studies suggested its anti-Hh activity results from direct inhibition of Smoothened, a seven-transmembrane cell surface receptor that is a key regulator of the Hh signaling cascade. More recently, a role for the Vitamin D Receptor in mediating inhibition of Hh-signaling by seco-steroid has been suggested. Herein, an affinity-based protein profiling study was carried out to better understand the cellular proteins that govern VD3-mediated anti-Hh activity. We synthesized a novel biotinylated VD3 analogue (8) for use as a chemical probe to explore cellular binding targets of the seco-steroidal scaffold. Through a series of pull-down experiments and follow up mass spectrum analyses, heat shock protein 70 (Hsp70) was identified as a primary binding protein of VD3. Hsp70 was validated as a binding target of VD3 through a series of biochemical and cellular assays. VD3 bound with micromolar affinity to Hsp70. In addition, both selective knockdown of Hsp70 expression and pharmacological inhibition of its activity with known Hsp70 inhibitors suppressed Hh-signaling transduction in murine basal cell carcinoma cells, suggesting that Hsp70 regulates proper Hh-signaling. Additional cellular assays suggest that VD3 and its seco-steroidal metabolites inhibit Hh-signaling through different mechanisms.
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Affiliation(s)
- Jiachen Wen
- Department of Pharmaceutical Sciences, University of Connecticut, 69 North Eagleville Rd, Unit 3092, Storrs, CT, 06029-3092, United States
| | - M Kyle Hadden
- Department of Pharmaceutical Sciences, University of Connecticut, 69 North Eagleville Rd, Unit 3092, Storrs, CT, 06029-3092, United States.
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Martin TG, Delligatti CE, Muntu NA, Stachowski-Doll MJ, Kirk JA. Pharmacological inhibition of BAG3-HSP70 with the proposed cancer therapeutic JG-98 is toxic for cardiomyocytes. J Cell Biochem 2022; 123:128-141. [PMID: 34487557 PMCID: PMC10037808 DOI: 10.1002/jcb.30140] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 07/11/2021] [Accepted: 08/26/2021] [Indexed: 11/06/2022]
Abstract
The co-chaperone Bcl2-associated athanogene-3 (BAG3) maintains cellular protein quality control through the regulation of heat shock protein 70 (HSP70). Cancer cells manipulate BAG3-HSP70-regulated pathways for tumor initiation and proliferation, which has led to the development of promising small molecule therapies, such as JG-98, which inhibit the BAG3-HSP70 interaction and mitigate tumor growth. However, it is not known how these broad therapies impact cardiomyocytes, where the BAG3-HSP70 complex is a key regulator of protein turnover and contractility. Here, we show that JG-98 exposure is toxic in neonatal rat ventricular myocytes (NRVMs). Using immunofluorescence microscopy to assess cell death, we found that apoptosis increased in NRVMs treated with JG-98 doses as low as 10 nM. JG-98 treatment also reduced autophagy flux and altered expression of BAG3 and several binding partners involved in BAG3-dependent autophagy, including SYNPO2 and HSPB8. We next assessed protein half-life with disruption of the BAG3-HSP70 complex by treating with JG-98 in the presence of cycloheximide and found BAG3, HSPB5, and HSPB8 half-lives were reduced, indicating that complex formation with HSP70 is important for their stability. Next, we assessed sarcomere structure using super-resolution microscopy and found that disrupting the interaction with HSP70 leads to sarcomere structural disintegration. To determine whether the effects of JG-98 could be mitigated by pharmacological autophagy induction, we cotreated NRVMs with rapamycin, which partially reduced the extent of apoptosis and sarcomere disarray. Finally, we investigated whether the effects of JG-98 extended to skeletal myocytes using C2C12 myotubes and found again increased apoptosis and reduced autophagic flux. Together, our data suggest that nonspecific targeting of the BAG3-HSP70 complex to treat cancer may be detrimental for cardiac and skeletal myocytes.
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Affiliation(s)
| | | | | | | | - Jonathan A. Kirk
- Corresponding Author: Jonathan A. Kirk, Ph.D., Department of Cell and Molecular Physiology, Loyola University Chicago Stritch School of Medicine, Center for Translational Research, Room 522, 2160 S. First Ave., Maywood, IL 60153, Ph: 708-216-6348,
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Bassot A, Prip-Buus C, Alves A, Berdeaux O, Perrier J, Lenoir V, Ji-Cao J, Berger MA, Loizon E, Cabaret S, Panthu B, Rieusset J, Morio B. Loss and gain of function of Grp75 or mitofusin 2 distinctly alter cholesterol metabolism, but all promote triglyceride accumulation in hepatocytes. Biochim Biophys Acta Mol Cell Biol Lipids 2021; 1866:159030. [PMID: 34419589 DOI: 10.1016/j.bbalip.2021.159030] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 08/03/2021] [Accepted: 08/13/2021] [Indexed: 12/15/2022]
Abstract
In the liver, contact sites between the endoplasmic reticulum (ER) and mitochondria (named MAMs) may be crucial hubs for the regulation of lipid metabolism, thus contributing to the exacerbation or prevention of fatty liver. We hypothesized that tether proteins located at MAMs could play a key role in preventing triglyceride accumulation in hepatocytes and nonalcoholic fatty liver disease (NAFLD) occurrence. To test this, we explored the role of two key partners in building MAM integrity and functionality, the glucose-regulated protein 75 (Grp75) and mitofusin 2 (Mfn2), which liver contents are altered in obesity and NAFLD. Grp75 or Mfn2 expression was either silenced using siRNA or overexpressed with adenoviruses in Huh7 cells. Silencing of Grp75 and Mfn2 resulted in decreased ER-mitochondria interactions, mitochondrial network fusion state and mitochondrial oxidative capacity, while overexpression of the two proteins induced mirror impacts on these parameters. Furthermore, Grp75 or Mfn2 silencing decreased cellular cholesterol content and enhanced triglyceride secretion in ApoB100 lipoproteins, while their overexpression led to reverse effects. Cellular phosphatidylcholine/phosphatidylethanolamine ratio was decreased only upon overexpression of the proteins, potentially contributing to altered ApoB100 assembly and secretion. Despite the opposite differences, both silencing and overexpression of Grp75 or Mfn2 induced triglyceride storage, although a fatty acid challenge was required to express the alteration upon protein silencing. Among the mechanisms potentially involved in this phenotype, ER stress was closely associated with altered triglyceride metabolism after Grp75 or Mfn2 overexpression, while blunted mitochondrial FA oxidation capacity may be the main defect causing triglyceride accumulation upon Grp75 or Mfn2 silencing. Further studies are required to decipher the link between modulation of Grp75 or Mfn2 expression, change in MAM integrity and alteration of cholesterol content of the cell. In conclusion, Grp75 or Mfn2 silencing and overexpression in Huh7 cells contribute to altering MAM integrity and cholesterol storage in opposite directions, but all promote triglyceride accumulation through distinct cellular pathways. This study also highlights that besides Mfn2, Grp75 could play a central role in hepatic lipid and cholesterol metabolism in obesity and NAFLD.
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Affiliation(s)
- Arthur Bassot
- CarMeN Laboratory, INSERM U1060, INRAE U1397, Université Lyon 1, 69008 Lyon, France.
| | - Carina Prip-Buus
- Institut Cochin, Département d'Endocrinologie, Métabolisme et Diabète, INSERM U1016/CNRS UMR8104/Université de Paris, 75014 Paris, France.
| | - Anaïs Alves
- CarMeN Laboratory, INSERM U1060, INRAE U1397, Université Lyon 1, 69008 Lyon, France.
| | - Olivier Berdeaux
- ChemoSens Platform, Centre des Sciences du Goût et de l'Alimentation, CNRS, INRA, Université Bourgogne Franche-Comté, Agrosup Dijon, F-21000 Dijon, France.
| | - Johan Perrier
- CarMeN Laboratory, INSERM U1060, INRAE U1397, Université Lyon 1, 69008 Lyon, France.
| | - Véronique Lenoir
- Institut Cochin, Département d'Endocrinologie, Métabolisme et Diabète, INSERM U1016/CNRS UMR8104/Université de Paris, 75014 Paris, France.
| | - Jingwei Ji-Cao
- CarMeN Laboratory, INSERM U1060, INRAE U1397, Université Lyon 1, 69008 Lyon, France.
| | - Marie-Agnès Berger
- CarMeN Laboratory, INSERM U1060, INRAE U1397, Université Lyon 1, 69008 Lyon, France.
| | - Emmanuelle Loizon
- CarMeN Laboratory, INSERM U1060, INRAE U1397, Université Lyon 1, 69008 Lyon, France.
| | - Stephanie Cabaret
- ChemoSens Platform, Centre des Sciences du Goût et de l'Alimentation, CNRS, INRA, Université Bourgogne Franche-Comté, Agrosup Dijon, F-21000 Dijon, France.
| | - Baptiste Panthu
- CarMeN Laboratory, INSERM U1060, INRAE U1397, Université Lyon 1, 69008 Lyon, France.
| | - Jennifer Rieusset
- CarMeN Laboratory, INSERM U1060, INRAE U1397, Université Lyon 1, 69008 Lyon, France.
| | - Béatrice Morio
- CarMeN Laboratory, INSERM U1060, INRAE U1397, Université Lyon 1, 69008 Lyon, France.
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Khan AU, Khan A, Khan A, Shal B, Aziz A, Ahmed MN, Islam SU, Ali H, Shehzad A, Khan S. Inhibition of NF-κB signaling and HSP70/HSP90 proteins by newly synthesized hydrazide derivatives in arthritis model. Naunyn Schmiedebergs Arch Pharmacol 2021; 394:1497-1519. [PMID: 33713158 DOI: 10.1007/s00210-021-02075-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 03/01/2021] [Indexed: 01/02/2023]
Abstract
In the current study, the N-benzylidene-4-((2-hydroxynaphthalene-1-yl) diazenyl) hydrazides (NCHDH and NTHDH) were evaluated against the Carrageenan- and CFA-induced models. During the preliminary investigation, the NCHDH and NTHDH treatment showed marked anti-inflammatory and analgesic activity against the Carrageenan-induced acute model. Once the anti-inflammatory activity was established against acute Carrageenan model, the NCHDH and NTHDH were evaluated against the chronic CFA-induced arthritis model. The NCHDH and NTHDH treatment markedly attenuated the inflammatory and analgesic parameters compared to CFA-treated group. Furthermore, the increase in the oxidative stress and attenuation of antioxidant enzymes has been reported following CFA administration. However, NCHDH and NTHDH treatment significantly induced the antioxidants and attenuated the oxidative stress markers. The CFA administration showed marked tailing of DNA; however, the NCHDH- and NTHDH-treated group preserved DNA integrity. Furthermore, the histological studies showed marked alteration in the CFA-treated group; however, the NCHDH and NTHDH treatment markedly improved the histological features. The Western blot, immunohistology, and ELISA assay revealed marked increase in the Nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), Jun N-terminal Kinase (JNK), TNF-α, and COX-2 levels; however, the NCHDH and NTHDH attenuated their expressions significantly. Similarly, the NCHDH and NTHDH significantly induced the mRNA expression levels of heat shock proteins. The computational analysis showed significant binding interaction with various protein targets via multiple hydrogens, and hydrophobic bonds. The in vivo pharmacokinetic study was also performed to assess the various pharmacokinetic parameters. In conclusion, the NCHDH and NTHDH treatment showed significant anti-arthritic activity against Carrageenan and CFA models.
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Affiliation(s)
- Ashraf Ullah Khan
- Pharmacological Sciences Research Lab, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Amna Khan
- Pharmacological Sciences Research Lab, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Adnan Khan
- Pharmacological Sciences Research Lab, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Bushra Shal
- Pharmacological Sciences Research Lab, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Abdul Aziz
- Department of Chemistry, The University of Azad Jammu and Kashmir, Muzaffarabad, 13100, Pakistan
| | - Muhammad Naeem Ahmed
- Department of Chemistry, The University of Azad Jammu and Kashmir, Muzaffarabad, 13100, Pakistan
| | - Salman Ul Islam
- School of Life Sciences, College of Natural Sciences, Kyungpook National University, Daegu, South Korea
| | - Hussain Ali
- Pharmacological Sciences Research Lab, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Adeeb Shehzad
- Department of Biomedical Engineering & Sciences, School of Mechanical and Manufacturing Engineering (SMME), National University of Sciences & Technology (NUST), Islamabad, Pakistan
| | - Salman Khan
- Pharmacological Sciences Research Lab, Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.
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8
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Colunga Biancatelli RML, Solopov P, Gregory B, Catravas JD. The HSP90 Inhibitor, AUY-922, Protects and Repairs Human Lung Microvascular Endothelial Cells from Hydrochloric Acid-Induced Endothelial Barrier Dysfunction. Cells 2021; 10:cells10061489. [PMID: 34199261 PMCID: PMC8232030 DOI: 10.3390/cells10061489] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/02/2021] [Accepted: 06/10/2021] [Indexed: 12/20/2022] Open
Abstract
Exposure to hydrochloric acid (HCl) leads acutely to asthma-like symptoms, acute respiratory distress syndrome (ARDS), including compromised alveolo-capillary barrier, and respiratory failure. To better understand the direct effects of HCl on pulmonary endothelial function, we studied the characteristics of HCl-induced endothelial barrier dysfunction in primary cultures of human lung microvascular endothelial cells (HLMVEC), defined the involved molecular pathways, and tested the potentially beneficial effects of Heat Shock Protein 90 (HSP90) inhibitors. HCl impaired barrier function in a time- and concentration-dependent manner and was associated with activation of Protein Kinase B (AKT), Ras homolog family member A (RhoA) and myosin light chain 2 (MLC2), as well as loss of plasmalemmal VE-cadherin, rearrangement of cortical actin, and appearance of inter-endothelial gaps. Pre-treatment or post-treatment of HLMVEC with AUY-922, a third-generation HSP90 inhibitor, prevented and restored HCl-induced endothelial barrier dysfunction. AUY-922 increased the expression of HSP70 and inhibited the activation (phosphorylation) of extracellular-signal regulated kinase (ERK) and AKT. AUY-922 also prevented the HCl-induced activation of RhoA and MLC2 and the internalization of plasmalemmal VE-cadherin. We conclude that, by increasing the expression of cytoprotective proteins, interfering with actomyosin contractility, and enhancing the expression of junction proteins, inhibition of HSP90 may represent a useful approach for the management of HCl-induced endothelial dysfunction and acute lung injury.
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Affiliation(s)
- Ruben M. L. Colunga Biancatelli
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA 23508, USA; (P.S.); (B.G.); (J.D.C.)
- Correspondence:
| | - Pavel Solopov
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA 23508, USA; (P.S.); (B.G.); (J.D.C.)
| | - Betsy Gregory
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA 23508, USA; (P.S.); (B.G.); (J.D.C.)
| | - John D. Catravas
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA 23508, USA; (P.S.); (B.G.); (J.D.C.)
