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Pattoo TS, Khanday FA. Corelating the molecular structure of BAG3 to its oncogenic role. Cell Biol Int 2024; 48:1080-1096. [PMID: 38924608 DOI: 10.1002/cbin.12199] [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: 03/19/2024] [Revised: 05/22/2024] [Accepted: 05/31/2024] [Indexed: 06/28/2024]
Abstract
BAG3 is a multifaceted protein characterised by having WW domain, PXXP motif and BAG domain. This protein gets upregulated during malignant transformation of cells and has been associated with poorer survival of patients. Procancerous activity of BAG domain of BAG3 is well documented. BAG domain interacts with ATPase domain of Hsp-70 preventing protein delivery to proteasome. This impediment results in enhanced cell survival, proliferation, resistance to apoptosis and chemoresistance. Besides BAG domain other two domains/motifs of BAG3 are under research vigilance to explore its further oncogenic role. This review summarises the role of different structural determinants of BAG3 in elevating oncogenesis. Based on the already existing findings, more interacting partners of BAG3 are anticipated. The anticipated partners of BAG3 can shed a wealth of information into the mechanistic insights of its proproliferative role. Proper insights into the mechanistic details adopted by BAG3 to curtail/elaborate activity of anticipated interacting partners can serve as a potent target for development of therapeutic interventions.
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Affiliation(s)
| | - Firdous A Khanday
- Department of Biotechnology, University of Kashmir, Srinagar, Jammu and Kashmir, India
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2
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Lin RZ, Im GB, Luo AC, Zhu Y, Hong X, Neumeyer J, Tang HW, Perrimon N, Melero-Martin JM. Mitochondrial transfer mediates endothelial cell engraftment through mitophagy. Nature 2024; 629:660-668. [PMID: 38693258 DOI: 10.1038/s41586-024-07340-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 03/20/2024] [Indexed: 05/03/2024]
Abstract
Ischaemic diseases such as critical limb ischaemia and myocardial infarction affect millions of people worldwide1. Transplanting endothelial cells (ECs) is a promising therapy in vascular medicine, but engrafting ECs typically necessitates co-transplanting perivascular supporting cells such as mesenchymal stromal cells (MSCs), which makes clinical implementation complicated2,3. The mechanisms that enable MSCs to facilitate EC engraftment remain elusive. Here we show that, under cellular stress, MSCs transfer mitochondria to ECs through tunnelling nanotubes, and that blocking this transfer impairs EC engraftment. We devised a strategy to artificially transplant mitochondria, transiently enhancing EC bioenergetics and enabling them to form functional vessels in ischaemic tissues without the support of MSCs. Notably, exogenous mitochondria did not integrate into the endogenous EC mitochondrial pool, but triggered mitophagy after internalization. Transplanted mitochondria co-localized with autophagosomes, and ablation of the PINK1-Parkin pathway negated the enhanced engraftment ability of ECs. Our findings reveal a mechanism that underlies the effects of mitochondrial transfer between mesenchymal and endothelial cells, and offer potential for a new approach for vascular cell therapy.
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Affiliation(s)
- Ruei-Zeng Lin
- Department of Cardiac Surgery, Boston Children's Hospital, Boston, MA, USA
- Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Gwang-Bum Im
- Department of Cardiac Surgery, Boston Children's Hospital, Boston, MA, USA
- Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Allen Chilun Luo
- Department of Cardiac Surgery, Boston Children's Hospital, Boston, MA, USA
| | - Yonglin Zhu
- Department of Cardiac Surgery, Boston Children's Hospital, Boston, MA, USA
- Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Xuechong Hong
- Department of Cardiac Surgery, Boston Children's Hospital, Boston, MA, USA
- Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Joseph Neumeyer
- Department of Cardiac Surgery, Boston Children's Hospital, Boston, MA, USA
| | - Hong-Wen Tang
- Department of Genetics, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Norbert Perrimon
- Department of Genetics, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Juan M Melero-Martin
- Department of Cardiac Surgery, Boston Children's Hospital, Boston, MA, USA.
- Department of Surgery, Harvard Medical School, Boston, MA, USA.
- Harvard Stem Cell Institute, Cambridge, MA, USA.
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3
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Hu A, Sun L, Lin H, Liao Y, Yang H, Mao Y. Harnessing innate immune pathways for therapeutic advancement in cancer. Signal Transduct Target Ther 2024; 9:68. [PMID: 38523155 PMCID: PMC10961329 DOI: 10.1038/s41392-024-01765-9] [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: 09/14/2023] [Revised: 01/18/2024] [Accepted: 02/03/2024] [Indexed: 03/26/2024] Open
Abstract
The innate immune pathway is receiving increasing attention in cancer therapy. This pathway is ubiquitous across various cell types, not only in innate immune cells but also in adaptive immune cells, tumor cells, and stromal cells. Agonists targeting the innate immune pathway have shown profound changes in the tumor microenvironment (TME) and improved tumor prognosis in preclinical studies. However, to date, the clinical success of drugs targeting the innate immune pathway remains limited. Interestingly, recent studies have shown that activation of the innate immune pathway can paradoxically promote tumor progression. The uncertainty surrounding the therapeutic effectiveness of targeted drugs for the innate immune pathway is a critical issue that needs immediate investigation. In this review, we observe that the role of the innate immune pathway demonstrates heterogeneity, linked to the tumor development stage, pathway status, and specific cell types. We propose that within the TME, the innate immune pathway exhibits multidimensional diversity. This diversity is fundamentally rooted in cellular heterogeneity and is manifested as a variety of signaling networks. The pro-tumor effect of innate immune pathway activation essentially reflects the suppression of classical pathways and the activation of potential pro-tumor alternative pathways. Refining our understanding of the tumor's innate immune pathway network and employing appropriate targeting strategies can enhance our ability to harness the anti-tumor potential of the innate immune pathway and ultimately bridge the gap from preclinical to clinical application.
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Affiliation(s)
- Ankang Hu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, P.R. China
- Institute for Translational Brain Research, Shanghai Medical College, Fudan University, Shanghai, P.R. China
- National Center for Neurological Disorders, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, P.R. China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai Clinical Medical Center of Neurosurgery, Neurosurgical Institute of Fudan University, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, P.R. China
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Li Sun
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, P.R. China
- National Center for Neurological Disorders, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, P.R. China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai Clinical Medical Center of Neurosurgery, Neurosurgical Institute of Fudan University, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, P.R. China
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Hao Lin
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, P.R. China
- National Center for Neurological Disorders, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, P.R. China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai Clinical Medical Center of Neurosurgery, Neurosurgical Institute of Fudan University, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, P.R. China
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Yuheng Liao
- Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), and Key Laboratory of Metabolism and Molecular Medicine (Ministry of Education), and Molecular and Cell Biology Lab, Institutes of Biomedical Sciences, Shanghai Medical College of Fudan University, Shanghai, P.R. China
| | - Hui Yang
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, P.R. China.
- Institute for Translational Brain Research, Shanghai Medical College, Fudan University, Shanghai, P.R. China.
- National Center for Neurological Disorders, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, P.R. China.
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai Clinical Medical Center of Neurosurgery, Neurosurgical Institute of Fudan University, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, P.R. China.
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai, P.R. China.
| | - Ying Mao
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, P.R. China.
- National Center for Neurological Disorders, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, P.R. China.
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai Clinical Medical Center of Neurosurgery, Neurosurgical Institute of Fudan University, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, P.R. China.
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai, P.R. China.
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Huang W, Meng L, Xiao Z, Tan R, Yang E, Wang Y, Huang X, Yu K. Heat-tolerant intertidal rock pool coral Porites lutea can potentially adapt to future warming. Mol Ecol 2024; 33:e17273. [PMID: 38265168 DOI: 10.1111/mec.17273] [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: 08/25/2023] [Revised: 12/31/2023] [Accepted: 01/08/2024] [Indexed: 01/25/2024]
Abstract
The growing threat of global warming on coral reefs underscores the urgency of identifying heat-tolerant corals and discovering their adaptation mechanisms to high temperatures. Corals growing in intertidal rock pools that vary markedly in daily temperature may have improved heat tolerance. In this study, heat stress experiments were performed on scleractinian coral Porites lutea from subtidal habitat and intertidal rock pool of Weizhou Island in the northern South China Sea. Thermotolerance differences in corals from the two habitats and their mechanisms were explored through phenotype, physiological indicators, ITS2, 16S rRNA, and RNA sequencing. At the extremely high temperature of 34°C, rock pool P. lutea had a stronger heat tolerance than those in the subtidal habitat. The strong antioxidant capacity of the coral host and its microbial partners was important in the resistance of rock pool corals to high temperatures. The host of rock pool corals at 34°C had stronger immune and apoptotic regulation, downregulated host metabolism and disease-infection-related pathways compared to the subtidal habitat. P. lutea, in this habitat, upregulated Cladocopium C15 (Symbiodiniaceae) photosynthetic efficiency and photoprotection, and significantly increased bacterial diversity and coral probiotics, including ABY1, Ruegeria, and Alteromonas. These findings indicate that rock pool corals can tolerate high temperatures through the integrated response of coral holobionts. These corals may be 'touchstones' for future warming. Our research provides new insights into the complex mechanisms by which corals resist global warming and the theoretical basis for coral reef ecosystem restoration and selection of stress-resistant coral populations.
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Affiliation(s)
- Wen Huang
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Linqing Meng
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Zunyong Xiao
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
- School of Resources, Environment and Materials, Guangxi University, Nanning, China
| | - Ronghua Tan
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Enguang Yang
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Yonggang Wang
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Xueyong Huang
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Kefu Yu
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
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Veuthey T, Giunti S, De Rosa MJ, Alkema M, Rayes D. The neurohormone tyramine stimulates the secretion of an Insulin-Like Peptide from the intestine to modulate the systemic stress response in C. elegans. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.06.579207. [PMID: 38370834 PMCID: PMC10871264 DOI: 10.1101/2024.02.06.579207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
The DAF-2/insulin/insulin-like growth factor signaling (IIS) pathway plays an evolutionarily conserved role in regulating reproductive development, lifespan, and stress resistance. In C. elegans , DAF-2/IIS signaling is modulated by an extensive array of insulin-like peptides (ILPs) with diverse spatial and temporal expression patterns. However, the release dynamics and specific functions of these ILPs in adapting to different environmental conditions remain poorly understood. Here, we show that the ILP, INS-3, plays a crucial role in modulating the response to different types of stressors in C. elegans . ins-3 mutants display increased resistance to both heat and oxidative stress; however, under favorable conditions, this advantage is countered by slower reproductive development. ins-3 expression in both neurons and the intestine is downregulated in response to environmental stressors. Conversely, the neurohormone tyramine, which is released during the acute flight response, triggers an upregulation in ins-3 expression. Moreover, we found that tyramine negatively impacts environmental stress resistance by stimulating the release of INS-3 from the intestine. The subsequent release of INS-3 systemically activates the DAF-2 pathway, resulting in the inhibition of cytoprotective mechanisms mediated by DAF-16/FOXO and HSF-1. These studies offer mechanistic insights into the brain-gut communication pathway that weighs adaptive strategies to respond to acute and long-term stress scenarios.
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Luo D, Li S, Guo J, Yue H, Shi L, Liu R, Wang J, Shi X. The role and mechanism of AZD5363 anti-leukemia activity in T-cell acute lymphoblastic leukemia. Eur J Pharmacol 2024; 963:176268. [PMID: 38096965 DOI: 10.1016/j.ejphar.2023.176268] [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: 07/11/2023] [Revised: 12/01/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
BACKGROUND T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive and heterogeneous hematologic malignancy. Chemotherapy resistance and refractory relapses are the most important challenges in T-ALL. PI3K/Akt/mTOR pathway has been implicated in regulating cell survival, T-ALL development and resistance to chemotherapy. We explored the effects of AZD5363 (a potent pan-Akt inhibitor) alone and in combination with autophagy inhibitor hydroxycholoroquine sulfate (HCQ) in cultured CCRF-CEM, Jurkat and PF382 cells and a T-ALL xenograft mouse model. METHODS A xenograft mouse model was used to investigate the effect of AZD5363 on T-ALL progression. MTT assay, flow cytometry, siRNA, transmission electron microscopy and western blotting were performed in cultured CCRF-CEM, Jurkat and PF382 cells. The interaction between AZD5363 and HCQ was explored by molecular docking. RESULTS AZD5363 delayed T-ALL progression and increased the expression of cleaved caspase-3 and LC3B-II in mice. AZD5363 decreased cells viability by arresting cell cycle in the G1 phase and inducing apoptosis, and, significantly increased the number of autophagosomes (p < 0.01). The increased expression of cleaved caspase-3 and LC3B-II, and phosphorylation of Akt and mTOR were significantly, inhibited by AZD5363. HCQ blocked AZD5363-induced autophagy and enhanced AZD5363-induced cell death (p < 0.01). CONCLUSIONS AZD5363 suppressed T-ALL progression and its anti-leukemia activity was enhanced by HCQ in T-ALL cells, which might provide a potential therapeutic strategy for human T-ALL.
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Affiliation(s)
- Danqing Luo
- Department of Hematology, The Affiliated of Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Shen Li
- Translational Medicine Laboratory, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Jin Guo
- Translational Medicine Laboratory, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Huixuan Yue
- Translational Medicine Laboratory, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Lixiao Shi
- Department of Hematology, The Affiliated of Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Rong Liu
- Department of Hematology, The Affiliated of Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Jianhua Wang
- Translational Medicine Laboratory, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China.
| | - Xiaodong Shi
- Department of Hematology, The Affiliated of Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China.
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Reghu G, Vemula PK, Bhat SG, Narayanan S. Harnessing the innate immune system by revolutionizing macrophage-mediated cancer immunotherapy. J Biosci 2024; 49:63. [PMID: 38864238 PMCID: PMC11286319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 01/18/2024] [Accepted: 02/03/2024] [Indexed: 06/13/2024]
Abstract
Immunotherapy is a promising and safer alternative to conventional cancer therapies. It involves adaptive T-cell therapy, cancer vaccines, monoclonal antibodies, immune checkpoint blockade (ICB), and chimeric antigen receptor (CAR) based therapies. However, most of these modalities encounter restrictions in solid tumours owing to a dense, highly hypoxic and immune-suppressive microenvironment as well as the heterogeneity of tumour antigens. The elevated intra-tumoural pressure and mutational rates within fastgrowing solid tumours present challenges in efficient drug targeting and delivery. The tumour microenvironment is a dynamic niche infiltrated by a variety of immune cells, most of which are macrophages. Since they form a part of the innate immune system, targeting macrophages has become a plausible immunotherapeutic approach. In this review, we discuss several versatile approaches (both at pre-clinical and clinical stages) such as the direct killing of tumour-associated macrophages, reprogramming pro-tumour macrophages to anti-tumour phenotypes, inhibition of macrophage recruitment into the tumour microenvironment, novel CAR macrophages, and genetically engineered macrophages that have been devised thus far. These strategies comprise a strong and adaptable macrophage-toolkit in the ongoing fight against cancer and by understanding their significance, we may unlock the full potential of these immune cells in cancer therapy.
