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Wang Q, Wang Y, Wu J, Xie X, Qin H, Huang C, Li Z, Ling Z, Li R. Association between BCL2 interacting protein 3 like (BNIP3L) genetic polymorphisms and the risk of multiple myeloma in China. Hematology 2024; 29:2367918. [PMID: 38934722 DOI: 10.1080/16078454.2024.2367918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND The BCL2 interacting protein 3-like (BNIP3L) protein is involved in multiple myeloma (MM) development and progression. This study aims to explore the connection between BNIP3L single-nucleotide polymorphisms (SNPs) and MM. METHODS SNaPshot was used to examine six SNP loci of the BNIP3L gene in enrolled subjects. The relationship between these loci and MM susceptibility and prognosis was explored. Survival analysis was used to evaluate the impact of different factors on patient survival. RESULTS The rs2874670 AA genotype and A allele were associated with increased MM risk (P < 0.05). The CCACAC haplotype had a higher frequency in MM, while CCGCAC had a higher frequency in normal patients (all P < 0.05). Patients with R-ISS stage I and II had higher survival rates than those with stage III (P < 0.05). Patients, who received chemotherapy followed by autologous stem cell transplantation, had longer survival time than those who only received chemotherapy (P < 0.05). Low levels of LDH and β2-MG were associated with better survival rates (P < 0.05). Cox regression identified that LDH levels, β2-MG levels, and R-ISS staging were the risk factors for the death of MM. Mann-Whitney U test found a significant difference in survival time between MM patients with different BNIP3L rs2874670 genotypes after BD chemotherapy (P < 0.05). CONCLUSION To our knowledge, this is the first study to find that BNIP3L rs2874670 could increase MM susceptibility in China. Different BNIP3L rs2874670 genotypes may affect the prognosis of MM patients receiving BD chemotherapy.
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Affiliation(s)
- Qicai Wang
- Department of Laboratory Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Yu Wang
- Department of Laboratory Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Jing Wu
- Department of Scientific Research, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Xing Xie
- Department of Scientific Research, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Hongping Qin
- Department of Scientific Research, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Chunni Huang
- Department of Laboratory Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Zhongqing Li
- Department of Hematology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Zhian Ling
- Department of Orthopedics, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Ruolin Li
- Department of Scientific Research, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People's Republic of China
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Bian C, Ji S, Xue R, Zhou L, Sun J, Ji H. Molecular cloning and characterization of BNIP3 and NIX1/2 and their role in DHA-induced mitophagy and apoptosis in grass carp (Ctenopharyngodon idellus) adipocytes. Gene 2024; 899:148140. [PMID: 38185291 DOI: 10.1016/j.gene.2024.148140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 11/23/2023] [Accepted: 01/03/2024] [Indexed: 01/09/2024]
Abstract
B-cell lymphoma-2 and adenovirus E1B 19-kDa-interacting protein 3 (BNIP3) and BNIP3 like (BNIP3L or NIX) play a vital role in regulating mitophagy and the intrinsic apoptosis in mammals, but their gene characterizations remain unclear in fish. Herein, bnip3, nix1 and nix2 were isolated and characterized from grass carp (Ctenopharyngodon idellus), which encode peptides of 194, 233 and 222 amino acids, respectively. As typical BH3-only proteins, grass carp BNIP3, NIX1 and NIX2 proteins contain BH3 and C-terminal transmembrane domains for inducing apoptosis. Moreover, the LC3-interacting region motif of BNIP3, NIX1 and NIX2 is also conserved in grass carp. Phylogenetic analyses also demonstrated that nix1 and nix2 may have originated from the genome duplication event. Expression pattern analysis indicated that bnip3, nix1 and nix2 were highest expressed in brain, followed by eye (bnip3) and liver (nix1 and nix2). BNIP3, NIX1 and NIX2 localized to the nucleus and the cytoplasm, with a predominant localization to mitochondria within the cytoplasm. In the present study, we found that 200 μM DHA impaired the mitochondrial function, manifested as the decreased antioxidant ability, cellular ATP content and mitochondrial membrane potential in grass carp adipocytes. In addition, the gene expression and enzyme activities of caspase family were significantly increased in 200 μM DHA group, indicating that adipocyte apoptosis was induced. Meanwhile, DHA increased the gene expression of bnip3, nix1 and nix2 in a dose-dependent manner in grass carp adipocytes. The colocalization of mitochondria and lysosomes was promoted by 200 μM DHA treatment, implying that BNIP3/NIX-related mitophagy was activated in adipocytes. Based on these findings, it can be inferred that BNIP3/NIX-related mitophagy may be involved in the adipocyte apoptosis induced by DHA in grass carp.
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Affiliation(s)
- Chenchen Bian
- College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling 712100, China
| | - Shanghong Ji
- College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling 712100, China
| | - Rongrong Xue
- College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling 712100, China
| | - Lu Zhou
- College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling 712100, China
| | - Jian Sun
- College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling 712100, China
| | - Hong Ji
- College of Animal Science and Technology, Northwest Agriculture and Forestry University, Yangling 712100, China.
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3
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Negash M, Chanyalew M, Girma T, Alemu F, Alcantara D, Towler B, Davey G, Boyton RJ, Altmann DM, Howe R, Newport MJ. Evidence for immune activation in pathogenesis of the HLA class II associated disease, podoconiosis. Nat Commun 2024; 15:2020. [PMID: 38448477 PMCID: PMC10917762 DOI: 10.1038/s41467-024-46347-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 02/23/2024] [Indexed: 03/08/2024] Open
Abstract
Available evidences suggest that podoconiosis is triggered by long term exposure of bare feet to volcanic red clay soil particles. Previous genome-wide studies in Ethiopia showed association between the HLA class II region and disease susceptibility. However, functional relationships between the soil trigger, immunogenetic risk factors and the immunological basis of the disease are uncharted. Therefore, we aimed to characterise the immune profile and gene expression of podoconiosis patients relative to endemic healthy controls. Peripheral blood immunophenotyping of T cells indicated podoconiosis patients had significantly higher CD4 and CD8 T cell surface HLA-DR expression compared to healthy controls while CD62L expression was significantly lower. The levels of the activation markers CD40 and CD86 were significantly higher on monocytes and dendritic cell subsets in patients compared to the controls. RNA sequencing gene expression data indicated higher transcript levels for activation, scavenger receptors, and apoptosis markers while levels were lower for histones, T cell receptors, variable, and constant immunoglobulin chain in podoconiosis patients compared to healthy controls. Our finding provides evidence that podoconiosis is associated with high levels of immune activation and inflammation with over-expression of genes within the pro-inflammatory axis. This offers further support to a working hypothesis of podoconiosis as soil particle-driven, HLA-associated disease of immunopathogenic aetiology.
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Affiliation(s)
- Mikias Negash
- Brighton and Sussex Centre for Global Health Research, Department of Global Health and Infection, Brighton and Sussex Medical School, Brighton, UK.
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia.
- Department of Medical Laboratory Science, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.
| | | | - Tigist Girma
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Fekadu Alemu
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Diana Alcantara
- Brighton and Sussex Centre for Global Health Research, Department of Global Health and Infection, Brighton and Sussex Medical School, Brighton, UK
| | - Ben Towler
- Department of Biochemistry and Biomedicine, School of Life Sciences, University of Sussex, Brighton, UK
| | - Gail Davey
- Brighton and Sussex Centre for Global Health Research, Department of Global Health and Infection, Brighton and Sussex Medical School, Brighton, UK
- School of Public Health, Addis Ababa University, Addis Ababa, Ethiopia
| | - Rosemary J Boyton
- Department of Infectious Disease, Imperial College London, London, UK
| | - Daniel M Altmann
- Department of Immunology and Inflammation, Imperial College London, London, UK
| | - Rawleigh Howe
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Melanie J Newport
- Brighton and Sussex Centre for Global Health Research, Department of Global Health and Infection, Brighton and Sussex Medical School, Brighton, UK
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4
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Wang JZ, Paulus P, Niu Y, Zhu L, Morisseau C, Rawling T, Murray M, Hammock BD, Zhou F. The Role of Autophagy in Human Uveal Melanoma and the Development of Potential Disease Biomarkers and Novel Therapeutic Paradigms. Biomedicines 2024; 12:462. [PMID: 38398064 PMCID: PMC10886749 DOI: 10.3390/biomedicines12020462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/15/2024] [Accepted: 02/17/2024] [Indexed: 02/25/2024] Open
Abstract
Autophagy is a form of programmed cell degradation that enables the maintenance of homeostasis in response to extracellular stress stimuli. Autophagy is primarily activated by starvation and mediates the degradation, removal, or recycling of cell cytoplasm, organelles, and intracellular components in eukaryotic cells. Autophagy is also involved in the pathogenesis of human diseases, including several cancers. Human uveal melanoma (UM) is the primary intraocular malignancy in adults and has an extremely poor prognosis; at present there are no effective therapies. Several studies have suggested that autophagy is important in UM. By understanding the mechanisms of activation of autophagy in UM it may be possible to develop biomarkers to provide more definitive disease prognoses and to identify potential drug targets for the development of new therapeutic strategies. This article reviews the current information regarding autophagy in UM that could facilitate biomarker and drug development.
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Affiliation(s)
- Janney Z. Wang
- Molecular Drug Development Group, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
| | - Paus Paulus
- Molecular Drug Development Group, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
| | - Yihe Niu
- Molecular Drug Development Group, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
| | - Ling Zhu
- Save Sight Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Christophe Morisseau
- Department of Entomology and Nematology, UCD Comprehensive Cancer Center, University of California, Davis, CA 95616, USA (B.D.H.)
| | - Tristan Rawling
- School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Ultimo, NSW 2007, Australia;
| | - Michael Murray
- Molecular Drug Development Group, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
| | - Bruce D. Hammock
- Department of Entomology and Nematology, UCD Comprehensive Cancer Center, University of California, Davis, CA 95616, USA (B.D.H.)
| | - Fanfan Zhou
- Molecular Drug Development Group, Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
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5
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Zhang Y, Jia Z, Gao X, Zhao J, Zhang H. Polystyrene nanoparticles induced mammalian intestine damage caused by blockage of BNIP3/NIX-mediated mitophagy and gut microbiota alteration. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 907:168064. [PMID: 37884137 DOI: 10.1016/j.scitotenv.2023.168064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 10/01/2023] [Accepted: 10/21/2023] [Indexed: 10/28/2023]
Abstract
Nanoplastics possess the capacity for cellular internalization, and consequentially disrupt mitochondrial functionality, precipitating aberrations in energy metabolism. Given this, the potential accumulation of nanoplastics in alimentary sources presents a considerable hazard to the mammalian gastrointestinal system. While mitophagy serves as a cytoprotective mechanism that sustains redox homeostasis through the targeted removal of compromised mitochondria, the regulatory implications of mitophagy in nanoplastic-induced toxicity remain an underexplored domain. In the present investigation, polystyrene (PS) nanoparticles, with a diameter of 80 nm employed as a representative model to assess their toxicological impact and propensity to instigate mitophagy in intestinal cells both in vitro and in vivo. Data indicated that PS nanoparticles elicited BNIP3/NIX-mediated mitophagy within the intestinal milieu. Strikingly, the impediment of this degradation process at elevated concentrations was correlated with exacerbated pathological ramifications. In vitro assays corroborated that high-dosage cellular uptake of PS nanoparticles obstructed the mitophagy pathway. Furthermore, treatment with PS nanoparticles engendered alterations in gut microbiota composition and manifested a proclivity to modulate nutritional metabolism. Collectively, these findings elucidate that oral exposure to PS nanoparticles culminates in the inhibition of mitophagy and induces perturbations in the intestinal microbiota. This contributes valuable insights into the toxicological repercussions of nanoplastics on mammalian gastrointestinal health.
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Affiliation(s)
- Yilun Zhang
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Key Laboratory of Food Nutrition and Safety of Shandong Normal University, College of Life Science, Shandong Normal University, Jinan, Shandong 250014, China
| | - Zhenzhen Jia
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Key Laboratory of Food Nutrition and Safety of Shandong Normal University, College of Life Science, Shandong Normal University, Jinan, Shandong 250014, China
| | - Xianlei Gao
- Department of Orthopedic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Juan Zhao
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Key Laboratory of Food Nutrition and Safety of Shandong Normal University, College of Life Science, Shandong Normal University, Jinan, Shandong 250014, China
| | - Hongyan Zhang
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Key Laboratory of Food Nutrition and Safety of Shandong Normal University, College of Life Science, Shandong Normal University, Jinan, Shandong 250014, China.
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6
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Zhang X, Zhou H, Chang X. Involvement of mitochondrial dynamics and mitophagy in diabetic endothelial dysfunction and cardiac microvascular injury. Arch Toxicol 2023; 97:3023-3035. [PMID: 37707623 DOI: 10.1007/s00204-023-03599-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 08/30/2023] [Indexed: 09/15/2023]
Abstract
Endothelial cells (ECs), found in the innermost layer of blood vessels, are crucial for maintaining the structure and function of coronary microcirculation. Dysregulated coronary microcirculation poses a fundamental challenge in diabetes-related myocardial microvascular injury, impacting myocardial blood perfusion, thrombogenesis, and inflammation. Extensive research aims to understand the mechanistic connection and functional relationship between cardiac EC dysfunction and the development, diagnosis, and treatment of diabetes-related myocardial microvascular injury. Despite the low mitochondrial content in ECs, mitochondria act as sensors of environmental and cellular stress, influencing EC viability, structure, and function. Mitochondrial dynamics and mitophagy play a vital role in orchestrating mitochondrial responses to various stressors by regulating morphology, localization, and degradation. Impaired mitochondrial dynamics or reduced mitophagy is associated with EC dysfunction, serving as a potential molecular basis and promising therapeutic target for diabetes-related myocardial microvascular injury. This review introduces newly recognized mechanisms of damaged coronary microvasculature in diabetes-related microvascular injury and provides updated insights into the molecular aspects of mitochondrial dynamics and mitophagy. Additionally, novel targeted therapeutic approaches against diabetes-related microvascular injury or endothelial dysfunction, focusing on mitochondrial fission and mitophagy in endothelial cells, are summarized.
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Affiliation(s)
- Xiao Zhang
- Dermatology, Liaocheng Hospital of Traditional Chinese Medicine, Liaocheng, 252000, China
| | - Hao Zhou
- Department of Cardiology, The Sixth Medical Center of People's Liberation Army General Hospital, Beijing, 100048, China.
| | - Xing Chang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, 5 Beixiagge, Xicheng District, Beijing, 100053, China.
