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Zhang L, Nan X, Zhou D, Wang X, Zhu S, Li Q, Jia F, Zhu B, Si Y, Cao S, Ye J. Japanese encephalitis virus NS1 and NS1' protein disrupts the blood-brain barrier through macrophage migration inhibitory factor-mediated autophagy. J Virol 2024; 98:e0011624. [PMID: 38591880 PMCID: PMC11092347 DOI: 10.1128/jvi.00116-24] [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: 01/29/2024] [Accepted: 03/17/2024] [Indexed: 04/10/2024] Open
Abstract
Flaviviruses in the Japanese encephalitis virus (JEV) serogroup, such as JEV, West Nile virus, and St. Louis encephalitis virus, can cause severe neurological diseases. The nonstructural protein 1 (NS1) is a multifunctional protein of flavivirus that can be secreted by infected cells and circulate in the host bloodstream. NS1' is an additional form of NS1 protein with 52 amino acids extension at its carboxy-terminal and is produced exclusively by flaviviruses in the JEV serogroup. In this study, we demonstrated that the secreted form of both NS1 and NS1' can disrupt the blood-brain barrier (BBB) of mice, with NS1' exhibiting a stronger effect. Using the in vitro BBB model, we found that treatment of soluble recombinant JEV NS1 or NS1' protein increases the permeability of human brain microvascular endothelial cells (hBMECs) and leads to the degradation of tight junction proteins through the autophagy-lysosomal pathway. Consistently, NS1' protein exhibited a more pronounced effect compared to NS1 in these cellular processes. Further research revealed that the increased expression of macrophage migration inhibitory factor (MIF) is responsible for triggering autophagy after NS1 or NS1' treatment in hBMECs. In addition, TLR4 and NF-κB signaling was found to be involved in the activation of MIF transcription. Moreover, administering the MIF inhibitor has been shown to decrease viral loads and mitigate inflammation in the brains of mice infected with JEV. This research offers a novel perspective on the pathogenesis of JEV. In addition, the stronger effect of NS1' on disrupting the BBB compared to NS1 enhances our understanding of the mechanism by which flaviviruses in the JEV serogroup exhibit neurotropism.IMPORTANCEJapanese encephalitis (JE) is a significant viral encephalitis worldwide, caused by the JE virus (JEV). In some patients, the virus cannot be cleared in time, leading to the breach of the blood-brain barrier (BBB) and invasion of the central nervous system. This invasion may result in cognitive impairment, behavioral disturbances, and even death in both humans and animals. However, the mechanism by which JEV crosses the BBB remains unclear. Previous studies have shown that the flavivirus NS1 protein plays an important role in causing endothelial dysfunction. The NS1' protein is an elongated form of NS1 protein that is particularly produced by flaviviruses in the JEV serogroup. This study revealed that both the secreted NS1 and NS1' of JEV can disrupt the BBB by breaking down tight junction proteins through the autophagy-lysosomal pathway, and NS1' is found to have a stronger effect compared to NS1 in this process. In addition, JEV NS1 and NS1' can stimulate the expression of MIF, which triggers autophagy via the ERK signaling pathway, leading to damage to BBB. Our findings reveal a new function of JEV NS1 and NS1' in the disruption of BBB, thereby providing the potential therapeutic target for JE.
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Affiliation(s)
- Luping Zhang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Huazhong Agricultural University, Wuhan, Hubei, China
- Hubei Hongshan Laboratory, Wuhan, Hubei, China
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Xiaowei Nan
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Huazhong Agricultural University, Wuhan, Hubei, China
- Hubei Hongshan Laboratory, Wuhan, Hubei, China
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Dengyuan Zhou
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Huazhong Agricultural University, Wuhan, Hubei, China
- Hubei Hongshan Laboratory, Wuhan, Hubei, China
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Xugang Wang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Huazhong Agricultural University, Wuhan, Hubei, China
- Hubei Hongshan Laboratory, Wuhan, Hubei, China
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Shuo Zhu
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Huazhong Agricultural University, Wuhan, Hubei, China
- Hubei Hongshan Laboratory, Wuhan, Hubei, China
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Qiuyan Li
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Huazhong Agricultural University, Wuhan, Hubei, China
- Hubei Hongshan Laboratory, Wuhan, Hubei, China
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Fan Jia
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Bibo Zhu
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Huazhong Agricultural University, Wuhan, Hubei, China
- Hubei Hongshan Laboratory, Wuhan, Hubei, China
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Youhui Si
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Huazhong Agricultural University, Wuhan, Hubei, China
- Hubei Hongshan Laboratory, Wuhan, Hubei, China
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Shengbo Cao
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Huazhong Agricultural University, Wuhan, Hubei, China
- Hubei Hongshan Laboratory, Wuhan, Hubei, China
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Jing Ye
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
- Frontiers Science Center for Animal Breeding and Sustainable Production, Huazhong Agricultural University, Wuhan, Hubei, China
- Hubei Hongshan Laboratory, Wuhan, Hubei, China
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, Hubei, China
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Li J, Wang H. Autophagy-dependent ferroptosis in infectious disease. J Transl Int Med 2023; 11:355-362. [PMID: 38130644 PMCID: PMC10732494 DOI: 10.2478/jtim-2023-0099] [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] [Indexed: 12/23/2023] Open
Abstract
Autophagy is the initial defense response of the host against pathogens. Autophagy can be either non-selective or selective. It selectively targets the degradation of autophagic substrates through the sorting and transportation of autophagic receptor proteins. However, excessive autophagy activity will trigger cell death especially ferroptosis, which was characterized by the accumulation of lipid peroxide and free iron. Several certain types of selective autophagy degrade antioxidant systems and ferritin. Here, we summarized the latest researches of autophagy in infection and discuss the regulatory mechanisms and signaling pathways of autophagy-dependent ferroptosis.
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Affiliation(s)
- Jiarou Li
- Department of Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin150086, Heilongjiang Province, China
- Future Medical Laboratory, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin150086, Heilongjiang Province, China
| | - Hongliang Wang
- Department of Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin150086, Heilongjiang Province, China
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Gadde M, Mehrabi-Dehdezi M, Debeb BG, Woodward WA, Rylander MN. Influence of Macrophages on Vascular Invasion of Inflammatory Breast Cancer Emboli Measured Using an In Vitro Microfluidic Multi-Cellular Platform. Cancers (Basel) 2023; 15:4883. [PMID: 37835577 PMCID: PMC10571588 DOI: 10.3390/cancers15194883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/15/2023] Open
Abstract
Inflammatory breast cancer (IBC) is an aggressive disease with a poor prognosis and a lack of effective treatments. It is widely established that understanding the interactions between tumor-associated macrophages (TAMs) and the tumor microenvironment is essential for identifying distinct targeting markers that help with prognosis and subsequent development of effective treatments. In this study, we present a 3D in vitro microfluidic IBC platform consisting of THP1 M0, M1, or M2 macrophages, IBC cells, and endothelial cells. The platform comprises a collagen matrix that includes an endothelialized vessel, creating a physiologically relevant environment for cellular interactions. Through the utilization of this platform, it was discovered that the inclusion of tumor-associated macrophages (TAMs) led to an increase in the formation of new blood vessel sprouts and enhanced permeability of the endothelium, regardless of the macrophage phenotype. Interestingly, the platforms containing THP-1 M1 or M2 macrophages exhibited significantly greater porosity in the collagen extracellular matrix (ECM) compared to the platforms containing THP-1 M0 and the MDA-IBC3 cells alone. Cytokine analysis revealed that IL-8 and MMP9 showed selective increases when macrophages were cultured in the platforms. Notably, intravasation of tumor cells into the vessels was observed exclusively in the platform containing MDA-IBC3 and M0 macrophages.
