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Halilovic M, Marx-Blümel L, Marx C, Buder K, Beck JF, Sonnemann J. Assessment of HDAC Inhibitor-Induced Endoplasmic Reticulum (ER) Stress. Methods Mol Biol 2023; 2589:253-268. [PMID: 36255630 DOI: 10.1007/978-1-0716-2788-4_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The endoplasmic reticulum (ER) is a multifunctional cell organelle which is important for the folding and processing of proteins. Different endogenous and exogenous factors can disturb the ER homeostasis, causing ER stress and activating the unfolded protein response (UPR) to remove misfolded proteins and aggregates. ER stress and the UPR are associated with several human diseases, such as diabetes, Alzheimer's or Parkinson's disease, and cancer. Histone deacetylase inhibitors (HDACi) are used to treat cancer and were shown to induce ER stress/to modulate the UPR, although the exact mechanism is not fully understood and needs further research. Several approaches to monitoring ER stress exist. Here we describe methods including qPCR, Western blot, transmission electron microscopy, and fluorescence microscopy to analyze changes in mRNA and protein expression levels as well as defects in ER structures after HDAC inhibitor-induced ER stress.
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Affiliation(s)
- Melisa Halilovic
- Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Jena, Germany
| | - Lisa Marx-Blümel
- Department of Pediatric Hematology and Oncology, Children's Clinic, Jena University Hospital, Jena, Germany
- Research Center Lobeda, Jena University Hospital, Jena, Germany
| | - Christian Marx
- Center for Pandemic Vaccines and Therapeutics (ZEPAI), Paul Ehrlich Institute (PEI), Langen, Germany
| | - Katrin Buder
- Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Jena, Germany
| | - James F Beck
- Department of Pediatric Hematology and Oncology, Children's Clinic, Jena University Hospital, Jena, Germany
| | - Jürgen Sonnemann
- Department of Pediatric Hematology and Oncology, Children's Clinic, Jena University Hospital, Jena, Germany.
- Research Center Lobeda, Jena University Hospital, Jena, Germany.
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2
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Celesia A, Notaro A, Franzò M, Lauricella M, D’Anneo A, Carlisi D, Giuliano M, Emanuele S. The Histone Deacetylase Inhibitor ITF2357 (Givinostat) Targets Oncogenic BRAF in Melanoma Cells and Promotes a Switch from Pro-Survival Autophagy to Apoptosis. Biomedicines 2022; 10:biomedicines10081994. [PMID: 36009541 PMCID: PMC9405675 DOI: 10.3390/biomedicines10081994] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/09/2022] [Accepted: 08/12/2022] [Indexed: 11/16/2022] Open
Abstract
Histone deacetylase inhibitors (HDACI) are epigenetic compounds that have been widely considered very promising antitumor agents. Here, we focus on the effects of the pan-HDAC inhibitor ITF2357 (Givinostat) in comparison with SAHA (Vorinostat) in melanoma cells bearing BRAF V600E oncogenic mutation. Our results indicate both ITF2357 and SAHA dose-dependently reduce the viability of BRAF-mutated SK-MEL-28 and A375 melanoma cells. The comparison of IC50 values revealed that ITF2357 was much more effective than SAHA. Interestingly, both inhibitors markedly decreased oncogenic BRAF protein expression levels, ITF2357 being the most effective compound. Moreover, the BRAF decrease induced by ITF2357 was accompanied by a decrease in the level of phospho-ERK1/2. The inhibitor of upstream MEK activity, U0126, reduced ERK1/2 phosphorylation and dramatically potentiated the antitumor effect of ITF2357, exacerbating the reduction in the BRAF level. ITF2357 stimulated an early pro-survival autophagic response, which was followed by apoptosis, as indicated by apoptotic markers evaluation and the protective effects exerted by the pan-caspase inhibitor z-VADfmk. Overall, our data indicate for the first time that ITF2357 targets oncogenic BRAF in melanoma cells and induces a switch from autophagy to classic apoptosis, thus representing a possible candidate in melanoma targeted therapy.
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Affiliation(s)
- Adriana Celesia
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Biochemistry Building, University of Palermo, 90127 Palermo, Italy
| | - Antonietta Notaro
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), Laboratory of Biochemistry, University of Palermo, 90127 Palermo, Italy
| | - Marzia Franzò
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Biochemistry Building, University of Palermo, 90127 Palermo, Italy
| | - Marianna Lauricella
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Biochemistry Building, University of Palermo, 90127 Palermo, Italy
| | - Antonella D’Anneo
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), Laboratory of Biochemistry, University of Palermo, 90127 Palermo, Italy
| | - Daniela Carlisi
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Biochemistry Building, University of Palermo, 90127 Palermo, Italy
| | - Michela Giuliano
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), Laboratory of Biochemistry, University of Palermo, 90127 Palermo, Italy
- Correspondence: (M.G.); (S.E.)
| | - Sonia Emanuele
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), Biochemistry Building, University of Palermo, 90127 Palermo, Italy
- Correspondence: (M.G.); (S.E.)
