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Domingues N, Pires J, Milosevic I, Raimundo N. Role of lipids in interorganelle communication. Trends Cell Biol 2024:S0962-8924(24)00095-3. [PMID: 38866684 DOI: 10.1016/j.tcb.2024.04.008] [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: 02/06/2024] [Revised: 04/26/2024] [Accepted: 04/29/2024] [Indexed: 06/14/2024]
Abstract
Cell homeostasis and function rely on well-orchestrated communication between different organelles. This communication is ensured by signaling pathways and membrane contact sites between organelles. Many players involved in organelle crosstalk have been identified, predominantly proteins and ions. The role of lipids in interorganelle communication remains poorly understood. With the development and broader availability of methods to quantify lipids, as well as improved spatiotemporal resolution in detecting different lipid species, the contribution of lipids to organelle interactions starts to be evident. However, the specific roles of various lipid molecules in intracellular communication remain to be studied systematically. We summarize new insights in the interorganelle communication field from the perspective of organelles and discuss the roles played by lipids in these complex processes.
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Affiliation(s)
- Neuza Domingues
- Multidisciplinary Institute of Ageing, University of Coimbra, Coimbra, Portugal
| | - Joana Pires
- Multidisciplinary Institute of Ageing, University of Coimbra, Coimbra, Portugal
| | - Ira Milosevic
- Multidisciplinary Institute of Ageing, University of Coimbra, Coimbra, Portugal; Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Nuno Raimundo
- Multidisciplinary Institute of Ageing, University of Coimbra, Coimbra, Portugal; Department of Cellular and Molecular Physiology, Penn State College of Medicine, Hershey, PA, USA; Penn State Cancer Institute, Hershey, PA, USA.
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2
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Kou L, Wang Y, Li J, Zou W, Jin Z, Yin S, Chi X, Sun Y, Wu J, Wang T, Xia Y. Mitochondria-lysosome-extracellular vesicles axis and nanotheranostics in neurodegenerative diseases. Exp Neurol 2024; 376:114757. [PMID: 38508481 DOI: 10.1016/j.expneurol.2024.114757] [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: 12/21/2023] [Revised: 02/29/2024] [Accepted: 03/14/2024] [Indexed: 03/22/2024]
Abstract
The intricate functional interactions between mitochondria and lysosomes play a pivotal role in maintaining cellular homeostasis and proper cellular functions. This dynamic interplay involves the exchange of molecules and signaling, impacting cellular metabolism, mitophagy, organellar dynamics, and cellular responses to stress. Dysregulation of these processes has been implicated in various neurodegenerative diseases. Additionally, mitochondrial-lysosomal crosstalk regulates the exosome release in neurons and glial cells. Under stress conditions, neurons and glial cells exhibit mitochondrial dysfunction and a fragmented network, which further leads to lysosomal dysfunction, thereby inhibiting autophagic flux and enhancing exosome release. This comprehensive review synthesizes current knowledge on mitochondrial regulation of cell death, organelle dynamics, and vesicle trafficking, emphasizing their significant contributions to neurodegenerative diseases. Furthermore, we explore the emerging field of nanomedicine in the management of neurodegenerative diseases. The review provides readers with an insightful overview of nano strategies that are currently advancing the mitochondrial-lysosome-extracellular vesicle axis as a therapeutic approach for mitigating neurodegenerative diseases.
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Affiliation(s)
- Liang Kou
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yiming Wang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jingwen Li
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Wenkai Zou
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zongjie Jin
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Sijia Yin
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xiaosa Chi
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yadi Sun
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jiawei Wu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Tao Wang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Yun Xia
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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Domingues N, Calcagni' A, Pires J, Freire SR, Herz NJ, Huynh T, Wieciorek K, Moreno MJ, Outeiro TF, Girão H, Milosevic I, Ballabio A, Raimundo N. Loss of the lysosomal protein CLN3 modifies the lipid content of the nuclear envelope leading to DNA damage and activation of YAP1 pro-apoptotic signaling. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.31.596474. [PMID: 38853929 PMCID: PMC11160784 DOI: 10.1101/2024.05.31.596474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Batten disease is characterized by early-onset blindness, juvenile dementia and death during the second decade of life. The most common genetic causes are mutations in the CLN3 gene encoding a lysosomal protein. There are currently no therapies targeting the progression of the disease, mostly due to the lack of knowledge about the disease mechanisms. To gain insight into the impact of CLN3 loss on cellular signaling and organelle function, we generated CLN3 knock-out cells in a human cell line (CLN3-KO), and performed RNA sequencing to obtain the cellular transcriptome. Following a multi-dimensional transcriptome analysis, we identified the transcriptional regulator YAP1 as a major driver of the transcriptional changes observed in CLN3-KO cells. We further observed that YAP1 pro-apoptotic signaling is hyperactive as a consequence of CLN3 functional loss in retinal pigment epithelia cells, and in the hippocampus and thalamus of CLN3 exΔ7/8 mice, an established model of Batten disease. Loss of CLN3 activates YAP1 by a cascade of events that starts with the inability of releasing glycerophosphodiesthers from CLN3-KO lysosomes, which leads to perturbations in the lipid content of the nuclear envelope and nuclear dysmorphism. This results in increased number of DNA lesions, activating the kinase c-Abl, which phosphorylates YAP1, stimulating its pro-apoptotic signaling. Altogether, our results highlight a novel organelle crosstalk paradigm in which lysosomal metabolites regulate nuclear envelope content, nuclear shape and DNA homeostasis. This novel molecular mechanism underlying the loss of CLN3 in mammalian cells and tissues may open new c-Abl-centric therapeutic strategies to target Batten disease.
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Yuan Y, Zhang Q, Qiu F, Kang N, Zhang Q. Targeting TRPs in autophagy regulation and human diseases. Eur J Pharmacol 2024:176681. [PMID: 38821165 DOI: 10.1016/j.ejphar.2024.176681] [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: 04/11/2024] [Revised: 05/06/2024] [Accepted: 05/27/2024] [Indexed: 06/02/2024]
Abstract
Transient receptor potential channels (TRPs) are widely recognized as a group of ion channels involved in various sensory perceptions, such as temperature, taste, pressure, and vision. While macroautophagy (hereafter referred to as autophagy) is primarily regulated by core machinery, the ion exchange mediated by TRPs between intracellular and extracellular compartments, as well as within organelles and the cytoplasm, plays a crucial role in autophagy regulation as an important signaling transduction mechanism. Moreover, certain TRPs can directly interact with autophagy regulatory proteins to participate in autophagy regulation. In this article, we provide an in-depth review of the current understanding of the regulatory mechanisms of autophagy, with a specific focus on TRPs. Furthermore, we highlight the potential prospects for drug development targeting TRPs in autophagy for the treatment of human diseases.
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Affiliation(s)
- Yongkang Yuan
- School of Medical Technology, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Qiuju Zhang
- School of Medical Technology, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Feng Qiu
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China; School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China.
| | - Ning Kang
- School of Medical Technology, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China.
| | - Qiang Zhang
- School of Medical Technology, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China.
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Hu Y, Luo NJ, Gan L, Xue HY, Luo KY, Zhang JJ, Wang XZ. Heat stress upregulates arachidonic acid to trigger autophagy in sertoli cells via dysfunctional mitochondrial respiratory chain function. J Transl Med 2024; 22:501. [PMID: 38797842 PMCID: PMC11129461 DOI: 10.1186/s12967-024-05182-y] [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: 12/18/2023] [Accepted: 04/07/2024] [Indexed: 05/29/2024] Open
Abstract
As a key factor in determining testis size and sperm number, sertoli cells (SCs) play a crucial role in male infertility. Heat stress (HS) reduces SCs counts, negatively impacting nutrient transport and supply to germ cells, and leading to spermatogenesis failure in humans and animals. However, how HS affects the number of SCs remains unclear. We hypothesized that changes in SC metabolism contribute to the adverse effects of HS. In this study, we first observed an upregulation of arachidonic acid (AA), an unsaturated fatty acid after HS exposure by LC-MS/MS metabolome detection. By increasing ROS levels, expression of KEAP1 and NRF2 proteins as well as LC3 and LAMP2, 100 µM AA induced autophagy in SCs by activating oxidative stress (OS). We observed adverse effects of AA on mitochondria under HS with a decrease of mitochondrial number and an increase of mitochondrial membrane potential (MMP). We also found that AA alternated the oxygen transport and absorption function of mitochondria by increasing glycolysis flux and decreasing oxygen consumption rate as well as the expression of mitochondrial electron transport chain (ETC) proteins Complex I, II, V. However, pretreatment with 5 mM NAC (ROS inhibitor) and 2 µM Rotenone (mitochondrial ETC inhibitor) reversed the autophagy induced by AA. In summary, AA modulates autophagy in SCs during HS by disrupting mitochondrial ETC function, inferring that the release of AA is a switch-like response, and providing insight into the underlying mechanism of high temperatures causing male infertility.
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Affiliation(s)
- Yu Hu
- Department of Reproductive Medicine, Department of Obstetrics and Gynecology, Affiliated Hospital of Zunyi Medical University, Affiliated Hospital of Zunyi Medical University, 563000, Zunyi, China
- Chongqing Key Laboratory of Forage and Herbivore, College of Veterinary Medicine, Southwest University, 400715, Chongqing, Beibei, China
| | - Nan Jian Luo
- Department of Preclinical Medicine, Zunyi Medical University, 563000, Zunyi, China
| | - Lu Gan
- Chongqing Key Laboratory of Forage and Herbivore, College of Veterinary Medicine, Southwest University, 400715, Chongqing, Beibei, China
| | - Hong Yan Xue
- Chongqing Key Laboratory of Forage and Herbivore, College of Veterinary Medicine, Southwest University, 400715, Chongqing, Beibei, China
| | - Ke Yan Luo
- Department of Reproductive Medicine, Department of Obstetrics and Gynecology, Affiliated Hospital of Zunyi Medical University, Affiliated Hospital of Zunyi Medical University, 563000, Zunyi, China
| | - Jiao Jiao Zhang
- Chongqing Key Laboratory of Forage and Herbivore, College of Veterinary Medicine, Southwest University, 400715, Chongqing, Beibei, China.
| | - Xian Zhong Wang
- Chongqing Key Laboratory of Forage and Herbivore, College of Veterinary Medicine, Southwest University, 400715, Chongqing, Beibei, China.
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Agostini F, Pereyra L, Dale J, Yambire KF, Maglioni S, Schiavi A, Ventura N, Milosevic I, Raimundo N. Up-regulation of cholesterol synthesis by lysosomal defects requires a functional mitochondrial respiratory chain. J Biol Chem 2024:107403. [PMID: 38782205 DOI: 10.1016/j.jbc.2024.107403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/27/2024] [Accepted: 05/03/2024] [Indexed: 05/25/2024] Open
Abstract
Mitochondria and lysosomes are two organelles that carry out both signaling and metabolic roles in cells. Recent evidence has shown that mitochondria and lysosomes are dependent on one another, as primary defects in one cause secondary defects in the other. Although there are functional impairments in both cases, the signaling consequences of primary mitochondrial dysfunction and lysosomal defects are dissimilar. Here, we used RNA sequencing to obtain transcriptomes from cells with primary mitochondrial or lysosomal defects to identify the global cellular consequences associated with mitochondrial or lysosomal dysfunction. We used these data to determine the pathways affected by defects in both organelles, which revealed a prominent role for the cholesterol synthesis pathway. We observed a transcriptional up-regulated of this pathway in cellular and murine models of lysosomal defects, while it is transcriptionally down-regulated in cellular and murine models of mitochondrial defects. We identified a role for the post-transcriptional regulation of transcription factor SREBF1, a master regulator of cholesterol and lipid biosynthesis, in models of mitochondrial respiratory chain deficiency. Furthermore, we found that retention of Ca2+ in lysosomes of cells with mitochondrial respiratory chain defects contributes to the differential regulation of the cholesterol synthesis pathway in the mitochondrial and lysosomal defects tested. Finally, we verified in vivo, using a model of mitochondria-associated disease in C. elegans, that normalization of lysosomal Ca2+ levels results in partial rescue of the developmental delay induced by the respiratory chain deficiency.
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Affiliation(s)
- Francesco Agostini
- Department of Cellular and Molecular Physiology, Penn State College of Medicine, Hershey, PA, USA
| | - Leonardo Pereyra
- Department of Cellular Biochemistry, University Medical Center Goettingen, Germany
| | - Justin Dale
- Department of Cellular and Molecular Physiology, Penn State College of Medicine, Hershey, PA, USA
| | - King Faisal Yambire
- Laboratory of Systems Cancer Biology, The Rockefeller University, New York, NY, USA
| | - Silvia Maglioni
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany; Institute for Clinical Chemistry and Laboratory Diagnostic, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
| | - Alfonso Schiavi
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany
| | - Natascia Ventura
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany; Institute for Clinical Chemistry and Laboratory Diagnostic, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
| | - Ira Milosevic
- Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK; Multidisciplinary Institute for Ageing, University of Coimbra, Coimbra, Portugal
| | - Nuno Raimundo
- Department of Cellular and Molecular Physiology, Penn State College of Medicine, Hershey, PA, USA; Penn State Cancer Institute, Penn State College of Medicine, Hershey, PA, USA.
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Du J, Liu F, Liu X, Zhao D, Wang D, Sun H, Yan C, Zhao Y. Lysosomal dysfunction and overload of nucleosides in thymidine phosphorylase deficiency of MNGIE. J Transl Med 2024; 22:449. [PMID: 38741129 DOI: 10.1186/s12967-024-05275-8] [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: 02/20/2024] [Accepted: 05/06/2024] [Indexed: 05/16/2024] Open
Abstract
Inherited deficiency of thymidine phosphorylase (TP), encoded by TYMP, leads to a rare disease with multiple mitochondrial DNA (mtDNA) abnormalities, mitochondrial neurogastrointestinal encephalomyopathy (MNGIE). However, the impact of TP deficiency on lysosomes remains unclear, which are important for mitochondrial quality control and nucleic acid metabolism. Muscle biopsy tissue and skin fibroblasts from MNGIE patients, patients with m.3243 A > G mitochondrial encephalopathy, lactic acidosis and stroke-like episodes (MELAS) and healthy controls (HC) were collected to perform mitochondrial and lysosomal functional analyses. In addition to mtDNA abnormalities, compared to controls distinctively reduced expression of LAMP1 and increased mitochondrial content were detected in the muscle tissue of MNGIE patients. Skin fibroblasts from MNGIE patients showed decreased expression of LAMP2, lowered lysosomal acidity, reduced enzyme activity and impaired protein degradation ability. TYMP knockout or TP inhibition in cells can also induce the similar lysosomal dysfunction. Using lysosome immunoprecipitation (Lyso- IP), increased mitochondrial proteins, decreased vesicular proteins and V-ATPase enzymes, and accumulation of various nucleosides were detected in lysosomes with TP deficiency. Treatment of cells with high concentrations of dThd and dUrd also triggers lysosomal dysfunction and disruption of mitochondrial homeostasis. Therefore, the results provided evidence that TP deficiency leads to nucleoside accumulation in lysosomes and lysosomal dysfunction, revealing the widespread disruption of organelles underlying MNGIE.
