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Dang Y, Wang Y, Wei J, Zhang H, Yang Q, Wang B, Li J, Ye C, Chen Y, Han P, Jin X, Wang J, Bao X, Liu H, Ma H, Zhang L, Cheng L, Dong Y, Bai Y, Li Y, Lei Y, Xu Z, Zhang F, Ye W. 25-Hydroxycholesterol inhibits Hantavirus infection by reprogramming cholesterol metabolism. Free Radic Biol Med 2024; 224:S0891-5849(24)00623-3. [PMID: 39209137 DOI: 10.1016/j.freeradbiomed.2024.08.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 08/12/2024] [Accepted: 08/23/2024] [Indexed: 09/04/2024]
Abstract
Hantavirus causes two types of acute diseases: hemorrhagic fever with renal syndrome and hantavirus pulmonary syndrome. It is a major health concern due to its high mortality and lack of effective treatment. Type I interferon treatment has been suggested to be effective against hantavirus when treated in advance. Interferons induce multiple interferon-stimulated genes (ISGs), whose products are highly effective at resisting and controlling viruses. A product of ISGs, the enzyme cholesterol 25-hydroxylase (CH25H), catalyzes the oxidation of cholesterol to 25-hydroxycholesterol (25HC). 25HC can inhibit multiple enveloped-virus infections, but the mechanism is largely unknown, and whether 25HC plays an important role in regulating hantavirus remains unexplored. In this study, we show that Hantaan virus (HTNV), the prototype hantavirus, induced CH25H gene in infected cells. Overexpression of CH25H and treatment with 25HC, inhibited HTNV infection, possibly by lowering 3-hydroxy-3-methyl-glutaryl coenzyme A reductase (HMG-CoA reductase, HMGCR), which inhibits cholesterol biosynthesis. In addition, cholesterol-lowering drugs such as HMGCR-targeting statins have potent hantavirus inhibitory effects. Our results indicate that 25HC and some statins are potential antiviral agents effective against hantavirus infections. This study provides evidence that targeting cholesterol metabolism is promising in developing specific hantavirus antivirals and indicates the possibility of repurposing FDA-approved cholesterol-lowering drug, statins for treating hantavirus infection.
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Affiliation(s)
- Yamei Dang
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Yuan Wang
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Jing Wei
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China; Center for Disease Control and Prevention of Shaanxi Province, Xi'an, Shaanxi, China
| | - Hui Zhang
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Qiqi Yang
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Bin Wang
- Center of Clinical Aerospace Medicine, School of Aerospace Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, China
| | - Jia Li
- Department of Neurology, Xi'an International Medical Center Hospital, Xi'an, Shaanxi 710100, China
| | - Chuantao Ye
- Department of Infectious Diseases, Tangdu Hospital, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Yang Chen
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Peijun Han
- Department of Aerospace Hygiene, School of Aerospace Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, China
| | - Xiaolei Jin
- Cadet Brigade, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an 710032, China
| | - Jia Wang
- Cadet Brigade, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an 710032, China
| | - Xiaohui Bao
- Cadet Brigade, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an 710032, China
| | - He Liu
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Hongwei Ma
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Liang Zhang
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Linfeng Cheng
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Yangchao Dong
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Yinlan Bai
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Yinghui Li
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Yingfeng Lei
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China.
| | - Zhikai Xu
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China.
| | - Fanglin Zhang
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China.
| | - Wei Ye
- Department of Microbiology, School of Preclinical Medicine, Airforce Medical University: Fourth Military Medical University, Xi'an, Shaanxi 710032, China.
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Cong S, Fu Y, Zhao X, Guo Q, Liang T, Wu D, Wang J, Zhang G. KIF26B and CREB3L1 Derived from Immunoscore Could Inhibit the Progression of Ovarian Cancer. J Immunol Res 2024; 2024:4817924. [PMID: 38380081 PMCID: PMC10878761 DOI: 10.1155/2024/4817924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/07/2024] [Accepted: 01/28/2024] [Indexed: 02/22/2024] Open
Abstract
Background Ovarian cancer (OV) is characteristic of high incidence rate and fatality rate in the malignant tumors of female reproductive system. Researches on pathogenesis and therapeutic targets for OV need to be continued. This study mainly analyzed the immune-related pathogenesis and discovered the key immunotherapy targets for OV. Methods WGCNA was used for excavating hub gene modules and hub genes related to the immunity of OV. Enrichment analysis was aimed to analyze the related pathways of hub gene modules. Biological experiments were used for exploring the effect of hub genes on SKOV3 cells. Results We identified two hub gene modules related to the immunoscore of OV and found that these genes in the modules were related to the extracellular matrix and viral infections. At the same time, we also discovered six hub genes related to the immunity of OV. Among them, KIF26B and CREB3L1 can affect the proliferation, migration, and invasion of SKOV3 cells by the Wnt/β-catenin pathway. Conclusions The local infection or inflammation of ovarian may affect the immunity of OV. KIF26B and CREB3L1 are expected to be potential targets for the immunotherapy of OV.
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Affiliation(s)
- Shanshan Cong
- Department of Gynecology, Affiliated Women's Hospital of Jiangnan University, Wuxi, China
| | - Yao Fu
- Department of Pharmacy, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China
| | - Xibo Zhao
- Department of Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Qiuyan Guo
- Department of Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Tian Liang
- Department of Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Di Wu
- Department of Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jing Wang
- Department of Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Guangmei Zhang
- Department of Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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Ma H, Yang Y, Nie T, Yan R, Si Y, Wei J, Li M, Liu H, Ye W, Zhang H, Cheng L, Zhang L, Lv X, Luo L, Xu Z, Zhang X, Lei Y, Zhang F. Disparate macrophage responses are linked to infection outcome of Hantan virus in humans or rodents. Nat Commun 2024; 15:438. [PMID: 38200007 PMCID: PMC10781751 DOI: 10.1038/s41467-024-44687-4] [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: 12/17/2021] [Accepted: 12/29/2023] [Indexed: 01/12/2024] Open
Abstract
Hantaan virus (HTNV) is asymptomatically carried by rodents, yet causes lethal hemorrhagic fever with renal syndrome in humans, the underlying mechanisms of which remain to be elucidated. Here, we show that differential macrophage responses may determine disparate infection outcomes. In mice, late-phase inactivation of inflammatory macrophage prevents cytokine storm syndrome that usually occurs in HTNV-infected patients. This is attained by elaborate crosstalk between Notch and NF-κB pathways. Mechanistically, Notch receptors activated by HTNV enhance NF-κB signaling by recruiting IKKβ and p65, promoting inflammatory macrophage polarization in both species. However, in mice rather than humans, Notch-mediated inflammation is timely restrained by a series of murine-specific long noncoding RNAs transcribed by the Notch pathway in a negative feedback manner. Among them, the lnc-ip65 detaches p65 from the Notch receptor and inhibits p65 phosphorylation, rewiring macrophages from the pro-inflammation to the pro-resolution phenotype. Genetic ablation of lnc-ip65 leads to destructive HTNV infection in mice. Thus, our findings reveal an immune-braking function of murine noncoding RNAs, offering a special therapeutic strategy for HTNV infection.