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3
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Almeida-Silva J, Menezes DS, Fernandes JMP, Almeida MC, Vasco-Dos-Santos DR, Saraiva RM, Viçosa AL, Perez SAC, Andrade SG, Suarez-Fontes AM, Vannier-Santos MA. The repositioned drugs disulfiram/diethyldithiocarbamate combined to benznidazole: Searching for Chagas disease selective therapy, preventing toxicity and drug resistance. Front Cell Infect Microbiol 2022; 12:926699. [PMID: 35967878 PMCID: PMC9372510 DOI: 10.3389/fcimb.2022.926699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 06/27/2022] [Indexed: 12/20/2022] Open
Abstract
Chagas disease (CD) affects at least 6 million people in 21 South American countries besides several thousand in other nations all over the world. It is estimated that at least 14,000 people die every year of CD. Since vaccines are not available, chemotherapy remains of pivotal relevance. About 30% of the treated patients cannot complete the therapy because of severe adverse reactions. Thus, the search for novel drugs is required. Here we tested the benznidazole (BZ) combination with the repositioned drug disulfiram (DSF) and its derivative diethyldithiocarbamate (DETC) upon Trypanosoma cruzi in vitro and in vivo. DETC-BZ combination was synergistic diminishing epimastigote proliferation and enhancing selective indexes up to over 10-fold. DETC was effective upon amastigotes of the BZ- partially resistant Y and the BZ-resistant Colombiana strains. The combination reduced proliferation even using low concentrations (e.g., 2.5 µM). Scanning electron microscopy revealed membrane discontinuities and cell body volume reduction. Transmission electron microscopy revealed remarkable enlargement of endoplasmic reticulum cisternae besides, dilated mitochondria with decreased electron density and disorganized kinetoplast DNA. At advanced stages, the cytoplasm vacuolation apparently impaired compartmentation. The fluorescent probe H2-DCFDA indicates the increased production of reactive oxygen species associated with enhanced lipid peroxidation in parasites incubated with DETC. The biochemical measurement indicates the downmodulation of thiol expression. DETC inhibited superoxide dismutase activity on parasites was more pronounced than in infected mice. In order to approach the DETC effects on intracellular infection, peritoneal macrophages were infected with Colombiana trypomastigotes. DETC addition diminished parasite numbers and the DETC-BZ combination was effective, despite the low concentrations used. In the murine infection, the combination significantly enhanced animal survival, decreasing parasitemia over BZ. Histopathology revealed that low doses of BZ-treated animals presented myocardial amastigote, not observed in combination-treated animals. The picrosirius collagen staining showed reduced myocardial fibrosis. Aminotransferase de aspartate, Aminotransferase de alanine, Creatine kinase, and urea plasma levels demonstrated that the combination was non-toxic. As DSF and DETC can reduce the toxicity of other drugs and resistance phenotypes, such a combination may be safe and effective.
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Affiliation(s)
- Juliana Almeida-Silva
- Innovations in Therapies, Education and Bioproducts Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Diego Silva Menezes
- Parasite Biology Laboratory, Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, BA, Brazil
| | - Juan Mateus Pereira Fernandes
- Innovations in Therapies, Education and Bioproducts Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Márcio Cerqueira Almeida
- Parasite Biology Laboratory, Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, BA, Brazil
| | - Deyvison Rhuan Vasco-Dos-Santos
- Innovations in Therapies, Education and Bioproducts Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Roberto Magalhães Saraiva
- Laboratory of Clinical Research on Chagas Disease, Evandro Chagas Infectious Disease Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Alessandra Lifsitch Viçosa
- Experimental Pharmacotechnics Laboratory, Department of Galenic Innovation, Institute of Drug Technology - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Sandra Aurora Chavez Perez
- Project Management Technical Assistance, Institute of Drug Technology - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Sônia Gumes Andrade
- Experimental Chagas Disease Laboratory, Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, BA, Brazil
| | - Ana Márcia Suarez-Fontes
- Innovations in Therapies, Education and Bioproducts Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Marcos André Vannier-Santos
- Innovations in Therapies, Education and Bioproducts Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
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4
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Alseksek RK, Ramadan WS, Saleh E, El-Awady R. The Role of HDACs in the Response of Cancer Cells to Cellular Stress and the Potential for Therapeutic Intervention. Int J Mol Sci 2022; 23:8141. [PMID: 35897717 PMCID: PMC9331760 DOI: 10.3390/ijms23158141] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 02/01/2023] Open
Abstract
Throughout the process of carcinogenesis, cancer cells develop intricate networks to adapt to a variety of stressful conditions including DNA damage, nutrient deprivation, and hypoxia. These molecular networks encounter genomic instability and mutations coupled with changes in the gene expression programs due to genetic and epigenetic alterations. Histone deacetylases (HDACs) are important modulators of the epigenetic constitution of cancer cells. It has become increasingly known that HDACs have the capacity to regulate various cellular systems through the deacetylation of histone and bounteous nonhistone proteins that are rooted in complex pathways in cancer cells to evade death pathways and immune surveillance. Elucidation of the signaling pathways involved in the adaptive responses to cellular stress and the role of HDACs may lead to the development of novel therapeutic agents. In this article, we overview the dominant stress types including metabolic, oxidative, genotoxic, and proteotoxic stress imposed on cancer cells in the context of HDACs, which guide stress adaptation responses. Next, we expose a closer view on the therapeutic interventions and clinical trials that involve HDACs inhibitors, in addition to highlighting the impact of using HDAC inhibitors in combination with stress-inducing agents for the management of cancer and to overcome the resistance to current cancer therapy.