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7
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Liu L, Li Y, Chen G, Chen Q. Crosstalk between mitochondrial biogenesis and mitophagy to maintain mitochondrial homeostasis. J Biomed Sci 2023; 30:86. [PMID: 37821940 PMCID: PMC10568841 DOI: 10.1186/s12929-023-00975-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 09/13/2023] [Indexed: 10/13/2023] Open
Abstract
Mitochondrial mass and quality are tightly regulated by two essential and opposing mechanisms, mitochondrial biogenesis (mitobiogenesis) and mitophagy, in response to cellular energy needs and other cellular and environmental cues. Great strides have been made to uncover key regulators of these complex processes. Emerging evidence has shown that there exists a tight coordination between mitophagy and mitobiogenesis, and their defects may cause many human diseases. In this review, we will first summarize the recent advances made in the discovery of molecular regulations of mitobiogenesis and mitophagy and then focus on the mechanism and signaling pathways involved in the simultaneous regulation of mitobiogenesis and mitophagy in the response of tissue or cultured cells to energy needs, stress, or pathophysiological conditions. Further studies of the crosstalk of these two opposing processes at the molecular level will provide a better understanding of how the cell maintains optimal cellular fitness and function under physiological and pathophysiological conditions, which holds promise for fighting aging and aging-related diseases.
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Affiliation(s)
- Lei Liu
- Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China.
- Institute for Stem Cell and Regenerative Medicine, Beijing, China.
| | - Yanjun Li
- Center of Cell Response, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Guo Chen
- Center of Cell Response, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Quan Chen
- Center of Cell Response, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China.
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8
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Wu HX, He PM, Jia R. Effects of µ-Conotoxin GIIIB on the cellular activity of mouse skeletal musculoblast: combined transcriptome and proteome analysis. Proteome Sci 2023; 21:17. [PMID: 37828502 PMCID: PMC10568904 DOI: 10.1186/s12953-023-00221-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 10/03/2023] [Indexed: 10/14/2023] Open
Abstract
µ-Conotoxin GIIIB (µ-CTX GIIIB) is a polypeptide containing three disulfide bridges, produced by the sea snail Conus geographus. This study was aimed to explored the cytotoxic effects of µ-CTX GIIIB on mouse skeletal musculoblast (Sol8). Sol8 cells were exposed to ouabain and veratridine to establish the cell injury model, and then treated with µ-CTX GIIIB. CCK-8 was adopted to evaluate the cytotoxicity of µ-CTX GIIIB. Then, proteomics and transcriptome were conducted, and the explore the differentially expressed genes (DEGs) and differentially expressed proteins (DEPs) affected by µ-CTX GIIIB were found. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis was used to investigate the affected signaling pathways. µ-CTX GIIIB increased the cell survival rate of injured Sol8 cells. We found and identified 1,663 DEGs and 444 DEPs influenced by µ-CTX GIIIB. 106 pairs of correlated DEGs and DEPs were selected by combining transcriptome and proteome data. The results of KEGG and GO analysis showed that µ-CTX GIIB affected the cell cycle, apoptosis, DNA damage and repair, lipid metabolism and other biological processes of Sol8 cells. µ-CTX GIIIB could affected cell cycle regulation, DNA damage repair, and activation of tumor factors, with potential carcinogenic effects. Our results provide an important basis for the study of in vitro toxicity, the mechanism of toxicity and injury prevention by µ-CTX GIIIB.
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Affiliation(s)
- Han-Xi Wu
- College of Marine Ecology and Environment, Shanghai Ocean University, No.999, Huchenghuan Rd, Nanhui New City, Shanghai, 201306, P.R. China
| | - Pei-Min He
- College of Marine Ecology and Environment, Shanghai Ocean University, No.999, Huchenghuan Rd, Nanhui New City, Shanghai, 201306, P.R. China
| | - Rui Jia
- College of Marine Ecology and Environment, Shanghai Ocean University, No.999, Huchenghuan Rd, Nanhui New City, Shanghai, 201306, P.R. China.
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9
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Uoselis L, Nguyen TN, Lazarou M. Mitochondrial degradation: Mitophagy and beyond. Mol Cell 2023; 83:3404-3420. [PMID: 37708893 DOI: 10.1016/j.molcel.2023.08.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 08/10/2023] [Accepted: 08/17/2023] [Indexed: 09/16/2023]
Abstract
Mitochondria are central hubs of cellular metabolism that also play key roles in signaling and disease. It is therefore fundamentally important that mitochondrial quality and activity are tightly regulated. Mitochondrial degradation pathways contribute to quality control of mitochondrial networks and can also regulate the metabolic profile of mitochondria to ensure cellular homeostasis. Here, we cover the many and varied ways in which cells degrade or remove their unwanted mitochondria, ranging from mitophagy to mitochondrial extrusion. The molecular signals driving these varied pathways are discussed, including the cellular and physiological contexts under which the different degradation pathways are engaged.
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Affiliation(s)
- Louise Uoselis
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia; Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia; Aligning Science Across Parkinson's Collaborative Research Network, Chevy Chase, MD 20185, USA
| | - Thanh Ngoc Nguyen
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia; Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia; Aligning Science Across Parkinson's Collaborative Research Network, Chevy Chase, MD 20185, USA.
| | - Michael Lazarou
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia; Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia; Aligning Science Across Parkinson's Collaborative Research Network, Chevy Chase, MD 20185, USA.
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10
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F AR, Quadrilatero J. Emerging role of mitophagy in myoblast differentiation and skeletal muscle remodeling. Semin Cell Dev Biol 2023; 143:54-65. [PMID: 34924331 DOI: 10.1016/j.semcdb.2021.11.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 11/26/2021] [Accepted: 11/30/2021] [Indexed: 12/17/2022]
Abstract
Mitochondrial turnover in the form of mitophagy is emerging as a central process in maintaining cellular function. The degradation of damaged mitochondria through mitophagy is particularly important in cells/tissues that exhibit high energy demands. Skeletal muscle is one such tissue that requires precise turnover of mitochondria in several conditions in order to optimize energy production and prevent bioenergetic crisis. For instance, the formation of skeletal muscle (i.e., myogenesis) is accompanied by robust turnover of low-functioning mitochondria to eventually allow the formation of high-functioning mitochondria. In mature skeletal muscle, alterations in mitophagy-related signaling occur during exercise, aging, and various disease states. Nonetheless, several questions regarding the direct role of mitophagy in various skeletal muscle conditions remain unknown. Furthermore, given the heterogenous nature of skeletal muscle with respect to various cellular and molecular properties, and the plasticity in these properties in various conditions, the involvement and characterization of mitophagy requires more careful consideration in this tissue. Therefore, this review will highlight the known mechanisms of mitophagy in skeletal muscle, and discuss their involvement during myogenesis and various skeletal muscle conditions. This review also provides important considerations for the accurate measurement of mitophagy and interpretation of data in skeletal muscle.
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Affiliation(s)
- Ahmad Rahman F
- Department of Kinesiology & Health Sciences, University of Waterloo, Waterloo, ON, Canada
| | - Joe Quadrilatero
- Department of Kinesiology & Health Sciences, University of Waterloo, Waterloo, ON, Canada.
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11
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Li J, Wu J, Zhou X, Lu Y, Ge Y, Zhang X. Targeting neuronal mitophagy in ischemic stroke: an update. BURNS & TRAUMA 2023; 11:tkad018. [PMID: 37274155 PMCID: PMC10232375 DOI: 10.1093/burnst/tkad018] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 01/29/2023] [Accepted: 03/19/2023] [Indexed: 06/06/2023]
Abstract
Cerebral ischemia is a neurological disorder associated with complex pathological mechanisms, including autophagic degradation of neuronal mitochondria, or termed mitophagy, following ischemic events. Despite being well-documented, the cellular and molecular mechanisms underlying the regulation of neuronal mitophagy remain unknown. So far, the evidence suggests neuronal autophagy and mitophagy are separately regulated in ischemic neurons, the latter being more likely activated by reperfusional injury. Specifically, given the polarized morphology of neurons, mitophagy is regulated by different neuronal compartments, with axonal mitochondria being degraded by autophagy in the cell body following ischemia-reperfusion insult. A variety of molecules have been associated with neuronal adaptation to ischemia, including PTEN-induced kinase 1, Parkin, BCL2 and adenovirus E1B 19-kDa-interacting protein 3 (Bnip3), Bnip3-like (Bnip3l) and FUN14 domain-containing 1. Moreover, it is still controversial whether mitophagy protects against or instead aggravates ischemic brain injury. Here, we review recent studies on this topic and provide an updated overview of the role and regulation of mitophagy during ischemic events.
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Affiliation(s)
- Jun Li
- Department of Clinical Pharmacy, the First Affiliated Hospital, Zhejiang University School of Medicine, Qingchun Road 79, Xiacheng District, Hangzhou, China
| | - Jiaying Wu
- Department of Clinical Pharmacy, the First Affiliated Hospital, Zhejiang University School of Medicine, Qingchun Road 79, Xiacheng District, Hangzhou, China
| | - Xinyu Zhou
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Yuhangtang Road 866, Xihu District, Hangzhou, China
| | - Yangyang Lu
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Yuhangtang Road 866, Xihu District, Hangzhou, China
| | - Yuyang Ge
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Yuhangtang Road 866, Xihu District, Hangzhou, China
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12
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Perrone M, Patergnani S, Di Mambro T, Palumbo L, Wieckowski MR, Giorgi C, Pinton P. Calcium Homeostasis in the Control of Mitophagy. Antioxid Redox Signal 2023; 38:581-598. [PMID: 36112728 DOI: 10.1089/ars.2022.0122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Significance: Maintenance of mitochondrial quality is essential for cellular homeostasis. Among processes responsible for preserving healthy mitochondria, mitophagy selectively eliminates dysfunctional mitochondria by targeting them to the autophagosome for degradation. Alterations in mitophagy lead to the accumulation of damaged mitochondria, which plays an essential role in several diseases such as carcinogenesis and tumor progression, neurodegenerative disorders, and autoimmune and cardiovascular pathologies. Recent Advances: Calcium (Ca2+) plays a fundamental role in cell life, modulating several pathways, such as gene expression, proliferation, differentiation, metabolism, cell death, and survival. Indeed, because it is involved in all these events, Ca2+ is the most versatile intracellular second messenger. Being a process that limits cellular degeneration, mitophagy participates in cellular fate decisions. Several mitochondrial parameters, such as membrane potential, structure, and reactive oxygen species, can trigger the activation of mitophagic machinery. These parameters regulate not only mitophagy but also the mitochondrial Ca2+ uptake. Critical Issues: Ca2+ handling is fundamental in regulating ATP production by mitochondria and mitochondrial quality control processes. Despite the growing literature about the link between Ca2+ and mitophagy, the mechanism by which Ca2+ homeostasis regulates mitophagy is still debated. Future Directions: Several studies have revealed that excessive mitophagy together with altered mitochondrial Ca2+ uptake leads to different dysfunctions in numerous diseases. Thus, therapeutic modulation of these pathways is considered a promising treatment. Antioxid. Redox Signal. 38, 581-598.
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Affiliation(s)
- Mariasole Perrone
- Department of Medical Sciences, Section of Experimental Medicine and Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Simone Patergnani
- Department of Medical Sciences, Section of Experimental Medicine and Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Tommaso Di Mambro
- Department of Medical Sciences, Section of Experimental Medicine and Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Laura Palumbo
- Department of Medical Sciences, Section of Experimental Medicine and Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Mariusz R Wieckowski
- Laboratory of Mitochondrial Biology and Metabolism, Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Carlotta Giorgi
- Department of Medical Sciences, Section of Experimental Medicine and Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Paolo Pinton
- Department of Medical Sciences, Section of Experimental Medicine and Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
- Maria Cecilia Hospital, GVM Care & Research, Cotignola, Ravenna, Italy
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13
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Li P, Li S, Wang L, Li H, Wang Y, Liu H, Wang X, Zhu X, Liu Z, Ye F, Zhang Y. Mitochondrial dysfunction in hearing loss: Oxidative stress, autophagy and NLRP3 inflammasome. Front Cell Dev Biol 2023; 11:1119773. [PMID: 36891515 PMCID: PMC9986271 DOI: 10.3389/fcell.2023.1119773] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 02/07/2023] [Indexed: 02/22/2023] Open
Abstract
Sensorineural deafness becomes an inevitable worldwide healthy problem, yet the current curative therapy is limited. Emerging evidences demonstrate mitochondrial dysfunction plays a vital role of in the pathogenesis of deafness. Reactive oxygen species (ROS)-induced mitochondrial dysfunction combined with NLRP3 inflammasome activation is involved in cochlear damage. Autophagy not only clears up undesired proteins and damaged mitochondria (mitophagy), but also eliminate excessive ROS. Appropriate enhancement of autophagy can reduce oxidative stress, inhibit cell apoptosis, and protect auditory cells. In addition, we further discuss the interplays linking ROS generation, NLRP3 inflammasome activation, and autophagy underlying the pathogenesis of deafness, including ototoxic drugs-, noise- and aging-related hearing loss.
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Affiliation(s)
- Peipei Li
- Department of Integrated Traditional and Western Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Province Research Center for Kidney Disease, Zhengzhou, China
| | - Shen Li
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Le Wang
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hongmin Li
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yang Wang
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hongbing Liu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xin Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaodan Zhu
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhangsuo Liu
- Department of Integrated Traditional and Western Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Province Research Center for Kidney Disease, Zhengzhou, China
| | - Fanglei Ye
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yuan Zhang
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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14
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Sidestream Smoke Extracts from Harm-Reduction and Conventional Camel Cigarettes Inhibit Osteogenic Differentiation via Oxidative Stress and Differential Activation of intrinsic Apoptotic Pathways. Antioxidants (Basel) 2022; 11:antiox11122474. [PMID: 36552682 PMCID: PMC9774253 DOI: 10.3390/antiox11122474] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/11/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Epidemiological studies suggest cigarette smoking as a probable environmental factor for a variety of congenital anomalies, including low bone mass, increased fracture risk and poor skeletal health. Human and animal in vitro models have confirmed hypomineralization of differentiating cell lines with sidestream smoke being more harmful to developing cells than mainstream smoke. Furthermore, first reports are emerging to suggest a differential impact of conventional versus harm-reduction tobacco products on bone tissue as it develops in the embryo or in vitro. To gather first insight into the molecular mechanism of such differences, we assessed the effect of sidestream smoke solutions from Camel (conventional) and Camel Blue (harm-reduction) cigarettes using a human embryonic stem cell osteogenic differentiation model. Sidestream smoke from the conventional Camel cigarettes concentration-dependently inhibited in vitro calcification triggered by high levels of mitochondrially generated oxidative stress, loss of mitochondrial membrane potential, and reduced ATP production. Camel sidestream smoke also induced DNA damage and caspase 9-dependent apoptosis. Camel Blue-exposed cells, in contrast, invoked only intermediate levels of reactive oxygen species insufficient to activate caspase 3/7. Despite the absence of apoptotic gene activation, damage to the mitochondrial phenotype was still noted concomitant with activation of an anti-inflammatory gene signature and inhibited mineralization. Collectively, the presented findings in differentiating pluripotent stem cells imply that embryos may exhibit low bone mineral density if exposed to environmental smoke during development.
