Nature Communications (Jun 2024)

High-throughput screening unveils nitazoxanide as a potent PRRSV inhibitor by targeting NMRAL1

  • Zhanding Cui,
  • Jinlong Liu,
  • Chong Xie,
  • Tao Wang,
  • Pu Sun,
  • Jinlong Wang,
  • Jiaoyang Li,
  • Guoxiu Li,
  • Jicheng Qiu,
  • Ying Zhang,
  • Dengliang Li,
  • Ying Sun,
  • Juanbin Yin,
  • Kun Li,
  • Zhixun Zhao,
  • Hong Yuan,
  • Xingwen Bai,
  • Xueqing Ma,
  • Pinghua Li,
  • Yuanfang Fu,
  • Huifang Bao,
  • Dong Li,
  • Qiang Zhang,
  • Zaixin Liu,
  • Yimei Cao,
  • Jing Zhang,
  • Zengjun Lu

DOI
https://doi.org/10.1038/s41467-024-48807-y
Journal volume & issue
Vol. 15, no. 1
pp. 1 – 12

Abstract

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Abstract Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) poses a major threat to the global swine industry, yet effective prevention and control measures remain elusive. This study unveils Nitazoxanide (NTZ) as a potent inhibitor of PRRSV both in vitro and in vivo. Through High-Throughput Screening techniques, 16 potential anti-PRRSV compounds are identified from a library comprising FDA-approved and pharmacopeial drugs. We show that NTZ displays strong efficacy in reducing PRRSV proliferation and transmission in a swine model, alleviating viremia and lung damage. Additionally, Tizoxanide (TIZ), the primary metabolite of NTZ, has been identified as a facilitator of NMRAL1 dimerization. This finding potentially sheds light on the underlying mechanism contributing to TIZ’s role in augmenting the sensitivity of the IFN-β pathway. These results indicate the promising potential of NTZ as a repurposed therapeutic agent for Porcine Reproductive and Respiratory Syndrome (PRRS). Additionally, they provide valuable insights into the antiviral mechanisms underlying NTZ’s effectiveness.