- School of Medical Diagnostic & Translational Sciences, College of Health Sciences, Old Dominion University, Norfolk, VA 23508, USA
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9
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Sojka DR, Hasterok S, Vydra N, Toma-Jonik A, Wieczorek A, Gogler-Pigłowska A, Scieglinska D. Inhibition of the Heat Shock Protein A (HSPA) Family Potentiates the Anticancer Effects of Manumycin A. Cells 2021; 10:1418. [PMID: 34200371 PMCID: PMC8229576 DOI: 10.3390/cells10061418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 12/14/2022] Open
Abstract
Manumycin A (MA) is a well-tolerated natural antibiotic showing pleiotropic anticancer effects in various preclinical in vitro and in vivo models. Anticancer drugs may themselves act as stressors to induce the cellular adaptive mechanism that can minimize their cytotoxicity. Heat shock proteins (HSPs) as cytoprotective factors can counteract the deleterious effects of various stressful stimuli. In this study, we examined whether the anticancer effects of MA can be counteracted by the mechanism related to HSPs belonging to the HSPA (HSP70) family. We found that MA caused cell type-specific alterations in the levels of HSPAs. These changes included concomitant upregulation of the stress-inducible (HSPA1 and HSPA6) and downregulation of the non-stress-inducible (HSPA2) paralogs. However, neither HSPA1 nor HSPA2 were necessary to provide protection against MA in lung cancer cells. Conversely, the simultaneous repression of several HSPA paralogs using pan-HSPA inhibitors (VER-155008 or JG-98) sensitized cancer cells to MA. We also observed that genetic ablation of the heat shock factor 1 (HSF1) transcription factor, a main transactivator of HSPAs expression, sensitized MCF7 cells to MA treatment. Our study reveals that inhibition of HSF1-mediated heat shock response (HSR) can improve the anticancer effect of MA. These observations suggest that targeting the HSR- or HSPA-mediated adaptive mechanisms may be a promising strategy for further preclinical developments.
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Affiliation(s)
- Damian Robert Sojka
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology Gliwice Branch, 44-102 Gliwice, Poland; (D.R.S.); (S.H.); (N.V.); (A.T.-J.); (A.G.-P.)
| | - Sylwia Hasterok
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology Gliwice Branch, 44-102 Gliwice, Poland; (D.R.S.); (S.H.); (N.V.); (A.T.-J.); (A.G.-P.)
| | - Natalia Vydra
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology Gliwice Branch, 44-102 Gliwice, Poland; (D.R.S.); (S.H.); (N.V.); (A.T.-J.); (A.G.-P.)
| | - Agnieszka Toma-Jonik
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology Gliwice Branch, 44-102 Gliwice, Poland; (D.R.S.); (S.H.); (N.V.); (A.T.-J.); (A.G.-P.)
| | - Anna Wieczorek
- Division of Medical Biology, Institute of Biology, Jan Kochanowski University, 25-406 Kielce, Poland;
| | - Agnieszka Gogler-Pigłowska
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology Gliwice Branch, 44-102 Gliwice, Poland; (D.R.S.); (S.H.); (N.V.); (A.T.-J.); (A.G.-P.)
| | - Dorota Scieglinska
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology Gliwice Branch, 44-102 Gliwice, Poland; (D.R.S.); (S.H.); (N.V.); (A.T.-J.); (A.G.-P.)
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10
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Wang Z, Song T, Guo Z, Uwituze LB, Guo Y, Zhang H, Wang H, Zhang X, Pan H, Ji T, Yin F, Zhou S, Dai J, Zhang Z. A novel Hsp70 inhibitor specifically targeting the cancer-related Hsp70-Bim protein-protein interaction. Eur J Med Chem 2021; 220:113452. [PMID: 33906046 DOI: 10.1016/j.ejmech.2021.113452] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/29/2021] [Accepted: 04/02/2021] [Indexed: 12/21/2022]
Abstract
Targeting cancer-related Hsp70-Bim protein-protein interactions (PPIs) offers a new strategy for the design of Hsp70 inhibitors. Herein, we discovered a novel Hsp70 inhibitor, S1g-6, based on the established BH3 mimetics. S1g-6 exhibited sub-μM binding affinity toward Hsp70 and selectively disrupted Hsp70-Bim PPI. The target specificity of S1g-6in situ was validated by affinity-based protein profiling, co-immunoprecipitation, and cell-based shRNA assays. S1g-6 specifically antagonized the ATPase activity of Hsp70 upon recruiting Bim and showed selective apoptosis induction in some cancer cell lines over normal ones through suppression of some oncogenic clients of Hsp70, representing a new class of antitumor candidates. Hsp70-Bim PPI exhibited cancer-dependent role as a potential anti-cancer target.
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Affiliation(s)
- Ziqian Wang
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Ting Song
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, Liaoning, 116024, China.
| | - Zongwei Guo
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Laura B Uwituze
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Yafei Guo
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Hong Zhang
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Hang Wang
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Xiaodong Zhang
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Hao Pan
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Tong Ji
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Fangkui Yin
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Sheng Zhou
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Jian Dai
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, Liaoning, 116024, China
| | - Zhichao Zhang
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, Liaoning, 116024, China.
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11
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Tan Y, Li Y, Qu YX, Su Y, Peng Y, Zhao Z, Fu T, Wang XQ, Tan W. Aptamer-Peptide Conjugates as Targeted Chemosensitizers for Breast Cancer Treatment. ACS Appl Mater Interfaces 2021; 13:9436-9444. [PMID: 33306339 DOI: 10.1021/acsami.0c18282] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
High levels of heat shock protein 70 (HSP70) in tumors are commonly associated with poor prognosis, enhanced doxorubicin (DOX)-induced cardiotoxicity, and even drug resistance in DOX-related cancer chemotherapy. Several peptides possess remarkable protein inhibition and chemosensitization effects, which are attributed to their specific targeting ability against HSP70. However, the inherent poor cell penetration capacity considerably restricts the biomedical applications of these peptides. We herein describe the design and development of anti-MUC1 aptamer-peptide conjugates (ApPCs) as targeted chemosensitizers to overcome the above-mentioned issues. Moreover, DOX could be loaded on the ApPC to deliver the DOX-enclosed agent ApPC-DOX, which simultaneously acts as a targeted chemosensitizer and anticancer agent for combating drug resistance in breast cancer therapy. This innovative, engineered biocompatible conjugate not only enhances the sensitivity of DOX-resistant cells but also alleviates cardiotoxicity of DOX in vivo, highlighting the success of this targeted chemosensitizer strategy.
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Affiliation(s)
- Yan Tan
- Molecular Sciences and Biomedicine Laboratory (MBL), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha 410082, P. R. China
| | - Yingying Li
- Molecular Sciences and Biomedicine Laboratory (MBL), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha 410082, P. R. China
| | - Yi-Xin Qu
- Molecular Sciences and Biomedicine Laboratory (MBL), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha 410082, P. R. China
| | - Yuanye Su
- Molecular Sciences and Biomedicine Laboratory (MBL), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha 410082, P. R. China
| | - Yongbo Peng
- Molecular Sciences and Biomedicine Laboratory (MBL), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha 410082, P. R. China
| | - Zilong Zhao
- Molecular Sciences and Biomedicine Laboratory (MBL), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha 410082, P. R. China
| | - Ting Fu
- Institute of Molecular Medicine (IMM), Renji Hospital, Shanghai Jiao Tong University School of Medicine, and College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
- The Cancer Hospital of the University of Chinese Academy of Sciences, Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
| | - Xue-Qiang Wang
- Molecular Sciences and Biomedicine Laboratory (MBL), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha 410082, P. R. China
| | - Weihong Tan
- Molecular Sciences and Biomedicine Laboratory (MBL), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, and Aptamer Engineering Center of Hunan Province, Hunan University, Changsha 410082, P. R. China
- Institute of Molecular Medicine (IMM), Renji Hospital, Shanghai Jiao Tong University School of Medicine, and College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
- The Cancer Hospital of the University of Chinese Academy of Sciences, Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang 310022, China
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12
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Yoon S, Kim M, Min HK, Lee YU, Kwon DH, Lee M, Lee S, Kook T, Joung H, Nam KI, Ahn Y, Kim YK, Kim J, Park WJ, McMullen JR, Eom GH, Kook H. Inhibition of heat shock protein 70 blocks the development of cardiac hypertrophy by modulating the phosphorylation of histone deacetylase 2. Cardiovasc Res 2020; 115:1850-1860. [PMID: 30596969 DOI: 10.1093/cvr/cvy317] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/22/2018] [Accepted: 12/21/2018] [Indexed: 11/14/2022] Open
Abstract
AIMS Previously, we reported that phosphorylation of histone deacetylase 2 (HDAC2) and the resulting activation causes cardiac hypertrophy. Through further study of the specific binding partners of phosphorylated HDAC2 and their mechanism of regulation, we can better understand how cardiac hypertrophy develops. Thus, in the present study, we aimed to elucidate the function of one such binding partner, heat shock protein 70 (HSP70). METHODS AND RESULTS Primary cultures of rat neonatal ventricular cardiomyocytes and H9c2 cardiomyoblasts were used for in vitro cellular experiments. HSP70 knockout (KO) mice and transgenic (Tg) mice that overexpress HSP70 in the heart were used for in vivo analysis. Peptide-precipitation and immunoprecipitation assay revealed that HSP70 preferentially binds to phosphorylated HDAC2 S394. Forced expression of HSP70 increased phosphorylation of HDAC2 S394 and its activation, but not that of S422/424, whereas knocking down of HSP70 reduced it. However, HSP70 failed to phosphorylate HDAC2 in the cell-free condition. Phosphorylation of HDAC2 S394 by casein kinase 2α1 enhanced the binding of HSP70 to HDAC2, whereas dephosphorylation induced by the catalytic subunit of protein phosphatase 2A (PP2CA) had the opposite effect. HSP70 prevented HDAC2 dephosphorylation by reducing the binding of HDAC2 to PP2CA. HSP70 KO mouse hearts failed to phosphorylate S394 HDAC2 in response to isoproterenol infusion, whereas Tg overexpression of HSP70 increased the phosphorylation and activation of HDAC2. 2-Phenylethynesulfonamide (PES), an HSP70 inhibitor, attenuated cardiac hypertrophy induced either by phenylephrine in neonatal ventricular cardiomyocytes or by aortic banding in mice. PES reduced HDAC2 S394 phosphorylation and its activation by interfering with the binding of HSP70 to HDAC2. CONCLUSION These results demonstrate that HSP70 specifically binds to S394-phosphorylated HDAC2 and maintains its phosphorylation status, which results in HDAC2 activation and the development of cardiac hypertrophy. Inhibition of HSP70 has possible application as a therapeutic.
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MESH Headings
- Animals
- Binding Sites
- Cell Line
- Disease Models, Animal
- Enzyme Activation
- HSP70 Heat-Shock Proteins/antagonists & inhibitors
- HSP70 Heat-Shock Proteins/deficiency
- HSP70 Heat-Shock Proteins/genetics
- HSP70 Heat-Shock Proteins/metabolism
- Histone Deacetylase 2/metabolism
- Hypertrophy, Left Ventricular/enzymology
- Hypertrophy, Left Ventricular/genetics
- Hypertrophy, Left Ventricular/physiopathology
- Hypertrophy, Left Ventricular/prevention & control
- Mice, Inbred C57BL
- Mice, Knockout
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/enzymology
- Myocytes, Cardiac/pathology
- Phosphorylation
- Protein Binding
- Protein Phosphatase 2/metabolism
- Rats
- Rats, Sprague-Dawley
- Signal Transduction
- Sulfonamides/pharmacology
- Ventricular Function, Left/drug effects
- Ventricular Remodeling/drug effects
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Affiliation(s)
- Somy Yoon
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Republic of Korea
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, Republic of Korea
| | - Mira Kim
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Republic of Korea
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, Republic of Korea
| | - Hyun-Ki Min
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Republic of Korea
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, Republic of Korea
| | - Yeong-Un Lee
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Republic of Korea
- Cardiac Remodeling Research Center, Chonnam National University Medical School, Hwasun, Republic of Korea
| | - Duk-Hwa Kwon
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Republic of Korea
- Cardiac Remodeling Research Center, Chonnam National University Medical School, Hwasun, Republic of Korea
| | - Miyoung Lee
- Cardiac Remodeling Research Center, Chonnam National University Medical School, Hwasun, Republic of Korea
- College of Life Science, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Sumin Lee
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Republic of Korea
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, Republic of Korea
| | - Taewon Kook
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Republic of Korea
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, Republic of Korea
| | - Hosouk Joung
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Republic of Korea
- Cardiac Remodeling Research Center, Chonnam National University Medical School, Hwasun, Republic of Korea
| | - Kwang-Il Nam
- Department of Anatomy, Chonnam National University Medical School, Hwasun, Republic of Korea
| | - Youngkeun Ahn
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Young-Kook Kim
- Cardiac Remodeling Research Center, Chonnam National University Medical School, Hwasun, Republic of Korea
- Department of Biochemistry, Chonnam National University Medical School, Hwasun, Republic of Korea
| | - Jaetaek Kim
- Cardiac Remodeling Research Center, Chonnam National University Medical School, Hwasun, Republic of Korea
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Woo Jin Park
- Cardiac Remodeling Research Center, Chonnam National University Medical School, Hwasun, Republic of Korea
- College of Life Science, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Julie R McMullen
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Gwang Hyeon Eom
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Republic of Korea
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, Republic of Korea
| | - Hyun Kook
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Republic of Korea
- Cardiac Remodeling Research Center, Chonnam National University Medical School, Hwasun, Republic of Korea
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13
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Li T, Liu Q, Chen H, Li J. Antibacterial activity and mechanism of the cell-penetrating peptide CF-14 on the gram-negative bacteria, Escherichia coli. Fish Shellfish Immunol 2020; 100:489-495. [PMID: 32205189 DOI: 10.1016/j.fsi.2020.03.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 03/14/2020] [Accepted: 03/18/2020] [Indexed: 06/10/2023]
Abstract
In the present study, we characterized CF-14, a novel antimicrobial peptide derived from the catfish skin mucus. The objective of this study was to explore the antimicrobial mechanism of CF-14 against Escherichia coli. The agar-diffusion assay and the microdilution method were used to evaluate the antimicrobial activity and the minimum inhibitory concentration (MIC) of CF-14 against E. coli, respectively. In addition, the absorbance of the bacterial suspension filtrate at 260 nm was measured to quantify the leakage of bacterial cytoplasmic components. The bacterial morphological changes were observed by scanning electron microscopy, while confocal microscopy was used to investigate the localization site of CF-14 in E.coli. The DNA binding ability of CF-14 was evaluated using gel retardation assay and the binding of CF-14 to DnaK was evaluated using Discovery Studio. The results demonstrated that CF-14 exhibited strong antimicrobial activity against E.coli with an MIC of 31.3 μg/mL. Unlike common cationic anti-microbial peptides (AMPs) that target the cellmembrane, CF-14 penetrated the E.coli cell membrane and induced only minormembrane perturbations. Furthermore, the antimicrobial mechanism of CF-14 against E.coli involved DNA binding and competitive inhibition of bacterial DnaK. Finally, by deleting or replacing the amino acid sequence, the antibacterial activity of CF-14 was affected, which helped the optimization of amino acid sequence. Therefore, CF-14 can be a potential antimicrobial peptide.
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Affiliation(s)
- Tingting Li
- Key Laboratory of Biotechnology and Bioresources Utilization (Dalian Minzu University), Ministry of Education, Dalian, Liaoning, 116029, China.
| | - Quanwei Liu
- College of Food Science and Technology, Bohai University, Jinzhou, Liaoning, 121013, China; National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Bohai University, Jinzhou, Liaoning, 121013, China.
| | - Haitao Chen
- Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University (BTBU), Beijing, 100048, China.
| | - Jianrong Li
- College of Food Science and Technology, Bohai University, Jinzhou, Liaoning, 121013, China; National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Bohai University, Jinzhou, Liaoning, 121013, China.