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15
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Field JT, Gordon JW. BNIP3 and Nix: Atypical regulators of cell fate. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2022; 1869:119325. [PMID: 35863652 DOI: 10.1016/j.bbamcr.2022.119325] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 06/17/2022] [Accepted: 07/05/2022] [Indexed: 11/27/2022]
Abstract
Since their discovery nearly 25 years ago, the BCL-2 family members BNIP3 and BNIP3L (aka Nix) have been labelled 'atypical'. Originally, this was because BNIP3 and Nix have divergent BH3 domains compared to other BCL-2 proteins. In addition, this atypical BH3 domain is dispensable for inducing cell death, which is also unusual for a 'death gene'. Instead, BNIP3 and Nix utilize a transmembrane domain, which allows for dimerization and insertion into and through organelle membranes to elicit cell death. Much has been learned regarding the biological function of these two atypical death genes, including their role in metabolic stress, where BNIP3 is responsive to hypoxia, while Nix responds variably to hypoxia and is also down-stream of PKC signaling and lipotoxic stress. Interestingly, both BNIP3 and Nix respond to signals related to cell atrophy. In addition, our current view of regulated cell death has expanded to include forms of necrosis such as necroptosis, pyroptosis, ferroptosis, and permeability transition-mediated cell death where BNIP3 and Nix have been shown to play context- and cell-type specific roles. Perhaps the most intriguing discoveries in recent years are the results demonstrating roles for BNIP3 and Nix outside of the purview of death genes, such as regulation of proliferation, differentiation/maturation, mitochondrial dynamics, macro- and selective-autophagy. We provide a historical and unbiased overview of these 'death genes', including new information related to alternative splicing and post-translational modification. In addition, we propose to redefine these two atypical members of the BCL-2 family as versatile regulators of cell fate.
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Affiliation(s)
- Jared T Field
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Science, University of Manitoba, Canada; The Diabetes Research Envisioned and Accomplished in Manitoba (DREAM) Theme of the Children's Hospital Research Institute of Manitoba, Winnipeg, Canada
| | - Joseph W Gordon
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Science, University of Manitoba, Canada; College of Nursing, Rady Faculty of Health Science, University of Manitoba, Canada; The Diabetes Research Envisioned and Accomplished in Manitoba (DREAM) Theme of the Children's Hospital Research Institute of Manitoba, Winnipeg, Canada.
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16
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Goiran T, Eldeeb MA, Zorca CE, Fon EA. Hallmarks and Molecular Tools for the Study of Mitophagy in Parkinson’s Disease. Cells 2022; 11:cells11132097. [PMID: 35805181 PMCID: PMC9265644 DOI: 10.3390/cells11132097] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 06/28/2022] [Accepted: 06/29/2022] [Indexed: 01/27/2023] Open
Abstract
The best-known hallmarks of Parkinson’s disease (PD) are the motor deficits that result from the degeneration of dopaminergic neurons in the substantia nigra. Dopaminergic neurons are thought to be particularly susceptible to mitochondrial dysfunction. As such, for their survival, they rely on the elaborate quality control mechanisms that have evolved in mammalian cells to monitor mitochondrial function and eliminate dysfunctional mitochondria. Mitophagy is a specialized type of autophagy that mediates the selective removal of damaged mitochondria from cells, with the net effect of dampening the toxicity arising from these dysfunctional organelles. Despite an increasing understanding of the molecular mechanisms that regulate the removal of damaged mitochondria, the detailed molecular link to PD pathophysiology is still not entirely clear. Herein, we review the fundamental molecular pathways involved in PINK1/Parkin-mediated and receptor-mediated mitophagy, the evidence for the dysfunction of these pathways in PD, and recently-developed state-of-the art assays for measuring mitophagy in vitro and in vivo.
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17
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Eldeeb MA, Esmaili M, Hassan M, Ragheb MA. The Role of PTEN-L in Modulating PINK1-Parkin-Mediated Mitophagy. Neurotox Res 2022; 40:1103-1114. [PMID: 35699891 DOI: 10.1007/s12640-022-00475-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 12/27/2021] [Accepted: 01/13/2022] [Indexed: 11/24/2022]
Abstract
An inherent challenge that mitochondria face is the continuous exposure to diverse stresses which increase their likelihood of dysregulation. In response, human cells have evolved sophisticated quality control mechanisms to identify and eliminate abnormal dysfunctional mitochondria. One pivotal mitochondrial quality control pathway is PINK1/Parkin-dependent mitophagy which mediates the selective removal of the dysfunctional mitochondria from the cell by autophagy. PTEN-induced putative kinase 1 (PINK1) is a mitochondrial Ser/Thr kinase that was originally identified as a gene responsible for autosomal recessive early-onset Parkinson's disease (PD). Notably, upon failure of mitochondrial import, Parkin, another autosomal-recessive PD gene, is recruited to mitochondria and mediates the autophagic clearance of deregulated mitochondria. Importantly, recruitment of Parkin to damaged mitochondria hinges on the accumulation of PINK1 on the outer mitochondrial membrane (OMM). Normally, PINK1 is imported from the cytosol through the translocase of the outer membrane (TOM) complex, a large multimeric channel responsible for the import of most mitochondrial proteins. After import, PINK1 is rapidly degraded. Thus, at steady-state, PINK1 levels are kept low. However, upon mitochondrial import failure, PINK1 accumulates and forms a high-molecular weight > 700 kDa complex with TOM on the OMM. Thus, PINK1 functions as sensor, tagging dysfunctional mitochondria for Parkin-mediated mitophagy. Although much has been learned about the function of PINK1 in mitophagy, the biochemical and structural basis of negative regulation of PINK1 operation and functions is far from clear. Recent work unveiled new players as PTEN-l as negative regulator of PINK1 function. Herein, we review key aspects of mitophagy and PINK1/Parkin-mediated mitophagy with highlighting the role of negative regulation of PINK1 function and presenting some of the key future directions in PD cell biology.
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Affiliation(s)
- Mohamed A Eldeeb
- Department of Neurology and Neurosurgery, Montreal Neurological Institute McGill University, Montreal, QC, Canada. .,Department of Chemistry, Biochemistry Division, Cairo University, Giza, Egypt.
| | - Mansoore Esmaili
- Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Marwa Hassan
- Department of Chemistry, Biochemistry Division, Cairo University, Giza, Egypt
| | - Mohamed A Ragheb
- Department of Chemistry, Biochemistry Division, Cairo University, Giza, Egypt
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18
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Mitochondrial autophagy: molecular mechanisms and implications for cardiovascular disease. Cell Death Dis 2022; 13:444. [PMID: 35534453 PMCID: PMC9085840 DOI: 10.1038/s41419-022-04906-6] [Citation(s) in RCA: 84] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/27/2022] [Accepted: 05/03/2022] [Indexed: 12/13/2022]
Abstract
Mitochondria are highly dynamic organelles that participate in ATP generation and involve calcium homeostasis, oxidative stress response, and apoptosis. Dysfunctional or damaged mitochondria could cause serious consequences even lead to cell death. Therefore, maintaining the homeostasis of mitochondria is critical for cellular functions. Mitophagy is a process of selectively degrading damaged mitochondria under mitochondrial toxicity conditions, which plays an essential role in mitochondrial quality control. The abnormal mitophagy that aggravates mitochondrial dysfunction is closely related to the pathogenesis of many diseases. As the myocardium is a highly oxidative metabolic tissue, mitochondria play a central role in maintaining optimal performance of the heart. Dysfunctional mitochondria accumulation is involved in the pathophysiology of cardiovascular diseases, such as myocardial infarction, cardiomyopathy and heart failure. This review discusses the most recent progress on mitophagy and its role in cardiovascular disease.
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19
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Marmonier A, Velt A, Villeroy C, Rustenholz C, Chesnais Q, Brault V. Differential gene expression in aphids following virus acquisition from plants or from an artificial medium. BMC Genomics 2022; 23:333. [PMID: 35488202 PMCID: PMC9055738 DOI: 10.1186/s12864-022-08545-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 04/11/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Poleroviruses, such as turnip yellows virus (TuYV), are plant viruses strictly transmitted by aphids in a persistent and circulative manner. Acquisition of either virus particles or plant material altered by virus infection is expected to induce gene expression deregulation in aphids which may ultimately alter their behavior. RESULTS By conducting an RNA-Seq analysis on viruliferous aphids fed either on TuYV-infected plants or on an artificial medium containing purified virus particles, we identified several hundreds of genes deregulated in Myzus persicae, despite non-replication of the virus in the vector. Only a few genes linked to receptor activities and/or vesicular transport were common between the two modes of acquisition with, however, a low level of deregulation. Behavioral studies on aphids after virus acquisition showed that M. persicae locomotion behavior was affected by feeding on TuYV-infected plants, but not by feeding on the artificial medium containing the purified virus particles. Consistent with this, genes potentially involved in aphid behavior were deregulated in aphids fed on infected plants, but not on the artificial medium. CONCLUSIONS These data show that TuYV particles acquisition alone is associated with a moderate deregulation of a few genes, while higher gene deregulation is associated with aphid ingestion of phloem from TuYV-infected plants. Our data are also in favor of a major role of infected plant components on aphid behavior.
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Affiliation(s)
- Aurélie Marmonier
- Université de Strasbourg, Institut National de Recherche en Agriculture, Alimentation et Environnement, SVQV UMR-A1131, 68000, Colmar, France
| | - Amandine Velt
- Université de Strasbourg, Institut National de Recherche en Agriculture, Alimentation et Environnement, SVQV UMR-A1131, 68000, Colmar, France
| | - Claire Villeroy
- Université de Strasbourg, Institut National de Recherche en Agriculture, Alimentation et Environnement, SVQV UMR-A1131, 68000, Colmar, France
| | - Camille Rustenholz
- Université de Strasbourg, Institut National de Recherche en Agriculture, Alimentation et Environnement, SVQV UMR-A1131, 68000, Colmar, France
| | - Quentin Chesnais
- Université de Strasbourg, Institut National de Recherche en Agriculture, Alimentation et Environnement, SVQV UMR-A1131, 68000, Colmar, France
| | - Véronique Brault
- Université de Strasbourg, Institut National de Recherche en Agriculture, Alimentation et Environnement, SVQV UMR-A1131, 68000, Colmar, France.
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20
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Emam M, Caballero-Solares A, Xue X, Umasuthan N, Milligan B, Taylor RG, Balder R, Rise ML. Gill and Liver Transcript Expression Changes Associated With Gill Damage in Atlantic Salmon ( Salmo salar). Front Immunol 2022; 13:806484. [PMID: 35418993 PMCID: PMC8996064 DOI: 10.3389/fimmu.2022.806484] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 01/31/2022] [Indexed: 12/24/2022] Open
Abstract
Gill damage represents a significant challenge in the teleost fish aquaculture industry globally, due to the gill’s involvement in several vital functions and direct contact with the surrounding environment. To examine the local and systemic effects accompanying gill damage (which is likely to negatively affect gill function) of Atlantic salmon, we performed a field sampling to collect gill and liver tissue after several environmental insults (e.g., harmful algal blooms). Before sampling, gills were visually inspected and gill damage was scored; gill scores were assigned from pristine [gill score 0 (GS0)] to severely damaged gills (GS3). Using a 44K salmonid microarray platform, we aimed to compare the transcriptomes of pristine and moderately damaged (i.e., GS2) gill tissue. Rank Products analysis (5% percentage of false-positives) identified 254 and 34 upregulated and downregulated probes, respectively, in GS2 compared with GS0. Differentially expressed probes represented genes associated with functions including gill remodeling, wound healing, and stress and immune responses. We performed gill and liver qPCR for all four gill damage scores using microarray-identified and other damage-associated biomarker genes. Transcripts related to wound healing (e.g., neb and klhl41b) were significantly upregulated in GS2 compared with GS0 in the gills. Also, transcripts associated with immune and stress-relevant pathways were dysregulated (e.g., downregulation of snaclec 1-like and upregulation of igkv3) in GS2 compared with GS0 gills. The livers of salmon with moderate gill damage (i.e., GS2) showed significant upregulation of transcripts related to wound healing (i.e., chtop), apoptosis (e.g., bnip3l), blood coagulation (e.g., f2 and serpind1b), transcription regulation (i.e., pparg), and stress-responses (e.g., cyp3a27) compared with livers of GS0 fish. We performed principal component analysis (PCA) using transcript levels for gill and liver separately. The gill PCA showed that PC1 significantly separated GS2 from all other gill scores. The genes contributing most to this separation were pgam2, des, neb, tnnt2, and myom1. The liver PCA showed that PC1 significantly separated GS2 from GS0; levels of hsp70, cyp3a27, pparg, chtop, and serpind1b were the highest contributors to this separation. Also, hepatic acute phase biomarkers (e.g., serpind1b and f2) were positively correlated to each other and to gill damage. Gill damage-responsive biomarker genes and associated qPCR assays arising from this study will be valuable in future research aimed at developing therapeutic diets to improve farmed salmon welfare.
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Affiliation(s)
- Mohamed Emam
- Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | | | - Xi Xue
- Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | | | | | - Richard G Taylor
- Cargill Animal Nutrition and Health, Elk River, MN, United States
| | - Rachel Balder
- Cargill Animal Nutrition and Health, Elk River, MN, United States
| | - Matthew L Rise
- Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
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21
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Li Y, Zheng W, Lu Y, Zheng Y, Pan L, Wu X, Yuan Y, Shen Z, Ma S, Zhang X, Wu J, Chen Z, Zhang X. BNIP3L/NIX-mediated mitophagy: molecular mechanisms and implications for human disease. Cell Death Dis 2021; 13:14. [PMID: 34930907 PMCID: PMC8688453 DOI: 10.1038/s41419-021-04469-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 11/26/2021] [Accepted: 12/10/2021] [Indexed: 02/07/2023]
Abstract
Mitophagy is a highly conserved cellular process that maintains the mitochondrial quantity by eliminating dysfunctional or superfluous mitochondria through autophagy machinery. The mitochondrial outer membrane protein BNIP3L/Nix serves as a mitophagy receptor by recognizing autophagosomes. BNIP3L is initially known to clear the mitochondria during the development of reticulocytes. Recent studies indicated it also engages in a variety of physiological and pathological processes. In this review, we provide an overview of how BNIP3L induces mitophagy and discuss the biological functions of BNIP3L and its regulation at the molecular level. We further discuss current evidence indicating the involvement of BNIP3L-mediated mitophagy in human disease, particularly in cancer and neurological disorders.
