PepFect15, a novel endosomolytic cell-penetrating peptide for oligonucleotide delivery via scavenger receptors
2012 (English)In: International Journal of Pharmaceutics, ISSN 0378-5173, E-ISSN 1873-3476, Vol. 441, no 1-2, 242-247 p.Article in journal (Refereed) Published
Gene-regulatory biomolecules such as splice-correcting oligonucleotides and anti-microRNA oligonucleotides are important tools in the struggle to understand and treat genetic disorders caused by defective gene expression or aberrant splicing. However, oligonucleotides generally suffer from low bioavailability, hence requiring efficient and non-toxic delivery vectors to reach their targets. Cell-penetrating peptides constitute a promising category of carrier molecules for intracellular delivery of bioactive cargo. In this study we present a novel cell-penetrating peptide, PepFect15, comprising the previously reported PepFect14 peptide modified with endosomolytic trifluoromethylquinoline moieties to facilitate endosomal escape. Pepfect15 efficiently delivers both splice-correcting oligonucleotides and anti-microRNA oligonucleotides into cells through a non-covalent complexation strategy. To our knowledge this is the first work that describes peptide-mediated anti-microRNA delivery. The peptide and its cargo form stable, negatively charged nanoparticles that are taken up by cells largely through scavenger receptor type A mediated endocytosis.
Place, publisher, year, edition, pages
2012. Vol. 441, no 1-2, 242-247 p.
Cell-penetrating peptide, Drug delivery, Splice correction, MicroRNA, Endosomal escape, Scavenger receptor
Research subject Neurochemistry with Molecular Neurobiology
IdentifiersURN: urn:nbn:se:su:diva-84942DOI: 10.1016/j.ijpharm.2012.11.037ISI: 000314054200028PubMedID: 23200958OAI: oai:DiVA.org:su-84942DiVA: diva2:582054
FunderSwedish Research CouncilSwedish Cancer SocietySwedish Foundation for Strategic Research