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Porcine circovirus type 2 ORF5 induces an inflammatory response by up-regulating miR-21 levels through targeting nuclear ssc-miR-30d 猪圆环病毒 2 型 ORF5 通过靶向核 ssc-miR-30d 上调 miR-21 水平诱导炎症反应。
IF 5 4区 医学
Virus research Pub Date : 2024-05-23 DOI: 10.1016/j.virusres.2024.199396
Chang Li , Keli Yang , Haofei Song, Chuqiao Xia, Qiong Wu, Jiajia Zhu, Wei Liu, Ting Gao, Rui Guo, Zewen Liu, Fangyan Yuan, Yongxiang Tian, Danna Zhou
{"title":"Porcine circovirus type 2 ORF5 induces an inflammatory response by up-regulating miR-21 levels through targeting nuclear ssc-miR-30d","authors":"Chang Li ,&nbsp;Keli Yang ,&nbsp;Haofei Song,&nbsp;Chuqiao Xia,&nbsp;Qiong Wu,&nbsp;Jiajia Zhu,&nbsp;Wei Liu,&nbsp;Ting Gao,&nbsp;Rui Guo,&nbsp;Zewen Liu,&nbsp;Fangyan Yuan,&nbsp;Yongxiang Tian,&nbsp;Danna Zhou","doi":"10.1016/j.virusres.2024.199396","DOIUrl":"10.1016/j.virusres.2024.199396","url":null,"abstract":"<div><p>Porcine circovirus type 2 (PCV2) infection leads to multi-system inflammation in pigs, and this effect can be achieved by upregulating host miR-21. The underlying mechanism of miR-21 regulates PCV2-induced inflammation is already known, however, how PCV2 regulates miR-21 levels and function using both autonomic and host factors remains to be further revealed. Here we present the first evidence that PCV2 ORF5 induces an inflammatory response by up-regulating miR-21 level through targeting nuclear miR-30d. In this study, we found that overexpression of ORF5 significantly increased miR-21 level and promoted the expression of inflammatory cytokines and activation of the NF-κB pathway, while ORF5 mutation had the opposite effect. Moreover, the differential expression of miR-21 could significantly change the pro-inflammatory effect of ORF5, indicating that ORF5 promotes inflammatory response by up-regulating miR-21. Bioinformatics analysis and clinical detection found that nuclear miR-30d was significantly down-regulated after ORF5 overexpression and PCV2 infection, and targeted pri-miR-21 and PCV2 ORF5. Functionally, we found that miR-30d inhibited the levels of miR-21 and inflammatory cytokines in cells. Mechanistically, we demonstrated that ORF5 inhibits miR-30d expression levels through direct binding but not via the circRNA pathway, and miR-30d inhibits miR-21 levels by targeting pri-miR-21. In summary, the present study revealed the molecular mechanism of ORF5 upregulation of miR-21, further refined the molecular chain of PCV2-induced inflammatory response and elucidated the role of miRNAs in it.</p></div>","PeriodicalId":23483,"journal":{"name":"Virus research","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0168170224000893/pdfft?md5=fec32b35ce7679aefde1685648a67ebe&pid=1-s2.0-S0168170224000893-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141065711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cassava brown streak virus evolves with a nucleotide-substitution rate that is typical for the family Potyviridae 木薯褐条病毒的核苷酸替换率是典型的 Potyviridae 科病毒。
IF 5 4区 医学
Virus research Pub Date : 2024-05-22 DOI: 10.1016/j.virusres.2024.199397
Willard Mbewe , Settumba Mukasa , Mildred Ochwo-Ssemakula , Peter Sseruwagi , Fred Tairo , Joseph Ndunguru , Siobain Duffy
{"title":"Cassava brown streak virus evolves with a nucleotide-substitution rate that is typical for the family Potyviridae","authors":"Willard Mbewe ,&nbsp;Settumba Mukasa ,&nbsp;Mildred Ochwo-Ssemakula ,&nbsp;Peter Sseruwagi ,&nbsp;Fred Tairo ,&nbsp;Joseph Ndunguru ,&nbsp;Siobain Duffy","doi":"10.1016/j.virusres.2024.199397","DOIUrl":"10.1016/j.virusres.2024.199397","url":null,"abstract":"<div><p>The ipomoviruses (family <em>Potyviridae</em>) that cause cassava brown streak disease (cassava brown streak virus [CBSV] and Uganda cassava brown streak virus [UCBSV]) are damaging plant pathogens that affect the sustainability of cassava production in East and Central Africa. However, little