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Affiliation(s)
- Yue Li
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Wanqing Zheng
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Yangyang Lu
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Yanrong Zheng
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, College of Pharmacology Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ling Pan
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Xiaoli Wu
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Yang Yuan
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Zhe Shen
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Shijia Ma
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Xingxian Zhang
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Jiaying Wu
- Department of Pharmacy, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhong Chen
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China.
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, College of Pharmacology Science, Zhejiang Chinese Medical University, Hangzhou, China.
| | - Xiangnan Zhang
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of The Ministry of Health of China, Zhejiang University, Hangzhou, China.
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22
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Marinković M, Novak I. A brief overview of BNIP3L/NIX receptor-mediated mitophagy. FEBS Open Bio 2021; 11:3230-3236. [PMID: 34597467 PMCID: PMC8634856 DOI: 10.1002/2211-5463.13307] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/22/2021] [Accepted: 09/28/2021] [Indexed: 11/21/2022] Open
Abstract
Mitophagy is a form of autophagy specialized to selectively remove mitochondria. Although the PINK1/Parkin pathway is the best described mitophagy of damaged mitochondria, receptor/mediated mitophagy seems to have a pivotal role in cellular development and specialization. The most studied mitophagy receptor BCL2/adenovirus E1B 19‐kDa‐interacting protein 3‐like (BNIP3L/NIX) is shown to be important for the programmed removal of healthy mitochondria during terminal differentiation of erythrocytes, but its role has been proven in various cell types. Despite recent advances in our understanding of its regulation by phosphorylation and dimerization, there remain numerous questions on how BNIP3L/NIX tightly balances between cellular life and death decisions. This brief review intends to summarize ongoing dilemmas related to BNIP3L/NIX.
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Affiliation(s)
| | - Ivana Novak
- School of Medicine, University of Split, Croatia
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23
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Wu X, Zheng Y, Liu M, Li Y, Ma S, Tang W, Yan W, Cao M, Zheng W, Jiang L, Wu J, Han F, Qin Z, Fang L, Hu W, Chen Z, Zhang X. BNIP3L/NIX degradation leads to mitophagy deficiency in ischemic brains. Autophagy 2021; 17:1934-1946. [PMID: 32722981 PMCID: PMC8386707 DOI: 10.1080/15548627.2020.1802089] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 07/17/2020] [Accepted: 07/22/2020] [Indexed: 10/23/2022] Open
Abstract
Mitophagy, the elimination of damaged mitochondria through autophagy, promotes neuronal survival in cerebral ischemia. Previous studies found deficient mitophagy in ischemic neurons, but the mechanisms are still largely unknown. We determined that BNIP3L/NIX, a mitophagy receptor, was degraded by proteasomes, which led to mitophagy deficiency in both ischemic neurons and brains. BNIP3L exists as a monomer and homodimer in mammalian cells, but the effects of homodimer and monomer on mitophagy are unclear. Site-specific mutations in the transmembrane domain of BNIP3L (S195A and G203A) only formed the BNIP3L monomer and failed to induce mitophagy. Moreover, overexpression of wild-type BNIP3L, in contrast to the monomeric BNIP3L, rescued the mitophagy deficiency and protected against cerebral ischemic injury. The macroautophagy/autophagy inhibitor 3-MA and the proteasome inhibitor MG132 were used in cerebral ischemic brains to identify how BNIP3L was reduced. We found that MG132 blocked the loss of BNIP3L and subsequently promoted mitophagy in ischemic brains. In addition, the dimeric form of BNIP3L was more prone to be degraded than its monomeric form. Carfilzomib, a drug for multiple myeloma therapy that inhibits proteasomes, reversed the BNIP3L degradation and restored mitophagy in ischemic brains. This treatment protected against either acute or chronic ischemic brain injury. Remarkably, these effects of carfilzomib were abolished in bnip3l-/- mice. Taken together, the present study linked BNIP3L degradation by proteasomes with mitophagy deficiency in cerebral ischemia. We propose carfilzomib as a novel therapy to rescue ischemic brain injury by preventing BNIP3L degradation.Abbreviations: 3-MA: 3-methyladenine; AAV: adeno-associated virus; ATG7: autophagy related 7; BCL2L13: BCL2-like 13 (apoptosis facilitator); BNIP3L/NIX: BCL2/adenovirus E1B interacting protein 3-like; CCCP: carbonyl cyanide 3-chlorophenylhydrazone; CFZ: carfilzomib; COX4I1: cytochrome c oxidase subunit 4I1; CQ: chloroquine; GAPDH: glyceraldehyde-3-phosphate dehydrogenase; GFP: green fluorescent protein; I-R: ischemia-reperfusion; MAP1LC3A/LC3A: microtube-associated protein 1 light chain 3 alpha; MAP1LC3B/LC3B: microtube-associated protein 1 light chain 3 beta; O-R: oxygen and glucose deprivation-reperfusion; OGD: oxygen and glucose deprivation; PHB2: prohibitin 2; pMCAO: permanent middle cerebral artery occlusion; PRKN/PARK2: parkin RBR E3 ubiquitin protein ligase; PT: photothrombosis; SQSTM1: sequestosome 1; tMCAO: transient middle cerebral artery occlusion; TOMM20: translocase of outer mitochondrial membrane 20; TTC: 2,3,5-triphenyltetrazolium hydrochloride.
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Affiliation(s)
- Xiaoli Wu
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Yanrong Zheng
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Mengru Liu
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Yue Li
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Shijia Ma
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Weidong Tang
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Wenping Yan
- The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ming Cao
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Wanqing Zheng
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Lei Jiang
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Jiaying Wu
- The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Feng Han
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Zhenghong Qin
- Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases, Soochow University School of Pharmaceutical Sciences, Suzhou, China
| | - Liang Fang
- Academy for Advanced Interdisciplinary Studies and Department of Biology, Southern University of Science and Technology, Shenzhen, China
| | - Weiwei Hu
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Zhong Chen
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
| | - Xiangnan Zhang
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Key Laboratory of Medical Neurobiology of the Ministry of Health of China, Zhejiang University, Hangzhou, China
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Zhou H, Ren J, Toan S, Mui D. Role of mitochondrial quality surveillance in myocardial infarction: From bench to bedside. Ageing Res Rev 2021; 66:101250. [PMID: 33388396 DOI: 10.1016/j.arr.2020.101250] [Citation(s) in RCA: 135] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/10/2020] [Accepted: 12/22/2020] [Indexed: 12/17/2022]
Abstract
Myocardial infarction (MI) is the irreversible death of cardiomyocyte secondary to prolonged lack of oxygen or fresh blood supply. Historically considered as merely cardiomyocyte powerhouse that manufactures ATP and other metabolites, mitochondrion is recently being identified as a signal regulator that is implicated in the crosstalk and signal integration of cardiomyocyte contraction, metabolism, inflammation, and death. Mitochondria quality surveillance is an integrated network system modifying mitochondrial structure and function through the coordination of various processes including mitochondrial fission, fusion, biogenesis, bioenergetics, proteostasis, and degradation via mitophagy. Mitochondrial fission favors the elimination of depolarized mitochondria through mitophagy, whereas mitochondrial fusion preserves the mitochondrial network upon stress through integration of two or more small mitochondria into an interconnected phenotype. Mitochondrial biogenesis represents a regenerative program to replace old and damaged mitochondria with new and healthy ones. Mitochondrial bioenergetics is regulated by a metabolic switch between glucose and fatty acid usage, depending on oxygen availability. To maintain the diversity and function of mitochondrial proteins, a specialized protein quality control machinery regulates protein dynamics and function through the activity of chaperones and proteases, and induction of the mitochondrial unfolded protein response. In this review, we provide an overview of the molecular mechanisms governing mitochondrial quality surveillance and highlight the most recent preclinical and clinical therapeutic approaches to restore mitochondrial fitness during both MI and post-MI heart failure.
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Affiliation(s)
- Hao Zhou
- Department of Cardiology, Chinese PLA General Hospital, Medical School of Chinese PLA, Beijing 100853, China.
| | - Jun Ren
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY 82071, USA
| | - Sam Toan
- Department of Chemical Engineering, University of Minnesota-Duluth, Duluth, MN 55812, USA
| | - David Mui
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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25
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Messeha SS, Zarmouh NO, Asiri A, Soliman KFA. Rosmarinic acid-induced apoptosis and cell cycle arrest in triple-negative breast cancer cells. Eur J Pharmacol 2020; 885:173419. [PMID: 32750370 PMCID: PMC7541730 DOI: 10.1016/j.ejphar.2020.173419] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 01/06/2023]
Abstract
Rosmarinic acid (RA) is a polyphenolic compound with various pharmacological properties, including, anti-inflammatory, immunomodulatory, and neuroprotective, as well as having antioxidant and anticancer activities. This study evaluated the effects and mechanisms of RA in two racially different triple-negative breast cancer (TNBC) cell lines. Results obtained show that RA significantly caused cytotoxic and antiproliferative effects in both cell lines in a dose- and time-dependent manner. Remarkably, RA induced cell cycle arrest-related apoptosis and altered the expression of many apoptosis-involved genes differently. In MDA-MB-231 cells, RA arrested the cells in the G0/G1 phase. In contrast, the data suggest that RA causes S-phase arrest in MDA-MB-468 cells, leading to a 2-fold increase in the apoptotic effect compared to MDA-MB-231 cells. Further, in MDA-MB-231 cells, RA significantly upregulated the mRNA expression of three genes: harakiri (HRK), tumor necrosis factor receptor superfamily 25 (TNFRSF25), and BCL-2 interacting protein 3 (BNIP3). In contrast, in the MDA-MB-468 cell line, the compound induced a significant transcription activation in three genes, including TNF, growth arrest and DNA damage-inducible 45 alpha (GADD45A), and BNIP3. Furthermore, RA repressed the expression of TNF receptor superfamily 11B (TNFRSF11B) in MDA-MB-231 cells in comparison to the ligand TNF superfamily member 10 (TNFSF10) and baculoviral IAP repeat-containing 5 (BIRC5) in MDA-MB-468 cells. In conclusion, the data suggest that the polyphenol RA may have a potential role in TNBC therapies, particularly in MDA-MB-468 cells.
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Affiliation(s)
- Samia S Messeha
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, 1415 ML King Blvd, Room G 134 H New Pharmacy Building, Tallahassee, FL, 32307, United States
| | - Najla O Zarmouh
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, 1415 ML King Blvd, Room G 134 H New Pharmacy Building, Tallahassee, FL, 32307, United States
| | - Abrar Asiri
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, 1415 ML King Blvd, Room G 134 H New Pharmacy Building, Tallahassee, FL, 32307, United States
| | - Karam F A Soliman
- Division of Pharmaceutical Sciences, College of Pharmacy & Pharmaceutical Sciences, Florida A&M University, 1415 ML King Blvd, Room G 134 H New Pharmacy Building, Tallahassee, FL, 32307, United States.
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26
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Kazemi T, Huang S, Avci NG, Waits CMK, Akay YM, Akay M. Investigating the influence of perinatal nicotine and alcohol exposure on the genetic profiles of dopaminergic neurons in the VTA using miRNA-mRNA analysis. Sci Rep 2020; 10:15016. [PMID: 32929144 PMCID: PMC7490691 DOI: 10.1038/s41598-020-71875-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 08/04/2020] [Indexed: 12/11/2022] Open
Abstract
Nicotine and alcohol are two of the most commonly used and abused recreational drugs, are often used simultaneously, and have been linked to significant health hazards. Furthermore, patients diagnosed with dependence on one drug are highly likely to be dependent on the other. Several studies have shown the effects of each drug independently on gene expression within many brain regions, including the ventral tegmental area (VTA). Dopaminergic (DA) neurons of the dopamine reward pathway originate from the VTA, which is believed to be central to the mechanism of addiction and drug reinforcement. Using a well-established rat model for both nicotine and alcohol perinatal exposure, we investigated miRNA and mRNA expression of dopaminergic (DA) neurons of the VTA in rat pups following perinatal alcohol and joint nicotine-alcohol exposure. Microarray analysis was then used to profile the differential expression of both miRNAs and mRNAs from DA neurons of each treatment group to further explore the altered genes and related biological pathways modulated. Predicted and validated miRNA-gene target pairs were analyzed to further understand the roles of miRNAs within these networks following each treatment, along with their post transcription regulation points affecting gene expression throughout development. This study suggested that glutamatergic synapse and axon guidance pathways were specifically enriched and many miRNAs and genes were significantly altered following alcohol or nicotine-alcohol perinatal exposure when compared to saline control. These results provide more detailed insight into the cell proliferation, neuronal migration, neuronal axon guidance during the infancy in rats in response to perinatal alcohol/ or nicotine-alcohol exposure.
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Affiliation(s)
- Tina Kazemi
- Department of Biomedical Engineering, University of Houston, Houston, TX, 77204, USA
| | - Shuyan Huang
- Department of Biomedical Engineering, University of Houston, Houston, TX, 77204, USA
| | - Naze G Avci
- Department of Biomedical Engineering, University of Houston, Houston, TX, 77204, USA
| | - Charlotte Mae K Waits
- Department of Biomedical Engineering, University of Houston, Houston, TX, 77204, USA
| | - Yasemin M Akay
- Department of Biomedical Engineering, University of Houston, Houston, TX, 77204, USA
| | - Metin Akay
- Department of Biomedical Engineering, University of Houston, Houston, TX, 77204, USA.
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27
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Zuo Z, Jing K, Wu H, Wang S, Ye L, Li Z, Yang C, Pan Q, Liu WJ, Liu HF. Mechanisms and Functions of Mitophagy and Potential Roles in Renal Disease. Front Physiol 2020; 11:935. [PMID: 32903665 PMCID: PMC7438724 DOI: 10.3389/fphys.2020.00935] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 07/13/2020] [Indexed: 12/19/2022] Open
Abstract
Mitophagy is an evolutionarily conserved process to selectively remove damaged or unnecessary mitochondria via the autophagic machinery. In this review, we focus on recent advances in the molecular mechanisms of mitophagy and how mitophagy contributes to cellular homeostasis in physiological and pathological contexts. We also briefly review and discuss the crosstalk between mitophagy and renal disease, highlighting its modulation as a potentially effective therapeutic strategy to treat kidney diseases such as acute kidney injury (AKI), diabetic kidney disease (DKD), and lupus nephritis (LN).
