Therapeutic silencing of microRNA-122 in primates with chronic hepatitis C virus infection.

Therapeutic silencing of microRNA-122 in primates with chronic hepatitis C virus infection.
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DOI:
10.1126/science.1178178
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发表时间:
2010-01-08
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Ørum H
Ørum H
中科院分区:
其他
文献类型:
--
作者:
Lanford RE;Hildebrandt-Eriksen ES;Petri A;Persson R;Lindow M;Munk ME;Kauppinen S;Ørum H

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肝脏表达的microRNA-122(miR-122)是培养的肝细胞中丙型肝炎病毒(HCV)RNA积累所必需的,但其作为抗病毒干预靶点的潜力尚未得到评估。在这里,我们表明,用与miR-122互补的锁核酸(LNA)修饰的寡核苷酸(SPC 3649)治疗慢性感染的黑猩猩,可长期抑制HCV病毒血症,而没有证据表明治疗动物中存在病毒耐药性或副作用。此外,肝活检的转录组和组织学分析表明,miR-122种子位点对靶mRNA的去抑制,干扰素调节基因(IRGs)的下调和HCV诱导的肝脏病理学的改善。对SPC 3649治疗的延长的病毒学应答而没有HCV反弹,这为具有高耐药性屏障的新抗病毒治疗带来了希望。
The liver-expressed microRNA-122 (miR-122) is essential for hepatitis C virus (HCV) RNA accumulation in cultured liver cells, but its potential as a target for antiviral intervention has not been assessed. Here, we show that treatment of chronically infected chimpanzees with a locked nucleic acid (LNA)-modified oligonucleotide (SPC3649) complementary to miR-122 leads to long-lasting suppression of HCV viremia with no evidence for viral resistance or side effects in the treated animals. Furthermore, transcriptome and histological analyses of liver biopsies demonstrated derepression of target mRNAs with miR-122 seed sites, down-regulation of interferon-regulated genes (IRGs) and improvement of HCV-induced liver pathology. The prolonged virological response to SPC3649 treatment without HCV rebound holds promise of a new antiviral therapy with a high barrier to resistance.
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