Abstract:
:Interleukin 1 (IL-1) induces the synthesis of kappa immunoglobulin light chains and the expression of surface immunoglobulin in the murine pre-B-cell line 70Z/3 (J. G. Giri, P. W. Kincade, and S. B. Mizel, J. Immunol. 132:223-228, 1984). In the present study, we found that these effects of IL-1 are mimicked by cyclic AMP (cAMP) analogs and cAMP-elevating drugs. The induction of kappa immunoglobulin light-chain gene expression by IL-1 was associated with an increase in intracellular cAMP levels. Incubation of 70Z/3 cells with IL-1 or cAMP resulted in the activation of the kappa immunoglobulin enhancer, as detected by the induction of chloramphenicol acetyltransferase (CAT) in cells transfected with a kappa enhancer-CAT expression plasmid. In contrast, CAT plasmids lacking a kappa immunoglobulin enhancer were inactive in the presence of IL-1 or cAMP. Furthermore, IL-1 and cAMP analogs and inducers were found to induce the activation of a NF-kappa B-like DNA-binding protein that exhibited specificity for the kappa immunoglobulin enhancer. These results suggest that cAMP may play an important role as a second messenger for IL-1 in the induction of kappa immunoglobulin light-chain synthesis in pre-B cells via the activation of a DNA-binding protein that is similar or identical to NF-kappa B.
journal_name
Mol Cell Bioljournal_title
Molecular and cellular biologyauthors
Shirakawa F,Chedid M,Suttles J,Pollok BA,Mizel SBdoi
10.1128/mcb.9.3.959subject
Has Abstractpub_date
1989-03-01 00:00:00pages
959-64issue
3eissn
0270-7306issn
1098-5549journal_volume
9pub_type
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