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14
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Huang L, Wang Y, Bai J, Yang Y, Wang F, Feng Y, Zhang R, Li F, Zhang P, Lv N, Lei L, Hu J, He A. Blockade of HSP70 by VER-155008 synergistically enhances bortezomib-induced cytotoxicity in multiple myeloma. Cell Stress Chaperones 2020; 25:357-367. [PMID: 32026316 PMCID: PMC7058745 DOI: 10.1007/s12192-020-01078-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 01/27/2020] [Accepted: 01/29/2020] [Indexed: 02/07/2023] Open
Abstract
Proteasome inhibitor bortezomib is one of the most effective drugs currently available for the treatment of multiple myeloma (MM). However, the intrinsic and acquired resistance to bortezomib can limit its effectiveness. The activation of heat shock response has been characterized as a potential resistance mechanism protecting MM cells from bortezomib-induced cell death. In this study, in response to bortezomib therapy, we discovered that HSP70 is one of the most substantially upregulated heat shock proteins. In order to further explore approaches to sensitizing bortezomib-based treatment for MM, we investigated whether targeting HSP70 using a specific inhibitor VER-155008 combined with bortezomib could overcome the acquired resistance in MM. We found that HSP70 inhibitor VER-155008 alone significantly decreased MM cell viability. Moreover, the combination of VER-155008 and bortezomib synergistically induced MM cell apoptosis markedly in vitro. Notably, the combined treatment was found to increase the cleavage of PARP, an early marker of chemotherapy-induced apoptosis. Importantly, the reduction of anti-apoptotic Bcl-2 family member Bcl-2, Bcl-xL, and Mcl-1 and the induction of pro-apoptotic Bcl-2 family member BH3-only protein NOXA and Bim were confirmed to be tightly associated with the synergism. Finally, the ER stress marker CHOP (CCAAT-enhancer binding protein homologous protein), which can cause transcriptional activation of genes involved in cell apoptosis, was markedly induced by both VER-155008 and bortezomib. Taken together, our finding of a strong synergistic interaction between VER-155008 and bortezomib may support for combination therapy in MM patients in the future.
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Affiliation(s)
- Lingjuan Huang
- Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Department of General Medicine, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi, China
- School of General Medicine Xi'an Medical University, Xi'an, Shaanxi, China
| | - Yanmeng Wang
- Department of Cell Biology and Genetics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Ju Bai
- Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yun Yang
- Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Fangxia Wang
- Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yuandong Feng
- Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Ru Zhang
- Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Fangmei Li
- Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Peihua Zhang
- Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Nan Lv
- Department of Cell Biology and Genetics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Lei Lei
- Department of Cell Biology and Genetics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Jinsong Hu
- Department of Cell Biology and Genetics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China.
- Key Laboratory of Environment and Genes Related to Diseases, (Xi'an Jiaotong University), Ministry of Education, Xi'an, Shaanxi, China.
| | - Aili He
- Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
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15
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Rowarth NM, Dauphinee AN, Denbigh GL, Gunawardena AH. Hsp70 plays a role in programmed cell death during the remodelling of leaves of the lace plant (Aponogeton madagascariensis). J Exp Bot 2020; 71:907-918. [PMID: 31691798 DOI: 10.1093/jxb/erz447] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 09/23/2019] [Indexed: 05/07/2023]
Abstract
Lace plant leaves utilize programmed cell death (PCD) to form perforations during development. The role of heat shock proteins (Hsps) in PCD during lace plant leaf development is currently unknown. Hsp70 amounts were measured throughout lace plant leaf development, and the results indicate that it is highest before and during PCD. Increased Hsp70 amounts correlate with raised anthocyanin content and caspase-like protease (CLP) activity. To investigate the effects of Hsp70 on leaf development, whole plants were treated with either of the known regulators of PCD [reactive oxygen species (ROS) or antioxidants] or an Hsp70 inhibitor, chlorophenylethynylsulfonamide (PES-Cl). ROS treatment significantly increased Hsp70 2-fold and CLP activity in early developing leaves, but no change in anthocyanin and the number of perforations formed was observed. Antioxidant treatment significantly decreased Hsp70, anthocyanin, and CLP activity in early leaves, resulting in the fewest perforations. PES-Cl (25 μM) treatment significantly increased Hsp70 4-fold in early leaves, while anthocyanin, superoxide, and CLP activity significantly declined, leading to fewer perforations. Results show that significantly increased (4-fold) or decreased Hsp70 amounts lead to lower anthocyanin and CLP activity, inhibiting PCD induction. Our data support the hypothesis that Hsp70 plays a role in regulating PCD at a threshold in lace plant leaf development. Hsp70 affects anthocyanin content and caspase-like protease activity, and helps regulate PCD during the remodelling of leaves of lace plant, Aponogeton madagascariensis.
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Affiliation(s)
- Nathan M Rowarth
- Department of Biology, Dalhousie University, Halifax, NS, Canada
| | - Adrian N Dauphinee
- Department of Molecular Sciences, Uppsala BioCenter, Linnean Centre for Plant Biology, Swedish University of Agricultural Sciences, Uppsala, SE, Sweden
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Gorska-Ponikowska M, Kuban-Jankowska A, Marino Gammazza A, Daca A, Wierzbicka JM, Zmijewski MA, Luu HH, Wozniak M, Cappello F. The Major Heat Shock Proteins, Hsp70 and Hsp90, in 2-Methoxyestradiol-Mediated Osteosarcoma Cell Death Model. Int J Mol Sci 2020; 21:E616. [PMID: 31963524 PMCID: PMC7014403 DOI: 10.3390/ijms21020616] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/27/2019] [Accepted: 01/14/2020] [Indexed: 01/11/2023] Open
Abstract
2-Methoxyestradiol is one of the natural 17β-estradiol derivatives and a potential novel anticancer agent currently being under evaluation in advanced phases of clinical trials. However, the mechanism of anticancer action of 2-methoxyestradiol has not been yet fully established. In our previous studies we have demonstrated that 2-methoxyestradiol selectively induces the expression and nuclear translocation of neuronal nitric oxide synthase in osteosarcoma 143B cells. Heat shock proteins (Hsps) are factors involved in the regulation of expression and activity of nitric oxide synthases. Herein, we chose osteosarcoma cell lines differed in metastatic potential, metastatic 143B and highly metastatic MG63.2 cells, in order to further investigate the anticancer mechanism of 2-methoxyestradiol. The current study aimed to determine the role of major heat shock proteins, Hsp90 and Hsp70 in 2-methoxyestradiol-induced osteosarcoma cell death. We focused on the implication of Hsp90 and Hsp70 in control under expression of neuronal nitric oxide synthase, localization of the enzyme, and further generation of nitro-oxidative stress. To give the insight into the role of Hsp90 in regulation of anticancer efficacy of 2-methoxyestradiol, we used geldanamycin as a potent Hsp90 inhibitor. Herein, we evidenced that inhibition of Hsp90 controls the protein expression of 2-methoxyestradiol-induced neuronal nitric oxide synthase and inhibits enzyme nuclear translocation. We propose that decreased level of neuronal nitric oxide synthase protein after a combined treatment with 2-methoxyestradiol and geldanamycin is directly associated with the accompanying upregulation of Hsp70 and downregulation of Hsp90. This interaction resulted in abrogation of anticancer efficacy of 2-methoxyestradiol by geldanamycin.
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Affiliation(s)
| | - Alicja Kuban-Jankowska
- Department of Medical Chemistry, Medical University of Gdansk, 80-211 Gdansk, Poland; (A.K.-J.); (M.W.)
| | - Antonella Marino Gammazza
- Euro-Mediterranean Institute of Science and Technology, 90127 Palermo, Italy; (A.M.G.); (F.C.)
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BiND), University of Palermo, 90127 Palermo, Italy
| | - Agnieszka Daca
- Department of Pathology and Experimental Rheumatology, Medical University of Gdansk, 80-211 Gdansk, Poland;
| | - Justyna M. Wierzbicka
- Department of Histology, Medical University of Gdansk, 80-211 Gdansk, Poland; (J.M.W.); (M.A.Z.)
| | - Michal A. Zmijewski
- Department of Histology, Medical University of Gdansk, 80-211 Gdansk, Poland; (J.M.W.); (M.A.Z.)
| | - Hue H. Luu
- Department of Orthopaedic Surgery and Rehabilitation Medicine, University of Chicago, Chicago, IL 60637, USA;
| | - Michal Wozniak
- Department of Medical Chemistry, Medical University of Gdansk, 80-211 Gdansk, Poland; (A.K.-J.); (M.W.)
| | - Francesco Cappello
- Euro-Mediterranean Institute of Science and Technology, 90127 Palermo, Italy; (A.M.G.); (F.C.)
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BiND), University of Palermo, 90127 Palermo, Italy
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17
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Jahangirizadeh Z, Ghafouri H, Sajedi RH, Sariri R, Hossienkhani S. Rapid and simple screening of the apoptotic compounds based on Hsp70 inhibition using luciferase as an intracellular reporter. Anal Bioanal Chem 2020; 412:149-158. [PMID: 31897564 DOI: 10.1007/s00216-019-02220-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 09/08/2019] [Accepted: 10/16/2019] [Indexed: 11/26/2022]
Abstract
HSP70 is a powerful antiapoptotic protein that can block the extrinsic and intrinsic pathways of apoptosis. The present study describes a rapid, sensitive, and inexpensive system using luciferase as a reporter for the functional analysis of apoptotic compounds. For this approach, the co-transformation of Escherichia coli cells was performed with two expression vectors containing Hsp70 and firefly luciferase. It was found that the luciferase inactivated by heat treatment (40-46 °C for 10 min) was approximately reactivated at room temperature and regained 70% of its initial activity before heat inactivation after 60 min. The results show that the reactivation of thermally inactivated luciferase was inhibited in living cells by treatment with VER-155008 and pifitrin-μ as Hsp70 inhibitors, with half-maximal inhibitory concentration of 124 and 384 μM, respectively. The sensitivity of this method for detecting VER-155008 and pifitrin-μ was about 8 and 25 μM, respectively. Also, this reporter system showed no response to doxorubicin and dactinomycin, which bind to DNA, and we used these anticancer compounds as control compounds. Therefore, for the first time, a rapid and simple real-time system using luciferase as a reporter is introduced for the screening of apoptosis-inducing compounds based on suppression of Hsp70 in E. coli cells.
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Affiliation(s)
- Zohreh Jahangirizadeh
- Department of Biology, Faculty of Science, University of Guilan, P.O. Box 41335-1914, Rasht, Iran
| | - Hossein Ghafouri
- Department of Biology, Faculty of Science, University of Guilan, P.O. Box 41335-1914, Rasht, Iran.
| | - Reza H Sajedi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, P.O. Box 14115-154, Tehran, Iran
| | - Reyhaneh Sariri
- Department of Biology, Faculty of Science, University of Guilan, P.O. Box 41335-1914, Rasht, Iran
| | - Saman Hossienkhani
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, P.O. Box 14115-154, Tehran, Iran
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Abstract
This personal perspective focuses on small-molecule inhibitors of proteostasis networks in cancer-specifically the discovery and development of chemical probes and drugs acting on the molecular chaperones HSP90 and HSP70, and on the HSF1 stress pathway. Emphasis is on progress made and lessons learned and a future outlook is provided. Highly potent, selective HSP90 inhibitors have proved invaluable in exploring the role of this molecular chaperone family in biology and disease pathology. Clinical activity was observed, especially in non small cell lung cancer and HER2 positive breast cancer. Optimal use of HSP90 inhibitors in oncology will likely require development of creative combination strategies. HSP70 family members have proved technically harder to drug. However, recent progress has been made towards useful chemical tool compounds and these may signpost future clinical drug candidates. The HSF1 stress pathway is strongly validated as a target for cancer therapy. HSF1 itself is a ligandless transcription factor that is extremely challenging to drug directly. HSF1 pathway inhibitors have been identified mostly by phenotypic screening, including a series of bisamides from which a clinical candidate has been identified for treatment of ovarian cancer, multiple myeloma and potentially other cancers.
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Affiliation(s)
- Paul Workman
- CRUK Cancer Therapeutics Unit, The Institute of Cancer Research, London, UK.
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19
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Elmallah MIY, Cordonnier M, Vautrot V, Chanteloup G, Garrido C, Gobbo J. Membrane-anchored heat-shock protein 70 (Hsp70) in cancer. Cancer Lett 2019; 469:134-141. [PMID: 31669516 DOI: 10.1016/j.canlet.2019.10.037] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/18/2019] [Accepted: 10/22/2019] [Indexed: 12/19/2022]
Abstract
Hsp70 is a highly conserved and inducible heat shock protein that belongs to the HSP70 family of molecular chaperones and plays a central role in protein homeostasis. The main function of Hsp70 is to protect cells from physiological, pathological and environmental insults, as it assists an ATP-dependent manner the process of protein folding. Since Hsp70 provides critical cell survival functions, cancer cells are assumed to rely on this chaperone. Strong evidence suggests that Hsp70 is upregulated in different type of cancers and is involved in tumor growth, invasion, migration and resistance to anti-cancer therapy. Interestingly, this Hsp70 upregulation induces Hsp70 re-location into plasma membrane. In this review, the role of Hsp70 in cancer will be discussed focusing particularly on the extracellular membrane-bound Hsp70. The mechanism by which Hsp70 is translocated to plasma membrane of tumor cells and the recent discoveries of drugs targeting this Hsp70 in cancer therapy will be also highlighted.
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Affiliation(s)
- Mohammed I Y Elmallah
- INSERM 1231, Label Ligue National contre le Cancer and Label d'excellence LipSTIC, 7 Bd Jeanne d'Arc, 21000, Dijon, France; Anti-cancer Center Georges-François Leclerc, Dijon, France; Chemistry Department, Faculty of Science, Helwan University, 11795, Ain Helwan, Cairo, Egypt.
| | - Marine Cordonnier
- INSERM 1231, Label Ligue National contre le Cancer and Label d'excellence LipSTIC, 7 Bd Jeanne d'Arc, 21000, Dijon, France; Faculty of Medicine. University of Burgundy-Franche-Comté, France
| | - Valentin Vautrot
- INSERM 1231, Label Ligue National contre le Cancer and Label d'excellence LipSTIC, 7 Bd Jeanne d'Arc, 21000, Dijon, France; Anti-cancer Center Georges-François Leclerc, Dijon, France; University of Bourgogne Franche-Comté, EA 3181, France
| | - Gaëtan Chanteloup
- INSERM 1231, Label Ligue National contre le Cancer and Label d'excellence LipSTIC, 7 Bd Jeanne d'Arc, 21000, Dijon, France; Faculty of Medicine. University of Burgundy-Franche-Comté, France
| | - Carmen Garrido
- INSERM 1231, Label Ligue National contre le Cancer and Label d'excellence LipSTIC, 7 Bd Jeanne d'Arc, 21000, Dijon, France; Anti-cancer Center Georges-François Leclerc, Dijon, France; Faculty of Medicine. University of Burgundy-Franche-Comté, France.
| | - Jessica Gobbo
- INSERM 1231, Label Ligue National contre le Cancer and Label d'excellence LipSTIC, 7 Bd Jeanne d'Arc, 21000, Dijon, France; Anti-cancer Center Georges-François Leclerc, Dijon, France
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20
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Rinaldi L, Delle Donne R, Catalanotti B, Torres-Quesada O, Enzler F, Moraca F, Nisticò R, Chiuso F, Piccinin S, Bachmann V, Lindner HH, Garbi C, Scorziello A, Russo NA, Synofzik M, Stelzl U, Annunziato L, Stefan E, Feliciello A. Feedback inhibition of cAMP effector signaling by a chaperone-assisted ubiquitin system. Nat Commun 2019; 10:2572. [PMID: 31189917 PMCID: PMC6561907 DOI: 10.1038/s41467-019-10037-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 04/12/2019] [Indexed: 02/07/2023] Open
Abstract
Activation of G-protein coupled receptors elevates cAMP levels promoting dissociation of protein kinase A (PKA) holoenzymes and release of catalytic subunits (PKAc). This results in PKAc-mediated phosphorylation of compartmentalized substrates that control central aspects of cell physiology. The mechanism of PKAc activation and signaling have been largely characterized. However, the modes of PKAc inactivation by regulated proteolysis were unknown. Here, we identify a regulatory mechanism that precisely tunes PKAc stability and downstream signaling. Following agonist stimulation, the recruitment of the chaperone-bound E3 ligase CHIP promotes ubiquitylation and proteolysis of PKAc, thus attenuating cAMP signaling. Genetic inactivation of CHIP or pharmacological inhibition of HSP70 enhances PKAc signaling and sustains hippocampal long-term potentiation. Interestingly, primary fibroblasts from autosomal recessive spinocerebellar ataxia 16 (SCAR16) patients carrying germline inactivating mutations of CHIP show a dramatic dysregulation of PKA signaling. This suggests the existence of a negative feedback mechanism for restricting hormonally controlled PKA activities.
