Single-cell analyses of memory and memory-phenotype CD4 T cells
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA608941 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR11187300.fastq.gz | Fastqsanger.gz | |||
| SRR11187301.fastq.gz | Fastqsanger.gz | |||
| SRR11187302.fastq.gz | Fastqsanger.gz | |||
| SRR11187303.fastq.gz | Fastqsanger.gz | |||
| SRR11187296.fastq.gz | Fastqsanger.gz |
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Project description:Innate memory phenotype (IMP) CD4+ T cells are non-conventional αβ 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 naïve 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 naïve-like CD4+ T cells resembling naïveCD4+ 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 naïve 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 naïve CD4+ T cells generated from MHCII-/- bone marrow transplanted into irradiated WT recipients, resemble naïve CD4+ T cells in WT mice. Cell Sorting was performed using a Cytopeia Influx Cell Sorter. Chimeric IMP (CD45.1+TCRβ+CD4+CD44highCD62Llow) CD4+ T cells were sorted from splenocytes of CD45.1+WTâCD45.2+MHCII-/- chimeras (WM IMP CD4), and chimeric naïve (CD45.2+TCRβ+CD4+CD44lowCD62Lhigh) CD4+ T cells were sorted from splenocytes of CD45.2+MHCII-/- â CD45.1+WT chimeras (MW naïve CD4) respectively, 8 weeks post transplantation. WT IMP (TCRβ+CD4+CD44highCD62Llow) and naïve (TCRβ+CD4+CD44lowCD62Lhigh) CD4+ T cells were sorted from splenocytes of 8-week old WT mice.
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Project description:Introduction: Tobacco smoking generates airway inflammation in chronic obstructive pulmonary disease (COPD), and its involvement in the development of lung cancer is still among the leading causes of early death. Therefore, we aimed to have a better understanding of the disbalance in immunoregulation in chronic inflammatory conditions in smoker subjects with stable COPD (stCOPD), exacerbating COPD (exCOPD), or non-small cell lung cancer (NSCLC). Methods: Smoker controls without chronic illness were recruited as controls. Through extensive mapping of single cells, surface receptor quantification was achieved by single-cell mass cytometry (CyTOF) with 29 antibodies. The CyTOF characterized 14 main immune subsets such as CD4+, CD8+, CD4+/CD8+, CD4 −/CD8−, and g/d T cells and other subsets such as CD4+ or CD8+ NKT cells, NK cells, B cells, plasmablasts, monocytes, CD11cdim, mDCs, and pDCs. The CD4+ central memory (CM) T cells (CD4+/CD45RA−/CD45RO+/CD197+) and CD4+ effector memory (EM) T cells (CD4+/CD45RA−/CD45RO+/CD197−) were FACSsorted for RNA-Seq analysis. Plasma samples were assayed by Luminex MAGPIX® for the quantitative measurement of 17 soluble immuno-oncology mediators (BTLA, CD28, CD80, CD27, CD40, CD86, CTLA-4, GITR, GITRL, HVEM, ICOS, LAG-3, PD-1, PD-L1, PD-L2, TIM-3, TLR-2) in the four studied groups. Results: Our focus was on T-cell-dependent differences in COPD and NSCLC, where peripheral CD4+ central memory and CD4+ effector memory cells showed a significant reduction in exCOPD and CD4+ CM showed elevation in NSCLC. The transcriptome analysis delineated a perfect correlation of differentially expressed genes between exacerbating COPD and NSCLCderived peripheral CD4+ CM or CD4+ EM cells. The measurement of 17 immuno-oncology soluble mediators revealed a disease-associated phenotype in the peripheral blood of stCOPD, exCOPD, and NSCLC patients. Discussion: The applied single-cell mass cytometry, the whole transcriptome profiling of peripheral CD4+ memory cells, and the quantification of 17 plasma mediators provided complex data that may contribute to the understanding of the disbalance in immune homeostasis generated or sustained by tobacco smoking in COPD and NSCLC.
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Project description:Innate memory phenotype (IMP) CD4+ T cells are non-conventional αβ 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 naïve 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 naïve-like CD4+ T cells resembling naïveCD4+ 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 naïve 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 naïve CD4+ T cells generated from MHCII-/- bone marrow transplanted into irradiated WT recipients, resemble naïve CD4+ T cells in WT mice.
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