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Biology subjects

Azman, Z. N.

Publications and source records attributed to Azman, Z. N..

2 recordsLinked to original sources

Evaluating Antioxidant Capacity of Different Propolis Samples from Konya, Turkey and Their Inhibitory Effect on Head and Neck Cancer Cells

Propolis is a resinous mixture collected and used by the honey bees to construct and repair their hives. The component of propolis varies depend on the type of the plants collected. Propolis and its constituents have been subjected to many studies and are known for their antioxidant, antimicrobial and anticarcinogenic properties. In our study, antioxidant and antitumor capacity of propolis from Konya Sakyatan and Kiziloren regions were investigated. According to our result, Kzloren propolis sample possesses higher antioxidant component and antioxidant capacity than Sakyatan sample. Accordingly, Kiziloren sample showed antiproliferative effect at much lower doses compared to the Sakyatan sample. Both samples effectively inhibited the migration of cancer cells at their determined IC50 dosages. Obtained data indicates that constituents of propolis can greatly vary from one sample to another even in the same region and propolis selections for cancer prevention and treatment studies should be carefully considered.

pharmacology and toxicology

Caffeic Acid Phenethyl Ester (CAPE) Inhibits Growth of Chromosomally instable bub1Δ mutant in Saccharomyces cerevisiae

Chromosomal instability (CIN) is a hallmark of cancer cells. Spindle Assembly Checkpoint (SAC) proteins such as Bub1 monitor errors in chromosome segregation and cause cell cycle delay to prevent CIN. Altered expression of BUBl is observed in several tumor samples and cancer cell lines which display CIN. Caffeic Acid Phenethyl Ester (CAPE) which is an active component of propolis obtained from bee hives has anti-inflammatory antioxidant and anticarcinogenic properties. We used budding yeast S. cerevisiae as a model organism to investigate the molecular mechanism by which CAPE can inhibit the growth of cells with high levels of CIN. Here we show that CAPE leads to growth inhibition of bub1{Delta} strains. CAPE treatment suppressed chromosome mis-segregation in bub1{Delta} strain possibly due to apoptosis of chromosomally instable bub1{Delta} cells. We propose that CAPE may serve as a potential therapeutic agent for treatment of BUB1 deficient cancers and other cancers that exhibit CIN.

genetics