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Feng S, Zhao J, Yang T, Li L. TMPRSS11D/ALR-mediated ER stress regulates the function of myeloid-derived suppressor cells in the cervical cancer microenvironment. Int Immunopharmacol 2023; 124:110869. [PMID: 37666068 DOI: 10.1016/j.intimp.2023.110869] [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: 02/12/2023] [Revised: 08/08/2023] [Accepted: 08/27/2023] [Indexed: 09/06/2023]
Abstract
Myeloid-derived suppressor cells (MDSCs) contribute to tumor immune evasion, and have been identified as immunosuppressive cells in cervical cancer. The effect of TMPRSS11D (transmembrane serine protease 11D) in some cancers has been reported, but its role in immune escape of cervical cancer is still unclear. This study aims to elucidate the regulatory mechanism of TMPRSS11D on the immunosuppressive function of MDSCs in cervical cancer. Our data showed that the proportion of polymorphonucleoid MDSCs (PMN-MDSCs), the contents of immunosuppressive factors (including INOS, IDO, and ARG-1) secreted by MDSCs, and TMPRSS11D mRNA level in peripheral blood mononuclear cells (PBMCs) of malignant cervical cancer patients was significantly higher than that of benign tumor patients. Next, CD3+ T cells from PBMCs of cervical cancer patients were stimulated with anti-CD3 and anti-CD28, and then co-cultured with PMN-MDSCs from the same donors at a ratio of 1:2 for 3 days. PMN-MDSCs from malignant tumors produced more ROS, while TMPRSS11D knockdown blocked ROS production. PMN-MDSCs inhibited T cell proliferation and IFN-γ production, while silencing TMPRSS11D in PMN-MDSCs hindered the immunosuppressive effect of PMN-MDSCs. Mechanistically, TMPRSS11D bound to ALR (Augmenter of liver regeneration) and negatively regulated ALR expression, inducing ER stress in PMN-MDSCs, thereby enhancing the immunosuppressive effect of PMN-MDSCs on T cells. Additionally, mouse xenograft tumor assay was conducted to assess the role of TMPRSS11D in tumor growth and MDSC accumulation in vivo. Silencing TMPRSS11D impeded the growth of cervical cancer xenografts and reduced the accumulation of MDSCs in tumor tissues. In conclusion, TMPRSS11D induced ER stress in MDSCs through negative regulation of ALR, thus enhancing the immunosuppressive effect of MDSCs on T cells, so as to promote the growth of cervical cancer tumors.
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Affiliation(s)
- Sifang Feng
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Juan Zhao
- Obstetrics and Gynecology Department, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Ting Yang
- Obstetrics and Gynecology Department, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Long Li
- Obstetrics and Gynecology Department, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China.
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Kavak N, Guler I, Akcan G, Surel AA, Gungorer B, Abatay K, Abatay MP, Balci N, Kavak RP, Doger C. Role of augmenter of liver regeneration on testicular ischemia and ischemia/reperfusion injury: An experimental study. Niger J Clin Pract 2023; 26:963-972. [PMID: 37635581 DOI: 10.4103/njcp.njcp_700_22] [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] [Indexed: 08/29/2023]
Abstract
Background Testicular torsion causes ischemic injury, and torsion causes reperfusion injury. Aim Evaluating the role of augmenter of liver regeneration (ALR) in testicular ischemia and ischemia/reperfusion injury. Materials and Method(s) Seventy-eight (78) healthy Wistar albino male rats were randomly divided into four groups; control (C) (n = 6), sham (S) (n = 24), torsion (T) (n = 24), and torsion/detorsion (T/D) (n = 24). S, T, and T/D groups were divided into four subgroups (n = 6) as 1st, 2nd, 3rd, and 4th hours. Blood, tissue ALR, and histology analyses were performed between groups and subgroups. Results The increase in plasma ALR values at the 3rd and 4th hours compared to the 1st hour in the T group were significant (P < 0.01, P < 0.001, respectively). In the T/D group, a significant increase was observed in plasma ALR values at the 3rd and 4th hours compared to the 1st hour (P < 0.05, P < 0.001, respectively). Plasma ALR values at the 1st, 2nd, 3rd, and 4th hours were higher in the T and T/D groups than in the C group (P < 0.001, P < 0.05, respectively). Plasma ALR values were higher in the T group at the 1st, 2nd, 3rd, and 4th hours than in the S group (P < 0.05). A significant increase was observed in tissue ALR at the 3rd and 4th hours than at the 1st hour in the T group (P < 0.05, P < 0.001, respectively). A significant increase was observed in tissue ALR at the 3rd and 4th hours than in the 1st hour in the T/D group (P < 0.05, P < 0.001, respectively). Discussion ALR in plasma and testicular tissue has a potential role in the early diagnosis of testicular torsion and in predicting the prognosis of T and T/D.
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Affiliation(s)
- N Kavak
- Department of Emergency Medicine, University of Health Sciences, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Türkiye
| | - I Guler
- Department of General Surgery, The Republic of Türkiye, Ministry of Health, General Directorate of Public Hospitals, Ankara, Türkiye
| | - G Akcan
- Department of Histology and Embryology, Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara, Türkiye
| | - A A Surel
- Department of General Surgery, Coordinator Head Physician of Turkish Ministry of Health, Ankara City Hospital, Ankara, Türkiye
| | - B Gungorer
- Department of Emergency Medicine, Ankara City Hospital, Ankara, Türkiye
| | - K Abatay
- Muş State Hospital, Emergency Medicine, Muş, Türkiye
| | - M P Abatay
- Hasköy Familiy Heath Center, Muş, Türkiye
| | - N Balci
- Ministry of Health, Department of Services, Home Health Services Unit, Speciality of Family Medicine, Ankara, Türkiye
| | - R P Kavak
- Department of Radiology, Etlik, City Hospital, Ankara, Türkiye
| | - C Doger
- Department of, Anesthesiology and Reanimation, Ankara City Hospital, Ankara, Türkiye
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Polimeno L, Viggiani MT, Giorgio F, Polimeno L, Fratantonio D, Di Domenico M, Boccellino M, Ballini A, Topi S, Di Leo A, Santacroce L, Barone M. Possible role of nuclear factor erythroid 2-related factor 2 in the progression of human colon precancerous lesions. Dig Liver Dis 2022; 54:1716-1720. [PMID: 35210176 DOI: 10.1016/j.dld.2022.01.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND Increased levels of oxidative stress/cell inflammation contribute to colorectal cancer (CRC) onset. Nuclear factor-erythroid 2-related factor 2 (Nrf2) and its controlled growth factor erv1-like (Gfer) gene regulate redox-sensitive and anti-inflammatory mechanisms, respectively, which can contribute to promoting cancer development. AIM We evaluated Nrf2 and Gfer RNA expression and Nrf2 protein expression in colon mucosa in order to establish their possible involvement in the early stage of CRC. METHODS Forty subjects were enrolled after a histological evaluation of their colon biopsies. They included 20 subjects with a sporadic colorectal adenoma (SpCA group) and 20 without precancerous lesions (controls). Biopsy samples were processed for gene expression analysis and protein expression, using Real-time PCR and immunofluorescence confocal microscopy, respectively. RESULTS Nrf2 and Gfer mRNA expression were significantly reduced (p=0.007 and p<0.003, respectively) in SpCA tissues compared to normal mucosa from controls. Furthermore, immunofluorescence analysis confirmed a relevant reduction of Nrf2 in SpCA tissue compared to normal tissue from controls. CONCLUSIONS Our data confirm the hypothesis that Nrf2 and Gfer expression may be involved in the initial hits contributing to the multistep process of colon carcinogenesis. Further larger studies are needed to confirm if Nrf2 and Gfer are potential risk/prognostic factors for cancer development.