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Affiliation(s)
- Manasa Gadde
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA; (M.G.); (M.M.-D.)
| | - Melika Mehrabi-Dehdezi
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA; (M.G.); (M.M.-D.)
| | - Bisrat G. Debeb
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
- MD Anderson Morgan Welch Inflammatory Breast Cancer Clinic and Research Program, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | - Wendy A. Woodward
- MD Anderson Morgan Welch Inflammatory Breast Cancer Clinic and Research Program, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Marissa Nichole Rylander
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA; (M.G.); (M.M.-D.)
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
- Oden Institute for Computational and Engineering Sciences, The University of Texas at Austin, Austin, TX 78712, USA
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Zhao J, Wang X, Yu M, Zhang S, Li Q, Liu H, Zhang J, Cai R, Lu C, Li S. The Relevance of Serum Macrophage Migration Inhibitory Factor Level and Executive Function in Patients with White Matter Hyperintensity in Cerebral Small Vessel Disease. Brain Sci 2023; 13:brainsci13040616. [PMID: 37190581 DOI: 10.3390/brainsci13040616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/26/2023] [Accepted: 03/30/2023] [Indexed: 05/17/2023] Open
Abstract
(1) Objective: To investigate the relationship between serum macrophage migration inhibitory factor (MIF) level and white matter hyperintensity (WMH) and executive function (EF) in cerebral small vascular disease (CSVD), and assess the impact and predictive value of MIF level and Fazekas scores in CSVD-related cognitive impairment (CI) (CSVD-CI); (2) Methods: A total of 117 patients with WMH admitted to the First Affiliated Hospital of Xinxiang Medical College from January 2022 to August 2022 were enrolled. According to the Montreal cognitive assessment (MoCA) scale, subjects were divided into a normal cognitive group and an impaired group. All subjects required serum MIF level, 3.0 T MRI, and neuropsychological evaluation to investigate the risk factors for CDVD-CI, analyze the correlation between MIF level, WMH, and EF, and to analyze the diagnostic value of MIF and WMH degree in predicting CSVD-CI; (3) Results: 1. Fazekas score and MIF level were the risk factors of CSVD-CI. 2. The Fazekas score was negatively correlated with MoCA score, positively correlated with Stroop C-Time, Stroop C-Mistake, Stroop interference effects (SIE)-Time, SIE-Mistake, and color trails test (CTT) interference effects (CIE) (B-A). 3. The MIF level was positively correlated with Fazekas score, Stroop C-Time, SIE-Time, CTT B-Time, and CIE (B-A), and negatively correlated with MoCA score. 4. Fazekas score and MIF level were significant factors for diagnosing CSVD-CI; (4) Conclusion: The Fazekas score and MIF level may be the risk factors of CSVD-CI, and they are closely correlated to CI, especially the EF, and they have diagnostic value for CSVD-CI.
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Affiliation(s)
- Jianhua Zhao
- Henan Joint International Research Laboratory of Neurorestoratology for Senile Dementia, Henan Key Laboratory of Neurorestoratology, Neurology Department, First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China
| | - Xiaoting Wang
- Henan Joint International Research Laboratory of Neurorestoratology for Senile Dementia, Henan Key Laboratory of Neurorestoratology, Neurology Department, First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China
| | - Miao Yu
- Henan Joint International Research Laboratory of Neurorestoratology for Senile Dementia, Henan Key Laboratory of Neurorestoratology, Neurology Department, First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China
| | - Shiyun Zhang
- Henan Joint International Research Laboratory of Neurorestoratology for Senile Dementia, Henan Key Laboratory of Neurorestoratology, Neurology Department, First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China
| | - Qiong Li
- Henan Joint International Research Laboratory of Neurorestoratology for Senile Dementia, Henan Key Laboratory of Neurorestoratology, Neurology Department, First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China
| | - Hao Liu
- Henan Joint International Research Laboratory of Neurorestoratology for Senile Dementia, Henan Key Laboratory of Neurorestoratology, Neurology Department, First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China
| | - Jian Zhang
- Imaging Department, First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China
| | - Ruiyan Cai
- Henan Joint International Research Laboratory of Neurorestoratology for Senile Dementia, Henan Key Laboratory of Neurorestoratology, Neurology Department, First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China
| | - Chengbiao Lu
- Sino-UK Joint Laboratory of Brain Function and Injury of Henan Province, Department of Physiology and Neurobiology, Xinxiang Medical University, Xinxiang 453003, China
| | - Shaomin Li
- Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
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Zhao J, Wang X, Li Q, Lu C, Li S. The relevance of serum macrophage migratory inhibitory factor and cognitive dysfunction in patients with cerebral small vascular disease. Front Aging Neurosci 2023; 15:1083818. [PMID: 36824264 PMCID: PMC9941340 DOI: 10.3389/fnagi.2023.1083818] [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: 10/29/2022] [Accepted: 01/18/2023] [Indexed: 02/10/2023] Open
Abstract
Cerebral small vascular disease (CSVD) is a common type of cerebrovascular disease, and an important cause of vascular cognitive impairment (VCI) and stroke. The disease burden is expected to increase further as a result of population aging, an ongoing high prevalence of risk factors (e.g., hypertension), and inadequate management. Due to the poor understanding of pathophysiology in CSVD, there is no effective preventive or therapeutic approach for CSVD. Macrophage migration inhibitory factor (MIF) is a multifunctional cytokine that is related to the occurrence and development of vascular dysfunction diseases. Therefore, MIF may contribute to the pathogenesis of CSVD and VCI. Here, reviewed MIF participation in chronic cerebral ischemia-hypoperfusion and neurodegeneration pathology, including new evidence for CSVD, and its potential role in protection against VCI.
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Affiliation(s)
- Jianhua Zhao
- Henan Joint International Research Laboratory of Neurorestoratology for Senile Dementia, Henan Key Laboratory of Neurorestoratology, Department of Neurology, First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China,*Correspondence: Jianhua Zhao,
| | - Xiaoting Wang
- Henan Joint International Research Laboratory of Neurorestoratology for Senile Dementia, Henan Key Laboratory of Neurorestoratology, Department of Neurology, First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - Qiong Li
- Henan Joint International Research Laboratory of Neurorestoratology for Senile Dementia, Henan Key Laboratory of Neurorestoratology, Department of Neurology, First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - Chengbiao Lu
- Sino-UK Joint Laboratory of Brain Function and Injury of Henan Province, Department of Physiology and Neurobiology, Xinxiang Medical University, Xinxiang, China
| | - Shaomin Li
- Ann Romney Center for Neurologic Diseases, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
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Homme RP, George AK, Singh M, Smolenkova I, Zheng Y, Pushpakumar S, Tyagi SC. Mechanism of Blood-Heart-Barrier Leakage: Implications for COVID-19 Induced Cardiovascular Injury. Int J Mol Sci 2021; 22:ijms222413546. [PMID: 34948342 PMCID: PMC8706694 DOI: 10.3390/ijms222413546] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/08/2021] [Accepted: 12/14/2021] [Indexed: 12/23/2022] Open
Abstract
Although blood–heart-barrier (BHB) leakage is the hallmark of congestive (cardio-pulmonary) heart failure (CHF), the primary cause of death in elderly, and during viral myocarditis resulting from the novel coronavirus variants such as the severe acute respiratory syndrome novel corona virus 2 (SARS-CoV-2) known as COVID-19, the mechanism is unclear. The goal of this project is to determine the mechanism of the BHB in CHF. Endocardial endothelium (EE) is the BHB against leakage of blood from endocardium to the interstitium; however, this BHB is broken during CHF. Previous studies from our laboratory, and others have shown a robust activation of matrix metalloproteinase-9 (MMP-9) during CHF. MMP-9 degrades the connexins leading to EE dysfunction. We demonstrated juxtacrine coupling of EE with myocyte and mitochondria (Mito) but how it works still remains at large. To test whether activation of MMP-9 causes EE barrier dysfunction, we hypothesized that if that were the case then treatment with hydroxychloroquine (HCQ) could, in fact, inhibit MMP-9, and thus preserve the EE barrier/juxtacrine signaling, and synchronous endothelial-myocyte coupling. To determine this, CHF was created by aorta-vena cava fistula (AVF) employing the mouse as a model system. The sham, and AVF mice were treated with HCQ. Cardiac hypertrophy, tissue remodeling-induced mitochondrial-myocyte, and endothelial-myocyte contractions were measured. Microvascular leakage was measured using FITC-albumin conjugate. The cardiac function was measured by echocardiography (Echo). Results suggest that MMP-9 activation, endocardial endothelial leakage, endothelial-myocyte (E-M) uncoupling, dyssynchronous mitochondrial fusion-fission (Mfn2/Drp1 ratio), and mito-myocyte uncoupling in the AVF heart failure were found to be rampant; however, treatment with HCQ successfully mitigated some of the deleterious cardiac alterations during CHF. The findings have direct relevance to the gamut of cardiac manifestations, and the resultant phenotypes arising from the ongoing complications of COVID-19 in human subjects.
