Delphinidin, Luteolin and Halogenated Boroxine Modulate CAT Gene Expression in Cultured Lymphocytes

Öz

Luteolin and delphinidin are the flavonoids with known protective roles. They inhibit genotoxic effects induced by halogenated boroxine (HB) in vitro. Statistically significant decrease in the frequency of micronuclei and nuclear buds and suppression of the occurrence of aberrant cells were observed before, but mechanism of its anti-genotoxic activity is still not clear. In our experiment we aimed to quantify HB effects on the relative expression of CAT (catalase) gene and explore antioxidative effects of luteolin and delphinidin via restoration of CAT gene activity. Cell cultures from peripheral blood lymphocytes of five healthy donors were established and treated with independent and concomitant treatments of HB with luteolin or delphinidin. Total RNA was isolated from harvested cells and reverse-transcribed. SYBR based Real-Time PCR amplification method was used. Analysis of results included normalization of ratio of target (CAT) and housekeeping (GAPDH) gene and statistical analysis (REST®). Luteolin itself lead to downregulation of relative CAT gene expression as well as HB. But simultaneous treatment of HB and bioflavonoids lead to upregulation. Delphinidin as independent treatment and as simultaneous treatment caused upregulation of relative CAT gene expression. Obtained results may indicate protective role of delphinidin and luteolin to oxidative damage caused by HB, and also that new approaches to the treatment applications of HB should include bioflavonoids and monitoring corresponding antioxidant system. Our findings indicate that there is a quantifiable effect of luteolin and delphinidine on antioxidant genes which could be used in exact monitoring of oxidative stress related events.

Anahtar Kelimeler

• bioflavonoids
• dipotassium-trioxohydroxytetrafluorotriborate
• catalase
• antioxidants

Kaynakça

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