Reference: Suzuki T and Iwahashi Y (2011) Gene expression profiles of yeast Saccharomyces cerevisiae sod1 caused by patulin toxicity and evaluation of recovery potential of ascorbic acid. J Agric Food Chem 59(13):7145-54

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Abstract


Patulin (PAT) is a fungal secondary metabolite and exhibits various toxicities including DNA damage and oxidative stress. These toxicities are eased by ascorbic acid (AsA). Although a number of studies regarding the mitigating effect of AsA against PAT toxicity have been reported, a comprehensive study about gene expressions is currently underway. Here, we carried out a detailed evaluation of PAT toxicity by co-incubation with AsA using the superoxide dismutase (SOD) mutant. DNA microarray results extracted the alterations in iron transporter and Fe/S cluster assembly genes; some of the genes that constitute the cellular iron transporter systems remained dysfunctional even in the presence of AsA. Meanwhile, AsA treatment reduced the alterations of G1/S phase cell cycle regulation genes. These results suggest that oxidative stress-derived DNA damage still exists, although AsA treatment effectively reduces PAT toxicity. This implies that a combined condition is required for complete blockade of PAT toxicity.

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Journal Article
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Suzuki T, Iwahashi Y
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