![]() |
|||||||||||||||
![]() |
Cerca | Lliura | Ajuda | Servei de Biblioteques | Sobre el DDD | Català English Español |
Pàgina inicial > Articles > Articles publicats > Endosomal escape of protein nanoparticles engineered through humanized histidine-rich peptides |
Data: | 2020 |
Resum: | Poly-histidine peptides such as H6 (HHHHHH) are used in protein biotechnologies as purification tags, protein-assembling agents and endosomal-escape entities. The pleiotropic properties of such peptides make them appealing to design protein-based smart materials or nanoparticles for imaging or drug delivery to be produced in form of recombinant proteins. However, the clinical applicability of H6-tagged proteins is restricted by the potential immunogenicity of these segments. In this study, we have explored several humanized histidine-rich peptides in tumor-targeted modular proteins, which can specifically bind and be internalized by the target cells through the tumoral marker CXCR4. We were particularly interested in exploring how protein purification, self-assembling and endosomal escape perform in proteins containing the variant histidine-rich tags. Among the tested candidates, the peptide H5E (HEHEHEHEH) is promising as a good promoter of endosomal escape of the associated full-length protein upon endosomal internalization. The numerical modelling of cell penetration and endosomal escape of the tested proteins has revealed a negative relationship between the amount of protein internalized into target cells and the efficiency of cytoplasmic release. This fact demonstrates that the His-mediated, proton sponge-based endosomal escape saturates at moderate amounts of internalized protein, a fact that might be critical for the design of protein materials for cytosolic molecular delivery. |
Ajuts: | Ministerio de Ciencia e Innovación BIO2016-76063-R Instituto de Salud Carlos III PIE15//00028 Instituto de Salud Carlos III PI18/00650 Instituto de Salud Carlos III PI15/00272 Agència de Gestió d'Ajuts Universitaris i de Recerca 2019/FI_B 00352 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-865 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-229 |
Nota: | Altres ajuts: EU COST Action CA 17140. AV received an ICREA ACADEMIA award |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Protein materials ; Nanoparticles ; Genetic design ; Endosomal escape ; Poly-histidines |
Publicat a: | Science China Materials, Vol. 63, issue 4 (April 2020) , p. 644-653, ISSN 2199-4501 |
Postprint 22 p, 684.9 KB |