Hepatitis B Virus Utilizes a Retrograde Trafficking Route via the Trans-Golgi Network to Avoid Lysosomal Degradation

被引：7

作者：

Li, Ying-Yi ^{[1
]}

Kuroki, Kazuyuki ^{[1
]}

Shimakami, Tetsuro ^{[1
]}

Murai, Kazuhisa ^{[2
]}

Kawaguchi, Kazunori ^{[1
]}

Shirasaki, Takayoshi ^{[2
]}

Nio, Kouki ^{[1
]}

Sugimoto, Saiho ^{[1
]}

Nishikawa, Tomoki ^{[1
]}

Okada, Hikari ^{[1
]}

Orita, Noriaki ^{[1
]}

Takayama, Hideo ^{[1
]}

Wang, Ying ^{[2
]}

Bich, Phuong Doan Thi ^{[1
]}

Ishida, Astuya ^{[1
]}

Iwabuchi, Sadahiro ^{[3
]}

Hashimoto, Shinichi ^{[3
]}

Shimaoka, Takeshi ^{[4
]}

Tabata, Noriko ^{[5
]}

Watanabe-Takahashi, Miho ^{[6
]}

Nishikawa, Kiyotaka ^{[6
]}

Yanagawa, Hiroshi ^{[5
]}

Seiki, Motoharu ^{[1
]}

Matsushima, Kouji ^{[4
]}

Yamashita, Taro ^{[1
]}

Kaneko, Shuichi ^{[1
]}

Honda, Masao ^{[1
,2
,7
]}

机构：

[1] Kanazawa Univ, Dept Gastroenterol, Grad Sch Med, Kanazawa, Japan

[2] Kanazawa Univ, Dept Clin Lab Med, Grad Sch Hlth Med, Kanazawa, Japan

[3] Wakayama Med Univ, Inst Adv Med, Dept Mol Pathophysiol, Wakayama, Japan

[4] Tokyo Univ Sci, Res Inst Biomed Sci, Div Mol Regulat Inflammatory & Immune Dis, Chiba, Japan

[5] Purotech Bio Inc, Yokohama, Kanagawa, Japan

[6] Doshisha Univ, Dept Mol Life Sci, Kyoto, Japan

[7] Kanazawa Univ, Grad Sch Med Sci, Dept Clin Lab Med, Kodatsuno 5-11-80, Kanazawa 9200942, Japan

来源：

CELLULAR AND MOLECULAR GASTROENTEROLOGY AND HEPATOLOGY | 2023年 / 15卷 / 03期

关键词：

cccDNA; DOCK11; Retrograde Trafficking; AGAP2; INFECTION; IDENTIFICATION; MEMBRANE; PROTEIN; ROLES; CDC42;

D O I：

10.1016/j.jcmgh.2022.10.008

中图分类号：

R57 [消化系及腹部疾病];

学科分类号：

摘要：

BACKGROUND & AIMS: Hepatitis B virus (HBV) infection is difficult to cure owing to the persistence of covalently closed circular viral DNA (cccDNA). We performed single-cell tran-scriptome analysis of newly established HBV-positive and HBV-negative hepatocellular carcinoma cell lines and found that dedicator of cytokinesis 11 (DOCK11) was crucially involved in HBV persistence. However, the roles of DOCK11 in the HBV lifecycle have not been clarified. METHODS: The cccDNA levels were measured by Southern blotting and real-time detection polymerase chain reaction in various hepatocytes including PXB cells by using an HBV-infected model. The retrograde trafficking route of HBV capsid was investigated by super-resolution microscopy, proximity ligation assay, and time-lapse analysis. The down-stream molecules of DOCK11 and underlying mechanism were examined by liquid chromatography-tandem mass spectrom-etry, immunoblotting, and enzyme-linked immunosorbent assay. RESULTS: The cccDNA levels were strongly increased by DOCK11 overexpression and repressed by DOCK11 suppres-sion. Interestingly, DOCK11 functionally associated with retrograde trafficking proteins in the trans-Golgi network (TGN), Arf-GAP with GTPase domain, ankyrin repeat, and pleckstrin homology domain-containing protein 2 (AGAP2), and ADP-ribosylation factor 1 (ARF1), together with HBV capsid, to open an alternative retrograde trafficking route for HBV from early endosomes (EEs) to the TGN and then to the endoplasmic reticulum (ER), thereby avoiding lysosomal degradation. Clinically, DOCK11 levels in liver biopsies from patients with chronic hepatitis B were significantly reduced by entecavir treatment, and this reduction correlated with HBV surface antigen levels. CONCLUSIONS: HBV uses a retrograde trafficking route via EEs-TGN-ER for infection that is facilitated by DOCK11 and serves to maintain cccDNA. Therefore, DOCK11 is a potential therapeutic target to prevent persistent HBV infection.

引用

页码：533 / 558

页数：26

共 28 条

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