Xanthohumol Inhibits PRRSV Proliferation and Alleviates Oxidative Stress Induced by PRRSV Via the Nrf2-HMOX1 Axis

Overview

Journal Vet Res

Publisher Biomed Central

Specialty Veterinary Medicine

Date 2019 Sep 12

PMID 31506103

Citations 27

Authors

Xuewei Liu

Zhongbao Song

Juan Bai

Hans Nauwynck

Yongxiang Zhao

Ping Jiang

Affiliations

Soon will be listed here.

Abstract

Porcine reproductive and respiratory syndrome virus (PRRSV) is a prevalent and endemic swine pathogen that causes significant economic losses in the global swine industry. Commercial vaccines provide limited protection against this virus, and no highly effective therapeutic drugs are yet available. In this study, we first screened a library of 386 natural products and found that xanthohumol (Xn), a prenylated flavonoid found in hops, displayed high anti-PRRSV activity by inhibiting PRRSV adsorption onto and internalization into cells. Transcriptome sequencing revealed that Xn treatment stimulates genes associated with the antioxidant response in the nuclear factor-erythroid 2-related factor 2 (Nrf2) signalling pathway. Xn causes increased expression of Nrf2, HMOX1, GCLC, GCLM, and NQO1 in Marc-145 cells. The action of Xn against PRRSV proliferation depends on Nrf2 in Marc-145 cells and porcine alveolar macrophages (PAMs). This finding suggests that Xn significantly inhibits PRRSV proliferation and decreases viral-induced oxidative stress by activating the Nrf2-HMOX1 pathway. This information should be helpful for developing a novel prophylactic and therapeutic strategy against PRRSV infection.

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