Analysis of immunoglobulin and T-cell receptor gene rearrangements in human
fetal bone marrow B lineage cells
TW LeBien, RL Elstrom, M Moseley, JH Kersey and F Griesinger
Department of Laboratory Medicine and Pathology, University of Minnesota
Medical School, Minneapolis 55455.
Fetal bone marrow B lineage cells representing multiple stages of B cell
development were isolated by two-color cell sorting and analyzed for
immunoglobulin H and T-cell receptor (TCR) gamma and delta gene
rearrangements. Analysis of CD10+/surface mu- cells using a JH probe
revealed a high frequency of rearrangements; some of these rearrangements
used the 3' D region gene DQ52. Analysis of CD10+/surface mu- cells
revealed no detectable TCR-gamma or -delta rearrangements, nor were
TCR-delta rearrangements detected in CD10+/surface mu+ cells, despite the
limited repertoire of these genes. These observations are surprising given
the high frequency of TCR delta/gamma rearrangements in B cell precursor
acute lymphoblastic leukemia, and identify a potential difference in
patterns of gene rearrangement that distinguish normal and leukemic B cell
precursors.
Volume 76,
Issue 6,
pp. 1196-1200,
09/15/1990
Copyright © 1990 by The American Society of Hematology