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Affiliation(s)
- Rahma K. Alseksek
- College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates;
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Wafaa S. Ramadan
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Ekram Saleh
- Clinical Biochemistry and Molecular Biology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo 12613, Egypt;
| | - Raafat El-Awady
- College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates;
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
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5
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Thai SF, Jones CP, Robinette BL, Ren H, Vallant B, Fisher A, Kitchin KT. Effects of Copper Nanoparticles on mRNA and Small RNA Expression in Human Hepatocellular Carcinoma (HepG2) Cells. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:5083-5098. [PMID: 33875094 PMCID: PMC10803003 DOI: 10.1166/jnn.2021.19328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
With the advancement of nanotechnology, nanoparticles are widely used in many different industrial processes and consumer products. Copper nanoparticles (Cu NPs) are among the most toxic nanomaterials. We investigated Cu NPs toxicity in Human Hepatocellular carcinoma (HepG2) cells by examining signaling pathways, and microRNA/mRNA interactions. We compared the effects of exposures to Cu NPs at various concentrations and CuCl₂ was used as a control. The number of differentially expressed mRNA did not follow a linear dose-response relationship for either Cu NPs or CuCl₂ treatments. The most significantly altered genes and pathways by Cu NPs exposure were NRF2 (nuclear factor erythroid 2 related factor 2)-mediated oxidative stress response, protein ubiquitination, Tumor protein p53 (p53), phase I and II metabolizing enzymes, antioxidant proteins and phase III detoxifying gene pathways.Messenger RNA-microRNA interaction from MicroRNA Target Filter Analyses revealed more signaling pathways altered in Cu NPs treated samples than transcriptomics alone, including cell proliferation, DNA methylation, endoplasmic reticulum (ER) stress, apoptosis, autophagy, reactive oxygen species, inflammation, tumorigenesis, extracellular matrix/angiogenesis and protein synthesis. In contrast, in the control (CuCl₂) treated samples showed mostly changes in inflammation mainly through regulation of the Nuclear Factor Kappa-light-chain-enhancer of Activated B-cells (NFκB). Further, some RNA based parameters that showed promise as biomarkers of Cu NPs exposure including both well and lesser known genes: heme oxygenase 1 (HMOX1), heat shock protein, c-Fos proto-oncogene, DNA methyltransferases, and glutamate-cysteine ligase modifier subunit (GCLM, part of the glutathione synthesis pathway). The differences in signaling pathways altered by the Cu NPs and CuCl₂ treatments suggest that the effects of the Cu NPs were not the results of nanomaterial dissolution to soluble copper ions.
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Affiliation(s)
- Sheau-Fung Thai
- Center for Computational Toxicology and Exposure, US Environmental Protection Agency, 109 TW Alexander Dr., Durham NC 27709, USA
| | - Carlton P Jones
- Center for Computational Toxicology and Exposure, US Environmental Protection Agency, 109 TW Alexander Dr., Durham NC 27709, USA
| | - Brian L Robinette
- Center for Computational Toxicology and Exposure, US Environmental Protection Agency, 109 TW Alexander Dr., Durham NC 27709, USA
| | - Hongzu Ren
- Center for Public Health and Environmental Assessment, US Environmental Production Agency, 109 TW Alexander Dr., Durham NC 27709, USA
| | - Beena Vallant
- Center for Computational Toxicology and Exposure, US Environmental Protection Agency, 109 TW Alexander Dr., Durham NC 27709, USA
| | - Anna Fisher
- Center for Public Health and Environmental Assessment, US Environmental Production Agency, 109 TW Alexander Dr., Durham NC 27709, USA
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6
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Mandula JK, Rodriguez PC. Tumor-related stress regulates functional plasticity of MDSCs. Cell Immunol 2021; 363:104312. [PMID: 33652258 PMCID: PMC8026602 DOI: 10.1016/j.cellimm.2021.104312] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/15/2021] [Accepted: 01/29/2021] [Indexed: 12/15/2022]
Abstract
Myeloid-derived suppressor cells (MDSCs) impair protective anti-tumor immunity and remain major obstacles that stymie the effectiveness of promising cancer therapies. Diverse tumor-derived stressors galvanize the differentiation, intra-tumoral expansion, and immunomodulatory function of MDSCs. These tumor-associated 'axes of stress' underwrite the immunosuppressive programming of MDSCs in cancer and contribute to the phenotypic/functional heterogeneity that characterize tumor-MDSCs. This review discusses various tumor-associated axes of stress that direct MDSC development, accumulation, and immunosuppressive function, as well as current strategies aimed at overcoming the detrimental impact of MDSCs in cancer. To better understand the constellation of signals directing MDSC biology, we herein summarize the pivotal roles, signaling mediators, and effects of reactive oxygen/nitrogen species-related stress, chronic inflammatory stress, hypoxia-linked stress, endoplasmic reticulum stress, metabolic stress, and therapy-associated stress on MDSCs. Although therapeutic targeting of these processes remains mostly pre-clinical, intercepting signaling through the axes of stress could overcome MDSC-related immune suppression in tumor-bearing hosts.
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Affiliation(s)
- Jessica K Mandula
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Paulo C Rodriguez
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA.
