Sequence selective recognition of double-stranded RNA at physiologically relevant conditions using PNA-peptide conjugates.
Sequence selective recognition of double-stranded RNA at physiologically relevant conditions using PNA-peptide conjugates.
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DOI:
10.1021/cb400144x
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发表时间:
2013-08-16
影响因子:
4
通讯作者:
Rozners, Eriks
中科院分区:
文献类型:
--
作者:
Muse, Oluwatoyosi;Zengeya, Thomas;Mwaura, Juddy;Hnedzko, Dziyana;McGee, Dennis W.;Grewer, Christof T.;Rozners, Eriks
Conjugation of short peptide nucleic acids (PNA) with tetralysine peptides strongly enhanced triple helical binding to RNA at physiologically relevant conditions. The PNA hexamers and heptamers carrying cationic nucleobase and tetralysine modifications displayed high binding affinity for complementary double-stranded RNA without compromising sequence selectivity. The PNA-peptide conjugates had unique preference for binding double-stranded RNA, while having little, if any, affinity for double-stranded DNA. The cationic PNAs were efficiently taken up by HEK293 cells, while little uptake was observed for unmodified PNA.
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