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Affiliation(s)
- Lorenzo Polimeno
- Polypheno Academic Spin Off, University of Bari "A. Moro", Policlinico, Piazza G. Cesare 11, 70124 Bari, Italy
| | - Maria Teresa Viggiani
- Gastroenterology Unit, Department of Emergency and Organ Transplantation (DETO), University of Bari "A. Moro", Policlinico, Piazza G. Cesare 11, 70124 Bari, Italy
| | - Floriana Giorgio
- Gastroenterology Unit, Department of Emergency and Organ Transplantation (DETO), University of Bari "A. Moro", Policlinico, Piazza G. Cesare 11, 70124 Bari, Italy
| | - Lucrezia Polimeno
- Polypheno Academic Spin Off, University of Bari "A. Moro", Policlinico, Piazza G. Cesare 11, 70124 Bari, Italy
| | - Deborah Fratantonio
- Department of Biosciences, Biotechnologies and Biopharmaceutics, Campus Universitario "G. Quagliarello", University of Bari "A. Moro", 70125 Bari, Italy
| | - Marina Di Domenico
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy
| | - Mariarosaria Boccellino
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy
| | - Andrea Ballini
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy; School of Medicine, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Skender Topi
- Department of Clinical Disciplines, School of Technical Medical Sciences, University of Elbasan "A. Xhuvani", Rruga Ismail Zyma, 3001 Elbasan, Albania
| | - Alfredo Di Leo
- Gastroenterology Unit, Department of Emergency and Organ Transplantation (DETO), University of Bari "A. Moro", Policlinico, Piazza G. Cesare 11, 70124 Bari, Italy
| | - Luigi Santacroce
- Polypheno Academic Spin Off, University of Bari "A. Moro", Policlinico, Piazza G. Cesare 11, 70124 Bari, Italy; Department of Clinical Disciplines, School of Technical Medical Sciences, University of Elbasan "A. Xhuvani", Rruga Ismail Zyma, 3001 Elbasan, Albania; Department of Interdisciplinary Medicine, Microbiology and Virology Unit, Policlinico University Hospital of Bari, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Michele Barone
- Gastroenterology Unit, Department of Emergency and Organ Transplantation (DETO), University of Bari "A. Moro", Policlinico, Piazza G. Cesare 11, 70124 Bari, Italy.
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Pan Y, Wang X, Liu X, Shen L, Chen Q, Shu Q. Targeting Ferroptosis as a Promising Therapeutic Strategy for Ischemia-Reperfusion Injury. Antioxidants (Basel) 2022; 11:2196. [PMID: 36358568 PMCID: PMC9686892 DOI: 10.3390/antiox11112196] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/29/2022] [Accepted: 11/03/2022] [Indexed: 07/29/2023] Open
Abstract
Ischemia-reperfusion (I/R) injury is a major challenge in perioperative medicine that contributes to pathological damage in various conditions, including ischemic stroke, myocardial infarction, acute lung injury, liver transplantation, acute kidney injury and hemorrhagic shock. I/R damage is often irreversible, and current treatments for I/R injury are limited. Ferroptosis, a type of regulated cell death characterized by the iron-dependent accumulation of lipid hydroperoxides, has been implicated in multiple diseases, including I/R injury. Emerging evidence suggests that ferroptosis can serve as a therapeutic target to alleviate I/R injury, and pharmacological strategies targeting ferroptosis have been developed in I/R models. Here, we systematically summarize recent advances in research on ferroptosis in I/R injury and provide a comprehensive analysis of ferroptosis-regulated genes investigated in the context of I/R, as well as the therapeutic applications of ferroptosis regulators, to provide insights into developing therapeutic strategies for this devastating disease.
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Affiliation(s)
- Yihang Pan
- Department of Clinical Research Center, The Children’s Hospital, School of Medicine, Zhejiang University, National Clinical Research Center for Child Health, Hangzhou 310052, China
| | - Xueke Wang
- Department of Clinical Research Center, The Children’s Hospital, School of Medicine, Zhejiang University, National Clinical Research Center for Child Health, Hangzhou 310052, China
| | - Xiwang Liu
- Department of Thoracic & Cardiovascular Surgery, The Children’s Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Lihua Shen
- Department of Clinical Research Center, The Children’s Hospital, School of Medicine, Zhejiang University, National Clinical Research Center for Child Health, Hangzhou 310052, China
| | - Qixing Chen
- Department of Clinical Research Center, The Children’s Hospital, School of Medicine, Zhejiang University, National Clinical Research Center for Child Health, Hangzhou 310052, China
- Key Laboratory of Diagnosis and Treatment of Neonatal Diseases of Zhejiang Province, Hangzhou 310052, China
| | - Qiang Shu
- Department of Clinical Research Center, The Children’s Hospital, School of Medicine, Zhejiang University, National Clinical Research Center for Child Health, Hangzhou 310052, China
- Department of Thoracic & Cardiovascular Surgery, The Children’s Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
- Key Laboratory of Diagnosis and Treatment of Neonatal Diseases of Zhejiang Province, Hangzhou 310052, China
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Goyal S, Tiwari S, Seth B, Phoolmala, Tandon A, Kumar Chaturvedi R. Bisphenol-A Mediated Impaired DRP1-GFER Axis and Cognition Restored by PGC-1α Upregulation Through Nicotinamide in the Rat Brain Hippocampus. Mol Neurobiol 2022; 59:4761-4775. [PMID: 35612786 DOI: 10.1007/s12035-022-02862-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 04/28/2022] [Indexed: 10/18/2022]
Abstract
The regulatory network of mitochondrial biogenesis and dynamics is vital for mitochondrial functions and cellular homeostasis. Any impairment in the mitochondrial network leads to neurodegenerative disorders. Our earlier studies suggest that environmental toxicant Bisphenol-A (BPA) exposure reduces neurogenesis by abnormal mitochondrial dynamics and mitochondrial biogenesis through impairment of mitochondrial fission factor dynamin-related protein (DRP1) and mitochondrial import protein GFER, which leads to demyelination, neurodegeneration, and cognitive deficits in the rats. In the present study, we found that chronic BPA exposure reduces PGC-1α levels (master regulator of mitochondrial biogenesis), alters mitochondrial localization of DRP1 and GFER, and reduces the number of PGC-1α/NeuN+ and PGC-1α/β-tubulin+ neurons in the rat hippocampus, suggesting reduced PGC-1α-mediated neurogenesis. Nicotinamide significantly increased PGC-1α protein levels, PGC-1α/NeuN+ co-labeled cells in BPA-treated rat hippocampus and PGC-1α/β-tubulin+ co-labeled cells in neuron culture derived from hippocampal neural stem cells. Interestingly, PGC-1α upregulation by nicotinamide also resulted in increased GFER levels and restored mitochondrial localization of GFER (increased GFER/TOMM20 co-labeled cells) in vitro and in vivo following BPA treatment. Nicotinamide also reduced DRP1 levels and prevented DRP1 mitochondrial localization in BPA-treated neuronal cultures and hippocampus, suggesting reduced mitochondrial fission. This resulted in reduced cytochrome c levels in neuronal culture and reduced hippocampal neurodegeneration (reduced caspase-3/NeuN+ co-labeled neurons) following nicotinamide treatment in BPA-treated group. Consequently, activation of PGC-1α by nicotinamide restored BPA-mediated cognitive deficits in rats. Results suggest that the treatment of nicotinamide has therapeutic potential and rescues BPA-mediated neuronal death and cognitive deficits by upregulating the PGC-1α and GFER-DRP1 link, thus balancing mitochondrial homeostasis.