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Affiliation(s)
- Hongwei Ma
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
- Department of Anaesthesiology & Critical Care Medicine, Xijing Hospital, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
| | - Yongheng Yang
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
| | - Tiejian Nie
- Department of Experimental Surgery, Tangdu Hospital, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710038, China
| | - Rong Yan
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
| | - Yue Si
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
| | - Jing Wei
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
- Shaanxi Provincial Centre for Disease Control and Prevention, Xi'an, Shaanxi, 710054, China
| | - Mengyun Li
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
| | - He Liu
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
| | - Wei Ye
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
| | - Hui Zhang
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
| | - Linfeng Cheng
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
| | - Liang Zhang
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
| | - Xin Lv
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China
| | - Limin Luo
- Department of Infectious Disease, Air Force Hospital of Southern Theatre Command, Guangzhou, Guangdong, 510602, China
| | - Zhikai Xu
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China.
| | - Xijing Zhang
- Department of Anaesthesiology & Critical Care Medicine, Xijing Hospital, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China.
| | - Yingfeng Lei
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China.
| | - Fanglin Zhang
- Department of Microbiology & Pathogen Biology, School of Basic Medical Sciences, Air Force Medical University (the Fourth Military Medical University), Xi'an, Shaanxi, 710032, China.
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4
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Nusshag C, Schreiber P, Uhrig J, Zeier M, Krautkrämer E. In-cell Western assay to quantify infection with pathogenic orthohantavirus Puumala virus in replication kinetics and antiviral drug testing. Virus Res 2023; 337:199230. [PMID: 37777116 PMCID: PMC10590686 DOI: 10.1016/j.virusres.2023.199230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/02/2023]
Abstract
Hemorrhagic fever with renal syndrome (HFRS) represents a serious zoonotic disease caused by orthohantaviruses in Eurasia. A specific antiviral therapy is not available. HFRS is characterized by acute kidney injury (AKI) with often massive proteinuria. Infection of kidney cells may contribute to the clinical picture. However, orthohantaviral replication in kidney cells is not well characterized. Therefore, we aimed to perform a reliable high-throughput assay that allows the quantification of infection rates and testing of antiviral compounds in different cell types. We quantified relative infection rates of Eurasian pathogenic Puumala virus (PUUV) by staining of nucleocapsid protein (N protein) in an in-cell Western (ICW) assay. Vero E6 cells, derived from the African green monkey and commonly used in viral cell culture studies, and the human podocyte cell line CIHP (conditionally immortalized human podocytes) were used to test the ICW assay for replication kinetics and antiviral drug testing. Quantification of infection by ICW revealed reliable results for both cell types, as shown by their correlation with immunofluorescence quantification results by counting infected cells. Evaluation of antiviral efficacy of ribavirin by ICW assay revealed differences in the toxicity (TC) and inhibitory concentrations (IC) between Vero E6 cells and podocytes. IC5O of ribavirin in podocytes is about 12-fold lower than in Vero E6 cells. In summary, ICW assay together with relevant human target cells represents an important tool for the study of hantaviral replication and drug testing.
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Affiliation(s)
- Christian Nusshag
- Department of Nephrology, University of Heidelberg, Im Neuenheimer Feld 162, Heidelberg 69120, Germany
| | - Pamela Schreiber
- Department of Nephrology, University of Heidelberg, Im Neuenheimer Feld 162, Heidelberg 69120, Germany
| | - Josephine Uhrig
- Department of Nephrology, University of Heidelberg, Im Neuenheimer Feld 162, Heidelberg 69120, Germany
| | - Martin Zeier
- Department of Nephrology, University of Heidelberg, Im Neuenheimer Feld 162, Heidelberg 69120, Germany
| | - Ellen Krautkrämer
- Department of Nephrology, University of Heidelberg, Im Neuenheimer Feld 162, Heidelberg 69120, Germany.
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5
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Si Y, Zhang H, Zhou Z, Zhu X, Yang Y, Liu H, Zhang L, Cheng L, Wang K, Ye W, Lv X, Zhang X, Hou W, Zhao G, Lei Y, Zhang F, Ma H. RIPK3 promotes hantaviral replication by restricting JAK-STAT signaling without triggering necroptosis. Virol Sin 2023; 38:741-754. [PMID: 37633447 PMCID: PMC10590702 DOI: 10.1016/j.virs.2023.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 08/21/2023] [Indexed: 08/28/2023] Open
Abstract
Hantaan virus (HTNV) is a rodent-borne virus that causes hemorrhagic fever with renal syndrome (HFRS), resulting in a high mortality rate of 15%. Interferons (IFNs) play a critical role in the anti-hantaviral immune response, and IFN pretreatment efficiently restricts HTNV infection by triggering the expression of a series of IFN-stimulated genes (ISGs) through the Janus kinase-signal transducer and activator of transcription 1 (JAK-STAT) pathway. However, the tremendous amount of IFNs produced during late infection could not restrain HTNV replication, and the mechanism remains unclear. Here, we demonstrated that receptor-interacting protein kinase 3 (RIPK3), a crucial molecule that mediates necroptosis, was activated by HTNV and contributed to hantavirus evasion of IFN responses by inhibiting STAT1 phosphorylation. RNA-seq analysis revealed the upregulation of multiple cell death-related genes after HTNV infection, with RIPK3 identified as a key modulator of viral replication. RIPK3 ablation significantly enhanced ISGs expression and restrained HTNV replication, without affecting the expression of pattern recognition receptors (PRRs) or the production of type I IFNs. Conversely, exogenously expressed RIPK3 compromised the host's antiviral response and facilitated HTNV replication. RIPK3-/- mice also maintained a robust ability to clear HTNV with enhanced innate immune responses. Mechanistically, we found that RIPK3 could bind STAT1 and inhibit STAT1 phosphorylation dependent on the protein kinase domain (PKD) of RIPK3 but not its kinase activity. Overall, these observations demonstrated a noncanonical function of RIPK3 during viral infection and have elucidated a novel host innate immunity evasion strategy utilized by HTNV.