is known about the rate at which the viruses evolve and when they emerged in Africa – which inform how easily these viruses can host shift and resist RNAi approaches for control. We present here the rates of evolution determined from the coat protein gene (CP) of CBSV (Temporal signal in a UCBSV dataset was not sufficient for comparable analysis). Our BEAST analysis estimated the CBSV CP evolves at a mean rate of 1.43 × 10<sup>−3</sup> nucleotide substitutions per site per year, with the most recent common ancestor of sampled CBSV isolates existing in 1944 (95% HPD, between years 1922 – 1963). We compared the published measured and estimated rates of evolution of CPs from ten families of plant viruses and showed that CBSV is an average-evolving potyvirid, but that members of <em>Potyviridae</em> evolve more quickly than members of <em>Virgaviridae</em> and the single representatives of <em>Betaflexiviridae, Bunyaviridae, Caulimoviridae</em> and <em>Closteroviridae.</em></p></div>","PeriodicalId":23483,"journal":{"name":"Virus research","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S016817022400090X/pdfft?md5=eda7ea1a2a7152abd451c912db4044e1&pid=1-s2.0-S016817022400090X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140946161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation and characterization of mouse-derived monoclonal antibodies against the hemagglutinin of the H1N1 influenza virus 针对甲型 H1N1 流感病毒血凝素的小鼠衍生单克隆抗体的制备和特性分析。
IF 5 4区 医学
Virus research Pub Date : 2024-05-21 DOI: 10.1016/j.virusres.2024.199402
Xiantian Lin , Fan Yang , Sijing Yan , Han Wu , Ping Wang , Yuxi Zhao , Danrong Shi , Hangping Yao , Haibo Wu , Lanjuan Li
{"title":"Preparation and characterization of mouse-derived monoclonal antibodies against the hemagglutinin of the H1N1 influenza virus","authors":"Xiantian Lin ,&nbsp;Fan Yang ,&nbsp;Sijing Yan ,&nbsp;Han Wu ,&nbsp;Ping Wang ,&nbsp;Yuxi Zhao ,&nbsp;Danrong Shi ,&nbsp;Hangping Yao ,&nbsp;Haibo Wu ,&nbsp;Lanjuan Li","doi":"10.1016/j.virusres.2024.199402","DOIUrl":"10.1016/j.virusres.2024.199402","url":null,"abstract":"<div><p>H1N1 influenza virus is a significant global public health concern. Monoclonal antibodies (mAbs) targeting specific viral proteins such as hemagglutinin (HA) have become an important therapeutic strategy, offering highly specific targeting to block viral transmission and infection. This study focused on the development of mAbs targeting HA of the A/Victoria/2570/2019 (H1N1pdm09, VIC-19) strain by utilizing hybridoma technology to produce two mAbs with high binding capacity. Notably, mAb 2B2 has demonstrated a strong affinity for HA proteins in recent H1N1 influenza vaccine strains. In vitro assessments showed that both mAbs exhibited broad-spectrum hemagglutination inhibition and potent neutralizing effects against various vaccine strains of H1N1pdm09 viruses. 2B2 was also effective in animal models, offering both preventive and therapeutic protection against infections caused by recent H1N1 strains, highlighting its potential for clinical application. By individually co-cultivating each of the aforementioned mAbs with the virus in chicken embryos, four amino acid substitution sites in HA (H138Q, G140R, A141E/V, and D187E) were identified in escape mutants, three in the antigenic site Ca2, and one in Sb. The identification of such mutations is pivotal, as it compels further investigation into how these alterations could undermine the binding efficacy and neutralization capacity of antibodies, thereby impacting the design and optimization of mAb therapies and influenza vaccines. This research highlights the necessity for continuous exploration into the dynamic interaction between viral evolution and antibody response, which is vital for the formulation of robust therapeutic and preventive strategies against influenza.</p></div>","PeriodicalId":23483,"journal":{"name":"Virus research","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0168170224000959/pdfft?md5=a6c6cd5246fe32ab62d602d0b2fc838a&pid=1-s2.0-S0168170224000959-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141076870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of two inoculation routes of an adenovirus-mediated viral protein inhibitor in a Crimean-Congo hemorrhagic fever mouse model 在克里米亚-刚果出血热小鼠模型中评估腺病毒介导的病毒蛋白抑制剂的两种接种途径。
