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Doxorubicin-induced cardiomyopathy associated with inhibition of autophagic degradation process and defects in mitochondrial respiration. Sci Rep 2019; 9:2002. [PMID: 30765730 PMCID: PMC6376057 DOI: 10.1038/s41598-018-37862-3] [Citation(s) in RCA: 117] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 12/15/2018] [Indexed: 12/21/2022] Open
Abstract
Doxorubicin (Dox) is a highly effective anticancer drug but cause acute ventricular dysfunction, and also induce late-onset cardiomyopathy and heart failure. Despite extensive studies, the pathogenic sequelae leading to the progression of Dox-associated cardiomyopathy remains unknown. We assessed temporal changes in autophagy, mitochondrial dynamics, and bioenergetics in mouse models of acute and chronic Dox-cardiomyopathy. Time course study of acute Dox-treatment showed accumulation of LC3B II in heart lysates. Autophagy flux assays confirmed that the Dox-induced accumulation of autophagosomes occurs due to blockage of the lysosomal degradation process. Dox-induced autophagosomes and autolysosome accumulation were confirmed in vivo by using GFP-LC3 and mRFP-GFP-LC3 transgenic (Tg) mice. Mitochondria isolated from acute Dox-treated hearts showed significant suppression of oxygen consumption rate (OCR). Chronic Dox-cardiotoxicity also exhibited time-dependent accumulation of LC3B II levels and increased accumulation of green puncta in GFP-LC3 Tg hearts. Mitochondria isolated from chronic Dox-treated hearts also showed significant suppression of mitochondrial OCR. The in vivo impairment of autophagic degradation process and mitochondrial dysfunction data were confirmed in vitro using cultured neonatal cardiomyocytes. Both acute and chronic Dox-associated cardiomyopathy involves a multifocal disease process resulting from autophagosomes and autolysosomes accumulation, altered expression of mitochondrial dynamics and oxidative phosphorylation regulatory proteins, and mitochondrial respiratory dysfunction.
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Marques-Aleixo I, Santos-Alves E, Torrella JR, Oliveira PJ, Magalhães J, Ascensão A. Exercise and Doxorubicin Treatment Modulate Cardiac Mitochondrial Quality Control Signaling. Cardiovasc Toxicol 2019; 18:43-55. [PMID: 28536949 DOI: 10.1007/s12012-017-9412-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The cross-tolerance effect of exercise against heart mitochondrial-mediated quality control, remodeling and death-related mechanisms associated with sub-chronic Doxorubicin (DOX) treatment is yet unknown. We therefore analyzed the effects of two distinct chronic exercise models (endurance treadmill training-TM and voluntary free wheel activity-FW) performed during the course of the sub-chronic DOX treatment on mitochondrial susceptibility to permeability transition pore (mPTP), apoptotic and autophagic signaling and mitochondrial dynamics. Male Sprague-Dawley rats were divided into six groups (n = 6 per group): saline sedentary (SAL + SED), SAL + TM (12-weeks treadmill), SAL + FW (12-weeks voluntary free-wheel), DOX + SED [7-weeks sub-chronic DOX treatment (2 mg kg-1 week-1)], DOX + TM and DOX + FW. Apoptotic signaling and mPTP regulation were followed by measuring caspase 3, 8 and 9 activities, Bax, Bcl2, CypD, ANT, and cophilin expression. Mitochondrial dynamics (Mfn1, Mfn2, OPA1 and DRP1) and auto(mito)phagy (LC3, Beclin1, Pink1, Parkin and p62)-related proteins were semi-quantified. DOX treatment results in augmented mPTP susceptibility and apoptotic signaling (caspases 3, 8 and 9 and Bax/Bcl2 ratio). Moreover, DOX decreased the expression of fusion-related proteins (Mfn1, Mfn2, OPA1), increased DRP1 and the activation of auto(mito)phagy signaling. TM and FW prevented DOX-increased mPTP susceptibility and apoptotic signaling, alterations in mitochondrial dynamics and inhibits DOX-induced increases in auto(mito)phagy signaling. Collectively, our results suggest that both used chronic exercise models performed before and during the course of sub-chronic DOX treatment limit cardiac mitochondrial-driven apoptotic signaling and regulate alterations in mitochondrial dynamics and auto(mito)phagy in DOX-treated animals.
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Affiliation(s)
- I Marques-Aleixo
- CIAFEL - Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto, Rua Dr. Plácido Costa 91, 4200-450, Porto, Portugal.
| | - E Santos-Alves
- CIAFEL - Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto, Rua Dr. Plácido Costa 91, 4200-450, Porto, Portugal.,Department of Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - J R Torrella
- Department of Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - P J Oliveira
- CNC - Centre for Neuroscience and Cell Biology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - J Magalhães
- CIAFEL - Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto, Rua Dr. Plácido Costa 91, 4200-450, Porto, Portugal
| | - A Ascensão
- CIAFEL - Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto, Rua Dr. Plácido Costa 91, 4200-450, Porto, Portugal
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Su BC, Pan CY, Chen JY. Antimicrobial Peptide TP4 Induces ROS-Mediated Necrosis by Triggering Mitochondrial Dysfunction in Wild-Type and Mutant p53 Glioblastoma Cells. Cancers (Basel) 2019; 11:cancers11020171. [PMID: 30717309 PMCID: PMC6406555 DOI: 10.3390/cancers11020171] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/16/2019] [Accepted: 01/28/2019] [Indexed: 12/20/2022] Open
Abstract
Antimicrobial peptide tilapia piscidin 4 (TP4) from Oreochromis niloticus exhibits potent bactericidal and anti-tumorigenic effects. In a variety of cancers, the mutation status of p53 is a decisive factor for therapeutic sensitivity. Therefore, we investigated the impact of p53 status on TP4-induced cytotoxicity in glioblastoma cell lines and the molecular mechanisms that govern cytotoxic effects. Both U87MG (wild-type/WT p53) and U251 (mutant p53) glioblastoma cell lines were sensitive to TP4-induced cytotoxicity. The necrosis inhibitors Necrostatin-1 and GSK’872 attenuated TP4-induced cytotoxicity, and TP4 treatment induced the release of cyclophilin A, a biomarker of necrosis. Moreover, TP4 induced mitochondrial hyperpolarization and dysfunction, which preceded the elevation of intracellular reactive oxygen species, DNA damage, and necrotic cell death in both U87MG and U251 glioblastoma cells. p38 was also activated by TP4, but did not contribute to cytotoxicity. SB202190, a specific p38 inhibitor, enhanced TP4-induced oxidative stress, mitochondrial dysfunction, and cytotoxicity, suggesting a protective role of p38. Furthermore, TP4-induced cytotoxicity, oxidative stress, phosphorylation of p38, and DNA damage were all attenuated by the mitochondrial-targeted reactive oxygen species (ROS) scavenger MitoTEMPO, or the reactive oxygen species scavenger N-acetyl-L-cysteine. Based on these data, we conclude that TP4 induces necrosis in both WT and mutant p53 glioblastoma cells through a mitochondrial ROS-dependent pathway.
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Affiliation(s)
- Bor-Chyuan Su
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, 23-10 Dahuen Road, Jiaushi, Ilan 262, Taiwan.
| | - Chieh-Yu Pan
- Department and Graduate Institute of Aquaculture, National Kaohsiung University of Science and Technology, Kaohsiung 811, Taiwan.
| | - Jyh-Yih Chen
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, 23-10 Dahuen Road, Jiaushi, Ilan 262, Taiwan.
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Abstract
Cardiotoxicity is a well-known side effect of doxorubicin (DOX), but the mechanisms leading to this phenomenon are still not completely clear. Prediction of drug-induced dysfunction onset is difficult and is still largely based on detection of cardiac troponin (cTn), a circulating marker of heart damage. In the last years, several investigations focused on the possible involvement of microRNAs (miRNAs) in DOX-induced toxicity in vitro, with contrasting results. Recently, several groups employed animal models to mimic patient’s condition, investigate the biological pathways perturbed by DOX, and identify diagnostic markers of cardiotoxicity. We reviewed the results from several studies investigating cardiac miRNAs expression in rodent models of DOX-treatment. We also discussed the data from two publications indicating the possible use of circulating miRNA as biomarkers of DOX-induced cardiotoxicity. Unfortunately, limited information was derived from these studies, as selection methods of candidate-miRNAs and heterogeneity in cardiotoxicity assessment greatly hampered the novelty and robustness of the findings. Nevertheless, at least one circulating miRNA, miR-1, showed a good potential as early biomarker of drug-mediated cardiac dysfunction onset. The use of animal models to investigate DOX-induced cardiotoxicity surely helps narrowing the gap between basic research and clinical practice. Despite this, several issues, including selection of relevant miRNAs and less-than-optimal assessment of cardiotoxicity, greatly limited the results obtained so far. Nonetheless, the association of patients-based studies with the use of preclinical models may be the key to address the many unanswered questions regarding the pathophysiology and early detection of cardiotoxicity.
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105
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Teeli AS, Leszczyński P, Krishnaswamy N, Ogawa H, Tsuchiya M, Śmiech M, Skarzynski D, Taniguchi H. Possible Mechanisms for Maintenance and Regression of Corpus Luteum Through the Ubiquitin-Proteasome and Autophagy System Regulated by Transcriptional Factors. Front Endocrinol (Lausanne) 2019; 10:748. [PMID: 31803139 PMCID: PMC6877548 DOI: 10.3389/fendo.2019.00748] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 10/16/2019] [Indexed: 12/13/2022] Open
Abstract
The corpus luteum (CL) is an important tissue of the female reproductive process which is established through ovulation of the mature follicle. Pulsatile release of prostaglandin F2α from the uterus leads to the regression of luteal cells and restarts the estrous cycle in most non-primate species. The rapid functional regression of the CL, which coincides with decrease of progesterone production, is followed by its structural regression. Although we now have a better understanding of how the CL is triggered to undergo programmed cell death, the precise mechanisms governing CL protein degradation in a very short period of luteolysis remains unknown. In this context, activation of ubiquitin-proteasome pathway (UPP), unfolded protein response (UPR) and autophagy are potential subcellular mechanisms involved. The ubiquitin-proteasome pathway (UPP) maintains tissue homeostasis in the face of both internal and external stressors. The UPP also controls physiological processes in many gonadal cells. Emerging evidence suggests that UPP dysfunction is involved in male and female reproductive tract dysfunction. Autophagy is activated when cells are exposed to different types of stressors such as hypoxia, starvation, and oxidative stress. While emerging evidence points to an important role for the UPP and autophagy in the CL, the key underlying transcriptional mechanisms have not been well-documented. In this review, we propose how CL regression may be governed by the ubiquitin-proteasome and autophagy pathways. We will further consider potential transcription factors which may regulate these events in the CL.
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Affiliation(s)
- Aamir S. Teeli
- Department of Experimental Embryology, The Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Poland
| | - Paweł Leszczyński
- Department of Experimental Embryology, The Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Poland
| | | | - Hidesato Ogawa
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Megumi Tsuchiya
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Magdalena Śmiech
- Department of Experimental Embryology, The Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Poland
| | - Dariusz Skarzynski
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
| | - Hiroaki Taniguchi
- Department of Experimental Embryology, The Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzebiec, Poland
- *Correspondence: Hiroaki Taniguchi
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Gu Y, Ju A, Jiang B, Zhang J, Man S, Liu C, Gao W. Yiqi Fumai lyophilized injection attenuates doxorubicin-induced cardiotoxicity, hepatotoxicity and nephrotoxicity in rats by inhibition of oxidative stress, inflammation and apoptosis. RSC Adv 2018; 8:40894-40911. [PMID: 35557896 PMCID: PMC9091596 DOI: 10.1039/c8ra07163b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 11/22/2018] [Indexed: 01/21/2023] Open
Abstract
Doxorubicin (DOX) is one of the most effective antineoplastic drugs, however, its organ toxicity inhibits the clinical utility. This study was aimed at investigating the protective effects of Yiqi Fumai lyophilized injection (YQFM) against DOX-induced tissue injury and exploring the mechanisms which mediated reactive oxygen species (ROS), inflammation and apoptosis. The experiment was as follows: rats were subjected to an intraperitoneal injection (i.p.) of YQFM (0.481 g kg-1, i.p.) for 12 days; DOX (5 mg kg-1, i.p.) was administered on the 4th, 8th and 12th days to achieve a cumulative dose of 15 mg kg-1. Pretreatment of YQFM significantly ameliorated intracellular damage and dysfunction of the heart, liver and kidneys via decreasing activities of injury indexes. The levels of lipid peroxidation and glutathione depletion were clearly reduced following YQFM pretreatment, meanwhile the activities of glutathione peroxidase, superoxide dismutase, and catalase were elevated. Additionally administering YQFM could mitigate the cardiotoxicity, hepatotoxicity and nephrotoxicity via reducing levels of inflammatory factors and decreasing apoptosis. Accordingly, this study indicated that YQFM attenuated DOX-induced toxicity by ameliorating organ function, decreasing ROS production, and preventing excessive inflammation and apoptosis.
