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In the present study, the cc‑006cpm8 novel colon cell line was established from a sample of right colorectal adenocarcinoma obtained from a woman with liver metastasis. It was possible to culture this cell line for ≥100 passages in vitro with vigorous growth. Morphologically, the cells grew as several layers with tight adhesion to the surface of the culture plate. The morphological, immunological and ultrastructural features of these cells suggested their epithelial origin. The characterization of this cell line indicated a doubling time of 27 h, a colony forming efficiency of 73.2% in semisolid media and a plate efficiency of 66.5% in liquid culture. The modal number of chromosomes was 50. In vivo, the cc‑006cpm8 cells underwent tumorigenesis in all nude mice used. Immunohistochemical analysis demonstrated that mutS homolog 2 (MSH2) and MSH6 were expressed; however, mutL homolog 1 and postmeiotic segregation 2 were downregulated in cc‑006cpm8 cells. To determine the mutation profile of the cell line analyzed, exome capture DNA sequencing was performed. The results revealed 20 hypermutated exons comprising single nucleotide polymorphisms, and insertion and deletions (InDels), including single nucleotide variants of mucin (MUC)19, MUC16, MUC12, filaggrin and AHNAK nucleoprotein 2, and InDels of β defensin‑126, microRNA‑3665, WNK lysine deficient protein kinase 1 and SLAIN motif‑containing protein 1. In addition, commonly mutated genes in colorectal cancer and exon mutations of genes in cc‑006cpm8 cells were analyzed, including adenomatous polyposis coli, tumor protein p53, Drosophila mothers against decapentaplegic 4, phosphatidylinositol‑4,5‑bisphosphate 3‑kinase catalytic subunit α and Kirsten rat sarcoma, and genes associated with the DNA mismatch repair pathway were investigated.

international journal of oncology

Establishment and characterization of a novel cell line (cc‑006cpm8) of moderately/poorly differentiated colorectal adenocarcinoma derived from a primary tumor of a patient