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Chen M, Cao X, Zheng R, Chen H, He R, Zhou H, Yang Z. The role of HDAC6 in enhancing macrophage autophagy via the autophagolysosomal pathway to alleviate legionella pneumophila-induced pneumonia. Virulence 2024; 15:2327096. [PMID: 38466143 PMCID: PMC10936600 DOI: 10.1080/21505594.2024.2327096] [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: 08/08/2023] [Accepted: 02/28/2024] [Indexed: 03/12/2024] Open
Abstract
Legionella pneumophila (L. pneumophila) is a prevalent pathogenic bacterium responsible for significant global health concerns. Nonetheless, the precise pathogenic mechanisms of L. pneumophila have still remained elusive. Autophagy, a direct cellular response to L. pneumophila infection and other pathogens, involves the recognition and degradation of these invaders in lysosomes. Histone deacetylase 6 (HDAC6), a distinctive member of the histone deacetylase family, plays a multifaceted role in autophagy regulation. This study aimed to investigate the role of HDAC6 in macrophage autophagy via the autophagolysosomal pathway, leading to alleviate L. pneumophila-induced pneumonia. The results revealed a substantial upregulation of HDAC6 expression level in murine lung tissues infected by L. pneumophila. Notably, mice lacking HDAC6 exhibited a protective response against L. pneumophila-induced pulmonary tissue inflammation, which was characterized by the reduced bacterial load and diminished release of pro-inflammatory cytokines. Transcriptomic analysis has shed light on the regulatory role of HDAC6 in L. pneumophila infection in mice, particularly through the autophagy pathway of macrophages. Validation using L. pneumophila-induced macrophages from mice with HDAC6 gene knockout demonstrated a decrease in cellular bacterial load, activation of the autophagolysosomal pathway, and enhancement of cellular autophagic flux. In summary, the findings indicated that HDAC6 knockout could lead to the upregulation of p-ULK1 expression level, promoting the autophagy-lysosomal pathway, increasing autophagic flux, and ultimately strengthening the bactericidal capacity of macrophages. This contributes to the alleviation of L. pneumophila-induced pneumonia.
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Affiliation(s)
- Minjia Chen
- Department of Pathogenic Biology and Medical Immunology, School of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Xiuqin Cao
- Key Laboratory of Fertility Preservation and Maintenance, Ministry of Education, School of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Ronghui Zheng
- Department of Pathogenic Biology and Medical Immunology, School of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Haixia Chen
- Department of Pathogenic Biology and Medical Immunology, School of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Ruixia He
- Department of Pathogenic Biology and Medical Immunology, School of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Hao Zhou
- Department of Pathogenic Biology and Medical Immunology, School of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Zhiwei Yang
- Department of Pathogenic Biology and Medical Immunology, School of Basic Medicine, Ningxia Medical University, Yinchuan, China
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2
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Pan W, Zhang J, Zhang L, Zhang Y, Song Y, Han L, Tan M, Yin Y, Yang T, Jiang T, Li H. Comprehensive view of macrophage autophagy and its application in cardiovascular diseases. Cell Prolif 2024; 57:e13525. [PMID: 37434325 PMCID: PMC10771119 DOI: 10.1111/cpr.13525] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 06/17/2023] [Accepted: 06/22/2023] [Indexed: 07/13/2023] Open
Abstract
Cardiovascular diseases (CVDs) are the primary drivers of the growing public health epidemic and the leading cause of premature mortality and economic burden worldwide. With decades of research, CVDs have been proven to be associated with the dysregulation of the inflammatory response, with macrophages playing imperative roles in influencing the prognosis of CVDs. Autophagy is a conserved pathway that maintains cellular functions. Emerging evidence has revealed an intrinsic connection between autophagy and macrophage functions. This review focuses on the role and underlying mechanisms of autophagy-mediated regulation of macrophage plasticity in polarization, inflammasome activation, cytokine secretion, metabolism, phagocytosis, and the number of macrophages. In addition, autophagy has been shown to connect macrophages and heart cells. It is attributed to specific substrate degradation or signalling pathway activation by autophagy-related proteins. Referring to the latest reports, applications targeting macrophage autophagy have been discussed in CVDs, such as atherosclerosis, myocardial infarction, heart failure, and myocarditis. This review describes a novel approach for future CVD therapies.
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Affiliation(s)
- Wanqian Pan
- Department of CardiologyThe First Affiliated Hospital of Soochow UniversitySuzhouChina
| | - Jun Zhang
- Department of CardiologyThe First Affiliated Hospital of Soochow UniversitySuzhouChina
| | - Lei Zhang
- Department of CardiologyThe First Affiliated Hospital of Soochow UniversitySuzhouChina
| | - Yue Zhang
- Department of CardiologyThe First Affiliated Hospital of Soochow UniversitySuzhouChina
| | - Yiyi Song
- Suzhou Medical College of Soochow UniversitySuzhouChina
| | - Lianhua Han
- Department of CardiologyThe First Affiliated Hospital of Soochow UniversitySuzhouChina
| | - Mingyue Tan
- Department of CardiologyThe First Affiliated Hospital of Soochow UniversitySuzhouChina
| | - Yunfei Yin
- Department of CardiologyThe First Affiliated Hospital of Soochow UniversitySuzhouChina
| | - Tianke Yang
- Department of Ophthalmology, Eye Institute, Eye & ENT HospitalFudan UniversityShanghaiChina
- Department of OphthalmologyThe First Affiliated Hospital of USTC, University of Science and Technology of ChinaHefeiChina
| | - Tingbo Jiang
- Department of CardiologyThe First Affiliated Hospital of Soochow UniversitySuzhouChina
| | - Hongxia Li
- Department of CardiologyThe First Affiliated Hospital of Soochow UniversitySuzhouChina
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3
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Dong L, Shen Z, Zhang H, Zhang B, Zhou Y, Lv X, Hong X, Liu J, Yang W. Effect of unsoluble corrosion products of WE43 alloys in vitro on macrophages. J Biomed Mater Res A 2024; 112:6-19. [PMID: 37681297 DOI: 10.1002/jbm.a.37601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 08/06/2023] [Accepted: 08/16/2023] [Indexed: 09/09/2023]
Abstract
Magnesium alloys have been used to manufacture biodegradable implants, bone graft substitutes, and cardiovascular stents. WE43 was the most widely used magnesium alloy. The degradation process begins when the magnesium alloy stent is implanted in the body and comes into contact with body fluid. The degradation products include hydrogen, Mg2+ , local alkaline environment, and unsoluble products. A large number of studies focused on Mg2+ and pH in vitro, and in vivo of magnesium alloys, but few studies on unsoluble corrosion products (UCPs). In this study, UCPs of WE43 alloy were prepared by immersion in vitro, and their effects on macrophages were investigated. The results showed that the unsoluble corrosion products were Mg24Y5, Mg12YNd, and MgCO3 ·3H2 O, which were dose-dependent on the apoptosis and necrosis of macrophages. After phagocytosis of UCPs, macrophages mainly metabolize in lysosome, and autophagy also participates in the metabolism of UCPs. It also decreases mitochondrial membrane potential and increases lysosomes, endoplasmic reticulum stress, and P2X7 receptor activation. These will increase reactive oxygen species (ROS) in cells, activating NLRP3 inflammatory corpuscles, activating the downstream pro-IL18 and pro-IL1β, and converting it to IL-18, and IL-1β. However, its pro-inflammatory effect is far lower than that of the classical Lipopolysaccharide (LPS) pro-inflammatory pathway. This work has increased our understanding of magnesium alloy metabolism and provides new ideas for the clinical application of magnesium alloys.
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Affiliation(s)
- Li Dong
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zhiyuan Shen
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Huidi Zhang
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Binmei Zhang
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yinze Zhou
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xin Lv
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xiaojian Hong
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jiaren Liu
- Department of Clinical Lab, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wei Yang
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
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4
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Sharma AK, Ismail N. Role of Autophagy in Ehrlichia-Induced Liver Injury. Cells 2023; 12:cells12091334. [PMID: 37174734 PMCID: PMC10177069 DOI: 10.3390/cells12091334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 05/05/2023] [Indexed: 05/15/2023] Open
Abstract
Autophagy is a cellular process that involves the cell breakdown and recycling of cellular components, such as old, damaged, or abnormal proteins, for important cellular functions including development, immune function, stress, and starvation [...].
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Affiliation(s)
- Aditya Kumar Sharma
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Nahed Ismail
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
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5
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Weel I, Ribeiro V, Romão-Veiga M, Fioratti E, Peraçoli J, Peraçoli M. Down-regulation of autophagy proteins is associated with higher mTOR expression in the placenta of pregnant women with preeclampsia. Braz J Med Biol Res 2023; 55:e12283. [PMID: 36629523 PMCID: PMC9828864 DOI: 10.1590/1414-431x2022e12283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 11/09/2022] [Indexed: 01/11/2023] Open
Abstract
Autophagy is a lysosomal degradation pathway that removes protein aggregates and damaged organelles maintaining cellular integrity. It seems to be essential for cell survival during stress, starvation, hypoxia, and consequently to the placenta implantation and development. Preeclampsia (PE) is a multisystemic disorder characterized by the onset of hypertension associated or not with proteinuria and other maternal complications. Considering that the placenta seems to play an important role in the pathogenesis of PE, the objective of the present study was to evaluate protein levels of light chain protein (LC3), beclin-1, and the mammalian target of rapamycin (mTOR) in the placenta of pregnant women with PE. Placental tissues collected from 20 women with PE and 20 normotensive (NT) pregnant women were evaluated for LC3, beclin-1, and mTOR expression by qPCR and immunohistochemistry. The mRNA for LC3 and beclin-1 were significantly lower, while mTOR gene expression was significantly higher in the placenta of pregnant women with PE than in the NT group. Placentas of PE women showed significantly decreased protein expression of LC3-II and beclin-1, whereas mTOR was significantly increased compared with the NT pregnant women. There was a negative correlation between protein expression of mTOR and LC3-II in the placental tissue of PE women. In conclusion, the results showed autophagy deficiency suggesting that failure in this degradation process may contribute to the pathogenesis of PE; however, new studies involving cross-talk between autophagy and inflammatory molecular mechanisms might help to better understand the autophagy process in this obstetric pathology.
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Affiliation(s)
- I.C. Weel
- Departamento de Ciências Químicas e Biológicas, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - V.R. Ribeiro
- Departamento de Ciências Químicas e Biológicas, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - M. Romão-Veiga
- Departamento de Ciências Químicas e Biológicas, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - E.G. Fioratti
- Departamento de Ciências Químicas e Biológicas, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - J.C. Peraçoli
- Departamento de Ginecologia e Obstetrícia, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - M.T.S. Peraçoli
- Departamento de Ciências Químicas e Biológicas, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brasil,Departamento de Ginecologia e Obstetrícia, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
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6
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Modulation of MAPK- and PI3/AKT-Dependent Autophagy Signaling by Stavudine (D4T) in PBMC of Alzheimer’s Disease Patients. Cells 2022; 11:cells11142180. [PMID: 35883623 PMCID: PMC9322713 DOI: 10.3390/cells11142180] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/07/2022] [Accepted: 07/07/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Aβ42 deposition plays a pivotal role in AD pathogenesis by inducing the activation of microglial cells and neuroinflammation. This process is antagonized by microglia-mediated clearance of Aβ plaques. Activation of the NLRP3 inflammasome is involved in neuroinflammation and in the impairments of Aβ-plaque clearance. On the other hand, stavudine (D4T) downregulates the NLRP3 inflammasome and stimulates autophagy-mediated Aβ-clearing in a THP-1-derived macrophages. Methods: We explored the effect of D4T on Aβ autophagy in PBMC from AD patients that were primed with LPS and stimulated with Aβ oligomers in the absence/presence of D4T. We analyzed the NLRP3 activity by measuring NLRP3-ASC complex formation by AMNIS FlowSight and pro-inflammatory cytokine (IL-1β, IL-18 and Caspase-1) production by ELISA. The phosphorylation status of p38, ERK, AKT, p70, and the protein expression of CREB, LAMP2A, beclin-1, Caspase-3 and Bcl2 were analyzed by Western blot. Results: Data showed that D4T: (1) downregulates NLRP3 inflammasome activation and the production of down-stream pro-inflammatory cytokines in PBMC; (2) stimulates the phosphorylation of AKT, ERK and p70 as well as LAMP2A, beclin-1 and Bcl2 expression and reduces Caspase-3 expression, suggesting an effect of this compound on autophagy; (3) increases phospho-CREB, which is a downstream target of p-ERK and p-AKT, inducing anti-inflammatory cytokine production and resulting in a possible decrease of Aβ-mediated cytotoxicity; and (4) reduces the phosphorylation of p38, a protein involved in the production of pro-inflammatory cytokines and tau hyperphosphorylation. Conclusions: D4T reduces the activation of the NLRP3 inflammasome, and it might stimulate autophagy as well as the molecular mechanism that modulates Aβ cytotoxicity, and D4T might reduce inflammation in the cells of AD patients. It could be very interesting to check the possible beneficial effects of D4T in the clinical scenario.
