Development of PLGA-PEG-COOH and Gelatin-Based Microparticles Dual Delivery System and E-Beam Sterilization Effects for Controlled Release of BMP-2 and IGF-1

Yan Bai, Seyedsina Moeinzadeh, Sungwoo Kim, Youngbum Park, Elaine Lui, Hua Tan, Weiling Zhao, Xiaobo Zhou, Yunzhi Peter Yang

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A poly(lactic-co-glycolic acid)-poly(ethylene glycol)-carboxyl (PLGA-PEG-COOH) and gelatin-based microparticles (MPs) dual delivery system for release of bone morphogenetic protein-2 (BMP-2) and insulin-like growth factor-1 (IGF-1) is developed. The delivery system is characterized based on its morphology, loading capacity, encapsulation efficiency, and release kinetics. The effects of electron beam (EB) sterilization on BMP-2 and IGF-1-loaded MPs and their biological effects are examined. The synergistic effect of a controlled dual release of BMP-2 and IGF-1 on osteogenesis of human mesenchymal stem cells (MSCs) is evaluated. Encapsulation efficiency of growth factors into gelatin and PLGA-PEG-COOH MPs is in the range of 64.78% to 76.11%. E-beam sterilized growth factor delivery systems are effective in significantly promoting osteogenesis of MSCs, although E-beam sterilization decreases the bioactivity of growth factors in MPs by ≈22%. BMP-2 release behavior from gelatin MPs/PEG hydrogel shows a faster release (52.7%) than that of IGF-1 from the PLGA-PEG-COOH MPs/PEG hydrogel (27.3%). The results demonstrate that the gelatin and PLGA-PEG-COOH MPs-based delivery system can realize temporal release of therapeutic biomolecules by incorporating different growth factors into distinct microparticles. EB sterilization is an accessible method for sterilizing growth factors-loaded carriers, which can pave the way for implementing growth factor delivery in clinical applications.

Original languageEnglish
Article number2000180
JournalParticle and Particle Systems Characterization
Volume37
Issue number10
DOIs
Publication statusPublished - 2020 Oct 1

Bibliographical note

Publisher Copyright:
© 2020 Wiley-VCH GmbH

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics

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