From: Albert Tai (acktai@exelixis.com)
Date: Fri Feb 07 2003 - 18:22:25 EST
Dr. Shapiro, I have used DRAQ5 in DNA staining in live cells and got reasonble profile. However the %CV went up to about 10 - 15% relative to 3 - 5% in the case of methanol fixation with PI. Could you recommend areas of optimization for DRAQ5 staining ? Any thoughts would be greatly appreciated. Thanks, Albert Tai Exelixis, Inc. South San Francisco. ----- Original Message ----- From: "Howard Shapiro" <hms@shapirolab.com> To: cyto-inbox Sent: Thursday, February 06, 2003 4:30 PM Subject: Is DRAQ5 Fluorescence Affected by Bromodeoxyuridine? > > DRAQ5 and Hoechst 33342 appear to the only dyes that can reliably produce > stoichiometric staining of DNA in live cells. Hoechst 33342 is, as most > people know, quenched by BrUdR (or BrdU, if you prefer). If DRAQ5 > fluorescence is unaffected by BrUdR, or even, perhaps, if it is enhanced by > BrUdR,not, the combination of the two dyes might be usable to detect BrUdR > incorporation in live cells, which would be of interest. Has anybody tried > this? > > -Howard >
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