Multiple Behavior Phenotypes of the Fragile-X Syndrome Mouse Model Respond to Chronic Inhibition of Phosphodiesterase-4D (PDE4D).

Multiple Behavior Phenotypes of the Fragile-X Syndrome Mouse Model Respond to Chronic Inhibition of Phosphodiesterase-4D (PDE4D).
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DOI:
10.1038/s41598-017-15028-x
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发表时间:
2017-11-07
期刊:
影响因子:
4.6
通讯作者:
Tranfaglia M
Tranfaglia M
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Gurney ME;Cogram P;Deacon RM;Rex C;Tranfaglia M

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脆性x综合征(FXS)患者由于x连锁的脆性x智力迟钝-1 (FMR1)基因沉默而表现出智力残疾和自闭症谱系障碍。cAMP代谢失调在患者以及小鼠和果蝇FXS模型中是一致的发现。因此,我们探索早期人类临床试验中的原型磷酸二酯酶- 4d阴性变构调节剂(PDE4D-NAM) BPN14770是否可能在小鼠FXS模型中提供治疗效果。每天用BPN14770治疗fmr1 C57Bl6敲除的成年雄性小鼠14天,可以减少过度觉醒,改善社会互动,改善筑巢和大理石掩埋等自然行为以及树突脊柱形态。BPN14770治疗后,对照组C57Bl6的行为评分没有下降。BPN14770的行为益处在停药后持续两周。因此,BPN14770可能可用于治疗脆性x综合征和其他cAMP信号减少的疾病。
Fragile-X syndrome (FXS) patients display intellectual disability and autism spectrum disorder due to silencing of the X-linked, fragile-X mental retardation-1 (FMR1) gene. Dysregulation of cAMP metabolism is a consistent finding in patients and in the mouse and fly FXS models. We therefore explored if BPN14770, a prototypic phosphodiesterase-4D negative allosteric modulator (PDE4D-NAM) in early human clinical trials, might provide therapeutic benefit in the mouse FXS model. Daily treatment of adult male fmr1 C57Bl6 knock-out mice with BPN14770 for 14 days reduced hyperarousal, improved social interaction, and improved natural behaviors such as nesting and marble burying as well as dendritic spine morphology. There was no decrement in behavioral scores in control C57Bl6 treated with BPN14770. The behavioral benefit of BPN14770 persisted two weeks after washout of the drug. Thus, BPN14770 may be useful for the treatment of fragile-X syndrome and other disorders with decreased cAMP signaling.
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