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Affiliation(s)
- Shweta Goyal
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Saurabh Tiwari
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Brashket Seth
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Phoolmala
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ankit Tandon
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
- Department of Biochemistry, School of Dental Sciences, Babu Banarasi Das University, BBD City, Faizabad Road, Lucknow, 226 028, U.P, India
| | - Rajnish Kumar Chaturvedi
- Molecular Neurotoxicology and Cell Integrity Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Klyosova EY, Shkurat EA, Azarova YE, Polonikov AV. Polymorphism rs1046495 of the GFER Gene as a New Genetic Marker of Preposition to Type 2 Diabetes Mellitus. Bull Exp Biol Med 2022; 172:587-591. [PMID: 35352250 DOI: 10.1007/s10517-022-05441-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 10/18/2022]
Abstract
The study involving 2830 subjects (1444 patients with type 2 diabetes mellitus and 1386 healthy controls) an association of the rs1046495 polymorphism of the GFER gene encoding FADdependent sulfhydryl oxidase with low risk of the disease in non-obese patients (OR=0.76, 95%CI 0.57-0.99, p=0.029). The protective effect of the polymorphic gene variant remained significant in individuals who consumed fresh vegetables and fruits (p=0.014), proteins (p=0.0017), and did not consume carbohydrate- and fat-reach food (p=0.0047). The association of the minor allele rs1046495-C with type 2 diabetes mellitus can be explained by its more pronounced effect on the expression of the GFER enzyme that through glutathionation maintains the ROS level for optimal functioning of complexes III and IV of the electron transport chain and promotes the formation of disulfide bonds in the CHCHD4 chaperone molecule. Impaired activity of this molecule underlies mitochondrial dysfunction, one of the key pathological changes in patients with type 2 diabetes mellitus.
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Affiliation(s)
- E Yu Klyosova
- Research Institute of Genetic and Molecular Epidemiology, Kursk State Medical University, Ministry of the Health of the Russian Federation, Kursk, Russia.
| | - E A Shkurat
- Research Institute of Genetic and Molecular Epidemiology, Kursk State Medical University, Ministry of the Health of the Russian Federation, Kursk, Russia
| | - Yu E Azarova
- Research Institute of Genetic and Molecular Epidemiology, Kursk State Medical University, Ministry of the Health of the Russian Federation, Kursk, Russia
| | - A V Polonikov
- Research Institute of Genetic and Molecular Epidemiology, Kursk State Medical University, Ministry of the Health of the Russian Federation, Kursk, Russia
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Liao YJ, Ma YX, Huang LL, Zhang Z, Tan FY, Deng LL, Cao D, Zeng XJ, Yu GQ, Liao XH. Augmenter of liver regeneration protects the kidney against ischemia-reperfusion injury by inhibiting necroptosis. Bioengineered 2022; 13:5152-5167. [PMID: 35164651 PMCID: PMC8974178 DOI: 10.1080/21655979.2022.2037248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Necroptosis plays an important role in the pathogenesis of acute kidney injury (AKI), and necroptosis-related interventions may therefore be an important measure for the treatment of AKI. Our previous study has shown that augmenter of liver regeneration (ALR) inhibits renal tubular epithelial cell apoptosis and regulates autophagy; however, the influence of ALR on necroptosis remains unclear. In this study, we investigated the effect of ALR on necroptosis caused by ischemia-reperfusion and the underlying mechanism. In vivo experiments indicated that kidney-specific knockout of ALR aggravated the renal dysfunction and pathological damage induced by ischemia-reperfusion. Simultaneously, the expression of renal necroptosis-associated protein receptor-interacting protein 1 (RIP1), receptor-interacting protein 3 (RIP3), and mixed-lineage kinase domain-like protein (MLKL) significantly increased. In vitro experiments indicated that overexpression of ALR decreased the expression of hypoxia-reoxygenation-induced kidney injury molecules, the inflammation-associated factor tumor necrosis factor-alpha (TNF-α), and monocyte chemotactic protein. Additionally, the expression of RIP1, RIP3, and MLKL, which are elevated after hypoxia and reoxygenation, was also inhibited by ALR overexpression. Both in vivo and in vitro results indicated that ALR has a protective effect against acute kidney injury caused by ischemia-reperfusion, and the RIP1/RIP3/MLKL pathway should be further verified as a probable necroptosis regulating mechanism.
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Affiliation(s)
- Yue-Juan Liao
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Yi-Xin Ma
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Li-Li Huang
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Zheng Zhang
- Department of Cell Biology and Genetics, Chongqing Medical University, Chongqing, China
| | - Fang-Yan Tan
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Li-Li Deng
- Department of Nephrology, Chongqing Sanbo Changan Hospital, Chongqing, China
| | - Dan Cao
- Department of Nephrology, The Fifth Hospital of Chongqing, Chongqing, China
| | - Xu-Jia Zeng
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Gui-Quan Yu
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Xiao-Hui Liao
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
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Anisakis Allergy: Is Aquacultured Fish a Safe and Alternative Food to Wild-Capture Fisheries for Anisakis simplex-Sensitized Patients? BIOLOGY 2021; 10:biology10020106. [PMID: 33540832 PMCID: PMC7913066 DOI: 10.3390/biology10020106] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/30/2021] [Accepted: 01/30/2021] [Indexed: 12/03/2022]
Abstract
Simple Summary The diagnosis of Anisakiasis is documented by the occasional finding of L3 larvae in the infected gastro-intestinal tract. Currently, about 14 allergens have been described, among which Ani s1 and Ani s4, both highly heat-resistant, appear central in Anisakiasis anaphylaxis and necessary to cause allergic reactions. Food has to be considered Anisakis-free only when heat-resistant Anisakis allergens are not present. Abstract Background: Anisakis simplex (A. simplex) infection, in humans, causes a series of clinical manifestations affecting the gastro-intestinal tract known as Anisakiasis/Anisakidosis. Patients may also present allergic manifestations such as hives and/or angioedema and even anaphylactic shock. The aim of this study was to investigate whether aquacultured fish could be considered A.simplex-free food and constitute a safe, alternative, wild-capture fish food for Gastro-Allergic Anisakiasis (GAA)-sensitized subjects. Methods: Protein extracts from A. simplex larvae in the third stage (L3) and from edible part of heavily infected horse mackerel (Trachurus trachurus) and aquacultured sea bream, have been tested for A. simplex allergens presence by immunological analysis. Western blot analysis using, as source of specific Anisakis allergens antibodies, serum samples from subjects referring allergic symptoms after raw fish ingestion, was performed. These subjects showed high levels of specific IgE anti A.simplex allergens determined by clinical laboratory tests (ISAC test). Results: Our data demonstrate the presence of Ani s4 allergen in both infected and aquacultured fish extracts, providing a possible interpretation for the allergic manifestations reported by subjects, already sensitized to A. simplex, who ate frozen or well-cooked or, even, aquacultured fish. Conclusions: The present data stimulate more accurate prophylaxis suggestions for Anisakis allergy and more specific controls of fishmeal used in aquaculture.
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Huang W, Sun H, Hu T, Zhu D, Long X, Guo H, Liu Q. Blocking the short isoform of augmenter of liver regeneration inhibits proliferation of human multiple myeloma U266 cells via the MAPK/STAT3/cell cycle signaling pathway. Oncol Lett 2021; 21:197. [PMID: 33574936 PMCID: PMC7816290 DOI: 10.3892/ol.2021.12458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 11/20/2020] [Indexed: 11/16/2022] Open
Abstract
Multiple myeloma (MM) is the second most common haematological malignancy and remains an incurable disease, with most patients relapsing and requiring further treatment. Augmenter of liver regeneration (ALR) is a vital protein affecting fundamental processes such as energy transduction, cell survival and regeneration. Silencing ALR inhibits cell proliferation and triggers apoptosis in human MM U266 cells. However, little is known about the role of 15-kDa-ALR on MM. In the present study, the role of 15-kDa-ALR in human MM cells was investigated. Blocking extracellular 15-kDa-ALR with an anti-ALR monoclonal antibody (McAb) decreased the proliferation and viability of U266 cells. However, the results of flow cytometry revealed no changes in apoptosis, and the expression levels of Bax, Bcl-2, caspase-3 and cleaved caspase-3 were not affected. However, combined treatment with anti-ALR McAb and epirubicin increased the apoptosis of U266 cells. RNA sequencing results indicated that the ERK1/2, JNK-MAPK and STAT3 signaling pathways, as well as the cell cycle, were associated with the mechanism of action of the anti-ALR McAb, and PCR, western blotting and cell cycle analysis confirmed these results. The present findings suggested that blocking extracellular 15-kDa-ALR in U266 cells with an anti-ALR McAb decreased cell proliferation via the MAPK, STAT3 and cell cycle signaling pathways without increasing apoptosis. Thus, 15-kDa-ALR may be a new therapeutic target for myeloma.