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Lebeau G, Lagrave A, Ogire E, Grondin L, Seriacaroupin S, Moutoussamy C, Mavingui P, Hoarau JJ, Roche M, Krejbich-Trotot P, Desprès P, Viranaicken W. Viral Toxin NS1 Implication in Dengue Pathogenesis Making It a Pivotal Target in Development of Efficient Vaccine. Vaccines (Basel) 2021; 9:vaccines9090946. [PMID: 34579183 PMCID: PMC8471935 DOI: 10.3390/vaccines9090946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/29/2021] [Accepted: 08/04/2021] [Indexed: 11/20/2022] Open
Abstract
The mosquito-borne viral disease dengue is a global public health problem causing a wide spectrum of clinical manifestations ranging from mild dengue fever to severe dengue with plasma leakage and bleeding which are often fatal. To date, there are no specific medications to treat dengue and prevent the risk of hemorrhage. Dengue is caused by one of four genetically related but antigenically distinct serotypes DENV-1–DENV-4. The growing burden of the four DENV serotypes has intensified both basic and applied research to better understand dengue physiopathology. Research has shown that the secreted soluble hexameric form of DENV nonstructural protein-1 (sNS1) plays a significant role in the pathogenesis of severe dengue. Here, we provide an overview of the current knowledge about the role of sNS1 in the immunopathogenesis of dengue disease. We discuss the potential use of sNS1 in future vaccine development and its potential to improve dengue vaccine efficiency, particularly against severe dengue illness.
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Hydrogen alleviates cell damage and acute lung injury in sepsis via PINK1/Parkin-mediated mitophagy. Inflamm Res 2021; 70:915-930. [PMID: 34244821 DOI: 10.1007/s00011-021-01481-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/05/2021] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Multiple organ failure (MOF) is the main cause of early death in septic shock. Lungs are among the organs that are affected in MOF, resulting in acute lung injury. Inflammation is an important factor that causes immune cell dysfunction in the pathogenesis of sepsis. Autophagy is involved in the process of inflammation and also occurs in response to cell and tissue injury in several diseases. We previously demonstrated that hydrogen alleviated the inflammation-induced cell injury and organ damage in septic mice. AIM The focus of the present study was to elucidate whether mitophagy mediates the inflammatory response or oxidative injury in sepsis in vitro and in vivo. Furthermore, we evaluated the role of mitophagy in the protective effects of hydrogen against cell injury or organ dysfunction in sepsis. METHOD RAW 264.7 macrophages induced by lipopolysaccharide (LPS) were used as an in vitro model for inflammation, and cecal ligation and puncture (CLP)-induced acute lung injury mice were used as an in vivo model for sepsis. The key protein associated with mitophagy, PTEN-induced putative kinase 1 (PINK1), was knocked down by PINK1 shRNA transfection in RAW 264.7 macrophages or mice. RESULTS Hydrogen ameliorated cell injury and enhanced mitophagy in macrophages stimulated by LPS. PINK1 was required for the mitigation of the cell impairment in LPS-stimulated macrophages by hydrogen treatment. PINK1 knockdown abrogated the beneficial effects of hydrogen on mitophagy in LPS-stimulated macrophages. Hydrogen inhibited acute lung injury in CLP mice via activation of PINK1-mediated mitophagy. CONCLUSION These results suggest that PINK1-mediated mitophagy plays a key role in the protective effects of hydrogen against cell injury in LPS-induced inflammation and CLP-induced acute lung injury.
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Lien TS, Sun DS, Hung SC, Wu WS, Chang HH. Dengue Virus Envelope Protein Domain III Induces Nlrp3 Inflammasome-Dependent NETosis-Mediated Inflammation in Mice. Front Immunol 2021; 12:618577. [PMID: 33815373 PMCID: PMC8009969 DOI: 10.3389/fimmu.2021.618577] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 02/22/2021] [Indexed: 12/18/2022] Open
Abstract
Abnormal immune responses and cytokine storm are involved in the development of severe dengue, a life-threatening disease with high mortality. Dengue virus-induced neutrophil NETosis response is associated with cytokine storm; while the role of viral factors on the elicitation of excessive inflammation mains unclear. Here we found that treatments of dengue virus envelope protein domain III (EIII), cellular binding moiety of virion, is sufficient to induce neutrophil NETosis processes in vitro and in vivo. Challenges of EIII in inflammasome Nlrp3-/- and Casp1-/- mutant mice resulted in less inflammation and NETosis responses, as compared to the wild type controls. Blockages of EIII-neutrophil interaction using cell-binding competitive inhibitor or selective Nlrp3 inflammasome inhibitors OLT1177 and Z-WHED-FMK can suppress EIII-induced NETosis response. These results collectively suggest that Nlrp3 inflammsome is a molecular target for treating dengue-elicited inflammatory pathogenesis.
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Affiliation(s)
- Te-Sheng Lien
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan
| | - Der-Shan Sun
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan
- Institute of Medical Sciences, Tzu-Chi University, Hualien, Taiwan
| | - Shih-Che Hung
- Institute of Medical Sciences, Tzu-Chi University, Hualien, Taiwan
| | - Wen-Sheng Wu
- Division of General Surgery, Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
- School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Hsin-Hou Chang
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan
- Institute of Medical Sciences, Tzu-Chi University, Hualien, Taiwan
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Lien TS, Sun DS, Wu CY, Chang HH. Exposure to Dengue Envelope Protein Domain III Induces Nlrp3 Inflammasome-Dependent Endothelial Dysfunction and Hemorrhage in Mice. Front Immunol 2021; 12:617251. [PMID: 33717109 PMCID: PMC7947687 DOI: 10.3389/fimmu.2021.617251] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 01/18/2021] [Indexed: 12/12/2022] Open
Abstract
Typically occurring during secondary dengue virus (DENV) infections, dengue hemorrhagic fever (DHF) causes abnormal immune responses, as well as endothelial vascular dysfunction, for which the responsible viral factor remains unclear. During peak viremia, the plasma levels of virion-associated envelope protein domain III (EIII) increases to a point at which cell death is sufficiently induced in megakaryocytes in vitro. Thus, EIII may constitute a virulence factor for endothelial damage. In this study, we examined endothelial cell death induced by treatment with DENV and EIII in vitro. Notably, pyroptosis, the major type of endothelial cell death observed, was attenuated through treatment with Nlrp3 inflammasome inhibitors. EIII injection effectively induced endothelial abnormalities, and sequential injection of EIII and DENV-NS1 autoantibodies induced further vascular damage, liver dysfunction, thrombocytopenia, and hemorrhage, which are typical manifestations in DHF. Under the same treatments, pathophysiological changes in the Nlrp3 inflammasome–deficient mice were notably reduced compared with those in the wild-type mice. These results suggest that the Nlrp3 inflammasome constitutes a potential therapeutic target for treating DENV-induced hemorrhage in DHF.
