Differences in the incorporation of bromodeoxyuridine by human lymphoblastoid cell lines.
Long term human lymphoblastoid lines differ in their ability to grow in medium containing bromodeoxyuridine (BrdU) and to incorporate analog into their DNA. Eight Burkitt's lymphoma cell lines divided at least twice in BrdU-containing medium and made DNA in which over 90% of the thymidine residues were substituted with analog in both strands. Three infectious mononucleosis-derived lines and 24 lines transformed in vitro were inhibited by BrdU after one cell division and made only hybrid DNA in which one strand was substituted with analog. One out of eight normal individuals from whom long term lines were prepared gave cell lines which divided at least twice in BrdU and gave DNA in which both strands were substituted with analog. It would appear that intrinsic cellular factors regulate the response to BrdU and that Burkitt's tumor lines are characterized by their ability to make stable doubly substituted DNA containing a high proportion of halogenated analog.[1]References
- Differences in the incorporation of bromodeoxyuridine by human lymphoblastoid cell lines. Henderson, E.E., Strauss, B. Cell (1975) [Pubmed]
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