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Affiliation(s)
- Jixiang Du
- Department of Rheumatology and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Cheeloo College of Medicine, Qilu Hospital, Shandong University, West Wenhua Street No.107, Jinan, 250012, Shandong, China
- Department of Rheumatology and Immunology, Cheeloo College of Medicine, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
| | - Fuchen Liu
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Cheeloo College of Medicine, Qilu Hospital, Shandong University, West Wenhua Street No.107, Jinan, 250012, Shandong, China
| | - Xihan Liu
- Key Laboratory of Experimental Teratology, Ministry of Education, School of Basic Medical Science, Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Dandan Zhao
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Cheeloo College of Medicine, Qilu Hospital, Shandong University, West Wenhua Street No.107, Jinan, 250012, Shandong, China
| | - Dongdong Wang
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Cheeloo College of Medicine, Qilu Hospital, Shandong University, West Wenhua Street No.107, Jinan, 250012, Shandong, China
| | - Hongsheng Sun
- Department of Rheumatology and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
- Department of Rheumatology and Immunology, Cheeloo College of Medicine, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
| | - Chuanzhu Yan
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Cheeloo College of Medicine, Qilu Hospital, Shandong University, West Wenhua Street No.107, Jinan, 250012, Shandong, China.
- Mitochondrial Medicine Laboratory, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, 266000, Shandong, China.
- Brain Science Research Institute, Shandong University, Jinan, 250012, Shandong, China.
| | - Yuying Zhao
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Cheeloo College of Medicine, Qilu Hospital, Shandong University, West Wenhua Street No.107, Jinan, 250012, Shandong, China.
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Agostini F, Pereyra L, Dale J, Yambire KF, Maglioni S, Schiavi A, Ventura N, Milosevic I, Raimundo N. Up-regulation of cholesterol synthesis by lysosomal defects requires a functional mitochondrial respiratory chain. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.06.583589. [PMID: 38496624 PMCID: PMC10942416 DOI: 10.1101/2024.03.06.583589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Mitochondria and lysosomes are two organelles that carry out both signaling and metabolic roles in the cells. Recent evidence has shown that mitochondria and lysosomes are dependent on one another, as primary defects in one cause secondary defects in the other. Nevertheless, the signaling consequences of primary mitochondrial malfunction and of primary lysosomal defects are not similar, despite in both cases there are impairments of mitochondria and of lysosomes. Here, we used RNA sequencing to obtain transcriptomes from cells with primary mitochondrial or lysosomal defects, to identify what are the global cellular consequences that are associated with malfunction of mitochondria or lysosomes. We used these data to determine what are the pathways that are affected by defects in both organelles, which revealed a prominent role for the cholesterol synthesis pathway. This pathway is transcriptionally up-regulated in cellular and mouse models of lysosomal defects and is transcriptionally down-regulated in cellular and mouse models of mitochondrial defects. We identified a role for post-transcriptional regulation of the transcription factor SREBF1, a master regulator of cholesterol and lipid biosynthesis, in models of mitochondrial respiratory chain deficiency. Furthermore, the retention of Ca 2+ in the lysosomes of cells with mitochondrial respiratory chain defects contributes to the differential regulation of the cholesterol synthesis pathway in the mitochondrial and lysosomal defects tested. Finally, we verified in vivo , using models of mitochondria-associated diseases in C. elegans , that normalization of lysosomal Ca 2+ levels results in partial rescue of the developmental arrest induced by the respiratory chain deficiency.
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Zhang L, Wang J, Deng W, Gui F, Peng F, Zhu Q. Solamargine Induces Hepatocellular Carcinoma Cell Apoptosis and Ferroptosis via Regulating STAT1/MTCH1 Axis. Biochem Genet 2024:10.1007/s10528-024-10749-x. [PMID: 38429602 DOI: 10.1007/s10528-024-10749-x] [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: 09/22/2023] [Accepted: 02/17/2024] [Indexed: 03/03/2024]
Abstract
BACKGROUND Solamargine (SM) has been shown to play anti-tumor role in hepatocellular carcinoma (HCC). However, the underlying molecular mechanisms of SM in HCC progression deserve further exploration. METHODS HCC cell proliferation and apoptosis were assessed by cell counting kit 8 assay, colony formation assay and flow cytometry. Ferroptosis was evaluated by detecting the levels of Fe2+, iron, MDA, ROS and GSH in HCC cells. In addition, mitochondrial carrier 1 (MTCH1) mRNA level was detected by quantitative real-time PCR. Western blot was used to test MTCH1 and signal transduction and activation of transcription 1 (STAT1) protein levels. Dual-luciferase reporter assay was employed to analyze the interaction between STAT1 and MTCH1. A mouse xenograft model was also constructed to explore the role of SM in vivo. RESULTS SM could potentially suppress HCC cell growth by inducing ferroptosis. MTCH1 was highly expressed in HCC tissues and cells, and its silencing inhibited HCC cell proliferation, promoted apoptosis and ferroptosis. MTCH1 expression was reduced by SM, and its overexpression reversed SM-induced HCC cell apoptosis and ferroptosis. Furthermore, STAT1 facilitated MTCH1 transcription and promoted its expression. Besides, STAT1 expression could be reduced by SM, and its overexpression abolished the decreasing effect of SM on MTCH1 expression. In vivo, SM suppressed HCC tumor growth by reducing MTCH1 expression. CONCLUSION SM promoted HCC cell apoptosis and ferroptosis via the STAT1/MTCH1 axis.
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Affiliation(s)
- Limei Zhang
- Department of Gastroenterology, Shenzhen Longhua District Central Hospital, No.187, Guanlan Street, Shenzhen, 518110, China
| | - Jinfu Wang
- Department of Gastroenterology, Shenzhen Longhua District Central Hospital, No.187, Guanlan Street, Shenzhen, 518110, China
| | - Weiping Deng
- Department of Gastroenterology, Shenzhen Longhua District Central Hospital, No.187, Guanlan Street, Shenzhen, 518110, China
| | - Fenfang Gui
- Department of Gastroenterology, Shenzhen Longhua District Central Hospital, No.187, Guanlan Street, Shenzhen, 518110, China
| | - Fanzhou Peng
- Department of Gastroenterology, Shenzhen Longhua District Central Hospital, No.187, Guanlan Street, Shenzhen, 518110, China
| | - Qian Zhu
- Department of Gastroenterology, Shenzhen Longhua District Central Hospital, No.187, Guanlan Street, Shenzhen, 518110, China.
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Babich R, Merutka I, Craig E, Harichandara A, De Silva PMCS, Gunasekara TDKSC, Jayasundara N. Transcriptomic and behavioral analyses reveal unique target tissues and molecular pathways associated with embryonic exposure to low level glyphosate and metal mixtures in zebrafish. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169271. [PMID: 38114029 PMCID: PMC10964846 DOI: 10.1016/j.scitotenv.2023.169271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 12/21/2023]
Abstract
Investigation of developmental molecular events following exposure to environmentally relevant agrochemical mixtures is critical to predicting their potential long-term ecological and human health risks. Here, we sought to uncover transcriptomic changes during zebrafish (Danio rerio) embryonic development following exposure to glyphosate and co-exposure to metals. Glyphosate is widely used globally with an allowable drinking water limit of 700 ppb. We examined effects of glyphosate (10 ppb) alone and when co-exposed to a metal mixture containing low levels of arsenic (4 ppb), lead (5 ppb), cadmium (2 ppb), and vanadium (15 ppb). This mixture was derived based on behavioral and morphological toxicity findings and environmentally relevant concentrations found in agricultural regions where glyphosate and metals are ubiquitously present. Gene expression patterns coupled to a single-cell transcriptomic dataset revealed that developmental exposure (28-72 h post fertilization) to glyphosate dysregulates expression of developmental genes specific to the central nervous system. Subsequent studies indicated significant suppression of larval zebrafish movement with 10 ppb glyphosate exposure. Studies with glyphosate + metals mixture and metals mixture alone showed unique developmental transcriptomic patterns and behavioral changes compared to glyphosate exposure alone. However, some outcomes (e.g., changes in expression of genes involved in epigenetic regulation and extracellular matrix patterning) were common across all three exposures compared to the control. Notably, glyphosate + metals co-exposure distinctly suppresses lysosomal transcripts and targets renal developmental genes. While further studies are required to uncover the precise nature of the interactions between glyphosate and metals, our study shows that glyphosate at very low levels is a behavioral and neurotoxicant that changes when metals are present. Given this herbicide affects distinctive physiological processes, including renal development and lysosomal dysregulation when co-exposed with metals, we conclude that environmental cation levels should be considered in glyphosate toxicity and risk assessment.
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Affiliation(s)
- Remy Babich
- University of Maine, Orono, ME 14069, United States of America.
| | - Ilaria Merutka
- Nicholas School of the Environment, Duke University, Durham, NC 27708, United States of America
| | - Emily Craig
- University of Maine, Orono, ME 14069, United States of America; Nicholas School of the Environment, Duke University, Durham, NC 27708, United States of America
| | | | | | | | - Nishad Jayasundara
- University of Maine, Orono, ME 14069, United States of America; Nicholas School of the Environment, Duke University, Durham, NC 27708, United States of America
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11
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Ahola S, Langer T. Ferroptosis in mitochondrial cardiomyopathy. Trends Cell Biol 2024; 34:150-160. [PMID: 37419738 DOI: 10.1016/j.tcb.2023.06.002] [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: 04/13/2023] [Revised: 06/05/2023] [Accepted: 06/12/2023] [Indexed: 07/09/2023]
Abstract
Ferroptosis is a form of necrotic cell death characterized by iron-dependent lipid peroxidation culminating in membrane rupture. Accumulating evidence links ferroptosis to multiple cardiac diseases and identifies mitochondria as important regulators of ferroptosis. Mitochondria are not only a major source of reactive oxygen species (ROS) but also counteract ferroptosis by preserving cellular redox balance and oxidative defense. Recent evidence has revealed that the mitochondrial integrated stress response limits oxidative stress and ferroptosis in oxidative phosphorylation (OXPHOS)-deficient cardiomyocytes and protects against mitochondrial cardiomyopathy. We summarize the multiple ways in which mitochondria modulate the susceptibility of cells to ferroptosis, and discuss the implications of ferroptosis for cardiomyopathies in mitochondrial disease.
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Affiliation(s)
- Sofia Ahola
- Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Thomas Langer
- Max Planck Institute for Biology of Ageing, Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.
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12
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Tsopela V, Korakidis E, Lagou D, Kalliampakou KI, Milona RS, Kyriakopoulou E, Mpekoulis G, Gemenetzi I, Stylianaki EA, Sideris CD, Sioli A, Kefallinos D, Sideris DC, Aidinis V, Eliopoulos AG, Kambas K, Vassilacopoulou D, Vassilaki N. L-Dopa decarboxylase modulates autophagy in hepatocytes and is implicated in dengue virus-caused inhibition of autophagy completion. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119602. [PMID: 37778471 DOI: 10.1016/j.bbamcr.2023.119602] [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: 06/03/2023] [Revised: 09/13/2023] [Accepted: 09/24/2023] [Indexed: 10/03/2023]
Abstract
The enzyme L-Dopa Decarboxylase (DDC) synthesizes the catecholamine dopamine and the indolamine serotonin. Apart from its role in the brain as a neurotransmitter biosynthetic enzyme, DDC has been detected also in the liver and other peripheral organs, where it is implicated in cell proliferation, apoptosis, and host-virus interactions. Dengue virus (DENV) suppresses DDC expression at the later stages of infection, during which DENV also inhibits autophagosome-lysosome fusion. As dopamine affects autophagy in neuronal cells, we investigated the possible association of DDC with autophagy in human hepatocytes and examined whether DDC mediates the relationship between DENV infection and autophagy. We performed DDC silencing/overexpression and evaluated autophagic markers upon induction of autophagy, or suppression of autophagosome-lysosome fusion. Our results showed that DDC favored the autophagic process, at least in part, through its biosynthetic function, while knockdown of DDC or inhibition of DDC enzymatic activity prevented autophagy completion. In turn, autophagy induction upregulated DDC, while autophagy reduction by chemical or genetic (ATG14L knockout) ways caused the opposite effect. This study also implicated DDC with the cellular energetic status, as DDC silencing reduced the oxidative phosphorylation activity of the cell. We also report that upon DDC silencing, the repressive effect of DENV on the completion of autophagy was enhanced, and the inhibition of autolysosome formation did not exert an additive effect on viral proliferation. These data unravel a novel role of DDC in the autophagic process and suggest that DENV downregulates DDC expression to inhibit the completion of autophagy, reinforcing the importance of this protein in viral infections.
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Affiliation(s)
- Vassilina Tsopela
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115 21 Athens, Greece
| | - Evangelos Korakidis
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115 21 Athens, Greece
| | - Despoina Lagou
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115 21 Athens, Greece
| | | | - Raphaela S Milona
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115 21 Athens, Greece
| | - Eirini Kyriakopoulou
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115 21 Athens, Greece
| | - George Mpekoulis
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115 21 Athens, Greece
| | - Ioanna Gemenetzi
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115 21 Athens, Greece
| | - Elli-Anna Stylianaki
- Institute for Fundamental Biomedical Research, Biomedical Sciences Research Center Alexander Fleming, 16672 Athens, Greece
| | | | - Aggelina Sioli
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115 21 Athens, Greece
| | - Dionysis Kefallinos
- School of Electrical Engineering and Computer Science, National Technical University of Athens, 157 73 Athens, Greece
| | - Diamantis C Sideris
- Section of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, 157 01 Athens, Greece
| | - Vassilis Aidinis
- Institute for Fundamental Biomedical Research, Biomedical Sciences Research Center Alexander Fleming, 16672 Athens, Greece
| | - Aristides G Eliopoulos
- Department of Biology, School of Medicine, NKUA, 115 27 Athens, Greece; Center of Basic Research, Biomedical Research Foundation Academy of Athens, 115 27 Athens, Greece
| | - Konstantinos Kambas
- Laboratory of Molecular Genetics, Department of Immunology, Hellenic Pasteur Institute, 115 21 Athens, Greece
| | - Dido Vassilacopoulou
- Section of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, 157 01 Athens, Greece
| | - Niki Vassilaki
- Laboratory of Molecular Virology, Hellenic Pasteur Institute, 115 21 Athens, Greece.
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13
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Han A, Peng T, Xie Y, Zhang W, Sun W, Xie Y, Ma Y, Wang C, Xie N. Mitochondrial-regulated Tregs: potential therapeutic targets for autoimmune diseases of the central nervous system. Front Immunol 2023; 14:1301074. [PMID: 38149252 PMCID: PMC10749924 DOI: 10.3389/fimmu.2023.1301074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 11/30/2023] [Indexed: 12/28/2023] Open
Abstract
Regulatory T cells (Tregs) can eliminate autoreactive lymphocytes, induce self-tolerance, and suppress the inflammatory response. Mitochondria, as the energy factories of cells, are essential for regulating the survival, differentiation, and function of Tregs. Studies have shown that patients with autoimmune diseases of the central nervous system, such as multiple sclerosis, neuromyelitis optica spectrum disorder, and autoimmune encephalitis, have aberrant Tregs and mitochondrial damage. However, the role of mitochondrial-regulated Tregs in autoimmune diseases of the central nervous system remains inconclusive. Therefore, this study reviews the mitochondrial regulation of Tregs in autoimmune diseases of the central nervous system and investigates the possible mitochondrial therapeutic targets.
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Affiliation(s)
- Aoya Han
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Tingting Peng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yinyin Xie
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wanwan Zhang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenlin Sun
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yi Xie
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yunqing Ma
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Cui Wang
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Nanchang Xie
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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14
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Boya P, Kaarniranta K, Handa JT, Sinha D. Lysosomes in retinal health and disease. Trends Neurosci 2023; 46:1067-1082. [PMID: 37848361 PMCID: PMC10842632 DOI: 10.1016/j.tins.2023.09.006] [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: 06/18/2023] [Revised: 09/06/2023] [Accepted: 09/24/2023] [Indexed: 10/19/2023]
Abstract
Lysosomes play crucial roles in various cellular processes - including endocytosis, phagocytosis, and autophagy - which are vital for maintaining retinal health. Moreover, these organelles serve as environmental sensors and act as central hubs for multiple signaling pathways. Through communication with other cellular components, such as mitochondria, lysosomes orchestrate the cytoprotective response essential for preserving cellular homeostasis. This coordination is particularly critical in the retina, given its high metabolic rate and susceptibility to photo-oxidative stress. Consequently, impaired lysosomal function and dysregulated communication between lysosomes and other organelles contribute significantly to the pathobiology of major retinal degenerative diseases. This review explores the pivotal role of lysosomes in retinal cells and their involvement in retinal degenerative diseases.
