Segmented Filamentous Bacteria Prevent and Cure Rotavirus Infection

Zhenda Shi, Jun Zou, Zhan Zhang, Xu Zhao, Juan Noriega, Benyue Zhang, Chunyu Zhao, Harshad Ingle, Kyle Bittinger, Lisa M. Mattei, Andrea J. Pruijssers, Richard K. Plemper, Timothy J. Nice, Megan T. Baldridge, Terence S. Dermody, Benoit Chassaing, Andrew T. Gewirtz

Research output: Contribution to journalArticlepeer-review

106 Scopus citations


Rotavirus (RV) encounters intestinal epithelial cells amidst diverse microbiota, opening possibilities of microbes influencing RV infection. Although RV clearance typically requires adaptive immunity, we unintentionally generated RV-resistant immunodeficient mice, which, we hypothesized, reflected select microbes protecting against RV. Accordingly, such RV resistance was transferred by co-housing and fecal transplant. RV-protecting microbiota were interrogated by heat, filtration, and antimicrobial agents, followed by limiting dilution transplant to germ-free mice and microbiome analysis. This approach revealed that segmented filamentous bacteria (SFB) were sufficient to protect mice against RV infection and associated diarrhea. Such protection was independent of previously defined RV-impeding factors, including interferon, IL-17, and IL-22. Colonization of the ileum by SFB induced changes in host gene expression and accelerated epithelial cell turnover. Incubation of RV with SFB-containing feces reduced infectivity in vitro, suggesting direct neutralization of RV. Thus, independent of immune cells, SFB confer protection against certain enteric viral infections and associated diarrheal disease.

Original languageEnglish (US)
Pages (from-to)644-658.e13
Issue number3
StatePublished - Oct 17 2019


  • fecal transplant
  • germ-free mice
  • infectious diarrhea
  • microbiota-virus interactions
  • rotavirus
  • segmented filamentous bacteria
  • viral gastroenteritis

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology


Dive into the research topics of 'Segmented Filamentous Bacteria Prevent and Cure Rotavirus Infection'. Together they form a unique fingerprint.

Cite this