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Affiliation(s)
- Yue Gu
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University Weijin Road Tianjin 300072 China +86-22-87401895 +86-22-87401895
| | - Aichun Ju
- Tasly Pride Pharmaceutical Company Limited Tianjin 300410 China
| | - Bingjie Jiang
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University Weijin Road Tianjin 300072 China +86-22-87401895 +86-22-87401895
| | - Jingze Zhang
- Department of Pharmacy, Logistics University of Chinese People's Armed Police Forces Tianjin 300309 China +86-22-84876773
| | - Shuli Man
- State Key Laboratory of Food Nutrition and Safety, College of Biotechnology, Tianjin University of Science & Technology Tianjin 300457 China +86-22-60601265
| | - Changxiao Liu
- The State Key Laboratories of Pharmacodynamics and Pharmacokinetics Tianjin 300193 China
| | - Wenyuan Gao
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University Weijin Road Tianjin 300072 China +86-22-87401895 +86-22-87401895
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107
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Mohamed EA, Ahmed HI, Zaky HS. Protective effect of irbesartan against doxorubicin-induced nephrotoxicity in rats: implication of AMPK, PI3K/Akt, and mTOR signaling pathways. Can J Physiol Pharmacol 2018; 96:1209-1217. [DOI: 10.1139/cjpp-2018-0259] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nephrotoxicity is one of the serious undesirable effects related to doxorubicin (DOX). Herein, we have investigated the potential protective effect of irbesartan (IRB) against chronic nephrotoxicity induced by DOX, and the implication of different mechanistic pathways underlying these effects. Rats were treated with either DOX (2.5 mg/kg i.p., 3 times/week) for 2 weeks, and (or) IRB (40 mg/kg, daily) for 3 weeks. IRB prohibited nephrotoxicity induced by DOX, which was evident by the increase in blood urea nitrogen and creatinine levels and histopathological changes. IRB improved DOX-induced alterations in oxidative status by diminishing lipid peroxidation and upregulating the antioxidant enzymes. Also, upon DOX treatment, the renal expression of tumor necrosis factor-α, interleukin-6, and caspase-3 were significantly increased; IRB diminished DOX-induced alterations in these parameters. Moreover, DOX significantly decreased the expression level of AMP-activated protein kinase (AMPK). Meanwhile, DOX induced activation of phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt/PKB) and mammalian target of rapamycin (mTOR) pathways that cross talked with AMPK. On the contrary, IRB successfully counterbalanced all these effects. Collectively, these outcomes suggest that the modulation of AMPK, PI3K, Akt, and mTOR pathways plays a critical role in conferring the protective effects of IRB against DOX nephrotoxicity.
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Affiliation(s)
- Eman A. Mohamed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
| | - Hebatalla I. Ahmed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
| | - Heba S. Zaky
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
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108
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Xu ZM, Li CB, Liu QL, Li P, Yang H. Ginsenoside Rg1 Prevents Doxorubicin-Induced Cardiotoxicity through the Inhibition of Autophagy and Endoplasmic Reticulum Stress in Mice. Int J Mol Sci 2018; 19:ijms19113658. [PMID: 30463294 PMCID: PMC6274738 DOI: 10.3390/ijms19113658] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 11/09/2018] [Accepted: 11/10/2018] [Indexed: 01/01/2023] Open
Abstract
Ginsenoside Rg1, a saponin that is a primary component of ginseng, has been demonstrated to protect hearts from diverse cardiovascular diseases with regulating multiple cellular signal pathways. In the present study, we investigated the protective role of ginsenoside Rg1 on doxorubicin-induced cardiotoxicity and its effects on endoplasmic reticulum stress and autophagy. After pre-treatment with ginsenoside Rg1 (50 mg/kg i.g.) for 7 days, male C57BL/6J mice were intraperitoneally injected with a single dose of doxorubicin (6 mg/kg) every 3 days for four injections. Echocardiographic and pathological findings showed that ginsenoside Rg1 could significantly reduce the cardiotoxicity induced by doxorubicin. Ginsenoside Rg1 significantly inhibited doxorubicin-induced formation of autophagosome. At the same time, ginsenoside Rg1 decreased the doxorubicin-induced cardiac microtubule-associated protein-light chain 3 and autophagy related 5 expression. Ginsenoside Rg1 can reduce endoplasmic reticulum dilation caused by doxorubicin. Compared with the doxorubicin group, the expression of cleaved activating transcription factor 6 and inositol-requiring enzyme 1 decreased in group ginsenoside Rg1. Treatment with ginsenoside Rg1 reduces the expression of TIF1 and increases the expression of glucose-regulated protein 78. In the ginsenoside Rg1 group, the expression of p-P70S6K, c-Jun N-terminal kinases 1 and Beclin1 declined. These results indicate that ginsenoside Rg1 may improve doxorubicin-induced cardiac dysfunction by inhibiting endoplasmic reticulum stress and autophagy.
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Affiliation(s)
- Zhi-Meng Xu
- State Key Laboratory of Natural Medicines and School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China.
| | - Cheng-Bin Li
- State Key Laboratory of Natural Medicines and School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China.
| | - Qing-Ling Liu
- State Key Laboratory of Natural Medicines and School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China.
| | - Ping Li
- State Key Laboratory of Natural Medicines and School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China.
| | - Hua Yang
- State Key Laboratory of Natural Medicines and School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China.
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Abuzenadah A, Al-Saedi S, Karim S, Al-Qahtani M. Role of Overexpressed Transcription Factor FOXO1 in Fatal Cardiovascular Septal Defects in Patau Syndrome: Molecular and Therapeutic Strategies. Int J Mol Sci 2018; 19:ijms19113547. [PMID: 30423812 PMCID: PMC6274780 DOI: 10.3390/ijms19113547] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 11/01/2018] [Accepted: 11/05/2018] [Indexed: 12/16/2022] Open
Abstract
Patau Syndrome (PS), characterized as a lethal disease, allows less than 15% survival over the first year of life. Most deaths owe to brain and heart disorders, more so due to septal defects because of altered gene regulations. We ascertained the cytogenetic basis of PS first, followed by molecular analysis and docking studies. Thirty-seven PS cases were referred from the Department of Pediatrics, King Abdulaziz University Hospital to the Center of Excellence in Genomic Medicine Research, Jeddah during 2008 to 2018. Cytogenetic analyses were performed by standard G-band method and trisomy13 were found in all the PS cases. Studies have suggested that genes of chromosome 13 and other chromosomes are associated with PS. We, therefore, did molecular pathway analysis, gene interaction, and ontology studies to identify their associations. Genomic analysis revealed important chr13 genes such as FOXO1, Col4A1, HMGBB1, FLT1, EFNB2, EDNRB, GAS6, TNFSF1, STARD13, TRPC4, TUBA3C, and TUBA3D, and their regulatory partners on other chromosomes associated with cardiovascular disorders, atrial and ventricular septal defects. There is strong indication of involving FOXO1 (Forkhead Box O1) gene-a strong transcription factor present on chr13, interacting with many septal defects link genes. The study was extended using molecular docking to find a potential drug lead for overexpressed FOXO1 inhibition. The phenothiazine and trifluoperazine showed efficiency to inhibit overexpressed FOXO1 protein, and could be potential drugs for PS/trisomy13 after validation.
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Affiliation(s)
- Adel Abuzenadah
- Center of Excellence in Genomic Medicine Research, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia.
- King Fahd Medical Research Center, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia.
| | - Saad Al-Saedi
- Department of Pediatric, Faculty of Medicine, King Abdulaziz University Hospital, King Abdulaziz University, P.O. Box 80215, Jeddah 21589, Saudi Arabia.
| | - Sajjad Karim
- Center of Excellence in Genomic Medicine Research, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia.
| | - Mohammed Al-Qahtani
- Center of Excellence in Genomic Medicine Research, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia.
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Wang J, Xiang B, Dolinsky VW, Kardami E, Cattini PA. Cardiac Fgf-16 Expression Supports Cardiomyocyte Survival and Increases Resistance to Doxorubicin Cytotoxicity. DNA Cell Biol 2018; 37:866-877. [PMID: 30230915 DOI: 10.1089/dna.2018.4362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The fibroblast growth factor (FGF) 16 gene is preferentially expressed by cardiomyocytes after birth with levels increasing into adulthood. Null mice and isolated heart studies suggest a role for FGF-16 in cardiac maintenance and survival, including increased resistance to doxorubicin (DOX)-induced injury. A single treatment with DOX was also shown to rapidly deplete endogenous rat FGF-16 mRNA at 6 h in both adult heart and neonatal cardiomyocytes. However, the effect of DOX on rat cardiac function at the time of decreased FGF-16 gene expression and the effect of FGF-16 availability on cardiomyocyte survival, including in the context of acute DOX cytotoxicity, have not been reported. The objective was to assess the effect of acute (6 and 24 h) DOX treatment on cardiac function and the effects of FGF-16 small interfering RNA "knockdown," as well as adenoviral overexpression, in the context of acute DOX cytotoxicity, including cardiomyocyte survival and DOX efflux transport. A significant decrease in heart systolic function was detected by echocardiography in adult rats treated with 15 mg DOX/kg at 6 h; however, unlike FGF-16, there was no change in atrial natriuretic peptide transcript levels. Both systolic and diastolic dysfunctions were observed at 24 h. In addition, specific FGF-16 "knockdown" in neonatal rat cardiomyocytes results in a significant increase in cell death. Conversely, adenoviral FGF-16 overexpression was associated with a significant decrease in cardiomyocyte injury as a result of 1 μM DOX treatment. A specific increase in efflux transporter gene expression and DOX efflux was also seen, which is consistent with a reduction in DOX cytotoxicity. Finally, the increased efflux and decreased DOX-induced damage with FGF-16 overexpression were blunted by inhibition of FGF receptor signaling. These observations are consistent with FGF-16 serving as an endogenous cardiomyocyte survival factor, which may involve a positive effect on regulating efflux transport to reduce cardiotoxicity.
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Affiliation(s)
- Jie Wang
- 1 Department of Physiology & Pathophysiology, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba , Winnipeg, Canada
| | - Bo Xiang
- 2 Department of Pharmacology & Therapeutics, and Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba , Winnipeg, Canada
| | - Vernon W Dolinsky
- 2 Department of Pharmacology & Therapeutics, and Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba , Winnipeg, Canada
| | - Elissavet Kardami
- 3 Department of Human Anatomy & Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba , Winnipeg, Canada
| | - Peter A Cattini
- 1 Department of Physiology & Pathophysiology, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba , Winnipeg, Canada
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Nah J, Fernández ÁF, Kitsis RN, Levine B, Sadoshima J. Does Autophagy Mediate Cardiac Myocyte Death During Stress? Circ Res 2018; 119:893-5. [PMID: 27688304 DOI: 10.1161/circresaha.116.309765] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Jihoon Nah
- From the Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, Newark (J.N., J.S.); Department of Internal Medicine, Center for Autophagy Research (Á.F.F., B.L.) and Howard Hughes Medical Institute (B.L.), University of Texas Southwestern Medical Center, Dallas; and Departments of Medicine (Cardiology) and Cell Biology, Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (R.N.K.)
| | - Álvaro F Fernández
- From the Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, Newark (J.N., J.S.); Department of Internal Medicine, Center for Autophagy Research (Á.F.F., B.L.) and Howard Hughes Medical Institute (B.L.), University of Texas Southwestern Medical Center, Dallas; and Departments of Medicine (Cardiology) and Cell Biology, Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (R.N.K.)
| | - Richard N Kitsis
- From the Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, Newark (J.N., J.S.); Department of Internal Medicine, Center for Autophagy Research (Á.F.F., B.L.) and Howard Hughes Medical Institute (B.L.), University of Texas Southwestern Medical Center, Dallas; and Departments of Medicine (Cardiology) and Cell Biology, Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (R.N.K.)
| | - Beth Levine
- From the Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, Newark (J.N., J.S.); Department of Internal Medicine, Center for Autophagy Research (Á.F.F., B.L.) and Howard Hughes Medical Institute (B.L.), University of Texas Southwestern Medical Center, Dallas; and Departments of Medicine (Cardiology) and Cell Biology, Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (R.N.K.)
| | - Junichi Sadoshima
- From the Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, Newark (J.N., J.S.); Department of Internal Medicine, Center for Autophagy Research (Á.F.F., B.L.) and Howard Hughes Medical Institute (B.L.), University of Texas Southwestern Medical Center, Dallas; and Departments of Medicine (Cardiology) and Cell Biology, Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (R.N.K.).
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Mousa HSE, Abdel Aal SM, Abbas NAT. Umbilical cord blood-mesenchymal stem cells and carvedilol reduce doxorubicin- induced cardiotoxicity: Possible role of insulin-like growth factor-1. Biomed Pharmacother 2018; 105:1192-1204. [PMID: 30021356 DOI: 10.1016/j.biopha.2018.06.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/08/2018] [Accepted: 06/12/2018] [Indexed: 10/28/2022] Open
Abstract
In this study, we tried to demonstrate the effects of adding human umbilical cord blood mesenchymal stem cells (hUCB-MSCs) to carvedilol in improving the doxorubicin- induced cardiotoxicity in rats. Rats were randomly divided into four groups: group 1: control group, group 2: doxorubicin untreated group, group 3: rats injected with doxorubicin and received carvedilol, and group 4: rats injected with doxorubicin and received carvedilol and stem cell-treated. Electrocardiography (ECG) was performed to assess cardiac function after animals were sacrificed. Cardiac muscle sections were examined histologically using H&E, Masson trichrome and immunohistochemically using caspase 3 immunostaining. The morphometric and statistical analysis was performed. Levels of malondialdehyde (MDA), superoxide dismutase (SOD), insulin-like growth factor (IGF-1), and vascular endothelial growth factor (VEGF) were measured. We concluded that combination of hUCB-MSCs and carvedilol markedly improves histological and immunohistochemical structure of cardiac muscle fibers and restores cardiac function in doxorubicin- induced cardiotoxicity in rats.