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Affiliation(s)
- Wenqi Huang
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China.,Department of Intensive Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Hang Sun
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Ting Hu
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Dongju Zhu
- Department of Nephrology, The Affiliated Hospital of Panzhihua University, Panzhihua, Sichuan 617000, P.R. China.,Department of Nephrology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Xianli Long
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Hui Guo
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Qi Liu
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
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Augmenter of Liver Regeneration (ALR) regulates bile acid synthesis and attenuates bile acid-induced apoptosis via glycogen synthase kinase-3β (GSK-3β) inhibition. Exp Cell Res 2020; 397:112343. [PMID: 33132196 DOI: 10.1016/j.yexcr.2020.112343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/19/2020] [Accepted: 10/23/2020] [Indexed: 11/23/2022]
Abstract
Bile acid synthesis is restricted to hepatocytes and is rate-limited by CYP7A1 (cholesterol 7α hydroxylase). CYP7A1 expression undergoes tight regulation and is repressed after partial hepatectomy to prevent the accumulation of toxic bile acids. Augmenter of Liver Regeneration (ALR) is a hepatotrophic factor shown to support liver regeneration by augmenting cell proliferation and reducing apoptosis. Nevertheless, less is known about ALR's role in protecting hepatocytes from bile acid accumulation and bile acid-induced apoptosis. Therefore, HepG2 and Huh-7 cells were incubated with recombinant human ALR (rALR) and the expression of CYP7A1, bile acid-induced apoptosis as well as potential molecular mechanisms were analyzed. We found that rALR reduces CYP7A1 expression by increasing nuclear NFκB levels. Moreover, rALR reduced glycochenodeoxycholate (GCDC)-induced-apoptosis by decreased expression of pro-apoptotic Bax and enhanced expression of anti-apoptotic Mcl-1, which is regulated by phosphatidylinositol-3-kinase (PI3K)/Akt activation and glycogen synthase kinase-3β (GSK3β) phosphorylation. Inhibitors for PI3K/Akt (GSK690693) and GSK3β (SB415286) confirmed the specificity of rALR treatment for this pathway. In addition, rALR reduces pro-death signaling by decreasing GCDC-induced JNK phosphorylation. Taken all together, rALR might contribute to protecting hepatocytes from toxic concentrations of bile acids by down-regulating their denovo synthesis, attenuating apoptosis by activation of PI3K/Akt - GSK3β pathway and inhibition of JNK signaling. Thereby this suggests a new role of ALR in augmenting the process of liver regeneration.
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11
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Jiang X, Liao XH, Huang LL, Sun H, Liu Q, Zhang L. Overexpression of augmenter of liver regeneration (ALR) mitigates the effect of H 2O 2-induced endoplasmic reticulum stress in renal tubule epithelial cells. Apoptosis 2020; 24:278-289. [PMID: 30680481 DOI: 10.1007/s10495-019-01517-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Ischemia/reperfusion is a major cause of acute kidney injury and can induce apoptosis in renal epithelial tubule (HK-2) cells. Accumulating evidence indicates that endoplasmic reticulum (ER) stress is a major contributor to apoptosis in acute kidney injury. We previously reported that augmenter of liver regeneration (ALR) functions as an anti-apoptotic factor in H2O2-treated HK-2 cells although the precise mechanism underlying this action remains unclear. In the present study, we investigate the role of ALR in H2O2-induced ER stress-mediated apoptosis. We overexpressed ALR and established a H2O2-induced ER stress model in HK-2 cells. Overexpression of ALR reduced the level of reactive oxygen species and the rate of apoptosis in H2O2-treated HK-2 cells. Using confocal microscopy and western blot, we observed that ALR colocalized with the ER and mitochondria compartment. Moreover, ALR suppressed ER stress by maintaining the morphology of the ER and reducing the levels of the ER-related proteins, glucose-regulated protein 78 (GRP78), phospho-protein kinase-like ER kinase (p-PERK), phospho-eukaryotic initiation factor 2α (p-eIF2α) and C/EBP-homologous protein (CHOP) significantly (p < 0.05). Mechanistically, ALR promoted Bcl-2 expression and suppressed Bax and cleaved-caspase-3 expression significantly during ER-stress induced apoptosis (p < 0.05). Furthermore, ALR attenuated calcium release from the ER, and transfer to mitochondria, under ER stress. To conclude, ALR alleviates H2O2-induced ER stress-mediated apoptosis in HK-2 cells by suppressing ER stress response and by maintaining calcium homeostasis. Consequently, ALR may protect renal tubule epithelial cells from ischemia/reperfusion induced acute kidney injury.
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Affiliation(s)
- Xiao Jiang
- Department of Nephrology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Xiao-Hui Liao
- Department of Nephrology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Li-Li Huang
- Department of Nephrology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Hang Sun
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Qi Liu
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China
| | - Ling Zhang
- Department of Nephrology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, China.
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12
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Zhu DJ, Liao XH, Huang WQ, Sun H, Zhang L, Liu Q. Augmenter of Liver Regeneration Protects Renal Tubular Epithelial Cells From Ischemia-Reperfusion Injury by Promoting PINK1/Parkin-Mediated Mitophagy. Front Physiol 2020; 11:178. [PMID: 32231587 PMCID: PMC7082309 DOI: 10.3389/fphys.2020.00178] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 02/17/2020] [Indexed: 12/12/2022] Open
Abstract
Ischemia–reperfusion (I/R) is the most common cause of acute kidney injury (AKI) and can induce apoptosis in renal epithelial tubule cells. Mitochondrial dysfunction is one of the main reasons for I/R-induced apoptosis. Accumulating evidence suggests that PINK1/Parkin-mediated mitophagy possibly plays a renoprotective role in kidney disease by removing impaired mitochondria and preserving a healthy population of mitochondria. Our previous study showed that augmenter of liver regeneration (ALR) alleviates tubular epithelial cells apoptosis in rats with AKI, although the specific mechanism remains unclear. In this study, we investigated the role of ALR in I/R-induced mitochondrial pathway of apoptosis. We knocked down ALR with short hairpin RNA lentiviral and established an I/R model in human kidney proximal tubular (HK-2) cells in vitro. We observed that the knockdown of ALR aggravated mitochondrial dysfunction and increased the mitochondrial reactive oxygen species (ROS) levels, leading to an increase in cell apoptosis via inhibition of mitophagy. We also found that the PINK1/Parkin pathway was activated by I/R via confocal microscopy and Western blot. Furthermore, the knockdown of ALR suppressed the activation of PINK1 and Parkin. These findings collectively indicate that ALR may protect HK-2 cells from I/R injury by promoting mitophagy, and the mechanism by which ALR regulates mitophagy seems to be related to PINK1 and Parkin. Consequently, ALR may be used as a potential therapeutic agent for AKI in the future.
