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Gene expression analysis of Wnt+ and Wnt- effector CD8 T cells

ABSTRACT: Wnt signal transduction during an immune response is involved in the establishment of functional CD8 T cell memory P14 ConductinLacZ CD8 T cells (CD45.2) were transferred in CD45.1+.2+ recipient mice. The day after, recipients were infected with 200pfu LCMV WE. At day 8 after infection, cells from spleen and lymph nodes were harvested, magnetically enriched for CD8 T cells, loaded with the beta-galactosidase substrate (FDG) and sorted as 7AAD-negative CD45.- negative, beta-galactosidase positive versus negative cells.

ORGANISM(S): Mus musculus

PROVIDER: GSE53358 | GEO | 2013/12/16

SECONDARY ACCESSION(S): PRJNA231840

REPOSITORIES: GEO

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Project description:Innate memory phenotype (IMP) CD4+ T cells are non-conventional Î±Î² T cells exhibiting features of innate immune cells, characterized as CD44high and CD62Llow in periphery. It is recently reported by our group that bone marrow chimeric mice lacking thymic MHCI expression develop predominantly IMP CD8+ T cells, while those lacking hematopoietic MHCI develop predominantly naÃ¯ve CD8+ T cells. Here we perform hirarchical clustering analysis and found that CD4+ T cells share similar property: chimeras lacking thymic MHCII gave rise to predominantly CD4+ T cells that resemble IMP CD4+ T cells observed in WT mice, and vice versa, chimeras lacking hematopoietic MHCII had a majority of naÃ¯ve-like CD4+ T cells resembling naÃ¯veCD4+ T cells seen in WT mice. We used microarrays to compare the global programme of gene expression to determine whether the hematopoietic MHCII selected CD4+ T cells are IMP, and whether the thymic MHCII selected CD4+ T cells are naÃ¯ve CD4+ T cells as observed in WT mice. Through hierarchical clustering and analysis of global gene differential expression, we determined that hematopoietic MHCII dependent IMP CD4+ T cells generated from WT bone marrow transplanted into irradiated MHCII-/- recipients, resemble IMP CD4+ T cells in WT mice, while naÃ¯ve CD4+ T cells generated from MHCII-/- bone marrow transplanted into irradiated WT recipients, resemble naÃ¯ve CD4+ T cells in WT mice. Cell Sorting was performed using a Cytopeia Influx Cell Sorter. Chimeric IMP (CD45.1+TCRÎ²+CD4+CD44highCD62Llow) CD4+ T cells were sorted from splenocytes of CD45.1+WTâCD45.2+MHCII-/- chimeras (WM IMP CD4), and chimeric naÃ¯ve (CD45.2+TCRÎ²+CD4+CD44lowCD62Lhigh) CD4+ T cells were sorted from splenocytes of CD45.2+MHCII-/- â CD45.1+WT chimeras (MW naÃ¯ve CD4) respectively, 8 weeks post transplantation. WT IMP (TCRÎ²+CD4+CD44highCD62Llow) and naÃ¯ve (TCRÎ²+CD4+CD44lowCD62Lhigh) CD4+ T cells were sorted from splenocytes of 8-week old WT mice.

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Gene expression analysis of Wnt+ and Wnt- effector CD8 T cells

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