Title:Adipose Mesenchymal Stem Cell-derived Exosomes Enhanced Glycolysis
through the SIX1/HBO1 Pathway against Oxygen and Glucose
Deprivation Injury in Human Umbilical Vein Endothelial Cells
Volume: 19
Issue: 8
Author(s): Xiangyu Zhang, Xin Zhang, Lu Chen, Jiaqi Zhao, Ashok Raj, Yanping Wang, Shulin Li, Chi Zhang, Jing Yang*Dong Sun*
Affiliation:
- Department of Nephrology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
- Department of Nephrology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
- Department of Internal Medicine and Diagnostics, Xuzhou Medical University, Xuzhou, China
Keywords:
Adipose mesenchymal stem cell, exosome, glycolysis, endothelial cells, oxygen, glucose.
Abstract:
Background: Angiogenesis and energy metabolism mediated by adipose mesenchymal
stem cell-derived exosomes (AMSC-exos) are promising therapeutics for vascular diseases.
Objectives: The current study aimed to explore whether AMSC-exos have therapeutic effects on
oxygen and glucose deprivation (OGD) human umbilical vein endothelial cells (HUVECs) injury
by modulating the SIX1/HBO1 signaling pathway to upregulate endothelial cells (E.C.s) glycolysis
and angiogenesis.
Methods: AMSC-exos were isolated and characterized following standard protocols. AMSC-exos
cytoprotective effects were evaluated in the HUVECs-OGD model. The proliferation, migration,
and tube formation abilities of HUVECs were assessed. The glycolysis level was evaluated by detecting
lactate production and ATP synthesis. The expressions of HK2, PKM2, VEGF, HIF-1α,
SIX1, and HBO1 were determined by western blotting, and finally, the SIX1 overexpression vector
or small interfering RNA (siRNA) was transfected into HUVECs to assess the change in
HBO1 expression.
Results: Our study revealed that AMSC-exos promotes E.C.s survival after OGD, reducing E.C.s
apoptosis while strengthening E.C.'s angiogenic ability. AMSC-exos enhanced glycolysis and reduced
OGD-induced ECs injury by modulation of the SIX1/HBO1 signaling pathway, which is a
novel anti-endothelial cell injury role of AMSC-exos that regulates glycolysis via activating the
SIX1/HBO1 signaling pathway.
Conclusion: The current study findings demonstrate a useful angiogenic therapeutic strategy for
AMSC-exos treatment in vascular injury, thus providing new therapeutic ideas for treating
ischaemic diseases.