Cytosolic Accumulation of L-Proline Disrupts GABA-Ergic Transmission through GAD Blockade.
Cytosolic Accumulation of L-Proline Disrupts GABA-Ergic Transmission through GAD Blockade.
复制标题
DOI:
10.1016/j.celrep.2016.09.029
复制
发表时间:
2016-10-04
期刊:
影响因子:
8.8
通讯作者:
Gogos JA
中科院分区:
文献类型:
--
作者:
Crabtree GW;Park AJ;Gordon JA;Gogos JA
Proline dehydrogenase (PRODH), which degrades L-proline, resides within the schizophrenia-linked 22q11.2 deletion suggesting a role in disease. Supporting this, elevated L-proline levels have been shown to increase risk for psychotic disorders. Despite the strength of data linking PRODH and L-proline to neuropsychiatric diseases, targets of disease-relevant concentrations of L-proline have not been convincingly described. Here we show that Prodh-deficient mice with elevated CNS L-proline display specific deficits in high-frequency GABA-ergic transmission and gamma-band oscillations. We find that L-proline is a GABA-mimetic and can act at multiple GABA-ergic targets. However, at disease-relevant concentrations, GABA-mimesis is limited to competitive blockade of glutamate decarboxylase leading to reduced GABA production. Significantly, deficits in GABA-ergic transmission are reversed by enhancing net GABA production with the clinically-relevant compound vigabatrin. These findings indicate that accumulation of a neuroactive metabolite can lead to molecular and synaptic dysfunction and help to understand mechanisms underlying neuropsychiatric disease.
登录
查看更多内容
影响因子:
14.8
作者:
Bennett, Bryson D.;Yuan, Jie;Rabinowitz, Joshua D.
通讯作者:
Rabinowitz, Joshua D.
影响因子:
25
作者:
Constantinidis, C;Williams, GV;Goldman-Rakic, PS
通讯作者:
Goldman-Rakic, PS
影响因子:
5.3
作者:
Fenelon, Karine;Xu, Bin;Gogos, Joseph A.
通讯作者:
Gogos, Joseph A.
影响因子:
11
作者:
Jacquet, H;Demily, C;Campion, D
通讯作者:
Campion, D
影响因子:
7.6
作者:
Heldt, SA;Green, A;Ressler, KJ
通讯作者:
Ressler, KJ