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Affiliation(s)
- Hanaa S E Mousa
- Department of Histology and Cell Biology, Faculty of Medicine ZagazigUniversity, Zagazig, Egypt.
| | - Sara M Abdel Aal
- Department of Histology and Cell Biology, Faculty of Medicine ZagazigUniversity, Zagazig, Egypt
| | - Noha A T Abbas
- Department of clinical Pharmacology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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113
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Song L, Qiao G, Xu Y, Ma L, Jiang W. Role of non-coding RNAs in cardiotoxicity of chemotherapy. Surg Oncol 2018; 27:526-538. [PMID: 30217315 DOI: 10.1016/j.suronc.2018.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 05/30/2018] [Accepted: 06/07/2018] [Indexed: 01/06/2023]
Abstract
The long-time paradoxical situation of non-coding RNAs (ncRNAs) has been terminated for they emerge as executive at full spectrum of gene expression and translation. More recently, it has been demonstrated that some ncRNAs apparently are associated with chemotherapy, causing cardiotoxicity, which taint long-term recovery of patients in growing body of evidence. The current review focused on up-to-date knowledge on regulation change and molecular signaling of ncRNAs, at mean time evaluate their potentials as diagnostic biomarkers or therapeutic targets to monitor and protect cardio function.
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Affiliation(s)
- Lina Song
- Department of Oncology, Shanghai Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Guanglei Qiao
- Department of Oncology, Shanghai Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yingjie Xu
- Department of Cardiology, Shanghai Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Lijun Ma
- Department of Oncology, Shanghai Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Weihua Jiang
- Department of Oncology, Shanghai Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
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114
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Yin J, Guo J, Zhang Q, Cui L, Zhang L, Zhang T, Zhao J, Li J, Middleton A, Carmichael PL, Peng S. Doxorubicin-induced mitophagy and mitochondrial damage is associated with dysregulation of the PINK1/parkin pathway. Toxicol In Vitro 2018; 51:1-10. [PMID: 29729358 DOI: 10.1016/j.tiv.2018.05.001] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/28/2018] [Accepted: 05/01/2018] [Indexed: 10/17/2022]
Abstract
The usefulness of doxorubicin (DOX), a potent anticancer agent, is limited by its cardiotoxicity. Mitochondria play a central role in DOX-induced cardiotoxicity though the precise mechanisms are still obscure. Increasing evidence indicates that excessive activation of mitophagy and mitochondrial dysfunction are key causal events leading to DOX-induced cardiac injury. The PINK1/parkin pathway has emerged as a critical pathway in regulation of mitophagy as well as mitochondrial function. The present study was aimed to investigate the role of PINK1/parkin pathway in DOX-induced mitochondrial damage and cardiotoxicity. Our results showed that DOX concentration-dependently induced cytotoxicity and mitochondrial toxic effects including mitochondrial superoxide accumulation, decreased mitochondrial membrane potential and mitochondrial DNA copy number, as well as mitochondrial ultrastructural alterations. DOX induced mitophagy as evidenced by increases of the markers of autophagosomes, LC3, Beclin 1, reduction of p62, and co-localization of LC3 in mitochondria. DOX activated PINK1/parkin pathway and promoted translocation of PINK1/parkin to mitochondria. Meanwhile, DOX inhibited the expression of PGC-1α and its downstream targets nuclear respiratory factor 1 (NRF1) and mitochondrial transcription factor A (TFAM), and reduced the expression of mitochondrial proteins. Inhibition of mitophagy by mdivi-1 was found to attenuate activation of the PINK1/parkin pathway by DOX and preserve mitochondrial biogenesis, consequently mitigating DOX-induced mitochondrial superoxide overproduction and mitochondrial dysfunction. Moreover, scavenging mitochondrial superoxide by Mito-tempo was also found to effectively attenuate activation of the PINK1/parkin pathway and rescue the cells from DOX-induced adverse effects. Taken together, these findings suggest that DOX-induced mitophagy and mitochondrial damage in cardiomyocytes are mediated, at least in part, by dysregulation of the PINK1/parkin pathway.
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Affiliation(s)
- Jian Yin
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China; Academy of Military Medicines, Aceademy of Military Sciences, Beijing 100850, China
| | - Jiabin Guo
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China.
| | - Qiang Zhang
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
| | - Lan Cui
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China
| | - Li Zhang
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China
| | - Tingfen Zhang
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China
| | - Jun Zhao
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China
| | - Jin Li
- Unilever Safety and Environmental Assurance Center, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK
| | - Alistair Middleton
- Unilever Safety and Environmental Assurance Center, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK
| | - Paul L Carmichael
- Unilever Safety and Environmental Assurance Center, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK
| | - Shuangqing Peng
- Evaluation and Research Centre for Toxicology, Institute of Disease Control and Prevention, PLA, Beijing 100071, China.
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115
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Koleini N, Kardami E. Autophagy and mitophagy in the context of doxorubicin-induced cardiotoxicity. Oncotarget 2018; 8:46663-46680. [PMID: 28445146 PMCID: PMC5542301 DOI: 10.18632/oncotarget.16944] [Citation(s) in RCA: 184] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 03/17/2017] [Indexed: 12/18/2022] Open
Abstract
Doxorubicin (Dox) is a cytotoxic drug widely incorporated in various chemotherapy protocols. Severe side effects such as cardiotoxicity, however, limit Dox application. Mechanisms by which Dox promotes cardiac damage and cardiomyocyte cell death have been investigated extensively, but a definitive picture has yet to emerge. Autophagy, regarded generally as a protective mechanism that maintains cell viability by recycling unwanted and damaged cellular constituents, is nevertheless subject to dysregulation having detrimental effects for the cell. Autophagic cell death has been described, and has been proposed to contribute to Dox-cardiotoxicity. Additionally, mitophagy, autophagic removal of damaged mitochondria, is affected by Dox in a manner contributing to toxicity. Here we will review Dox-induced cardiotoxicity and cell death in the broad context of the autophagy and mitophagy processes.
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Affiliation(s)
- Navid Koleini
- Institute of Cardiovascular Sciences, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba, Canada.,Department of Physiology and Pathophysiology, Winnipeg, Manitoba, Canada
| | - Elissavet Kardami
- Institute of Cardiovascular Sciences, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba, Canada.,Department of Physiology and Pathophysiology, Winnipeg, Manitoba, Canada.,Department of Human Anatomy and Cell Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
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116
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Song H, Feng X, Zhang M, Jin X, Xu X, Wang L, Ding X, Luo Y, Lin F, Wu Q, Liang G, Yu T, Liu Q, Zhang Z. Crosstalk between lysine methylation and phosphorylation of ATG16L1 dictates the apoptosis of hypoxia/reoxygenation-induced cardiomyocytes. Autophagy 2018; 14:825-844. [PMID: 29634390 DOI: 10.1080/15548627.2017.1389357] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Post-translational modifications of autophagy-related (ATG) genes are necessary to modulate their functions. However, ATG protein methylation and its physiological role have not yet been elucidated. The methylation of non-histone proteins by SETD7, a SET domain-containing lysine methyltransferase, is a novel regulatory mechanism to control cell protein function in response to various cellular stresses. Here we present evidence that the precise activity of ATG16L1 protein in hypoxia/reoxygenation (H/R)-treated cardiomyocytes is regulated by a balanced methylation and phosphorylation switch. We first show that H/R promotes autophagy and decreases SETD7 expression, whereas autophagy inhibition by 3-MA increases SETD7 level in cardiomyocytes, implying a tight correlation between autophagy and SETD7. Then we demonstrate that SETD7 methylates ATG16L1 at lysine 151 while KDM1A/LSD1 (lysine demethylase 1A) removes this methyl mark. Furthermore, we validate that this methylation at lysine 151 impairs the binding of ATG16L1 to the ATG12-ATG5 conjugate, leading to inhibition of autophagy and increased apoptosis in H/R-treated cardiomyocytes. However, the cardiomyocytes with shRNA-knocked down SETD7 or inhibition of SETD7 activity by a small molecule chemical, display increased autophagy and decreased apoptosis following H/R treatment. Additionally, methylation at lysine 151 inhibits phosphorylation of ATG16L1 at S139 by CSNK2 which was previously shown to be critical for autophagy maintenance, and vice versa. Together, our findings define a novel modification of ATG16L1 and highlight the importance of an ATG16L1 phosphorylation-methylation switch in determining the fate of H/R-treated cardiomyocytes.
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Affiliation(s)
- Huiwen Song
- a Department of Cardiology , Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences ; Shanghai , China.,b Longju Medical Research Center ; Key Laboratory of Basic Pharmacology of Ministry of Education ; Zunyi Medical University ; Zunyi , China
| | - Xing Feng
- b Longju Medical Research Center ; Key Laboratory of Basic Pharmacology of Ministry of Education ; Zunyi Medical University ; Zunyi , China.,c Rutgers Cancer Institute of New Jersey ; Rutgers University ; New Brunswick , NJ USA
| | - Min Zhang
- d Laboratory of Cardiovascular Immunology; Key Laboratory of Biological Targeted Therapy of the Ministry of Education; Institute of Cardiology; Union Hospital; Tongji Medical College of Huazhong University of Science and Technology ; Wuhan , China
| | - Xian Jin
- e Department of Cardiology ; Minhang Hospital ; Fudan University ; Shanghai , China
| | - Xiangdong Xu
- a Department of Cardiology , Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences ; Shanghai , China
| | - Lin Wang
- f Department of Cardiology ; Tongji Hospital ; Tongji Medical College ; Huazhong University of Science and Technology ; Wuhan , China
| | - Xue Ding
- g Department of Cardiology ; the First Affiliated Hospital ; Harbin Medical University ; Harbin , China
| | - Yunmei Luo
- b Longju Medical Research Center ; Key Laboratory of Basic Pharmacology of Ministry of Education ; Zunyi Medical University ; Zunyi , China
| | - Fengqin Lin
- b Longju Medical Research Center ; Key Laboratory of Basic Pharmacology of Ministry of Education ; Zunyi Medical University ; Zunyi , China
| | - Qin Wu
- h Key Laboratory of Basic Pharmacology of Ministry of Education ; Zunyi Medical University ; Zunyi , China
| | - Guiyou Liang
- i Department of Cardiovascular Surgery ; Affiliated Hospital of Zunyi Medical University ; Zunyi , China
| | - Tian Yu
- j Department of Anesthesia ; Affiliated Hospital of Zunyi Medical University ; Zunyi , China
| | - Qigong Liu
- f Department of Cardiology ; Tongji Hospital ; Tongji Medical College ; Huazhong University of Science and Technology ; Wuhan , China
| | - Zhiyong Zhang
- b Longju Medical Research Center ; Key Laboratory of Basic Pharmacology of Ministry of Education ; Zunyi Medical University ; Zunyi , China.,k Department of Surgery ; Robert-Wood-Johnson Medical School University Hospital ; Rutgers University ; State University of New Jersey ; New Brunswick , NJ USA
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117
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Chen H, Duo Y, Hu B, Wang Z, Zhang F, Tsai H, Zhang J, Zhou L, Wang L, Wang X, Huang L. PICT-1 triggers a pro-death autophagy through inhibiting rRNA transcription and AKT/mTOR/p70S6K signaling pathway. Oncotarget 2018; 7:78747-78763. [PMID: 27729611 PMCID: PMC5346674 DOI: 10.18632/oncotarget.12288] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 09/16/2016] [Indexed: 01/05/2023] Open
Abstract
PICT-1 was originally identified as a tumor suppressor. Here, we found that PICT-1 overexpression triggered pro-death autophagy without nucleolar disruption or p53 accumulation in U251 and MCF7 cells. Truncated PICT-1 fragments 181-346 and 1-346, which partly or totally lack nucleolar localization, showed weaker autophagy-inducing effects than full-length PICT-1 and a well-defined nucleolar mutant (181-479). Furthermore, PICT-1 partly localizes to the nucleolar fibrillar center (FC) and directly binds to ribosomal DNA (rDNA) gene loci, where it interacts with upstream binding factor (UBF). Overexpression of PICT-1 or the 181-479 mutant, but not the 1-346 or 181-346 mutants, markedly inhibited the phosphorylation of UBF and the recruitment of rRNA polymerase I (Pol I) to the rDNA promoter in response to serum stimulation, thereby suppressing rRNA transcription, suggesting that rRNA transcription inhibition might be an important contributor to PICT-1-induced autophagy. This is supported by the finding that CX-5461, a specific Pol I inhibitor, also induced autophagy. In addition, both CX-5461 and PICT-1, but not the 1-346 or 181-346 mutants, significantly suppressed the activation of the Akt/mTOR/p70S6K signaling pathway. Our data show that PICT-1 triggers pro-death autophagy through inhibition of rRNA transcription and the inactivation of AKT/mTOR/p70S6K pathway, independent of nucleolar disruption and p53 activation.
