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Xie Y, Chi Y, Tao X, Yu P, Liu Q, Zhang M, Yang N, Liu S, Zhu W. Rabies Virus Regulates Inflammatory Response in BV-2 Cells through Activation of Myd88 and NF-κB Signaling Pathways via TLR7. Int J Mol Sci 2024; 25:9144. [PMID: 39273091 PMCID: PMC11395267 DOI: 10.3390/ijms25179144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2024] [Revised: 08/14/2024] [Accepted: 08/14/2024] [Indexed: 09/15/2024] Open
Abstract
Rabies is a fatal neurological infectious disease caused by rabies virus (RABV), which invades the central nervous system (CNS). RABV with varying virulence regulates chemokine expression, and the mechanisms of signaling pathway activation remains to be elucidated. The relationship between Toll-like receptors (TLRs) and immune response induced by RABV has not been fully clarified. Here, we investigated the role of TLR7 in the immune response induced by RABV, and one-way analysis of variance (ANOVA) was employed to evaluate the data. We found that different RABV strains (SC16, HN10, CVS-11) significantly increased CCL2, CXCL10 and IL-6 production. Blocking assays indicated that the TLR7 inhibitor reduced the expression of CCL2, CXCL10 and IL-6 (p < 0.01). The activation of the Myd88 pathway in BV-2 cells stimulated by RABV was TLR7-dependent, whereas the inhibition of Myd88 activity reduced the expression of CCL2, CXCL10 and IL-6 (p < 0.01). Meanwhile, the RABV stimulation of BV-2 cells resulted in TRL7-mediated activation of NF-κB and induced the nuclear translocation of NF-κB p65. CCL2, CXCL10 and IL-6 release was attenuated by the specific NF-κB inhibitor used (p < 0.01). The findings above demonstrate that RABV-induced expression of CCL2, CXCL10 and IL-6 involves Myd88 and NF-κB pathways via the TLR7 signal.
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Affiliation(s)
- Yuan Xie
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, NHC Key Laboratory of Biosafety, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Yinglin Chi
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, NHC Key Laboratory of Biosafety, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Xiaoyan Tao
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, NHC Key Laboratory of Biosafety, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Pengcheng Yu
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, NHC Key Laboratory of Biosafety, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Qian Liu
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, NHC Key Laboratory of Biosafety, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Minghui Zhang
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, NHC Key Laboratory of Biosafety, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Nuo Yang
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, NHC Key Laboratory of Biosafety, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Shuqing Liu
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, NHC Key Laboratory of Biosafety, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Wuyang Zhu
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, NHC Key Laboratory of Biosafety, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Yu D, Jin R, Liu J, Zhang C, Duan C, Luo X, Yang W, Liu C, Liang J, Li X, Luo T. Rabies Virus Infection Causes Pyroptosis of Neuronal Cells. Int J Mol Sci 2024; 25:5616. [PMID: 38891803 PMCID: PMC11172210 DOI: 10.3390/ijms25115616] [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: 04/19/2024] [Revised: 05/16/2024] [Accepted: 05/18/2024] [Indexed: 06/21/2024] Open
Abstract
Rabies virus (RABV) is a neurotropic virus that causes fatal neurological disease, raising serious public health issues and attracting extensive attention in society. To elucidate the molecular mechanism of RABV-induced neuronal damage, we used hematoxylin-eosin staining, transmission electron microscopy, transcriptomics analysis, and immune response factor testing to investigate RABV-infected neurons. We successfully isolated the neurons from murine brains. The specificity of the isolated neurons was identified by a monoclonal antibody, and the viability of the neurons was 83.53-95.0%. We confirmed that RABV infection induced serious damage to the neurons according to histochemistry and transmission electron microscope (TEM) scanning. In addition, the transcriptomics analysis suggested that multiple genes related to the pyroptosis pathway were significantly upregulated, including gasdermin D (Gsdmd), Nlrp3, caspase-1, and IL-1β, as well as the chemokine genes Ccl2, Ccl3, Ccl4, Ccl5, Ccl7, Ccl12, and Cxcl10. We next verified this finding in the brains of mice infected with the rRC-HL, GX074, and challenge virus standard strain-24 (CVS-24) strains of RABV. Importantly, we found that the expression level of the Gsdmd protein was significantly upregulated in the neurons infected with different RABV strains and ranged from 691.1 to 5764.96 pg/mL, while the basal level of mock-infected neurons was less than 100 pg/mL. Taken together, our findings suggest that Gsdmd-induced pyroptosis is involved in the neuron damage caused by RABV infection.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Xiaoning Li
- College of Animal Science and Veterinary Medicine, Guangxi University, Nanning 530004, China; (D.Y.); (R.J.); (J.L.); (C.Z.); (C.D.); (X.L.); (W.Y.); (C.L.); (J.L.)
| | - Tingrong Luo
- College of Animal Science and Veterinary Medicine, Guangxi University, Nanning 530004, China; (D.Y.); (R.J.); (J.L.); (C.Z.); (C.D.); (X.L.); (W.Y.); (C.L.); (J.L.)
