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DyeCycle violet used for side population detection is a substrate of P‐glycoprotein

DyeCycle violet used for side population detection is a substrate of P‐glycoprotein Cancer stem cells (CSC) are increasingly recognized as key target cells for cancer therapy because they are both tumorigenic and chemoresistant and, therefore, can give rise to recurrent disease. Side population (SP) sorting using an ultraviolet (UV) laser is an established method to isolate CSC based on ABC drug transporter‐dependent (e.g., ABCG2) Hoechst 33342 efflux. We here show that Vybrant® DyeCycle™ Violet (DCV), a DNA‐binding fluorophor allowing SP sorting using a non‐UV laser (such as violet laser), is transported via P‐glycoprotein (PgP). Because PgP might be particularly abundant in multidrug‐resistant cancer cells rather than bona fide CSC, investigators using DCV should be aware that this strategy might also detect PgP‐expressing non‐CSC. © 2012 International Society for Advancement of Cytometry http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Cytometry Part A Wiley

DyeCycle violet used for side population detection is a substrate of P‐glycoprotein

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References (31)

Publisher
Wiley
Copyright
Copyright © 2012 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1552-4922
eISSN
1552-4930
DOI
10.1002/cyto.a.22038
pmid
22407964
Publisher site
See Article on Publisher Site

Abstract

Cancer stem cells (CSC) are increasingly recognized as key target cells for cancer therapy because they are both tumorigenic and chemoresistant and, therefore, can give rise to recurrent disease. Side population (SP) sorting using an ultraviolet (UV) laser is an established method to isolate CSC based on ABC drug transporter‐dependent (e.g., ABCG2) Hoechst 33342 efflux. We here show that Vybrant® DyeCycle™ Violet (DCV), a DNA‐binding fluorophor allowing SP sorting using a non‐UV laser (such as violet laser), is transported via P‐glycoprotein (PgP). Because PgP might be particularly abundant in multidrug‐resistant cancer cells rather than bona fide CSC, investigators using DCV should be aware that this strategy might also detect PgP‐expressing non‐CSC. © 2012 International Society for Advancement of Cytometry

Journal

Cytometry Part AWiley

Published: Jun 1, 2012

Keywords: ; ; ; ;

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