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Specific Inhibition of Viral MicroRNAs by Carbon Dots-Mediated Delivery of Locked Nucleic Acids for Therapy of Virus-Induced Cancer.
ACS Nano ( IF 15.8 ) Pub Date : 2020-01-08 , DOI: 10.1021/acsnano.9b06333
Enguo Ju 1 , Tingting Li 1 , Zhen Liu 2 , Suzane Ramos da Silva 1 , Shan Wei 1 , Xinquan Zhang 1 , Xian Wang 1 , Shou-Jiang Gao 1
Affiliation  

Viruses are associated with up to 15% of human cancer. MicroRNAs (miRNAs) encoded by numerous oncogenic viruses including Kaposi's sarcoma-associated herpesvirus (KSHV) play significant roles in regulating the proliferation and survival of virus-induced cancer cells, hence representing attractive therapeutic targets. Here, we report that specific inhibition of viral miRNAs by carbon dots (Cdots)-mediated delivery of locked nucleic acid (LNA)-based suppressors inhibit the proliferation of KSHV-associated primary effusion lymphoma (PEL) cells. Specifically, a combination of Cdots-LNAs to knock down the levels of KSHV miR-K12-1, miR-K12-4, and miR-K12-11 induces apoptosis and inhibits proliferation of PEL cells. Significantly, these Cdots-LNAs effectively inhibit the initiation of PEL and regress established PEL in a xenograft mouse model. These results demonstrate the feasibility of using Cdots to deliver miRNA suppressors for targeting viral cancers. Our study with viral miRNAs as targets may provide the scientific basis for using antisense drugs for human cancers associated with oncogenic viruses.

中文翻译:

通过碳点介导的锁定核酸递送治疗病毒诱导的癌症对病毒微小 RNA 的特异性抑制。

病毒与高达 15% 的人类癌症有关。由包括卡波西肉瘤相关疱疹病毒 (KSHV) 在内的众多致癌病毒编码的微小 RNA (miRNA) 在调节病毒诱导的癌细胞的增殖和存活方面发挥重要作用,因此代表了有吸引力的治疗靶点。在这里,我们报告了碳点 (Cdots) 介导的锁核酸 (LNA) 抑制因子对病毒 miRNA 的特异性抑制抑制了 KSHV 相关原发性渗出性淋巴瘤 (PEL) 细胞的增殖。具体而言,Cdots-LNA 的组合可降低 KSHV miR-K12-1、miR-K12-4 和 miR-K12-11 的水平,诱导细胞凋亡并抑制 PEL 细胞的增殖。重要的是,这些 Cdots-LNA 有效地抑制了 PEL 的启动并使异种移植小鼠模型中建立的 PEL 退化。这些结果证明了使用 Cdots 提供 miRNA 抑制因子以靶向病毒癌症的可行性。我们以病毒 miRNA 为靶点的研究可能为使用反义药物治疗与致癌病毒相关的人类癌症提供科学依据。
更新日期:2020-01-09
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