1887

Abstract

We examined therapeutic and approaches using lentivirus-based packaging of small interfering RNAs (siRNAs) targeting the non-integrin laminin receptor mRNA for treatment and prevention of prion disorders. Transfection of N2aSc cells with recombinant plasmids expressing three different siRNAs, significantly reduced both the LRP (laminin receptor precursor) and PrP levels by approximately 40–60 %. Stereotactic intracerebral microinjection of recombinant lentiviral vectors LVsiRNA-LRP 7 and 9 into the cortex of C57BL/6 wild-type mice resulted in a significant reduction of the LR levels in the cortex 15 days post-injection by 62 and 82 %, respectively. Intracerebral RML inoculation of C57BL/6 mice after microinjection with recombinant lentiviral vector LVsiRNA-LRP 7 into the hippocampus resulted in a significant reduction of both LRP and PrP levels by 36 and 41 %, respectively, concomitant with a significant prolongation of the pre-clinical phase. Lentiviral vectors expressing siRNAs targeting LRP mRNA represent a novel delivery system for the treatment of transmissible spongiform encephalopathies.

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2009-01-01
2024-03-29
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vol. , part 1, pp. 269 - 274

mRNA sequence of the murine laminin receptor precursor [PDF](122 KB)



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