Resveratrol‐Loaded Poly(d,l‐Lactide‐Co‐Glycolide) Microspheres Integrated in a Hyaluronic Acid Injectable Hydrogel for Cartilage Regeneration

Advanced NanoBiomed Research

Sean McMahon¹  Patrick Duffy¹  Xiaolin Li²  Wenxin Wang²  Sigen A²  Qian Xu²  Xianqing Wang²  Jing Lyu²  Xi Wang²  Thomas Dürig³  Vivian Bi³  Ningyi N. Chen³ 

[1] Ashland Specialties Ireland Ltd. National Science Park Building V, Dublin Road, Petitswood, Mullingar Co. Westmeath N91 F6PD Ireland;Charles Institute of Dermatology School of Medicine University College Dublin Dublin 4 Ireland;Pharmaceutical R&D Ashland Specialty Ingredients G.P. 500 Hercules Road, 8136A/260 Wilmington DE 19808 USA;

关键词: cartilage regeneration;    injectable hydrogel;    microspheres;    poly(d,l-lactide-co-glycolide);    resveratrol;    sustained releases;   

DOI  :  10.1002/anbr.202100070

来源: DOAJ

【 摘 要 】

Cartilage tissue has a relatively low regenerative capacity which leads to a need for disease‐modifying active pharmaceutical ingredients (APIs) which can stimulate its regeneration and more urgently, effective ways of introducing APIs into the cartilage defects. Herein, an integrated system is proposed in which a hyaluronic acid (HA)‐based injectable hydrogel scaffold is embedded with API‐loaded poly(d,l‐lactide‐co‐glycolide) microspheres (PLGA MPs). This new injectable drug delivery system can successfully deliver APIs locally, increase drug retention time, and promote endogenous cartilage regeneration. In this study, resveratrol (RSV), a small hydrophobic compound is introduced as the selected API. PLGAs with differing copolymer ratios and endgroups are evaluated to study their effects on particle formation, RSV encapsulation, and drug release kinetics. This system is optimized as a 1 month sustained release formulation. In addition, the long‐acting chondrogenic induction of the RSV‐loaded system is evaluated by coculturing with cartilage‐derived progenitor cells in vitro. PLGA–RSV MPs stimulated the expression of cartilage‐related genes and the production of the cartilage‐specific extracellular matrix. This integrated system shows great potential as an injectable formulation for long‐acting chondrogenesis and endogenous cartilage tissue regeneration.

【 授权许可】

Unknown