A 2ND PROMOTER AND ENHANCER ELEMENT WITHIN THE IMMUNOGLOBULIN HEAVY-CHAIN LOCUS

被引:36
作者
KOTTMANN, AH [1 ]
ZEVNIK, B [1 ]
WELTE, M [1 ]
NIELSEN, PJ [1 ]
KOHLER, G [1 ]
机构
[1] MAX PLANCK INST IMMUNBIOL,D-79108 FREIBURG,GERMANY
关键词
IMMUNOGLOBULIN HEAVY CHAIN REARRANGEMENT; CIS ACTING ELEMENT; REGULATION OF REARRANGEMENT; B CELL ONTOGENY;
D O I
10.1002/eji.1830240407
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
The joining of immunoglobulin gene segments during B cell development consists of a tightly regulated series of rearrangement steps. A variety of experiments have suggested that transcription is involved in activating the locus as substrate for the V(D)J recombinase. Here, we have characterized a region located immediately upstream of the most J-proximal D element (DQ52),which contains both promoter and enhancer activities preferentially active in precursors of B cells. Interestingly, this DQ52 regulatory element is inevitably deleted in fully rearranged H chain genes. We propose that it is involved in the early activation and rearrangement events at the IgH locus.
引用
收藏
页码:817 / 821
页数:5
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