Abstract:
:Improvement in angiogenesis using mesenchymal stem cells (MSCs) is evolving as an option in patients with vascular insufficiencies. The paracrine factors secreted by MSCs have been attributed to the angiogenic response. This study was conducted to identify the factors secreted by umbilical cord-derived MSCs (UCMSCs) that might play a role in angiogenesis. To this aim, we evaluated the presence of well known proangiogenic factors in the conditioned media (CM) derived from UCMSCs by ELISA. While vascular endothelial growth factor (VEGF), a well known angiogenic factor, was not detected in the CM, gene expression was nevertheless detected in these cells. Further investigations revealed the presence of soluble VEGF receptors (sVEGF-R1 and R2) that were capable of neutralizing exogenous VEGF. Human umbilical cord vein-derived endothelial cells exposed in vitro to CM, in comparison to control media, showed improved migration (P<0.007) and capillary-like network formation (P<0.001) with no significant change in endothelial cell proliferation. The angiogenic response observed with the paracrine factors secreted by UCMSC could be due to the presence of significant levels of a metalloprotease and matrix metalloproteases-2 (237.4±47.1 ng/10(6) cells). Data suggest that a VEGF-independent pathway is involved in the angiogenic response observed with endothelial cells in the presence of UCMSC-CM.
journal_name
Stem Cells Devjournal_title
Stem cells and developmentauthors
Kuchroo P,Dave V,Vijayan A,Viswanathan C,Ghosh Ddoi
10.1089/scd.2014.0184subject
Has Abstractpub_date
2015-02-15 00:00:00pages
437-50issue
4eissn
1547-3287issn
1557-8534journal_volume
24pub_type
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