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Affiliation(s)
- Yue Si
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China
| | - Haijun Zhang
- Department of Neurology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China; Center of Clinical Aerospace Medicine, School of Aerospace Medicine, Key Laboratory of Aerospace Medicine of Ministry of Education, Air Force Medical University, Xi'an, 710032, China
| | - Ziqing Zhou
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China
| | - Xudong Zhu
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China
| | - Yongheng Yang
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China
| | - He Liu
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China
| | - Liang Zhang
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China
| | - Linfeng Cheng
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China
| | - Kerong Wang
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China
| | - Wei Ye
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China
| | - Xin Lv
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China
| | - Xijing Zhang
- Department of Anesthesiology & Critical Care Medicine, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Wugang Hou
- Department of Anesthesiology & Critical Care Medicine, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Gang Zhao
- Department of Neurology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China; The College of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China
| | - Yingfeng Lei
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China.
| | - Fanglin Zhang
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China.
| | - Hongwei Ma
- Department of Microbiology, School of Basic Medicine, Air Force Medical University, Xi'an, 710032, China; Department of Anesthesiology & Critical Care Medicine, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China.
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6
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Lai T, Su X, Chen E, Tao Y, Zhang S, Wang L, Mao Y, Hu H. The DEAD-box RNA helicase, DDX60, Suppresses immunotherapy and promotes malignant progression of pancreatic cancer. Biochem Biophys Rep 2023; 34:101488. [PMID: 37274827 PMCID: PMC10236181 DOI: 10.1016/j.bbrep.2023.101488] [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: 03/30/2023] [Revised: 05/14/2023] [Accepted: 05/19/2023] [Indexed: 06/07/2023] Open
Abstract
Excessive proliferation, invasion, metastasis, and immune resistance in pancreatic cancer (PC) makes it one of the most lethal malignant tumors. Recently, DDX60 was found to be involved in the development of various tumors and in immunotherapy. Therefore, we aimed to investigate whether DDX60 is a new factor involved in PC immunotherapy. The DDX60 mRNA was screened using transcriptome sequencing (RNA-seq). The Cox and survival analysis of DDX60 was performed using the Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) databases. In addition, clinical and immune infiltration data in the databases were analyzed and plotted using the R language. Clinical samples and in vitro experiments were used to determine the molecular evolution of DDX60 during PC progression. We found that DDX60 was upregulated in PC tissues (P value = 0.0083) and was associated with poor prognosis and short survival time of patients with PC. Results of Gene Ontology, Kyoto Encyclopedia of Genes and Genomes, and gene set variation analyses showed that viral defense, tumor, and immune-related pathways were significantly enriched in samples with high DDX60 expression. The Pearson correlation test demonstrated that DDX60 expression correlated strongly with immune checkpoint and immune system-related metagene clusters. Our results indicated that DDX60 promoted cell proliferation, migration, and invasion and was related to poor prognosis and immune resistance. Therefore, DDX60 may be a promising novel target for PC immunotherapy.
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Affiliation(s)
- Tiantian Lai
- Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
- Wuxi Medical College, Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Xiaowen Su
- Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
- Wuxi Medical College, Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Enhong Chen
- Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Yue Tao
- Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
- Wuxi Medical College, Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Shuo Zhang
- Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
- Wuxi Medical College, Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Leisheng Wang
- Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
- Wuxi Medical College, Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Yong Mao
- Medical oncology, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Hao Hu
- Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
- Wuxi Medical College, Jiangnan University, Wuxi, 214122, Jiangsu Province, China
- Hepatobiliary and Pancreatic Surgery, the Third Hospital Affiliated to Nantong University, Wuxi, 214041, China
- Medical School, Nantong University, Nantong, 226001, China
- Wuxi Institute of Hepatobiliary Surgery, Wuxi, 214122, China
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7
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Shrivastava-Ranjan P, Jain S, Chatterjee P, Montgomery JM, Flint M, Albariño C, Spiropoulou CF. Development of a novel minigenome and recombinant VSV expressing Seoul hantavirus glycoprotein-based assays to identify anti-hantavirus therapeutics. Antiviral Res 2023; 214:105619. [PMID: 37142192 DOI: 10.1016/j.antiviral.2023.105619] [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: 01/19/2023] [Revised: 04/24/2023] [Accepted: 04/27/2023] [Indexed: 05/06/2023]
Abstract
Seoul virus (SEOV) is an emerging global health threat that can cause hemorrhagic fever with renal syndrome (HFRS), which results in case fatality rates of ∼2%. There are no approved treatments for SEOV infections. We developed a cell-based assay system to identify potential antiviral compounds for SEOV and generated additional assays to characterize the mode of action of any promising antivirals. To test if candidate antivirals targeted SEOV glycoprotein-mediated entry, we developed a recombinant reporter vesicular stomatitis virus expressing SEOV glycoproteins. To facilitate the identification of candidate antiviral compounds targeting viral transcription/replication, we successfully generated the first reported minigenome system for SEOV. This SEOV minigenome (SEOV-MG) screening assay will also serve as a prototype assay for discovery of small molecules inhibiting replication of other hantaviruses, including Andes and Sin Nombre viruses. Ours is a proof-of-concept study in which we tested several compounds previously reported to have activity against other negative-strand RNA viruses using our newly developed hantavirus antiviral screening systems. These systems can be used under lower biocontainment conditions than those needed for infectious viruses, and identified several compounds with robust anti-SEOV activity. Our findings have important implications for the development of anti-hantavirus therapeutics.
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Affiliation(s)
- Punya Shrivastava-Ranjan
- Viral Special Pathogens Branch, Division of High Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Shilpi Jain
- Viral Special Pathogens Branch, Division of High Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Payel Chatterjee
- Viral Special Pathogens Branch, Division of High Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Joel M Montgomery
- Viral Special Pathogens Branch, Division of High Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Mike Flint
- Viral Special Pathogens Branch, Division of High Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - César Albariño
- Viral Special Pathogens Branch, Division of High Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Christina F Spiropoulou
- Viral Special Pathogens Branch, Division of High Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA.
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8
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Lu LD, Salvino JM. The In-Cell Western immunofluorescence assay to monitor PROTAC mediated protein degradation. Methods Enzymol 2023; 681:115-153. [PMID: 36764754 DOI: 10.1016/bs.mie.2022.08.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The In-Cell Western plate-based immunofluorescence assay is a useful methodology for monitoring protein levels and provides a facile moderate through-put method for PROTAC and degrader optimization. The method is compared to other reported assays used for PROTAC development. The advantages of this method are the greater through-put compared to Western blots due to its plate-based method and the ease to transfer between cells lines. Adherent cell lines are preferred, although suspension cells can be used following recommended modifications and precautions to the protocol. This method requires a high-quality antibody that recognizes the protein epitope in its cellular context, and in general provides data similar to Western blots with higher assay through-put.
