Jonna B Westover, Kie Hoon Jung, Shuli Mao, Alexander A Kolykhalov, Gregory R Bluemling, Michael G Natchus, George R Painter, Brian B Gowen
{"title":"Oral 4'-fluorouridine rescues mice from advanced lymphocytic choriomeningitis virus infection.","authors":"Jonna B Westover, Kie Hoon Jung, Shuli Mao, Alexander A Kolykhalov, Gregory R Bluemling, Michael G Natchus, George R Painter, Brian B Gowen","doi":"10.1016/j.antiviral.2025.106122","DOIUrl":null,"url":null,"abstract":"<p><p>Lymphocytic choriomeningitis virus (LCMV) can cause severe, life-threatening infection and disease in organ transplant recipients and other immunocompromised individuals. Additionally, significant developmental and neurological disabilities, vision impairments, and miscarriages can occur as a direct result of LCMV infection during pregnancy. Currently, there are no approved antiviral drugs to protect at-risk populations. Here, we report on the potent in vitro activity of the 4'-fluorouridine (4'-FlU) ribonucleoside analog against several strains of LCMV, with EC<sub>90</sub> values in the low micromolar range. In vivo, oral once-daily 4'-FlU treatments provided robust efficacy in mice challenged with LCMV when administered as late as 5 days post-infection. Our findings extend the broad-spectrum antiviral capacity of 4'-FlU and support the compound's further development for treating LCMV and other severe arenavirus infections.</p>","PeriodicalId":8259,"journal":{"name":"Antiviral research","volume":" ","pages":"106122"},"PeriodicalIF":4.5000,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Antiviral research","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/j.antiviral.2025.106122","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHARMACOLOGY & PHARMACY","Score":null,"Total":0}
引用次数: 0
Abstract
Lymphocytic choriomeningitis virus (LCMV) can cause severe, life-threatening infection and disease in organ transplant recipients and other immunocompromised individuals. Additionally, significant developmental and neurological disabilities, vision impairments, and miscarriages can occur as a direct result of LCMV infection during pregnancy. Currently, there are no approved antiviral drugs to protect at-risk populations. Here, we report on the potent in vitro activity of the 4'-fluorouridine (4'-FlU) ribonucleoside analog against several strains of LCMV, with EC90 values in the low micromolar range. In vivo, oral once-daily 4'-FlU treatments provided robust efficacy in mice challenged with LCMV when administered as late as 5 days post-infection. Our findings extend the broad-spectrum antiviral capacity of 4'-FlU and support the compound's further development for treating LCMV and other severe arenavirus infections.
期刊介绍:
Antiviral Research is a journal that focuses on various aspects of controlling viral infections in both humans and animals. It is a platform for publishing research reports, short communications, review articles, and commentaries. The journal covers a wide range of topics including antiviral drugs, antibodies, and host-response modifiers. These topics encompass their synthesis, in vitro and in vivo testing, as well as mechanisms of action. Additionally, the journal also publishes studies on the development of new or improved vaccines against viral infections in humans. It delves into assessing the safety of drugs and vaccines, tracking the evolution of drug or vaccine-resistant viruses, and developing effective countermeasures. Another area of interest includes the identification and validation of new drug targets. The journal further explores laboratory animal models of viral diseases, investigates the pathogenesis of viral diseases, and examines the mechanisms by which viruses avoid host immune responses.