
doi: 10.1242/dev.074500
pmid: 22241838
During neural lineage progression, differences in daughter cell proliferation can generate different lineage topologies. This is apparent in the Drosophila neuroblast 5-6 lineage (NB5-6T), which undergoes a daughter cell proliferation switch from generating daughter cells that divide once to generating neurons directly. Simultaneously, neural lineages, e.g. NB5-6T, undergo temporal changes in competence, as evidenced by the generation of different neural subtypes at distinct time points. When daughter proliferation is altered against a backdrop of temporal competence changes, it may create an integrative mechanism for simultaneously controlling cell fate and number. Here, we identify two independent pathways, Prospero and Notch, which act in concert to control the different daughter cell proliferation modes in NB5-6T. Altering daughter cell proliferation and temporal progression, individually and simultaneously, results in predictable changes in cell fate and number. This demonstrates that different daughter cell proliferation modes can be integrated with temporal competence changes, and suggests a novel mechanism for coordinately controlling neuronal subtype numbers.
Medicin och hälsovetenskap, 571, Lineage topology, Daughter cell proliferation, Nerve Tissue Proteins, 612, Medical and Health Sciences, 1309 Developmental Biology, Animals, Genetically Modified, 1312 Molecular Biology, Animals, Drosophila Proteins, Cell Lineage, FMRFamide, Cell Proliferation, Neurons, Receptors, Notch, Neural progenitor, Nuclear Proteins, Cell Differentiation, Temporal competence changes, DNA-Binding Proteins, Drosophila melanogaster, Drosophila, Proliferation control, Signal Transduction, Transcription Factors
Medicin och hälsovetenskap, 571, Lineage topology, Daughter cell proliferation, Nerve Tissue Proteins, 612, Medical and Health Sciences, 1309 Developmental Biology, Animals, Genetically Modified, 1312 Molecular Biology, Animals, Drosophila Proteins, Cell Lineage, FMRFamide, Cell Proliferation, Neurons, Receptors, Notch, Neural progenitor, Nuclear Proteins, Cell Differentiation, Temporal competence changes, DNA-Binding Proteins, Drosophila melanogaster, Drosophila, Proliferation control, Signal Transduction, Transcription Factors
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