Immunoglobulin kappa gene rearrangements between the kappa deleting element and Jkappa recombination signal sequences in acute lymphoblastic leukemia and normal hematopoiesis

Seriu, T.; Hansen-Hagge, T.E.; Stark, Y.; Bartram, C.R.

Leukemia 14(4): 671-674

2000


ISSN/ISBN: 0887-6924
PMID: 10764153
Document Number: 521664
The kappa deleting element (kappaDE) located 24 kb downstream of the Ckappa gene segment mediates the deletion of Ckappa and the Jkappa-Ckappa Intron enhancer, which results in allelic exclusion of the immunoglobulin kappa light chain locus. We here report that the kappaDE can recombine to each recombination signal sequence (RSS) flankappaing Jkappa1 to Jkappa5 in normal hematopoiesis. Moreover, usage of the JkappaRSS-kappaDE junctional sequence allows the detection of minimal residual disease in acute lymphoblastic leukemia.

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