The effect of peptides from chicken feather meal to inhibit cancer cell types that are available at the laboratory at the Research Institute of Biotechnology and Genetic Engineering. Chulalongkorn University, such as breast cancer cells (BT 474), lung cancer (Chago), liver cancer cells (Hep-G2), cell cancer (SW 620) and cancer, gastric (KATO-3) were studied by immunohistochemistry. MTT, starting from the study prepared by diluting the cancer cells begin to 1 × 106 cells per milliliter. Vacuum cell suspension tray with cells, 96-volume wells per 100 microliters then incubated in the incubator carbon dioxide at a temperature of 37 degrees Celsius, carbon dioxide, 5 percent for 24 hours, adding a solution of peptide from chicken feather meal preparation. into the tray with cells, 96-volume wells per 100 microliters cancer cells incubated in the incubator carbon dioxide at a temperature of 37 degrees Celsius, carbon dioxide, 5 percent for 24 hours, then adding a solution of MTT at a concentration of 0.5 milligrams per milliliter. In solution, DMSO volume of each hole 10 microliter then incubated in the incubator carbon dioxide at a temperature of 37 degrees Celsius, carbon dioxide, 5 percent for four hours, then adding a solution of DMSO concentration is 100 percent volume wells per 100 microliters to melt the crystalline formazan left. hold for five minutes and taking measurements. By measuring the absorption of light at a wavelength of 595 nm by comparing the absorbance of the control group with the survival of the cell is 100 percent, which can bring the absorbance is measured to calculate the formula.
percent survival of cancer cells = (sample OD / control OD) × 100
Note sample OD is the absorbance of the sample
control OD is the absorbance of the control group.
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