[求救] phalloidin staining
請問有關phalloidin的螢光染色實驗~
我想觀察F-actin的polymerization
使用Acti-stain 488的phalloidin 細胞為MDA-MB-231
製作sample過程如下:
3.7%formaldehyde fix 10 min
warm PBS wash
0.5% triton 5min
PBS wash
100 nM phalloidin 30min
PBS wash X3
100 nM DAPI 1min
wash
seal
但是在螢光顯微鏡下觀察
細胞形狀都爛爛的 很多毛邊 甚至呈萎縮狀
沒辦法看到一束一束的F-actin 而是整顆細胞都綠色的 而且細胞內感覺染到很多顆粒
請問有什麼方法可以改善細胞形狀的問題?
整顆細胞的綠色是可能為non-specific binding嗎?
(我已試過phalloidin內加1% BSA,或染之前先以1% BSA bloking 30min )
感激不盡!!
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