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Affiliation(s)
- Hongbo Chen
- The Shenzhen Key Lab of Gene and Antibody Therapy, Center for Biotechnology & Biomedicine, Division of Life and Health Sciences, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.,School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yanhong Duo
- Key Laboratory of Plant Cell Activities and Stress Adaptation, Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Bo Hu
- Department of Laboratory Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Zhiwei Wang
- Department of Laboratory Medicine, The Fourth Affiliated Hospital of Guangzhou Medical University, Guangzhou 511447, China
| | - Fang Zhang
- The Shenzhen Key Laboratory of Gene and Antibody Therapy, Center for Biotechnology & Biomedicine, Division of Life and Health Sciences, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
| | - Hsiangi Tsai
- The Shenzhen Key Laboratory of Gene and Antibody Therapy, Center for Biotechnology & Biomedicine, Division of Life and Health Sciences, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.,School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Jianping Zhang
- Department of Quality Inspection, Shenzhen Weiguang Biological Products Co., Ltd, Shenzhen 518107, China
| | - Lanzhen Zhou
- Department of Quality Inspection, Shenzhen Weiguang Biological Products Co., Ltd, Shenzhen 518107, China
| | - Lijun Wang
- The Shenzhen Key Laboratory of Gene and Antibody Therapy, Center for Biotechnology & Biomedicine, Division of Life and Health Sciences, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
| | - Xinyu Wang
- Key Laboratory of Plant Cell Activities and Stress Adaptation, Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Laiqiang Huang
- The Shenzhen Key Laboratory of Gene and Antibody Therapy, Center for Biotechnology & Biomedicine, Division of Life and Health Sciences, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.,School of Life Sciences, Tsinghua University, Beijing 100084, China
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118
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Marques-Aleixo I, Santos-Alves E, Oliveira PJ, Moreira PI, Magalhães J, Ascensão A. The beneficial role of exercise in mitigating doxorubicin-induced Mitochondrionopathy. Biochim Biophys Acta Rev Cancer 2018; 1869:189-199. [PMID: 29408395 DOI: 10.1016/j.bbcan.2018.01.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/09/2018] [Accepted: 01/11/2018] [Indexed: 01/07/2023]
Abstract
Doxorubicin (DOX) is a widely used antineoplastic agent for a wide range of cancers, including hematological malignancies, soft tissue sarcomas and solid tumors. However, DOX exhibits a dose-related toxicity that results in life-threatening cardiomyopathy. In addition to the heart, there is evidence that DOX toxicity extends to other organs. This general toxicity seems to be related to mitochondrial network structural, molecular and functional impairments. Several countermeasures for these negative effects have been proposed, being physical exercise, not only one of the most effective non-pharmacologic strategy but also widely recommended as booster against cancer-related fatigue. It is widely accepted that mitochondria are critical sensors of tissue functionality, both modulated by DOX and exercise. Therefore, this review focuses on the current understanding of the mitochondrial-mediated mechanisms underlying the protective effect of exercise against DOX-induced toxicity, not only limited to the cardiac tissue, but also in other tissues such as skeletal muscle, liver and brain. We here analyze recent developments regarding the beneficial effects of exercise targeting mitochondrial responsive phenotypes against redox changes, mitochondrial bioenergetics, apoptotic, dynamics and quality control signalling affected by DOX treatment.
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Affiliation(s)
- I Marques-Aleixo
- CIAFEL - Research Centre in Physical Activity, Health and Leisure, Portugal; LAMETEX - Laboratory of Exercise and Metabolism; Faculty of Psychology, Education and Sport, University Lusófona of Porto, Portugal.
| | - E Santos-Alves
- CIAFEL - Research Centre in Physical Activity, Health and Leisure, Portugal; LAMETEX - Laboratory of Exercise and Metabolism; Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Spain
| | - P J Oliveira
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, UC Biotech Building, Biocant Park, Cantanhede, Portugal
| | - P I Moreira
- CNC - Centre for Neuroscience and Cell Biology, University of Coimbra, Portugal; Institute of Physiology, Faculty of Medicine, University of Coimbra, Portugal
| | - J Magalhães
- CIAFEL - Research Centre in Physical Activity, Health and Leisure, Portugal; LAMETEX - Laboratory of Exercise and Metabolism; Faculty of Sport, University of Porto, Portugal
| | - A Ascensão
- CIAFEL - Research Centre in Physical Activity, Health and Leisure, Portugal; LAMETEX - Laboratory of Exercise and Metabolism; Faculty of Sport, University of Porto, Portugal
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119
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Shi J, Surma M, Wei L. Disruption of ROCK1 gene restores autophagic flux and mitigates doxorubicin-induced cardiotoxicity. Oncotarget 2018; 9:12995-13008. [PMID: 29560126 PMCID: PMC5849190 DOI: 10.18632/oncotarget.24457] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Accepted: 02/03/2018] [Indexed: 12/25/2022] Open
Abstract
Doxorubicin is among the essential medicines with a wide antitumor spectrum, but its clinical application is limited by its cardiotoxicity. We recently discovered that ROCK1 is a key molecule in mediating cardiac remodeling in response to various stresses. To determine the roles of ROCK1 in doxorubicin cardiotoxicity, we gave three doses of doxorubicin injections to wild type (WT) and ROCK1−/− mice with one week intervals between treatments, the cumulative dose being 24 mg/kg. ROCK1−/− mice exhibited preserved cardiac function, reduced apoptosis, autophagy and fibrosis compared to the WT mice. To further determine the cellular mechanisms, we have examined the role of ROCK1 in cardiomyocytes using cardiomyocyte-specific knockout mice, MHC-Cre/ROCK1fl/fl, which partially reproduced the cardioprotective characteristics of ROCK1−/− mice, indicating that ROCK1 in both cardiomyocytes and non-cardiomyocytes mediates doxorubicin cardiotoxicity. To elucidate the molecular mechanisms, a detailed time course study after a single doxorubicin injection at 10 mg/kg was performed in ROCK1−/− and MHC-Cre/ROCK1fl/fl mice. The molecular analysis revealed that both ROCK1−/− and MHC-Cre/ROCK1fl/fl hearts exhibited significant reduction of doxorubicin-induced early responses including increased apoptotic (Bax) and autophagic (p62/SQSTM1 and LC3-II) markers, associated with reduced Beclin 1 phosphorylation on Thr119, supporting reduced Beclin 1-mediated autophagy initiation due to increased association of Beclin 1 with Bcl 2 or Bcl-XL in these hearts compared to the WT or ROCK1fl/fl mice. These results support that ROCK1 deficiency is cardioprotective against doxorubicin-induced cardiotoxicity at least in part through reducing Beclin 1-mediated autophagy initiation in cardiomyocytes and restoring autophagic flux to ameliorate doxorubicin cardiotoxicity.
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Affiliation(s)
- Jianjian Shi
- Riley Heart Research Center, Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, USA
| | - Michelle Surma
- Riley Heart Research Center, Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, USA
| | - Lei Wei
- Riley Heart Research Center, Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, USA.,Department of Cellular and Integrative Physiology, Indiana University, School of Medicine, Indianapolis, Indiana, USA
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120
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Macroautophagy and Chaperone-Mediated Autophagy in Heart Failure: The Known and the Unknown. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:8602041. [PMID: 29576856 PMCID: PMC5822756 DOI: 10.1155/2018/8602041] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 11/22/2017] [Indexed: 02/04/2023]
Abstract
Cardiac diseases including hypertrophic and ischemic cardiomyopathies are increasingly being reported to accumulate misfolded proteins and damaged organelles. These findings have led to an increasing interest in protein degradation pathways, like autophagy, which are essential not only for normal protein turnover but also in the removal of misfolded and damaged proteins. Emerging evidence suggests a previously unprecedented role for autophagic processes in cardiac physiology and pathology. This review focuses on the major types of autophagic processes, the genes and protein complexes involved, and their regulation. It discusses the key similarities and differences between macroautophagy, chaperone-mediated autophagy, and selective mitophagy structures and functions. The genetic models available to study loss and gain of macroautophagy, mitophagy, and CMA are discussed. It defines the markers of autophagic processes, methods for measuring autophagic activities, and their interpretations. This review then summarizes the major studies of autophagy in the heart and their contribution to cardiac pathology. Some reports suggest macroautophagy imparts cardioprotection from heart failure pathology. Meanwhile, other studies find macroautophagy activation may be detrimental in cardiac pathology. An improved understanding of autophagic processes and their regulation may lead to a new genre of treatments for cardiac diseases.
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121
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Benzer F, Kandemir FM, Ozkaraca M, Kucukler S, Caglayan C. Curcumin ameliorates doxorubicin-induced cardiotoxicity by abrogation of inflammation, apoptosis, oxidative DNA damage, and protein oxidation in rats. J Biochem Mol Toxicol 2018; 32. [PMID: 29315967 DOI: 10.1002/jbt.22030] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 12/10/2017] [Accepted: 12/16/2017] [Indexed: 12/11/2022]
Abstract
Doxorubicin (DXR) is a highly effective drug for chemotherapy. However, cardiotoxicity reduces its clinical utility in humans. The present study aimed to assess the ameliorative effect of curcumin against DXR-induced cardiotoxicity in rats. Rats were subjected to oral treatment of curcumin (100 and 200 mg/kg body weight) for 7 days. Cardiotoxicity was induced by single intraperitoneal injection of DXR (40 mg/kg body weight) on the 5th day and the rats sacrificed on 8th day. Curcumin ameliorated DXR-induced lipid peroxidation, glutathione depletion, decrease in antioxidant (superoxide dismutase, catalase, and glutathione peroxidase) enzyme activities, and cardiac toxicity markers (CK-MB, LDH, and cTn-I). Curcumin also attenuated activities of Caspase-3, cyclooxygenase-2, inducible nitric oxide synthase, and levels of nuclear factor kappa-B, tumor necrosis factor-α, and interleukin-1β, and cardiac tissue damages that were induced by DXR. Moreover, curcumin decreased the expression of 8-OHdG and 3,3'-dityrosine. This study demonstrated that curcumin has a multi-cardioprotective effect due to its antioxidant, anti-inflammatory, and antiapoptotic properties.
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Affiliation(s)
- Fulya Benzer
- Department of Food Engineering, Faculty of Engineering, Munzur University, Tunceli, Turkey
| | - Fatih Mehmet Kandemir
- Department of Biochemistry, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Mustafa Ozkaraca
- Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Sefa Kucukler
- Department of Biochemistry, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Cuneyt Caglayan
- Department of Biochemistry, Faculty of Veterinary Medicine, Bingol University, Bingol, Turkey
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122
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Mohajeri M, Sahebkar A. Protective effects of curcumin against doxorubicin-induced toxicity and resistance: A review. Crit Rev Oncol Hematol 2017; 122:30-51. [PMID: 29458788 DOI: 10.1016/j.critrevonc.2017.12.005] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 10/28/2017] [Accepted: 12/11/2017] [Indexed: 02/08/2023] Open
Abstract
Doxorubicin (DOX)-induced toxicity and resistance are major obstacles in chemotherapeutic approaches. Despite effective in the treatment of numerous malignancies, some clinicians have voiced concern that DOX has the potential to cause debilitating consequences in organ tissues, especially the heart. The mechanisms of toxicity and resistance are respectively related to induction of reactive oxygen species (ROS) and up-regulation of ATP-binding cassette (ABC) transporter. Curcumin (CUR) with several biological and pharmacological properties is expected to restore DOX-mediated impairments to tissues. This review is intended to address the current knowledge on DOX adverse effects and CUR protective actions in the heart, kidneys, liver, brain, and reproductive organs. Coadministration of CUR and DOX is capable of ameliorating DOX toxicity pertained to antioxidant, apoptosis, autophagy, and mitochondrial permeability.
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Affiliation(s)
- Mohammad Mohajeri
- Department of Medical Biotechnology, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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123
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Moruno-Manchon JF, Uzor NE, Kesler SR, Wefel JS, Townley DM, Nagaraja AS, Pradeep S, Mangala LS, Sood AK, Tsvetkov AS. TFEB ameliorates the impairment of the autophagy-lysosome pathway in neurons induced by doxorubicin. Aging (Albany NY) 2017; 8:3507-3519. [PMID: 27992857 PMCID: PMC5270683 DOI: 10.18632/aging.101144] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 12/12/2016] [Indexed: 11/25/2022]
Abstract
Doxorubicin, a commonly used chemotherapy agent, induces severe cardio- and neurotoxicity. Molecular mechanisms of cardiotoxicity have been extensively studied, but mechanisms by which doxorubicin exhibits its neurotoxic properties remain unclear. Here, we show that doxorubicin impairs neuronal autophagy, leading to the accumulation of an autophagy substrate p62. Neurons treated with doxorubicin contained autophagosomes, damaged mitochondria, and lipid droplets. The brains from mice treated with pegylated liposomal doxorubicin exhibited autophagosomes, often with mitochondria, lipofuscin, and lipid droplets. Interestingly, lysosomes were less acidic in doxorubicin-treated neurons. Overexpression of the transcription factor EB (TFEB), which controls the autophagy-lysosome axis, increased survival of doxorubicin-treated neurons. 2-Hydroxypropyl-β-cyclodextrin (HPβCD), an activator of TFEB, also promoted neuronal survival, decreased the levels of p62, and lowered the pH in lysosomes. Taken together, substantial changes induced by doxorubicin contribute to neurotoxicity, cognitive disturbances in cancer patients and survivors, and accelerated brain aging. The TFEB pathway might be a new approach for mitigating damage of neuronal autophagy caused by doxorubicin.
