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Ai X, Yu H, Cai Y, Guan Y. Interactions Between Extracellular Vesicles and Autophagy in Neuroimmune Disorders. Neurosci Bull 2024:10.1007/s12264-024-01183-5. [PMID: 38421513 DOI: 10.1007/s12264-024-01183-5] [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: 05/29/2023] [Accepted: 11/15/2023] [Indexed: 03/02/2024] Open
Abstract
Neuroimmune disorders, such as multiple sclerosis, neuromyelitis optica spectrum disorder, myasthenia gravis, and Guillain-Barré syndrome, are characterized by the dysfunction of both the immune system and the nervous system. Increasing evidence suggests that extracellular vesicles and autophagy are closely associated with the pathogenesis of these disorders. In this review, we summarize the current understanding of the interactions between extracellular vesicles and autophagy in neuroimmune disorders and discuss their potential diagnostic and therapeutic applications. Here we highlight the need for further research to fully understand the mechanisms underlying these disorders, and to develop new diagnostic and therapeutic strategies.
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Affiliation(s)
- Xiwen Ai
- Department of Neurology, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, 200127, China
| | - Haojun Yu
- Department of Neurology, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, 200127, China
| | - Yu Cai
- Department of Neurology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA.
| | - Yangtai Guan
- Department of Neurology, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, 200127, China.
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Al-kuraishy HM, Jabir MS, Al-Gareeb AI, Saad HM, Batiha GES, Klionsky DJ. The beneficial role of autophagy in multiple sclerosis: Yes or No? Autophagy 2024; 20:259-274. [PMID: 37712858 PMCID: PMC10813579 DOI: 10.1080/15548627.2023.2259281] [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: 05/01/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/16/2023] Open
Abstract
Multiple sclerosis (MS) is a chronic progressive demyelinating disease of the central nervous system (CNS) due to an increase of abnormal peripherally auto-reactive T lymphocytes which elicit autoimmunity. The main pathophysiology of MS is myelin sheath damage by immune cells and a defect in the generation of myelin by oligodendrocytes. Macroautophagy/autophagy is a critical degradation process that eliminates dysfunctional or superfluous cellular components. Autophagy has the property of a double-edged sword in MS in that it may have both beneficial and detrimental effects on MS neuropathology. Therefore, this review illustrates the protective and harmful effects of autophagy with regard to this disease. Autophagy prevents the progression of MS by reducing oxidative stress and inflammatory disorders. In contrast, over-activated autophagy is associated with the progression of MS neuropathology and in this case the use of autophagy inhibitors may alleviate the pathogenesis of MS. Furthermore, autophagy provokes the activation of different immune and supporting cells that play an intricate role in the pathogenesis of MS. Autophagy functions in the modulation of MS neuropathology by regulating cell proliferation related to demyelination and remyelination. Autophagy enhances remyelination by increasing the activity of oligodendrocytes, and astrocytes. However, autophagy induces demyelination by activating microglia and T cells. In conclusion, specific autophagic activators of oligodendrocytes, and astrocytes, and specific autophagic inhibitors of dendritic cells (DCs), microglia and T cells induce protective effects against the pathogenesis of MS.Abbreviations: ALS: amyotrophic lateral sclerosis; APCs: antigen-presenting cells; BBB: blood-brain barrier; CSF: cerebrospinal fluid; CNS: central nervous system; DCs: dendritic cells; EAE: experimental autoimmune encephalomyelitis; ER: endoplasmic reticulum; LAP: LC3-associated phagocytosis; MS: multiple sclerosis; NCA: non-canonical autophagy; OCBs: oligoclonal bands; PBMCs: peripheral blood mononuclear cells; PD: Parkinson disease; ROS: reactive oxygen species; UPR: unfolded protein response.
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Affiliation(s)
- Hayder M. Al-kuraishy
- Department of Clinical Pharmacology and Medicine, College of Medicine, Mustansiriyah University, Iraq, Baghdad
| | - Majid S. Jabir
- Department of Applied Science, University of Technology, Baghdad, Iraq
| | - Ali I. Al-Gareeb
- Department of Clinical Pharmacology and Medicine, College of Medicine, Mustansiriyah University, Iraq, Baghdad
| | - Hebatallah M. Saad
- Department of Pathology, Faculty of Veterinary Medicine, Matrouh University, Matrouh, Egypt
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, El Beheira, Egypt
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Wang W, Yang W, Sun J, Yao H, Wang L, Song L. A autophagy related-like protein 16-1 promotes the formation of autophagosomes and autolysosomes in antibacterial immune response of Pacific oyster Crassostrea gigas. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 147:104748. [PMID: 37276929 DOI: 10.1016/j.dci.2023.104748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/07/2023]
Abstract
Autophagy related 16-like (ATG16L) protein is a core autophagy protein, which promotes the extension of autophagosome membrane through microtubule-associated protein light chain 3 (LC3). In the present study, an ATG16L was identified from oyster Crassostrea gigas (defined as CgATG16L1). The full-length cDNA of CgATG16L1 was of 3184 bp with an open reading frame of 1650 bp that encoded a polypeptide of 549 amino acids. There was an ATG5-interacting motif (AFIM) domain, a coiled-coil (CC) domain and seven tryptophan-aspartic acid 40 (WD40) repeats in CgATG16L1. ATG16L1 mRNA was expressed in all the examined tissues with the highest expression in haemolymph (11.22-fold of that in hepatopancreas, p < 0.05). The mRNA expressions of CgATG16L1 in haemocytes increased significantly at 3, 6, 12, 24 and 72 h after lipopolysaccharide (LPS) stimulation, which were 81.15-fold, 24.95-fold, 6.02-fold, 3.90-fold and 5.97-fold (p < 0.05) of that in control group, respectively. The green positive signals of CgATG16L1 protein and the red positive signals of CgLC3 protein were dotted in the cytoplasm of agranulocytes, semi-granulocytes and granulocytes. The co-localization of CgATG16L1 and CgLC3 was observed in haemocytes after Vibrio splendidus stimulation. In CgATG16L1-RNAi oysters, the number of autophagosomes and autolysosomes in haemocytes was reduced. All these results suggested that CgATG16L1 participated in the bacteria-induced autophagy process in the haemocytes of oyster response to bacteria invasion.
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Affiliation(s)
- Wei Wang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Wenwen Yang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Jiejie Sun
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Hongsheng Yao
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai, 519000, China; Laboratory of Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China; Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Diseases Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai, 519000, China; Laboratory of Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China; Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Diseases Prevention and Control, Dalian Ocean University, Dalian, 116023, China.
