301
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Li WQ, Wang Z, Hao S, He H, Wan Y, Zhu C, Sun LP, Cheng G, Zheng SY. Mitochondria-Targeting Polydopamine Nanoparticles To Deliver Doxorubicin for Overcoming Drug Resistance. ACS APPLIED MATERIALS & INTERFACES 2017; 9:16793-16802. [PMID: 28481505 DOI: 10.1021/acsami.7b01540] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Mitochondria play a critical role in diverse cellular processes, such as energy production and apoptosis regulation. The mitochondria-targeted drug delivery is becoming a potential novel strategy for overcoming drug resistance in cancer therapy. Herein, we synthesize nature-inspired dopamine-derived polydopamine (PDA) nanoparticles. Using triphenylphosphonium (TPP) as the mitochondrial penetration molecule to improve the target efficiency, we synthesize poly(ethylene glycol) (PEG)-modified PDA (PDA-PEG) and TPP-functionalized PEG-modified PDA (PDA-PEG-TPP) nanoparticles. Then anticancer drug doxorubicin (DOX) was loaded on PDA-PEG and PDA-PEG-TPP (PDA-PEG-DOX and PDA-PEG-TPP-DOX) nanoparticles, which are apt to deliver DOX to cell nuclei and mitochondria, respectively. To mimic the repeated anticancer drug treatment in clinical cases, we repeatedly treated the MDA-MD-231 cancer cells for a long time using DOX-loaded nanoparticles and find that the mitochondria targeting PDA-PEG-TPP-DOX has higher potential to overcome the drug resistance than the regular delivery nanoparticles PDA-PEG-DOX. These results indicate the promising potential of applying PDA-PEG-TPP-DOX nanoparticles in mitochondria-targeted drug delivery to overcome the drug resistance in long-time anticancer chemotherapy.
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Affiliation(s)
- Wen-Qing Li
- Department of Biomedical Engineering and Material Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Zhigang Wang
- Department of Biomedical Engineering and Material Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Sijie Hao
- Department of Biomedical Engineering and Material Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Hongzhang He
- Department of Biomedical Engineering and Material Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Yuan Wan
- Department of Biomedical Engineering and Material Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Chuandong Zhu
- Department of Biomedical Engineering and Material Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Li-Ping Sun
- Department of Biomedical Engineering and Material Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Gong Cheng
- Department of Biomedical Engineering and Material Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Si-Yang Zheng
- Department of Biomedical Engineering and Material Research Institute, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
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302
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Mahrouf-Yorgov M, Augeul L, Da Silva CC, Jourdan M, Rigolet M, Manin S, Ferrera R, Ovize M, Henry A, Guguin A, Meningaud JP, Dubois-Randé JL, Motterlini R, Foresti R, Rodriguez AM. Mesenchymal stem cells sense mitochondria released from damaged cells as danger signals to activate their rescue properties. Cell Death Differ 2017; 24:1224-1238. [PMID: 28524859 PMCID: PMC5520168 DOI: 10.1038/cdd.2017.51] [Citation(s) in RCA: 187] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 03/05/2017] [Accepted: 03/07/2017] [Indexed: 12/11/2022] Open
Abstract
Mesenchymal stem cells (MSCs) protect tissues against cell death induced by ischemia/reperfusion insults. This therapeutic effect seems to be controlled by physiological cues released by the local microenvironment following injury. Recent lines of evidence indicate that MSC can communicate with their microenvironment through bidirectional exchanges of mitochondria. In particular, in vitro and in vivo studies report that MSCs rescue injured cells through delivery of their own mitochondria. However, the role of mitochondria conveyed from somatic cells to MSC remains unknown. By using a co-culture system consisting of MSC and distressed somatic cells such as cardiomyocytes or endothelial cells, we showed that mitochondria from suffering cells acted as danger-signaling organelles that triggered the anti-apoptotic function of MSC. We demonstrated that foreign somatic-derived mitochondria were engulfed and degraded by MSC, leading to induction of the cytoprotective enzyme heme oxygenase-1 (HO-1) and stimulation of mitochondrial biogenesis. As a result, the capacity of MSC to donate their mitochondria to injured cells to combat oxidative stress injury was enhanced. We found that similar mechanisms - activation of autophagy, HO-1 and mitochondrial biogenesis - occurred after exposure of MSC to exogenous mitochondria isolated from somatic cells, strengthening the idea that somatic mitochondria alert MSC of a danger situation and subsequently promote an adaptive reparative response. In addition, the cascade of events triggered by the transfer of somatic mitochondria into MSC was recapitulated in a model of myocardial infarction in vivo. Specifically, MSC engrafted into infarcted hearts of mice reduced damage, upregulated HO-1 and increased mitochondrial biogenesis, while inhibition of mitophagy or HO-1 failed to protect against cardiac apoptosis. In conclusion, our study reveals a new facet about the role of mitochondria released from dying cells as a key environmental cue that controls the cytoprotective function of MSC and opens novel avenues to improve the effectiveness of MSC-based therapies.
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Affiliation(s)
- Meriem Mahrouf-Yorgov
- Université Paris-Est, UMR-S955, UPEC, Créteil, Paris, France.,INSERM, Unité 955 Team 12, Créteil, Paris, France
| | - Lionel Augeul
- INSERM UMR-1060, Laboratoire CarMeN, Université Lyon 1, Faculté de Médecine, Rockefeller, Lyon, France
| | - Claire Crola Da Silva
- INSERM UMR-1060, Laboratoire CarMeN, Université Lyon 1, Faculté de Médecine, Rockefeller, Lyon, France
| | - Maud Jourdan
- Université Paris-Est, UMR-S955, UPEC, Créteil, Paris, France.,INSERM, Unité 955 Team 12, Créteil, Paris, France
| | - Muriel Rigolet
- Université Paris-Est, UMR-S955, UPEC, Créteil, Paris, France.,INSERM U955 Team 10, Créteil, Paris, France
| | - Sylvie Manin
- Université Paris-Est, UMR-S955, UPEC, Créteil, Paris, France.,INSERM, Unité 955 Team 12, Créteil, Paris, France
| | - René Ferrera
- INSERM UMR-1060, Laboratoire CarMeN, Université Lyon 1, Faculté de Médecine, Rockefeller, Lyon, France
| | - Michel Ovize
- INSERM UMR-1060, Laboratoire CarMeN, Université Lyon 1, Faculté de Médecine, Rockefeller, Lyon, France.,Hospices Civils de Lyon, Hôpital Louis Pradel, Service d'Explorations Fonctionnelles, Cardiovasculaires and Centre d'Investigation Clinique, Lyon, France
| | - Adeline Henry
- Université Paris-Est, UMR-S955, UPEC, Créteil, Paris, France.,INSERM U955, Plateforme de Cytométrie en flux, Créteil, Paris, France
| | - Aurélie Guguin
- Université Paris-Est, UMR-S955, UPEC, Créteil, Paris, France.,INSERM U955, Plateforme de Cytométrie en flux, Créteil, Paris, France
| | - Jean-Paul Meningaud
- Service de Chirurgie Plastique et Maxillo-Faciale, AP-HP, Hôpital Henri Mondor-A. Chenevier, Créteil, Paris, France
| | - Jean-Luc Dubois-Randé
- Université Paris-Est, UMR-S955, UPEC, Créteil, Paris, France.,Fédération de Cardiologie, AP-HP, Hôpital Henri Mondor-A. Chenevier, Créteil, Paris, France
| | - Roberto Motterlini
- Université Paris-Est, UMR-S955, UPEC, Créteil, Paris, France.,INSERM, Unité 955 Team 12, Créteil, Paris, France
| | - Roberta Foresti
- Université Paris-Est, UMR-S955, UPEC, Créteil, Paris, France.,INSERM, Unité 955 Team 12, Créteil, Paris, France
| | - Anne-Marie Rodriguez
- Université Paris-Est, UMR-S955, UPEC, Créteil, Paris, France.,INSERM, Unité 955 Team 12, Créteil, Paris, France
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303
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Hay-Koren A, Bialik S, Levin-Salomon V, Kimchi A. Changes in cIAP2, survivin and BimEL expression characterize the switch from autophagy to apoptosis in prolonged starvation. J Intern Med 2017; 281:458-470. [PMID: 28425584 DOI: 10.1111/joim.12616] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Autophagy is a catabolic process involving the engulfment of cytoplasmic content within autophagosomes followed by their delivery to lysosomes. This process is a survival mechanism, enabling cells to cope with nutrient deprivation by degradation and recycling of macromolecules. Yet during continued stress such as prolonged starvation, a switch from autophagy to apoptosis is often detected. OBJECTIVE In this work, we characterized the temporal dynamics of the transition from autophagy towards apoptosis with the aim of elucidating the molecular mechanism regulating the switch from survival autophagy to apoptotic cell death. RESULTS AND CONCLUSIONS We defined an inverse relationship between apoptosis and autophagy spanning a period of 72 h, manifested by the sequential reduction in LC3 lipidation and the activation of caspase-3. The transition to apoptosis correlated with a selective decline in the mRNA and protein levels of two anti-apoptotic IAP family proteins, survivin and cIAP2 and a selective increase in the BH3-only protein, BimEL. This 'molecular signature' was common to several cell lines undergoing the switch from autophagy to apoptosis during prolonged starvation. Mechanistically, the increased BimEL protein levels resulted from its reduced binding to its specific E3 ligase, βTrCP, leading to protein stabilization. Consistent with this, BimEL showed decreased phosphorylation at critical sites previously reported to be essential for binding to the E3 ligase. The decrease in the anti-apoptotic IAPs and the increase in the pro-apoptotic BimEL may thus constitute a molecular switch from autophagy to apoptosis during prolonged starvation.
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Affiliation(s)
- A Hay-Koren
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - S Bialik
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - V Levin-Salomon
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - A Kimchi
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
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304
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Formentini L, Santacatterina F, Núñez de Arenas C, Stamatakis K, López-Martínez D, Logan A, Fresno M, Smits R, Murphy MP, Cuezva JM. Mitochondrial ROS Production Protects the Intestine from Inflammation through Functional M2 Macrophage Polarization. Cell Rep 2017; 19:1202-1213. [DOI: 10.1016/j.celrep.2017.04.036] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 03/03/2017] [Accepted: 04/12/2017] [Indexed: 01/06/2023] Open
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305
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Yang SC, Chang SH, Hsieh PW, Huang YT, Ho CM, Tsai YF, Hwang TL. Dipeptide HCH6-1 inhibits neutrophil activation and protects against acute lung injury by blocking FPR1. Free Radic Biol Med 2017; 106:254-269. [PMID: 28232203 DOI: 10.1016/j.freeradbiomed.2017.02.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 01/24/2017] [Accepted: 02/17/2017] [Indexed: 12/12/2022]
Abstract
Formyl peptide receptor 1 (FPR1) is an emerging therapeutic target for the discovery of drugs to treat neutrophilic inflammatory diseases. However, development of FPR1 antagonists for clinical use is still inadequate. The purpose of this study was to identify a synthetic dipeptide N-(N-benzoyl-L-tryptophanyl)-D-phenylanlanine methyl ester (HCH6-1) as a FPR1 inhibitor and to investigate its protective effects against acute lung injury (ALI). HCH6-1 inhibited superoxide anion generation, elastase release, and chemotaxis in human neutrophils specifically activated by formyl-L-methionyl-L-leucyl-L-phenylalanine (fMLF), an FPR1 agonist. HCH6-1 produced right shifts in the concentration-response curves of fMLF, suggesting that HCH6-1 was a competitive antagonist of FPR1. Indeed, HCH6-1 bound to FPR1 in human neutrophils and neutrophil-like THP-1 as well as hFPR1-transfected HEK293 cells. Also, the FPR1 downstream signaling pathways were competitively inhibited by HCH6-1. Furthermore, HCH6-1 prevented pulmonary neutrophil infiltration and edema along with alveolar damage in LPS-induced ALI in mice. Our findings suggest that HCH6-1, a FPR1 antagonist, may have potential as a new therapeutic agent for treating FPR1-involved inflammatory lung diseases.