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Affiliation(s)
- Patricia Boya
- Department of Neuroscience, University of Fribourg, Fribourg, Switzerland
| | - Kai Kaarniranta
- Department of Ophthalmology, University of Eastern Finland, Kuopio, Finland; Department of Ophthalmology, Kuopio University Hospital, Kuopio, Finland; Department of Molecular Genetics, University of Lodz, Lodz, Poland
| | - James T Handa
- The Wilmer Eye Institute, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Debasish Sinha
- The Wilmer Eye Institute, The Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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15
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Guil-Luna S, Sanchez-Montero MT, Rodríguez-Ariza A. S-Nitrosylation at the intersection of metabolism and autophagy: Implications for cancer. Biochim Biophys Acta Rev Cancer 2023; 1878:189012. [PMID: 37918453 DOI: 10.1016/j.bbcan.2023.189012] [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: 06/26/2023] [Revised: 09/26/2023] [Accepted: 10/20/2023] [Indexed: 11/04/2023]
Abstract
Metabolic plasticity, which determines tumour growth and metastasis, is now understood to be a flexible and context-specific process in cancer metabolism. One of the major pathways contributing to metabolic adaptations in eucaryotic cells is autophagy, a cellular degradation and recycling process that is activated during periods of starvation or stress to maintain metabolite and biosynthetic intermediate levels. Consequently, there is a close association between the metabolic adaptive capacity of tumour cells and autophagy-related pathways in cancer. Additionally, nitric oxide regulates protein function and signalling through S-nitrosylation, a post-translational modification that can also impact metabolism and autophagy. The primary objective of this review is to provide an up-to-date overview of the role of S-nitrosylation at the intersection of metabolism and autophagy in cancer. First, we will outline the involvement of S-nitrosylation in the metabolic adaptations that occur in tumours. Then, we will discuss the multifaceted role of autophagy in cancer, the interplay between metabolism and autophagy during tumour progression, and the contribution of S-nitrosylation to autophagic dysregulation in cancer. Finally, we will present insights into relevant therapeutic aspects and discuss prospects for the future.
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Affiliation(s)
- Silvia Guil-Luna
- Maimónides Biomedical Research Institute of Córdoba (IMIBIC), Córdoba, Spain; Cancer Network Biomedical Research Center (CIBERONC), Madrid, Spain; Department of Comparative Anatomy and Pathology, Faculty of Veterinary Medicine of Córdoba, University of Córdoba, Córdoba, Spain
| | | | - Antonio Rodríguez-Ariza
- Maimónides Biomedical Research Institute of Córdoba (IMIBIC), Córdoba, Spain; Cancer Network Biomedical Research Center (CIBERONC), Madrid, Spain; Medical Oncology Department, Reina Sofía University Hospital, Córdoba, Spain.
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16
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Clement D, Szabo EK, Krokeide SZ, Wiiger MT, Vincenti M, Palacios D, Chang YT, Grimm C, Patel S, Stenmark H, Brech A, Majhi RK, Malmberg KJ. The Lysosomal Calcium Channel TRPML1 Maintains Mitochondrial Fitness in NK Cells through Interorganelle Cross-Talk. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:1348-1358. [PMID: 37737664 PMCID: PMC10579149 DOI: 10.4049/jimmunol.2300406] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 08/18/2023] [Indexed: 09/23/2023]
Abstract
Cytotoxic lymphocytes eliminate cancer cells through the release of lytic granules, a specialized form of secretory lysosomes. This compartment is part of the pleomorphic endolysosomal system and is distinguished by its highly dynamic Ca2+ signaling machinery. Several transient receptor potential (TRP) calcium channels play essential roles in endolysosomal Ca2+ signaling and ensure the proper function of these organelles. In this study, we examined the role of TRPML1 (TRP cation channel, mucolipin subfamily, member 1) in regulating the homeostasis of secretory lysosomes and their cross-talk with mitochondria in human NK cells. We found that genetic deletion of TRPML1, which localizes to lysosomes in NK cells, led to mitochondrial fragmentation with evidence of collapsed mitochondrial cristae. Consequently, TRPML1-/- NK92 (NK92ML1-/-) displayed loss of mitochondrial membrane potential, increased reactive oxygen species stress, reduced ATP production, and compromised respiratory capacity. Using sensitive organelle-specific probes, we observed that mitochondria in NK92ML1-/- cells exhibited evidence of Ca2+ overload. Moreover, pharmacological activation of the TRPML1 channel in primary NK cells resulted in upregulation of LC3-II, whereas genetic deletion impeded autophagic flux and increased accumulation of dysfunctional mitochondria. Thus, TRPML1 impacts autophagy and clearance of damaged mitochondria. Taken together, these results suggest that an intimate interorganelle communication in NK cells is orchestrated by the lysosomal Ca2+ channel TRPML1.
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Affiliation(s)
- Dennis Clement
- Precision Immunotherapy Alliance, Institute for Cancer Research, University of Oslo, Norway
- Department of Cancer Immunology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Edina K. Szabo
- Precision Immunotherapy Alliance, Institute for Cancer Research, University of Oslo, Norway
| | | | - Merete Thune Wiiger
- Department of Cancer Immunology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Marianna Vincenti
- Precision Immunotherapy Alliance, Institute for Cancer Research, University of Oslo, Norway
- Department of Cancer Immunology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Daniel Palacios
- Precision Immunotherapy Alliance, Institute for Cancer Research, University of Oslo, Norway
- Department of Cancer Immunology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Young-Tae Chang
- Department of Chemistry, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Christian Grimm
- Department of Pharmacology and Toxicology, Faculty of Medicine, University of Munich, Munich, Germany
| | - Sandip Patel
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
| | - Harald Stenmark
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Montebello, Oslo, Norway
| | - Andreas Brech
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Montebello, Oslo, Norway
| | - Rakesh Kumar Majhi
- Precision Immunotherapy Alliance, Institute for Cancer Research, University of Oslo, Norway
- Department of Cancer Immunology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- Tissue Restoration Lab, Department of Biological Sciences and Bioengineering, Mehta Family Center of Engineering and Medicine, Indian Institute of Technology Kanpur, Kanpur, India
| | - Karl-Johan Malmberg
- Precision Immunotherapy Alliance, Institute for Cancer Research, University of Oslo, Norway
- Department of Cancer Immunology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institute, Stockholm, Sweden
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17
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Liu Y, Fu T, Li G, Li B, Luo G, Li N, Geng Q. Mitochondrial transfer between cell crosstalk - An emerging role in mitochondrial quality control. Ageing Res Rev 2023; 91:102038. [PMID: 37625463 DOI: 10.1016/j.arr.2023.102038] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/30/2023] [Accepted: 08/18/2023] [Indexed: 08/27/2023]
Abstract
Intercellular signaling and component conduction are essential for multicellular organisms' homeostasis, and mitochondrial transcellular transport is a key example of such cellular component exchange. In physiological situations, mitochondrial transfer is linked with biological development, energy coordination, and clearance of harmful components, remarkably playing important roles in maintaining mitochondrial quality. Mitochondria are engaged in many critical biological activities, like oxidative metabolism and biomolecular synthesis, and are exclusively prone to malfunction in pathological processes. Importantly, severe mitochondrial damage will further amplify the defects in the mitochondrial quality control system, which will mobilize more active mitochondrial transfer, replenish exogenous healthy mitochondria, and remove endogenous damaged mitochondria to facilitate disease outcomes. This review explores intercellular mitochondrial transport in cells, its role in cellular mitochondrial quality control, and the linking mechanisms in cellular crosstalk. We also describe advances in therapeutic strategies for diseases that target mitochondrial transfer.
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Affiliation(s)
- Yi Liu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Tinglv Fu
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Guorui Li
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Boyang Li
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Guoqing Luo
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ning Li
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China.
| | - Qing Geng
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China.
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18
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You M, Li S, Yan S, Yao D, Wang T, Wang Y. Exposure to nonylphenol in early life causes behavioural deficits related with autism spectrum disorders in rats. ENVIRONMENT INTERNATIONAL 2023; 180:108228. [PMID: 37802007 DOI: 10.1016/j.envint.2023.108228] [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: 06/13/2023] [Revised: 08/31/2023] [Accepted: 09/20/2023] [Indexed: 10/08/2023]
Abstract
Early-life exposure to environmental endocrine disruptors (EDCs) is a potential risk factor for autism spectrum disorder (ASD). Exposure to nonylphenol (NP), a typical EDC, is known to cause some long-term behavioural abnormalities. Moreover, these abnormal behaviours are the most frequent psychiatric co-morbidities in ASD. However, the direct evidence for the link between NP exposure in early life and ASD-like behavioural phenotypes is still missing. In the present study, typical ASD-like behaviours induced by valproic acid treatment were considered as a positive behavioural control. We investigated impacts on social behaviours following early-life exposure to NP, and explored effects of this exposure on neuronal dendritic spines, mitochondria function, oxidative stress, and endoplasmic reticulum (ER) stress. Furthermore, primary cultured rat neurons were employed as in vitro model to evaluate changes in dendritic spine caused by exposure to NP, and oxidative stress and ER stress were specifically modulated to further explore their roles in these changes. Our results indicated rats exposed to NP in early life showed mild ASD-like behaviours. Moreover, we also found the activation of ER stress triggered by oxidative stress may contribute to dendritic spine decrease and synaptic dysfunction, which may underlie neurobehavioural abnormalities induced by early-life exposure to NP.
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Affiliation(s)
- Mingdan You
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China; School of Public Heath, Guizhou Medical University, Guiyang, Guizhou, People's Republic of China
| | - Siyao Li
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning, People's Republic of China
| | - Siyu Yan
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning, People's Republic of China
| | - Dianqi Yao
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning, People's Republic of China
| | - Tingyu Wang
- College of Medical Laboratory, Dalian Medical University, Dalian, Liaoning, People's Republic of China
| | - Yi Wang
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, People's Republic of China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning, People's Republic of China.
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19
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Hao T, Yu J, Wu Z, Jiang J, Gong L, Wang B, Guo H, Zhao H, Lu B, Engelender S, He H, Song Z. Hypoxia-reprogramed megamitochondrion contacts and engulfs lysosome to mediate mitochondrial self-digestion. Nat Commun 2023; 14:4105. [PMID: 37433770 DOI: 10.1038/s41467-023-39811-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/29/2023] [Indexed: 07/13/2023] Open
Abstract
Mitochondria are the key organelles for sensing oxygen, which is consumed by oxidative phosphorylation to generate ATP. Lysosomes contain hydrolytic enzymes that degrade misfolded proteins and damaged organelles to maintain cellular homeostasis. Mitochondria physically and functionally interact with lysosomes to regulate cellular metabolism. However, the mode and biological functions of mitochondria-lysosome communication remain largely unknown. Here, we show that hypoxia remodels normal tubular mitochondria into megamitochondria by inducing broad inter-mitochondria contacts and subsequent fusion. Importantly, under hypoxia, mitochondria-lysosome contacts are promoted, and certain lysosomes are engulfed by megamitochondria, in a process we term megamitochondria engulfing lysosome (MMEL). Both megamitochondria and mature lysosomes are required for MMEL. Moreover, the STX17-SNAP29-VAMP7 complex contributes to mitochondria-lysosome contacts and MMEL under hypoxia. Intriguingly, MMEL mediates a mode of mitochondrial degradation, which we termed mitochondrial self-digestion (MSD). Moreover, MSD increases mitochondrial ROS production. Our results reveal a mode of crosstalk between mitochondria and lysosomes and uncover an additional pathway for mitochondrial degradation.
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Affiliation(s)
- Tianshu Hao
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Jianglong Yu
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Zhida Wu
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Jie Jiang
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Longlong Gong
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Bingjun Wang
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Hanze Guo
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Huabin Zhao
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Bin Lu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Simone Engelender
- Department of Biochemistry, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - He He
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China.
| | - Zhiyin Song
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China.
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20
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Agostini F, Bisaglia M, Plotegher N. Linking ROS Levels to Autophagy: The Key Role of AMPK. Antioxidants (Basel) 2023; 12:1406. [PMID: 37507945 PMCID: PMC10376219 DOI: 10.3390/antiox12071406] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/04/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
Oxygen reactive species (ROS) are a group of molecules generated from the incomplete reduction of oxygen. Due to their high reactivity, ROS can interact with and influence the function of multiple targets, which include DNA, lipids, and proteins. Among the proteins affected by ROS, AMP-activated protein kinase (AMPK) is considered a major sensor of the intracellular energetic status and a crucial hub involved in the regulation of key cellular processes, like autophagy and lysosomal function. Thanks to these features, AMPK has been recently demonstrated to be able to perceive signals related to the variation of mitochondrial dynamics and to transduce them to the lysosomes, influencing the autophagic flux. Since ROS production is largely dependent on mitochondrial activity, through the modulation of AMPK these molecules may represent important signaling agents which participate in the crosstalk between mitochondria and lysosomes, allowing the coordination of these organelles' functions. In this review, we will describe the mechanisms through which ROS activate AMPK and the signaling pathways that allow this protein to affect the autophagic process. The picture that emerges from the literature is that AMPK regulation is highly tissue-specific and that different pools of AMPK can be localized at specific intracellular compartments, thus differentially responding to altered ROS levels. For this reason, future studies will be highly advisable to discriminate the specific contribution of the activation of different AMPK subpopulations to the autophagic pathway.
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Affiliation(s)
- Francesco Agostini
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
| | - Marco Bisaglia
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
- Study Center for Neurodegeneration (CESNE), 35121 Padova, Italy
| | - Nicoletta Plotegher
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
- Study Center for Neurodegeneration (CESNE), 35121 Padova, Italy
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21
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Ijaz MU, Shahzadi S, Hamza A, Azmat R, Anwar H, Afsar T, Shafique H, Bhat MA, Naglah AM, Al-Omar MA, Razak S. Alleviative effects of pinostrobin against cadmium-induced renal toxicity in rats by reducing oxidative stress, apoptosis, inflammation, and mitochondrial dysfunction. Front Nutr 2023; 10:1175008. [PMID: 37342552 PMCID: PMC10278233 DOI: 10.3389/fnut.2023.1175008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 04/26/2023] [Indexed: 06/23/2023] Open
Abstract
Introduction Cadmium (Cd) is a highly toxic heavy metal that can be found everywhere in the environment and can have harmful effects on both human and animal health. Pinostrobin (PSB) is a bioactive natural flavonoid isolated from Boesenbergia rotunda with several pharmacological properties, such as antiinflammatory, anticancer, antioxidant, and antiviral. This investigation was intended to assess the therapeutic potential of PSB against Cd-induced kidney damage in rats. Methods In total, 48 Sprague Dawley rats were divided into four groups: a control, a Cd (5 mg/kg), a Cd + PSB group (5 mg/kg Cd and 10 mg/kg PSB), and a PSB group (10 mg/kg) that received supplementation for 30 days. Results Exposure to Cd led to a decrease in the activities of catalase (CAT), glutathione reductase (GSR), superoxide dismutase (SOD), and glutathione peroxidase (GSH-PX), whereas levels of reactive oxygen species (ROS) and malondialdehyde (MDA) increased. Cd exposure also caused a substantial increase in urea, kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), and creatinine levels. Moreover, a noticeable decline was noticed in creatinine clearance. Moreover, Cd exposure considerably increased the levels of inflammatory indices, including interleukin-1b (IL-1b), tumor necrosis factor-a (TNF-a), interleukin-6 (IL-6), nuclear factor kappa-B (NF-kB), inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2) activity. Cd treatment decreased the expression of the antiapoptotic markers (Bcl-2) while increasing the expression of apoptotic markers (Bax and Caspase-3). Furthermore, Cd treatment substantially reduced the TCA cycle enzyme activity, such as alpha-ketoglutarate dehydrogenase, succinate dehydrogenase, malate dehydrogenase, and isocitrate dehydrogenase. Moreover, mitochondrial electron transport chain enzymes, succinatedehydrogenase, NADH dehydrogenase, cytochrome c-oxidase, and coenzyme Q-cytochrome reductase activities were also decreased following Cd exposure. PSB administration substantially reduced the mitochondrial membrane potential while inducing significant histological damage. However, PSB treatment significantly reduced Cd-mediated renal damage in rats. Conclusion Thus, the present investigation discovered that PSB has ameliorative potential against Cd-induced renal dysfunction in rats.