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Sestan M, Kifer N, Arsov T, Cook M, Ellyard J, Vinuesa CG, Jelusic M. The Role of Genetic Risk Factors in Pathogenesis of Childhood-Onset Systemic Lupus Erythematosus. Curr Issues Mol Biol 2023; 45:5981-6002. [PMID: 37504294 PMCID: PMC10378459 DOI: 10.3390/cimb45070378] [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: 06/22/2023] [Revised: 07/09/2023] [Accepted: 07/12/2023] [Indexed: 07/29/2023] Open
Abstract
The pathogenesis of childhood-onset systemic lupus erythematosus (cSLE) is complex and not fully understood. It involves three key factors: genetic risk factors, epigenetic mechanisms, and environmental triggers. Genetic factors play a significant role in the development of the disease, particularly in younger individuals. While cSLE has traditionally been considered a polygenic disease, it is now recognized that in rare cases, a single gene mutation can lead to the disease. Although these cases are uncommon, they provide valuable insights into the disease mechanism, enhance our understanding of pathogenesis and immune tolerance, and facilitate the development of targeted treatment strategies. This review aims to provide a comprehensive overview of both monogenic and polygenic SLE, emphasizing the implications of specific genes in disease pathogenesis. By conducting a thorough analysis of the genetic factors involved in SLE, we can improve our understanding of the underlying mechanisms of the disease. Furthermore, this knowledge may contribute to the identification of effective biomarkers and the selection of appropriate therapies for individuals with SLE.
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Affiliation(s)
- Mario Sestan
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
| | - Nastasia Kifer
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
| | - Todor Arsov
- Faculty of Medical Sciences, University Goce Delchev, 2000 Shtip, North Macedonia
- The Francis Crick Institute, London NW1 1AT, UK
| | - Matthew Cook
- Department of Immunology and Infectious Diseases, The John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
- Department of Medicine, University of Cambridge, Cambridge CB2 1TN, UK
| | - Julia Ellyard
- Department of Immunology and Infectious Diseases, The John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
| | | | - Marija Jelusic
- Department of Paediatrics, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
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Abstract
Macroautophagy/autophagy, a fundamental cell process for nutrient recycling and defense against pathogens (termed xenophagy), is crucial to human health. ATG16L2 (autophagy related 16 like 2) is an autophagic protein and a paralog of ATG16L1. Both proteins are implicated in similar diseases such as cancer and other chronic diseases; however, most autophagy studies to date have primarily focused on the function of ATG16L1, with ATG16L2 remaining uncharacterized and understudied. Overexpression of ATG16L2 has been reported in various cancers including colorectal, gastric, and prostate carcinomas, whereas altered methylation of ATG16L2 has been associated with lung cancer formation and poorer response to therapy in leukemia. In addition, ATG16L2 polymorphisms have been implicated in a range of other diseases including inflammatory bowel diseases and neurodegenerative disorders. Despite this likely role in human health, the function of this enigmatic protein in autophagy remains unknown. Here, we review current studies on ATG16L2 and collate evidence that suggests that this protein is a potential modulator of autophagy as well as the implications this has on pathogenesis.Abbreviations: ATG5: autophagy related 5; ATG12: autophagy related 12; ATG16L1: autophagy related 16 like 1; ATG16L2: autophagy related 16 like 2; CD: Crohn disease; IBD: inflammatory bowel diseases; IRGM: immunity related GTPase M; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; PE: phosphatidylethanolamine; RB1CC1: RB1 inducible coiled-coil 1; SLE: systemic lupus erythematosus; WIPI2B: WD repeat domain, phosphoinositide interacting 2B.
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Affiliation(s)
- Laurence Don Wai Luu
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, New South Wales, Australia,CONTACT Laurence Don Wai Luu School of Biotechnology and Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, New South Wales, Australia
| | - Nadeem O. Kaakoush
- School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Natalia Castaño-Rodríguez
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, New South Wales, Australia,Natalia Castaño-Rodríguez School of Biotechnology and Biomolecular Sciences, Faculty of Science, Faculty of Science, University of New South Wales, Sydney, New South Wales, Australia
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Zhang J, Ding X, Peng K, Jia Z, Yang J. Identification of biomarkers for immunotherapy response in prostate cancer and potential drugs to alleviate immunosuppression. Aging (Albany NY) 2022; 14:4839-4857. [PMID: 35680563 PMCID: PMC9217695 DOI: 10.18632/aging.204115] [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: 02/14/2022] [Accepted: 05/19/2022] [Indexed: 11/25/2022]
Abstract
Background: Immunotherapy has a significant effect on the treatment of many tumor types. However, prostate cancers generally fail to show significant responses to immunotherapy owing to their immunosuppressive microenvironments. To sustain progress towards more effective immunotherapy for prostate cancer, comprehensive analyses of the genetic characteristics of the immune microenvironment and novel therapeutic strategies are required. Methods: The transcriptome profiles of patients with prostate cancer were obtained from GEO and processed with the TIDE algorithm to predict their responses to immunotherapy. Next, the significant differentially expressed genes (DEGs) between the responder and non-responder groups were identified and used to compute the co-expression modules by WGCNA. Then, co-expression networks were constructed and survival analysis was applied to hub genes. Finally, drug candidates to alleviate immunosuppression were filtered in prostate cancer using GSEA based on hub genes. Results: In total, we identified 2758 significant DEGs and constructed 16 co-expression modules, seven of which were significantly correlated with the immune response score. In total, 133 hub genes were identified, of which 13 were significantly associated with prostate cancer prognosis. Co-expression networks of hub genes were constructed with KMT2B at the center. Finally, six candidate drugs for prostate cancer immunotherapy were identified in PC3 and LNCaP cell lines. Conclusions: We obtained datasets from multiple platforms, performed integrated bioinformatic analysis to identify 133 hub genes and 13 biomarkers of an immunotherapy response, and six candidate drugs were filtered to inhibit the immunosuppressive tumor microenvironment, to ultimately improve patient responses to immunotherapy in prostate cancer.
