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Predicting CD62L expression during the CD8+ T cell response in vivo
Journal article   Open access   Peer reviewed

Predicting CD62L expression during the CD8+ T cell response in vivo

Timothy E Schlub, Vladimir P Badovinac, Jaime T Sabel, John T Harty and Miles P Davenport
Immunology and cell biology, Vol.88(2), pp.157-164
02/2010
DOI: 10.1038/icb.2009.80
PMCID: PMC2824781
PMID: 19859082
url
http://doi.org/10.1038/icb.2009.80View
Open Access

Abstract

Acute infection leads to CD8+ T cell activation, division, and differentiation. Following clearance of infection, cells revert to two distinct subsets of memory, central (T CM ) and effector (T EM ) memory. Adoptive transfer of naïve T cell receptor transgenic (TCR-tg) T cells has been used to study the differentiation of these memory subsets, which are often discriminated by expression of CD62L. Naïve CD8+ T cells are CD62L high , and CD62L expression is lost during the ‘effector’ phase. Adoptive transfer studies show that higher transfer frequencies result in diminished T cell expansion and a higher proportion CD62L high . This suggests a relationship between CD62L expression and cell division, where division leads to conversion from CD62L high to CD62L low phenotype. To address this hypothesis we adoptively transferred graded numbers of OT-1 TCR-tg T cells from naïve donors and tracked the kinetics and phenotype of the immune response following infection. We developed a simple mathematical model of division-linked CD62L differentiation which we compared to the experimental data. Our results show that division-linked differentiation predicts the differences in proportion of cells CD62L high observed between responses of different adoptive transfer number, and within individual mice. We calculate that approximately 20% of CD62L high cells convert to CD62L low during each division.
Cell Differentiation Cellular proliferation Mathematical model CD8 T cells

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