Encapsulation of Adenovirus BMP2-Transduced Cells with PEGDA Hydrogels Allows Bone Formation in the Presence of Immune Response.

Journal Article

Gene therapy approaches have been difficult to implement due to pre-existing immunity against the virus used for delivery. To circumvent this problem, a cell-based approach was developed that avoided the use of free virus within the animal. However, even cells transduced in vitro with E1- to E3-deleted adenovirus encoding bone morphogenetic protein 2 (AdBMP2) resulted in the production of virus-neutralizing antibodies in mice. Furthermore, when mice received an intramuscular injection of nonencoding adenovirus (AdEmpty)-transduced cells, AdBMP2-transduced cells were unable to launch bone formation when an intramuscular injection of these BMP2-producing cells was delivered 1 week later. This phenomenon was not observed in NOD/SCID mice, and could be overcome in C57BL/6 mice by encapsulating the adenovirus-transduced cells in a nondegradable hydrogel poly(ethylene glycol) diacrylate (PEGDA). Data collectively suggest that PEGDA hydrogel encapsulation of AdBMP2-transduced cells prevents pre-existing immunity from suppressing BMP2-induced bone formation.

Full Text

Duke Authors

Cited Authors

  • Alvarez-Urena, P; Davis, E; Sonnet, C; Henslee, G; Gugala, Z; Strecker, EV; Linscheid, LJ; Cuchiara, M; West, J; Davis, A; Olmsted-Davis, E

Published Date

  • March 2017

Published In

Volume / Issue

  • 23 / 5-6

Start / End Page

  • 177 - 184

PubMed ID

  • 27967655

Electronic International Standard Serial Number (EISSN)

  • 1937-335X

International Standard Serial Number (ISSN)

  • 1937-3341

Digital Object Identifier (DOI)

  • 10.1089/ten.tea.2016.0277

Language

  • eng