کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1173508 | 961678 | 2011 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Video rate bioluminescence imaging of secretory proteins in living cells: Localization, secretory frequency, and quantification Video rate bioluminescence imaging of secretory proteins in living cells: Localization, secretory frequency, and quantification](/preview/png/1173508.png)
We have developed a method of video rate bioluminescence imaging to investigate protein secretion from a single mammalian cell and analyzed the localization, secretory frequency, and quantification of secreted protein. By detecting the luminescence signals from the Gaussia luciferase (GLase) reaction using a high-speed electron-multiplying charge-coupled device (EM-CCD) camera, video rate imaging was performed with a time resolution within 500 ms/image over 30 min in living cells. As a model study, we applied the method to visualize the glucose-stimulated insulin secretion from clustered pancreatic MIN6 β cells using the fused protein of GLase with preproinsulin. High-quality video images clearly showed that the glucose-stimulated insulin secretion from the clustered MIN6 β cells oscillated within a period of a few minutes over 10 min. In addition, the glibenclamide-induced insulin secretion from the clustered MIN6 β cells was visualized, suggesting that bioluminescence video rate imaging is a useful method for validating drug action in living cells.
Journal: Analytical Biochemistry - Volume 415, Issue 2, 15 August 2011, Pages 182–189