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- W2912996992 abstract "The generation of neuronal diversity is essential for circuit formation and behavior. Morphological differences in sequentially born neurons could be due to intrinsic molecular identity specified by temporal transcription factors (henceforth called intrinsic temporal identity) or due to changing extrinsic cues. Here we use the Drosophila NB7-1 lineage to address this question. NB7-1 generates the U1-U5 motor neurons sequentially; each has a distinct intrinsic temporal identity due to inheritance of different temporal transcription factors at its time of birth. Here we show that the U1-U5 neurons project axons sequentially, followed by sequential dendrite extension. We misexpress the earliest temporal transcription factor, Hunchback, to create “ectopic” U1 neurons with an early intrinsic temporal identity but later birth-order. These ectopic U1 neurons have axon muscle targeting and dendrite neuropil targeting consistent with U1 intrinsic temporal identity, rather than their time of birth or differentiation. We conclude that intrinsic temporal identity plays a major role in establishing both motor axon muscle targeting and dendritic arbor targeting, which are required for proper motor circuit development." @default.
- W2912996992 created "2019-02-21" @default.
- W2912996992 creator A5059592074 @default.
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- W2912996992 date "2019-01-01" @default.
- W2912996992 modified "2023-10-12" @default.
- W2912996992 title "The Hunchback temporal transcription factor determines motor neuron axon and dendrite targeting in <i>Drosophila</i>" @default.
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- W2912996992 doi "https://doi.org/10.1242/dev.175570" @default.
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