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Affiliation(s)
- Laura Rinaldi
- Department of Molecular Medicine and Medical Biotechnologies, University Federico II, 80131, Naples, Italy
| | - Rossella Delle Donne
- Department of Molecular Medicine and Medical Biotechnologies, University Federico II, 80131, Naples, Italy
| | - Bruno Catalanotti
- Department of Pharmacy, University Federico II, 80131, Naples, Italy
| | - Omar Torres-Quesada
- Institute of Biochemistry and Center for Molecular Biosciences, University of Innsbruck, A-6020, Innsbruck, Austria
| | - Florian Enzler
- Institute of Biochemistry and Center for Molecular Biosciences, University of Innsbruck, A-6020, Innsbruck, Austria
| | - Federica Moraca
- Department of Chemical Sciences, University Federico II, 80131, Naples, Italy
| | - Robert Nisticò
- European Brain Research Institute, Rita Levi-Montalcini Foundation and Department of Biology, University Tor Vergata, 00143, Rome, Italy
| | - Francesco Chiuso
- Department of Molecular Medicine and Medical Biotechnologies, University Federico II, 80131, Naples, Italy
| | - Sonia Piccinin
- European Brain Research Institute, Rita Levi-Montalcini Foundation and Department of Biology, University Tor Vergata, 00143, Rome, Italy
| | - Verena Bachmann
- Institute of Biochemistry and Center for Molecular Biosciences, University of Innsbruck, A-6020, Innsbruck, Austria
| | - Herbert H Lindner
- Division of Clinical Biochemistry, Biocenter Medical University of Innsbruck, Innrain 80-82, A-6020, Innsbruck, Austria
| | - Corrado Garbi
- Department of Molecular Medicine and Medical Biotechnologies, University Federico II, 80131, Naples, Italy
| | - Antonella Scorziello
- Department of Neuroscience, Reproductive and Odontostomatological Sciences, University Federico II, 80131, Naples, Italy
| | | | - Matthis Synofzik
- Department of Neurodegeneration, Hertie Institute for Clinical Brain Research (HIH), University of Tübingen and German Center for Neurodegenerative Diseases (DZNE), 72076, Tübingen, Germany
| | - Ulrich Stelzl
- Institute of Pharmaceutical Sciences, University of Graz and BioTechMed-Graz, 8010, Graz, Austria
| | | | - Eduard Stefan
- Institute of Biochemistry and Center for Molecular Biosciences, University of Innsbruck, A-6020, Innsbruck, Austria
| | - Antonio Feliciello
- Department of Molecular Medicine and Medical Biotechnologies, University Federico II, 80131, Naples, Italy.
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Nytko KJ, Thumser-Henner P, Weyland MS, Scheidegger S, Bley CR. Cell line-specific efficacy of thermoradiotherapy in human and canine cancer cells in vitro. PLoS One 2019; 14:e0216744. [PMID: 31091255 PMCID: PMC6519812 DOI: 10.1371/journal.pone.0216744] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 04/27/2019] [Indexed: 12/17/2022] Open
Abstract
Objective Aims were to investigate sensitivity of various human and canine cancer cell lines to hyperthermia and the influence of particular treatment conditions, and to analyze the DNA-damage response and mode of cell death in cell line radiosensitized by hyperthermia. Additionally, we were interested in the involvement of HSP70 in radiosensitization. Methods Radiosensitization by hyperthermia was determined in a panel of human and canine cancer cell lines using clonogenic cell survival assay, as well as levels of heat shock proteins (HSPs) using immunoblotting. The influence of the hyperthermia-radiotherapy time gap, different temperatures and the order of treatments on clonogenicity of hyperthermia-sensitive A549 cells was investigated. Additionally, DNA damage and cell death were assessed by Comet assay and an apoptosis/necrosis assay. Further we induced transient knockdown in A549 cells to test HSP70’s involvement in radiosensitization. Results Out of eight cell lines tested, only two (A549 and Abrams) showed significant decrease in clonogenic cell survival when pre-treated with hyperthermia at 42°C. Strong induction of HSP70 upon thermoradiotherapy (HT-RT) treatment was found in all cell lines. Transient knockdown of HSP70 in A549 cells did not result in decrease of clonogenic cell survival in response to HT-RT. Conclusion Tumor cell-type, temperature and order of treatment play an important role in radiosensitization by hyperthermia. However, hyperthermia has limited potency to radiosensitize canine cancer cells grown in a 2D cell culture setting presented here. DNA damage and apoptosis/necrosis did not increase upon combined treatment and cytosolic levels of HSP70 appear not to play critical role in the radiosensitization of A549 cells.
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Affiliation(s)
- Katarzyna J. Nytko
- Division of Radiation Oncology, Vetsuisse Faculty University of Zurich, Zurich, Switzerland
- Center for Applied Biotechnology and Molecular Medicine, University of Zurich Zurich, Switzerland
- Center for Clinical Studies at the Vetsuisse Faculty of the University of Zurich, Zurich, Switzerland
- * E-mail:
| | - Pauline Thumser-Henner
- Division of Radiation Oncology, Vetsuisse Faculty University of Zurich, Zurich, Switzerland
- Center for Applied Biotechnology and Molecular Medicine, University of Zurich Zurich, Switzerland
- Center for Clinical Studies at the Vetsuisse Faculty of the University of Zurich, Zurich, Switzerland
| | - Mathias S. Weyland
- ZHAW School of Engineering, Zurich University of Applied Sciences, Winterthur, Switzerland
- BioNanomaterials Group, Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland
| | - Stephan Scheidegger
- ZHAW School of Engineering, Zurich University of Applied Sciences, Winterthur, Switzerland
| | - Carla Rohrer Bley
- Division of Radiation Oncology, Vetsuisse Faculty University of Zurich, Zurich, Switzerland
- Center for Applied Biotechnology and Molecular Medicine, University of Zurich Zurich, Switzerland
- Center for Clinical Studies at the Vetsuisse Faculty of the University of Zurich, Zurich, Switzerland
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22
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Sanchala D, Bhatt LK, Pethe P, Shelat R, Kulkarni YA. Anticancer activity of methylene blue via inhibition of heat shock protein 70. Biomed Pharmacother 2018; 107:1037-1045. [PMID: 30257315 DOI: 10.1016/j.biopha.2018.08.095] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/07/2018] [Accepted: 08/17/2018] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Heat shock protein 70 (Hsp70) and heat shock protein 90 (Hsp90) chaperones are indispensable to lung cancer cells for their survival and proliferation. In this study we evaluated and compared anticancer potential of methylene blue (MB) as an Hsp70 inhibitor, novobiocin (NB) a well-known Hsp90 inhibitor and their combination. METHODS In vitro evaluation was done by cell viability assays, fluorescent staining, and flow cytometry analysis using A549 non-small cell lung cancer cells. In vivo anticancer activity was investigated by evaluating oxidative stress, tumor biomarkers, weight, lung microarchitecture, and Hsp70 and Hsp90 inhibitions via immunoblotting in benzo[a]pyrene induced lung carcinogenesis mice model. RESULTS Using A549 NSCLC cells, we found MB demonstrated lower cell viability versus NB. Together, MB + NB resulted in further decrease in cell viability. SRB assay revealed significantly superior and similar potency for MB versus NB and MB + NB (1:1) versus MB, respectively. Fluorescent staining and flow cytometry analysis displayed early apoptosis by MB (11.4%); early and late apoptosis by MB + NB (13.8%). In vivo, MB significantly inhibited Hsp70. Furthermore, MB significantly alleviated tumor biomarkers (ADA and LDH) and improved lung histopathological features more than NB. Additionally, MB significantly improved SOD, not more than MB + NB or NB and improved LPO. CONCLUSION MB demonstrated potent anticancer activity in vitro and in vivo via inhibition of Hsp70 in benzo[a]pyrene induced lung carcinogenesis in mice.
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Affiliation(s)
- Dhaval Sanchala
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai 400 056, Maharashtra, India
| | - Lokesh Kumar Bhatt
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai 400 056, Maharashtra, India.
| | - Prasad Pethe
- Department of Biological Sciences, Sunandan Divatia School of Science, SVKM's NMIMS, Mumbai 400 056, India
| | - Ruchita Shelat
- Department of Biological Sciences, Sunandan Divatia School of Science, SVKM's NMIMS, Mumbai 400 056, India
| | - Yogesh A Kulkarni
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM's NMIMS, V.L.Mehta road, Vile Parle (W), Mumbai 400 056, India
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Chen Y, Liu X, Jiang C, Liu L, Ordovas JM, Lai CQ, Shen L. Curcumin supplementation increases survival and lifespan in Drosophila under heat stress conditions. Biofactors 2018; 44:577-587. [PMID: 30488487 DOI: 10.1002/biof.1454] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 08/08/2018] [Accepted: 08/15/2018] [Indexed: 11/07/2022]
Abstract
Harsh climate induces physiological stress thus compromising organismal survival. Our previous studies demonstrated that curcumin (CUR) supplementation increased survival of turtle under heat stress (HS). Here, we span this work to investigate the survival and lifespan of HS Drosophila fed a diet supplemented with CUR. For this purpose, female and male flies were fed basal diet (N) and CUR diet (0.2 mg/g), and exposed to three conditions: 25°C and 29°C continuously, and 34 °C for 2 h at days 1, 4, and 7, then kept at 25 °C. Lifespan analysis showed that, compared to N-25 °C flies, the mean lifespans of N-29 °C and N-34 °C flies were decreased significantly by 8.5-15.7% in males, and 3.7-7.9% in females. Conversely, in the CUR-supplemented diet, mean lifespans of C-29 °C and C-34 °C flies were significantly extended by 8.7-16.4% in males, and by 8.9-12.8% in females, compared to that of temperature-matched flies fed basal diets. The MDA levels of C-34 °C flies were significantly lower than those of N-34 °C flies, indicating CUR reduced oxidative stress caused by HS. Furthermore, CUR palliated the increased oxidative stress caused by HS, by increasing the expression of SOD1, CAT, and PHGPx and decreasing the expression of Hsp70 and Hsp83. Our results indicated that CUR supplementation increases the survival rate of Drosophila by enhancing thermal tolerance. © 2018 BioFactors, 44(6):577-587, 2018.
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Affiliation(s)
- Yong Chen
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
| | - Xin Liu
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
| | - Chenmin Jiang
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
| | - Liang Liu
- Department of Statistics, The University of Georgia, Athens, GA, USA
| | - Jose M Ordovas
- Nutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
- IMDEA Alimentacion, Madrid, Spain
| | - Chao-Qiang Lai
- USDA ARS, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Lirong Shen
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
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24
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Kim M, Min YS, Sohn UD. Cytoprotective effect of eupatilin against indomethacin-induced damage in feline esophageal epithelial cells: relevance of HSP27 and HSP70. Arch Pharm Res 2018; 41:1019-1031. [PMID: 30109575 DOI: 10.1007/s12272-018-1066-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 08/10/2018] [Indexed: 12/28/2022]
Abstract
Indomethacin is a non-steroidal anti-inflammatory drug with clearly known side effects on the gastrointestinal tract. The purpose of the present study was to investigate whether eupatilin inhibit cell injury induced by indomethacin in cultured feline esophageal epithelial cells (EECs). EECs were used to investigate the ability of eupatilin to induce the expression of heat shock proteins (HSP27 and HSP70) and analyze its cytoprotective effect against indomethacin-induced damage. The treatment of EECs with indomethacin for 8 h decreased cell viability. Western blot analysis showed that the levels of HSPs gradually decreased in cells treated with indomethacin, while eupatilin treatment increased the levels of HSPs. When treated with both indomethacin and eupatilin, the levels of HSPs increased rapidly, and were maintained at 130-140%. In addition, treatment with the specific inhibitors of PTK, PKC, PLC, p38 MAPK, JNKs, and PI3K attenuated the eupatilin-induced expression of HSPs. Pretreatment of EECs with the inhibitors of protein synthesis, actinomycin D or cycloheximide, attenuated the cytoprotective effect of eupatilin on indomethacin-induced cell damage. Reactive oxygen species production was upregulated by indomethacin, but downregulated by eupatilin. Taken together, it was suggested that HSPs were partly responsible for the eupatilin-mediated cytoprotective activity against the indomethacin-induced damage in EECs.
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Affiliation(s)
- Mina Kim
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, 06911, Republic of Korea
| | - Young Sil Min
- Department of Pharmaceutical Engineering, College of Convergence Science and Technology, Jung Won University, Goesan, Chungcheongbuk-do, 28054, Republic of Korea
| | - Uy Dong Sohn
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, 06911, Republic of Korea.
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Woo SJ, Kim NY, Kim SH, Ahn SJ, Seo JS, Jung SH, Cho MY, Chung JK. Toxicological effects of trichlorfon on hematological and biochemical parameters in Cyprinus carpio L. following thermal stress. Comp Biochem Physiol C Toxicol Pharmacol 2018. [PMID: 29530824 DOI: 10.1016/j.cbpc.2018.03.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Trichlorfon is a moderately toxic organophosphate pesticide that is widely used in aquaculture. This study investigated the effects of trichlorfon on hematological parameters, biochemical factors, and stress reaction in Cyprinus carpio L. The fish were exposed to acute concentrations of trichlorfon (0, 0.5, 1.0, 2.0, and 4.0 mg L-1) at 25 °C and 15 °C for 1 and 2 weeks, after which several parameters were evaluated to assess the effects of the pesticide. Significant decreases were observed in red blood cell (RBC) Count, hemoglobin (Hb) level, hematocrit (Ht), and plasma protein levels after each exposure period. In contrast, notable increases in mean corpuscular volume (MCV), mean cell hemoglobin (MCH), calcium, and glucose levels were observed in the trichlorfon-treated groups. Additionally, there were significant increases in the plasma levels of glutamate-oxaloacetate transaminase (GOT), glutamate-pyruvate transaminase (GPT), and alkaline phosphatase (ALP) following the exposure to trichlorfon. Furthermore, the results showed a relationship between toxic stress and increment in HSP70 and cytochrome P450 1A (CYP1A) expression over time. Ht, MCV, MCH, and the value of other biochemical parameters were quite lower at 15 °C than their corresponding values were at 25 °C, which indicated the decreased physical activity at 15 °C. The results of the present work indicate that acute exposure to trichlorfon and thermal stimulus could damage erythropoietic tissue. Additionally, hepatocytes function and physiological mechanisms could be impaired. Ht, glucose, GOT, GPT, HSP70, and CYP1A levels might be useful biomarkers of trichlorfon toxicity in contaminated aquatic ecosystems.
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Affiliation(s)
- Soo Ji Woo
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, Republic of Korea
| | - Na Young Kim
- Pathology Research Division, National Institute of Fisheries Science (NIFS), Busan 46083, Republic of Korea
| | - Shin Hu Kim
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, Republic of Korea
| | - Sang Jung Ahn
- Fisheries R&D Management Center, Korea Institute of Marine Science & Technology Promotion (KIMST), Seoul 06775, Republic of Korea
| | - Jung Soo Seo
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), Busan 46083, Republic of Korea
| | - Sung Hee Jung
- Pathology Research Division, National Institute of Fisheries Science (NIFS), Busan 46083, Republic of Korea
| | - Mi Young Cho
- Pathology Research Division, National Institute of Fisheries Science (NIFS), Busan 46083, Republic of Korea
| | - Joon Ki Chung
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, Republic of Korea.
