Abstract:
:Zika virus (ZIKV) is an emerging mosquito-borne flavivirus that poses significant threats to global public health. Macrophages and dendritic cells are both key sentinel cells in the host immune response and play critical roles in the pathogenesis of flavivirus infections. Recent studies showed that ZIKV could productively infect monocyte-derived dendritic cells (moDCs), but the role of macrophages in ZIKV infection remains incompletely understood. In this study, we first compared ZIKV infection in monocyte-derived macrophages (MDMs) and moDCs derived from the same donors. We demonstrated that while both MDMs and moDCs were susceptible to epidemic (Puerto Rico) and pre-epidemic (Uganda) strains of ZIKV, virus replication was largely restricted in MDMs but not in moDCs. ZIKV induced significant apoptosis in moDCs but not MDMs. The restricted virus replication in MDMs was not due to inefficient virus entry but was related to post-entry events in the viral replication cycle. In stark contrast with moDCs, ZIKV failed to inhibit STAT1 and STAT2 phosphorylation in MDMs. This resulted in the lack of efficient antagonism of the host type I interferon-mediated antiviral responses. Importantly, depletion of STAT2 but not STAT1 in MDMs significantly rescued the replication of ZIKV and the prototype flavivirus yellow fever virus. Overall, our findings revealed a differential interplay between macrophages and dendritic cells with ZIKV. While dendritic cells may be exploited by ZIKV to facilitate virus replication, macrophages restricted ZIKV infection.
journal_name
Emerg Microbes Infectjournal_title
Emerging microbes & infectionsauthors
Yang D,Chu H,Lu G,Shuai H,Wang Y,Hou Y,Zhang X,Huang X,Hu B,Chai Y,Yuen TT,Zhao X,Lee AC,Ye Z,Li C,Chik KK,Zhang AJ,Zhou J,Yuan S,Chan JFdoi
10.1080/22221751.2021.1929503keywords:
["STAT1","STAT2","Zika","dendritic cells","flavivirus","interferon signaling","macrophages"]subject
Has Abstractpub_date
2021-12-01 00:00:00pages
1024-1037issue
1issn
2222-1751journal_volume
10pub_type
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