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Affiliation(s)
- Jose Felix Moruno-Manchon
- Department of Neurobiology and Anatomy, The University of Texas McGovern Medical School at Houston, Houston, TX 77030, USA
| | - Ndidi-Ese Uzor
- Department of Neurobiology and Anatomy, The University of Texas McGovern Medical School at Houston, Houston, TX 77030, USA.,The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Shelli R Kesler
- Department of Neuro-Oncology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jeffrey S Wefel
- Department of Neuro-Oncology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Debra M Townley
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Archana Sidalaghatta Nagaraja
- Department of Gynecologic Oncology and Reproductive Medicine, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Center for RNA Interference and Non-Coding RNA, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Department of Cancer Biology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Sunila Pradeep
- Department of Gynecologic Oncology and Reproductive Medicine, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Center for RNA Interference and Non-Coding RNA, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Department of Cancer Biology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lingegowda S Mangala
- Department of Gynecologic Oncology and Reproductive Medicine, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Center for RNA Interference and Non-Coding RNA, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Department of Cancer Biology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Anil K Sood
- Department of Gynecologic Oncology and Reproductive Medicine, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Center for RNA Interference and Non-Coding RNA, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.,Department of Cancer Biology, the University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Andrey S Tsvetkov
- Department of Neurobiology and Anatomy, The University of Texas McGovern Medical School at Houston, Houston, TX 77030, USA.,The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
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124
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Wang H, Wang H, Liang EY, Zhou LX, Dong ZL, Liang P, Weng QF, Yang M. Thrombopoietin protects H9C2 cells from excessive autophagy and apoptosis in doxorubicin-induced cardiotoxicity. Oncol Lett 2017; 15:839-848. [PMID: 29403560 PMCID: PMC5780751 DOI: 10.3892/ol.2017.7410] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 10/12/2017] [Indexed: 01/10/2023] Open
Abstract
Cardiac toxicity has been the major concern when using doxorubicin (DOX) in cancer therapy. Thrombopoietin (TPO) protects cardiac cells from DOX-induced cell damage; however, its molecular mechanism remains exclusive. The anti-autophagic and anti-apoptotic effects of TPO upon DOX treatment were studied in the cardiac H9C2 cell line, with bafilomycin A1 treatment as a positive control for autophagy inhibition. Cell viability was measured by Cell Counting Kit-8 assay in different treatment groups. The mRNA and/or protein levels of apoptotic markers and autophagy-associated factors were detected. The mean number of microtubule-associated protein 1A/1B-light chain 3 (LC3) puncta per cell was quantified to indicate autophagosomes and autolysosomes, of which the ones co-stained with lysosomal-associated membrane protein 1 were considered as autolysosomes. DOX treatment (5 µg/ml, 24 h) significantly impaired H9C2 cell viability compared with the control, while TPO pretreatment (10 ng/ml, 36 h) improved cell viability upon DOX treatment. DOX exposure markedly increased LC3 puncta in H9C2 cells, and TPO pretreatment reduced the number of autophagosomes, but showed no significant inhibitory effect on autolysosome formation. The autophagy inhibition by TPO upon DOX treatment was confirmed according to protein quantification of LC3-II and nucleoporin 62. TPO also suppressed autophagy-promoting protein Beclin-1, and elevated the anti-autophagic factors GATA-binding protein-4 and B cell lymphoma-2. Furthermore, TPO reduced DOX-induced apoptosis in H9C2 cells, as reflected by the amount changes of caspase-3. Taken together, these results revealed that TPO has a protective role in H9C2 cells from DOX-induced autophagy as well as apoptosis, and indicated that TPO may act as a cardioprotective drug in DOX-treated patients.
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Affiliation(s)
- Han Wang
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Hua Wang
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - En-Yu Liang
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Li-Xia Zhou
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Zhan-Ling Dong
- Department of Physiology, Hainan Medical College, Haikou, Hainan 571199, P.R. China
| | - Ping Liang
- Department of Physiology, Hainan Medical College, Haikou, Hainan 571199, P.R. China
| | - Qi-Fang Weng
- Department of Physiology, Hainan Medical College, Haikou, Hainan 571199, P.R. China
| | - Mo Yang
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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125
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McLaughlin D, Zhao Y, O'Neill KM, Edgar KS, Dunne PD, Kearney AM, Grieve DJ, McDermott BJ. Signalling mechanisms underlying doxorubicin and Nox2 NADPH oxidase-induced cardiomyopathy: involvement of mitofusin-2. Br J Pharmacol 2017; 174:3677-3695. [PMID: 28261787 PMCID: PMC5647180 DOI: 10.1111/bph.13773] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 02/27/2017] [Accepted: 03/01/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND PURPOSE The anthracycline doxorubicin (DOX), although successful as a first-line cancer treatment, induces cardiotoxicity linked with increased production of myocardial ROS, with Nox2 NADPH oxidase-derived superoxide reported to play a key role. The aim of this study was to identify novel mechanisms underlying development of cardiac remodelling/dysfunction further to DOX-stimulated Nox2 activation. EXPERIMENTAL APPROACH Nox2-/- and wild-type (WT) littermate mice were administered DOX (12 mg·kg-1 over 3 weeks) prior to study at 4 weeks. Detailed mechanisms were investigated in murine HL-1 cardiomyocytes, employing a robust model of oxidative stress, gene silencing and pharmacological tools. KEY RESULTS DOX-induced cardiac dysfunction, cardiomyocyte remodelling, superoxide production and apoptosis in WT mice were attenuated in Nox2-/- mice. Transcriptional analysis of left ventricular tissue identified 152 differentially regulated genes (using adjusted P < 0.1) in DOX-treated Nox2-/- versus WT mice, and network analysis highlighted 'Cell death and survival' as the biological function most significant to the dataset. The mitochondrial membrane protein, mitofusin-2 (Mfn2), appeared as a strong candidate, with increased expression (1.5-fold), confirmed by qPCR (1.3-fold), matching clear published evidence of promotion of cardiomyocyte cell death. In HL-1 cardiomyocytes, targeted siRNA knockdown of Nox2 decreased Mfn2 protein expression, but not vice versa. While inhibition of Nox2 activity along with DOX treatment attenuated its apoptotic and cytotoxic effects, reduced apoptosis after Mfn2 silencing reflected a sustained cytotoxic response and reduced cell viability. CONCLUSIONS AND IMPLICATIONS DOX-induced and Nox2-mediated up-regulation of Mfn2, rather than contributing to cardiomyocyte dysfunction through apoptotic pathways, appears to promote a protective mechanism. LINKED ARTICLES This article is part of a themed section on New Insights into Cardiotoxicity Caused by Chemotherapeutic Agents. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.21/issuetoc.
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Affiliation(s)
- Declan McLaughlin
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - Youyou Zhao
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - Karla M O'Neill
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - Kevin S Edgar
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - Philip D Dunne
- Centre for Cancer Research and Cell BiologyQueen's University BelfastBelfastUK
| | - Anna M Kearney
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - David J Grieve
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
| | - Barbara J McDermott
- Centre for Experimental Medicine, Wellcome‐Wolfson BuildingQueen's University BelfastBelfastUK
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Abstract
Autophagy is an evolutionarily conserved mechanism by which cytoplasmic elements are degraded intracellularly. Autophagy has also emerged as a major regulator of cardiac homeostasis and function. Autophagy preserves cardiac structure and function under baseline conditions and is activated during stress, limiting damage under most conditions. It reduces injury and preserves cardiac function during ischemia. It also reduces chronic ischemic remodeling and mediates the cardiac adaptation to pressure overload by restricting misfolded protein accumulation, mitochondrial dysfunction, and oxidative stress. Impairment of autophagy is involved in the development of diabetes and aging-induced cardiac abnormalities. Autophagy defects contribute to the development of cardiac proteinopathy and doxorubicin-induced cardiomyopathy. However, massive activation of autophagy may be detrimental for the heart in certain stress conditions, such as reperfusion injury. In this review, we discuss recent evidence supporting the important role of autophagy and mitophagy in the regulation of cardiac homeostasis and adaptation to stress.
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Affiliation(s)
- Sebastiano Sciarretta
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, 04100 Latina, Italy.,Department of AngioCardioNeurology, IRCCS Neuromed, 86077 Pozzilli, Italy
| | - Yasuhiro Maejima
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University, Graduate School of Medical and Dental Sciences, Tokyo 113-8510, Japan
| | - Daniela Zablocki
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers New Jersey Medical School, Newark, New Jersey 07103, USA;
| | - Junichi Sadoshima
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers New Jersey Medical School, Newark, New Jersey 07103, USA;
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127
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Bharathi Priya L, Baskaran R, Huang CY, Vijaya Padma V. Neferine modulates IGF-1R/Nrf2 signaling in doxorubicin treated H9c2 cardiomyoblasts. J Cell Biochem 2017; 119:1441-1452. [PMID: 28731223 DOI: 10.1002/jcb.26305] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 07/20/2017] [Indexed: 12/31/2022]
Abstract
Doxorubicin (DOX) induced cardiotoxicity is a major problem during chemotherapy of cancers. DOX-mediated suppression of type 1 IGF receptor (IGF-1R) signaling leads to cardiac dysfunction. Neferine, a bisbezylisoquinoline alkaloid from the seed embryos of Nelumbo nucifera Gaertn possesses a distinct range of pharmacological properties. Herewith, the present study attempts to elucidate the protective role of neferine against DOX induced toxicity in H9c2 rat cardiomyoblast cell line model. DOX-treated H9c2 cells significantly increased mitochondrial superoxide generation, depleted cellular antioxidant status, suppressed the activation of IGF-1R signaling via PI3K/Akt/mTOR and induced autophagy by the activation of ULK1, Beclin1, Atg7, and LC3B. Neferine pre-treatment activated IGF-1R signaling, improved cellular antioxidant pool, increased the expression of down-stream targets of IGF-1R, such as PI3K/Akt/mTOR, inhibited mitochondrial superoxide generation and autophagy significantly with the induction of Nrf2 translocation and expressions of HO1 and SOD1. Our study suggests the use of neferine for amelioration of DOX-mediated cardiotoxicity.
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Affiliation(s)
- Lohanathan Bharathi Priya
- Translational Research Laboratory, Department of Biotechnology, School of Biotechnology and Genetic Engineering, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Rathinasamy Baskaran
- National Institute of Cancer Research, National Health Research Institutes, Zhunan, Miaoli County, Taiwan
| | - Chih-Yang Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Graduate Institute of Chinese Medical Science, China Medical University, Taichung, Taiwan.,Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - Viswanadha Vijaya Padma
- Translational Research Laboratory, Department of Biotechnology, School of Biotechnology and Genetic Engineering, Bharathiar University, Coimbatore, Tamil Nadu, India.,Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
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128
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“In vivo self-assembled” nanoprobes for optimizing autophagy-mediated chemotherapy. Biomaterials 2017; 141:199-209. [DOI: 10.1016/j.biomaterials.2017.06.042] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/20/2017] [Accepted: 06/29/2017] [Indexed: 12/31/2022]
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129
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Johnson R, Shabalala S, Louw J, Kappo AP, Muller CJF. Aspalathin Reverts Doxorubicin-Induced Cardiotoxicity through Increased Autophagy and Decreased Expression of p53/mTOR/p62 Signaling. Molecules 2017; 22:molecules22101589. [PMID: 28937626 PMCID: PMC6151817 DOI: 10.3390/molecules22101589] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 09/18/2017] [Accepted: 09/19/2017] [Indexed: 12/20/2022] Open
Abstract
Doxorubicin (Dox) is an effective chemotherapeutic agent used in the treatment of various cancers. Its clinical use is often limited due to its potentially fatal cardiotoxic side effect. Increasing evidence indicates that tumour protein p53 (p53), adenosine monophosphate-activated protein kinase (AMPK), nucleoporin p62 (p62), and the mammalian target of rapamycin (mTOR) are critical mediators of Dox-induced apoptosis, and subsequent dysregulation of autophagy. Aspalathin, a polyphenolic dihydrochalcone C-glucoside has been shown to activate AMPK while decreasing the expression of p53. However, the role that aspalathin could play in the inhibition of Dox-induced cardiotoxicity through increased autophagy flux remained unexplored. H9c2 cardiomyocytes and Caov-3 ovarian cancer cells were cultured in Dulbecco’s Modified Eagle’s medium and treated with or without Dox for five days. Thereafter, cells exposed to 0.2 µM Dox were co-treated with either 20 µM Dexrazozane (Dexra) or 0.2 µM aspalathin (ASP) daily for 5 days. Results obtained showed that ASP mediates its cytoprotective effect in a p53-dependent manner, by increasing the Bcl-2/Bax ratio and decreasing apoptosis. The latter effect was diminished through ASP-induced activation of autophagy-related genes (Atgs) with an associated decrease in p62 through induction of AMPK and Fox01. Furthermore, we showed that ASP was able to potentiate this effect without decreasing the anti-cancer efficacy of Dox, as could be observed in Caov-3 ovarian cancer cells. Taken together, the data presented in this study provides a credible mechanism by which ASP co-treatment could protect the myocardium from Dox-induced cardiotoxicity.