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Affiliation(s)
- Shun-Chin Yang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Taipei Veterans General Hospital and National Yang-Ming University, Taipei 112, Taiwan; Division of Natural Products, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Shih-Hsin Chang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Industry of Human Ecology, Research Center for Chinese Herbal Medicine, and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
| | - Pei-Wen Hsieh
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Division of Natural Products, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Industry of Human Ecology, Research Center for Chinese Herbal Medicine, and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Yin-Ting Huang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Chiu-Ming Ho
- Department of Anesthesiology, Taipei Veterans General Hospital and National Yang-Ming University, Taipei 112, Taiwan
| | - Yung-Fong Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Division of Natural Products, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Industry of Human Ecology, Research Center for Chinese Herbal Medicine, and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.
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306
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You Y, Cheng AC, Wang MS, Jia RY, Sun KF, Yang Q, Wu Y, Zhu D, Chen S, Liu MF, Zhao XX, Chen XY. The suppression of apoptosis by α-herpesvirus. Cell Death Dis 2017; 8:e2749. [PMID: 28406478 PMCID: PMC5477576 DOI: 10.1038/cddis.2017.139] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 02/09/2017] [Accepted: 02/20/2017] [Indexed: 02/07/2023]
Abstract
Apoptosis, an important innate immune mechanism that eliminates pathogen-infected cells, is primarily triggered by two signalling pathways: the death receptor pathway and the mitochondria-mediated pathway. However, many viruses have evolved various strategies to suppress apoptosis by encoding anti-apoptotic factors or regulating apoptotic signalling pathways, which promote viral propagation and evasion of the host defence. During its life cycle, α-herpesvirus utilizes an elegant multifarious anti-apoptotic strategy to suppress programmed cell death. This progress article primarily focuses on the current understanding of the apoptosis-inhibition mechanisms of α-herpesvirus anti-apoptotic genes and their expression products and discusses future directions, including how the anti-apoptotic function of herpesvirus could be targeted therapeutically.
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Affiliation(s)
- Yu You
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - An-Chun Cheng
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Ming-Shu Wang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Ren-Yong Jia
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Kun-Feng Sun
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Qiao Yang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Ying Wu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Dekang Zhu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Shun Chen
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Ma-Feng Liu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Xin-Xin Zhao
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Xiao-Yue Chen
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
- Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
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307
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Lee SY, Kang MG, Shin S, Kwak C, Kwon T, Seo JK, Kim JS, Rhee HW. Architecture Mapping of the Inner Mitochondrial Membrane Proteome by Chemical Tools in Live Cells. J Am Chem Soc 2017; 139:3651-3662. [DOI: 10.1021/jacs.6b10418] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | - Sanghee Shin
- Center
for RNA Research, Institute of Basic Science (IBS), Seoul 08826, Korea
- School
of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | | | | | | | - Jong-Seo Kim
- Center
for RNA Research, Institute of Basic Science (IBS), Seoul 08826, Korea
- School
of Biological Sciences, Seoul National University, Seoul 08826, Korea
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308
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Simon DW, McGeachy M, Bayır H, Clark RS, Loane DJ, Kochanek PM. The far-reaching scope of neuroinflammation after traumatic brain injury. Nat Rev Neurol 2017; 13:171-191. [PMID: 28186177 PMCID: PMC5675525 DOI: 10.1038/nrneurol.2017.13] [Citation(s) in RCA: 581] [Impact Index Per Article: 83.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The 'silent epidemic' of traumatic brain injury (TBI) has been placed in the spotlight as a result of clinical investigations and popular press coverage of athletes and veterans with single or repetitive head injuries. Neuroinflammation can cause acute secondary injury after TBI, and has been linked to chronic neurodegenerative diseases; however, anti-inflammatory agents have failed to improve TBI outcomes in clinical trials. In this Review, we therefore propose a new framework of targeted immunomodulation after TBI for future exploration. Our framework incorporates factors such as the time from injury, mechanism of injury, and secondary insults in considering potential treatment options. Structuring our discussion around the dynamics of the immune response to TBI - from initial triggers to chronic neuroinflammation - we consider the ability of soluble and cellular inflammatory mediators to promote repair and regeneration versus secondary injury and neurodegeneration. We summarize both animal model and human studies, with clinical data explicitly defined throughout this Review. Recent advances in neuroimmunology and TBI-responsive neuroinflammation are incorporated, including concepts of inflammasomes, mechanisms of microglial polarization, and glymphatic clearance. Moreover, we highlight findings that could offer novel therapeutic targets for translational and clinical research, assimilate evidence from other brain injury models, and identify outstanding questions in the field.
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Affiliation(s)
- Dennis W. Simon
- Department of Critical Care Medicine, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- Department of Pediatrics, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Mandy McGeachy
- Department of Medicine, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Hülya Bayır
- Department of Critical Care Medicine, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- Department of Environmental and Occupational Health, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Robert S.B. Clark
- Department of Critical Care Medicine, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- Department of Pediatrics, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- Department of Anesthesiology, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- Clinical and Translational Science Institute, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - David J. Loane
- Department of Anesthesiology and Shock, Trauma and Anesthesiology Research (STAR) Center, University of Maryland School of Medicine, Baltimore, MA 21201, USA
| | - Patrick M. Kochanek
- Department of Critical Care Medicine, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- Department of Pediatrics, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- Department of Anesthesiology, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- Department of Neurological Surgery, University of Pittsburgh School of Medicine; The Children’s Hospital of Pittsburgh of UPMC, and the Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
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309
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Pando-Robles V, Batista CV. Aedes-Borne Virus-Mosquito Interactions: Mass Spectrometry Strategies and Findings. Vector Borne Zoonotic Dis 2017; 17:361-375. [PMID: 28192064 DOI: 10.1089/vbz.2016.2040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Aedes-borne viruses are responsible for high-impact neglected tropical diseases and unpredictable outbreaks such as the ongoing Zika epidemics. Aedes mosquitoes spread different arboviruses such as Dengue virus (DENV), Chikungunya virus (CHIKV), and Zika virus, among others, and are responsible for the continuous emergence and reemergence of these pathogens. These viruses have complex transmission cycles that include two hosts, namely the Aedes mosquito as a vector and susceptible vertebrate hosts. Human infection with arboviruses causes diseases that range from subclinical or mild to febrile diseases, encephalitis, and hemorrhagic fever. Infected mosquitoes do not show detectable signs of disease, even though the virus maintains a lifelong persistent infection. The infection of the Aedes mosquito by viruses involves a molecular crosstalk between cell and viral proteins. An understanding of how mosquito vectors and viruses interact is of fundamental interest, and it also offers novel perspectives for disease control. In recent years, mass spectrometry (MS)-based strategies in combination with bioinformatics have been successfully applied to identify and quantify global changes in cellular proteins, lipids, peptides, and metabolites in response to viral infection. Although the information about proteomics in the Aedes mosquito is limited, the information that has been reported can set up the basis for future studies. This review reflects how MS-based approaches have extended our understanding of Aedes mosquito biology and the development of DENV and CHIKV infection in the vector. Finally, this review discusses future challenges in the field.
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Affiliation(s)
- Victoria Pando-Robles
- 1 Laboratorio de Proteómica, Departamento de Infección e Inmunidad, Centro de Investigación sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, México
| | - Cesar V Batista
- 2 Laboratorio Universitario de Proteómica, Instituto de Biotecnología. Universidad Nacional Autónoma de México , Cuernavaca, México
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310
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Bustos PL, Volta BJ, Perrone AE, Milduberger N, Bua J. A homolog of cyclophilin D is expressed in Trypanosoma cruzi and is involved in the oxidative stress-damage response. Cell Death Discov 2017; 3:16092. [PMID: 28179991 PMCID: PMC5292771 DOI: 10.1038/cddiscovery.2016.92] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/11/2016] [Accepted: 10/24/2016] [Indexed: 12/23/2022] Open
Abstract
Mitochondria have an important role in energy production, homeostasis and cell death. The opening of the mitochondrial permeability transition pore (mPTP) is considered one of the key events in apoptosis and necrosis, modulated by cyclophilin D (CyPD), a crucial component of this protein complex. In Trypanosoma cruzi, the protozoan parasite that causes Chagas disease, we have previously described that mitochondrial permeability transition occurs after oxidative stress induction in a cyclosporin A-dependent manner, a well-known cyclophilin inhibitor. In the present work, a mitochondrial parasite cyclophilin, named TcCyP22, which is homolog to the mammalian CyPD was identified. TcCyP22-overexpressing parasites showed an enhanced loss of mitochondrial membrane potential and loss of cell viability when exposed to a hydrogen peroxide stimulus compared with control parasites. Our results describe for the first time in a protozoan parasite that a mitochondrial cyclophilin is a component of the permeability transition pore and is involved in regulated cell death induced by oxidative stress.
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Affiliation(s)
- Patricia L Bustos
- Instituto Nacional de Parasitología 'Dr. Mario Fatala Chabén'- A.N.L.I.S. Malbrán, Av. Paseo Colón 568, C1063AC S, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina
| | - Bibiana J Volta
- Instituto Nacional de Parasitología 'Dr. Mario Fatala Chabén'- A.N.L.I.S. Malbrán , Av. Paseo Colón 568, C1063AC S, Buenos Aires, Argentina
| | - Alina E Perrone
- Instituto Nacional de Parasitología 'Dr. Mario Fatala Chabén'- A.N.L.I.S. Malbrán , Av. Paseo Colón 568, C1063AC S, Buenos Aires, Argentina
| | - Natalia Milduberger
- Instituto Nacional de Parasitología 'Dr. Mario Fatala Chabén'- A.N.L.I.S. Malbrán, Av. Paseo Colón 568, C1063AC S, Buenos Aires, Argentina; CAECIHS, Universidad Abierta Interamericana, Av. Montes de Oca 745, 2º piso, C1270AAH, Buenos Aires, Argentina
| | - Jacqueline Bua
- Instituto Nacional de Parasitología 'Dr. Mario Fatala Chabén'- A.N.L.I.S. Malbrán, Av. Paseo Colón 568, C1063AC S, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina; CAECIHS, Universidad Abierta Interamericana, Av. Montes de Oca 745, 2º piso, C1270AAH, Buenos Aires, Argentina
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311
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Colon cancer cell treatment with rose bengal generates a protective immune response via immunogenic cell death. Cell Death Dis 2017; 8:e2584. [PMID: 28151483 PMCID: PMC5386459 DOI: 10.1038/cddis.2016.473] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/13/2016] [Accepted: 12/14/2016] [Indexed: 12/15/2022]
Abstract
Immunotherapeutic approaches to manage patients with advanced gastrointestinal malignancies are desired; however, mechanisms to incite tumor-specific immune responses remain to be elucidated. Rose bengal (RB) is toxic at low concentrations to malignant cells and may induce damage-associated molecular patterns; therefore, we investigated its potential as an immunomodulator in colon cancer. Murine and human colon cancer lines were treated with RB (10% in saline/PV-10) for cell cycle, cell death, and apoptosis assays. Damage-associated molecular patterns were assessed with western blot, ELISA, and flow cytometry. In an immunocompetent murine model of colon cancer, we demonstrate that tumors regress upon RB treatment, and that RB induces cell death in colon cancer cells through G2/M growth arrest and predominantly necrosis. RB-treated colon cancer cells expressed distinct hallmarks of immunogenic cell death (ICD), including enhanced expression of calreticulin and heat-shock protein 90 on the cell surface, a decrease in intracellular ATP, and the release of HMGB1. To confirm the ICD phenotype, we vaccinated immunocompetent animals with syngeneic colon cancer cells treated with RB. RB-treated tumors served as a vaccine against subsequent challenge with the same CT26 colon cancer tumor cells, and vaccination with in vitro RB-treated cells resulted in slower tumor growth following inoculation with colon cancer cells, but not with syngeneic non-CT26 cancer cells, suggesting a specific antitumor immune response. In conclusion, RB serves as an inducer of ICD that contributes to enhanced specific antitumor immunity in colorectal cancer.
