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U937s


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#1 OKSO

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Posted 04 March 2010 - 03:32 AM

Hi all,

I wonder if anyone can tell me what the best conditions to differentiate U937s are?

Looking at a few papers the concentration ranges from 10nM to 160nM PMA...
Incubation periods range from 12h to 48 hours - has anyone stimulated for 72h?

Also what is a good starting point for cell density - some people use 1xE5/ml others 7xE5/ml

Thanks so much in advance!! :(

#2 SuMi

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Posted 04 March 2010 - 06:09 AM

I use 50 ng/ml PMA. I seed the U-937 cells at 1e6 cells/ml (3e6 per well of 6-well plate) and add the PMA for 24 hours. I then remove the medium and add fresh medium without PMA and let the cells culture for a further 48 hours (i.e. 72 hours total). Some people don't remove the PMA but I prefer to not have my cells over-stimulated.

#3 OKSO

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Posted 05 March 2010 - 01:36 AM

Thanks for the information SuMi! Cheers



I use 50 ng/ml PMA. I seed the U-937 cells at 1e6 cells/ml (3e6 per well of 6-well plate) and add the PMA for 24 hours. I then remove the medium and add fresh medium without PMA and let the cells culture for a further 48 hours (i.e. 72 hours total). Some people don't remove the PMA but I prefer to not have my cells over-stimulated.






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