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Affiliation(s)
- Jinpeng Zhang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zheng Zhou University, Zhengzhou, Henan, China.,Henan Institute of Urology, Tumor Molecular Biology Key Laboratory of Zhengzhou, The First Affiliated Hospital of Zhengzhou University, Zheng Zhou University, Zhengzhou, Henan, China.,Department of Urology, Henan Province People's Hospital, Zhengzhou University People's Hospital, Zheng Zhou University, Zhengzhou, Henan, China
| | - Xiaohui Ding
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zheng Zhou University, Zhengzhou, Henan, China.,Henan Institute of Urology, Tumor Molecular Biology Key Laboratory of Zhengzhou, The First Affiliated Hospital of Zhengzhou University, Zheng Zhou University, Zhengzhou, Henan, China
| | - Kun Peng
- Department of Urology, Henan Province People's Hospital, Zhengzhou University People's Hospital, Zheng Zhou University, Zhengzhou, Henan, China
| | - Zhankui Jia
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zheng Zhou University, Zhengzhou, Henan, China.,Henan Institute of Urology, Tumor Molecular Biology Key Laboratory of Zhengzhou, The First Affiliated Hospital of Zhengzhou University, Zheng Zhou University, Zhengzhou, Henan, China
| | - Jinjian Yang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zheng Zhou University, Zhengzhou, Henan, China.,Henan Institute of Urology, Tumor Molecular Biology Key Laboratory of Zhengzhou, The First Affiliated Hospital of Zhengzhou University, Zheng Zhou University, Zhengzhou, Henan, China
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Wang D, Yuan T, Liu J, Wen Z, Shen Y, Tang J, Wang Z, Wu X. ATG16L2 inhibits NLRP3 inflammasome activation through promoting ATG5‐12‐16L1 complex assembly and autophagy. Eur J Immunol 2022; 52:1321-1334. [PMID: 35426127 DOI: 10.1002/eji.202149764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 03/24/2022] [Accepted: 04/13/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Dongyang Wang
- Department of Gastrointestinal Surgery Renji Hospital Affiliated Shanghai Jiao Tong University School of Medicine Shanghai 200025 China
| | - Tianli Yuan
- Department of Gastrointestinal Surgery Renji Hospital Affiliated Shanghai Jiao Tong University School of Medicine Shanghai 200025 China
| | - Jiamin Liu
- Hongqiao International Institute of Medicine Shanghai Tongren Hospital/Faculty of Basic Medicine Shanghai Institute of Immunology Department of Immunology and Microbiology Key Laboratory of Cell Differentiation and Apoptosis of the Chinese Ministry of Education Shanghai Jiao Tong University School of Medicine Shanghai 200025 China
| | - Zhoujin Wen
- Department of Gastrointestinal Surgery Renji Hospital Affiliated Shanghai Jiao Tong University School of Medicine Shanghai 200025 China
| | - Yuguang Shen
- Department of Gastrointestinal Surgery Renji Hospital Affiliated Shanghai Jiao Tong University School of Medicine Shanghai 200025 China
| | - Jian Tang
- Department of Gastrointestinal Surgery Renji Hospital Affiliated Shanghai Jiao Tong University School of Medicine Shanghai 200025 China
| | - Zheng Wang
- Department of Gastrointestinal Surgery Renji Hospital Affiliated Shanghai Jiao Tong University School of Medicine Shanghai 200025 China
| | - Xuefeng Wu
- Hongqiao International Institute of Medicine Shanghai Tongren Hospital/Faculty of Basic Medicine Shanghai Institute of Immunology Department of Immunology and Microbiology Key Laboratory of Cell Differentiation and Apoptosis of the Chinese Ministry of Education Shanghai Jiao Tong University School of Medicine Shanghai 200025 China
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Improper Proteostasis: Can It Serve as Biomarkers for Neurodegenerative Diseases? Mol Neurobiol 2022; 59:3382-3401. [PMID: 35305242 DOI: 10.1007/s12035-022-02775-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 02/19/2022] [Indexed: 10/18/2022]
Abstract
Cells synthesize new proteins after multiple molecular decisions. Damage of existing proteins, accumulation of abnormal proteins, and basic requirement of new proteins trigger protein quality control (PQC)-based alternative strategies to cope against proteostasis imbalance. Accumulation of misfolded proteins is linked with various neurodegenerative disorders. However, how deregulated components of this quality control system and their lack of general mechanism-based long-term changes can serve as biomarkers for neurodegeneration remains largely unexplored. Here, our article summarizes the chief findings, which may facilitate the search of novel and relevant proteostasis mechanism-based biomarkers associated with neuronal disorders. Understanding the abnormalities of PQC coupled molecules as possible biomarkers can help to determine neuronal fate and their contribution to the aetiology of several nervous system disorders.
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Tang J, Wang D, Shen Y, Xue F. ATG16L2 overexpression is associated with a good prognosis in colorectal cancer. J Gastrointest Oncol 2021; 12:2192-2202. [PMID: 34790384 DOI: 10.21037/jgo-21-495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 09/10/2021] [Indexed: 12/15/2022] Open
Abstract
Background Colorectal cancer (CRC) is a highly aggressive, high-incidence malignancy. Several biomarkers associated with the prognosis and metastasis of CRC have been identified. Our study aimed to evaluate the value of ATG16L2 protein as a new biomarker to predict the prognosis of patients with CRC. Methods One hundred and fifty-two pairs of paraffin-embedded tissue samples and 19 fresh tissue samples were collected from the Department of Pathology of Renji Hospital, Shanghai Jiao Tong University School of Medicine. All the patients had undergone surgery in the hospital's Department of Gastrointestinal Surgery between 2013 and 2014. The samples were arranged on two tissue microarrays of normal (n=152) and tumor (n=152) tissue. The tissues were immunostained and graded as low (<50%) or high (≥50%) according to the proportion of ATG16L2-positive cells. An overexpression plasmid was constructed and transfected into RKO cells, and the cell proliferation and migration ability were detected. Finally, Flag-ATG16L2 RKO cells subcutaneous injection into the skin of BALB/c nude mice to determine the effects of ATG16L2 on the growth of subcutaneously transplanted tumors. Results ATG16L2 expression was negatively correlated with lymph node metastasis (P<0.05) and tumor-node-metastasis stage (P<0.05). High ATG16L2 expression in tumor tissues was related to a good prognosis, with patients with a high expression of ATG16L2 displaying longer overall survival. In vitro, overexpression of ATG16L2 in a CRC cell line RKO cell led to a decrease in cell proliferation but had no obvious influence on cell migration. In vivo, the mice in the Flag-NC (as control) group exhibited faster tumor growth than those in the experiment group. Conclusions ATG16L2 expression is positively associated with patient prognosis in CRC. Further, ATG16L2 can negatively affect CRC cell proliferation in vitro and in vivo.
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Affiliation(s)
- Jian Tang
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Dongyang Wang
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yuguang Shen
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Feng Xue
- Department of Liver Surgery and Liver Transplantation, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Yang G, Van Kaer L. Therapeutic Targeting of Immune Cell Autophagy in Multiple Sclerosis: Russian Roulette or Silver Bullet? Front Immunol 2021; 12:724108. [PMID: 34531871 PMCID: PMC8438236 DOI: 10.3389/fimmu.2021.724108] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 08/18/2021] [Indexed: 12/15/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS) in which the immune system damages the protective insulation surrounding nerve fibers that project from neurons. The pathological hallmark of MS is multiple areas of myelin loss accompanied by inflammation within the CNS, resulting in loss of cognitive function that ultimately leads to paralysis. Recent studies in MS have focused on autophagy, a cellular self-eating process, as a potential target for MS treatment. Here, we review the contribution of immune cell autophagy to the pathogenesis of experimental autoimmune encephalomyelitis (EAE), the prototypic animal model of MS. A better understanding of the role of autophagy in different immune cells to EAE might inform the development of novel therapeutic approaches in MS and other autoimmune and inflammatory diseases.
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Affiliation(s)
- Guan Yang
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Luc Van Kaer
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, United States
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Jafari A, Babajani A, Rezaei-Tavirani M. Multiple Sclerosis Biomarker Discoveries by Proteomics and Metabolomics Approaches. Biomark Insights 2021; 16:11772719211013352. [PMID: 34017167 PMCID: PMC8114757 DOI: 10.1177/11772719211013352] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 04/05/2021] [Indexed: 12/22/2022] Open
Abstract
Multiple sclerosis (MS) is an autoimmune inflammatory disorder of the central nervous system (CNS) resulting in demyelination and axonal loss in the brain and spinal cord. The precise pathogenesis and etiology of this complex disease are still a mystery. Despite many studies that have been aimed to identify biomarkers, no protein marker has yet been approved for MS. There is urgently needed for biomarkers, which could clarify pathology, monitor disease progression, response to treatment, and prognosis in MS. Proteomics and metabolomics analysis are powerful tools to identify putative and novel candidate biomarkers. Different human compartments analysis using proteomics, metabolomics, and bioinformatics approaches has generated new information for further clarification of MS pathology, elucidating the mechanisms of the disease, finding new targets, and monitoring treatment response. Overall, omics approaches can develop different therapeutic and diagnostic aspects of complex disorders such as multiple sclerosis, from biomarker discovery to personalized medicine.
