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A microarray approach to the identification of polyurethanes for the isolation of human skeletal progenitor cells and augmentation of skeletal cell growth.

Abstract：

:The present study has examined the efficacy of a polymer microarray platform to screen a library of polyurethanes for applications such as human skeletal progenitor cell isolation and surface modification of tissue engineering scaffolds to enhance skeletal cell growth and differentiation. Analysis of polyurethane microarrays incubated with adult human bone marrow-derived STRO-1+ skeletal progenitor cells identified 31 polyurethanes (from the entire library of 120 polyurethanes) capable of binding to the STRO-1+ cells. Four polyurethanes (out of the 31 identified in the previous screen) were able to selectively immobilise cells of the STRO-1+ fraction from the heterogeneous human bone marrow mononuclear cell population. These four polyurethanes were highly selective for the STRO-1+ fraction of human bone marrow as they failed to bind STRO-1+ immature osteoblast-like MG63 cells, the STRO-1+ fraction of human fetal skeletal cells and differentiated osteoblast-like SaOs cells. Culture of human bone marrow-derived STRO-1+ cells on fibres of Polyglycolic acid (PGA) fleece surface modified by polyurethane adsorption, in osteogenic conditions, enhanced the expression of early osteogenic genes. Similarly, surface modification of PGA fleece fibres by polyurethane adsorption increased the responsiveness of MG63 cells, cultured on this scaffold, to 1,25 dihydroxy Vitamin D3, as demonstrated by enhanced Osteocalcin expression.

journal_name

Biomaterials

journal_title

Biomaterials

authors

Tare RS,Khan F,Tourniaire G,Morgan SM,Bradley M,Oreffo RO

doi

10.1016/j.biomaterials.2008.10.038

subject

Has Abstract

pub_date

2009-02-01 00:00:00

pages

1045-55

issue

6

eissn

0142-9612

issn

1878-5905

pii

S0142-9612(08)00834-X

journal_volume

30

pub_type

杂志文章

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