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Affiliation(s)
- Muhammad Umar Ijaz
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Sabahat Shahzadi
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Ali Hamza
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Rabia Azmat
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Haseeb Anwar
- Department of Physiology, Government College University, Faisalabad, Pakistan
| | - Tayyaba Afsar
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Huma Shafique
- Institute of Cellular Medicine, Newcastle University Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Mashooq Ahmad Bhat
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed M. Naglah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed A. Al-Omar
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Suhail Razak
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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Hanelova K, Raudenska M, Kratochvilova M, Navratil J, Vicar T, Bugajova M, Gumulec J, Masarik M, Balvan J. Autophagy modulators influence the content of important signalling molecules in PS-positive extracellular vesicles. Cell Commun Signal 2023; 21:120. [PMID: 37226246 DOI: 10.1186/s12964-023-01126-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 04/06/2023] [Indexed: 05/26/2023] Open
Abstract
Extracellular vesicles (EVs) are important mediators of intercellular communication in the tumour microenvironment. Many studies suggest that cancer cells release higher amounts of EVs exposing phosphatidylserine (PS) at the surface. There are lots of interconnections between EVs biogenesis and autophagy machinery. Modulation of autophagy can probably affect not only the quantity of EVs but also their content, which can deeply influence the resulting pro-tumourigenic or anticancer effect of autophagy modulators. In this study, we found that autophagy modulators autophinib, CPD18, EACC, bafilomycin A1 (BAFA1), 3-hydroxychloroquine (HCQ), rapamycin, NVP-BEZ235, Torin1, and starvation significantly alter the composition of the protein content of phosphatidylserine-positive EVs (PS-EVs) produced by cancer cells. The greatest impact had HCQ, BAFA1, CPD18, and starvation. The most abundant proteins in PS-EVs were proteins typical for extracellular exosomes, cytosol, cytoplasm, and cell surface involved in cell adhesion and angiogenesis. PS-EVs protein content involved mitochondrial proteins and signalling molecules such as SQSTM1 and TGFβ1 pro-protein. Interestingly, PS-EVs contained no commonly determined cytokines, such as IL-6, IL-8, GRO-α, MCP-1, RANTES, and GM-CSF, which indicates that secretion of these cytokines is not predominantly mediated through PS-EVs. Nevertheless, the altered protein content of PS-EVs can still participate in the modulation of the fibroblast metabolism and phenotype as p21 was accumulated in fibroblasts influenced by EVs derived from CPD18-treated FaDu cells. The altered protein content of PS-EVs (data are available via ProteomeXchange with identifier PXD037164) also provides information about the cellular compartments and processes that are affected by the applied autophagy modulators. Video Abstract.
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Affiliation(s)
- Klara Hanelova
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Martina Raudenska
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
- Department of Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Monika Kratochvilova
- Department of Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Jiri Navratil
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Tomas Vicar
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
- Department of Biomedical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3058/10, Brno, Czech Republic
| | - Maria Bugajova
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Jaromir Gumulec
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Michal Masarik
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
- Department of Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
- First Faculty of Medicine, Charles University, Katerinska 32, 12108, Prague, Czech Republic
| | - Jan Balvan
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.
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Cheng J, Li L, Jin D, Dai Y, Zhu Y, Zou J, Liu M, Yu W, Yu J, Sun Y, Chen X, Liu Y. Boosting Ferroptosis Therapy with Iridium Single-Atom Nanocatalyst in Ultralow Metal Content. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2210037. [PMID: 36718883 DOI: 10.1002/adma.202210037] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/30/2022] [Indexed: 05/17/2023]
Abstract
Nanocatalysts are promising tumor therapeutics due to their ability to induce reactive oxygen species in the tumor microenvironment. Although increasing metal loading can improve catalytic activity, the quandary of high metal content versus potential systemic biotoxicity remains challenging. Here, a fully exposed active site strategy by site-specific anchoring of single iridium (Ir) atoms on the outer surface of a nitrogen-doped carbon composite (Ir single-atom catalyst (SAC)) is reported to achieve remarkable catalytic performance at ultralow metal content (≈0.11%). The Ir SAC exhibits prominent dual enzymatic activities to mimic peroxidase and glutathione peroxidase, which catalyzes the conversion of endogenous H2 O2 into •OH in the acidic TME and depletes glutathione (GSH) simultaneously. With an advanced support of GSH-trapping platinum(IV) and encapsulation with a red-blood-cell membrane, this nanocatalytic agent (Pt@IrSAC/RBC) causes intense lipid peroxidation that boosts tumor cell ferroptosis. The Pt@IrSAC/RBC demonstrates superior therapeutic efficacy in a mouse triple-negative mammary carcinoma model, resulting in complete tumor ablation in a single treatment session with negligible side effects. These outcomes may provide valuable insights into the design of nanocatalysts with high performance and biosafety for biomedical applications.
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Affiliation(s)
- Junjie Cheng
- Department of Chemistry Center for Bioanalytical Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Li Li
- Hefei National Research Center for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Duo Jin
- Department of Chemistry Center for Bioanalytical Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Yi Dai
- College of Pharmaceutical Sciences, Anhui Xinhua University, Hefei, 230001, P. R. China
| | - Yang Zhu
- Departments of Diagnostic Radiology, Surgery Chemical and Biomolecular Engineering and Biomedical Engineering, Yong Loo Lin School of Medicine and College of Design and Engineering, National University of Singapore, Singapore, 119074, Singapore
- Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117599, Singapore
- Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore, 138673, Singapore
| | - Jianhua Zou
- Departments of Diagnostic Radiology, Surgery Chemical and Biomolecular Engineering and Biomedical Engineering, Yong Loo Lin School of Medicine and College of Design and Engineering, National University of Singapore, Singapore, 119074, Singapore
- Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117599, Singapore
- Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore, 138673, Singapore
| | - Manman Liu
- Department of Chemistry Center for Bioanalytical Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Wenxin Yu
- Department of Chemistry Center for Bioanalytical Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Jiaji Yu
- Department of Chemistry Center for Bioanalytical Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Yongfu Sun
- Hefei National Research Center for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Xiaoyuan Chen
- Departments of Diagnostic Radiology, Surgery Chemical and Biomolecular Engineering and Biomedical Engineering, Yong Loo Lin School of Medicine and College of Design and Engineering, National University of Singapore, Singapore, 119074, Singapore
- Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117599, Singapore
- Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore, 138673, Singapore
| | - Yangzhong Liu
- Department of Chemistry Center for Bioanalytical Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
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Li H, Gong W, Sun W, Yao Y, Han Y. Role of VPS39, a key tethering protein for endolysosomal trafficking and mitochondria-lysosome crosstalk, in health and disease. J Cell Biochem 2023. [PMID: 36924104 DOI: 10.1002/jcb.30396] [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: 10/20/2022] [Revised: 01/12/2023] [Accepted: 02/28/2023] [Indexed: 03/18/2023]
Abstract
The coordinated interaction between mitochondria and lysosomes, mainly manifested by mitophagy, mitochondria-derived vesicles, and direct physical contact, is essential for maintaining cellular life activities. The VPS39 subunit of the homotypic fusion and protein sorting complex could play a key role in the regulation of organelle dynamics, such as endolysosomal trafficking and mitochondria-vacuole/lysosome crosstalk, thus contributing to a variety of physiological functions. The abnormalities of VPS39 and related subunits have been reported to be involved in the pathological process of some diseases. Here, we analyze the potential mechanisms and the existing problems of VPS39 in regulating organelle dynamics, which, in turn, regulate physiological functions and disease pathogenesis, so as to provide new clues for facilitating the discovery of therapeutic targets for mitochondrial and lysosomal diseases.
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Affiliation(s)
- Hanbing Li
- Institute of Pharmacology, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, China
| | - Wenwen Gong
- Institute of Pharmacology, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, China
| | - Weiyun Sun
- Institute of Pharmacology, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, China
| | - Yuanfa Yao
- Institute of Pharmacology, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, China
| | - Yubing Han
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China.,Britton Chance Center for Biomedical Photonics-MoE Key Laboratory for Biomedical Photonics, Advanced Biomedical Imaging Facility-Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China
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25
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Wang X, Wu R, Zhai P, Liu Z, Xia R, Zhang Z, Qin X, Li C, Chen W, Li J, Zhang J. Hypoxia promotes EV secretion by impairing lysosomal homeostasis in HNSCC through negative regulation of ATP6V1A by HIF-1α. J Extracell Vesicles 2023; 12:e12310. [PMID: 36748335 PMCID: PMC9903130 DOI: 10.1002/jev2.12310] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 01/04/2023] [Accepted: 01/26/2023] [Indexed: 02/08/2023] Open
Abstract
Tumour cells under hypoxia tend to modulate the number and contents of extracellular vesicles (EVs) to regulate the tumour microenvironment (TME) and thus promote tumour progression. However, the mechanism of how hypoxia influences the secretion of EVs remains to be elucidated. Here, we confirm the increased production of EVs in head and neck squamous cell carcinoma (HNSCC) cells under hypoxia, where endosome-derived EVs are the main subtype affected by insufficient O2 . The accumulation of hypoxia-inducible factor-1α (HIF-1α) under hypoxia directly downregulates the expression of ATP6V1A, which is pivotal to maintain the homeostasis of lysosomes. Subsequently, impaired lysosomal degradation contributes to the reduced fusion of multivesicular bodies (MVBs) with lysosomes and enables the secretion of intraluminal vesicles (ILVs) as EVs. These findings establish a HIF-1α-regulated lysosomal dysfunction-EV release axis and provide an exquisite framework to better understand EV biogenesis.
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Affiliation(s)
- Xiaoning Wang
- Department of Oral PathologyShanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiPRChina
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Ruoyi Wu
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Peisong Zhai
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Zheqi Liu
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Ronghui Xia
- Department of Oral PathologyShanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiPRChina
| | - Zhen Zhang
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Xing Qin
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Chuwen Li
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
| | - Wantao Chen
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of StomatologyNational Clinical Research Center of StomatologyShanghaiPRChina
| | - Jiang Li
- Department of Oral PathologyShanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiPRChina
| | - Jianjun Zhang
- Department of Oral and Maxillofacial‐Head and Neck OncologyNinth People's Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiPRChina
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Suzuki Y, Kami D, Taya T, Sano A, Ogata T, Matoba S, Gojo S. ZLN005 improves the survival of polymicrobial sepsis by increasing the bacterial killing via inducing lysosomal acidification and biogenesis in phagocytes. Front Immunol 2023; 14:1089905. [PMID: 36820088 PMCID: PMC9938763 DOI: 10.3389/fimmu.2023.1089905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 01/23/2023] [Indexed: 02/07/2023] Open
Abstract
Polymicrobial sepsis still has a high mortality rate despite the development of antimicrobial agents, elaborate strategies to protect major organs, and the investment of numerous medical resources. Mitochondrial dysfunction, which acts as the center of energy metabolism, is clearly the basis of pathogenesis. Drugs that act on PGC1α, the master regulator of mitochondrial biosynthesis, have shown useful effects in the treatment of sepsis; therefore, we investigated the efficacy of ZLN005, a PGC1α agonist, and found significant improvement in overall survival in an animal model. The mode of action of this effect was examined, and it was shown that the respiratory capacity of mitochondria was enhanced immediately after administration and that the function of TFEB, a transcriptional regulator that promotes lysosome biosynthesis and mutually enhances PGC1α, was enhanced, as was the physical contact between mitochondria and lysosomes. ZLN005 strongly supported immune defense in early sepsis by increasing lysosome volume and acidity and enhancing cargo degradation, resulting in a significant reduction in bacterial load. ZLN005 rapidly acted on two organelles, mitochondria and lysosomes, against sepsis and interactively linked the two to improve the pathogenesis. This is the first demonstration that acidification of lysosomes by a small molecule is a mechanism of action in the therapeutic strategy for sepsis, which will have a significant impact on future drug discovery.
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Affiliation(s)
- Yosuke Suzuki
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Daisuke Kami
- Department of Regenerative Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Toshihiko Taya
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Arata Sano
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takehiro Ogata
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Pathology and Cell Regulation, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Satoaki Matoba
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Satoshi Gojo
- Department of Regenerative Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Zhang Y, Zhang M, Xie Z, Ding Y, Huang J, Yao J, Lv Y, Zuo J. Research Progress and Direction of Novel Organelle-Migrasomes. Cancers (Basel) 2022; 15:cancers15010134. [PMID: 36612129 PMCID: PMC9817827 DOI: 10.3390/cancers15010134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/17/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
Migrasomes are organelles that are similar in structure to pomegranates, up to 3 μm in diameter, and contain small vesicles with a diameter of 50-100 nm. These membranous organelles grow at the intersections or tips of retracting fibers at the back of migrating cells. The process by which cells release migrasomes and their contents outside the cell is called migracytosis. The signal molecules are packaged in the migrasomes and released to the designated location by migrasomes to activate the surrounding cells. Finally, the migrasomes complete the entire process of information transmission. In this sense, migrasomes integrate time, space, and specific chemical information, which are essential for regulating physiological processes such as embryonic development and tumor invasion and migration. In this review, the current research progress of migrasomes, including the discovery of migrasomes and migracytosis, the structure of migrasomes, and the distribution and functions of migrasomes is discussed. The migratory marker protein TSPAN4 is highly expressed in various cancers and is associated with cancer invasion and migration. Therefore, there is still much research space for the pathogenesis of migratory bodies and cancer. This review also makes bold predictions and prospects for the research directions of the combination of migrasomes and clinical applications.
