title: Expression and downregulation of cytotoxic cell protease 1 or Granzyme 'B' transcripts during myeloid differentiation of interleukin-3-dependent murine stem cell lines.
abstract: Using the technique of differential cDNA library screening, we have molecularly cloned a gene that is highly expressed in an undifferentiated myeloid multipotent and growth factor-dependent stem cell line (FDCP-Mix) and that downregulates as these cells are induced to differentiate along monocytic, granulocytic, and erythroid cell lineages. Sequence analysis of this gene has shown homology with a previously cloned gene, cytotoxic cell protease 1 (CCP1 or Granzyme 'B'), that has been shown to be expressed only in thymocytes, activated T cells, a mast cell line, and peritoneal exudate leukocytes. In situ hybridization, Northern blot analysis, and nuclear run-off assay has confirmed that expression of CCP1 is restricted to the phenotypically primitive multipotent undifferentiated. FDCP-Mix cells that are undergoing self-renewal in the presence of growth factors such as interleukin-3.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002454:Cell Differentiation / Q000187:drug effects; D002460:Cell Line; D003001:Cloning, Molecular; D015971:Gene Expression Regulation, Enzymologic / Q000187:drug effects*; D015723:Gene Library; D016179:Granulocyte Colony-Stimulating Factor / Q000494:pharmacology; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000494:pharmacology; D053804:Granzymes; D006133:Growth Substances / Q000494:pharmacology*; D007377:Interleukin-3 / Q000494:pharmacology*; D015850:Interleukin-6 / Q000494:pharmacology; D016173:Macrophage Colony-Stimulating Factor / Q000494:pharmacology; D051379:Mice; D008969:Molecular Sequence Data; D016366:Open Reading Frames; D012313:RNA / Q000235:genetics / Q000302:isolation & purification; D011994:Recombinant Proteins / Q000494:pharmacology; D012697:Serine Endopeptidases / Q000235:genetics*; D013234:Stem Cells; D014158:Transcription, Genetic / Q000187:drug effects; D016212:Transforming Growth Factor beta / Q000494:pharmacology
chemical_list: D006133:Growth Substances; D007377:Interleukin-3; D015850:Interleukin-6; D011994:Recombinant Proteins; D016212:Transforming Growth Factor beta; D016179:Granulocyte Colony-Stimulating Factor; D012313:RNA; D016173:Macrophage Colony-Stimulating Factor; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D053804:Granzymes; C509214:Gzmb protein, mouse; D012697:Serine Endopeptidases