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Spatial and Temporal Control of Tissue Growth using DNA Aptamers

Award Information
Agency: Department of Defense
Branch: Defense Health Agency
Contract: W81XWH-10-C-0160
Agency Tracking Number: O2-1058
Amount: $749,886.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: OSD09-H10
Solicitation Number: 2009.3
Timeline
Solicitation Year: 2009
Award Year: 2011
Award Start Date (Proposal Award Date): 2011-07-01
Award End Date (Contract End Date): N/A
Small Business Information
303 Bear Hill Road
Waltham, MA -
United States
DUNS: 004627316
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Vladimir Gilman
 Principal Scientist
 (781) 890-1338
 vgilman@infoscitex.com
Business Contact
 Cheryl Beecher
Title: Sr. Contracts Administrat
Phone: (781) 890-1338
Email: cbeecher@infoscitex.com
Research Institution
 Stub
Abstract

The clinical need for improved craniofacial reconstruction materials drives the development of new tissue engineering scaffold materials to alleviate inherent problems with the current best practice, allo- and auto-grafting. Infoscitex, in collaboration with Tufts University and Alacer Biomedical, Inc., presents a novel silk fibroin derived scaffolding material, customizable to many form factors with tunable material properties, coated with cell-specific aptamers to promote selective affixation and controlled maturation of mesenchymal stem cells, with the goal of reducing wound healing time and promoting vascularization through the depth of the scaffold. In Phase I, we isolated aptamers that selectively bound to highly conserved identity regions of mesenchymal stem cells and affixed these aptamers to the surface of silk fibroin samples. Furthermore we demonstrated successful in vitro colonization of the scaffolds after a three-week culture. More detailed data on the effects of modified scaffolds on physiology of the affixed cells is being generated. In Phase II, we will perform in vivo studies and demonstrate that with the addition of embedded chemokine signals, angiogenesis through the scaffold is enhanced, and wound healing is more rapid and complete, and injured tissue reconstruction is effective.

* Information listed above is at the time of submission. *

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