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Affiliation(s)
- Dong-Ju Zhu
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China.,Department of Nephrology, The Affiliated Hospital, Panzhihua University, Panzhihua, China
| | - Xiao-Hui Liao
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Wen-Qi Huang
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China.,Department of Intensive Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hang Sun
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Ling Zhang
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Qi Liu
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
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13
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AIF meets the CHCHD4/Mia40-dependent mitochondrial import pathway. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165746. [PMID: 32105825 DOI: 10.1016/j.bbadis.2020.165746] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 02/19/2020] [Accepted: 02/20/2020] [Indexed: 02/06/2023]
Abstract
In the mitochondria of healthy cells, Apoptosis-Inducing factor (AIF) is required for the optimal functioning of the respiratory chain machinery, mitochondrial integrity, cell survival, and proliferation. In all analysed species, it was revealed that the downregulation or depletion of AIF provokes mainly the post-transcriptional loss of respiratory chain Complex I protein subunits. Recent progress in the field has revealed that AIF fulfils its mitochondrial pro-survival function by interacting physically and functionally with CHCHD4, the evolutionarily-conserved human homolog of yeast Mia40. The redox-regulated CHCHD4/Mia40-dependent import machinery operates in the intermembrane space of the mitochondrion and controls the import of a set of nuclear-encoded cysteine-motif carrying protein substrates. In addition to their participation in the biogenesis of specific respiratory chain protein subunits, CHCHD4/Mia40 substrates are also implicated in the control of redox regulation, antioxidant response, translation, lipid homeostasis and mitochondrial ultrastructure and dynamics. Here, we discuss recent insights on the AIF/CHCHD4-dependent protein import pathway and review current data concerning the CHCHD4/Mia40 protein substrates in metazoan. Recent findings and the identification of disease-associated mutations in AIF or in specific CHCHD4/Mia40 substrates have highlighted these proteins as potential therapeutic targets in a variety of human disorders.
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14
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Weiss TS, Lupke M, Dayoub R, Geissler EK, Schlitt HJ, Melter M, Eggenhofer E. Augmenter of Liver Regeneration Reduces Ischemia Reperfusion Injury by Less Chemokine Expression, Gr-1 Infiltration and Oxidative Stress. Cells 2019; 8:cells8111421. [PMID: 31718093 PMCID: PMC6912457 DOI: 10.3390/cells8111421] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/08/2019] [Accepted: 11/10/2019] [Indexed: 12/14/2022] Open
Abstract
Hepatic ischemia reperfusion injury (IRI) is a major complication in liver resection and transplantation. Here, we analyzed the impact of recombinant human augmenter of liver regeneration (rALR), an anti-oxidative and anti-apoptotic protein, on the deleterious process induced by ischemia reperfusion (IR). Application of rALR reduced tissue damage (necrosis), levels of lipid peroxidation (oxidative stress) and expression of anti-oxidative genes in a mouse IRI model. Damage associated molecule pattern (DAMP) and inflammatory cytokines such as HMGB1 and TNFα, were not affected by rALR. Furthermore, we evaluated infiltration of inflammatory cells into liver tissue after IRI and found no change in CD3 or γδTCR positive cells, or expression of IL17/IFNγ by γδTCR cells. The quantity of Gr-1 positive cells (neutrophils), and therefore, myeloperoxidase activity, was lower in rALR-treated mice. Moreover, we found under hypoxic conditions attenuated ROS levels after ALR treatment in RAW264.7 cells and in primary mouse hepatocytes. Application of rALR also led to reduced expression of chemo-attractants like CXCL1, CXCL2 and CCl2 in hepatocytes. In addition, ALR expression was increased in IR mouse livers after 3 h and in biopsies from human liver transplants with minimal signs of tissue damage. Therefore, ALR attenuates IRI through reduced neutrophil tissue infiltration mediated by lower expression of key hepatic chemokines and reduction of ROS generation.
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Affiliation(s)
- Thomas S. Weiss
- University Children Hospital (KUNO), University Hospital Regensburg, 93053 Regensburg, Germany; (M.L.); (R.D.); (M.M.)
- Center for Liver Cell Research, University Hospital Regensburg, 93053 Regensburg, Germany
- Correspondence: ; Tel.: +49-9419442195
| | - Madeleine Lupke
- University Children Hospital (KUNO), University Hospital Regensburg, 93053 Regensburg, Germany; (M.L.); (R.D.); (M.M.)
| | - Rania Dayoub
- University Children Hospital (KUNO), University Hospital Regensburg, 93053 Regensburg, Germany; (M.L.); (R.D.); (M.M.)
| | - Edward K. Geissler
- Department of Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (E.K.G.); (H.J.S.); (E.E.)
| | - Hans J. Schlitt
- Department of Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (E.K.G.); (H.J.S.); (E.E.)
| | - Michael Melter
- University Children Hospital (KUNO), University Hospital Regensburg, 93053 Regensburg, Germany; (M.L.); (R.D.); (M.M.)
| | - Elke Eggenhofer
- Department of Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (E.K.G.); (H.J.S.); (E.E.)
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15
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Augmenter of Liver Regeneration Protects Against Acetaminophen-Induced Acute Liver Injury in Mice by Promoting Autophagy. Shock 2019; 52:274-283. [DOI: 10.1097/shk.0000000000001250] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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16
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Huang LL, Liao XH, Sun H, Jiang X, Liu Q, Zhang L. Augmenter of liver regeneration protects the kidney from ischaemia-reperfusion injury in ferroptosis. J Cell Mol Med 2019; 23:4153-4164. [PMID: 30993878 PMCID: PMC6533476 DOI: 10.1111/jcmm.14302] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 03/02/2019] [Accepted: 03/14/2019] [Indexed: 12/20/2022] Open
Abstract
Acute kidney injury (AKI) is a common and severe clinical condition with high morbidity and mortality. Ischaemia‐reperfusion (I/R) injury remains the major cause of AKI in the clinic. Ferroptosis is a recently discovered form of programmed cell death (PCD) that is characterized by iron‐dependent accumulation of reactive oxygen species (ROS). Compelling evidence has shown that renal tubular cell death involves ferroptosis, although the underlying mechanisms remain unclear. Augmenter of liver regeneration (ALR) is a widely distributed multifunctional protein that is expressed in many tissues. Our previous study demonstrated that ALR possesses an anti‐oxidant function. However, the modulatory mechanism of ALR remains unclear and warrants further investigation. Here, to elucidate the role of ALR in ferroptosis, ALR expression was inhibited using short hairpin RNA lentivirals (shRNA) in vitro model of I/R‐induced AKI. The results suggest that the level of ferroptosis is increased, particularly in the shRNA/ALR group, accompanied by increased ROS and mitochondrial damage. Furthermore, inhibition of system xc‐ with erastin aggravates ferroptosis, particularly silencing of the expression of ALR. Unexpectedly, we demonstrate a novel signalling pathway of ferroptosis. In summary, we show for the first time that silencing ALR aggravates ferroptosis in an in vitro model of I/R. Notably, we show that I/R induced kidney ferroptosis is mediated by ALR, which is linked to the glutathione‐glutathione peroxidase (GSH‐GPx) system.
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Affiliation(s)
- Li-Li Huang
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Xiao-Hui Liao
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Hang Sun
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Department of Infectious Diseases, The Second Affiliated Hospital, Institute for Viral Hepatitis, Chongqing Medical University, Chongqing, People's Republic of China
| | - Xiao Jiang
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Qi Liu
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Department of Infectious Diseases, The Second Affiliated Hospital, Institute for Viral Hepatitis, Chongqing Medical University, Chongqing, People's Republic of China
| | - Ling Zhang
- Department of Nephrology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
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17
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Augmenter of liver regeneration: Essential for growth and beyond. Cytokine Growth Factor Rev 2018; 45:65-80. [PMID: 30579845 DOI: 10.1016/j.cytogfr.2018.12.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/12/2018] [Accepted: 12/14/2018] [Indexed: 12/11/2022]
Abstract
Liver regeneration is a well-orchestrated process that is triggered by tissue loss due to trauma or surgical resection and by hepatocellular death induced by toxins or viral infections. Due to the central role of the liver for body homeostasis, intensive research was conducted to identify factors that might contribute to hepatic growth and regeneration. Using a model of partial hepatectomy several factors including cytokines and growth factors that regulate this process were discovered. Among them, a protein was identified to specifically support liver regeneration and therefore was named ALR (Augmenter of Liver Regeneration). ALR protein is encoded by GFER (growth factor erv1-like) gene and can be regulated by various stimuli. ALR is expressed in different tissues in three isoforms which are associated with multiple functions: The long forms of ALR were found in the inner-mitochondrial space (IMS) and the cytosol. Mitochondrial ALR (23 kDa) was shown to cooperate with Mia40 to insure adequate protein folding during import into IMS. On the other hand short form ALR, located mainly in the cytosol, was attributed with anti-apoptotic and anti-oxidative properties as well as its inflammation and metabolism modulating effects. Although a considerable amount of work has been devoted to summarizing the knowledge on ALR, an investigation of ALR expression in different organs (location, subcellular localization) as well as delineation between the isoforms and function of ALR is still missing. This review provides a comprehensive evaluation of ALR structure and expression of different ALR isoforms. Furthermore, we highlight the functional role of endogenously expressed and exogenously applied ALR, as well as an analysis of the clinical importance of ALR, with emphasis on liver disease and in vivo models, as well as the consequences of mutations in the GFER gene.
