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Drosophila is an ideal system for identifying genes that control central nervous system (CNS) development. Particularly useful tools include molecular markers for subsets of neural precursors (neuroblasts) and the simple expression pattern of the even-skipped (eve) gene in a subset of neurons. Here we provide additional molecular markers for identified(More)
BACKGROUND The Drosophila central nervous system develops from stem cell like precursors called neuroblasts, which divide unequally to bud off a series of smaller daughter cells called ganglion mother cells. Neuroblasts show cell-cycle-specific asymmetric localization of both RNA and proteins: at late interphase, prospero RNA and Inscuteable, Prospero and(More)
In the Drosophila CNS, early neuroblast formation and fate are controlled by the pair-rule class of segmentation genes. The distantly related Schistocerca (grasshopper) embryo has a similar arrangement of neuroblasts, despite lack of known pair-rule gene function. Does divergent pair-rule gene function lead to different neuroblast identities, or can(More)
The acquisition of competence is a key mechanism for refining global signals to distinct spatial and temporal responses. The molecular basis of competence, however, remains poorly understood. Here, we show that the beta FTZ-F1 orphan nuclear receptor functions as a competence factor for stage-specific responses to the steroid hormone ecdysone during(More)
The generation of cellular diversity is essential in embryogenesis, especially in the central nervous system. During neurogenesis, cell interactions or asymmetric protein localization during mitosis can generate daughter cells with different fates. Here we describe the asymmetric localization of a messenger RNA and an RNA-binding protein that creates(More)
Nuclear magnetic resonance (NMR) imaging in vivo of adult rat brains was used to observe the fate of iron oxide-labeled intracerebral neural grafts. The host animals received grafts of fetal (E17-E18) rat tissue prepared as cell suspensions and labeled by incubation with reconstituted Sendai viral envelopes containing iron oxide particles. Control studies(More)
Please note: The talk will be based on the attached published paper and related subsequent work. Unfortunately, the subsequent work is not currently legally authorized to circulate in written form, although I am cleared to present it. Abstract: Every day, acts of violence injure over 6,000 people in the U.S. Despite decades of social science arguing that(More)
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