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PARP-1 controls NK cell recruitment to the site of viral infection
Qiyang Shou, … , Xiaopei Huang, Yiping Yang
Qiyang Shou, … , Xiaopei Huang, Yiping Yang
Published June 20, 2019
Citation Information: JCI Insight. 2019;4(12):e121291. https://doi.org/10.1172/jci.insight.121291.
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Research Article Immunology Virology

PARP-1 controls NK cell recruitment to the site of viral infection

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Abstract

The activation and recruitment of NK cells to the site of viral infection are crucial for virus control. However, it remains largely unknown what controls the recruitment of the activated NK cells to the infection site. In a model of intraperitoneal infection with vaccinia virus (VV), we showed that poly(ADP-ribose) polymerase-1 (PARP-1), a sensor of DNA damage, is critical for NK cell recruitment to the site of infection and viral control in vivo. We further demonstrated that PARP-1 promotes the production of CCL2 and that the CCL2-CCR2 axis is essential for NK cell recruitment to the infection site. In addition, we demonstrated that peritoneal macrophages are the main producer of PARP-1–dependent CCL2 secretion. Mechanistically, PARP-1 functions as a regulator of NF-κB by promoting its nuclear translocation and binding to its response sequences in macrophages upon VV infection. Taken together, our results reveal a potentially previously unknown role for PARP-1–dependent CCL2 production in NK cell migration and viral control and may provide important insights into the design of effective NK cell–based therapies for viral infections and cancer.

Authors

Qiyang Shou, Huiying Fu, Xiaopei Huang, Yiping Yang

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