Hameed, A;Gallagher, LB;Dolan, E;O'Sullivan, J;Ruiz-Hernandez, E;Duffy, GP;Kelly, H

2019

June

Journal Of Microencapsulation

Insulin-like growth factor-1 (IGF-1) poly (lactic-co-glycolic acid) (PLGA) microparticles - development, characterisation, and in vitro assessment of bioactivity for cardiac applications

Published

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STEM-CELL CONTROLLED-RELEASE INFARCTED MYOCARDIUM HEART-FAILURE DELIVERY DRUG NANOPARTICLES MICROSPHERES BIOMATERIAL REGENERATE

Aim: The aim of this study was to evaluate the formulation of a synthetic IGF-1 (pIGF-1) in PLGA microparticles (MP). Methods: Poly (lactic-co-glycolic acid) (PLGA) MPs loaded with pIGF-1 were prepared, characterised and evaluated using double emulsion solvent evaporation method. Results: Spherical MPs showed an average particle size of 2 mu m, encapsulation efficiency (EE) of 67% and 50% degradation over 15 days. With a view to enhancing retention in the myocardium, the MP formulation was encapsulated in a cross-linked hyaluronic acid hydrogel. pIGF-1 released from MPs and from MPs suspended in hyaluronic acid hydrogel remained bioactive, determined by a significant increase in cellular proliferation of c-kit(+) cells. Conclusion: This formulation has potential for loco-regional delivery to damaged myocardium to promote the survival of cardiomyocytes.

0265-2048

10.1080/02652048.2019.1622605