1
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Ferreira-Silva GÁ, Rodrigues DA, Pressete CG, Caixeta ES, Gamero AMC, Miyazawa M, Hanemann JAC, Fraga CAM, Aissa AF, Ionta M. Selective inhibition of HDAC6 by N-acylhydrazone derivative reduces the proliferation and induces senescence in carcinoma hepatocellular cells. Toxicol In Vitro 2024; 99:105884. [PMID: 38945376 DOI: 10.1016/j.tiv.2024.105884] [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] [Received: 05/03/2024] [Revised: 06/13/2024] [Accepted: 06/25/2024] [Indexed: 07/02/2024]
Abstract
Hepatocellular carcinoma (HCC) is a significant contributor to cancer-related deaths globally. Systemic therapy is the only treatment option for HCC at an advanced stage, with limited therapeutic response. In this study, we evaluated the antitumor potential of four N-acylhydrazone (NAH) derivatives, namely LASSBio-1909, 1911, 1935, and 1936, on HCC cell lines. We have previously demonstrated that the aforementioned NAH derivatives selectively inhibit histone deacetylase 6 (HDAC6) in lung cancer cells, but their effects on HCC cells have not been explored. Thus, the present study aimed to evaluate the effects of NAH derivatives on the proliferative behavior of HCC cells. LASSBio-1911 was the most cytotoxic compound against HCC cells, however its effects were minimal on normal cells. Our results showed that LASSBio-1911 inhibited HDAC6 in HCC cells leading to cell cycle arrest and decreased cell proliferation. There was also an increase in the frequency of cells in mitosis onset, which was associated with disturbing mitotic spindle formation. These events were accompanied by elevated levels of CDKN1A mRNA, accumulation of CCNB1 protein, and sustained ERK1 phosphorylation. Furthermore, LASSBio-1911 induced DNA damage, resulting in senescence and/or apoptosis. Our findings indicate that selective inhibition of HDAC6 may provide an effective therapeutic strategy for the treatment of advanced HCC, including tumor subtypes with integrated viral genome. Further, in vivo studies are required to validate the antitumor effect of LASSBio-1911 on liver cancer.
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Affiliation(s)
| | - Daniel Alencar Rodrigues
- Laboratory of Evaluation and Synthesis of Bioactive Substances (LASSBio), Institute of Biomedical Sciences, Federal University of Rio de Janeiro, CCS, Rio de Janeiro, RJ, Brazil
| | | | | | - Angel Mauricio Castro Gamero
- Human Genetics Laboratory, Institute of Natural Science, Federal University of Alfenas, zip-code 37130-001, Alfenas, MG, Brazil
| | - Marta Miyazawa
- School of Dentistry, Federal University of Alfenas, 37130-001 MG, Brazil
| | | | - Carlos Alberto Manssour Fraga
- Laboratory of Evaluation and Synthesis of Bioactive Substances (LASSBio), Institute of Biomedical Sciences, Federal University of Rio de Janeiro, CCS, Rio de Janeiro, RJ, Brazil
| | - Alexandre Ferro Aissa
- Institute of Biomedical Sciences, Federal University of Alfenas, MG 37130-001, Brazil.
| | - Marisa Ionta
- Institute of Biomedical Sciences, Federal University of Alfenas, MG 37130-001, Brazil.
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2
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Froehlich T, Jenner A, Cavarischia-Rega C, Fagbadebo FO, Lurz Y, Frecot DI, Kaiser PD, Nueske S, Scholz AM, Schäffer E, Garcia-Saez AJ, Macek B, Rothbauer U. Nanobodies as novel tools to monitor the mitochondrial fission factor Drp1. Life Sci Alliance 2024; 7:e202402608. [PMID: 38816213 PMCID: PMC11140114 DOI: 10.26508/lsa.202402608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 05/14/2024] [Accepted: 05/15/2024] [Indexed: 06/01/2024] Open
Abstract
In cells, mitochondria undergo constant fusion and fission. An essential factor for fission is the mammalian dynamin-related protein 1 (Drp1). Dysregulation of Drp1 is associated with neurodegenerative diseases including Parkinson's, cardiovascular diseases and cancer, making Drp1 a pivotal biomarker for monitoring mitochondrial status and potential pathophysiological conditions. Here, we developed nanobodies (Nbs) as versatile binding molecules for proteomics, advanced microscopy and live cell imaging of Drp1. To specifically enrich endogenous Drp1 with interacting proteins for proteomics, we functionalized high-affinity Nbs into advanced capture matrices. Furthermore, we detected Drp1 by bivalent Nbs combined with site-directed fluorophore labelling in super-resolution STORM microscopy. For real-time imaging of Drp1, we intracellularly expressed fluorescently labelled Nbs, so-called chromobodies (Cbs). To improve the signal-to-noise ratio, we further converted Cbs into a "turnover-accelerated" format. With these imaging probes, we visualized the dynamics of endogenous Drp1 upon compound-induced mitochondrial fission in living cells. Considering the wide range of research applications, the presented Nb toolset will open up new possibilities for advanced functional studies of Drp1 in disease-relevant models.
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Affiliation(s)
- Theresa Froehlich
- Pharmaceutical Biotechnology, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Andreas Jenner
- Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Claudia Cavarischia-Rega
- Quantitative Proteomics, Department of Biology, Institute of Cell Biology, Eberhard Karls University Tübingen, Tübingen, Germany
| | | | - Yannic Lurz
- Center for Plant Molecular Biology (ZMBP), Eberhard Karls University Tübingen, Tübingen, Germany
| | - Desiree I Frecot
- Pharmaceutical Biotechnology, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Philipp D Kaiser
- https://ror.org/03a1kwz48 NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
| | - Stefan Nueske
- Livestock Center of the Faculty of Veterinary Medicine, Ludwig Maximilians University Munich, Munich, Germany
| | - Armin M Scholz
- Livestock Center of the Faculty of Veterinary Medicine, Ludwig Maximilians University Munich, Munich, Germany
| | - Erik Schäffer
- Center for Plant Molecular Biology (ZMBP), Eberhard Karls University Tübingen, Tübingen, Germany
| | - Ana J Garcia-Saez
- Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Max Planck Institute of Biophysics, Frankfurt, Germany
| | - Boris Macek
- Quantitative Proteomics, Department of Biology, Institute of Cell Biology, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Ulrich Rothbauer
- Pharmaceutical Biotechnology, Eberhard Karls University Tübingen, Tübingen, Germany
- https://ror.org/03a1kwz48 Cluster of Excellence iFIT (EXC2180) "Image-Guided and Functionally Instructed Tumor Therapies," University of Tübingen, Tübingen, Germany
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3
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Jia Q, Li J, Guo X, Li Y, Wu Y, Peng Y, Fang Z, Zhang X. Neuroprotective effects of chaperone-mediated autophagy in neurodegenerative diseases. Neural Regen Res 2024; 19:1291-1298. [PMID: 37905878 DOI: 10.4103/1673-5374.385848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 07/17/2023] [Indexed: 11/02/2023] Open
Abstract
ABSTRACT Chaperone-mediated autophagy is one of three types of autophagy and is characterized by the selective degradation of proteins. Chaperone-mediated autophagy contributes to energy balance and helps maintain cellular homeostasis, while providing nutrients and support for cell survival. Chaperone-mediated autophagy activity can be detected in almost all cells, including neurons. Owing to the extreme sensitivity of neurons to their environmental changes, maintaining neuronal homeostasis is critical for neuronal growth and survival. Chaperone-mediated autophagy dysfunction is closely related to central nervous system diseases. It has been shown that neuronal damage and cell death are accompanied by chaperone-mediated autophagy dysfunction. Under certain conditions, regulation of chaperone-mediated autophagy activity attenuates neurotoxicity. In this paper, we review the changes in chaperone-mediated autophagy in neurodegenerative diseases, brain injury, glioma, and autoimmune diseases. We also summarize the most recent research progress on chaperone-mediated autophagy regulation and discuss the potential of chaperone-mediated autophagy as a therapeutic target for central nervous system diseases.
