A genome-wide screen identifies PAPP-AA-mediated IGFR signaling as a novel regulator of habituation learning.
A genome-wide screen identifies PAPP-AA-mediated IGFR signaling as a novel regulator of habituation learning.
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DOI:
10.1016/j.neuron.2015.02.025
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发表时间:
2015-03-18
期刊:
影响因子:
16.2
通讯作者:
Granato, Michael
中科院分区:
文献类型:
--
作者:
Wolman, Marc A.;Jain, Roshan A.;Marsden, Kurt C.;Bell, Hannah;Skinner, Julianne;Hayer, Katharina E.;Hogenesch, John B.;Granato, Michael
Habituation represents a fundamental form of learning, yet the underlying molecular genetic mechanisms are not well defined. Here we report on a genome-wide genetic screen, coupled with whole genome sequencing, that identified 14 zebrafish startle habituation mutants including mutants of the vertebrate specific gene pregnancy associated plasma protein-aa (pappaa). PAPP-AA encodes an extracellular metalloprotease known to increase IGF bioavailability thereby enhancing IGF receptor signaling. We find that pappaa is expressed by startle circuit neurons, and expression of wildtype, but not a metalloprotease-inactive version of pappaa restores habituation in pappaa mutants. Furthermore, acutely inhibiting IGF1R function in wild-type reduces habituation, while activation of IGF1R downstream effectors in pappaa mutants restores habituation, demonstrating that pappaa promotes learning by acutely and locally increasing IGF bioavailability. In sum, our results define the first functional gene set for habituation learning in a vertebrate, and identify PAPPAA-regulated IGF signaling as a novel mechanism regulating habituation learning.
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影响因子:
3.7
作者:
Benedict, C;Hallschmid, M;Kern, W
通讯作者:
Kern, W
影响因子:
5.3
作者:
Burgess, Harold A.;Granato, Michael
通讯作者:
Granato, Michael
DOI:
10.1073/pnas.58.3.1112
发表时间:
1967-01-01
影响因子:
11.1
作者:
BENZER, S
通讯作者:
BENZER, S
影响因子:
4.1
作者:
Boldt, HB;Overgaard, MT;Oxvig, C
通讯作者:
Oxvig, C
影响因子:
5.7
作者:
Carboni, Joan M.;Wittman, Mark;Gottardis, Marco M.
通讯作者:
Gottardis, Marco M.