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Sasikumar P, AlOuda KS, Kaiser WJ, Holbrook LM, Kriek N, Unsworth AJ, Bye AP, Sage T, Ushioda R, Nagata K, Farndale RW, Gibbins JM. The chaperone protein HSP47: a platelet collagen binding protein that contributes to thrombosis and hemostasis. J Thromb Haemost 2018; 16:946-959. [PMID: 29512284 PMCID: PMC6434988 DOI: 10.1111/jth.13998] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Indexed: 11/30/2022]
Abstract
Essentials Heat shock protein 47 (HSP47), a collagen specific chaperone is present on the platelet surface. Collagen mediated platelet function was reduced following blockade or deletion of HSP47. GPVI receptor regulated signalling was reduced in HSP47 deficient platelets. Platelet HSP47 tethers to exposed collagen thus modulating thrombosis and hemostasis. SUMMARY Objective Heat shock protein 47 (HSP47) is an intracellular chaperone protein that is vital for collagen biosynthesis in collagen secreting cells. This protein has also been shown to be present on the surface of platelets. Given the importance of collagen and its interactions with platelets in triggering hemostasis and thrombosis, in this study we sought to characterize the role of HSP47 in these cells. Methods and Results The deletion of HSP47 in mouse platelets or its inhibition in human platelets reduced their function in response to collagen and the GPVI agonist (CRP-XL), but responses to thrombin were unaltered. In the absence of functional HSP47, the interaction of collagen with platelets was reduced, and this was associated with reduced GPVI-collagen binding, signalling and platelet activation. Thrombus formation on collagen, under arterial flow conditions, was also decreased following the inhibition or deletion of HSP47, in the presence or absence of eptifibatide, consistent with a role for HSP47 in enhancing platelet adhesion to collagen. Platelet adhesion under flow to von Willebrand factor was unaltered following HSP47 inhibition. Laser-induced thrombosis in cremaster muscle arterioles was reduced and bleeding time was prolonged in HSP47-deficient mice or following inhibition of HSP47. Conclusions Our study demonstrates the presence of HSP47 on the platelet surface, where it interacts with collagen, stabilizes platelet adhesion and increases collagen-mediated signalling and therefore thrombus formation and hemostasis.
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Affiliation(s)
- P. Sasikumar
- Institute for Cardiovascular and Metabolic ResearchSchool of Biological SciencesUniversity of ReadingReadingUK
| | - K. S. AlOuda
- Institute for Cardiovascular and Metabolic ResearchSchool of Biological SciencesUniversity of ReadingReadingUK
| | - W. J. Kaiser
- Institute for Cardiovascular and Metabolic ResearchSchool of Biological SciencesUniversity of ReadingReadingUK
| | - L. M. Holbrook
- Institute for Cardiovascular and Metabolic ResearchSchool of Biological SciencesUniversity of ReadingReadingUK
| | - N. Kriek
- Institute for Cardiovascular and Metabolic ResearchSchool of Biological SciencesUniversity of ReadingReadingUK
| | - A. J. Unsworth
- Institute for Cardiovascular and Metabolic ResearchSchool of Biological SciencesUniversity of ReadingReadingUK
| | - A. P. Bye
- Institute for Cardiovascular and Metabolic ResearchSchool of Biological SciencesUniversity of ReadingReadingUK
| | - T. Sage
- Institute for Cardiovascular and Metabolic ResearchSchool of Biological SciencesUniversity of ReadingReadingUK
| | - R. Ushioda
- Laboratory of Molecular and Cellular BiologyFaculty of Life SciencesKyoto Sangyo UniversityKyotoJapan
| | - K. Nagata
- Laboratory of Molecular and Cellular BiologyFaculty of Life SciencesKyoto Sangyo UniversityKyotoJapan
| | - R. W. Farndale
- Department of BiochemistryUniversity of CambridgeCambridgeUK
| | - J. M. Gibbins
- Institute for Cardiovascular and Metabolic ResearchSchool of Biological SciencesUniversity of ReadingReadingUK
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Fujii K, Suzuki N, Jimura N, Idogawa M, Kondo T, Iwatsuki K, Kanekura T. HSP72 functionally inhibits the anti-neoplastic effects of HDAC inhibitors. J Dermatol Sci 2018; 90:82-89. [PMID: 29395577 DOI: 10.1016/j.jdermsci.2018.01.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 12/18/2017] [Accepted: 01/09/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND The anticancer effects of histone deacetylase inhibitors (HDACi) vary between patients, and their molecular mechanisms remain poorly understood. Previously, we have identified heat shock 70 kDa protein 1A (HSPA1A, also known as HSP72) as the most overexpressed protein in valproic acid (VPA)-resistant cell lines. KNK437, an inhibitor of heat shock proteins, enhanced the cytotoxic effects of not only VPA but also vorinostat, another HDACi. However, the mechanisms underlying the role of HSP72 in resistance against HDACi remain largely unknown. OBJECTIVE The purpose of this study was to identify the mechanisms underlying the role of HSP72 in HDACi resistance. METHODS We established an HSP72-overexpressing Jurkat cell line and used it to assess the functional role of HSP72 following treatment with the HDACi vorinostat and VPA. RESULTS HDACi-induced apoptosis, assessed using annexin V assays, sub-G1 fraction analysis, and PARP cleavage, was significantly lower in HSP72-overexpressing cells than in control cells. The HDACi-induced upregulation in caspase-3, -8, and -9 activity, as well as the HDACi-induced reduction in mitochondrial membrane potential, were also suppressed following HSP72 overexpression. The basal expression levels of Bcl-2, phosphorylated Bad, and XIAP increased in HSP72-overexpressing cells, whereas HDACi-induced Bid truncation and the suppression of Bad expression. Furthermore, vorinostat-induced histone hyperacetylation was also diminished in HSP72-overexpressing cells. CONCLUSION These findings clearly demonstrate that HSP72 inhibits HDACi-induced apoptosis.
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Affiliation(s)
- Kazuyasu Fujii
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1, Sakuragaoka, Kagoshima, Japan.
| | - Norihiro Suzuki
- Department of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Nozomi Jimura
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1, Sakuragaoka, Kagoshima, Japan
| | - Masashi Idogawa
- Department of Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tadashi Kondo
- Division of Rare Cancer Research, National Cancer Center Research Institute, Tokyo, Japan
| | - Keiji Iwatsuki
- Department of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Takuro Kanekura
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1, Sakuragaoka, Kagoshima, Japan
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Abstract
Heat shock protein 70 (Hsp70) is the most ubiquitous stress-inducible chaperone. It accumulates in the cells in response to a wide variety of physiological and environmental insults including anticancer chemotherapy, thus allowing the cell to survive to lethal conditions. Intracellular Hsp70 is viewed as a cytoprotective protein. Indeed, this protein can inhibit key effectors of the apoptotic and autophagy machineries. In cancer cells, the expression of Hsp70 is abnormally high, and Hsp70 may participate in oncogenesis and in resistance to chemotherapy. In rodent models, Hsp70 overexpression increases tumor growth and metastatic potential. Depletion or inhibition of Hsp70 frequently reduces the size of the tumors and can even cause their complete involution. However, HSP70 is also found in the extra-cellular space where it may signal via membrane receptors or endosomes to alter gene transcription and cellular function. Overall, Hsp70 extracellular function is believed to be immnunogenic and the term chaperokine to define the extracellular chaperones such as Hsp70 has been advanced. In this chapter the knowledge to date, as well as some emerging paradigms about the intra- and extra-cellular functions of Hsp70, are presented. The strategies targeting Hsp70 that are being developed in cancer therapy will also be discussed.
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Affiliation(s)
- Christophe Boudesco
- Univ. Bourgogne Franche-Comté, LNC UMR1231, Dijon, France
- INSERM, LNC UMR1231, Dijon, France
- Equipe Labellisée par la Ligue Nationale Contre le Cancer, INSERM, LNC UMR1231, Dijon, France
- LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne Franche-Comté, Dijon, France
| | - Sebastien Cause
- Univ. Bourgogne Franche-Comté, LNC UMR1231, Dijon, France
- INSERM, LNC UMR1231, Dijon, France
- Equipe Labellisée par la Ligue Nationale Contre le Cancer, INSERM, LNC UMR1231, Dijon, France
- LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne Franche-Comté, Dijon, France
| | - Gaëtan Jego
- Univ. Bourgogne Franche-Comté, LNC UMR1231, Dijon, France.
- INSERM, LNC UMR1231, Dijon, France.
- Equipe Labellisée par la Ligue Nationale Contre le Cancer, INSERM, LNC UMR1231, Dijon, France.
- LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne Franche-Comté, Dijon, France.
| | - Carmen Garrido
- Univ. Bourgogne Franche-Comté, LNC UMR1231, Dijon, France.
- INSERM, LNC UMR1231, Dijon, France.
- Equipe Labellisée par la Ligue Nationale Contre le Cancer, INSERM, LNC UMR1231, Dijon, France.
- LipSTIC LabEx, Fondation de Coopération Scientifique Bourgogne Franche-Comté, Dijon, France.
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Abstract
BACKGROUND Sustained proliferation and genetic instability of cancer cells are associated with enhanced production of mutated and conformationally unstable proteins. Excessive proteosynthesis along with increased metabolic turnover generates stress conditions that cancer cells must permanently compensate for. Tumor cells thus become dependent on the maintenance of protein homeostasis, which involves protein quality control, folding, transport and stabilization. These tasks are provided by molecular chaperones, predominantly the stress proteins HSP70 and HSP90. Their expression and activity is increased in all malignant tumors, where they associate with their cochaperones to form large multiprotein complexes. HSP70 and HSP90 maintain the malignant phenotype because they facilitate the folding of numerous oncogenic proteins, maintain proliferative potential, and inhibit apoptosis. In this regard, heat-shock proteins represent an important target for cancer therapy because their inactivation results in the simultaneous blockade of multiple signaling pathways. Although several specific HSP90 inhibitors have been developed in the past decade, their antitumor activity as single agents is limited due to the induction of HSP70, which enables cell survival. Inhibitors of HSP70 thus present new possibilities for targeting proteostatic mechanisms in cancer cells. AIM The aim of this article is to summarize information on the structure of HSP70 and its role in maintaining protein homeostasis in normal and cancer cells. The mechanisms of HSP70 inhibition by low-molecular weight compounds and their application in targeted antitumor therapy are also described. Key words: HSP70 - stress proteins - molecular chaperons - cellular stress - tumours - protein folding This work was supported by the project MEYS - NPS I - LO1413. The authors declare they have no potential conflicts of interest concerning drugs, products, or services used in the study. The Editorial Board declares that the manuscript met the ICMJE recommendation for biomedical papers. Accepted: 16. 08. 2018.
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Kita K, Shiota M, Tanaka M, Otsuka A, Matsumoto M, Kato M, Tamada S, Iwao H, Miura K, Nakatani T, Tomita S. Heat shock protein 70 inhibitors suppress androgen receptor expression in LNCaP95 prostate cancer cells. Cancer Sci 2017; 108:1820-1827. [PMID: 28691182 PMCID: PMC5581527 DOI: 10.1111/cas.13318] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 07/03/2017] [Accepted: 07/06/2017] [Indexed: 12/31/2022] Open
Abstract
Androgen deprivation therapy is initially effective for treating patients with advanced prostate cancer; however, the prostate cancer gradually becomes resistant to androgen deprivation therapy, which is termed castration-resistant prostate cancer (CRPC). Androgen receptor splice variant 7 (AR-V7), one of the causes of CRPC, is correlated with resistance to a new-generation AR antagonist (enzalutamide) and poor prognosis. Heat shock protein 70 (Hsp70) inhibitor is known to decrease the levels of full-length AR (AR-FL), but little is known about its effects against CRPC cells expressing AR-V7. In this study, we investigated the effect of the Hsp70 inhibitors quercetin and VER155008 in the prostate cancer cell line LNCaP95 that expresses AR-V7, and explored the mechanism by which Hsp70 regulates AR-FL and AR-V7 expression. Quercetin and VER155008 decreased cell proliferation, increased the proportion of apoptotic cells, and decreased the protein levels of AR-FL and AR-V7. Furthermore, VER155008 decreased AR-FL and AR-V7 mRNA levels. Immunoprecipitation with Hsp70 antibody and mass spectrometry identified Y-box binding protein 1 (YB-1) as one of the molecules regulating AR-FL and AR-V7 at the transcription level through interaction with Hsp70. VER155008 decreased the phosphorylation of YB-1 and its localization in the nucleus, indicating that the involvement of Hsp70 in AR regulation might be mediated through the activation and nuclear translocation of YB-1. Collectively, these results suggest that Hsp70 inhibitors have potential anti-tumor activity against CRPC by decreasing AR-FL and AR-V7 expression through YB-1 suppression.
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Affiliation(s)
- Kazuaki Kita
- Department of UrologyOsaka City University Medical SchoolOsakaJapan
| | - Masayuki Shiota
- Department of PharmacologyOsaka City University Medical SchoolOsakaJapan
- Department of Research Support PlatformOsaka City University Medical SchoolOsakaJapan
| | - Masako Tanaka
- Department of Applied Pharmacology and TherapeuticsOsaka City University Medical SchoolOsakaJapan
| | - Asuka Otsuka
- Department of Applied Pharmacology and TherapeuticsOsaka City University Medical SchoolOsakaJapan
| | - Masaki Matsumoto
- Department of Molecular and Cellular BiologyMedical Institute of BioregulationKyushu UniversityFukuokaJapan
| | - Minoru Kato
- Department of UrologyOsaka City University Medical SchoolOsakaJapan
| | - Satoshi Tamada
- Department of UrologyOsaka City University Medical SchoolOsakaJapan
| | | | - Katsuyuki Miura
- Department of Applied Pharmacology and TherapeuticsOsaka City University Medical SchoolOsakaJapan
| | - Tatsuya Nakatani
- Department of UrologyOsaka City University Medical SchoolOsakaJapan
| | - Shuhei Tomita
- Department of PharmacologyOsaka City University Medical SchoolOsakaJapan
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31
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Mori Y, Terauchi R, Shirai T, Tsuchida S, Mizoshiri N, Arai Y, Kishida T, Fujiwara H, Mazda O, Kubo T. Suppression of heat shock protein 70 by siRNA enhances the antitumor effects of cisplatin in cultured human osteosarcoma cells. Cell Stress Chaperones 2017; 22:699-706. [PMID: 28466152 PMCID: PMC5573688 DOI: 10.1007/s12192-017-0793-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/25/2017] [Accepted: 03/28/2017] [Indexed: 12/30/2022] Open
Abstract
Although advances in chemotherapy have improved the prognosis for osteosarcoma, some patients do not respond sufficiently to treatment. Heat shock protein 70 (Hsp70) is expressed at high levels in cancer cells and attenuates the therapeutic efficacy of anticancer agents, resulting in a poorer prognosis. This study investigated whether small interfering RNA (siRNA)-mediated inhibition of Hsp70 expression in an osteosarcoma cell line would enhance sensitivity to cisplatin. The expression of Hsp70 with cisplatin treatment was observed by using Western blotting and real-time reverse transcription polymerase chain reaction (RT-PCR). Changes in the IC50 of cisplatin when Hsp70 was inhibited by siRNA were evaluated. Cisplatin's effectiveness in inducing apoptosis was assessed by assay of terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL), caspase-3 activity, and mitochondrial membrane potential. Up-regulation of Hsp70 expression was dependent on the concentration of cisplatin. Inhibition of Hsp70 expression significantly reduced the IC50 of cisplatin. When cisplatin was added to osteosarcoma cells with Hsp70 expression inhibited, a significant increase in apoptosis was demonstrated in TUNEL, caspase-3, and mitochondrial membrane potential assays. Inhibition of Hsp70 expression induced apoptosis in cultured osteosarcoma cells, indicating that Hsp70 inhibition enhanced sensitivity to cisplatin. Inhibition of Hsp70 expression may provide a new adjuvant therapy for osteosarcoma.