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7
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Russell JJ, Grisanti LA, Brown SM, Bailey CA, Bender SB, Chandrasekar B. Reversion inducing cysteine rich protein with Kazal motifs and cardiovascular diseases: The RECKlessness of adverse remodeling. Cell Signal 2021; 83:109993. [PMID: 33781845 DOI: 10.1016/j.cellsig.2021.109993] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 12/19/2022]
Abstract
The Reversion Inducing Cysteine Rich Protein With Kazal Motifs (RECK) is a glycosylphosphatidylinositol (GPI) anchored membrane-bound regulator of matrix metalloproteinases (MMPs). It is expressed throughout the body and plays a role in extracellular matrix (ECM) homeostasis and inflammation. In initial studies, RECK expression was found to be downregulated in various invasive cancers and associated with poor prognostic outcome. Restoring RECK, however, has been shown to reverse the metastatic phenotype. Downregulation of RECK expression is also reported in non-malignant diseases, such as periodontal disease, renal fibrosis, and myocardial fibrosis. As such, RECK induction has therapeutic potential in several chronic diseases. Mechanistically, RECK negatively regulates various matrixins involved in cell migration, proliferation, and adverse remodeling by targeting the expression and/or activation of multiple MMPs, A Disintegrin And Metalloproteinase Domain-Containing Proteins (ADAMs), and A Disintegrin And Metalloproteinase With Thrombospondin Motifs (ADAMTS). Outside of its role in remodeling, RECK has also been reported to exert anti-inflammatory effects. In cardiac diseases, for example, it has been shown to counteract several downstream effectors of Angiotensin II (Ang-II) that play a role in adverse cardiac and vascular remodeling, such as Interleukin-6 (IL-6)/IL-6 receptor (IL-6R)/glycoprotein 130 (IL-6 signal transducer) signaling and Epidermal Growth Factor Receptor (EGFR) transactivation. This review article focuses on the current understanding of the multifunctional effects of RECK and how its downregulation may contribute to adverse cardiovascular remodeling.
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Affiliation(s)
- Jacob J Russell
- Biomedical Sciences, University of Missouri, Columbia, MO, United States of America; Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States of America.
| | - Laurel A Grisanti
- Biomedical Sciences, University of Missouri, Columbia, MO, United States of America.
| | - Scott M Brown
- Biomedical Sciences, University of Missouri, Columbia, MO, United States of America; Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States of America.
| | - Chastidy A Bailey
- Biomedical Sciences, University of Missouri, Columbia, MO, United States of America; Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States of America.
| | - Shawn B Bender
- Biomedical Sciences, University of Missouri, Columbia, MO, United States of America; Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States of America; Dalton Cardiovascular Center, University of Missouri, Columbia, MO, United States of America.
| | - B Chandrasekar
- Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States of America; Medicine, University of Missouri School of Medicine, Columbia, MO, United States of America; Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, United States of America; Dalton Cardiovascular Center, University of Missouri, Columbia, MO, United States of America.
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8
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Dashek RJ, Diaz C, Chandrasekar B, Rector RS. The Role of RECK in Hepatobiliary Neoplasia Reveals Its Therapeutic Potential in NASH. Front Endocrinol (Lausanne) 2021; 12:770740. [PMID: 34745017 PMCID: PMC8564138 DOI: 10.3389/fendo.2021.770740] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 10/04/2021] [Indexed: 12/12/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a multimorbidity disorder ranging from excess accumulation of fat in the liver (steatosis) to steatohepatitis (NASH) and end-stage cirrhosis, and the development of hepatocellular carcinoma (HCC) in a subset of patients. The defining features of NASH are inflammation and progressive fibrosis. Currently, no pharmaceutical therapies are available for NAFLD, NASH and HCC; therefore, developing novel treatment strategies is desperately needed. Reversion Inducing Cysteine Rich Protein with Kazal motifs (RECK) is a well-known modifier of the extracellular matrix in hepatic remodeling and transition to HCC. More recently, its role in regulating inflammatory and fibrogenic processes has emerged. Here, we summarize the most relevant findings that extend our current understanding of RECK as a regulator of inflammation and fibrosis, and its induction as a potential strategy to blunt the development and progression of NASH and HCC.
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Affiliation(s)
- Ryan J. Dashek
- Research Service, Harry S. Truman Memorial Veterans’ Hospital, Columbia, MO, United States
- Comparative Medicine Program, Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, United States
| | - Connor Diaz
- School of Medicine, University of Missouri, Columbia, MO, United States
| | - Bysani Chandrasekar
- Research Service, Harry S. Truman Memorial Veterans’ Hospital, Columbia, MO, United States
- Division of Cardiology, Department of Medicine, University of Missouri, Columbia, MO, United States
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, United States
| | - R. Scott Rector
- Research Service, Harry S. Truman Memorial Veterans’ Hospital, Columbia, MO, United States
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Missouri, Columbia, MO, United States
- *Correspondence: R. Scott Rector,
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9
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Sun X, Sun Y, Lin S, Xu Y, Zhao D. Histone deacetylase inhibitor valproic acid attenuates high glucose‑induced endoplasmic reticulum stress and apoptosis in NRK‑52E cells. Mol Med Rep 2020; 22:4041-4047. [PMID: 32901855 DOI: 10.3892/mmr.2020.11496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 04/15/2020] [Indexed: 11/05/2022] Open
Abstract
Previous studies have demonstrated that valproic acid (VPA), a histone deacetylase inhibitor, alleviates diabetic nephropathy (DN). However, the biological mechanisms underlying this protective effect remains unclear. This study aimed to investigate the effects of histone deacetylase inhibitor VPA on hyperglycemic induction of NRK‑52E cell ERS and apoptosis. Endoplasmic reticulum stress (ERS)‑related apoptosis is involved in DN, and improving ERS may delay the symptoms of DN. Histone deacetylase regulates gene transcription or expression of ERS‑related proteins. The present study established an ERS model by treating the rat renal tubular epithelial cells NRK‑52E with high glucose (HG) and investigated the effects of VPA on the apoptosis of the NRK‑52E cells. HG stimulation significantly increased the protein levels of the ERS‑related proteins including glucose regulated protein 78 (GRP78), activating transcription factor 4 (ATF4), C/EBP homologous protein (CHOP), caspase‑12 and phosphorylated (p)‑JNK. VPA treatment further upregulated GRP78 expression and attenuated the levels of ATF4, CHOP, caspase‑12 and p‑JNK. Notably, HG markedly promoted apoptosis of NRK‑52E cells by regulating the protein levels of Bax, cleaved caspase‑3 and Bcl‑2, which was attenuated by simultaneous VPA treatment. Mechanistically, VPA increased the total acetylation levels of histone H4 in NRK‑52E cells and increased the histone H4 acetylation of the GRP78 promoter region. In conclusion, VPA attenuated HG‑induced ERS and apoptosis in NRK‑52E cells, which may be due to the regulation of acetylation levels of ERS‑related proteins. In addition, the present study suggested that HDACIs are promising drugs for treating patients with DN.