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Affiliation(s)
- Yu Zhang
- The Laboratory of Translational Medicine, Hengyang Medical School, University of South China, 28 Changsheng Road, Hengyang 421001, China
| | - Minghui Zhang
- The Laboratory of Translational Medicine, Hengyang Medical School, University of South China, 28 Changsheng Road, Hengyang 421001, China
| | - Zhuoyi Xie
- The Laboratory of Translational Medicine, Hengyang Medical School, University of South China, 28 Changsheng Road, Hengyang 421001, China
| | - Yubo Ding
- Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang 421002, China
| | - Jialu Huang
- The Laboratory of Translational Medicine, Hengyang Medical School, University of South China, 28 Changsheng Road, Hengyang 421001, China
| | - Jingwei Yao
- Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang 421002, China
| | - Yufan Lv
- Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang 421002, China
| | - Jianhong Zuo
- The Laboratory of Translational Medicine, Hengyang Medical School, University of South China, 28 Changsheng Road, Hengyang 421001, China
- Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang 421002, China
- Clinical Laboratory, The Third Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421900, China
- Correspondence:
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28
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Chen X, Ma L, Zhao J, Pan X, Chen S. Effect of empagliflozin on cytoskeletal repair in the hippocampus of obese mice. Front Neurosci 2022; 16:1000839. [PMID: 36408417 PMCID: PMC9667058 DOI: 10.3389/fnins.2022.1000839] [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: 07/22/2022] [Accepted: 09/22/2022] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVE We aimed to investigate the effect of empagliflozin on hippocampal phosphorylated protein levels in obese mice. MATERIALS AND METHODS Sixteen obese mice successfully modeled on high-fat diet were randomly divided into high-fat feeding group (group H) and empagliflozin group (group H + empagliflozin, group E), eight mice in each group, and eight C57BL/6J male normal mice were selected as the control group (normal control, group C). Group E was treated with empagliflozin 10 mg/kg/d for 12 weeks, while mice in groups H and C were treated with equal amounts of saline. The spatial learning memory ability of the mice was determined by the Morris water maze experiment. Further, their body weights and serological indices were measured. Finally, total proteins were extracted from hippocampal tissues for functional analysis by the phosphorylated proteomics method. RESULTS The results showed that escape latency was prolonged, retention time in the target quadrant was shortened, and the number of loop penetrations was reduced in the obese mice induced by a high-calorie diet compared with normal controls, whereas escape latency was shortened, retention time in the target quadrant was increased, and the number of loop penetrations was increased after empagliflozin treatment. Phosphoproteomics in the high-fat/control (H/C), empagliflozin/high-fat (E/H), and E/C groups showed 844, 1,552, and 1,512 differentially significant phosphorylation sites, respectively. The proteins corresponding to these differentially phosphorylated sites were mainly involved in neurodegenerative pathways and actin cytoskeleton regulation. Notably, myosin heavy chain 10 (MYH10), p21 protein-activated kinase 4 (PAK4), phosphatidylinositol 3 -phosphate 5-kinase (PIKfyve), and other differentially phosphorylated proteins were involved in actin cytoskeleton regulation. CONCLUSION We concluded that empagliflozin protects cognitive functions by inducing serine phosphorylation in MYH10, PAK4, and PIKfyve in the hippocampal tissue of obese mice.
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Affiliation(s)
- Xiaoyi Chen
- Graduate School of Hebei North University, Zhangjiakou, China,Department of Endocrinology, Hebei General Hospital, Shijiazhuang, China
| | - Liang Ma
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China
| | - Jingyu Zhao
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China,Graduate School of North China University of Science and Technology, Tangshan, China
| | - Xiaoyu Pan
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, China
| | - Shuchun Chen
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, China,*Correspondence: Shuchun Chen,
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OMA1-mediated integrated stress response protects against ferroptosis in mitochondrial cardiomyopathy. Cell Metab 2022; 34:1875-1891.e7. [PMID: 36113464 DOI: 10.1016/j.cmet.2022.08.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 06/24/2022] [Accepted: 08/19/2022] [Indexed: 01/11/2023]
Abstract
Cardiomyopathy and heart failure are common manifestations in mitochondrial disease caused by deficiencies in the oxidative phosphorylation (OXPHOS) system of mitochondria. Here, we demonstrate that the cardiac-specific loss of the assembly factor Cox10 of the cytochrome c oxidase causes mitochondrial cardiomyopathy in mice, which is associated with OXPHOS deficiency, lysosomal defects, and an aberrant mitochondrial morphology. Activation of the mitochondrial peptidase Oma1 in Cox10-/- mice results in mitochondrial fragmentation and induction of the integrated stress response (ISR) along the Oma1-Dele1-Atf4 signaling axis. Ablation of Oma1 or Dele1 in Cox10-/- mice aggravates cardiomyopathy. ISR inhibition impairs the cardiac glutathione metabolism, limits the selenium-dependent accumulation of the glutathione peroxidase Gpx4, and increases lipid peroxidation in the heart, ultimately culminating in ferroptosis. Our results demonstrate a protective role of the Oma1-Dele1-mediated ISR in mitochondrial cardiomyopathy and link ferroptosis to OXPHOS deficiency and mitochondrial disease.
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Deus CM, Teixeira J, Raimundo N, Tucci P, Borges F, Saso L, Oliveira PJ. Modulation of cellular redox environment as a novel therapeutic strategy for Parkinson's disease. Eur J Clin Invest 2022; 52:e13820. [PMID: 35638352 DOI: 10.1111/eci.13820] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/25/2022] [Accepted: 05/29/2022] [Indexed: 12/01/2022]
Abstract
Parkinson's disease (PD) is an incurable neurodegenerative movement disorder. PD affects 2% of the population above 65 years old; however, with the growing number of senior citizens, PD prevalence is predicted to increase in the following years. Pathologically, PD is characterized by dopaminergic cell neurodegeneration in the substantia nigra, resulting in decreased dopamine levels in the nigrostriatal pathway, triggering motor symptoms. Although the pathological mechanisms leading to PD are still unclear, large evidence indicates that oxidative stress plays an important role, not only because it increases with age which is the most significant risk factor for PD development, but also as a result of alterations in several processes, particularly mitochondria dysfunction. The modulation of oxidative stress, especially using dietary mitochondriotropic antioxidants, represents a promising approach to prevent or treat PD. Although most mitochondria-targeted antioxidants with beneficial effects in PD-associated models have failed to show any therapeutic benefit in clinical trials, several questions remain to be clarified. Hereby, we review the role played by oxidative stress in PD pathogenesis, emphasizing mitochondria as reactive oxygen species (ROS) producers and as targets for oxidative stress-related dysfunctional mechanisms. In addition, we also describe the importance of using dietary-based mitochondria-targeted antioxidants as a valuable strategy to counteract the deleterious effects of ROS in pre-clinical and/or clinical trials of PD, pointing out their significance to slow, and possibly halt, the progression of PD.
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Affiliation(s)
- Cláudia M Deus
- CNC - Center for Neuroscience and Cell Biology, CIBB - Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.,PhD Programme in Experimental Biology and Biomedicine (PDBEB), Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra, Portugal
| | - José Teixeira
- CNC - Center for Neuroscience and Cell Biology, CIBB - Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
| | - Nuno Raimundo
- Department of Cellular and Molecular Physiology, Penn State University College of Medicine, Hershey, Pennsylvania, USA.,Multidisciplinary Institute of Ageing (MIA), University of Coimbra, Coimbra, Portugal
| | - Paolo Tucci
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Fernanda Borges
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, Roma, Italy
| | - Paulo J Oliveira
- CNC - Center for Neuroscience and Cell Biology, CIBB - Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.,PhD Programme in Experimental Biology and Biomedicine (PDBEB), Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra, Portugal
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31
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Guha S, Cheng A, Carroll T, King D, Koren SA, Swords S, Nehrke K, Johnson GVW. Selective disruption of Drp1-independent mitophagy and mitolysosome trafficking by an Alzheimer's disease relevant tau modification in a novel Caenorhabditis elegans model. Genetics 2022; 222:iyac104. [PMID: 35916724 PMCID: PMC9434186 DOI: 10.1093/genetics/iyac104] [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: 02/25/2022] [Accepted: 07/06/2022] [Indexed: 11/14/2022] Open
Abstract
Accumulation of inappropriately phosphorylated tau into neurofibrillary tangles is a defining feature of Alzheimer's disease, with Tau pT231 being an early harbinger of tau pathology. Previously, we demonstrated that expressing a single genomic copy of human phosphomimetic mutant tau (T231E) in Caenorhabditis elegans drove age-dependent neurodegeneration. A critical finding was that T231E, unlike wild-type tau, completely and selectively suppressed oxidative stress-induced mitophagy. Here, we used dynamic imaging approaches to analyze T231E-associated changes in mitochondria and mitolysosome morphology, abundance, trafficking, and stress-induced mitophagy as a function of mitochondrial fission mediator dynamin-related protein 1, which has been demonstrated to interact with hyper phosphorylated tau and contribute to Alzheimer's disease pathogenesis, as well as Pink1, a well-recognized mediator of mitochondrial quality control that works together with Parkin to support stress-induced mitophagy. T231E impacted both mitophagy and mitolysosome neurite trafficking with exquisite selectivity, sparing macroautophagy as well as lysosome and autolysosome trafficking. Both oxidative-stress-induced mitophagy and the ability of T231E to suppress it were independent of drp-1, but at least partially dependent on pink-1. Organelle trafficking was more complicated, with drp-1 and pink-1 mutants exerting independent effects, but generally supported the idea that the mitophagy phenotype is of greater physiologic impact in T231E. Collectively, our results refine the mechanistic pathway through which T231E causes neurodegeneration, demonstrating pathologic selectivity for mutations that mimic tauopathy-associated post-translational modifications, physiologic selectivity for organelles that contain damaged mitochondria, and molecular selectivity for dynamin-related protein 1-independent, Pink1-dependent, perhaps adaptive, and mitophagy.
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Affiliation(s)
- Sanjib Guha
- Department of Anesthesiology & Perioperative Medicine, University of Rochester, Rochester, NY 14642, USA
| | - Anson Cheng
- Department of Anesthesiology & Perioperative Medicine, University of Rochester, Rochester, NY 14642, USA
| | - Trae Carroll
- Department of Pathology and Laboratory Medicine, University of Rochester, Rochester, NY 14642, USA
| | - Dennisha King
- Department of Neuroscience, University of Rochester, Rochester, NY 14642, USA
| | - Shon A Koren
- Department of Anesthesiology & Perioperative Medicine, University of Rochester, Rochester, NY 14642, USA
| | - Sierra Swords
- Department of Molecular Biology and Biochemistry, Rutgers University, New Brunswick, NJ 08901, USA
| | - Keith Nehrke
- Department of Medicine, Nephrology Division, University of Rochester, Rochester, NY 14642, USA
| | - Gail V W Johnson
- Department of Anesthesiology & Perioperative Medicine, University of Rochester, Rochester, NY 14642, USA
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32
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Lippi A, Krisko A. CORE at the boundary of stress resistance and longevity. Int J Biochem Cell Biol 2022; 151:106277. [PMID: 35995386 DOI: 10.1016/j.biocel.2022.106277] [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: 06/09/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 10/15/2022]
Abstract
As chronological age of an organism increases, a number of errors accumulate at different levels of biological organization. The tendency of errors to accumulate and cause downstream problems in maintenance of cellular homeostasis is met by numerous protection and repair mechanisms. Maintenance of proteins is vital for cell viability and longevity, thus cellular proteostasis is supported by chaperone networks in every cellular compartment, as well as other pathways ensuring timely chaperone expression and activity. In this minireview, we summarize the progress related to the cross-organelle stress response (CORE), in charge of orchestrating a cell-wide response to compartmentalized proteotoxicity. The proposed CORE pathway encompasses activation of protein conformational maintenance machineries, antioxidant enzymes and metabolic changes simultaneously in the cytosol, mitochondria and the ER. We discuss its importance in cell survival and longevity as well as its potential to serve as a pharmaceutical target in age-related diseases.
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Affiliation(s)
- Alice Lippi
- Department of Experimental Neurodegeneration, University Medical Center Goettingen, Waldweg 33, 37075 Goettingen, Germany
| | - Anita Krisko
- Department of Experimental Neurodegeneration, University Medical Center Goettingen, Waldweg 33, 37075 Goettingen, Germany.
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33
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Urra FA, Vivas-Ruiz DE, Sanchez EF, Araya-Maturana R. An Emergent Role for Mitochondrial Bioenergetics in the Action of Snake Venom Toxins on Cancer Cells. Front Oncol 2022; 12:938749. [PMID: 35924151 PMCID: PMC9343075 DOI: 10.3389/fonc.2022.938749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Accepted: 06/14/2022] [Indexed: 01/09/2023] Open
Abstract
Beyond the role of mitochondria in apoptosis initiation/execution, some mitochondrial adaptations support the metastasis and chemoresistance of cancer cells. This highlights mitochondria as a promising target for new anticancer strategies. Emergent evidence suggests that some snake venom toxins, both proteins with enzymatic and non-enzymatic activities, act on the mitochondrial metabolism of cancer cells, exhibiting unique and novel mechanisms that are not yet fully understood. Currently, six toxin classes (L-amino acid oxidases, thrombin-like enzymes, secreted phospholipases A2, three-finger toxins, cysteine-rich secreted proteins, and snake C-type lectin) that alter the mitochondrial bioenergetics have been described. These toxins act through Complex IV activity inhibition, OXPHOS uncoupling, ROS-mediated permeabilization of inner mitochondrial membrane (IMM), IMM reorganization by cardiolipin interaction, and mitochondrial fragmentation with selective migrastatic and cytotoxic effects on cancer cells. Notably, selective internalization and direct action of snake venom toxins on tumor mitochondria can be mediated by cell surface proteins overexpressed in cancer cells (e.g. nucleolin and heparan sulfate proteoglycans) or facilitated by the elevated Δψm of cancer cells compared to that non-tumor cells. In this latter case, selective mitochondrial accumulation, in a Δψm-dependent manner, of compounds linked to cationic snake peptides may be explored as a new anti-cancer drug delivery system. This review analyzes the effect of snake venom toxins on mitochondrial bioenergetics of cancer cells, whose mechanisms of action may offer the opportunity to develop new anticancer drugs based on toxin scaffolds.
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Affiliation(s)
- Félix A. Urra
- Laboratorio de Plasticidad Metabólica y Bioenergética, Programa de Farmacología Clínica y Molecular, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Network for Snake Venom Research and Drug Discovery, Santiago, Chile
- Interdisciplinary Group on Mitochondrial Targeting and Bioenergetics (MIBI), Talca, Chile
- *Correspondence: Félix A. Urra,
| | - Dan E. Vivas-Ruiz
- Network for Snake Venom Research and Drug Discovery, Santiago, Chile
- Laboratorio de Biología Molecular, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Ciudad Universitaria, Lima, Peru
| | - Eladio Flores Sanchez
- Network for Snake Venom Research and Drug Discovery, Santiago, Chile
- Laboratory of Biochemistry of Proteins from Animal Venoms, Research and Development Center, Ezequiel Dias Foundation, Belo Horizonte, Brazil
| | - Ramiro Araya-Maturana
- Network for Snake Venom Research and Drug Discovery, Santiago, Chile
- Interdisciplinary Group on Mitochondrial Targeting and Bioenergetics (MIBI), Talca, Chile
- Laboratorio de Productos Bioactivos, Instituto de Química de Recursos Naturales, Universidad de Talca, Talca, Chile
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Lang M, Pramstaller PP, Pichler I. Crosstalk of organelles in Parkinson's disease - MiT family transcription factors as central players in signaling pathways connecting mitochondria and lysosomes. Mol Neurodegener 2022; 17:50. [PMID: 35842725 PMCID: PMC9288732 DOI: 10.1186/s13024-022-00555-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 07/01/2022] [Indexed: 11/10/2022] Open
Abstract
Living organisms constantly need to adapt to their surrounding environment and have evolved sophisticated mechanisms to deal with stress. Mitochondria and lysosomes are central organelles in the response to energy and nutrient availability within a cell and act through interconnected mechanisms. However, when such processes become overwhelmed, it can lead to pathologies. Parkinson's disease (PD) is a common neurodegenerative disorder (NDD) characterized by proteinaceous intracellular inclusions and progressive loss of dopaminergic neurons, which causes motor and non-motor symptoms. Genetic and environmental factors may contribute to the disease etiology. Mitochondrial dysfunction has long been recognized as a hallmark of PD pathogenesis, and several aspects of mitochondrial biology are impaired in PD patients and models. In addition, defects of the autophagy-lysosomal pathway have extensively been observed in cell and animal models as well as PD patients' brains, where constitutive autophagy is indispensable for adaptation to stress and energy deficiency. Genetic and molecular studies have shown that the functions of mitochondria and lysosomal compartments are tightly linked and influence each other. Connections between these organelles are constituted among others by mitophagy, organellar dynamics and cellular signaling cascades, such as calcium (Ca2+) and mTOR (mammalian target of rapamycin) signaling and the activation of transcription factors. Members of the Microphthalmia-associated transcription factor family (MiT), including MITF, TFE3 and TFEB, play a central role in regulating cellular homeostasis in response to metabolic pressure and are considered master regulators of lysosomal biogenesis. As such, they are part of the interconnection between mitochondria and lysosome functions and therefore represent attractive targets for therapeutic approaches against NDD, including PD. The activation of MiT transcription factors through genetic and pharmacological approaches have shown encouraging results at ameliorating PD-related phenotypes in in vitro and in vivo models. In this review, we summarize the relationship between mitochondrial and autophagy-lysosomal functions in the context of PD etiology and focus on the role of the MiT pathway and its potential as pharmacological target against PD.