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Affiliation(s)
- Yuki Mori
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Ryu Terauchi
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Toshiharu Shirai
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan.
| | - Shinji Tsuchida
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Naoki Mizoshiri
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Yuji Arai
- Department of Sports and Para-Sports Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Tsunao Kishida
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Hiroyoshi Fujiwara
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Osam Mazda
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Toshikazu Kubo
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
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Zininga T, Anokwuru CP, Sigidi MT, Tshisikhawe MP, Ramaite IID, Traoré AN, Hoppe H, Shonhai A, Potgieter N. Extracts Obtained from Pterocarpus angolensis DC and Ziziphus mucronata Exhibit Antiplasmodial Activity and Inhibit Heat Shock Protein 70 (Hsp70) Function. Molecules 2017; 22:molecules22081224. [PMID: 28788073 PMCID: PMC6152082 DOI: 10.3390/molecules22081224] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 07/17/2017] [Accepted: 07/18/2017] [Indexed: 11/23/2022] Open
Abstract
Malaria parasites are increasingly becoming resistant to currently used antimalarial therapies, therefore there is an urgent need to expand the arsenal of alternative antimalarial drugs. In addition, it is also important to identify novel antimalarial drug targets. In the current study, extracts of two plants, Pterocarpus angolensis and Ziziphus mucronata were obtained and their antimalarial functions were investigated. Furthermore, we explored the capability of the extracts to inhibit Plasmodium falciparum heat shock protein 70 (Hsp70) function. Heat shock protein 70 (Hsp70) are molecular chaperones whose function is to facilitate protein folding. Plasmodium falciparum the main agent of malaria, expresses two cytosol-localized Hsp70s: PfHsp70-1 and PfHsp70-z. The PfHsp70-z has been reported to be essential for parasite survival, while inhibition of PfHsp70-1 function leads to parasite death. Hence both PfHsp70-1 and PfHsp70-z are potential antimalarial drug targets. Extracts of P. angolensis and Z. mucronata inhibited the basal ATPase and chaperone functions of the two parasite Hsp70s. Furthermore, fractions of P. angolensis and Z. mucronata inhibited P. falciparum 3D7 parasite growth in vitro. The extracts obtained in the current study exhibited antiplasmodial activity as they killed P. falciparum parasites maintained in vitro. In addition, the findings further suggest that some of the compounds in P. angolensis and Z. mucronata may target parasite Hsp70 function.
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Affiliation(s)
- Tawanda Zininga
- Biochemistry Department, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, 0950 Thohoyandou, South Africa.
| | - Chinedu P Anokwuru
- Chemistry Department, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, 0950 Thohoyandou, South Africa.
| | - Muendi T Sigidi
- Microbiology Department, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, 0950 Thohoyandou, South Africa.
| | - Milingoni P Tshisikhawe
- Botany Department, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, 0950 Thohoyandou, South Africa.
| | - Isaiah I D Ramaite
- Chemistry Department, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, 0950 Thohoyandou, South Africa.
| | - Afsatou N Traoré
- Microbiology Department, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, 0950 Thohoyandou, South Africa.
| | - Heinrich Hoppe
- Department of Biochemistry and Microbiology, Rhodes University, P.O. Box 94, Grahamstown 6140, South Africa.
| | - Addmore Shonhai
- Biochemistry Department, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, 0950 Thohoyandou, South Africa.
| | - Natasha Potgieter
- Microbiology Department, School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, 0950 Thohoyandou, South Africa.
- School of Mathematical and Natural Sciences, University of Venda, Private Bag X5050, 0950 Thohoyandou, South Africa.
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Petiz LL, Girardi CS, Bortolin RC, Kunzler A, Gasparotto J, Rabelo TK, Matté C, Moreira JCF, Gelain DP. Vitamin A Oral Supplementation Induces Oxidative Stress and Suppresses IL-10 and HSP70 in Skeletal Muscle of Trained Rats. Nutrients 2017; 9:E353. [PMID: 28368329 PMCID: PMC5409692 DOI: 10.3390/nu9040353] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 03/28/2017] [Accepted: 03/29/2017] [Indexed: 12/14/2022] Open
Abstract
Exercise training intensity is the major variant that influences the relationship between exercise, redox balance, and immune response. Supplement intake is a common practice for oxidative stress prevention; the effects of vitamin A (VA) on exercise training are not yet described, even though this molecule exhibits antioxidant properties. We investigated the role of VA supplementation on redox and immune responses of adult Wistar rats subjected to swimming training. Animals were divided into four groups: sedentary, sedentary + VA, exercise training, and exercise training + VA. Over eight weeks, animals were submitted to intense swimming 5 times/week and a VA daily intake of 450 retinol equivalents/day. VA impaired the total serum antioxidant capacity acquired by exercise, with no change in interleukin-1β and tumor necrosis factor-α levels. In skeletal muscle, VA caused lipid peroxidation and protein damage without differences in antioxidant enzyme activities; however, Western blot analysis showed that expression of superoxide dismutase-1 was downregulated, and upregulation of superoxide dismutase-2 induced by exercise was blunted by VA. Furthermore, VA supplementation decreased anti-inflammatory interleukin-10 and heat shock protein 70 expression, important factors for positive exercise adaptations and tissue damage prevention. Our data showed that VA supplementation did not confer any antioxidative and/or protective effects, attenuating exercise-acquired benefits in the skeletal muscle.
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Affiliation(s)
- Lyvia Lintzmaier Petiz
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, 90035-000, Porto Alegre, Brazil.
| | - Carolina Saibro Girardi
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, 90035-000, Porto Alegre, Brazil.
| | - Rafael Calixto Bortolin
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, 90035-000, Porto Alegre, Brazil.
| | - Alice Kunzler
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, 90035-000, Porto Alegre, Brazil.
| | - Juciano Gasparotto
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, 90035-000, Porto Alegre, Brazil.
| | - Thallita Kelly Rabelo
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, 90035-000, Porto Alegre, Brazil.
| | - Cristiane Matté
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, 90035-000, Porto Alegre, Brazil.
| | - José Claudio Fonseca Moreira
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, 90035-000, Porto Alegre, Brazil.
| | - Daniel Pens Gelain
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, 90035-000, Porto Alegre, Brazil.
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Lee SL, Dempsey-Hibbert NC, Vimalachandran D, Wardle TD, Sutton PA, Williams JHH. Re-examining HSPC1 inhibitors. Cell Stress Chaperones 2017; 22:293-306. [PMID: 28255900 PMCID: PMC5352602 DOI: 10.1007/s12192-017-0774-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 02/03/2017] [Accepted: 02/03/2017] [Indexed: 12/20/2022] Open
Abstract
HSPC1 is a critical protein in cancer development and progression, including colorectal cancer (CRC). However, clinical trial data reporting the effectiveness of HSPC1 inhibitors on several cancer types has not been as successful as predicted. Furthermore, some N-terminal inhibitors appear to be much more successful than others despite similar underlying mechanisms. This study involved the application of three N-terminal HSPC1 inhibitors, 17-DMAG, NVP-AUY922 and NVP-HSP990 on CRC cells. The effects on client protein levels over time were examined. HSPC1 inhibitors were also applied in combination with chemotherapeutic agents commonly used in CRC treatment (5-fluorouracil, oxaliplatin and irinotecan). As HSPA1A and HSPB1 have anti-apoptotic activity, gene-silencing techniques were employed to investigate the significance of these proteins in HSPC1 inhibitor and chemotherapeutic agent resistance. When comparing the action of the three HSPC1 inhibitors, there are distinct differences in the time course of important client protein degradation events. The differences between HSPC1 inhibitors were also reflected in combination treatment-17-DMAG was more effective compared with NVP-AUY922 in potentiating the cytotoxic effects of 5-fluorouracil, oxaliplatin and irinotecan. This study concludes that there are distinct differences between N-terminal HSPC1 inhibitors, despite their common mode of action. Although treatment with each of the inhibitors results in significant induction of the anti-apoptotic proteins HSPA1A and HSPB1, sensitivity to HSPC1 inhibitors is not improved by gene silencing of HSPA1A or HSPB1. HSPC1 inhibitors potentiate the cytotoxic effects of chemotherapeutic agents in CRC, and this approach is readily available to enter clinical trials. From a translational point of view, there may be great variability in sensitivity to the inhibitors between individual patients.
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Affiliation(s)
- Sheah Lin Lee
- Chester Centre for Stress Research, Institute of Medicine, University of Chester, Bache Hall, CH2 1BR, Chester, UK.
- University Hospital Southampton, Tremona Road, SO16 6YD, Southampton, UK.
| | - Nina Claire Dempsey-Hibbert
- Chester Centre for Stress Research, Institute of Medicine, University of Chester, Bache Hall, CH2 1BR, Chester, UK
- Centre for Biomedicine Research, Manchester Metropolitan University, Chester Street, M1 5GD, Manchester, UK
| | | | | | - Paul A Sutton
- Countess of Chester Hospital, Liverpool Rd, CH2 1UL, Chester, UK
| | - John H H Williams
- Chester Centre for Stress Research, Institute of Medicine, University of Chester, Bache Hall, CH2 1BR, Chester, UK
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Liu T, Krysiak K, Shirai CL, Kim S, Shao J, Ndonwi M, Walter MJ. Knockdown of HSPA9 induces TP53-dependent apoptosis in human hematopoietic progenitor cells. PLoS One 2017; 12:e0170470. [PMID: 28178280 PMCID: PMC5298293 DOI: 10.1371/journal.pone.0170470] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 01/05/2017] [Indexed: 11/19/2022] Open
Abstract
Myelodysplastic syndromes (MDS) are the most common adult myeloid blood cancers in the US. Patients have increased apoptosis in their bone marrow cells leading to low peripheral blood counts. The full complement of gene mutations that contribute to increased apoptosis in MDS remains unknown. Up to 25% of MDS patients harbor and acquired interstitial deletion on the long arm of chromosome 5 [del(5q)], creating haploinsufficiency for a large set of genes including HSPA9. Knockdown of HSPA9 in primary human CD34+ hematopoietic progenitor cells significantly inhibits growth and increases apoptosis. We show here that HSPA9 knockdown is associated with increased TP53 expression and activity, resulting in increased expression of target genes BAX and p21. HSPA9 protein interacts with TP53 in CD34+ cells and knockdown of HSPA9 increases nuclear TP53 levels, providing a possible mechanism for regulation of TP53 by HSPA9 haploinsufficiency in hematopoietic cells. Concurrent knockdown of TP53 and HSPA9 rescued the increased apoptosis observed in CD34+ cells following knockdown of HSPA9. Reduction of HSPA9 below 50% results in severe inhibition of cell growth, suggesting that del(5q) cells may be preferentially sensitive to further reductions of HSPA9 below 50%, thus providing a genetic vulnerability to del(5q) cells. Treatment of bone marrow cells with MKT-077, an HSPA9 inhibitor, induced apoptosis in a higher percentage of cells from MDS patients with del(5q) compared to non-del(5q) MDS patients and normal donor cells. Collectively, these findings indicate that reduced levels of HSPA9 may contribute to TP53 activation and increased apoptosis observed in del(5q)-associated MDS.
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Affiliation(s)
- Tuoen Liu
- Department of Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Kilannin Krysiak
- Department of Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Cara Lunn Shirai
- Department of Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Sanghyun Kim
- Department of Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Jin Shao
- Department of Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Matthew Ndonwi
- Department of Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Matthew J Walter
- Department of Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, Missouri, United States of America
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, Missouri, United States of America
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Asling J, Morrison J, Mutsaers AJ. Targeting HSP70 and GRP78 in canine osteosarcoma cells in combination with doxorubicin chemotherapy. Cell Stress Chaperones 2016; 21:1065-1076. [PMID: 27631331 PMCID: PMC5083675 DOI: 10.1007/s12192-016-0730-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 08/03/2016] [Accepted: 08/09/2016] [Indexed: 12/18/2022] Open
Abstract
Heat shock proteins (HSPs) are molecular chaperones subdivided into several families based on their molecular weight. Due to their cytoprotective roles, these proteins may help protect cancer cells against chemotherapy-induced cell death. Investigation into the biologic activity of HSPs in a variety of cancers including primary bone tumors, such as osteosarcoma (OSA), is of great interest. Both human and canine OSA tumor samples have aberrant production of HSP70. This study assessed the response of canine OSA cells to inhibition of HSP70 and GRP78 by the ATP-mimetic VER-155008 and whether this treatment strategy could sensitize cells to doxorubicin chemotherapy. Single-agent VER-155008 treatment decreased cellular viability and clonogenic survival and increased apoptosis in canine OSA cell lines. However, combination schedules with doxorubicin after pretreatment with VER-155008 did not improve inhibition of cellular viability, apoptosis, or clonogenic survival. Treatment with VER-155008 prior to chemotherapy resulted in an upregulation of target proteins HSP70 and GRP78 in addition to the co-chaperone proteins Herp, C/EBP homologous transcription protein (CHOP), and BAG-1. The increased GRP78 was more cytoplasmic in location compared to untreated cells. Single-agent treatment also revealed a dose-dependent reduction in activated and total Akt. Based on these results, targeting GRP78 and HSP70 may have biologic activity in canine osteosarcoma. Further studies are required to determine if and how this strategy may impact the response of osteosarcoma cells to chemotherapy.
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Affiliation(s)
- Jonathan Asling
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Jodi Morrison
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Anthony J Mutsaers
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, N1G 2W1, Canada.
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, N1G 2W1, Canada.
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刘 健, 刘 静, 李 胜, 郑 迎, 郭 苏, 王 秀. [Inhibiting HSP70 expression enhances cisplatin sensitivity of cervical cancer cells]. Nan Fang Yi Ke Da Xue Xue Bao 2016; 37:475-481. [PMID: 28446399 PMCID: PMC6744087 DOI: 10.3969/j.issn.1673-4254.2017.04.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate the relationship between sensitivity to cisplatin (DDP) and the expression of HSP70 in cervical cancer cells in vitro. METHODS Cervical cancer Hela229 cells treated with different concentrations of DDP and the HSP70 inhibitor (PFT-µ) were examined for cell viability using MTT assay and colony forming ability. The cell apoptosis was analyzed by flow cytometry with propidium iodide staining and DAPI staining, and JC-1 staining was used to determine mitochondrial membrane potential. The expressions of HSP70, Bcl-2, Bax and caspase-3 were measured with Western blotting. A nude mouse model bearing Hela229 cell xenograft was used to evaluate the effect of DDP and PFT-µ on tumor growth. RESULTS Hela229 cells expressed a higher level of HSP70 than normal cervical cells. The combined use of PFT-µ significantly enhanced the inhibitory effect of DDP (P<0.01) and increased the cell apoptosis in Hela229 cells. JC-1 staining demonstrated that DDP combined with PFT-µ more obviously reduced mitochondrial membrane potential. DDP combined with PFT-µ more strongly lowered Bcl-2 expression and increased the expressions of casepase-3 and Bax than DDP alone. In the nude mouse model, PFT-µ significantly enhanced DDP sensitivity of Hela229 cell xenografts (P<0.01). CONCLUSIONS Inhibition of HSP70 expression can enhance the sensitivity of cervical cancer cell to DDP both in vivo and in vitro possibly by promoting cell apoptosis, suggesting the potential of HSP70 as a new target for gene therapy of cervical cancer.