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Qin X, Liu Z, Nong K, Fang X, Chen W, Zhang B, Wu Y, Wang Z, Shi H, Wang X, Zhang H. Porcine-derived antimicrobial peptide PR39 alleviates DSS-induced colitis via the NF-κB/MAPK pathway. Int Immunopharmacol 2024; 127:111385. [PMID: 38113690 DOI: 10.1016/j.intimp.2023.111385] [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: 09/14/2023] [Revised: 11/23/2023] [Accepted: 12/12/2023] [Indexed: 12/21/2023]
Abstract
PR39 is an antimicrobial peptide (AMP) with a variety of biological functions, including antimicrobial, wound healing, leukocyte chemotaxis, angiogenesis, and immunomodulation; however, its therapeutic efficacy in colitis (IBD) has rarely been reported. For this reason, the present study aimed to investigate the therapeutic effect of PR39 on IBD and its underlying mechanisms. In this experiment, a mouse model of ulcerative colitis (UC) was induced with 3 % dextran sulfate (DSS) and administered by rectal injection of PR39. The results of the study showed that 5 mg/kg of PR39 was able to ameliorate the clinical manifestations of DSS-induced UC mice by improving the clinical symptoms, colonic tissue damage, up-regulating the expression of tight junction proteins, and alleviating the systemic inflammation in mice in various ways. The mechanism of action may involve inhibition of the phosphorylation level of proteins related to the NF-κB/MAPK signaling pathway and modulation of the relative abundance of potentially pathogenic (Bacteroides, Pseudoflavonifractor, Barnesiella, and Oscillibacter) and potentially beneficial bacteria (Candidatus_Saccharibacteria, Desulfovibrio, Saccharibacteria) in the intestinal flora. The results enriched the biological functions of PR-39 and also suggested that PR-39 may be able to be used as a novel drug for the treatment of IBD.
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Affiliation(s)
- Xinyun Qin
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Zhineng Liu
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Keyi Nong
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Xin Fang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Wanyan Chen
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Bin Zhang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Yijia Wu
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Zihan Wang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Huiyu Shi
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Xuemei Wang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Haiwen Zhang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China.
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Chato-Astrain J, Toledano-Osorio M, Alaminos M, Toledano M, Sanz M, Osorio R. Effect of functionalized titanium particles with dexamethasone-loaded nanospheres on macrophage polarization and activity. Dent Mater 2024; 40:66-79. [PMID: 37914549 DOI: 10.1016/j.dental.2023.10.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 10/09/2023] [Accepted: 10/25/2023] [Indexed: 11/03/2023]
Abstract
OBJECTIVE The aim of this study was to determine the effect of titanium micro particles (TiP) previously functionalized with nanoparticles doped with dexamethasone (Dex) and doxycycline (Dox), on macrophage polarization and activity. METHODS Macrophages RAW264.7 were cultured in the presence TiP loaded with dexamethasone -NPs (Dex)- and doxycycline -NPs (Dox)-, and as control, TiP with or without doped NPs. Cells were tested with and without previous bacterial lipopolysaccharide endotoxin (LPS) stimulation. Their morphology, proliferation, cytotoxicity, phenotypic change, and cytokines release were assessed by LIVE/DEAD, DNA release, metabolic activity, brightfield and scanning electron microscopy. The test Kruskall-Wallis was used for comparisons, while the cytokine expression profiles were examined by hierarchical clustering (p < 0.05). RESULTS Upon exposure with TiP macrophages were activated and polarized to M1, but without depicting cytotoxic effects. The particles were phagocytised, and vacuolized. When exposed to functionalised TiP with NPs(Dex) and NPs(Dox), the ratio M1/M2 was up to forty times lower compared to TiP alone. When exposed to LPS, TiP reduced cell viability in half. Functionalised TiP with NPs(Dex) inhibited the cytokine release exerted by TiP on macrophages. When macrophages were exposed to functionalised TiPs with NPs(Dex) with and without LPS, the effect of TiP on cytokine secretion was inhibited. SIGNIFICANCE Functionalised TiPs with NPs(Dex) and NPs(Dox) may potentially have beneficial effects on modulating titanium and LPS-related inflammatory reactions.
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Affiliation(s)
- Jesús Chato-Astrain
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, 18016 Granada, Spain; Instituto de Investigación Biosanitaria IBS. Granada, Granada, Spain
| | - Manuel Toledano-Osorio
- Dental School, Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, Granada 18071, Spain..
| | - Miguel Alaminos
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, 18016 Granada, Spain; Instituto de Investigación Biosanitaria IBS. Granada, Granada, Spain
| | - Manuel Toledano
- Instituto de Investigación Biosanitaria IBS. Granada, Granada, Spain; Dental School, Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, Granada 18071, Spain
| | - Mariano Sanz
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group. University Complutense of Madrid, Madrid, Spain
| | - Raquel Osorio
- Instituto de Investigación Biosanitaria IBS. Granada, Granada, Spain; Dental School, Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, Granada 18071, Spain
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Tufail M. Unlocking the potential of the tumor microenvironment for cancer therapy. Pathol Res Pract 2023; 251:154846. [PMID: 37837860 DOI: 10.1016/j.prp.2023.154846] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/15/2023] [Accepted: 10/02/2023] [Indexed: 10/16/2023]
Abstract
The tumor microenvironment (TME) holds a crucial role in the progression of cancer. Epithelial-derived tumors share common traits in shaping the TME. The Warburg effect is a notable phenomenon wherein tumor cells exhibit resistance to apoptosis and an increased reliance on anaerobic glycolysis for energy production. Recognizing the pivotal role of the TME in controlling tumor growth and influencing responses to chemotherapy, researchers have focused on developing potential cancer treatment strategies. A wide array of therapies, including immunotherapies, antiangiogenic agents, interventions targeting cancer-associated fibroblasts (CAF), and therapies directed at the extracellular matrix, have been under investigation and have demonstrated efficacy. Additionally, innovative techniques such as tumor tissue explants, "tumor-on-a-chip" models, and multicellular tumor spheres have been explored in laboratory research. This comprehensive review aims to provide insights into the intricate cross-talk between cancer-associated signaling pathways and the TME in cancer progression, current therapeutic approaches targeting the TME, the immune landscape within solid tumors, the role of the viral TME, and cancer cell metabolism.
