Betrixaban is a broad anti-virus inhibitor by activating innate immunity

Betrixaban is a broad anti-virus inhibitor by activating innate immunity

The innate immune system serves as the first line of defense against viral infections. Type I interferon (IFN-I) signaling, in particular, plays a crucial role in mediating antiviral immunity. Here, we identify Betrixaban (BT), a novel small-molecule compound that activates innate immune responses,...

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Bibliographic Details
Main Authors: Shiyu Hu, Yang Zhao, Xingyu Chen, Haocheng Wang, Wenjun Hu, Rong Huang, Jian Yang, Chenxi Niu, Xuefei Guo, Fuping You
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-08-01
Series:Frontiers in Cellular and Infection Microbiology
Subjects:
broad-spectrum antiviral
Betrixaban
FXa
innate immunity
VSV
Online Access:https://www.frontiersin.org/articles/10.3389/fcimb.2025.1603530/full
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Summary:The innate immune system serves as the first line of defense against viral infections. Type I interferon (IFN-I) signaling, in particular, plays a crucial role in mediating antiviral immunity. Here, we identify Betrixaban (BT), a novel small-molecule compound that activates innate immune responses, leading to broad-spectrum antiviral effects. BT induces IFN-β production and upregulates interferon-stimulated genes (ISGs), effectively suppressing the replication of multiple viruses, including vesicular stomatitis virus (VSV), herpes simplex virus type 1 (HSV-1), murine hepatitis virus strain A59 (MHV-A59), encephalomyocarditis virus (EMCV), and influenza A virus (IAV). BT’s antiviral activity relies on innate immune activation, with IRF3 playing a key role. The antiviral effect was significantly reduced upon loss of ISGs induction, including Mx1 and Mx2. In vivo, BT treatment markedly induced IFNB1 expression across multiple mouse tissues and significantly inhibited viral replication in VSV-infected wild-type mice, confirming the essential role of innate antiviral immune activation. These findings establish BT as a potent stimulator of the innate immune system, demonstrating broad-spectrum antiviral potential and highlighting its promise as a therapeutic agent.
ISSN:2235-2988

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