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Affiliation(s)
- Lily D Lu
- Molecular Screening and Protein Expression Facility, The Wistar Institute, Philadelphia, PA, United States
| | - Joseph M Salvino
- Molecular Screening and Protein Expression Facility, The Wistar Institute, Philadelphia, PA, United States; Medicinal Chemistry, The Wistar Institute, Philadelphia, PA, United States; Program in Molecular and Cellular Oncogenesis, The Wistar Institute, Philadelphia, PA, United States.
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9
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Wang J, Li J. In-Cell Western Assay in Ferroptosis. Methods Mol Biol 2023; 2712:157-163. [PMID: 37578704 DOI: 10.1007/978-1-0716-3433-2_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Ferroptosis is a regulated form of cell death caused by the excessive accumulation of iron-dependent lipid peroxidation. It has been implicated in various pathological processes and diseases, and its modulation involves multiple proteins associated with iron and lipid metabolism. To better understand these mechanisms and monitor the ferroptosis process, there is a need for reliable and high-throughput methods to evaluate variations in protein expression levels. In-Cell Western assays provide a simple and rapid assay method for detecting biomarkers and signaling proteins in whole cells using antibodies. This assay involves seeding cells in microtiter plates, followed by fixation/permeabilization and subsequent labeling with primary antibodies and infrared-conjugated secondary antibodies. In this chapter, we introduce the protocol for the In-Cell Western assay for detecting intracellular proteins during ferroptosis.
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Affiliation(s)
- Jiayi Wang
- The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jingbo Li
- The Third Xiangya Hospital, Central South University, Changsha, China.
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10
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Sadic M, Schneider WM, Katsara O, Medina GN, Fisher A, Mogulothu A, Yu Y, Gu M, de los Santos T, Schneider RJ, Dittmann M. DDX60 selectively reduces translation off viral type II internal ribosome entry sites. EMBO Rep 2022; 23:e55218. [PMID: 36256515 PMCID: PMC9724679 DOI: 10.15252/embr.202255218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 09/07/2022] [Accepted: 09/15/2022] [Indexed: 11/05/2022] Open
Abstract
Co-opting host cell protein synthesis is a hallmark of many virus infections. In response, certain host defense proteins limit mRNA translation globally, albeit at the cost of the host cell's own protein synthesis. Here, we describe an interferon-stimulated helicase, DDX60, that decreases translation from viral internal ribosome entry sites (IRESs). DDX60 acts selectively on type II IRESs of encephalomyocarditis virus (EMCV) and foot and mouth disease virus (FMDV), but not by other IRES types or by 5' cap. Correspondingly, DDX60 reduces EMCV and FMDV (type II IRES) replication, but not that of poliovirus or bovine enterovirus 1 (BEV-1; type I IRES). Furthermore, replacing the IRES of poliovirus with a type II IRES is sufficient for DDX60 to inhibit viral replication. Finally, DDX60 selectively modulates the amount of translating ribosomes on viral and in vitro transcribed type II IRES mRNAs, but not 5' capped mRNA. Our study identifies a novel facet in the repertoire of interferon-stimulated effector genes, the selective downregulation of translation from viral type II IRES elements.
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Affiliation(s)
| | | | | | - Gisselle N Medina
- Plum Island Animal Disease Center, ARSUSDAGreenportNYUSA,National Bio and Agro‐Defense Facility (NBAF), ARSUSDAManhattanKSUSA
| | | | - Aishwarya Mogulothu
- Plum Island Animal Disease Center, ARSUSDAGreenportNYUSA,Department of Pathobiology and Veterinary ScienceUniversity of ConnecticutStorrsCTUSA
| | - Yingpu Yu
- The Rockefeller UniversityNew YorkNYUSA
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11
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Li Z, Wang F, Ying Q, Kong D, Zhang X, Dong Y, Liu Y, Zhai D, Chen Z, Jia M, Xue X, Li M, Wu X. In vitro Anti-Hantavirus Activity of Protein Kinase Inhibitor 8G1 Targeting AKT/mTOR/eIF4E Signaling Pathway. Front Microbiol 2022; 13:880258. [PMID: 35847100 PMCID: PMC9279581 DOI: 10.3389/fmicb.2022.880258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 06/02/2022] [Indexed: 11/18/2022] Open
Abstract
Hantaan virus (HTNV) is the main cause of hemorrhagic fever with renal syndrome (HFRS) around the world, which results in profound morbidity and mortality. However, there are currently no FDA-approved therapeutics or vaccines against HFRS. To find new anti-HTNV drugs, the inhibitory activity of 901 small molecule kinase inhibitors against HTNV is analyzed. Among these compounds, compound 8G1 inhibits HTNV with a relatively high inhibition rate and lower toxicity. The viral titer and nucleocapsid protein of HTNV are reduced after compound 8G1 treatment in a dose-dependent manner at concentrations ranging from 1 to 20 μM. In addition, the administration of compound 8G1 at the early stage of HTNV infection can inhibit the replication of HTNV. The molecular docking result reveals that compound 8G1 forms interactions with the key amino acid residues of serine/threonine-protein kinase B (Akt), which is responsible for the observed affinity. Then, the mammalian target of rapamycin (mTOR) and eukaryotic translation initiation factor 4E (eIF4E) signaling pathways are inhibited. Our results may help to design novel targets for therapeutic intervention against HTNV infection and to understand the anti-HTNV mechanism of protein kinase inhibitors.
