Insulin Delivery from Glucose-Responsive, Self-Assembled, Polyamine Nanoparticles: Smart “Sense-and-Treat” Nanocarriers Made Easy

CORTEZ, M. LORENA; AZZARONI, OMAR; AGAZZI, MAXIMILIANO L.; MARMISOLLÉ, WALDEMAR A.; HERRERA, SANTIAGO E.; TAGLIAZUCCHI, MARIO

CHEMISTRY-A EUROPEAN JOURNAL

WILEY-V C H VERLAG GMBH

Año: 2020 vol. 26 p. 2456 - 2463

0947-6539

Polyamine?salt aggregates (PSA) are biomimetic soft materials that have attracted great attention due to their straightforward fabrication methods, high drug-loading efficiencies, and attractive properties for pH-triggered release. Herein, a simple and fast multicomponent self-assembly process was used to construct cross-linked poly(allylamine hydrochloride)/phosphate PSAs (hydrodynamic diameter of 360 nm) containing glucose oxidase enzyme, as a glucose-responsive element, and human recombinant insulin, as a therapeutic agent for the treatment of diabetes mellitus (GI-PSA). The addition of increasing glucose concentrations promotes the release of insulin due to the disassembly of the GI-PSAs triggered by the catalytic in situ formation of gluconic acid. Under normoglycemia, the GI-PSA integrity remained intact for at least 24 h, whereas hyperglycemic conditions resulted in 100 % cargo release after 4 h of glucose addition. This entirely supramolecular strategy presents great potential for the construction of smart glucose-responsive delivery nanocarriers.