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Affiliation(s)
- Qi Jia
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Jin Li
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
- Department of Critical Care Medicine, Air Force Medical Center, Beijing, China
| | - Xiaofeng Guo
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Yi Li
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - You Wu
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Yuliang Peng
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Zongping Fang
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xijing Zhang
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
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4
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Barone S, Mateu B, Turco L, Pelliccia S, Lembo F, Summa V, Buommino E, Brindisi M. Unveiling the modulation of Pseudomonas aeruginosa virulence and biofilm formation by selective histone deacetylase 6 inhibitors. Front Microbiol 2024; 15:1340585. [PMID: 38371939 PMCID: PMC10869609 DOI: 10.3389/fmicb.2024.1340585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 01/10/2024] [Indexed: 02/20/2024] Open
Abstract
Bacterial infections represent a key public health issue due to the occurrence of multidrug-resistant bacteria. Recently, the amount of data supporting the dynamic control of epigenetic pathways by environmental cues has triggered research efforts toward the clarification of their role in microbial infections. Among protein post-translational modifications, reversible acetylation is the most implicated in the feedback to environmental stimuli and in cellular homeostasis. Accordingly, the latest studies identified the histone deacetylase 6 (HDAC6) enzyme as a crucial player in the complex molecular machinery underlying bacterial clearance or killing. A very important milestone for the elucidation of the consequence of HDAC6 activity in bacterial infections is herein described, unveiling for the first time the role of a potent HDAC6 inhibitor in interfering with biofilm formation and modulating virulence factors of P. aeruginosa. We demonstrated that compound F2F-2020202 affected the production of some important virulence factors in P. aeruginosa, namely pyocyanin and rhamnolipids, clearly impairing its ability to form biofilm. Furthermore, evidence of possible QS involvement is supported by differential regulation of specific genes, namely RhlI, phAz1, and qsrO. The data herein obtained also complement and in part explain our previous results with selective HDAC6 inhibitors able to reduce inflammation and bacterial load in chronic infection models recapitulating the cystic fibrosis (CF) phenotype. This study fosters future in-depth investigation to allow the complete elucidation of the molecular mechanisms underlying HDAC6's role in bacterial infections.
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Affiliation(s)
- Simona Barone
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Baptiste Mateu
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Luigia Turco
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
- Department of Precision Medicine, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Sveva Pelliccia
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Francesca Lembo
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Vincenzo Summa
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
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5
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Zhang S, Sui L, Kong X, Huang R, Li Z. HDAC6 decreases H4K16 and α-tubulin acetylation during porcine oocyte maturation. Cell Cycle 2023; 22:2057-2069. [PMID: 37904550 PMCID: PMC10761081 DOI: 10.1080/15384101.2023.2275907] [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] [Received: 04/28/2021] [Accepted: 10/22/2023] [Indexed: 11/01/2023] Open
Abstract
HDAC6 is an essential factor in mouse oocyte maturation. However, the roles of HDAC6 in porcine oocyte maturation are still unclear. Therefore, we analyzed the roles of HDAC6 in porcine oocyte maturation by treatment with Tubastatin A (TubA) which is an HDAC6 inhibitor. Our results showed that treatment with 10 μg/ml TubA significantly decreased the rate of porcine oocyte maturation, but it did not influence the rate of germinal vesicle breakdown (GVBD). Then, we found that TubA treatment disrupted spindle organization by increasing the α-tubulin acetylation level during porcine oocyte maturation. Moreover, TubA treatment significantly increased H4K16 acetylation, which may compromise kinetochore and microtubule (K-MT) attachment during meiosis in porcine oocytes. We also analyzed the effects of TubA on meiosis-related (H3T3pho and H3S10pho) and transcription-related histone modifications (H3K4me3, H3K9me3 and H3K4ac) during porcine oocyte maturation. The results showed that TubA treatment increased H3S10pho and H3K4ac levels, but no influence was seen in H3T3pho, H3K4me3 and H3K9me3 levels in porcine oocytes. TubA treated oocytes also showed a compromised ability to develop after parthenogenetic activation. Finally, we found that HDAC6 exhibited higher mRNA levels and lower DNA methylation levels in porcine oocytes than it did in porcine embryonic fibroblasts (PEFs). These results indicate that the low level of DNA methylation in HDAC6 promoter ensures high expression. HDAC6 regulates the deacetylation of α-tubulin and H4K16, which promotes correct spindle organization and meiotic apparatus assembly during porcine oocyte maturation. This study illustrates a new pathway by which HDAC6 modulates mammalian oocyte maturation.
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Affiliation(s)
- Sheng Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, Jilin, China
| | - Liyan Sui
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, Jilin, China
| | - Xiangjie Kong
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, Jilin, China
| | - Rong Huang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, Jilin, China
| | - Ziyi Li
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, Jilin, China
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6
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Silva J, Yu J, Kalinsky K. Reply to: Ricolinostat is not a highly selective HDAC6 inhibitor. NATURE CANCER 2023; 4:809-811. [PMID: 37322366 DOI: 10.1038/s43018-023-00583-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 05/17/2023] [Indexed: 06/17/2023]
Affiliation(s)
- Jose Silva
- Department of Pathology, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA.
| | - Jiyang Yu
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Kevin Kalinsky
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
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7
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Xue Y, Gan B, Zhou Y, Wang T, Zhu T, Peng X, Zhang X, Zhou Y. Advances in the Mechanistic Study of the Control of Oxidative Stress Injury by Modulating HDAC6 Activity. Cell Biochem Biophys 2023; 81:127-139. [PMID: 36749475 PMCID: PMC9925596 DOI: 10.1007/s12013-022-01125-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 12/14/2022] [Indexed: 02/08/2023]
Abstract
Oxidative stress is defined as an injury resulting from a disturbance in the dynamic equilibrium of the redox environment due to the overproduction of active/radical oxygen exceeding the antioxidative ability of the body. This is a key step in the development of various diseases. Oxidative stress is modulated by different factors and events, including the modification of histones, which are the cores of nucleosomes. Histone modification includes acetylation and deacetylation of certain amino acid residues; this process is catalyzed by different enzymes. Histone deacetylase 6 (HDAC6) is a unique deacetylating protease that also catalyzes the deacetylation of different nonhistone substrates to regulate various physiologic processes. The intimate relationship between HDAC6 and oxidative stress has been demonstrated by different studies. The present paper aims to summarize the data obtained from a mechanistic study of HDAC6 and oxidative stress to guide further investigations on mechanistic characterization and drug development.
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Affiliation(s)
- Yuanye Xue
- grid.410560.60000 0004 1760 3078Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808 China
| | - Bing Gan
- grid.410560.60000 0004 1760 3078The Third Affiliated Hospital of Guangdong Medical University, Fo Shan, 528000 Guangdong China
| | - Yanxing Zhou
- grid.410560.60000 0004 1760 3078School of Medical Technology, Guangdong Medical University, Dongguan, 523808 China
| | - Tingyu Wang
- grid.410560.60000 0004 1760 3078Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808 China
| | - Tong Zhu
- grid.410560.60000 0004 1760 3078Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808 China
| | - Xinsheng Peng
- Biomedical Innovation Center, Guangdong Medical University, Dongguan, 523808, China. .,Institute of Marine Medicine, Guangdong Medical University, Zhanjiang, 524023, China.
| | - Xiangning Zhang
- Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808, China.
| | - Yanfang Zhou
- Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808, China.
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8
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Adinew GM, Messeha SS, Taka E, Badisa RB, Soliman KFA. Anticancer Effects of Thymoquinone through the Antioxidant Activity, Upregulation of Nrf2, and Downregulation of PD-L1 in Triple-Negative Breast Cancer Cells. Nutrients 2022; 14:nu14224787. [PMID: 36432484 PMCID: PMC9695946 DOI: 10.3390/nu14224787] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 11/04/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022] Open
Abstract
The variety of therapies available for treating and preventing triple-negative breast cancer (TNBC) is constrained by the absence of progesterone receptors, estrogen receptors, and human epidermal growth factor receptor 2. Nrf2 (nuclear factor-erythroid 2-related factor), and PD-L1 (program cell death ligand 1), a downstream signaling target, have a strong correlation to oxidative stress and inflammation, major factors in the development and progression of TNBC. In this study, the genetically distinct MDA-MB-231 and MDA-MB-468 TNBC cells were treated with the natural component thymoquinone (TQ). The results show that TQ exhibits considerable antioxidant activity and decreases the generation of H2O2, at the same time increasing catalase (CAT) activity, superoxide dismutase (SOD) enzyme, and glutathione (GSH). Additionally, the results show that TQ treatment increased the levels of the different genes involved in the oxidative stress-antioxidant defense system PRNP, NQO1, and GCLM in both cell lines with significant large-fold change in MDA-MB-468 cells (+157.65 vs. +1.7, +48.87 vs. +2.63 and +4.78 vs. +2.17), respectively. Nrf2 mRNA and protein expression were also significantly increased in TQ-treated TNBC cells despite being higher in MDA-MB-468 cells (6.67 vs. 4.06). Meanwhile, TQ administration increased mRNA levels while decreasing PD-L1 protein expression in both cell lines. In conclusion, TQ modifies the expression of multiple oxidative-stress-antioxidant system genes, ROS, antioxidant enzymes, Nrf2, and PD-L1 protein, pointing to the therapeutic potential and chemopreventive utilization of TQ in TNBC.