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7
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Wiesinger AM, Bigger B, Giugliani R, Scarpa M, Moser T, Lampe C, Kampmann C, Lagler FB. The Inflammation in the Cytopathology of Patients With Mucopolysaccharidoses- Immunomodulatory Drugs as an Approach to Therapy. Front Pharmacol 2022; 13:863667. [PMID: 35645812 PMCID: PMC9136158 DOI: 10.3389/fphar.2022.863667] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/27/2022] [Indexed: 01/31/2023] Open
Abstract
Mucopolysaccharidoses (MPS) are a group of lysosomal storage diseases (LSDs), characterized by the accumulation of glycosaminoglycans (GAGs). GAG storage-induced inflammatory processes are a driver of cytopathology in MPS and pharmacological immunomodulation can bring improvements in brain, cartilage and bone pathology in rodent models. This manuscript reviews current knowledge with regard to inflammation in MPS patients and provides hypotheses for the therapeutic use of immunomodulators in MPS. Thus, we aim to set the foundation for a rational repurposing of the discussed molecules to minimize the clinical unmet needs still remaining despite enzyme replacement therapy (ERT) and hematopoietic stem cell transplantation (HSCT).
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Affiliation(s)
- Anna-Maria Wiesinger
- Institute of Congenital Metabolic Diseases, Paracelsus Medical University, Salzburg, Austria
- European Reference Network for Hereditary Metabolic Diseases, MetabERN, Udine, Italy
- *Correspondence: Anna-Maria Wiesinger,
| | - Brian Bigger
- European Reference Network for Hereditary Metabolic Diseases, MetabERN, Udine, Italy
- Stem Cell and Neurotherapies, Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Roberto Giugliani
- Department of Genetics, Medical Genetics Service and Biodiscovery Laboratory, HCPA, UFRGS, Porto Alegre, Brazil
| | - Maurizio Scarpa
- European Reference Network for Hereditary Metabolic Diseases, MetabERN, Udine, Italy
- Regional Coordinating Center for Rare Diseases, University Hospital Udine, Udine, Italy
| | - Tobias Moser
- Department of Neurology, Christian Doppler University Hospital, Paracelsus Medical University, Salzburg, Austria
| | - Christina Lampe
- European Reference Network for Hereditary Metabolic Diseases, MetabERN, Udine, Italy
- Department of Child and Adolescent Medicine, Center of Rare Diseases, University Hospitals Giessen/Marburg, Giessen, Germany
| | - Christoph Kampmann
- Department of Pediatric Cardiology, University Hospital Mainz, Mainz, Germany
| | - Florian B. Lagler
- Institute of Congenital Metabolic Diseases, Paracelsus Medical University, Salzburg, Austria
- European Reference Network for Hereditary Metabolic Diseases, MetabERN, Udine, Italy
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8
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Han NR, Moon PD, Nam SY, Ko SG, Park HJ, Kim HM, Jeong HJ. TSLP up-regulates inflammatory responses through induction of autophagy in T cells. FASEB J 2022; 36:e22148. [PMID: 34997949 DOI: 10.1096/fj.202101447r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 12/14/2021] [Accepted: 12/21/2021] [Indexed: 12/19/2022]
Abstract
Thymic stromal lymphopoietin (TSLP), a type I cytokine belonging to the IL-2 cytokine family, promotes Th2-mediated inflammatory responses. The aim of this study is to investigate whether TSLP increases inflammatory responses via induction of autophagy using a murine T cell lymphoma cell line, EL4 cells, and lipopolysaccharide (LPS)-injected mice. TSLP increased expression levels of autophagy-related factors, such as Beclin-1, LC3-II, p62, Atg5, and lysosome associated membrane protein 1/2, whereas these factors increased by TSLP disappeared by neutralization of TSLP in EL4 cells. TSLP activated JAK1/JAK2/STAT5/JNK/PI3K, while the blockade of JAK1/JAK2/STAT5/JNK/PI3K signaling pathways reduced the expression levels of Beclin-1, LC3-II, and p62 in TSLP-stimulated EL4 cells. In addition, TSLP simultaneously increased levels of inflammatory cytokines via induction of autophagy by activation of JAK1/JAK2/STAT5/JNK/PI3K signaling pathways. In an LPS-induced acute liver injury (ALI) mouse model, exogenous TSLP increased expression levels of Beclin-1 and LC3-II, whereas functional deficiency of TSLP by TSLP siRNA resulted in lower expression of Beclin-1, LC3-II, and inflammatory cytokines, impairing their ability to form autophagosomes in ALI mice. Thus, our findings show a new role of TSLP between autophagy and inflammatory responses. In conclusion, regulating TSLP-induced autophagy may be a potential therapeutic strategy for inflammatory responses.
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Affiliation(s)
- Na-Ra Han
- College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea.,Korean Medicine-Based Drug Repositioning Cancer Research Center, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Phil-Dong Moon
- Center for Converging Humanities, Kyung Hee University, Seoul, Republic of Korea
| | - Sun-Young Nam
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Seong-Gyu Ko
- Korean Medicine-Based Drug Repositioning Cancer Research Center, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea.,Department of Preventive Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hi-Joon Park
- Department of Anatomy & Information Sciences, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hyung-Min Kim
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hyun-Ja Jeong
- Department of Food Science & Technology, Hoseo University, Asan, Republic of Korea
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9
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Goncharova IA, Bragina EY, Zhalsanova IZ, Freidin MB, Nazarenko MS. Putative regulatory functions of SNPs associated with bronchial asthma, arterial hypertension and their comorbid phenotype. Vavilovskii Zhurnal Genet Selektsii 2022; 25:855-863. [PMID: 35088020 PMCID: PMC8761574 DOI: 10.18699/vj21.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/07/2021] [Accepted: 07/07/2021] [Indexed: 11/19/2022] Open
Abstract
Linkage disequilibrium (LD) of single nucleotide polymorphisms (SNPs) of TLR4/AL160272.2 (rs1927914, rs1928298, rs7038716, rs7026297, rs7025144) was estimated in the Slavs of West Siberia. We further investigated an association of SNPs in TLR4/AL160272.2 (rs1927914, rs7038716, rs7025144), SERPINA1 (rs1980616), ATXN2/BRAP (rs11065987), IL2RB (rs2284033), NT5C2 (rs11191582), CARD8 (rs11669386), ANG/RNASE4 (rs1010461), and ABTB2/ САТ (rs2022318) genes with bronchial asthma (BA), arterial hypertension (AH) and their comorbidity. Then, the disease-associated SNPs were annotated in silico in relation to their potential regulatory functions. Strong LD was detected between rs1928298 and rs1927914, as well as rs7026297 and rs7038716 in the Slavs of West Siberia. It was found that the rs1927914 G allele of the TLR4 gene and the rs1980616 C allele of the SERPINA1 gene are associated with the predisposition to BA. These SNPs can affect binding affinity of transcription factors of the Pou and Klf4 families, as well as the expression levels of the TLR4 and SERPINA1 genes. The rs11065987 allele A of the ATXN2/BRAP genes, the rs11669386 A allele of the CARD8 gene, the rs2284033 allele G of the IL2RB gene, and the rs11191582 allele G of the NT5C2 gene were associated with the risk of AH. These variants can alter binding affinity of the Hoxa9, Irf, RORalpha1 and HMG-IY transcription factors, as well as the expression levels of the ALDH2, CARD8, NT5C2, ARL3, and SFXN2 genes in blood cells/vessels/heart, respectively. The risk of developing a comorbid phenotype of AD and AH is associated with the A allele of rs7038716 and the T allele of rs7025144 of the TLR4/AL160272.2 genes, the A allele of rs1010461 of the ANG gene and the C allele of rs2022318 of the ABTB2/CAT genes. Variants rs7038716 and rs7025144 can change the expression levels of the TLR4 gene in blood cells, while rs1010461 and rs2022318 influence the expression levels of the ANG and RNASE4 genes as well as the CAT and ABTB2 genes in blood cells, lungs/vessels/heart.
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Affiliation(s)
- I. A. Goncharova
- Research Institute of Medical Genetics, Tomsk National Research Medical Center of the Russian Academy of Sciences
| | - E. Yu. Bragina
- Research Institute of Medical Genetics, Tomsk National Research Medical Center of the Russian Academy of Sciences
| | - I. Zh. Zhalsanova
- Research Institute of Medical Genetics, Tomsk National Research Medical Center of the Russian Academy of Sciences
| | - M. B. Freidin
- Research Institute of Medical Genetics, Tomsk National Research Medical Center of the Russian Academy of Sciences
| | - M. S. Nazarenko
- Research Institute of Medical Genetics, Tomsk National Research Medical Center of the Russian Academy of Sciences
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10
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Ma L, Li W, Zhang Y, Qi L, Zhao Q, Li N, Lu Y, Zhang L, Zhou F, Wu Y, He Y, Yu H, He Y, Wei B, Wang H. FLT4/VEGFR3 activates AMPK to coordinate glycometabolic reprogramming with autophagy and inflammasome activation for bacterial elimination. Autophagy 2021; 18:1385-1400. [PMID: 34632918 DOI: 10.1080/15548627.2021.1985338] [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: 10/20/2022] Open
Abstract
Macrophages rapidly undergo glycolytic reprogramming in response to macroautophagy/autophagy, inflammasome activation and pyroptosis for the clearance of bacteria. Identification the key molecules involved in these three events will provide critical potential therapeutic applications. Upon S. typhimurium infection, FLT4/VEGFR3 and its ligand VEGFC were inducibly expressed in macrophages, and FLT4 signaling inhibited CASP1 (caspase 1)-dependent inflammasome activation and pyroptosis but enhanced MAP1LC3/LC3 activation for elimination of the bacteria. Consistently, FLT4 mutants lacking the extracellular ligand-binding domain increased production of the proinflammatory metabolites such as succinate and lactate, and reduced antimicrobial metabolites including citrate and NAD(P)H in macrophages and liver upon infection. Mechanistically, FLT4 recruited AMP-activated protein kinase (AMPK) and phosphorylated Y247 and Y441/442 in the PRKAA/alpha subunit for AMPK activation. The AMPK agonist AICAR could rescue glycolytic reprogramming and inflammasome activation in macrophages expressing the mutant FLT4, which has potential translational application in patients carrying Flt4 mutations to prevent recurrent infections. Collectively, we have elucidated that the FLT4-AMPK module in macrophages coordinates glycolytic reprogramming, autophagy, inflammasome activation and pyroptosis to eliminate invading bacteria.
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Affiliation(s)
- Li Ma
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Weiyun Li
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.,School of Life Sciences, Xiamen University, Xiamen, Fujian Province, China
| | - Yanbo Zhang
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.,Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Linlin Qi
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Qi Zhao
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Na Li
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Yao Lu
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Luqing Zhang
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Cam-Su Genomic Resources Center, Soochow University, Suzhou, China
| | - Fei Zhou
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Cam-Su Genomic Resources Center, Soochow University, Suzhou, China
| | - Yichun Wu
- State Key Laboratory of Molecular Biology, National Center for Protein Science Shanghai, Shanghai Science Research Center, Shanghai Key Laboratory of Molecular Andrology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Yongning He
- State Key Laboratory of Molecular Biology, National Center for Protein Science Shanghai, Shanghai Science Research Center, Shanghai Key Laboratory of Molecular Andrology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Hongxiu Yu
- Institutes of Biomedical Science, Fudan University, Shanghai, China
| | - Yulong He
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Cam-Su Genomic Resources Center, Soochow University, Suzhou, China
| | - Bin Wei
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China.,School of Life Sciences, Shanghai University, Shanghai, China.,School of Medicine, Cancer Center, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Hongyan Wang
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.,School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China.,Bio-Research Innovation Center Suzhou, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Suzhou, Jiangsu, China
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11
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Wang W, Qin Y, Song H, Wang L, Jia M, Zhao C, Gong M, Zhao W. Galectin-9 Targets NLRP3 for Autophagic Degradation to Limit Inflammation. THE JOURNAL OF IMMUNOLOGY 2021; 206:2692-2699. [PMID: 33963043 DOI: 10.4049/jimmunol.2001404] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/24/2021] [Indexed: 11/19/2022]
Abstract
NOD-, LRR-, and pyrin domain-containing protein 3 (NLRP3) inflammasome has been implicated in a variety of inflammatory disorders, and its activation should be tightly controlled to avoid detrimental effects. NLRP3 protein expression is considered as the rate-limiting step for NLRP3 inflammasome activation. In this study, we show that galectin-9 (encoded by lgals9) attenuated NLRP3 inflammasome activation by promoting the protein degradation of NLRP3 in primary peritoneal macrophages of C57BL/6J mice. Lgals9 deficiency enhances NLRP3 inflammasome activation and promotes NLRP3-dependent inflammation in C57BL/6J mice in vivo. Mechanistically, galectin-9 interacts with NLRP3, promotes the formation of NLRP3/p62 (an autophagic cargo receptor, also known as SQSTM1) complex, and thus facilitates p62-dependent autophagic degradation of NLRP3 in primary peritoneal macrophages of C57BL/6J mice and HEK293T cells. Therefore, we identify galectin-9 as an "eat-me" signal for selective autophagy of NLRP3 and uncover the potential roles of galectins in controlling host protein degradation. Furthermore, our work suggests galectin-9 as a priming therapeutic target for the diseases caused by improper NLRP3 inflammasome activation.
