原cadherin-γA3可变细胞质域的乌比基因化调节细胞与细胞的相互作用
Albert Ptashnik1,2, Nicole LaMassa1,2, Aliya Mambetalieva1
1Department of Biology, College of Staten Island, City University of New York, New York, NY, United States.
Frontiers in cell and developmental biology
|October 4, 2023
概括
集群的原始干素 (Pcdhs) 介导神经细胞相互作用. 这项研究揭示Pcdh-γA无处不在影响表面表达和粘合活性,可能调节神经发育.
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
- 分子生物学分子生物学
背景情况:
- 集群原始素 (Pcdhs) 是细胞粘附分子,对神经发育至关重要.
- Pcdhs产生神经表面"条形码",调解自我和其他细胞的相互作用.
- 控制Pcdh介导的粘附和避免的机制仍然不完全理解.
研究的目的:
- 研究细胞内贩运和Pcdh功能的翻译后修饰的作用.
- 阐明了Pcdh介导的粘附切换背后的细胞质调节机制.
主要方法:
- 用了PCdh-γA3的""构造,缺少常数卡基终端域来研究贩运.
- 使用Rab7阳性内分泌体分析了贩运模式.
- 通过删除映射和伪酸化,研究了无处不在和其对表面表达的影响.
主要成果:
- Pcdh-γA3 块构建了通往 Rab7 阳性内分体的流量,类似于全长的 Pcdh.
- 删除碳氧终端干扰了贩运.
- 完好无损的块显示非氨酸的泛化,通过在已识别的血清位点的伪酸化来减少,导致表面表达增加.
结论:
- Pcdh 无处不在影响了表面表达水平.
- 翻译后的修改,如ubiquitination和酸化,可能会作为一个调节Pcdh粘合活性的"开关".
- 这些发现提供了关于控制神经发育中的PCdh功能的细胞生物机制的见解.
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