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CD39 Identifies Tumor-Reactive CD8 T cells in Patients With Lung Cancer [FB]

ABSTRACT: We utilized cell surface expression of CD39 to demonstrate that this marker enriches for CD8+ T cells with features of exhaustion, proliferation and tumor reaxtivity.

ORGANISM(S): Homo sapiens

PROVIDER: GSE218259 | GEO | 2022/11/17

REPOSITORIES: GEO

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CD39 Identifies Tumor-Reactive CD8 T cells in Patients With Lung Cancer [VDJ]

Project description:We utilized cell surface expression of CD39 to demonstrate that this marker enriches for CD8+ T cells with features of exhaustion, proliferation and tumor reaxtivity.

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CD39 Identifies Tumor-Reactive CD8 T cells in Patients With Lung Cancer [scRNA]

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CD39 expression identifies terminally exhausted CD8+ T cells

Project description:Exhausted T cells express multiple co-inhibitory molecules that impair their function and limit immunity to chronic viral infection. Defining novel markers of exhaustion is important both for identifying and potentially reversing T cell exhaustion. Herein, we show that the ectonucleotidse CD39 is a marker of exhausted CD8+ T cells. CD8+ T cells specific for HCV or HIV express high levels of CD39, but those specific for EBV and CMV do not. CD39 expressed by CD8+ T cells in chronic infection is enzymatically active, co-expressed with PD-1, marks cells with a transcriptional signature of T cell exhaustion and correlates with viral load in HIV and HCV. In the mouse model of chronic Lymphocytic Choriomeningitis Virus infection, virus-specific CD8+ T cells contain a population of CD39high CD8+ T cells that is absent in functional memory cells elicited by acute infection. This CD39high CD8+ T cell population is enriched for cells with the phenotypic and functional profile of terminal exhaustion. These findings provide a new marker of T cell exhaustion, and implicate the purinergic pathway in the regulation of T cell exhaustion. CD8+ T cells from subjects with HCV infection were sorted and pelleted and re-suspended in TRIzol (Invitrogen). RNA extraction was performed using the RNAdvance Tissue Isolation kit (Agencourt). Concentrations of total RNA were determined with a Nanodrop spectrophotometer or Ribogreen RNA quantification kits (Molecular Probes/Invitrogen). RNA purity was determined by Bioanalyzer 2100 traces (Agilent Technologies). Total RNA was amplified with the WT-Ovation Pico RNA Amplification system (NuGEN) according to the manufacturer's instructions. After fragmentation and biotinylation, cDNA was hybridized to HG-U133A 2.0 microarrays (Affymetrix).

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RNA-Seq of FACS-sorted, KIR-CD39-,KIR+CD39- and KIR+CD39+, Uterine NK cells (uNK cells) from human decidual samples

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CD39+ CD4+ conventional T cells with exhaustion traits and cytotoxic potential infiltrate tumors and expand upon CTLA4 blockade

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