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Affiliation(s)
- Wenwen Wang
- Department of Immunology, Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.,State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong, China
| | - Ying Qin
- Department of Immunology, Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.,State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong, China
| | - Hui Song
- Department of Immunology, Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.,State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong, China
| | - Lijuan Wang
- Pathology Tissue Bank, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Mutian Jia
- Department of Immunology, Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.,State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong, China
| | - Chunyuan Zhao
- Department of Immunology, Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.,State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong, China.,Department of Cell Biology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China; and
| | - Mouchun Gong
- Hangzhou Medical College Affiliated Lin'an People's Hospital, Hangzhou, Zhejiang, China
| | - Wei Zhao
- Department of Immunology, Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China; .,State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong, China
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12
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Autophagy in the HTR-8/SVneo Cell Oxidative Stress Model Is Associated with the NLRP1 Inflammasome. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:2353504. [PMID: 33854691 PMCID: PMC8019638 DOI: 10.1155/2021/2353504] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 03/01/2021] [Accepted: 03/11/2021] [Indexed: 11/17/2022]
Abstract
We investigated whether there was activation of NLRP1 inflammasomes and excessive autophagy in oxidative stress damage. And we further demonstrate whether there is a cascade relationship between the activation of NLRP1 inflammasomes and the phenomenon of excessive autophagy. To observe the expression level of the NLRP1 inflammasome group in the pathological process of trophoblast cell oxidative stress, western blot, immunofluorescence, and qRT-PCR were performed. Autophagy in trophoblast cells after the action of H2O2 was detected by using normal trophoblast cells' NLRP1-specific activator (MDP) as a positive control. The presence of excessive autophagy was determined by comparing it with the autophagy-related proteins in normal trophoblast cells. Through siRNA-NLRP1, we investigated the role of oxidative stress and the NLRP1 inflammasome in autophagy in cells. 100 μmol MDP for 24 hours can be used as the optimal concentration of the NLRP1 activator. In human placental trophoblast oxidative stress, the model group significantly increased the expression level of inflammasome IL-1β, CASP1, and NLRP1, compared with the control group NLRP3, and LC3-II, Beclin-1, ATG5, ATG7, and p62 overactivated the autophagy ability of cells. After the activation of NLRP1, the expression of these inflammasomes increased, accompanied by the decrease in autophagy. After the expression of NLRP1 was silenced by RNAi, the expression of inflammasome IL-1β, CASP1, and NLRP3 was also decreased. Still, the autophagy level was increased, which was manifested by the high expression of LC3-II, Beclin-1, ATG5, and ATG7 and the decrease in p62. Trophoblast cells showed the expression of NLRP1 protein and excessive autophagy under oxidative stress. Simultaneously, the NLRP1 inflammasome of trophoblast cells in the state of oxidative stress was correlated with autophagy. Inflammasome activation and autophagy were shown to be linked and to influence each other mutually. These may also provide new therapeutic targets in a pathological pregnancy.
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13
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Khalil H, Abd ElHady A, Elawdan KA, Mohamed D, Mohamed DD, Abd El Maksoud AI, El-Chennawi FA, El-Fikiy B, El-Sayed IH. The Mechanical Autophagy as a Part of Cellular Immunity; Facts and Features in Treating the Medical Disorders. Immunol Invest 2020; 51:266-289. [PMID: 32993405 DOI: 10.1080/08820139.2020.1828453] [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] [Indexed: 12/12/2022]
Abstract
Autophagy is a cellular housekeeping process that incorporates lysosomal-degradation to maintain cell survival and energy sources. In recent decades, the role of autophagy has implicated in the initiation and development of many diseases that affect humanity. Among these diseases are autoimmune diseases and neurodegenerative diseases, which connected with the lacking autophagy. Other diseases are connected with the increasing levels of autophagy such as cancers and infectious diseases. Therefore, controlling autophagy with sufficient regulators could represent an effective strategy to overcome such diseases. Interestingly, targeting autophagy can also provide a sufficient method to combat the current epidemic caused by the ongoing coronavirus. In this review, we aim to highlight the physiological function of the autophagic process to understand the circumstances surrounding its role in the cellular immunity associated with the development of human diseases.
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Affiliation(s)
- Hany Khalil
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Amira Abd ElHady
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Khaled A Elawdan
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Dalia Mohamed
- Industrial Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Doaa D Mohamed
- Industrial Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Ahmed I Abd El Maksoud
- Industrial Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Farha A El-Chennawi
- Clinical Pathology Department, Faculty of Medicine, Mansora University, Mansora, Egypt
| | - Bhgat El-Fikiy
- Department of Animal Biotechnology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Ibrahim H El-Sayed
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh, Egypt
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14
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Lactobacillus johnsonii L531 Ameliorates Escherichia coli-Induced Cell Damage via Inhibiting NLRP3 Inflammasome Activity and Promoting ATG5/ATG16L1-Mediated Autophagy in Porcine Mammary Epithelial Cells. Vet Sci 2020; 7:vetsci7030112. [PMID: 32823867 PMCID: PMC7558184 DOI: 10.3390/vetsci7030112] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/06/2020] [Accepted: 08/12/2020] [Indexed: 12/31/2022] Open
Abstract
Escherichia coli (E. coli), a main mastitis-causing pathogen in sows, leads to mammary tissue damage. Here, we explored the effects of Lactobacillus johnsonii L531 on attenuating E. coli-induced inflammatory damage in porcine mammary epithelial cells (PMECs). L. johnsonii L531 pretreatment reduced E. coli adhesion to PMECs by competitive exclusion and the production of inhibitory factors and decreased E. coli-induced destruction of cellular morphology and ultrastructure. E. coli induced activation of NLRP3 inflammasome associated with increased expression of NLRP3, ASC, and cleaved caspase-1, however, L. johnsonii L531 inhibited E. coli-induced activation of NLRP3 inflammasome. Up-regulation of interleukin (Il)-1β, Il-6, Il-8, Il-18, tumor necrosis factor alpha, and chemokine Cxcl2 expression after E. coli infection was attenuated by L. johnsonii L531. E. coli infection inhibited autophagy, whereas L. johnsonii L531 reversed the inhibitory effect of E. coli on autophagy by decreasing the expression of autophagic receptor SQSTM1/p62 and increasing the expression of autophagy-related proteins ATG5, ATG16L1, and light chain 3 protein by Western blotting analysis. Our findings suggest that L. johnsonii L531 pretreatment restricts NLRP3 inflammasome activity and induces autophagy through promoting ATG5/ATG16L1-mediated autophagy, thereby protecting against E. coli-induced inflammation and cell damage in PMECs.
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15
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Elimam H, El-Say KM, Cybulsky AV, Khalil H. Regulation of Autophagy Progress via Lysosomal Depletion by Fluvastatin Nanoparticle Treatment in Breast Cancer Cells. ACS OMEGA 2020; 5:15476-15486. [PMID: 32637822 PMCID: PMC7331036 DOI: 10.1021/acsomega.0c01618] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 06/05/2020] [Indexed: 05/03/2023]
Abstract
Fluvastatin (FLV) is a statin family member that may play a role in modulating a variety of medical disorders such as atherosclerosis and breast cancer. The present study addresses the ability of FLV to modulate the cellular immune response and provides a new nanosized FLV formula (self-nanoemulsifying delivery system, SNED) potentially more effective for suppression of breast cancer development. We monitored autophagic machinery through the expression of microtubule-associated protein 1A/1B-light chain 3 (LC3I/II). Lysosomal activity upon treatment was evaluated by mRNA and protein expression of lysosomal-associated membrane protein 1 (LAMP-1). Mitogen-activated protein kinase (MAPK) signaling and its association with proinflammatory cytokine secretion were assessed in treated cells. Autophagosome formation was significantly increased in cells that were pretreated with FLV-SNED in comparison to FLV-treated cells. Activation of autophagy was accompanied with arrest of LAMP-1 expression, which correlates with lysosomal activity. Simultaneously, both FLV and FLV-SNED activated MAPK signaling and modified interleukin-6 and tumor necrosis factor-α levels in treated cells. These findings indicate that FLV reduces cell viability via depletion of lysosomal activities along with accumulation of autophagosomes leading to disturbance of autophagosome-lysosomal fusion in treated cells. Furthermore, our data reveal the effectiveness of both FLV agents in the modulation of proinflammatory cytokine secretion from treated cells via regulation of MAPK signaling cascades and indicate that FLV-SNED is more efficient than FLV. This study provides new insights into how FLV regulates breast cancer cell viability via modulation of AMPK-mTOR and ERK-mTOR signaling, and through autophagosome formation accompanied by lysosomal degradation.
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Affiliation(s)
- Hanan Elimam
- Department
of Medicine, McGill University Health Centre
Research Institute, McGill University, Montreal, Quebec H4A 3J1, Canada
- Department
of Biochemistry, Faculty of Pharmacy, University
of Sadat City, Sadat
City 32958, Egypt
- . Tel: +20-11-4171-1945
| | - Khalid M. El-Say
- Department
of Pharmaceutics, Faculty of Pharmacy, King
Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department
of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Cairo 11651, Egypt
| | - Andrey V. Cybulsky
- Department
of Medicine, McGill University Health Centre
Research Institute, McGill University, Montreal, Quebec H4A 3J1, Canada
| | - Hany Khalil
- Department
of Molecular Biology, Genetic Engineering and Biotechnology Research
Institute, University of Sadat City, Sadat City 32958, Egypt
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16
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Sánchez-Díaz M, Nicolás-Ávila JÁ, Cordero MD, Hidalgo A. Mitochondrial Adaptations in the Growing Heart. Trends Endocrinol Metab 2020; 31:308-319. [PMID: 32035734 DOI: 10.1016/j.tem.2020.01.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/22/2019] [Accepted: 01/09/2020] [Indexed: 12/14/2022]
Abstract
The heart pumps blood throughout the whole life of an organism, without rest periods during which to replenish energy or detoxify. Hence, cardiomyocytes, the working units of the heart, have mechanisms to ensure constitutive production of energy and detoxification to preserve fitness and function for decades. Even more challenging, the heart must adapt to the varying conditions of the organism from fetal life to adulthood, old age, and pathological stress. Mitochondria are at the nexus of these processes by producing not only energy but also metabolites and oxidative byproducts that can activate alarm signals and be toxic to the cell. We review basic concepts about cardiac mitochondria with a focus on their remarkable adaptations, including elimination, throughout the mammalian lifetime.
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Affiliation(s)
- María Sánchez-Díaz
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid 28029, Spain
| | | | - Mario D Cordero
- Cátedra de Reproducción y Genética Humana del Instituto para el Estudio de la Biología de la Reproducción Humana (INEBIR), 41009 Sevilla, Spain; Universidad Europea del Atlántico (UNEATLANTICO), and Fundación Universitaria Iberoamericana (FUNIBER), 39011 Santander, Spain.
| | - Andrés Hidalgo
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid 28029, Spain; Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximillians-Universität, Munich, Germany.
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17
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Wrigley R, Phipps-Green AJ, Topless RK, Major TJ, Cadzow M, Riches P, Tausche AK, Janssen M, Joosten LAB, Jansen TL, So A, Harré Hindmarsh J, Stamp LK, Dalbeth N, Merriman TR. Pleiotropic effect of the ABCG2 gene in gout: involvement in serum urate levels and progression from hyperuricemia to gout. Arthritis Res Ther 2020; 22:45. [PMID: 32164793 PMCID: PMC7069001 DOI: 10.1186/s13075-020-2136-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 02/20/2020] [Indexed: 12/13/2022] Open
Abstract
Background The ABCG2 Q141K (rs2231142) and rs10011796 variants associate with hyperuricaemia (HU). The effect size of ABCG2 rs2231142 on urate is ~ 60% that of SLC2A9, yet the effect size on gout is greater. We tested the hypothesis that ABCG2 plays a role in the progression from HU to gout by testing for association of ABCG2 rs2231142 and rs10011796 with gout using HU controls. Methods We analysed 1699 European gout cases and 14,350 normouricemic (NU) and HU controls, and 912 New Zealand (NZ) Polynesian (divided into Eastern and Western Polynesian) gout cases and 696 controls. Association testing was performed using logistic and linear regression with multivariate adjusting for confounding variables. Results In Europeans and Polynesians, the ABCG2 141K (T) allele was associated with gout using HU controls (OR = 1.85, P = 3.8E− 21 and ORmeta = 1.85, P = 1.3E− 03, respectively). There was evidence for an effect of 141K in determining HU in European (OR = 1.56, P = 1.7E− 18) but not in Polynesian (ORmeta = 1.49, P = 0.057). For SLC2A9 rs11942223, the T allele associated with gout in the presence of HU in European (OR = 1.37, P = 4.7E− 06), however significantly weaker than ABCG2 rs2231142 141K (PHet = 0.0023). In Western Polynesian and European, there was epistatic interaction between ABCG2 rs2231142 and rs10011796. Combining the presence of the 141K allele with the rs10011796 CC-genotype increased gout risk, in the presence of HU, 21.5-fold in Western Polynesian (P = 0.009) and 2.6-fold in European (P = 9.9E− 06). The 141K allele of ABCG2 associated with increased gout flare frequency in Polynesian (Pmeta = 2.5E− 03). Conclusion These data are consistent with a role for ABCG2 141K in gout in the presence of established HU.
