1,25(OH)2D3 increase caspase-3 activity in LNCaP cells after 2 minutes and 48h separately

• Main Author: Kjellerås, Jennifer
• Format: Others
• Language: English
• Published: Högskolan i Skövde, Institutionen för vård och natur 2007
• Subjects: prostate cancer; vitamin D; 1.25(OH)2D3; 24.25(OH)2D3; growth inhibition; apoptosis; antiproliferation; Microbiology in the medical area; Mikrobiologi inom det medicinska området
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-474

Cancer or malignant tumors has a high death frequency in many countries. Nowadays many research facilities are dedicated to find new substances and techniques which would lead to better cancer therapies. Seven years ago a research team from Finland made a remarkable connection between vitamin D deficiencies and an increased chance of getting prostate cancer. The research investigating this statement has lead to findings of a new non-classical effect of the calcium controlling vitamin, 1,25(OH)2D3. This effect involves anti-proliferatory effects and more importantly apoptotic effects resulting in the hope of finding a new drug that can cure prostate cancer with the smallest amount of harm to the body. In an attempt to find out if the signalling pathway of this apoptotic effect is fast or slow, an experiment designed to detect when the apoptotic protein caspase-3 is induced has been performed. Cells from the cell line LNCaP has been cultured and incubated with 1,25(OH)2D3 and after 0min - 48h an assay was performed to detect the relative amounts of caspase-3 present in every sample. The optimal time period (48h) was then subjected to three different concentrations of 1,25(OH)2D3 and read in the same way as the previous samples. The results showed an increase in caspase-3 expression as early as 2 min, but disappear to be seen again at 24h and are more profound in 48h samples. The caspase-3 expression was also seen to form a possible exponential curve in dose-response.