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Affiliation(s)
- Zhoupeng Li
- Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
| | - Fang Wang
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Qikang Ying
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Dehui Kong
- School of Nursing, Army Medical University, Third Military Medical University, Chongqing, China
| | - Xiaoxiao Zhang
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Yuhang Dong
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Yongsheng Liu
- Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
| | - Dongsheng Zhai
- Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
| | - Zhou Chen
- Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
| | - Min Jia
- Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
| | - Xiaoyan Xue
- Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
| | - Mingkai Li
- Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
- Precision Pharmacy and Drug Development Center, The Fourth Military Medical University, Xi'an, China
- Mingkai Li
| | - Xingan Wu
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
- *Correspondence: Xingan Wu
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12
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Yang Y, Li M, Ma Y, Ye W, Si Y, Zheng X, Liu H, Cheng L, Zhang L, Zhang H, Zhang X, Lei Y, Shen L, Zhang F, Ma H. LncRNA NEAT1 Potentiates SREBP2 Activity to Promote Inflammatory Macrophage Activation and Limit Hantaan Virus Propagation. Front Microbiol 2022; 13:849020. [PMID: 35495674 PMCID: PMC9044491 DOI: 10.3389/fmicb.2022.849020] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 03/10/2022] [Indexed: 11/17/2022] Open
Abstract
As the global prototypical zoonotic hantavirus, Hantaan virus (HTNV) is prevalent in Asia and is the leading causative agent of severe hemorrhagic fever with renal syndrome (HFRS), which has profound morbidity and mortality. Macrophages are crucial components of the host innate immune system and serve as the first line of defense against HTNV infection. Previous studies indicated that the viral replication efficiency in macrophages determines hantavirus pathogenicity, but it remains unknown which factor manipulates the macrophage activation pattern and the virus-host interaction process. Here, we performed the transcriptomic analysis of HTNV-infected mouse bone marrow-derived macrophages and identified the long noncoding RNA (lncRNA) nuclear enriched abundant transcript 1 (NEAT1), especially the isoform NEAT1-2, as one of the lncRNAs that is differentially expressed at the early phase. Based on coculture experiments, we revealed that silencing NEAT1-2 hinders inflammatory macrophage activation and facilitates HTNV propagation, while enhancing NEAT1-2 transcription effectively restrains viral replication. Furthermore, sterol response element binding factor-2 (SREBP2), which controls the cholesterol metabolism process, was found to stimulate macrophages by promoting the production of multiple inflammatory cytokines upon HTNV infection. NEAT1-2 could potentiate SREBP2 activity by upregulating Srebf1 expression and interacting with SREBP2, thus stimulating inflammatory macrophages and limiting HTNV propagation. More importantly, we demonstrated that the NEAT1-2 expression level in patient monocytes was negatively correlated with viral load and HFRS disease progression. Our results identified a function and mechanism of action for the lncRNA NEAT1 in heightening SREBP2-mediated macrophage activation to restrain hantaviral propagation and revealed the association of NEAT1 with HFRS severity.
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Affiliation(s)
- Yongheng Yang
- College of Life Sciences, Northwest University, Xi'an, China.,Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Mengyun Li
- College of Life Sciences, Northwest University, Xi'an, China.,Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Yongtao Ma
- Department of Emergency, Children's Hospital of Kaifeng City, Kaifeng, China
| | - Wei Ye
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Yue Si
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Xuyang Zheng
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China.,Department of Infectious Diseases, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - He Liu
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Linfeng Cheng
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Liang Zhang
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Hui Zhang
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Xijing Zhang
- Department of Anesthesiology and Critical Care Medicine, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yingfeng Lei
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Lixin Shen
- College of Life Sciences, Northwest University, Xi'an, China
| | - Fanglin Zhang
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Hongwei Ma
- Department of Microbiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China.,Department of Anesthesiology and Critical Care Medicine, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
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13
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Li J, Wang D, Fang P, Pang Y, Zhou Y, Fang L, Xiao S. DEAD-Box RNA Helicase 21 (DDX21) Positively Regulates the Replication of Porcine Reproductive and Respiratory Syndrome Virus via Multiple Mechanisms. Viruses 2022; 14:v14030467. [PMID: 35336874 PMCID: PMC8949431 DOI: 10.3390/v14030467] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 02/21/2022] [Accepted: 02/23/2022] [Indexed: 11/16/2022] Open
Abstract
The porcine reproductive and respiratory syndrome virus (PRRSV) remains a persistent hazard in the global pig industry. DEAD (Glu-Asp-Ala-Glu) box helicase 21 (DDX21) is a member of the DDX family. In addition to its function of regulating cellular RNA metabolism, DDX21 also regulates innate immunity and is involved in the replication cycle of some viruses. However, the relationship between DDX21 and PRRSV has not yet been explored. Here, we found that a DDX21 overexpression promoted PRRSV replication, whereas knockdown of DDX21 reduced PRRSV proliferation. Mechanistically, DDX21 promoted PRRSV replication independently of its ATPase, RNA helicase, and foldase activities. Furthermore, overexpression of DDX21 stabilized the expressions of PRRSV nsp1α, nsp1β, and nucleocapsid proteins, three known antagonists of interferon β (IFN-β). Knockdown of DDX21 activated the IFN-β signaling pathway in PRRSV-infected cells, suggesting that the effect of DDX21 on PRRSV-encoded IFN-β antagonists may be a driving factor for its contribution to viral proliferation. We also found that PRRSV infection enhanced DDX21 expression and promoted its nucleus-to-cytoplasm translocation. Screening PRRSV-encoded proteins showed that nsp1β interacted with the C-terminus of DDX21 and enhanced the expression of DDX21. Taken together, these findings reveal that DDX21 plays an important role in regulating PRRSV proliferation through multiple mechanisms.
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Affiliation(s)
- Jia Li
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (J.L.); (D.W.); (P.F.); (Y.P.); (Y.Z.); (L.F.)
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Dang Wang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (J.L.); (D.W.); (P.F.); (Y.P.); (Y.Z.); (L.F.)
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Puxian Fang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (J.L.); (D.W.); (P.F.); (Y.P.); (Y.Z.); (L.F.)
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Yu Pang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (J.L.); (D.W.); (P.F.); (Y.P.); (Y.Z.); (L.F.)
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Yanrong Zhou
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (J.L.); (D.W.); (P.F.); (Y.P.); (Y.Z.); (L.F.)
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Liurong Fang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (J.L.); (D.W.); (P.F.); (Y.P.); (Y.Z.); (L.F.)
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Shaobo Xiao
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (J.L.); (D.W.); (P.F.); (Y.P.); (Y.Z.); (L.F.)
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
- Correspondence:
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14
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Ma R, Zhang X, Shu J, Liu Z, Sun W, Hou S, Lv Y, Ying Q, Wang F, Jin X, Liu R, Wu X. Nlrc3 Knockout Mice Showed Renal Pathological Changes After HTNV Infection. Front Immunol 2021; 12:692509. [PMID: 34335602 PMCID: PMC8322986 DOI: 10.3389/fimmu.2021.692509] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/29/2021] [Indexed: 12/20/2022] Open
Abstract
Hantaan virus (HTNV) infects humans and causes hemorrhagic fever with renal syndrome (HFRS). The development of well-characterized animal models of HFRS could accelerate the testing of vaccine candidates and therapeutic agents and provide a useful tool for studying the pathogenesis of HFRS. Because NLRC3 has multiple immunoregulatory roles, we investigated the susceptibility of Nlrc3-/- mice to HTNV infection in order to establish a new model of HFRS. Nlrc3-/- mice developed weight loss, renal hemorrhage, and tubule dilation after HTNV infection, recapitulating many clinical symptoms of human HFRS. Moreover, infected Nlrc3-/- mice showed higher viral loads in serum, spleen, and kidney than wild type C57BL/6 (WT) mice, and some of them manifested more hematological disorders and significant pathological changes within multiple organs than WT mice. Our results identify that HTNV infected Nlrc3-/- mice can develop clinical symptoms and pathological changes resembling patients with HFRS, suggesting a new model for studying the pathogenesis and testing of candidate vaccines and therapeutics.
