单胺转运器无处不在和向内开放的构造协同最大限度地提高了转运器内细胞化
Tatiana Sorkina1, Tarique Bagalkot1, Mary Hongying Cheng2
1Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
Science advances
|November 22, 2024
概括
像安非他胺这样的基质会触发多巴胺转运体 (DAT) 的依赖蛋白激酶C (PKC) 的无化和内细胞化. 这个过程涉及形状变化和传送器运动,影响神经元信号传递.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 单胺转运体调节神经元中的神经递质水平.
- 控制细胞表面转运体表达的机制尚未完全理解.
- 基质结合和细胞内信号影响转运器运输.
研究的目的:
- 阐明调节单胺转运体,特别是多巴胺转运体 (DAT) 在细胞表面表达的机制.
- 为了研究基质,蛋白激酶C (PKC) 和DAT内细胞突变中的泛化作用.
- 探索运输体构成对内细胞通路的影响.
主要方法:
- 研究了DAT基质 (安非他胺,多巴胺) 对神经细胞中DAT内细胞的作用.
- 利用技术来评估PKC依赖的泛化和DAT的克拉介导的内细胞分裂.
- 操纵DAT形状 (向外开放的OO,向内开放的IO) 来研究其对内细胞形成的影响.
- 对比了安非他胺对DAT,NET和SERT内细胞和无处不在的作用.
主要成果:
- 多巴胺转运器 (DAT) 基质,安非他胺和多巴胺,与PKC依赖的无化协同作用,以增强DAT的克拉斯林介导的内细胞分裂.
- DAT基板促进DAT移动远离负曲的血膜区域.
- 将DAT形态改变为向内开放 (IO) 或破坏向外开放 (OO) 状态模仿基质对内细胞形成的影响.
- 氨基胺强烈增加了PKC依赖的诺拉上腺素载体 (NET) 的内细胞,但不是血清素载体 (SERT),与差异性的无处不在水平相关.
结论:
- 提出了一种"形状转换"模型:从OO转变为IO符合者,促进了PKC依赖的无处不在和内细胞分裂.
- 载体形状的变化会影响它们在曲的膜中被保留,从而导致内细胞分裂.
- 这些发现为对单胺转运器贩运和神经元信号的调节提供了新的见解.
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