char = M;code = 77
char = i;code = 105
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char = o;code = 111
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char = A;code = 65
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char = g;code = 103
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = T;code = 84
char = L;code = 76
char = X;code = 88
char = /;code = 47
char = m;code = 109
char = i;code = 105
char = c;code = 99
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char = o;code = 111
char = R;code = 82
char = N;code = 78
char = A;code = 65
char = -;code = 45
char = 9;code = 57
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = s;code = 115
char = c;code = 99
char = a;code = 97
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = l;code = 108
char = ;code = 32
char = n;code = 110
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char = u;code = 117
char = r;code = 114
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = ;code = 32
char = f;code = 102
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = n;code = 110
char = e;code = 101
char = u;code = 117
char = r;code = 114
char = o;code = 111
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = .;code = 46
result sql = MicroRNA let-7d regulates the TLX/microRNA-9 cascade to control neural cell fate and neurogenesis.
MicroRNA let-7d regulates the TLX/microRNA-9 cascade to control neural cell fate and neurogenesis.
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result sql = MicroRNAs have important functions in the nervous system through post-transcriptional regulation of neurogenesis genes. Here we show that microRNA let-7d, which has been implicated in cocaine addiction and other neurological disorders, targets the neural stem cell regulator TLX. Overexpression of let-7d in vivo reduced neural stem cell proliferation and promoted premature neuronal differentiation and migration, a phenotype similar to those induced by TLX knockdown or overexpression of its negatively-regulated target, microRNA-9. We found a let-7d binding sequence in the tlx 3' UTR and demonstrated that let-7d reduced TLX expression levels in neural stem cells, which in turn, up-regulated miR-9 expression. Moreover, co-expression of let-7d and TLX lacking its 3' UTR in vivo restored neural stem cell proliferation and reversed the premature neuronal differentiation and migration. Therefore, manipulating let-7d and its downstream targets could be a novel strategy to unravel neurogenic signaling pathways and identify potential interventions for relevant neurological disorders.

Publication: Sci Rep 2013 ;3:1329. :doi: 10.1038/srep01329.
Publication Date: 2013
Study Author(s): Zhao, Chunnian;Sun, GuoQiang;Ye, Peng;Li, Shengxiu;Shi, Yanhong;
Institution: Department of Neurosciences, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd, Duarte, CA 91010, USA.
Shortcut link to this study:
MicroRNAs have important functions in the nervous system through post-transcriptional regulation of neurogenesis genes. Here we show that microRNA let-7d, which has been implicated in cocaine addiction and other neurological disorders, targets the neural stem cell regulator TLX. Overexpression of let-7d in vivo reduced neural stem cell proliferation and promoted premature neuronal differentiation and migration, a phenotype similar to those induced by TLX knockdown or overexpression of its negatively-regulated target, microRNA-9. We found a let-7d binding sequence in the tlx 3' UTR and demonstrated that let-7d reduced TLX expression levels in neural stem cells, which in turn, up-regulated miR-9 expression. Moreover, co-expression of let-7d and TLX lacking its 3' UTR in vivo restored neural stem cell proliferation and reversed the premature neuronal differentiation and migration. Therefore, manipulating let-7d and its downstream targets could be a novel strategy to unravel neurogenic signaling pathways and identify potential interventions for relevant neurological disorders.
PMID: 23435502

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