PMID- 36026486 OWN - NLM STAT- MEDLINE DCOM- 20220913 LR - 20220927 IS - 1553-7374 (Electronic) IS - 1553-7366 (Print) IS - 1553-7366 (Linking) VI - 18 IP - 8 DP - 2022 Aug TI - Echovirus 11 infection induces pyroptotic cell death by facilitating NLRP3 inflammasome activation. PG - e1010787 LID - 10.1371/journal.ppat.1010787 [doi] LID - e1010787 AB - Echovirus 11 (ECHO 11) is a positive-strand RNA virus belonging to the genus Enterovirus of the family Picornaviridae. ECHO 11 infections can cause severe inflammatory illnesses in neonates, including severe acute hepatitis with coagulopathy. The activation of NLRP3 inflammasome is important for host defense against invading viruses, which also contributes to viral pathogenicity. However, whether and how ECHO 11 induces NLRP3 inflammasome activation remains unclear. In this study, we isolated a clinical strain of ECHO 11 from stools of an ECHO 11-infected newborn patient with necrotizing hepatitis. This virus shared 99.95% sequence identity with the previously published ECHO 11 sequence. The clinically isolated ECHO 11 can efficiently infect liver cells and strongly induces inflammation. Moreover, we showed that ECHO 11 induced IL-1beta secretion and pyroptosis in cells and mouse bone marrow-derived macrophages (BMDMs). Furthermore, ECHO 11 infection triggered NLRP3 inflammasome activation, as evidenced by cleavages of GSDMD, pro-IL-1beta and pro-caspase-1, and the release of LDH. ECHO 11 2B protein was required for NLRP3 inflammasome activation via interacting with NLRP3 to facilitate the inflammasome complex assembly. In vivo, expression of ECHO 11 2B also activated NLRP3 inflammasome in the murine liver. Besides, 2Bs of multiple EVs can also interact with NLRP3 and induce NLRP3 inflammasome activation. Together, our findings demonstrate a mechanism by which ECHO 11 induces inflammatory responses by activating NLRP3 inflammasome, providing novel insights into the pathogenesis of ECHO 11 infection. FAU - Wang, Chong AU - Wang C AD - Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, China. AD - State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei, China. FAU - Yang, Ruyi AU - Yang R AD - State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei, China. FAU - Yang, Fengxia AU - Yang F AD - Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, China. FAU - Han, Yang AU - Han Y AD - Joint Laboratory of Infectious Diseases and Health, Wuhan Institute of Virology & Wuhan Jinyintan Hospital, Wuhan Jinyintan Hospital, Wuhan, Hubei, China. FAU - Ren, Yujie AU - Ren Y AD - State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei, China. FAU - Xiong, Xiaobei AU - Xiong X AD - State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei, China. FAU - Wang, Xingyun AU - Wang X AD - Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, China. FAU - Bi, Yidan AU - Bi Y AD - Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, China. FAU - Li, Lijun AU - Li L AD - Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, China. FAU - Qiu, Yang AU - Qiu Y AD - State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei, China. FAU - Xu, Yi AU - Xu Y AD - Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, China. FAU - Zhou, Xi AU - Zhou X AUID- ORCID: 0000-0002-3846-5079 AD - State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220826 PL - United States TA - PLoS Pathog JT - PLoS pathogens JID - 101238921 RN - 0 (Inflammasomes) RN - 0 (Interleukin-1beta) RN - 0 (NLR Family, Pyrin Domain-Containing 3 Protein) RN - 0 (Nlrp3 protein, mouse) SB - IM MH - Animals MH - Enterovirus B, Human MH - *Inflammasomes/metabolism MH - Interleukin-1beta/metabolism MH - Macrophages/metabolism MH - Mice MH - NLR Family, Pyrin Domain-Containing 3 Protein/genetics/metabolism MH - *Pyroptosis PMC - PMC9455886 COIS- The authors have declared that no competing interests exist. EDAT- 2022/08/27 06:00 MHDA- 2022/09/14 06:00 PMCR- 2022/08/26 CRDT- 2022/08/26 14:46 PHST- 2022/02/03 00:00 [received] PHST- 2022/08/01 00:00 [accepted] PHST- 2022/09/08 00:00 [revised] PHST- 2022/08/27 06:00 [pubmed] PHST- 2022/09/14 06:00 [medline] PHST- 2022/08/26 14:46 [entrez] PHST- 2022/08/26 00:00 [pmc-release] AID - PPATHOGENS-D-22-00213 [pii] AID - 10.1371/journal.ppat.1010787 [doi] PST - epublish SO - PLoS Pathog. 2022 Aug 26;18(8):e1010787. doi: 10.1371/journal.ppat.1010787. eCollection 2022 Aug.