Comparison of the transcriptome data of metastasis-competent CTC-MCC-41 cells and of HT-29 cells (derived from a primary colon cancer) highlights the differential expression of genes that regulate energy metabolism [peroxisome proliferator-activated receptor γ coactivator 1A (<i>PPARGC1A</i>), peroxisome proliferator-activated receptor γ coactivator 1B (<i>PPARGC1B</i>), fatty acid binding protein 1 (<i>FABP1</i>), aldehyde dehydrogenase 3 family member A1 (<i>ALDH3A1</i>)], DNA repair [BRCA1 interacting protein C-terminal helicase 1 (<i>BRIP1</i>), Fanconi anemia complementation group B (<i>FANCB</i>), Fanconi anemia complementation group M (<i>FANCM</i>)], and stemness [glutaminase 2 (<i>GLS2</i>), cystathionine-beta-synthase (<i>CBS</i>), and cystathionine gamma-lyase (<i>CTH</i>)].
The purpose of the current study was to investigate the effect of the allosteric CBS activator S-adenosyl-L-methionine (SAM) on the proliferation and bioenergetics of the CBS-expressing colon cancer cell line HCT116.
The CBS and FET colon cancer cell lines, which secrete amounts of urokinase similar to HCT 116 cells and display one tenth of the receptor number were found to be poorly invasive.