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Affiliation(s)
- Ruixue Ma
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi’an, China
| | - Xiaoxiao Zhang
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi’an, China
| | - Jiayi Shu
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Ziyu Liu
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi’an, China
| | - Wenjie Sun
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi’an, China
- The College of Life Sciences and Medicine, Northwest University, Xi’an, China
| | - Shiyuan Hou
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi’an, China
| | - Yunhua Lv
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi’an, China
| | - Qikang Ying
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi’an, China
| | - Fang Wang
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi’an, China
| | - Xia Jin
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Rongrong Liu
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi’an, China
| | - Xingan Wu
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi’an, China
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15
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Liu R, Ma R, Liu Z, Hu H, Shu J, Hu P, Kang J, Zhang Y, Han M, Zhang X, Zheng Y, Ying Q, Hou S, Wang W, Wang F, Cheng N, Zhuang Y, Lian J, Jin X, Wu X. HTNV infection of CD8 + T cells is associated with disease progression in HFRS patients. Commun Biol 2021; 4:652. [PMID: 34079056 PMCID: PMC8173013 DOI: 10.1038/s42003-021-02182-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 05/05/2021] [Indexed: 12/28/2022] Open
Abstract
Hantaan viruses (HTNVs) are zoonotic pathogens transmitted mainly by rodents and capable of infecting humans. Increasing knowledge of the human response to HTNV infection can guide the development of new preventative vaccines and therapeutic strategies. Here, we show that HTNV can infect CD8+ T cells in vivo in patients diagnosed with hemorrhagic fever with renal syndrome (HFRS). Electron microscopy-mediated tracking of the life cycle and ultrastructure of HTNV-infected CD8+ T cells in vitro showed an association between notable increases in cytoplasmic multivesicular bodies and virus production. Notably, based on a clinical cohort of 280 patients, we found that circulating HTNV-infected CD8+ T cell numbers in blood were proportional to disease severity. These results demonstrate that viral infected CD8+ T cells may be used as an adjunct marker for monitoring HFRS disease progression and that modulating T cell functions may be explored for new treatment strategies.
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Affiliation(s)
- Rongrong Liu
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Ruixue Ma
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Ziyu Liu
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Haifeng Hu
- Department of Infective Diseases, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jiayi Shu
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Peizhen Hu
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Junjun Kang
- School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Yusi Zhang
- School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Mingwei Han
- School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Xiaoxiao Zhang
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Yiting Zheng
- School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Qikang Ying
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Shiyuan Hou
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Wenqiu Wang
- School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Fang Wang
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Ning Cheng
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA, 94115, USA
| | - Yan Zhuang
- Department of Infective Diseases, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jianqi Lian
- Department of Infective Diseases, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Xia Jin
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.
| | - Xingan Wu
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China.
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16
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You JE, Jung SH, Kim PH. The Effect of Annexin A1 as a Potential New Therapeutic Target on Neuronal Damage by Activated Microglia. Mol Cells 2021; 44:195-206. [PMID: 33935041 PMCID: PMC8112165 DOI: 10.14348/molcells.2021.0020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/25/2021] [Accepted: 03/15/2021] [Indexed: 12/11/2022] Open
Abstract
Brain disease is known to cause irrevocable and fatal loss of biological function once damaged. One of various causes of its development is damage to neuron cells caused by hyperactivated microglia, which function as immune cells in brain. Among the genes expressed in microglia stimulated by various antigens, annexin A1 (ANXA1) is expressed in the early phase of the inflammatory response and plays an important role in controlling the immune response. In this study, we assessed whether ANXA1 can be a therapeutic target gene for the initial reduction of the immune response induced by microglia to minimize neuronal damage. To address this, mouse-origin microglial cells were stimulated to mimic an immune response by lipopolysaccharide (LPS) treatment. The LPS treatment caused activation of ANXA1 gene and expression of inflammatory cytokines. To assess the biological function in microglia by the downregulation of ANXA1 gene, cells were treated with short hairpin RNA-ANXA1. Downregulated ANXA1 affected the function of mitochondria in the microglia and showed reduced neuronal damage when compared to the control group in the co-culture system. Taken together, our results showed that ANXA1 could be used as a potential therapeutic target for inflammation-related neurodegenerative diseases.
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Affiliation(s)
- Ji-Eun You
- Department of Biomedical Laboratory Science, Konyang University, Daejeon 35365, Korea
| | - Se-Hwa Jung
- Department of Biomedical Laboratory Science, Konyang University, Daejeon 35365, Korea
| | - Pyung-Hwan Kim
- Department of Biomedical Laboratory Science, Konyang University, Daejeon 35365, Korea
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17
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Low Expression of DDX60 Gene Might Associate with the Radiosensitivity for Patients with Breast Cancer. JOURNAL OF ONCOLOGY 2020; 2020:8309492. [PMID: 32765606 PMCID: PMC7387961 DOI: 10.1155/2020/8309492] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 06/26/2020] [Indexed: 12/24/2022]
Abstract
DEXD/H box helicase 60 (DDX60) is a new type of DEAD-box RNA helicase, which is induced to express after virus infection. It might involve in antiviral immunity by promoting RIG-I-like receptor-mediated signal transduction. In addition, previous studies had shown that the expression of DDX60 is related to cancer, but there was still a lack of relevant research in breast cancer. In this study, we used the information of patients with breast cancer in the TCGA database for statistical analysis and found that the breast cancer patients with low expression of DDX60 exhibited radiosensitivity. Comparing the radiotherapy groups with the nonradiotherapy groups, for patients with low expression of DDX60, the adjusted hazard ratio (HR) values for radiotherapy were 0.244 (0.064–0.921) and 0.199 (0.062–0.646) in the training and validation datasets, with the p values 0.040 and 0.007, respectively. However, for patients with high expression of DDX60, the adjusted hazard ratio (HR) values were 3.582 (0.627–20.467) and 2.421 (0.460–12.773), with the p values 0.054 and 0.297, respectively. These results suggested that the expression of DDX60 might strongly associate with individualized radiosensitivity in patients with breast cancer.
