Title Surfaceome CRISPR screen identifies OLFML3 as a rhinovirus-inducible IFN antagonist.
Author Mei, Hong; Zha, Zhao; Wang, Wei; Xie, Yusang; Huang, Yuege; Li, Wenping; Wei, Dong; Zhang, Xinxin; Qu, Jieming; Liu, Jia
Journal Genome Biol Publication Year/Month 2021-Oct
PMID 34686207 PMCID PMC8532573
Affiliation + expend 1.Shanghai Institute for Advanced Immunochemical Studies and School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, People's Republic of China.

BACKGROUND: Rhinoviruses (RVs) cause more than half of common colds and, in some cases, more severe diseases. Functional genomics analyses of RVs using siRNA or genome-wide CRISPR screen uncovered a limited set of host factors, few of which have proven clinical relevance. RESULTS: Herein, we systematically compare genome-wide CRISPR screen and surface protein-focused CRISPR screen, referred to as surfaceome CRISPR screen, for their efficiencies in identifying RV host factors. We find that surfaceome screen outperforms the genome-wide screen in the success rate of hit identification. Importantly, using the surfaceome screen, we identify olfactomedin-like 3 (OLFML3) as a novel host factor of RV serotypes A and B, including a clinical isolate. We find that OLFML3 is a RV-inducible suppressor of the innate immune response and that OLFML3 antagonizes type I interferon (IFN) signaling in a SOCS3-dependent manner. CONCLUSION: Our study suggests that RV-induced OLFML3 expression is an important mechanism for RV to hijack the immune system and underscores surfaceome CRISPR screen in identifying viral host factors.

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