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312
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The Journey of the Autophagosome through Mammalian Cell Organelles and Membranes. J Mol Biol 2017; 429:497-514. [DOI: 10.1016/j.jmb.2016.12.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 12/08/2016] [Accepted: 12/10/2016] [Indexed: 12/30/2022]
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313
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Wang Y, He H, Wang S, Liu Y, Hu M, Cao Y, Kong S, Wei X, Wang C. Photostimulation by femtosecond laser triggers restorable fragmentation in single mitochondrion. JOURNAL OF BIOPHOTONICS 2017; 10:286-293. [PMID: 26847091 DOI: 10.1002/jbio.201500281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 01/14/2016] [Accepted: 01/15/2016] [Indexed: 05/08/2023]
Abstract
Mitochondrial research is important to the study of ageing, apoptosis, and metabolic diseases. Over the years, mitochondria have been studied with stimulation by chemical agents in a global manner for basic and applied research. This approach lacks of precision and accuracy in terms of spatial and temporal resolution. Here we demonstrate a direct and well-defined photostimulation targeting on single mitochondrial tubular structure using a tightly-focused femtosecond (fs) laser that could precisely activate mitochondria at single tubule level to show restorable fragmentation and subsequent recovery after tens of seconds. In these two processes, a series of mitochondrial reactive oxygen species (mROS) flashes was observed and found critical to the mitochondrial fragmentation. Meanwhile, transient openings of mitochondrial permeability transition pores (mPTP) were seen with oscillations of mitochondrial membrane potential. These activities were crucial for the recovery through scavenging the mROS. Without the feedback mechanisms, the fragmented mitochondria could not return back to their original tubular structure. These interesting observations show that photostimulation by fs laser is an active, precise, clean and well-defined approach to dissect the role of mitochondria in normal physiology and different kinds of diseases.
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Affiliation(s)
- Yintao Wang
- Ultrafast Laser Laboratory, Key Laboratory of Optoelectronic Information Technology (Ministry of Education), College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, 300072, P.R. China
| | - Hao He
- Ultrafast Laser Laboratory, Key Laboratory of Optoelectronic Information Technology (Ministry of Education), College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, 300072, P.R. China
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Shaoyang Wang
- Ultrafast Laser Laboratory, Key Laboratory of Optoelectronic Information Technology (Ministry of Education), College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, 300072, P.R. China
| | - Yaohui Liu
- Key Laboratory of microbial functional genomics of Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300072, P.R. China
| | - Minglie Hu
- Ultrafast Laser Laboratory, Key Laboratory of Optoelectronic Information Technology (Ministry of Education), College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, 300072, P.R. China
| | - Youjia Cao
- Key Laboratory of microbial functional genomics of Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300072, P.R. China
| | - Siukai Kong
- School of Life Sciences, the Chinese University of Hong Kong, Hong Kong
| | - Xunbin Wei
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Chingyue Wang
- Ultrafast Laser Laboratory, Key Laboratory of Optoelectronic Information Technology (Ministry of Education), College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, 300072, P.R. China
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314
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Xing Y, Liqi Z, Jian L, Qinghua Y, Qian Y. Doxycycline Induces Mitophagy and Suppresses Production of Interferon-β in IPEC-J2 Cells. Front Cell Infect Microbiol 2017; 7:21. [PMID: 28203548 PMCID: PMC5285722 DOI: 10.3389/fcimb.2017.00021] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 01/16/2017] [Indexed: 01/03/2023] Open
Abstract
Previous reports have demonstrated that the second-generation tetracycline derivative doxycycline (DOX) interrupts mitochondrial proteostasis and physiology, inhibits proliferation of many cell types, and induces apoptosis. However, the effects of DOX, which is widely used in porcine husbandry by feed, on the porcine intestinal epithelium are unclear. In this study, we demonstrated that DOX damaged mitochondrial morphology and induced the co-localization of mitochondria with autophagosomes, suggesting that DOX induces mitophagy in IPEC-J2 cells. We also found evidence that DOX increased intracellular levels of reactive oxygen species (ROS) or mitochondrial-specific ROS in a dose dependent manner. Moreover, 50 μg/ml DOX significantly decreased production of interferon-β and facilitated replication of transmissible gastroenteritis coronavirus in IPEC-J2 cells. These results demonstrated that DOX induced mitophagy and ROS production, which damaged the intestinal epithelium. As DOX is used extensively in pig husbandry, uncontrolled application poses a significant threat of viral infection, so stricter policies on its usage should be required.
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Affiliation(s)
- Yang Xing
- Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University Nanjing, China
| | - Zhu Liqi
- Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University Nanjing, China
| | - Lin Jian
- Department of Zoology, College of Life Sciences, Nanjing Agricultural University Nanjing, China
| | - Yu Qinghua
- Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University Nanjing, China
| | - Yang Qian
- Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University Nanjing, China
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315
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Tang HM, Talbot CC, Fung MC, Tang HL. Molecular signature of anastasis for reversal of apoptosis. F1000Res 2017; 6:43. [PMID: 28299189 DOI: 10.12688/f1000research.10568.1] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/10/2017] [Indexed: 12/22/2022] Open
Abstract
Anastasis (Greek for "rising to life") is a cell recovery phenomenon that rescues dying cells from the brink of cell death. We recently discovered anastasis to occur after the execution-stage of apoptosis in vitro and in vivo. Promoting anastasis could in principle preserve injured cells that are difficult to replace, such as cardiomyocytes and neurons. Conversely, arresting anastasis in dying cancer cells after cancer therapies could improve treatment efficacy. To develop new therapies that promote or inhibit anastasis, it is essential to identify the key regulators and mediators of anastasis - the therapeutic targets. Therefore, we performed time-course microarray analysis to explore the molecular mechanisms of anastasis during reversal of ethanol-induced apoptosis in mouse primary liver cells. We found striking changes in transcription of genes involved in multiple pathways, including early activation of pro-cell survival, anti-oxidation, cell cycle arrest, histone modification, DNA-damage and stress-inducible responses, and at delayed times, angiogenesis and cell migration. Validation with RT-PCR confirmed similar changes in the human liver cancer cell line, HepG2, during anastasis. Here, we present the time-course whole-genome gene expression dataset revealing gene expression profiles during the reversal of apoptosis. This dataset provides important insights into the physiological, pathological, and therapeutic implications of anastasis.
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Affiliation(s)
- Ho Man Tang
- Institute for Basic Biomedical Sciences, Johns Hopkins University School of Medicine, Baltimore, USA
| | - C Conover Talbot
- Institute for Basic Biomedical Sciences, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Ming Chiu Fung
- School of Life Sciences, Chinese University of Hong Kong, Shatin, Hong Kong
| | - Ho Lam Tang
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, USA
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316
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Abstract
Anastasis (Greek for "rising to life") is a cell recovery phenomenon that rescues dying cells from the brink of cell death. We recently discovered anastasis to occur after the execution-stage of apoptosis
in vitro and
in vivo. Promoting anastasis could in principle preserve injured cells that are difficult to replace, such as cardiomyocytes and neurons. Conversely, arresting anastasis in dying cancer cells after cancer therapies could improve treatment efficacy. To develop new therapies that promote or inhibit anastasis, it is essential to identify the key regulators and mediators of anastasis – the therapeutic targets. Therefore, we performed time-course microarray analysis to explore the molecular mechanisms of anastasis during reversal of ethanol-induced apoptosis in mouse primary liver cells. We found striking changes in transcription of genes involved in multiple pathways, including early activation of pro-cell survival, anti-oxidation, cell cycle arrest, histone modification, DNA-damage and stress-inducible responses, and at delayed times, angiogenesis and cell migration. Validation with RT-PCR confirmed similar changes in the human liver cancer cell line, HepG2, during anastasis. Here, we present the time-course whole-genome gene expression dataset revealing gene expression profiles during the reversal of apoptosis. This dataset provides important insights into the physiological, pathological, and therapeutic implications of anastasis.
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Affiliation(s)
- Ho Man Tang
- Institute for Basic Biomedical Sciences, Johns Hopkins University School of Medicine, Baltimore, USA
| | - C Conover Talbot
- Institute for Basic Biomedical Sciences, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Ming Chiu Fung
- School of Life Sciences, Chinese University of Hong Kong, Shatin, Hong Kong
| | - Ho Lam Tang
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, USA
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317
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Tan J, Song M, Zhou M, Hu Y. Antibiotic tigecycline enhances cisplatin activity against human hepatocellular carcinoma through inducing mitochondrial dysfunction and oxidative damage. Biochem Biophys Res Commun 2017; 483:17-23. [PMID: 28069382 DOI: 10.1016/j.bbrc.2017.01.021] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 01/05/2017] [Indexed: 01/08/2023]
Abstract
Targeting mitochondrial metabolism has been recently demonstrated to be a promising therapeutic strategy for the treatment of various cancer. In this work, we demonstrate that antibiotic tigecycline is selectively against hepatocellular carcinoma (HCC) through inducing mitochondrial dysfunction and oxidative damage. Tigecycline is more effective in inhibiting proliferation and inducing apoptosis of HCC than normal liver cells. Importantly, tigecycline significantly enhances the inhibitory effects of chemotherapeutic drug cisplatin in HCC in vitro and in vivo. Mechanistically, tigecycline specifically inhibits mitochondrial translation as shown by the decreased protein levels of Cox-1 and -2 but not Cox-4 or Grp78, and increased mRNA levels of Cox-1 and -2 but not Cox-4 in HCC cells exposed to tigecycline. In addition, tigecycline significantly induces mitochondrial dysfunction in HCC cells via decreasing mitochondrial membrane potential, complex I and IV activities, mitochondrial respiration and ATP levels. Tigecycline also increases levels of mitochondrial superoxide, hydrogen peroxide and ROS levels. Consistent with oxidative stress, oxidative damage on DNA, protein and lipid are also observed in tigecycline-treated cells. Importantly, antioxidant N-acetyl-l-cysteine (NAC) reverses the effects of tigecycline, suggesting that oxidative stress is required for the action of tigecycline in HCC cells. We further show that HCC cells have higher level of mitochondrial biogenesis than normal liver cells which might explain the different sensitivity to tigecycline between HCC and normal liver cells. Our work is the first to demonstrate that tigecycline is a promising candidate for HCC treatment and highlight the therapeutic value of targeting mitochondrial metabolism in HCC.
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Affiliation(s)
- Jun Tan
- Department of Hepatology, Ningbo No. 2 Hospital, Ningbo, 315010, China
| | - Meijun Song
- Department of Respiratory Medicine, Ningbo Medical Treatment Center Li Huili Hospital, Ningbo, 315041, China
| | - Mi Zhou
- School of Medicine, Ningbo University, Ningbo, 315211, China.
| | - Yaoren Hu
- Department of Hepatology, Ningbo No. 2 Hospital, Ningbo, 315010, China.
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318
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Abstract
The sphingolipid family of lipids modulate several cellular processes, including proliferation, cell cycle regulation, inflammatory signaling pathways, and cell death. Several members of the sphingolipid pathway have opposing functions and thus imbalances in sphingolipid metabolism result in deregulated cellular processes, which cause or contribute to diseases and disorders in humans. A key cellular process regulated by sphingolipids is apoptosis, or programmed cell death. Sphingolipids play an important role in both extrinsic and intrinsic apoptotic pathways depending on the stimuli, cell type and cellular response to the stress. During mitochondrial-mediated apoptosis, multiple pathways converge on mitochondria and induce mitochondrial outer membrane permeabilization (MOMP). MOMP results in the release of intermembrane space proteins such as cytochrome c and Apaf1 into the cytosol where they activate the caspases and DNases that execute cell death. The precise molecular components of the pore(s) responsible for MOMP are unknown, but sphingolipids are thought to play a role. Here, we review evidence for a role of sphingolipids in the induction of mitochondrial-mediated apoptosis with a focus on potential underlying molecular mechanisms by which altered sphingolipid metabolism indirectly or directly induce MOMP. Data available on these mechanisms is reviewed, and the focus and limitations of previous and current studies are discussed to present important unanswered questions and potential future directions.
