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Effect of depletion of LRIG1 on CD8+ tumor infiltrating T cells [CITE-Seq]

ABSTRACT: To investigate the function of LRIG11 in regulating the differentiation of polyclonal CD8 tumor infiltrating T cells during the response to B16melanoma, we isolated CD8 T cells on day 18 post vaccine treatment and examined gene transcription at single cell level

ORGANISM(S): Mus musculus

PROVIDER: GSE245840 | GEO | 2024/01/02

REPOSITORIES: GEO

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Effect of depletion of LRIG1 on polyclonal CD8+ tumor infiltrating T cells and Effect of depletion of LRIG1 on OT1 CD8+ tumor-infiltrating T cells

Project description:To investigate the function of LRIG11 in regulating the differentiation of polyclonal CD8 tumor infiltrating T cells during the response to B16melanoma. And, To investigate the function of LRIG1 in regulating the activaiton of ovalbumin specific OT1 CD8+ T cells during the response to B16 tumor stably expresss ovalbumin as surrogate tumor antigen.

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LRIG1 engages ligand VISTA and impairs tumor-specific CD8+ T cell responses

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Expression data from FACS-sorted CD8+BTLA+ vs CD8+BTLA- Human Tumor-infiltrating Lymphocytes in Metastatic Melanoma

Project description:Adoptive T-cell Therapy (ACT) involves using tumor-infiltrating lymphocytes (TIL) isolated from metastatic melanoma and expanding them ex vivo prior to infusion into lympho-depleted patients. This is one of the most promising approaches to treat metastatic melanoma, with the rates of clinical response between 48-50% based on studies done at NCI, M.D. Anderson Cancer Center (Houston, TX), and Sheba Medical Center (Tel Aviv, Israel). In the Phase II ACT Trial at M.D. Anderson Cancer Center , our group has uncovered an association between positive clinical response and the amount of CD8+ tumor-infiltrating lymphocytes expressing B and T Lymphocyte Attenuator (BTLA), a reported inhibitory receptor on T-cells. We used microarrays to detail the differences in the global programme of gene expression between CD8+BTLA+ vs CD8+BTLA- TILs in order to understand the molecular basis of the clinical association. TILs were isolated by enzymatically digest the melanoma tumor fragments obtained from Stage IIIc/IV melanoma patients at M.D. Anderson Cancer Center. The TILs were expanded with high-dose IL-2 for two weeks prior to sorting by FACS (fluoresecence-activated cell sorter) for CD8+BTLA+ and CD8+BTLA- susbets. RNA was extracted from each sorted subsets and hybridized on Affymetrix microarrays

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Effect of depletion of LRIG1 on CD8+ tumor infiltrating T cells

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TIMP1 mediates astrocyte-dependent local immunosuppression in brain metastasis acting on infiltrating CD8+ T cells.

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