IF 5 4区 医学
Virus research Pub Date : 2024-05-20 DOI: 10.1016/j.virusres.2024.199398
Florine E.M. Scholte , Jessica R. Spengler , Stephen R. Welch , Jessica R. Harmon , JoAnn D. Coleman-McCray , Katherine A. Davies , Scott D. Pegan , Joel M. Montgomery , Christina F. Spiropoulou , Éric Bergeron
{"title":"Evaluation of two inoculation routes of an adenovirus-mediated viral protein inhibitor in a Crimean-Congo hemorrhagic fever mouse model","authors":"Florine E.M. Scholte ,&nbsp;Jessica R. Spengler ,&nbsp;Stephen R. Welch ,&nbsp;Jessica R. Harmon ,&nbsp;JoAnn D. Coleman-McCray ,&nbsp;Katherine A. Davies ,&nbsp;Scott D. Pegan ,&nbsp;Joel M. Montgomery ,&nbsp;Christina F. Spiropoulou ,&nbsp;Éric Bergeron","doi":"10.1016/j.virusres.2024.199398","DOIUrl":"10.1016/j.virusres.2024.199398","url":null,"abstract":"<div><p>Crimean-Congo hemorrhagic fever virus (CCHFV) is a tick-borne nairovirus with a wide geographic spread that can cause severe and lethal disease. No specific medical countermeasures are approved to combat this illness. The CCHFV L protein contains an ovarian tumor (OTU) domain with a cysteine protease thought to modulate cellular immune responses by removing ubiquitin and ISG15 post-translational modifications from host and viral proteins. Viral deubiquitinases like CCHFV OTU are attractive drug targets, as blocking their activity may enhance cellular immune responses to infection, and potentially inhibit viral replication itself. We previously demonstrated that the engineered ubiquitin variant CC4 is a potent inhibitor of CCHFV replication <em>in vitro</em>. A major challenge of the therapeutic use of small protein inhibitors such as CC4 is their requirement for intracellular delivery, <em>e.g.</em>, by viral vectors. In this study, we examined the feasibility of <em>in vivo</em> CC4 delivery by a replication-deficient recombinant adenovirus (Ad-CC4) in a lethal CCHFV mouse model. Since the liver is a primary target of CCHFV infection, we aimed to optimize delivery to this organ by comparing intravenous (tail vein) and intraperitoneal injection of Ad-CC4. While tail vein injection is a traditional route for adenovirus delivery, in our hands intraperitoneal injection resulted in higher and more widespread levels of adenovirus genome in tissues, including, as intended, the liver. However, despite promising <em>in vitro</em> results, neither route of <em>in vivo</em> CC4 treatment resulted in protection from a lethal CCHFV infection.</p></div>","PeriodicalId":23483,"journal":{"name":"Virus research","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0168170224000911/pdfft?md5=1f1e014499a4ef3dd32d57f694eddaef&pid=1-s2.0-S0168170224000911-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140959721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Associations between genetic mutations in different SARS-CoV-2 strains and negative conversion time of viral RNA among imported cases in Hangzhou: A cross-sectional study 杭州市输入性病例中不同 SARS-CoV-2 株系基因突变与病毒 RNA 阴转时间之间的关系:一项横断面研究。
IF 5 4区 医学
Virus research Pub Date : 2024-05-20 DOI: 10.1016/j.virusres.2024.199400
Yi Wang , Hua Yu , Tao Zhang , Zhou Sun , Wenwu Yao , Wenhui Zhang , Qian Chen , Yao Zhong , Qian Huang , Meihua Wang , Haoqiu Wang , Beibei Wu