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Affiliation(s)
- Gauri A Patwardhan
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA
| | - Levi J Beverly
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA.,Department of Medicine, University of Louisville, Louisville, KY, 40202, USA.,James Graham Brown Cancer Center, University of Louisville, 505 South Hancock Street, Clinical and Translational Research Building, Room 203, Louisville, KY, 40202, USA
| | - Leah J Siskind
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA. .,James Graham Brown Cancer Center, University of Louisville, 505 South Hancock Street, Clinical and Translational Research Building, Room 203, Louisville, KY, 40202, USA.
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319
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Multi-parametric imaging of cell heterogeneity in apoptosis analysis. Methods 2017; 112:105-123. [DOI: 10.1016/j.ymeth.2016.07.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 06/14/2016] [Accepted: 07/05/2016] [Indexed: 12/13/2022] Open
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320
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Miller MA, Zachary JF. Mechanisms and Morphology of Cellular Injury, Adaptation, and Death 1. PATHOLOGIC BASIS OF VETERINARY DISEASE 2017. [PMCID: PMC7171462 DOI: 10.1016/b978-0-323-35775-3.00001-1] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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321
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Song X, Li N, Wang C, Xiao Y. Targetable and fixable rotor for quantifying mitochondrial viscosity of living cells by fluorescence lifetime imaging. J Mater Chem B 2017; 5:360-368. [DOI: 10.1039/c6tb02524b] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fixable probe, named Vis-A, to quantify mitochondrial viscosity of living cells by fluorescence lifetime imaging.
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Affiliation(s)
- Xinbo Song
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- China
| | - Ning Li
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- China
| | - Chao Wang
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- China
| | - Yi Xiao
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- China
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322
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Park DW, Zmijewski JW. Mitochondrial Dysfunction and Immune Cell Metabolism in Sepsis. Infect Chemother 2017; 49:10-21. [PMID: 28378540 PMCID: PMC5382045 DOI: 10.3947/ic.2017.49.1.10] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Indexed: 12/23/2022] Open
Abstract
Sepsis is a life threatening condition mediated by systemic infection, but also triggered by hemorrhage and trauma. These are significant causes of organ injury implicated in morbidity and mortality, as well as post-sepsis complications associated with dysfunction of innate and adaptive immunity. The role of cellular bioenergetics and loss of metabolic plasticity of immune cells is increasingly emerging in the pathogenesis of sepsis. This review describes mitochondrial biology and metabolic alterations of immune cells due to sepsis, as well as indicates plausible therapeutic opportunities.
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Affiliation(s)
- Dae Won Park
- Division of Infectious Diseases, Korea University Ansan Hospital, Ansan, Korea
| | - Jaroslaw W Zmijewski
- Division of Pulmonary, Allergy & Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
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323
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Almeida AS, Vieira HLA. Role of Cell Metabolism and Mitochondrial Function During Adult Neurogenesis. Neurochem Res 2016; 42:1787-1794. [DOI: 10.1007/s11064-016-2150-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 12/09/2016] [Accepted: 12/10/2016] [Indexed: 12/15/2022]
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324
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Galluzzi L, Kepp O, Chan FKM, Kroemer G. Necroptosis: Mechanisms and Relevance to Disease. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2016; 12:103-130. [PMID: 27959630 DOI: 10.1146/annurev-pathol-052016-100247] [Citation(s) in RCA: 440] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Necroptosis is a form of regulated cell death that critically depends on receptor-interacting serine-threonine kinase 3 (RIPK3) and mixed lineage kinase domain-like (MLKL) and generally manifests with morphological features of necrosis. The molecular mechanisms that underlie distinct instances of necroptosis have just begun to emerge. Nonetheless, it has already been shown that necroptosis contributes to cellular demise in various pathophysiological conditions, including viral infection, acute kidney injury, and cardiac ischemia/reperfusion. Moreover, human tumors appear to obtain an advantage from the downregulation of key components of the molecular machinery for necroptosis. Although such an advantage may stem from an increased resistance to adverse microenvironmental conditions, accumulating evidence indicates that necroptosis-deficient cancer cells are poorly immunogenic and hence escape natural and therapy-elicited immunosurveillance. Here, we discuss the molecular mechanisms and relevance to disease of necroptosis.
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Affiliation(s)
- Lorenzo Galluzzi
- Department of Radiation Oncology, Weill Cornell Medical College, New York, NY 10065; .,Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; .,INSERM, U1138, 75006 Paris, France.,Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France.,Université Pierre et Marie Curie/Paris VI, 75006 Paris, France.,Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France
| | - Oliver Kepp
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; .,INSERM, U1138, 75006 Paris, France.,Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France.,Université Pierre et Marie Curie/Paris VI, 75006 Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France;
| | | | - Guido Kroemer
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; .,INSERM, U1138, 75006 Paris, France.,Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France.,Université Pierre et Marie Curie/Paris VI, 75006 Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France; .,Department of Women's and Children's Health, Karolinska Institute, Karolinska University Hospital, 17176 Stockholm, Sweden.,Pôle de Biologie, Hôpital Européen George Pompidou, AP-HP, 75015 Paris, France
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325
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Land WG, Agostinis P, Gasser S, Garg AD, Linkermann A. Transplantation and Damage-Associated Molecular Patterns (DAMPs). Am J Transplant 2016; 16:3338-3361. [PMID: 27421829 DOI: 10.1111/ajt.13963] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 06/24/2016] [Accepted: 07/10/2016] [Indexed: 01/25/2023]
Abstract
Upon solid organ transplantation and during cancer immunotherapy, cellular stress responses result in the release of damage-associated molecular patterns (DAMPs). The various cellular stresses have been characterized in detail over the last decades, but a unifying classification based on clinically important aspects is lacking. Here, we provide an in-depth review of the most recent literature along with a unifying concept of the danger/injury model, suggest a classification of DAMPs, and review the recently elaborated mechanisms that result in the emission of such factors. We further point out the differences in DAMP responses including the release following a heat shock pattern, endoplasmic reticulum stress, DNA damage-mediated DAMP release, and discuss the diverse pathways of regulated necrosis in this respect. The understanding of various forms of DAMPs and the consequences of their different release patterns are prerequisite to associate serum markers of cellular stresses with clinical outcomes.
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Affiliation(s)
- W G Land
- German Academy of Transplantation Medicine, Munich, Germany.,Laboratoire d'ImmunoRhumatologie Moléculaire, INSERM UMR_S1109, Plateforme GENOMAX, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France.,LabexTRANSPLANTEX, Faculté de Médecine, Université de Strasbourg, Strasbourg, France
| | - P Agostinis
- Cell Death Research and Therapy (CDRT) Lab, Department of Cellular and Molecular Medicine, KU Leuven, University of Leuven, Leuven, Belgium
| | - S Gasser
- Immunology Programme and Department of Microbiology and Immunology, Centre for Life Sciences, National University of Singapore, Singapore, Singapore
| | - A D Garg
- Cell Death Research and Therapy (CDRT) Lab, Department of Cellular and Molecular Medicine, KU Leuven, University of Leuven, Leuven, Belgium
| | - A Linkermann
- Cluster of Excellence EXC306, Inflammation at Interfaces, Schleswig-Holstein, Germany.,Clinic for Nephrology and Hypertension, Christian-Albrechts-University, Kiel, Germany
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326
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Grace PM, Gaudet AD, Staikopoulos V, Maier SF, Hutchinson MR, Salvemini D, Watkins LR. Nitroxidative Signaling Mechanisms in Pathological Pain. Trends Neurosci 2016; 39:862-879. [PMID: 27842920 PMCID: PMC5148691 DOI: 10.1016/j.tins.2016.10.003] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 10/18/2016] [Accepted: 10/20/2016] [Indexed: 12/14/2022]
Abstract
Tissue injury can initiate bidirectional signaling between neurons, glia, and immune cells that creates and amplifies pain. While the ability for neurotransmitters, neuropeptides, and cytokines to initiate and maintain pain has been extensively studied, recent work has identified a key role for reactive oxygen and nitrogen species (ROS/RNS; nitroxidative species), including superoxide, peroxynitrite, and hydrogen peroxide. In this review we describe how nitroxidative species are generated after tissue injury and the mechanisms by which they enhance neuroexcitability in pain pathways. Finally, we discuss potential therapeutic strategies for normalizing nitroxidative signaling, which may also enhance opioid analgesia, to help to alleviate the enormous burden of pathological pain.
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Affiliation(s)
- Peter M Grace
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO, USA; Current address: Department of Critical Care Research, University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Andrew D Gaudet
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO, USA
| | - Vasiliki Staikopoulos
- Discipline of Physiology, School of Medicine, and the Australian Research Council (ARC) Centre for Nanoscale BioPhotonics (CNBP), University of Adelaide, Adelaide, SA, Australia
| | - Steven F Maier
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO, USA
| | - Mark R Hutchinson
- Discipline of Physiology, School of Medicine, and the Australian Research Council (ARC) Centre for Nanoscale BioPhotonics (CNBP), University of Adelaide, Adelaide, SA, Australia
| | - Daniela Salvemini
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Linda R Watkins
- Department of Psychology and Neuroscience, and the Center for Neuroscience, University of Colorado, Boulder, CO, USA
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327
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Hung KM, Chen PC, Hsieh HC, Calkins MJ. Mitochondrial defects arise from nucleoside/nucleotide reverse transcriptase inhibitors in neurons: Potential contribution to HIV-associated neurocognitive disorders. Biochim Biophys Acta Mol Basis Dis 2016; 1863:406-413. [PMID: 27840304 DOI: 10.1016/j.bbadis.2016.11.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 11/04/2016] [Accepted: 11/10/2016] [Indexed: 02/07/2023]
Abstract
The cornerstone of current HIV treatment is a class of drugs called nucleoside/nucleotide reverse transcriptase inhibitors (NRTIs). However, patients who receive long term treatment with NRTIs often develop severe side effects, which are related to mitochondrial toxicity. The potential contribution of NRTI-mediated toxicity to HIV-associated neurocognitive disorders (HAND) has not been fully explored. NRTI toxicity is thought to be mediated through mitochondrial DNA polymerase γ (pol γ) inhibition, which impairs mitochondrial DNA (mtDNA) synthesis and leads to various mitochondrial dysfunctions. To evaluate the relationship between NRTI-mediated pol γ inhibition and mitochondrial toxicity in neurons, we systematically investigated mitochondrial regulation in NRTI-treated primary cortical neurons by measuring parameters related to mtDNA content, retrograde signaling responses and mitochondrial homeostasis. The effects of four different NRTIs with variable pol γ inhibitory activity and mitochondrial toxicity were assessed. The strong pol γ inhibitor, ddI, abolished mtDNA synthesis and greatly reduced mtDNA content. However, mtDNA transcription was not as severely affected, and no defects in oxidative phosphorylation were observed. Detrimental effects on mitochondrial respiration and motility were observed after AZT treatment in the absence of mtDNA depletion or inhibition of mtDNA synthesis. The results suggest that individual NRTIs, such as ddI and AZT, have the potential to cause mitochondrial toxicity in neurons. This mitochondrial toxicity would be expected to contribute to neurotoxicity in the central nervous system, and therefore, HAND etiology may be affected by NRTI treatment.