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18
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Mitochondrial Dysfunctions in Type I Endometrial Carcinoma: Exploring Their Role in Oncogenesis and Tumor Progression. Int J Mol Sci 2018; 19:ijms19072076. [PMID: 30018222 PMCID: PMC6073675 DOI: 10.3390/ijms19072076] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/12/2018] [Accepted: 07/14/2018] [Indexed: 12/16/2022] Open
Abstract
Type I endometrial cancer (EC) is the most common form of EC, displaying less aggressive behavior than type II. The development of type I endometrial cancer is considered a multistep process, with slow progression from normal endometrium to hyperplasia, the premalignant form, and endometrial cancer as a result of an unopposed estrogenic stimulation. The role of mitochondria in type I EC tumor progression and prognosis is currently emerging. This review aims to explore mitochondrial alterations in this cancer and in endometrial hyperplasia focusing on mitochondrial DNA mutations, respiratory complex I deficiency, and the activation of mitochondrial quality control systems. A deeper understanding of altered mitochondrial pathways in type I EC could provide novel opportunities to discover new diagnostic and prognostic markers as well as potential therapeutic targets.
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19
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Shen Y, Liu Q, Lou S, Luo Y, Sun H, Zeng H, Deng J. Decreased expression of the augmenter of liver regeneration results in growth inhibition and increased chemosensitivity of acute T lymphoblastic leukemia cells. Oncol Rep 2017; 38:3130-3136. [PMID: 29048676 DOI: 10.3892/or.2017.5984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 08/17/2017] [Indexed: 11/06/2022] Open
Abstract
Augmenter of liver regeneration (ALR) plays crucial roles in cell survival and growth. Previous studies have demonstrated that ALR exerts a protective effect on toxic agent‑induced cell death in acute T lymphoblastic leukemia cells and ALR knockdown can sensitize cancer cells to radiation. However, the biological functions of ALR against drug resistance in T-cell acute lymphoblastic leukemia are mostly unknown. In the present study, we investigated the effect of small interfering RNA (siRNA)-induced ALR silencing on cell proliferation and sensitivity to vincristine (VCR) of Jurkat cells. We found that ALR siRNA effectively decreased the ALR expression, then inhibited cell growth and increased sensitivity to VCR in Jurkat cells. Flow cytometry assay revealed that the downregulation of ALR expression promoted cell apoptosis and regulated cell cycle distribution. Following incubation with VCR, apoptosis-related proteins, such as pro-PARP, pro-caspase 8, pro-caspase 3 and Bcl-2 were downregulated in the siRNA/ALR group. Pretreatment with siRNA/ALR in combination with VCR resulted in prolonged G2/M arrest, accompanied by downregulation of cdc25c and cdc2 expression and dissociation of cyclin B1. In conclusion, the results of this study demonstrated that targeted inhibition of the ALR expression in Jurkat cells triggered cell growth inhibition and sensitized cells to VCR via promoting apoptosis and regulating the cell cycle.
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Affiliation(s)
- Yan Shen
- Department of Hematology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, P.R. China
| | - Qi Liu
- Institute for Viral Hepatitis, Key Laboratory of Molecular Biology for Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, P.R. China
| | - Shifeng Lou
- Department of Hematology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, P.R. China
| | - Yun Luo
- Department of Hematology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, P.R. China
| | - Hang Sun
- Institute for Viral Hepatitis, Key Laboratory of Molecular Biology for Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, P.R. China
| | - Hanqing Zeng
- Department of Hematology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, P.R. China
| | - Jianchuan Deng
- Department of Hematology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, P.R. China
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20
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Zeng HQ, Luo Y, Lou SF, Liu Q, Zhang L, Deng JC. Silencing of augmenter of liver regeneration inhibited cell proliferation and triggered apoptosis in U266 human multiple myeloma cells. ACTA ACUST UNITED AC 2017; 50:e6139. [PMID: 28876364 PMCID: PMC5579964 DOI: 10.1590/1414-431x20176139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 05/10/2017] [Indexed: 12/11/2022]
Abstract
Augmenter of liver regeneration (ALR) is a thermostable cytokine that was originally identified to promote the growth of hepatocytes. This study was conducted to explore the expression and function of ALR in multiple myeloma (MM), a common hematologic malignancy. Real-time PCR and western blot analysis were performed to detect the expression of ALR in U266 human MM cells and healthy peripheral blood mononuclear cells (PBMCs). U266 MM cells were exposed to 20 or 40 μg/mL of recombinant ALR and tested for cell proliferation. Small interfering RNA-mediated silencing of ALR was done to investigate the role of ALR in cell proliferation, apoptosis, and cytokine production. Compared to PBMCs, U266 MM cells exhibited significantly higher levels of ALR at both the mRNA and protein levels. The addition of recombinant ALR protein significantly promoted the proliferation of U266 cells. In contrast, knockdown of ALR led to a significant decline in the viability and proliferation of U266 cells. Annexin-V/PI staining analysis demonstrated that ALR downregulation increased apoptosis in U266 MM cells, compared to control cells (20.1±1.1 vs 9.1±0.3%, P<0.05). Moreover, ALR depletion reduced the Bcl-2 mRNA level by 40% and raised the Bax mRNA level by 2-fold. Additionally, conditioned medium from ALR-depleted U266 cells had significantly lower concentrations of interleukin-6 than control cells (P<0.05). Taken together, ALR contributed to the proliferation and survival of U266 MM cells, and targeting ALR may have therapeutic potential in the treatment of MM.
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Affiliation(s)
- H Q Zeng
- Department of Hematology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Y Luo
- Department of Hematology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - S F Lou
- Department of Hematology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Q Liu
- Institute of Viral Hepatitis, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - L Zhang
- Department of Nephrology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - J C Deng
- Department of Hematology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Pu T, Liao XH, Sun H, Guo H, Jiang X, Peng JB, Zhang L, Liu Q. Augmenter of liver regeneration regulates autophagy in renal ischemia–reperfusion injury via the AMPK/mTOR pathway. Apoptosis 2017; 22:955-969. [DOI: 10.1007/s10495-017-1370-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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22
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The Oxidation Status of Mic19 Regulates MICOS Assembly. Mol Cell Biol 2015; 35:4222-37. [PMID: 26416881 PMCID: PMC4648825 DOI: 10.1128/mcb.00578-15] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 09/04/2015] [Indexed: 02/04/2023] Open
Abstract
The function of mitochondria depends on the proper organization of mitochondrial membranes. The morphology of the inner membrane is regulated by the recently identified mitochondrial contact site and crista organizing system (MICOS) complex. MICOS mutants exhibit alterations in crista formation, leading to mitochondrial dysfunction. However, the mechanisms that underlie MICOS regulation remain poorly understood. MIC19, a peripheral protein of the inner membrane and component of the MICOS complex, was previously reported to be required for the proper function of MICOS in maintaining the architecture of the inner membrane. Here, we show that human and Saccharomyces cerevisiae MIC19 proteins undergo oxidation in mitochondria and require the mitochondrial intermembrane space assembly (MIA) pathway, which couples the oxidation and import of mitochondrial intermembrane space proteins for mitochondrial localization. Detailed analyses identified yeast Mic19 in two different redox forms. The form that contains an intramolecular disulfide bond is bound to Mic60 of the MICOS complex. Mic19 oxidation is not essential for its integration into the MICOS complex but plays a role in MICOS assembly and the maintenance of the proper inner membrane morphology. These findings suggest that Mic19 is a redox-dependent regulator of MICOS function.