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Affiliation(s)
- 健 刘
- 蚌埠医学院药学院,安徽 蚌埠 233000Bengbu Medical College, Bengbu 233030, China
- 蚌埠医学院第一附属医院妇瘤科,安徽 蚌埠 233004Department of Gynecological Oncology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - 静 刘
- 蚌埠医学院药学院,安徽 蚌埠 233000Bengbu Medical College, Bengbu 233030, China
- 蚌埠医学院第一附属医院妇瘤科,安徽 蚌埠 233004Department of Gynecological Oncology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - 胜泽 李
- 蚌埠医学院药学院,安徽 蚌埠 233000Bengbu Medical College, Bengbu 233030, China
- 蚌埠医学院第一附属医院妇瘤科,安徽 蚌埠 233004Department of Gynecological Oncology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - 迎奥 郑
- 蚌埠医学院药学院,安徽 蚌埠 233000Bengbu Medical College, Bengbu 233030, China
- 蚌埠医学院第一附属医院妇瘤科,安徽 蚌埠 233004Department of Gynecological Oncology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - 苏阳 郭
- 蚌埠医学院药学院,安徽 蚌埠 233000Bengbu Medical College, Bengbu 233030, China
- 蚌埠医学院第一附属医院妇瘤科,安徽 蚌埠 233004Department of Gynecological Oncology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - 秀 王
- 蚌埠医学院药学院,安徽 蚌埠 233000Bengbu Medical College, Bengbu 233030, China
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Abstract
Heat shock proteins (HSPs) HSP27, HSP70 and HSP90 are molecular chaperones; their expression is increased after exposure of cells to conditions of environmental stress, including heat shock, heavy metals, oxidative stress, or pathologic conditions, such as ischemia, infection, and inflammation. Their protective function is to help the cell cope with lethal conditions. The HSPs are a class of proteins which, in normal cells, are responsible for maintaining homeostasis, interacting with diverse protein substrates to assist in their folding, and preventing the appearance of folding intermediates that lead to misfolded or damaged molecules. They have been shown to interact with different key apoptotic proteins and play a crucial role in regulating apoptosis. Several HSPs have been demonstrated to directly interact with various components of tightly regulated caspase-dependent programmed cell death. These proteins also affect caspase-independent apoptosis by interacting with apoptogenic factors. Heat shock proteins are aberrantly expressed in hematological malignancies. Because of their prognostic implications and functional role in leukemias, HSPs represent an interesting target for antileukemic therapy. This review will describe different molecules interacting with anti-apoptotic proteins HSP70 and HSP90, which can be used in cancer therapy based on their inhibition.
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Howe MK, Speer BL, Hughes PF, Loiselle DR, Vasudevan S, Haystead TAJ. An inducible heat shock protein 70 small molecule inhibitor demonstrates anti-dengue virus activity, validating Hsp70 as a host antiviral target. Antiviral Res 2016; 130:81-92. [PMID: 27058774 DOI: 10.1016/j.antiviral.2016.03.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 03/31/2016] [Accepted: 03/31/2016] [Indexed: 12/27/2022]
Abstract
An estimated three billion people are at risk of Dengue virus (DENV) infection worldwide and there are currently no approved therapeutic interventions for DENV infection. Due to the relatively small size of the DENV genome, DENV is reliant on host factors throughout the viral life cycle. The inducible form of Heat Shock Protein 70 (Hsp70i) has been implicated as a host factor in DENV pathogenesis, however the complete role remains to be elucidated. Here we further illustrate the importance of Hsp70i in dengue virus pathogenesis and describe the antiviral activity of the allosteric small molecule inhibitor that is selective for Hsp70i, called HS-72. In monocytes, Hsp70i is expressed at low levels preceding DENV infection, but Hsp70i expression is induced upon DENV infection. Targeting Hsp70i with HS-72, results in a dose dependent reduction in DENV infected monocytes, while cell viability was maintained. HS-72 works to reduce DENV infection by inhibiting the entry stage of the viral life cycle, through disrupting the association of Hsp70i with the DENV receptor complex. This work highlights Hsp70i as an antiviral target and HS-72 as a potential anti-DENV therapeutic agent.
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Affiliation(s)
- Matthew K Howe
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA
| | - Brittany L Speer
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA
| | - Philip F Hughes
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA
| | - David R Loiselle
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA
| | - Subhash Vasudevan
- Emerging Infectious Diseases Program, Duke-NUS Graduate and Medical School, Singapore
| | - Timothy A J Haystead
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA.
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Shevtsov MA, Nikolaev BP, Ryzhov VA, Yakovleva LY, Marchenko YY, Parr MA, Rolich VI, Mikhrina AL, Dobrodumov AV, Pitkin E, Multhoff G. Ionizing radiation improves glioma-specific targeting of superparamagnetic iron oxide nanoparticles conjugated with cmHsp70.1 monoclonal antibodies (SPION-cmHsp70.1). Nanoscale 2015; 7:20652-20664. [PMID: 26599206 DOI: 10.1039/c5nr06521f] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The stress-inducible 72 kDa heat shock protein Hsp70 is known to be expressed on the membrane of highly aggressive tumor cells including high-grade gliomas, but not on the corresponding normal cells. Membrane Hsp70 (mHsp70) is rapidly internalized into tumor cells and thus targeting of mHsp70 might provide a promising strategy for theranostics. Superparamagnetic iron oxide nanoparticles (SPIONs) are contrast negative agents that are used for the detection of tumors with MRI. Herein, we conjugated the Hsp70-specific antibody (cmHsp70.1) which is known to recognize mHsp70 to superparamagnetic iron nanoparticles to assess tumor-specific targeting before and after ionizing irradiation. In vitro experiments demonstrated the selectivity of SPION-cmHsp70.1 conjugates to free and mHsp70 in different tumor cell types (C6 glioblastoma, K562 leukemia, HeLa cervix carcinoma) in a dose-dependent manner. High-resolution MRI (11 T) on T(2)-weighted images showed the retention of the conjugates in the C6 glioma model. Accumulation of SPION-cmHsp70.1 nanoparticles in the glioma resulted in a nearly 2-fold drop of T*(2) values in comparison to non-conjugated SPIONs. Biodistribution analysis using NLR-M(2) measurements showed a 7-fold increase in the tumor-to-background (normal brain) uptake ratio of SPION-cmHsp70.1 conjugates in glioma-bearing rats in comparison to SPIONs. This accumulation within Hsp70-positive glioma was further enhanced after a single dose (10 Gy) of ionizing radiation. Elevated accumulation of the magnetic conjugates in the tumor due to radiosensitization proves the combination of radiotherapy and application of Hsp70-targeted agents in brain tumors.
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Affiliation(s)
- Maxim A Shevtsov
- Institute of Cytology of the Russian Academy of Sciences (RAS), Tikhoretsky ave., 4, St. Petersburg, 194064, Russia.
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Molatlhegi RP, Phulukdaree A, Anand K, Gengan RM, Tiloke C, Chuturgoon AA. Cytotoxic Effect of a Novel Synthesized Carbazole Compound on A549 Lung Cancer Cell Line. PLoS One 2015; 10:e0129874. [PMID: 26134408 PMCID: PMC4489925 DOI: 10.1371/journal.pone.0129874] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 05/14/2015] [Indexed: 11/18/2022] Open
Abstract
Increased death rates due to lung cancer have necessitated the search for potential novel anticancer compounds such as carbazole derivatives. Carbazoles are aromatic heterocyclic compounds with anticancer, antibacterial and anti-inflammatory activity. The study investigated the ability of the novel carbazole compound (Z)-4-[9-ethyl-9aH-carbazol-3-yl) amino] pent-3-en-2-one (ECAP) to induce cytotoxicity of lung cancer cells and its mechanism of action. ECAP was synthesized as a yellow powder with melting point of 240-247 °C. The 3-(4,5-dimethythiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT), lipid peroxidation and comet assays were used to assess the cytotoxic effect of the compound on A549 lung cancer cells. Protein expression was determined using western blots, apoptosis was measured by luminometry (caspase-3/7, -8 and -9) assay and flow cytometry was used to measure phosphatidylserine (PS) externalisation. ECAP induced a p53 mediated apoptosis of lung cancer cells due to a significant reduction in the expression of antioxidant defence proteins (Nrf2 and SOD), Hsp70 (p < 0.02) and Bcl-2 (p < 0.0006), thereby up-regulating reactive oxygen species (ROS) production. This resulted in DNA damage (p < 0.0001), up-regulation of Bax expression and caspase activity and induction of apoptosis in lung cancer cells. The results show the anticancer potential of ECAP on lung cancer.
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Affiliation(s)
- Refilwe P. Molatlhegi
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, RSA
| | - Alisa Phulukdaree
- Department of Physiology, School of Medicine, University of Pretoria, Pretoria, RSA
| | - Krishnan Anand
- Department of Chemistry, Faculty of Applied Sciences, Durban University of Technology, Durban, RSA
| | - Robert M. Gengan
- Department of Chemistry, Faculty of Applied Sciences, Durban University of Technology, Durban, RSA
| | - Charlette Tiloke
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, RSA
| | - Anil A. Chuturgoon
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, RSA
- * E-mail:
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Kondrikov D, Fulton D, Dong Z, Su Y. Heat Shock Protein 70 Prevents Hyperoxia-Induced Disruption of Lung Endothelial Barrier via Caspase-Dependent and AIF-Dependent Pathways. PLoS One 2015; 10:e0129343. [PMID: 26066050 PMCID: PMC4465980 DOI: 10.1371/journal.pone.0129343] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 05/07/2015] [Indexed: 12/03/2022] Open
Abstract
Exposure of pulmonary artery endothelial cells (PAECs) to hyperoxia results in a compromise in endothelial monolayer integrity, an increase in caspase-3 activity, and nuclear translocation of apoptosis-inducing factor (AIF), a marker of caspase-independent apoptosis. In an endeavor to identify proteins involved in hyperoxic endothelial injury, we found that the protein expression of heat-shock protein 70 (Hsp70) was increased in hyperoxic PAECs. The hyperoxia-induced Hsp70 protein expression is from hspA1B gene. Neither inhibition nor overexpression of Hsp70 affected the first phase barrier disruption of endothelial monolayer. Nevertheless, inhibition of Hsp70 by using the Hsp70 inhibitor KNK437 or knock down Hsp70 using siRNA exaggerated and overexpression of Hsp70 prevented the second phase disruption of lung endothelial integrity. Moreover, inhibition of Hsp70 exacerbated and overexpression of Hsp70 prevented hyperoxia-induced apoptosis, caspase-3 activation, and increase in nuclear AIF protein level in PAECs. Furthermore, we found that Hsp70 interacted with AIF in the cytosol in hyperoxic PAECs. Inhibition of Hsp70/AIF association by KNK437 correlated with increased nuclear AIF level and apoptosis in KNK437-treated PAECs. Finally, the ROS scavenger NAC prevented the hyperoxia-induced increase in Hsp70 expression and reduced the interaction of Hsp70 with AIF in hyperoxic PAECs. Together, these data indicate that increased expression of Hsp70 plays a protective role against hyperoxia-induced lung endothelial barrier disruption through caspase-dependent and AIF-dependent apoptotic pathways. Association of Hsp70 with AIF prevents AIF nuclear translocation, contributing to the protective effect of Hsp70 on hyperoxia-induced endothelial apoptosis. The hyperoxia-induced increase in Hsp70 expression and Hsp70/AIF interaction is contributed to ROS formation.
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Affiliation(s)
- Dmitry Kondrikov
- Department of Pharmacology & Toxicology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, United States of America
| | - David Fulton
- Department of Pharmacology & Toxicology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, United States of America
- Vascular Biology Center, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, United States of America
| | - Zheng Dong
- Department of Cell Biology and Anatomy, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, United States of America
- Research Service, Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia 30912, United States of America
| | - Yunchao Su
- Department of Pharmacology & Toxicology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, United States of America
- Department of Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, United States of America
- Vascular Biology Center, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, United States of America
- Research Service, Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia 30912, United States of America
- * E-mail:
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Chiappori F, Fumian M, Milanesi L, Merelli I. DnaK as Antibiotic Target: Hot Spot Residues Analysis for Differential Inhibition of the Bacterial Protein in Comparison with the Human HSP70. PLoS One 2015; 10:e0124563. [PMID: 25905464 PMCID: PMC4408060 DOI: 10.1371/journal.pone.0124563] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 03/16/2015] [Indexed: 11/24/2022] Open
Abstract
DnaK, the bacterial homolog of human Hsp70, plays an important role in pathogens survival under stress conditions, like antibiotic therapies. This chaperone sequesters protein aggregates accumulated in bacteria during antibiotic treatment reducing the effect of the cure. Although different classes of DnaK inhibitors have been already designed, they present low specificity. DnaK is highly conserved in prokaryotes (identity 50–70%), which encourages the development of a unique inhibitor for many different bacterial strains. We used the DnaK of Acinetobacter baumannii as representative for our analysis, since it is one of the most important opportunistic human pathogens, exhibits a significant drug resistance and it has the ability to survive in hospital environments. The E.coli DnaK was also included in the analysis as reference structure due to its wide diffusion. Unfortunately, bacterial DnaK and human Hsp70 have an elevated sequence similarity. Therefore, we performed a differential analysis of DnaK and Hsp70 residues to identify hot spots in bacterial proteins that are not present in the human homolog, with the aim of characterizing the key pharmacological features necessary to design selective inhibitors for DnaK. Different conformations of DnaK and Hsp70 bound to known inhibitor-peptides for DnaK, and ineffective for Hsp70, have been analysed by molecular dynamics simulations to identify residues displaying stable and selective interactions with these peptides. Results achieved in this work show that there are some residues that can be used to build selective inhibitors for DnaK, which should be ineffective for the human Hsp70.
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Affiliation(s)
- Federica Chiappori
- Institute of Biomedical Technologies, National Research Council (CNR), Segrate (Mi), Italy
- * E-mail:
| | - Marco Fumian
- Institute of Biomedical Technologies, National Research Council (CNR), Segrate (Mi), Italy
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Luciano Milanesi
- Institute of Biomedical Technologies, National Research Council (CNR), Segrate (Mi), Italy
| | - Ivan Merelli
- Institute of Biomedical Technologies, National Research Council (CNR), Segrate (Mi), Italy
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Yang L, Tseng YT, Suo G, Chen L, Yu J, Chiu WJ, Huang CC, Lin CH. Photothermal therapeutic response of cancer cells to aptamer-gold nanoparticle-hybridized graphene oxide under NIR illumination. ACS Appl Mater Interfaces 2015; 7:5097-5106. [PMID: 25705789 DOI: 10.1021/am508117e] [Citation(s) in RCA: 137] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The objective of this study was to synthesize a nanocomposite, aptamer-gold nanoparticle-hybridized graphene oxide (Apt-AuNP-GO), to facilitate targeted treatment of tumor cells by near-infrared (NIR) light-activatable photothermal therapy. We also investigated whether Apt-AuNP-GO with NIR illumination modulates heat shock proteins (HSPs) expression leading to therapeutic response in human breast cancer cells. These findings can provide strategies for improving the photothermal therapy efficacy of cancer. The self-assembled Apt-AuNP-GO nanocomposite could selectively target MUC1-positive human breast cancer cells (MCF-7) due to the specific interaction between the MUC1-binding-aptamer and the MUC1 (type I transmembrane mucin glycoprotein) on cell membrane. In addition, Apt-AuNP-GO has a high light-to-heat conversion capability for photoabsorption of NIR light, and it is able to exert therapeutic effects on MCF-7 cells at an ultralow concentration without inducing adverse effects in healthy cells. The Apt-AuNP-GO nanocomposites combine the advantages of GOs, AuNPs, and Apts, possess specific targeting capability, excellent biocompatibility, and tumor cell destruction ability, suggesting great potential for application in the photothermal therapy of breast cancer. Under NIR illumination, Apt-AuNP-GO induced transient increase in HSP70 expression, which decreased thereafter. This phenomenon may cause irreversible damage to Apt-AuNP-GO-treated MCF-7 cell under NIR illumination. We also demonstrated that the combination therapy of heat and HSP70 inhibitor could synergistically generate marked tumoricidal effects against breast cancer. These results suggest that the degree and duration of HSP70 protein expression are correlated with therapeutic effects against breast cancer for Apt-AuNP-GO-assisted photothermal therapy. We believe that such a nanocomposite can be readily extended to the construction of HSP70 inhibitors-loaded Apt-AuNP-GO, which could deliver both heat and HSP70 inhibitors to tumorigenic regions for the chemo-photothermal therapy.
