alexa Tocopherol succinate: modulation of antioxidant enzymes and oncogene expression, and hematopoietic recovery.
Bioinformatics & Systems Biology

Bioinformatics & Systems Biology

Journal of Proteomics & Bioinformatics

Author(s): Singh VK, Parekh VI, Brown DS, Kao TC, Mog SR

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Abstract PURPOSE: A class of naturally occurring isoforms of tocopherol (tocols) was shown to have varying degrees of protection when administered before radiation exposure. We recently demonstrated that α-tocopherol succinate (TS) is a potential radiation prophylactic agent. Our objective in this study was to further investigate the mechanism of action of TS in mice exposed to (60)Co γ-radiation. METHODS AND MATERIALS: We evaluated the effects of TS on expression of antioxidant enzymes and oncogenes by quantitative RT-PCR in bone marrow cells of (60)Co γ-irradiated mice. Further, we tested the ability of TS to rescue and repopulate hematopoietic stem cells by analyzing bone marrow cellularity and spleen colony forming unit in spleen of TS-injected and irradiated mice. RESULTS: Our results demonstrate that TS modulated the expression of antioxidant enzymes and inhibited expression of oncogenes in irradiated mice at different time points. TS also increased colony forming unit-spleen numbers and bone marrow cellularity in irradiated mice. CONCLUSIONS: Results provide additional support for the observed radioprotective efficacy of TS and insight into mechanisms. Published by Elsevier Inc. This article was published in Int J Radiat Oncol Biol Phys and referenced in Journal of Proteomics & Bioinformatics

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