Usefulness of PKHs for studying cell proliferation |
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| Institution: | 1. Institute of Computing, University of Campinas, Brazil;2. Center for Mathematics, Computation and Cognition, Federal University of ABC, Brazil;1. Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China;2. Ministry of Education, Key Laboratory of Public Health Safety (Fudan University), China;3. Zigong City Center for Disease Control and Prevention, Zigong City, Sichuan, China;4. Department of Infectious Diseases, Imperial College, London, UK;5. Shanghai integrated traditional Chinese and Western Medicine Hospital, Shanghai, China |
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| Abstract: | Classical methods for proliferative assessment (such as tritiated thymidine or bromodeoxyuridine (BrdUrd) incorporation) need sample fixation. As an alternative, we have evaluated the use of a dye dilution method using PKH26 to determine the rate and extent of proliferation in cell lines. Flow cytometric analysis associated with modelling software makes it possible to estimate the number of cells having undergone different numbers of cell divisions by sampling the cell population at varying times post-labelling. Two major questions were addressed in these studies, (i) Does PKH26 give a stable and reproducible labelling? (ii) Does labelling with PKH26 alter cellular proliferation characteristics? We conclude that the methods developed here provide a simpler, more complete means for assessment of cell proliferation in patients with hematological malignancies. |
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