title: Innocuousness and intracellular distribution of PKH67: a fluorescent probe for cell proliferation assessment.
abstract: PKH dyes were initially developed by Horan et al. to provide appropriate probes for in vitro and in vivo cell tracking. It has been reported for many cell types that PKH bind irreversibly to the cell membrane without significantly affecting cell growth. Thus, these probes provide an opportunity for long-term cell monitoring and the identification of cells of interest among a heterogeneous cell population. An important feature is that upon cell division, the probe is partitioned equally between each daughter cell, making it possible to quantify tell fluorescence by flow cytometry. In this situation. the flow cytometric study of PKH67 characteristics shows that this probe does not affect the main cell-functions such as viability or proliferation. Moreover, the intracellular distribution of PKH67 is demonstrated by following its kinetics of internalization by confocal microscopy. These results present PKH67 as a probe suitable for dynamic analysis of cell proliferation as well as the study of intracellular localization and membrane recycling mechanisms.
authors.affiliation: Laboratoire de Dynamique Cellulaire, Ecole Pratique des Hautes Etudes, Université Joseph Fourier, La Tronche, France.
authors.forename: C
authors.initials: C
authors.lastname: Rousselle
authors.forename: M
authors.initials: M
authors.lastname: Barbier
authors.forename: V V
authors.initials: VV
authors.lastname: Comte
authors.forename: C
authors.initials: C
authors.lastname: Alcouffe
authors.forename: J
authors.initials: J
authors.lastname: Clement-Lacroix
authors.forename: G
authors.initials: G
authors.lastname: Chancel
authors.forename: X
authors.initials: X
authors.lastname: Ronot
mesh_terms: D000818:Animals; D016466:CHO Cells; D002452:Cell Count; D002455:Cell Division; D002460:Cell Line; D002470:Cell Survival; D006224:Cricetinae; D005456:Fluorescent Dyes / Q000378:metabolism*; D006367:HeLa Cells; D006801:Humans; D007424:Intracellular Fluid; D020014:K562 Cells; D051379:Mice; D009930:Organic Chemicals
chemical_list: D005456:Fluorescent Dyes; D009930:Organic Chemicals; C451241:PKH67