title: Low-dose aspirin promotes endothelial progenitor cell migration and adhesion and prevents senescence.
abstract: Circulating endothelial progenitor cells (EPCs) play a key role in restoring endothelial function and enhancing angiogenesis. However, the effects of low-dose aspirin on circulating EPCs are not well known. We investigated the effects of low-dose aspirin on EPC migration, adhesion, senescence, proliferation, apoptosis and endothelial nitric oxide synthase (eNOS) expression. EPC migration was detected by a modified Boyden chamber assay. EPC adhesion assay was performed by counting adherent cells on fibronectin-coated culture dishes. EPC senescence was assessed by both senescence-associated-beta-galactosidase staining and DAPI staining. EPC proliferation was analyzed by MTT assay. EPC apoptosis was evaluated by flow cytometric analysis. eNOS protein expression was measured by Western blotting analysis. Aspirin promoted EPC migratory and adhesive capacity at concentrations between 0.1 and 100micromol/L and prevented senescence at concentrations between 50 and 100micromol/L. Meanwhile, aspirin in a range of these concentrations did not affect EPC proliferation, apoptosis or eNOS expression. Our findings indicate that low-dose aspirin promotes migration and adhesion and delays the onset of senescence of EPCs.
authors.affiliation: Department of Cardiology, First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China.
authors.forename: Zhengli
authors.initials: Z
authors.lastname: Hu
authors.forename: Fumin
authors.initials: F
authors.lastname: Zhang
authors.forename: Zhijian
authors.initials: Z
authors.lastname: Yang
authors.forename: Jinying
authors.initials: J
authors.lastname: Zhang
authors.forename: Dingguo
authors.initials: D
authors.lastname: Zhang
authors.forename: Naiquan
authors.initials: N
authors.lastname: Yang
authors.forename: Yuqing
authors.initials: Y
authors.lastname: Zhang
authors.forename: Kejiang
authors.initials: K
authors.lastname: Cao
mesh_terms: D017209:Apoptosis / Q000187:drug effects; D001241:Aspirin / Q000494:pharmacology*; D002448:Cell Adhesion / Q000187:drug effects; D002465:Cell Movement / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D016922:Cellular Senescence / Q000187:drug effects; D016861:Cyclooxygenase Inhibitors / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D042783:Endothelial Cells / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D006801:Humans; D008297:Male; D052250:Nitric Oxide Synthase Type III / Q000378:metabolism; D013234:Stem Cells / Q000187:drug effects* / Q000378:metabolism
chemical_list: D016861:Cyclooxygenase Inhibitors; D052250:Nitric Oxide Synthase Type III; D001241:Aspirin