Coating electrospun collagen and gelatin fibers with perlecan domain I for increased growth factor binding.

Abstract:

:Electrospun natural polymer membranes were fabricated from collagen or gelatin coated with a bioactive recombinant fragment of perlecan, a natural heparan sulfate proteoglycan. The electrospinning process allowed the facile processing of a three-dimensional, porous fibril (2-6 microm in diameter) matrix suitable for tissue engineering. Laser scanning confocal microscopy revealed that osteoblast-like MG63 cells infiltrated the depth of the electrospun membrane evenly without visible apoptosis. Tissue engineering scaffolds ideally mimic the extracellular matrix; therefore, the electrospun membrane must contain both structural and functional matrix features. Fibers were coated, after processing, with perlecan domain I (PlnDI) to improve binding of basic fibroblast growth factor (FGF-2), which binds to native heparan sulfate chains on PlnDI. PlnDI-coated electrospun collagen fibers were ten times more effective than heparin-BSA collagen fibers at binding FGF-2. Because FGF-2 modulates cell growth, differentiation, migration and survival, the ability to effectively bind FGF-2 to an electrospun matrix is a key improvement in creating a successful tissue engineering scaffold.

journal_name

Biomacromolecules

journal_title

Biomacromolecules

authors

Casper CL,Yang W,Farach-Carson MC,Rabolt JF

doi

10.1021/bm061003s

subject

Has Abstract

pub_date

2007-04-01 00:00:00

pages

1116-23

issue

4

eissn

1525-7797

issn

1526-4602

journal_volume

8

pub_type

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