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Affiliation(s)
- Rebekah Wrigley
- Department of Biochemistry, University of Otago, Box 56, Dunedin, New Zealand
| | | | - Ruth K Topless
- Department of Biochemistry, University of Otago, Box 56, Dunedin, New Zealand
| | - Tanya J Major
- Department of Biochemistry, University of Otago, Box 56, Dunedin, New Zealand
| | - Murray Cadzow
- Department of Biochemistry, University of Otago, Box 56, Dunedin, New Zealand
| | - Philip Riches
- Rheumatic Diseases Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Anne-Kathrin Tausche
- Department of Rheumatology, University Clinic "Carl-Gustav-Carus", Dresden, Germany
| | - Matthijs Janssen
- Department of Rheumatology, VieCuri Medical Center, Venlo, The Netherlands
| | - Leo A B Joosten
- Department of Internal Medicine and Radboud Institute of Molecular Life Science, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Medical Genetics, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Tim L Jansen
- Department of Rheumatology, VieCuri Medical Center, Venlo, The Netherlands
| | - Alexander So
- Laboratory of Rheumatology, University of Lausanne, CHUV, Nestlé 05-5029, 1011, Lausanne, Switzerland
| | | | - Lisa K Stamp
- Department of Medicine, University of Otago, Christchurch, PO Box 4345, Christchurch, New Zealand
| | - Nicola Dalbeth
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Tony R Merriman
- Department of Biochemistry, University of Otago, Box 56, Dunedin, New Zealand.
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18
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Abd El Maksoud AI, Elebeedy D, Abass NH, Awad AM, Nasr GM, Roshdy T, Khalil H. Methylomic Changes of Autophagy-Related Genes by Legionella Effector Lpg2936 in Infected Macrophages. Front Cell Dev Biol 2020; 7:390. [PMID: 32064256 PMCID: PMC6999459 DOI: 10.3389/fcell.2019.00390] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 12/23/2019] [Indexed: 12/26/2022] Open
Abstract
Legionella pneumophila (L. pneumophila) is a Gram-negative bacterium that infects the human respiratory tract causing Legionnaires’ disease, a severe form of pneumonia. Recently, rising evidence indicated the ability of Legionella to regulate host defense via its type 4 secretion system including hundreds of effectors that promote intracellular bacterial replication. The host defense against such invaders includes autophagic machinery that is responsible for degradation events of invading pathogens and recycling of cell components. The interplay between host autophagy and Legionella infection has been reported, indicating the role of bacterial effectors in the regulation of autophagy during intracellular replication. Here, we investigated the potential impact of Legionella effector Lpg2936 in the regulation of host autophagy and its role in bacterial replication using mice-derived macrophages and human lung epithelial cells (A549 cells). First, monitoring of autophagic flux following infection revealed a marked reduction of Atg7 and LC3B expression profile and low accumulation levels of autophagy-related LC3-I, LC3-II, and the Atg12–Atg5 protein complex. A novel methyladenine alteration was observed due to irreversible changes of GATC motif to G(6 mA) TC in the promoter region of Atg7 and LC3B indicated by cleaved genomic-DNA using the N6 methyladenine-sensitive restriction enzyme DpnI. Interestingly, RNA interference (RNAi) of Lpg2936 in infected macrophages showed dramatic inhibition of bacterial replication by restoring the expression of autophagy-related proteins. This is accompanied by low production levels of bacterial-associated pro-inflammatory cytokines. Furthermore, a constructed Lpg2936 segment in the GFP expression vector was translocated in the host nucleus and successfully induced methyladenine changes in Atg7 and LC3B promoter region and subsequently regulated autophagy in A549 cells independent of infection. Finally, treatment with methylation inhibitors 5-AZA and (2)-Epigallocatechin-3-gallate (EGCG) was able to restore autophagy-related gene expression and to disrupt bacterial replication in infected macrophages. This cumulative evidence indicates the methylation effect of Legionella effector Lpg2936 on the host autophagy-related molecules Atg7 and LC3B and subsequent reduction in the expression levels of autophagy effectors during intracellular replication of L. pneumophila.
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Affiliation(s)
- Ahmed I Abd El Maksoud
- Industrial Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Dalia Elebeedy
- College of Biotechnology, Misr University for Science and Technology (MUST), 6th of October City, Egypt
| | - Nasser H Abass
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Ahmed M Awad
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Ghada M Nasr
- Molecular Diagnostics Department, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Tamer Roshdy
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Hany Khalil
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
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19
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de Carvalho RVH, Lima-Junior DS, da Silva MVG, Dilucca M, Rodrigues TS, Horta CV, Silva ALN, da Silva PF, Frantz FG, Lorenzon LB, Souza MM, Almeida F, Cantanhêde LM, Ferreira RDGM, Cruz AK, Zamboni DS. Leishmania RNA virus exacerbates Leishmaniasis by subverting innate immunity via TLR3-mediated NLRP3 inflammasome inhibition. Nat Commun 2019; 10:5273. [PMID: 31754185 PMCID: PMC6872735 DOI: 10.1038/s41467-019-13356-2] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 10/24/2019] [Indexed: 12/13/2022] Open
Abstract
Leishmania RNA virus (LRV) is an important virulence factor associated with the development of mucocutaneous Leishmaniasis, a severe form of the disease. LRV-mediated disease exacerbation relies on TLR3 activation, but downstream mechanisms remain largely unexplored. Here, we combine human and mouse data to demonstrate that LRV triggers TLR3 and TRIF to induce type I IFN production, which induces autophagy. This process results in ATG5-mediated degradation of NLRP3 and ASC, thereby limiting NLRP3 inflammasome activation in macrophages. Consistent with the known restricting role of NLRP3 for Leishmania replication, the signaling pathway triggered by LRV results in increased parasite survival and disease progression. In support of this data, we find that lesions in patients infected with LRV+ Leishmania are associated with reduced inflammasome activation and the development of mucocutaneous disease. Our findings reveal the mechanisms triggered by LRV that contribute to the development of the debilitating mucocutaneous form of Leishmaniasis.
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Affiliation(s)
- Renan V H de Carvalho
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Djalma S Lima-Junior
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Marcus Vinícius G da Silva
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Marisa Dilucca
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Tamara S Rodrigues
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Catarina V Horta
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Alexandre L N Silva
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Patrick F da Silva
- Laboratório de Imunologia e Epigenética, Departamento de Análises Clínicas, Toxicológicas e Bromatologia, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Fabiani G Frantz
- Laboratório de Imunologia e Epigenética, Departamento de Análises Clínicas, Toxicológicas e Bromatologia, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Lucas B Lorenzon
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Marcos Michel Souza
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fausto Almeida
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | | | | | - Angela K Cruz
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Dario S Zamboni
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
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Pu Q, Lin P, Wang Z, Gao P, Qin S, Cui L, Wu M. Interaction among inflammasome, autophagy and non-coding RNAs: new horizons for drug. PRECISION CLINICAL MEDICINE 2019; 2:166-182. [PMID: 31598387 PMCID: PMC6770284 DOI: 10.1093/pcmedi/pbz019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/22/2019] [Accepted: 08/25/2019] [Indexed: 02/07/2023] Open
Abstract
Autophagy and inflammasomes are shown to interact in various situations including
infectious disease, cancer, diabetes and neurodegeneration. Since multiple layers of
molecular regulators contribute to the interplay between autophagy and inflammasome
activation, the detail of such interplay remains largely unknown. Non-coding RNAs
(ncRNAs), which have been implicated in regulating an expanding list of cellular processes
including immune defense against pathogens and inflammatory response in cancer and
metabolic diseases, may join in the crosstalk between inflammasomes and autophagy in
physiological or disease conditions. In this review, we summarize the latest research on
the interlink among ncRNAs, inflammasomes and autophagy and discuss the emerging role of
these three in multiple signaling transduction pathways involved in clinical conditions.
By analyzing these intriguing interconnections, we hope to unveil the mechanism
inter-regulating these multiple processes and ultimately discover potential drug targets
for some refractory diseases.
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Affiliation(s)
- Qinqin Pu
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND 58203, USA.,State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Ping Lin
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND 58203, USA
| | - Zhihan Wang
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - Pan Gao
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Shugang Qin
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Luqing Cui
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND 58203, USA
| | - Min Wu
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND 58203, USA
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Khalil H, Abd El Maksoud AI, Alian A, El-Hamady WA, Daif AA, Awad AM, Guirgis AA. Interruption of Autophagosome Formation in Cardiovascular Disease, an Evidence for Protective Response of Autophagy. Immunol Invest 2019; 49:249-263. [PMID: 31264496 DOI: 10.1080/08820139.2019.1635619] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND A heart attack occurs when coronary artery blockage interrupts the blood supply to the heart such as is seen in cardiovascular disease (CVD). Importantly, autophagy is commonly regarded as a host defense mechanism against microbial invaders. METHODS A total of 50 blood samples were obtained from cardiovascular (CV) patients in addition to 30 samples that were obtained from healthy individuals and served as controls. Macrophages were isolated in vitro and propagated from the blood samples. Autophagosome formation, cytokine secretion, and apolipoprotein B (ApoB) gene expression were monitored in patient samples and their derived macrophages. RESULTS The results showed that autophagy-related (Atg) LC3 and Atg5 genes were significantly down-regulated in all samples obtained from CV patients. Furthermore, the relative gene expression of ApoB, which plays the major role in lipoprotein metabolism, was significantly increased in CV patients. Interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) levels were increased in these blood samples. Interestingly, targeting of ApoB by small interference RNA (siRNA) reduced the production levels of low-density lipoprotein (LDL), IL-6 and TNF-α in patient-derived macrophages. Further, treatment of patient-derived macrophages with rapamycin, an autophagy inducer agent, successfully regulated the production of LDL, IL-6, TNF-α, and ApoB expression via activation of autophagosome formation. CONCLUSION The current data reveal the potential disturbance of autophagy in CV patients that accompanied ApoB over-expression. Furthermore, our findings provide evidence for the protective role of autophagy in accumulation of pro-inflammatory cytokines and intracellular LDL degradation in CV patient-derived macrophages.
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Affiliation(s)
- Hany Khalil
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Ahmed I Abd El Maksoud
- Industrial Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Amira Alian
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Waleed A El-Hamady
- Department of Cardiology and Blood vessels, Faculty of Medicine, University of Ain-Shams, Cairo, Egypt
| | - Ahmed A Daif
- Molecular Diagnostics Department, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Ahmed M Awad
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Adel A Guirgis
- Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
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Associations of a NLRP3 rs10754558 Polymorphism with Helicobacter pylori-Infected Patients with Gastritis and Peptic Ulcer Disease. Jundishapur J Microbiol 2019. [DOI: 10.5812/jjm.88231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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23
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Tominello TR, Oliveira ERA, Hussain SS, Elfert A, Wells J, Golden B, Ismail N. Emerging Roles of Autophagy and Inflammasome in Ehrlichiosis. Front Immunol 2019; 10:1011. [PMID: 31134081 PMCID: PMC6517498 DOI: 10.3389/fimmu.2019.01011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 04/23/2019] [Indexed: 12/16/2022] Open
Abstract
Human monocytic ehrlichiosis (HME) is a potentially life-threatening tick-borne rickettsial disease (TBRD) caused by the obligate intracellular Gram-negative bacteria, Ehrlichia. Fatal HME presents with acute ailments of sepsis and toxic shock-like symptoms that can evolve to multi-organ failure and death. Early clinical and laboratory diagnosis of HME are problematic due to non-specific flu-like symptoms and limitations in the current diagnostic testing. Several studies in murine models showed that cell-mediated immunity acts as a “double-edged sword” in fatal ehrlichiosis. Protective components are mainly formed by CD4 Th1 and NKT cells, in contrast to deleterious effects originated from neutrophils and TNF-α-producing CD8 T cells. Recent research has highlighted the central role of the inflammasome and autophagy as part of innate immune responses also leading to protective or pathogenic scenarios. Recognition of pathogen-associated molecular patterns (PAMPS) or damage-associated molecular patterns (DAMPS) triggers the assembly of the inflammasome complex that leads to multiple outcomes. Recognition of PAMPs or DAMPs by such complexes can result in activation of caspase-1 and -11, secretion of the pro-inflammatory cytokines IL-1β and IL-18 culminating into dysregulated inflammation, and inflammatory cell death known as pyroptosis. The precise functions of inflammasomes and autophagy remain unexplored in infections with obligate intracellular rickettsial pathogens, such as Ehrlichia. In this review, we discuss the intracellular innate immune surveillance in ehrlichiosis involving the regulation of inflammasome and autophagy, and how this response influences the innate and adaptive immune responses against Ehrlichia. Understanding such mechanisms would pave the way in research for novel diagnostic, preventative and therapeutic approaches against Ehrlichia and other rickettsial diseases.
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Affiliation(s)
- Tyler R Tominello
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Edson R A Oliveira
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Shah S Hussain
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Amr Elfert
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Jakob Wells
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Brandon Golden
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Nahed Ismail
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
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Yoo YM, Jung EM, Jeung EB. Rapamycin-induced autophagy decreases Myf5 and MyoD proteins in C2C12 myoblast cells. Toxicol In Vitro 2019; 58:132-141. [PMID: 30905858 DOI: 10.1016/j.tiv.2019.03.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 03/20/2019] [Accepted: 03/20/2019] [Indexed: 12/19/2022]
Abstract
Rapamycin is an immunosuppressant that inhibits the mammalian or mechanistic target of rapamycin (mTOR) protein kinase and extends lifespan in organisms including mice. Myf5 and MyoD act as muscle-specific transcriptional factors for skeletal muscle differentiation. In this study, we determined whether rapamycin-induced autophagy causes the decrease of Myf5 and MyoD protein in C2C12 myoblast cells. Rapamycin induced a significant increase in the expression of the microtubule-associated protein 1 light chain 3 (LC3) II protein in a dose-dependent manner for 12 h. Rapamycin treatment also significantly increased p-ERK, p-Akt, and catalase expressions, and decreased Mn-SOD expression in a dose-dependent manner. Bax expression was significantly high compared to Bcl-2 expression in a dose-dependent manner of rapamycin for 12 h. For further study of rapamycin-induced autophagy in C2C12 myoblast cells, we investigated rapamycin treatment for 24, 36, and 48 h. Cell viability did not change with rapamycin treatment for 24, 36, and 48 h. Rapamycin-induced LC3-II, Beclin-1, Bax, and Bcl-2 proteins were significantly increased compared to without rapamycin. p-ERK expression increased with rapamycin treatment for 24 and 36 h compared to that without rapamycin, but decreased for 48 h. p-Akt expression decreased with rapamycin treatment for 36 and 48 h compared to that without rapamycin. In the same conditions, rapamycin-induced autophagy significantly reduced the Myf5 and MyoD proteins. Together, these results suggest that rapamycin-induced autophagy results in the decrease of Myf5 and MyoD proteins in C2C12 myoblast cells.
