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Supplemental Material, sj-pdf-1-jba-10.1177_08853282211046800 for Pressure-compacted and spider silk–reinforced fibrin demonstrates sufficient biomechanical stability as cardiac patch in vitro by Dmitry Bobylev, Mathias Wilhelmi, Skadi Lau, Melanie Klingenberg, Markus Mlinaric, Elena Petená, Florian Helms, Thomas Hassel, Axel Haverich, Alexander Horke and Ulrike Böer in Journal of Biomaterials Applications

Supplemental Material, sj-pdf-1-jba-10.1177_08853282211046800 for Pressure-compacted and spider silk–reinforced fibrin demonstrates sufficient biomechanical stability as cardiac patch in vitro by Dmitry Bobylev, Mathias Wilhelmi, Skadi Lau, Melanie Klingenberg, Markus Mlinaric, Elena Petená, Florian Helms, Thomas Hassel, Axel Haverich, Alexander Horke and Ulrike Böer in Journal of Biomaterials Applications

Inadequate vascularization leading to insufficient oxygen and nutrient supply in deeper layers of bioartificial tissues remains a limitation in current tissue engineering approaches to which prevascularization offers a promising solution. Hypoxia triggering pre-vascularization by enhanced vascular endothelial growth factor (VEGF) expression can be induced chemically by dimethyloxalylglycine (DMOG). Nanoporous silica nanoparticles (NPSNPs, or mesoporous silica nanoparticles, MSNs) enable sustained delivery of molecules and potentially release DMOG allowing a durable capillarization of a construct. Here we evaluated the effects of soluble DMOG and DMOG-loaded NPSNPs on VEGF secretion of adipose tissue-derived stem cells (ASC) and on tube formation by human umbilical vein endothelial cells (HUVEC)-ASC co-cultures. Repeated doses of 100 mM and 500 mM soluble DMOG on ASC resulted in 3- to 7-fold increased VEGF levels on day 9 (P