Multivesicular bodies: co-ordinated progression to maturity.

Multivesicular bodies: co-ordinated progression to maturity.
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DOI:
10.1016/j.ceb.2008.04.001
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发表时间:
2008-08
影响因子:
7.5
通讯作者:
Futter CE
Futter CE
中科院分区:
生物学2区
文献类型:
--
作者:
Woodman PG;Futter CE

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多泡内体/体(MVB)将内吞的蛋白质分选到不同的目的地。许多溶酶体定向的膜蛋白被分选到腔内囊泡上,而再循环蛋白保留在外周膜上,它们通过管状延伸从外周膜上被去除。MVB在成熟过程中移动到细胞中心,当所有回收蛋白质被去除时,与溶酶体融合。最近的进展已经确定了内体分选复合物所需的运输(ESCRT)依赖性和ESCRT独立的途径,在管腔内囊泡的形成和机制分类回收货物进入小管。细胞骨架马达,通过与这些机器的相互作用,并通过调节MVB运动,有助于协调事件,导致成熟的,融合能力的MVB。
Multivesicular endosomes/bodies (MVBs) sort endocytosed proteins to different destinations. Many lysosomally directed membrane proteins are sorted onto intralumenal vesicles, whilst recycling proteins remain on the perimeter membrane from where they are removed via tubular extensions. MVBs move to the cell centre during this maturation process and, when all recycling proteins have been removed, fuse with lysosomes. Recent advances have identified endosomal-sorting complex required for transport (ESCRT)-dependent and ESCRT-independent pathways in intralumenal vesicle formation and mechanisms for sorting recycling cargo into tubules. Cytoskeletal motors, through interactions with these machineries and by regulating MVB movement, help to co-ordinate events leading to a mature, fusion-competent MVB.
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