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9
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Efficacy of selective histone deacetylase 6 inhibition in mouse models of Pseudomonas aeruginosa infection: A new glimpse for reducing inflammation and infection in cystic fibrosis. Eur J Pharmacol 2022; 936:175349. [DOI: 10.1016/j.ejphar.2022.175349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 10/17/2022] [Accepted: 10/20/2022] [Indexed: 11/22/2022]
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10
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Barone S, Cassese E, Alfano AI, Brindisi M, Summa V. Chasing a Breath of Fresh Air in Cystic Fibrosis (CF): Therapeutic Potential of Selective HDAC6 Inhibitors to Tackle Multiple Pathways in CF Pathophysiology. J Med Chem 2022; 65:3080-3097. [PMID: 35148101 PMCID: PMC8883472 DOI: 10.1021/acs.jmedchem.1c02067] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
![]()
Compelling new support
has been provided for histone deacetylase
isoform 6 (HDAC6) as a common thread in the generation of the dysregulated
proinflammatory and fibrotic phenotype in cystic fibrosis (CF). HDAC6
also plays a crucial role in bacterial clearance or killing as a direct
consequence of its effects on CF immune responses. Inhibiting HDAC6
functions thus eventually represents an innovative and effective strategy
to tackle multiple aspects of CF-associated lung disease. In this
Perspective, we not only showcase the latest evidence linking HDAC(6)
activity and expression with CF phenotype but also track the new dawn
of HDAC(6) modulators in CF and explore potentialities and future
perspectives in the field.
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Affiliation(s)
- Simona Barone
- Department of Pharmacy, Department of Excellence 2018-2022, School of Medicine and Surgery, University of Naples "Federico II", Via D. Montesano 49, I-80131 Naples, Italy
| | - Emilia Cassese
- Department of Pharmacy, Department of Excellence 2018-2022, School of Medicine and Surgery, University of Naples "Federico II", Via D. Montesano 49, I-80131 Naples, Italy
| | - Antonella Ilenia Alfano
- Department of Pharmacy, Department of Excellence 2018-2022, School of Medicine and Surgery, University of Naples "Federico II", Via D. Montesano 49, I-80131 Naples, Italy
| | - Margherita Brindisi
- Department of Pharmacy, Department of Excellence 2018-2022, School of Medicine and Surgery, University of Naples "Federico II", Via D. Montesano 49, I-80131 Naples, Italy
| | - Vincenzo Summa
- Department of Pharmacy, Department of Excellence 2018-2022, School of Medicine and Surgery, University of Naples "Federico II", Via D. Montesano 49, I-80131 Naples, Italy
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11
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HDAC6 Inhibition Extinguishes Autophagy in Cancer: Recent Insights. Cancers (Basel) 2021; 13:cancers13246280. [PMID: 34944907 PMCID: PMC8699196 DOI: 10.3390/cancers13246280] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/07/2021] [Accepted: 12/11/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Autophagy is an essential process in cell recycling, and its involvement in cancer has been increasingly recognized in the last few decades. This mechanism acts as a double-edged sword in tumor progression and is known to either block or promote tumorigenesis in a context-specific manner. Its role in determining chemotherapeutic resistance makes it a potential target in cancer treatment. The two autophagic inhibitors hydroxychloroquine and chloroquine are currently used in the clinic but cause several side effects in tumor patients. Since recent studies also show that epigenetic enzymes such as histone deacetylase (HDAC) proteins are able to modulate autophagy, this review focuses on the ability of HDAC6 to actively regulate the autophagic process. We also explore the possibility of using HDAC6 inhibitors as therapeutic agents in adjuvant treatment or in combination with autophagic modulators to trigger this mechanism, thus avoiding the occurrence and effects of chemoresistance. Abstract Autophagy is an essential intracellular catabolic mechanism involved in the degradation and recycling of damaged organelles regulating cellular homeostasis and energy metabolism. Its activation enhances cellular tolerance to various stresses and is known to be involved in drug resistance. In cancer, autophagy has a dual role in either promoting or blocking tumorigenesis, and recent studies indicate that epigenetic regulation is involved in its mechanism of action in this context. Specifically, the ubiquitin-binding histone deacetylase (HDAC) enzyme HDAC6 is known to be an important player in modulating autophagy. Epigenetic modulators, such as HDAC inhibitors, mediate this process in different ways and are already undergoing clinical trials. In this review, we describe current knowledge on the role of epigenetic modifications, particularly HDAC-mediated modifications, in controlling autophagy in cancer. We focus on the controversy surrounding their ability to promote or block tumor progression and explore the impact of HDAC6 inhibitors on autophagy modulation in cancer. In light of the fact that targeted drug therapy for cancer patients is attracting ever increasing interest within the research community and in society at large, we discuss the possibility of using HDAC6 inhibitors as adjuvants and/or in combination with conventional treatments to overcome autophagy-related mechanisms of resistance.
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12
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ROS as Regulators of Cellular Processes in Melanoma. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:1208690. [PMID: 34725562 PMCID: PMC8557056 DOI: 10.1155/2021/1208690] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 09/28/2021] [Indexed: 12/16/2022]
Abstract
In this review, we examine the multiple roles of ROS in the pathogenesis of melanoma, focusing on signal transduction and regulation of gene expression. In recent years, different studies have analyzed the dual role of ROS in regulating the redox system, with both negative and positive consequences on human health, depending on cell concentration of these agents. High ROS levels can result from an altered balance between oxidant generation and intracellular antioxidant activity and can produce harmful effects. In contrast, low amounts of ROS are considered beneficial, since they trigger signaling pathways involved in physiological activities and programmed cell death, with protective effects against melanoma. Here, we examine these beneficial roles, which could have interesting implications in melanoma treatment.
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13
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Dent P, Booth L, Poklepovic A, Kirkwood JM. Neratinib kills B-RAF V600E melanoma via ROS-dependent autophagosome formation and death receptor signaling. Pigment Cell Melanoma Res 2021; 35:66-77. [PMID: 34482636 DOI: 10.1111/pcmr.13014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 08/02/2021] [Accepted: 08/24/2021] [Indexed: 12/13/2022]
Abstract
Melanoma cells expressing mutant B-RAF V600E are susceptible to treatment with the combination of a B-RAF inhibitor and a MEK1/2 inhibitor. We investigated the impact of the ERBB family and MAP4K inhibitor neratinib on the biology of PDX isolates of cutaneous melanoma expressing B-RAF V600E. Neratinib synergized with HDAC inhibitors to kill melanoma cells at their physiologic concentrations. Neratinib activated ATM, AMPK, ULK1, and PERK and inactivated mTORC1/2, ERK1/2, eIF2 alpha, and STAT3. Neratinib increased expression of Beclin1, ATG5, CD95, and FAS-L and decreased levels of multiple toxic BH3 domain proteins, MCL1, BCL-XL, FLIP-s, and ERBB1/2/4. ATG13 S318 phosphorylation and autophagosome formation was dependent upon ATM, and activation of ATM was dependent on reactive oxygen species. Reduced expression of ERBB1/2/4 required autophagosome formation and reduced MCL1/BCL-XL levels required eIF2 alpha phosphorylation. Maximal levels of eIF2 alpha phosphorylation required signaling by ATM-AMPK and autophagosome formation. Knock down of eIF2 alpha, CD95, FAS-L, Beclin1, and ATG5 or over-expression of FLIP-s significantly reduced killing. Combined knock down of Beclin1 and CD95 abolished cell death. Our data demonstrate that PDX melanoma cells expressing B-RAF V600E are susceptible to being killed by neratinib and more so when combined with HDACi.