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18
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Chen Z, Li Z, Hu X, Xie F, Kuang S, Zhan B, Gao W, Chen X, Gao S, Li Y, Wang Y, Qian F, Ding C, Gan J, Ji C, Xu X, Zhou Z, Huang J, He HH, Li J. Structural Basis of Human Helicase DDX21 in RNA Binding, Unwinding, and Antiviral Signal Activation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2000532. [PMID: 32714761 PMCID: PMC7375243 DOI: 10.1002/advs.202000532] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 05/19/2020] [Indexed: 05/20/2023]
Abstract
RNA helicase DDX21 plays vital roles in ribosomal RNA biogenesis, transcription, and the regulation of host innate immunity during virus infection. How DDX21 recognizes and unwinds RNA and how DDX21 interacts with virus remain poorly understood. Here, crystal structures of human DDX21 determined in three distinct states are reported, including the apo-state, the AMPPNP plus single-stranded RNA (ssRNA) bound pre-hydrolysis state, and the ADP-bound post-hydrolysis state, revealing an open to closed conformational change upon RNA binding and unwinding. The core of the RNA unwinding machinery of DDX21 includes one wedge helix, one sensor motif V and the DEVD box, which links the binding pockets of ATP and ssRNA. The mutant D339H/E340G dramatically increases RNA binding activity. Moreover, Hill coefficient analysis reveals that DDX21 unwinds double-stranded RNA (dsRNA) in a cooperative manner. Besides, the nonstructural (NS1) protein of influenza A inhibits the ATPase and unwinding activity of DDX21 via small RNAs, which cooperatively assemble with DDX21 and NS1. The structures illustrate the dynamic process of ATP hydrolysis and RNA unwinding for RNA helicases, and the RNA modulated interaction between NS1 and DDX21 generates a fresh perspective toward the virus-host interface. It would benefit in developing therapeutics to combat the influenza virus infection.
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Affiliation(s)
- Zijun Chen
- State Key Laboratory of Genetic EngineeringDepartment of NeurologySchool of Life Sciences and Huashan HospitalCollaborative Innovation Center of Genetics and DevelopmentEngineering Research Center of Gene Technology of MOEShanghai Engineering Research Center of Industrial MicroorganismsFudan UniversityShanghai200438China
| | - Zhengyang Li
- State Key Laboratory of Genetic EngineeringDepartment of NeurologySchool of Life Sciences and Huashan HospitalCollaborative Innovation Center of Genetics and DevelopmentEngineering Research Center of Gene Technology of MOEShanghai Engineering Research Center of Industrial MicroorganismsFudan UniversityShanghai200438China
| | - Xiaojian Hu
- State Key Laboratory of Genetic EngineeringDepartment of NeurologySchool of Life Sciences and Huashan HospitalCollaborative Innovation Center of Genetics and DevelopmentEngineering Research Center of Gene Technology of MOEShanghai Engineering Research Center of Industrial MicroorganismsFudan UniversityShanghai200438China
| | - Feiyan Xie
- State Key Laboratory of Genetic EngineeringDepartment of NeurologySchool of Life Sciences and Huashan HospitalCollaborative Innovation Center of Genetics and DevelopmentEngineering Research Center of Gene Technology of MOEShanghai Engineering Research Center of Industrial MicroorganismsFudan UniversityShanghai200438China
| | - Siyun Kuang
- State Key Laboratory of Genetic EngineeringDepartment of NeurologySchool of Life Sciences and Huashan HospitalCollaborative Innovation Center of Genetics and DevelopmentEngineering Research Center of Gene Technology of MOEShanghai Engineering Research Center of Industrial MicroorganismsFudan UniversityShanghai200438China
| | - Bowen Zhan
- State Key Laboratory of Genetic EngineeringDepartment of NeurologySchool of Life Sciences and Huashan HospitalCollaborative Innovation Center of Genetics and DevelopmentEngineering Research Center of Gene Technology of MOEShanghai Engineering Research Center of Industrial MicroorganismsFudan UniversityShanghai200438China
| | - Wenqing Gao
- State Key Laboratory of Genetic EngineeringDepartment of NeurologySchool of Life Sciences and Huashan HospitalCollaborative Innovation Center of Genetics and DevelopmentEngineering Research Center of Gene Technology of MOEShanghai Engineering Research Center of Industrial MicroorganismsFudan UniversityShanghai200438China
| | - Xiangjun Chen
- Department of NeurologyHuashan HospitalFudan UniversityShanghai200040China
| | - Siqi Gao
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesFudan UniversityShanghai200438China
| | - Yang Li
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesFudan UniversityShanghai200438China
| | - Yongming Wang
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesFudan UniversityShanghai200438China
| | - Feng Qian
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesFudan UniversityShanghai200438China
| | - Chen Ding
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesFudan UniversityShanghai200438China
| | - Jianhua Gan
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesFudan UniversityShanghai200438China
| | - Chaoneng Ji
- State Key Laboratory of Genetic EngineeringSchool of Life SciencesFudan UniversityShanghai200438China
| | - Xue‐Wei Xu
- Key Laboratory of Marine Ecosystem DynamicsMinistry of Natural Resources & Second Institute of OceanographyMinistry of Natural ResourcesHangzhou310012China
| | - Zheng Zhou
- China Novartis Institutes for Biomedical Research Co. LtdShanghai201203China
| | - Jinqing Huang
- Department of ChemistryThe Hong Kong University of Science and TechnologyHong KongChina
| | - Housheng Hansen He
- Department of Medical BiophysicsUniversity of Toronto, and Princess Margaret Cancer CenterUniversity Health NetworkTorontoM5G 1L7, OntarioCanada
| | - Jixi Li
- State Key Laboratory of Genetic EngineeringDepartment of NeurologySchool of Life Sciences and Huashan HospitalCollaborative Innovation Center of Genetics and DevelopmentEngineering Research Center of Gene Technology of MOEShanghai Engineering Research Center of Industrial MicroorganismsFudan UniversityShanghai200438China
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19
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Wang K, Ma H, Liu H, Ye W, Li Z, Cheng L, Zhang L, Lei Y, Shen L, Zhang F. The Glycoprotein and Nucleocapsid Protein of Hantaviruses Manipulate Autophagy Flux to Restrain Host Innate Immune Responses. Cell Rep 2020; 27:2075-2091.e5. [PMID: 31091447 DOI: 10.1016/j.celrep.2019.04.061] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 03/05/2019] [Accepted: 04/11/2019] [Indexed: 01/08/2023] Open
Abstract
Hantavirus infection, which causes severe zoonotic diseases with high mortality in humans, has become a global public health concern. Here, we demonstrate that Hantaan virus (HTNV), the prevalent prototype of the hantavirus in Asia, can restrain innate immune responses by manipulating host autophagy flux. HTNV induces complete mitophagy at the early stage of infection but incomplete autophagy at the late stage, and these responses involve the viral glycoprotein (Gn) and nucleocapsid protein (NP), respectively. Gn translocates to mitochondria and interacts with TUFM, recruiting LC3B and promoting mitophagy. Gn-induced mitophagy inhibits type I interferon (IFN) responses by degrading MAVS. Additionally, we found that NP competes with Gn for binding to LC3B, which inhibits Gn-mediated autophagosome formation, and interacts with SNAP29, which prevents autophagosome-lysosome fusion. Thus, NP disturbs the autophagic degradation of Gn. These findings highlight how hantaviruses repurpose host autophagy and evade innate immune responses for their life cycle and pathogenesis.