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Affiliation(s)
- Kui-Ming Hung
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan; Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Pei-Chun Chen
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Han-Chieh Hsieh
- Department of Neurology, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Marcus J Calkins
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan.
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328
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Gordeev SA, Bykova TV, Zubova SG, Bystrova OA, Martynova MG, Pospelov VA, Pospelova TV. mTOR kinase inhibitor pp242 causes mitophagy terminated by apoptotic cell death in E1A-Ras transformed cells. Oncotarget 2016; 6:44905-26. [PMID: 26636543 PMCID: PMC4792600 DOI: 10.18632/oncotarget.6457] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 11/28/2015] [Indexed: 01/07/2023] Open
Abstract
mTOR is a critical target for controlling cell cycle progression, senescence and cell death in mammalian cancer cells. Here we studied the role of mTOR-dependent autophagy in implementating the antiprolifrative effect of mTORC1-specific inhibitor rapamycin and ATP-competitive mTOR kinase inhibitor pp242. We carried out a comprehensive analysis of pp242- and rapamycin-induced autophagy in ERas tumor cells. Rapamycin exerts cytostatic effect on ERas tumor cells, thus causing a temporary and reversible cell cycle arrest, activation of non-selective autophagy not accompanied by cell death. The rapamycin-treated cells are able to continue proliferation after drug removal. The ATP-competitive mTORC1/mTORC2 kinase inhibitor pp242 is highly cytotoxic by suppressing the function of mTORC1-4EBP1 axis and mTORC1-dependent phosphorylation of mTORC1 target--ULK1-Ser757 (Atg1). In contrast to rapamycin, pp242 activates the selective autophagy targeting mitochondria (mitophagy). The pp242-induced mitophagy is accompanied by accumulation of LC3 and conversion of LC3-I form to LC3-II. However reduced degradation of p62/SQSTM indicates abnormal flux of autophagic process. According to transmission electron microscopy data, short-term pp242-treated ERas cells exhibit numerous heavily damaged mitochondria, which are included in single membrane-bound autophagic/autolysophagic vacuoles (mitophagy). Despite the lack of typical for apoptosis features, ERas-treated cells with induced mitophagy revealed the activation of caspase 3, 9 and nucleosomal DNA fragmentation. Thus, pp242 activates autophagy with suppressed later stages, leading to impaired recycling and accumulation of dysfunctional mitochondria and cell death. Better understanding of how autophagy determines the fate of a cell--survival or cell death, can help to development of new strategy for cancer therapy.
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Affiliation(s)
- Serguei A Gordeev
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia.,Saint Petersburg State University, St. Petersburg, Russia
| | - Tatiana V Bykova
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia.,Saint Petersburg State University, St. Petersburg, Russia
| | - Svetlana G Zubova
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | - Olga A Bystrova
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | - Marina G Martynova
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | - Valery A Pospelov
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
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329
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Abstract
Immunogenicity depends on two key factors: antigenicity and adjuvanticity. The presence of exogenous or mutated antigens explains why infected cells and malignant cells can initiate an adaptive immune response provided that the cells also emit adjuvant signals as a consequence of cellular stress and death. Several infectious pathogens have devised strategies to control cell death and limit the emission of danger signals from dying cells, thereby avoiding immune recognition. Similarly, cancer cells often escape immunosurveillance owing to defects in the molecular machinery that underlies the release of endogenous adjuvants. Here, we review current knowledge on the mechanisms that underlie the activation of immune responses against dying cells and their pathophysiological relevance.
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330
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Kang MJ, Shadel GS. A Mitochondrial Perspective of Chronic Obstructive Pulmonary Disease Pathogenesis. Tuberc Respir Dis (Seoul) 2016; 79:207-213. [PMID: 27790272 PMCID: PMC5077724 DOI: 10.4046/trd.2016.79.4.207] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 04/15/2016] [Accepted: 05/26/2016] [Indexed: 12/14/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) encompasses several clinical syndromes, most notably emphysema and chronic bronchitis. Most of the current treatments fail to attenuate severity and progression of the disease, thereby requiring better mechanistic understandings of pathogenesis to develop disease-modifying therapeutics. A number of theories on COPD pathogenesis have been promulgated wherein an increase in protease burden from chronic inflammation, exaggerated production of reactive oxygen species and the resulting oxidant injury, or superfluous cell death responses caused by enhanced cellular injury/damage were proposed as the culprit. These hypotheses are not mutually exclusive and together likely represent the multifaceted biological processes involved in COPD pathogenesis. Recent studies demonstrate that mitochondria are involved in innate immune signaling that plays important roles in cigarette smoke-induced inflammasome activation, pulmonary inflammation and tissue remodeling responses. These responses are reviewed herein and synthesized into a view of COPD pathogenesis whereby mitochondria play a central role.
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Affiliation(s)
- Min-Jong Kang
- Section of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Gerald S Shadel
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA.; Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
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331
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Koopman M, Michels H, Dancy BM, Kamble R, Mouchiroud L, Auwerx J, Nollen EA, Houtkooper RH. A screening-based platform for the assessment of cellular respiration in Caenorhabditis elegans. Nat Protoc 2016; 11:1798-816. [PMID: 27583642 PMCID: PMC5040492 DOI: 10.1038/nprot.2016.106] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mitochondrial dysfunction is at the core of many diseases ranging from inherited metabolic diseases to common conditions that are associated with aging. Although associations between aging and mitochondrial function have been identified using mammalian models, much of the mechanistic insight has emerged from Caenorhabditis elegans. Mitochondrial respiration is recognized as an indicator of mitochondrial health. The Seahorse XF96 respirometer represents the state-of-the-art platform for assessing respiration in cells, and we adapted the technique for applications involving C. elegans. Here we provide a detailed protocol to optimize and measure respiration in C. elegans with the XF96 respirometer, including the interpretation of parameters and results. The protocol takes ∼2 d to complete, excluding the time spent culturing C. elegans, and it includes (i) the preparation of C. elegans samples, (ii) selection and loading of compounds to be injected, (iii) preparation and execution of a run with the XF96 respirometer and (iv) postexperimental data analysis, including normalization. In addition, we compare our XF96 application with other existing techniques, including the eight-well Seahorse XFp. The main benefits of the XF96 include the limited number of worms required and the high throughput capacity due to the 96-well format.
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Affiliation(s)
- Mandy Koopman
- University of Groningen, University Medical Center Groningen, European Research Institute for the Biology of Ageing, Laboratory of Molecular Neurobiology of Ageing, Groningen, The Netherlands
| | - Helen Michels
- University of Groningen, University Medical Center Groningen, European Research Institute for the Biology of Ageing, Laboratory of Molecular Neurobiology of Ageing, Groningen, The Netherlands
| | - Beverley M. Dancy
- Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, Bethesda, United States
| | - Rashmi Kamble
- Laboratory Genetic Metabolic Diseases, Academic Medical Center, Amsterdam, The Netherlands
| | - Laurent Mouchiroud
- Laboratory of Integrative and Systems Physiology, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland
| | - Johan Auwerx
- Laboratory of Integrative and Systems Physiology, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland
| | - Ellen A.A. Nollen
- University of Groningen, University Medical Center Groningen, European Research Institute for the Biology of Ageing, Laboratory of Molecular Neurobiology of Ageing, Groningen, The Netherlands
| | - Riekelt H. Houtkooper
- Laboratory Genetic Metabolic Diseases, Academic Medical Center, Amsterdam, The Netherlands
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332
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Li Z, Wang JW, Wang WZ, Zhi XF, Zhang Q, Li BW, Wang LJ, Xie KL, Tao JQ, Tang J, Wei S, Zhu Y, Xu H, Zhang DC, Yang L, Xu ZK. Natriuretic peptide receptor A inhibition suppresses gastric cancer development through reactive oxygen species-mediated G2/M cell cycle arrest and cell death. Free Radic Biol Med 2016; 99:593-607. [PMID: 27634171 DOI: 10.1016/j.freeradbiomed.2016.08.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 08/11/2016] [Accepted: 08/14/2016] [Indexed: 12/15/2022]
Abstract
Natriuretic peptide receptor A (NPRA), the major receptor for atrial natriuretic peptide (ANP), has been implicated in tumorigenesis; however, the role of ANP-NPRA signaling in the development of gastric cancer remains unclear. Immunohistochemical analyses indicated that NPRA expression was positively associated with gastric tumor size and cancer stage. NPRA inhibition by shRNA induced G2/M cell cycle arrest, cell death, and autophagy in gastric cancer cells, due to accumulation of reactive oxygen species (ROS). Either genetic or pharmacologic inhibition of autophagy led to caspase-dependent cell death. Therefore, autophagy induced by NPRA silencing may represent a cytoprotective mechanism. ROS accumulation activated c-Jun N-terminal kinase (JNK) and AMP-activated protein kinase (AMPK). ROS-mediated activation of JNK inhibited cell proliferation by disturbing cell cycle and decreased cell viability. In addition, AMPK activation promoted autophagy in NPRA-downregulated cancer cells. Overall, our results indicate that the inhibition of NPRA suppresses gastric cancer development and targeting NPRA may represent a promising strategy for the treatment of gastric cancer.
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Affiliation(s)
- Zheng Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ji-Wei Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wei-Zhi Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiao-Fei Zhi
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China; Department of General Surgery, The Affiliated Hospital of Nantong University, Nantong, China
| | - Qun Zhang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Bo-Wen Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lin-Jun Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kun-Ling Xie
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jin-Qiu Tao
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jie Tang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Song Wei
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yi Zhu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hao Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Dian-Cai Zhang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Li Yang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ze-Kuan Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China; Collaborative Innovation Center For Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China.
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333
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Marcoux G, Duchez AC, Rousseau M, Lévesque T, Boudreau LH, Thibault L, Boilard E. Microparticle and mitochondrial release during extended storage of different types of platelet concentrates. Platelets 2016; 28:272-280. [DOI: 10.1080/09537104.2016.1218455] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Geneviève Marcoux
- Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l’Université Laval, Québec, QC, Canada
- Research and Development, Héma-Québec, Québec, QC, Canada
| | - Anne-Claire Duchez
- Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l’Université Laval, Québec, QC, Canada
| | - Matthieu Rousseau
- Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l’Université Laval, Québec, QC, Canada
| | - Tania Lévesque
- Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l’Université Laval, Québec, QC, Canada
| | - Luc H. Boudreau
- Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l’Université Laval, Québec, QC, Canada
| | - Louis Thibault
- Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l’Université Laval, Québec, QC, Canada
- Research and Development, Héma-Québec, Québec, QC, Canada
| | - Eric Boilard
- Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l’Université Laval, Québec, QC, Canada
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334
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Torralba D, Baixauli F, Sánchez-Madrid F. Mitochondria Know No Boundaries: Mechanisms and Functions of Intercellular Mitochondrial Transfer. Front Cell Dev Biol 2016; 4:107. [PMID: 27734015 PMCID: PMC5039171 DOI: 10.3389/fcell.2016.00107] [Citation(s) in RCA: 254] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 09/14/2016] [Indexed: 12/25/2022] Open
Abstract
Mitochondria regulate multiple cell processes, including calcium signaling, apoptosis and cell metabolism. Mitochondria contain their own circular genome encoding selected subunits of the oxidative phosphorylation complexes. Recent findings reveal that, in addition to being maternally inherited, mitochondria can traverse cell boundaries and thus be horizontally transferred between cells. Although, the physiological relevance of this phenomenon is still under debate, mitochondria uptake rescues mitochondrial respiration defects in recipient cells and regulates signaling, proliferation or chemotherapy resistance in vitro and in vivo. In this review, we outline the pathophysiological consequences of horizontal mitochondrial transfer and offer a perspective on the cellular and molecular mechanisms mediating their intercellular transmission, including tunneling nanotubes, extracellular vesicles, cellular fusion, and GAP junctions. The physiological relevance of mitochondrial transfer and the potential therapeutic application of this exchange for treating mitochondrial-related diseases are discussed.