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Affiliation(s)
- Paul Dent
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA, USA
| | - Laurence Booth
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA, USA
| | - Andrew Poklepovic
- Department of Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - John M Kirkwood
- Melanoma and Skin Cancer Program, Hillman Cancer Research Pavilion Laboratory, University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA
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14
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Hu Z, Rong Y, Li S, Qu S, Huang S. Upregulated Histone Deacetylase 6 Associates with Malignant Progression of Melanoma and Predicts the Prognosis of Patients. Cancer Manag Res 2020; 12:12993-13001. [PMID: 33364845 PMCID: PMC7751721 DOI: 10.2147/cmar.s284199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 11/21/2020] [Indexed: 12/29/2022] Open
Abstract
Background Melanoma is the most malignant tumor among skin tumors, and its morbidity and mortality are increasing year by year. Although melanoma biology has been increasingly studied, no prognostic biomarkers have yet been incorporated into clinical protocols. Histone deacetylase 6 (HDAC6) has been shown to act as a prognostic biomarker in several cancers. Here, we aimed to investigate the predictive value of HDAC6 for the prognosis of cutaneous melanoma patients. Methods Eighty cutaneous melanoma patients were enrolled in this study. The protein and mRNA expression levels of HDAC6 were detected, and the clinical features and survival time of cutaneous melanoma patients with HDAC6 expression were analyzed. Results The results suggested that high HDAC6 expression was significantly associated with unfavorable clinicopathological features. High HDAC6 expression was related to melanoma metastasis and was also associated with a reduced survival time in melanoma patients, and this association remained significant in multivariate analysis adjusted for all other factors. Conclusion These findings validate the utility of HDAC6 expression as an independent biomarker for the prognostication of patients with cutaneous melanoma.
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Affiliation(s)
- Zhicheng Hu
- Burns Department, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Yanchao Rong
- Burns Department, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Shuting Li
- Department of Plastic Surgery, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Shanqiang Qu
- Section of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Shaobin Huang
- Department of Cosmetic and Plastic Surgery, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People's Republic of China
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15
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Abouhish H, Thounaojam MC, Jadeja RN, Gutsaeva DR, Powell FL, Khriza M, Martin PM, Bartoli M. Inhibition of HDAC6 Attenuates Diabetes-Induced Retinal Redox Imbalance and Microangiopathy. Antioxidants (Basel) 2020; 9:antiox9070599. [PMID: 32660051 PMCID: PMC7402090 DOI: 10.3390/antiox9070599] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 12/20/2022] Open
Abstract
We investigated the contributing role of the histone deacetylase 6 (HDAC6) to the early stages of diabetic retinopathy (DR). Furthermore, we examined the mechanism of action of HDAC6 in human retinal endothelial cells (HuREC) exposed to glucidic stress. Streptozotocin-induced diabetic rats (STZ-rats), a rat model of type 1 diabetes, were used as model of DR. HDAC6 expression and activity were increased in human diabetic postmortem donors and STZ-rat retinas and were augmented in HuREC exposed to glucidic stress (25 mM glucose). Administration of the HDAC6 specific inhibitor Tubastatin A (TS) (10 mg/kg) prevented retinal microvascular hyperpermeability and up-regulation of inflammatory markers. Furthermore, in STZ-rats, TS decreased the levels of senescence markers and rescued the expression and activity of the histone deacetylase sirtuin 1 (SIRT1), while downregulating the levels of free radicals and of the redox stress markers 4-hydroxynonenal (4-HNE) and nitrotyrosine (NT). The antioxidant effects of TS, consequent to HDAC6 inhibition, were associated with preservation of Nrf2-dependent gene expression and up-regulation of thioredoxin-1 activity. In vitro data, obtained from HuREC, exposed to glucidic stress, largely replicated the in vivo results further confirming the antioxidant effects of HDAC6 inhibition by TS in the diabetic rat retina. In summary, our data implicate HDAC6 activation in mediating hyperglycemia-induced retinal oxidative/nitrative stress leading to retinal microangiopathy and, potentially, DR.
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Affiliation(s)
- Hossameldin Abouhish
- Department of Ophthalmology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (H.A.); (M.C.T.); (D.R.G.)
- Department of Clinical Pharmacology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt;
| | - Menaka C. Thounaojam
- Department of Ophthalmology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (H.A.); (M.C.T.); (D.R.G.)
| | - Ravirajsinh N. Jadeja
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (R.N.J.); (F.L.P.); (P.M.M.)
| | - Diana R. Gutsaeva
- Department of Ophthalmology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (H.A.); (M.C.T.); (D.R.G.)
| | - Folami L. Powell
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (R.N.J.); (F.L.P.); (P.M.M.)
| | - Mohamed Khriza
- Department of Clinical Pharmacology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt;
| | - Pamela M. Martin
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (R.N.J.); (F.L.P.); (P.M.M.)
| | - Manuela Bartoli
- Department of Ophthalmology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (H.A.); (M.C.T.); (D.R.G.)
- Correspondence: ; Tel.: +706-721-9797 or +706-721-7910; Fax: +706-721-9799
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16
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Babu Varukattu N, Lin W, Vivek R, Rejeeth C, Sabarathinam S, Yao Z, Zhang H. Targeted and Intrinsic Activity of HA-Functionalized PEI-Nanoceria as a Nano Reactor in Potential Triple-Negative Breast Cancer Treatment. ACS APPLIED BIO MATERIALS 2020; 3:186-196. [PMID: 35019435 DOI: 10.1021/acsabm.9b00577] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Although there has been considerable achievement in the field of breast cancer therapeutics, tackling the disturbing issue of highly potent triple-negative breast cancer (TNBC) still remains a hurdle in cancer therapeutics. Here, for the first time we propose a poly(ethylenimine) (PEI)-mediated approach for the synthesis of hyaluronic acid (HA) tagged cerium oxide nanoparticles (CePEI-NPs) as a therapeutic agent in TNBC. Primarily, the formulated HA-CePEI-NPs upon treatment displayed superior anticancer effect by exhibiting the loss of mitochondrial membrane potential (MMP). These particles acted as a nano reactor by the generation of reactive oxygen species (ROS) during the treatment. We further evaluated the caspase activity which divulgated the activation of caspases-3 and -9 while there was a decrease in the level of Bcl-2. The treatment also resulted in the release of cytochrome c (Cyt c), and in addition, features such as pynknosis and G2/M phase arrest were also noted. Hence the nano reactor property of nano ceria in activating mitochondrial-mediated intrinsic apoptosis highlights its promising role as a nano drug for therapeutic applications in TNBC.
