alexa WiDr is a derivative of another colon adenocarcinoma cell line, HT-29.
Oncology

Oncology

Journal of Cancer Science & Therapy

Author(s): Chen TR, Drabkowski D, Hay RJ, Macy M, Peterson W Jr

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Abstract This paper documents chromosomal and isozymic evidence indicating that WiDr is a derivative of another colon adenocarcinoma cell line, HT-29, which was established in 1964. The phenotypes for seven isozymes studied were identical for all HT-29 and WiDr cell lines. The karyotypes were similar between four HT-29 cultures separated by more than 100 passages and two WiDr cultures that were studied independently in 1979 and 1985. The isozymic and karyotypic data are consistent with that described for the cell line WiDr, originally reported in 1979. Detailed karyotypic comparisons further show that cultures of WiDr possess all nine chromosomal markers found in the initial HT-29 (passage 19) cultures. However, both the higher passaged HT-29 and WiDr differ from the initial HT-29 (passage 19) because it has an additional five to eight constitutive marker chromosomes. An increase or decrease of one copy in several normal chromosomes is also noticed with more normal chromosome gains than losses. The study provides another example demonstrating the remarkable karyotypic stability within a heteroploid cell line with continued passage. It also reemphasizes the critical need for detailed karyotypic and isoenzymic studies on all cell lines in common use.
This article was published in Cancer Genet Cytogenet and referenced in Journal of Cancer Science & Therapy

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