Abstract: The subject application relates to a hematopoietic stem cell specific promoter and to a hematopoietic stem cell specific enhancer and to uses therefor. The invention also includes a hematopoietic stem cell specific promoter-heterologous gene construct, where the expression of the heterologous gene is under the control of the myeloid cell type specific promoter. Additionally, the application is drawn to a method of expressing a heterologous gene in a hematopoietic stem cell. The invention further includes a method of expressing a selected heterologous gene product in hematopoietic stem cells in an individual. The invention also includes a transgenic non-human mammal in which the hematopoietic stem cells express a protein encoded by a heterologous gene. Finally the invention includes a method for identifying factors which can regulate hematopoietic stem cell specific transcription.

Abstract: The subject application is drawn to a method of transfecting a myeloid cell line and a method of producing a selected product in a myeloid cell. The invention also includes myeloid cell specific promoters and enhancers, and constructs which contain these promoters and enhancers. The invention further includes a myeloid cell specific promoter-heterologous gene construct, where the expression of the heterologous gene is under the control of the myeloid cell specific promoter. The invention also includes a transgenic non-human mammal in which myeloid cells express a protein encoded by a heterologous gene. Finally the invention includes a method for identifying factors that can regulate myeloid cell specific transcription.