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- W2509907629 abstract "Cell-penetrating peptides (CPP) are received a lot of attention as an intracellular delivery tool for hydrophilic molecules such as drugs, proteins, and DNAs. We designed and synthesized nona-arginine analogues 1-5 [FAM-β-Ala-(l-Arg-l-Arg-l-Pro)3-(Gly)3-NH2 (1), FAM-β-Ala-(l-Arg-l-Arg-l-Pro(NH2))3-(Gly)3-NH2 (2), FAM-β-Ala-(l-Arg-l-Arg-l-Pro(Gu))3-(Gly)3-NH2 (3), FAM-β-Ala-(l-Arg)2-(l-Pro(Gu))2-(l-Arg)4-l-Pro(Gu)-(Gly)3-NH2 (4), and FAM-β-Ala-(l-Arg)6-(l-Pro(Gu))3-(Gly)3-NH2 (5)] containing l-proline (l-Pro) or cationic proline derivatives (l-Pro(NH2) and l-Pro(Gu)), and investigated their cell-penetrating abilities. Interestingly, only peptide 3 having the side-chain guanidinyl l-Pro(Gu) exhibited a secondary structural change in cellular environment. Specifically, peptide 3 formed a random structure in hydrophilic conditions, whereas it formed a helical structure under amphipathic conditions. Furthermore, during cellular permeability tests, peptide 3 demonstrated greater cell-penetrating activity than other peptides and effectively transported plasmid DNA into HeLa cells. Thus, l-Pro(Gu)-containing peptide 3 may be a useful candidate as a gene delivery carrier." @default.
- W2509907629 created "2016-09-16" @default.
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- W2509907629 date "2016-09-09" @default.
- W2509907629 modified "2023-10-11" @default.
- W2509907629 title "Development of a Cell-penetrating Peptide that Exhibits Responsive Changes in its Secondary Structure in the Cellular Environment" @default.
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- W2509907629 doi "https://doi.org/10.1038/srep33003" @default.
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