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Affiliation(s)
- Zhenying Zuo
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Kaipeng Jing
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Hongluan Wu
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Shujun Wang
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Lin Ye
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Zhihang Li
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Chen Yang
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Qingjun Pan
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Wei Jing Liu
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Key Laboratory of Chinese Internal Medicine, Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China.,Renal Research Institution of Beijing University of Chinese Medicine, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Hua-Feng Liu
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
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28
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Hypoxia regulates the degradation of non-nuclear organelles during lens differentiation through activation of HIF1a. Exp Eye Res 2020; 198:108129. [PMID: 32628953 DOI: 10.1016/j.exer.2020.108129] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 06/05/2020] [Accepted: 06/23/2020] [Indexed: 12/31/2022]
Abstract
Formation of the eye lens depends on the continuous differentiation of lens epithelial cells into lens fiber cells. To attain their mature structure and transparent function, nascent lens fiber cells must complete a precise cellular remodeling program hallmarked by the complete elimination of organelles to form the core lens organelle-free zone (OFZ). Lacking a blood supply, the lens resides in a hypoxic environment that results in a decreasing oxygen concentration from the lens surface to the lens core. This oxygen gradient results in a hypoxic microenvironment in the region of the lens where immature lens fiber cells initiate loss of organelles to form the core OFZ. These features of the lens suggest a potential role for low lens oxygen levels in the regulation of organelle degradation and other events critical for mature lens fiber cell formation. Hypoxia activates the master regulator of the hypoxic response, hypoxia-inducible factor 1a (HIF1a) that regulates hypoxia-responsive genes. To identify a potential role for hypoxia and HIF1a in the elimination of organelles during lens fiber cell maturation, we tested the requirement for hypoxia in the degradation of non-nuclear organelles in ex vivo cultured embryonic chick lenses by monitoring the degradation of mitochondria (MT), Golgi apparatus (GA) and endoplasmic reticulum (ER) under conditions of low (1% O2) and high (21% O2) oxygen. We also examined the requirement for HIF1a activation for elimination of these organelles under the same conditions using a specific HIF1a activator (DMOG) and a specific HIF1a inhibitor (chetomin) and examined the requirements for hypoxia and HIF1a for regulating transcription of BNIP3L that we previously showed to be required for elimination of non-nuclear lens organelles. We used ChIP-qPCR to confirm direct binding of HIF1a to the 5' untranslated region of the BNIP3L gene. Finally, we examined the effects of expressing an oxygen insensitive mutant form of HIF1a (P402A/P565A) and BNIP3L on non-nuclear organelle degradation. Our data demonstrate that hypoxia and HIF1a are required for the degradation of non-nuclear organelles during lens fiber cell formation and that they regulate this process by governing BNIP3L transcription. Our results also provide evidence that hypoxia and HIF1a are essential for achieving mature lens structure.
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29
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Ma K, Chen G, Li W, Kepp O, Zhu Y, Chen Q. Mitophagy, Mitochondrial Homeostasis, and Cell Fate. Front Cell Dev Biol 2020; 8:467. [PMID: 32671064 PMCID: PMC7326955 DOI: 10.3389/fcell.2020.00467] [Citation(s) in RCA: 293] [Impact Index Per Article: 73.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 05/20/2020] [Indexed: 12/26/2022] Open
Abstract
Mitochondria are highly plastic and dynamic organelles that have graded responses to the changing cellular, environmental, and developmental cues. Mitochondria undergo constant mitochondrial fission and fusion, mitochondrial biogenesis, and mitophagy, which coordinately control mitochondrial morphology, quantity, quality, turnover, and inheritance. Mitophagy is a cellular process that selectively removes the aged and damaged mitochondria via the specific sequestration and engulfment of mitochondria for subsequent lysosomal degradation. It plays a pivotal role in reinstating cellular homeostasis in normal physiology and conditions of stress. Damaged mitochondria may either instigate innate immunity through the overproduction of ROS or the release of mtDNA, or trigger cell death through the release of cytochrome c and other apoptogenic factors when mitochondria damage is beyond repair. Distinct molecular machineries and signaling pathways are found to regulate these mitochondrial dynamics and behaviors. It is less clear how mitochondrial behaviors are coordinated at molecular levels. BCL2 family proteins interact within family members to regulate mitochondrial outer membrane permeabilization and apoptosis. They were also described as global regulators of mitochondrial homeostasis and mitochondrial fate through their interaction with distinct partners including Drp1, mitofusins, PGAM5, and even LC3 that involved mitochondrial dynamics and behaviors. In this review, we summarize recent findings on molecular pathways governing mitophagy and its coordination with other mitochondrial behaviors, which together determine cellular fate.
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Affiliation(s)
- Kaili Ma
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Guo Chen
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Wenhui Li
- Suzhou Institute of Systems Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Oliver Kepp
- Gustave Roussy Cancer Campus, Villejuif, France.,INSERM, UMR 1138, Centre de Recherche des Cordeliers, Sorbonne Université, Université de Paris, Paris, France
| | - Yushan Zhu
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Quan Chen
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
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30
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Maldonado JA, Firneno TJ, Roelke CE, Rains ND, Mwgiri J, Fujita MK. Transcriptome sequencing reveals signatures of positive selection in the Spot-Tailed Earless Lizard. PLoS One 2020; 15:e0234504. [PMID: 32542006 PMCID: PMC7295237 DOI: 10.1371/journal.pone.0234504] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 05/26/2020] [Indexed: 11/21/2022] Open
Abstract
The continual loss of threatened biodiversity is occurring at an accelerated pace. High-throughput sequencing technologies are now providing opportunities to address this issue by aiding in the generation of molecular data for many understudied species of high conservation interest. Our overall goal of this study was to begin building the genomic resources to continue investigations and conservation of the Spot-Tailed Earless lizard. Here we leverage the power of high-throughput sequencing to generate the liver transcriptome for the Northern Spot-Tailed Earless Lizard (Holbrookia lacerata) and Southern Spot-Tailed Earless Lizard (Holbrookia subcaudalis), which have declined in abundance in the past decades, and their sister species, the Common Lesser Earless Lizard (Holbrookia maculata). Our efforts produced high quality and robust transcriptome assemblies validated by 1) quantifying the number of processed reads represented in the transcriptome assembly and 2) quantifying the number of highly conserved single-copy orthologs that are present in our transcript set using the BUSCO pipeline. We found 1,361 1-to-1 orthologs among the three Holbrookia species, Anolis carolinensis, and Sceloporus undulatus. We carried out dN/dS selection tests using a branch-sites model and identified a dozen genes that experienced positive selection in the Holbrookia lineage with functions in development, immunity, and metabolism. Our single-copy orthologous sequences additionally revealed significant pairwise sequence divergence (~.73%) between the Northern H. lacerata and Southern H. subcaudalis that further supports the recent elevation of the Southern Spot-Tailed Earless Lizard to full species.
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Affiliation(s)
- Jose A. Maldonado
- Department of Biology, Amphibian and Reptile Diversity Research Center, The University of Texas at Arlington, Arlington, TX, United States of America
| | - Thomas J. Firneno
- Department of Biology, Amphibian and Reptile Diversity Research Center, The University of Texas at Arlington, Arlington, TX, United States of America
| | - Corey E. Roelke
- Department of Biology, Amphibian and Reptile Diversity Research Center, The University of Texas at Arlington, Arlington, TX, United States of America
| | - Nathan D. Rains
- Texas Parks and Wildlife Department, Austin, Texas, TX, United States of America
| | - Juliet Mwgiri
- Department of Biology, Amphibian and Reptile Diversity Research Center, The University of Texas at Arlington, Arlington, TX, United States of America
| | - Matthew K. Fujita
- Department of Biology, Amphibian and Reptile Diversity Research Center, The University of Texas at Arlington, Arlington, TX, United States of America
- * E-mail:
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31
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Wang L, Lu G, Shen HM. The Long and the Short of PTEN in the Regulation of Mitophagy. Front Cell Dev Biol 2020; 8:299. [PMID: 32478067 PMCID: PMC7237741 DOI: 10.3389/fcell.2020.00299] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 04/06/2020] [Indexed: 12/11/2022] Open
Abstract
Mitophagy is a key mitochondrial quality control mechanism for effective and selective elimination of damaged mitochondria through the autophagy-lysosome machinery. Defective mitophagy is associated with pathogenesis of important human diseases including neurodegenerative diseases, heart failure, innate immunity, and cancer. In the past two decades, the mechanistic studies of mitophagy have made many breakthroughs with the discoveries of phosphatase and tensin homolog (PTEN)-induced kinase protein 1 (PINK1)-parkin-mediated ubiquitin (Ub)-driven pathway and BCL2/adenovirus E1B 19 kDa protein-interacting proteins 3 (BNIP3)/NIX or FUN14 domain containing 1 (FUNDC1) mitochondrial receptor-mediated pathways. Recently, several isoforms of dual phosphatase PTEN, such as PTEN-long (PTEN-L), have been identified, and some of them are implicated in the mitophagy process via their protein phosphatase activity. In this review, we aim to discuss the regulatory roles of PTEN isoforms in mitophagy. These discoveries may provide new opportunities for development of novel therapeutic strategies for mitophagy-related diseases such as neurodegenerative disorders via targeting PTEN isoforms and mitophagy.
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Affiliation(s)
- Liming Wang
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Guang Lu
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Han-Ming Shen
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Faculty of Health Sciences, University of Macau, Macau, China
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32
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Marinković M, Šprung M, Novak I. Dimerization of mitophagy receptor BNIP3L/NIX is essential for recruitment of autophagic machinery. Autophagy 2020; 17:1232-1243. [PMID: 32286918 DOI: 10.1080/15548627.2020.1755120] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Mitophagy is a conserved intracellular catabolic process responsible for the selective removal of dysfunctional or superfluous mitochondria to maintain mitochondrial quality and need in cells. Here, we examine the mechanisms of receptor-mediated mitophagy activation, with the focus on BNIP3L/NIX mitophagy receptor, proven to be indispensable for selective removal of mitochondria during the terminal differentiation of reticulocytes. The molecular mechanisms of selecting damaged mitochondria from healthy ones are still very obscure. We investigated BNIP3L dimerization as a potentially novel molecular mechanism underlying BNIP3L-dependent mitophagy. Forming stable homodimers, BNIP3L recruits autophagosomes more robustly than its monomeric form. Amino acid substitutions of key transmembrane residues of BNIP3L, BNIP3LG204A or BNIP3LG208V, led to the abolishment of dimer formation, resulting in the lower LC3A-BNIP3L recognition and subsequently lower mitophagy induction. Moreover, we identified the serine 212 as the main amino acid residue at the C-terminal of BNIP3L, which extends to the intermembrane space, responsible for dimerization. In accordance, the phosphomimetic mutation BNIP3LS212E leads to a complete loss of BNIP3L dimerization. Thus, the interplay between BNIP3L phosphorylation and dimerization indicates that the combined mechanism of LIR phosphorylation and receptor dimerization is needed for proper BNIP3L-dependent mitophagy initiation and progression.Abbreviations: AMBRA1: autophagy and beclin 1 regulator 1; Baf A1: bafilomycin A1; BH3: BCL2 homology 3; BNIP3: BCL2 interacting protein 3; BNIP3L/NIX: BCL2 interacting protein 3 like; CCCP: carbonyl cyanide 3-chlorophenylhydrazone; CoCl2: cobalt (II) chloride; FKBP8: FKBP prolyl isomerase 8; FUNDC1: FUN14 domain containing 1; GABARAP: GABA type A receptor-associated protein; GST: glutathione S-transferase; IMM: inner mitochondrial membrane; LIR: LC3-interacting region; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; OMM: outer mitochondrial membrane; PHB2: prohibitin 2; PI: propidium iodide; PINK1: PTEN induced kinase 1; TM: transmembrane domain; TOMM20: translocase of outer mitochondrial membrane 20.
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Affiliation(s)
| | | | - Ivana Novak
- School of Medicine, University of Split, Split, Croatia
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33
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Fritsch LE, Moore ME, Sarraf SA, Pickrell AM. Ubiquitin and Receptor-Dependent Mitophagy Pathways and Their Implication in Neurodegeneration. J Mol Biol 2020; 432:2510-2524. [PMID: 31689437 PMCID: PMC7195237 DOI: 10.1016/j.jmb.2019.10.015] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/14/2019] [Accepted: 10/20/2019] [Indexed: 12/29/2022]
Abstract
Selective autophagy of mitochondria, or mitophagy, refers to the specific removal and degradation of damaged or surplus mitochondria via targeting to the lysosome for destruction. Disruptions in this homeostatic process may contribute to disease. The identification of diverse mitophagic pathways and how selectivity for each of these pathways is conferred is just beginning to be understood. The removal of both damaged and healthy mitochondria under disease and physiological conditions is controlled by either ubiquitin-dependent or receptor-dependent mechanisms. In this review, we will discuss the known types of mitophagy observed in mammals, recent findings related to PINK1/Parkin-mediated mitophagy (which is the most well-studied form of mitophagy), the implications of defective mitophagy to neurodegenerative processes, and unanswered questions inspiring future research that would enhance our understanding of mitochondrial quality control.