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Affiliation(s)
- Xinyi Sun
- Endocrine Department, Affiliated Hospital of Beihua University, Chuanying, Jilin 132011, P.R. China
| | - Yuman Sun
- Endocrine Department, Affiliated Hospital of Beihua University, Chuanying, Jilin 132011, P.R. China
| | - Sitong Lin
- Endocrine Department, Affiliated Hospital of Beihua University, Chuanying, Jilin 132011, P.R. China
| | - Yan Xu
- Endocrine Department, Affiliated Hospital of Beihua University, Chuanying, Jilin 132011, P.R. China
| | - Dongming Zhao
- Cardiovascular Department, Affiliated Hospital of Beihua University, Chuanying, Jilin 132011, P.R. China
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10
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Song J, Ding W, Liu B, Liu D, Xia Z, Zhang L, Cui L, Luo Y, Jia X, Feng L. Anticancer effect of caudatin in diethylnitrosamine‑induced hepatocarcinogenesis in rats. Mol Med Rep 2020; 22:697-706. [PMID: 32626931 PMCID: PMC7339819 DOI: 10.3892/mmr.2020.11135] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 04/08/2020] [Indexed: 12/13/2022] Open
Abstract
An overwhelming endoplasmic reticulum stress (ERS) and the following unfolded protein response (UPR) can induce hepatic inflammation, fibrosis and hepatocellular carcinoma (HCC). Caudatin, one of the species of C-21 steroidal glycosides mainly isolated from the roots of Cynanchum bungei Decne, exhibits potent anticancer activities in vivo. However, the effect of caudatin on HCC remains unclear. In the present study, a diethylnitrosamine (DEN)-induced HCC model was established. Nodules and tumors in rat livers were monitored by T2-/T1-weighted-magnetic resonance imaging (MRI) using a 1.5 T scanner. Caudatin reduced the number and size of nodules and alleviated the inflammatory foci in the liver. In addition, the hepatic pro-inflammatory levels of interleukin (IL) 6, monocyte chemoattractant protein 1 and IL-1β were decreased in caudatin-treated rats. The DEN-induced surge in malondialdehyde, aspartate aminotransferase, alanine transaminase and TBIL were alleviated following caudatin treatment. The expression of ERS chaperones glucose-regulated protein, 94 kDa, glucose-regulated protein, 78 kDa and protein disulfide-isomerase A4 and the proliferation marker Ki-67 in liver nodules were all downregulated by caudatin as demonstrated by immunohistochemistry, reverse transcription-quantitative PCR and western blot analysis. Caudatin reduced the cytoprotective ERS sensor activating transcription factor 6-mediated signal transduction and inhibited the PKR-like endoplasmic reticulum kinase/eukaryotic initiation factor 2α/activating transcription factor 4 pathway. However, the effect of caudatin on inositol requiring enzyme 1 signaling was negligible. In conclusion, restoration of the dysregulated UPR program was involved in the antitumor efficacy of caudatin without inducing cumulative hepatotoxicity.
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Affiliation(s)
- Jie Song
- Department of Oncology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210028, P.R. China
| | - Wenbo Ding
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P.R. China
| | - Bojia Liu
- Department of Oncology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210028, P.R. China
| | - Dan Liu
- Department of Oncology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210028, P.R. China
| | - Zhi Xia
- Department of Oncology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210028, P.R. China
| | - Li Zhang
- Department of Oncology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210028, P.R. China
| | - Li Cui
- Department of Oncology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210028, P.R. China
| | - Yi Luo
- Department of Oncology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210028, P.R. China
| | - Xiaobin Jia
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P.R. China
| | - Liang Feng
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 211198, P.R. China
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11
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Liu T, Wan Y, Xiao Y, Xia C, Duan G. Dual-Target Inhibitors Based on HDACs: Novel Antitumor Agents for Cancer Therapy. J Med Chem 2020; 63:8977-9002. [PMID: 32320239 DOI: 10.1021/acs.jmedchem.0c00491] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Histone deacetylases (HDACs) play an important role in regulating target gene expression. They have been highlighted as a novel category of anticancer targets, and their inhibition can induce apoptosis, differentiation, and growth arrest in cancer cells. In view of the fact that HDAC inhibitors and other antitumor agents, such as BET inhibitors, topoisomerase inhibitors, and RTK pathway inhibitors, exert a synergistic effect on cellular processes in cancer cells, the combined inhibition of two targets is regarded as a rational strategy to improve the effectiveness of these single-target drugs for cancer treatment. In this review, we discuss the theoretical basis for designing HDAC-involved dual-target drugs and provide insight into the structure-activity relationships of these dual-target agents.
