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research
Amine functionalization of cholecyst-derived extracellular matrix with generation 1 PAMAM dendrimer
Authors
Angele P.
Babensee J. E.
+60 more
Badylak S.
Badylak S. F.
Badylak S. F.
Badylak S. F.
Billiar K.
Brody S.
Burugapalli K.
Buttafoco L.
Chandrasekar D.
Charulatha V.
Chen R. R.
Coburn J. C.
Curotto E.
Domanski D. M.
Duan X.
Duan X.
Duan X.
DuBay D. A.
Dumas P.
Ferrando J. M.
Garcia Y.
Grinnell F.
Henry J. A.
Hodde J.
Hodde J. P.
Ko R.
Kochupura P. V.
Koizumi N. J.
Lee J. M.
Lee S. H.
Liang H. C.
Ma L.
Ma Z.
Malafaya P. B.
McDevitt C. A.
McKegney M.
Meinert M.
Najlah M.
Nourse A.
Olde Damink L. H.
Olde Damink L. H.
Osborne C. S.
Papagiannaros A.
Pek Y. S.
Pieper J. S.
Saito H.
Sokolsky-Papkov M.
Tabata Y.
Tessmar J. K.
Unsworth J. M.
van Wachem P. B.
van Wachem P. B.
van Wachem P. B.
Voytik-Harbin S. L.
Wissink M. J.
Wissink M. J.
Wolkers W. F.
Yee N.
Zhong S.
Zilla P.
Publication date
1 February 2008
Publisher
'American Chemical Society (ACS)'
Doi
Cite
Abstract
This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in Biomacromolecules, copyright © American Chemical Society after peer review. To access the final edited and published work, see http://pubs.acs.org/doi/pdf/10.1021/bm701055k.A method to functionalize cholecyst-derived extracellular matrix (CEM) with free amine groups was established in an attempt to improve its potential for tethering of bioactive molecules. CEM was incorporated with Generation-1 polyamidoamine (G1 PAMAM) dendrimer by using N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide and N-hydroxysuccinimide cross-linking system. The nature of incorporation of PAMAM dendrimer was evaluated using shrink temperature measurements, Fourier transform infrared (FTIR) assessment, ninhydrin assay, and swellability. The effects of PAMAM incorporation on mechanical and degradation properties of CEM were evaluated using a uniaxial mechanical test and collagenase degradation assay, respectively. Ninhydrin assay and FTIR assessment confirmed the presence of increasing free amine groups with increasing quantity of PAMAM in dendrimer-incorporated CEM (DENCEM) scaffolds. The amount of dendrimer used was found to be critical in controlling scaffold degradation, shrink temperature, and free amine content. Cell culture studies showed that fibroblasts seeded on DENCEM maintained their metabolic activity and ability to proliferate in vitro. In addition, fluorescence cell staining and scanning electron microscopy analysis of cell-seeded DENCEM showed preservation of normal fibroblast morphology and phenotype
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Brunel University Research Archive
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