NDLI: The conserved decanucleotide from the immunoglobulin heavy chain promoter induces a very high transcriptional activity in B-cells when introduced into an heterologous promoter.

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The conserved decanucleotide from the immunoglobulin heavy chain promoter induces a very high transcriptional activity in B-cells when introduced into an heterologous promoter.

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The conserved decanucleotide from the immunoglobulin heavy chain promoter induces a very high transcriptional activity in B-cells when introduced into an heterologous promoter.

Content Provider	PubMed Central
Author	Dreyfus, M. Doyen, N. Rougeon, F.
Abstract	A conserved decanucleotide (ATGCAAATNA) is present 45-60 nucleotides upstream from the transcription startpoint in all immunoglobulin heavy chain promoters (VH promoters). We have introduced this decanucleotide (cd sequence) at a similar position into the upstream flanking sequence of the mouse Renin-1 gene. This gene is only transcribed in highly specialized tissues, and the fragment used here (-449 to +30 with respect to the main transcription startpoint) has little promoter activity in fibroblastic or myeloma cell lines, even if coupled to a functional enhancer. In contrast, after insertion of the decanucleotide, this fragment, while still inactive in non-lymphoid cells, becomes a potent promoter in B-cells when associated with SV40 or immunoglobulin heavy chain enhancer. In all respects, the engineered fragment behaves like an authentic VH promoter isolated in this laboratory, except that it is even more active in B-cells. Deletion experiments show that all renin sequences are dispensable for the activity of the chimaeric promoter, except probably for the renin TATA box which defines the precise transcription startpoint. We conclude that the decanucleotide is sufficient to activate a promoter in B-cells but not in non-B-cells, and therefore that no other element is needed to account for the B-cell specificity of the VH promoter. In addition, our results suggest that the lack of activity of the renin promoter in non cognate cells is not due to the binding of a repressor.
Starting Page	1685
File Format	PDF
ISSN	14602075
e-ISSN	14602075
Journal	The EMBO Journal
Issue Number	6
Volume Number	6
Language	English
Publisher Date	1987-06-01
Access Restriction	Open
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Neuroscience Immunology and Microbiology Medicine Molecular Biology

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