{"title":"Associations between genetic mutations in different SARS-CoV-2 strains and negative conversion time of viral RNA among imported cases in Hangzhou: A cross-sectional study","authors":"Yi Wang ,&nbsp;Hua Yu ,&nbsp;Tao Zhang ,&nbsp;Zhou Sun ,&nbsp;Wenwu Yao ,&nbsp;Wenhui Zhang ,&nbsp;Qian Chen ,&nbsp;Yao Zhong ,&nbsp;Qian Huang ,&nbsp;Meihua Wang ,&nbsp;Haoqiu Wang ,&nbsp;Beibei Wu","doi":"10.1016/j.virusres.2024.199400","DOIUrl":"10.1016/j.virusres.2024.199400","url":null,"abstract":"<div><h3>Purpose</h3><p>Previous studies on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have focused on factors that influence the achievement of negative conversion of viral RNA. This study aimed to investigate the effects of the genetic mutations in different SARS-CoV-2 strains on the negative conversion time (NCT) among imported cases in Hangzhou, Zhejiang Province, China, in order to provide valuable insights for developing targeted epidemic prevention guidelines.</p></div><div><h3>Methods</h3><p>This retrospective study involved 146 imported SARS-CoV-2 cases in Hangzhou from 8 April 2021 to 11 June 2022. We compared the SARS-CoV-2-specific indicators, clinical indexes, and NCT among the wild-type (WT), Delta, and Omicron groups. Spearman correlation analysis was used to identify the correlations of NCT with mutation types/frequencies.</p></div><div><h3>Results</h3><p>The mean age of the imported cases was 35.3 (SD: 12.3) years, with 71.92 % males and 28.08 % females. The mean cycle threshold (Ct) values of open reading frame 1ab (ORF1ab) and nucleocapsid (N) RNA were 25.17 (SD: 6.44) and 23.4 (SD: 6.76), respectively. The mutations of SARS-CoV-2 strains were mainly located in N, membrane (M), spike (S), ORF1a, ORF1b, ORF3a, ORF6, and ORF9b genes among the WT, Delta, and Omicron groups. NCT was significantly prolonged in the WT and Delta groups compared to the Omicron group. T lymphocyte, white blood cell, eosinophil, and basophil counts were dramatically higher in the WT group than the Delta group. White blood cell, red blood cell, and basophil counts were significantly lower in the Delta group than the Omicron group. Spearman correlation analysis revealed a significant correlation between the NCT of viral RNA and mutation types of viral genes of WT and Omicron strains. Additionally, NCT was markedly negatively correlated with the frequencies of five mutations in Omicron strains (ORF1b:P1223L, ORF1b:R1315C, ORF1b:T2163I, ORF3a:T223I, and ORF6:D61L).</p></div><div><h3>Conclusions</h3><p>This study indicates that five mutations in Omicron strains (ORF1b:P1223L/R1315C/T2163I, ORF3a:T223I and ORF6:D61L) shortened NCT in imported SARS-CoV-2 cases.</p></div>","PeriodicalId":23483,"journal":{"name":"Virus research","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0168170224000935/pdfft?md5=21eb98e045f60129ea20b7bc38074b27&pid=1-s2.0-S0168170224000935-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141065787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Does PI-ME/CFS recall post-COVID (PASC) syndrome? PI-ME/CFS 是否会让人联想起后 COVID(PASC)综合征?
IF 5 4区 医学
Virus research Pub Date : 2024-05-18 DOI: 10.1016/j.virusres.2024.199393
Salvatore Chirumbolo , Marianno Franzini , Umberto Tirelli
{"title":"Does PI-ME/CFS recall post-COVID (PASC) syndrome?","authors":"Salvatore Chirumbolo ,&nbsp;Marianno Franzini ,&nbsp;Umberto Tirelli","doi":"10.1016/j.virusres.2024.199393","DOIUrl":"10.1016/j.virusres.2024.199393","url":null,"abstract":"","PeriodicalId":23483,"journal":{"name":"Virus research","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0168170224000868/pdfft?md5=1a71ac6d2f4fb8921d2635d36951e652&pid=1-s2.0-S0168170224000868-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140912756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Paracrinal regulation of neutrophil functions by coronaviral infection in iPSC-derived alveolar type II epithelial cells iPSC衍生肺泡II型上皮细胞冠状病毒感染对中性粒细胞功能的副调控
IF 5 4区 医学
Virus research Pub Date : 2024-05-17 DOI: 10.1016/j.virusres.2024.199391
Yueh Chien , Xuan-Yang Huang , Aliaksandr A. Yarmishyn , Chian-Shiu Chien , Yu-Hao Liu , Yu-Jer Hsiao , Yi-Ying Lin , Wei-Yi Lai , Ssu-Cheng Huang , Meng-Shiue Lee , Shih-Hwa Chiou , Yi-Ping Yang , Guang-Yuh Chiou