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Affiliation(s)
- Martin Lang
- Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy.
| | - Peter P Pramstaller
- Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy.,Department of Neurology, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Irene Pichler
- Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy
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35
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Zou Y, Chen X, Sun Y, Li P, Xu M, Fang P, Zhang S, Yuan G, Deng X, Hu H. Antibiotics-free nanoparticles eradicate Helicobacter pylori biofilms and intracellular bacteria. J Control Release 2022; 348:370-385. [PMID: 35662575 DOI: 10.1016/j.jconrel.2022.05.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/19/2022] [Accepted: 05/25/2022] [Indexed: 02/07/2023]
Abstract
Biofilms and intracellular survival tremendously help Helicobacter pylori (H. pylori) escape from antibacterial agents attacking, therefore issuing extreme challenges to clinical therapies. Herein, we constructed fucoidan (FU)-coated nanoparticles (FU/ML-LA/EB NPs) via simple self-assembly of biguanide derivative (metformin-linoleic acid, ML) and linoleic acid (LA), encapsulating urease inhibitor ebselen (EB) instead of antibiotics to take antibacterial effect. Negatively charged FU/ML-LA/EB NPs easily penetrated through the gastric mucus layer to arrive at infection sites, then eradicated extracellular polymeric substances (EPS) to destroy H. pylori biofilms structure. After strengthening bacterial membrane permeability, the nanoparticles could enter H. pylori and kill bacteria by inhibiting the activity of urease. FU/ML-LA/EB NPs also entered H. pylori-infected host cells through receptor-mediated internalization, in which they activated AMPK to recover lysosomal acidification for killing intracellular H. pylori. Additionally, FU/ML-LA/EB NPs alleviated oxidative stress, hence reducing gastric mucosal damage and cutting off the pathways of carcinogenesis. Notably, H. pylori burden after FU/ML-LA/EB NPs treatment was reduced to a great extent in vivo, which was significantly lower than that after treatment with clinical therapy. Antibiotics-free FU/ML-LA/EB NPs improving bacterial eradication and alleviating oxidation stress made it a powerful approach against H. pylori.
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Affiliation(s)
- Yiqing Zou
- Lab of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Xiaonan Chen
- Lab of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Yingying Sun
- Lab of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Pengyu Li
- Lab of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Mao Xu
- Lab of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Pengchao Fang
- Lab of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Shuqi Zhang
- Lab of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China
| | - Gang Yuan
- Department of Geriatrics, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Xin Deng
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong SAR 999077, China
| | - Haiyan Hu
- Lab of Pharmaceutics, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, Guangzhou 510006, PR China.
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36
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Maglioni S, Schiavi A, Melcher M, Brinkmann V, Luo Z, Laromaine A, Raimundo N, Meyer JN, Distelmaier F, Ventura N. Neuroligin-mediated neurodevelopmental defects are induced by mitochondrial dysfunction and prevented by lutein in C. elegans. Nat Commun 2022; 13:2620. [PMID: 35551180 PMCID: PMC9098500 DOI: 10.1038/s41467-022-29972-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 04/09/2022] [Indexed: 12/02/2022] Open
Abstract
Complex-I-deficiency represents the most frequent pathogenetic cause of human mitochondriopathies. Therapeutic options for these neurodevelopmental life-threating disorders do not exist, partly due to the scarcity of appropriate model systems to study them. Caenorhabditis elegans is a genetically tractable model organism widely used to investigate neuronal pathologies. Here, we generate C. elegans models for mitochondriopathies and show that depletion of complex I subunits recapitulates biochemical, cellular and neurodevelopmental aspects of the human diseases. We exploit two models, nuo-5/NDUFS1- and lpd-5/NDUFS4-depleted animals, for a suppressor screening that identifies lutein for its ability to rescue animals’ neurodevelopmental deficits. We uncover overexpression of synaptic neuroligin as an evolutionarily conserved consequence of mitochondrial dysfunction, which we find to mediate an early cholinergic defect in C. elegans. We show lutein exerts its beneficial effects by restoring neuroligin expression independently from its antioxidant activity, thus pointing to a possible novel pathogenetic target for the human disease. Mitochondrial deficiency causes rare incurable disorders. Here, the authors use C. elegans to study these diseases and find that the natural compound lutein prevents neurodevelopmental deficits, thus pointing to a possible therapeutic target for the human diseases.
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Affiliation(s)
- Silvia Maglioni
- IUF-Leibniz Research Institute for Environmental Medicine, 40225, Duesseldorf, Germany
| | - Alfonso Schiavi
- IUF-Leibniz Research Institute for Environmental Medicine, 40225, Duesseldorf, Germany.,Institute for Clinical Chemistry and Laboratory Diagnostic, Medical Faculty, Heinrich Heine University, 40225, Duesseldorf, Germany
| | - Marlen Melcher
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Children's Hospital, Heinrich Heine University, 40225, Duesseldorf, Germany
| | - Vanessa Brinkmann
- IUF-Leibniz Research Institute for Environmental Medicine, 40225, Duesseldorf, Germany
| | - Zhongrui Luo
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC. Campus UAB, 08193, Bellaterra, Barcelona, Spain
| | - Anna Laromaine
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC. Campus UAB, 08193, Bellaterra, Barcelona, Spain
| | - Nuno Raimundo
- Department of Cellular and Molecular Physiology, Penn State College of Medicine, 500 University Drive, Hershey, 17033, USA
| | - Joel N Meyer
- Nicholas School of the Environment, Duke University, Durham, NC, 27708-0328, USA
| | - Felix Distelmaier
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Children's Hospital, Heinrich Heine University, 40225, Duesseldorf, Germany
| | - Natascia Ventura
- IUF-Leibniz Research Institute for Environmental Medicine, 40225, Duesseldorf, Germany. .,Institute for Clinical Chemistry and Laboratory Diagnostic, Medical Faculty, Heinrich Heine University, 40225, Duesseldorf, Germany.
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37
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Han Z, Ma K, Tao H, Liu H, Zhang J, Sai X, Li Y, Chi M, Nian Q, Song L, Liu C. A Deep Insight Into Regulatory T Cell Metabolism in Renal Disease: Facts and Perspectives. Front Immunol 2022; 13:826732. [PMID: 35251009 PMCID: PMC8892604 DOI: 10.3389/fimmu.2022.826732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/24/2022] [Indexed: 11/29/2022] Open
Abstract
Kidney disease encompasses a complex set of diseases that can aggravate or start systemic pathophysiological processes through their complex metabolic mechanisms and effects on body homoeostasis. The prevalence of kidney disease has increased dramatically over the last two decades. CD4+CD25+ regulatory T (Treg) cells that express the transcription factor forkhead box protein 3 (Foxp3) are critical for maintaining immune homeostasis and preventing autoimmune disease and tissue damage caused by excessive or unnecessary immune activation, including autoimmune kidney diseases. Recent studies have highlighted the critical role of metabolic reprogramming in controlling the plasticity, stability, and function of Treg cells. They are also likely to play a vital role in limiting kidney transplant rejection and potentially promoting transplant tolerance. Metabolic pathways, such as mitochondrial function, glycolysis, lipid synthesis, glutaminolysis, and mammalian target of rapamycin (mTOR) activation, are involved in the development of renal diseases by modulating the function and proliferation of Treg cells. Targeting metabolic pathways to alter Treg cells can offer a promising method for renal disease therapy. In this review, we provide a new perspective on the role of Treg cell metabolism in renal diseases by presenting the renal microenvironment、relevant metabolites of Treg cell metabolism, and the role of Treg cell metabolism in various kidney diseases.
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Affiliation(s)
- Zhongyu Han
- Department of Nephrology, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Sichuan Renal Disease Clinical Research Center, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China.,Reproductive & Women-Children Hospital, School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Kuai Ma
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hongxia Tao
- Reproductive & Women-Children Hospital, School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hongli Liu
- Reproductive & Women-Children Hospital, School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jiong Zhang
- Department of Nephrology, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Sichuan Renal Disease Clinical Research Center, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Xiyalatu Sai
- Affiliated Hospital of Inner Mongolia University for the Nationalities, Tongliao, China
| | - Yunlong Li
- Reproductive & Women-Children Hospital, School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Mingxuan Chi
- Department of Nephrology, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Sichuan Renal Disease Clinical Research Center, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Qing Nian
- Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China.,Department of Blood Transfusion Sicuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Linjiang Song
- Reproductive & Women-Children Hospital, School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chi Liu
- Department of Nephrology, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Sichuan Renal Disease Clinical Research Center, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
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38
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Irazoki A, Martinez‐Vicente M, Aparicio P, Aris C, Alibakhshi E, Rubio‐Valera M, Castellanos J, Lores L, Palacín M, Gumà A, Zorzano A, Sebastián D. Coordination of mitochondrial and lysosomal homeostasis mitigates inflammation and muscle atrophy during aging. Aging Cell 2022; 21:e13583. [PMID: 35263007 PMCID: PMC9009131 DOI: 10.1111/acel.13583] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 02/01/2022] [Accepted: 02/21/2022] [Indexed: 12/25/2022] Open
Abstract
Sarcopenia is one of the main factors contributing to the disability of aged people. Among the possible molecular determinants of sarcopenia, increasing evidences suggest that chronic inflammation contributes to its development. However, a key unresolved question is the nature of the factors that drive inflammation during aging and that participate in the development of sarcopenia. In this regard, mitochondrial dysfunction and alterations in mitophagy induce inflammatory responses in a wide range of cells and tissues. However, whether accumulation of damaged mitochondria (MIT) in muscle could trigger inflammation in the context of aging is still unknown. Here, we demonstrate that BCL2 interacting protein 3 (BNIP3) plays a key role in the control of mitochondrial and lysosomal homeostasis, and mitigates muscle inflammation and atrophy during aging. We show that muscle BNIP3 expression increases during aging in mice and in some humans. BNIP3 deficiency alters mitochondrial function, decreases mitophagic flux and, surprisingly, induces lysosomal dysfunction, leading to an upregulation of Toll‐like receptor 9 (TLR9)‐dependent inflammation and activation of the NLRP3 (nucleotide‐binding oligomerization domain (NOD)‐, leucine‐rich repeat (LRR)‐, and pyrin domain‐containing protein 3) inflammasome in muscle cells and mouse muscle. Importantly, downregulation of muscle BNIP3 in aged mice exacerbates inflammation and muscle atrophy, and high BNIP3 expression in aged human subjects associates with a low inflammatory profile, suggesting a protective role for BNIP3 against age‐induced muscle inflammation in mice and humans. Taken together, our data allow us to propose a new adaptive mechanism involving the mitophagy protein BNIP3, which links mitochondrial and lysosomal homeostasis with inflammation and is key to maintaining muscle health during aging.
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Affiliation(s)
- Andrea Irazoki
- Institute for Research in Biomedicine (IRB Barcelona) The Barcelona Institute of Science and Technology Barcelona Spain
- Departament de Bioquímica i Biomedicina Molecular Facultat de Biologia Universitat de Barcelona Barcelona Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM) Instituto de Salud Carlos III Barcelona Spain
| | - Marta Martinez‐Vicente
- Neurodegenerative Diseases Research Group Vall d’Hebron Research Institute‐Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED) Barcelona Spain
| | - Pilar Aparicio
- Department of Orthopedic Surgery and Traumatology Hospital General Parc Sanitari Sant Joan de Déu Sant Boi de Llobregat, Barcelona Spain
| | - Cecilia Aris
- Department of Family and Community Medicine Hospital General Parc Sanitari Sant Joan de Déu Sant Boi de Llobregat, Barcelona Spain
| | - Esmaeil Alibakhshi
- Pneumology Department Hospital General Parc Sanitari Sant Joan de Déu Sant Boi de Llobregat, Barcelona Spain
- Physical Medicine and Rehabilitation Department Clinical Research Development Unite Baqyiatallah Hospital, Faculty of Medicine Baqyiatallah University of Medical Science Tehran Iran
- Quantitative MR Imaging and Spectroscopy Group Research Center for Molecular and Cellular Imaging Advanced Medical Technologies and Equipment Institute Tehran University of Medical Science Tehran Iran
| | - Maria Rubio‐Valera
- Hospital General Parc Sanitari Sant Joan de Déu Sant Boi de Llobregat, Barcelona Spain
- The Biomedical Research Centre Network for Epidemiology and Public Health (CIBERESP) Madrid Spain
| | - Juan Castellanos
- Department of Orthopedic Surgery and Traumatology Hospital General Parc Sanitari Sant Joan de Déu Sant Boi de Llobregat, Barcelona Spain
| | - Luis Lores
- Pneumology Department Hospital General Parc Sanitari Sant Joan de Déu Sant Boi de Llobregat, Barcelona Spain
| | - Manuel Palacín
- Institute for Research in Biomedicine (IRB Barcelona) The Barcelona Institute of Science and Technology Barcelona Spain
- Departament de Bioquímica i Biomedicina Molecular Facultat de Biologia Universitat de Barcelona Barcelona Spain
- CIBER de Enfermedades Raras (CIBERER) Instituto de Salud Carlos III Madrid Spain
| | - Anna Gumà
- Departament de Bioquímica i Biomedicina Molecular Facultat de Biologia Universitat de Barcelona Barcelona Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM) Instituto de Salud Carlos III Barcelona Spain
- Institute of Biomedicine of the University of Barcelona (IBUB) Barcelona Spain
| | - Antonio Zorzano
- Institute for Research in Biomedicine (IRB Barcelona) The Barcelona Institute of Science and Technology Barcelona Spain
- Departament de Bioquímica i Biomedicina Molecular Facultat de Biologia Universitat de Barcelona Barcelona Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM) Instituto de Salud Carlos III Barcelona Spain
| | - David Sebastián
- Institute for Research in Biomedicine (IRB Barcelona) The Barcelona Institute of Science and Technology Barcelona Spain
- Departament de Bioquímica i Biomedicina Molecular Facultat de Biologia Universitat de Barcelona Barcelona Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM) Instituto de Salud Carlos III Barcelona Spain
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39
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McCarty MF. Nutraceutical and Dietary Strategies for Up-Regulating Macroautophagy. Int J Mol Sci 2022; 23:ijms23042054. [PMID: 35216170 PMCID: PMC8875972 DOI: 10.3390/ijms23042054] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 12/04/2022] Open
Abstract
Macroautophagy is a “cell cleansing” process that rids cells of protein aggregates and damaged organelles that may contribute to disease pathogenesis and the dysfunctions associated with aging. Measures which boost longevity and health span in rodents typically up-regulate macroautophagy, and it has often been suggested that safe strategies which can promote this process in humans may contribute to healthful aging. The kinase ULK1 serves as a trigger for autophagy initiation, and the transcription factors TFEB, FOXO1, ATF4 and CHOP promote expression of a number of proteins which mediate macroautophagy. Nutraceutical or dietary measures which stimulate AMPK, SIRT1, eIF5A, and that diminish the activities of AKT and mTORC1, can be expected to boost the activities of these pro-autophagic factors. The activity of AMPK can be stimulated with the phytochemical berberine. SIRT1 activation may be achieved with a range of agents, including ferulic acid, melatonin, urolithin A, N1-methylnicotinamide, nicotinamide riboside, and glucosamine; correction of ubiquinone deficiency may also be useful in this regard, as may dietary strategies such as time-restricted feeding or intermittent fasting. In the context of an age-related decrease in cellular polyamine levels, provision of exogenous spermidine can boost the hypusination reaction required for the appropriate post-translational modification of eIF5A. Low-protein plant-based diets could be expected to increase ATF4 and CHOP expression, while diminishing IGF-I-mediated activation of AKT and mTORC1. Hence, practical strategies for protecting health by up-regulating macroautophagy may be feasible.
