Transactivation of human endogenous retrovirus K (HERV-K) by KSHV promotes Kaposi's sarcoma development.

Transactivation of human endogenous retrovirus K (HERV-K) by KSHV promotes Kaposi's sarcoma development.
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KSHV 反式激活人内源性逆转录病毒 K (HERV-K) 可促进卡波西肉瘤的发展

DOI:
10.1038/s41388-018-0282-4
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发表时间:
2018-08
期刊:
影响因子:
8
通讯作者:
Qin Z
Qin Z
中科院分区:
医学1区
文献类型:
--
作者:
Dai L;Del Valle L;Miley W;Whitby D;Ochoa AC;Flemington EK;Qin Z

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卡波西肉瘤相关疱疹病毒(KSHV)是几种人类癌症的病原体,如卡波西肉瘤(KS),它代表了最常见的艾滋病相关恶性肿瘤,缺乏有效的治疗方案。尽管它在艾滋病恶性肿瘤中的作用很明显,但只有一小部分KSHV感染的患者最终会发展成这些肿瘤,这一事实意味着KSHV相关癌症的发展需要额外的辅助因子。在目前的研究中,我们首次证明KSHV从头感染或病毒潜伏蛋白能够通过多种细胞信号通路和转录因子反式激活人内源性逆转录病毒K(HERV-K)。此外,我们发现HERV-K反式激活,特别是其编码的致癌NP 9蛋白的激活,在KSHV的发病机制和肿瘤发生中起着重要作用。我们的数据提供了创新的见解HERV-K反式激活的机制,有助于病毒肿瘤的发生,这可能是一个有前途的目标KS治疗。
Kaposi’s Sarcoma-associated Herpesvirus (KSHV) is the causative agent of several human cancers such as Kaposi’s Sarcoma (KS), which represents the most common AIDS-associated malignancy that lacks effective treatment options. Despite its clear role in AIDS-malignancies, the fact that only a small set of KSHV-infected patients will eventually develop these tumors implies that additional co-factors are required for the development of KSHV-related cancers. In the current study, we demonstrate for the first time that KSHV de novo infection or viral latent proteins are able to transactivate Human Endogenous Retrovirus K (HERV-K) through a variety of cellular signaling pathways and transcriptional factors. Moreover, we found that HERV-K transactivation, particularly activation of its encoded oncogenic NP9 protein, plays an important role in KSHV pathogenesis and tumorigenesis in vitro and in vivo. Our data provide innovative insights into the mechanisms of HERV-K transactivation contributing to viral oncogenesis, which may represent a promising target for KS treatment.
血红素加氧酶-1在卡波西肉瘤相关疱疹病毒发病机制和致瘤性中的作用
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发表时间: 2016-03-01
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