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Improvement in Therapeutic Ability of Wharton's Jelly Derived Mesenchymal Stem Cells with Vitamin E in Breast Cancer.

OBJECTIVE: To assess the role of Vitamin E to improve the survival of Wharton's jelly derived mesenchymal stem cells (WJMSCs) in breast cancer conditions.

STUDY DESIGN: An experimental study.

PLACE AND DURATION OF STUDY: Centre for Research in Molecular Medicine, University of Lahore, from November 2016 to March 2017.

METHODOLOGY: WJMSCs were obtained from umbilical cord tissue with enzyme digestion method. Isolated cells were characterized for CD90 and CD45 by immunocytochemistry. Pretreatment and conjugation therapies of vitamin E in 50mM and 100mM concentration were used on WJMSCs and breast cancer plasma was provided to mimic the cancer conditions, while WJMSCs provided with normal plasma were considered control. Cells' viability, proliferation and death were evaluated by crystal violet staining, MTT assay and LDH assay, respectively. Oxidative stress was observed by activity of anti-oxidant enzymes (GSH, catalase, SOD) and reactive oxygen species (MDA).

RESULTS: The isolated cells expressed mesenchymal stem cells marker CD90 and lacked hematopoietic marker CD45. Vitamin E improved the viability and proliferation of WJMSCs in normal plasma, in conjugation with breast cancer plasma and in pretreatment groups but conjugation group showed even better results with concentration of 100mM as compared to the pretreatment group and opposite was observed for LDH assay for cells death analysis. Vitamin E also reduced the oxidative stress in 100mM more pronounced in conjugation group as compared to pretreatment group while left no harmful effects on WJMSCs in normal plasma.

CONCLUSION: Vitamin E conjugation with breast cancer conditions significantly improved growth of WJMSCs. Thus vitamin E treated WJMSCs are better therapeutic options for breast cancer.

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