ca++ flux quandry

From: KUKURUGA@medmail.med.umich.edu
Date: Wed Dec 17 1997 - 14:12:53 EST


Here's a good one (maybe) . . . 
Jurkat cells, loaded with indo, hit with ionomycin (1ug/ml).  The ratio inverts
showing good ca++ flux, yet after a minute or so, the ratio returns to 
baseline.  So, what does it mean?  Is the ionomycin concentration perhaps too
high, and therefore toxic, thus causing cell death?  What do you think?

Also . . . same cells, transfected with whatever, but co-transfected to be 
neomycin resistant . . . under above conditions (indo loaded, ionomycin
treated)the ratio moves in the unbound direction, exxentially backwards
from
expected.  Could this be due to the resistance, and a loading issue?
Any thoughts will be appreciated.

MAK.

---
Mark A. KuKuruga, Managing Director
University of Michigan Flow Cytometry
kukuruga@medmail.med.umich.edu



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