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Affiliation(s)
- Ameneh Jafari
- Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amirhesam Babajani
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Mo JJ, Zhang W, Wen QW, Wang TH, Qin W, Zhang Z, Huang H, Cen H, Wu XD. Genetic association analysis of ATG16L1 rs2241880, rs6758317 and ATG16L2 rs11235604 polymorphisms with rheumatoid arthritis in a Chinese population. Int Immunopharmacol 2021; 93:107378. [PMID: 33529915 DOI: 10.1016/j.intimp.2021.107378] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 12/17/2020] [Accepted: 01/07/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVE This study was performed to test whether ATG16L1 rs2241880, rs6758317 and ATG16L2 rs11235604 polymorphisms were associated with RA and further examine the genetic interaction between ATG16L1 and ATG16L2 in RA among a Chinese population. METHODS A total of 594 RA patients and 604 healthy controls were included, and the genetic polymorphisms were genotyped based on HI-SNP technology. RESULTS Significant associations of ATG16L1 rs2241880 polymorphism with RA (T/T versus C/T + C/C, OR = 1.32, 95% CI 1.04-1.67, P = 0.02), cyclic citrullinated peptide (CCP)-positive RA (genotype comparison, P = 5.38 × 10-3; T/T versus C/T + C/C, OR = 1.45, 95% CI 1.12-1.87, P = 4.86 × 10-3) and rheumatoid factor (RF)-positive RA (genotype comparison, P = 0.03; T versus C, OR = 1.23, 95% CI 1.01-1.49, P = 0.04; T/T versus C/T + C/C, OR = 1.44, 95% CI 1.10-1.88, P = 7.62 × 10-3) were found. Significant genetic interaction between ATG16L1 rs2241880 and ATG16L2 rs11235604 was associated RA (P = 0.03), and significant genetic interaction between ATG16L1 rs6758317 and ATG16L2 rs11235604 was associated with RA (P = 7.57 × 10-3), CCP-positive RA (P = 0.01) and RF-positive RA (P = 0.01). Consistently, stratification analysis found that significant associations of RA with ATG16L1 rs2241880, rs6758317 polymorphisms were only detected among individuals carrying C/T genotype of the ATG16L2 rs11235604 polymorphism. CONCLUSIONS Our results indicated that ATG16L1 rs2241880 polymorphism was associated with RA in Chinese population, and provided evidence for genetic interaction between ATG16L1 and ATG16L2 in determing the development of RA, highlighting the involvement of autophagy in the pathogenesis of RA.
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Affiliation(s)
- Ji-Jun Mo
- Department of Physical Examination, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Ningbo, Zhejiang, PR China
| | - Wei Zhang
- Department of Preventive Medicine, Medical School of Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang 315211, PR China; Zhejiang Provincial Key Laboratory of Pathophysiology, Medical School of Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang 315211, PR China
| | - Qin-Wen Wen
- Department of Rheumatology, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, 59 Liuting Road, Ningbo, Zhejiang 315010, PR China
| | - Ting-Hui Wang
- Department of Rheumatology, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, 59 Liuting Road, Ningbo, Zhejiang 315010, PR China
| | - Wen Qin
- Department of Rheumatology, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, 59 Liuting Road, Ningbo, Zhejiang 315010, PR China
| | - Zhen Zhang
- Department of Rheumatology, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, 59 Liuting Road, Ningbo, Zhejiang 315010, PR China
| | - Hua Huang
- Department of Rheumatology, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, 59 Liuting Road, Ningbo, Zhejiang 315010, PR China
| | - Han Cen
- Department of Preventive Medicine, Medical School of Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang 315211, PR China; Zhejiang Provincial Key Laboratory of Pathophysiology, Medical School of Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang 315211, PR China.
| | - Xiu-Di Wu
- Department of Rheumatology, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, 59 Liuting Road, Ningbo, Zhejiang 315010, PR China.
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13
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Nutma E, Marzin MC, Cillessen SA, Amor S. Autophagy in white matter disorders of the CNS: mechanisms and therapeutic opportunities. J Pathol 2020; 253:133-147. [PMID: 33135781 PMCID: PMC7839724 DOI: 10.1002/path.5576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/21/2020] [Accepted: 10/26/2020] [Indexed: 12/17/2022]
Abstract
Autophagy is a constitutive process that degrades, recycles and clears damaged proteins or organelles, yet, despite activation of this pathway, abnormal proteins accumulate in neurons in neurodegenerative diseases and in oligodendrocytes in white matter disorders. Here, we discuss the role of autophagy in white matter disorders, including neurotropic infections, inflammatory diseases such as multiple sclerosis, and in hereditary metabolic disorders and acquired toxic‐metabolic disorders. Once triggered due to cell stress, autophagy can enhance cell survival or cell death that may contribute to oligodendrocyte damage and myelin loss in white matter diseases. For some disorders, the mechanisms leading to myelin loss are clear, whereas the aetiological agent and pathological mechanisms are unknown for other myelin disorders, although emerging studies indicate that a common mechanism underlying these disorders is dysregulation of autophagic pathways. In this review we discuss the alterations in the autophagic process in white matter disorders and the potential use of autophagy‐modulating agents as therapeutic approaches in these pathological conditions. © 2020 The Authors. The Journal of Pathology published by John Wiley & Sons, Ltd. on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Erik Nutma
- Department of Pathology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands
| | - Manuel C Marzin
- Department of Pathology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands
| | - Saskia Agm Cillessen
- Department of Pathology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands
| | - Sandra Amor
- Department of Pathology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands.,Department of Neuroscience and Trauma, Blizard Institute, Barts and the London School of Medicine & Dentistry, Queen Mary University of London, London, UK
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14
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Pik3c3 deficiency in myeloid cells imparts partial resistance to experimental autoimmune encephalomyelitis associated with reduced IL-1β production. Cell Mol Immunol 2020; 18:2024-2039. [PMID: 33235386 DOI: 10.1038/s41423-020-00589-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 11/03/2020] [Indexed: 12/13/2022] Open
Abstract
The PIK3C3/VPS34 subunit of the class III phosphatidylinositol 3-kinase (PtdIns3K) complex plays a role in both canonical and noncanonical autophagy, key processes that control immune-cell responsiveness to a variety of stimuli. Our previous studies found that PIK3C3 is a critical regulator that controls the development, homeostasis, and function of dendritic and T cells. In this study, we investigated the role of PIK3C3 in myeloid cell biology using myeloid cell-specific Pik3c3-deficient mice. We found that Pik3c3-deficient macrophages express increased surface levels of major histocompatibility complex (MHC) class I and class II molecules. In addition, myeloid cell-specific Pik3c3 ablation in mice caused a partial impairment in the homeostatic maintenance of macrophages expressing the apoptotic cell uptake receptor TIM-4. Pik3c3 deficiency caused phenotypic changes in myeloid cells that were dependent on the early machinery (initiation/nucleation) of the classical autophagy pathway. Consequently, myeloid cell-specific Pik3c3-deficient animals showed significantly reduced severity of experimental autoimmune encephalomyelitis (EAE), a primarily CD4+ T-cell-mediated mouse model of multiple sclerosis (MS). This disease protection was associated with reduced accumulation of myelin-specific CD4+ T cells in the central nervous system and decreased myeloid cell IL-1β production. Further, administration of SAR405, a selective PIK3C3 inhibitor, delayed disease progression. Collectively, our studies establish PIK3C3 as an important regulator of macrophage functions and myeloid cell-mediated regulation of EAE. Our findings also have important implications for the development of small-molecule inhibitors of PIK3C3 as therapeutic modulators of MS and other autoimmune diseases.
