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File: /var/www/html/application/controllers/Detail.php
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File: /var/www/html/application/helpers/my_audit_helper.php
File: /var/www/html/application/controllers/Detail.php
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Nairovirus RNA sequences expressed by a Semliki Forest virus replicon induce RNA interference in tick cells. | LitMetric
We report the successful infection of the cell line ISE6 derived from Ixodes scapularis tick embryos by the tick-borne Hazara virus (HAZV), a nairovirus in the family Bunyaviridae. Using a recombinant Semliki Forest alphavirus replicon that replicates in these cells, we were able to inhibit replication of HAZV, and we showed that this blockage is mediated by the replication of the Semliki Forest alphavirus replicon; the vector containing the HAZV nucleoprotein gene in sense or antisense orientation efficiently inhibited HAZV replication. Moreover, expression of a distantly related nucleoprotein gene from Crimean-Congo hemorrhagic fever nairovirus failed to induce HAZV silencing, indicating that the inhibition is sequence specific. The resistance of these cells to replicate HAZV correlated with the detection of specific RNase activity and 21- to 24-nucleotide-long small interfering RNAs. Altogether, these results strongly suggest that pathogen-derived resistance can be established in the tick cells via a mechanism of RNA interference.
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