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Affiliation(s)
- Tingting Liu
- Department of Medicinal Chemistry, School of Pharmacy, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, Shandong, China
| | - Yichao Wan
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
| | - Yuliang Xiao
- Department of Medicinal Chemistry, School of Pharmacy, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, Shandong, China
| | - Chengcai Xia
- Department of Medicinal Chemistry, School of Pharmacy, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, Shandong, China
| | - Guiyun Duan
- Department of Medicinal Chemistry, School of Pharmacy, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, Shandong, China
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12
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Chen HC, Tseng YK, Shu CW, Fu TY, Liou HH, Huang CH, Chen CC, Wang JS, Wu PC, Ger LP, Hung WC, Liu PF. Prognostic role of RECK in pathological outcome-dependent buccal mucosa squamous cell carcinoma. Oral Dis 2019; 26:62-71. [PMID: 31618798 DOI: 10.1111/odi.13214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 09/01/2019] [Accepted: 10/11/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Buccal mucosal squamous cell carcinoma (BMSCC) is an aggressive oral cancer. Moreover, reversion-inducing cysteine-rich protein with Kazal motifs (RECK) is a well-known tumor suppressor in many cancers. Our aim was to investigate the association of RECK expression with prognosis in BMSCC patients with different clinicopathological features. MATERIALS AND METHODS The expression level of RECK was determined by immunohistochemistry using tissue microarrays containing specimens from 193 BMSCC patients. The association of RECK expression with outcomes in BMSCC patients stratified by different clinicopathological features was analyzed by Cox proportional hazards models. RESULTS The low expression level of RECK was associated with shorter disease-specific survival, especially in patients with age >40 years, moderate or poor cell differentiation, advanced pathological stage, and history of postoperative radiotherapy. However, the low expression level of RECK was not associated with poor disease-free survival, except in BMSCC patients with age ≦40 years, advanced pathological stage and lymph node metastasis. Furthermore, RECK-knockdowned cells showed higher cell viability and abilities of invasion/migration, indicating that RECK might be a tumor suppressor for tumor progression in oral cancer. CONCLUSION The low expression of RECK might be a potential prognostic biomarker for pathological outcome-dependent BMSCC patients.
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Affiliation(s)
- Hung-Chih Chen
- Department of Stomatology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan.,Department of Dental Technology, Shu-Zen Junior College of Medicine and Management, Kaohsiung, Taiwan
| | - Yu-Kai Tseng
- Department of Orthopedics, Show Chwan Memorial Hospital, Changhua, Taiwan.,Department of Orthopedics, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Chih-Wen Shu
- School of Medicine for International Students, I-Shou University, Kaohsiung, Taiwan
| | - Ting-Ying Fu
- Department of Pathology and Laboratory Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Huei-Han Liou
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Cheng-Hui Huang
- Department of Otorhinolaryngology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Chien-Chou Chen
- Department of Family Medicine, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung, Taiwan
| | - Jyh-Seng Wang
- Department of Pathology and Laboratory Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan.,School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Pi-Chuang Wu
- Department of Nutrition, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Luo-Ping Ger
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Wen-Chun Hung
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan.,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Pei-Feng Liu
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan.,Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan.,Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
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13
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Synthesis, anticancer activity, structure–activity relationship and binding mode of interaction studies of substituted pentanoic acids. Future Med Chem 2019; 11:1679-1702. [PMID: 31370697 DOI: 10.4155/fmc-2018-0361] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Aim: Simultaneous inhibition of MMP-2 and HDAC8 may be an effective strategy to target cancer. Methodology: In continuation of our earlier efforts, a series of substituted pentanoic acids (1–18) were synthesized and checked for their biological activity along with some earlier reported compounds (19 –35). Results: Compounds 18 and 31 were found to induce apoptosis effectively in a dose-dependent fashion in Jurkat-E6.1 cell line. They reduced the expression of both MMP-2 and HDAC8 effectively. 31 also produced prominent intensity of fluorescence to bring nick in Jurkat-E6.1 cells. 31 also showed cellular arrest in sub-G0 phase. Conclusion: Such compounds may be useful to battle against cancer.