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15
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Hassanpour M, Hajihassani F, Hiradfar A, Aghamohammadzadeh N, Rahbarghazi R, Safaie N, Nouri M, Panahi Y. Real-state of autophagy signaling pathway in neurodegenerative disease; focus on multiple sclerosis. JOURNAL OF INFLAMMATION-LONDON 2020; 17:6. [PMID: 32082082 PMCID: PMC7014934 DOI: 10.1186/s12950-020-0237-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 01/27/2020] [Indexed: 12/12/2022]
Abstract
The occurrence of neurodegenerative disease is increasingly raised. From physiopathological aspect, the emergence of auto-reactive antibodies against the nervous system antigens contributes to de-myelination in Multiple sclerosis (MS). These features cause the nervous system dysfunction. The follow-up of molecular alterations could give us a real-state vision about intracellular status during pathological circumstances. In this review, we focus on the autophagic response during MS progression and further understand the relationship between autophagy and MS and its modulatory effect on the MS evolution. The authors reviewed studies published on the autophagy status in neurodegenerative disease and on the autophagy modulation in MS prognosis, diagnosis, and possible therapies. The inevitable role of autophagy was shown in the early-stage progression of MS. Due to critical role of autophagy in different stage of cell activity in nervous system, the distinct role of autophagy should not be neglected in the development, pathogenesis, and treatment of MS.
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Affiliation(s)
- Mehdi Hassanpour
- 1Department of Clinical Biochemistry and Laboratory Medicine, Tabriz University of Medical Sciences, 5166614756, Imam Reza St., Golgasht St, Tabriz, Iran.,2Stem Cell And Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,3Clinical Pharmacy Department, Faculty of Pharmacy, Baqiyatallah University of Medical Sciences, Tehran, 1435916471 Iran
| | - Fateme Hajihassani
- 4Department of Health Management, School of Management and Medical informatics, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amirataollah Hiradfar
- 5Pediatric Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Reza Rahbarghazi
- 7Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,8Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nasser Safaie
- 9Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Nouri
- 1Department of Clinical Biochemistry and Laboratory Medicine, Tabriz University of Medical Sciences, 5166614756, Imam Reza St., Golgasht St, Tabriz, Iran.,2Stem Cell And Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yunes Panahi
- 3Clinical Pharmacy Department, Faculty of Pharmacy, Baqiyatallah University of Medical Sciences, Tehran, 1435916471 Iran
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16
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Khor B, Conway KL, Omar AS, Biton M, Haber AL, Rogel N, Baxt LA, Begun J, Kuballa P, Gagnon JD, Lassen KG, Regev A, Xavier RJ. Distinct Tissue-Specific Roles for the Disease-Associated Autophagy Genes ATG16L2 and ATG16L1. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2019; 203:1820-1829. [PMID: 31451676 PMCID: PMC6761021 DOI: 10.4049/jimmunol.1800419] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 07/30/2019] [Indexed: 12/19/2022]
Abstract
The clear role of autophagy in human inflammatory diseases such as Crohn disease was first identified by genome-wide association studies and subsequently dissected in multiple mechanistic studies. ATG16L1 has been particularly well studied in knockout and hypomorph settings as well as models recapitulating the Crohn disease-associated T300A polymorphism. Interestingly, ATG16L1 has a single homolog, ATG16L2, which is independently implicated in diseases, including Crohn disease and systemic lupus erythematosus. However, the contribution of ATG16L2 to canonical autophagy pathways and other cellular functions is poorly understood. To better understand its role, we generated and analyzed the first, to our knowledge, ATG16L2 knockout mouse. Our results show that ATG16L1 and ATG16L2 contribute very distinctly to autophagy and cellular ontogeny in myeloid, lymphoid, and epithelial lineages. Dysregulation of any of these lineages could contribute to complex diseases like Crohn disease and systemic lupus erythematosus, highlighting the value of examining cell-specific effects. We also identify a novel genetic interaction between ATG16L2 and epithelial ATG16L1. These findings are discussed in the context of how these genes may contribute distinctly to human disease.
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Affiliation(s)
- Bernard Khor
- Gastrointestinal Unit and Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114; .,Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114.,The Broad Institute of Massachusetts Institute of Technology and Harvard, 7 Cambridge Center, Cambridge, MA 02142; and.,Pathology Service, Massachusetts General Hospital, Boston, MA 02114
| | - Kara L Conway
- Gastrointestinal Unit and Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.,Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.,The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Abdifatah S Omar
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.,The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Moshe Biton
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.,The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Adam L Haber
- The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Noga Rogel
- The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Leigh A Baxt
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.,The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Jakob Begun
- Gastrointestinal Unit and Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.,Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.,The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Petric Kuballa
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.,The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - John D Gagnon
- The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Kara G Lassen
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.,The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Aviv Regev
- The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Ramnik J Xavier
- Gastrointestinal Unit and Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114; .,Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114.,The Broad Institute of Massachusetts Institute of Technology and Harvard, 7 Cambridge Center, Cambridge, MA 02142; and
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17
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Singh V, Tripathi A, Dutta R. Proteomic Approaches to Decipher Mechanisms Underlying Pathogenesis in Multiple Sclerosis Patients. Proteomics 2019; 19:e1800335. [PMID: 31119864 PMCID: PMC6690771 DOI: 10.1002/pmic.201800335] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 05/15/2019] [Indexed: 12/13/2022]
Abstract
Multiple sclerosis (MS) is a chronic inflammatory demyelinating and neurodegenerative disease of the central nervous system (CNS). The cause of MS is unknown, with no effective therapies available to halt the progressive neurological disability. Development of new and improvement of existing therapeutic strategies therefore require a better understanding of MS pathogenesis, especially during the progressive phase of the disease. This can be achieved through development of biomarkers that can help to identify disease pathophysiology and monitor disease progression. Proteomics is a powerful and promising tool to accelerate biomarker detection and contribute to novel therapeutics. In this review, an overview of how proteomic technology using CNS tissues and biofluids from MS patients has provided important clues to the pathogenesis of MS is provided. Current publications, pitfalls, as well as directions of future research involving proteomic approaches to understand the pathogenesis of MS are discussed.