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Affiliation(s)
- Gayatri Reghu
- Department of Biotechnology, Cochin University of Science and Technology, Kochi 682 022, India
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Quintero-Espinosa DA, Velez-Pardo C, Jimenez-Del-Rio M. High Yield of Functional Dopamine-like Neurons Obtained in NeuroForsk 2.0 Medium to Study Acute and Chronic Rotenone Effects on Oxidative Stress, Autophagy, and Apoptosis. Int J Mol Sci 2023; 24:15744. [PMID: 37958728 PMCID: PMC10647258 DOI: 10.3390/ijms242115744] [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: 08/31/2023] [Revised: 10/24/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
Several efforts to develop new protocols to differentiate in in vitro human mesenchymal stromal cells (hMSCs) into dopamine (DA) neurons have been reported. We have formulated NeuroForsk 2.0 medium containing fibroblast growth factor type beta (FGFb), brain-derived neurotrophic factor (BDNF), melatonin, purmorphamine, and forskolin. We report for the first time that menstrual stromal cells (MenSCs) cultured in NeuroForsk 2.0 medium for 7 days transdifferentiated into DA-like neurons (DALNs) expressing specific DA lineage markers tyrosine hydroxylase-positive cells (TH+) and DA transporter-positive (DAT+) cells and were responsive to DA-induced transient Ca2+ influx. To test the usefulness of this medium, DALNs were exposed to rotenone (ROT), a naturally occurring organic neurotoxin used extensively to chemically induce an in vitro model of Parkinson's disease (PD), which is a movement disorder characterized by the specific loss of DA neurons. We wanted to determine whether ROT induces apoptotic cell death and autophagy pathway under acute or chronic conditions in DALNs. Here, we report that acute ROT exposure induced several molecular changes in DALNS. ROT induced a loss of mitochondrial membrane potential (ΔΨm), high expression of parkin (PRKN), and high colocalization of dynamin-related protein 1 (DRP1) with the mitochondrial translocase of the outer membrane of mitochondria 20 (TOMM20) protein. Acute ROT also induced the appearance of DJ-1Cys106-SO3, as evidenced by the generation of H2O2 and oxidative stress (OS) damage. Remarkably, ROT triggered the phosphorylation of leucine-rich repeat kinase 2 (LRRK2) at residue Ser935 and phosphorylation of α-Syn at residue Ser129, a pathological indicator. ROT induced the accumulation of lipidated microtubule-associated protein 1B-light chain 3 (LC3B), a highly specific marker of autophagosomes. Finally, ROT induced cleaved caspase 3 (CC3), a marker of activated caspase 3 (CASP3) in apoptotic DALNs compared to untreated DANLs. However, the chronic condition was better at inducing the accumulation of lysosomes than the acute condition. Importantly, the inhibitor of the LRRK2 kinase PF-06447475 (PF-475) almost completely blunted ROT-induced apoptosis and reduced ROT-induced accumulation of lysosomes in both acute and chronic conditions in DALNs. Our data suggest that LRRK2 kinase regulated both apoptotic cell death and autophagy in DALNs under OS. Given that defects in mitochondrial complex I activity are commonly observed in PD, ROT works well as a chemical model of PD in both acute and chronic conditions. Therefore, prevention and treatment therapy should be guided to relieve DALNs from mitochondrial damage and OS, two of the most important triggers in the apoptotic cell death of DALNs.
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Affiliation(s)
| | | | - Marlene Jimenez-Del-Rio
- Neuroscience Research Group, Institute of Medical Research, Faculty of Medicine, University of Antioquia, University Research Headquarters, Calle 62#52-59, Building 1, Laboratory 411/412, Medellin 050010, Colombia; (D.A.Q.-E.); (C.V.-P.)
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9
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Lee SK, Kam EH, Cheon SY. Autophagy Enhancers Regulate Cholesterol-Induced Cytokine Secretion and Cytotoxicity in Macrophages. J Lipid Atheroscler 2023; 12:189-200. [PMID: 37265848 PMCID: PMC10232223 DOI: 10.12997/jla.2023.12.2.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/13/2023] [Accepted: 05/03/2023] [Indexed: 06/03/2023] Open
Abstract
Objective Hypercholesterolaemia transforms macrophages into lipid-laden foam cells in circulation, which can activate the immune response. Compromised autophagy and inflammatory cytokines are involved in the pathogenesis and progression of metabolic diseases. The aim of this study was to identify the role of autophagy as a modulator of the inflammatory response and cytotoxicity in macrophages under hypercholesterolaemic conditions. Methods High cholesterol-induced cytokine secretion and alteration of autophagy-associated molecules were confirmed by cytokine array and western blot analysis, respectively. To confirm whether autophagic regulation affects high cholesterol-induced cytokine release and cytotoxicity, protein levels of autophagic molecules, cell viability, and cytotoxicity were measured in cultured macrophages treated autophagy enhancers. Results Cholesterol treatment increased cytokine secretion, cellular toxicity, and lactate dehydrogenase release in lipopolysaccharide (LPS)-primed macrophages. Concomitantly, altered levels of autophagy-related molecules were detected in LPS-primed macrophages under hypercholesterolaemic conditions. Treatment with autophagy enhancers reversed the secretion of cytokines, abnormally expressed autophagy-associated molecules, and cytotoxicity of LPS-primed macrophages. Conclusion Autophagy enhancers inhibit inflammatory cytokine secretion and reduce cytotoxicity under metabolic disturbances, such as hypercholesterolaemia. Modulation of autophagy may be a novel approach to control the inflammatory response observed in metabolic diseases.
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Affiliation(s)
- Su Kyoung Lee
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - Eun Hee Kam
- Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - So Yeong Cheon
- Department of Biotechnology, College of Biomedical & Health Science, Konkuk University, Chungju, Korea
- Research Institute for Biomedical & Health Science, Konkuk University, Chungju, Korea
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10
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Qu H, Feldman AM, Hakonarson H. Genetics of BAG3: A Paradigm for Developing Precision Therapies for Dilated Cardiomyopathies. J Am Heart Assoc 2022; 11:e027373. [PMID: 36382946 PMCID: PMC9851466 DOI: 10.1161/jaha.122.027373] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 09/20/2022] [Indexed: 11/18/2022]
Abstract
Nonischemic dilated cardiomyopathy is a common form of heart muscle disease in which genetic factors play a critical etiological role. In this regard, both rare disease-causing mutations and common disease-susceptible variants, in the Bcl-2-associated athanogene 3 (BAG3) gene have been reported, highlighting the critical role of BAG3 in cardiomyocytes and in the development of dilated cardiomyopathy. The phenotypic effects of the BAG3 mutations help investigators understand the structure and function of the BAG3 gene. Indeed, we report herein that all of the known pathogenic/likely pathogenic variants affect at least 1 of 3 protein functional domains, ie, the WW domain, the second IPV (Ile-Pro-Val) domain, or the BAG domain, whereas none of the missense nontruncating pathogenic/likely pathogenic variants affect the proline-rich repeat (PXXP) domain. A common variant, p.Cys151Arg, associated with reduced susceptibility to dilated cardiomyopathy demonstrated a significant difference in allele frequencies among diverse human populations, suggesting evolutionary selective pressure. As BAG3-related therapies for heart failure move from the laboratory to the clinic, the ability to provide precision medicine will depend in large part on having a thorough understanding of the potential effects of both common and uncommon genetic variants on these target proteins. The current review article provides a roadmap that investigators can utilize to determine the potential interactions between a patient's genotype, their phenotype, and their response to therapeutic interventions with both gene delivery and small molecules.
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Affiliation(s)
- Hui‐Qi Qu
- The Center for Applied Genomics, Children’s Hospital of PhiladelphiaPhiladelphiaPA
| | - Arthur M. Feldman
- Department of Medicine, Division of CardiologyThe Lewis Katz School of Medicine at Temple UniversityPhiladelphiaPA
- The Center for Neurovirology and Gene EditingThe Lewis Katz School of Medicine at Temple UniversityPhiladelphiaPA
| | - Hakon Hakonarson
- The Center for Applied Genomics, Children’s Hospital of PhiladelphiaPhiladelphiaPA
- Department of Pediatrics, The Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA
- Division of Human GeneticsChildren’s Hospital of PhiladelphiaPhiladelphiaPA
- Division of Pulmonary MedicineChildren’s Hospital of PhiladelphiaPhiladelphiaPA
- Faculty of MedicineUniversity of IcelandReykjavikIceland
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11
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Pu J. Targeting the lysosome: Mechanisms and treatments for nonalcoholic fatty liver disease. J Cell Biochem 2022; 123:1624-1633. [PMID: 35605052 PMCID: PMC9617749 DOI: 10.1002/jcb.30274] [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: 02/11/2022] [Revised: 04/24/2022] [Accepted: 05/02/2022] [Indexed: 11/11/2022]
Abstract
The multiple functions of the lysosome, including degradation, nutrient sensing, signaling, and gene regulation, enable the lysosome to regulate lipid metabolism at different levels. In this review, I summarize the recent studies on lysosomal regulation of lipid metabolism and the alterations of the lysosome functions in the livers affected by nonalcoholic fatty liver disease (NAFLD). NAFLD is a highly prevalent lipid metabolic disorder. The progression of NAFLD leads to nonalcoholic steatohepatitis (NASH) and other severe liver diseases, and thus the prevention and treatments of NAFLD progression are critically needed. Targeting the lysosome is a promising strategy. I also discuss the current manipulations of the lysosome functions in the preclinical studies of NAFLD and propose my perspectives on potential future directions.
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Affiliation(s)
- Jing Pu
- Department of Molecular Genetics and Microbiology, Autophagy, Inflammation, and Metabolism (AIM) Center of Biomedical Research Excellence, University of New Mexico, Albuquerque, New Mexico, USA
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12
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Huang W, Yang E, Yu K, Meng L, Wang Y, Liang J, Huang X, Wang G. Lower cold tolerance of tropical Porites lutea is possibly detrimental to its migration to relatively high latitude refuges in the South China Sea. Mol Ecol 2022; 31:5339-5355. [PMID: 35976256 DOI: 10.1111/mec.16662] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 12/15/2022]
Abstract
As high temperature stress due to climate change threatens tropical corals, cooler areas at relatively high latitudes may be potential refuges. Tolerance to low temperatures is critical in determining whether corals can successfully migrate to higher latitudes. However, the physiological and molecular adaptations that protect corals from low temperature stress are unclear. In this study, scleractinian Porites lutea samples from the tropical Xisha Islands (XS) and subtropical Daya Bay (DY) in the South China Sea were subjected to a reduction in ambient temperature from 26 to 12°C. Differences in physiological changes and gene expression were analysed. P. lutea from both XS and DY exhibited physiological bleaching under low temperature stress, and the Symbiodiniaceae density, Fv/Fm, and chlorophyll-α content were significantly reduced. Symbiosome antioxidative stress and metabolic enzyme activity first increased and then decreased. RNA-seq analysis showed that the host responded to low temperature stress by activating immune, apoptotic, and autophagic pathways and reducing metabolic levels. Nevertheless, Symbiodiniaceae lacked the physiological regulatory capacity to adapt to low temperatures. The lower cold tolerance of XS tropical P. lutea may attribute to lower oxidative stress resistance, lower photosynthetic capacity, worse energy supply, and higher susceptibility to bacterial and viral infections and diseases in XS corals. The difference in cold tolerance may result from genetic differences between the geographic populations and is possibly detrimental to the migration of tropical coral to relatively high latitude refuges. This study provides a theoretical basis for anthropogenically assisted coral migration as a response to global change.
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Affiliation(s)
- Wen Huang
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Enguang Yang
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Kefu Yu
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China.,Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, China
| | - Linqing Meng
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Yonggang Wang
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Jiayuan Liang
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Xueyong Huang
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
| | - Guanghua Wang
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, China
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13
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Dhanisha SS, Guruvayoorappan C. Potential role of cGAS/STING pathway in regulating cancer progression. Crit Rev Oncol Hematol 2022; 178:103780. [PMID: 35953012 DOI: 10.1016/j.critrevonc.2022.103780] [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: 06/06/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 10/15/2022] Open
Abstract
The activation of innate immune response after the engagement of dsDNA is an evolutionarily preserved sophisticated strategy against invading microbial pathogens. cGAS has been identified as one of the major dsDNA sensor present in the cytoplasm which catalyzes the synthesis of a cyclic dinucleotide 2'3'cGAMP, as the secondary messenger that binds and activates the downstream stimulator of interferon (IFN) genes (STING) for subsequent production of type 1 IFNs and other inflammatory genes. Recent progress in the mechanical understanding of cGAS/STING signalling has unveiled its intricate role in tumor progression and metastasis. In this review, we specifically focus on new developments concerning the role of cGAS/STING signalling in regulating antitumorigenesis and tumorigenesis.
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Affiliation(s)
- Suresh Sulekha Dhanisha
- Laboratory of Immunopharmacology and Experimental Therapeutics, Division of Cancer Research Regional Cancer Centre, Research Centre, University of Kerala, Medical College Campus, Thiruvananthapuram 695011, Kerala, India
| | - Chandrasekharan Guruvayoorappan
- Laboratory of Immunopharmacology and Experimental Therapeutics, Division of Cancer Research Regional Cancer Centre, Research Centre, University of Kerala, Medical College Campus, Thiruvananthapuram 695011, Kerala, India.
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14
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Soldatov VO, Pokrovskiy MV, Puchenkova OA, Zhunusov NS, Krayushkina AM, Grechina AV, Soldatova MO, Lapin KN, Bushueva OY. EPOR/CD131-mediated attenuation of rotenone-induced retinal degeneration is associated with upregulation of autophagy genes. BULLETIN OF RUSSIAN STATE MEDICAL UNIVERSITY 2022. [DOI: 10.24075/brsmu.2022.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mitochondrial dysfunction is a key driver of neurodegeneration. This study aimed to evaluate the protective potential of EPOR/CD131 (heterodimeric erythropoietin receptor) stimulation in the neurodegeneration caused by rotenone-induced mitochondrial dysfunction. The effects of erythropoietin (EPO) and an EPO mimetic peptide pHBSP were assessed using in vivo and in vitro models. Single injections of 10 µg/kg EPO or 5 µg/kg pHBSP significantly alleviated the degeneration of ganglion cells of the retina in a rotenone-induced retinopathy in rats (p < 0.05). Consistently, in vitro exposure of rotenone-treated murine primary neuroglial cultures to 500 nM EPO or pHBSP significantly rescued the survival of the cells (p < 0.005). The observed enhancement of LC3A, ATG7, Beclin-1, Parkin and BNIP3 mRNA expression by EPOR/CD131 agonists implicates the autophagy and mitophagy activation as a plausible mitoprotective mechanism.
