Anti-PRAME Picoband® Antibody

Melanoma antigen preferentially expressed in tumors is a protein that in humans is encoded by the PRAME gene. It is mapped to 22q11.22. This gene encodes an antigen that is preferentially expressed in human melanomas and that is recognized by cytolytic T lymphocytes. It is not expressed in normal tissues, except testis. The encoded protein acts as a repressor of retinoic acid receptor, and likely confers a growth advantage to cancer cells via this function. Alternative splicing results in multiple transcript variants.

Detected in brain, gastric carcinoma, lung, ovary, skeletal muscle, umbilical cord blood and a cell line derived from kidney proximal tubule epithelium.

Cofactors, Vitamins/Minerals, Metabolism, Mitochondrial, Mitochondrial Markers, Mitochondrial Metabolism, Pathways and Processes, Signal Transduction, Vitamins/Minerals

Functions as a transcriptional repressor, inhibiting the signaling of retinoic acid through the retinoic acid receptors RARA, RARB and RARG. Prevents retinoic acid-induced cell proliferation arrest, differentiation and apoptosis.

1. Epping, M. T., Wang, L., Edel, M. J., Carlee, L., Hernandez, M., Bernards, R. The human tumor antigen PRAME is a dominant repressor of retinoic acid receptor signaling. Cell 122: 835-847, 2005. 2. Ikeda, H., Lethe, B., Lehmann, F., van Baren, N., Baurain, J.-F., de Smet, C., Chambost, H., Vitale, M., Moretta, A., Boon, T., Coulie, P. G. Characterization of an antigen that is recognized on a melanoma showing partial HLA loss by CTL expressing an NK inhibitory receptor. Immunity 6: 199-208, 1997. 3. van Baren, N., Chambost, H., Ferrant, A., Michaux, L., Ikeda, H., Millard, I., Olive, D., Boon, T., Coulie, P. G. PRAME, a gene encoding an antigen recognized on a human melanoma by cytolytic T cells, is expressed in acute leukaemia cells. Brit. J. Haemat. 102: 1376-1379, 1998.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.