Encapsulation of oligonucleotides in stealth Me.PEG-PLA50 nanoparticles by complexation with structured oligopeptides

Two oligopeptides with alternating hydrophilic-hydrophobic amino acids, H-(leu-lys-lys-leu)10-OH and H-(leu-lys-leu-lys)10-OH, were shown to have higher affinity for a 13-mer oligonucleotide than H-(pro-lys-lys-leu)10-OH used as a control. This increased affinity was correlated to the secondary stru...

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Published inDrug delivery Vol. 3; no. 3; p. 187
Main Authors Emile, C, Bazile, D, Herman, F, Helene, C, Veillard, M
Format Journal Article
LanguageEnglish
Published England 1996
Subjects
Nanoparticles
Poly(l-Lysine)
Oligopeptides
Nanoencapsulation
Oligonucleotides
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Abstract Two oligopeptides with alternating hydrophilic-hydrophobic amino acids, H-(leu-lys-lys-leu)10-OH and H-(leu-lys-leu-lys)10-OH, were shown to have higher affinity for a 13-mer oligonucleotide than H-(pro-lys-lys-leu)10-OH used as a control. This increased affinity was correlated to the secondary structure adopted by the oligopeptides (respectively, α-helix and β-sheet for LKKL and LK) when complexed to the oligonucleotide. Tight ion-pairing association between the phosphate groups of the oligonucleotide and the lysines of the oligopeptide led to efficient encapsulation of the resulting oligonucleotide/oligopeptide non-water-soluble complex in hydrophobic Me.PEG-PLA50 nanoparticles, by coprecipitation with the co-polymer.
AbstractList Two oligopeptides with alternating hydrophilic-hydrophobic amino acids, H-(leu-lys-lys-leu)10-OH and H-(leu-lys-leu-lys)10-OH, were shown to have higher affinity for a 13-mer oligonucleotide than H-(pro-lys-lys-leu)10-OH used as a control. This increased affinity was correlated to the secondary structure adopted by the oligopeptides (respectively, α-helix and β-sheet for LKKL and LK) when complexed to the oligonucleotide. Tight ion-pairing association between the phosphate groups of the oligonucleotide and the lysines of the oligopeptide led to efficient encapsulation of the resulting oligonucleotide/oligopeptide non-water-soluble complex in hydrophobic Me.PEG-PLA50 nanoparticles, by coprecipitation with the co-polymer.
Author Emile, C
Veillard, M
Herman, F
Bazile, D
Helene, C
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Keywords Nanoparticles
Poly(l-Lysine)
Oligopeptides
Nanoencapsulation
Oligonucleotides
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Snippet Two oligopeptides with alternating hydrophilic-hydrophobic amino acids, H-(leu-lys-lys-leu)10-OH and H-(leu-lys-leu-lys)10-OH, were shown to have higher...
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Title Encapsulation of oligonucleotides in stealth Me.PEG-PLA50 nanoparticles by complexation with structured oligopeptides
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