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Affiliation(s)
- VO Soldatov
- Belgorod State National Research University, Belgorod, Russia
| | - MV Pokrovskiy
- Belgorod State National Research University, Belgorod, Russia
| | - OA Puchenkova
- Belgorod State National Research University, Belgorod, Russia
| | - NS Zhunusov
- Belgorod State National Research University, Belgorod, Russia
| | - AM Krayushkina
- Belgorod State National Research University, Belgorod, Russia
| | - AV Grechina
- Sechenov First Moscow State Medical University, Moscow, Russia
| | | | - KN Lapin
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow, Russia
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15
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Degan S, May BL, Jin YJ, Hammouda MB, Sun H, Zhang G, Wang Y, Erdmann D, Warren W, Zhang JY. Co-Treatment of Chloroquine and Trametinib Inhibits Melanoma Cell Proliferation and Decreases Immune Cell Infiltration. Front Oncol 2022; 12:782877. [PMID: 35847840 PMCID: PMC9282877 DOI: 10.3389/fonc.2022.782877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 05/25/2022] [Indexed: 12/02/2022] Open
Abstract
Autophagy is characterized as a cytoprotective process and inhibition of autophagy with medicinally active agents, such as chloroquine (CQ) is proposed as a prospective adjuvant therapy for cancer. Here, we examined the preclinical effects of CQ combined with the MEK inhibitor trametinib (TRA) on melanoma. We found that cotreatment of CQ and TRA markedly slowed melanoma growth induced in Tyr-CreER.BrafCa.Ptenfl/fl mice. Immunostaining showed that trametinib decreased Ki-67+ proliferating cells, and increased TUNEL+ apoptotic cells. The combo treatment induced a further decrease of Ki-67+ proliferating cells. Consistent with the in vivo findings, CQ and TRA inhibited melanoma cell proliferation in vitro, which was correlated by decreased cyclin D1 expression. In addition, we found that tissues treated with CQ and TRA had significantly decreased numbers of CD4+ and CD8+ T-lymphocytes and F4/80+ macrophages. Together, these results indicate that cotreatment of CQ and TRA decreases cancer cell proliferation, but also dampens immune cell infiltration. Further study is warranted to understand whether CQ-induced immune suppression inadvertently affects therapeutic benefits.
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Affiliation(s)
- Simone Degan
- Department of Dermatology, Duke University Medical Center, Durham, NC, United States
- Department of Chemistry, Duke University, Durham, NC, United States
| | - Brian L. May
- Department of Surgery, Duke University, Durham, NC, United States
| | - Yingai J. Jin
- Department of Dermatology, Duke University Medical Center, Durham, NC, United States
| | - Manel Ben Hammouda
- Department of Dermatology, Duke University Medical Center, Durham, NC, United States
| | - Huiying Sun
- Department of Dermatology, Duke University Medical Center, Durham, NC, United States
| | - Guoqiang Zhang
- Department of Dermatology, Duke University Medical Center, Durham, NC, United States
| | - Yan Wang
- Department of Dermatology, Duke University Medical Center, Durham, NC, United States
| | - Detlev Erdmann
- Division of Plastic, Maxillofacial and Oral Surgery, Duke University Medical Center, Durham, NC, United States
| | - Warren Warren
- Department of Chemistry, Duke University, Durham, NC, United States
| | - Jennifer Y. Zhang
- Department of Dermatology, Duke University Medical Center, Durham, NC, United States
- Department of Pathology, Duke University Medical Center, Durham, NC, United States
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16
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Hispidulin Enhances Temozolomide (TMZ)-Induced Cytotoxicity against Malignant Glioma Cells In Vitro by Inhibiting Autophagy. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2022; 2022:5266770. [PMID: 35800695 PMCID: PMC9256375 DOI: 10.1155/2022/5266770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/28/2022] [Accepted: 06/13/2022] [Indexed: 11/23/2022]
Abstract
Temozolomide (TMZ), an oral alkylating agent, is the widely used first-line chemotherapeutic reagent for glioma in clinical practice. However, TMZ-induced autophagy is another cellular process favoring glioma cell survival. This study aimed to explore whether hispidulin can facilitate TMZ-induced cell death of glioma. The MTT assay showed that coadministration with hispidulin and TMZ could significantly decrease the viability of glioma U87MG cells. Meanwhile, hispidulin administration was also observed to promote TMZ-induced apoptosis. Furthermore, additional hispidulin treatment further elevated TMZ-induced expression of Bax, cleaved-caspase-9, and cleaved-caspase-3 protein but decreased Bcl-2 protein expression in U87MG cells. We also observed that hispidulin suppressed TMZ-induced autophagy to promote apoptosis, as showed by decreased AVOs and LC3B-I/II protein expression. These results collectively suggested that the combination of hispidulin and TMZ could improve the antitumor efficiency of TMZ against malignant gliomas.
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17
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Pei D, Dalbey RE. Membrane Translocation of Folded Proteins. J Biol Chem 2022; 298:102107. [PMID: 35671825 PMCID: PMC9251779 DOI: 10.1016/j.jbc.2022.102107] [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: 02/05/2022] [Revised: 05/31/2022] [Accepted: 06/01/2022] [Indexed: 12/01/2022] Open
Abstract
An ever-increasing number of proteins have been shown to translocate across various membranes of bacterial as well as eukaryotic cells in their folded states as a part of physiological and/or pathophysiological processes. Herein we provide an overview of the systems/processes that are established or likely to involve the membrane translocation of folded proteins, such as protein export by the twin-arginine translocation (TAT) system in bacteria and chloroplasts, unconventional protein secretion (UPS) and protein import into the peroxisome in eukaryotes, and the cytosolic entry of proteins (e.g., bacterial toxins) and viruses into eukaryotes. We also discuss the various mechanistic models that have previously been proposed for the membrane translocation of folded proteins including pore/channel formation, local membrane disruption, membrane thinning, and transport by membrane vesicles. Finally, we introduce a newly discovered vesicular transport mechanism, vesicle budding and collapse (VBC), and present evidence that VBC may represent a unifying mechanism that drives some (and potentially all) of folded protein translocation processes.
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Affiliation(s)
- Dehua Pei
- Department of Chemistry and Biochemistry, The Ohio State University, 484 West 12(th) Avenue, Columbus, OH 43210.
| | - Ross E Dalbey
- Department of Chemistry and Biochemistry, The Ohio State University, 484 West 12(th) Avenue, Columbus, OH 43210.
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18
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Wotton JM, Peterson E, Flenniken AM, Bains RS, Veeraragavan S, Bower LR, Bubier JA, Parisien M, Bezginov A, Haselimashhadi H, Mason J, Moore MA, Stewart ME, Clary DA, Delbarre DJ, Anderson LC, D'Souza A, Goodwin LO, Harrison ME, Huang Z, Mckay M, Qu D, Santos L, Srinivasan S, Urban R, Vukobradovic I, Ward CS, Willett AM, Braun RE, Brown SD, Dickinson ME, Heaney JD, Kumar V, Lloyd KK, Mallon AM, McKerlie C, Murray SA, Nutter LM, Parkinson H, Seavitt JR, Wells S, Samaco RC, Chesler EJ, Smedley D, Diatchenko L, Baumbauer KM, Young EE, Bonin RP, Mandillo S, White JK. Identifying genetic determinants of inflammatory pain in mice using a large-scale gene-targeted screen. Pain 2022; 163:1139-1157. [PMID: 35552317 PMCID: PMC9100450 DOI: 10.1097/j.pain.0000000000002481] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 08/17/2021] [Accepted: 09/07/2021] [Indexed: 02/03/2023]
Abstract
ABSTRACT Identifying the genetic determinants of pain is a scientific imperative given the magnitude of the global health burden that pain causes. Here, we report a genetic screen for nociception, performed under the auspices of the International Mouse Phenotyping Consortium. A biased set of 110 single-gene knockout mouse strains was screened for 1 or more nociception and hypersensitivity assays, including chemical nociception (formalin) and mechanical and thermal nociception (von Frey filaments and Hargreaves tests, respectively), with or without an inflammatory agent (complete Freund's adjuvant). We identified 13 single-gene knockout strains with altered nocifensive behavior in 1 or more assays. All these novel mouse models are openly available to the scientific community to study gene function. Two of the 13 genes (Gria1 and Htr3a) have been previously reported with nociception-related phenotypes in genetically engineered mouse strains and represent useful benchmarking standards. One of the 13 genes (Cnrip1) is known from human studies to play a role in pain modulation and the knockout mouse reported herein can be used to explore this function further. The remaining 10 genes (Abhd13, Alg6, BC048562, Cgnl1, Cp, Mmp16, Oxa1l, Tecpr2, Trim14, and Trim2) reveal novel pathways involved in nociception and may provide new knowledge to better understand genetic mechanisms of inflammatory pain and to serve as models for therapeutic target validation and drug development.
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Affiliation(s)
| | - Emma Peterson
- The Jackson Laboratory, Bar Harbor, ME, United States
| | - Ann M. Flenniken
- The Centre for Phenogenomics, Toronto, ON, Canada
- Lunenfeld-Tanenbaum Research Institute, Sinai Health, Toronto, ON, Canada
| | - Rasneer S. Bains
- The Mary Lyon Centre, MRC Harwell Institute, Didcot, Oxfordshire, United Kingdom
| | - Surabi Veeraragavan
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, United States
| | - Lynette R. Bower
- Mouse Biology Program, University of California-Davis, Davis, CA, United States
| | | | - Marc Parisien
- Department of Anesthesia, Faculty of Medicine, Faculty of Dentistry, McGill University, Genome Building, Montreal, QC, Canada
| | - Alexandr Bezginov
- The Centre for Phenogenomics, Toronto, ON, Canada
- The Hospital for Sick Children, Toronto, ON, Canada
| | - Hamed Haselimashhadi
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Hinxton, Cambridgeshire, United Kingdom
| | - Jeremy Mason
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Hinxton, Cambridgeshire, United Kingdom
| | | | - Michelle E. Stewart
- The Mary Lyon Centre, MRC Harwell Institute, Didcot, Oxfordshire, United Kingdom
| | - Dave A. Clary
- Mouse Biology Program, University of California-Davis, Davis, CA, United States
| | - Daniel J. Delbarre
- Mammalian Genetics Unit, MRC Harwell Institute, Didcot, Oxfordshire, United Kingdom
| | | | - Abigail D'Souza
- The Centre for Phenogenomics, Toronto, ON, Canada
- Lunenfeld-Tanenbaum Research Institute, Sinai Health, Toronto, ON, Canada
| | | | - Mark E. Harrison
- The Mary Lyon Centre, MRC Harwell Institute, Didcot, Oxfordshire, United Kingdom
| | - Ziyue Huang
- The Centre for Phenogenomics, Toronto, ON, Canada
- Lunenfeld-Tanenbaum Research Institute, Sinai Health, Toronto, ON, Canada
| | - Matthew Mckay
- The Jackson Laboratory, Bar Harbor, ME, United States
| | - Dawei Qu
- The Centre for Phenogenomics, Toronto, ON, Canada
- Lunenfeld-Tanenbaum Research Institute, Sinai Health, Toronto, ON, Canada
| | - Luis Santos
- Mammalian Genetics Unit, MRC Harwell Institute, Didcot, Oxfordshire, United Kingdom
| | - Subhiksha Srinivasan
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States
| | - Rachel Urban
- The Jackson Laboratory, Bar Harbor, ME, United States
| | - Igor Vukobradovic
- The Centre for Phenogenomics, Toronto, ON, Canada
- Lunenfeld-Tanenbaum Research Institute, Sinai Health, Toronto, ON, Canada
| | - Christopher S. Ward
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, United States
| | | | | | - Steve D.M. Brown
- Mammalian Genetics Unit, MRC Harwell Institute, Didcot, Oxfordshire, United Kingdom
| | - Mary E. Dickinson
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, United States
| | - Jason D. Heaney
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States
| | - Vivek Kumar
- The Jackson Laboratory, Bar Harbor, ME, United States
| | - K.C. Kent Lloyd
- Mouse Biology Program, University of California-Davis, Davis, CA, United States
- Department of Surgery, School of Medicine, University of California-Davis, Davis, CA, United States
| | - Ann-Marie Mallon
- Mammalian Genetics Unit, MRC Harwell Institute, Didcot, Oxfordshire, United Kingdom
| | - Colin McKerlie
- Lunenfeld-Tanenbaum Research Institute, Sinai Health, Toronto, ON, Canada
- The Hospital for Sick Children, Toronto, ON, Canada
| | | | - Lauryl M.J. Nutter
- The Centre for Phenogenomics, Toronto, ON, Canada
- The Hospital for Sick Children, Toronto, ON, Canada
| | - Helen Parkinson
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Hinxton, Cambridgeshire, United Kingdom
| | - John R. Seavitt
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States
| | - Sara Wells
- The Mary Lyon Centre, MRC Harwell Institute, Didcot, Oxfordshire, United Kingdom
| | - Rodney C. Samaco
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, United States
| | | | - Damian Smedley
- William Harvey Research Institute, Charterhouse Square, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Luda Diatchenko
- Department of Anesthesia, Faculty of Medicine, Faculty of Dentistry, McGill University, Genome Building, Montreal, QC, Canada
| | | | - Erin E. Young
- Anesthesiology, University of Kansas School of Medicine, KU Medical Center, Kansas City, KS, United States
| | - Robert P. Bonin
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, Canada
| | - Silvia Mandillo
- Institute of Biochemistry and Cell Biology-National Research Council, IBBC-CNR, Monterotondo (RM), Italy
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19
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Carneiro LS, Martinez LC, Oliveira AHD, Cossolin JFS, Resende MTCSD, Gonçalves WG, Medeiros-Santana L, Serrão JE. Acute oral exposure to imidacloprid induces apoptosis and autophagy in the midgut of honey bee Apis mellifera workers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 815:152847. [PMID: 34995599 DOI: 10.1016/j.scitotenv.2021.152847] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/19/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
The honey bee Apis mellifera is an important pollinator that increases the yield and quality of crops. In recent years, honey bee populations have declined in some parts of the world, which has been associated with several causes, including pesticides used in agriculture. Neonicotinoids are neurotoxic insecticides widely used in the world with systemic action mode contaminating nectar and pollen that may be consumed by bees. This study evaluated the side effects of imidacloprid in the midgut of A. mellifera after acute oral exposure. Toxicity, histopathology, cytotoxicity, and expression of autophagy-related gene atg1 were evaluated in honey bee workers orally exposed to imidacloprid. The estimated imidacloprid LC50 was 1.44 mg L-1. The midgut epithelium of bees fed on imidacloprid LC50 has the occurrence of cytoplasm vacuoles, enlarged intercellular spaces, disorganization of the striated border, and nuclear pyknosis, with an organ injury index that increases with time exposure. The midgut digestive cells of treated bees have apical protrusions, damaged mitochondria, and autophagosomes that were characterized for content with organelle debris and high expression of atg1. These features indicate the occurrence of high cell death in the midgut of workers exposed to imidacloprid, which may affect the digestibility the physiology of the insect.