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Affiliation(s)
- Mark F McCarty
- Catalytic Longevity Foundation, San Diego, CA 92109, USA
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40
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Mito T, Vincent AE, Faitg J, Taylor RW, Khan NA, McWilliams TG, Suomalainen A. Mosaic dysfunction of mitophagy in mitochondrial muscle disease. Cell Metab 2022; 34:197-208.e5. [PMID: 35030325 PMCID: PMC8815775 DOI: 10.1016/j.cmet.2021.12.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 10/12/2021] [Accepted: 12/17/2021] [Indexed: 01/07/2023]
Abstract
Mitophagy is a quality control mechanism that eliminates damaged mitochondria, yet its significance in mammalian pathophysiology and aging has remained unclear. Here, we report that mitophagy contributes to mitochondrial dysfunction in skeletal muscle of aged mice and human patients. The early disease stage is characterized by muscle fibers with central nuclei, with enhanced mitophagy around these nuclei. However, progressive mitochondrial dysfunction halts mitophagy and disrupts lysosomal homeostasis. Interestingly, activated or halted mitophagy occur in a mosaic manner even in adjacent muscle fibers, indicating cell-autonomous regulation. Rapamycin restores mitochondrial turnover, indicating mTOR-dependence of mitochondrial recycling in advanced disease stage. Our evidence suggests that (1) mitophagy is a hallmark of age-related mitochondrial pathology in mammalian muscle, (2) mosaic halting of mitophagy is a mechanism explaining mosaic respiratory chain deficiency and accumulation of pathogenic mtDNA variants in adult-onset mitochondrial diseases and normal aging, and (3) augmenting mitophagy is a promising therapeutic approach for muscle mitochondrial dysfunction.
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Affiliation(s)
- Takayuki Mito
- Research Program of Stem Cells and Metabolism, Faculty of Medicine, Biomedicum Helsinki, University of Helsinki, 00290 Helsinki, Finland
| | - Amy E Vincent
- Wellcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Julie Faitg
- Wellcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Robert W Taylor
- Wellcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK; NHS Highly Specialised Service for Rare Mitochondrial Disorders, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne NE2 4HH, UK
| | - Nahid A Khan
- Research Program of Stem Cells and Metabolism, Faculty of Medicine, Biomedicum Helsinki, University of Helsinki, 00290 Helsinki, Finland
| | - Thomas G McWilliams
- Research Program of Stem Cells and Metabolism, Faculty of Medicine, Biomedicum Helsinki, University of Helsinki, 00290 Helsinki, Finland; Department of Anatomy, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland
| | - Anu Suomalainen
- Research Program of Stem Cells and Metabolism, Faculty of Medicine, Biomedicum Helsinki, University of Helsinki, 00290 Helsinki, Finland; Helsinki University Hospital, HUSlab, 00290 Helsinki, Finland.
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41
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Linders PTA, Ioannidis M, ter Beest M, van den Bogaart G. Fluorescence Lifetime Imaging of pH along the Secretory Pathway. ACS Chem Biol 2022; 17:240-251. [PMID: 35000377 PMCID: PMC8787756 DOI: 10.1021/acschembio.1c00907] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
![]()
Many cellular processes
are dependent on correct pH levels, and
this is especially important for the secretory pathway. Defects in
pH homeostasis in distinct organelles cause a wide range of diseases,
including disorders of glycosylation and lysosomal storage diseases.
Ratiometric imaging of the pH-sensitive mutant of green fluorescent
protein, pHLuorin, has allowed for targeted pH measurements in various
organelles, but the required sequential image acquisition is intrinsically
slow and therefore the temporal resolution is unsuitable to follow
the rapid transit of cargo between organelles. Therefore, we applied
fluorescence lifetime imaging microscopy (FLIM) to measure intraorganellar
pH with just a single excitation wavelength. We first validated this
method by confirming the pH in multiple compartments along the secretory
pathway and compared the pH values obtained by the FLIM-based measurements
with those obtained by conventional ratiometric imaging. Then, we
analyzed the dynamic pH changes within cells treated with Bafilomycin
A1, to block the vesicular ATPase, and Brefeldin A, to block endoplasmic
reticulum (ER)–Golgi trafficking. Finally, we followed the
pH changes of newly synthesized molecules of the inflammatory cytokine
tumor necrosis factor-α while they were in transit from the
ER via the Golgi to the plasma membrane. The toolbox we present here
can be applied to measure intracellular pH with high spatial and temporal
resolution and can be used to assess organellar pH in disease models.
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Affiliation(s)
- Peter T. A. Linders
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Melina Ioannidis
- Department of Molecular Immunology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747AG Groningen, Netherlands
| | - Martin ter Beest
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Geert van den Bogaart
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
- Department of Molecular Immunology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747AG Groningen, Netherlands
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42
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Dudek J, Maack C. Mechano-energetic aspects of Barth syndrome. J Inherit Metab Dis 2022; 45:82-98. [PMID: 34423473 DOI: 10.1002/jimd.12427] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/28/2021] [Accepted: 08/19/2021] [Indexed: 12/22/2022]
Abstract
Energy-demanding organs like the heart are strongly dependent on oxidative phosphorylation in mitochondria. Oxidative phosphorylation is governed by the respiratory chain located in the inner mitochondrial membrane. The inner mitochondrial membrane is the only cellular membrane with significant amounts of the phospholipid cardiolipin, and cardiolipin was found to directly interact with a number of essential protein complexes, including respiratory chain complexes I to V. An inherited defect in the biogenesis of cardiolipin causes Barth syndrome, which is associated with cardiomyopathy, skeletal myopathy, neutropenia and growth retardation. Energy conversion is dependent on reducing equivalents, which are replenished by oxidative metabolism in the Krebs cycle. Cardiolipin deficiency in Barth syndrome also affects Krebs cycle activity, metabolite transport and mitochondrial morphology. During excitation-contraction coupling, calcium (Ca2+ ) released from the sarcoplasmic reticulum drives sarcomeric contraction. At the same time, Ca2+ influx into mitochondria drives the activation of Krebs cycle dehydrogenases and the regeneration of reducing equivalents. Reducing equivalents are essential not only for energy conversion, but also for maintaining a redox buffer, which is required to detoxify reactive oxygen species (ROS). Defects in CL may also affect Ca2+ uptake into mitochondria and thereby hamper energy supply and demand matching, but also detoxification of ROS. Here, we review the impact of cardiolipin deficiency on mitochondrial function in Barth syndrome and discuss potential therapeutic strategies.
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Affiliation(s)
- Jan Dudek
- Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Würzburg, Germany
| | - Christoph Maack
- Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Würzburg, Germany
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43
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Riera-Tur I, Schäfer T, Hornburg D, Mishra A, da Silva Padilha M, Fernández-Mosquera L, Feigenbutz D, Auer P, Mann M, Baumeister W, Klein R, Meissner F, Raimundo N, Fernández-Busnadiego R, Dudanova I. Amyloid-like aggregating proteins cause lysosomal defects in neurons via gain-of-function toxicity. Life Sci Alliance 2021; 5:5/3/e202101185. [PMID: 34933920 PMCID: PMC8711852 DOI: 10.26508/lsa.202101185] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 01/02/2023] Open
Abstract
Using cryo-ET, cell biology, and proteomics, this study shows that aggregating proteins impair the autophagy-lysosomal pathway in neurons by sequestering a subunit of the AP-3 adaptor complex. The autophagy-lysosomal pathway is impaired in many neurodegenerative diseases characterized by protein aggregation, but the link between aggregation and lysosomal dysfunction remains poorly understood. Here, we combine cryo-electron tomography, proteomics, and cell biology studies to investigate the effects of protein aggregates in primary neurons. We use artificial amyloid-like β-sheet proteins (β proteins) to focus on the gain-of-function aspect of aggregation. These proteins form fibrillar aggregates and cause neurotoxicity. We show that late stages of autophagy are impaired by the aggregates, resulting in lysosomal alterations reminiscent of lysosomal storage disorders. Mechanistically, β proteins interact with and sequester AP-3 μ1, a subunit of the AP-3 adaptor complex involved in protein trafficking to lysosomal organelles. This leads to destabilization of the AP-3 complex, missorting of AP-3 cargo, and lysosomal defects. Restoring AP-3μ1 expression ameliorates neurotoxicity caused by β proteins. Altogether, our results highlight the link between protein aggregation, lysosomal impairments, and neurotoxicity.
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Affiliation(s)
- Irene Riera-Tur
- Department of Molecules-Signaling-Development, Max Planck Institute of Neurobiology, Martinsried, Germany.,Molecular Neurodegeneration Group, Max Planck Institute of Neurobiology, Martinsried, Germany
| | - Tillman Schäfer
- Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Daniel Hornburg
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Martinsried, Germany.,Experimental Systems Immunology Group, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Archana Mishra
- Department of Molecules-Signaling-Development, Max Planck Institute of Neurobiology, Martinsried, Germany
| | - Miguel da Silva Padilha
- Department of Molecules-Signaling-Development, Max Planck Institute of Neurobiology, Martinsried, Germany.,Molecular Neurodegeneration Group, Max Planck Institute of Neurobiology, Martinsried, Germany
| | - Lorena Fernández-Mosquera
- The William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Dennis Feigenbutz
- Department of Molecules-Signaling-Development, Max Planck Institute of Neurobiology, Martinsried, Germany.,Molecular Neurodegeneration Group, Max Planck Institute of Neurobiology, Martinsried, Germany
| | - Patrick Auer
- Department of Molecules-Signaling-Development, Max Planck Institute of Neurobiology, Martinsried, Germany.,Molecular Neurodegeneration Group, Max Planck Institute of Neurobiology, Martinsried, Germany
| | - Matthias Mann
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Wolfgang Baumeister
- Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Rüdiger Klein
- Department of Molecules-Signaling-Development, Max Planck Institute of Neurobiology, Martinsried, Germany
| | - Felix Meissner
- Experimental Systems Immunology Group, Max Planck Institute of Biochemistry, Martinsried, Germany.,Department of Systems Immunology and Proteomics, Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Nuno Raimundo
- Department of Cellular and Molecular Physiology, Penn State College of Medicine, Hershey, PA, USA
| | - Rubén Fernández-Busnadiego
- Department of Molecular Structural Biology, Max Planck Institute of Biochemistry, Martinsried, Germany .,Institute of Neuropathology, University Medical Center Goettingen, Goettingen, Germany.,Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Goettingen, Goettingen, Germany
| | - Irina Dudanova
- Department of Molecules-Signaling-Development, Max Planck Institute of Neurobiology, Martinsried, Germany .,Molecular Neurodegeneration Group, Max Planck Institute of Neurobiology, Martinsried, Germany
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44
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Bosc C, Saland E, Bousard A, Gadaud N, Sabatier M, Cognet G, Farge T, Boet E, Gotanègre M, Aroua N, Mouchel PL, Polley N, Larrue C, Kaphan E, Picard M, Sahal A, Jarrou L, Tosolini M, Rambow F, Cabon F, Nicot N, Poillet-Perez L, Wang Y, Su X, Fovez Q, Kluza J, Argüello RJ, Mazzotti C, Avet-Loiseau H, Vergez F, Tamburini J, Fournié JJ, Tiong IS, Wei AH, Kaoma T, Marine JC, Récher C, Stuani L, Joffre C, Sarry JE. Mitochondrial inhibitors circumvent adaptive resistance to venetoclax and cytarabine combination therapy in acute myeloid leukemia. NATURE CANCER 2021; 2:1204-1223. [PMID: 35122057 DOI: 10.1038/s43018-021-00264-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/31/2021] [Indexed: 04/23/2023]
Abstract
Therapy resistance represents a major clinical challenge in acute myeloid leukemia (AML). Here we define a 'MitoScore' signature, which identifies high mitochondrial oxidative phosphorylation in vivo and in patients with AML. Primary AML cells with cytarabine (AraC) resistance and a high MitoScore relied on mitochondrial Bcl2 and were highly sensitive to venetoclax (VEN) + AraC (but not to VEN + azacytidine). Single-cell transcriptomics of VEN + AraC-residual cell populations revealed adaptive resistance associated with changes in oxidative phosphorylation, electron transport chain complex and the TP53 pathway. Accordingly, treatment of VEN + AraC-resistant AML cells with electron transport chain complex inhibitors, pyruvate dehydrogenase inhibitors or mitochondrial ClpP protease agonists substantially delayed relapse following VEN + AraC. These findings highlight the central role of mitochondrial adaptation during AML therapy and provide a scientific rationale for alternating VEN + azacytidine with VEN + AraC in patients with a high MitoScore and to target mitochondrial metabolism to enhance the sensitivity of AML cells to currently approved therapies.
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Affiliation(s)
- Claudie Bosc
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Estelle Saland
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Aurélie Bousard
- Department of Oncology, Laboratory for Molecular Cancer Biology, VIB Center for Cancer Biology, Leuven, Belgium
| | - Noémie Gadaud
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- University of Toulouse, Toulouse, France
- Service d'Hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, CHU de Toulouse, Toulouse, France
| | - Marie Sabatier
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Guillaume Cognet
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Thomas Farge
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Emeline Boet
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Mathilde Gotanègre
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Nesrine Aroua
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Pierre-Luc Mouchel
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- University of Toulouse, Toulouse, France
- Service d'Hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, CHU de Toulouse, Toulouse, France
| | - Nathaniel Polley
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Clément Larrue
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Eléonore Kaphan
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Muriel Picard
- Réanimation Polyvalente IUCT-oncopole, CHU de Toulouse, Toulouse, France
| | - Ambrine Sahal
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Latifa Jarrou
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Marie Tosolini
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
| | - Florian Rambow
- Department of Oncology, Laboratory for Molecular Cancer Biology, VIB Center for Cancer Biology, Leuven, Belgium
| | - Florence Cabon
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Nathalie Nicot
- LuxGen, Quantitative Biology Unit, Luxembourg Institute of Health, Strassen, Luxembourg
| | - Laura Poillet-Perez
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Yujue Wang
- Metabolomics Shared Resource, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Xiaoyang Su
- Metabolomics Shared Resource, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Quentin Fovez
- Cancer Heterogeneity Plasticity and Resistance to Therapies (CANTHER), University of Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277, Lille, France
| | - Jérôme Kluza
- Cancer Heterogeneity Plasticity and Resistance to Therapies (CANTHER), University of Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277, Lille, France
| | - Rafael José Argüello
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Céline Mazzotti
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Hervé Avet-Loiseau
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - François Vergez
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- University of Toulouse, Toulouse, France
- Service d'Hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, CHU de Toulouse, Toulouse, France
| | | | - Jean-Jacques Fournié
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
| | - Ing S Tiong
- Department of Clinical Haematology, The Alfred Hospital and Monash University, Melbourne, Victoria, Australia
| | - Andrew H Wei
- Department of Clinical Haematology, The Alfred Hospital and Monash University, Melbourne, Victoria, Australia
| | - Tony Kaoma
- Computational Biomedicine Research Group, Quantitative Biology Unit, Luxembourg Institute of Health, Luxembourg, Luxembourg
| | - Jean-Christophe Marine
- Department of Oncology, Laboratory for Molecular Cancer Biology, VIB Center for Cancer Biology, Leuven, Belgium
| | - Christian Récher
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
- University of Toulouse, Toulouse, France
- Service d'Hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, CHU de Toulouse, Toulouse, France
| | - Lucille Stuani
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Carine Joffre
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France
- LabEx Toucan, Toulouse, France
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Jean-Emmanuel Sarry
- Centre de Recherches en Cancérologie de Toulouse, Université de Toulouse, Inserm, CNRS, Toulouse, France.
