Specification of Drosophila hematopoietic lineage by conserved transcription factors.
Two major classes of cells observed within the Drosophila hematopoietic repertoire are plasmatocytes/macrophages and crystal cells. The transcription factor Lz (Lozenge), which resembles human AML1 (acute myeloid leukemia- 1) protein, is necessary for the development of crystal cells during embryonic and larval hematopoiesis. Another transcription factor, Gcm (glial cells missing), has previously been shown to be required for plasmatocyte development. Misexpression of Gcm causes crystal cells to be transformed into plasmatocytes. The Drosophila GATA protein Srp (Serpent) is required for both Lz and Gcm expression and is necessary for the development of both classes of hemocytes, whereas Lz and Gcm are required in a lineage-specific manner. Given the similarities of Srp and Lz to mammalian GATA and AML1 proteins, observations in Drosophila are likely to have broad implications for understanding mammalian hematopoiesis and leukemias.
Lebestky
T
T
Molecular Biology Institute, Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095, USA.
Chang
T
T
Hartenstein
V
V
Banerjee
U
U
D000818:Animals; D019070:Cell Lineage; D004268:DNA-Binding Proteins / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology*; D004330:Drosophila / Q000166:cytology* / Q000196:embryology / Q000235:genetics / Q000378:metabolism; D029721:Drosophila Proteins; D050980:GATA Transcription Factors; D018507:Gene Expression Regulation, Developmental; D017344:Genes, Insect; D006410:Hematopoiesis; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000378:metabolism; D006434:Hemocytes / Q000166:cytology* / Q000378:metabolism; D007814:Larva / Q000166:cytology; D008264:Macrophages / Q000166:cytology / Q000378:metabolism; D008954:Models, Biological; D009154:Mutation; D009479:Neuropeptides / Q000235:genetics / Q000502:physiology*; D013696:Temperature; D015534:Trans-Activators / Q000235:genetics / Q000502:physiology*; D014157:Transcription Factors / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology*
D004268:DNA-Binding Proteins; D029721:Drosophila Proteins; D050980:GATA Transcription Factors; C102805:GCM protein, Drosophila; D009479:Neuropeptides; D015534:Trans-Activators; D014157:Transcription Factors; C099964:lz protein, Drosophila; C103965:srp protein, Drosophila