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Affiliation(s)
- Nipun Babu Varukattu
- Cancer Research Center, Shantou University Medical College, Shantou, Guangdong 515041,China
| | - Wan Lin
- Cancer Research Center, Shantou University Medical College, Shantou, Guangdong 515041,China
| | - Raju Vivek
- Bio-nano Therapeutics Research Laboratory, School of Life Sciences, Department of Zoology, Bharathiar University, Coimbatore 641046, India
| | - Chandrababu Rejeeth
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shanmugam Sabarathinam
- Bioprocess and Biomaterials Laboratory, Department of Microbial Biotechnology, Bharathiar University, Coimbatore 641046, India
| | - Zhimeng Yao
- Institute of Precision Cancer and Pathology, Jinan University Medical College, Guangzhou, Guangdong 510632, China
| | - Hao Zhang
- Institute of Precision Cancer and Pathology, Jinan University Medical College, Guangzhou, Guangdong 510632, China
- Cancer Research Center, Shantou University Medical College, Shantou, Guangdong 515041,China
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17
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Lin A, Giuliano CJ, Palladino A, John KM, Abramowicz C, Yuan ML, Sausville EL, Lukow DA, Liu L, Chait AR, Galluzzo ZC, Tucker C, Sheltzer JM. Off-target toxicity is a common mechanism of action of cancer drugs undergoing clinical trials. Sci Transl Med 2019; 11:eaaw8412. [PMID: 31511426 PMCID: PMC7717492 DOI: 10.1126/scitranslmed.aaw8412] [Citation(s) in RCA: 355] [Impact Index Per Article: 71.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 06/19/2019] [Accepted: 08/01/2019] [Indexed: 12/14/2022]
Abstract
Ninety-seven percent of drug-indication pairs that are tested in clinical trials in oncology never advance to receive U.S. Food and Drug Administration approval. While lack of efficacy and dose-limiting toxicities are the most common causes of trial failure, the reason(s) why so many new drugs encounter these problems is not well understood. Using CRISPR-Cas9 mutagenesis, we investigated a set of cancer drugs and drug targets in various stages of clinical testing. We show that-contrary to previous reports obtained predominantly with RNA interference and small-molecule inhibitors-the proteins ostensibly targeted by these drugs are nonessential for cancer cell proliferation. Moreover, the efficacy of each drug that we tested was unaffected by the loss of its putative target, indicating that these compounds kill cells via off-target effects. By applying a genetic target-deconvolution strategy, we found that the mischaracterized anticancer agent OTS964 is actually a potent inhibitor of the cyclin-dependent kinase CDK11 and that multiple cancer types are addicted to CDK11 expression. We suggest that stringent genetic validation of the mechanism of action of cancer drugs in the preclinical setting may decrease the number of therapies tested in human patients that fail to provide any clinical benefit.
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Affiliation(s)
- Ann Lin
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
- Stony Brook University, Stony Brook, NY 11794, USA
| | - Christopher J Giuliano
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
- Stony Brook University, Stony Brook, NY 11794, USA
| | - Ann Palladino
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - Kristen M John
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
- Hofstra University, Hempstead, NY 11549, USA
| | - Connor Abramowicz
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
- New York Institute of Technology, Glen Head, NY 11545, USA
| | - Monet Lou Yuan
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
- Syosset High School, Syosset, NY 11791, USA
| | - Erin L Sausville
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - Devon A Lukow
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
- Stony Brook University, Stony Brook, NY 11794, USA
| | - Luwei Liu
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
- Stony Brook University, Stony Brook, NY 11794, USA
| | | | | | - Clara Tucker
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
- Stony Brook University, Stony Brook, NY 11794, USA
| | - Jason M Sheltzer
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.
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18
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Wang H, Ling L, Ai L, Bai L. HDAC6 inhibition induces the failure of mouse early embryonic development. J Cell Physiol 2018; 234:8752-8759. [PMID: 30370558 DOI: 10.1002/jcp.27534] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 09/10/2018] [Indexed: 11/08/2022]
Abstract
Histone deacetylases (HDACs) have been implicated in numerous biological events. However, to date, the role of HDAC6 in early embryos remains unknown. In the current study, Tubastatin A (TubA), a potent HDAC6 inhibitor, was used to block HDAC6 activity in mouse embryos. We found that TubA exposure significantly reduced the blastocyst formation of early embryos. Confocal microscopy revealed the markedly increased chromosomal congression failure in the mouse embryos treated with the HDAC6 inhibitor. Moreover, the HDAC6 inhibition resulted in the overproduction of reactive oxygen species (ROS) in embryos. In addition, we observed the accumulation of phosphorylated γH2AX in TubA-treated embryos, indicative of the increased DNA damage. In line with this, cell apoptosis of blastocysts was frequently detected in HDAC6-deficient embryos compared with their controls. Altogether, our data indicate that HDAC6 may serve as an important regulator of chromatin structure and mitochondrial function, determining the developmental potential of the early embryos of mouse.
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Affiliation(s)
- Hui Wang
- Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Li Ling
- Department of Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Limei Ai
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Liping Bai
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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19
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Design, synthesis and characterization of potent microtubule inhibitors with dual anti-proliferative and anti-angiogenic activities. Eur J Med Chem 2018; 157:380-396. [DOI: 10.1016/j.ejmech.2018.07.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/30/2018] [Accepted: 07/16/2018] [Indexed: 11/30/2022]
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20
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Sharma N, Kumar A, Sharma PR, Qayum A, Singh SK, Dutt P, Paul S, Gupta V, Verma MK, Satti NK, Vishwakarma R. A new clerodane furano diterpene glycoside from Tinospora cordifolia triggers autophagy and apoptosis in HCT-116 colon cancer cells. JOURNAL OF ETHNOPHARMACOLOGY 2018; 211:295-310. [PMID: 28962889 DOI: 10.1016/j.jep.2017.09.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 09/15/2017] [Accepted: 09/24/2017] [Indexed: 05/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tinospora cordifolia is a miraculous ayurvedic herb used in the treatment of innumerable diseases such as diabetes, gonorrhea, secondary syphilis, anaemia, rheumatoid arthritis, dermatological diseases, cancer, gout, jaundice, asthma, leprosy, in the treatment of bone fractures, liver & intestinal disorders, purifies the blood, gives new life to the whole body; (rejuvenating herb) and many more. Recent studies have revealed the anticancer potential of this plant but not much work has been done on the anticancer chemical constituents actually responsible for its amazing anticancer effects. This prompted us to investigate this plant further for new potent anticancer molecules. AIM OF THE STUDY The present study was designed to isolate and identify new promising anticancer candidates from the aqueous alcoholic extract of T. cordifolia using bioassay-guided fractionation. MATERIALS AND METHODS The structures of the isolated compounds were determined on the basis of spectroscopic data interpretation and that of new potent anticancer molecule, TC-2 was confirmed by a single-crystal X-ray crystallographic analysis of its corresponding acetate. The in vitro anti-cancer activity of TC-2 was evaluated by SRB assay and the autophagic activity was investigated by immunofluorescence microscopy. Annexin-V FITC and PI dual staining was applied for the detection of apoptosis. The studies on Mitochondrial Membrane potential and ROS (Reactive oxygen species) production were also done. RESULTS Bioassay guided fractionation and purification of the aqueous alcoholic stem extract of Tinospora cordifolia led to the isolation of a new clerodane furano diterpene glycoside (TC-2) along with five known compounds i.e. cordifolioside A (β-D-Glucopyranoside,4-(3-hydroxy-1-propenyl)- 2,6-dimethoxyphenyl 3-O-D-apio-β-D-furanosyl) (TC-1), β-Sitosterol(TC-3), 2β,3β:15,16-Diepoxy- 4α, 6β-dihydroxy-13(16),14-clerodadiene-17,12:18,1-diolide (TC-4), ecdysterone(TC-5) and tinosporoside(TC-6). TC-2 emerged as a potential candidate for the treatment of colon cancer. CONCLUSION The overall study on the bioassay guided isolation of T.cordifolia identified and isolated a new clerodane furano diterpenoid that exhibited anticancer activity via induction of mitochondria mediated apoptosis and autophagy in HCT116 cells. We have reported a promising future candidate for treating colon cancer.
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Affiliation(s)
- Neha Sharma
- Natural Product Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India; Analytical Chemistry Division (Instrumentation), CSIR- Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Ashok Kumar
- Cancer Pharmacology Division, CSIR- Indian Institute of Integrative Medicine, Jammu 180001, India; AcSIR: Academy of Scientific and Innovative Research, Jammu- Campus, Jammu, India
| | - P R Sharma
- Cancer Pharmacology Division, CSIR- Indian Institute of Integrative Medicine, Jammu 180001, India; AcSIR: Academy of Scientific and Innovative Research, Jammu- Campus, Jammu, India
| | - Arem Qayum
- Cancer Pharmacology Division, CSIR- Indian Institute of Integrative Medicine, Jammu 180001, India; AcSIR: Academy of Scientific and Innovative Research, Jammu- Campus, Jammu, India
| | - Shashank K Singh
- Cancer Pharmacology Division, CSIR- Indian Institute of Integrative Medicine, Jammu 180001, India; AcSIR: Academy of Scientific and Innovative Research, Jammu- Campus, Jammu, India
| | - Prabhu Dutt
- Natural Product Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Satya Paul
- Department of Chemistry, University of Jammu, Jammu 180006, India
| | - Vivek Gupta
- Post- Graduate Department of Physics, University of Jammu, Jammu 180006, India
| | - M K Verma
- Analytical Chemistry Division (Instrumentation), CSIR- Indian Institute of Integrative Medicine, Jammu 180001, India
| | - N K Satti
- Natural Product Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India.
