Optimization of Polycistronic Anti-CCR5 Artificial microRNA Leads to Improved Accuracy of Its Lentiviral Vector Transfer and More Potent Inhibition of HIV-1 in CD4+ T-Cellsстатья Исследовательская статья

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Дата последнего поиска статьи во внешних источниках: 29 мая 2019 г.

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[1] Optimization of polycistronic anti-ccr5 artificial microrna leads to improved accuracy of its lentiviral vector transfer and more potent inhibition of hiv-1 in cd4+ t-cells / U. Felix, G. Dina, O. Denis et al. // Cells. — 2018. — Vol. 7, no. 2. — P. 10. C-C chemokine receptor type 5 (CCR5) is utilized by human immunodeficiency virus (HIV) as a co-receptor for cell entry. Suppression of the CCR5 gene by artificial microRNAs (amiRNAs) could confer cell resistance. In previous work, we created a lentivector that encoded the polycistron of two identical amiRNAs that could effectively suppress CCR5. However, tandem repeats in lentiviral vectors led to deletions of the repeated sequences during reverse transcription of the vector RNA. To solve this problem, we have created a new amiRNA against CCR5, mic1002, which has a different microRNA scaffold and targets a different sequence. Replacing one of the two identical tandem amiRNAs in the polycistron with the mic1002 amiRNA increased the accuracy of its lentiviral vector transfer while retaining its ability to effectively suppress CCR5. A lentiviral vector containing two heterogenic amiRNAs significantly inhibited HIV replication in a vector-transduced human CD4+ lymphocyte culture. [ DOI ]

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