Dataset Information

HIST1H1C Regulates Interferon-? and Inhibits Influenza Virus Replication by Interacting with IRF3.

ABSTRACT: Influenza virus NS2 is well known for its role in viral ribonucleoprotein nuclear export; however, its function has not been fully understood. A recent study showed that NS2 might interact with HIST1H1C (H1C, H1.2). Histones have been found to affect influenza virus replication, such as the H2A, H2B, H3, and H4, but H1 has not been detected. Here, we found that H1C interacts with NS2 via its C-terminal in the nucleus and that H1C affects influenza virus replication. The H1N1 influenza virus replicates better in H1C knockout A549 cells compared to wild-type A549 cells, primarily because of the regulation of H1C on interferon-? (IFN-?). Further studies showed that the H1C phosphorylation mutant (T146A) decreases IFN-?, while H1C methylation mutants (K34A, K187A) increases IFN-? by releasing the nucleosome and promoting IRF3 binding to the IFN-? promoter. Interestingly, NS2 interacts with H1C, which reduces H1C-IRF3 interaction and results in the inhibition of IFN-? enhanced by H1C. In summary, our study reveals a novel function of H1C to regulate IFN-? and uncovers an underlying mechanism, which suggests H1C plays a role in epigenetic regulation. Moreover, our results suggest a novel mechanism for the influenza virus to antagonize the innate immune response by NS2.

SUBMITTER: Liu X

PROVIDER: S-EPMC5364133 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Publications

HIST1H1C Regulates Interferon-β and Inhibits Influenza Virus Replication by Interacting with IRF3.

Liu Xiaokun X Yang Cha C Hu Yong Y Lei Erming E Lin Xian X Zhao Lianzhong L Zou Zhong Z Zhang Anding A Zhou Hongbo H Chen Huanchun H Qian Ping P Jin Meilin M

Frontiers in immunology 20170324

Influenza virus NS2 is well known for its role in viral ribonucleoprotein nuclear export; however, its function has not been fully understood. A recent study showed that NS2 might interact with HIST1H1C (H1C, H1.2). Histones have been found to affect influenza virus replication, such as the H2A, H2B, H3, and H4, but H1 has not been detected. Here, we found that H1C interacts with NS2 <i>via</i> its C-terminal in the nucleus and that H1C affects influenza virus replication. The H1N1 influenza vir ...[more]

PMID: 28392790

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Dataset Information

HIST1H1C Regulates Interferon-? and Inhibits Influenza Virus Replication by Interacting with IRF3.

Publications

HIST1H1C Regulates Interferon-β and Inhibits Influenza Virus Replication by Interacting with IRF3.

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