| | - R Vishwakarma
- Natural Product Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
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21
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Liu J, Luan W, Zhang Y, Gu J, Shi Y, Yang Y, Feng Z, Qi F. HDAC6 interacts with PTPN1 to enhance melanoma cells progression. Biochem Biophys Res Commun 2018; 495:2630-2636. [DOI: 10.1016/j.bbrc.2017.12.145] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 12/23/2017] [Indexed: 01/05/2023]
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22
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Lernoux M, Schnekenburger M, Dicato M, Diederich M. Anti-cancer effects of naturally derived compounds targeting histone deacetylase 6-related pathways. Pharmacol Res 2017; 129:337-356. [PMID: 29133216 DOI: 10.1016/j.phrs.2017.11.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 10/02/2017] [Accepted: 11/06/2017] [Indexed: 12/20/2022]
Abstract
Alterations of the epigenetic machinery, affecting multiple biological functions, represent a major hallmark enabling the development of tumors. Among epigenetic regulatory proteins, histone deacetylase (HDAC)6 has emerged as an interesting potential therapeutic target towards a variety of diseases including cancer. Accordingly, this isoenzyme regulates many vital cellular regulatory processes and pathways essential to physiological homeostasis, as well as tumor multistep transformation involving initiation, promotion, progression and metastasis. In this review, we will consequently discuss the critical implications of HDAC6 in distinct mechanisms relevant to physiological and cancerous conditions, as well as the anticancer properties of synthetic, natural and natural-derived compounds through the modulation of HDAC6-related pathways.
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Affiliation(s)
- Manon Lernoux
- Laboratory of Molecular and Cellular Biology of Cancer, Kirchberg Hospital, 9, Edward Steichen Street, L-2540 Luxembourg, Luxembourg
| | - Michael Schnekenburger
- Laboratory of Molecular and Cellular Biology of Cancer, Kirchberg Hospital, 9, Edward Steichen Street, L-2540 Luxembourg, Luxembourg
| | - Mario Dicato
- Laboratory of Molecular and Cellular Biology of Cancer, Kirchberg Hospital, 9, Edward Steichen Street, L-2540 Luxembourg, Luxembourg
| | - Marc Diederich
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, 08826, South Korea.
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23
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Luo L, Zhang Q, Kong X, Huang H, You W, Ke C. Differential effects of zinc exposure on male and female oysters (Crassostrea angulata) as revealed by label-free quantitative proteomics. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2017; 36:2602-2613. [PMID: 28304108 DOI: 10.1002/etc.3797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 02/01/2017] [Accepted: 03/15/2017] [Indexed: 06/06/2023]
Abstract
Oysters accumulate Zn as an adaptation to Zn exposure; however, it is not known whether male and female oysters respond differently to Zn exposure. Proteomic and real-time polymerase chain reaction analyses were used to investigate differential responses of male and female oysters (Crassostrea angulata) to Zn exposure. After exposure to 50 μg L-1 or 500 μg L-1 Zn for 30 d, gonads of female oysters accumulated more Zn than those of males, and gonadal development was accelerated in females but was abnormal in males. Differentially expressed proteins after exposure to Zn were identified and shown to function in Zn transport, Ca transport, phosphate metabolism, energy metabolism, immune regulation, oxidative stress responses, gene expression regulation, and fat metabolism. Proteins with functions in Zn transportation and storage, and multifunctional proteins, such as hemicentin-1 and histidinol dehydrogenase, were expressed at significantly higher levels in the gonads of female than male oysters after Zn exposure. Environ Toxicol Chem 2017;36:2602-2613. © 2017 SETAC.
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Affiliation(s)
- Lianzhong Luo
- Xiamen Key Laboratory of Marine Medicinal Natural Products and Cell Engineering, Xiamen Medical College, Xiamen, People's Republic of China
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, People's Republic of China
| | - Qinghong Zhang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, People's Republic of China
- School of Life Science, Xiamen University, Xiamen, People's Republic of China
| | - Xue Kong
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, People's Republic of China
- School of Life Science, Xiamen University, Xiamen, People's Republic of China
| | - Heqing Huang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, People's Republic of China
- School of Life Science, Xiamen University, Xiamen, People's Republic of China
| | - Weiwei You
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, People's Republic of China
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, People's Republic of China
| | - Caihuan Ke
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, People's Republic of China
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, People's Republic of China
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24
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Koul M, Kumar A, Deshidi R, Sharma V, Singh RD, Singh J, Sharma PR, Shah BA, Jaglan S, Singh S. Cladosporol A triggers apoptosis sensitivity by ROS-mediated autophagic flux in human breast cancer cells. BMC Cell Biol 2017; 18:26. [PMID: 28728544 PMCID: PMC5520384 DOI: 10.1186/s12860-017-0141-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 05/30/2017] [Indexed: 12/21/2022] Open
Abstract
Background Endophytes have proven to be an invaluable resource of chemically diverse secondary metabolites that act as excellent lead compounds for anticancer drug discovery. Here we report the promising cytotoxic effects of Cladosporol A (HPLC purified >98%) isolated from endophytic fungus Cladosporium cladosporioides collected from Datura innoxia. Cladosporol A was subjected to in vitro cytotoxicity assay against NCI60 panel of human cancer cells using MTT assay. We further investigated the molecular mechanism(s) of Cladosporol A induced cell death in human breast (MCF-7) cancer cells. Mechanistically early events of cell death were studied using DAPI, Annexin V-FITC staining assay. Furthermore, immunofluorescence studies were carried to see the involvement of intrinsic pathway leading to mitochondrial dysfunction, cytochrome c release, Bax/Bcl-2 regulation and flowcytometrically measured membrane potential loss of mitochondria in human breast (MCF-7) cancer cells after Cladosporol A treatment. The interplay between apoptosis and autophagy was studied by microtubule dynamics, expression of pro-apoptotic protein p21 and autophagic markers monodansylcadaverine staining and LC3b expression. Results Among NCI60 human cancer cell line panel Cladosporol A showed least IC50 value against human breast (MCF-7) cancer cells. The early events of apoptosis were characterized by phosphatidylserine exposure. It disrupts microtubule dynamics and also induces expression of pro-apoptotic protein p21. Moreover treatment of Cladosporol A significantly induced MMP loss, release of cytochrome c, Bcl-2 down regulation, Bax upregulation as well as increased monodansylcadaverine (MDC) staining and leads to LC3-I to LC3-II conversion. Conclusion Our experimental data suggests that Cladosporol A depolymerize microtubules, sensitize programmed cell death via ROS mediated autophagic flux leading to mitophagic cell death. Graphical abstract The proposed mechanism of Cladosporol A -triggered apoptotic as well as autophagic death of human breast cancer (MCF-7) cells. The figure shows that Cladosporol A induced apoptosis through ROS mediated mitochondrial pathway and increased p21 protein expression in MCF-7 cells in vitro.![]() Electronic supplementary material The online version of this article (doi:10.1186/s12860-017-0141-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mytre Koul
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific & Innovative Research (AcSIR), CSIR, New Delhi, India
| | - Ashok Kumar
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific & Innovative Research (AcSIR), CSIR, New Delhi, India
| | - Ramesh Deshidi
- Natural Product Chemistry, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific & Innovative Research (AcSIR), CSIR, New Delhi, India
| | - Vishal Sharma
- Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific & Innovative Research (AcSIR), CSIR, New Delhi, India
| | - Rachna D Singh
- Department of Conservative Dentistry & Endodontics, Indira Gandhi Govt. Dental College and Hospital, Jammu, India
| | - Jasvinder Singh
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific & Innovative Research (AcSIR), CSIR, New Delhi, India
| | - Parduman Raj Sharma
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific & Innovative Research (AcSIR), CSIR, New Delhi, India
| | - Bhahwal Ali Shah
- Natural Product Chemistry, CSIR-Indian Institute of Integrative Medicine, Jammu, India. .,Academy of Scientific & Innovative Research (AcSIR), CSIR, New Delhi, India.
| | - Sundeep Jaglan
- Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.,Academy of Scientific & Innovative Research (AcSIR), CSIR, New Delhi, India
| | - Shashank Singh
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India. .,Academy of Scientific & Innovative Research (AcSIR), CSIR, New Delhi, India.
