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HBV 诱导的免疫失衡在 HCC 发展中的作用。

HBV-Induced Immune Imbalance in the Development of HCC.

机构信息

Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, Division of Molecular Medicine, School of Life Sciences, University of Science and Technology of China, Hefei, China.

Institute of Immunology, University of Science and Technology of China, Hefei, China.

出版信息

Front Immunol. 2019 Aug 27;10:2048. doi: 10.3389/fimmu.2019.02048. eCollection 2019.

Abstract

Chronic hepatitis B virus (HBV) infection is one of the high-risk factors for human HCC. Despite the integration of virus DNA and the oncoprotein HBx, chronic necroinflammation and hepatocellular regeneration account for hepatocarcinogenesis. As a non-cytopathic virus, HBV is extensively recognized to mediate chronic liver damage through abnormal immune attack. However, the mechanisms driving HBV infection to HCC are poorly understood. During chronic HBV infection in humans, the adaptive immunity changes from immune tolerance to progressive immune activation, inactivation, reactivation and exhaustion, all of which may be the immune pathogenic factors for the development of HCC. Recently, the immunopathogenic mechanisms were described in mouse HBV-induced HCC models, which is absolutely dependent on the presence of HBV-specific T cell response and NK cell-derived IFN-γ, findings which are consistent with the observations from CHB and HCC patients. In this review, we summarize recent research progression on the HBV-specific CD8 T cells, and also CD4 T cells, B cells and non-specific immune cells and molecules underlying chronic HBV infection and eventual HCC development to demonstrate the pathogenesis of HBV-induced immune imbalance. Based on the progression, we discussed the potential of immune-based therapies and their challenges in the treatment of HBV-related HCC, including the checkpoint inhibition, genetically modified T cell transfer, therapeutic vaccines and metabolic modulation.

摘要

慢性乙型肝炎病毒 (HBV) 感染是人类 HCC 的高危因素之一。尽管病毒 DNA 和癌蛋白 HBx 发生了整合,但慢性坏死性炎症和肝细胞再生导致了肝癌的发生。作为一种非致病变病毒,HBV 被广泛认为通过异常免疫攻击导致慢性肝损伤。然而,HBV 感染导致 HCC 的机制尚不清楚。在人类慢性 HBV 感染期间,适应性免疫从免疫耐受转变为进行性免疫激活、失活、再激活和衰竭,所有这些都可能是 HCC 发展的免疫致病因素。最近,在小鼠 HBV 诱导的 HCC 模型中描述了免疫发病机制,这绝对依赖于 HBV 特异性 T 细胞反应和 NK 细胞衍生的 IFN-γ 的存在,这与 CHB 和 HCC 患者的观察结果一致。在这篇综述中,我们总结了最近关于慢性 HBV 感染和最终 HCC 发展中 HBV 特异性 CD8 T 细胞以及 CD4 T 细胞、B 细胞和非特异性免疫细胞和分子的研究进展,以证明 HBV 诱导的免疫失衡的发病机制。基于这些进展,我们讨论了免疫疗法在治疗 HBV 相关 HCC 中的潜力及其挑战,包括检查点抑制、基因修饰 T 细胞转移、治疗性疫苗和代谢调节。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c2f/6718466/4836a604967f/fimmu-10-02048-g0001.jpg

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