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Affiliation(s)
- Rabia Johnson
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (MRC), Tygerberg 7505, South Africa.
- Division of Medical Physiology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa.
| | - Samukelisiwe Shabalala
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (MRC), Tygerberg 7505, South Africa.
- Department of Biochemistry and Microbiology, University of Zululand, Kwadlangezwa 3886, South Africa.
| | - Johan Louw
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (MRC), Tygerberg 7505, South Africa.
- Department of Biochemistry and Microbiology, University of Zululand, Kwadlangezwa 3886, South Africa.
| | - Abidemi Paul Kappo
- Department of Biochemistry and Microbiology, University of Zululand, Kwadlangezwa 3886, South Africa.
| | - Christo John Frederick Muller
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (MRC), Tygerberg 7505, South Africa.
- Division of Medical Physiology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa.
- Department of Biochemistry and Microbiology, University of Zululand, Kwadlangezwa 3886, South Africa.
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130
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Su BC, Huang HN, Lin TW, Hsiao CD, Chen JY. Epinecidin-1 protects mice from LPS-induced endotoxemia and cecal ligation and puncture-induced polymicrobial sepsis. Biochim Biophys Acta Mol Basis Dis 2017; 1863:3028-3037. [PMID: 28882626 DOI: 10.1016/j.bbadis.2017.08.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 08/28/2017] [Accepted: 08/31/2017] [Indexed: 01/07/2023]
Abstract
The antimicrobial peptide, epinecidin-1 (Epi), was identified from Epinephelus coioides and may have clinical application for treating sepsis. Epi has been shown to ameliorate antibiotic-resistant bacteria-induced sepsis in mice, but further evaluation in mixed-flora models and a description of the protective mechanisms are essential to establish this peptide as a potential therapeutic. Therefore, we first tested the protective effects of Epi against polymicrobial sepsis-induced bactericidal infection, inflammation and lung injury that result from cecal ligation and puncture in mice. Furthermore, since lipopolysaccharide (LPS) is a key inducer of inflammation during bacterial infection and sepsis, we also tested the LPS-antagonizing activity and related mechanisms of Epi-mediated protection in mice with LPS-induced endotoxemia and LPS-treated Raw264.7 mouse macrophage cells. Epi rescued mice from both polymicrobial sepsis and endotoxemia after delayed administration and suppressed both lung and systemic inflammatory responses, while attenuating lung injury and diminishing bacterial load. In vitro studies revealed that Epi suppressed LPS-induced inflammatory cytokine production. Mechanistically, Epi disrupted the interaction between LPS and LPS binding protein, competed with LPS for binding on the cell surface, and inhibited Toll-like receptor 4 endocytosis, resulting in inhibition of LPS-induced reactive oxygen species/p38/Akt/NF-κB signaling and subsequent cytokine production. Overall, our results demonstrate that Epi is a promising therapeutic agent for endotoxemia and polymicrobial sepsis.
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Affiliation(s)
- Bor-Chyuan Su
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, Jiaushi, Ilan, Taiwan
| | - Han-Ning Huang
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, Jiaushi, Ilan, Taiwan
| | - Tai-Wen Lin
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan; Molecular Cell Biology, Taiwan International Graduate Program, Graduate Institute of Life Sciences, National Defense Medical Center and Academia Sinica, Taipei, Taiwan
| | | | - Jyh-Yih Chen
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, Jiaushi, Ilan, Taiwan.
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131
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Shabalala S, Muller C, Louw J, Johnson R. Polyphenols, autophagy and doxorubicin-induced cardiotoxicity. Life Sci 2017; 180:160-170. [DOI: 10.1016/j.lfs.2017.05.003] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 04/27/2017] [Accepted: 05/02/2017] [Indexed: 01/07/2023]
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132
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Apigenin Attenuates Adriamycin-Induced Cardiomyocyte Apoptosis via the PI3K/AKT/mTOR Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:2590676. [PMID: 28684964 PMCID: PMC5480054 DOI: 10.1155/2017/2590676] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 03/10/2017] [Accepted: 04/19/2017] [Indexed: 11/18/2022]
Abstract
Treatment with Adriamycin (ADR) is one of the major causes of chemotherapy-induced cardiotoxicity and therefore is the principal limiting factor in the effectiveness of chemotherapy for cancer patients. Apigenin (API) has been shown to play a cardioprotective role. The present study examined the effect of API on ADR-induced cardiotoxicity in mice. Sixty male Kunming mice were randomly divided into 4 groups: a control group, ADR model group, low-dose API treatment group (125 mg·kg−1), and high-dose API treatment group (250 mg·kg−1). Blood samples were taken to evaluate a spectrum of myocardial enzymes. Cardiomyocyte apoptosis was measured using a TUNEL assay, and cardiomyocyte autophagy was observed using electron microscopy. Moreover, apoptosis-related proteins, such as Bax and Bcl-2, autophagy-related proteins, including Beclin1 and LC3B, and PI3K/AKT/mTOR pathway-related proteins were examined with western blot. Our results demonstrate that ADR caused an increase in the serum levels of cardiac injury markers and enhanced cardiomyocyte apoptosis and autophagy. API administration prevented the effects associated with ADR-induced cardiotoxicity in mice and inhibited ADR-induced apoptosis and autophagy. API also promoted PI3K/AKT/mTOR pathway activity in ADR-treated mice. In conclusion, API may have a protective effect against ADR-induced cardiotoxicity by inhibiting apoptosis and autophagy via activation of the PI3K/AKT/mTOR pathway.
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133
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Chen Z, Zhang S, Guo C, Li J, Sang W. Downregulation of miR-200c protects cardiomyocytes from hypoxia-induced apoptosis by targeting GATA-4. Int J Mol Med 2017; 39:1589-1596. [PMID: 28440427 DOI: 10.3892/ijmm.2017.2959] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 03/22/2017] [Indexed: 11/05/2022] Open
Abstract
Hypoxia-induced cardiomyocyte apoptosis plays an important role in the development of ischemic heart disease. MicroRNAs (miRNAs or miRs) are emerging as critical regulators of hypoxia-induced cardiomyocyte apoptosis. miR-200c is an miRNA that has been reported to be related to apoptosis in various pathological processes; however, its role in hypoxia‑induced cardiomyocyte apoptosis remains unclear. In the present study, we aimed to investigate the potential role and underlying mechanism of miR-200c in regulating hypoxia‑induced cardiomyocyte apoptosis. We found that miR-200c was significantly upregulated by hypoxia in cardiomyocytes, as detected by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). The lactate dehydrogenase, MTT, Annexin V/propidium iodide apoptosis and caspase-3 activity assays showed that downregulation of miR-200c markedly improved cell survival and suppressed the apoptosis of cardiomyocytes in response to hypoxia. Bioinformatics analysis and the dual-luciferase reporter assay demonstrated that miR-200c directly targeted the 3'-untranslated region of GATA-4, an important transcription factor for cardiomyocyte survival. RT-qPCR and western blot analysis showed that suppression of miR-200c significantly increased GATA-4 expression. Furthermore, downregulation of miR-200c upregulated the expression of the anti-apoptotic gene Bcl-2. However, the protective effects against hypoxia induced by the downregulation of miR‑200c were significantly abolished by GATA-4 knockdown. Taken together, our results suggest that downregulation of miR-200c protects cardiomyocytes from hypoxia-induced apoptosis by targeting GATA-4, providing a potential therapeutic molecular target for the treatment of ischemic heart disease.
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Affiliation(s)
- Zhigang Chen
- Department of Cardiology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Shaoli Zhang
- Department of Cardiology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Changlei Guo
- Department of Cardiology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Jianhua Li
- Department of Cardiology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Wenfeng Sang
- Department of Internal Medicine Nursing, College of Nursing, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
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134
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Bartlett JJ, Trivedi PC, Pulinilkunnil T. Autophagic dysregulation in doxorubicin cardiomyopathy. J Mol Cell Cardiol 2017; 104:1-8. [DOI: 10.1016/j.yjmcc.2017.01.007] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 01/12/2017] [Accepted: 01/16/2017] [Indexed: 12/22/2022]
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135
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UVRAG Deficiency Exacerbates Doxorubicin-Induced Cardiotoxicity. Sci Rep 2017; 7:43251. [PMID: 28225086 PMCID: PMC5320807 DOI: 10.1038/srep43251] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 01/23/2017] [Indexed: 02/07/2023] Open
Abstract
Doxorubicin (DOX) is an effective chemotherapeutic drug in the treatment of various types of cancers. However, its clinical application has been largely limited by potential development of cardiotoxicity. Previously we have shown that ultra-violet radiation resistance-associated gene (UVRAG), an autophagy-related protein, is essential for the maintenance of autophagic flux in the heart under physiological conditions. Here, we sought to determine the role of UVRAG-mediated autophagy in DOX-induced cardiotoxicity. Mouse models of acute or chronic DOX-induced cardiotoxicity were established. UVRAG deficiency exacerbated DOX-induced mortality and cardiotoxicity manifested by increased cytoplasmic vacuolization, enhanced collagen accumulation, elevated serum activities of lactate dehydrogenase and myocardial muscle creatine kinase, higher ROS levels, aggravated apoptosis and more depressed cardiac function. Autophagic flux was impaired in DOX-induced cardiotoxicity. UVRAG deficiency aggravated impaired autophagic flux in DOX-induced cardiotoxicity. Intermittent fasting restored autophagy and ameliorated pathological alterations of DOX-induced cardiotoxicity. Collectively, our data suggest that UVRAG deficiency exacerbates DOX-induced cardiotoxicity, at least in part, through aggravation of DOX-induced impaired autophagic flux. Intermittent fasting, which restores blunted autophagic flux and ameliorates pathology in the mouse models of DOX-induced cardiotoxicity, may be used as a potential preventive or therapeutic approach for DOX cardiotoxicity.
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Ma Y, Yang L, Ma J, Lu L, Wang X, Ren J, Yang J. Rutin attenuates doxorubicin-induced cardiotoxicity via regulating autophagy and apoptosis. Biochim Biophys Acta Mol Basis Dis 2017; 1863:1904-1911. [PMID: 28069395 DOI: 10.1016/j.bbadis.2016.12.021] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 12/01/2016] [Accepted: 12/22/2016] [Indexed: 10/20/2022]
Abstract
Doxorubicin as anticancer agent can cause dose-dependent cardiotoxicity and heart failure in the long term. Rutin as a polyphenolic flavonoid has been illustrated to protect hearts from diverse cardiovascular diseases. Its function is known to be related to its antioxidant and antiinflammatory activity which may regulate multiple cellular signal pathways. However, the role of rutin on doxorubicin-induced cardiotoxicity has yet to be discovered. In this study, we explored the protective role of rutin on doxorubicin-induced heart failure and elucidated the potential mechanisms of protective effects of rutin against cardiomyocyte death. We analyzed cardiac tissues at the time point of 8weeks after doxorubicin treatment. The results by echocardiography, TUNEL staining, Masson's trichrome staining as well as Western blot analysis revealed that doxorubicin induced remarkable cardiac dysfunction and cardiotoxicity in mice hearts and cardiomyocytes, which were alleviated by rutin treatment. Western blot analysis indicated that the underlying mechanisms included inhibition excessive autophagy and apoptosis mediated by Akt activation. Collectively, our findings suggest that suppression of autophagy and apoptosis by administration of rutin could attenuate doxorubicin-induced cardiotoxicity, which enhances our knowledge to explore new drugs and strategies for combating this devastating side effect induced by doxorubicin. This article is part of a Special Issue entitled: Genetic and epigenetic control of heart failure - edited by Jun Ren & Megan Yingmei Zhang.
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Affiliation(s)
- Yanyan Ma
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Lifang Yang
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Jipeng Ma
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Linhe Lu
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Xiaowu Wang
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Jun Ren
- College of Health Sciences, University of Wyoming, Laramie, WY 82071, USA.
| | - Jian Yang
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
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Wang J, Jin Y, Cattini PA. Expression of the Cardiac Maintenance and Survival Factor FGF-16 Gene Is Regulated by Csx/Nkx2.5 and Is an Early Target of Doxorubicin Cardiotoxicity. DNA Cell Biol 2016; 36:117-126. [PMID: 27929351 DOI: 10.1089/dna.2016.3507] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The fibroblast growth factor (FGF) 16 gene (Fgf-16) is preferentially expressed by neonatal cardiomyocytes after birth, with levels increasing into adulthood. Null mice and isolated heart studies suggest a role for FGF-16 in cardiac maintenance and survival, including increased resistance to doxorubicin (DOX)-induced injury. However, the effect of DOX on endogenous FGF-16 synthesis and specifically regulation of cardiac Fgf-16 expression has not been reported. Here we assess the effect of DOX on FGF-16 RNA levels and stability as well as promoter activity and use sequence analysis, knockdown, and overexpression to investigate the role of cardiac transcription factor(s) implicated in the response. Endogenous FGF-16 RNA levels were reduced >70% in 8-week-old rats treated with 15 mg DOX/kg for 6 h. This was modeled in neonatal rat cardiomyocyte cultures, where an equivalent decrease was also seen within 6 h of 1 μM DOX treatment. Six kilobases of mouse Fgf-16 upstream flanking and promoter DNA was also assessed for DOX responsiveness in transfected cardiomyocytes. A decrease in FGF-16 promoter activity was seen with only 747 base pairs containing the Fgf-16 TATA box that includes a putative and highly conserved binding site for the cardiac transcription factor Csx/Nkx2.5. There was also no effect of DOX on FGF-16 RNA stability, consistent with transcriptional control. Levels and binding of Csx/Nkx2.5 to the FGF-16 promoter were reduced with DOX treatment. Knockdown of Csx/Nkx2.5 specifically decreased endogenous FGF-16 RNA and protein levels, whereas Csx/Nkx2.5 overexpression stimulated levels, and increased resistance to the rapid DOX-induced depletion of FGF-16. These observations indicate that Fgf-16 expression is directly regulated by Csx/Nkx2.5 in neonatal cardiomyocytes, and a negative effect of DOX on Csx/Nkx2.5 and, thus, endogenous FGF-16 synthesis may contribute indirectly to its cardiotoxic effects. Targeting FGF-16 levels could, however, offer increased resistance to cardiac injury.