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25
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Dangroo NA, Singh J, Rath SK, Gupta N, Qayum A, Singh S, Sangwan PL. A convergent synthesis of novel alkyne-azide cycloaddition congeners of betulinic acid as potent cytotoxic agent. Steroids 2017; 123:1-12. [PMID: 28435038 DOI: 10.1016/j.steroids.2017.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 04/11/2017] [Accepted: 04/12/2017] [Indexed: 01/23/2023]
Abstract
In an endeavour to develop potent anti-tumor agents from betulinic acid (BA), a series of C-28 derived 1,2,3-triazolyl derivatives were designed and synthesized by employing Cu(I) catalyzed Huisgen 1,3-dipolar cycloaddition reaction. All the derivatives were evaluated for cytotoxic activity by MTT assay against five different human cancer cell lines: lung (A549), colon (HCT116), prostate (PC3), pancreatic (MIA PaCa-2) and breast (T47D). The data revealed that compounds 11c, 11d, 11g, 11h and 13a possess most promising cytotoxic potential. The compound 11h was one of the most active compounds, with IC50 values in the range of 4-6µM against all the five cancer cell lines. The results of this study suggested that derivatives with free -OH (11c, 11d and 11g) and free -COOH (11h and 13a) substitutions in the triazole moiety introduced at the C-28 position significantly improved the anti-tumor activity and may be the favourable position to synthesize potent anticancer leads from BA. Introduction of a non polar alkyl groups at C-28 position (10, 12 and 14) resulted in the significant loss of the activity. Further, DAPI staining, ROS generation and wound healing experiments revealed that compound 11h induces apoptosis in HCT-116 cells.
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Affiliation(s)
- Nisar A Dangroo
- Bioorganic Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Jasvinder Singh
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-IIIM Campus, Jammu, India
| | - Santosh K Rath
- Bioorganic Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-IIIM Campus, Jammu, India
| | - Nidhi Gupta
- Bioorganic Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Arem Qayum
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-IIIM Campus, Jammu, India
| | - Shashank Singh
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-IIIM Campus, Jammu, India.
| | - Payare L Sangwan
- Bioorganic Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-IIIM Campus, Jammu, India.
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26
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HDAC4 and HDAC6 sustain DNA double strand break repair and stem-like phenotype by promoting radioresistance in glioblastoma cells. Cancer Lett 2017; 397:1-11. [PMID: 28342984 DOI: 10.1016/j.canlet.2017.03.028] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/15/2017] [Accepted: 03/15/2017] [Indexed: 12/31/2022]
Abstract
The role of histone deacetylase (HDAC) 4 and 6 in glioblastoma (GBM) radioresistance was investigated. We found that tumor samples from 31 GBM patients, who underwent temozolomide and radiotherapy combined treatment, showed HDAC4 and HDAC6 expression in 93.5% and 96.7% of cases, respectively. Retrospective clinical data analysis demonstrated that high-intensity HDAC4 and/or HDAC6 immunostaining was predictive of poor clinical outcome. In vitro experiments revealed that short hairpin RNA-mediated silencing of HDAC4 or HDAC6 radiosensitized U87MG and U251MG GBM cell lines by promoting DNA double-strand break (DSBs) accumulation and by affecting DSBs repair molecular machinery. We found that HDAC6 knock-down predisposes to radiation therapy-induced U251MG apoptosis- and U87MG autophagy-mediated cell death. HDAC4 silencing promoted radiation therapy-induced senescence, independently by the cellular context. Finally, we showed that p53WT expression contributed to the radiotherapy lethal effects and that HDAC4 or HDAC6 sustained GBM stem-like radioresistant phenotype. Altogether, these observations suggest that HDAC4 and HDAC6 are guardians of irradiation-induced DNA damages and stemness, thus promoting radioresistance, and may represent potential prognostic markers and therapeutic targets in GBM.
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27
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Shi Y, Xu L, Tang J, Fang L, Ma S, Ma X, Nie J, Pi X, Qiu A, Zhuang S, Liu N. Inhibition of HDAC6 protects against rhabdomyolysis-induced acute kidney injury. Am J Physiol Renal Physiol 2017; 312:F502-F515. [PMID: 28052874 DOI: 10.1152/ajprenal.00546.2016] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 12/29/2016] [Accepted: 12/29/2016] [Indexed: 12/18/2022] Open
Abstract
Histone deacetylase 6 (HDAC6) inhibition has been reported to protect against ischemic stroke and prolong survival after sepsis in animal models. However, it remains unknown whether HDAC6 inhibition offers a renoprotective effect after acute kidney injury (AKI). In this study, we examined the effect of tubastatin A (TA), a highly selective inhibitor of HDAC6, on AKI in a murine model of glycerol (GL) injection-induced rhabdomyolysis. Following GL injection, the mice developed severe acute tubular injury as indicated by renal dysfunction; expression of neutrophil gelatinase-associated lipocalin (NGAL), an injury marker of renal tubules; and an increase of TdT-mediated dUTP nick-end labeling (TUNEL)-positive tubular cells. These changes were companied by increased HDAC6 expression in the cytoplasm of renal tubular cells. Administration of TA significantly reduced serum creatinine and blood urea nitrogen levels as well as attenuated renal tubular damage in injured kidneys. HDAC6 inhibition also resulted in decreased expression of NGAL, reduced apoptotic cell, and inactivated caspase-3 in the kidney after acute injury. Moreover, injury to the kidney increased phosphorylation of nuclear factor (NF)-κB and expression of multiple cytokines/chemokines including tumor necrotic factor-α and interleukin-6 and monocyte chemoattractant protein-1, as well as macrophage infiltration. Treatment with TA attenuated all those responses. Finally, HDAC6 inhibition reduced the level of oxidative stress by suppressing malondialdehyde (MDA) and preserving expression of superoxide dismutase (SOD) in the injured kidney. Collectively, these data indicate that HDAC6 contributes to the pathogenesis of rhabdomyolysis-induced AKI and suggest that HDAC6 inhibitors have therapeutic potential for AKI treatment.
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Affiliation(s)
- Yingfeng Shi
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liuqing Xu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jinhua Tang
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lu Fang
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shuchen Ma
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaoyan Ma
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jing Nie
- School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Xiaoling Pi
- Department of Internal Medicine, Pudong New District Gongli Hospital, Shanghai, China
| | - Andong Qiu
- School of Life Sciences and Technology, Advanced Institute of Translational Medicine, Tongji University, Shanghai, China; and
| | - Shougang Zhuang
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Department of Medicine, Rhode Island Hospital and Brown University School of Medicine, Providence, Rhode Island
| | - Na Liu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China;
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28
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Youn GS, Lee KW, Choi SY, Park J. Overexpression of HDAC6 induces pro-inflammatory responses by regulating ROS-MAPK-NF-κB/AP-1 signaling pathways in macrophages. Free Radic Biol Med 2016; 97:14-23. [PMID: 27208785 DOI: 10.1016/j.freeradbiomed.2016.05.014] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 04/29/2016] [Accepted: 05/16/2016] [Indexed: 11/24/2022]
Abstract
Although histone deacetylase 6 (HDAC6) has been implicated in inflammatory diseases, direct involvement and its action mechanism of HDAC6 in the transcriptional regulation of pro-inflammatory genes have been unclear. In this study, we investigated the possible role of HDAC6 in the expression of pro-inflammatory mediators, indicator of macrophage activation, in RAW 264.7 cells and primary mouse macrophages. HDAC6 overexpression significantly enhanced expression of pro-inflammatory cytokines, such as TNF-α, IL-1β, and IL-6, with concomitant reduction in acetylated α-tubulin. HDAC6 overexpression significantly induced ROS generation via upregulation of NADPH oxidase expression and activity. Inhibition of ROS generation by N-acetyl cysteine, diphenyl iodonium and apocynin suppressed HDAC6-induced pro-inflammatory cytokines. An HDAC6 enzymatic inhibitor significantly inhibited ROS generation and expression of HDAC6-induced pro-inflammatory mediators, indicating the requirement of HDAC6 enzymatic activity for induction of pro-inflammatory cytokines. In addition, HDAC6 overexpression increased activation of MAPK species including ERK, JNK, and p38. Furthermore, HDAC6 overexpression resulted in activation of the NF-κB and AP-1 signaling pathways. Overall, our results provide the first evidence that HDAC6 is capable of inducing expression of pro-inflammatory genes by regulating the ROS-MAPK-NF-κB/AP-1 pathways and serves as a molecular target for inflammation.
