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Gene expression profiling of CAR-T cells pre-and post-adoptive transfer

ABSTRACT: Chimeric Antigen Receptors (CARs) are synthetic immune receptors introduced in cancer patients' autologous T Cells for cellular immunotherapy. The purpose of this study is to characterize the changes in gene expression induced by the presence of a CAR in human primary T cells (comparison A or B versus C); and the changes that take place for each group after transfer into a xenograft model of pancreatic cancer (comparison Post versus Pre).

OTHER RELATED OMICS DATASETS IN: PXD007085PXD007086

ORGANISM(S): Homo sapiens

PROVIDER: GSE102823 | GEO | 2019/02/11

REPOSITORIES: GEO

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RNA-seq analysis of CAR-NKAE cells and CD45RA- CAR-T cells

Project description:CAR-T cell therapy against MM currently shows promising results, but usually with serious toxicities. CAR-NK cells may exert less toxicity when redirected against resistant myeloma cells. CARs can be designed through the use of receptors, such as NKG2D, which recognizes a wide range of ligands to provide broad target specificity. Here, we test this approach by analyzing the anti-tumor activity of activated and expanded NK cells (NKAE) and CD45RA- T cells from MM patients that were engineered to express an NKG2D-based CAR. NKAE cells were cultured with irradiated Clone9.mbIL21 cells. Then, cells were transduced with an NKG2D-4-1BB-CD3z-CAR. CAR-NKAE cells exhibited no evidence of genetic abnormalities. Although memory T cells were more stably transduced, CAR-NKAE cells exhibited greater in vitro cytotoxicity against MM cells, while showing minimal activity against healthy cells. In vivo, CAR-NKAE cells mediated highly efficient abrogation of MM growth, and two of the treated mice remained disease-free. Overall, these results demonstrate that it is feasible to modify autologous NKAE cells from MM patients to safely express a NKG2D-CAR. Additionally, autologous CAR-NKAE cells display enhanced anti-myeloma activity demonstrating that they could be an effective strategy against MM supporting the development of NKG2D-CAR NK cell therapy for MM.

2021-08-16 | GSE179408 | GEO

An immunoproteomic approach to characterize the CAR interactome and signalosome

Project description:Adoptive transfer of chimeric antigen receptor (CAR)-T cells is expected to become the first line of treatment for multiple malignancies, following the enormous success of anti-CD19 therapies. However, their mechanism of action is not fully understood, and clear guidelines for the design of safe and efficient receptors are missing. We hereby describe a systematic analysis of the CAR “interactome” in human primary T cells, which allowed us to identify molecular traits that influence CAR-T cell efficacy. Interactome analysis was based on immunoprecipitation of CARs followed by protein identification by mass spectrometry.

2019-11-07 | PXD007085 | Pride

Expression data from chimeric antigen receptor transduced (CAR) human CD4+ T cells during expansion

Project description:In this data set we include expression data from human CD4+ T cells isolated on day 0, 6, 11 and 24 follow anti-CD3/anti-CD28 magnetic bead stimulation and chimeric antigen receptor transduction. 30 samples were submitted. Samples represented three biological replicates of normal donors transduced with various CARs. CARs used were a cMet 28z specific CAR comprised of the IgG4 hinge, CD28 transmembrane and CD28 and CD3zeta intracellular domains. A CD19 CD28 CAR was specific to CD19, and was comprised of a CD8a hinge, CD28 transmembrane and CD28 and CD3zeta intracellular domain. A third CAR, the CD19 BBz, was used that was specific to CD19 was comprised of a CD8a hinge, CD8a transmembrane and 4-1BB and CD3zeta intracellular domains. Expression data was analyzied on day 0, 6, 11 and 24.

2015-01-14 | E-GEOD-64914 | biostudies-arrayexpress

Comparation of two anti-EphA2 CAR-T constructs

Project description:We constructed two different third generation anti-EphA2 chimeric antigen receptors(CARs) for glioblastoma treatment. They have the same transmembrane and intracellular domains. The only different is the extracellular domain. T cells transduced with these two different CARs exhibited different anti-tumor capacities and cytokine secretion. So RNA-seq was used to anaylze the different gene expression archetecture of these two CAR-T cells.

