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Pàgina inicial > Articles > Articles publicats > Engineering a nanostructured nucleolin-binding peptide for intracellular drug delivery in triple-negative breast cancer stem cells |
Data: | 2020 |
Resum: | Five peptide ligands of four different cell surface receptors (nucleolin, CXCR1, CMKLR1, and CD44v6) have been evaluated as targeting moieties for triple-negative human breast cancers. Among them, the peptide F3, derived from phage display, promotes the fast and efficient internalization of a genetically fused green fluorescent protein (GFP) inside MDA-MB-231 cancer stem cells in a specific receptor-dependent fashion. The further engineering of this protein into the modular construct F3-RK-GFP-H6 and the subsequent construct F3-RK-PE24-H6 resulted in self-assembling polypeptides that organize as discrete and regular nanoparticles. These materials, 15-20 nm in size, show enhanced nucleolin-dependent cell penetrability. We show that the F3-RK-PE24-H6, based on the Pseudomonas aeruginosa exotoxin A (PE24) as a core functional domain, is highly cytotoxic over target cells. The combination of F3, the cationic peptide (RK), and the toxin domain PE24 in such unusual presentation appears as a promising approach to cell-targeted drug carriers in breast cancers and addresses selective drug delivery in otherwise difficult-to-treat triple-negative breast cancers. |
Ajuts: | Instituto de Salud Carlos III PI18/00871 Instituto de Salud Carlos III PI15/00272 Instituto de Salud Carlos III PI17/02242 Ministerio de Economía y Competitividad BIO2016-76063-R Ministerio de Economía y Competitividad SAF2014-60138-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1439 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-229 Agència de Gestió d'Ajuts Universitaris i de Recerca 2018FI_B2_00051 |
Nota: | Altres ajuts: La Fundació Marató TV3 (TV32013-133930-1-2), AECC post-doctoral fellowship (AIO14142112SERA) i ICREA Academia award |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Self-assembling polypeptides ; Targeting ; Nucleolin ; Triple-negative breast cancer ; Cancer stem cells |
Publicat a: | ACS applied materials & interfaces, Vol. 12, Issue 5 (February 2020) , p. 5381-5388, ISSN 1944-8252 |
Article. Postprint 33 p, 1.1 MB |
Material acompanyament 4 p, 923.4 KB |