Western blot problem
ad at physiol.ox.ac.uk
Thu Jul 12 04:55:52 EST 2001
I have been running westerns for eNOS, nNOS and iNOS successfully using
various rodent organ tissues. I use actin as a housekeeper.
In order to show reproducibility I recently re-ran the exact same lysates
again, along with some freshly made lysates. Strangely I found that the
actin signal was very much weaker in some (not all) of the original lysates,
as wells as in the fresh lysates.
I re-ran all these again, and while there is a pretty stong actin signal, it
is still weaker in those tissues which before showed a weak actin signal.
I am not sure what could have happened. The NOS signal in ALL the tissues
was fine - so it is not the lysates themselves but possibly the actin
specifically which has degraded.
Has anyone else had this problem? Does anyone know what could have happened?
I would be really grateful for any suggestions.
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