Journal
STEM CELLS AND DEVELOPMENT
Volume 25, Issue 19, Pages 1444-1453Publisher
MARY ANN LIEBERT, INC
DOI: 10.1089/scd.2016.0025
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Funding
- NWO [40-00506-98-9021]
- Cochilco-Fondecyt [1100995, IMII P09-016-F]
- FP7 program: EULAMDIMA [PIRSES-GA-2011-295185]
- Dutch Diabetes Foundation [2012.00.1537]
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Diabetic retinopathy (DR) is a hyperglycemia (HG)-mediated microvascular complication. In DR, the loss of pericytes and subsequently endothelial cells leads to pathologic angiogenesis in retina. Adipose-derived stromal cells (ASC) are a promising source of therapeutic cells to replace lost pericytes in DR. To date, knowledge of the influence of HG on the bioenergetics and pericytic function of ASC is negligible. Human ASC were cultured in normoglycemia medium (5mM d-glucose) or under HG (30mM D-glucose) and assessed. Our data showed that HG increased the level of apoptosis and reactive oxygen species production in ASC, yet their proliferation rate was not affected. HG induced alterations in mitochondrial function and morphology in ASC. HG also strongly affected the bioenergetic status of ASC in which both the maximum oxygen consumption rate and extracellular acidification rate were decreased. This was corroborated by a reduced uptake of glucose under HG. In spite of these observations, in vitro, ASC promoted the formation of vascular-like networks of human umbilical vein endothelial cells on monolayers of ASC under HG with minimally affected.
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