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Affiliation(s)
- Daniel Torralba
- Signaling and Inflammation Program, Centro Nacional Investigaciones CardiovascularesMadrid, Spain; Servicio de Inmunología, Instituto Investigación Sanitaria Princesa, Universidad Autonoma de MadridMadrid, Spain
| | - Francesc Baixauli
- Signaling and Inflammation Program, Centro Nacional Investigaciones CardiovascularesMadrid, Spain; Servicio de Inmunología, Instituto Investigación Sanitaria Princesa, Universidad Autonoma de MadridMadrid, Spain
| | - Francisco Sánchez-Madrid
- Signaling and Inflammation Program, Centro Nacional Investigaciones CardiovascularesMadrid, Spain; Servicio de Inmunología, Instituto Investigación Sanitaria Princesa, Universidad Autonoma de MadridMadrid, Spain
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335
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Shin HJ, Kwon HK, Lee JH, Anwar MA, Choi S. Etoposide induced cytotoxicity mediated by ROS and ERK in human kidney proximal tubule cells. Sci Rep 2016; 6:34064. [PMID: 27666530 PMCID: PMC5036097 DOI: 10.1038/srep34064] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 09/07/2016] [Indexed: 12/26/2022] Open
Abstract
Etoposide (ETO) is a commonly used chemotherapeutic drug that inhibits topoisomerase II activity, thereby leading to genotoxicity and cytotoxicity. However, ETO has limited application due to its side effects on normal organs, especially the kidney. Here, we report the mechanism of ETO-induced cytotoxicity progression in human kidney proximal tubule (HK-2) cells. Our results show that ETO perpetuates DNA damage, activates mitogen-activated protein kinase (MAPK), and triggers morphological changes, such as cell and nuclear swelling. When NAC, a well-known reactive oxygen species (ROS) scavenger, is co-treated with ETO, it inhibits an ETO-induced increase in mitochondrial mass, mitochondrial DNA (ND1 and ND4) copy number, intracellular ATP level, and mitochondrial biogenesis activators (TFAM, PGC-1α and PGC-1β). Moreover, co-treatment with ETO and NAC inhibits ETO-induced necrosis and cell swelling, but not apoptosis. Studies using MAPK inhibitors reveal that inhibition of extracellular signal regulated kinase (ERK) protects ETO-induced cytotoxicity by inhibiting DNA damage and caspase 3/7 activity. Eventually, ERK inhibitor treated cells are protected from ETO-induced nuclear envelope (NE) rupture and DNA leakage through inhibition of caspase activity. Taken together, these data suggest that ETO mediates cytotoxicity in HK-2 cells through ROS and ERK pathways, which highlight the preventive avenues in ETO-induced cytotoxicity in kidney.
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Affiliation(s)
- Hyeon-Jun Shin
- Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, Korea
| | - Hyuk-Kwon Kwon
- Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, Korea
| | - Jae-Hyeok Lee
- Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, Korea.,Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
| | - Muhammad Ayaz Anwar
- Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, 443-749, Korea
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336
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Lee SK, Law B, Tung CH. Versatile Nanodelivery Platform to Maximize siRNA Combination Therapy. Macromol Biosci 2016; 17. [PMID: 27654639 DOI: 10.1002/mabi.201600294] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 08/23/2016] [Indexed: 12/31/2022]
Abstract
The unsatisfactory outcomes of typical multiple cytotoxic chemotherapeutic combination therapies used to treat patients have fostered a need for new unconventional combinations of therapeutic agents. Among the candidates, siRNA has been widely discussed and tested. However, the right time right place codelivery of siRNA with other types of active ingredients is challenging because of the possible differences among their physiochemical and pharmacodynamics properties. To accomplish a synergistic cytotoxic effect, a nanoassembly is thus designed to codeliver siRNA with other therapeutic agents. A siRNA, targeting prosurvival gene for the p75 neurotrophin receptor, and an organelle-fusing peptide, targeting mitochondria, are layered onto a nanotemplate by charge-charge interaction, followed by a layer of CD44 targeting ligand. The formulated triple-functional nanomedicine is efficiently internalized by the CD44 expressing triple-negative breast cancer cells. The encapsulated siRNA and the pro-apoptotic peptide are released inside cells, silencing the intended prosurvival gene, and inducing apoptosis by fusing the mitochondrial membrane, respectively. A synergistic effect is achieved by this three-agent combination. The design of the developed multifunctional nanomedicine can be generalized to deliver other siRNA and drugs for a maximum therapeutic combination with minimal off-targeting effects.
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Affiliation(s)
- Seung Koo Lee
- Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, 413 East 69th Street, Box 290, New York, NY, 10021, USA
| | - Benedict Law
- Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, 413 East 69th Street, Box 290, New York, NY, 10021, USA
| | - Ching-Hsuan Tung
- Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, 413 East 69th Street, Box 290, New York, NY, 10021, USA
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337
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Abstract
Mitochondrial DNA transfer has recently received attention from physicians. The transfer techniques place genetic material from the egg nucleus of a woman with a mitochondrial DNA mutation into a healthy donated egg from which the nuclear DNA was removed. This technology intends to reconstruct a mitochondria-competent egg to produce a baby. Three approaches: (1) pronuclear transfer; (2) metaphase II spindle transfer (ST); and (3) polar body (PB) transfer, have been proposed and applied in animal models with very low levels of heteroplasmy. Because there is no curative treatment for patients with mitochondrial dysfunction, the UK government has allowed the use of this pioneering technique to prevent the transmission of rare and devastating mitochondrial diseases. Despite general safety in the observation period, this technology involves germline modification, raising scientific and ethical questions in the public. In this review, we focus on this unprecedented technology and discuss its clinical application in the future.
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Affiliation(s)
- Liang Xu
- a Research Center for Translational Medicine , Shanghai East Hospital, Tongji University School of Medicine , Shanghai, China
| | - Rui Shi
- b Department of Obstetrics and Gynecology , Shanghai East Hospital, Tongji University School of Medicine , Shanghai, China
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338
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Li J, Li J, Aipire A, Gao L, Huo S, Luo J, Zhang F. Phenylethanoid Glycosides from Cistanche tubulosa Inhibits the Growth of B16-F10 Cells both in Vitro and in Vivo by Induction of Apoptosis via Mitochondria-dependent Pathway. J Cancer 2016; 7:1877-1887. [PMID: 27698928 PMCID: PMC5039372 DOI: 10.7150/jca.15512] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 07/24/2016] [Indexed: 01/06/2023] Open
Abstract
Cistanche tubulosa phenylethanoid glycosides (CTPG) have been shown various biological activities including anti-allergy, hepatoprotective activity and bone regeneration. However, the anti-tumor activity of CTPG needs to be investigated. CTPG was used to treat B16-F10 cells both in vitro and in vivo. We found that CTPG dramatically changed the morphology of B16-F10 cells, and significantly reduced the viability of B16-F10 cells in a dose-dependent and time-dependent manner, which might be mediated by CTPG-induced apoptosis and cell cycle arrest. After CTPG treatment, the expressions of BAX and BCL-2 were up-regulated and down-regulated, respectively. Moreover, mitochondrial membrane potential was reduced and ROS generation was increased. Consequently, the levels of cytochrome c and cleaved-caspase-3 and -9 were up-regulated by CTPG treatment but not for cleaved-caspase-8. We further observed that CTPG significantly inhibited the tumor growth in vivo and improved the survival rate of tumor mice. We also observed that CTPG promoted the proliferation of splenocytes and increased the proportions of CD4+ and CD8+ T cells in spleens of tumor mice. The results showed that CTPG induced the apoptosis of B16-F10 cells through mitochondria-dependent pathway, suggesting that CTPG could be a potential candidate for treatment of cancer.
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Affiliation(s)
- Jinyu Li
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang, China
| | - Jinyao Li
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang, China
| | - Adila Aipire
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang, China
| | - Li Gao
- Xinjiang Laboratory of Uyghur Medical Prescription, Xinjiang Institute of Traditional Uyghur Medicine, Urumqi, Xinjiang, China
| | - Shixia Huo
- Xinjiang Laboratory of Uyghur Medical Prescription, Xinjiang Institute of Traditional Uyghur Medicine, Urumqi, Xinjiang, China
| | - Jiaojiao Luo
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang, China
| | - Fuchun Zhang
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang, China
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339
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Zhao P, Zheng M, Luo Z, Fan X, Sheng Z, Gong P, Chen Z, Zhang B, Ni D, Ma Y, Cai L. Oxygen Nanocarrier for Combined Cancer Therapy: Oxygen-Boosted ATP-Responsive Chemotherapy with Amplified ROS Lethality. Adv Healthc Mater 2016; 5:2161-7. [PMID: 27253453 DOI: 10.1002/adhm.201600121] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 03/29/2016] [Indexed: 12/19/2022]
Abstract
Oxygen nanocarrier (A/D-ONC) with a polymeric core entrapping hemoglobin and a cationic lipid shell absorbing a DOX-intercalating DNA duplex is developed. After endocytosis oxygenated A/D-ONC donates O2 to cancer cells that acts therapeutically by: (1) increasing intracellular ATP content that promotes DOX release, thereby converting ATP to the trigger of detrimental chemotherapy; (2) by synchronously increasing the ROS amount to amplify the lethality to cancer cells.
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Affiliation(s)
- Pengfei Zhao
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Mingbin Zheng
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
- Guangdong Key Laboratory for Research and Development of Natural Drugs; Guangdong Medical University; Dongguan 523808 P. R. China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 P. R. China
| | - Zhenyu Luo
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Xiujun Fan
- Research Laboratory for Reproductive Health; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Zonghai Sheng
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Ping Gong
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Ze Chen
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Baozhen Zhang
- Research Laboratory for Reproductive Health; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Dapeng Ni
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Yifan Ma
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
| | - Lintao Cai
- Guangdong Key Laboratory of Nanomedicine; Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
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340
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Forveille S, Zhou H, Sauvat A, Bezu L, Müller K, Liu P, Zitvogel L, Pierron G, Rekdal Ø, Kepp O, Kroemer G. The oncolytic peptide LTX-315 triggers necrotic cell death. Cell Cycle 2016; 14:3506-12. [PMID: 26566869 DOI: 10.1080/15384101.2015.1093710] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The oncolytic peptide LTX-315 has been designed for killing human cancer cells and turned out to stimulate anti-cancer immune responses when locally injected into tumors established in immunocompetent mice. Here, we investigated the question whether LTX-315 induces apoptosis or necrosis. Transmission electron microscopy or morphometric analysis of chromatin-stained tumor cells revealed that LTX-315 failed to induce apoptotic nuclear condensation and rather induced a necrotic phenotype. Accordingly, LTX-315 failed to stimulate the activation of caspase-3, and inhibition of caspases by means of Z-VAD-fmk was unable to reduce cell killing by LTX-315. In addition, 2 prominent inhibitors of regulated necrosis (necroptosis), namely, necrostatin-1 and cycosporin A, failed to reduce LTX-315-induced cell death. In conclusion, it appears that LTX-315 triggers unregulated necrosis, which may contribute to its pro-inflammatory and pro-immune effects.
