Harvest the MCF-7 cells by centrifugalization at 560-G for three minutes, at four degrees Celsius. Add 500 microliters of buffered RL-1 to five times 10 to the six cells and mix thoroughly until no cell masses are visible. Next, transfer the cell homogenates to a DNA cleaning column embedded in the collection tube.
Centrifuge the samples at 85-50-G for two minutes, at four degrees Celsius. After centrifuging, remove the DNA cleaning column, retaining the supernatant in the collection tube. Add 800 microliters of buffer RL-2 and 500 microliters of the supernatant, and mix gently.
Next, transfer 700 microliters of the mixture into an RNA-only column embedded in the collection tube. Centrifuge the tube at 8, 550-G for one minute, at four degrees Celsius. Then discard the flow-through in the collection tube.
Wash the RNA-only column first with 500 milliliters of buffer RW-1, and then with 700 milliliters of buffer RW-2, by centrifuging for one minute at 8, 550-G, and four degrees Celsius at each wash. After removing the residual RW-2 by centrifuging again, transfer the RNA only column to a new collection tube. Add 100 microliters of RNAs-free deionized water, preheated at 65 degrees Celsius to the center of the membrane in the RNA-only column, and wait for two minutes.
Then centrifuge at 8, 550-G for one minute, at four degrees Celsius to collect the RNA solution. Set up the reaction mixture for PCR and then set the PCR reaction conditions of the system. Execute the QRT PCR procedure.
QRT PCR showed that cylindricity treatment promoted the gene expression of the pro-apoptotic factors, CC-9, CC-7, CC-3, vim, and vax, while it inhibited the gene expression of anti-apoptotic BCL-2. Further, cylindricide administration reduced the gene expression levels of PI-3K, AKT, M-tor, HIF1-Alpha and Fox-01.
