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    Publication Date: 2015-10-17
    Description: Neural stem cells show age-dependent developmental potentials, as evidenced by their production of distinct neuron types at different developmental times. Drosophila neuroblasts produce long, stereotyped lineages of neurons. We searched for factors that could regulate neural temporal fate by RNA-sequencing lineage-specific neuroblasts at various developmental times. We found that two RNA-binding proteins, IGF-II mRNA-binding protein (Imp) and Syncrip (Syp), display opposing high-to-low and low-to-high temporal gradients with lineage-specific temporal dynamics. Imp and Syp promote early and late fates, respectively, in both a slowly progressing and a rapidly changing lineage. Imp and Syp control neuronal fates in the mushroom body lineages by regulating the temporal transcription factor Chinmo translation. Together, the opposing Imp/Syp gradients encode stem cell age, specifying multiple cell fates within a lineage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Zhiyong -- Yang, Ching-Po -- Sugino, Ken -- Fu, Chi-Cheng -- Liu, Ling-Yu -- Yao, Xiaohao -- Lee, Luke P -- Lee, Tzumin -- R01-GM084947/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Oct 16;350(6258):317-20. doi: 10.1126/science.aad1886.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Janelia Research Campus, 19700 Helix Drive, Ashburn, VA, USA. ; Howard Hughes Medical Institute, Janelia Research Campus, 19700 Helix Drive, Ashburn, VA, USA. Departments of Bioengineering, Electrical Engineering, and Computer Science, and Biophysics Graduate Program, University of California Berkeley, 408C Stanley Hall, Berkeley, CA, USA. ; Departments of Bioengineering, Electrical Engineering, and Computer Science, and Biophysics Graduate Program, University of California Berkeley, 408C Stanley Hall, Berkeley, CA, USA. ; Howard Hughes Medical Institute, Janelia Research Campus, 19700 Helix Drive, Ashburn, VA, USA. leet@janelia.hhmi.org.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26472907" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Lineage ; Drosophila Proteins/genetics/metabolism/*physiology ; Drosophila melanogaster/genetics/*growth & development ; Mushroom Bodies/cytology/growth & development ; Nerve Tissue Proteins/metabolism ; Neural Stem Cells/*cytology ; Neurogenesis/genetics/*physiology ; Neurons/*cytology ; RNA-Binding Proteins/genetics/*physiology ; Sequence Analysis, RNA
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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