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Affiliation(s)
- Lenise Silva Carneiro
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Luis Carlos Martinez
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | | | | | | | - Wagner Gonzanga Gonçalves
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Luanda Medeiros-Santana
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Viçosa - campus Rio Paranaíba, Rio Paranaíba, Minas Gerais 38810-00, Brazil
| | - José Eduardo Serrão
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil.
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20
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Vargas G, Cortés O, Arias-Muñoz E, Hernández S, Cerda-Troncoso C, Hernández L, González AE, Tatham MH, Bustamante HA, Retamal C, Cancino J, Varas-Godoy M, Hay RT, Rojas-Fernández A, Cavieres VA, Burgos PV. Negative Modulation of Macroautophagy by Stabilized HERPUD1 is Counteracted by an Increased ER-Lysosomal Network With Impact in Drug-Induced Stress Cell Survival. Front Cell Dev Biol 2022; 10:743287. [PMID: 35309917 PMCID: PMC8924303 DOI: 10.3389/fcell.2022.743287] [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: 07/18/2021] [Accepted: 01/27/2022] [Indexed: 11/25/2022] Open
Abstract
Macroautophagy and the ubiquitin proteasome system work as an interconnected network in the maintenance of cellular homeostasis. Indeed, efficient activation of macroautophagy upon nutritional deprivation is sustained by degradation of preexisting proteins by the proteasome. However, the specific substrates that are degraded by the proteasome in order to activate macroautophagy are currently unknown. By quantitative proteomic analysis we identified several proteins downregulated in response to starvation independently of ATG5 expression. Among them, the most significant was HERPUD1, an ER membrane protein with low expression and known to be degraded by the proteasome under normal conditions. Contrary, under ER stress, levels of HERPUD1 increased rapidly due to a blockage in its proteasomal degradation. Thus, we explored whether HERPUD1 stability could work as a negative regulator of autophagy. In this work, we expressed a version of HERPUD1 with its ubiquitin-like domain (UBL) deleted, which is known to be crucial for its proteasome degradation. In comparison to HERPUD1-WT, we found the UBL-deleted version caused a negative role on basal and induced macroautophagy. Unexpectedly, we found stabilized HERPUD1 promotes ER remodeling independent of unfolded protein response activation observing an increase in stacked-tubular structures resembling previously described tubular ER rearrangements. Importantly, a phosphomimetic S59D mutation within the UBL mimics the phenotype observed with the UBL-deleted version including an increase in HERPUD1 stability and ER remodeling together with a negative role on autophagy. Moreover, we found UBL-deleted version and HERPUD1-S59D trigger an increase in cellular size, whereas HERPUD1-S59D also causes an increased in nuclear size. Interestingly, ER remodeling by the deletion of the UBL and the phosphomimetic S59D version led to an increase in the number and function of lysosomes. In addition, the UBL-deleted version and phosphomimetic S59D version established a tight ER-lysosomal network with the presence of extended patches of ER-lysosomal membrane-contact sites condition that reveals an increase of cell survival under stress conditions. Altogether, we propose stabilized HERPUD1 downregulates macroautophagy favoring instead a closed interplay between the ER and lysosomes with consequences in drug-cell stress survival.
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Affiliation(s)
- Gabriela Vargas
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Omar Cortés
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Eloisa Arias-Muñoz
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.,Centro de Envejecimiento y Regeneración (CARE-UC), Facultad de Ciencias Biológicas, Pontificia Universidad Católica, Santiago, Chile
| | - Sergio Hernández
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Cristobal Cerda-Troncoso
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Laura Hernández
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Alexis E González
- Facultad de Medicina, Instituto de Fisiología, Universidad Austral de Chile, Valdivia, Chile
| | - Michael H Tatham
- Center for Gene Regulation and Expression, College of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Hianara A Bustamante
- Facultad de Medicina, Instituto de Microbiología Clínica, Universidad Austral de Chile, Valdivia, Chile
| | - Claudio Retamal
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Jorge Cancino
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Manuel Varas-Godoy
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Ronald T Hay
- Center for Gene Regulation and Expression, College of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Alejandro Rojas-Fernández
- Center for Gene Regulation and Expression, College of Life Sciences, University of Dundee, Dundee, United Kingdom.,Instituto de Medicina & Centro Interdisciplinario de Estudios del Sistema Nervioso (CISNe), Universidad Austral de Chile, Valdivia, Chile
| | - Viviana A Cavieres
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.,Centro de Envejecimiento y Regeneración (CARE-UC), Facultad de Ciencias Biológicas, Pontificia Universidad Católica, Santiago, Chile
| | - Patricia V Burgos
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.,Centro de Envejecimiento y Regeneración (CARE-UC), Facultad de Ciencias Biológicas, Pontificia Universidad Católica, Santiago, Chile.,Centro Ciencia & Vida, Fundación Ciencia & Vida, Santiago, Chile
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21
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Zadeh FA, Raji A, Ali SAJ, Abdelbasset WK, Alekhina N, Iswanto AH, Terefe EM, Jalil AT. Autophagy-related chemoradiotherapy sensitivity in non-small cell lung cancer (NSCLC). Pathol Res Pract 2022; 233:153823. [DOI: 10.1016/j.prp.2022.153823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 02/18/2022] [Accepted: 02/23/2022] [Indexed: 10/19/2022]
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22
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The complex interplay between autophagy and cell death pathways. Biochem J 2022; 479:75-90. [PMID: 35029627 DOI: 10.1042/bcj20210450] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/21/2021] [Accepted: 12/23/2021] [Indexed: 12/26/2022]
Abstract
Autophagy is a universal cellular homeostatic process, required for the clearance of dysfunctional macromolecules or organelles. This self-digestion mechanism modulates cell survival, either directly by targeting cell death players, or indirectly by maintaining cellular balance and bioenergetics. Nevertheless, under acute or accumulated stress, autophagy can also contribute to promote different modes of cell death, either through highly regulated signalling events, or in a more uncontrolled inflammatory manner. Conversely, apoptotic or necroptotic factors have also been implicated in the regulation of autophagy, while specific factors regulate both processes. Here, we survey both earlier and recent findings, highlighting the intricate interaction of autophagic and cell death pathways. We, Furthermore, discuss paradigms, where this cross-talk is disrupted, in the context of disease.
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23
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Yang Y, Chen Z, Zhao X, Xie H, Du L, Gao H, Xie C. Mechanisms of Kaempferol in the treatment of diabetes: A comprehensive and latest review. Front Endocrinol (Lausanne) 2022; 13:990299. [PMID: 36157449 PMCID: PMC9490412 DOI: 10.3389/fendo.2022.990299] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/17/2022] [Indexed: 01/07/2023] Open
Abstract
Obesity-insulin resistance-β-cells apoptosis" is an important trilogy of the pathogenesis of type 2 diabetes. With the global pandemic of obesity and diabetes, continuous research and development of new drugs focuses on the prevention of the pathological progress of these diseases. According to a recent study, the natural product kaempferol has excellent antidiabetic effects. Therefore, this review comprehensively summarized the frontier studies and pharmacological mechanisms of kaempferol in the treatment of diabetes. The successful research and development of kaempferol may yield a significant leap in the treatment of diabetes and its complications.
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Affiliation(s)
- Yan Yang
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Zhengtao Chen
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaoyan Zhao
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Hongyan Xie
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Lian Du
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hong Gao
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Hong Gao, ; Chunguang Xie,
| | - Chunguang Xie
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Hong Gao, ; Chunguang Xie,
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24
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The therapeutic effect of hesperetin on doxorubicin-induced testicular toxicity: Potential roles of the mechanistic target of rapamycin kinase (mTOR) and dynamin-related protein 1 (DRP1). Toxicol Appl Pharmacol 2021; 435:115833. [PMID: 34933056 DOI: 10.1016/j.taap.2021.115833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 12/15/2021] [Accepted: 12/16/2021] [Indexed: 12/13/2022]
Abstract
Clinical utilization of doxorubicin (DOX), which is a commonly used chemotherapeutic, is restricted due to toxic effects on various tissues. Using hesperetin (HST), an antioxidant used in Chinese traditional medicine protects testis against DOX-induced toxicity although the molecular mechanisms are not well-known. The study was aimed to examine the possible role of the mechanistic target of rapamycin kinase (mTOR) and dynamin 1-like dynamin-related protein 1 (DRP1) in the therapeutic effects of HST on the DOX-induced testicular toxicity. Rats were divided into Control, DOX, DOX + HST, and HST groups (n = 7). Single-dose DOX (15 mg/kg) was administered intraperitoneally and HST (50 mg/kg) was administered by oral gavage every other day for 28 days. Total antioxidant status (TAS), histopathological evaluations, immunohistochemistry, and gene expression level detection analyses were performed. Histopathologically, DOX-induced testicular damage was ameliorated by HST treatment. DOX reduced testicular TAS levels and increased oxidative stress markers, 8-Hydroxy-deoxyguanosine (8-OHdG), and 4-Hydroxynonenal (4-HNE). Also, upregulated mTOR and DRP1 expressions with DOX exposure were decreased after HST treatment in the testis (p < 0.05). On the other hand, DOX-administration downregulated miR-150-5p and miR-181b-2-3p miRNAs, targeting mTOR and mRNA levels of beclin 1 (BECN1) and autophagy-related 5 (ATG5), autophagic markers. Furthermore, these levels were nearly similar to control testis samples in the DOX + HST group (p < 0.05). The study demonstrated that HST may have a therapeutic effect on DOX-induced testicular toxicity by removing reactive oxygen species (ROS) and by modulating the mTOR and DRP1 expressions, which have a critical role in regulating the balance of generation/elimination of ROS.
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25
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Autophagy in α-Synucleinopathies-An Overstrained System. Cells 2021; 10:cells10113143. [PMID: 34831366 PMCID: PMC8618716 DOI: 10.3390/cells10113143] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/05/2021] [Accepted: 11/08/2021] [Indexed: 01/01/2023] Open
Abstract
Alpha-synucleinopathies comprise progressive neurodegenerative diseases, including Parkinson's disease (PD), dementia with Lewy bodies (DLB), and multiple system atrophy (MSA). They all exhibit the same pathological hallmark, which is the formation of α-synuclein positive deposits in neuronal or glial cells. The aggregation of α-synuclein in the cell body of neurons, giving rise to the so-called Lewy bodies (LBs), is the major characteristic for PD and DLB, whereas the accumulation of α-synuclein in oligodendroglial cells, so-called glial cytoplasmic inclusions (GCIs), is the hallmark for MSA. The mechanisms involved in the intracytoplasmic inclusion formation in neuronal and oligodendroglial cells are not fully understood to date. A possible mechanism could be an impaired autophagic machinery that cannot cope with the high intracellular amount of α-synuclein. In fact, different studies showed that reduced autophagy is involved in α-synuclein aggregation. Furthermore, altered levels of different autophagy markers were reported in PD, DLB, and MSA brains. To date, the trigger point in disease initiation is not entirely clear; that is, whether autophagy dysfunction alone suffices to increase α-synuclein or whether α-synuclein is the pathogenic driver. In the current review, we discuss the involvement of defective autophagy machinery in the formation of α-synuclein aggregates, propagation of α-synuclein, and the resulting neurodegenerative processes in α-synucleinopathies.
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26
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Xu K, Lu C, Ren X, Wang J, Xu P, Zhang Y. Overexpression of HIF-1α enhances the protective effect of mitophagy on steroid-induced osteocytes apoptosis. ENVIRONMENTAL TOXICOLOGY 2021; 36:2123-2137. [PMID: 34310007 DOI: 10.1002/tox.23327] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/01/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
Glucocorticoid (GC; dexamethasone, DEX) -induced osteonecrosis of the femoral head (GIOFH) is a challenging orthopedic disease, and its underlying mechanism remains not clear. This study exposed murine long bone osteocyte-Y4 (MLO-Y4) cells to DEX below normoxic or hypoxic circumstances and found that cell autophagy have been reduced. At the same time, flow cytometry analysis showed increased apoptosis, which was more pronounced in hypoxic environments. Recent research also claimed that GC induces osteoporosis after osteocyte apoptosis, and subsequent microfractures lead to ischemia and hypoxia of the femoral head, resulted in GIOFH. Presently, we found that both mitophagy-related protein hypoxia-inducible factor-1α (HIF-1α) and BNIP3 were up-regulated in the hypoxic environment, and their expression was down-regulated when exposed to DEX. Besides, we demonstrated that overexpressing HIF-1α resisted DEX-induced apoptosis in a hypoxic environment. Here, we demonstrated that overexpression of HIF-1α, through its downstream marker BNIP3, reduced the suppression of DEX on mitophagy induced by hypoxia and protected bone cells from apoptosis. Also, these findings may provide a direction of the promising application for better GIOFH treatment shortly.
