Detection of asymmetric distribution of phospholipids by fluorescence resonance energy transfer

详细信息	查看全文 | 推荐本文 |

• 作者：Yoko Nishimura ; Satoshi Tadokoro ; Masahiko Tanaka ; Naohide Hirashima ; ^{hirashim@phar.nagoya-cu.ac.jp}
• 关键词：Lipid asymmetry ; Flip-flop ; Fluorescence resonance energy transfer
• 刊名：Biochemical and Biophysical Research Communications
• 出版年：2012
• 期刊代码：159_0006291x
• 类别：bio
• 出版时间：20 April, 2012
• 卷：420
• 期：4
• 页码：926-930
• 文件大小：1138 K

摘要

It is well established that the plasma membrane exhibits an asymmetric distribution of lipids between the inner and outer leaflets of the lipid bilayer. Recent studies suggest that the asymmetric distribution changes locally and temporarily, accompanied by cellular events. However, available methods to detect lipid asymmetry lack spatio-temporal resolution. As a technique of potential use for real-time imaging of lipid asymmetry, we a novel method that utilizes fluorescence resonance energy transfer (FRET) between NBD-labeled phospholipids (donor) and extracellular rhodamine (acceptor). When cell apoptosis was induced by staurosporine, the fluorescence intensity of NBD-labeled phosphatidylserine decreased owing to FRET from NBD to rhodamine. This method provides a simple way to detect lipid asymmetry and may be useful for observing dynamic changes in asymmetric distribution of lipids.