Peptide-based delivery of nucleic acids: Design, mechanism of uptake and applications to splice-correcting oligonucleotides

S. Abes, H. Moulton, J. Turner, P. Clair, J. P. Richard, P. Iversen, M. J. Gait, B. Lebleu

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


CPPs (cell-penetrating peptides) have given rise to much interest for the delivery of biomolecules such as peptides, proteins or ONs (oligonucleotides). CPPs and their conjugates were initially thought to translocate through the cell membrane by a non-endocytotic mechanism which has recently been re-evaluated. Basic-amino-acid-rich CPPs first interact with cell-surface proteoglycans before being internalized by endocytosis. Sequestration and degradation in endocytotic vesicles severely limits the cytoplasmic and nuclear delivery of the conjugated biomolecules. Accordingly, splicing correction by CPP-conjugated steric-block ON analogues is inefficient in the absence of endosomolytic agents. New arginine-rich CPPs allowing efficient splicing correction by conjugated PNAs (peptide nucleic acids) or PMO (phosphorodiamidate morpholino oligomer) steric blockers in the absence of endosomolytic agents have recently been defined in our group and are currently being characterized. They offer promising leads for the development of efficient cellular delivery vectors for therapeutic steric-block ON analogues.

Original languageEnglish (US)
Pages (from-to)53-55
Number of pages3
JournalBiochemical Society transactions
Issue number1
StatePublished - Feb 2007
Externally publishedYes


  • Cell-penetrating peptide (CPP)
  • Endocytosis
  • Nucleic acid delivery
  • Peptide-based delivery
  • Splice-correcting oligonucleotide

ASJC Scopus subject areas

  • Biochemistry


Dive into the research topics of 'Peptide-based delivery of nucleic acids: Design, mechanism of uptake and applications to splice-correcting oligonucleotides'. Together they form a unique fingerprint.

Cite this