title: Computational nanomedicine for mechanistic elucidation of bilayer nanoparticle-mediated release for tissue engineering.
abstract: OBJECTIVE
  Temporal control of growth-factor release from nanoparticles is essential to many tissue engineering applications, yet remains a challenge due to its complicated behavior. The interplay between nanoparticle characteristics and release mechanisms can be captured using computational models. This study aims to develop two novel models to represent the release of bilayer nanoparticles.
  
  
  METHODS
  Bilayer nanoparticles were prepared and characterized experimentally. 'Local volume averaging' and 'Geno-Mechanistic' models were developed and validated with experiments, and then used to identify critical release parameters and elucidate the release mechanisms.
  
  
  RESULTS
  Models presented an agreement with experimental data and successfully estimated transport/degradation parameters, which were closely associated with nanoparticle polymer mass ratio and crystallinity. Models suggested that despite relatively rapid core degradation, shell predominantly controlled overall release patterns.
  
  
  CONCLUSIONS
  The developed models and computational frameworks offer a great potential for optimizing/tuning bilayer polymeric nanoparticles for tissue engineering applications.
authors.affiliation: Division of Biomedical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada.|Saskatchewan Cerebrovascular Centre, Royal University Hospital, Saskatoon, SK, Canada.|Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada.|Department of Mechanical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Izadifar
authors.affiliation: Saskatchewan Cerebrovascular Centre, Royal University Hospital, Saskatoon, SK, Canada.|Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada.
authors.forename: Michael E
authors.initials: ME
authors.lastname: Kelly
authors.affiliation: Division of Biomedical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada.|Department of Mechanical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada.
authors.forename: Xiongbiao
authors.initials: X
authors.lastname: Chen
mesh_terms: D019295:Computational Biology; D016503:Drug Delivery Systems; D006801:Humans; D050997:Nanomedicine / Q000639:trends*; D053758:Nanoparticles / Q000737:chemistry* / Q000627:therapeutic use; D011108:Polymers / Q000737:chemistry; D023822:Tissue Engineering
chemical_list: D011108:Polymers
keywords: computational modeling; controlled release; nanomedicine; nanoparticle; regenerative medicine; tissue engineering