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Affiliation(s)
- Yeong-Min Yoo
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Eui-Man Jung
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Eui-Bae Jeung
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
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Acinetobacter baumannii outer membrane protein A induces HeLa cell autophagy via MAPK/JNK signaling pathway. Int J Med Microbiol 2019; 309:97-107. [DOI: 10.1016/j.ijmm.2018.12.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 12/14/2018] [Accepted: 12/28/2018] [Indexed: 12/13/2022] Open
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26
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Giampieri F, Afrin S, Forbes-Hernandez TY, Gasparrini M, Cianciosi D, Reboredo-Rodriguez P, Varela-Lopez A, Quiles JL, Battino M. Autophagy in Human Health and Disease: Novel Therapeutic Opportunities. Antioxid Redox Signal 2019; 30:577-634. [PMID: 29943652 DOI: 10.1089/ars.2017.7234] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
SIGNIFICANCE In eukaryotes, autophagy represents a highly evolutionary conserved process, through which macromolecules and cytoplasmic material are degraded into lysosomes and recycled for biosynthetic or energetic purposes. Dysfunction of the autophagic process has been associated with the onset and development of many human chronic pathologies, such as cardiovascular, metabolic, and neurodegenerative diseases as well as cancer. Recent Advances: Currently, comprehensive research is being carried out to discover new therapeutic agents that are able to modulate the autophagic process in vivo. Recent evidence has shown that a large number of natural bioactive compounds are involved in the regulation of autophagy by modulating several transcriptional factors and signaling pathways. CRITICAL ISSUES Critical issues that deserve particular attention are the inadequate understanding of the complex role of autophagy in disease pathogenesis, the limited availability of therapeutic drugs, and the lack of clinical trials. In this context, the effects that natural bioactive compounds exert on autophagic modulation should be clearly highlighted, since they depend on the type and stage of the pathological conditions of diseases. FUTURE DIRECTIONS Research efforts should now focus on understanding the survival-supporting and death-promoting roles of autophagy, how natural compounds interact exactly with the autophagic targets so as to induce or inhibit autophagy and on the evaluation of their pharmacological effects in a more in-depth and mechanistic way. In addition, clinical studies on autophagy-inducing natural products are strongly encouraged, also to highlight some fundamental aspects, such as the dose, the duration, and the possible synergistic action of these compounds with conventional therapy.
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Affiliation(s)
- Francesca Giampieri
- 1 Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche-Sez. Biochimica , Facoltà di Medicina, Università Politecnica delle Marche , Ancona, Italy
| | - Sadia Afrin
- 1 Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche-Sez. Biochimica , Facoltà di Medicina, Università Politecnica delle Marche , Ancona, Italy
| | - Tamara Y Forbes-Hernandez
- 1 Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche-Sez. Biochimica , Facoltà di Medicina, Università Politecnica delle Marche , Ancona, Italy .,2 Area de Nutricion y Salud, Universidad Internacional Iberoamericana , Campeche, Mexico
| | - Massimiliano Gasparrini
- 1 Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche-Sez. Biochimica , Facoltà di Medicina, Università Politecnica delle Marche , Ancona, Italy
| | - Danila Cianciosi
- 1 Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche-Sez. Biochimica , Facoltà di Medicina, Università Politecnica delle Marche , Ancona, Italy
| | - Patricia Reboredo-Rodriguez
- 1 Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche-Sez. Biochimica , Facoltà di Medicina, Università Politecnica delle Marche , Ancona, Italy .,3 Departamento de Quimica Analıtica y Alimentaria, Grupo de Nutricion y Bromatologıa, Universidade Vigo , Ourense, Spain
| | - Alfonso Varela-Lopez
- 1 Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche-Sez. Biochimica , Facoltà di Medicina, Università Politecnica delle Marche , Ancona, Italy
| | - Jose L Quiles
- 4 Department of Physiology, Institute of Nutrition and Food Technology "Jose Mataix," Biomedical Research Centre, University of Granada , Granada, Spain
| | - Maurizio Battino
- 1 Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche-Sez. Biochimica , Facoltà di Medicina, Università Politecnica delle Marche , Ancona, Italy .,5 Centre for Nutrition and Health, Universidad Europea del Atlantico (UEA) , Santander, Spain
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Inflammasome Genes' Polymorphisms in Egyptian Chronic Hepatitis C Patients: Influence on Vulnerability to Infection and Response to Treatment. Mediators Inflamm 2019; 2019:3273645. [PMID: 30728751 PMCID: PMC6343134 DOI: 10.1155/2019/3273645] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 12/09/2018] [Indexed: 12/12/2022] Open
Abstract
Chronic inflammation is a pivotal contributor to the liver damage mediated by hepatitis C virus (HCV). The NOD-like receptor, pyrin domain-containing 3 (NLRP3) inflammasome is activated by HCV in both hepatocytes and Kupffer cells. The aim of our study was to investigate the association of nine single-nucleotide polymorphisms in four inflammasome genes (NLRP3, CARD8, IL-1β, and IL-18) with the susceptibility to HCV infection and outcome of interferon treatment in 201 Egyptian chronic hepatitis C patients and 95 healthy controls. The genotyping was conducted using TaqMan predesigned SNP assay. In the comparative analysis, the CC genotype of the NLRP3 rs1539019 was found to be associated with the lower risk to chronic HCV infection (OR: 0.33, 95% CI: 0.17-0.62). This association was also found for the CA genotype and the A allele of the NLRP3 rs35829419 (OR: 0.18 and 0.22, respectively), in addition to the GG genotype and G allele of IL-18 rs1946518 (OR: 0.55 and 0.61, respectively). In contrast, the AA genotype of the IL-1β rs1143629 was significantly more frequent in HCV patients (OR: 1.7, 95% CI: 1-2.86). Notably, the frequency of the AA genotype of NLRP3 rs1539019 was significantly higher in patients with lack of response (NR) to the interferon treatment (OR: 1.95, 95% CI: 1-3.7). A similar association was found for both the CC genotype and C allele of the NLRP3 rs35829419 (OR: 2.78 and 2.73, respectively) and for the TT genotype and T allele of CARD8 rs2043211 (OR: 2.64 and 1.54, respectively). Yet, the IL-1β (rs1143629, rs1143634) and IL-18 (rs187238, rs1946518) polymorphisms did not show any significant association with response to interferon treatment. In conclusion, this study reports, for the first time, the association of genetic variations in NLRP3 with hepatitis C susceptibility and response to treatment in Egyptian patients. However, further large-scale studies are recommended to confirm our findings.
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28
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Parker H, Bigger BW. The role of innate immunity in mucopolysaccharide diseases. J Neurochem 2018; 148:639-651. [PMID: 30451296 PMCID: PMC6590380 DOI: 10.1111/jnc.14632] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 07/16/2018] [Accepted: 11/15/2018] [Indexed: 12/13/2022]
Abstract
Mucopolysaccharidoses are lysosomal storage disorders characterised by accumulation of abnormal pathological glycosaminoglycans, cellular dysfunction and widespread inflammation, resulting in progressive cognitive and motor decline. Lysosomes are important mediators of immune cell function, and therefore accumulation of glycosaminoglycans (GAGs) and other abnormal substrates could affect immune function and directly impact on disease pathogenesis. This review summarises current knowledge with regard to inflammation in mucopolysaccharidosis, with an emphasis on the brain and outlines a potential role for GAGs in induction of inflammation. We propose a model by which the accumulation of GAGs and other factors may impact on innate immune signalling with particular focus on the Toll‐like receptor 4 pathway. Innate immunity appears to have a dominating role in mucopolysaccharidosis; however, furthering understanding of innate immune signalling would have significant impact on highlighting novel anti‐inflammatory therapeutics for use in mucopolysaccharide diseases. ![]()
This article is part of the Special Issue “Lysosomal Storage Disorders”.
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Affiliation(s)
- Helen Parker
- Stem Cell and NeurotherapiesDivision of Cell Matrix Biology and Regenerative MedicineFaculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
| | - Brian W. Bigger
- Stem Cell and NeurotherapiesDivision of Cell Matrix Biology and Regenerative MedicineFaculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
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Luan J, Ju D. Inflammasome: A Double-Edged Sword in Liver Diseases. Front Immunol 2018; 9:2201. [PMID: 30319645 PMCID: PMC6167446 DOI: 10.3389/fimmu.2018.02201] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 09/05/2018] [Indexed: 12/20/2022] Open
Abstract
Inflammasomes have emerged as critical innate sensors of host immune that defense against pathogen infection, metabolism syndrome, cellular stress and cancer metastasis in the liver. The assembly of inflammasome activates caspase-1, which promotes the maturation of interleukin-1β (IL-1β) and interleukin-18 (IL-18), and initiates pyroptotic cell death (pyroptosis). IL-18 exerts pleiotropic effects on hepatic NK cells, priming FasL-mediated cytotoxicity, and interferon-γ (IFN-γ)-dependent responses to prevent the development of liver diseases. However, considerable attention has been attracted to the pathogenic role of inflammasomes in various acute and chronic liver diseases, including viral hepatitis, nanoparticle-induced liver injury, alcoholic and non-alcoholic steatohepatitis. In this review, we summarize the latest advances on the physiological and pathological roles of inflammasomes for further development of inflammasome-based therapeutic strategies for human liver diseases.
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Affiliation(s)
- Jingyun Luan
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, China
| | - Dianwen Ju
- Department of Microbiological and Biochemical Pharmacy & The Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, Shanghai, China
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Tao J, Yang M, Wu H, Ma T, He C, Chai M, Zhang X, Zhang J, Ding F, Wang S, Deng S, Zhu K, Song Y, Ji P, Liu H, Lian Z, Liu G. Effects of AANAT overexpression on the inflammatory responses and autophagy activity in the cellular and transgenic animal levels. Autophagy 2018; 14:1850-1869. [PMID: 29985091 DOI: 10.1080/15548627.2018.1490852] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
To explore the anti-inflammatory activity of endogenous produced melatonin, a melatonin-enriched animal model (goat) with AANAT transfer was successfully generated with somatic cell nuclear transfer (SCNT) technology. Basically, a pIRES2-EGFP-AANAT expression vector was constructed and was transferred into the female fetal fibroblast cells (FFCs) via electrotransfection and then the nuclear of the transgenic FFC was transferred to the eggs of the donor goats. The peripheral blood mononuclear cells (PBMCs) of the transgenic offspring expressed significantly higher levels of AANAT and melatonin synthetic function than those PBMCs from the wild-type (WT) animals. After challenge with lipopolysaccharide (LPS), the transgenic PBMCs had increased autophagosomes and LC3B expression while they exhibited suppressed production of the proinflammatory cytokines, IL1B and IL12 (IL12A-IL12B/p70), compared to their WT. The mechanistic analysis indicated that the anti-inflammatory activity of endogenous melatonin was mediated by MTNR1B (melatonin receptor 1B). MTNR1B stimulation activated the MAPK14 signaling pathway to promote cellular macroautophagy/autophagy, thus, suppressing the excessive inflammatory response of cellular. However, when the intact animals challenged with LPS, the serum proinflammatory cytokines were significantly higher in the transgenic goats than that in the WT. The results indicated that endogenous melatonin inhibited the MAPK1/3 signaling pathway and ROS production, subsequently downregulated gene expression of BECN1, ATG5 in PMBCs and then suppressed the autophagy activity of PBMCs and finally elevated levels of serum proinflammatory cytokines in transgenic animals, Herein we provided a novel melatonin-enriched animal model to study the potential effects of endogenously produced melatonin on inflammatory responses and autophagy activity.