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Affiliation(s)
- Muhammad Tufail
- Institute of Biomedical Sciences, Shanxi University, Taiyuan 030006, China.
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Dai C, Yu L, Wang Z, Deng P, Li L, Gu Z, He X, Wang J, Yuan J. Mangiferin and Taurine Ameliorate MSRV Infection by Suppressing NF-κB Signaling. Microbiol Spectr 2023; 11:e0514622. [PMID: 37255471 PMCID: PMC10434205 DOI: 10.1128/spectrum.05146-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 03/28/2023] [Indexed: 06/01/2023] Open
Abstract
The emergence or reemergence of viruses pose a substantial threat and challenge to the world population, livestock, and wildlife. However, the landscape of antiviral agents either for human or animal viral diseases is still underdeveloped. The far tougher actuality is the case that there are no approved antiviral drugs in the aquaculture industry, although there are diverse viral pathogens. In this study, using a novel epithelial cell line derived from the brain of Micropterus salmoides (MSBr), inflammation and oxidative stress were found to implicate the major pathophysiology of M. salmoides rhabdovirus (MSRV) through transcriptome analysis and biochemical tests. Elevated levels of proinflammatory cytokines (interleukin-1β [IL-1β], IL-6, IL-8, tumor necrosis factor alpha [TNF-α], and gamma interferon [IFN-γ]) and accumulated contents of reactive oxygen species (ROS) as well as biomarkers of oxidative damage (protein carbonyl and 8-OHdG) were observed after MSRV infection in the MSBr cells. Mangiferin or taurine dampened MSRV-induced inflammation and rescued the oxidative stress and, thus, inhibited the replication of MSRV in the MSBr cells with 50% effective concentration (EC50) values of 6.77 μg/mL and 8.02 μg/mL, respectively. Further, mangiferin or taurine hampered the activation of NF-κB1 and the NF-κB1 promoter as well as the increase of phosphorylated NF-κB (p65) protein level induced by MSRV infection, indicating their antiviral mechanism by suppressing NF-κB signaling. These findings exemplify a practice approach, aiming to dampen and redirect inflammatory responses, to develop broad-spectrum antivirals. IMPORTANCE Aquaculture now provides almost half of all fish for human food in 2021 and plays a significant role in eliminating hunger, promoting health, and reducing poverty. There are diverse viral pathogens that decrease production in aquaculture. We developed a novel epithelial cell line derived from the brain of Micropterus salmoides, which can be used for virus isolation, gene expressing, and drug screening. In this study, we focus on M. salmoides rhabdovirus (MSRV) and revealed its pathophysiology of inflammation and oxidative stress. Aiming to dampen and redirect inflammatory responses, mangiferin or taurine exhibited their antiviral capability by suppressing NF-κB signaling. Our findings exemplify a practice approach to develop broad-spectrum antivirals by dampening and redirecting inflammatory responses.
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Affiliation(s)
- Caijiao Dai
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, People’s Republic of China
- National Aquatic Animal Diseases Para-reference laboratory (HZAU), Wuhan, People's Republic of China
| | - Li Yu
- Bureau of Agriculture and Rural Affairs of Xianyou County, Putian, People's Republic of China
| | - Zhiwen Wang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, People’s Republic of China
- National Aquatic Animal Diseases Para-reference laboratory (HZAU), Wuhan, People's Republic of China
| | - Peng Deng
- Wuhan Academy of Agricultural Sciences, Wuhan, People’s Republic of China
| | - Lijuan Li
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, People’s Republic of China
- Hubei Engineering Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, People’s Republic of China
| | - Zemao Gu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, People’s Republic of China
- National Aquatic Animal Diseases Para-reference laboratory (HZAU), Wuhan, People's Republic of China
- Hubei Engineering Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, People’s Republic of China
| | - Xugang He
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, People’s Republic of China
- Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, People’s Republic of China
| | - Jianghua Wang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, People’s Republic of China
- Hubei Engineering Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, People’s Republic of China
| | - Junfa Yuan
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, People’s Republic of China
- National Aquatic Animal Diseases Para-reference laboratory (HZAU), Wuhan, People's Republic of China
- Hubei Engineering Research Center for Aquatic Animal Diseases Control and Prevention, Wuhan, People’s Republic of China
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Liu J, Li W, Yu D, Jin R, Hou H, Ling X, Kiflu AB, Wei X, Yang X, Li X, He Y, Luo TR. Transcriptomic Analysis of mRNA Expression Profiles in the Microglia of Mouse Brains Infected with Rabies Viruses of Varying Virulence. Viruses 2023; 15:1223. [PMID: 37376523 DOI: 10.3390/v15061223] [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: 04/13/2023] [Revised: 05/09/2023] [Accepted: 05/19/2023] [Indexed: 06/29/2023] Open
Abstract
