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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Vesicle (biology and chemistry) ： ウィキペディア英語版 Vesicle (biology and chemistry) In cell biology, a vesicle is a small structure within a cell, consisting of fluid enclosed by a (bilayer ). Vesicles can form naturally, for example, during the processes of secretion (exocytosis), uptake (phagocytosis and endocytosis) and transport of materials within the cytoplasm. Alternatively, they may be prepared artificially, in which case they are called liposomes. If there is only one phospholipid bilayer, they are called ''unilamellar liposome'' vesicles; otherwise they are called ''multilamellar''. The membrane enclosing the vesicle is also a lamellar phase, similar to that of the plasma membrane, and vesicles can fuse with the plasma membrane to release their contents outside the cell. Vesicles can also fuse with other organelles within the cell. Vesicles perform a variety of functions. Because it is separated from the cytosol, the inside of the vesicle can be made to be different from the cytosolic environment. For this reason, vesicles are a basic tool used by the cell for organizing cellular substances. Vesicles are involved in metabolism, transport, buoyancy control, and enzyme storage. They can also act as chemical reaction chambers. The 2013 Nobel Prize in Physiology or Medicine was shared by James Rothman, Randy Schekman, and Thomas Südhof for their roles (building upon earlier research, some of it by their mentors) on the makeup and function of cell vesicles, especially in yeasts and in humans, including information on each vesicle's parts and how they are assembled. When cell vesicles, which help maintain a balance or equilibrium inside and outside of the blood vessels and cells (between the intravascular and extravascular spaces and the intracellular and extracellular spaces, respectively), malfunction, potentially serious and often fatal conditions are the result. The dysfunction is thought to contribute to Alzheimer's disease, diabetes, some hard-to-treat cases of epilepsy, some cancers and immunological disorders, and certain neurovascular conditions. These are likely either caused, influenced, or made worse, by the disorders of the cell vesicles.〔(2013 Nobel Prize in Physiology or Medicine ), press release 2013-10-07〕 ==Types of Vesicles== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Vesicle (biology and chemistry)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.