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Affiliation(s)
- Gi Soo Youn
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, 1 Hallymdaehak-gil, Chunchon 200-702, Kangwon-Do, Republic of Korea
| | - Keun Wook Lee
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, 1 Hallymdaehak-gil, Chunchon 200-702, Kangwon-Do, Republic of Korea
| | - Soo Young Choi
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, 1 Hallymdaehak-gil, Chunchon 200-702, Kangwon-Do, Republic of Korea
| | - Jinseu Park
- Department of Biomedical Science and Research Institute for Bioscience & Biotechnology, Hallym University, 1 Hallymdaehak-gil, Chunchon 200-702, Kangwon-Do, Republic of Korea.
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29
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Aktary Z, Bertrand JU, Larue L. The WNT-less wonder: WNT-independent β-catenin signaling. Pigment Cell Melanoma Res 2016; 29:524-40. [PMID: 27311806 DOI: 10.1111/pcmr.12501] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 06/14/2016] [Indexed: 12/18/2022]
Abstract
β-catenin is known as an Armadillo protein that regulates gene expression following WNT pathway activation. However, WNT-independent pathways also activate β-catenin. During the establishment of the melanocyte lineage, β-catenin plays an important role. In the context of physiopathology, β-catenin is activated genetically or transiently in various cancers, including melanoma, where it can be found in the nucleus of tumors. In this review, we discuss alternative pathways that activate β-catenin independent of WNTs and highlight what is known regarding these pathways in melanoma. We also discuss the role of β-catenin as a transcriptional regulator in various cell types, with emphasis on the different transcription factors it associates with independent of WNT induction. Finally, the role of WNT-independent β-catenin in melanocyte development and melanomagenesis is also discussed.
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Affiliation(s)
- Zackie Aktary
- Normal and Pathological Development of Melanocytes, INSERM U1021, Institut Curie, PSL Research University, Orsay, France.,CNRS UMR 3347, Univ Paris-Sud, Univ Paris-Saclay, Orsay, France.,Equipe Labellisée Ligue Contre le Cancer, Orsay, France
| | - Juliette U Bertrand
- Normal and Pathological Development of Melanocytes, INSERM U1021, Institut Curie, PSL Research University, Orsay, France.,CNRS UMR 3347, Univ Paris-Sud, Univ Paris-Saclay, Orsay, France.,Equipe Labellisée Ligue Contre le Cancer, Orsay, France
| | - Lionel Larue
- Normal and Pathological Development of Melanocytes, INSERM U1021, Institut Curie, PSL Research University, Orsay, France. .,CNRS UMR 3347, Univ Paris-Sud, Univ Paris-Saclay, Orsay, France. .,Equipe Labellisée Ligue Contre le Cancer, Orsay, France.
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30
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Xia Y, Chen J, Gong C, Chen H, Sun J. α-Mangostin, a Natural Agent, Enhances the Response of NRAS Mutant Melanoma to Retinoic Acid. Med Sci Monit 2016; 22:1360-7. [PMID: 27104669 PMCID: PMC4844330 DOI: 10.12659/msm.898204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND The identification and use of novel compounds alone or in combination hold promise for the fight against NRAS mutant melanoma. MATERIAL AND METHODS We screened a kinase-specific inhibitor library through combining it with α-Mangostin in NRAS mutant melanoma cell line, and verified the enhancing effect of α-Mangostin through inhibition of the tumorigenesis pathway. RESULTS Within the kinase inhibitors, retinoic acid showed a significant synergistic effect with α-Mangostin. α-Mangostin also can reverse the drug resistance of retinoic acid in RARa siRNA-transduced sk-mel-2 cells. Colony assay, TUNEL staining, and the expressions of several apoptosis-related genes revealed that a-Mangostin enhanced the effect of retinoic acid-induced apoptosis. The combination treatment resulted in marked induction of ROS generation and inhibition of the AKT/S6 pathway. CONCLUSIONS These results indicate that the combination of these novel natural agents with retinoid acid may be clinically effective in NRAS mutant melanoma.
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Affiliation(s)
- Yun Xia
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Jing Chen
- Department of Oncology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Chongwen Gong
- Department of Oncology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Hongxiang Chen
- Department of Dermatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Jiaming Sun
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
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31
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Design, synthesis, and biological evaluation of novel quinazolinyl-diaryl urea derivatives as potential anticancer agents. Eur J Med Chem 2016; 107:12-25. [DOI: 10.1016/j.ejmech.2015.10.045] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 10/21/2015] [Accepted: 10/27/2015] [Indexed: 12/19/2022]
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32
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Histone Deacetylase Inhibitors Promote Mitochondrial Reactive Oxygen Species Production and Bacterial Clearance by Human Macrophages. Antimicrob Agents Chemother 2015; 60:1521-9. [PMID: 26711769 DOI: 10.1128/aac.01876-15] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 12/11/2015] [Indexed: 02/07/2023] Open
Abstract
Broad-spectrum histone deacetylase inhibitors (HDACi) are used clinically as anticancer agents, and more isoform-selective HDACi have been sought to modulate other conditions, including chronic inflammatory diseases. Mouse studies suggest that HDACi downregulate immune responses and may compromise host defense. However, their effects on human macrophage antimicrobial responses are largely unknown. Here, we show that overnight pretreatment of human macrophages with HDACi prior to challenge with Salmonella enterica serovar Typhimurium or Escherichia coli results in significantly reduced intramacrophage bacterial loads, which likely reflect the fact that this treatment regime impairs phagocytosis. In contrast, cotreatment of human macrophages with HDACi at the time of bacterial challenge did not impair phagocytosis; instead, HDACi cotreatment actually promoted clearance of intracellular S. Typhimurium and E. coli. Mechanistically, treatment of human macrophages with HDACi at the time of bacterial infection enhanced mitochondrial reactive oxygen species generation by these cells. The capacity of HDACi to promote the clearance of intracellular bacteria from human macrophages was abrogated when cells were pretreated with MitoTracker Red CMXRos, which perturbs mitochondrial function. The HDAC6-selective inhibitor tubastatin A promoted bacterial clearance from human macrophages, whereas the class I HDAC inhibitor MS-275, which inhibits HDAC1 to -3, had no effect on intracellular bacterial loads. These data are consistent with HDAC6 and/or related HDACs constraining mitochondrial reactive oxygen species production from human macrophages during bacterial challenge. Our findings suggest that, whereas long-term HDACi treatment regimes may potentially compromise host defense, selective HDAC inhibitors may have applications in treating acute bacterial infections.
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33
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HDAC6 Regulates the Chaperone-Mediated Autophagy to Prevent Oxidative Damage in Injured Neurons after Experimental Spinal Cord Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2016:7263736. [PMID: 26649145 PMCID: PMC4663006 DOI: 10.1155/2016/7263736] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 07/10/2015] [Accepted: 07/22/2015] [Indexed: 11/17/2022]
Abstract
Hypoxia-ischemia- (HI-) induced oxidative stress plays a role in secondary pathocellular processes of acute spinal cord injury (SCI) due to HI from many kinds of mechanical trauma. Increasing evidence suggests that the histone deacetylase-6 (HDAC6) plays an important role in cell homeostasis in both physiological and abnormal, stressful, pathological conditions. This paper found that inhibition of HDAC6 accelerated reactive oxygen species (ROS) generation and cell apoptosis in response to the HI. Deficiency of HDAC6 hindered the chaperone-mediated autophagy (CMA) activity to resistance of HI-induced oxidative stress. Furthermore, this study provided the experimental evidence for the potential role of HDAC6 in the regulation of CMA by affecting HSP90 acetylation. Therefore, HDAC6 plays an important role in the function of CMA pathway under the HI stress induced by SCI and it may be a potential therapeutic target in acute SCI model.
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