2021-08-24 | GSE163833 | GEO

Expression data from mouse CD19-targeted CAR (chimeric antigen receptor) T cells after antigen stimulation [RNA-seq]

Project description:Second-generation CD19-targeted chimeric antigen receptors (CAR) have an antigen-binding domain fused to transmembrane, co-stimulatory, and CD3ζ domains. The two CARs with regulatory approval include a CD28 or 4-1BB co-stimulatory domain. While both CARs achieve similar clinical outcomes, biologic differences between the two endodomains have become apparent but not completely understood. The objective is to evaluate gene expression in different mouse CD19-targeted CAR T cells, including m19z, m1928z and m19-humBBz.

2018-07-31 | GSE112566 | GEO

Expression data from mouse CD19-targeted CAR (chimeric antigen receptor) T cells after antigen stimulation [expression array]

2018-07-31 | GSE111641 | GEO

Extracellular Domains of CAR Reprogram T Cell Metabolism Without Antigen Stimulation

Project description:Phosphopeptides of CARs in 14g2a-based anti-GD2, Leu16 anti-CD20, rituximab anti-CD20, and RFR-LCDR anti-CD20 CAR-T cells without antigen stimulation

2023-12-11 | MSV000093637 | MassIVE

Pooled screening for CAR function in glioblastoma

Project description:Human primary CD3+ T cells expressing IL13Ra2-targeted chimeric antigen receptors (CARs) that had been identified through high throughput pooled screening were rechallenged with an IL13Ra2+ human glioblastoma cell line , then stained with CITESEQ antibodies indicative of T cell memory and exhaustion state and prepared for single cell sequencing in order to determine their phenotypic responses to chronic tumor challenge relative to that of a clinical standard CAR.

2024-04-19 | GSE259352 | GEO

FIRST PHASE I TRIALS OF SLEEPING BEAUTY-MODIFIED CD19-SPECIFIC T CELLS

Project description:Background: T cells expressing antigen-specific chimeric antigen receptors (CARs) improve outcomes for CD19-expressing B-cell malignancies. We provide the first human application of T cells genetically modified using the Sleeping Beauty (SB) transposon/transposase system to express a CD19-specific CAR. Methods: T cells were genetically modified using DNA plasmids from the SB platform to stably express a second-generation CD19-specific CAR and selectively propagated ex vivo with activating and propagating cells (AaPC) and cytokines. Twenty-six patients with advanced NHL and ALL safely underwent hematopoietic stem-cell transplantation (HSCT) and infusion of CAR T cells as adjuvant therapy in the autologous (n=7) or allogeneic settings (n=19). Results: SB-mediated genetic transposition and stimulation resulted in 2,200-2,500-fold ex vivo genetically modified T-cell expansion, with 84% CAR expression, and without integration hotspots. The 30-month progression-free and overall survivals were 83% and 100%, respectively, following autologous HSCT, and the respective 12-month rates after allogeneic HSCT were 53% and 63%. No acute or late toxicities and no exacerbation of graft-versus-host-disease were observed. Despite a low antigen burden and unsupportive recipient cytokine environment, CAR T cells persisted for an average of 201 days for autologous and 51 days for allogeneic recipients. Conclusions: CD19-specific CAR T cells generated with SB and AaPC platforms were safe, and may provide additional cancer control as planned infusions after HSCT, supporting further clinical development of this non-viral gene therapy approach.

2016-06-08 | GSE83076 | GEO

CAR T cell trogocytosis and cooperative killing regulate tumour antigen escape

Project description:Chimeric antigen receptors (CARs) are synthetic receptors for antigen that reprogram T cell specificity, function and persistence. Patient-derived CAR T cells have demonstrated remarkable efficacy against a range of B-cell malignancies, and early trial results suggest activity in multiple myeloma. Despite high complete response rates, relapses occur in a large fraction of patients, some of which are antigen-negative and others antigen-low. Unlike mechanisms resulting in complete and permanent antigen loss, those leading to antigen-low tumour escape remain obscure. In murine leukaemia models, we show that CARs provoke reversible antigen loss through trogocytosis, an active process whereby target antigen is transferred to T cells, thereby decreasing target density on tumour cells and abating T cell activity by promoting fratricide killing and exhaustion. These mechanisms affect both CD28 and 4-1BB-based CARs, albeit differentially, depending on antigen density. They can be offset by cooperative killing and combinatorial targeting.

2019-03-27 | GSE126753 | GEO

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