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Inhibiting intracellular CD28 in cancer cells enhances antitumor immunity and overcomes anti-PD-1 resistance via targeting PD-L1

ABSTRACT: Inhibiting intracellular CD28 in cancer cells enhances antitumor immunity and overcomes anti-PD-1 resistance via targeting PD-L1

PROVIDER: PRJNA972474 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24554813_1.fastq.gz	Fastqsanger.gz
	SRR24554813_2.fastq.gz	Fastqsanger.gz
	SRR24554814_1.fastq.gz	Fastqsanger.gz
	SRR24554814_2.fastq.gz	Fastqsanger.gz
	SRR24554815_1.fastq.gz	Fastqsanger.gz

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Inhibiting intracellular CD28 in cancer cells enhances antitumor immunity and overcomes anti- PD-1 resistance via targeting PD-L1

Project description:Inhibiting intracellular CD28 in cancer cells enhances antitumor immunity and overcomes anti- PD-1 resistance via targeting PD-L1

| PRJNA967696 | ENA

Inhibiting intracellular CD28 in cancer cells enhances antitumor immunity and overcomes anti-PD-1 resistance via targeting PD-L1

Project description:Inhibiting intracellular CD28 in cancer cells enhances antitumor immunity and overcomes anti-PD-1 resistance via targeting PD-L1

| PRJNA1117900 | ENA

Inhibiting intracellular CD28 in cancer cells enhances antitumor immunity and overcomes anti-PD-1 resistance via targeting PD-L1

Project description:In vivo genome-wide CRISPR screening unraveled the non-classical role of cancer cell Cd28 in tumor immune escape, and identified cancer cell Cd28 as a novel target in breast cancer immunotherapy by modulating tumor immunogenicity and anti-tumor CD8+ T cell responses.

2024-12-26 | GSE232503 | GEO

Inhibiting intracellular CD28 in cancer cells enhances antitumor immunity and overcomes anti- PD-1 resistance via targeting PD-L1

2024-12-26 | GSE231792 | GEO

Inhibiting intracellular CD28 in cancer cells enhances antitumor immunity and overcomes anti-PD-1 resistance via targeting PD-L1

Project description:To determine how deficiency of Cd28 influences 4T1 cells, we performed a transcriptional analysis

2024-12-26 | GSE268610 | GEO

Myeloid Niches Sustain Antitumor T Cells and License PD-1 Blockade via CD28 Costimulation

Project description:The local mechanisms regulating exhaustion of tumor-infiltrating lymphocytes (TILs) and responsiveness to PD-1 blockade remain partly elucidated. In human ovarian cancer we show that tumor-reactive intraepithelial (ie)CD8+ TILs engaged by antigen are polyfunctional and upregulate PD-1, which restrains their effectiveness. PD-1+ TILs exhibit a continuum of TCR-engaged/exhausted states with variable effector fitness related to CD28 costimulation, which they receive in intraepithelial niches involving myeloid antigen-presenting cells (mAPC). Following PD-1 blockade, activation of TILs requires CD28 costimulation mediated in situ by tumor mAPCs, which is locally enhanced by CTLA-4 blockade. CD40 ligand also amplifies TIL responses in situ, especially in tumors in which mAPCs are not activated. Thus, dysfunctional and exhausted TILs, in a state of TCR engagement but without proper CD28 costimulation by mAPCs in situ, are unlikely to fully benefit from PD-1 blockade.

2021-10-12 | GSE178245 | GEO

Myeloid Niches Sustain Antitumor T Cells and License PD-1 Blockade via CD28 Costimulation

Project description:Myeloid Niches Sustain Antitumor T Cells and License PD-1 Blockade via CD28 Costimulation

| PRJNA738136 | ENA

Single residue in CD28-costimulated CAR-T cells limits long-term persistence and antitumor durability

Project description:Chimeric antigen receptor–T (CAR-T) cell therapies can eliminate relapsed and refractory tumors, but the durability of antitumor activity requires in vivo persistence. Differential signaling through the CAR costimulatory domain can alter the T cell metabolism, memory differentiation, and influence long-term persistence. CAR-T cells costimulated with 4-1BB or ICOS persist in xenograft models but those constructed with CD28 exhibit rapid clearance. Here, we show that a single amino acid residue in CD28 drove T cell exhaustion and hindered the persistence of CD28-based CAR-T cells and changing this asparagine to phenylalanine (CD28-YMFM) promoted durable antitumor control. In addition, CD28-YMFM CAR-T cells exhibited reduced T cell differentiation and exhaustion as well as increased skewing toward Th17 cells. Reciprocal modification of ICOS-containing CAR-T cells abolished in vivo persistence and antitumor activity. This finding suggests modifications to the costimulatory domains of CAR-T cells can enable longer persistence and thereby improve antitumor response.

2020-02-11 | GSE145007 | GEO

Genome wide expression profiles (RNAseq) of human CD8+ T cells in resting, activated (CD3+CD28) and PD-1-stimulated cells (CD3+CD28+PD-L1-Fc) at diferent time points

Project description:Background: Binding of the programmed death-1 (PD-1) receptor to its ligands (PD-L1/2) transduces inhibitory signals that promote exhaustion of activated T cells. Blockade of the PD 1 pathway is widely used for cancer treatment, yet the inhibitory signals transduced by PD-1 in T cells remain elusive. Methods: Expression profiles of human CD8+ T cells in resting, activated (CD3+CD28) and PD-1-stimulated cells (CD3+CD28+PD-L1-Fc) conditions were evaluated by RNA-seq. Bioinformatic analyses were used to identify signaling pathways differentially regulated in PD 1-stimulated cells.

2019-05-29 | GSE122149 | GEO

PD-1 blockade-unresponsive human tumor-infiltrating CD8+ T cells are marked by loss of CD28 expression and rescued by IL-15

Project description:Blockade of programmed death-1 (PD-1) reinvigorates exhausted CD8+ T cells, resulting in tumor regression in cancer patients. Recently, reinvigoration of exhausted CD8+ T cells following PD-1 blockade was shown to be CD28-dependent in mouse models. Herein, we examined the role of CD28 in anti-PD-1-induced human T-cell reinvigoration using tumor-infiltrating CD8+ T cells (CD8+ TILs) obtained from non-small cell lung cancer patients. Single cell analysis demonstrated a distinct expression pattern of CD28 between mouse and human CD8+ TILs. Furthermore, we found that human CD28+CD8+, but not CD28–CD8+ TILs, responded to PD-1 blockade irrespective of B7/CD28 blockade, indicating that CD28 co-stimulation in human CD8+ TILs is dispensable for PD-1 blockade-induced reinvigoration, and loss of CD28 expression rather serve as a marker of anti-PD-1-unresponsive CD8+ TILs. Transcriptionally and phenotypically, PD-1 blockade-unresponsive human CD28–PD-1+CD8+ TILs exhibited characteristics of terminally exhausted CD8+ T cells with low TCF1 expression. Notably, CD28–PD-1+CD8+ TILs had preserved machinery to respond to IL-15, and IL-15 treatment enhanced proliferation of CD28–PD-1+CD8+ TILs as well as CD28+PD-1+CD8+ TILs. Taken together, we demonstrate loss of CD28 expression as a marker of PD-1 blockade-unresponsive human CD8+ TILs with TCF1– signature and provide mechanistic insights into combining IL-15 with anti-PD-1.

2020-05-01 | GSE145896 | GEO

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