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Affiliation(s)
- Te-Sheng Lien
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan
| | - Der-Shan Sun
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan
| | - Cheng-Yeu Wu
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan
| | - Hsin-Hou Chang
- Department of Molecular Biology and Human Genetics, Tzu-Chi University, Hualien, Taiwan
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Yun CS, Masaka H, Nishino D, Horaku S, Rahman ANMI, Khandoker MAMY, Yamauchi N. Analysis of novel embryonic factors of cattle and effects on endometrial cells in vitro. Anim Reprod Sci 2021; 226:106696. [PMID: 33517065 DOI: 10.1016/j.anireprosci.2021.106696] [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: 06/01/2020] [Revised: 01/06/2021] [Accepted: 01/07/2021] [Indexed: 11/16/2022]
Abstract
Interferon tau (IFNT) is thought to have essential functions in maternal recognition and establishment of pregnancy in ruminants. There, however, is a lack of research on embryonic factors that affect pregnancy other than IFNT. The present study was conducted to determine what are other embryo-derived factors involved in pregnancy recognition and to identify effects on endometrial cells using an in vitro culture system. With use of LC-MS/MS procedures to evaluate the supernatant of elongating embryos of cattle in culture, there was detection of 78 secretary proteins including five cytokines and two growth factors. Then there was analysis for up-regulated genes using ingenuity pathway procedure, IFNT and MIF were identified as upstream regulators of 37 and five genes, respectively. The mRNA transcript of MIF receptors was identified in endometrial cells, however, not in embryos. Among genes induced by MIF, CCL2, IL7 and IL23A transcripts were identified in endometrial cells. When endometrial cells were treated with interferon alpha (IFNA) and MIF, the CCL2 transcript was in a larger abundance of endometrial epithelial and polymorphonuclear neutrophil cells, and there was a larger abundance of there mRNA transcripts as a result of MIF treatment of peripheral blood mononuclear cells. In conclusion, MIF secreted by elongating embryos of cattle synergistically regulates relative abundances of specific mRNA transcripts of endometrial cells when there is treatment with IFNA, indicating further there are several factors other than IFNT that have effects on gene expression in the endometrium during early stages of gestation in cattle.
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Affiliation(s)
- Chi Sun Yun
- Department of Animal and Marine Bioresource Sciences, Faculty of Agriculture, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Hironori Masaka
- Department of Animal and Marine Bioresource Sciences, Faculty of Agriculture, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Daichi Nishino
- Department of Animal and Marine Bioresource Sciences, Faculty of Agriculture, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Shutaro Horaku
- Department of Animal and Marine Bioresource Sciences, Faculty of Agriculture, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Al-Nur Md Iftekhar Rahman
- Department of Animal and Marine Bioresource Sciences, Faculty of Agriculture, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan; Department of Animal Nutrition, Genetics and Breeding, Faculty of Animal Science and Veterinary Medicine, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagor, Dhaka, 1207, Bangladesh
| | - M A M Yahia Khandoker
- Department of Animal Breeding and Genetics, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Nobuhiko Yamauchi
- Department of Animal and Marine Bioresource Sciences, Faculty of Agriculture, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan.
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12
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Antagonism of Macrophage Migration Inhibitory Factory (MIF) after Traumatic Brain Injury Ameliorates Astrocytosis and Peripheral Lymphocyte Activation and Expansion. Int J Mol Sci 2020; 21:ijms21207448. [PMID: 33050322 PMCID: PMC7589344 DOI: 10.3390/ijms21207448] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/10/2020] [Accepted: 09/23/2020] [Indexed: 12/22/2022] Open
Abstract
Traumatic brain injury (TBI) precedes the onset of epilepsy in up to 15–20% of symptomatic epilepsies and up to 5% of all epilepsy. Treatment of acquired epilepsies, including post-traumatic epilepsy (PTE), presents clinical challenges, including frequent resistance to anti-epileptic therapies. Considering that over 1.6 million Americans present with a TBI each year, PTE is an urgent clinical problem. Neuroinflammation is thought to play a major causative role in many of the post-traumatic syndromes, including PTE. Increasing evidence suggests that neuroinflammation facilitates and potentially contributes to seizure induction and propagation. The inflammatory cytokine, macrophage migration inhibitory factor (MIF), is elevated after TBI and higher levels of MIF correlate with worse post-traumatic outcomes. MIF was recently demonstrated to directly alter the firing dynamics of CA1 pyramidal neurons in the hippocampus, a structure critically involved in many types of seizures. We hypothesized that antagonizing MIF after TBI would be anti-inflammatory, anti-neuroinflammatory and neuroprotective. The results show that administering the MIF antagonist ISO1 at 30 min after TBI prevented astrocytosis but was not neuroprotective in the peri-lesion cortex. The results also show that ISO1 inhibited the TBI-induced increase in γδT cells in the gut, and the percent of B cells infiltrating into the brain. The ISO1 treatment also increased this population of B cells in the spleen. These findings are discussed with an eye towards their therapeutic potential for post-traumatic syndromes, including PTE.
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13
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Lai YC, Chao CH, Yeh TM. Roles of Macrophage Migration Inhibitory Factor in Dengue Pathogenesis: From Pathogenic Factor to Therapeutic Target. Microorganisms 2020; 8:microorganisms8060891. [PMID: 32545679 PMCID: PMC7356240 DOI: 10.3390/microorganisms8060891] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/03/2020] [Accepted: 06/10/2020] [Indexed: 12/16/2022] Open
Abstract
Dengue virus (DENV) infection is the most prevalent mosquito-borne viral infection and can lead to severe dengue hemorrhagic fever (DHF) and even life-threatening dengue shock syndrome (DSS). Although the cytokine storm has been revealed as a critical factor in dengue disease, the limited understanding of dengue immunopathogenesis hinders the development of effective treatments. Macrophage migration inhibitory factor (MIF) is a pleiotropic proinflammatory cytokine that mediates diverse immune responses, and the serum level of MIF positively correlates with disease severity in patients with dengue. MIF is involved in DENV replication and many pathological changes, such as vascular leakage, during DENV infection. In this paper, the pathogenic roles of MIF and the regulation of MIF secretion during DENV infection are reviewed. Furthermore, whether MIF is a potential therapeutic target against DENV infection is also discussed.
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Affiliation(s)
- Yen-Chung Lai
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan; (Y.-C.L.); (C.-H.C.)
| | - Chiao-Hsuan Chao
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan; (Y.-C.L.); (C.-H.C.)
| | - Trai-Ming Yeh
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
- Correspondence: ; Tel.: +886-6-2353535 (ext. 5778)
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14
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Roedig H, Damiescu R, Zeng-Brouwers J, Kutija I, Trebicka J, Wygrecka M, Schaefer L. Danger matrix molecules orchestrate CD14/CD44 signaling in cancer development. Semin Cancer Biol 2020; 62:31-47. [PMID: 31412297 DOI: 10.1016/j.semcancer.2019.07.026] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 07/29/2019] [Accepted: 07/30/2019] [Indexed: 02/06/2023]
Abstract
The tumor matrix together with inflammation and autophagy are crucial regulators of cancer development. Embedded in the tumor stroma are numerous proteoglycans which, in their soluble form, act as danger-associated molecular patterns (DAMPs). By interacting with innate immune receptors, the Toll-like receptors (TLRs), DAMPs autonomously trigger aseptic inflammation and can regulate autophagy. Biglycan, a known danger proteoglycan, can regulate the cross-talk between inflammation and autophagy by evoking a switch between pro-inflammatory CD14 and pro-autophagic CD44 co-receptors for TLRs. Thus, these novel mechanistic insights provide some explanation for the plethora of reports indicating that the same matrix-derived DAMP acts either as a promoter or suppressor of tumor growth. In this review we will summarize and critically discuss the role of the matrix-derived DAMPs biglycan, hyaluronan, and versican in regulating the TLR-, CD14- and CD44-signaling dialogue between inflammation and autophagy with particular emphasis on cancer development.
