Journal
BIO-PROTOCOL
Volume 7, Issue 24, Pages -Publisher
BIO-PROTOCOL
DOI: 10.21769/BioProtoc.2649
Keywords
T cells; Ki67; BrdU labelling; T cell proliferation; DNA labelling; Flow cytometry
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Funding
- National Institutes of Health [R01 AI093870]
- Medical Research Council [MC-PC-13055]
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This protocol was developed to increase the richness of information available from in vivo T cell proliferation studies. DNA labelling techniques such as BrdU incorporation allow precise control of label administration and withdrawal, so that the division history of a population can be tracked in detail over long timeframes (days-weeks). Ki67 is expressed in the nucleus of dividing cells, and is retained for a short time (3-4 days) after division (Gossel et al., 2017); therefore acting as a molecular clock to identify cells that have recently divided. Combining these two techniques allows the integration of current and historical proliferation information from individual cells within a population. This data can subsequently be used to probe population dynamics by fitting mathematical models of proliferation (Gossel et al., 2017).
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