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14
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HDAC1,2 Knock-Out and HDACi Induced Cell Apoptosis in Imatinib-Resistant K562 Cells. Int J Mol Sci 2019; 20:ijms20092271. [PMID: 31071955 PMCID: PMC6539538 DOI: 10.3390/ijms20092271] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 04/30/2019] [Accepted: 05/06/2019] [Indexed: 12/11/2022] Open
Abstract
Since imatinib (Glivec or Gleevec) has been used to target the BCR-ABL fusion protein, chronic myeloid leukemia (CML) has become a manageable chronic disease with long-term survival. However, 15%–20% of CML patients ultimately develop resistance to imatinib and then progress to an accelerated phase and eventually to a blast crisis, limiting treatment options and resulting in a poor survival rate. Thus, we investigated whether histone deacetylase inhibitors (HDACis) could be used as a potential anticancer therapy for imatinib-resistant CML (IR-CML) patients. By applying a noninvasive apoptosis detection sensor (NIADS), we found that panobinostat significantly enhanced cell apoptosis in K562 cells. A further investigation showed that panobinostat induced apoptosis in both K562 and imatinib-resistant K562 (IR-K562) cells mainly via H3 and H4 histone acetylation, whereas panobinostat targeted cancer stem cells (CSCs) in IR-K562 cells. Using CRISPR/Cas9 genomic editing, we found that HDAC1 and HDAC2 knockout cells significantly induced cell apoptosis, indicating that the regulation of HDAC1 and HDAC2 is extremely important in maintaining K562 cell survival. All information in this study indicates that regulating HDAC activity provides therapeutic benefits against CML and IR-CML in the clinic.
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15
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De U, Son JY, Sachan R, Park YJ, Kang D, Yoon K, Lee BM, Kim IS, Moon HR, Kim HS. A New Synthetic Histone Deacetylase Inhibitor, MHY2256, Induces Apoptosis and Autophagy Cell Death in Endometrial Cancer Cells via p53 Acetylation. Int J Mol Sci 2018; 19:ijms19092743. [PMID: 30217020 PMCID: PMC6164480 DOI: 10.3390/ijms19092743] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 09/07/2018] [Accepted: 09/10/2018] [Indexed: 12/28/2022] Open
Abstract
We previously discovered a novel sirtuin (SIRT) inhibitor, MHY2256, that exerts anticancer activity through p53 acetylation in MCF-7 human breast cancer cells. We investigated the anticancer activity of MHY2256 against hormone-related cancer, an endometrial cancer with a poor prognosis. The IC50 values of MHY2256 were shown to be much lower than those of salermide, a well-known SIRT inhibitor. Furthermore, MHY2256 significantly reduced the protein expression and activities of SIRT1, 2, and 3, with similar effects to salermide. Particularly, MHY2256 markedly inhibited tumor growth in a tumor xenograft mouse model of Ishikawa cancer cells. During the experimental period, there was no significant change in the body weight of mice treated with MHY2256. A detailed analysis of the sensitization mechanisms of Ishikawa cells revealed that late apoptosis was largely increased by MHY2256. Additionally, MHY2256 increased G1 arrest and reduced the number of cell cyclic-related proteins, suggesting that apoptosis by MHY2256 was achieved by cellular arrest. Particularly, p21 was greatly increased by MHY225656, suggesting that cell cycle arrest by p21 is a major factor in MHY2256 sensitization in Ishikawa cells. We also detected a significant increase in acetylated p53, a target protein of SIRT1, in Ishikawa cells after MHY2256 treatment. In a mouse xenograft model, MHY2256 significantly reduced tumor growth and weight without apparent side effects. These results suggest that MHY2256 exerts its anticancer activity through p53 acetylation in endometrial cancer and can be used for targeting hormone-related cancers.
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Affiliation(s)
- Umasankar De
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - Ji Yeon Son
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - Richa Sachan
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - Yu Jin Park
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - Dongwan Kang
- College of Pharmacy, Pusan National University, Busandaehak-ro 63 beon-gil 2, Geumjeong-gu, Busan 46241, Korea.
| | - Kyungsil Yoon
- Comparative Biomedicine Research Branch, Division of Translational Science, National Cancer Center, 323 Ilsandong-gu, Goyang-si 10408, Korea.
| | - Byung Mu Lee
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - Hyung Ryong Moon
- College of Pharmacy, Pusan National University, Busandaehak-ro 63 beon-gil 2, Geumjeong-gu, Busan 46241, Korea.
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
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16
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Kim TW, Lee SY, Kim M, Cheon C, Ko SG. Kaempferol induces autophagic cell death via IRE1-JNK-CHOP pathway and inhibition of G9a in gastric cancer cells. Cell Death Dis 2018; 9:875. [PMID: 30158521 PMCID: PMC6115440 DOI: 10.1038/s41419-018-0930-1] [Citation(s) in RCA: 199] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 07/11/2018] [Accepted: 07/25/2018] [Indexed: 01/19/2023]
Abstract
Kaempferol, a flavonoid, found in traditional medicine, fruits, and vegetables, and an HDAC inhibitor, is a powerful anti-cancer reagent against various cancer cell lines. However, detailed mechanisms involved in the treatment of gastric cancer (GC) using kaempferol are not fully understood. In our study, we investigated the biological activity and molecular mechanism involved in kaempferol-mediated treatment of GC. Kaempferol promoted autophagy and cell death, and increased LC3-I to LC3-II conversion and the downregulation of p62 in GC. Furthermore, our results showed that kaempferol induces autophagic cell death via the activation of the IRE1-JNK-CHOP signaling, indicating ER stress response. Indeed, the inhibition of ER stress suppressed kaempferol-induced autophagy and conferred prolonged cell survival, indicating autophagic cell death. We further showed that kaempferol mediates epigenetic change via the inhibition of G9a (HDAC/G9a axis) and also activates autophagic cell death. Taken together, our findings indicate that kaempferol activates the IRE1-JNK-CHOP signaling from cytosol to nucleus, and G9a inhibition activates autophagic cell death in GC cells.