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Affiliation(s)
- Lauren E Fritsch
- Translational Biology, Medicine, and Health Graduate Program, Virginia Polytechnic Institute and State University, Roanoke, VA 24016, USA
| | - M Elyse Moore
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
| | - Shireen A Sarraf
- Biochemistry Section, Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Alicia M Pickrell
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
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34
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Chen QY, Shen S, Sun H, Wu F, Kluz T, Kibriya MG, Chen Y, Ahsan H, Costa M. PBMC gene expression profiles of female Bangladeshi adults chronically exposed to arsenic-contaminated drinking water. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 259:113672. [PMID: 31918125 PMCID: PMC11062206 DOI: 10.1016/j.envpol.2019.113672] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 11/06/2019] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
Arsenic, a class I human carcinogen, is ubiquitously found throughout the environment and around the globe, posing a great public health concern. Notably, Bangladesh and regions of West Bengal have been found to have high levels (0.5-4600 μg/L) of arsenic drinking water contamination, and approximately 50 million of the world's 200 million people chronically exposed to arsenic in Bangladesh alone. This study was carried out to examine genome-wide gene expression changes in individuals chronically exposed to arsenic-contaminated drinking water. Our study population includes twenty-nine Bangladeshi female participants with urinary arsenic levels ranging from 22.32 to 1828.12 μg/g creatinine. RNA extracted from peripheral blood mononuclear cells (PBMCs) were evaluated using RNA-Sequencing analysis. Our results indicate that a total of 1,054 genes were significantly associated with increasing urinary arsenic levels (FDR p < 0.05), which include 418 down-regulated and 636 up-regulated genes. Further Ingenuity Pathway Analysis revealed potential target genes (DAPK1, EGR2, APP), microRNAs (miR-155, -338, -210) and pathways (NOTCH signaling pathway) related to arsenic carcinogenesis. The selection of female-only participants provides a homogenous study population since arsenic has significant sex dependent effects, and the wide exposure range provides new insight for key gene expression changes that correlate with increasing urinary arsenic levels.
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Affiliation(s)
- Qiao Yi Chen
- Department of Environmental Medicine, New York University School of Medicine, 10010, New York, NY, USA.
| | - Steven Shen
- Institute of Health Informatics, University of Minnesota, 55455, Minneapolis, MN, USA
| | - Hong Sun
- Department of Environmental Medicine, New York University School of Medicine, 10010, New York, NY, USA
| | - Fen Wu
- Department of Population Health and Environmental Medicine, 10016, New York University School of Medicine, New York, NY, USA
| | - Thomas Kluz
- Department of Environmental Medicine, New York University School of Medicine, 10010, New York, NY, USA
| | - Muhammad G Kibriya
- Institute for Population and Precision Health, Department of Public Health Sciences, The University of Chicago, Chicago, IL, 60637, USA
| | - Yu Chen
- Department of Population Health and Environmental Medicine, 10016, New York University School of Medicine, New York, NY, USA
| | - Habibul Ahsan
- Institute for Population and Precision Health, Department of Public Health Sciences, The University of Chicago, Chicago, IL, 60637, USA
| | - Max Costa
- Department of Environmental Medicine, New York University School of Medicine, 10010, New York, NY, USA.
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35
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Krawczyk A, Strzałka-Mrozik B, Wcisło-Dziadecka D, Grabarek B, Kimsa-Dudek M, Gola J. Adalimumab changes the expression profile of selected BCL-2 family genes. Dermatol Ther 2020; 33:e13277. [PMID: 32068934 DOI: 10.1111/dth.13277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/11/2020] [Accepted: 02/11/2020] [Indexed: 11/28/2022]
Abstract
Biological drugs are an alternative to treatment of psoriasis and psoriatic arthritis. Adalimumab is a representative of the anti-TNF group. The underlying of this disease is a cellular homeostasis disorder-apoptosis. Many proteins are involved in the apoptosis induction pathways, including those from the BCL-2 family. The aim of the study was to perform a transcriptional analysis of the genes coding selected proteins from the BCL-2 family in patients treated with adalimumab therapy, and to determine the direction of these changes. The test materials were peripheral blood mononuclear cells. The cells were obtained from 20 patients with psoriatic arthritis who were being treated with adalimumab (study group) and 20 healthy volunteers (control). The gene expression profile was determined using the real-time quantitative reverse transcription polymerase chain reaction technique. Statistically significant changes were observed in the expression level of the BNIP3, BNIP3L, and BCL2L1 genes (p < .05) during a 24-month observation of therapy. We indicated that adalimumab therapy has an impact on the expression of the analyzed genes, which may constitute a new class of molecular markers for assessing the effectiveness of a therapy. It appears that the BNIP3L gene could be used as a potential diagnostic marker of psoriasis.
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Affiliation(s)
- Agata Krawczyk
- Department of Nutrigenomics and Bromatology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Sosnowiec, Poland
| | - Barbara Strzałka-Mrozik
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Sosnowiec, Poland
| | - Dominika Wcisło-Dziadecka
- Department of Cosmetology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Sosnowiec, Poland.,Department of Dermatology, Andrzej Mielecki Memorial Independent Public Clinical Hospital, Katowice, Poland
| | - Beniamin Grabarek
- Department of Clinical Trials, Maria Sklodowska-Curie National Research Institute of Oncology Krakow Branch, Poland.,Department of Histology, Cytophysiology and Embryology, Faculty of Medicine in Zabrze, University of Technology in Katowice, Zabrze, Poland
| | - Magdalena Kimsa-Dudek
- Department of Nutrigenomics and Bromatology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Sosnowiec, Poland
| | - Joanna Gola
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Sosnowiec, Poland
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36
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Budzik JM, Swaney DL, Jimenez-Morales D, Johnson JR, Garelis NE, Repasy T, Roberts AW, Popov LM, Parry TJ, Pratt D, Ideker T, Krogan NJ, Cox JS. Dynamic post-translational modification profiling of Mycobacterium tuberculosis-infected primary macrophages. eLife 2020; 9:51461. [PMID: 31951200 PMCID: PMC7030789 DOI: 10.7554/elife.51461] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 01/16/2020] [Indexed: 12/23/2022] Open
Abstract
Macrophages are highly plastic cells with critical roles in immunity, cancer, and tissue homeostasis, but how these distinct cellular fates are triggered by environmental cues is poorly understood. To uncover how primary murine macrophages respond to bacterial pathogens, we globally assessed changes in post-translational modifications of proteins during infection with Mycobacterium tuberculosis, a notorious intracellular pathogen. We identified hundreds of dynamically regulated phosphorylation and ubiquitylation sites, indicating that dramatic remodeling of multiple host pathways, both expected and unexpected, occurred during infection. Most of these cellular changes were not captured by mRNA profiling, and included activation of ubiquitin-mediated autophagy, an evolutionarily ancient cellular antimicrobial system. This analysis also revealed that a particular autophagy receptor, TAX1BP1, mediates clearance of ubiquitylated Mtb and targets bacteria to LC3-positive phagophores. These studies provide a new resource for understanding how macrophages shape their proteome to meet the challenge of infection.
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Affiliation(s)
- Jonathan M Budzik
- Department of Medicine, University of California, San Francisco, San Francisco, United States.,Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, United States
| | - Danielle L Swaney
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, United States.,Quantitative Biosciences Institute, University of California, San Francisco, San Francisco, United States.,Gladstone Institutes, San Francisco, United States
| | - David Jimenez-Morales
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, United States.,Quantitative Biosciences Institute, University of California, San Francisco, San Francisco, United States.,Gladstone Institutes, San Francisco, United States.,Department of Medicine, Division of Cardiovascular Medicine, Stanford University, Stanford, United States
| | - Jeffrey R Johnson
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, United States.,Quantitative Biosciences Institute, University of California, San Francisco, San Francisco, United States.,Gladstone Institutes, San Francisco, United States
| | - Nicholas E Garelis
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, United States
| | - Teresa Repasy
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, United States
| | - Allison W Roberts
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, United States
| | - Lauren M Popov
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, United States
| | - Trevor J Parry
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, United States
| | - Dexter Pratt
- Department of Medicine, University of California, San Diego, La Jolla, United States
| | - Trey Ideker
- Department of Medicine, University of California, San Diego, La Jolla, United States
| | - Nevan J Krogan
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, United States.,Quantitative Biosciences Institute, University of California, San Francisco, San Francisco, United States.,Gladstone Institutes, San Francisco, United States
| | - Jeffery S Cox
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, United States
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37
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Li X, Sdiri M, Peng J, Xie Y, Yang BB. Identification and characterization of chemical components in the bioactive fractions of Cynomorium coccineum that possess anticancer activity. Int J Biol Sci 2020; 16:61-73. [PMID: 31892846 PMCID: PMC6930376 DOI: 10.7150/ijbs.38475] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 09/18/2019] [Indexed: 01/21/2023] Open
Abstract
Cynomorium coccineum has long been used as the health and medicinal plant known to induce cancer cell death. However, the bioactive compounds of C. coccineum and the underlying mechanism of their regulator in cell autophagy and cell apoptosis remain unexplored. In our previous study, we found that the ethanol extract had antitumor activity through inducing cancer cell death. In this study, by detecting the anti-tumor effect of sequence extracts from Cynomorium coccineum, the active constituents were collected in solvent ethyl acetate. A strategy based on ultra-performance liquid chromatography coupled with hybrid quadrupole-orbitrap mass spectrometry (UPLC-Q-Orbitrap/MS) was first utilized to analyze the chemical constituents of active fraction (ethyl acetate fraction, CS3). A total of 29 compounds including 8 triterpenoids, 6 flavonoids, 4 fatty acids, 8 phenolic acids, 1 anthraquinones, 1 nucleoside and 1 sterol were detected and identified or tentatively identified for the first time in Cynomorium coccineum. We found that CS3 induces cancer cell death accompanied with a great number of vacuoles in the cytoplasm. CS3-induced autophagosome formation was found and confirmed by electron microscopy and the high expression levels of microtubule-associated protein-1 light chain 3-II (LC3II), a marker protein of autophagy. We additionally demonstrated that CS3 activated and increased the pro-apoptotic mitochondrial proteins, BNIP3 and BNIP3L, in mRNA and protein levels. The constituents of CS3 down-regulated anti-apoptotic BCL2, and then releases autophagic protein Beclin-1. These finding for the first time systematically not only explore and identify the active constituents of CS3 in Cynomorium coccineum, but also examined the mechanism associated with CS3-induced cell death via cell autophagy. This active component may serve as a potential source to obtain new autophagy inducer and anti-cancer compounds for hepatocellular carcinoma.
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Affiliation(s)
- Xiangmin Li
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
- Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, M4N3M5, Canada
| | - Mouna Sdiri
- Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, M4N3M5, Canada
| | - Juanjuan Peng
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Yizhen Xie
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
- Yuewei Edible Fungi Technology Co. Ltd., Guangzhou 510070, China
| | - Burton B Yang
- Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, M4N3M5, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, M4N3M5, Canada
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38
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Chua KV, Fan CS, Chen CC, Chen LL, Hsieh SC, Huang TS. Octyl Gallate Induces Pancreatic Ductal Adenocarcinoma Cell Apoptosis and Suppresses Endothelial-Mesenchymal Transition-Promoted M2-Macrophages, HSP90α Secretion, and Tumor Growth. Cells 2019; 9:E91. [PMID: 31905895 PMCID: PMC7016987 DOI: 10.3390/cells9010091] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/24/2019] [Accepted: 12/26/2019] [Indexed: 01/05/2023] Open
Abstract
Octyl gallate (OG) is a common antioxidant and preservative safely used in food additive and cosmetics. In this study, OG exhibited an activity to induce apoptosis in pancreatic ductal adenocarcinoma (PDAC) cells. It induced BNIP3L level and facilitated physical associations of BNIP3L with Bcl-2 as well as Bcl-XL to set the mitochondrial Bax/Bak channels free for cytochrome c release. In addition, in vivo evaluation also showed that daily oral administration of OG was efficacious to prevent the tumor growth of PDAC cell grafts. Considering PDAC is a desmoplastic tumor consisting of many cancer-associated fibroblasts (CAFs), we further evaluated the efficacy of OG in a CAFs-involved PDAC mouse model. Endothelial-to-mesenchymal transition (EndoMT) is an important source of CAFs. The mix of EndoMT-derived CAFs with PDAC cell grafts significantly recruited myeloid-derived macrophages but prevented immune T cells. HSP90α secreted by EndoMT-derived CAFs further induced macrophage M2-polarization and more HSP90α secretion to expedite PDAC tumor growth. OG exhibited its potent efficacy against the tumor growth, M2-macrophages, and serum HSP90α level in the EndoMT-involved PDAC mouse model. CD91 and TLR4 are cell-surface receptors for extracellular HSP90α (eHSP90α). OG blocked eHSP90α-TLR4 ligation and, thus, prevented eHSP90α-induced M2-macrophages and more HSP90α secretion from macrophages and PDAC cells.
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Affiliation(s)
- Kee Voon Chua
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350, Taiwan; (K.V.C.); (C.-S.F.); (C.-C.C.); (L.-L.C.)
| | - Chi-Shuan Fan
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350, Taiwan; (K.V.C.); (C.-S.F.); (C.-C.C.); (L.-L.C.)
| | - Chia-Chi Chen
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350, Taiwan; (K.V.C.); (C.-S.F.); (C.-C.C.); (L.-L.C.)
| | - Li-Li Chen
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350, Taiwan; (K.V.C.); (C.-S.F.); (C.-C.C.); (L.-L.C.)
| | - Shu-Chen Hsieh
- Graduate Institute of Food Science and Technology, College of Bioresources and Agriculture, National Taiwan University, Taipei 106, Taiwan;
| | - Tze-Sing Huang
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350, Taiwan; (K.V.C.); (C.-S.F.); (C.-C.C.); (L.-L.C.)
- Department of Biochemistry, School of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Ph.D. Program in Tissue Engineering and Regenerative Medicine, Biotechnology Center, National Chung Hsing University, Taichung 402, Taiwan
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39
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Nechiporuk T, Kurtz SE, Nikolova O, Liu T, Jones CL, D'Alessandro A, Culp-Hill R, d'Almeida A, Joshi SK, Rosenberg M, Tognon CE, Danilov AV, Druker BJ, Chang BH, McWeeney SK, Tyner JW. The TP53 Apoptotic Network Is a Primary Mediator of Resistance to BCL2 Inhibition in AML Cells. Cancer Discov 2019; 9:910-925. [PMID: 31048320 DOI: 10.1158/2159-8290.cd-19-0125] [Citation(s) in RCA: 199] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/20/2019] [Accepted: 04/30/2019] [Indexed: 12/26/2022]
Abstract
To study mechanisms underlying resistance to the BCL2 inhibitor venetoclax in acute myeloid leukemia (AML), we used a genome-wide CRISPR/Cas9 screen to identify gene knockouts resulting in drug resistance. We validated TP53, BAX, and PMAIP1 as genes whose inactivation results in venetoclax resistance in AML cell lines. Resistance to venetoclax resulted from an inability to execute apoptosis driven by BAX loss, decreased expression of BCL2, and/or reliance on alternative BCL2 family members such as BCL2L1. The resistance was accompanied by changes in mitochondrial homeostasis and cellular metabolism. Evaluation of TP53 knockout cells for sensitivities to a panel of small-molecule inhibitors revealed a gain of sensitivity to TRK inhibitors. We relate these observations to patient drug responses and gene expression in the Beat AML dataset. Our results implicate TP53, the apoptotic network, and mitochondrial functionality as drivers of venetoclax response in AML and suggest strategies to overcome resistance. SIGNIFICANCE: AML is challenging to treat due to its heterogeneity, and single-agent therapies have universally failed, prompting a need for innovative drug combinations. We used a genetic approach to identify genes whose inactivation contributes to drug resistance as a means of forming preferred drug combinations to improve AML treatment.See related commentary by Savona and Rathmell, p. 831.This article is highlighted in the In This Issue feature, p. 813.