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Affiliation(s)
- Vaibhav Singh
- Department of Neurosciences, Cleveland Clinic, Cleveland, OH, 44195, USA
| | - Ajai Tripathi
- Department of Neurosciences, Cleveland Clinic, Cleveland, OH, 44195, USA
| | - Ranjan Dutta
- Department of Neurosciences, Cleveland Clinic, Cleveland, OH, 44195, USA
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18
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Caberlotto L, Nguyen TP, Lauria M, Priami C, Rimondini R, Maioli S, Cedazo-Minguez A, Sita G, Morroni F, Corsi M, Carboni L. Cross-disease analysis of Alzheimer's disease and type-2 Diabetes highlights the role of autophagy in the pathophysiology of two highly comorbid diseases. Sci Rep 2019; 9:3965. [PMID: 30850634 PMCID: PMC6408545 DOI: 10.1038/s41598-019-39828-5] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 01/29/2019] [Indexed: 12/24/2022] Open
Abstract
Evidence is accumulating that the main chronic diseases of aging Alzheimer's disease (AD) and type-2 diabetes mellitus (T2DM) share common pathophysiological mechanisms. This study aimed at applying systems biology approaches to increase the knowledge of the shared molecular pathways underpinnings of AD and T2DM. We analysed transcriptomic data of post-mortem AD and T2DM human brains to obtain disease signatures of AD and T2DM and combined them with protein-protein interaction information to construct two disease-specific networks. The overlapping AD/T2DM network proteins were then used to extract the most representative Gene Ontology biological process terms. The expression of genes identified as relevant was studied in two AD models, 3xTg-AD and ApoE3/ApoE4 targeted replacement mice. The present transcriptomic data analysis revealed a principal role for autophagy in the molecular basis of both AD and T2DM. Our experimental validation in mouse AD models confirmed the role of autophagy-related genes. Among modulated genes, Cyclin-Dependent Kinase Inhibitor 1B, Autophagy Related 16-Like 2, and insulin were highlighted. In conclusion, the present investigation revealed autophagy as the central dys-regulated pathway in highly co-morbid diseases such as AD and T2DM allowing the identification of specific genes potentially involved in disease pathophysiology which could become novel targets for therapeutic intervention.
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Affiliation(s)
- Laura Caberlotto
- The Microsoft Research, University of Trento Centre for Computational Systems Biology (COSBI), Rovereto, Italy.
- Aptuit an Evotec company Drug Design and Discovery, Verona, Italy.
| | - T-Phuong Nguyen
- The Microsoft Research, University of Trento Centre for Computational Systems Biology (COSBI), Rovereto, Italy
- Life Sciences Research Unit, University of Luxembourg, Esch-sur-Alzette, Luxembourg
- Megeno S.A.6A, avenue des Hauts-FourneauxL-4362 Esch-sur-Alzette, Esch-sur-Alzette, Luxembourg
| | - Mario Lauria
- The Microsoft Research, University of Trento Centre for Computational Systems Biology (COSBI), Rovereto, Italy
- Department of Mathematics, University of Trento, Povo, Trento, Italy
| | - Corrado Priami
- The Microsoft Research, University of Trento Centre for Computational Systems Biology (COSBI), Rovereto, Italy
| | - Roberto Rimondini
- Department of Medical and Surgical Science, Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Silvia Maioli
- Department of Neurobiology, Care Sciences and Society, Division of Neurogeriatrics, Karolinska Institutet, Stockholm, Sweden
| | - Angel Cedazo-Minguez
- Department of Neurobiology, Care Sciences and Society, Division of Neurogeriatrics, Karolinska Institutet, Stockholm, Sweden
| | - Giulia Sita
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Fabiana Morroni
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Mauro Corsi
- Aptuit, an Evotec company, Drug Design and Discovery, Verona, Italy
| | - Lucia Carboni
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, Bologna, Italy
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19
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Zhang L, Liu B. Targeting Autophagy with Small-Molecule Modulators in Immune-Related Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1209:181-203. [PMID: 31728871 DOI: 10.1007/978-981-15-0606-2_11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Autophagy, a highly conserved and multistep lysosomal degradation process, plays a pivotal role in maintaining cellular and physiological homeostasis. Of note, autophagy controls intracellular homeostasis and cell responses to stresses by regulating the self-renewal, maturation, and survival of immune cells. And dysregulation of autophagy in immune cells may contribute to the inflammatory disorders and defect in immune responses against invasive pathogens. Accumulating evidence have indicated that dysregulated autophagy participates in the pathology of immune-related diseases. Therefore, targeting autophagy might represent a promising therapeutic strategy for treatment of immune-related diseases. In this chapter, we focus on discussing the link between autophagy and pathogenesis of immune-related diseases, as well as the dysregulation of autophagy-related signaling pathways, in different diseases. Moreover, we highlight the therapeutic potential of currently used small-molecule modulators of autophagy for treatment of immune-related diseases and illustrate the mechanisms of these small-molecule modulators.
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Affiliation(s)
- Lan Zhang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Bo Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China.
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20
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Xiong Q, Li W, Li P, Yang M, Wu C, Eichinger L. The Role of ATG16 in Autophagy and The Ubiquitin Proteasome System. Cells 2018; 8:cells8010002. [PMID: 30577509 PMCID: PMC6356889 DOI: 10.3390/cells8010002] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 02/07/2023] Open
Abstract
Autophagy and the ubiquitin proteasome system (UPS) are the two major cellular degradation pathways, which are critical for the maintenance of cell homeostasis. The two pathways differ in their mechanisms and clients. The evolutionary conserved ATG16 plays a key role in autophagy and appears to link autophagy with the UPS. Here, we review the role of ATG16 in different species. We summarize the current knowledge of its functions in autophagosome membrane expansion and autophagosome formation, in Crohn’s disease, and in bacterial sequestration. In addition, we provide information on its autophagy-independent functions and its role in the crosstalk between autophagy and the UPS.
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Affiliation(s)
- Qiuhong Xiong
- Institute of Biomedical Sciences, Shanxi University, No.92 Wucheng Road, Taiyuan 030006, China.
| | - Wenjing Li
- Institute of Biomedical Sciences, Shanxi University, No.92 Wucheng Road, Taiyuan 030006, China.
| | - Ping Li
- Institute of Biomedical Sciences, Shanxi University, No.92 Wucheng Road, Taiyuan 030006, China.
| | - Min Yang
- Institute of Biomedical Sciences, Shanxi University, No.92 Wucheng Road, Taiyuan 030006, China.
| | - Changxin Wu
- Institute of Biomedical Sciences, Shanxi University, No.92 Wucheng Road, Taiyuan 030006, China.
| | - Ludwig Eichinger
- Center for Biochemistry, Medical Faculty, University of Cologne, Joseph-Stelzmann-Str. 52, 50931 Cologne, Germany.