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Affiliation(s)
- Heiko Roedig
- Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Goethe University, Frankfurt am Main, Germany
| | - Roxana Damiescu
- Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Goethe University, Frankfurt am Main, Germany
| | - Jinyang Zeng-Brouwers
- Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Goethe University, Frankfurt am Main, Germany
| | - Iva Kutija
- Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Goethe University, Frankfurt am Main, Germany
| | - Jonel Trebicka
- Translational Hepatology, Department of Internal Medicine I, University Clinic Frankfurt, Germany
| | - Malgorzata Wygrecka
- Department of Biochemistry, Faculty of Medicine, Universities of Giessen and Marburg Lung Center, Giessen, Germany
| | - Liliana Schaefer
- Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Goethe University, Frankfurt am Main, Germany.
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15
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Acharya B, Gyeltshen S, Chaijaroenkul W, Na-Bangchang K. Significance of Autophagy in Dengue Virus Infection: A Brief Review. Am J Trop Med Hyg 2020; 100:783-790. [PMID: 30761986 DOI: 10.4269/ajtmh.18-0761] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Dengue virus (DENV) causes asymptomatic to severe life-threatening infections and affects millions of people worldwide. Autophagy, a cellular degradative pathway, has both proviral and antiviral functions. Dengue virus triggers the autophagy pathway for the successful replication of its genome. However, the exact mechanism and the viral factors involved in activating this pathway remain unclear. This review summarizes the existing knowledge on the mechanism of autophagy induction and its significance during DENV infection.
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Affiliation(s)
- Bishwanath Acharya
- Chulabhorn International College of Medicine, Thammasat University, Rangsit Center, Klong Luang, Thailand
| | - Sonam Gyeltshen
- Chulabhorn International College of Medicine, Thammasat University, Rangsit Center, Klong Luang, Thailand
| | - Wanna Chaijaroenkul
- Chulabhorn International College of Medicine, Thammasat University, Rangsit Center, Klong Luang, Thailand
| | - Kesara Na-Bangchang
- Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Chulabhorn International College of Medicine, Thammasat University, Rangsit Center, Klong Luang, Thailand.,Chulabhorn International College of Medicine, Thammasat University, Rangsit Center, Klong Luang, Thailand
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16
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Casassa AF, Vanrell MC, Colombo MI, Gottlieb RA, Romano PS. Autophagy plays a protective role against Trypanosoma cruzi infection in mice. Virulence 2019; 10:151-165. [PMID: 30829115 PMCID: PMC6550547 DOI: 10.1080/21505594.2019.1584027] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Autophagy is a catabolic pathway required for cellular and organism homeostasis. Autophagy participates in the innate and adaptive immune responses at different levels. Xenophagy is a class of selective autophagy that involves the elimination of intracellular pathogens. Trypanosoma cruzi is the causative agent of Chagas, a disease that affects 8 million individuals worldwide. Previously, our group has demonstrated that autophagy participates in the invasion of T. cruzi in non-phagocytic cells. In this work we have studied the involvement of autophagy in the development of T. cruzi infection in mice. Beclin-1 is a protein essential for autophagy, required for autophagosome biogenesis and maturation. We have performed an acute model of infection on the autophagic deficient Beclin-1 heterozygous knock-out mice (Bcln±) and compared to control Bcln+/+ animals. In addition, we have analyzed the infection process in both peritoneal cells and RAW macrophages. Our results have shown that the infection was more aggressive in the autophagy-deficient mice, which displayed higher numbers of parasitemia, heart´s parasitic nests and mortality rates. We have also found that peritoneal cells derived from Bcln± animals and RAW macrophages treated with autophagy inhibitors displayed higher levels of infection compared to controls. Interestingly, free cytosolic parasites recruited LC3 protein and other markers of xenophagy in control compared to autophagy-deficient cells. Taken together, these data suggest that autophagy plays a protective role against T. cruzi infection in mice, xenophagy being one of the processes activated as part of the repertoire of immune responses generated by the host.
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Affiliation(s)
- Ana Florencia Casassa
- a Laboratorio de Biología de Trypanosoma cruzi y la célula hospedadora- Instituto de Histología y Embriología "Dr. Mario H. Burgos" , (IHEM-CONICET- Universidad Nacional de Cuyo) , Mendoza , Argentina
| | - María Cristina Vanrell
- a Laboratorio de Biología de Trypanosoma cruzi y la célula hospedadora- Instituto de Histología y Embriología "Dr. Mario H. Burgos" , (IHEM-CONICET- Universidad Nacional de Cuyo) , Mendoza , Argentina.,b Facultad de Ciencias Médicas , Universidad Nacional de Cuyo , Mendoza , Argentina
| | - María Isabel Colombo
- b Facultad de Ciencias Médicas , Universidad Nacional de Cuyo , Mendoza , Argentina.,c Laboratorio: Mecanismos moleculares implicados en el tráfico vesicular y la vía autofágica Instituto de Histología y Embriología (IHEM) "Dr. Mario H. Burgos" , (IHEM-CONICET- Universidad Nacional de Cuyo) , Mendoza , Argentina
| | - Roberta A Gottlieb
- d Smidt Heart Institute , Cedars-Sinai Medical Center , Los Angeles , CA , USA
| | - Patricia Silvia Romano
- a Laboratorio de Biología de Trypanosoma cruzi y la célula hospedadora- Instituto de Histología y Embriología "Dr. Mario H. Burgos" , (IHEM-CONICET- Universidad Nacional de Cuyo) , Mendoza , Argentina.,b Facultad de Ciencias Médicas , Universidad Nacional de Cuyo , Mendoza , Argentina
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17
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Roedig H, Nastase MV, Wygrecka M, Schaefer L. Breaking down chronic inflammatory diseases: the role of biglycan in promoting a switch between inflammation and autophagy. FEBS J 2019; 286:2965-2979. [DOI: 10.1111/febs.14791] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/31/2019] [Accepted: 02/15/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Heiko Roedig
- Pharmazentrum Frankfurt/ZAFES Institut für Allgemeine Pharmakologie und Toxikologie Klinikum der Goethe‐Universität Frankfurt am Main Germany
| | - Madalina Viviana Nastase
- Pharmazentrum Frankfurt/ZAFES Institut für Allgemeine Pharmakologie und Toxikologie Klinikum der Goethe‐Universität Frankfurt am Main Germany
| | - Malgorzata Wygrecka
- Department of Biochemistry Faculty of Medicine Universities of Giessen and Marburg Lung Center Germany
| | - Liliana Schaefer
- Pharmazentrum Frankfurt/ZAFES Institut für Allgemeine Pharmakologie und Toxikologie Klinikum der Goethe‐Universität Frankfurt am Main Germany
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18
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Biglycan evokes autophagy in macrophages via a novel CD44/Toll-like receptor 4 signaling axis in ischemia/reperfusion injury. Kidney Int 2019; 95:540-562. [PMID: 30712922 DOI: 10.1016/j.kint.2018.10.037] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/09/2018] [Accepted: 10/24/2018] [Indexed: 01/14/2023]
Abstract
Biglycan, a small leucine-rich proteoglycan, acts as a danger signal and is classically thought to promote macrophage recruitment via Toll-like receptors (TLR) 2 and 4. We have recently shown that biglycan signaling through TLR 2/4 and the CD14 co-receptor regulates inflammation, suggesting that TLR co-receptors may determine whether biglycan-TLR signaling is pro- or anti-inflammatory. Here, we sought to identify other co-receptors and characterize their impact on biglycan-TLR signaling. We found a marked increase in the number of autophagic macrophages in mice stably overexpressing soluble biglycan. In vitro, stimulation of murine macrophages with biglycan triggered autophagosome formation and enhanced the flux of autophagy markers. Soluble biglycan also promoted autophagy in human peripheral blood macrophages. Using macrophages from mice lacking TLR2 and/or TLR4, CD14, or CD44, we demonstrated that the pro-autophagy signal required TLR4 interaction with CD44, a receptor involved in adhesion, migration, lymphocyte activation, and angiogenesis. In vivo, transient overexpression of circulating biglycan at the onset of renal ischemia/reperfusion injury (IRI) enhanced M1 macrophage recruitment into the kidneys of Cd44+/+ and Cd44-/- mice but not Cd14-/- mice. The biglycan-CD44 interaction increased M1 autophagy and the number of renal M2 macrophages and reduced tubular damage following IRI. Thus, CD44 is a novel signaling co-receptor for biglycan, an interaction that is required for TLR4-CD44-dependent pro-autophagic activity in macrophages. Interfering with the interaction between biglycan and specific TLR co-receptors could represent a promising therapeutic intervention to curtail kidney inflammation and damage.
