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Cell Growth & Differentiation, Vol 6, Issue 2 179-184, Copyright © 1995 by American Association of Cancer Research

ARTICLES

Role of cell type-specific promoters in the developmental regulation of T1, an interleukin 1 receptor homologue

E Thomassen, G Kothny, S Haas, J Danescu, L Hultner, P Dormer and AK Werenskiold
Abt. Zellchemie, GSF-Forschungszentrum fur Umwelt und Gesundheit, Neuherberg, Federal Republic of Germany.

Murine T1, an orphan receptor related to interleukin 1 receptors, exhibits a bimodal expression in mouse development. The molecular analysis of cultured cell lines now reveals the contribution of alternate promoters of the T1 gene to its differential expression. In nonhemopoietic cell types, where T1 synthesis in vivo is restricted to organogenesis and neoplasia, a recently characterized AP-1-dependent promoter directs a proliferation-associated expression of the gene. In hemopoietic cells, which express the T1 receptor throughout ontogenesis in vivo, T1 gene activity is driven by a novel serum factor-independent, constitutive promoter. The tissue-specific use of constitutive versus growth factor-dependent alternate promoters thus directs the permanent activity of the T1 gene in hemopoietic tissue versus the developmentally restricted expression of the gene in nonhemopoietic tissues in vivo.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Cancer Research Clinical Cancer Research
Cancer Epidemiology Biomarkers & Prevention Molecular Cancer Therapeutics
Molecular Cancer Research Cell Growth & Differentiation
Copyright © 1995 by the American Association of Cancer Research.