Home > Community > Can I fix cells with PFA & NH4Cl at 37 degrees instead of room...
Upvote

26

Downvote
+ Immunostaining
Posted by
Nick

Can I fix cells with PFA & NH4Cl at 37 degrees instead of room...

Claire J. Vannette  Follow

Yes, you can fix at 37C with PFA. Fix for 5-20 mins (10 min would be a good average).
Good luck!

More

Upvote

VOTE

Downvote
Brian Chilando  Follow

I wouldn't like to have PFA in a well next to live cells in an incubator.... It might be paranoia but I worry about it affecting the quality of the other cells in the experiment. When I've had similar experiments previously I've simply moved the coverslips into a separate 24 well plate at each time-point and processed these cells as normal.

More

Upvote

VOTE

Downvote
Dean Moncaster  Follow

Thank you! The only thing I worry about it that the cell dynamics might change during this time if I increase the temperature. I assume by adding ice cold PFA this will reduce cell processes to give me a rough idea of cell dynamics at my given time points?

More

Upvote

VOTE

Downvote
Andre Jackson  Follow

I do that too. Just shorten the time as the chemical act faster at elevated temperature. You can use cold PFA (i.e., just removed from the fridge).

More

Upvote

VOTE

Downvote
David Min  Follow

Hi Philip - yes, I would usually do that too, but I'm using a special 96-well imaging plate so I'm stuck using the same plate for fixing wells at all time points! Thank you for the advice though.

More

Upvote

VOTE

Downvote
David  Follow

I thought that something like that might be the case as I was writing my answer. Good luck! 

More

Upvote

VOTE

Downvote
Brandon Lopez  Follow

in my experience, 37 D for 10 min is optimal for mitochondrial study, as mitochondrial is sensitive to temperature, RT fixation will give quit different pattern of mitochondrial net in cells.

More

Upvote

VOTE

Downvote
Cade Ellis  Follow

Hello
We usually fixed tissues at 37 C for 10 mins
Good Luck

More

Upvote

VOTE

Downvote