To evaluate the antiproliferative activity of a novel BET Bromodomain inhibitor as single agent and in combination with the BTK inhibitor ibrutinib in non-Hodgkin lymphoma cell lines, we performed the MTT proliferation assay. This assay is based on the direct correlation between absorbance (measured colorimetrically at a wavelength of 570 nm) and cell proliferation. Thiazolyl Blue Tetrazolium Blue (MTT) is a yellowish solution that distinguishes between proliferating and dead cells since it is converted to water-insoluble MTT-formazan of dark blue color by mitochondrial dehydrogenases of living cells only.
Keywords: BET inhibitor; BRD inhibitor; Ibrutinib; Lymphoma; MTT.