Rabies is a lethal encephalitis caused by the rabies virus (RABV) with a fatality rate near 100% after the onset of clinical symptoms in humans and animals. Microglia are resident immune cells in the central nervous system. Few studies have been conducted on the functional role of microglia in RABV infection. Here, we performed a transcriptomic analysis of mRNA expression profiles in the microglia of mouse brains intracerebrally infected with RABV. We successfully isolated single microglial cells from the mouse brains. The survival rate of dissociated microglial cells was 81.91%-96.7%, and the purity was 88.3%. Transcriptomic analysis revealed 22,079 differentially expressed mRNAs identified in the microglia of mouse brains infected with RABV strains (rRC-HL, GX074, and CVS-24) of varying virulence at 4 and 7 days post-infection (dpi) compared to the control group. The numbers of DEGs versus the control at 4 and 7 dpi in mice infected with rRC-HL, GX074, and CVS-24 were 3622 and 4590, 265 and 4901, and 4079 and 6337. The GO enrichment analysis showed that response to stress, response to external stimulus, regulation of response to stimulus, and immune system process were abundant during RABV infection. The KEGG analysis indicated that the Tlr, Tnf, RIG-I, NOD, NF-κB, MAPK, and Jak-STAT signaling pathways were involved in RABV infection at both 4 and 7 dpi. However, some phagocytosis and cell signal transduction processes, such as endocytosis, p53, phospholipase D, and oxidative phosphorylation signaling pathways, were only expressed at 7 dpi. The involvement of the Tnf and Tlr signaling pathways prompted us to construct a protein-protein interaction (PPI) network of these pathways. The PPI revealed 8 DEGs, including Mmp9, Jun, Pik3r1, and Mapk12. Notably, Il-1b interacted with Tnf and Il-6 with combined scores of 0.973 and 0.981, respectively. RABV causes significant changes in mRNA expression profiles in the microglia in mice. 22,079 differentially expressed mRNAs were identified in the microglia of mice infected with RABV strains of varying virulence at 4 and 7 dpi. The DEGs were evaluated using GO, KEGG, and PPI network analysis. Many immune pathways were up-regulated in RABV-infected groups. The findings will help elucidate the microglial molecular mechanisms of cellular metabolism dysregulated by RABV and may provide important information for investigating RABV pathogenesis and therapeutic methods.
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Affiliation(s)
- Jundan Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
| | - Wangchang Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
| | - Dongling Yu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
| | - Rong Jin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
| | - Hualin Hou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
| | - Xiaoqing Ling
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
| | - Abraha Bahlbi Kiflu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
| | - Xiankai Wei
- Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning 530004, China
| | - Xiaogan Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
| | - Xiaoning Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
| | - Yongming He
- School of Life Science and Engineering, Foshan University, Foshan 528225, China
| | - Ting Rong Luo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530004, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
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Malekpour K, Hazrati A, Soudi S, Roshangar L, Pourfathollah AA, Ahmadi M. Combinational administration of mesenchymal stem cell-derived exosomes and metformin reduces inflammatory responses in an in vitro model of insulin resistance in HepG2 cells. Heliyon 2023; 9:e15489. [PMID: 37153436 PMCID: PMC10160701 DOI: 10.1016/j.heliyon.2023.e15489] [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: 11/19/2022] [Revised: 03/30/2023] [Accepted: 04/11/2023] [Indexed: 05/09/2023] Open
Abstract
Diabetes is a highly common metabolic disorder in advanced societies. One of the causes of diabetes is insulin resistance, which is associated with a loss of sensitivity to insulin-sensitive cells. Insulin resistance develops in the body of a person prone to diabetes many years before diabetes development. Insulin resistance is associated with complications such as hyperglycemia, hyperlipidemia, and compensatory hyperinsulinemia and causes liver inflammation, which, if left untreated, can lead to cirrhosis, fibrosis, and even liver cancer. Metformin is the first line of treatment for patients with diabetes, which lowers blood sugar and increases insulin sensitivity by inhibiting gluconeogenesis in liver cells. The use of metformin has side effects, including a metallic taste in the mouth, vomiting, nausea, diarrhea, and upset stomach. For this reason, other treatments, along with metformin, are being developed. Considering the anti-inflammatory role of mesenchymal stem cells (MSCs) derived exosomes, their use seems to help improve liver tissue function and prevent damage caused by inflammation. This study investigated the anti-inflammatory effect of Wharton's jelly MSCs derived exosomes in combination with metformin in the HepG2 cells insulin resistance model induced by high glucose. This study showed that MSCs derived exosomes as an anti-inflammatory agent in combination with metformin could increase the therapeutic efficacy of metformin without needing to change metformin doses by decreasing inflammatory cytokines production, including IL-1, IL-6, and TNF-α and apoptosis in HepG2 cells.
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Affiliation(s)
- Kosar Malekpour
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ali Hazrati
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Sara Soudi
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Leila Roshangar
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Akbar Pourfathollah
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
- Corresponding author.
| | - Majid Ahmadi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Corresponding author.