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19
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Lu LH, Chao CH, Yeh TM. Inhibition of autophagy protects against sepsis by concurrently attenuating the cytokine storm and vascular leakage. J Infect 2019; 78:178-186. [PMID: 30653985 DOI: 10.1016/j.jinf.2018.12.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 10/24/2018] [Accepted: 12/17/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVES Sepsis is an overwhelming systemic inflammatory response for which no satisfactory therapeutic drug is available. Previous studies have shown that autophagy is involved in the cytokine storm and vascular leakage that occur during sepsis. Therefore, we aimed to evaluate the therapeutic potential of autophagy inhibitors against bacterial infection-induced sepsis. METHODS Cytokine production and phagocytosis of bacteria by human leukocytes and the permeability of endothelial cells were determined after the co-incubation of cells with lipopolysaccharide (LPS) or Escherichia coli in the presence or absence of autophagy inhibitors in vitro. Furthermore, the therapeutic effects of the autophagy inhibitors in E. coli-infected mice were analysed. RESULTS In the presence of the autophagy inhibitors, the LPS-triggered cytokine secretion of human leucocytes and LPS (or LPS-conditioned medium from leucocytes)-induced endothelial hyperpermeability were significantly reduced. Moreover, the inhibition of autophagy enhanced the clearance of E. coli by leucocytes in vitro. Finally, we demonstrated that post-treatment but not pretreatment with an autophagy inhibitor (hydroxychloroquine) completely protected mice against E. coli infection-induced lethality by simultaneously reducing cytokine production and vascular leakage and enhancing bacterial clearance. CONCLUSIONS These results suggest that autophagy plays an important role in the pathogenesis of sepsis and could serve as a potential therapeutic target for sepsis.
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Affiliation(s)
- Liang-Hsuan Lu
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chiao-Hsuan Chao
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Trai-Ming Yeh
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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20
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Macrophage Migration Inhibitory Factor Levels Correlate with Stroke Recurrence in Patients with Ischemic Stroke. Neurotox Res 2018; 36:1-11. [DOI: 10.1007/s12640-018-9984-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/13/2018] [Accepted: 11/22/2018] [Indexed: 01/08/2023]
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21
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Role of MIF and D-DT in immune-inflammatory, autoimmune, and chronic respiratory diseases: from pathogenic factors to therapeutic targets. Drug Discov Today 2018; 24:428-439. [PMID: 30439447 DOI: 10.1016/j.drudis.2018.11.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 10/04/2018] [Accepted: 11/06/2018] [Indexed: 01/03/2023]
Abstract
Macrophage migration inhibitory factor (MIF) is a protein that acts as a cytokine-, enzyme-, endocrine- and chaperon-like molecule. It binds to the cell-surface receptor CD74 in association with CD44, which activates the downstream signal transduction pathway. In addition, MIF acts also as a noncognate ligand for C-X-C chemokine receptor type 2 (CXCR2), type 4 (CXCR4), and type 7 (CXCR7). Recently, D-dopachrome tautomerase (D-DT), a second member of the MIF superfamily, was identified. From a pharmacological and clinical point of view, the nonredundant biological properties of MIF and D-DT anticipate potential synergisms from their simultaneous inhibition. Here, we focus on the role of MIF and D-DT in human immune-inflammatory, autoimmune, and chronic respiratory diseases, providing an update on the progress made in the identification of specific small-molecule inhibitors of these proteins.
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22
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23
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Macrophage Migration Inhibitory Factor-Induced Autophagy Contributes to Thrombin-Triggered Endothelial Hyperpermeability in Sepsis. Shock 2018; 50:103-111. [DOI: 10.1097/shk.0000000000000976] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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24
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Minocycline suppresses dengue virus replication by down-regulation of macrophage migration inhibitory factor-induced autophagy. Antiviral Res 2018; 155:28-38. [DOI: 10.1016/j.antiviral.2018.05.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/02/2018] [Accepted: 05/05/2018] [Indexed: 02/01/2023]
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25
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Wang SS, Cen X, Liang XH, Tang YL. Macrophage migration inhibitory factor: a potential driver and biomarker for head and neck squamous cell carcinoma. Oncotarget 2018; 8:10650-10661. [PMID: 27788497 PMCID: PMC5354689 DOI: 10.18632/oncotarget.12890] [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: 09/20/2016] [Accepted: 10/19/2016] [Indexed: 02/05/2023] Open
Abstract
Macrophage migration inhibitory factor (MIF), a pleiotropic proinflammatory cytokine, has been showed to be associated with the immunopathogenesis of many diseases. Recent study demonstrated that MIF promoted tumorigenesis and tumor progression and played a critical role in various kinds of human cancer including head and neck squamous cell carcinoma(HNSCC). Hence, in this paper we retrospected the relationship between MIF and angiogenesis, epithelial-mesenchymal transition (EMT), inflammation, immune response, hypoxia microenvironment, and discussed whether it is a promising biomarker for diagnosis and supervisor of HNSCC.
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Affiliation(s)
- Sha-Sha Wang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu Sichuan, People's Republic of China.,Department of Oral and Maxillofacial Surgery, West China College of Stomatology, Sichuan University, Chengdu Sichuan, People's Republic of China
| | - Xiao Cen
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu Sichuan, People's Republic of China.,Department of Oral and Maxillofacial Surgery, West China College of Stomatology, Sichuan University, Chengdu Sichuan, People's Republic of China
| | - Xin-Hua Liang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu Sichuan, People's Republic of China.,Department of Oral and Maxillofacial Surgery, West China College of Stomatology, Sichuan University, Chengdu Sichuan, People's Republic of China
| | - Ya-Ling Tang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu Sichuan, People's Republic of China.,Department of Oral Pathology, West China Hospital of Stomatology, Sichuan University, Chengdu Sichuan, People's Republic of China
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26
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Cytokine MIF Enhances Blood-Brain Barrier Permeability: Impact for Therapy in Ischemic Stroke. Sci Rep 2018; 8:743. [PMID: 29335619 PMCID: PMC5768806 DOI: 10.1038/s41598-017-16927-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 11/19/2017] [Indexed: 01/12/2023] Open
Abstract
Ischemic stroke is a devastating disease with limited therapeutic options. It is very urgent to find a new target for drug development. Here we found that the blood level of MIF in ischemic stroke patients is upregulated. To figure out the pathological role of MIF in ischemic stroke, both in vitro and in vivo studies were conducted. For in vitro studies, primary cortical neuron cultures and adult rat brain endothelial cells (ARBECs) were subjected to oxygen-glucose deprivation (OGD)/reoxygenation. Middle cerebral artery occlusion (MCAo) rodent models were used for in vivo studies. The results show that MIF exerts no direct neuronal toxicity in primary culture but disrupts tight junction in ARBECs. Furthermore, administration of MIF following MCAo shows the deleterious influence on stroke-induced injury by destroying the tight junction of blood-brain barrier and increasing the infarct size. In contrast, administration of MIF antagonist ISO-1 has the profound neuroprotective effect. Our results demonstrate that MIF might be a good drug target for the therapy of stroke.
