Vitamin E inhibits apoptosis of human CD34+-derived erythroid progenitor cells obtained from healthy adults
Document Type
Article
Department
Biological and Biomedical Sciences; Pathology and Laboratory Medicine; Community Health Sciences
Abstract
Inhibition of proapoptotic proteins by various intra- and extracellular factors have been shown to cause increased survival of EPCs. The aim of the present study was to investigate the effect of vitamin E on Tumor Necrosis Factor-Alpha (TNF-a)-induced apoptosis of CD34+- derived EPCs of healthy human adults. CD34+- derived EPCs were isolated from human Peripheral Blood Mononuclear Cells (PBMNCs) and treated in vitro with various concentrations of TNF-a to determine the dose inducing maximum apoptosis. EPCs were incubated at various concentrations of vitamin E or Erythropoietin (EPO) as control for 4 hours before adding 100 ng/mL of TNF-a (a dose producing maximum apoptosis). After 24-hour incubation, quantification of percentage of EPCs undergoing apoptosis was carried out by FITC-Annexin V and PI staining followed by flow cytometry. In a dose-dependent manner, TNF-a alone increased the percentage of early and late apoptosis of treated CD34+- derived EPCs. There was a significant difference in the mean percentage of TNF-a-induced apoptotic CD34+-derived EPCs in early and late apoptosis by vitamin E treatment (p value= 0.080) which was higher in early as compared to late apoptosis. There was a significant difference in the percentages of TNF-a induced early and late apoptosis of CD34+- derived EPCs by vitamin E treatment or EPO treatment when analyzed for a statistical interactive effect on early and late apoptosis and drug concentration (p value < 0.001).The study suggests a positive role of vitamin E in decreasing TNF-a induced apoptosis of CD34+- derived EPCs from healthy human adults.
Publication (Name of Journal)
Annals of Hematology and Oncology
Recommended Citation
Jilani, T.,
Khan, I.,
Salim, A.,
Bilwani, F.,
Moiz, B.,
Syed, I. A.,
Iqbal, M.
(2019). Vitamin E inhibits apoptosis of human CD34+-derived erythroid progenitor cells obtained from healthy adults. Annals of Hematology and Oncology, 6(7), 1260.
Available at:
https://ecommons.aku.edu/pakistan_fhs_mc_bbs/811
Comments
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