- LabEx Toucan, Toulouse, France.
- Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France.
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45
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Shyam R, Ogando DG, Choi M, Liton PB, Bonanno JA. Mitochondrial ROS Induced Lysosomal Dysfunction and Autophagy Impairment in an Animal Model of Congenital Hereditary Endothelial Dystrophy. Invest Ophthalmol Vis Sci 2021; 62:15. [PMID: 34533563 PMCID: PMC8458782 DOI: 10.1167/iovs.62.12.15] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 08/18/2021] [Indexed: 01/04/2023] Open
Abstract
Purpose The Slc4a11 knock out (KO) mouse model recapitulates the human disease phenotype associated with congenital hereditary endothelial dystrophy (CHED). Increased mitochondrial reactive oxygen species (ROS) in the Slc4a11 KO mouse model is a major cause of edema and endothelial cell loss. Here, we asked if autophagy was activated by ROS in the KO mice. Methods Immortalized cell lines and mouse corneal endothelia were used to measure autophagy and lysosome associated protein expressions using Protein Simple Wes immunoassay. Autophagy and lysosome functions were examined in wild type (WT) and KO cells as well as animals treated with the mitochondrial ROS quencher MitoQ. Results Even though autophagy activation was evident, autophagy flux was aberrant in Slc4a11 KO cells and corneal endothelium. Expression of lysosomal proteins and lysosomal mass were decreased along with reduced nuclear translocation of lysosomal master regulator, transcription factor EB (TFEB). MitoQ reversed aberrant lysosomal functions and TFEB nuclear localization in KO cells. MitoQ injections in KO animals reduced corneal edema and decreased the rate of endothelial cell loss. Conclusions Mitochondrial ROS disrupts TFEB signaling causing lysosomal dysfunction with impairment of autophagy in Slc4a11 KO corneal endothelium. Our study is the first to identify the presence as well as cause of lysosomal dysfunction in an animal model of CHED, and to identify a potential therapeutic approach.
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MESH Headings
- Animals
- Anion Transport Proteins/genetics
- Autophagy/physiology
- Basic Helix-Loop-Helix Leucine Zipper Transcription Factors/metabolism
- Blotting, Western
- Cathepsin L/metabolism
- Cells, Cultured
- Corneal Dystrophies, Hereditary/genetics
- Corneal Dystrophies, Hereditary/metabolism
- Corneal Dystrophies, Hereditary/pathology
- Disease Models, Animal
- Endothelium, Corneal/drug effects
- Endothelium, Corneal/metabolism
- Gene Expression Regulation
- Immunohistochemistry
- Injections, Intraperitoneal
- Lysosomes/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Microscopy, Fluorescence
- Mitochondria/metabolism
- Organophosphorus Compounds/pharmacology
- Reactive Oxygen Species/metabolism
- Real-Time Polymerase Chain Reaction
- Symporters/genetics
- Transfection
- Ubiquinone/analogs & derivatives
- Ubiquinone/pharmacology
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Affiliation(s)
- Rajalekshmy Shyam
- Vision Science Program, School of Optometry, Indiana University, Bloomington, Indiana, United States
| | - Diego G. Ogando
- Vision Science Program, School of Optometry, Indiana University, Bloomington, Indiana, United States
| | - Moonjung Choi
- Vision Science Program, School of Optometry, Indiana University, Bloomington, Indiana, United States
| | - Paloma B. Liton
- Department of Ophthalmology, Duke University, Durham, North Carolina, United States
| | - Joseph A. Bonanno
- Vision Science Program, School of Optometry, Indiana University, Bloomington, Indiana, United States
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46
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Zuo SQ, Li C, Liu YL, Tan YH, Wan X, Xu T, Li Q, Wang L, Wu YL, Deng FM, Tang B. Cordycepin inhibits cell senescence by ameliorating lysosomal dysfunction and inducing autophagy through the AMPK and mTOR-p70S6K pathway. FEBS Open Bio 2021; 11:2705-2714. [PMID: 34448542 PMCID: PMC8487049 DOI: 10.1002/2211-5463.13263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 07/10/2021] [Accepted: 08/02/2021] [Indexed: 01/10/2023] Open
Abstract
Cell senescence is closely related to autophagy. In this article, we identified a natural nucleoside analogue, cordycepin, that has the ability to significantly improve lysosomal function, enhance the activity of the lysosomal representative protease cathepsin B (CTSB), and promote the expression of the functional protein lysosomal‐associated membrane protein 2 (LAMP2) on the lysosomal membrane. Cordycepin then restores the damaged autophagy level of aging cells by activating the classic AMPK and mTOR–p70S6K signaling pathways, thus inhibiting cell senescence in an H2O2‐induced stress‐induced premature senescence (SIPS) cell model. This study provides new theoretical support for the further development of cordycepin and clinical antiaging drugs to inhibit cell senescence and suggests that the regulatory mechanisms of lysosomes in senescent cells should be considered when treating age‐related diseases.
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Affiliation(s)
- Shi Qi Zuo
- School of Clinical Medicine, Chengdu Medical College, China
| | - Can Li
- School of Basic Medical Science, Chengdu Medical College, China.,Sichuan Clinical Research Center for Geriatrics, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, China
| | - Yi Lun Liu
- Sichuan Clinical Research Center for Geriatrics, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, China.,People's Hospital of Mingshan District, Ya'an, China
| | - Yue Hao Tan
- School of Basic Medical Science, Chengdu Medical College, China
| | - Xing Wan
- School of Clinical Medicine, Chengdu Medical College, China
| | - Tian Xu
- Sichuan Second Hospital of Traditional Chinese Medicine, Chengdu, China
| | - Qiang Li
- Sichuan Second Hospital of Traditional Chinese Medicine, Chengdu, China
| | - Li Wang
- Sichuan Second Hospital of Traditional Chinese Medicine, Chengdu, China
| | - Yong Li Wu
- Sichuan Second Hospital of Traditional Chinese Medicine, Chengdu, China
| | - Feng Mei Deng
- School of Basic Medical Science, Chengdu Medical College, China
| | - Bin Tang
- School of Basic Medical Science, Chengdu Medical College, China
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47
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Sun H, Wei X, Zeng C. Autophagy in Xp11 translocation renal cell carcinoma: from bench to bedside. Mol Cell Biochem 2021; 476:4231-4244. [PMID: 34345999 DOI: 10.1007/s11010-021-04235-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 07/27/2021] [Indexed: 12/25/2022]
Abstract
Xp11 translocation renal cell carcinoma (tRCC) characterized by the rearrangement of the TFE3 is recently identified as a unique subtype of RCC that urgently requires effective prevention and treatment strategies. Therefore, determining suitable therapeutic targets and fully understanding the biological significance of tRCC is essential. The importance of autophagy is increasingly acknowledged because it shows carcinogenic activity or suppressor effect. Autophagy is a physiological cellular process critical to maintaining cell homeostasis, which is involved in the lysosomal degradation of cytoplasmic organelles and macromolecules via the lysosomal pathway, suggesting that targeting autophagy is a potential therapeutic approach for cancer therapies. However, the underlying mechanism of autophagy in tRCC is still ambiguous. In this review, we summarize the autophagy-related signaling pathways associated with tRCC. Moreover, we examine the roles of autophagy and the immune response in tumorigenesis and investigate how these factors interact to facilitate or prevent tumorigenesis. Besides, we review the findings regarding the treatment of tRCC via induction or inhibition of autophagy. Hopefully, this study will shed some light on the functions and implications of autophagy and emphasize its role as a potential molecular target for therapeutic intervention in tRCC.
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Affiliation(s)
- Huimin Sun
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Guangdong Medical University, Shenzhen, 518110, China
| | - Xing Wei
- Department of Nephrology and Rheumatology, Shenzhen Longhua District Central Hospital, Guangdong Medical University, Shenzhen, 518110, China
| | - Changchun Zeng
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Guangdong Medical University, Shenzhen, 518110, China.
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48
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Li H, Doric Z, Berthet A, Jorgens DM, Nguyen MK, Hsieh I, Margulis J, Fang R, Debnath J, Sesaki H, Finkbeiner S, Huang E, Nakamura K. Longitudinal tracking of neuronal mitochondria delineates PINK1/Parkin-dependent mechanisms of mitochondrial recycling and degradation. SCIENCE ADVANCES 2021; 7:7/32/eabf6580. [PMID: 34362731 PMCID: PMC8346224 DOI: 10.1126/sciadv.abf6580] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Altered mitochondrial quality control and dynamics may contribute to neurodegenerative diseases, including Parkinson's disease, but we understand little about these processes in neurons. We combined time-lapse microscopy and correlative light and electron microscopy to track individual mitochondria in neurons lacking the fission-promoting protein dynamin-related protein 1 (Drp1) and delineate the kinetics of PINK1-dependent pathways of mitochondrial quality control. Depolarized mitochondria recruit Parkin to the outer mitochondrial membrane, triggering autophagosome formation, rapid lysosomal fusion, and Parkin redistribution. Unexpectedly, these mitolysosomes are dynamic and persist for hours. Some are engulfed by healthy mitochondria, and others are deacidified before bursting. In other cases, Parkin is directly recruited to the matrix of polarized mitochondria. Loss of PINK1 blocks Parkin recruitment, causes LC3 accumulation within mitochondria, and exacerbates Drp1KO toxicity to dopamine neurons. These results define a distinct neuronal mitochondrial life cycle, revealing potential mechanisms of mitochondrial recycling and signaling relevant to neurodegeneration.
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Affiliation(s)
- Huihui Li
- Gladstone Institute of Neurological Disease, Gladstone Institutes, San Francisco, CA 94158, USA
| | - Zak Doric
- Gladstone Institute of Neurological Disease, Gladstone Institutes, San Francisco, CA 94158, USA
- Graduate Program in Neuroscience, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Amandine Berthet
- Gladstone Institute of Neurological Disease, Gladstone Institutes, San Francisco, CA 94158, USA
| | - Danielle M Jorgens
- Electron Microscope Laboratory, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Mai K Nguyen
- Gladstone Institute of Neurological Disease, Gladstone Institutes, San Francisco, CA 94158, USA
| | - Ivy Hsieh
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Julia Margulis
- Gladstone Institute of Neurological Disease, Gladstone Institutes, San Francisco, CA 94158, USA
| | - Rebecca Fang
- Gladstone Institute of Neurological Disease, Gladstone Institutes, San Francisco, CA 94158, USA
- Graduate Program in Neuroscience, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Jayanta Debnath
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
- Graduate Program in Biomedical Sciences, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Hiromi Sesaki
- Department of Cell Biology, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Steve Finkbeiner
- Graduate Program in Neuroscience, University of California, San Francisco, San Francisco, CA 94158, USA
- Graduate Program in Biomedical Sciences, University of California, San Francisco, San Francisco, CA 94143, USA
- Center for Systems and Therapeutics, Gladstone Institutes, University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Neurology, University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Physiology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Eric Huang
- Graduate Program in Neuroscience, University of California, San Francisco, San Francisco, CA 94158, USA
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
- Graduate Program in Biomedical Sciences, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Ken Nakamura
- Gladstone Institute of Neurological Disease, Gladstone Institutes, San Francisco, CA 94158, USA.
- Graduate Program in Neuroscience, University of California, San Francisco, San Francisco, CA 94158, USA
- Graduate Program in Biomedical Sciences, University of California, San Francisco, San Francisco, CA 94143, USA
- Department of Neurology, University of California, San Francisco, San Francisco, CA 94158, USA
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49
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PFKFB3 Inhibition Impairs Erlotinib-Induced Autophagy in NSCLCs. Cells 2021; 10:cells10071679. [PMID: 34359849 PMCID: PMC8307619 DOI: 10.3390/cells10071679] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/01/2021] [Accepted: 07/01/2021] [Indexed: 01/18/2023] Open
Abstract
Tyrosine kinase inhibitors (TKIs) targeting the kinase domain of the epidermal growth factor receptor (EGFR), such as erlotinib, have dramatically improved clinical outcomes of patients with EGFR-driven non-small cell lung carcinomas (NSCLCs). However, intrinsic or acquired resistance remains a clinical barrier to the success of FDA-approved EGFR TKIs. Multiple mechanisms of resistance have been identified, including the activation of prosurvival autophagy. We have previously shown that the expression and activity of PFKFB3—a known driver of glycolysis—is associated with resistance to erlotinib and that PFKFB3 inhibition improves the response of NSCLC cells to erlotinib. This study focuses on investigating the role of PFKFB3 in regulating erlotinib-driven autophagy to escape resistance to erlotinib. We evaluated the consequence of pharmacological inhibition of PFKFB3 on erlotinib-driven autophagy in NSCLC cells with different mutation statuses. Here, we identify PFKFB3 as a mediator of erlotinib-induced autophagy in NSCLCs. We demonstrate that PFKFB3 inhibition sensitizes NCSLCs to erlotinib via impairing autophagy flux. In summary, our studies uncovered a novel crosstalk between PFKFB3 and EGFR that regulates erlotinib-induced autophagy, thus contributing to erlotinib sensitivity in NSCLCs.
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50
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Lin BC, Phung TH, Higgins NR, Greenslade JE, Prado MA, Finley D, Karbowski M, Polster BM, Monteiro MJ. ALS/FTD mutations in UBQLN2 are linked to mitochondrial dysfunction through loss-of-function in mitochondrial protein import. Hum Mol Genet 2021; 30:1230-1246. [PMID: 33891006 PMCID: PMC8212775 DOI: 10.1093/hmg/ddab116] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 04/13/2021] [Accepted: 04/16/2021] [Indexed: 01/12/2023] Open
Abstract
UBQLN2 mutations cause amyotrophic lateral sclerosis (ALS) with frontotemporal dementia (FTD), but the pathogenic mechanisms by which they cause disease remain unclear. Proteomic profiling identified 'mitochondrial proteins' as comprising the largest category of protein changes in the spinal cord (SC) of the P497S UBQLN2 mouse model of ALS/FTD. Immunoblots confirmed P497S animals have global changes in proteins predictive of a severe decline in mitochondrial health, including oxidative phosphorylation (OXPHOS), mitochondrial protein import and network dynamics. Functional studies confirmed mitochondria purified from the SC of P497S animals have age-dependent decline in nearly all steps of OXPHOS. Mitochondria cristae deformities were evident in spinal motor neurons of aged P497S animals. Knockout (KO) of UBQLN2 in HeLa cells resulted in changes in mitochondrial proteins and OXPHOS activity similar to those seen in the SC. KO of UBQLN2 also compromised targeting and processing of the mitochondrial import factor, TIMM44, resulting in accumulation in abnormal foci. The functional OXPHOS deficits and TIMM44-targeting defects were rescued by reexpression of WT UBQLN2 but not by ALS/FTD mutant UBQLN2 proteins. In vitro binding assays revealed ALS/FTD mutant UBQLN2 proteins bind weaker with TIMM44 than WT UBQLN2 protein, suggesting that the loss of UBQLN2 binding may underlie the import and/or delivery defect of TIMM44 to mitochondria. Our studies indicate a potential key pathogenic disturbance in mitochondrial health caused by UBQLN2 mutations.
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Affiliation(s)
- Brian C Lin
- Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Center for Biomedical Engineering and Technology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Trong H Phung
- Center for Biomedical Engineering and Technology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Nicole R Higgins
- Center for Biomedical Engineering and Technology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Program in Molecular Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Jessie E Greenslade
- Center for Biomedical Engineering and Technology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Miguel A Prado
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Daniel Finley
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Mariusz Karbowski
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Program in Molecular Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Brian M Polster
- Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Program in Molecular Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Anesthesiology, Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Mervyn J Monteiro
- Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Center for Biomedical Engineering and Technology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Program in Molecular Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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