Kappa immunoglobulin promoters and enhancers display developmentally controlled interactions
Open Access
- 1 January 1993
- journal article
- Published by Oxford University Press (OUP) in Nucleic Acids Research
- Vol. 21 (21) , 4941-4947
- https://doi.org/10.1093/nar/21.21.4941
Abstract
We have investigated the interaction of the kappa immunoglobulin light chain intron and 3′ enhancers with two different kappa promoters at distinct stages of B-cell development. We find that transiently transfected reporter gene constructs driven by either the kappa V-region promoter, or the kappa germline promoter, are controlled by the known enhancers of the locus in a developmentally regulated fashion. We have, however, observed differences in promoter activation by eachenhancer. Moreover, constructs controlled by a combination of both enhancers are synergistically activated at the B-cell and plasma cell stages as compared with constructs containing either enhancer alone. This synergy is not observed early in development, at the pre-B cell stage. The pattern of enhancer and promoter interactions is discussed in the context of theknown developmental regulation of the locus.Keywords
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