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Abstract Title:

L-Ascorbic Acid andα-Tocopherol Synergistically Triggers Apoptosis Inducing Antileukemic Effects of Arsenic TrioxideOxidative Stress in Human Acute Promyelocytic Leukemia Cells.

Abstract Source:

Front Oncol. 2020 ;10:65. Epub 2020 Feb 21. PMID: 32154163

Abstract Author(s):

Radhakrishnan Chandraprabha Vineetha, Sreedharan Hariharan, Abdul Jaleel, Mahesh Chandran, Raveendran Harikumaran Nair

Article Affiliation:

Radhakrishnan Chandraprabha Vineetha

Abstract:

Chemosensitization is an effective strategy to overcome the drawbacks of arsenic trioxide (AsO) treatment, which may be possible through the use of dietary supplements in combination. The present investigation evaluates the synergistic mechanism of action of vitamins, such as L-ascorbic acid (L-AA) andα-tocopherol (α-TOC) in AsOchemotherapy using human leukemia (HL-60) cells.assays on the cytotoxicity of AsOand vitamins and cellular apoptotic evidences were done; a proteomic investigation with mass spectrometry was also performed. The combination of L-AA andα-TOC potentiates AsOcytotoxicity in HL-60 cells, substantiated by depletion in antioxidant status, mitochondrial transmembrane potential, and inhibition of nuclear factor erythroid 2-related factor 2 and B-cell lymphoma 2 transcription factors. Mass spectrometry results showed decreased expression of proteins regulating cell cycle and translation in cells treated with AsO, L-AA, andα-TOC when compared with AsO-treated sample. In addition, this combination treatment identified numerous proteins associated with apoptosis and cell stress. HL-60 cells became more prone to AsOon exposure to L-AA andα-TOC, indicating that this combination may be a promising approach to increase the outcome of AsOchemotherapy.

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