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Affiliation(s)
- Ke Xu
- Department of Orthopaedics of the First Affiliated Hospital, Medical School, Xi'an Jiaotong University, Xi'an, China
| | - Chao Lu
- Department of Joint Surgery, Hong Hui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Xiaoyu Ren
- Department of Joint Surgery, Hong Hui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Jing Wang
- Department of Orthopaedics of the First Affiliated Hospital, Medical School, Xi'an Jiaotong University, Xi'an, China
| | - Peng Xu
- Department of Joint Surgery, Hong Hui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Yingang Zhang
- Department of Orthopaedics of the First Affiliated Hospital, Medical School, Xi'an Jiaotong University, Xi'an, China
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27
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Chatterjee D, Chakrabarti O. Role of stress granules in modulating senescence and promoting cancer progression: Special emphasis on glioma. Int J Cancer 2021; 150:551-561. [PMID: 34460104 DOI: 10.1002/ijc.33787] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/22/2021] [Accepted: 08/24/2021] [Indexed: 12/12/2022]
Abstract
Stress granules (SGs) contain mRNAs and proteins stalled in translation during stress; these are increasingly being implicated in diseases, including neurological disorders and cancer. The dysregulated assembly, persistence, disassembly and clearance of SGs contribute to the process of senescence. Senescence has long been a mysterious player in cellular physiology and associated diseases. The systemic process of aging has been pivotal in the development of various neurological disorders like age-related neuropathy, Alzheimer's disease and Parkinson's disease. Glioma is a cancer of neurological origin with a very poor prognosis and high rate of recurrence, SGs have only recently been implicated in its pathogenesis. Senescence has long been established to play an antitumorigenic role, however, relatively less studied is its protumorigenic importance. Here, we have evaluated the existing literature to assess the crosstalk of the two biological phenomena of senescence and SG formation in the context of tumorigenesis. In this review, we have attempted to analyze the contribution of senescence in regulating diverse cellular processes, like, senescence associated secretory phenotype (SASP), microtubular reorganization, telomeric alteration, autophagic clearance and how intricately these phenomena are tied with the formation of SGs. Finally, we propose that interplay between senescence, its contributing factors and the genesis of SGs can drive tumorigenicity of gliomas, which can potentially be utilized for therapeutic intervention.
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Affiliation(s)
- Debmita Chatterjee
- Biophysics & Structural Genomics Division, Saha Institute of Nuclear Physics, Kolkata, India
| | - Oishee Chakrabarti
- Biophysics & Structural Genomics Division, Saha Institute of Nuclear Physics, Kolkata, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
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28
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Ross BX, Jia L, Kong D, Wang T, Hager HM, Abcouwer SF, Zacks DN. Conditional Knock out of High-Mobility Group Box 1 (HMGB1) in Rods Reduces Autophagy Activation after Retinal Detachment. Cells 2021; 10:2010. [PMID: 34440779 PMCID: PMC8394251 DOI: 10.3390/cells10082010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/27/2021] [Accepted: 08/04/2021] [Indexed: 12/18/2022] Open
Abstract
After retinal detachment (RD), the induction of autophagy protects photoreceptors (PR) from apoptotic cell death. The cytoplasmic high-mobility group box 1 (HMGB1) promotes autophagy. We previously demonstrated that the deletion of HMGB1 from rod PRs results in a more rapid death of these cells after RD. In this work, we tested the hypothesis that the lack of HMGB1 accelerates PR death after RD due to the reduced activation of protective autophagy in the retina after RD. The injection of 1% hyaluronic acid into the subretinal space was used to create acute RD in mice with a rhodopsin-Cre-mediated conditional knockout (cKO) of HMGB1 in rods (HMGB1Δrod) and littermate controls. RD sharply increased the number of apoptotic cells in the outer nuclear layer (ONL), and this number was further increased in HMGB1Δrod mouse retinas. The activation of autophagy after RD was reduced in the HMGB1Δrod mouse retinas compared to controls, as evidenced by diminished levels of autophagy regulatory proteins LC3-II, Beclin1, ATG5/12, and phospho-ATG16L1. The cKO of HMGB1 in rods increased the expression of Fas and the Bax/Bcl-2 ratio in detached retinas, promoting apoptotic cell death. In conclusion, endogenous HMGB1 facilitates autophagy activation in PR cells following RD to promote PR cell survival and reduce programmed apoptotic cell death.
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Affiliation(s)
- Bing X. Ross
- Kellogg Eye Center, Department of Ophthalmology, University of Michigan, 1000 Wall St, Ann Arbor, MI 48105, USA; (B.X.R.); (L.J.); (D.K.); (T.W.); (H.M.H.); (S.F.A.)
| | - Lin Jia
- Kellogg Eye Center, Department of Ophthalmology, University of Michigan, 1000 Wall St, Ann Arbor, MI 48105, USA; (B.X.R.); (L.J.); (D.K.); (T.W.); (H.M.H.); (S.F.A.)
| | - Dejuan Kong
- Kellogg Eye Center, Department of Ophthalmology, University of Michigan, 1000 Wall St, Ann Arbor, MI 48105, USA; (B.X.R.); (L.J.); (D.K.); (T.W.); (H.M.H.); (S.F.A.)
| | - Tiantian Wang
- Kellogg Eye Center, Department of Ophthalmology, University of Michigan, 1000 Wall St, Ann Arbor, MI 48105, USA; (B.X.R.); (L.J.); (D.K.); (T.W.); (H.M.H.); (S.F.A.)
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Heather M. Hager
- Kellogg Eye Center, Department of Ophthalmology, University of Michigan, 1000 Wall St, Ann Arbor, MI 48105, USA; (B.X.R.); (L.J.); (D.K.); (T.W.); (H.M.H.); (S.F.A.)
| | - Steven F. Abcouwer
- Kellogg Eye Center, Department of Ophthalmology, University of Michigan, 1000 Wall St, Ann Arbor, MI 48105, USA; (B.X.R.); (L.J.); (D.K.); (T.W.); (H.M.H.); (S.F.A.)
| | - David N. Zacks
- Kellogg Eye Center, Department of Ophthalmology, University of Michigan, 1000 Wall St, Ann Arbor, MI 48105, USA; (B.X.R.); (L.J.); (D.K.); (T.W.); (H.M.H.); (S.F.A.)
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Sansa A, Hidalgo I, Miralles MP, de la Fuente S, Perez-Garcia MJ, Munell F, Soler RM, Garcera A. Spinal Muscular Atrophy autophagy profile is tissue-dependent: differential regulation between muscle and motoneurons. Acta Neuropathol Commun 2021; 9:122. [PMID: 34217376 PMCID: PMC8254901 DOI: 10.1186/s40478-021-01223-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 06/24/2021] [Indexed: 11/10/2022] Open
Abstract
Spinal muscular atrophy (SMA) is a neuromuscular genetic disease caused by reduced survival motor neuron (SMN) protein. SMN is ubiquitous and deficient levels cause spinal cord motoneurons (MNs) degeneration and muscle atrophy. Nevertheless, the mechanism by which SMN reduction in muscle contributes to SMA disease is not fully understood. Therefore, studies evaluating atrophy mechanisms in SMA muscles will contribute to strengthening current knowledge of the pathology. Here we propose to evaluate autophagy in SMA muscle, a pathway altered in myotube atrophy. We analized autophagy proteins and mTOR in muscle biopsies, fibroblasts, and lymphoblast cell lines from SMA patients and in gastrocnemius muscles from a severe SMA mouse model. Human MNs differentiated from SMA and unaffected control iPSCs were also included in the analysis of the autophagy. Muscle biopsies, fibroblasts, and lymphoblast cell lines from SMA patients showed reduction of the autophagy marker LC3-II. In SMA mouse gastrocnemius, we observed lower levels of LC3-II, Beclin 1, and p62/SQSTM1 proteins at pre-symptomatic stage. mTOR phosphorylation at Ser2448 was decreased in SMA muscle cells. However, in mouse and human cultured SMA MNs mTOR phosphorylation and LC3-II levels were increased. These results suggest a differential regulation in SMA of the autophagy process in muscle cells and MNs. Opposite changes in autophagy proteins and mTOR phosphorylation between muscle cells and neurons were observed. These differences may reflect a specific response to SMN reduction, which could imply diverse tissue-dependent reactions to therapies that should be taken into account when treating SMA patients.
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Qiu Y, Zhao Y, Long Z, Song A, Huang P, Wang K, Xu L, Molloy DP, He G. Liquiritigenin promotes osteogenic differentiation and prevents bone loss via inducing auto-lysosomal degradation and inhibiting apoptosis. Genes Dis 2021; 10:284-300. [PMID: 37013063 PMCID: PMC10066282 DOI: 10.1016/j.gendis.2021.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 06/16/2021] [Accepted: 06/22/2021] [Indexed: 01/18/2023] Open
Abstract
Osteoporosis (OP) is a debilitating skeletal abnormality involving bone remodeling and bone cell homeostasis characterized by decreased bone strength and high fracture risk. A novel therapeutic intervention for OP by manipulating cellular autophagy-apoptosis processes to promote skeletal homeostasis is presented. Protective effects of the naturally occurring plant extract Liquiritigenin (LG) were demonstrated in an ovariectomy (OVX)-OP mouse model and preosteoblast MC3T3-E1 cells. Micro-CT and histological staining assessments of skeletal phenotype were applied alongside detection of autophagy activity in osteocytes and MC3T3-E1 cells by transmission electron microscopy (TEM). The effects of LG on chloroquine (CQ)- and the apoptosis-inducing TS-treated osteogenic differentiations and status of lysosomes within MC3T3-E1 cells were analyzed by Neutral red, Alizarin red S and alkaline phosphatase (ALP) staining and Western blot assays. Treatment with LG prevented bone loss, increased osteogenic differentiation in vivo and in vitro, and inhibited osteoclast formation to some extent. TEM analyses revealed that LG can improve auto-lysosomal degradation within osteocytes from OVX mice and MC3T3-E1 cells. The abnormal status of lysosomes associated with CQ and TS treatments was notably alleviated by LG which also reduced levels of apoptosis-induced inhibition of osteogenic differentiation and averted abnormal osteogenic differentiation as a consequence of a blockage in autolysosome degradation. Overall, LG stimulates bone growth in OVX mice through increased osteogenic differentiation and regulation of autophagy-apoptosis mechanisms, presenting an auspicious natural therapy for OP.
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31
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Ye G, Zhang L, Zhou X. Long noncoding RNAs are potentially involved in the degeneration of virulence in an aphid-obligate pathogen, Conidiobolus obscurus (Entomophthoromycotina). Virulence 2021; 12:1705-1716. [PMID: 34167451 PMCID: PMC8237998 DOI: 10.1080/21505594.2021.1938806] [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] [Indexed: 11/23/2022] Open
Abstract
Virulence attenuation frequently occurs in in vitro culturing of pathogenic microbes. In this study, we investigated the total putative long noncoding RNAs (lncRNAs) in an aphid-obligate pathogen, Conidiobolus obscurus, and screened the differentially expressed (DE) lncRNAs and protein-coding genes involved in the virulence decline. The virulence was significantly attenuated after eight subculturing events, in which the median lethal concentration of the conidia ejected from mycelial mats relative to the bamboo aphid, Takecallis taiwanus, increased from 36.1 to 126.1 conidia mm–2, four days after inoculation. In total, 1,252 lncRNAs were identified based on the genome-wide transcriptional analysis. By characterizing their molecular structures and expression patterns, we found that the lncRNAs possessed shorter transcripts, lower expression, and fewer exons than did protein-coding genes in C. obscurus. A total of 410 DE genes of 329 protein-coding genes and 81 lncRNAs were identified. The functional enrichment analysis showed the DE genes were enriched in peptidase activity, protein folding, autophagy, and metabolism. Moreover, target prediction analysis of the 81 lncRNAs revealed 3,111 cis-regulated and 23 trans-regulated mRNAs, while 121 DE lncRNA-mRNA pairs were possibly involved in virulence decline. Moreover, the DE lncRNA-regulated target genes mainly encoded small heat shock proteins, secretory proteins, transporters, autophagy proteins, and other stress response-related proteins. This implies that the decline in virulence regulated by lncRNAs was likely associated with the environmental stress response of C. obscurus. Hence, these findings can provide insights into the lncRNA molecules of Entomophthoromycotina, with regards to virulence regulators of entomopathogens.
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Affiliation(s)
- Guofang Ye
- Forest Protection Department, State Key Laboratory of Subtropical Silviculture, National Joint Local Engineering Laboratory of Biopesticide High-efficient Preparation, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, People's Republic of China
| | - Lvhao Zhang
- Forest Protection Department, State Key Laboratory of Subtropical Silviculture, National Joint Local Engineering Laboratory of Biopesticide High-efficient Preparation, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, People's Republic of China
| | - Xiang Zhou
- Forest Protection Department, State Key Laboratory of Subtropical Silviculture, National Joint Local Engineering Laboratory of Biopesticide High-efficient Preparation, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, People's Republic of China
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32
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Suzuki M, Anko M, Ohara M, Matsumoto KI, Hasegawa S. Radiation-Induced Autophagy in Human Pancreatic Cancer Cells is Critically Dependent on G2 Checkpoint Activation: A Mechanism of Radioresistance in Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2021; 111:260-271. [PMID: 34112559 DOI: 10.1016/j.ijrobp.2021.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 04/01/2021] [Accepted: 04/03/2021] [Indexed: 12/24/2022]
Abstract
PURPOSE Autophagy and cell-cycle checkpoints act in concert to confer cellular radioresistance. We investigated the functional interaction between radiation-induced autophagy and G2 checkpoint activation in highly radioresistant human pancreatic ductal adenocarcinoma (PDAC) cells. METHODS AND MATERIALS Four human PDAC cell lines (MIA PaCa-2, KP-4, Panc-1, and SUIT-2) were analyzed. These cells were first irradiated using x-rays, and their cell cycle status, autophagy, and cell cycle checkpoint marker expression and ATP production levels were evaluated. Autophagic flux assays and siRNA knockdown were used to evaluate autophagy activity. Double thymidine block experiments were performed to synchronize the cells. Two inhibitors (MK-1775 and SCH 900776) were used to attenuate G2 checkpoint activation. Cell survival assays and animal experiments were performed to evaluate the radiosensitizing effects of the G2 checkpoint inhibitors. RESULTS Autophagy and G2/M accumulation were synchronously induced in human PDAC cells with an activated G2 checkpoint at 12 hours after x-ray irradiation of 6 Gy. Radiation-induced autophagy produced the ATP levels required for cell survival. Double thymidine block experiments revealed that no autophagy occurred in cells that were solely in G2 phase. MK-1775 or SCH 900776 exposure attenuated not only G2 checkpoint activation but also postirradiation autophagy, indicating the dependence of radiation-induced autophagy on an activated G2 checkpoint. The inhibitors demonstrated a higher radiosensitizing effect in the PDAC cells than the autophagy inhibitor chloroquine. MK-1775 in combination with x-rays significantly suppressed the tumor growth of MIA PaCa-2 xenografts compared with other treatment groups, including radiation or drug exposure alone, to enhance the radiosensitivity of PDAC cells in vivo. CONCLUSIONS Biological crosstalk exists between the G2 checkpoint activation and radiation-induced autophagy processes that are believed to independently contribute to the radioresistance of human PDAC cells. These findings have important implications for the development of future radiation therapy strategies for PDAC.