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Kim KW, Lee YS, Yoon D, Kim GS, Lee DY. The ethanolic extract of Curcuma longa grown in Korea exhibits anti-neuroinflammatory effects by activating of nuclear transcription factor erythroid-2-related factor 2/heme oxygenase-1 signaling pathway. BMC Complement Med Ther 2022; 22:343. [PMID: 36585647 PMCID: PMC9804997 DOI: 10.1186/s12906-022-03825-5] [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: 09/07/2022] [Accepted: 12/20/2022] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Curcuma longa has been used as spices, food preservative, coloring material, and traditional medicine. This plant also has long been used for a variety of diseases including dyslipidemia, stomach disorders, arthritis, and hepatic diseases. The aim of the present investigation was to examine the anti-neuroinflammatory effects of the 50% ethanolic extract of C. longa in lipopolysaccharide (LPS)-induced BV2 microglial cells. METHODS Griess reaction was employed to measure the production of nitric oxide (NO), and the levels of prostaglandin E2 (PGE2) and pro-inflammatory cytokines such as interleukin 1-beta (IL-1β), IL-6 and tumor necrosis factor-α (TNF-α) were determined by using profit ELISA kits. Western blotting was used to determine the expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), nuclear factor kappa B (NF-κB), mitogen activated protein kinases (MAPKs), heme oxygenase-1 (HO-1) and nuclear factor erythroid-2-related factor 2 (Nrf2). RESULTS Pre-treatment with CLE inhibited the overproduction and overexpression of pro-inflammatory mediators including NO, PGE2, iNOS, COX-2, and pro-inflammatory cytokines such as IL-1β, IL-6 and TNF-α in LPS-induced BV2 cells. In addition, CLE suppressed the activation of the NF-κB and three MAPK signaling pathways. Treatment with CLE induced HO-1 protein expression by activating Nrf2 pathway, and inhibiting the HO-1 expression reversed the anti-inflammatory effect of CLE. CONCLUSION CLE showed anti-neuroinflammatory effects against LPS-induced microglial cells activation through the inhibition of production and expression of pro-inflammatory mediators by negative regulation of the NF-κB and MAPK signaling pathways. These anti-neuroinflammatory effects of CLE were mediated by HO-1/Nrf2 signaling pathway. Taken together, the present study suggests a potent effect of CLE to prevent neuroinflammatory diseases. It is necessary to perform additional efficacy evaluation through in vivo experiments.
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Affiliation(s)
- Kwan-Woo Kim
- grid.420186.90000 0004 0636 2782Department of Herbal Crop Research, National Institute of Horticultural and Herbal Sciences, Rural Development Administration, 27709 Eumseong, Republic of Korea
| | - Young-Seob Lee
- grid.420186.90000 0004 0636 2782Department of Herbal Crop Research, National Institute of Horticultural and Herbal Sciences, Rural Development Administration, 27709 Eumseong, Republic of Korea
| | - Dahye Yoon
- grid.420186.90000 0004 0636 2782Department of Herbal Crop Research, National Institute of Horticultural and Herbal Sciences, Rural Development Administration, 27709 Eumseong, Republic of Korea
| | - Geum-Soog Kim
- grid.420186.90000 0004 0636 2782Department of Herbal Crop Research, National Institute of Horticultural and Herbal Sciences, Rural Development Administration, 27709 Eumseong, Republic of Korea
| | - Dae Young Lee
- grid.420186.90000 0004 0636 2782Department of Herbal Crop Research, National Institute of Horticultural and Herbal Sciences, Rural Development Administration, 27709 Eumseong, Republic of Korea
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10
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Feige L, Kozaki T, Dias de Melo G, Guillemot V, Larrous F, Ginhoux F, Bourhy H. Susceptibilities of CNS Cells towards Rabies Virus Infection Is Linked to Cellular Innate Immune Responses. Viruses 2022; 15:88. [PMID: 36680128 PMCID: PMC9860954 DOI: 10.3390/v15010088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/13/2022] [Accepted: 12/16/2022] [Indexed: 12/31/2022] Open
Abstract
Rabies is caused by neurotropic rabies virus (RABV), contributing to 60,000 human deaths annually. Even though rabies leads to major public health concerns worldwide, we still do not fully understand factors determining RABV tropism and why glial cells are unable to clear RABV from the infected brain. Here, we compare susceptibilities and immune responses of CNS cell types to infection with two RABV strains, Tha and its attenuated variant Th2P-4M, mutated on phospho- (P-protein) and matrix protein (M-protein). We demonstrate that RABV replicates in human stem cell-derived neurons and astrocytes but fails to infect human iPSC-derived microglia. Additionally, we observed major differences in transcription profiles and quantification of intracellular protein levels between antiviral immune responses mediated by neurons, astrocytes (IFNB1, CCL5, CXCL10, IL1B, IL6, and LIF), and microglia (CCL5, CXCL10, ISG15, MX1, and IL6) upon Tha infection. We also show that P- and M-proteins of Tha mediate evasion of NF-κB- and JAK-STAT-controlled antiviral host responses in neuronal cell types in contrast to glial cells, potentially explaining the strong neuron-specific tropism of RABV. Further, Tha-infected astrocytes and microglia protect neurons from Tha infection via a filtrable and transferable agent. Overall, our study provides novel insights into RABV tropism, showing the interest in studying the interplay of CNS cell types during RABV infection.
