3 replies to this topic

[topsi]

Hello,
I need to do ELISA on mice colon and brain samoles and my protocol asks for homogenization in PBS. My question is, do you think those homogenates will be appropriate for TGF beta WB??
Also, for WB, what would you recommend: tissue homogenization by ultrasonic cell disrupter (on ice) or mortar and pestle grinding in liquid nitrogen?
Thank you!

[Inmost sun]

you should at least separate cytosolic from microsomal fraction

grinding in liquid nitrogene is appropriate for colonic tissue as exocrine proteases may cause special problems to cellular proteins

[topsi]

Thanks, I will use the grinding methotd then.
As for the first reply, what exacrliy do you mean by that..?

[Inmost sun]

differential centrifugation