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Affiliation(s)
- Jingli Tao
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China
| | - Minghui Yang
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China
| | - Hao Wu
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China
| | - Teng Ma
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China
| | - Changjiu He
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China.,b College of Animal Science and Technology , Huazhong Agricultural University , Wuhan , China
| | - Menglong Chai
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China
| | - Xiaosheng Zhang
- c Institute of Animal Husbandry and Veterinary , Academy of Agricultural Sciences of Tianjin , Tianjin , China
| | - Jinlong Zhang
- c Institute of Animal Husbandry and Veterinary , Academy of Agricultural Sciences of Tianjin , Tianjin , China
| | - Fangrong Ding
- d State Key Laboratory of Agrobiotechnology, College of Biological Sciences , China Agricultural University , Beijing , China
| | - Sutian Wang
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China
| | - Shoulong Deng
- e State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology , Chinese Academy of Sciences , Beijing , China
| | - Kuanfeng Zhu
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China
| | - Yukun Song
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China
| | - Pengyun Ji
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China
| | - Haijun Liu
- c Institute of Animal Husbandry and Veterinary , Academy of Agricultural Sciences of Tianjin , Tianjin , China
| | - Zhengxing Lian
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China
| | - Guoshi Liu
- a National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology , China Agricultural University , Beijing , China
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31
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Kozhevnikov ML, Shipulin VM, Sukhodolo IV. [The virus-immune hypothesis for cardiac dilatation]. TERAPEVT ARKH 2017; 89:79-83. [PMID: 29260750 DOI: 10.17116/terarkh2017891179-83] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The paper gives an update on the pathogenetic role of viral infection and immune mechanisms in the development of cardiac dilatation at the cellular, ultrastructural, and molecular levels. Particular attention is given to the discussion of the possible role of herpesvirus infection in the mechanisms of cardiomyocyte damage with the direct or indirect impact of viral infection through immunoinflammatory responses. Data on the protective and damaging action of a number of cytokines in the immunopathogenesis of viral myocarditis are considered.
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Affiliation(s)
- M L Kozhevnikov
- Virion Research-and-Production Association, Branch, Microgen Research-and-Production Association, Ministry of Health of Russia, Tomsk, Russia
| | - V M Shipulin
- Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - I V Sukhodolo
- Siberian State Medical University, Ministry of Health of Russia, Tomsk, Russia
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Seveau S, Turner J, Gavrilin MA, Torrelles JB, Hall-Stoodley L, Yount JS, Amer AO. Checks and Balances between Autophagy and Inflammasomes during Infection. J Mol Biol 2017; 430:174-192. [PMID: 29162504 DOI: 10.1016/j.jmb.2017.11.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 11/05/2017] [Accepted: 11/09/2017] [Indexed: 12/24/2022]
Abstract
Autophagy and inflammasome complex assembly are physiological processes that control homeostasis, inflammation, and immunity. Autophagy is a ubiquitous pathway that degrades cytosolic macromolecules or organelles, as well as intracellular pathogens. Inflammasomes are multi-protein complexes that assemble in the cytosol of cells upon detection of pathogen- or danger-associated molecular patterns. A critical outcome of inflammasome assembly is the activation of the cysteine protease caspase-1, which activates the pro-inflammatory cytokine precursors pro-IL-1β and pro-IL-18. Studies on chronic inflammatory diseases, heart diseases, Alzheimer's disease, and multiple sclerosis revealed that autophagy and inflammasomes intersect and regulate each other. In the context of infectious diseases, however, less is known about the interplay between autophagy and inflammasome assembly, although it is becoming evident that pathogens have evolved multiple strategies to inhibit and/or subvert these pathways and to take advantage of their intricate crosstalk. An improved appreciation of these pathways and their subversion by diverse pathogens is expected to help in the design of anti-infective therapeutic interventions.
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Affiliation(s)
- Stephanie Seveau
- Department of Microbial Infection and Immunity, College of Medicine, The Ohio State University, Columbus, OH, 43210, USA; Infectious Diseases Institute, The Ohio State University, Columbus, OH, USA.
| | - Joanne Turner
- Texas Biomedical Research Institute, San Antonio, TX 78227, USA
| | - Mikhail A Gavrilin
- Infectious Diseases Institute, The Ohio State University, Columbus, OH, USA; Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA
| | | | - Luanne Hall-Stoodley
- Department of Microbial Infection and Immunity, College of Medicine, The Ohio State University, Columbus, OH, 43210, USA; Infectious Diseases Institute, The Ohio State University, Columbus, OH, USA
| | - Jacob S Yount
- Department of Microbial Infection and Immunity, College of Medicine, The Ohio State University, Columbus, OH, 43210, USA; Infectious Diseases Institute, The Ohio State University, Columbus, OH, USA
| | - Amal O Amer
- Department of Microbial Infection and Immunity, College of Medicine, The Ohio State University, Columbus, OH, 43210, USA; Infectious Diseases Institute, The Ohio State University, Columbus, OH, USA
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Tazi MF, Dakhlallah DA, Caution K, Gerber MM, Chang SW, Khalil H, Kopp BT, Ahmed AE, Krause K, Davis I, Marsh C, Lovett-Racke AE, Schlesinger LS, Cormet-Boyaka E, Amer AO. Elevated Mirc1/Mir17-92 cluster expression negatively regulates autophagy and CFTR (cystic fibrosis transmembrane conductance regulator) function in CF macrophages. Autophagy 2017; 12:2026-2037. [PMID: 27541364 DOI: 10.1080/15548627.2016.1217370] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Cystic fibrosis (CF) is a fatal, genetic disorder that critically affects the lungs and is directly caused by mutations in the CF transmembrane conductance regulator (CFTR) gene, resulting in defective CFTR function. Macroautophagy/autophagy is a highly regulated biological process that provides energy during periods of stress and starvation. Autophagy clears pathogens and dysfunctional protein aggregates within macrophages. However, this process is impaired in CF patients and CF mice, as their macrophages exhibit limited autophagy activity. The study of microRNAs (Mirs), and other noncoding RNAs, continues to offer new therapeutic targets. The objective of this study was to elucidate the role of Mirs in dysregulated autophagy-related genes in CF macrophages, and then target them to restore this host-defense function and improve CFTR channel function. We identified the Mirc1/Mir17-92 cluster as a potential negative regulator of autophagy as CF macrophages exhibit decreased autophagy protein expression and increased cluster expression when compared to wild-type (WT) counterparts. The absence or reduced expression of the cluster increases autophagy protein expression, suggesting the canonical inverse relationship between Mirc1/Mir17-92 and autophagy gene expression. An in silico study for targets of Mirs that comprise the cluster suggested that the majority of the Mirs target autophagy mRNAs. Those targets were validated by luciferase assays. Notably, the ability of macrophages expressing mutant F508del CFTR to transport halide through their membranes is compromised and can be restored by downregulation of these inherently elevated Mirs, via restoration of autophagy. In vivo, downregulation of Mir17 and Mir20a partially restored autophagy expression and hence improved the clearance of Burkholderia cenocepacia. Thus, these data advance our understanding of mechanisms underlying the pathobiology of CF and provide a new therapeutic platform for restoring CFTR function and autophagy in patients with CF.
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Affiliation(s)
- Mia F Tazi
- a Department of Microbial Infection and Immunity, Center for Microbial Interface Biology , The Ohio State University , Columbus , OH , USA.,b Davis Heart and Lung Research Institute , The Ohio State University , Columbus , OH , USA
| | - Duaa A Dakhlallah
- b Davis Heart and Lung Research Institute , The Ohio State University , Columbus , OH , USA
| | - Kyle Caution
- a Department of Microbial Infection and Immunity, Center for Microbial Interface Biology , The Ohio State University , Columbus , OH , USA.,b Davis Heart and Lung Research Institute , The Ohio State University , Columbus , OH , USA
| | - Madelyn M Gerber
- a Department of Microbial Infection and Immunity, Center for Microbial Interface Biology , The Ohio State University , Columbus , OH , USA.,b Davis Heart and Lung Research Institute , The Ohio State University , Columbus , OH , USA
| | - Sheng-Wei Chang
- b Davis Heart and Lung Research Institute , The Ohio State University , Columbus , OH , USA.,c Department of Veterinary Biosciences , The Ohio State University , Columbus , OH , USA
| | - Hany Khalil
- d Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute , University of Sadat City , Egypt
| | | | - Amr E Ahmed
- a Department of Microbial Infection and Immunity, Center for Microbial Interface Biology , The Ohio State University , Columbus , OH , USA.,b Davis Heart and Lung Research Institute , The Ohio State University , Columbus , OH , USA
| | - Kathrin Krause
- a Department of Microbial Infection and Immunity, Center for Microbial Interface Biology , The Ohio State University , Columbus , OH , USA.,b Davis Heart and Lung Research Institute , The Ohio State University , Columbus , OH , USA
| | - Ian Davis
- c Department of Veterinary Biosciences , The Ohio State University , Columbus , OH , USA
| | - Clay Marsh
- b Davis Heart and Lung Research Institute , The Ohio State University , Columbus , OH , USA
| | - Amy E Lovett-Racke
- a Department of Microbial Infection and Immunity, Center for Microbial Interface Biology , The Ohio State University , Columbus , OH , USA
| | - Larry S Schlesinger
- a Department of Microbial Infection and Immunity, Center for Microbial Interface Biology , The Ohio State University , Columbus , OH , USA.,b Davis Heart and Lung Research Institute , The Ohio State University , Columbus , OH , USA
| | - Estelle Cormet-Boyaka
- b Davis Heart and Lung Research Institute , The Ohio State University , Columbus , OH , USA.,c Department of Veterinary Biosciences , The Ohio State University , Columbus , OH , USA
| | - Amal O Amer
- a Department of Microbial Infection and Immunity, Center for Microbial Interface Biology , The Ohio State University , Columbus , OH , USA.,b Davis Heart and Lung Research Institute , The Ohio State University , Columbus , OH , USA
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34
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Kader M, Alaoui-EL-Azher M, Vorhauer J, Kode BB, Wells JZ, Stolz D, Michalopoulos G, Wells A, Scott M, Ismail N. MyD88-dependent inflammasome activation and autophagy inhibition contributes to Ehrlichia-induced liver injury and toxic shock. PLoS Pathog 2017; 13:e1006644. [PMID: 29049365 PMCID: PMC5663626 DOI: 10.1371/journal.ppat.1006644] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 10/31/2017] [Accepted: 09/11/2017] [Indexed: 01/19/2023] Open
Abstract
Severe hepatic inflammation is a common cause of acute liver injury following systemic infection with Ehrlichia, obligate Gram-negative intracellular bacteria that lack lipopolysaccharide (LPS). We have previously shown that type I IFN (IFN-I) and inflammasome activation are key host-pathogenic mediators that promote excessive inflammation and liver damage following fatal Ehrlichia infection. However, the underlying signals and mechanisms that regulate protective immunity and immunopathology during Ehrlichia infection are not well understood. To address this issue, we compared susceptibility to lethal Ixodes ovatus Ehrlichia (IOE) infection between wild type (WT) and MyD88-deficient (MyD88-/-) mice. We show here that MyD88-/- mice exhibited decreased inflammasome activation, attenuated liver injury, and were more resistant to lethal infection than WT mice, despite suppressed protective immunity and increased bacterial burden in the liver. MyD88-dependent inflammasome activation was also dependent on activation of the metabolic checkpoint kinase mammalian target of rapamycin complex 1 (mTORC1), inhibition of autophagic flux, and defective mitophagy in macrophages. Blocking mTORC1 signaling in infected WT mice and primary macrophages enhanced bacterial replication and attenuated inflammasome activation, suggesting autophagy promotes bacterial replication while inhibiting inflammasome activation. Finally, our data suggest TLR9 and IFN-I are upstream signaling mechanisms triggering MyD88-mediated mTORC1 and inflammasome activation in macrophages following Ehrlichia infection. This study reveals that Ehrlichia-induced liver injury and toxic shock are mediated by MyD88-dependent inflammasome activation and autophagy inhibition. Human monocytic ehrlichiosis (HME) is the most prevalent emerging infectious disease in the United States. Ehrlichia chaffeensis, etiologic agent of HME, is a Gram negative obligate intracellular bacterium transmitted by infected tick bites and can infect different cell type. Although Ehrlichia lack lipopolysaccharide (LPS), they induce potentially life threatening HME that mimic sepsis or toxic shock associated with multi-organ failure. The clinical diagnosis of HME is difficult, and definitive diagnosis is most often retrospective. Late antibiotic treatment is frequently ineffective in preventing disease progression to fatal multi-organ failure. Liver failure is one of the most serious complications and the most frequent cause of death in patients with HME, however we only have a limited understanding of how this liver failure is caused during fatal Ehrlichia infection. The objective of this study is to determine how LPS-negative Ehrlichia activates inflammatory responses in macrophages during Ehrlichia infection to promote liver damage. We show here that MyD88-signaling causes detrimental derangement of the immune system and subsequent liver damage by regulating two key innate immune events in macrophages: autophagy and inflammasome activation. Targeting host-pathogenic pathways in ehrlichiosis can be incorporated into future design of novel therapeutic approaches for HME.