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Affiliation(s)
- Lena Feige
- Institut Pasteur, Université de Paris, Lyssavirus Epidemiology and Neuropathology, 75015 Paris, France
| | - Tatsuya Kozaki
- Singapore Immunology Network, Agency for Science, Technology and Research, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Guilherme Dias de Melo
- Institut Pasteur, Université de Paris, Lyssavirus Epidemiology and Neuropathology, 75015 Paris, France
| | - Vincent Guillemot
- Hub de Bioinformatique et Biostatistique, Département Biologie Computationnelle, Institut Pasteur, 75015 Paris, France
| | - Florence Larrous
- Institut Pasteur, Université de Paris, Lyssavirus Epidemiology and Neuropathology, 75015 Paris, France
| | - Florent Ginhoux
- Singapore Immunology Network, Agency for Science, Technology and Research, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, 280 South Chongqing Road, Shanghai 200025, China
- Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Center, 20 College Road, Discovery Tower Level 8, Singapore 169856, Singapore
- Inserm U1015, Gustave Roussy, Bâtiment de Médecine Moléculaire, 114 Rue Edouard Vaillant, 94800 Villejuif, France
| | - Hervé Bourhy
- Institut Pasteur, Université de Paris, Lyssavirus Epidemiology and Neuropathology, 75015 Paris, France
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11
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Gao D, Li P, Gao F, Feng Y, Li X, Li D, Li Y, Xiao Y. Preparation and Multitarget Anti-AD Activity Study of Chondroitin Sulfate Lithium in AD Mice Induced by Combination of D-Gal/AlCl 3. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9466166. [PMID: 36411758 PMCID: PMC9675613 DOI: 10.1155/2022/9466166] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 10/25/2022] [Indexed: 09/26/2023]
Abstract
Previous studies have demonstrated that both CS and LiCl possess anti-Alzheimer's disease (AD) activities. We prepared chondroitin sulfate-Li (CS-Li) and investigated its effect on AD and explored the possible mechanisms both in vitro and in vivo. We found that CS-Li could inhibit amyloid β (Aβ) aggregation and protect SH-SY5Y cells from Aβ 1-42-induced cytotoxicity in vitro. In D-gal and AlCl3-induced AD mouse model, CS-Li improves the spatial learning and memory abilities of AD mice, reverses the nuclear pyknosis and cell edema, and increases the survival rate of neurons in hippocampus of mice. Moreover, CS-Li significantly increased the levels of GSH-Px, Na+/K+-ATPase, and ChAT and decreased the levels of MDA and AchE in AD mice. Western blot results demonstrated that CS-Li could decrease the hyperphosphorylation of tau (Ser396/Ser404) by regulating the expression of p-GSK-3β (Ser9) and PP2A and inhibit the expression of proinflammatory factors through inhibiting NF-κB nuclear translocation by activating the MAPK signaling pathways. In a word, CS-Li can delay AD development through multitarget processes, including Aβ aggregation inhibition, oxidative stress damage, tau hyperphosphorylation, and inflammatory response, thereby improves learning and memory abilities.
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Affiliation(s)
- Debo Gao
- Second Affiliated Hospital, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000 Shandong, China
| | - Pingli Li
- Phase I Clinical Trial Center, Qilu Hospital of Shandong University, China
- NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, Shandong University, Jinan 25000, China
| | - Fei Gao
- Taibang Biologic Group Co., Ltd., Taian, 271000 Shandong, China
| | - Yangjun Feng
- Second Affiliated Hospital, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000 Shandong, China
| | - Xiaolin Li
- Second Affiliated Hospital, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000 Shandong, China
| | - Delong Li
- Second Affiliated Hospital, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000 Shandong, China
| | - Yuqin Li
- Second Affiliated Hospital, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000 Shandong, China
| | - Yuliang Xiao
- Second Affiliated Hospital, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271000 Shandong, China
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12
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Sun G, Hou X, Zhang L, Zhang H, Shao C, Li F, Zong C, Li R, Shi J, Yang X, Zhang L. 3,5,3'-Triiodothyronine-Loaded Liposomes Inhibit Hepatocarcinogenesis Via Inflammation-Associated Macrophages. Front Oncol 2022; 12:877982. [PMID: 35646705 PMCID: PMC9135096 DOI: 10.3389/fonc.2022.877982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 04/04/2022] [Indexed: 11/19/2022] Open
Abstract
Background Hepatocellular carcinoma (HCC) is inflammation-related cancer. Persistent inflammatory injury of the liver is an important factor mediating the occurrence and development of liver cancer. Hepatic macrophages play an important role in the inflammatory microenvironment, which mediates tumor immune escape, tumor growth, and metastasis. Previous studies have suggested that L-3,5,3-triiodothyronine (T3) can regulate inflammation; however, its use is associated with serious cardiac side effects, and its role in hepatocarcinogenesis remains unclear. In this study, we aimed to develop an effective T3 delivery system with reduced cardiac toxicity and to explore its effects on HCC occurrence. Methods T3 liposomes (T3-lipo) were prepared using the thin-film hydration method, and their characteristics, including particle size, polydispersity index, zeta potential, encapsulation efficiency, drug loading, drug release, and stability, were evaluated in vitro. We assessed the effect of T3-lipo on hepatocarcinogenesis in diethylnitrosamine (DEN)–induced primary HCC in rats and examined the biodistribution of T3 and T3-lipo by high-performance liquid chromatography–mass spectrometry. Furthermore, we explored the potential molecular mechanism of T3-lipo in hepatocarcinogenesis by immunohistochemistry and immunofluorescence analyses, Bio-Plex assays, real-time polymerase chain reaction analysis, and Western blotting assays. Results Compared with T3, T3-lipo had an enhanced inhibitory effect on hepatocarcinogenesis and reduced cardiac side effects in DEN-induced primary HCC in rats. Mechanistically, T3-lipo were absorbed by hepatic macrophages and regulated the secretion of inflammatory cytokines in macrophages by inhibiting inflammatory signaling pathways. Conclusions T3-lipo may suppress hepatocarcinogenesis by regulating the inflammatory microenvironment in the liver and reduce the cardiac side effects meanwhile.
