APC是一种RNA结合蛋白,其相互作用组为神经发育和微管组装提供了一个链接
Nicolas Preitner1, Jie Quan1, Dan W Nowakowski1
1Department of Cell Biology and Program in Neuroscience, Harvard Medical School, Boston, MA 02115, USA.
Cell
|July 19, 2014
概括
大肠杆菌腺瘤多菌 (APC) 蛋白质结合RNA,包括β2B-氨酸mRNA. 这种相互作用对于神经元迁移至关重要,它通过将蛋白质合成定位到动态微管中.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 神经科学是一个神经科学.
背景情况:
- 腺多样性大肠杆菌 (APC) 是一种关键的微管相关蛋白质,参与各种细胞过程.
- 在RNA局部化中的APC作用及其功能意义尚未完全理解.
研究的目的:
- 为了研究APC的RNA结合能力.
- 确定APC的RNA互动组,并了解其在细胞过程中的功能影响,特别是神经元迁移.
主要方法:
- 通过交联免疫沉降 (HITS-CLIP) 隔离的RNA的高通量测序,以识别与APC结合的RNA.
- 在体外和体内实验,以评估APC-RNA相互作用对基因表达和细胞功能的影响.
主要成果:
- 鉴定出APC是一种RNA结合蛋白,具有显著的RNA相互作用体,其功能丰富于微管组织,细胞运动性,癌症和神经疾病.
- 确定β2B-tubulin mRNA是APC的直接标,APC与3' UTR结合.
- 破坏APC-β2B-氨酸相互作用会损害轴突局部化和β2B-氨酸mRNA的表达,减少生长外围的动态微管,并阻碍神经元迁移.
结论:
- APC充当了支架,结合功能相关的蛋白质和RNA网络.
- 通过将mRNA引导到生长中的动态微管体,APC促进了其自身子单元的局部合成,例如β2B-tubulin,提出了微管体调节的自我组织模型.
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