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MESH Headings
- Animals
- Autophagy/immunology
- Blotting, Western
- Disease Models, Animal
- Ehrlichia/immunology
- Ehrlichiosis/immunology
- Ehrlichiosis/metabolism
- Enzyme-Linked Immunosorbent Assay
- Female
- Flow Cytometry
- Fluorescent Antibody Technique
- Image Processing, Computer-Assisted
- In Situ Nick-End Labeling
- Inflammasomes/immunology
- Inflammasomes/metabolism
- Liver Failure, Acute/immunology
- Liver Failure, Acute/metabolism
- Liver Failure, Acute/microbiology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Microscopy, Confocal
- Microscopy, Electron, Transmission
- Myeloid Differentiation Factor 88/immunology
- Myeloid Differentiation Factor 88/metabolism
- Real-Time Polymerase Chain Reaction
- Shock, Septic/immunology
- Shock, Septic/metabolism
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Affiliation(s)
- Muhamuda Kader
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Mounia Alaoui-EL-Azher
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Jennie Vorhauer
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Bhushan B Kode
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Jakob Z. Wells
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Donna Stolz
- Center for Biologic Imaging, University of Pittsburgh Medical School, Pittsburgh, Pennsylvania, United States of America
| | - George Michalopoulos
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Alan Wells
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Melanie Scott
- Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Nahed Ismail
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Department of Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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35
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Brasil TR, Freire-de-Lima CG, Morrot A, Vetö Arnholdt AC. Host- Toxoplasma gondii Coadaptation Leads to Fine Tuning of the Immune Response. Front Immunol 2017; 8:1080. [PMID: 28955329 PMCID: PMC5601305 DOI: 10.3389/fimmu.2017.01080] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 08/21/2017] [Indexed: 12/22/2022] Open
Abstract
Toxoplasma gondii has successfully developed strategies to evade host's immune response and reach immune privileged sites, which remains in a controlled environment inside quiescent tissue cysts. In this review, we will approach several known mechanisms used by the parasite to modulate mainly the murine immune system at its favor. In what follows, we review recent findings revealing interference of host's cell autonomous immunity and cell signaling, gene expression, apoptosis, and production of microbicide molecules such as nitric oxide and oxygen reactive species during parasite infection. Modulation of host's metalloproteinases of extracellular matrix is also discussed. These immune evasion strategies are determinant to parasite dissemination throughout the host taking advantage of cells from the immune system to reach brain and retina, crossing crucial hosts' barriers.
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Affiliation(s)
- Thaís Rigueti Brasil
- Laboratório de Biologia do Reconhecer, Universidade Estadual do Norte Fluminense, Rio de Janeiro, Brazil
| | | | - Alexandre Morrot
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
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36
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Dual Roles of Two Isoforms of Autophagy-related Gene ATG10 in HCV-Subgenomic replicon Mediated Autophagy Flux and Innate Immunity. Sci Rep 2017; 7:11250. [PMID: 28900156 PMCID: PMC5595887 DOI: 10.1038/s41598-017-11105-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 08/16/2017] [Indexed: 12/25/2022] Open
Abstract
Autophagy and immune response are two defense systems that human-body uses against viral infection. Previous studies documented that some viral mechanisms circumvented host immunity mechanisms and hijacked autophagy for its replication and survival. Here, we focus on interactions between autophagy mechanism and innate-immune-response in HCV-subgenomic replicon cells to find a mechanism linking the two pathways. We report distinct effects of two autophagy-related protein ATG10s on HCV-subgenomic replication. ATG10, a canonical long isoform in autophagy process, can facilitate HCV-subgenomic replicon amplification by promoting autophagosome formation and by combining with and detaining autophagosomes in cellular periphery, causing impaired autophagy flux. ATG10S, a non-canonical short isoform of ATG10 proteins, can activate expression of IL28A/B and immunity genes related to viral ds-RNA including ddx-58, tlr-3, tlr-7, irf-3 and irf-7, and promote autophagolysosome formation by directly combining and driving autophagosomes to perinuclear region where lysosomes gather, leading to lysosomal degradation of HCV-subgenomic replicon in HepG2 cells. ATG10S also can suppress infectious HCV virion replication in Huh7.5 cells. Another finding is that IL28A protein directly conjugates ATG10S and helps autophagosome docking to lysosomes. ATG10S might be a new host factor against HCV replication, and as a target for screening chemicals with new anti-virus mechanisms.
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37
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Antidepressants induce autophagy dependent-NLRP3-inflammasome inhibition in Major depressive disorder. Pharmacol Res 2017; 121:114-121. [DOI: 10.1016/j.phrs.2017.04.028] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 04/02/2017] [Accepted: 04/06/2017] [Indexed: 12/15/2022]
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38
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Jin L, Batra S, Jeyaseelan S. Deletion of Nlrp3 Augments Survival during Polymicrobial Sepsis by Decreasing Autophagy and Enhancing Phagocytosis. THE JOURNAL OF IMMUNOLOGY 2016; 198:1253-1262. [PMID: 28031338 DOI: 10.4049/jimmunol.1601745] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 11/25/2016] [Indexed: 01/07/2023]
Abstract
NLRP3 inflammasome is a critical player in innate immunity. Neutrophil recruitment to tissues and effective neutrophil function are critical innate immune mechanisms for bacterial clearance. However, the role of NLRP3 in neutrophil-dependent bacterial clearance in polymicrobial sepsis is unclear. In this study, we evaluated the role of NLRP3 in polymicrobial sepsis induced by cecal ligation and puncture (CLP). Our results showed protection from death in NLRP3-deficient (Nlrp3-/-) and NLRP3 inhibitor-treated wild-type (C57BL/6) mice. Nlrp3-/- and NLRP3 inhibitor-treated mice displayed lower bacterial load but no impairment in neutrophil recruitment to peritoneum. However, neutrophil depletion abrogated protection from death in Nlrp3-/- mice in response to CLP. Intriguingly, following CLP, Nlrp3-/- peritoneal cells (primarily neutrophils) demonstrate decreased autophagy, augmented phagocytosis, and enhanced scavenger receptor (macrophage receptor with collagenous structure) and mannose-binding leptin expression. These findings enhance our understanding of the critical role of NLRP3 in modulating autophagy and phagocytosis in neutrophils and suggest that therapies should be targeted to modulate autophagy and phagocytosis in neutrophils to control bacterial burden in tissues during CLP-induced polymicrobial sepsis.
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Affiliation(s)
- Liliang Jin
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Experimental Infectious Disease Research, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803; and
| | - Sanjay Batra
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Experimental Infectious Disease Research, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803; and
| | - Samithamby Jeyaseelan
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Experimental Infectious Disease Research, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803; and .,Division of Pulmonary and Critical Care, Department of Medicine, LSU Health Sciences Center, New Orleans, LA 70112
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39
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Chen CY, Yang CH, Tsai YF, Liaw CC, Chang WY, Hwang TL. Ugonin U stimulates NLRP3 inflammasome activation and enhances inflammasome-mediated pathogen clearance. Redox Biol 2016; 11:263-274. [PMID: 28012441 PMCID: PMC5198739 DOI: 10.1016/j.redox.2016.12.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/10/2016] [Accepted: 12/17/2016] [Indexed: 12/12/2022] Open
Abstract
The NOD-like receptor pyrin domain 3 (NLRP3) inflammasome contains Nod-like receptors, a subclass of pattern recognition receptors, suggesting that this complex has a prominent role in host defenses. Various structurally diverse stimulators activate the NLRP3 inflammasome through different signaling pathways. We previously reported that ugonin U (UgU), a natural flavonoid isolated from Helminthostachys zeylanica (L) Hook, directly stimulates phospholipase C (PLC) and triggers superoxide release in human neutrophils. In the present study, we showed that UgU induced NLRP3 inflammasome assembly and subsequent caspase-1 and interleukin (IL)-1β processing in lipopolysaccharide-primed human monocytes. Moreover, UgU elicited mitochondrial superoxide generation in a dose-dependent manner, and a specific scavenger of mitochondrial reactive oxygen species (ROS) diminished UgU-induced IL-1β and caspase-1 activation. UgU induced Ca2+ mobilization, which was inhibited by treatment with inhibitors of PLC or inositol triphosphate receptor (IP3R). Blocking Ca2+ mobilization, PLC, or IP3R diminished UgU-induced IL-1β release, caspase-1 activation, and mitochondrial ROS generation. These data demonstrated that UgU activated the NLPR3 inflammasome activation through Ca2+ mobilization and the production of mitochondrial ROS. We also demonstrated that UgU-dependent NLRP3 inflammasome activation enhanced the bactericidal function of human monocytes. The ability of UgU to stimulate human neutrophils and monocytes, both of which are professional phagocytes, and its capacity to activate the NLRP3 inflammasome, which is a promising molecular target for developing anti-infective medicine, indicate that UgU treatment should be considered as a possible novel therapy for treating infectious diseases. The immuno-stimulatory effects UgU in human monocytes were evaluated. UgU induces Ca2+ mobilization and eventually activates the NLRP3 inflammasome. UgU facilitates the bactericidal function of human monocytes.
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Affiliation(s)
- Chun-Yu Chen
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chuan-Hui Yang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Yung-Fong Tsai
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chih-Chuang Liaw
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - Wen-Yi Chang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Industry of Human Ecology, Research Center for Chinese Herbal Medicine, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan.
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40
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Peckham D, Scambler T, Savic S, McDermott MF. The burgeoning field of innate immune-mediated disease and autoinflammation. J Pathol 2016; 241:123-139. [PMID: 27682255 DOI: 10.1002/path.4812] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 09/13/2016] [Accepted: 09/15/2016] [Indexed: 01/07/2023]
Abstract
Immune-mediated autoinflammatory diseases are occupying an increasingly prominent position among the pantheon of debilitating conditions that afflict humankind. This review focuses on some of the key developments that have occurred since the original description of autoinflammatory disease in 1999, and focuses on underlying mechanisms that trigger autoinflammation. The monogenic autoinflammatory disease range has expanded considerably during that time, and now includes a broad spectrum of disorders, including relatively common conditions such as cystic fibrosis and subsets of systemic lupus erythematosus. The innate immune system also plays a key role in the pathogenesis of complex inflammatory disorders. We have proposed a new nomenclature to accommodate the rapidly increasing number of monogenic disorders, which predispose to either autoinflammation or autoimmunity or, indeed, combinations of both. This new terminology also encompasses a wide spectrum of genetically determined autoinflammatory diseases, with variable clinical manifestations of immunodeficiency and immune dysregulation/autoimmunity. We also explore some of the ramifications of the breakthrough discovery of the physiological role of pyrin and the search for identifiable factors that may serve to trigger attacks of autoinflammation. The evidence that pyrin, as part of the pyrin inflammasome, acts as a sensor of different inactivating bacterial modification Rho GTPases, rather than interacting directly with these microbial products, sets the stage for a better understanding of the role of microorganisms and infections in the autoinflammatory disorders. Finally, we discuss some of the triggers of autoinflammation as well as potential therapeutic interventions aimed at enhancing autophagy and proteasome degradation pathways. Copyright © 2016 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Daniel Peckham
- Leeds Centre for Cystic Fibrosis, St James's University Hospital, Leeds, UK
| | - Thomas Scambler
- National Institute for Health Research-Leeds Musculoskeletal Biomedical Research Unit (NIHR-LMBRU) and Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), Wellcome Trust Brenner Building, St James's University Hospital, Leeds, UK
| | - Sinisa Savic
- National Institute for Health Research-Leeds Musculoskeletal Biomedical Research Unit (NIHR-LMBRU) and Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), Wellcome Trust Brenner Building, St James's University Hospital, Leeds, UK.,Department of Clinical Immunology and Allergy, St James's University Hospital, Leeds, UK
| | - Michael F McDermott
- National Institute for Health Research-Leeds Musculoskeletal Biomedical Research Unit (NIHR-LMBRU) and Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), Wellcome Trust Brenner Building, St James's University Hospital, Leeds, UK
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41
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Gabrion A, Hmitou I, Moshous D, Neven B, Lefèvre-Utile A, Diana JS, Suarez F, Picard C, Blanche S, Fischer A, Cavazzana M, Touzot F. Mammalian target of rapamycin inhibition counterbalances the inflammatory status of immune cells in patients with chronic granulomatous disease. J Allergy Clin Immunol 2016; 139:1641-1649.e6. [PMID: 27702670 DOI: 10.1016/j.jaci.2016.08.033] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 07/13/2016] [Accepted: 08/12/2016] [Indexed: 12/21/2022]
Abstract
BACKGROUND Chronic granulomatous disease (CGD) is a primary immunodeficiency caused by defective production of reactive oxygen species in phagocytic cells that results in life-threatening infections and severe inflammatory manifestations. The treatment of inflammatory manifestations remains challenging because it can be associated with an increased risk of infections. Previous studies have shown that phagocytes from patients with CGD display a defect in autophagy and a reactive oxygen species-independent activation of the inflammasome. OBJECTIVE Because the intersections between autophagy and the inflammasome have been observed in patients with various diseases and microbial infections, we investigated the possible benefit of restoring the autophagy defect through rapamycin, a potent autophagy inducer, in the setting of CGD. METHODS We studied 15 patients given a diagnosis of CGD and followed in our institution. All patients were free of any active infection at the time of the study. RESULTS We show that patients with CGD present a consistent inflammatory phenotype defined by (1) increased nonclassical and intermediate monocytes, (2) a proinflammatory state of mononuclear phagocytes with increased IL-1β and TNF-α content, (3) a TH17 bias of CD4+ T cells, (4) and an increase in IL-17A-secreting neutrophil numbers. We document the reversion of CGD inflammatory status by the mammalian target of rapamycin inhibitor rapamycin on the different immune cell subsets. We also provide evidence for the enhancement of rapamycin's inhibitory effect on IL-1β secretion by the IL-1 receptor antagonist anakinra in phagocytes of patients with CGD. CONCLUSION Altogether, these data open new therapeutic approaches for CGD-related inflammatory manifestations.
