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| Content Provider | Springer Nature Link |
|---|---|
| Author | Su, Rui Han, Zhen Yun Fan, Ji Ping Zhang, Yun Ling |
| Copyright Year | 2010 |
| Abstract | It is believed that amyloid-β peptide (Aβ) plays a central role in the pathogenesis of Alzheimer’s disease (AD). Thus, the process of amyloid precursor protein (APP) cleavage is a key event and has raised much attention in the field of AD research. It is proposed that APP, β- and γ-secretases are all located on the lipid raft, and the meeting of them is an indispensable step for Aβ generation. Endocytosis can lead to clustering of APP, β- and γ-secretases from separate smaller lipid rafts into a larger one. On the other hand, for myristoylated alanine-rich C kinase substrate (MARCKS), phosphorylation by protein kinase C (PKC) or interaction with Ca$^{2+}$ can lead to its release from membrane into cytoplasm. This process induces the release of actins and phosphatidylinositol 4, 5-bisphosphate (PIP$_{2}$), which are important factors for endocytosis. Thus, the present review proposes that MARCKS may be implicated in Aβ generation, by modulating free PIP$_{2}$ level and actin movement, causing endocytosis.β淀粉样蛋白(amyloid β, Aβ)在阿尔茨海默病(Alzheimer’s disease, AD)的发病过程中的重要作用已为人熟知。 淀粉样前体蛋白(amyloid precursor protein, APP)的水解过程也因此成为AD研究的重点。 APP、 β-和γ-分泌酶都位 于脂筏上, 三者的相遇是产生Aβ 的必要步骤, 而胞吞作用则能使分布在微小脂筏上的APP、 β-和γ-分泌酶集中 到较大的脂筏上。 另一方面, 豆蔻酰化的富丙氨酸的蛋白激酶C的底物(myristoylated alanine-rich C kinase substrate, MARCKS)被蛋白激酶C磷酸化或与钙离子作用后, 会离开细胞膜进入细胞质, 进而引起在胞吞作用中起重要作用 的肌动蛋白和4, 5-二磷酸肌醇(PIP$_{2}$)的释放。 因此, 本文提出假说, 认为MARCKS通过调节自由态PIP$_{2}$ 的水平和 肌动蛋白的运动, 引发胞吞作用, 进而在Aβ 的产生过程中起重要作用。 |
| Starting Page | 338 |
| Ending Page | 344 |
| Page Count | 7 |
| File Format | |
| ISSN | 16737067 |
| Journal | Neuroscience Bulletin |
| Volume Number | 26 |
| Issue Number | 4 |
| e-ISSN | 19958218 |
| Language | Chinese |
| Publisher | Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences |
| Publisher Date | 2010-08-06 |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Alzheimer’s disease endocytosis myristoylated alanine-rich C kinase substrate lipid raft phosphatidylinositol 4, 5-bisphosphate actin cytoskeleton Pain Medicine Neurology Anatomy Anesthesiology Human Physiology Neurosciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Neuroscience Physiology Medicine |
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