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21
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Bridel C, Eijlers AJC, van Wieringen WN, Koel-Simmelink M, Leurs CE, Schoonheim MM, Killestein J, Teunissen CE. No Plasmatic Proteomic Signature at Clinical Disease Onset Associated With 11 Year Clinical, Cognitive and MRI Outcomes in Relapsing-Remitting Multiple Sclerosis Patients. Front Mol Neurosci 2018; 11:371. [PMID: 30429773 PMCID: PMC6220078 DOI: 10.3389/fnmol.2018.00371] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 09/18/2018] [Indexed: 01/06/2023] Open
Abstract
Background: The clinical course of relapsing-remitting multiple sclerosis (RRMS) is highly heterogeneous and prognostic biomarkers at time of diagnosis are lacking. Objective: We investigated the predictive value of the plasma proteome at time of diagnosis in RRMS patients. Methods: The plasma proteome was interrogated using a novel aptamer-based proteomics platform, which allows to measure the levels of a predefined set of 1310 proteins. Results: In 67 clinically and radiologically well characterized RRMS patients, we found no association between the plasma proteome at diagnosis and clinical, cognitive or MRI outcomes after 11 years. Conclusions: Proteomics studies on cerebrospinal fluid may be better suited to identify prognostic biomarkers in early RRMS.
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Affiliation(s)
- Claire Bridel
- Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, Netherlands
| | - Anand J C Eijlers
- Department of Anatomy and Neurosciences, MS Center Amsterdam, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, Netherlands
| | - Wessel N van Wieringen
- Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, The Netherlands and Department of Mathematics, VU University, Amsterdam, Netherlands
| | - Marleen Koel-Simmelink
- Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, Netherlands
| | - Cyra E Leurs
- Department of Neurology, MS Center Amsterdam, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, Netherlands
| | - Menno M Schoonheim
- Department of Anatomy and Neurosciences, MS Center Amsterdam, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, Netherlands
| | - Joep Killestein
- Department of Neurology, MS Center Amsterdam, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, Netherlands
| | - Charlotte E Teunissen
- Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, Netherlands
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22
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Welderufael BG, Løvendahl P, de Koning DJ, Janss LLG, Fikse WF. Genome-Wide Association Study for Susceptibility to and Recoverability From Mastitis in Danish Holstein Cows. Front Genet 2018; 9:141. [PMID: 29755506 PMCID: PMC5932407 DOI: 10.3389/fgene.2018.00141] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 04/04/2018] [Indexed: 11/18/2022] Open
Abstract
Because mastitis is very frequent and unavoidable, adding recovery information into the analysis for genetic evaluation of mastitis is of great interest from economical and animal welfare point of view. Here we have performed genome-wide association studies (GWAS) to identify associated single nucleotide polymorphisms (SNPs) and investigate the genetic background not only for susceptibility to – but also for recoverability from mastitis. Somatic cell count records from 993 Danish Holstein cows genotyped for a total of 39378 autosomal SNP markers were used for the association analysis. Single SNP regression analysis was performed using the statistical software package DMU. Substitution effect of each SNP was tested with a t-test and a genome-wide significance level of P-value < 10-4 was used to declare significant SNP-trait association. A number of significant SNP variants were identified for both traits. Many of the SNP variants associated either with susceptibility to – or recoverability from mastitis were located in or very near to genes that have been reported for their role in the immune system. Genes involved in lymphocyte developments (e.g., MAST3 and STAB2) and genes involved in macrophage recruitment and regulation of inflammations (PDGFD and PTX3) were suggested as possible causal genes for susceptibility to – and recoverability from mastitis, respectively. However, this is the first GWAS study for recoverability from mastitis and our results need to be validated. The findings in the current study are, therefore, a starting point for further investigations in identifying causal genetic variants or chromosomal regions for both susceptibility to – and recoverability from mastitis.
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Affiliation(s)
- B G Welderufael
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden.,Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Peter Løvendahl
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Dirk-Jan de Koning
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Lucas L G Janss
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - W F Fikse
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
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23
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Wen J, Liu H, Wang L, Wang X, Gu N, Liu Z, Xu T, Gomez DR, Komaki R, Liao Z, Wei Q. Potentially Functional Variants of ATG16L2 Predict Radiation Pneumonitis and Outcomes in Patients with Non-Small Cell Lung Cancer after Definitive Radiotherapy. J Thorac Oncol 2018; 13:660-675. [PMID: 29454863 DOI: 10.1016/j.jtho.2018.01.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 12/13/2017] [Accepted: 01/26/2018] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Autophagy not only plays an important role in the progression of cancer but is also involved in tissue inflammatory response. However, few published studies have investigated associations between functional genetic variants of autophagy-related genes and radiation pneumonitis (RP) as well as clinical outcomes in patients with NSCLC after definitive radiotherapy. METHODS We genotyped nine potentially functional single-nucleotide polymorphisms (SNPs) in four autophagy-related genes (autophagy related 2B gene [ATG2B], autophagy related 10 gene [ATG10], autophagy related 12 gene [ATG12], and autophagy related 16 like 2 gene [ATG16L2]) in 393 North American patients with NSCLC treated by definitive radiotherapy and assessed their associations with RP, local recurrence-free survival (LRFS), progression-free survival (PFS), and overall survival (OS) in multivariable Cox proportional hazard regression analyses. RESULTS We found that patients with the ATG16L2 rs10898880 CC variant genotype had a better LRFS, PFS, and OS (adjusted hazard ratio = 0.59, 0.64, and 0.64; 95% confidence interval: 0.45-0.79, 0.48-0.84, and 0.48-0.86; p = 0.0004, 0.002, and 0.003, respectively), but a greater risk for development of severe RP (adjusted hazard ratio = 1.80, 95% confidence interval: 1.04-3.12, p = 0.037) than did patients with AA/AC genotypes. Further functional analyses suggested that the ATG16L2 rs10898880 C variant allele modulated expression of the ATG16L2 gene. CONCLUSION This is the first report that one potentially functional SNP rs10898880 in ATG16L2 may be a predictor of RP, LRFS, PFS, and OS in patients with NSCLC after definitive radiotherapy. Additional larger, prospective studies are needed to confirm these findings.
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Affiliation(s)
- Juyi Wen
- Department of Radiation Oncology, Navy General Hospital, Beijing, People's Republic of China; Department of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Hongliang Liu
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina; Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina
| | - Lili Wang
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina; Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina
| | - Xiaomeng Wang
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina; Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina
| | - Ning Gu
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina; Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina
| | - Zhensheng Liu
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina; Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina
| | - Ting Xu
- Department of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Daniel R Gomez
- Department of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Ritsuko Komaki
- Department of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Zhongxing Liao
- Department of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Qingyi Wei
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina; Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina.
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Autophagy as a potential target for sarcoma treatment. Biochim Biophys Acta Rev Cancer 2017; 1868:40-50. [PMID: 28242349 DOI: 10.1016/j.bbcan.2017.02.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 02/23/2017] [Accepted: 02/23/2017] [Indexed: 02/05/2023]
Abstract
Autophagy is a constitutively active, evolutionary conserved, catabolic process for maintaining homeostasis in cellular stress responses and cell survival. Although its mechanism has not been fully illustrated, recent work on autophagy in various types of sarcomas has demonstrated that autophagy exerts an important role in sarcoma cell growth and proliferation, in pro-survival response to therapies and stresses, and in therapeutic resistance of sarcoma. Thus, the autophagic process is being seen as a possibly novel therapeutic target of sarcoma. Additionally, some co-regulators of autophagy have also been investigated as promising biomarkers for the diagnosis and prognosis of sarcoma. In this review, we summarize contemporary advances in the role of autophagy in sarcoma and discuss the potential of autophagy as a new target for sarcoma treatment.