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Affiliation(s)
- Aurélie Gabrion
- Biotherapy Department, Necker-Enfants Malades Hospital, Assistance Publique-Hôpitaux de Paris, AP-HP, Paris, France
| | - Isabelle Hmitou
- Biotherapy Department, Necker-Enfants Malades Hospital, Assistance Publique-Hôpitaux de Paris, AP-HP, Paris, France
| | - Despina Moshous
- Department of Pediatric Immunology, Hematology and Rheumatology, Necker-Enfants Malades Hospital, AP-HP, Paris, France; University Paris Descartes Sorbonne Paris Cité, Institut Imagine, Paris, France; Inserm UMR 1163, Paris, France
| | - Bénédicte Neven
- Department of Pediatric Immunology, Hematology and Rheumatology, Necker-Enfants Malades Hospital, AP-HP, Paris, France; University Paris Descartes Sorbonne Paris Cité, Institut Imagine, Paris, France; Inserm UMR 1163, Paris, France
| | - Alain Lefèvre-Utile
- Department of Pediatric Immunology, Hematology and Rheumatology, Necker-Enfants Malades Hospital, AP-HP, Paris, France
| | - Jean-Sébastien Diana
- Department of Pediatric Immunology, Hematology and Rheumatology, Necker-Enfants Malades Hospital, AP-HP, Paris, France
| | - Félipe Suarez
- University Paris Descartes Sorbonne Paris Cité, Institut Imagine, Paris, France; Inserm UMR 1163, Paris, France; Department of Hematology, Necker-Enfants Malades Hospital, AP-HP, Paris, France
| | - Capucine Picard
- University Paris Descartes Sorbonne Paris Cité, Institut Imagine, Paris, France; Inserm UMR 1163, Paris, France; Centre d'Etude des Déficits Immunitaires, Necker-Enfants Malades Hospital, AP-HP, Paris, France
| | - Stéphane Blanche
- Department of Pediatric Immunology, Hematology and Rheumatology, Necker-Enfants Malades Hospital, AP-HP, Paris, France; University Paris Descartes Sorbonne Paris Cité, Institut Imagine, Paris, France
| | - Alain Fischer
- Department of Pediatric Immunology, Hematology and Rheumatology, Necker-Enfants Malades Hospital, AP-HP, Paris, France; University Paris Descartes Sorbonne Paris Cité, Institut Imagine, Paris, France; Inserm UMR 1163, Paris, France; Collège de France, Paris, France
| | - Marina Cavazzana
- Biotherapy Department, Necker-Enfants Malades Hospital, Assistance Publique-Hôpitaux de Paris, AP-HP, Paris, France; University Paris Descartes Sorbonne Paris Cité, Institut Imagine, Paris, France; Inserm UMR 1163, Paris, France
| | - Fabien Touzot
- Biotherapy Department, Necker-Enfants Malades Hospital, Assistance Publique-Hôpitaux de Paris, AP-HP, Paris, France; University Paris Descartes Sorbonne Paris Cité, Institut Imagine, Paris, France; Inserm UMR 1163, Paris, France.
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Le Texier L, Lineburg KE, Cao B, McDonald-Hyman C, Leveque-El Mouttie L, Nicholls J, Melino M, Nalkurthi BC, Alexander KA, Teal B, Blake SJ, Souza-Fonseca-Guimaraes F, Engwerda CR, Kuns RD, Lane SW, Teng M, Teh C, Gray D, Clouston AD, Nilsson SK, Blazar BR, Hill GR, MacDonald KP. Autophagy-dependent regulatory T cells are critical for the control of graft-versus-host disease. JCI Insight 2016; 1:e86850. [PMID: 27699243 DOI: 10.1172/jci.insight.86850] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Regulatory T cells (Tregs) play a crucial role in the maintenance of peripheral tolerance. Quantitative and/or qualitative defects in Tregs result in diseases such as autoimmunity, allergy, malignancy, and graft-versus-host disease (GVHD), a serious complication of allogeneic stem cell transplantation (SCT). We recently reported increased expression of autophagy-related genes (Atg) in association with enhanced survival of Tregs after SCT. Autophagy is a self-degradative process for cytosolic components that promotes cell homeostasis and survival. Here, we demonstrate that the disruption of autophagy within FoxP3+ Tregs (B6.Atg7fl/fl-FoxP3cre+ ) resulted in a profound loss of Tregs, particularly within the bone marrow (BM). This resulted in dysregulated effector T cell activation and expansion, and the development of enterocolitis and scleroderma in aged mice. We show that the BM compartment is highly enriched in TIGIT+ Tregs and that this subset is differentially depleted in the absence of autophagy. Moreover, following allogeneic SCT, recipients of grafts from B6.Atg7fl/fl-FoxP3cre+ donors exhibited reduced Treg reconstitution, exacerbated GVHD, and reduced survival compared with recipients of B6.WT-FoxP3cre+ grafts. Collectively, these data indicate that autophagy-dependent Tregs are critical for the maintenance of tolerance after SCT and that the promotion of autophagy represents an attractive immune-restorative therapeutic strategy after allogeneic SCT.
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Affiliation(s)
- Laëtitia Le Texier
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Katie E Lineburg
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Benjamin Cao
- Manufacturing, Commonwealth Scientific and Industrial Research Organization (CSIRO), Melbourne, Victoria, Australia.,Australian Regenerative Medicine Institute, Monash University, Melbourne, Victoria, Australia
| | - Cameron McDonald-Hyman
- Pediatric Blood and Marrow Transplantation Program, University of Minnesota, Minneapolis, Minnesota, USA
| | - Lucie Leveque-El Mouttie
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Jemma Nicholls
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Michelle Melino
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Blessy C Nalkurthi
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Kylie A Alexander
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Bianca Teal
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Stephen J Blake
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | | | - Christian R Engwerda
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Rachel D Kuns
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Steven W Lane
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia.,Department of Bone Marrow Transplantation, Royal Brisbane Hospital, Brisbane, Queensland, Australia
| | - Michele Teng
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Charis Teh
- Molecular Genetics of Cancer Division and Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
| | - Daniel Gray
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia.,Molecular Genetics of Cancer Division and Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
| | | | - Susan K Nilsson
- Manufacturing, Commonwealth Scientific and Industrial Research Organization (CSIRO), Melbourne, Victoria, Australia.,Australian Regenerative Medicine Institute, Monash University, Melbourne, Victoria, Australia
| | - Bruce R Blazar
- Pediatric Blood and Marrow Transplantation Program, University of Minnesota, Minneapolis, Minnesota, USA
| | - Geoffrey R Hill
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia.,Department of Bone Marrow Transplantation, Royal Brisbane Hospital, Brisbane, Queensland, Australia
| | - Kelli Pa MacDonald
- Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
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de Andrade Ramos BR, Witkin SS. The influence of oxidative stress and autophagy cross regulation on pregnancy outcome. Cell Stress Chaperones 2016; 21:755-62. [PMID: 27383757 PMCID: PMC5003807 DOI: 10.1007/s12192-016-0715-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/15/2016] [Accepted: 06/21/2016] [Indexed: 12/28/2022] Open
Abstract
The generation of reactive oxygen species (ROS), a byproduct of aerobic energy metabolism, is maintained at physiological levels by the activity of antioxidant components. Insufficiently opposed ROS results in oxidative stress characterized by altered mitochondrial function, decreased protein activity, damage to nucleic acids, and induction of apoptosis. Elevated levels of inadequately opposed ROS induce autophagy, a major intracellular pathway that sequesters and removes damaged macromolecules and organelles. In early pregnancy, autophagy induction preserves trophoblast function in the low oxygen and nutrient placental environment. Inadequate regulation of the ROS-autophagy axis leads to abnormal autophagy activity and contributes to the development of preeclampsia and intrauterine growth restriction. ROS-autophagy interactions are altered at the end of gestation and participate in the initiation of parturition at term. The induction of high levels of ROS coupled with a failure to induce a corresponding increase in autophagy results in the triggering of preterm labor and delivery.
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Affiliation(s)
- Bruna Ribeiro de Andrade Ramos
- Department of Pathology, Botucatu Medical School, São Paulo State University-UNESP, Distrito de Rubião Júnior, 18618-970, Botucatu, São Paulo, Brazil.
- Division of Immunology and Infectious Diseases, Department of Obstetrics and Gynecology, Weill Cornell Medicine, New York, NY, USA.
| | - Steven S Witkin
- Department of Pathology, Botucatu Medical School, São Paulo State University-UNESP, Distrito de Rubião Júnior, 18618-970, Botucatu, São Paulo, Brazil
- Division of Immunology and Infectious Diseases, Department of Obstetrics and Gynecology, Weill Cornell Medicine, New York, NY, USA
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Immune tolerance to an intestine-adapted bacteria, Chryseobacterium sp., injected into the hemocoel of Protaetia brevitarsis seulensis. Sci Rep 2016; 6:31722. [PMID: 27530146 PMCID: PMC4987663 DOI: 10.1038/srep31722] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 07/22/2016] [Indexed: 11/11/2022] Open
Abstract
To explore the interaction of gut microbes and the host immune system, bacteria were isolated from the gut of Protaetia brevitarsis seulensis larvae. Chryseobacterium sp., Bacillus subtilis, Arthrobacter arilaitensis, Bacillus amyloliquefaciens, Bacillus megaterium, and Lysinibacillus xylanilyticus were cultured in vitro, identified, and injected in the hemocoel of P. brevitarsis seulensis larvae, respectively. There were no significant changes in phagocytosis-associated lysosomal formation or pathogen-related autophagosome in immune cells (granulocytes) from Chryseobacterium sp.-challenged larvae. Next, we examined changes in the transcription of innate immune genes such as peptidoglycan recognition proteins and antimicrobial peptides following infection with Chryseobacterium sp. PGRP-1 and -2 transcripts, which may be associated with melanization generated by prophenoloxidase (PPO), were either highly or moderately expressed at 24 h post-infection with Chryseobacterium sp. However, PGRP-SC2 transcripts, which code for bactericidal amidases, were expressed at low levels. With respect to antimicrobial peptides, only coleoptericin was moderately expressed in Chryseobacterium sp.-challenged larvae, suggesting maintenance of an optimum number of Chryseobacterium sp. All examined genes were expressed at significantly higher levels in larvae challenged with a pathogenic bacterium. Our data demonstrated that gut-inhabiting bacteria, the Chryseobacterium sp., induced a weaker immune response than other pathogenic bacteria, E. coli K12.
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Simonaro CM. Lysosomes, Lysosomal Storage Diseases, and Inflammation. JOURNAL OF INBORN ERRORS OF METABOLISM AND SCREENING 2016. [DOI: 10.1177/2326409816650465] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- Calogera M. Simonaro
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY USA
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Khalil H, Tazi M, Caution K, Ahmed A, Kanneganti A, Assani K, Kopp B, Marsh C, Dakhlallah D, Amer AO. Aging is associated with hypermethylation of autophagy genes in macrophages. Epigenetics 2016; 11:381-8. [PMID: 26909551 DOI: 10.1080/15592294.2016.1144007] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Autophagy is a biological process characterized by self-digestion and involves induction of autophagosome formation, leading to degradation of autophagic cargo. Aging is associated with the reduction of autophagy activity leading to neurodegenerative disorders, chronic inflammation, and susceptibility to infection; however, the underlying mechanism is unclear. DNA methylation by DNA methyltransferases reduces the expression of corresponding genes. Since macrophages are major players in inflammation and defense against infection we determined the differences in methylation of autophagy genes in macrophages derived from young and aged mice. We found that promoter regions of Atg5 and LC3B are hypermethylated in macrophages from aged mice and this is accompanied by low gene expression. Treatment of aged mice and their derived macrophages with methyltransferase inhibitor (2)-epigallocatechin-3-gallate (EGCG) or specific DNA methyltransferase 2 (DNMT2) siRNA restored the expression of Atg5 and LC3 in vivo and in vitro. Our study builds a foundation for the development of novel therapeutics aimed to improve autophagy in the elderly population and suggests a role for DNMT2 in DNA methylation activities.
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Affiliation(s)
- Hany Khalil
- a Department of Molecular Biology , Genetic Engineering and Biotechnology Research Institute, University of Sadat City , Sadat City , Egypt
| | - Mia Tazi
- b Department of Microbial Infection and Immunity , Center for Microbial Interface Biology, The Ohio State University , Columbus , OH.,c The Davis Heart and Lung Research Institute, The Ohio State University , Columbus , OH
| | - Kyle Caution
- b Department of Microbial Infection and Immunity , Center for Microbial Interface Biology, The Ohio State University , Columbus , OH.,c The Davis Heart and Lung Research Institute, The Ohio State University , Columbus , OH
| | - Amr Ahmed
- b Department of Microbial Infection and Immunity , Center for Microbial Interface Biology, The Ohio State University , Columbus , OH.,c The Davis Heart and Lung Research Institute, The Ohio State University , Columbus , OH
| | - Apurva Kanneganti
- b Department of Microbial Infection and Immunity , Center for Microbial Interface Biology, The Ohio State University , Columbus , OH.,c The Davis Heart and Lung Research Institute, The Ohio State University , Columbus , OH
| | - Kaivon Assani
- d The Research Institute at Nationwide Children's Hospital, The Ohio State University , Columbus , OH
| | - Benjamin Kopp
- d The Research Institute at Nationwide Children's Hospital, The Ohio State University , Columbus , OH
| | - Clay Marsh
- c The Davis Heart and Lung Research Institute, The Ohio State University , Columbus , OH
| | - Duaa Dakhlallah
- c The Davis Heart and Lung Research Institute, The Ohio State University , Columbus , OH
| | - Amal O Amer
- b Department of Microbial Infection and Immunity , Center for Microbial Interface Biology, The Ohio State University , Columbus , OH.,c The Davis Heart and Lung Research Institute, The Ohio State University , Columbus , OH
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