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Affiliation(s)
- Tamilla Nechiporuk
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon.,Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon
| | - Stephen E Kurtz
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon.,Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon
| | - Olga Nikolova
- Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon.,Department of Biomedical Engineering, Oregon Health and Science University, Portland, Oregon
| | - Tingting Liu
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon.,Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon
| | - Courtney L Jones
- Division of Hematology, University of Colorado Denver, Aurora, Colorado
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, Colorado
| | - Rachel Culp-Hill
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, Colorado
| | - Amanda d'Almeida
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon.,Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon
| | - Sunil K Joshi
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon.,Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon
| | - Mara Rosenberg
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon.,Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon
| | - Cristina E Tognon
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon.,Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon.,Howard Hughes Medical Institute, Oregon Health and Science University, Portland, Oregon
| | - Alexey V Danilov
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon.,Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon
| | - Brian J Druker
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon.,Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon.,Howard Hughes Medical Institute, Oregon Health and Science University, Portland, Oregon
| | - Bill H Chang
- Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon.,Department of Pediatrics, Oregon Health and Science University, Portland, Oregon
| | - Shannon K McWeeney
- Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon.,Division of Bioinformatics and Computational Biology, Department of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, Oregon
| | - Jeffrey W Tyner
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon. .,Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon.,Department of Cell, Developmental and Cancer Biology, Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon
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40
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Ma J, Ni H, Rui Q, Liu H, Jiang F, Gao R, Gao Y, Li D, Chen G. Potential Roles of NIX/BNIP3L Pathway in Rat Traumatic Brain Injury. Cell Transplant 2019; 28:585-595. [PMID: 30961359 PMCID: PMC7103607 DOI: 10.1177/0963689719840353] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
NIX/BNIP3L is known as a proapoptotic protein that is also related to mitophagy. Previous
reports have shown that NIX could be involved in neuronal apoptosis after intracerebral
hemorrhage, but it also plays a protective role in mitophagy in ischemic brain injury. How
NIX works in traumatic brain injury (TBI) is unclear. Thus, this study was designed to
observe the expression of NIX and perform a preliminary exploration of the possible
effects of NIX in a rat TBI model. The results showed that NIX expression decreased after
damage, and colocalized with neuronal cells in cortical areas. Moreover, when we induced
upregulation of NIX, autophagy was increased, while neuronal apoptosis and brain water
content decreased along with neurological deficits. These findings remind us that NIX
probably plays a neuroprotective role in TBI through autophagy and apoptosis pathways.
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Affiliation(s)
- Jialing Ma
- 1 Department of Anesthesia, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Haibo Ni
- 2 Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Qin Rui
- 3 Department of Laboratory, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Huixiang Liu
- 2 Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Feng Jiang
- 2 Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Rong Gao
- 2 Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Yanping Gao
- 1 Department of Anesthesia, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Di Li
- 4 Department of Neurosurgery and Translational Medicine Center, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Gang Chen
- 5 Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, SuZhou, China
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Peng Y, Fang Z, Liu M, Wang Z, Li L, Ming S, Lu C, Dong H, Zhang W, Wang Q, Shen R, Xie F, Zhang W, Yang C, Gao X, Sun Y. Testosterone induces renal tubular epithelial cell death through the HIF-1α/BNIP3 pathway. J Transl Med 2019; 17:62. [PMID: 30819186 PMCID: PMC6394048 DOI: 10.1186/s12967-019-1821-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 02/22/2019] [Indexed: 11/12/2022] Open
Abstract
Background The morbidity of nephrolithiasis is 2–3 times higher in males than in females, suggesting that androgen plays a key role in nephrolithiasis. The death of renal tubular epithelial cells (TECs) is an important pathophysiological process contributing to the development of nephrolithiasis. Therefore, the aim of this study is to investigate whether androgen directly induces TECs apoptosis and necrosis and its underlying mechanisms in kidney stone formation. Materials and methods We compared serum testosterone level between male and female healthy volunteers and kidney stone patients. The in vivo nephrolithiasis model was established using glyoxylic acid, and calcium deposits were detected by van Kossa staining. In the in vitro study using mouse TECs (TCMK-1 cells) and human TECs (HK-2 cells), apoptosis, necrosis, and the expression of BH3-only protein Bcl-2-like 19 kDa-interacting protein 3 (BNIP3) were examined incubated with different doses of testosterone using flow cytometry. Levels of apoptosis-related proteins transfected with the BNIP3 siRNA were examined by western blotting. The mitochondrial potential (ΔΨm) was detected by JC-1 staining and flow cytometry. We monitored BNIP3 expression in the testosterone-induced TECs injury model after treatment with hypoxia inducible factor 1α (HIF-1α) and/or hypoxia inducible factor 2α (HIF-2α) inhibitors to determine the upstream protein regulating BNIP3 expression. Additionally, ChIP and luciferase assays were performed to confirm the interaction between HIF-1α and BNIP3. Results Both male and female patients have significantly higher testosterones compared with healthy volunteers. More calcium deposits in the medulla were detected in male mice compared to female and castrated male mice. Testosterone induced TECs apoptosis and necrosis and increased BNIP3 expression in a dose-dependent manner. Testosterone also increased Bax expression, decreased Bcl-2 expression and induced a loss of ΔΨm. This effect was reversed by BNIP3 knockdown. HIF-1α inhibition significantly decreased BNIP3 expression and protected TECs from testosterone-induced apoptosis and necrosis. HIF-2α inhibition, however, did not influence BNIP3 expression or TECs apoptosis or necrosis. Finally, HIF-1α interacted with the BNIP3 promoter region. Conclusion Based on these results, testosterone induced renal TECs death by activating the HIF-1α/BNIP3 pathway. Electronic supplementary material The online version of this article (10.1186/s12967-019-1821-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yonghan Peng
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Ziyu Fang
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Min Liu
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Zeyu Wang
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Ling Li
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Shaoxiong Ming
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Chaoyue Lu
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Hao Dong
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Wenhui Zhang
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Qi Wang
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Rong Shen
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Fei Xie
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China
| | - Weitao Zhang
- Department of Urology, Zhongshan Hospital, Fudan University; Shanghai Key Laboratory of Organ Transplantation, 180 Fenglin Road, Shanghai, 200032, China
| | - Cheng Yang
- Department of Urology, Zhongshan Hospital, Fudan University; Shanghai Key Laboratory of Organ Transplantation, 180 Fenglin Road, Shanghai, 200032, China. .,Zhangjiang Institute of Fudan University, Shanghai, 201203, China.
| | - Xiaofeng Gao
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China.
| | - Yinghao Sun
- Department of Urology, Shanghai Changhai Hospital, Shanghai, 200433, China.
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Lal G, Rajala MS. Combination of Oncolytic Measles Virus Armed With BNiP3, a Pro-apoptotic Gene and Paclitaxel Induces Breast Cancer Cell Death. Front Oncol 2019; 8:676. [PMID: 30697531 PMCID: PMC6340943 DOI: 10.3389/fonc.2018.00676] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 12/21/2018] [Indexed: 12/31/2022] Open
Abstract
Breast cancer is one of the major causes of cancer related mortality in women worldwide. Limitations of conventional anti-cancer therapies such as severe systemic side effects, narrow therapeutic index, non-specificity, and non-availability of drugs for all types of cancers has resulted in the development of various novel and targeted approaches. The use of viruses as oncolytic agents has gained momentum for the development of an efficient therapeutic platform. In this study, we have developed recombinant measles virus armed with BNiP3, a pro-apoptotic gene of human origin, as an oncolytic agent, and have demonstrated its ability to induce apoptosis in breast cancer cells in vitro. Studies have demonstrated the potential of using oncolytic viruses in combination with conventional therapies as an efficient anti-cancer regimen. We also have explored the synergistic potential of this virus in combination with paclitaxel, and a hydrazone derivative, H2 compound as an anti-cancer agent. MCF-7 and MDA-MB-231, human breast cancer cell lines were used for in vitro studies to evaluate toxic effects of armed virus, rMV-BNiP3 both as a standalone therapy and in combination with paclitaxel or H2 compound, a hydrazone derivative. Generation of armed virus was confirmed by detecting the viral transcript and protein expression, while its oncolytic potential by cell viability assays. Induction of apoptosis was demonstrated by fluorescence based caspase 3 activity and flow cytometry based Annexin V/PI staining. In the current study we have demonstrated the successful generation of an oncolytic measles virus armed with BNiP3 (rMV-BNiP3) and the induction of toxic effects in rMV-BNiP3 infected cells with a curious bias toward MDA-MB-231 cells as compared to MCF-7. Infection of breast cancer cells with rMV-BNiP3 caused induction of cell death, but the combination of rMV-BNiP3 with sub-lethal doses of both paclitaxel and H2 lowered the overall viability of cancer cells. As triple negative breast tumors are highly aggressive and resistant subtype of breast cancer with poor prognosis, comparative sensitivity of MDA-MB-231 cells toward this virus may potentially be used to develop a targeted therapy against triple negative breast cancer.
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Affiliation(s)
- Geetanjali Lal
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Maitreyi S Rajala
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
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43
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Fan P, Xie XH, Chen CH, Peng X, Zhang P, Yang C, Wang YT. Molecular Regulation Mechanisms and Interactions Between Reactive Oxygen Species and Mitophagy. DNA Cell Biol 2018; 38:10-22. [PMID: 30556744 DOI: 10.1089/dna.2018.4348] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The generation of reactive oxygen species (ROS) in response to oxidative stress has important effects on cell development, normal function, and survival. It may cause oxidative damage to intracellular macromolecular substances and mitochondria through several signaling pathways. However, the damaged mitochondria promote further ROS generation, creating a vicious cycle that can cause cellular injury. In addition, excessive ROS produced by damaged mitochondria can trigger mitophagy, a process that can scavenge impaired mitochondria and reduce ROS level to maintain stable mitochondrial function in cells. Therefore, mitophagy heaps maintain cellular homeostasis under oxidative stress. In this article, we review recent advances in cellular damage caused by excessive ROS, the mechanism of mitophagy, and the close relationship between ROS and mitophagy. This review provides a new perspective on therapeutic strategies for related diseases.
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Affiliation(s)
- Pan Fan
- 1 Department of Spine Center, Zhongda Hospital, Medical School, Southeast University , Nanjing, Jiangsu, China
| | - Xing-Hui Xie
- 1 Department of Spine Center, Zhongda Hospital, Medical School, Southeast University , Nanjing, Jiangsu, China
| | - Chang-Hong Chen
- 2 Department of Orthopaedic Surgery, Jiangyin Hospital of Traditional Chinese Medicine , Wuxi, Jiangsu, China
| | - Xin Peng
- 1 Department of Spine Center, Zhongda Hospital, Medical School, Southeast University , Nanjing, Jiangsu, China
| | - Po Zhang
- 1 Department of Spine Center, Zhongda Hospital, Medical School, Southeast University , Nanjing, Jiangsu, China
| | - Cheng Yang
- 1 Department of Spine Center, Zhongda Hospital, Medical School, Southeast University , Nanjing, Jiangsu, China
| | - Yun-Tao Wang
- 1 Department of Spine Center, Zhongda Hospital, Medical School, Southeast University , Nanjing, Jiangsu, China
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Leermakers PA, Schols AMWJ, Kneppers AEM, Kelders MCJM, de Theije CC, Lainscak M, Gosker HR. Molecular signalling towards mitochondrial breakdown is enhanced in skeletal muscle of patients with chronic obstructive pulmonary disease (COPD). Sci Rep 2018; 8:15007. [PMID: 30302028 PMCID: PMC6177478 DOI: 10.1038/s41598-018-33471-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 09/27/2018] [Indexed: 11/09/2022] Open
Abstract
Loss of skeletal muscle mitochondrial oxidative capacity is well-established in patients with COPD, but the role of mitochondrial breakdown herein is largely unexplored. Currently, we studied if mitochondrial breakdown signalling is increased in skeletal muscle of COPD patients and associates with the loss of mitochondrial content, and whether it is affected in patients with iron deficiency (ID) or systemic inflammation. Therefore, mitophagy, autophagy, mitochondrial dynamics and content markers were analysed in vastus lateralis biopsies of COPD patients (N = 95, FEV1% predicted: 39.0 [31.0–53.6]) and healthy controls (N = 15, FEV1% predicted: 112.8 [107.5–125.5]). Sub-analyses were performed on patients stratified by ID or C-reactive protein (CRP). Compared with controls, COPD patients had lower muscle mitochondrial content, higher BNIP3L and lower FUNDC1 protein, and higher Parkin protein and gene-expression. BNIP3L and Parkin protein levels inversely correlated with mtDNA/gDNA ratio and FEV1% predicted. ID-COPD patients had lower BNIP3L protein and higher BNIP3 gene-expression, while high CRP patients had higher BNIP3 and autophagy-related protein levels. In conclusion, our data indicates that mitochondrial breakdown signalling is increased in skeletal muscle of COPD patients, and is related to disease severity and loss of mitochondrial content. Moreover, systemic inflammation is associated with higher BNIP3 and autophagy-related protein levels.
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Affiliation(s)
- P A Leermakers
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands.
| | - A M W J Schols
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - A E M Kneppers
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - M C J M Kelders
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - C C de Theije
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - M Lainscak
- Department of Cardiology, General Hospital Murska Sobota, Murska Sobota, Slovenia.,Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - H R Gosker
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands
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45
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Wang Z, Han Y, Zhang Z, Jia C, Zhao Q, Song W, Chen T, Zhang Y, Wang X. Identification of genes and signaling pathways associated with the pathogenesis of juvenile spondyloarthritis. Mol Med Rep 2018; 18:1263-1270. [PMID: 29901120 PMCID: PMC6072139 DOI: 10.3892/mmr.2018.9136] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 02/20/2018] [Indexed: 01/31/2023] Open
Abstract
The aim of the present study was to identify key genes and signaling pathways associated with the pathogenesis of juvenile spondyloarthritis (JSA). The gene expression profile dataset GSE58667, including data from 15 human whole blood samples collected from 11 patients with JSA and four healthy controls, was analyzed to identify differentially expressed genes (DEGs) associated with disease characteristics. Additionally, Gene Ontology term and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses of the DEGs were performed. Protein‑protein, microRNA‑transcription factor and chemical‑gene interaction networks were constructed. A total of 326 DEGs, 196 upregulated and 130 downregulated, were identified. DEGs, including C‑X‑C motif chemokine ligand 5 (CXCL5), BCL2 interacting protein 3 like (BNIP3L), dual specificity phosphatase 5 (DUSP5) and tumor protein p53 (TP53) were enriched in functions associated with apoptosis, the cell cycle and immune responses. KEGG pathway enrichment analysis revealed that pathways associated with inflammation and the mitogen‑activated protein kinase 1 (MAPK) signaling pathway were the most enriched by DEGs. The results of the present study indicated that the MAPK signaling pathway and four genes, including CXCL5, BNIP3L, DUSP5 and TP53, may be implicated in the pathogenesis of JSA.
