The central role of IFI204 in IFN-β release and autophagy activation during Mycobacterium bovis infection

Liu Chunfa, Sun Xin, Li Qiang, Srinand Sreevatsan, Lifeng Yang, Deming Zhao, Xiangmei Zhou

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Mycobacterium bovis (M. bovis) is the pathogen of animals and humans that can replicate in the phagosomes of myeloid cells. Cytosolic detection of bacterial products plays a crucial role in initiating the innate immune response, including autophagy activation and interferon-β (IFN-β) release. Although IFN-β release and autophagy activation have been reported during mycobacterium infection, the mechanisms underlying remains poorly defined. Here, we demonstrated that IFN-β release increases in macrophages exposed to M. bovis and this requires the activation of the DNA sensor of interferon-γ inducible protein 204 (IFI204). Knockdown of the IFI204 in immortalized and primary murine macrophages blocked IFN-β production and autophagy marker LC3 expression. Thus, our results indicate that the IFI204 is an important sensor for innate immune responses of M. bovis infection.

Original languageEnglish (US)
Article number169
JournalFrontiers in Cellular and Infection Microbiology
Volume7
Issue numberMAY
DOIs
StatePublished - May 5 2017

Bibliographical note

Funding Information:
We thank China Agricultural University, for providing the BSL-3 Laboratories for experiments using M. bovis culture and infection. We thank Dr. Syed Zahid Ali Shah for his enthusiastic help in language modification of this manuscript. We also thank Dr. Ruichao Yue, Dr. Chaosi Li, and Dr. Fushan Shi for their valuable suggestions and critical reading of this manuscript. This work was supported by the MoSTRCUK international cooperation project (Project No. 2013DFG32500), National Natural Science Foundation of China (Project No.31572487), Funding of State Key Lab of Agrobiotechnology (Project No. 2012SKLAB06-14). 2015 CAU Foreign Experts Major Projects (Project No: 2012z018). High-end Foreign Experts Recruitment Program (Project No: GDW20151100036).

Publisher Copyright:
© 2017 Chunfa, Xin, Qiang, Sreevatsan, Yang, Zhao and Zhou.

Keywords

  • Autophagy
  • DNA sensor
  • IFI204
  • IFN-β
  • M. bovis

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