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Affiliation(s)
- Gangqi Sun
- Department of Clinical Pharmacology, The Second Hospital of Anhui Medical University, Hefei, China.,Department of Phase I Clinical Trial, Clinical Research Unit, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Xiaojuan Hou
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, China.,Department of Tumor Immunity and Metabolism,The National Center for Liver Cancer, Shanghai, China
| | - Luyao Zhang
- Department of Phase I Clinical Trial, Clinical Research Unit, Changhai Hospital, Naval Medical University, Shanghai, China.,School of Pharmacy, Anhui Medical University, Hefei, China
| | - Hengyan Zhang
- Department of Phase I Clinical Trial, Clinical Research Unit, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Changchun Shao
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Fengwei Li
- Department of Hepatobiliary Surgery, Eastern Hepatobiliary Surgery Hospital, Naval Medical University, Shanghai, China
| | - Chen Zong
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, China.,Department of Tumor Immunity and Metabolism,The National Center for Liver Cancer, Shanghai, China
| | - Rong Li
- Laboratory Zone, Eastern Hepatobiliary Clinical Research Institute, Third Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Junxia Shi
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, China.,Department of Tumor Immunity and Metabolism,The National Center for Liver Cancer, Shanghai, China
| | - Xue Yang
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, China.,Department of Tumor Immunity and Metabolism,The National Center for Liver Cancer, Shanghai, China
| | - Li Zhang
- Department of Clinical Pharmacology, The Second Hospital of Anhui Medical University, Hefei, China.,Department of Phase I Clinical Trial, Clinical Research Unit, Changhai Hospital, Naval Medical University, Shanghai, China
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13
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Knobel DL, Jackson AC, Bingham J, Ertl HCJ, Gibson AD, Hughes D, Joubert K, Mani RS, Mohr BJ, Moore SM, Rivett-Carnac H, Tordo N, Yeates JW, Zambelli AB, Rupprecht CE. A One Medicine Mission for an Effective Rabies Therapy. Front Vet Sci 2022; 9:867382. [PMID: 35372555 PMCID: PMC8967983 DOI: 10.3389/fvets.2022.867382] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 02/14/2022] [Indexed: 11/13/2022] Open
Abstract
Despite the disease's long history, little progress has been made toward a treatment for rabies. The prognosis for patient recovery remains dire. For any prospect of survival, patients require aggressive critical care, which physicians in rabies endemic areas may be reluctant or unable to provide given the cost, clinical expertise required, and uncertain outcome. Systematic clinical research into combination therapies is further hampered by sporadic occurrence of cases. In this Perspective, we examine the case for a One Medicine approach to accelerate development of an effective therapy for rabies through the veterinary care and investigational treatment of naturally infected dogs in appropriate circumstances. We review the pathogenesis of rabies virus in humans and dogs, including recent advances in our understanding of the molecular basis for the severe neurological dysfunction. We propose that four categories of disease process need to be managed in patients: viral propagation, neuronal degeneration, inflammation and systemic compromise. Compassionate critical care and investigational treatment of naturally infected dogs receiving supportive therapy that mimics the human clinical scenario could increase opportunities to study combination therapies that address these processes, and to identify biomarkers for prognosis and therapeutic response. We discuss the safety and ethics of this approach, and introduce the Canine Rabies Treatment Initiative, a non-profit organization with the mission to apply a One Medicine approach to the investigation of diagnostic, prognostic, and therapeutic options for rabies in naturally infected dogs, to accelerate transformation of rabies into a treatable disease for all patients.
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Affiliation(s)
- Darryn L. Knobel
- Department of Biomedical Sciences, Ross University School of Veterinary Medicine, Basseterre, Saint Kitts and Nevis
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
- Canine Rabies Treatment Initiative, Salt Rock, South Africa
| | - Alan C. Jackson
- Department of Medicine, Northern Consultation Centre, Thompson General Hospital, Thompson, MB, Canada
- Department of Medicine, Lake of the Woods District Hospital, Kenora, ON, Canada
| | - John Bingham
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Australian Animal Health Laboratory at the Australian Centre for Disease Preparedness, Geelong, VIC, Australia
| | | | - Andrew D. Gibson
- Division of Genetics and Genomics, Easter Bush Veterinary Centre, The Roslin Institute and the Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Roslin, United Kingdom
| | - Daniela Hughes
- Canine Rabies Treatment Initiative, Salt Rock, South Africa
| | - Kenneth Joubert
- Veterinary Anaesthesia, Analgesia and Critical Care Services, Lonehill, South Africa
| | - Reeta S. Mani
- Department of Neurovirology, WHO Collaborating Centre for Reference and Research in Rabies, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Bert J. Mohr
- Canine Rabies Treatment Initiative, Salt Rock, South Africa
- Centre for Animal Research, Faculty of Health Sciences, University of Cape Town, Observatory, South Africa
| | - Susan M. Moore
- Veterinary Medical Diagnostic Laboratory, University of Missouri, Columbia, MO, United States
| | | | - Noël Tordo
- Institut Pasteur de Guinée, Conakry, Guinea
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14
