Jan 5, 2011

NAD+ treatment decreases tumor cell survival by inducing oxidative stress

Frontiers in Bioscience (Elite Edition)
Cuiping ZhaoWeihai Ying

Abstract

NAD+ plays important roles in various biological processes. It has been shown that NAD+ treatment can decrease genotoxic agent-induced death of primary neuronal and astrocyte cultures, and NAD+ administration can reduce ischemic brain damage. However, the effects of NAD+ treatment on tumor cell survival are unknown. In this study we found that treatment of NAD+ at concentrations from 10 micromolar to 1 mM can significantly decrease the survival of various types of tumor cells such as C6 glioma cells. In contrast, NAD+ treatment did not impair the survival of primary astrocyte cultures. Our study has also indicated that oxidative stress mediates the effects of NAD+ on the survival of tumor cells, and P2X7 receptors and altered calcium homeostasis are involved in the effects of NAD+ on the cell survival. Collectively, our study has provided the first evidence that NAD+ treatment can decrease the survival of tumor cells by such mechanisms as inducing oxidative stress. Because NAD+ treatment can selectively decrease the survival of tumor cells, NAD+ may become a novel agent for treating cancer.

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Mentioned in this Paper

Tumor Cells, Uncertain Whether Benign or Malignant
Flow Cytometry
Novidium
Calcium
Neutrophil Actin Dysfunction
Astrocytes
Immunofluorescence Microscopy
Oxidative Stress
Oxidative Stress Analysis
NADH

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