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- W2073772870 abstract "Abstract Understanding how neurons adopt particular fates is a fundamental challenge in developmental neurobiology. To address this issue, we have been studying a Caenorhabditis elegans lineage that produces the HSN motor neuron and the PHB sensory neuron, sister cells produced by the HSN/PHB precursor. We have previously shown that the novel protein HAM-1 controls the asymmetric neuroblast division in this lineage. In this study we examine tbx-2 and egl-5, genes that act in concert with ham-1 to regulate HSN and PHB fate. In screens for mutants with abnormal HSN development, we identified the T-box protein TBX-2 as being important for both HSN and PHB differentiation. TBX-2, along with HAM-1, regulates the migrations of the HSNs and prevents the PHB neurons from adopting an apoptotic fate. The homeobox gene egl-5 has been shown to regulate the migration and later differentiation of the HSN. While mutations that disrupt its function show no obvious role for EGL-5 in PHB development, loss of egl-5 in a ham-1 mutant background leads to PHB differentiation defects. Expression of EGL-5 in the HSN/PHB precursor but not in the PHB neuron suggests that EGL-5 specifies precursor fate. These observations reveal a role for both EGL-5 and TBX-2 in neural fate specification in the HSN/PHB lineage." @default.
- W2073772870 created "2016-06-24" @default.
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- W2073772870 date "2008-06-01" @default.
- W2073772870 modified "2023-09-25" @default.
- W2073772870 title "The T-Box Gene tbx-2, the Homeobox Gene egl-5 and the Asymmetric Cell Division Gene ham-1 Specify Neural Fate in the HSN/PHB Lineage" @default.
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- W2073772870 doi "https://doi.org/10.1534/genetics.108.088948" @default.
- W2073772870 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2429882" @default.
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