TK6 Cells

TK6 is a lymphoblast cell line derived from the spleen of a 5-year-old male diagnosed with hereditary spherocytosis. This cell line is particularly notable for being heterozygous at the thymidine kinase (TK) locus, which underpins its utility in genetic research. The heterozygosity at the TK locus allows the TK6 cells to serve as a sensitive model for detecting forward mutations, providing a robust platform for mutagenicity testing and genetic toxicology studies. The cells are employed extensively in assays designed to quantitatively detect forward mutations at three loci, including resistance to trifluorothymidine at the tk locus. This capability makes TK6 an invaluable tool in the pharmaceutical and chemical industries for evaluating the mutagenic potential of new compounds. The cell line’s unique genetic background and its relevance to disease make it a critical resource for studies focused on understanding mutation processes and evaluating the cytogenetic effects of chemical exposures in a controlled environment.