Unknown

Dataset Information

0

Autism phenotypes in ZnT3 null mice: Involvement of zinc dyshomeostasis, MMP-9 activation and BDNF upregulation.


ABSTRACT: To investigate the role of synaptic zinc in the ASD pathogenesis, we examined zinc transporter 3 (ZnT3) null mice. At 4-5 weeks of age, male but not female ZnT3 null mice exhibited autistic-like behaviors. Cortical volume and neurite density were significantly greater in male ZnT3 null mice than in WT mice. In male ZnT3 null mice, consistent with enhanced neurotrophic stimuli, the level of BDNF as well as activity of MMP-9 was increased. Consistent with known roles for MMPs in BDNF upregulation, 2.5-week treatment with minocycline, an MMP inhibitor, significantly attenuated BDNF levels as well as megalencephaly and autistic-like behaviors. Although the ZnT3 null state removed synaptic zinc, it rather increased free zinc in the cytosol of brain cells, which appeared to increase MMP-9 activity and BDNF levels. The present results suggest that zinc dyshomeostasis during the critical period of brain development may be a possible contributing mechanism for ASD.

SUBMITTER: Yoo MH 

PROVIDER: S-EPMC4926223 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

altmetric image

Publications

Autism phenotypes in ZnT3 null mice: Involvement of zinc dyshomeostasis, MMP-9 activation and BDNF upregulation.

Yoo Min Heui MH   Kim Tae-Youn TY   Yoon Young Hee YH   Koh Jae-Young JY  

Scientific reports 20160629


To investigate the role of synaptic zinc in the ASD pathogenesis, we examined zinc transporter 3 (ZnT3) null mice. At 4-5 weeks of age, male but not female ZnT3 null mice exhibited autistic-like behaviors. Cortical volume and neurite density were significantly greater in male ZnT3 null mice than in WT mice. In male ZnT3 null mice, consistent with enhanced neurotrophic stimuli, the level of BDNF as well as activity of MMP-9 was increased. Consistent with known roles for MMPs in BDNF upregulation,  ...[more]

Similar Datasets

| S-EPMC3311647 | biostudies-literature
| S-EPMC11461517 | biostudies-literature
| S-EPMC3060652 | biostudies-other
| S-EPMC7488477 | biostudies-literature
| S-EPMC5472997 | biostudies-literature
| S-EPMC3299759 | biostudies-literature
| S-EPMC11726163 | biostudies-literature
| S-EPMC11923526 | biostudies-literature
2010-03-31 | GSE18310 | GEO
2010-04-12 | E-GEOD-18310 | biostudies-arrayexpress