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Comprehensive analysis of protein acetylation and glucose metabolism inmouse brains infected with rabies virus. J Virol 2021; 96:e0194221. [PMID: 34878915 DOI: 10.1128/jvi.01942-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Rabies, caused by rabies virus (RABV), is a widespread zoonosis that is nearly 100% fatal. Alteration of the metabolic environment affects viral replication and the immune response during viral infection. In this study, glucose uptake was increased in mouse brains at the late stage of infection with different RABV strains (lab-attenuated CVS strain and wild-type DRV strain). To illustrate the mechanism underlying glucose metabolism alteration, comprehensive analysis of lysine acetylation and target analysis of energy metabolites in mouse brains infected with CVS and DRV strains were performed. A total of 156 acetylated sites and 115 acetylated proteins were identified as significantly different during RABV infection. Compared to CVS- and mock-infected mice, the lysine acetylation levels of glycolysis and tricarboxylic acid (TCA) cycle enzymes were decreased, and enzyme activity was upregulated in DRV-infected mouse brains. Metabolomic analysis revealed that high levels of oxaloacetate (OAA) in RABV-infected mouse brains. Specifically, the OAA level in CVS-infected mouse brains was higher than that in DRV-infected mouse brains, which contributed to the enhancement of the metabolic rate at the substrate level. Finally, we confirmed that OAA could reduce excessive neuroinflammation in CVS-infected mouse brains by inhibiting JNK and P38 phosphorylation. Taken together, this study provides fresh insight into the different strategies the host adapts to regulate glucose metabolism for energy requirements after different RABV strain infection and suggest that OAA treatment could be a potential strategy to prevent neural damage during RABV infection. IMPORTANCE Both viral replication and the host immune response are highly energy-dependent. It is important to understand how the rabies virus affects energy metabolism in the brain. Glucose is the direct energy source for cell metabolism. Previous studies have revealed that there is some association between acetylation and metabolic processes. In this study, comprehensive protein acetylation and glucose metabolism analysis were conducted to compare glucose metabolism in mouse brains infected with different RABV strains. Our study demonstrates that the regulation of enzyme activity by acetylation and OAA accumulation at the substrate level are two strategies for the host to respond to the energy requirements after RABV infection. Our study also indicates the potential role OAA could play in neuronal protection by suppressing excessive neuroinflammation.
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15
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Feige L, Zaeck LM, Sehl-Ewert J, Finke S, Bourhy H. Innate Immune Signaling and Role of Glial Cells in Herpes Simplex Virus- and Rabies Virus-Induced Encephalitis. Viruses 2021; 13:2364. [PMID: 34960633 PMCID: PMC8708193 DOI: 10.3390/v13122364] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/12/2021] [Accepted: 11/18/2021] [Indexed: 12/19/2022] Open
Abstract
The environment of the central nervous system (CNS) represents a double-edged sword in the context of viral infections. On the one hand, the infectious route for viral pathogens is restricted via neuroprotective barriers; on the other hand, viruses benefit from the immunologically quiescent neural environment after CNS entry. Both the herpes simplex virus (HSV) and the rabies virus (RABV) bypass the neuroprotective blood-brain barrier (BBB) and successfully enter the CNS parenchyma via nerve endings. Despite the differences in the molecular nature of both viruses, each virus uses retrograde transport along peripheral nerves to reach the human CNS. Once inside the CNS parenchyma, HSV infection results in severe acute inflammation, necrosis, and hemorrhaging, while RABV preserves the intact neuronal network by inhibiting apoptosis and limiting inflammation. During RABV neuroinvasion, surveilling glial cells fail to generate a sufficient type I interferon (IFN) response, enabling RABV to replicate undetected, ultimately leading to its fatal outcome. To date, we do not fully understand the molecular mechanisms underlying the activation or suppression of the host inflammatory responses of surveilling glial cells, which present important pathways shaping viral pathogenesis and clinical outcome in viral encephalitis. Here, we compare the innate immune responses of glial cells in RABV- and HSV-infected CNS, highlighting different viral strategies of neuroprotection or Neuroinflamm. in the context of viral encephalitis.
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Affiliation(s)
- Lena Feige
- Institut Pasteur, Université de Paris, Lyssavirus Epidemiology and Neuropathology, 28 Rue Du Docteur Roux, 75015 Paris, France;
| | - Luca M. Zaeck
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut (FLI), Federal Institute of Animal Health, Südufer 10, 17493 Greifswald-Insel Riems, Germany; (L.M.Z.); (S.F.)
| | - Julia Sehl-Ewert
- Department of Experimental Animal Facilities and Biorisk Management, Friedrich-Loeffler-Institut (FLI), Federal Institute of Animal Health, Südufer 10, 17493 Greifswald-Insel Riems, Germany;
| | - Stefan Finke
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut (FLI), Federal Institute of Animal Health, Südufer 10, 17493 Greifswald-Insel Riems, Germany; (L.M.Z.); (S.F.)
| | - Hervé Bourhy
- Institut Pasteur, Université de Paris, Lyssavirus Epidemiology and Neuropathology, 28 Rue Du Docteur Roux, 75015 Paris, France;
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Roh SS, Lee J, Shin MR, Park HJ. Comparison of Esophageal Mucosa Protective Efficacy of Evodiae Fructus and Toosendan Fructus against Duodenogastroesophageal Reflux Esophagitis. Pharmacogn Mag 2021. [DOI: 10.4103/pm.pm_277_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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