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Affiliation(s)
- Kerong Wang
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Hongwei Ma
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - He Liu
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Wei Ye
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Zhuo Li
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Linfeng Cheng
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Liang Zhang
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Yingfeng Lei
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Lixin Shen
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China.
| | - Fanglin Zhang
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, China.
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20
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Sarshar M, Scribano D, Tranquilli G, Di Pietro M, Filardo S, Zagaglia C, Sessa R, Palamara AT, Ambrosi C. A simple, fast and reliable scan-based technique as a novel approach to quantify intracellular bacteria. BMC Microbiol 2019; 19:252. [PMID: 31718545 PMCID: PMC6849193 DOI: 10.1186/s12866-019-1625-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 10/24/2019] [Indexed: 12/31/2022] Open
Abstract
Background Quantification of intracellular bacteria is fundamental in many areas of cellular and clinical microbiology to study acute and chronic infections. Therefore, rapid, accurate and low-cost methods represent valuable tools in determining bacterial ability to persist and proliferate within eukaryotic cells. Results Herein, we present the first application of the immunofluorescence In-Cell Western (ICW) assay aimed at quantifying intracellular bacteria in in vitro infection models. The performance of this new approach was evaluated in cell culture infection models using three microorganisms with different lifestyles. Two facultative intracellular bacteria, the fast-growing Shigella flexneri and a persistent strain of Escherichia coli, as well as the obligate intracellular bacterium Chlamydia trachomatis were chosen as bacterial models. The ICW assay was performed in parallel with conventional quantification methods, i.e. colony forming units (CFUs) and inclusion forming units (IFUs). The fluorescence signal intensity values from the ICW assay were highly correlated to CFU/IFUs counting and showed coefficients of determination (R2), ranging from 0,92 to 0,99. Conclusions The ICW assay offers several advantages including sensitivity, reproducibility, high speed, operator-independent data acquisition and overtime stability of fluorescence signals. All these features, together with the simplicity in performance, make this assay particularly suitable for high-throughput screening and diagnostic approaches.
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Affiliation(s)
- Meysam Sarshar
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Laboratory affiliated to Institute Pasteur Italia-Fondazione Cenci Bolognetti, 00185, Rome, Italy.,Microbiology Research Center (MRC), Pasteur Institute of Iran, Tehran, 1316943551, Iran
| | - Daniela Scribano
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185, Rome, Italy.,Dani Di Giò Foundation-Onlus, Rome, Italy
| | - Giulia Tranquilli
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185, Rome, Italy
| | - Marisa Di Pietro
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185, Rome, Italy
| | - Simone Filardo
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185, Rome, Italy
| | - Carlo Zagaglia
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185, Rome, Italy
| | - Rosa Sessa
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185, Rome, Italy
| | - Anna Teresa Palamara
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Laboratory affiliated to Institute Pasteur Italia-Fondazione Cenci Bolognetti, 00185, Rome, Italy.,IRCCS San Raffaele Pisana, Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166, Rome, Italy
| | - Cecilia Ambrosi
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185, Rome, Italy. .,IRCCS San Raffaele Pisana, Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166, Rome, Italy.
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21
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Ye C, Wang D, Liu H, Ma H, Dong Y, Yao M, Wang Y, Zhang H, Zhang L, Cheng L, Xu Z, Lei Y, Zhang F, Ye W. An Improved Enzyme-Linked Focus Formation Assay Revealed Baloxavir Acid as a Potential Antiviral Therapeutic Against Hantavirus Infection. Front Pharmacol 2019; 10:1203. [PMID: 31680975 PMCID: PMC6807675 DOI: 10.3389/fphar.2019.01203] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/17/2019] [Indexed: 12/18/2022] Open
Abstract
Hantaviruses, etiologic pathogens responsible for two severe human diseases, exist in areas ranging from Eurasia to America and remain global public health concerns. Conventionally, plaque formation assays have been used for hantavirus titering. However, hantaviruses replicate slowly within cells and produce minimal cytopathic effects, making this technique difficult to master. The improved enzyme-linked immunosorbent assay-based antigen detection method is easier to perform but is still time consuming. Here, we established an enzyme-linked focus formation assay (FFA) for Hantaan virus titering that is twice as fast as traditional assays. Moreover, using this method, we evaluated the effects of favipiravir (T-705) and another influenza virus drug, baloxavir acid (BXA), on hantavirus replication. We found that the endonuclease inhibitor BXA exerted similar anti-hantavirus effects as T-705. Overall, we developed a time-saving method for hantavirus titering and suggest BXA as a potential treatment choice for hantavirus-exposed individuals.
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Affiliation(s)
- Chuantao Ye
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China.,Department of Infectious Diseases, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Dan Wang
- School of Pharmaceutical Science, Shanxi Medical University, Taiyuan, China
| | - He Liu
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
| | - Hongwei Ma
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
| | - Yangchao Dong
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
| | - Min Yao
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
| | - Yuan Wang
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
| | - Hui Zhang
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
| | - Liang Zhang
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
| | - Linfeng Cheng
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
| | - Zhikai Xu
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
| | - Yingfeng Lei
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
| | - Fanglin Zhang
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
| | - Wei Ye
- Department of Microbiology, School of Preclinical Medicine, Fourth Military Medical University, Xi'an, China
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22
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Perčulija V, Ouyang S. Diverse Roles of DEAD/DEAH-Box Helicases in Innate Immunity and Diseases. HELICASES FROM ALL DOMAINS OF LIFE 2019. [PMCID: PMC7158350 DOI: 10.1016/b978-0-12-814685-9.00009-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
DEAD/DEAH-box helicases are enzymes that belong to the DEAD/H-box family of SF2 helicase superfamily. These enzymes are essential in RNA metabolism, where they are involved in a number of processes that require manipulation of RNA structure. Recent studies have found that some DEAD/DEAH-box helicases play important roles in innate immunity, where they act as sensors of cytosolic DNA/RNA, as adaptor proteins, or as regulators of signaling and gene expression. In spite of their function in immunity, DEAD/DEAH-box helicases can also be hijacked and exploited by viruses to circumvent detection and aid in viral replication. These findings not only imply that DEAD/DEAH-box helicases have a broader function than previously thought, but also give us a much better understanding of immune mechanisms and diseases that arise due to the dysregulation or evasion thereof. In this chapter, we demonstrate the known scope of activities of human DEAD/DEAH-box helicases in innate immunity and interaction with viruses or other pathogens. Additionally, we give an outline of diseases in which they are, or may be, involved in the context of immunity.
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