Positive Elements in the Laminin γ1 Gene Synergize to Activate High Level Transcription during Cellular Differentiation
1996
Transcription of the murine laminin gamma 1 gene is activated during retinoic acid/cAMP induced differentiation of F9 embryonal carcinoma cells. Positive transcription control elements associated with two DNase I hypersensitive regions in the large first intron of the gene have been identified which confer a differentiation response on the laminin gamma 1 promoter. However, the kinetics of transcriptional activation suggest each DNA region interacts with transcription factors appearing at different times during differentiation. Synergy between the two regions in cis causes high level activation.
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