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Affiliation(s)
- Sabrina Forveille
- a Metabolomics and Cell Biology Platforms; Gustave Roussy Comprehensive Cancer Institute ; Villejuif , France.,b Equipe 11 labellisée Ligue contre le Cancer; Center de Recherche des Cordeliers; INSERM U 1138 ; Paris , France.,c Université Paris Descartes; Sorbonne Paris Cité ; Paris , France.,d Université Pierre et Marie Curie ; Paris , France
| | - Heng Zhou
- a Metabolomics and Cell Biology Platforms; Gustave Roussy Comprehensive Cancer Institute ; Villejuif , France.,b Equipe 11 labellisée Ligue contre le Cancer; Center de Recherche des Cordeliers; INSERM U 1138 ; Paris , France.,c Université Paris Descartes; Sorbonne Paris Cité ; Paris , France.,d Université Pierre et Marie Curie ; Paris , France.,e University of Paris Sud XI; Kremlin Bicêtre , France
| | - Allan Sauvat
- a Metabolomics and Cell Biology Platforms; Gustave Roussy Comprehensive Cancer Institute ; Villejuif , France.,b Equipe 11 labellisée Ligue contre le Cancer; Center de Recherche des Cordeliers; INSERM U 1138 ; Paris , France.,c Université Paris Descartes; Sorbonne Paris Cité ; Paris , France.,d Université Pierre et Marie Curie ; Paris , France
| | - Lucillia Bezu
- a Metabolomics and Cell Biology Platforms; Gustave Roussy Comprehensive Cancer Institute ; Villejuif , France.,b Equipe 11 labellisée Ligue contre le Cancer; Center de Recherche des Cordeliers; INSERM U 1138 ; Paris , France.,c Université Paris Descartes; Sorbonne Paris Cité ; Paris , France.,d Université Pierre et Marie Curie ; Paris , France.,e University of Paris Sud XI; Kremlin Bicêtre , France
| | - Kevin Müller
- a Metabolomics and Cell Biology Platforms; Gustave Roussy Comprehensive Cancer Institute ; Villejuif , France.,b Equipe 11 labellisée Ligue contre le Cancer; Center de Recherche des Cordeliers; INSERM U 1138 ; Paris , France.,c Université Paris Descartes; Sorbonne Paris Cité ; Paris , France.,d Université Pierre et Marie Curie ; Paris , France.,e University of Paris Sud XI; Kremlin Bicêtre , France
| | - Peng Liu
- a Metabolomics and Cell Biology Platforms; Gustave Roussy Comprehensive Cancer Institute ; Villejuif , France.,b Equipe 11 labellisée Ligue contre le Cancer; Center de Recherche des Cordeliers; INSERM U 1138 ; Paris , France.,c Université Paris Descartes; Sorbonne Paris Cité ; Paris , France.,d Université Pierre et Marie Curie ; Paris , France.,e University of Paris Sud XI; Kremlin Bicêtre , France
| | - Laurence Zitvogel
- e University of Paris Sud XI; Kremlin Bicêtre , France.,f Department of Immuno-Oncology ; Institut de Cancérologie Gustave Roussy Cancer Campus ; Villejuif , France.,g Institut National de la Santé et de la Recherche Medicale (INSERM), U1015 ; Villejuif , France.,h Center of Clinical Investigations in Biotherapies of Cancer (CICBT) 507 ; Villejuif , France
| | - Gérard Pierron
- i Gustave Roussy Comprehensive Cancer Center; Villejuif; France CNRS; UMR8122 , Villejuif , France
| | - Øystein Rekdal
- j University of Tromsø; Institute of Medical Biology ; Tromsø , Norway.,k Lytix Biopharma ; Oslo , Norway
| | - Oliver Kepp
- a Metabolomics and Cell Biology Platforms; Gustave Roussy Comprehensive Cancer Institute ; Villejuif , France.,b Equipe 11 labellisée Ligue contre le Cancer; Center de Recherche des Cordeliers; INSERM U 1138 ; Paris , France.,c Université Paris Descartes; Sorbonne Paris Cité ; Paris , France.,d Université Pierre et Marie Curie ; Paris , France
| | - Guido Kroemer
- a Metabolomics and Cell Biology Platforms; Gustave Roussy Comprehensive Cancer Institute ; Villejuif , France.,b Equipe 11 labellisée Ligue contre le Cancer; Center de Recherche des Cordeliers; INSERM U 1138 ; Paris , France.,c Université Paris Descartes; Sorbonne Paris Cité ; Paris , France.,d Université Pierre et Marie Curie ; Paris , France.,l Pôle de Biologie; Hôpital Européen Georges Pompidou; AP-HP ; Paris , France.,m Karolinska Institute ; Department of Women's and Children's Health; Karolinska University Hospital ; Stockholm , Sweden
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341
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Yousefi S, Simon HU. NETosis - Does It Really Represent Nature's "Suicide Bomber"? Front Immunol 2016; 7:328. [PMID: 27617015 PMCID: PMC4999959 DOI: 10.3389/fimmu.2016.00328] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 08/16/2016] [Indexed: 12/31/2022] Open
Affiliation(s)
- Shida Yousefi
- Institute of Pharmacology, University of Bern , Bern , Switzerland
| | - Hans-Uwe Simon
- Institute of Pharmacology, University of Bern , Bern , Switzerland
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342
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Wilkins HM, Koppel SJ, Weidling IW, Roy N, Ryan LN, Stanford JA, Swerdlow RH. Extracellular Mitochondria and Mitochondrial Components Act as Damage-Associated Molecular Pattern Molecules in the Mouse Brain. J Neuroimmune Pharmacol 2016; 11:622-628. [PMID: 27562848 DOI: 10.1007/s11481-016-9704-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 08/17/2016] [Indexed: 11/26/2022]
Abstract
Mitochondria and mitochondrial debris are found in the brain's extracellular space, and extracellular mitochondrial components can act as damage associated molecular pattern (DAMP) molecules. To characterize the effects of potential mitochondrial DAMP molecules on neuroinflammation, we injected either isolated mitochondria or mitochondrial DNA (mtDNA) into hippocampi of C57BL/6 mice and seven days later measured markers of inflammation. Brains injected with whole mitochondria showed increased Tnfα and decreased Trem2 mRNA, increased GFAP protein, and increased NFκB phosphorylation. Some of these effects were also observed in brains injected with mtDNA (decreased Trem2 mRNA, increased GFAP protein, and increased NFκB phosphorylation), and mtDNA injection also caused several unique changes including increased CSF1R protein and AKT phosphorylation. To further establish the potential relevance of this response to Alzheimer's disease (AD), a brain disorder characterized by neurodegeneration, mitochondrial dysfunction, and neuroinflammation we also measured App mRNA, APP protein, and Aβ1-42 levels. We found mitochondria (but not mtDNA) injections increased these parameters. Our data show that in the mouse brain extracellular mitochondria and its components can induce neuroinflammation, extracellular mtDNA or mtDNA-associated proteins can contribute to this effect, and mitochondria derived-DAMP molecules can influence AD-associated biomarkers.
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Affiliation(s)
- Heather M Wilkins
- Department of Neurology, University of Kansas Medical Center, Kansas City, KS, USA
- University of Kansas Alzheimer's Disease Center, Kansas City, KS, USA
| | - Scott J Koppel
- Department of Neurology, University of Kansas Medical Center, Kansas City, KS, USA
- University of Kansas Alzheimer's Disease Center, Kansas City, KS, USA
| | - Ian W Weidling
- University of Kansas Alzheimer's Disease Center, Kansas City, KS, USA
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Nairita Roy
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Lauren N Ryan
- University of Kansas Alzheimer's Disease Center, Kansas City, KS, USA
| | - John A Stanford
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Russell H Swerdlow
- Department of Neurology, University of Kansas Medical Center, Kansas City, KS, USA.
- University of Kansas Alzheimer's Disease Center, Kansas City, KS, USA.
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA.
- Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, KS, USA.
- University of Kansas School of Medicine, MS 2012, Landon Center on Aging, 3901 Rainbow Blvd, Kansas City, KS, 66160, USA.
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343
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The oncolytic peptide LTX-315 kills cancer cells through Bax/Bak-regulated mitochondrial membrane permeabilization. Oncotarget 2016; 6:26599-614. [PMID: 26378049 PMCID: PMC4694939 DOI: 10.18632/oncotarget.5613] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 08/26/2015] [Indexed: 12/31/2022] Open
Abstract
LTX-315 has been developed as an amphipathic cationic peptide that kills cancer cells. Here, we investigated the putative involvement of mitochondria in the cytotoxic action of LTX-315. Subcellular fractionation of LTX-315-treated cells, followed by mass spectrometric quantification, revealed that the agent was enriched in mitochondria. LTX-315 caused an immediate arrest of mitochondrial respiration without any major uncoupling effect. Accordingly, LTX-315 disrupted the mitochondrial network, dissipated the mitochondrial inner transmembrane potential, and caused the release of mitochondrial intermembrane proteins into the cytosol. LTX-315 was relatively inefficient in stimulating mitophagy. Cells lacking the two pro-apoptotic multidomain proteins from the BCL-2 family, BAX and BAK, were less susceptible to LTX-315-mediated killing. Moreover, cells engineered to lose their mitochondria (by transfection with Parkin combined with treatment with a protonophore causing mitophagy) were relatively resistant against LTX-315, underscoring the importance of this organelle for LTX-315-mediated cytotoxicity. Altogether, these results support the notion that LTX-315 kills cancer cells by virtue of its capacity to permeabilize mitochondrial membranes.
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344
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Wiens KE, Ernst JD. The Mechanism for Type I Interferon Induction by Mycobacterium tuberculosis is Bacterial Strain-Dependent. PLoS Pathog 2016; 12:e1005809. [PMID: 27500737 PMCID: PMC4976988 DOI: 10.1371/journal.ppat.1005809] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Accepted: 07/13/2016] [Indexed: 12/30/2022] Open
Abstract
Type I interferons (including IFNαβ) are innate cytokines that may contribute to pathogenesis during Mycobacterium tuberculosis (Mtb) infection. To induce IFNβ, Mtb must gain access to the host cytosol and trigger stimulator of interferon genes (STING) signaling. A recently proposed model suggests that Mtb triggers STING signaling through bacterial DNA binding cyclic GMP-AMP synthase (cGAS) in the cytosol. The aim of this study was to test the generalizability of this model using phylogenetically distinct strains of the Mtb complex (MTBC). We infected bone marrow derived macrophages with strains from MTBC Lineages 2, 4 and 6. We found that the Lineage 6 strain induced less IFNβ, and that the Lineage 2 strain induced more IFNβ, than the Lineage 4 strain. The strains did not differ in their access to the host cytosol and IFNβ induction by each strain required both STING and cGAS. We also found that the three strains shed similar amounts of bacterial DNA. Interestingly, we found that the Lineage 6 strain was associated with less mitochondrial stress and less mitochondrial DNA (mtDNA) in the cytosol compared with the Lineage 4 strain. Treating macrophages with a mitochondria-specific antioxidant reduced cytosolic mtDNA and inhibited IFNβ induction by the Lineage 2 and 4 strains. We also found that the Lineage 2 strain did not induce more mitochondrial stress than the Lineage 4 strain, suggesting that additional pathways contribute to higher IFNβ induction. These results indicate that the mechanism for IFNβ by Mtb is more complex than the established model suggests. We show that mitochondrial dynamics and mtDNA contribute to IFNβ induction by Mtb. Moreover, we show that the contribution of mtDNA to the IFNβ response varies by MTBC strain and that additional mechanisms exist for Mtb to induce IFNβ.
