BrDU proliferation assay

arveiler benoit.arveiler at
Thu Mar 2 09:14:09 EST 1995

In article <1995Feb23.173459.7706 at>,
chris at wrote:

> Has anyone had experience with the BrDU labelling assay
> for cell proliferation?  I have attempted to use it in 
> a manner analagous to the continuous labelling of cells
> with tritiated thymidine.  This a simple method giving
> much information of cell cycle time etc.  However, 
> rather than getting a simple increase in labelling over
> time with an eventual plateau when all cells are 
> labelled, I obtained a sine curve with two peaks, the 
> second less than the first.  I would be glad of any 
> explanations (or even half convincing fictions!).
> Thanks in advance,
> Chris Bradley

BrdU may be toxic for some cells; thus in the first time you kill the
sensible one, and you observe a decrease of signal, then you have an
increasing incorporation in a fewer number of cell (smaller peak).
To get a fait idea about the sensibility of your cells just number them
during the BrdU treatment using the blue trypan to check viability

Avoid benveniste-like sine curves in the future!

and good luck...

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