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Affiliation(s)
- Lingyan Yang
- Key Laboratory of Nano-Bio Interface, Suzhou Key Laboratory for Nanotheranostics, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, China
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Posimo JM, Weilnau JN, Gleixner AM, Broeren MT, Weiland NL, Brodsky JL, Wipf P, Leak RK. Heat shock protein defenses in the neocortex and allocortex of the telencephalon. Neurobiol Aging 2015; 36:1924-37. [PMID: 25771395 DOI: 10.1016/j.neurobiolaging.2015.02.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 01/30/2015] [Accepted: 02/11/2015] [Indexed: 11/18/2022]
Abstract
The telencephalic allocortex develops protein inclusions before the neocortex in many age-related proteinopathies. One major defense mechanism against proteinopathic stress is the heat shock protein (Hsp) network. We therefore contrasted Hsp defenses in stressed primary neocortical and allocortical cells. Neocortical neurons were more resistant to the proteasome inhibitor MG132 than neurons from 3 allocortical subregions: entorhinal cortex, piriform cortex, and hippocampus. However, allocortical neurons exhibited higher MG132-induced increases in Hsp70 and heat shock cognate 70 (Hsc70). MG132-treated allocortical neurons also exhibited greater levels of protein ubiquitination. Inhibition of Hsp70/Hsc70 activity synergistically exacerbated MG132 toxicity in allocortical neurons more than neocortical neurons, suggesting that the allocortex is more reliant on these Hsp defenses. In contrast, astrocytes harvested from the neocortex or allocortex did not differ in their response to Hsp70/Hsc70 inhibition. Consistent with the idea that chaperones are maximally engaged in allocortical neurons, an increase in Hsp70/Hsc70 activity was protective only in neocortical neurons. Finally, the levels of select Hsps were altered in the neocortex and allocortex in vivo with aging.
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Affiliation(s)
- Jessica M Posimo
- Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA, USA
| | - Justin N Weilnau
- Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA, USA
| | - Amanda M Gleixner
- Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA, USA
| | - Matthew T Broeren
- Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA, USA
| | - Nicole L Weiland
- Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA, USA
| | - Jeffrey L Brodsky
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Peter Wipf
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, USA; Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Rehana K Leak
- Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA, USA.
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Kleszczyński K, Zwicker S, Tukaj S, Kasperkiewicz M, Zillikens D, Wolf R, Fischer TW. Melatonin compensates silencing of heat shock protein 70 and suppresses ultraviolet radiation-induced inflammation in human skin ex vivo and cultured keratinocytes. J Pineal Res 2015; 58:117-26. [PMID: 25424643 DOI: 10.1111/jpi.12197] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 11/21/2014] [Indexed: 12/25/2022]
Abstract
Melatonin, a lipophilic compound synthesized and released from the pineal gland, effectively acts against ultraviolet radiation (UVR), one of the main inducers of epidermal damage, skin cancer, inflammation, and DNA photo damage. One of the common known stress protein induced by UVR is heat shock protein 70 (Hsp70), highly expressed in human keratinocytes, providing cellular resistance to such stressors. Here, using human full-thickness skin and normal human epidermal keratinocytes (NHEK), we investigated the interaction of melatonin and Hsp70 toward UVR-induced inflammatory and apoptotic responses. The following observations were made: (i) UVR upregulated Hsp70 gene expression in human epidermis while melatonin significantly inverted this effect, (ii) similar patterns of regulation were observed within Hsp70 protein level, and (iii) mechanistic studies involving silencing of Hsp70 RNA (Hsp70 siRNA) showed prominent decrease of IκB-α (an inhibitor of NF-κB) and enhanced gene expression of pro-inflammatory cytokines (IL-1β, IL-6, Casp-1) and pro-apoptotic protein (Casp-3) in NHEK. Parallel investigation using melatonin (10(-3) m) significantly inverted these responses regardless depletion of Hsp70 RNA suggesting a compensatory action of this compound in the defense mechanisms. Our findings combined with data reported so far thus enrich existing knowledge about the potent anti-apoptotic and anti-inflammatory action of melatonin.
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ZhiQing Z, XinXing W, Jingbo G, Rui Z, Xiujie G, Yun Z, Lei W, Xue L, LingJia Q. Effects of HIP in protection of HSP70 for stress-induced cardiomyocytes injury and its glucorticoid receptor pathway. Cell Stress Chaperones 2014; 19:865-75. [PMID: 24789270 PMCID: PMC4389846 DOI: 10.1007/s12192-014-0510-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 03/26/2014] [Accepted: 03/27/2014] [Indexed: 01/16/2023] Open
Abstract
Moderate levels of stress can be beneficial to health, while stress overload can cause injury or contribute to diseases. Despite a number of studies of adaptation or stress damage, the mechanisms of adaptation and stress damage remain far from clear. The effect and mechanisms of adaptation on cardiomyocytes damage caused by stress overload are discussed in this study. Data showed that mild repeated stress mitigated stress overload-induced cardiomyocyte injury both in an animal model of restraint stress and in H9C2 cells with GC (glucocorticoid) treatment. HSP70, HIP expression and interaction between HSP70 and HIP increased during adaptation induced by mild stress both in animals and H9C2 cells. Overexpression or inhibition of HSP70 in H9C2 cells with pCDNA-3.1-Hsp70 or KNK437 (HSP70 inhibitor) showed that HSP70 can protect H9C2 cells from GC-induced cell damage. A luciferase assay showed that Hsp70 plays its protective role through inhibition of GR transcription activity dependent on the interaction with HIP. These results indicated that HSP70 may promote adaptation with its interacting protein HIP, and increased levels of HSP70 and its interacting protein HIP during adaptation may play a protective role on stress-overload-induced cardiomyocyte injury.
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MESH Headings
- Adaptation, Physiological
- Animals
- Benzhydryl Compounds/pharmacology
- Cell Line
- Disease Models, Animal
- Glucocorticoids/toxicity
- HSP70 Heat-Shock Proteins/antagonists & inhibitors
- HSP70 Heat-Shock Proteins/genetics
- HSP70 Heat-Shock Proteins/metabolism
- Heart Diseases/genetics
- Heart Diseases/metabolism
- Heart Diseases/pathology
- Heart Diseases/prevention & control
- Hydrocortisone/blood
- Male
- Molecular Chaperones/genetics
- Molecular Chaperones/metabolism
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- Pyrrolidinones/pharmacology
- RNA Interference
- Rats, Wistar
- Receptors, Glucocorticoid/agonists
- Receptors, Glucocorticoid/genetics
- Receptors, Glucocorticoid/metabolism
- Restraint, Physical
- Signal Transduction/drug effects
- Stress, Psychological/complications
- Stress, Psychological/genetics
- Stress, Psychological/metabolism
- Stress, Psychological/pathology
- Time Factors
- Transfection
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Affiliation(s)
- Zhang ZhiQing
- />Institute of Health & Environmental Medicine, Tianjin, 300050 People’s Republic of China
| | - Wang XinXing
- />Institute of Basic Medical Sciences, Beijing, 100850 People’s Republic of China
| | - Gong Jingbo
- />Institute of Basic Medical Sciences, Beijing, 100850 People’s Republic of China
| | - Zhan Rui
- />Institute of Basic Medical Sciences, Beijing, 100850 People’s Republic of China
| | - Gao Xiujie
- />Institute of Health & Environmental Medicine, Tianjin, 300050 People’s Republic of China
| | - Zhao Yun
- />Institute of Basic Medical Sciences, Beijing, 100850 People’s Republic of China
| | - Wu Lei
- />Institute of Health & Environmental Medicine, Tianjin, 300050 People’s Republic of China
| | - Leng Xue
- />Institute of Medical Equipment, Tianjin, 300161 People’s Republic of China
| | - Qian LingJia
- />Institute of Basic Medical Sciences, Beijing, 100850 People’s Republic of China
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Bianchi A, Moulin D, Hupont S, Koufany M, Netter P, Reboul P, Jouzeau JY. Oxidative stress-induced expression of HSP70 contributes to the inhibitory effect of 15d-PGJ2 on inducible prostaglandin pathway in chondrocytes. Free Radic Biol Med 2014; 76:114-26. [PMID: 25106704 DOI: 10.1016/j.freeradbiomed.2014.07.028] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 07/02/2014] [Accepted: 07/21/2014] [Indexed: 02/04/2023]
Abstract
The inhibitory effect of 15-deoxy-Δ(12,14)-prostaglandin J2 (15d-PGJ2) on proinflammatory gene expression has been extensively documented and frequently ascribed to its ability to prevent NF-κB pathway activation. We and others have previously demonstrated that it was frequently independent of the peroxisome proliferator activated receptor (PPAR)γ activation. Here, we provide evidence that induction of intracellular heat shock protein (HSP)70 by oxidative stress is an additional regulatory loop supporting the anti-inflammatory effect of 15d-PGJ2 in chondrocytes. Using real-time quantitative PCR and Western blotting, we showed that 15d-PGJ2 stimulated HSP70, but not HSP27 expression while increasing oxidative stress as measured by spectrofluorimetry and confocal spectral imaging. Using N-acetylcysteine (NAC) as an antioxidant, we demonstrated further that oxidative stress was thoroughly responsible for the increased expression of HSP70. Finally, using an HSP70 antisense strategy, we showed that the inhibitory effect of 15d-PGJ2 on IL-1-induced activation of the NF-κB pathway, COX-2 and mPGES-1 expression, and PGE2 synthesis was partly supported by HSP70. These data provide a new anti-inflammatory mechanism to support the PPARγ-independent effect of 15d-PGJ2 in chondrocyte and suggest a possible feedback regulatory loop between oxidative stress and inflammation via intracellular HSP70 up-regulation. This cross talk is consistent with 15d-PGJ2 as a putative negative regulator of the inflammatory reaction.
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Affiliation(s)
- A Bianchi
- UMR 7365 CNRS-Université de Lorraine, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), Biopôle de l'Université de Lorraine, Campus Biologie-Santé, 9 Avenue de la forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy, France.
| | - D Moulin
- UMR 7365 CNRS-Université de Lorraine, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), Biopôle de l'Université de Lorraine, Campus Biologie-Santé, 9 Avenue de la forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy, France
| | - S Hupont
- Plateforme d׳Imagerie Cellulaire et Tissulaire PTIBC-IBISA, FR3209 CNRS-INSERM-Université de Lorraine Bio-ingénierie Moléculaire, Cellulaire et Thérapeutique (BMCT), Biopôle de l'Université de Lorraine, Campus Biologie-Santé, Vandœuvre-lès-Nancy, France
| | - M Koufany
- UMR 7365 CNRS-Université de Lorraine, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), Biopôle de l'Université de Lorraine, Campus Biologie-Santé, 9 Avenue de la forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy, France
| | - P Netter
- UMR 7365 CNRS-Université de Lorraine, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), Biopôle de l'Université de Lorraine, Campus Biologie-Santé, 9 Avenue de la forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy, France; Département de Pharmacologie Clinique et Toxicologie, Hôpital Central, CHU de Nancy, France
| | - P Reboul
- UMR 7365 CNRS-Université de Lorraine, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), Biopôle de l'Université de Lorraine, Campus Biologie-Santé, 9 Avenue de la forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy, France
| | - J-Y Jouzeau
- UMR 7365 CNRS-Université de Lorraine, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), Biopôle de l'Université de Lorraine, Campus Biologie-Santé, 9 Avenue de la forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy, France; Département de Pharmacologie Clinique et Toxicologie, Hôpital Central, CHU de Nancy, France.
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Kadara H, Lacroix L, Lotan D, Lotan R. Induction of endoplasmic reticulum stress by the pro-apoptotic retinoid N-(4-Hydroxyphenyl)retinamide via a reactive oxygen species-dependent mechanism in human head and neck cancer cells. Cancer Biol Ther 2014; 6:705-11. [PMID: 17404501 DOI: 10.4161/cbt.6.5.3963] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
N-(4-hydroxyphenyl)retinamide (4HPR), which has shown efficacy in cancer chemopreventionand therapy, induces the mitochondrial apoptosis pathway via increased generation of reactive oxygen species (ROS). ROS is also known to be able to induce an endoplasmic reticulum (ER) stress response, which can contribute to apoptosis but may also antagonize it. Therefore, we used human head and neck squamous cell carcinoma (HNSCC) cells to determine whether 4HPR affects ER stress. Different experimental approaches have indicated that 4HPR induces ER stress response: electron microscopy, which showed extensive ER dilation; splicing of the X-box binding protein 1 (XBP-1), a marker of unfolded protein response (UPR) activation; and quantitative real-time PCR and immunoblotting, which revealed the upregulation of several ER-stress associated mRNAs and proteins, including the chaperone heat shock protein HSPA1A. Most of these effects of 4HPR were abrogated by cotreatment of cells with the antioxidant 3-tert-butyl-4-hydroxyanisole (BHA) indicating that they were downstream of the increase in ROS. Furthermore, siRNA-mediated silencing and chemical inhibition of HSPA1A, which exerts either pro- or anti-apoptotic effects, decreased 4HPR-induced apoptosis. These results demonstrate that 4HPR induces ER stress and uncovered a pro-apoptotic role for HSPA1A in 4HPR-induced apoptosis.
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Affiliation(s)
- Humam Kadara
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
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Kim SH, Kang JG, Kim CS, Ihm SH, Choi MG, Yoo HJ, Lee SJ. Hsp70 inhibition potentiates radicicol-induced cell death in anaplastic thyroid carcinoma cells. Anticancer Res 2014; 34:4829-4837. [PMID: 25202064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND/AIM The aim of the present study was to evaluate the effect of radicicol, an inhibitor of heat shock protein (hsp) 90, alone or in combination with hsp70 inhibition on survival of anaplastic thyroid carcinoma (ATC) cells. MATERIALS AND METHODS Antitumor activity of radicicol-alone or in combination with the hsp70 inhibitor VER155008 was investigated in 8505C and CAL62 cells. RESULTS Radicicol decreased cell viability and Akt protein levels, and increased the percentage of dead cells and hsp70 protein levels. In PIK3CA plasmid-transfected cells, compared to cells treated with radicicol-alone, cell viability increased and cellular death decreased. In cells treated with both radicicol and VER155008, compared to cells treated with radicicol-alone, cell viability further decreased and the percentage of dead cells further increased, with a parallel decrease of the protein levels of heat shock cognate 70, Akt and survivin. CONCLUSION Our results suggest that radicicol induces cell death mediated through PI3K/Akt signaling with modulation of hsp90 client proteins and hsp70 inhibition enhances radicicol-induced cell death with suppression of survivin in ATC cells.
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Affiliation(s)
- Si Hyoung Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Hallym University, Chuncheon, Republic of Korea
| | - Jun Goo Kang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Hallym University, Chuncheon, Republic of Korea
| | - Chul Sik Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Hallym University, Chuncheon, Republic of Korea
| | - Sung-Hee Ihm
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Hallym University, Chuncheon, Republic of Korea
| | - Moon Gi Choi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Hallym University, Chuncheon, Republic of Korea
| | - Hyung Joon Yoo
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Hallym University, Chuncheon, Republic of Korea
| | - Seong Jin Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Hallym University, Chuncheon, Republic of Korea
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