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27
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Ochi A, Chen D, Schulte W, Leng L, Moeckel N, Piecychna M, Averdunk L, Stoppe C, Bucala R, Moeckel G. MIF-2/D-DT enhances proximal tubular cell regeneration through SLPI- and ATF4-dependent mechanisms. Am J Physiol Renal Physiol 2017; 313:F767-F780. [PMID: 28539339 DOI: 10.1152/ajprenal.00683.2016] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 05/23/2017] [Accepted: 05/24/2017] [Indexed: 12/29/2022] Open
Abstract
Macrophage migration inhibitory factor (MIF) is a cytokine with pleiotropic actions that is produced by several organs and cell types. Depending on the target cell and the inflammatory context, MIF can engage its two component receptor complex CD74 and CD44 and the chemokine receptors CXCR2/4. MIF is constitutively expressed in renal proximal tubular cells, stored in intracellular preformed pools, and released at a low rate. Recently, a second MIF-like protein (i.e., MIF-2/D-DT) has been characterized in mammals. Our study was aimed at examining the role of MIF-2/D-DT, which mediates tissue protection in the heart, in tubular cell regeneration from ischemia-reperfusion injury. We found that Mif-/-, Mif-2-/-, and Cd74-/- mice had significantly worse tubular injury compared with wild-type (WT) control mice and that treatment with MIF-2/D-DT significantly improved recovery of injured epithelial cells. RNAseq analysis of kidney tissue from the ischemia-reperfusion injury model revealed that MIF-2/D-DT treatment stimulates secretory leukocyte proteinase inhibitor (SLPI) and cyclin D1 expression. MIF-2/D-DT additionally activates of eukaryotic initiation factor (eIF) 2α and activating transcription factor (ATF) 4, two transcription factors involved in the integrated stress response (ISR), which is a cellular stress response activated by hypoxia, nutrient deprivation, and oxygen radicals. MIF-2/D-DT also inhibited apoptosis and induced autophagy in hypoxia-treated mouse proximal tubular (MPT) cells. These results indicate that MIF-2/D-DT is an important factor in tubular cell regeneration and may be of therapeutic utility as a regenerative agent in the clinical setting of ischemic acute kidney injury.
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Affiliation(s)
- Akinobu Ochi
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut
| | - Dong Chen
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut
| | - Wibke Schulte
- Department of Medicine, Yale University School of Medicine, New Haven, Connecticut; and
| | - Lin Leng
- Department of Medicine, Yale University School of Medicine, New Haven, Connecticut; and
| | - Nickolas Moeckel
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut
| | - Marta Piecychna
- Department of Medicine, Yale University School of Medicine, New Haven, Connecticut; and
| | - Luisa Averdunk
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut.,Department of Anesthesiology and Intensive Care Medicine, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Christian Stoppe
- Department of Anesthesiology and Intensive Care Medicine, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Richard Bucala
- Department of Medicine, Yale University School of Medicine, New Haven, Connecticut; and
| | - Gilbert Moeckel
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut;
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Chen HR, Chuang YC, Lin YS, Liu HS, Liu CC, Perng GC, Yeh TM. Dengue Virus Nonstructural Protein 1 Induces Vascular Leakage through Macrophage Migration Inhibitory Factor and Autophagy. PLoS Negl Trop Dis 2016; 10:e0004828. [PMID: 27409803 PMCID: PMC4943727 DOI: 10.1371/journal.pntd.0004828] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 06/16/2016] [Indexed: 12/14/2022] Open
Abstract
Dengue virus (DENV) is the most common mosquito-borne flavivirus; it can either cause mild dengue fever or the more severe dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS). One of the characteristic features of DHF/DSS is vascular leakage; although DENV nonstructural protein 1 (NS1) has been proved to induce vascular leakage after binding to Toll-like receptor 4, the down-stream mechanism has not yet been fully understood. In the sera of DENV-infected patients, the concentrations of DENV NS1 and inflammatory cytokine macrophage migration inhibitory factor (MIF) are positively correlated with disease severity, but whether DENV NS1 induces vascular leakage through MIF secretion remains unknown. We demonstrated that recombinant NS1 induced vascular leakage and MIF secretion both in human endothelial cell line HMEC-1 and in mice. Furthermore, these phenomena were inhibited in the presence of anti-NS1 antibodies both in vitro and in vivo. DENV NS1 also induced LC3-I to LC3-II conversion and p62 degradation in endothelial cell line, which indicated the formation of autophagy. To clarify whether MIF or autophagy mediated DENV NS1-induced vascular leakage, various inhibitors were applied. The results showed that DENV NS1-induced vascular leakage and VE-cadherin disarray were blocked in the presence of MIF inhibitors, anti-MIF-antibodies or autophagy inhibitors. An Atg5 knockdown clone further confirmed that autophagy formation of endothelial cells was required in NS1-induced vascular leakage. Furthermore, DENV NS1-induced LC3 puncta were also decreased in the presence of MIF inhibitors, indicating that MIF mediated DENV NS1-induced autophagy. Taken together, the results suggest a potential mechanism of DENV-induced vascular leakage and provide possible therapeutic targets against DHF/DSS.
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Affiliation(s)
- Hong-Ru Chen
- The Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
| | - Yung-Chun Chuang
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
| | - Yee-Shin Lin
- The Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
| | - Hsiao-Sheng Liu
- The Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
| | - Ching-Chuan Liu
- The Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
- Department of Pediatrics, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
| | - Guey-Chuen Perng
- The Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
| | - Trai-Ming Yeh
- The Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
- * E-mail:
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29
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Nighot P, Ma T. Role of autophagy in the regulation of epithelial cell junctions. Tissue Barriers 2016; 4:e1171284. [PMID: 27583189 DOI: 10.1080/21688370.2016.1171284] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 03/21/2016] [Accepted: 03/22/2016] [Indexed: 01/07/2023] Open
Abstract
Autophagy is a cell survival mechanism by which bulk cytoplasmic material, including soluble macromolecules and organelles, is targeted for lysosomal degradation. The role of autophagy in diverse cellular processes such as metabolic stress, neurodegeneration, cancer, aging, immunity, and inflammatory diseases is being increasingly recognized. Epithelial cell junctions play an integral role in the cell homeostasis via physical binding, regulating paracellular pathways, integrating extracellular cues into intracellular signaling, and cell-cell communication. Recent data indicates that cell junction composition is very dynamic. The junctional protein complexes are actively regulated in response to various intra- and extra-cellular clues by intracellular trafficking and degradation pathways. This review discusses the recent and emerging information on how autophagy regulates various epithelial cell junctions. The knowledge of autophagy regulation of epithelial junctions will provide further rationale for targeting autophagy in a wide variety of human disease conditions.
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Affiliation(s)
- Prashant Nighot
- Department of Internal Medicine, University of New Mexico School of Medicine , Albuquerque, NM, USA
| | - Thomas Ma
- Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, USA; Veterans Affairs Medical Center, Albuquerque, NM, USA
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30
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Lee JPW, Foote A, Fan H, Peral de Castro C, Lang T, Jones SA, Gavrilescu N, Mills KHG, Leech M, Morand EF, Harris J. Loss of autophagy enhances MIF/macrophage migration inhibitory factor release by macrophages. Autophagy 2016; 12:907-16. [PMID: 27163877 DOI: 10.1080/15548627.2016.1164358] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
MIF (macrophage migration inhibitory factor [glycosylation-inhibiting factor]) is a pro-inflammatory cytokine expressed in multiple cells types, including macrophages. MIF plays a pathogenic role in a number of inflammatory diseases and has been linked to tumor progression in some cancers. Previous work has demonstrated that loss of autophagy in macrophages enhances secretion of IL1 family cytokines. Here, we demonstrate that loss of autophagy, by pharmacological inhibition or siRNA silencing of Atg5, enhances MIF secretion by monocytes and macrophages. We further demonstrate that this is dependent on mitochondrial reactive oxygen species (ROS). Induction of autophagy with MTOR inhibitors had no effect on MIF secretion, but amino acid starvation increased secretion. This was unaffected by Atg5 siRNA but was again dependent on mitochondrial ROS. Our data demonstrate that autophagic regulation of mitochondrial ROS plays a pivotal role in the regulation of inflammatory cytokine secretion in macrophages, with potential implications for the pathogenesis of inflammatory diseases and cancers.
