Linked Life Data

18325585

Source:http://linkedlifedata.com/resource/pubmed/id/18325585

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
16
pubmed:dateCreated
2008-3-31
pubmed:abstractText
The effect of blending two silk proteins, regenerated Bombyx mori fibroin and synthetic spidroin containing RGD, on silk film material structure (beta-sheet content) and properties (solubility), as well as on biological response (osteoblast adhesion, proliferation and differentiation) was investigated. Although the elasticity and strength of silks make them attractive candidates for bone, ligament, and cartilage tissue engineering applications, silk proteins generally lack bioactive peptides for enhancing cell functions. Thus, a synthetic spider silk, spidroin, containing two RGD cell adhesive sequences (RGD-spidroin) was engineered. RGD-spidroin was blended with different ratios of fibroin and spun coat into films on glass coverslips. beta-Sheet formation, contact angle, surface topography and RGD surface presentation were characterized and correlated with cell behavior. We found that the amount of beta-sheet formation was directly related to the RGD-spidroin content of the blends after annealing, with the pure RGD-spidroin demonstrating the highest amount of beta-sheet content. The increased beta-sheet content improved film stability under culture conditions. A new visualization technique demonstrated that the RGD presentation on the film surface was affected by both the RGD-spidroin content and annealing conditions. It was determined that 10mass% RGD-spidroin was necessary to improve film stability and to achieve osteoblast attachment and differentiation.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0142-9612
pubmed:author
pubmed:issnType
Print
pubmed:volume
29
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2556-63
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Characterization and optimization of RGD-containing silk blends to support osteoblastic differentiation.
pubmed:affiliation
Polymers Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899-8543, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, N.I.H., Extramural