文献类型： 外文期刊

作者： Zhu, Zixiang ¹ ; Mao, Ruoqing ¹ ; Liu, Baohong ¹ ; Liu, Huanan ¹ ; Shi, Zhengwang ¹ ; Zhang, Kunpeng ¹ ; Liu, Huisheng ¹ ; Zhang, Danyang ¹ ; Liu, Jia ¹ ; Zhao, Zhenxiang ¹ ; Li, Kangli ¹ ; Yang, Fan ¹ ; Cao, Weijun ¹ ; Zhang, Xiangle ¹ ; Shen, Chaochao ¹ ; Sun, Dehui ¹ ; Wang, Liyuan ⁴ ; Tian, Hong ¹ ; Ru, Yi ¹ ; Feng, Tao ¹ ; He, Jijun ¹ ; Guo, Jianhong ¹ ; Zhang, Keshan ¹ ; Tang, Zhonglin ⁴ ; Zhang, Shilei ¹ ; Ding, Chan ⁵ ; Han, Jun ⁶ ; Zheng, Haixue ¹ ;

作者机构： 1.Lanzhou Univ, Chinese Acad Agr Sci, State Key Lab Anim Dis Control & Prevent, Coll Vet Med,Lanzhou Vet Res Inst, Lanzhou 730046, Peoples R China

2.Chinese Acad Agr Sci, Lanzhou Vet Res Inst, African Swine Fever Reg Lab China, Lanzhou 730046, Peoples R China

3.Gansu Prov Res Ctr Basic Disciplines Pathogen Biol, Lanzhou 730046, Peoples R China

4.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen Branch, Guangdong Lab Lingnan Modern Agr, Shenzhen 518124, Peoples R China

5.Chinese Acad Agr Sci, Shanghai Vet Res Inst, Shanghai 200241, Peoples R China

6.China Agr Univ, Coll Vet Med, Minist Agr & Rural Affairs, Key Lab Anim Epidemiol, Beijing 100193, Peoples R China

关键词： African swine fever virus; single- cell RNA sequencing; host antiviral response; monocytes; cellular tropism

期刊名称：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA （ 影响因子：11.1； 五年影响因子：12.0 ）

ISSN： 0027-8424

年卷期： 2024 年 121 卷 10 期

页码：

收录情况： SCI

摘要： African swine fever, one of the major viral diseases of swine, poses an imminent threat to the global pig industry. The high - efficient replication of the causative agent African swine fever virus (ASFV) in various organs in pigs greatly contributes to the disease. However, how ASFV manipulates the cell population to drive high - efficient replication of the virus in vivo remains unclear. Here, we found that the spleen reveals the most severe pathological manifestation with the highest viral loads among various organs in pigs during ASFV infection. By using single- cell - RNA- sequencing technology and multiple methods, we determined that macrophages and monocytes are the major cell types infected by ASFV in the spleen, showing high viral - load heterogeneity. A rare subpopulation of immature monocytes represents the major population infected at late infection stage. ASFV causes massive death of macrophages, but shifts its infection into these monocytes which significantly arise after the infection. The apoptosis, interferon response, and antigen- presentation capacity are inhibited in these monocytes which benefits prolonged infection of ASFV in vivo. Until now, the role of immature monocytes as an important target by ASFV has been overlooked due to that they do not express classical monocyte marker CD14. The present study indicates that the shift of viral infection from macrophages to the immature monocytes is critical for maintaining prolonged ASFV infection in vivo. This study sheds light on ASFV tropism, replication, and infection dynamics, and elicited immune response, which may instruct future research on antiviral strategies.