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Affiliation(s)
- Kirsten E. Wiens
- Department of Pathology, New York University School of Medicine, New York, New York, United States of America
- Division of Infectious Disease, Department of Medicine, New York University School of Medicine, New York, New York, United States of America
| | - Joel D. Ernst
- Department of Pathology, New York University School of Medicine, New York, New York, United States of America
- Division of Infectious Disease, Department of Medicine, New York University School of Medicine, New York, New York, United States of America
- Department of Microbiology, New York University School of Medicine, New York, New York, United States of America
- * E-mail:
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345
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Benigni A, Perico L, Macconi D. Mitochondrial Dynamics Is Linked to Longevity and Protects from End-Organ Injury: The Emerging Role of Sirtuin 3. Antioxid Redox Signal 2016; 25:185-99. [PMID: 26972664 DOI: 10.1089/ars.2016.6682] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
SIGNIFICANCE Mitochondrial integrity is instrumental in protecting against damage associated with aging and a variety of chronic disease conditions. Mitochondrial silent information regulator 3 (Sirt3) plays pivotal roles in maintaining mitochondrial homeostasis by regulating different aspects of the organelle processes. RECENT ADVANCES Mitochondria are highly dynamic organelles that constantly fuse and divide to maintain normal cell function, and perturbation in mitochondrial dynamics is responsible for mitochondrial dysfunction. Improved knowledge of mitochondrial physiology has disclosed the pleiotropic role of Sirt3 in mitochondria and shows how alterations in protein expression and/or activity may have an important impact on aging-associated organ dysfunction. CRITICAL ISSUES This review describes updated experimental evidence on the role of mitochondrial dysfunction during aging and renal diseases and highlights the emerging role of Sirt3 as a crucial regulator of mitochondrial dynamics. FUTURE DIRECTIONS Strategies that activate Sirt3 may offer attractive therapies to achieve healthy longevity and preserve functional integrity of multiple organs. Antioxid. Redox Signal. 25, 185-199.
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Affiliation(s)
- Ariela Benigni
- IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso, Bergamo, Italy
| | - Luca Perico
- IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso, Bergamo, Italy
| | - Daniela Macconi
- IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso, Bergamo, Italy
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346
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Tran Q, Lee H, Park J, Kim SH, Park J. Targeting Cancer Metabolism - Revisiting the Warburg Effects. Toxicol Res 2016; 32:177-93. [PMID: 27437085 PMCID: PMC4946416 DOI: 10.5487/tr.2016.32.3.177] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 04/21/2016] [Accepted: 05/20/2016] [Indexed: 12/27/2022] Open
Abstract
After more than half of century since the Warburg effect was described, this atypical metabolism has been standing true for almost every type of cancer, exhibiting higher glycolysis and lactate metabolism and defective mitochondrial ATP production. This phenomenon had attracted many scientists to the problem of elucidating the mechanism of, and reason for, this effect. Several models based on oncogenic studies have been proposed, such as the accumulation of mitochondrial gene mutations, the switch from oxidative phosphorylation respiration to glycolysis, the enhancement of lactate metabolism, and the alteration of glycolytic genes. Whether the Warburg phenomenon is the consequence of genetic dysregulation in cancer or the cause of cancer remains unknown. Moreover, the exact reasons and physiological values of this peculiar metabolism in cancer remain unclear. Although there are some pharmacological compounds, such as 2-deoxy-D-glucose, dichloroacetic acid, and 3-bromopyruvate, therapeutic strategies, including diet, have been developed based on targeting the Warburg effect. In this review, we will revisit the Warburg effect to determine how much scientists currently understand about this phenomenon and how we can treat the cancer based on targeting metabolism.
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Affiliation(s)
- Quangdon Tran
- Department of Pharmacology and Medical Science, Metabolic Diseases and Cell Signaling Laboratory, Research Institute for Medical Sciences, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Hyunji Lee
- Department of Pharmacology and Medical Science, Metabolic Diseases and Cell Signaling Laboratory, Research Institute for Medical Sciences, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Jisoo Park
- Department of Pharmacology and Medical Science, Metabolic Diseases and Cell Signaling Laboratory, Research Institute for Medical Sciences, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Seon-Hwan Kim
- Department of Neurosurgery, Institute for Cancer Research, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Jongsun Park
- Department of Pharmacology and Medical Science, Metabolic Diseases and Cell Signaling Laboratory, Research Institute for Medical Sciences, College of Medicine, Chungnam National University, Daejeon, Korea
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347
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Baek Y, Park SJ, Zhou X, Kim G, Kim HM, Yoon J. A viscosity sensitive fluorescent dye for real-time monitoring of mitochondria transport in neurons. Biosens Bioelectron 2016; 86:885-891. [PMID: 27494813 DOI: 10.1016/j.bios.2016.07.026] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 07/05/2016] [Accepted: 07/08/2016] [Indexed: 12/12/2022]
Abstract
We present here a viscosity sensitive fluorescent dye, namely thiophene dihemicyanine (TDHC), that enables the specific staining of mitochondria. In comparison to the common mitochondria tracker (Mitotracker Deep Red, MTDR), this dye demonstrated its unique ability for robust staining of mitochondria with high photostability and ultrahigh signal-to-noise ratio (SNR). Moreover, TDHC also showed high sensitivity towards mitochondria membrane potential (ΔΨm) and intramitochondria viscosity change. Consequently, this dye was utilized in real-time monitoring of mitochondria transport in primary cortical neurons. Finally, the Two-Photon Microscopy (TPM) imaging ability of TDHC was also demonstrated.
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Affiliation(s)
- Yeonju Baek
- Department of Chemistry and Nano Science, EwhaWomans University, Seoul, 120-750, Republic of Korea
| | - Sang Jun Park
- Department of Energy Systems Research, Ajou University, Suwon, 443-749, Republic of Korea
| | - Xin Zhou
- Research Centre for Chemical Biology, Department of Chemistry, Yanbian University, Yanji, 133002, PR China; Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of Education, Yanbian University, Yanji, 133002, PR China.
| | - Gyungmi Kim
- Department of Chemistry and Nano Science, EwhaWomans University, Seoul, 120-750, Republic of Korea
| | - Hwan Myung Kim
- Department of Energy Systems Research, Ajou University, Suwon, 443-749, Republic of Korea.
| | - Juyoung Yoon
- Department of Chemistry and Nano Science, EwhaWomans University, Seoul, 120-750, Republic of Korea.
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348
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Perico L, Morigi M, Benigni A. Mitochondrial Sirtuin 3 and Renal Diseases. Nephron Clin Pract 2016; 134:14-9. [PMID: 27362524 DOI: 10.1159/000444370] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 01/31/2016] [Indexed: 11/19/2022] Open
Abstract
Mitochondria are dynamic organelles whose functions are tightly regulated at multiple levels to maintain proper cellular homeostasis. Mitochondrial Sirtuin 3 (SIRT3), which belongs to an evolutionary conserved family of NAD+-dependent deacetylases, is a key regulator of the mitochondrial respiratory chain, ATP production, and fatty acid β-oxidation, and it exerts an antioxidant activity. Changes in SIRT3 expression are critical in the pathophysiology of several diseases, such as metabolic syndrome, diabetes, cancer, and aging. In experimental acute kidney injury (AKI), impairment of renal function and development of tubular injury are associated with SIRT3 reduction and mitochondrial dysfunction in proximal tubuli. SIRT3-deficient mice are more susceptible to AKI and die. Pharmacological manipulations able to increase SIRT3 preserve mitochondrial integrity, markedly limit renal injury, and accelerate functional recovery. This review highlights all the selective rescue mechanisms that point to the key role of SIRT3 as a new therapeutic target for curing renal diseases.
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Affiliation(s)
- Luca Perico
- IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Anna Maria Astori Centre, Kilometro Rosso Science and Technology Park, Bergamo, Italy
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349
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Helmke C, Raab M, Rödel F, Matthess Y, Oellerich T, Mandal R, Sanhaji M, Urlaub H, Rödel C, Becker S, Strebhardt K. Ligand stimulation of CD95 induces activation of Plk3 followed by phosphorylation of caspase-8. Cell Res 2016; 26:914-34. [PMID: 27325299 PMCID: PMC4973331 DOI: 10.1038/cr.2016.78] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 02/25/2016] [Accepted: 04/18/2016] [Indexed: 02/07/2023] Open
Abstract
Upon interaction of the CD95 receptor with its ligand, sequential association of the adaptor molecule FADD (MORT1), pro-forms of caspases-8/10, and the caspase-8/10 regulator c-FLIP leads to the formation of a death-inducing signaling complex. Here, we identify polo-like kinase (Plk) 3 as a new interaction partner of the death receptor CD95. The enzymatic activity of Plk3 increases following interaction of the CD95 receptor with its ligand. Knockout (KO) or knockdown of caspase-8, CD95 or FADD prevents activation of Plk3 upon CD95 stimulation, suggesting a requirement of a functional DISC for Plk3 activation. Furthermore, we identify caspase-8 as a new substrate for Plk3. Phosphorylation occurs on T273 and results in stimulation of caspase-8 proapoptotic function. Stimulation of CD95 in cells expressing a non-phosphorylatable caspase-8-T273A mutant in a rescue experiment or in Plk3-KO cells generated by CRISPR/Cas9 reduces the processing of caspase-8 prominently. Low T273 phosphorylation correlates significantly with low Plk3 expression in a cohort of 95 anal tumor patients. Our data suggest a novel mechanism of kinase activation within the Plk family and propose a new model for the stimulation of the extrinsic death pathway in tumors with high Plk3 expression.
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Affiliation(s)
- Christina Helmke
- Department of Gynecology, Goethe University, 60590 Frankfurt, Germany
| | - Monika Raab
- Department of Gynecology, Goethe University, 60590 Frankfurt, Germany
| | - Franz Rödel
- Department of Radiotherapy and Oncology, Goethe University, 60590 Frankfurt, Germany.,German Cancer Consortium (DKTK)/German Cancer Research Center, 69120 Heidelberg, Germany
| | - Yves Matthess
- Department of Gynecology, Goethe University, 60590 Frankfurt, Germany.,German Cancer Consortium (DKTK)/German Cancer Research Center, 69120 Heidelberg, Germany
| | - Thomas Oellerich
- German Cancer Consortium (DKTK)/German Cancer Research Center, 69120 Heidelberg, Germany.,Department of Medicine II, Hematology/Oncology, Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Ranadip Mandal
- Department of Gynecology, Goethe University, 60590 Frankfurt, Germany.,German Cancer Consortium (DKTK)/German Cancer Research Center, 69120 Heidelberg, Germany
| | - Mourad Sanhaji
- Department of Gynecology, Goethe University, 60590 Frankfurt, Germany
| | - Henning Urlaub
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany.,Bioanalytics, Institute for Clinical Chemistry, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075 Göttingen, Germany
| | - Claus Rödel
- Department of Radiotherapy and Oncology, Goethe University, 60590 Frankfurt, Germany.,German Cancer Consortium (DKTK)/German Cancer Research Center, 69120 Heidelberg, Germany
| | - Sven Becker
- Department of Gynecology, Goethe University, 60590 Frankfurt, Germany
| | - Klaus Strebhardt
- Department of Gynecology, Goethe University, 60590 Frankfurt, Germany.,German Cancer Consortium (DKTK)/German Cancer Research Center, 69120 Heidelberg, Germany
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Negative prognostic impact of regulatory T cell infiltration in surgically resected esophageal cancer post-radiochemotherapy. Oncotarget 2016; 6:20840-50. [PMID: 26369701 PMCID: PMC4673233 DOI: 10.18632/oncotarget.4428] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 06/05/2015] [Indexed: 01/14/2023] Open
Abstract
Ever accumulating evidence indicates that the long-term effects of radiotherapy and chemotherapy largely depend on the induction (or restoration) of an anticancer immune response. Here, we investigated this paradigm in the context of esophageal carcinomas treated by neo-adjuvant radiochemotherapy, in a cohort encompassing 196 patients. We found that the density of the FOXP3+ regulatory T cell (Treg) infiltrate present in the residual tumor (or its scar) correlated with the pathological response (the less Tregs the more pronounced was the histological response) and predicted cancer-specific survival. In contrast, there was no significant clinical impact of the frequency of CD8+ cytotoxic T cells. At difference with breast or colorectal cancer, a loss-of-function allele of toll like receptor 4 (TLR4) improved cancer-specific survival of patients with esophageal cancer. While a loss-of-function allele of purinergic receptor P2X, ligand-gated ion channel, 7 (P2RX7) failed to affect cancer-specific survival, its presence did correlate with an increase in Treg infiltration. Altogether, these results corroborate the notion that the immunosurveillance seals the fate of patients with esophageal carcinomas treated with conventional radiochemotherapy.
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