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Affiliation(s)
- Motofumi Suzuki
- Radiation and Cancer Biology Group; Quantitative RedOx Sensing Group, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Mayuka Anko
- Radiation and Cancer Biology Group; Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Maki Ohara
- Radiation and Cancer Biology Group; Institute of Materials Structure Science, High Energy Accelerator Research Organization, Ibaraki, Japan
| | - Ken-Ichiro Matsumoto
- Quantitative RedOx Sensing Group, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
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Jena BC, Rout L, Dey A, Mandal M. Active autophagy in cancer-associated fibroblasts: Recent advances in understanding the novel mechanism of tumor progression and therapeutic response. J Cell Physiol 2021; 236:7887-7902. [PMID: 34008184 DOI: 10.1002/jcp.30419] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/03/2021] [Accepted: 05/06/2021] [Indexed: 12/11/2022]
Abstract
Autophagy is primarily a homeostatic and catabolic process that is increasingly being recognized to have a pivotal role in the initiation and maintenance of cancer cells, as well as in the emergence of therapeutic resistance. Moreover, in the tumor microenvironment (TME) autophagy plays a crucial and sometimes dichotomous role in tumor progression. Recent studies show that during the early stages of tumor initiation, autophagy suppresses tumorigenesis. However, in the advanced stage of tumorigenesis, autophagy promotes cancer progression by protecting cancer cells against stressful conditions and therapeutic assault. Specifically, in cancer-associated fibroblasts (CAFs), autophagy promotes tumorigenesis not only by providing nutrients to the cancerous cells but also by inducing epithelial to mesenchymal transition, angiogenesis, stemness, and metastatic dissemination of the cancer cells, whereas in the immune cells, autophagy induces the tumor-localized immune response. In the TME, CAFs play a crucial role in cancer cell metabolism, immunoreaction, and growth. Therefore, targeting autophagy in CAFs by several pharmacological inducers like rapamycin or the inhibitor such as chloroquine has gained importance in preclinical and clinical trials. In the present review, we summarized the basic mechanism of autophagy in CAFs along with its role in driving tumorigenic progression through several emerging as well as classical hallmarks of cancer. We also addressed various autophagy inducers as well as inhibitors of autophagy for more efficient cancer management. Eventually, we prioritized some of the outstanding issues that must be addressed with utmost priority in the future to elucidate the role of autophagy in CAFs on tumor progression and therapeutic intervention.
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Affiliation(s)
- Bikash Chandra Jena
- Cancer Biology Lab, School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India
| | - Lipsa Rout
- Department of Chemistry, Institute of Technical Education and Research, Siksha'O'Anusandhan Deemed to be University, Bhubaneswar, Odisha, India
| | - Ankita Dey
- Cancer Biology Lab, School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India
| | - Mahitosh Mandal
- Cancer Biology Lab, School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India
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Patel NH, Bloukh S, Alwohosh E, Alhesa A, Saleh T, Gewirtz DA. Autophagy and senescence in cancer therapy. Adv Cancer Res 2021; 150:1-74. [PMID: 33858594 DOI: 10.1016/bs.acr.2021.01.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Tumor cells can undergo diverse responses to cancer therapy. While apoptosis represents the most desirable outcome, tumor cells can alternatively undergo autophagy and senescence. Both autophagy and senescence have the potential to make complex contributions to tumor cell survival via both cell autonomous and cell non-autonomous pathways. The induction of autophagy and senescence in tumor cells, preclinically and clinically, either individually or concomitantly, has generated interest in the utilization of autophagy modulating and senolytic therapies to target autophagy and senescence, respectively. This chapter summarizes the current evidence for the promotion of autophagy and senescence as fundamental responses to cancer therapy and discusses the complexity of their functional contributions to cell survival and disease outcomes. We also highlight current modalities designed to exploit autophagy and senescence in efforts to improve the efficacy of cancer therapy.
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Affiliation(s)
- Nipa H Patel
- Department of Pharmacology and Toxicology and Medicine, Virginia Commonwealth University, Richmond, VA, United States; Massey Cancer Center, Goodwin Research Laboratories, Virginia Commonwealth University, Richmond, VA, United States
| | - Sarah Bloukh
- Department of Basic Medical Sciences, Faculty of Medicine, The Hashemite University, Zarqa, Jordan
| | - Enas Alwohosh
- Department of Basic Medical Sciences, Faculty of Medicine, The Hashemite University, Zarqa, Jordan
| | - Ahmad Alhesa
- Department of Basic Medical Sciences, Faculty of Medicine, The Hashemite University, Zarqa, Jordan
| | - Tareq Saleh
- Department of Basic Medical Sciences, Faculty of Medicine, The Hashemite University, Zarqa, Jordan
| | - David A Gewirtz
- Department of Pharmacology and Toxicology and Medicine, Virginia Commonwealth University, Richmond, VA, United States; Massey Cancer Center, Goodwin Research Laboratories, Virginia Commonwealth University, Richmond, VA, United States.
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Chen K, Yoshimura T, Gong W, Tian C, Huang J, Trinchieri G, Wang JM. Requirement of CRAMP for mouse macrophages to eliminate phagocytosed E. coli through an autophagy pathway. J Cell Sci 2021; 134:jcs252148. [PMID: 33468624 PMCID: PMC7970306 DOI: 10.1242/jcs.252148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 12/30/2020] [Indexed: 01/19/2023] Open
Abstract
Host-derived antimicrobial peptides play an important role in the defense against extracellular bacterial infections. However, the capacity of antimicrobial peptides derived from macrophages as potential antibacterial effectors against intracellular pathogens remains unknown. In this study, we report that normal (wild-type, WT) mouse macrophages increased their expression of cathelin-related antimicrobial peptide (CRAMP, encoded by Camp) after infection by viable E. coli or stimulation with inactivated E. coli and its product lipopolysaccharide (LPS), a process involving activation of NF-κB followed by protease-dependent conversion of CRAMP from an inactive precursor to an active form. The active CRAMP was required by WT macrophages for elimination of phagocytosed E. coli, with participation of autophagy-related proteins ATG5, LC3-II and LAMP-1, as well as for aggregation of the bacteria with p62 (also known as SQSTM1). This process was impaired in CRAMP-/- macrophages, resulting in retention of intracellular bacteria and fragmentation of macrophages. These results indicate that CRAMP is a critical component in autophagy-mediated clearance of intracellular E. coli by mouse macrophages.
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Affiliation(s)
- Keqiang Chen
- Laboratory of Cancer ImmunoMetabolism, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
| | - Teizo Yoshimura
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Wanghua Gong
- Basic Research Program, Leidos Biomedical Research, Inc., Frederick, MD 21702, USA
| | - Cuimeng Tian
- Laboratory of Cancer ImmunoMetabolism, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
- Beijing Tuberculosis and Thoracic Tumor Research Institute/Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Jiaqiang Huang
- Laboratory of Cancer ImmunoMetabolism, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
- College of Life Sciences, Beijing Jiaotong University, Beijing 100044, China
| | - Giorgio Trinchieri
- Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Ji Ming Wang
- Laboratory of Cancer ImmunoMetabolism, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
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The BAD-BAX-Caspase-3 Cascade Modulates Synaptic Vesicle Pools via Autophagy. J Neurosci 2021; 41:1174-1190. [PMID: 33303681 DOI: 10.1523/jneurosci.0969-20.2020] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 11/20/2020] [Accepted: 11/29/2020] [Indexed: 12/12/2022] Open
Abstract
The BAD-BAX-caspase-3 cascade is a canonical apoptosis pathway. Macroautophagy ("autophagy" hereinafter) is a process by which organelles and aggregated proteins are delivered to lysosomes for degradation. Here, we report a new function of the BAD-BAX-caspase-3 cascade and autophagy in the control of synaptic vesicle pools. We found that, in hippocampal neurons of male mice, the BAD-BAX-caspase-3 pathway regulates autophagy, which in turn limits the size of synaptic vesicle pools and influences the kinetics of activity-induced depletion and recovery of synaptic vesicle pools. Moreover, the caspase-autophagy pathway is engaged by fear conditioning to facilitate associative fear learning and memory. This work identifies a new mechanism for controlling synaptic vesicle pools, and a novel, nonapoptotic, presynaptic function of the BAD-BAX-caspase-3 cascade.SIGNIFICANCE STATEMENT Despite the importance of synaptic vesicles for neurons, little is known about how the size of synaptic vesicle pools is maintained under basal conditions and regulated by neural activity. This study identifies a new mechanism for the control of synaptic vesicle pools, and a new, nonapoptotic function of the BAD-BAX-caspase-3 pathway in presynaptic terminals. Additionally, it indicates that autophagy is not only a homeostatic mechanism to maintain the integrity of cells and tissues, but also a process engaged by neural activity to regulate synaptic vesicle pools for optimal synaptic responses, learning, and memory.
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Kim S, Kwon M, Hwang Y, Yoon J, Park S, Kang HC. Stress-induced NEDDylation promotes cytosolic protein aggregation through HDAC6 in a p62-dependent manner. iScience 2021; 24:102146. [PMID: 33665565 PMCID: PMC7903351 DOI: 10.1016/j.isci.2021.102146] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 01/07/2021] [Accepted: 02/01/2021] [Indexed: 02/08/2023] Open
Abstract
Stress-coupled NEDDylation potentially regulates the aggregation of nuclear proteins, which could protect the nuclear ubiquitin-proteasome system from proteotoxic stress. However, it remains unclear how NEDDylation controls protein-aggregation responses to diverse stress conditions. Here, we identified HDAC6 as a direct NEDD8-binding partner that regulates the formation of aggresome-like bodies (ALBs) containing NEDDylated cytosolic protein aggregates during ubiquitin stress. HDAC6 colocalizes with stress-induced ALBs, and HDAC6 inhibition suppresses ALBs formation, but not stress-induced NEDDylation, suggesting that HDAC6 carries NEDDylated-proteins to generate ALBs. Then, we monitored the ALBs-associated proteostasis network and found that p62 directly controls ALBs formation as an acceptor of NEDDylated cytosolic aggregates. Interestingly, we also observed that ALBs are highly condensed in chloroquine-treated cells with impaired autophagic flux, indicating that ALBs rely on autophagy. Collectively, our data suggest that NEDD8, HDAC6, and p62 are involved in the management of proteotoxic stress by forming cytosolic ALBs coupled to the aggresome-autophagy flux. NEDD8 directly binds to HDAC6 and regulates the formation of aggresome-like body (ALB) HDAC6 carries NEDDylated cytosolic protein aggregates into ALBs under ubiquitin stress p62 directly controls ALBs formation as an acceptor of NEDDylated cytosolic aggregates The NEDD8-HDAC6-p62 axis controls proteostasis by forming ALB-coupled autophagy
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Affiliation(s)
- Soyeon Kim
- Department of Physiology, Ajou University School of Medicine, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea.,Department of Biomedical Sciences, Graduate School of Ajou University, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea
| | - Mira Kwon
- Department of Physiology, Ajou University School of Medicine, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea.,Department of Biomedical Sciences, Graduate School of Ajou University, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea
| | - Yiseul Hwang
- Department of Physiology, Ajou University School of Medicine, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea.,Department of Biomedical Sciences, Graduate School of Ajou University, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea
| | - Junghyun Yoon
- Department of Physiology, Ajou University School of Medicine, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea.,Department of Biomedical Sciences, Graduate School of Ajou University, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea
| | - Sangwook Park
- Department of Physiology, Ajou University School of Medicine, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea.,Department of Biomedical Sciences, Graduate School of Ajou University, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea
| | - Ho Chul Kang
- Department of Physiology, Ajou University School of Medicine, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea.,Department of Biomedical Sciences, Graduate School of Ajou University, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi 16499, Republic of Korea
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38
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Sheng Y, Jiang Y, Yang Y, Li X, Qiu J, Wu J, Cheng L, Han J. CNA2Subpathway: identification of dysregulated subpathway driven by copy number alterations in cancer. Brief Bioinform 2021; 22:6076935. [PMID: 33423051 DOI: 10.1093/bib/bbaa413] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/25/2020] [Accepted: 12/15/2020] [Indexed: 12/14/2022] Open
Abstract
Biological pathways reflect the key cellular mechanisms that dictate disease states, drug response and altered cellular function. The local areas of pathways are defined as subpathways (SPs), whose dysfunction has been reported to be associated with the occurrence and development of cancer. With the development of high-throughput sequencing technology, identifying dysfunctional SPs by using multi-omics data has become possible. Moreover, the SPs are not isolated in the biological system but interact with each other. Here, we propose a network-based calculated method, CNA2Subpathway, to identify dysfunctional SPs is driven by somatic copy number alterations (CNAs) in cancer through integrating pathway topology information, multi-omics data and SP crosstalk. This provides a novel way of SP analysis by using the SP interactions in the system biological level. Using data sets from breast cancer and head and neck cancer, we validate the effectiveness of CNA2Subpathway in identifying cancer-relevant SPs driven by the somatic CNAs, which are also shown to be associated with cancer immune and prognosis of patients. We further compare our results with five pathway or SP analysis methods based on CNA and gene expression data without considering SP crosstalk. With these analyses, we show that CNA2Subpathway could help to uncover dysfunctional SPs underlying cancer via the use of SP crosstalk. CNA2Subpathway is developed as an R-based tool, which is freely available on GitHub (https://github.com/hanjunwei-lab/CNA2Subpathway).
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Affiliation(s)
- Yuqi Sheng
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Ying Jiang
- College of Basic Medical Science, Heilongjiang University of Chinese Medicine, China
| | - Yang Yang
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Xiangmei Li
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Jiayue Qiu
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Jiashuo Wu
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Liang Cheng
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Junwei Han
- College of Bioinformatics Science and Technology, Harbin Medical University, China
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Du J, Dong Z, Tan L, Tan M, Zhang F, Zhang K, Pan G, Li C, Shi S, Zhang Y, Liu Y, Cui H. Tubeimoside I Inhibits Cell Proliferation and Induces a Partly Disrupted and Cytoprotective Autophagy Through Rapidly Hyperactivation of MEK1/2-ERK1/2 Cascade via Promoting PTP1B in Melanoma. Front Cell Dev Biol 2020; 8:607757. [PMID: 33392197 PMCID: PMC7773826 DOI: 10.3389/fcell.2020.607757] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 11/26/2020] [Indexed: 12/20/2022] Open
Abstract
Tubeimoside I (TBMS1), also referred to as tubeimoside A, is a natural compound extracted from the plant Tu Bei Mu (Bolbostemma paniculatum), which is a traditional Chinese herb used to treat multiple diseases for more than 1,000 years. Studies in recent years reported its anti-tumor activity in several cancers. However, whether it is effective in melanoma remains unknown. In the current study, we discovered that TBMS1 treatment inhibited melanoma cell proliferation in vitro and tumorigenecity in vivo. Besides, we also observed that TBMS1 treatment induced a partly disrupted autophagy, which still remained a protective role, disruption of which by chloroquine (CQ) or 3-methyladenine (3-MA) enhanced TBMS1-induced cell proliferation inhibition. CQ combined with TBMS1 even induced cellular apoptosis. BRAF(V600E) mutation and its continuously activated downstream MEK1/2-ERK1/2 cascade are found in 50% of melanomas and are important for malanomagenesis. However, hyperactivating MEK1/2-ERK1/2 cascade can also inhibit tumor growth. Intriguingly, we observed that TBMS1 rapidly hyperactivated MEK1/2-ERK1/2, inhibition of which by its inhibitor SL-327 rescued the anti-cancerous effects of TBMS1. Besides, the targets of TBMS1 were predicted by the ZINC Database based on its structure. It is revealed that protein-tyrosine phosphatase 1B (PTP1B) might be one of the targets of TBMS1. Inhibition of PTP1B by its selective inhibitor TCS401 or shRNA rescued the anti-cancerous effects of TBMS1 in melanoma cells. These results indicated that TBMS1 might activate PTP1B, which further hyperactivates MEK1/2-ERK1/2 cascade, thereby inhibiting cell proliferation in melanoma. Our results provided the potentiality of TBMS1 as a drug candidate for melanoma therapy and confirmed that rapidly hyperactivating an oncogenic signaling pathway may also be a promising strategy for cancer treatment.
