In 1987, J. Park and colleagues established the SNU-5 cell line from the ascites of a patient with poorly differentiated gastric cancer. The patient had previously received chemotherapy including 5-fluorouracil, doxorubicin, and mitomycin.
The cells express the surface glycoproteins carcinoembryonic antigen (CEA) and TAG-72.
The cells are positive for L-dopa decarboxylase (DDC).
SNU-5 cells are positive for VIP receptors but lack gastrin receptors. They express muscarinic cholinergic factor receptors. There is no evidence of amplification or rearrangement of the N-myc, L-myc, myb, or EGF receptor genes. The expression levels of c-myc and c-erb-B-2 RNA in these cells are comparable to those in other cell lines. The following genes are not expressed: N-myc, L-myc, c-cis, IGF-2, or gastrin-releasing peptide.