星球细胞控制可卡因诱导的突触可塑性,并通过母细胞蛋白Hevin奖励
Raphaële Mongrédien1, Augusto Anesio2, Gustavo J D Fernandes2
1Sorbonne Université, INSERM, CNRS, Neuroscience Paris Seine, Paris, France.
Biological psychiatry
|March 20, 2025
概括
可卡因会改变核突中的星细胞 (Ca2+) 信号,这些信号对于发展寻找可卡因的行为至关重要. 蛋白质hevin调解了这些对奖励和神经元可塑性的影响.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 神经药理学神经药理学
背景情况:
- 星球细胞在核 (NAc) 中调节谷氨类神经传递,影响与药物成相关的突触可塑性.
- 星球细胞衍生因素可能导致大脑电路变化,导致药物寻找行为.
研究的目的:
- 为了研究细胞 (Ca2+) 信号 in vivo 和分泌的蛋白质hevin 在可卡因的奖励作用中的作用.
主要方法:
- 在体内纤维光度测量了在可卡因条件下的位置偏好 (CPP) 期间的NAc天体细胞Ca2+信号.
- 化学遗传学和Ca2+耗尽评估了天体细胞Ca2+信号对可卡因CPP的贡献.
- 使用脊柱成像,电生理学和CPP研究了hevin-null小鼠和NAc天体细胞中的hevin敲击.
主要成果:
- 暴露于可卡因增加了NAc天体细胞Ca2+信号幅度.
- 调节天体细胞Ca2+信号改变了可卡因CPP的获取.
- 在NAc天体细胞中降低了Hevin knockdown,减少了可卡因诱导的CPP和神经元可塑性.
结论:
- 可卡因微调NAc天体细胞Ca2+信号,这对于寻找可卡因的行为至关重要.
- 天体细胞释放的赫是可卡因对奖励和神经元可塑性影响的关键调解者.
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