黏液高分泌是慢性气道炎症性疾病的重要病理特征。豆蔻酰化富丙氨酸C激酶底物蛋白(myristoy-lated alanine-rich C kinase substrate,MARCKS)是黏液分泌过程中的关键蛋白。蛋白激酶C或其他激酶、细胞内钙离子浓度、钙调蛋白、纤维型-肌...黏液高分泌是慢性气道炎症性疾病的重要病理特征。豆蔻酰化富丙氨酸C激酶底物蛋白(myristoy-lated alanine-rich C kinase substrate,MARCKS)是黏液分泌过程中的关键蛋白。蛋白激酶C或其他激酶、细胞内钙离子浓度、钙调蛋白、纤维型-肌动蛋白、磷脂酰肌醇4,5二磷酸、热休克蛋白70等均可通过MARCKS的桥梁作用,介导气道分泌颗粒的胞内运动和黏蛋白的出胞释放。展开更多
It is believed that amyloid-βpeptide（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 attent...It is believed that amyloid-βpeptide（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-andγ-secretases are all located on the lipid raft,and the meeting of them is an indispensable step for Aβgeneration.Endocytosis can lead to clustering of APP,β-andγ-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 Ca2＋can lead to its release from membrane into cytoplasm.This process induces the release of actins and phosphatidylinositol 4,5-bisphosphate（PIP2）,which are important factors for endocytosis.Thus,the present review proposes that MARCKS may be implicated in Aβgeneration,by modulating free PIP 2 level and actin movement,causing endocytosis.展开更多
文摘黏液高分泌是慢性气道炎症性疾病的重要病理特征。豆蔻酰化富丙氨酸C激酶底物蛋白(myristoy-lated alanine-rich C kinase substrate,MARCKS)是黏液分泌过程中的关键蛋白。蛋白激酶C或其他激酶、细胞内钙离子浓度、钙调蛋白、纤维型-肌动蛋白、磷脂酰肌醇4,5二磷酸、热休克蛋白70等均可通过MARCKS的桥梁作用,介导气道分泌颗粒的胞内运动和黏蛋白的出胞释放。
基金supported by the National Natural Science Foundation of China(No.30701137)
文摘It is believed that amyloid-βpeptide（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-andγ-secretases are all located on the lipid raft,and the meeting of them is an indispensable step for Aβgeneration.Endocytosis can lead to clustering of APP,β-andγ-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 Ca2＋can lead to its release from membrane into cytoplasm.This process induces the release of actins and phosphatidylinositol 4,5-bisphosphate（PIP2）,which are important factors for endocytosis.Thus,the present review proposes that MARCKS may be implicated in Aβgeneration,by modulating free PIP 2 level and actin movement,causing endocytosis.