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Han LH, Dong LY, Yu H, Sun GY, Wu Y, Gao J, Thasler W, An W. Deceleration of liver regeneration by knockdown of augmenter of liver regeneration gene is associated with impairment of mitochondrial DNA synthesis in mice. Am J Physiol Gastrointest Liver Physiol 2015; 309:G112-22. [PMID: 25977511 DOI: 10.1152/ajpgi.00435.2014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 05/11/2015] [Indexed: 01/31/2023]
Abstract
Hepatic stimulator substance, also known as augmenter of liver regeneration (ALR), is a novel hepatic mitogen that stimulates liver regeneration after partial hepatectomy (PH). Recent work has indicated that a lack of ALR expression inhibited liver regeneration in rats, and the mechanism seems to be related to increased cell apoptosis. The mitochondria play an important role during liver regeneration. Adequate ATP supply, which is largely dependent on effective mitochondrial biogenesis, is essential for progress of liver regeneration. However, ALR gene expression during liver regeneration, particularly its function with mitochondrial DNA synthesis, remains poorly understood. In this study, ALR expression in hepatocytes of mice was suppressed with ALR short-hairpin RNA interference or ALR deletion (knockout, KO). The ALR-defective mice underwent PH, and the liver was allowed to regenerate for 1 wk. Analysis of liver growth and its correlation with mitochondrial biogenesis showed that both ALR mRNA and protein levels increased robustly in control mice with a maximum at days 3 and 4 post-PH. However, ALR knockdown inhibited hepatic DNA synthesis and decelerated liver regeneration after PH. Furthermore, both in the ALR-knockdown and ALR-KO mice, expression of mitochondrial transcription factor A and peroxisome proliferator-activated receptor-γ coactivator-1α were reduced, resulting in impaired mitochondrial biogenesis. In conclusion, ALR is apparently required to ensure appropriate liver regeneration following PH in mice, and deletion of the ALR gene may delay liver regeneration in part due to impaired mitochondrial biogenesis.
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Affiliation(s)
- Li-hong Han
- Department of Cell Biology and Municipal Laboratory of Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China; and
| | - Ling-yue Dong
- Department of Cell Biology and Municipal Laboratory of Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China; and
| | - Hao Yu
- Department of Cell Biology and Municipal Laboratory of Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China; and
| | - Guang-yong Sun
- Department of Cell Biology and Municipal Laboratory of Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China; and
| | - Yuan Wu
- Department of Cell Biology and Municipal Laboratory of Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China; and
| | - Jian Gao
- Department of Cell Biology and Municipal Laboratory of Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China; and
| | | | - Wei An
- Department of Cell Biology and Municipal Laboratory of Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China; and
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Tang C, Lin H, Wu Q, Zhang Y, Bie P, Yang J. Recombinant human augmenter of liver regeneration protects hepatocyte mitochondrial DNA in rats with obstructive jaundice. J Surg Res 2015; 196:90-101. [PMID: 25818977 DOI: 10.1016/j.jss.2015.02.060] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 02/17/2015] [Accepted: 02/26/2015] [Indexed: 01/26/2023]
Abstract
BACKGROUND Hepatocyte mitochondrial DNA (mtDNA) damage is an important cause of mitochondrial and hepatic function impairment in obstructive jaundice (OJ). This study investigated the protective effect of recombinant human augmenter of liver regeneration (rhALR) on hepatocyte mtDNA in rats with OJ. MATERIALS AND METHODS Wistar rats were randomly divided into three groups as follows: sham-operation, biliary obstruction and recanalization with rhALR treatment (BDO-RBF-rhALR), and BDO-RBF-Vehicle (n = 48 per group). After biliary obstruction, rats were intraperitoneally injected with 40 μg/kg rhALR in BDO-RBF-rhALR group and same volume of normal saline in other two groups once every 12 h, until sacrifice. Mitochondrial transcription factor A (mtTFA) and nuclear respiratory factor-1 (NRF-1) expression in hepatocytes were detected by real-time reverse transcription-polymerase chain reaction and Western blot. Hepatocyte mtDNA damage was evaluated by real-time-polymerase chain reaction. Mitochondrial and hepatic functions were also assessed. RESULTS After biliary obstruction, hepatic function was clearly impaired, as shown by the increases in serum alanine aminotransferase, aspartate aminotransferase, and total bilirubin levels, and the decrease in albumin level. Mitochondrial respiratory control ratio, phosphorus oxygen ratio, and ATP levels (all indicators of mitochondrial function) were decreased. The relative amount of total mtDNA, mtTFA, and NRF-1 expression in rat liver tissues were decreased, whereas the relative amount of deleted mtDNA was increased. However, the damage was significantly improved in the BDO-RBF-rhALR group. After recanalization, these changes were gradually restored, but the recovery was faster in the BDO-RBF-rhALR group than in BDO-RBF-Vehicle group. CONCLUSIONS rhALR may protect and improve mitochondrial and hepatic functions in rats with OJ by promoting the expression of mtTFA and NRF-1 and by protecting and repairing damaged mtDNA.
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Affiliation(s)
- Chun Tang
- Department of Hepatobiliary Surgery, Daping Hospital and Research Institute of Surgery, The Third Military Medical University, Chongqing, China
| | - Heng Lin
- Department of Hepatobiliary Surgery, Institute of Hepatobiliary Surgery Southwest Hospital, The Third Military Medical University, Chongqing, China
| | - Qiao Wu
- Department of Hepatobiliary Surgery, Institute of Hepatobiliary Surgery Southwest Hospital, The Third Military Medical University, Chongqing, China
| | - Yujun Zhang
- Department of Hepatobiliary Surgery, Institute of Hepatobiliary Surgery Southwest Hospital, The Third Military Medical University, Chongqing, China
| | - Ping Bie
- Department of Hepatobiliary Surgery, Institute of Hepatobiliary Surgery Southwest Hospital, The Third Military Medical University, Chongqing, China.
| | - Juntao Yang
- Department of Hepatobiliary Surgery, Daping Hospital and Research Institute of Surgery, The Third Military Medical University, Chongqing, China.
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Shi HB, Sun HQ, Shi HL, Ren F, Chen Y, Chen DX, Lou JL, Duan ZP. Autophagy in anti-apoptotic effect of augmenter of liver regeneration in HepG2 cells. World J Gastroenterol 2015; 21:5250-8. [PMID: 25954098 PMCID: PMC4419065 DOI: 10.3748/wjg.v21.i17.5250] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 12/22/2014] [Accepted: 02/11/2015] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the role of autophagy in the anti-apoptotic effect of augmenter of liver regeneration (ALR). METHODS Autophagy was induced through serum deprivation. An ALR-expressing plasmid was transfected into HepG2 cells, and autophagic flux was determined using fluorescence microscopy, electron microscopy, Western blot and quantitative polymerase chain reaction (qPCR) assays. After ALR-expressing plasmid transfection, an autophagy inhibitor [3-methyladenine (3-MA)] was added to HepG2 cells, and apoptosis was observed using fluorescence microscopy and flow cytometry. RESULTS Autophagy was activated in HepG2 cells, peaking at 24 h after serum deprivation. Microtubule-associated protein light chain three-II levels were higher in HepG2 cells treated with ALR than in control cells, fluorescence microscopy, electron microscopy and qPCR studies showed the similar trend, and p62 levels showed the opposite trend, which indicated that ALR may play an important role in increasing autophagy flux. The numbers of apoptotic cells were substantially higher in HepG2 cells treated with both ALR and 3-MA than in cells treated with ALR alone. Therefore, the protective effect of ALR was significantly attenuated or abolished when autophagy was inhibited, indicating that the anti-apoptotic effect of ALR may be related to autophagy. CONCLUSION ALR protects cells from apoptosis partly through increased autophagy in HepG2 cells and may be valuable as a new therapeutic treatment for liver disease.