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Affiliation(s)
- Juan Du
- Department of Dermatology, The Third Hospital of Hebei Medical University, Shijiazhuang, China
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, College of Sericulture and Textile and Biomass, Chongqing, China
| | - Zhen Dong
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, College of Sericulture and Textile and Biomass, Chongqing, China
- Cancer Center, Reproductive Medicine Center, Medical Research Institute, Southwest University, Chongqing, China
- NHC Key Laboratory of Birth Defects and Reproductive Health (Chongqing Key Laboratory of Birth Defects and Reproductive Health, Chongqing Population and Family Planning Science and Technology Research Institute), Chongqing, China
| | - Li Tan
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, College of Sericulture and Textile and Biomass, Chongqing, China
- Cancer Center, Reproductive Medicine Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Mengqin Tan
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, College of Sericulture and Textile and Biomass, Chongqing, China
- Cancer Center, Reproductive Medicine Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Fang Zhang
- Department of Nuclear Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Kui Zhang
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, College of Sericulture and Textile and Biomass, Chongqing, China
- Cancer Center, Reproductive Medicine Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Guangzhao Pan
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, College of Sericulture and Textile and Biomass, Chongqing, China
- Cancer Center, Reproductive Medicine Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Chongyang Li
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, College of Sericulture and Textile and Biomass, Chongqing, China
- Cancer Center, Reproductive Medicine Center, Medical Research Institute, Southwest University, Chongqing, China
| | - Shaomin Shi
- Department of Dermatology, The Third Hospital of Hebei Medical University, Shijiazhuang, China
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, College of Sericulture and Textile and Biomass, Chongqing, China
| | - Yanli Zhang
- Department of Dermatology, The Third Hospital of Hebei Medical University, Shijiazhuang, China
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, College of Sericulture and Textile and Biomass, Chongqing, China
| | - Yaling Liu
- Department of Dermatology, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Hongjuan Cui
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, College of Sericulture and Textile and Biomass, Chongqing, China
- Cancer Center, Reproductive Medicine Center, Medical Research Institute, Southwest University, Chongqing, China
- NHC Key Laboratory of Birth Defects and Reproductive Health (Chongqing Key Laboratory of Birth Defects and Reproductive Health, Chongqing Population and Family Planning Science and Technology Research Institute), Chongqing, China
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Regmi S, Raut PK, Pathak S, Shrestha P, Park PH, Jeong JH. Enhanced viability and function of mesenchymal stromal cell spheroids is mediated via autophagy induction. Autophagy 2020; 17:2991-3010. [PMID: 33206581 DOI: 10.1080/15548627.2020.1850608] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Mesenchymal stromal cells (MSCs) have received attention as promising therapeutic agents for the treatment of various diseases. However, poor post-transplantation viability is a major hurdle in MSC-based therapy, despite encouraging results in many inflammatory disorders. Recently, three dimensional (3D)-cultured MSCs (MSC3D) were shown to have higher cell survival and enhanced anti-inflammatory effects, although the underlying mechanisms have not yet been elucidated. In this study, we investigated the molecular mechanisms by which MSC3D gain the potential for enhanced cell viability. Herein, we found that macroautophagy/autophagy was highly induced and ROS production was suppressed in MSC3D as compared to 2D-cultured MSCs (MSC2D). Interestingly, inhibition of autophagy induction caused decreased cell viability and increased apoptotic activity in MSC3D. Furthermore, modulation of ROS production was closely related to the survival and apoptosis of MSC3D. We also observed that HMOX1 (heme oxygenase 1) was significantly up-regulated in MSC3D. In addition, gene silencing of HMOX1 caused upregulation of ROS production and suppression of the genes related to autophagy. Moreover, inhibition of HIF1A (hypoxia inducible factor 1 subunit alpha) caused suppression of HMOX1 expression in MSC3D, indicating that the HIF1A-HMOX1 axis plays a crucial role in the modulation of ROS production and autophagy induction in MSC3D. Finally, the critical role of autophagy induction on improved therapeutic effects of MSC3D was further verified in dextran sulfate sodium (DSS)-induced murine colitis. Taken together, these results indicated that autophagy activation and modulation of ROS production mediated via the HIF1A-HMOX1 axis play pivotal roles in enhancing the viability of MSC3D.List of abbreviations:3D: three dimensional; 3MA: 3 methlyadenine; AMPK: AMP-activated protein kinase; Baf A1: bafilomycin A1; CFSE: carboxyfluorescein succinimidyl ester; CoCl2: cobalt chloride; CoPP: cobalt protoporphyrin; DSS: dextran sulfate sodium; ECM: extracellular matrix; FOXO3/FOXO3A: forkhead box O3; HIF1A: hypoxia inducible factor 1 subunit alpha; HMOX1/HO-1: heme oxygenase 1; HSCs: hematopoietic stem cells; IL1A/IL-1α: interleukin 1 alpha; IL1B/IL-1β: interleukin 1 beta; IL8: interleukin 8; KEAP1: kelch like ECH associated protein 1; LAMP1: lysosomal associated membrane protein 1; LAMP2: lysosomal associated membrane protein 2; MSC2D: 2D-cultured MSCs; MSC3D: 3D-cultured MSCs; MSCs: mesenchymal stromal cells; NFE2L2/NRF2: nuclear factor, erythroid 2 like 2; PGE2: prostaglandin E2; PIK3C3/VPS34: phosphatidylinositol 3-kinase catalytic subunit type 3; PINK1: PTEN induced kinase 1; ROS: reactive oxygen species; siRNA: small interfering RNA; SIRT1: sirtuin 1; SOD2: superoxide dismutase 2; SQSTM1/p62: sequestosome 1; TGFB/TGF-β: transforming growth factor beta.
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Affiliation(s)
- Shobha Regmi
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea.,Department of Radiology, Stanford Medicine, Palo Alto, CA, USA
| | - Pawan Kumar Raut
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea
| | - Shiva Pathak
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea.,Division of Blood and Marrow Transplantation, Stanford University School of Medicine, Stanford, CA, USA
| | - Prakash Shrestha
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea
| | - Pil-Hoon Park
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea.,Research Institute of Cell Culture, Yeungnam University, Gyeongsan, South Korea
| | - Jee-Heon Jeong
- College of Pharmacy, Yeungnam University, Gyeongbuk, Gyeongsan, South Korea
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Tong CWS, Wu MMX, Yan VW, Cho WCS, To KKW. Repurposing loperamide to overcome gefitinib resistance by triggering apoptosis independent of autophagy induction in KRAS mutant NSCLC cells. Cancer Treat Res Commun 2020; 25:100229. [PMID: 33152554 DOI: 10.1016/j.ctarc.2020.100229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/17/2020] [Accepted: 10/23/2020] [Indexed: 12/01/2022]
Abstract
BACKGROUND Gefitinib is an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) approved for first-line treatment of non-small cell lung cancer (NSCLC) with sensitizing EGFR mutations. However, NSCLC patients bearing mutant KRAS are inherently unresponsive to gefitinib. Defective autophagy was proposed to mediate resistance to EGFR-TKIs. In this study, the reversal of primary resistance to gefitinib in NSCLC by putative autophagy inducers was investigated. MATERIALS AND METHODS A few putative autophagy inducers were investigated in NSCLC cells harboring KRAS or EGFR mutations. Quantitative real-time PCR and Western blot analysis were used to evaluate expression of autophagy-related genes and proteins. Sulforhodamine B assay was used to evaluate cytotoxicity of drug combinations. Flow cytometric asssays were used to study apoptotic and cell cycle effects. RESULTS The antidiarrheal agent loperamide was identified as an autophagy inducer. Loperamide promoted the formation of autophagosomes and it potentiated the cytotoxic effect of gefitinib specifically in NSCLC cells bearing mutant KRAS and wild-type EGFR. Gefitinib-loperamide combination enhanced apoptosis and G1 cell cycle arrest, both of which could not be reversed by pharmacological autophagy inhibitor (3-methyladenine). Moreover, synergistic anticancer effect of gefitinib-loperamide combination was observed in both autophagy-proficient (Atg5-wild type) and -deficient (Atg5-knockout) mouse embryonic fibroblasts. Loperamide overcome gefitinib resistance in NSCLC harboring mutant KRAS and wild-type EGFR through increased apoptosis but independent of autophagy induction. CONCLUSION Loperamide could be repurposed to overcome primary resistance to gefitinib in KRAS-mutation bearing NSCLC as it also helps relieve the common side effect of diarrhea caused by EGFR-TKIs.
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Affiliation(s)
- Christy W S Tong
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Mia M X Wu
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Vivi W Yan
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - William C S Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong SAR, China
| | - Kenneth K W To
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China.
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42
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New insights on the role of autophagy in the pathogenesis and treatment of melanoma. Mol Biol Rep 2020; 47:9021-9032. [DOI: 10.1007/s11033-020-05886-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 09/30/2020] [Indexed: 02/07/2023]
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43
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Wang X, Song Y, Liu B, Hang W, Li R, Cui H, Li R, Jia X. Enhancement of astaxanthin biosynthesis in Haematococcus pluvialis via inhibition of autophagy by 3-methyladenine under high light. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101991] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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44
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Bosc C, Broin N, Fanjul M, Saland E, Farge T, Courdy C, Batut A, Masoud R, Larrue C, Skuli S, Espagnolle N, Pagès JC, Carrier A, Bost F, Bertrand-Michel J, Tamburini J, Récher C, Bertoli S, Mansat-De Mas V, Manenti S, Sarry JE, Joffre C. Autophagy regulates fatty acid availability for oxidative phosphorylation through mitochondria-endoplasmic reticulum contact sites. Nat Commun 2020; 11:4056. [PMID: 32792483 PMCID: PMC7426880 DOI: 10.1038/s41467-020-17882-2] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 07/22/2020] [Indexed: 12/14/2022] Open
Abstract
Autophagy has been associated with oncogenesis with one of its emerging key functions being its contribution to the metabolism of tumors. Therefore, deciphering the mechanisms of how autophagy supports tumor cell metabolism is essential. Here, we demonstrate that the inhibition of autophagy induces an accumulation of lipid droplets (LD) due to a decrease in fatty acid β-oxidation, that leads to a reduction of oxidative phosphorylation (OxPHOS) in acute myeloid leukemia (AML), but not in normal cells. Thus, the autophagic process participates in lipid catabolism that supports OxPHOS in AML cells. Interestingly, the inhibition of OxPHOS leads to LD accumulation with the concomitant inhibition of autophagy. Mechanistically, we show that the disruption of mitochondria–endoplasmic reticulum (ER) contact sites (MERCs) phenocopies OxPHOS inhibition. Altogether, our data establish that mitochondria, through the regulation of MERCs, controls autophagy that, in turn finely tunes lipid degradation to fuel OxPHOS supporting proliferation and growth in leukemia. How autophagy supports tumor cell metabolism is not fully clear. Here, the authors show that autophagy regulates lipid availability to support mitochondrial oxidative metabolism through mitochondria-endoplasmic reticulum contact sites, necessary for cell proliferation in AML.
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Affiliation(s)
- Claudie Bosc
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France.,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France
| | - Nicolas Broin
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France.,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France
| | - Marjorie Fanjul
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France.,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France
| | - Estelle Saland
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France.,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France
| | - Thomas Farge
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France.,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France
| | - Charly Courdy
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France.,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France
| | - Aurélie Batut
- MetaToul-MetaboHUB, National Infrastructure of Metabolomics and Fluxomics, Toulouse, F-31077, France
| | - Rawand Masoud
- Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, Centre de Recherche en Cancérologie de Marseille, Marseille, France
| | - Clément Larrue
- Translational Research Centre in Onco-hematology, Faculty of Medicine, University of Geneva, 1211, Geneva, Switzerland
| | - Sarah Skuli
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France.,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France.,Division of Hematology and Oncology, Hospital of The University of Pennsylvania, Philadelphia, PA, USA
| | - Nicolas Espagnolle
- STROMALab, Université de Toulouse, CNRS ERL5311, EFS, INP-ENVT, Inserm U1031, UPS, Toulouse, France
| | - Jean-Christophe Pagès
- STROMALab, Université de Toulouse, CNRS ERL5311, EFS, INP-ENVT, Inserm U1031, UPS, Toulouse, France
| | - Alice Carrier
- Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, Centre de Recherche en Cancérologie de Marseille, Marseille, France
| | - Frédéric Bost
- Inserm U1065, C3M, Team Cellular and Molecular Physiopathology of Obesity and Diabetes, Université Nice Côte d'Azur, Inserm, Nice, France
| | - Justine Bertrand-Michel
- MetaToul-MetaboHUB, National Infrastructure of Metabolomics and Fluxomics, Toulouse, F-31077, France
| | - Jérôme Tamburini
- Translational Research Centre in Onco-hematology, Faculty of Medicine, University of Geneva, 1211, Geneva, Switzerland.,Université de Paris, Institut Cochin, CNRS UMR8104, INSERM U1016, F-75014, Paris, France
| | - Christian Récher
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France.,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France.,Service d'hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, Toulouse, France
| | - Sarah Bertoli
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France.,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France.,Service d'hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, Toulouse, France
| | - Véronique Mansat-De Mas
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France.,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France.,Laboratoire d'Hématologie, Institut Universitaire du Cancer de Toulouse-Oncopole, Toulouse, France
| | - Stéphane Manenti
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France.,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France
| | - Jean-Emmanuel Sarry
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France. .,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France.
| | - Carine Joffre
- Cancer Research Center of Toulouse (CRCT), INSERM U1037, CNRS ERL5294, University of Toulouse, Toulouse, France. .,Equipe labellisée, La Ligue contre le Cancer, Toulouse, France.