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Affiliation(s)
- Zhe Wang
- Department of Orthopedics, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
- Department of Orthopedic Trauma, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Yudi Han
- Department of Plastic and Reconstructive Surgery, General Hospital of Chinese People's Liberation Army, Beijing 100853, P.R. China
| | - Zhaoqing Zhang
- Department of Spine Surgery, Zhangqiu People's Hospital, Jinan, Shandong 250200, P.R. China
| | - Cunfeng Jia
- Department of Spine Surgery, Zhangqiu People's Hospital, Jinan, Shandong 250200, P.R. China
| | - Qiang Zhao
- Department of Spine Surgery, Zhangqiu People's Hospital, Jinan, Shandong 250200, P.R. China
| | - Wei Song
- School of Life Sciences, Shanghai University, Shanghai 200444, P.R. China
| | - Tao Chen
- Department of Orthopedics, Fourth Hospital of Changsha, Changsha, Hunan 410006, P.R. China
| | - Yifan Zhang
- Department of Rheumatism Immunity, People's Liberation Army General Hospital, Beijing 100700, P.R. China
| | - Xiuhui Wang
- Department of Orthopedics, Shanghai Zhoupu Hospital, Shanghai 201318, P.R. China
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46
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Meyer N, Zielke S, Michaelis JB, Linder B, Warnsmann V, Rakel S, Osiewacz HD, Fulda S, Mittelbronn M, Münch C, Behrends C, Kögel D. AT 101 induces early mitochondrial dysfunction and HMOX1 (heme oxygenase 1) to trigger mitophagic cell death in glioma cells. Autophagy 2018; 14:1693-1709. [PMID: 29938581 DOI: 10.1080/15548627.2018.1476812] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
In most cases, macroautophagy/autophagy serves to alleviate cellular stress and acts in a pro-survival manner. However, the effects of autophagy are highly contextual, and autophagic cell death (ACD) is emerging as an alternative paradigm of (stress- and drug-induced) cell demise. AT 101 ([-]-gossypol), a natural compound from cotton seeds, induces ACD in glioma cells as confirmed here by CRISPR/Cas9 knockout of ATG5 that partially, but significantly rescued cell survival following AT 101 treatment. Global proteomic analysis of AT 101-treated U87MG and U343 glioma cells revealed a robust decrease in mitochondrial protein clusters, whereas HMOX1 (heme oxygenase 1) was strongly upregulated. AT 101 rapidly triggered mitochondrial membrane depolarization, engulfment of mitochondria within autophagosomes and a significant reduction of mitochondrial mass and proteins that did not depend on the presence of BAX and BAK1. Conversely, AT 101-induced reduction of mitochondrial mass could be reversed by inhibiting autophagy with wortmannin, bafilomycin A1 and chloroquine. Silencing of HMOX1 and the mitophagy receptors BNIP3 (BCL2 interacting protein 3) and BNIP3L (BCL2 interacting protein 3 like) significantly attenuated AT 101-dependent mitophagy and cell death. Collectively, these data suggest that early mitochondrial dysfunction and HMOX1 overactivation synergize to trigger lethal mitophagy, which contributes to the cell killing effects of AT 101 in glioma cells. ABBREVIATIONS ACD, autophagic cell death; ACN, acetonitrile; AT 101, (-)-gossypol; BAF, bafilomycin A1; BAK1, BCL2-antagonist/killer 1; BAX, BCL2-associated X protein; BH3, BCL2 homology region 3; BNIP3, BCL2 interacting protein 3; BNIP3L, BCL2 interacting protein 3 like; BP, Biological Process; CCCP, carbonyl cyanide m-chlorophenyl hydrazone; CC, Cellular Component; Con, control; CQ, chloroquine; CRISPR, clustered regularly interspaced short palindromic repeats; DMEM, Dulbecco's Modified Eagle Medium; DTT, 1,4-dithiothreitol; EM, electron microscopy; ER, endoplasmatic reticulum; FACS, fluorescence-activated cell sorting; FBS, fetal bovine serum; FCCP, carbonyl cyanide 4-(trifluoromethoxy)phenylhydrazone; GO, Gene Ontology; HAcO, acetic acid; HMOX1, heme oxygenase 1; DKO, double knockout; LC-MS/MS, liquid chromatography coupled to tandem mass spectrometry; LPL, lipoprotein lipase, MEFs, mouse embryonic fibroblasts; mPTP, mitochondrial permeability transition pore; MTG, MitoTracker Green FM; mt-mKeima, mito-mKeima; MT-ND1, mitochondrially encoded NADH:ubiquinone oxidoreductase core subunit 1; PBS, phosphate-buffered saline; PE, phosphatidylethanolamine; PI, propidium iodide; PRKN, parkin RBR E3 ubiquitin protein ligase; SDS, sodium dodecyl sulfate; SQSTM1/p62, sequestome 1; STS, staurosporine; sgRNA, single guide RNA; SILAC, stable isotope labeling with amino acids in cell culture; TFA, trifluoroacetic acid, TMRM, tetramethylrhodamine methyl ester perchlorate; WM, wortmannin; WT, wild-type.
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Affiliation(s)
- Nina Meyer
- a Experimental Neurosurgery , Goethe University Hospital Frankfurt/Main , Germany
| | - Svenja Zielke
- b Experimental Cancer Research in Pediatrics , Goethe University Hospital Frankfurt/Main , Germany
| | - Jonas B Michaelis
- c Institute of Biochemistry II , Goethe University Hospital Frankfurt/Main , Germany
| | - Benedikt Linder
- a Experimental Neurosurgery , Goethe University Hospital Frankfurt/Main , Germany
| | - Verena Warnsmann
- d Institute of Molecular Biosciences , Goethe University Frankfurt/Main , Germany
| | - Stefanie Rakel
- a Experimental Neurosurgery , Goethe University Hospital Frankfurt/Main , Germany
| | - Heinz D Osiewacz
- d Institute of Molecular Biosciences , Goethe University Frankfurt/Main , Germany
| | - Simone Fulda
- b Experimental Cancer Research in Pediatrics , Goethe University Hospital Frankfurt/Main , Germany.,e University Cancer Center Frankfurt (UCT) , Frankfurt/Main , Germany.,f German Cancer Consortium (DKTK) , Partner Site Frankfurt, Frankfurt/Main , Germany
| | - Michel Mittelbronn
- f German Cancer Consortium (DKTK) , Partner Site Frankfurt, Frankfurt/Main , Germany.,g Institute of Neurology (Edinger Institute) , Goethe University Frankfurt/Main , Germany.,h Luxembourg Centre of Neuropathology (LCNP) , Luxembourg , Luxembourg.,i Laboratoire National de Santé (LNS) , Dudelange , Luxembourg.,j Luxembourg Centre for Systems Biomedicine (LCSB) , University of Luxembourg , Luxembourg , Luxembourg.,k Department of Oncology, Luxembourg Institute of Health (LIH) , NORLUX Neuro-Oncology Laboratory , Luxembourg , Luxembourg.,l Luxembourg Centre of Neuropathology (LCNP) , Dudelange , Luxembourg
| | - Christian Münch
- c Institute of Biochemistry II , Goethe University Hospital Frankfurt/Main , Germany
| | - Christian Behrends
- c Institute of Biochemistry II , Goethe University Hospital Frankfurt/Main , Germany.,m Munich Cluster for Systems Neurology (SyNergy), Medical Faculty , Ludwig-Maximilians-University (LMU) Munich , Munich , Germany
| | - Donat Kögel
- a Experimental Neurosurgery , Goethe University Hospital Frankfurt/Main , Germany.,e University Cancer Center Frankfurt (UCT) , Frankfurt/Main , Germany
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Jiang Z, Yu F, Li M. Upregulation of BCL2 19 kD Protein-Interacting Protein 3 (BNIP3) is Predictive of Unfavorable Prognosis in Uveal Melanoma. Med Sci Monit 2018; 24:4711-4717. [PMID: 29982263 PMCID: PMC6070000 DOI: 10.12659/msm.907679] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Background BCL2 19 kD protein-interacting protein 3 (BNIP3) is a BH3-containing protein of the BCL-2 family; it can regulate cell death, autophagy, and cytoprotection. The upregulation of BNIP3 has been reported to relate to progression and poor prognosis in different cancer types. However, the clinical significance of BNIP3 in uveal melanoma (UM) is still unknown. Material/Methods In our study, 47 patients with UM were enrolled; the expression of BNIP3 was detected with immunohistochemistry. According to BNIP3 immunohistochemical scores, the patients were divided into BNIP3 high- and low-expression subgroups. The correlation between the expression of BNIP3 and clinicopathological factors was evaluated with Fisher’s test; the associations with survival rates were analyzed with log-rank test. The independent prognostic factors were identified with the Cox-regression model. Results BNIP3 was mainly localized in the cytoplasm, and high expression of BNIP3 accounted for 31.9% (15/47) of the patients in our study. High expression of BNIP3 was demonstrated to be significantly associated with more pigment (P=0.018) and deeper scleral invasion (P=0.013). High expression of BNIP3 was also correlated with lower overall survival rate (P=0.006). Multivariate analysis confirmed positive ciliary body involvement and lymphatic infiltration as independent prognostic factors. Conclusions High expression of BNIP3 was significantly associated with poor prognosis of patients with UM, indicating that BNIP3 detection could help stratify high-risk patients and identify new therapies targeting BNIP3 as a promising approach to treat UM.
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Affiliation(s)
- Zhongming Jiang
- Department of Gynecology and Obstetrics, LinYi Central Hospital, Shandong, China (mainland)
| | - Fenghua Yu
- Department of Ophthalmonogy, LinYi Central Hospital, Shandong, China (mainland)
| | - Man Li
- Department of Gynecology and Obstetrics, LinYi Central Hospital, Shandong, China (mainland)
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Shrestha A, Champagne DE, Culbreath AK, Rotenberg D, Whitfield AE, Srinivasan R. Transcriptome changes associated with Tomato spotted wilt virus infection in various life stages of its thrips vector, Frankliniella fusca (Hinds). J Gen Virol 2017; 98:2156-2170. [DOI: 10.1099/jgv.0.000874] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Anita Shrestha
- Department of Entomology, University of Georgia, Tifton, GA 31793, USA
| | | | | | - Dorith Rotenberg
- Department of Plant Pathology, Kansas State University, Manhattan, KS 66506, USA
| | - Anna E. Whitfield
- Department of Plant Pathology, Kansas State University, Manhattan, KS 66506, USA
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Phosphorylation of the mitochondrial autophagy receptor Nix enhances its interaction with LC3 proteins. Sci Rep 2017; 7:1131. [PMID: 28442745 PMCID: PMC5430633 DOI: 10.1038/s41598-017-01258-6] [Citation(s) in RCA: 194] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 03/27/2017] [Indexed: 12/24/2022] Open
Abstract
The mitophagy receptor Nix interacts with LC3/GABARAP proteins, targeting mitochondria into autophagosomes for degradation. Here we present evidence for phosphorylation-driven regulation of the Nix:LC3B interaction. Isothermal titration calorimetry and NMR indicate a ~100 fold enhanced affinity of the serine 34/35-phosphorylated Nix LC3-interacting region (LIR) to LC3B and formation of a very rigid complex compared to the non-phosphorylated sequence. Moreover, the crystal structure of LC3B in complex with the Nix LIR peptide containing glutamic acids as phosphomimetic residues and NMR experiments revealed that LIR phosphorylation stabilizes the Nix:LC3B complex via formation of two additional hydrogen bonds between phosphorylated serines of Nix LIR and Arg11, Lys49 and Lys51 in LC3B. Substitution of Lys51 to Ala in LC3B abrogates binding of a phosphomimetic Nix mutant. Functionally, serine 34/35 phosphorylation enhances autophagosome recruitment to mitochondria in HeLa cells. Together, this study provides cellular, biochemical and biophysical evidence that phosphorylation of the LIR domain of Nix enhances mitophagy receptor engagement.
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50
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Cytosolic BNIP3 Dimer Interacts with Mitochondrial BAX Forming Heterodimers in the Mitochondrial Outer Membrane under Basal Conditions. Int J Mol Sci 2017; 18:ijms18040687. [PMID: 28333095 PMCID: PMC5412273 DOI: 10.3390/ijms18040687] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 03/14/2017] [Accepted: 03/20/2017] [Indexed: 02/03/2023] Open
Abstract
The primary function of mitochondria is energy production, a task of particular importance especially for cells with a high energy demand like cardiomyocytes. The B-cell lymphoma (BCL-2) family member BCL-2 adenovirus E1B 19 kDa-interacting protein 3 (BNIP3) is linked to mitochondrial targeting after homodimerization, where it functions in inner membrane depolarization and permeabilization of the mitochondrial outer membrane (MOM) mediating cell death. We investigated the basal distribution of cardiac BNIP3 in vivo and its physical interaction with the pro-death protein BCL2 associated X, apoptosis regulator (BAX) and with mitochondria using immunoblot analysis, co-immunoprecipitation, and continuous wave and pulsed electron paramagnetic resonance spectroscopy techniques. We found that BNIP3 is present as a dimer in the cytosol and in the outer membrane of cardiac mitochondria under basal conditions. It forms disulfide-bridged, but mainly non-covalent dimers in the cytosol. Heterodimers with BAX are formed exclusively in the MOM. Furthermore, our results suggest that BNIP3 interacts with the MOM directly via mitochondrial BAX. However, the physical interactions with BAX and the MOM did not affect the membrane potential and cell viability. These findings suggest that another stimulus other than the mere existence of the BNIP3/BAX dimer in the MOM is required to promote BNIP3 cell-death activity; this could be a potential disturbance of the BNIP3 distribution homeostasis, namely in the direction of the mitochondria.
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