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Affiliation(s)
- Jie Wang
- Department of Physiology & Pathophysiology, University of Manitoba , Winnipeg, Canada
| | - Yan Jin
- Department of Physiology & Pathophysiology, University of Manitoba , Winnipeg, Canada
| | - Peter A Cattini
- Department of Physiology & Pathophysiology, University of Manitoba , Winnipeg, Canada
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Doxorubicin impairs cardiomyocyte viability by suppressing transcription factor EB expression and disrupting autophagy. Biochem J 2016; 473:3769-3789. [PMID: 27487838 DOI: 10.1042/bcj20160385] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 08/03/2016] [Indexed: 12/11/2022]
Abstract
Doxorubicin (DOX) is an effective anti-cancer agent. However, DOX treatment increases patient susceptibility to dilated cardiomyopathy. DOX predisposes cardiomyocytes to insult by suppressing mitochondrial energy metabolism, altering calcium flux, and disrupting proteolysis and proteostasis. Prior studies have assessed the role of macroautophagy in DOX cardiotoxicity; however, limited studies have examined whether DOX mediates cardiac injury through dysfunctions in inter- and/or intra-lysosomal signaling events. Lysosomal signaling and function is governed by transcription factor EB (TFEB). In the present study, we hypothesized that DOX caused myocyte injury by impairing lysosomal function and signaling through negative regulation of TFEB. Indeed, we found that DOX repressed cellular TFEB expression, which was associated with impaired cathepsin proteolytic activity across in vivo, ex vivo, and in vitro models of DOX cardiotoxicity. Furthermore, we observed that loss of TFEB was associated with reduction in macroautophagy protein expression, inhibition of autophagic flux, impairments in lysosomal cathepsin B activity, and activation of cell death. Restoration and/or activation of TFEB in DOX-treated cardiomyocytes prevented DOX-induced suppression of cathepsin B activity, reduced DOX-mediated reactive oxygen species (ROS) overproduction, attenuated activation of caspase-3, and improved cellular viability. Collectively, loss of TFEB inhibits lysosomal autophagy, rendering cardiomyocytes susceptible to DOX-induced proteotoxicity and injury. Our data reveal a novel mechanism wherein DOX primes cardiomyocytes for cell death by depleting cellular TFEB.
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Pizarro M, Troncoso R, Martínez GJ, Chiong M, Castro PF, Lavandero S. Basal autophagy protects cardiomyocytes from doxorubicin-induced toxicity. Toxicology 2016; 370:41-48. [DOI: 10.1016/j.tox.2016.09.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 09/15/2016] [Accepted: 09/21/2016] [Indexed: 10/21/2022]
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Gao M, Xu Y, Qiu L. Sensitization of multidrug-resistant malignant cells by liposomes co-encapsulating doxorubicin and chloroquine through autophagic inhibition. J Liposome Res 2016; 27:151-160. [PMID: 27250110 DOI: 10.1080/08982104.2016.1185731] [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] [Indexed: 02/06/2023]
Abstract
Adenosine triphosphate (ATP)-binding cassette (ABC) transporters play a key role in the development of multidrug resistance (MDR) in cancer cells. P-glycoprotein (P-gp) and multidrug resistance-associated protein 1 (MRP1) are important proteins in this superfamily which are widely expressed on the membranes of multidrug resistance (MDR) cancer cells. Besides, upregulation of cellular autophagic responses is considered a contributing factor for MDR in cancer cells. We designed a liposome system co-encapsulating a chemotherapeutic drug (doxorubicin hydrochloride, DOX) and a typical autophagy inhibitior (chloroquine phosphate, CQ) at a weight ratio of 1:2 and investigated its drug resistance reversal mechanism. MTT assay showed that the IC50 of DOX/CQ co-encapsulated liposome in DOX-resistant human breast cancer cells (MCF7/ADR) was 4.7 ± 0.2 μM, 5.7-fold less than that of free DOX (26.9 ± 1.9 μM), whereas it was 19.5-fold in doxorubicin-resistant human acute myelocytic leukemia cancer cells (HL60/ADR) (DOX/CQ co-encapsulated liposome 1.2 ± 0.1 μM, free DOX 23.4 ± 2.8 μM). The cellular uptake of DOX increased upon addition of free CQ, indicating that CQ may interact with P-gp and MRP1; however, the expressions of P-gp and MRP1 remained unchanged. In contrast, the expression of the autophagy-related protein LC3-II increased remarkably. Therefore, the mechanism of MDR reversal may be closely related to autophagic inhibition. Evaluation of anti-tumor activity was achieved in an MCF-7/ADR multicellular tumor spheroid model and transgenic zebrafish model. DOX/CQ co-encapsulated liposome exerted a better anti-tumor effect in both models than that of liposomal DOX or DOX alone. These findings suggest that encapsulating CQ with DOX in liposomes significantly improves the sensitivity of DOX in DOX-resistant cancer cells.
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Affiliation(s)
- Menghua Gao
- b College of Pharmaceutical Sciences, Zhejiang University , Hangzhou , China
| | - Yuzhen Xu
- b College of Pharmaceutical Sciences, Zhejiang University , Hangzhou , China
| | - Liyan Qiu
- a Ministry of Education (MOE) Key Laboratory of Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University , Hangzhou , China and
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Curcumin Downregulates Phosphate Carrier and Protects against Doxorubicin Induced Cardiomyocyte Apoptosis. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1980763. [PMID: 27127780 PMCID: PMC4835619 DOI: 10.1155/2016/1980763] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Revised: 02/17/2016] [Accepted: 03/13/2016] [Indexed: 01/21/2023]
Abstract
Aim. To explore the effects of curcumin on phosphate carrier (PiC) and its role in protection against doxorubicin induced myocyte toxicity. Methods. Using H9c2 cell line, the cardiotoxic effect of doxorubicin and its mitigation by curcumin were studied. H9c2 cells were cultured with doxorubicin and/or curcumin at various concentrations. Analysis for apoptosis of H9c2 was done using flow cytometry. Confocal laser scanning microscopy was used to record the fluorescence intensity ratios and to determine the mitochondrial permeability transition pore (MPTP) opening state. Oxidative stress was measured using glutathione level, superoxide dismutase activities, and malondialdehyde content. The effect of doxorubicin and curcumin on PiC gene expression was measured by real-time PCR. Results. Curcumin decreased mRNA of PiC and was partly protective against oxidative stress, loss of mitochondrial transmembrane potential, and apoptosis induced by doxorubicin. Interestingly, the effect was not clearly dose dependent and the concentration of 12 mg/L was more efficient than 15 and 10 mg/L. Conclusion. Curcumin downregulates PiC and partly protects against doxorubicin induced oxidative stress and myocyte apoptosis.
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Zhang TG, Wang YM, Zhao J, Xia MY, Peng SQ, Ikejima T. Induction of protective autophagy against apoptosis in HepG2 cells by isoniazid independent of the p38 signaling pathway. Toxicol Res (Camb) 2016; 5:963-972. [PMID: 30090405 DOI: 10.1039/c5tx00470e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 04/01/2016] [Indexed: 12/21/2022] Open
Abstract
Isoniazid (INH), one of the first-line anti-tuberculosis drugs, is adversely associated with hepatotoxicity in the clinic. However, the detailed mechanism of this side effect is still unclear. The traditional theory that cytochrome P450 2E1 is involved in INH-induced hepatotoxicity remains controversial, therefore other mechanisms by which INH exerts hepatotoxicity need to be investigated. In the current study, we showed that in vitro treatment of human hepatocarcinoma HepG2 cells with INH induced caspase-dependent apoptosis through extrinsic and intrinsic pathways. It was characterized by the increased population of apoptotic cells using Annexin V/propidium iodide (PI) double staining by flow cytometry, and by the activation of caspases 8, 9, 3 and poly (ADP-ribose)-polymerase (PARP) proteins by western blotting. INH treatment also induced autophagy as shown by the upregulated levels of microtubule-associated protein 1 light chain 3-II (LC3-II), increased GFP-LC3 punctates, and elevated monodansylcadaverine (MDC) fluorescence intensity. The measurement of the autophagic flux using chloroquine (CQ) confirmed that INH stimulated autophagy but did not inhibit it by impairing lysosomal degradation. The blockage of autophagy with CQ exacerbated INH-induced apoptosis significantly. Further study showed that INH treatment down-regulated the protein phosphorylation of the mammalian target of rapamycin (mTOR), the key negative regulator of autophagy. In addition, INH induced p38 signaling activation. SB203580, a p38 inhibitor, effectively enhanced INH-induced apoptosis by increasing the cleavages of caspases 9, 3 and PARP, but did not affect autophagy. In summary, we firstly found that INH induced a protective autophagy which was associated with the inhibition of the mTOR pathway, and that INH induced p38 signaling activation to inhibit apoptosis by down-regulation of caspases 9, 3 and PARP pathways, but not that of autophagy. Thus, activation of autophagy and p38 signaling is presumably a therapeutic strategy for INH-induced hepatotoxicity.
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Affiliation(s)
- Tian-Guang Zhang
- China-Japan Research Institute of Medical and Pharmaceutical Sciences , Shenyang Pharmaceutical University , 103 Wenhua Road , Shenyang 110016 , P.R. China . ; ; Tel: +86 24 2384 4463.,Evaluation and Research Center for Toxicology , Institute of Disease Control and Prevention , Academy of Military Medical Sciences , 20 Dongdajie Street , Fengtai District , Beijing 100071 , P.R. China . ; ; Tel: +86 1066948462
| | - Yi-Mei Wang
- Evaluation and Research Center for Toxicology , Institute of Disease Control and Prevention , Academy of Military Medical Sciences , 20 Dongdajie Street , Fengtai District , Beijing 100071 , P.R. China . ; ; Tel: +86 1066948462
| | - Jun Zhao
- Evaluation and Research Center for Toxicology , Institute of Disease Control and Prevention , Academy of Military Medical Sciences , 20 Dongdajie Street , Fengtai District , Beijing 100071 , P.R. China . ; ; Tel: +86 1066948462
| | - Ming-Yu Xia
- China-Japan Research Institute of Medical and Pharmaceutical Sciences , Shenyang Pharmaceutical University , 103 Wenhua Road , Shenyang 110016 , P.R. China . ; ; Tel: +86 24 2384 4463
| | - Shuang-Qing Peng
- Evaluation and Research Center for Toxicology , Institute of Disease Control and Prevention , Academy of Military Medical Sciences , 20 Dongdajie Street , Fengtai District , Beijing 100071 , P.R. China . ; ; Tel: +86 1066948462
| | - Takashi Ikejima
- China-Japan Research Institute of Medical and Pharmaceutical Sciences , Shenyang Pharmaceutical University , 103 Wenhua Road , Shenyang 110016 , P.R. China . ; ; Tel: +86 24 2384 4463
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Time-Dependent Changes in Apoptosis Upon Autophagy Inhibition in Astrocytes Exposed to Oxygen and Glucose Deprivation. Cell Mol Neurobiol 2016; 37:223-234. [DOI: 10.1007/s10571-016-0363-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 03/08/2016] [Indexed: 12/19/2022]
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144
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Li DL, Wang ZV, Ding G, Tan W, Luo X, Criollo A, Xie M, Jiang N, May H, Kyrychenko V, Schneider JW, Gillette TG, Hill JA. Doxorubicin Blocks Cardiomyocyte Autophagic Flux by Inhibiting Lysosome Acidification. Circulation 2016; 133:1668-87. [PMID: 26984939 DOI: 10.1161/circulationaha.115.017443] [Citation(s) in RCA: 315] [Impact Index Per Article: 39.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Accepted: 03/03/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND The clinical use of doxorubicin is limited by cardiotoxicity. Histopathological changes include interstitial myocardial fibrosis and the appearance of vacuolated cardiomyocytes. Whereas dysregulation of autophagy in the myocardium has been implicated in a variety of cardiovascular diseases, the role of autophagy in doxorubicin cardiomyopathy remains poorly defined. METHODS AND RESULTS Most models of doxorubicin cardiotoxicity involve intraperitoneal injection of high-dose drug, which elicits lethargy, anorexia, weight loss, and peritoneal fibrosis, all of which confound the interpretation of autophagy. Given this, we first established a model that provokes modest and progressive cardiotoxicity without constitutional symptoms, reminiscent of the effects seen in patients. We report that doxorubicin blocks cardiomyocyte autophagic flux in vivo and in cardiomyocytes in culture. This block was accompanied by robust accumulation of undegraded autolysosomes. We go on to localize the site of block as a defect in lysosome acidification. To test the functional relevance of doxorubicin-triggered autolysosome accumulation, we studied animals with diminished autophagic activity resulting from haploinsufficiency for Beclin 1. Beclin 1(+/-) mice exposed to doxorubicin were protected in terms of structural and functional changes within the myocardium. Conversely, animals overexpressing Beclin 1 manifested an amplified cardiotoxic response. CONCLUSIONS Doxorubicin blocks autophagic flux in cardiomyocytes by impairing lysosome acidification and lysosomal function. Reducing autophagy initiation protects against doxorubicin cardiotoxicity.