{"title":"Paracrinal regulation of neutrophil functions by coronaviral infection in iPSC-derived alveolar type II epithelial cells","authors":"Yueh Chien ,&nbsp;Xuan-Yang Huang ,&nbsp;Aliaksandr A. Yarmishyn ,&nbsp;Chian-Shiu Chien ,&nbsp;Yu-Hao Liu ,&nbsp;Yu-Jer Hsiao ,&nbsp;Yi-Ying Lin ,&nbsp;Wei-Yi Lai ,&nbsp;Ssu-Cheng Huang ,&nbsp;Meng-Shiue Lee ,&nbsp;Shih-Hwa Chiou ,&nbsp;Yi-Ping Yang ,&nbsp;Guang-Yuh Chiou","doi":"10.1016/j.virusres.2024.199391","DOIUrl":"https://doi.org/10.1016/j.virusres.2024.199391","url":null,"abstract":"<div><p>Coronaviruses (CoVs) are enveloped single-stranded RNA viruses that predominantly attack the human respiratory system. In recent decades, several deadly human CoVs, including SARS-CoV, SARS-CoV-2, and MERS-CoV, have brought great impact on public health and economics. However, their high infectivity and the demand for high biosafety level facilities restrict the pathogenesis research of CoV infection. Exacerbated inflammatory cell infiltration is associated with poor prognosis in CoV-associated diseases. In this study, we used human CoV 229E (HCoV-229E), a CoV associated with relatively fewer biohazards, to investigate the pathogenesis of CoV infection and the regulation of neutrophil functions by CoV-infected lung cells. Induced pluripotent stem cell (iPSC)-derived alveolar epithelial type II cells (iAECIIs) exhibiting specific biomarkers and phenotypes were employed as an experimental model for CoV infection. After infection, the detection of dsRNA, S, and N proteins validated the infection of iAECIIs with HCoV-229E. The culture medium conditioned by the infected iAECIIs promoted the migration of neutrophils as well as their adhesion to the infected iAECIIs. Cytokine array revealed the elevated secretion of cytokines associated with chemotaxis and adhesion into the conditioned media from the infected iAECIIs. The importance of IL-8 secretion and ICAM-1 expression for neutrophil migration and adhesion, respectively, was demonstrated by using neutralizing antibodies. Moreover, next-generation sequencing analysis of the transcriptome revealed the upregulation of genes associated with cytokine signaling. To summarize, we established an <em>in vitro</em> model of CoV infection that can be applied for the study of the immune system perturbations during severe coronaviral disease.</p></div>","PeriodicalId":23483,"journal":{"name":"Virus research","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0168170224000844/pdfft?md5=e26db7f27509da5dbb61205da0da7f36&pid=1-s2.0-S0168170224000844-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140951331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Doxycycline inhibits neurotropic enterovirus proliferation in vitro 强力霉素可抑制体外神经性肠病毒的增殖。
IF 5 4区 医学
Virus research Pub Date : 2024-05-16 DOI: 10.1016/j.virusres.2024.199388
Fengyu Chi , Xinzhuo Liu , Juan Li , Moujian Guo , Zhenjie Zhang , Hong Zhou , Michael J. Carr , Yuming Li , Weifeng Shi
{"title":"Doxycycline inhibits neurotropic enterovirus proliferation in vitro","authors":"Fengyu Chi ,&nbsp;Xinzhuo Liu ,&nbsp;Juan Li ,&nbsp;Moujian Guo ,&nbsp;Zhenjie Zhang ,&nbsp;Hong Zhou ,&nbsp;Michael J. Carr ,&nbsp;Yuming Li ,&nbsp;Weifeng Shi","doi":"10.1016/j.virusres.2024.199388","DOIUrl":"10.1016/j.virusres.2024.199388","url":null,"abstract":"<div><p>Human enteroviruses (EVs) represent a global public health concern due to their association with a range of serious pediatric illnesses. Despite the high morbidity and mortality exerted by EVs, no broad-spectrum antivirals are currently available. Herein, we presented evidence that doxycycline can inhibit <em>in vitro</em> replication of various neurotropic EVs, including enterovirus A71 (EV-A71), enterovirus D68 (EV-D68), and coxsackievirus (CV)-A6, in a dose-dependent manner. Further investigations indicated that the drug primarily acted at the post-entry stage of virus infection <em>in vitro,</em> with inhibitory effects reaching up to 89 % for EV-A71 when administered two hours post-infection. These findings provide valuable insights for the development of antiviral drugs against EV infections.