文献类型： 外文期刊
作者： Jia, Kaifang 1 ; Wang, Jinyang 1 ; Jiang, Dan 1 ; Ding, Xiangrui 1 ; Zhao, Qiaoling 1 ; Shen, Dongxu 1 ; Qiu, Zhiyong 1 ; Zhang, Xuelian 1 ; Lu, Cheng 3 ; Qian, Heying 1 ; Xia, Dingguo 1 ;
作者机构： 1.Jiangsu Univ Sci & Technol, Sch Biotechnol, Jiangsu Key Lab Sericultural & Anim Biotechnol, Zhenjiang 212100, Peoples R China
2.Chinese Acad Agr Sci, Sericultural Sci Res Ctr, Key Lab Silkworm & Mulberry Genet Improvement, Minist Agr & Rural Affairs, Zhenjiang 212100, Peoples R China
3.Southwest Univ, Key Lab Sericultural Biol & Genet Breeding, Minist Agr, Chongqing 400715, Peoples R China
关键词： Antiviral; BmNPV; Bombyx mori; PAT4; Cellular autophagy; BmTORC1
期刊名称：JOURNAL OF INVERTEBRATE PATHOLOGY （ 影响因子：2.4； 五年影响因子：3.0 ）
ISSN： 0022-2011
年卷期： 2025 年 208 卷
页码：
收录情况： SCI
摘要： Proton-assisted amino acid transporter 4 (PAT4) is a member of the solute carrier (SLC) 36 family, which mediates the transmembrane transport of amino acids and their derivatives. However, the function of PAT4 in Bombyx mori is not clear. In this study, BmPAT4 was cloned and identified using PCR technology. Its open reading frame (ORF) includes 1,395 bp, encoding 464 amino acid (Aa). Moreover, the sequence of BmPAT4 has the highest similarity with wild Bombyx.mandarina, Spodoptera frugiperda and Spodoptera litura, and it has ten transmembrane domains. BmPAT4 was localized in the cell membrane and expressed in all tissues of the silkworm. After Bombyx mori nuclear polyhedrosis virus (BmNPV) infection, the expression of BmPAT4 in midgut, hemolymph and fat body was significantly up-regulated. In addition, overexpression of BmPAT4 in BmN cells could significantly inhibit the proliferation of BmNPV, and the expression of several genes in autophagy pathway decreased significantly. On the contrary, down-regulation of BmPAT4 expression by RNA interference can promote BmNPV replication and proliferation, and the expression of key genes in autophagy pathway is significantly increased. This is the first time to report that BmPAT4 has an antiviral effect in silkworm. Moreover, the silkworm activates BmTORC1 via BmPAT4, which inhibits autophagy in silkworm cells, resulting in a lack of energy and raw materials for BmNPV infection and replication in cells.
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