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Ma T, Wu S, Yan W, Xie R, Zhou C. A functional variant of ATG16L2 is associated with Crohn's disease in the Chinese population. Colorectal Dis 2016; 18:O420-O426. [PMID: 27611316 DOI: 10.1111/codi.13507] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Accepted: 05/29/2016] [Indexed: 12/16/2022]
Abstract
AIM To determine whether genetic polymorphism of the ATG16L2 gene is functionally associated with the incidence of Crohn's disease (CD) in the Chinese population. METHOD The single nucleotide polymorphism (SNP) rs11235604 of the ATG16L2 gene was genotyped in 363 patients with CD and 486 healthy volunteers from the Chinese Han population. The distributions of the genotype and allele frequency were compared between patients and controls by the chi-square test. The mRNA expression of ATG16L2 in T cells was evaluated by real-time PCR. Comparisons of mRNA expression of ATG16L2 between patients and controls and between patients with genotype CC and genotype CT/TT were performed with the Student's t-test. RESULTS Compared with the controls, patients were found to have a significantly higher proportion of genotype TT (5.5% vs 2.5%, P = 0.04). Allele T was the risk allele for the disease (16.3% vs 12.3%, P = 0.02), with an odds ratio of 1.31 (95% CI 1.04-1.67). The ATG16L2 mRNA of the patients was significantly reduced when compared with the controls (0.0044 ± 0.0018 vs 0.0064 ± 0.0023, P < 0.001). Patients with genotype TT/CT had a significant lower level of ATG16L2 mRNA than patients with genotype CC (0.0036 ± 0.0016 vs 0.0053 ± 0.0028, P = 0.005). CONCLUSIONS ATG16L2 is a susceptibility gene for CD in the Chinese population. The rs11235604 SNP is remarkably associated with downregulation of the expression of ATG16L2. Further investigation into the gene's function is warranted for a comprehensive knowledge of the contribution of the variant to the development of CD.
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Affiliation(s)
- T Ma
- Department of Gastroenterology, Huai'an First People's Hospital of Nanjing Medical University, Huai'an, China
| | - S Wu
- Department of Gastroenterology, Huai'an First People's Hospital of Nanjing Medical University, Huai'an, China
| | - W Yan
- Department of Gastroenterology, Huai'an First People's Hospital of Nanjing Medical University, Huai'an, China
| | - R Xie
- Department of Gastroenterology, Huai'an First People's Hospital of Nanjing Medical University, Huai'an, China
| | - C Zhou
- Department of Gastroenterology, Huai'an First People's Hospital of Nanjing Medical University, Huai'an, China.
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Li J, Yang Z, Li Y, Xia J, Li D, Li H, Ren M, Liao Y, Yu S, Chen Y, Yang Y, Zhang Y. Cell apoptosis, autophagy and necroptosis in osteosarcoma treatment. Oncotarget 2016; 7:44763-44778. [PMID: 27007056 PMCID: PMC5190133 DOI: 10.18632/oncotarget.8206] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Accepted: 03/07/2016] [Indexed: 12/23/2022] Open
Abstract
Osteosarcoma is the most common primary bone tumor in children and adolescents. Although combined therapy including surgery and multi-agent chemotherapy have resulted in great improvements in the overall survival of patients, chemoresistance remains an obstacle for the treatment of osteosarcoma. Molecular targets or effective agents that are actively involved in cell death including apoptosis, autophagy and necroptosis have been studied. We summarized how these agents (novel compounds, miRNAs, or proteins) regulate apoptotic, autophagic and necroptotic pathways; and discussed the current knowledge on the role of these new agents in chemotherapy resistance in osteosarcoma.
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Affiliation(s)
- Jing Li
- Bone and Soft Tissue Tumors Research Center of Yunnan Province, Department of Orthopaedics, the Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
- State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing, China
| | - Zuozhang Yang
- Bone and Soft Tissue Tumors Research Center of Yunnan Province, Department of Orthopaedics, the Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
| | - Yi Li
- Department of Oncology, Kunming General Hospital of Chengdu Military Command, Kunming, Yunnan, China
| | - Junfeng Xia
- Bone and Soft Tissue Tumors Research Center of Yunnan Province, Department of Orthopaedics, the Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
| | - Dongqi Li
- Bone and Soft Tissue Tumors Research Center of Yunnan Province, Department of Orthopaedics, the Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
| | - Huiling Li
- Bone and Soft Tissue Tumors Research Center of Yunnan Province, Department of Orthopaedics, the Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
| | - Mingyan Ren
- Bone and Soft Tissue Tumors Research Center of Yunnan Province, Department of Orthopaedics, the Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
| | - Yedan Liao
- Bone and Soft Tissue Tumors Research Center of Yunnan Province, Department of Orthopaedics, the Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
| | - Shunling Yu
- Bone and Soft Tissue Tumors Research Center of Yunnan Province, Department of Orthopaedics, the Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
| | - Yanjin Chen
- Bone and Soft Tissue Tumors Research Center of Yunnan Province, Department of Orthopaedics, the Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
| | - Yihao Yang
- Bone and Soft Tissue Tumors Research Center of Yunnan Province, Department of Orthopaedics, the Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
| | - Ya Zhang
- Bone and Soft Tissue Tumors Research Center of Yunnan Province, Department of Orthopaedics, the Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, Yunnan, China
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Liang P, Le W. Role of autophagy in the pathogenesis of multiple sclerosis. Neurosci Bull 2015; 31:435-44. [PMID: 26254059 DOI: 10.1007/s12264-015-1545-5] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 07/05/2015] [Indexed: 10/23/2022] Open
Abstract
Autophagy plays an important role in maintaining the cellular homeostasis. One of its functions is to degrade unnecessary organelles and proteins for energy recycling or amino-acids for cell survival. Ablation of autophagy leads to neurodegeneration. Multiple sclerosis (MS), a permanent neurological impairment typical of chronic inflammatory demyelinating disorder, is an auto-immune disease of the central nervous system (CNS). Autophagy is tightly linked to the innate and adaptive immune systems during the autoimmune process, and several studies have shown that autophagy directly participates in the progress of MS or experimental autoimmune encephalomyelitis (EAE, a mouse model of MS). Dysfunction of mitochondria that intensively influences the autophagy pathway is one of the important factors in the pathogenesis of MS. Autophagy-related gene (ATG) 5 and immune-related GTPase M (IRGM) 1 are increased, while ATG16L2 is decreased, in T-cells in EAE and active relapsing-remitting MS brains. Administration of rapamycin, an inhibitor of mammalian target of rapamycin ( mTOR), ameliorates relapsing-remitting EAE. Inflammation and oxidative stress are increased in MS lesions and EAE, but Lamp2 and the LC3-II/LC3-I ratio are decreased. Furthermore, autophagy in various glial cells plays important roles in regulating neuro-inflammation in the CNS, implying potential roles in MS. In this review, we discuss the role of autophagy in the peripheral immune system and the CNS in neuroinflammation associated with the pathogenesis of MS.
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Affiliation(s)
- Peizhou Liang
- Institute of Neuroscience, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
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