</p></div>","PeriodicalId":23483,"journal":{"name":"Virus research","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0168170224000819/pdfft?md5=d5ba99dc36dbcd8be73ad101e48c60cc&pid=1-s2.0-S0168170224000819-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140877481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A systematic mutation analysis of 13 major SARS-CoV-2 variants 13 种主要 SARS-CoV-2 变异的系统突变分析。
IF 5 4区 医学
Virus research Pub Date : 2024-05-15 DOI: 10.1016/j.virusres.2024.199392
Han Bai , Xuan Zhang , Tian Gong , Junpeng Ma , Peng Zhang , Zeqiong Cai , Doudou Ren , Chengsheng Zhang
{"title":"A systematic mutation analysis of 13 major SARS-CoV-2 variants","authors":"Han Bai ,&nbsp;Xuan Zhang ,&nbsp;Tian Gong ,&nbsp;Junpeng Ma ,&nbsp;Peng Zhang ,&nbsp;Zeqiong Cai ,&nbsp;Doudou Ren ,&nbsp;Chengsheng Zhang","doi":"10.1016/j.virusres.2024.199392","DOIUrl":"10.1016/j.virusres.2024.199392","url":null,"abstract":"<div><p>SARS-CoV-2 evolves constantly with various novel mutations. Due to their enhanced infectivity, transmissibility and immune evasion, a comprehensive understanding of the association between these mutations and the respective functional changes is crucial. However, previous mutation studies of major SARS-CoV-2 variants remain limited. Here, we performed systematic analyses of full-length amino acids mutation, phylogenetic features, protein physicochemical properties, molecular dynamics and immune escape as well as pseudotype virus infection assays among thirteen major SARS-CoV-2 variants. We found that Omicron exhibited the most abundant and complex mutation sites, higher indices of hydrophobicity and flexibility than other variants. The results of molecular dynamics simulation suggest that Omicron has the highest number of hydrogen bonds and strongest binding free energy between the S protein and ACE2 receptor. Furthermore, we revealed 10 immune escape sites in 13 major variants, some of them were reported previously, but four of which (i.e. 339/373/477/496) are first reported to be specific to Omicron, whereas 462 is specific to Epslion. The infectivity of these variants was confirmed by the pseudotype virus infection assays. Our findings may help us understand the functional consequences of the mutations within various variants and the underlying mechanisms of the immune escapes conferred by the S proteins.</p></div>","PeriodicalId":23483,"journal":{"name":"Virus research","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0168170224000856/pdfft?md5=39d0992d08d366970a7a0a60fa0fe6d3&pid=1-s2.0-S0168170224000856-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140904666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of two inoculation routes of an adenovirus-mediated viral protein inhibitor in a Crimean-Congo hemorrhagic fever mouse model. 在克里米亚-刚果出血热小鼠模型中评估腺病毒介导的病毒蛋白抑制剂的两种接种途径。
IF 5 4区 医学
Virus research Pub Date : 2024-05-14 DOI: 10.1016/j.virusres.2024.199398
F. Scholte, J. Spengler, S. R. Welch, Jessica R. Harmon, J. Coleman-McCray, Katherine A Davies, S. Pegan, Joel M. Montgomery, C. Spiropoulou, É. Bergeron
{"title":"Evaluation of two inoculation routes of an adenovirus-mediated viral protein inhibitor in a Crimean-Congo hemorrhagic fever mouse model.","authors":"F. Scholte, J. Spengler, S. R. Welch, Jessica R. Harmon, J. Coleman-McCray, Katherine A Davies, S. Pegan, Joel M. Montgomery, C. Spiropoulou, É. Bergeron","doi":"10.1016/j.virusres.2024.199398","DOIUrl":"https://doi.org/10.1016/j.virusres.2024.199398","url":null,"abstract":"","PeriodicalId":23483,"journal":{"name":"Virus research","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140981113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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