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Affiliation(s)
- Jacinta P W Lee
- a Lupus Research Group, Center for Inflammatory Diseases, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University , Clayton , Victoria , Australia
| | - Andrew Foote
- a Lupus Research Group, Center for Inflammatory Diseases, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University , Clayton , Victoria , Australia
| | - Huapeng Fan
- a Lupus Research Group, Center for Inflammatory Diseases, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University , Clayton , Victoria , Australia
| | - Celia Peral de Castro
- b Immune Regulation Research Group, Department of Biochemistry and Immunology, Trinity College , Dublin , Ireland
| | - Tali Lang
- a Lupus Research Group, Center for Inflammatory Diseases, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University , Clayton , Victoria , Australia
| | - Sarah A Jones
- a Lupus Research Group, Center for Inflammatory Diseases, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University , Clayton , Victoria , Australia
| | - Nichita Gavrilescu
- a Lupus Research Group, Center for Inflammatory Diseases, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University , Clayton , Victoria , Australia
| | - Kingston H G Mills
- b Immune Regulation Research Group, Department of Biochemistry and Immunology, Trinity College , Dublin , Ireland
| | - Michelle Leech
- a Lupus Research Group, Center for Inflammatory Diseases, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University , Clayton , Victoria , Australia
| | - Eric F Morand
- a Lupus Research Group, Center for Inflammatory Diseases, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University , Clayton , Victoria , Australia
| | - James Harris
- a Lupus Research Group, Center for Inflammatory Diseases, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University , Clayton , Victoria , Australia
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31
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Stamatovic SM, Johnson AM, Keep RF, Andjelkovic AV. Junctional proteins of the blood-brain barrier: New insights into function and dysfunction. Tissue Barriers 2016; 4:e1154641. [PMID: 27141427 DOI: 10.1080/21688370.2016.1154641] [Citation(s) in RCA: 234] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 02/08/2016] [Accepted: 02/09/2016] [Indexed: 01/05/2023] Open
Abstract
The blood-brain barrier (BBB) is a highly complex and dynamic barrier. It is formed by an interdependent network of brain capillary endothelial cells, endowed with barrier properties, and perivascular cells (astrocytes and pericytes) responsible for inducing and maintaining those properties. One of the primary properties of the BBB is a strict regulation of paracellular permeability due to the presence of junctional complexes (tight, adherens and gap junctions) between the endothelial cells. Alterations in junction assembly and function significantly affect BBB properties, particularly barrier permeability. However, such alterations are also involved in remodeling the brain endothelial cell surface and regulating brain endothelial cell phenotype. This review summarizes the characteristics of brain endothelial tight, adherens and gap junctions and highlights structural and functional alterations in junctional proteins that may contribute to BBB dysfunction.
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Affiliation(s)
| | - Allison M Johnson
- Department of Pathology; University of Michigan Medical School ; Ann Arbor, MI USA
| | - Richard F Keep
- Department of Neurosurgery; University of Michigan Medical School; Ann Arbor, MI USA; Molecular and Integrative Physiology, University of Michigan Medical School; Ann Arbor, MI USA
| | - Anuska V Andjelkovic
- Department of Pathology; University of Michigan Medical School; Ann Arbor, MI USA; Department of Neurosurgery; University of Michigan Medical School; Ann Arbor, MI USA
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32
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The Protective Role of Autophagy in Matrix Metalloproteinase-Mediated Cell Transmigration and Cell Death in High-Glucose-Treated Endothelial Cells. Inflammation 2016; 39:830-8. [DOI: 10.1007/s10753-016-0313-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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33
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Wang B, Zhong S, Zheng F, Zhang Y, Gao F, Chen Y, Lu B, Xu H, Shi G. N-n-butyl haloperidol iodide protects cardiomyocytes against hypoxia/reoxygenation injury by inhibiting autophagy. Oncotarget 2015; 6:24709-21. [PMID: 26359352 PMCID: PMC4694790 DOI: 10.18632/oncotarget.5077] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/20/2015] [Indexed: 02/05/2023] Open
Abstract
N-n-butyl haloperidol iodide (F2), a novel compound derived from haloperidol, protects against the damaging effects of ischemia/reperfusion (I/R) injury in vitro and in vivo. In this study, we hypothesized the myocardial protection of F2 on cardiomyocyte hypoxia/reoxygenation (H/R) injury is mediated by inhibiting autophagy in H9c2 cells. The degree of autophagy by treatment with F2 exposed to H/R in H9c2 cell was characterized by monodansylcadaverine, transmission electron microscopy, and expression of autophagy marker protein LC3. Our results indicated that treatment with F2 inhibited autophagy in H9c2 cells exposed to H/R. 3-methyladenine, an inhibitor of autophagy, suppressed H/R-induced autophagy, and decreased apoptosis, whereas rapamycin, a classical autophagy sensitizer, increased autophagy and apoptosis. Mechanistically, macrophage migration inhibitory factor (MIF) was inhibited by F2 treatment after H/R. Accordingly, small interfering RNA (siRNA)-mediated MIF knockdown decreased H/R-induced autophagy. In summary, F2 protects cardiomyocytes during H/R injury through suppressing autophagy activation. Our results provide a new mechanistic insight into a functional role of F2 against H/R-induced cardiomyocyte injury and death.
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Affiliation(s)
- Bin Wang
- Department of Pharmacology, Shantou University Medical College, Shantou, 515041 Guangdong, China
| | - Shuping Zhong
- Department of Biochemistry and Molecular Biology, University of Southern California, Los Angeles, CA 90033, USA
| | - Fuchun Zheng
- Department of Pharmacy, The First Affiliated Hospital, Shantou University Medical College, Shantou, 515041 Guangdong, China
| | - Yanmei Zhang
- Department of Pharmacology, Shantou University Medical College, Shantou, 515041 Guangdong, China
| | - Fenfei Gao
- Department of Pharmacology, Shantou University Medical College, Shantou, 515041 Guangdong, China
| | - Yicun Chen
- Department of Pharmacology, Shantou University Medical College, Shantou, 515041 Guangdong, China
| | - Binger Lu
- Department of Pharmacology, Shantou University Medical College, Shantou, 515041 Guangdong, China
| | - Han Xu
- Department of Pharmacology, Shantou University Medical College, Shantou, 515041 Guangdong, China
| | - Ganggang Shi
- Department of Pharmacology, Shantou University Medical College, Shantou, 515041 Guangdong, China
- Department of Cardiovascular Diseases, The First Affiliated Hospital, Shantou University Medical College, Shantou, 515041 Guangdong, China
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34
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Pathogenic roles of macrophage migration inhibitory factor during dengue virus infection. Mediators Inflamm 2015; 2015:547094. [PMID: 25821355 PMCID: PMC4363636 DOI: 10.1155/2015/547094] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 01/14/2015] [Accepted: 02/05/2015] [Indexed: 11/17/2022] Open
Abstract
Dengue virus (DENV) infection is the most common cause of viral hemorrhagic fever, which can lead to life-threatening dengue hemorrhagic fever/dengue shock syndrome (DHF/DSS). Hemorrhage and plasma leakage are two major hallmarks of DHF/DSS. Because the mechanisms causing these pathogenic changes are unclear, there is no effective therapy against DHF/DSS. In this review, we focus on the possible pathogenic effects of a pleiotropic cytokine, macrophage migration inhibitory factor (MIF), on the pathogenesis of DENV infection. MIF is a critical mediator of the host immune response and inflammation, and there is a correlation between the serum levels of MIF and disease severity in dengue patients. Furthermore, MIF knock-out mice exhibit less severe clinical disease and lethality. However, the role of MIF in the pathogenesis of DHF/DSS is not limited to immune cell recruitment. Recent evidence indicates that DENV infection induced MIF production and may contribute to vascular hyperpermeability and viral replication during DENV infection. The expression of both adhesion and coagulation molecules on MIF-stimulated monocytes and endothelial cells is also increased, which may contribute to inflammatory and anticoagulatory states during DHF/DSS. Therefore, blocking MIF production or its function may provide a solution for the treatment and prevention of DHF/DSS.
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