PMID- 30231518 OWN - NLM STAT- MEDLINE DCOM- 20190121 LR - 20231213 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 19 IP - 9 DP - 2018 Sep 18 TI - SA4503, A Potent Sigma-1 Receptor Ligand, Ameliorates Synaptic Abnormalities and Cognitive Dysfunction in a Mouse Model of ATR-X Syndrome. LID - 10.3390/ijms19092811 [doi] LID - 2811 AB - alpha-thalassemia X-linked intellectual disability (ATR-X) syndrome is caused by mutations in ATRX. An ATR-X model mouse lacking Atrx exon 2 displays phenotypes that resemble symptoms in the human intellectual disability: cognitive defects and abnormal dendritic spine formation. We herein target activation of sigma-1 receptor (Sig-1R) that can induce potent neuroprotective and neuroregenerative effects by promoting the activity of neurotrophic factors, such as brain-derived neurotrophic factor (BDNF). We demonstrated that treatment with SA4503, a potent activator of Sig-1R, reverses axonal development and dendritic spine abnormalities in cultured cortical neurons from ATR-X model mice. Moreover, the SA4503 treatment rescued cognitive deficits exhibited by the ATR-X model mice. We further found that significant decreases in the BDNF-protein level in the medial prefrontal cortex of ATR-X model mice were recovered with treatment of SA4503. These results indicate that the rescue of dendritic spine abnormalities through the activation of Sig-1R has a potential for post-diagnostic therapy in ATR-X syndrome. FAU - Yamaguchi, Kouya AU - Yamaguchi K AD - Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan. kouya.yamaguchi.r3@dc.tohoku.ac.jp. FAU - Shioda, Norifumi AU - Shioda N AD - Department of Genomic Neurology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto 860-0811, Japan. shioda@kumamoto-u.ac.jp. FAU - Yabuki, Yasushi AU - Yabuki Y AD - Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan. yabukiy@m.tohoku.ac.jp. FAU - Zhang, Chen AU - Zhang C AD - College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 31005, Zhejiang, China. chenzhang@zju.edu.cn. FAU - Han, Feng AU - Han F AD - School of Pharmacy, Nanjing Medical University, Nanjing 211166, Jiangsu, China. fenghan169@njmu.edu.cn. FAU - Fukunaga, Kohji AU - Fukunaga K AUID- ORCID: 0000-0001-8526-2824 AD - Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan. kfukunaga@m.tohoku.ac.jp. LA - eng GR - 24659024/MEXT/JSPS KAKENHI/ GR - 25110705/MEXT/JSPS KAKENHI/ PT - Journal Article DEP - 20180918 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Ligands) RN - 0 (Neuroprotective Agents) RN - 0 (Piperazines) RN - 0 (Receptors, sigma) RN - 9J7A4144BX (SA 4503) RN - ATR-X syndrome SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/metabolism MH - Cells, Cultured MH - Cognitive Dysfunction/*drug therapy/etiology/physiopathology MH - Disease Models, Animal MH - Ligands MH - Male MH - Mental Retardation, X-Linked/complications/*drug therapy/physiopathology MH - Mice, Inbred C57BL MH - Neuroprotective Agents/*therapeutic use MH - Piperazines/*therapeutic use MH - Receptors, sigma/*metabolism MH - alpha-Thalassemia/complications/*drug therapy/physiopathology MH - Sigma-1 Receptor PMC - PMC6163584 OTO - NOTNLM OT - ATR-X syndrome OT - brain-derived neurotrophic factor OT - cognitive function OT - dendritic spine OT - sigma-1 receptor COIS- The authors declare no conflict of interest. EDAT- 2018/09/21 06:00 MHDA- 2019/01/22 06:00 PMCR- 2018/09/01 CRDT- 2018/09/21 06:00 PHST- 2018/07/31 00:00 [received] PHST- 2018/09/10 00:00 [revised] PHST- 2018/09/12 00:00 [accepted] PHST- 2018/09/21 06:00 [entrez] PHST- 2018/09/21 06:00 [pubmed] PHST- 2019/01/22 06:00 [medline] PHST- 2018/09/01 00:00 [pmc-release] AID - ijms19092811 [pii] AID - ijms-19-02811 [pii] AID - 10.3390/ijms19092811 [doi] PST - epublish SO - Int J Mol Sci. 2018 Sep 18;19(9):2811. doi: 10.3390/ijms19092811.