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RNAi and antiviral defense in Drosophila: setting up a systemic immune response.

Abstract：

:RNA interference (RNAi) controls gene expression in eukaryotic cells and thus, cellular homeostasis. In addition, in plants, nematodes and arthropods it is a central antiviral effector mechanism. Antiviral RNAi has been well described as a cell autonomous response, which is triggered by double-stranded RNA (dsRNA) molecules. This dsRNA is the precursor for the silencing of viral RNA in a sequence-specific manner. In plants, systemic antiviral immunity has been demonstrated, however much less is known in animals. Recently, some evidence for a systemic antiviral response in arthropods has come to light. Cell autonomous RNAi may not be sufficient to reach an efficient antiviral response, and the organism might rely on the spread and uptake of an RNAi signal of unknown origin. In this review, we offer a perspective on how RNAi-mediated antiviral immunity could confer systemic protection in insects and we propose directions for future research to understand the mechanism of RNAi-immune signal sorting, spreading and amplification.

journal_name

Dev Comp Immunol

journal_title

Developmental and comparative immunology

authors

Karlikow M,Goic B,Saleh MC

doi

10.1016/j.dci.2013.05.004

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

85-92

issue

1

eissn

0145-305X

issn

1879-0089

pii

S0145-305X(13)00131-6

journal_volume

42

pub_type

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