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Affiliation(s)
- Tae Woo Kim
- Department of Preventive Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Seon Young Lee
- Department of Preventive Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Mia Kim
- Department of Cardiovascular and Neurologic disease (Stroke center), College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Chunhoo Cheon
- Department of Preventive Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Korea.
| | - Seong-Gyu Ko
- Department of Preventive Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Korea.
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17
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Abramson HN. The Multiple Myeloma Drug Pipeline-2018: A Review of Small Molecules and Their Therapeutic Targets. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2018; 18:611-627. [PMID: 30001985 DOI: 10.1016/j.clml.2018.06.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 06/08/2018] [Accepted: 06/12/2018] [Indexed: 12/21/2022]
Abstract
Treatment of multiple myeloma (MM), a neoplasm of plasma cells, formerly dependent on alkylating drugs, corticosteroids, and autologous stem cell transplantation, has changed dramatically in the past 20 years because 3 new classes of small molecule drugs (arbitrarily defined as having a molecular weight of < 900 kDa)-immunomodulators, proteasome inhibitors, and histone deacetylase blockers-have been introduced for the disease. Therapeutic options for MM expanded further in 2015 when 2 new monoclonal antibodies (daratumumab and elotuzumab) were approved by the Food and Drug Administration for MM. Although MM remains incurable, the cumulative effect of these advances has resulted in a near-doubling of the 5-year survival rate since the late 1980s. Despite these advances, therapy for MM continues to pose substantial challenges because resistance to therapy frequently develops, and relapse and recurrence are all too common. The present review focused on the pipeline for new small molecules in various stages of development and their associated cellular targets. In addition to newer versions of alkylators, immunomodulators, proteasome inhibitors, and histone deacetylase inhibitors, the present review considered the prospects for adding new classes of small molecules to the MM armamentarium, which offer the potential for oral efficacy, relative simplicity of preparation, and prospects for improvement in the cost-to-benefit ratio. Included are agents that affect myeloma epigenetics and the ubiquitination-proteasome system and the unfolded protein response, apoptotic mechanisms, chromosomal abnormalities, nuclear protein transport, and various kinases involved in cellular signaling pathways.
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Affiliation(s)
- Hanley N Abramson
- Department of Pharmaceutical Sciences, Wayne State University, Detroit, MI.
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18
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Yang W, Wu F, Luo T, Zhang Y. CCAAT/enhancer binding protein homologous protein knockdown alleviates hypoxia-induced myocardial injury in rat cardiomyocytes exposed to high glucose. Exp Ther Med 2018; 15:4213-4222. [PMID: 29725368 PMCID: PMC5920208 DOI: 10.3892/etm.2018.5944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 01/16/2018] [Indexed: 12/22/2022] Open
Abstract
Diabetic patients are more sensitive to ischemic injury than non-diabetics. Endoplasmic reticulum (ER) stress has been reported to be closely associated with the pathophysiology of ischemic injury in diabetes. The aim of the present study was to investigate the mechanisms involved in the progression of diabetes complicated by myocardial infarction (MI) and further verify the role of CCAAT/enhancer binding protein (C/EBP)-homologous protein (CHOP) using an in vitro model of diabetes/MI. The rats were exposed to 65 mg/kg streptozotocin (STZ) and left anterior descending (LAD) coronary artery ligation. ST-segment elevation, heart rate, left ventricular systolic pressure (LVSP) and LV end-diastolic pressure (LVEDP) were measured. Serum creatinine kinase-MB (CK-MB) and cardiac troponin T (cTnT) levels were examined by ELISA. Infarct size and apoptosis were measured by triphenyltetrazolium chloride staining and terminal deoxynucleotidyl-transferase-mediated dUTP nick end labeling assay. Pathological changes were evaluated by hematoxylin and eosin staining. H9c2 cells were used to establish an in vitro model of diabetes complicated by MI. Following CHOP knockdown, cell viability, cell cycle distribution and apoptosis were examined by Cell Counting Kit-8 assay, flow cytometry and Hoechst staining. Glucose-regulated protein 78 (GRP78), CHOP, B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein (Bax), endoplasmic reticulum oxidoreductase 1 (Ero1)-α, Ero1β and protein disulfide isomerase (PDI) levels in both myocardial tissues and H9c2 cells were determined by western blotting. In the present study, diabetes complicated by MI promoted ST-segment elevation and myocardial apoptosis, increased infarct size, induced pathological changes and elevated LVEDP, CK-MB, cTnT, GRP78, CHOP, Bax, Ero1α, Ero1β and PDI; however, it decreased heart rate, LVSP and Bcl-2. Additionally, high glucose combined with hypoxic treatment reduced cell viability, induced cell cycle arrest at G1 phase, promoted cell apoptosis, and activated the GRP78/CHOP and Ero1/PDI signaling pathways, which were reversed by CHOP knockdown. Thus, CHOP may be an effective therapeutic target for the treatment of diabetes complicated by MI.
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Affiliation(s)
- Wenqi Yang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Fang Wu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Ting Luo
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yuelan Zhang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Amin SA, Adhikari N, Jha T. Is dual inhibition of metalloenzymes HDAC-8 and MMP-2 a potential pharmacological target to combat hematological malignancies? Pharmacol Res 2017; 122:8-19. [DOI: 10.1016/j.phrs.2017.05.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 04/17/2017] [Accepted: 05/03/2017] [Indexed: 12/17/2022]
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