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Xia N, Yan RY, Liu Q, Liao XH, Sun H, Guo H, Zhang L. Augmenter of liver regeneration plays a protective role against hydrogen peroxide-induced oxidative stress in renal proximal tubule cells. Apoptosis 2015; 20:423-32. [DOI: 10.1007/s10495-015-1096-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Francavilla A, Pesetti B, Barone M, Morgano A, Bovenga F, Napoli A, Resta L, Russo F, Linsalata M, Minoia M, Bianco G, Tafaro A, Polimeno L. Transient GFER knockdown in vivo impairs liver regeneration after partial hepatectomy. Int J Biochem Cell Biol 2014; 53:343-51. [PMID: 24880092 DOI: 10.1016/j.biocel.2014.05.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 05/03/2014] [Accepted: 05/19/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Augmenter of Liver Regeneration is a protein encoded by the Growth Factor Erv1-Like gene. Its biological properties are crucial for cell survival since knock-out mice for Growth Factor Erv1-Like gene do not survive. In this study, we injected hepatotropic adenoviral particles harboring oligonucleotide sequences against Growth Factor Erv1-Like gene into 70% partially hepatectomized rats and studied the effect of gene silencing on the progression liver regeneration. METHODS Partially hepatectomized rats were divided into three groups of animals and, before surgery, received either phosphate buffer saline, or adenoviral particles alone or adenoviral particles harboring the oligonucleotide silencing sequence. In each group, rats were sacrificed at 12, 24 and 48 h after surgery. Liver tissues were collected to analyze the expression of Augmenter of Liver Regeneration, Bax, Bcl-2 and activated Caspase-9 and -3, as well as hepatocyte proliferation and apoptosis, polyamines levels and histological and ultrastructural features. RESULTS Growth Factor Erv1-Like gene silencing reduced the compensatory hepatocellular proliferation triggered by surgery through (i) the reduction of polyamines synthesis, hepatocyte proliferation and anti-apoptotic gene expression and (ii) the increase of pro-apoptotic gene expression and caspase activation. CONCLUSIONS For the first time, using a technique of gene silencing in vivo, our results demonstrate that Growth Factor Erv1-Like gene knock-down, i.e., the lack of Augmenter of Liver Regeneration, modifies the expression of genes involved in cell apoptosis and inhibits early phase of DNA synthesis. As a consequence, a promotion of cell death and a reduction of cell proliferation occurs.
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Affiliation(s)
| | | | - Michele Barone
- Section of Gastroenterology, DMSS, University of Foggia, Italy
| | | | | | - Anna Napoli
- Section of Anatomy Pathology, DETO, University of Bari, Italy
| | - Leonardo Resta
- Section of Anatomy Pathology, DETO, University of Bari, Italy
| | | | | | - Mario Minoia
- IRCCS "S. de Bellis", Castellana Grotte, Bari, Italy
| | - Giusy Bianco
- IRCCS "S. de Bellis", Castellana Grotte, Bari, Italy
| | - Angela Tafaro
- IRCCS "S. de Bellis", Castellana Grotte, Bari, Italy
| | - Lorenzo Polimeno
- IRCCS "S. de Bellis", Castellana Grotte, Bari, Italy; Section of Gastroenterology, DETO, University of Bari, Italy; Center Interdept. of Res. on Gastroent. and Hepat. of Age of Development (CIRGEEE), University of Bari, Italy
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Augmenter of liver regeneration, a protective factor against ROS-induced oxidative damage in muscle tissue of mitochondrial myopathy affected patients. Int J Biochem Cell Biol 2013; 45:2410-9. [DOI: 10.1016/j.biocel.2013.07.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2013] [Revised: 06/24/2013] [Accepted: 07/09/2013] [Indexed: 01/21/2023]
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Shen Y, Liu Q, Sun H, Li X, Wang N, Guo H. Protective effect of augmenter of liver regeneration on vincristine-induced cell death in Jurkat T leukemia cells. Int Immunopharmacol 2013; 17:162-7. [PMID: 23810409 DOI: 10.1016/j.intimp.2013.05.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 05/21/2013] [Accepted: 05/28/2013] [Indexed: 11/30/2022]
Abstract
Augmenter of liver regeneration (ALR) is a crucial factor in the process of proliferation of hepatocytes. Recently, it has been demonstrated that ALR plays an important role of anti-apoptosis in several cell lines, but the biological effects of ALR in acute T lymphoblastic leukemia have remained unclear. In this study, we investigated the effect of ALR on Jurkat T leukemia cell growth and survival. We found that ALR was up-regulated in Jurkat cells and could reduce the sensitivity of Jurkat cells to vincristine, but had a minimal effect on proliferation of Jurkat cells. Results from analysis of flow cytometry showed ALR attenuated apoptotic cells and inhibited G2/M-arrest in vincristine-treated Jurkat cells. Following incubation with ALR, an increase in pro-caspase8, pro-caspase3, pro-PARP and Bcl-2 levels was observed in vincristine-treated Jurkat cells. In summary, the results of this study demonstrate that ALR protects Jurkat T leukemia cells from vincristine-induced cell death via regulation of apoptotic signaling pathways and cell cycle.
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Affiliation(s)
- Yan Shen
- Chongqing Medical University, Chongqing, China
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Kallergi E, Kalef-Ezra E, Karagouni-Dalakoura K, Tokatlidis K. Common Players in Mitochondria Biogenesis and Neuronal Protection Against Stress-Induced Apoptosis. Neurochem Res 2013; 39:546-55. [DOI: 10.1007/s11064-013-1109-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 07/01/2013] [Accepted: 07/08/2013] [Indexed: 10/26/2022]
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Wang N, Sun H, Shen Y, Li XF, Pan T, Liu GL, Liu Q. Augmenter of liver regeneration inhibits apoptosis of activated human peripheral blood lymphocytesin vitro. Immunopharmacol Immunotoxicol 2013; 35:257-63. [DOI: 10.3109/08923973.2013.764502] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Wang N, Wang Z, Sun H, Shi X, Zhang Y, Liu Q. Augmenter of liver regeneration improves therapeutic effect of hepatocyte homotransplantation in acute liver failure rats. Int Immunopharmacol 2013; 15:325-32. [PMID: 23337881 DOI: 10.1016/j.intimp.2013.01.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 12/31/2012] [Accepted: 01/02/2013] [Indexed: 12/14/2022]
Abstract
Hepatocyte transplantation (HCT) is an available option on treatment for acute liver failure (ALF). However, short-term survival of engraftment and immunological rejections of recipient are major obstacles. Augmenter of liver regeneration (ALR) has cytoprotective and immunoregulatory effects in liver injury, and has been used in many experimental applications. In the present study, we investigated the potential effect and mechanism of recombinant human ALR (rhALR) on ALF rats treated with intraperitoneal HCT. ALF rats induced by d-galactosamine (GalN) were studied in vivo, and were intraperitoneal injected with or without hepatocytes and rhALR 24h after the induction. Animal survival, serum and ascites liver enzymes, tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) were assessed. Histological examination was performed, and liver regeneration, apoptosis and immunological responses were identified by immunohistochemistry assay. Our results showed that rhALR promoted hepatocytes regeneration, attenuated liver injury and suppressed immunological responses. The ascites liver enzyme, serum and ascites pro-inflammatory cytokines (TNF-α, IL-1β), liver histological injury, apoptotic hepatocytes and activated immunocytes were significantly reduced in ALF rats treated with rhALR and HCT compared with those without rhALR. The proliferative and mitotic hepatocytes were markedly increased, and overall survival improved with rhALR. The administration of rhALR improved survival and promoted liver recovery in HCT treatment for ALF, which was associated with the role of proliferative promoter and immunosuppressor. This study suggests that co-treated with rhALR and HCT can provide a promising strategy for the treatment of ALF.
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Affiliation(s)
- Na Wang
- Key Laboratory of Molecular Biology for Infectious Diseases of Ministry of Education of China, The Second Affiliated Hospital, Chongqing Medical University, 74 Linjiang Road, Chongqing, 400010, China
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