Abstract
Ovine forestomach matrix (OFM) biomaterial acts as a biomimetic of native extracellular matrix (ECM) by providing structural and functional cues to orchestrate cell activity during tissue regeneration. The ordered collagen matrix of the biomaterial is supplemented with secondary ECM-associated macromolecules that function in cell adhesion, migration and communication. As angiogenesis and vasculogenesis are critical processes during tissue regeneration we sought to quantify the angiogenic properties of the OFM biomaterial. In vitro studies demonstrated that soluble OFM components stimulated human umbilical vein endothelial cell (HUVEC) migration and increased vascular sprouting from an aorta. Blood vessel density and branch points increased in response to OFM in an ex ovo chicken chorioallantoic membrane (CAM) assay. The OFM biomaterial was shown to undergo remodeling in a porcine full-thickness excisional model and gave rise to significantly more blood vessels than wounds treated with small intestinal submucosa decellularized ECM or untreated wounds.
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