title: Properties of murine (CD8+)CD27- T cells.
abstract: In humans, loss of CD27 expression is associated with the stable acquisition of effector functions by CD8+ T cells. We found that murine (CD8+)CD27- T cells were confined to the primed CD62L(dull/-)CD44(bright)CCR7- T cell population. (CD8+)CD27- T cells were absent from lymph nodes but could be found in blood, spleen and in non-lymphoid organs such as lung and liver. Late after primary influenza virus infection, low percentages of antigen-specific CD27- cells emerged in the lung and spleen. After recovery from secondary influenza virus infection, high percentages of influenza-specific CD27- T cells were found in the lung and the loss of CD27 on lung CD8+ T cells coincided with high granzyme B expression. After murine cytomegalovirus infection, loss of CD27 expression on virus-specific CD8+ T cell populations was sustained and especially marked in liver and lung. We suggest that in mice, CD27 is lost from CD8+ T cells only after repetitive antigenic stimulation. Moreover, the high expression of both granzyme B and perforin in the CD27- T cells suggests that the lack of CD27 on murine CD8+ T cells can be used to identify memory T cells with expression of cytotoxic effector molecules.
authors.affiliation: Department of Experimental Immunology, Academic Medical Center, Amsterdam, The Netherlands. p.a.baars@amc.uva.nl
authors.forename: Paul A
authors.initials: PA
authors.lastname: Baars
authors.forename: Sophie
authors.initials: S
authors.lastname: Sierro
authors.forename: Ramon
authors.initials: R
authors.lastname: Arens
authors.forename: Kiki
authors.initials: K
authors.lastname: Tesselaar
authors.forename: Berend
authors.initials: B
authors.lastname: Hooibrink
authors.forename: Paul
authors.initials: P
authors.lastname: Klenerman
authors.forename: René A W
authors.initials: RA
authors.lastname: van Lier
mesh_terms: D000375:Aging / Q000097:blood / Q000276:immunology; D000818:Animals; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology* / Q000378:metabolism; D003587:Cytomegalovirus; D003586:Cytomegalovirus Infections / Q000276:immunology; D053804:Granzymes; D007156:Immunologic Memory; D008562:Membrane Glycoproteins / Q000378:metabolism; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D009976:Orthomyxoviridae Infections / Q000276:immunology; D054353:Perforin; D052899:Pore Forming Cytotoxic Proteins; D012697:Serine Endopeptidases / Q000378:metabolism; D016176:T-Lymphocyte Subsets / Q000276:immunology* / Q000378:metabolism; D018127:Tumor Necrosis Factor Receptor Superfamily, Member 7 / Q000378:metabolism*
chemical_list: D008562:Membrane Glycoproteins; D052899:Pore Forming Cytotoxic Proteins; D018127:Tumor Necrosis Factor Receptor Superfamily, Member 7; D054353:Perforin; D053804:Granzymes; C509214:Gzmb protein, mouse; D012697:Serine Endopeptidases