Identification of the myb-inducible promoter of the chicken Pdcd4 gene
2001
Schlichter, U. | Kattmann, D. | Appl, H. | Miethe, J. | Brehmer-Fastnacht, A. | Klempnauer, K.H.
The retroviral oncogene v-myb encodes a transcription factor (v-Myb) which disrupts the myelomonocytic differentiation program and transforms myelomonocytic cells in vivo and in vitro. It is thought that v-Myb exerts its biological effects by deregulating the expression of specific target genes, most of which are still unknown. c-myb, the cellular progenitor of v-myb, is expressed in all immature hematopoietic cells and is presumed to regulate the expression of genes that are essential for the development of the hematopoietic system. Recently, we have identified the chicken Pdcd4 gene as a novel v-myb target gene. Pdcd4 has originally been identified in a screen for genes upregulated in apoptotic cells and, more recently, has been implicated in tumor progression. As a myb-regulated gene Pdcd4 is of interest because unlike most other myb target genes it is expressed in a broad spectrum of hematopoietic cells. As a first step to study the regulation of Pdcd4 expression in more detail, we here report the identification and preliminary characterization of the myb-inducible promoter of the Pdcd4 gene.
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