Unknown

Dataset Information

0

NDRG2 Protects the Brain from Excitotoxicity by Facilitating Interstitial Glutamate Uptake.


ABSTRACT: Glutamate is a prominent neurotransmitter responsible for excitatory synaptic transmission and is taken up by sodium-dependent excitatory amino acid transporters (EAATs) on astrocytes to maintain synaptic homeostasis. Here, we report that N-myc downstream regulated gene 2 (NDRG2), a known tumor suppressor, is required to facilitate astroglial glutamate uptake and protect the brain from glutamate excitotoxicity after ischemia. NDRG2 knockout (Ndrg2-/-) mice exhibited an increase in cerebral interstitial glutamate and a reduction in glutamate uptake into astrocytes. The ability of NDRG2 to control EAAT-mediated glutamate uptake into astrocytes required NDRG2 to interact with and promote the function of Na+/K+-ATPase ?1, which could be disrupted by a Na+/K+-ATPase ?1 peptide. The deletion of NDRG2 or treatment with the Na+/K+-ATPase ?1 peptide significantly increased neuronal death upon a glutamate challenge and aggravated brain damage after ischemia. Our findings demonstrate that NDRG2 plays a pivotal role in promoting astroglial glutamate uptake from the interstitial space and protecting the brain from glutamate excitotoxicity.

SUBMITTER: Yin A 

PROVIDER: S-EPMC7067740 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

altmetric image

Publications

NDRG2 Protects the Brain from Excitotoxicity by Facilitating Interstitial Glutamate Uptake.

Yin Anqi A   Guo Hang H   Tao Liang L   Cai Guohong G   Wang Yazhou Y   Yao Libo L   Xiong Lize L   Zhang Jian J   Li Yan Y  

Translational stroke research 20190627 2


Glutamate is a prominent neurotransmitter responsible for excitatory synaptic transmission and is taken up by sodium-dependent excitatory amino acid transporters (EAATs) on astrocytes to maintain synaptic homeostasis. Here, we report that N-myc downstream regulated gene 2 (NDRG2), a known tumor suppressor, is required to facilitate astroglial glutamate uptake and protect the brain from glutamate excitotoxicity after ischemia. NDRG2 knockout (Ndrg2<sup>-/-</sup>) mice exhibited an increase in cer  ...[more]

Similar Datasets

| S-EPMC6769071 | biostudies-literature
| S-EPMC3563982 | biostudies-literature
| S-EPMC3709257 | biostudies-literature
| S-EPMC3321209 | biostudies-literature
| S-EPMC6556795 | biostudies-literature
| S-EPMC2725320 | biostudies-literature
| S-EPMC9443129 | biostudies-literature
| S-EPMC7001228 | biostudies-literature
| S-EPMC9223430 | biostudies-literature
| S-EPMC8379502 | biostudies-literature