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Affiliation(s)
- Dan L Li
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Zhao V Wang
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Guanqiao Ding
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Wei Tan
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Xiang Luo
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Alfredo Criollo
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Min Xie
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Nan Jiang
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Herman May
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Viktoriia Kyrychenko
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Jay W Schneider
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Thomas G Gillette
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX
| | - Joseph A Hill
- From Division of Cardiology (D.L.L., Z.V.W., G.D., X.L., A.C., M.X., N.J., H.M., V.K., J.W.S., T.G.G., J.A.H.) and Department of Molecular Biology (W.T., J.A.H.), UT Southwestern Medical Center, Dallas, TX.
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Pihlajoki M, Färkkilä A, Soini T, Heikinheimo M, Wilson DB. GATA factors in endocrine neoplasia. Mol Cell Endocrinol 2016; 421:2-17. [PMID: 26027919 PMCID: PMC4662929 DOI: 10.1016/j.mce.2015.05.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 04/26/2015] [Accepted: 05/09/2015] [Indexed: 02/07/2023]
Abstract
GATA transcription factors are structurally-related zinc finger proteins that recognize the consensus DNA sequence WGATAA (the GATA motif), an essential cis-acting element in the promoters and enhancers of many genes. These transcription factors regulate cell fate specification and differentiation in a wide array of tissues. As demonstrated by genetic analyses of mice and humans, GATA factors play pivotal roles in the development, homeostasis, and function of several endocrine organs including the adrenal cortex, ovary, pancreas, parathyroid, pituitary, and testis. Additionally, GATA factors have been shown to be mutated, overexpressed, or underexpressed in a variety of endocrine tumors (e.g., adrenocortical neoplasms, parathyroid tumors, pituitary adenomas, and sex cord stromal tumors). Emerging evidence suggests that GATA factors play a direct role in the initiation, proliferation, or propagation of certain endocrine tumors via modulation of key developmental signaling pathways implicated in oncogenesis, such as the WNT/β-catenin and TGFβ pathways. Altered expression or function of GATA factors can also affect the metabolism, ploidy, and invasiveness of tumor cells. This article provides an overview of the role of GATA factors in endocrine neoplasms. Relevant animal models are highlighted.
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Affiliation(s)
- Marjut Pihlajoki
- Children's Hospital, Helsinki University Central Hospital, University of Helsinki, 00290 Helsinki, Finland
| | - Anniina Färkkilä
- Children's Hospital, Helsinki University Central Hospital, University of Helsinki, 00290 Helsinki, Finland; Department of Obstetrics and Gynecology, Helsinki University Central Hospital, University of Helsinki, 00290 Helsinki, Finland
| | - Tea Soini
- Children's Hospital, Helsinki University Central Hospital, University of Helsinki, 00290 Helsinki, Finland
| | - Markku Heikinheimo
- Children's Hospital, Helsinki University Central Hospital, University of Helsinki, 00290 Helsinki, Finland; Department of Pediatrics, St. Louis Children's Hospital, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - David B Wilson
- Department of Pediatrics, St. Louis Children's Hospital, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA.
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146
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Palumbo C, De Luca A, Rosato N, Forgione M, Rotili D, Caccuri AM. c-Jun N-terminal kinase activation by nitrobenzoxadiazoles leads to late-stage autophagy inhibition. J Transl Med 2016; 14:37. [PMID: 26847645 PMCID: PMC4743117 DOI: 10.1186/s12967-016-0796-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Accepted: 01/20/2016] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND Nitrobenzoxadiazole derivatives (NBDs), including NBDHEX and the recently developed MC3181, are promising anticancer agents able to target glutathione transferase and inhibit both its catalytic activity and ability to sequester TNF-receptor associated factor 2 (TRAF2) and c-Jun N-terminal kinase (JNK). NBDs have been shown to impair the growth and survival of a broad-spectrum of tumor types, in vitro and in vivo. Herein, we evaluated the effects of the new compound MC3181 on U-2OS osteosarcoma cells and investigated the impact of both NBDHEX and MC3181 on autophagy. METHODS Cell viability was evaluated by sulforhodamine B assay. The dissociation of the TRAF2-GSTP1-1 complex was detected by proximity ligation assay, while the phospho-activation of JNK was assessed by western blotting. The effects of NBDs on autophagy were evaluated by GFP-LC3 puncta formation, western blotting for LC3-II and p62, and LC3 turnover assay in the presence of bafilomycin A1. The role of JNK in the reduction of autophagic flux caused by NBDs was investigated using JNK1 shRNA-transfected cells. Fluorogenic caspase activity assay and flow cytometric analysis of DNA content were used to determine the cytotoxic effects of NBDs on JNK1-silenced cells. RESULTS Similar to NBDHEX, MC3181 reduced viability and activated TRAF2/JNK signaling in U-2OS cells. Moreover, NBDs induced the accumulation of autophagic vesicles and LC3-II while reducing both basal and nutritional stress-induced autophagic flux. Furthermore, increased levels of both LC3-II and the autophagy selective substrate p62 were observed in different tumor cell lines treated with NBDs, the concurrent increase of these markers being consistent with an impairment of autophagosome clearance. Autophagy inhibition by NBDs required JNK activity: NBDs caused autophagy inhibition and caspase-3 activation in JNK-positive U-2OS, but no autophagic flux inhibition or caspase-3 activation in JNK-silenced cells. CONCLUSIONS Our demonstration that NBDs can act as late-phase autophagy inhibitors opens new opportunities to fully exploit their therapeutic potential. This may not rely solely on their effectiveness in inducing cell cycle arrest and apoptosis, but also on their ability to weaken the capacity of tumor cells to endure stress conditions via autophagy. In addition, this study provides evidence that JNK can participate in impairing autophagy.
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Affiliation(s)
- Camilla Palumbo
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy.
| | - Anastasia De Luca
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy.
| | - Nicola Rosato
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy. .,The NAST Centre for Nanoscience and Nanotechnology and Innovative Instrumentation, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133, Rome, Italy.
| | - Mariantonietta Forgione
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy. .,Center for Life Nano Science@Sapienza, Italian Institute of Technology, Viale Regina Elena 291, 00161, Rome, Italy.
| | - Dante Rotili
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy.
| | - Anna Maria Caccuri
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy. .,The NAST Centre for Nanoscience and Nanotechnology and Innovative Instrumentation, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133, Rome, Italy.
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Bernard A, Jin M, Xu Z, Klionsky DJ. A large-scale analysis of autophagy-related gene expression identifies new regulators of autophagy. Autophagy 2015; 11:2114-2122. [PMID: 26649943 DOI: 10.1080/15548627.2015.1099796] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Autophagy is a pathway mediating vacuolar degradation and recycling of proteins and organelles, which plays crucial roles in cellular physiology. To ensure its proper cytoprotective function, the induction and amplitude of autophagy are tightly regulated, and defects in its regulation are associated with various diseases. Transcriptional control of autophagy is a critical aspect of autophagy regulation, which remains largely unexplored. In particular, very few transcription factors involved in the activation or repression of autophagy-related gene expression have been characterized. To identify such regulators, we analyzed the expression of representative ATG genes in a large collection of DNA-binding mutant deletion strains in growing conditions as well as after nitrogen or glucose starvation. This analysis identified several proteins involved in the transcriptional control of ATG genes. Further analyses showed a correlation between variations in expression and autophagy magnitude, thus identifying new positive and negative regulators of the autophagy pathway. By providing a detailed analysis of the regulatory network of the ATG genes our study paves the way for future research on autophagy regulation and signaling.
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Affiliation(s)
- Amélie Bernard
- a Life Sciences Institute , and the Department of Molecular ; Cellular and Developmental Biology; University of Michigan ; Ann Arbor , MI USA
| | - Meiyan Jin
- a Life Sciences Institute , and the Department of Molecular ; Cellular and Developmental Biology; University of Michigan ; Ann Arbor , MI USA
| | - Ziheng Xu
- a Life Sciences Institute , and the Department of Molecular ; Cellular and Developmental Biology; University of Michigan ; Ann Arbor , MI USA
| | - Daniel J Klionsky
- a Life Sciences Institute , and the Department of Molecular ; Cellular and Developmental Biology; University of Michigan ; Ann Arbor , MI USA
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148
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Therapeutic targeting of autophagy in cardiovascular disease. J Mol Cell Cardiol 2015; 95:86-93. [PMID: 26602750 DOI: 10.1016/j.yjmcc.2015.11.019] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 11/13/2015] [Accepted: 11/17/2015] [Indexed: 12/31/2022]
Abstract
Autophagy is an evolutionarily ancient process of intracellular catabolism necessary to preserve cellular homeostasis in response to a wide variety of stresses. In the case of post-mitotic cells, where cell replacement is not an option, finely tuned quality control of cytoplasmic constituents and organelles is especially critical. And due to the ubiquitous and critical role of autophagic flux in the maintenance of cell health, it comes as little surprise that perturbation of the autophagic process is observed in multiple disease processes. A large body of preclinical evidence suggests that autophagy is a double-edged sword in cardiovascular disease, acting in either beneficial or maladaptive ways, depending on the context. In light of this, the autophagic machinery in cardiomyocytes and other cardiovascular cell types has been proposed as a potential therapeutic target. Here, we summarize current knowledge regarding the dual functions of autophagy in cardiovascular disease. We go on to analyze recent evidence suggesting that titration of autophagic flux holds potential as a novel treatment strategy.
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149
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Angsutararux P, Luanpitpong S, Issaragrisil S. Chemotherapy-Induced Cardiotoxicity: Overview of the Roles of Oxidative Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:795602. [PMID: 26491536 PMCID: PMC4602327 DOI: 10.1155/2015/795602] [Citation(s) in RCA: 177] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 05/17/2015] [Indexed: 02/02/2023]
Abstract
Chemotherapy-induced cardiotoxicity is a serious complication that poses a serious threat to life and limits the clinical use of various chemotherapeutic agents, particularly the anthracyclines. Understanding molecular mechanisms of chemotherapy-induced cardiotoxicity is a key to effective preventive strategies and improved chemotherapy regimen. Although no reliable and effective preventive treatment has become available, numerous evidence demonstrates that chemotherapy-induced cardiotoxicity involves the generation of reactive oxygen species (ROS). This review provides an overview of the roles of oxidative stress in chemotherapy-induced cardiotoxicity using doxorubicin, which is one of the most effective chemotherapeutic agents against a wide range of cancers, as an example. Current understanding in the molecular mechanisms of ROS-mediated cardiotoxicity will be explored and discussed, with emphasis on cardiomyocyte apoptosis leading to cardiomyopathy. The review will conclude with perspectives on model development needed to facilitate further progress and understanding on chemotherapy-induced cardiotoxicity.
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Affiliation(s)
- Paweorn Angsutararux
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Sudjit Luanpitpong
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Surapol Issaragrisil
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
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150
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Gu J, Hu W, Zhang DD. Resveratrol, a polyphenol phytoalexin, protects against doxorubicin-induced cardiotoxicity. J Cell Mol Med 2015; 19:2324-8. [PMID: 26177159 PMCID: PMC4594674 DOI: 10.1111/jcmm.12633] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 05/20/2015] [Indexed: 12/31/2022] Open
Abstract
Doxorubicin is the mainstay of treatment for various haematological malignancies and solid tumours. However, its clinical application may be hampered by dose-dependent cardiotoxicity. The mechanism of doxorubicin-induced cardiotoxicity may involve various signalling pathways including free radical generation, peroxynitrite formation, calcium overloading, mitochondrial dysfunction and alteration in apoptosis and autophagy. Interestingly, the use of resveratrol in combination with doxorubicin has been reported to prevent cardiac toxicity as well as to exert a synergistic effect against tumour cells both in vivo and in vitro. Thus, the aim of this review is to summarize current knowledge and to elucidate the protective effect of resveratrol in doxorubicin-induced cardiotoxicity.
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Affiliation(s)
- Jun Gu
- Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Department of Cardiology, Shanghai Minhang Hospital, Fudan University, Shanghai, China
| | - Wei Hu
- Department of Cardiology, Shanghai Minhang Hospital, Fudan University, Shanghai, China
| | - Da-dong Zhang
- Department of Cardiology, Shanghai Minhang Hospital, Fudan University, Shanghai, China
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