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45
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Koepke L, Winter B, Grenzner A, Regensburger K, Engelhart S, van der Merwe JA, Krebs S, Blum H, Kirchhoff F, Sparrer KMJ. An improved method for high-throughput quantification of autophagy in mammalian cells. Sci Rep 2020; 10:12241. [PMID: 32699244 PMCID: PMC7376206 DOI: 10.1038/s41598-020-68607-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 06/25/2020] [Indexed: 12/20/2022] Open
Abstract
Autophagy is a cellular homeostatic pathway with functions ranging from cytoplasmic protein turnover to immune defense. Therapeutic modulation of autophagy has been demonstrated to positively impact the outcome of autophagy-dysregulated diseases such as cancer or microbial infections. However, currently available agents lack specificity, and new candidates for drug development or potential cellular targets need to be identified. Here, we present an improved method to robustly detect changes in autophagy in a high-throughput manner on a single cell level, allowing effective screening. This method quantifies eGFP-LC3B positive vesicles to accurately monitor autophagy. We have significantly streamlined the protocol and optimized it for rapid quantification of large numbers of cells in little time, while retaining accuracy and sensitivity. Z scores up to 0.91 without a loss of sensitivity demonstrate the robustness and aptness of this approach. Three exemplary applications outline the value of our protocols and cell lines: (I) Examining autophagy modulating compounds on four different cell types. (II) Monitoring of autophagy upon infection with e.g. measles or influenza A virus. (III) CRISPR/Cas9 screening for autophagy modulating factors in T cells. In summary, we offer ready-to-use protocols to generate sensitive autophagy reporter cells and quantify autophagy in high-throughput assays.
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Affiliation(s)
- Lennart Koepke
- Institute of Molecular Virology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Benjamin Winter
- Institute of Molecular Virology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Alexander Grenzner
- Institute of Molecular Virology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Kerstin Regensburger
- Institute of Molecular Virology, Ulm University Medical Center, 89081, Ulm, Germany
| | - Susanne Engelhart
- Institute of Molecular Virology, Ulm University Medical Center, 89081, Ulm, Germany
| | | | - Stefan Krebs
- Gene Center and Laboratory for Functional Genome Analysis, Ludwig-Maximilians-University, 81377, Munich, Germany
| | - Helmut Blum
- Gene Center and Laboratory for Functional Genome Analysis, Ludwig-Maximilians-University, 81377, Munich, Germany
| | - Frank Kirchhoff
- Institute of Molecular Virology, Ulm University Medical Center, 89081, Ulm, Germany
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46
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de la Fuente S, Sansa A, Hidalgo I, Vivancos N, Romero-Guevara R, Garcera A, Soler RM. Calpain system is altered in survival motor neuron-reduced cells from in vitro and in vivo spinal muscular atrophy models. Cell Death Dis 2020; 11:487. [PMID: 32587237 PMCID: PMC7316821 DOI: 10.1038/s41419-020-2688-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 06/09/2020] [Accepted: 06/12/2020] [Indexed: 12/31/2022]
Abstract
Spinal muscular atrophy (SMA) is a severe neuromuscular disorder caused by loss of the survival motor neuron 1 (SMN1) gene. SMA is characterized by the degeneration of spinal cord motoneurons (MNs), progressive skeletal muscle atrophy, and weakness. The cellular and molecular mechanisms causing MN loss of function are only partially known. Recent advances in SMA research postulate the role of calpain protease regulating survival motor neuron (SMN) protein and the positive effect on SMA phenotype of treatment with calpain inhibitors. We analyzed the level of calpain pathway members in mice and human cellular SMA models. Results indicate an increase of calpain activity in SMN-reduced MNs. Spinal cord analysis of SMA mice treated with calpeptin, a calpain inhibitor, showed an increase of SMN, calpain, and its endogenous inhibitor calpastatin in MNs. Finally, in vitro calpeptin treatment prevented microtubule-associated protein 1A/1B-light chain 3 (LC3) increase in MNs neurites, indicating that calpain inhibition may reduce autophagosome accumulation in neuron prolongations, but not in soma. Thus, our results show that calpain activity is increased in SMA MNs and its inhibition may have a beneficial effect on SMA phenotype through the increase of SMN in spinal cord MNs.
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Affiliation(s)
- Sandra de la Fuente
- Neuronal Signaling Unit, Experimental Medicine Department, Universitat de Lleida-IRBLleida, Rovira Roure, 80, Lleida, 25198, Spain
| | - Alba Sansa
- Neuronal Signaling Unit, Experimental Medicine Department, Universitat de Lleida-IRBLleida, Rovira Roure, 80, Lleida, 25198, Spain
| | - Iván Hidalgo
- Neuronal Signaling Unit, Experimental Medicine Department, Universitat de Lleida-IRBLleida, Rovira Roure, 80, Lleida, 25198, Spain
| | - Nuria Vivancos
- Neuronal Signaling Unit, Experimental Medicine Department, Universitat de Lleida-IRBLleida, Rovira Roure, 80, Lleida, 25198, Spain
| | - Ricardo Romero-Guevara
- Metabolic Physiopathology Group, Experimental Medicine Department, Universitat de Lleida-IRBLleida, Lleida, Spain
| | - Ana Garcera
- Neuronal Signaling Unit, Experimental Medicine Department, Universitat de Lleida-IRBLleida, Rovira Roure, 80, Lleida, 25198, Spain
| | - Rosa M Soler
- Neuronal Signaling Unit, Experimental Medicine Department, Universitat de Lleida-IRBLleida, Rovira Roure, 80, Lleida, 25198, Spain.
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47
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Shen H, Zhu H, Panja D, Gu Q, Li Z. Autophagy controls the induction and developmental decline of NMDAR-LTD through endocytic recycling. Nat Commun 2020; 11:2979. [PMID: 32532981 PMCID: PMC7293213 DOI: 10.1038/s41467-020-16794-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 05/18/2020] [Indexed: 01/08/2023] Open
Abstract
NMDA receptor-dependent long-term depression (NMDAR-LTD) is a long-lasting form of synaptic plasticity. Its expression is mediated by the removal of AMPA receptors from postsynaptic membranes. Under basal conditions, endocytosed AMPA receptors are rapidly recycled back to the plasma membrane. In NMDAR-LTD, however, they are diverted to late endosomes for degradation. The mechanism for this switch is largely unclear. Additionally, the inducibility of NMDAR-LTD is greatly reduced in adulthood. The underlying mechanism and physiological significance of this phenomenon are elusive. Here, we report that autophagy inhibition is essential for the induction and developmental dampening of NMDAR-LTD. Autophagy is inhibited during NMDAR-LTD to decrease endocytic recycling. Autophagy inhibition is both necessary and sufficient for LTD induction. In adulthood, autophagy is up-regulated to make LTD induction harder, thereby preventing the adverse effect of excessive LTD on memory consolidation. These findings reveal the unrecognized functions of autophagy in synaptic plasticity, endocytic recycling, and memory. NMDA receptor-dependent long-term depression (NMDAR-LTD) is a form of synaptic plasticity mediated by reduced recycling of AMPA receptors to the plasma membrane. Here the authors show that autophagy is a regulator of this endocytic recycling and autophagy upregulation dampens NMDAR-LTD in adulthood.
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Affiliation(s)
- Hongmei Shen
- Section on Synapse Development and Plasticity, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, 20892, USA.,Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education & Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China.,Nantong Brain Hospital & Mental Health Center Affiliated to Nantong University, Nantong University, Nantong, 226005, China
| | - Huiwen Zhu
- Section on Synapse Development and Plasticity, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Debabrata Panja
- Section on Synapse Development and Plasticity, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Qinhua Gu
- Section on Synapse Development and Plasticity, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Zheng Li
- Section on Synapse Development and Plasticity, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, 20892, USA.
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48
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Interleukin-22 Inhibits Respiratory Syncytial Virus Production by Blocking Virus-Mediated Subversion of Cellular Autophagy. iScience 2020; 23:101256. [PMID: 32580124 PMCID: PMC7317237 DOI: 10.1016/j.isci.2020.101256] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/28/2020] [Accepted: 06/05/2020] [Indexed: 12/18/2022] Open
Abstract
Respiratory syncytial virus (RSV) infection can cause severe bronchiolitis in infants requiring hospitalization, whereas the elderly and immunocompromised are prone to RSV-induced pneumonia. RSV primarily infects lung epithelial cells. Given that no vaccine against RSV is currently available, we tested the ability of the epithelial-barrier protective cytokine interleukin-22 (IL-22) to control RSV production. When used in a therapeutic modality, IL-22 efficiently blunted RSV production from infected human airway and alveolar epithelial cells and IL-22 administration drastically reduced virus titer in the lungs of infected newborn mice. RSV infection resulted in increased expression of LC3B, a key component of the cellular autophagic machinery, and knockdown of LC3B ablated virus production. RSV subverted LC3B with evidence of co-localization and caused a significant reduction in autophagic flux, both reversed by IL-22 treatment. Our findings inform a previously unrecognized anti-viral effect of IL-22 that can be harnessed to prevent RSV-induced severe respiratory disease. RSV infection of lung epithelial cells subverts the cellular autophagic machinery RSV infection inhibits autophagic flux in infected cells IL-22 inhibits RSV production from human lung epithelial cells and in neonatal mice IL-22 blocks RSV-LC3B co-localization and restores cellular autophagic flux
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49
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Ghosh P, Vidal C, Dey S, Zhang L. Mitochondria Targeting as an Effective Strategy for Cancer Therapy. Int J Mol Sci 2020; 21:E3363. [PMID: 32397535 PMCID: PMC7247703 DOI: 10.3390/ijms21093363] [Citation(s) in RCA: 134] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/30/2020] [Accepted: 05/06/2020] [Indexed: 12/14/2022] Open
Abstract
Mitochondria are well known for their role in ATP production and biosynthesis of macromolecules. Importantly, increasing experimental evidence points to the roles of mitochondrial bioenergetics, dynamics, and signaling in tumorigenesis. Recent studies have shown that many types of cancer cells, including metastatic tumor cells, therapy-resistant tumor cells, and cancer stem cells, are reliant on mitochondrial respiration, and upregulate oxidative phosphorylation (OXPHOS) activity to fuel tumorigenesis. Mitochondrial metabolism is crucial for tumor proliferation, tumor survival, and metastasis. Mitochondrial OXPHOS dependency of cancer has been shown to underlie the development of resistance to chemotherapy and radiotherapy. Furthermore, recent studies have demonstrated that elevated heme synthesis and uptake leads to intensified mitochondrial respiration and ATP generation, thereby promoting tumorigenic functions in non-small cell lung cancer (NSCLC) cells. Also, lowering heme uptake/synthesis inhibits mitochondrial OXPHOS and effectively reduces oxygen consumption, thereby inhibiting cancer cell proliferation, migration, and tumor growth in NSCLC. Besides metabolic changes, mitochondrial dynamics such as fission and fusion are also altered in cancer cells. These alterations render mitochondria a vulnerable target for cancer therapy. This review summarizes recent advances in the understanding of mitochondrial alterations in cancer cells that contribute to tumorigenesis and the development of drug resistance. It highlights novel approaches involving mitochondria targeting in cancer therapy.
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Affiliation(s)
| | | | | | - Li Zhang
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX 75080, USA; (P.G.); (C.V.); (S.D.)
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50
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Porras-Agüera JA, Moreno-García J, González-Jiménez MDC, Mauricio JC, Moreno J, García-Martínez T. Autophagic Proteome in Two Saccharomyces cerevisiae Strains During Second Fermentation for Sparkling Wine Elaboration. Microorganisms 2020; 8:microorganisms8040523. [PMID: 32268562 PMCID: PMC7232233 DOI: 10.3390/microorganisms8040523] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/01/2020] [Accepted: 04/04/2020] [Indexed: 11/16/2022] Open
Abstract
A correlation between autophagy and autolysis has been proposed in order to acceleratethe acquisition of wine organoleptic properties during sparkling wine elaboration. In this context, aproteomic analysis was carried out in two industrial Saccharomyces cerevisiae strains (P29,conventional sparkling wine strain and G1, implicated in sherry wine elaboration) with the aim ofstudying the autophagy-related proteome and comparing the effect of CO2 overpressure duringsparkling wine elaboration. In general, a detrimental effect of pressure and second fermentationdevelopment on autophagy-related proteome was observed in both strains, although it was morepronounced in flor yeast strain G1. Proteins mainly involved in autophagy regulation andautophagosome formation in flor yeast G1, and those required for vesicle nucleation and expansionin P29 strain, highlighted in sealed bottle. Proteins Sec2 and Sec18 were detected 3-fold underpressure conditions in P29 and G1 strains, respectively. Moreover, 'fingerprinting' obtained frommultivariate data analysis established differences in autophagy-related proteome between strainsand conditions. Further research is needed to achieve more solid conclusions and design strategiesto promote autophagy for an accelerated autolysis, thus reducing cost and time production, as wellas acquisition of good organoleptic properties.
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Affiliation(s)
- Juan Antonio Porras-Agüera
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, C6 building, Campus de Rabanales, University of Córdoba, E-14014 Córdoba, Spain; (J.A.P.-A.); (J.M.-G.); (M.d.C.G.-J.); (T.G.-M.)
| | - Jaime Moreno-García
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, C6 building, Campus de Rabanales, University of Córdoba, E-14014 Córdoba, Spain; (J.A.P.-A.); (J.M.-G.); (M.d.C.G.-J.); (T.G.-M.)
| | - María del Carmen González-Jiménez
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, C6 building, Campus de Rabanales, University of Córdoba, E-14014 Córdoba, Spain; (J.A.P.-A.); (J.M.-G.); (M.d.C.G.-J.); (T.G.-M.)
| | - Juan Carlos Mauricio
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, C6 building, Campus de Rabanales, University of Córdoba, E-14014 Córdoba, Spain; (J.A.P.-A.); (J.M.-G.); (M.d.C.G.-J.); (T.G.-M.)
- Correspondence: ; Tel.: +34-(957)-218640; Fax: +34-(957)-218650
| | - Juan Moreno
- Department of Agricultural Chemistry, Agrifood Campus of International Excellence ceiA3, C3 building, Campus de Rabanales, University of Córdoba, E-14014 Córdoba, Spain;
| | - Teresa García-Martínez
- Department of Microbiology, Agrifood Campus of International Excellence ceiA3, C6 building, Campus de Rabanales, University of Córdoba, E-14014 Córdoba, Spain; (J.A.P.-A.); (J.M.-G.); (M.d.C.G.-J.); (T.G.-M.)
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