I use 24mm diameter transwell(0.4μm) to culture Caco-2 cells.
I want to detect expression of protein after cells exposed to cytokine.
there are three methods
first is directly put the lysis buffer into the transwell,but I am worried about part of protein will be lost because of permeablity of membrane.and the membrane maybe broken if I scrape too hard
second is use trypsin to digest cells,then collect them in a centrifuge tube and add the lysis buffer;
third is cut the membrane out from transwell then put it in a centrifuge tube and add the lysis buffer.That means the transwell will not be used again.
Which method is best? Or anyother method?