Host-virus interaction: a new role for microRNAs.

Host-virus interaction: a new role for microRNAs.
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DOI:
10.1186/1742-4690-3-68
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发表时间:
2006-10-11
期刊:
影响因子:
3.3
通讯作者:
Brahmachari SK
Brahmachari SK
中科院分区:
医学2区
文献类型:
--
作者:
Scaria V;Hariharan M;Maiti S;Pillai B;Brahmachari SK

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microRNAs(miRNAs)是一类长度为18-23个核苷酸的非编码RNA,在多种生物学过程中发挥重要作用。最近的报道也揭示了microRNA在复杂的宿主-病原体相互作用网络中作为关键效应子的作用。有证据表明,病毒和宿主都编码microRNA。病毒的繁殖和存活完全依赖于宿主细胞机制,这也使它们对细胞环境的变幻莫测非常敏感,如小RNA介导的干扰。它也给了病毒一个机会来对抗和/或调节宿主以适应其需要。因此,在宿主-病原体界面处通过miRNA-mRNA串扰可能的相互作用的范围很大。这些相互作用可以通过基因表达、突变和多态性的变化在宿主中进一步微调。在病原体中,高突变率增加了相互作用网络的复杂性。虽然关于病毒感染中microRNA介导的串扰的证据刚刚出现,但它提供了一个巨大的机会,不仅可以了解宿主-病原体相互作用的复杂性,以及对病毒嗜性,潜伏期和肿瘤发生的可能解释,而且还可以开发新的生物标志物和治疗方法。
MicroRNAs (miRNAs) are a new class of 18–23 nucleotide long non-coding RNAs that play critical roles in a wide spectrum of biological processes. Recent reports also throw light into the role of microRNAs as critical effectors in the intricate host-pathogen interaction networks. Evidence suggests that both virus and hosts encode microRNAs. The exclusive dependence of viruses on the host cellular machinery for their propagation and survival also make them highly susceptible to the vagaries of the cellular environment like small RNA mediated interference. It also gives the virus an opportunity to fight and/or modulate the host to suite its needs. Thus the range of interactions possible through miRNA-mRNA cross-talk at the host-pathogen interface is large. These interactions can be further fine-tuned in the host by changes in gene expression, mutations and polymorphisms. In the pathogen, the high rate of mutations adds to the complexity of the interaction network. Though evidence regarding microRNA mediated cross-talk in viral infections is just emerging, it offers an immense opportunity not only to understand the intricacies of host-pathogen interactions, and possible explanations to viral tropism, latency and oncogenesis, but also to develop novel biomarkers and therapeutics.
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