> Details

Zippusch, Sarah [Author]; Besecke, Karen F. W. [Author]; Helms, Florian [Author]; Klingenberg, Melanie [Author]; Lyons, Anne [Author]; Behrens, Peter [Author]; Haverich, Axel [Author]; Wilhelmi, Mathias [Author]; Ehlert, Nina [Author]; Böer, Ulrike [Author]

Chemically induced hypoxia by dimethyloxalylglycine (dmog)-loaded nanoporous silica nanoparticles supports endothelial tube formation by sustained vegf release from adipose tissue-derived stem cells - [published Version]

Reference
management

Bookmarks

Remove from
bookmarks

Share this on Whatsapp

Close

Bookmarks



You can manage bookmarks using lists, please log in to your user account for this.
  • Media type: Text; E-Article
  • Title: Chemically induced hypoxia by dimethyloxalylglycine (dmog)-loaded nanoporous silica nanoparticles supports endothelial tube formation by sustained vegf release from adipose tissue-derived stem cells
  • Contributor: Zippusch, Sarah [Author]; Besecke, Karen F. W. [Author]; Helms, Florian [Author]; Klingenberg, Melanie [Author]; Lyons, Anne [Author]; Behrens, Peter [Author]; Haverich, Axel [Author]; Wilhelmi, Mathias [Author]; Ehlert, Nina [Author]; Böer, Ulrike [Author]
  • Published: Oxford : Oxford Univ. Press, 2021
  • Published in: Regenerative Biomaterials 8 (2021), Nr. 5 ; Regenerative Biomaterials
  • Issue: published Version
  • Language: English
  • DOI: https://doi.org/10.15488/14285; https://doi.org/10.1093/rb/rbab039
  • ISSN: 2056-3418
  • Keywords: Dimethyloxalylglycine ; Pre-vascularization ; Nanoporous silica nanoparticles ; Adipose tissue-derived stem cells ; Tissue engineering
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: 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<0.0001). Same doses of DMOG-NPSNPs enhanced VEGF secretion 7.7-fold (P<0.0001) which could be maintained until day 12 with 500 mM DMOG-NPSNPs. In fibrin-based tube formation assays, 100 mM DMOG-NPSNPs had inhibitory effects whereas 50 mM significantly increased tube length, area and number of junctions transiently for 4 days. Thus, DMOG-NPSNPs supported endothelial tube formation by upregulated VEGF secretion from ASC and thus display a promising tool for prevascularization of tissue-engineered constructs. Further studies will evaluate their effect in hydrogels under perfusion.
  • Access State: Open Access