WM858 Viable Cells

Cells are sterile, validated by short tandem repeat profiling, and are tested as negative for mycoplasma. It is recommended that cell lines are tested for mycoplasma contamination and short tandem repeat (STR) profiling every 10 passages or each time a frozen seed stock is made. See cell culture protocol for additional details. WM858 is a metastatic human melanoma cell line established from a metastatic site (right axillary nodes) in a 48-year-old female with level III malignant, superficial spreading melanoma. The subject displayed polypoid VGP with a tumor thickness of 3.24mm. This cell line features the specific V600E (Val600Glu) mutation at codon 600 in the BRAF gene. This mutation causes constitutively active kinase activity and activation of MEK and ERK signaling pathway. This cell line expresses wild type PTEN, N-RAS, c-KIT, and CDK4 genes. WM858 cells match with WM873-1 and WM873-2. These cells produce xenograft tumors when injected into immunocompromised mice.