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EGFR-IL12-CART Cells for Patients With Metastatic Colorectal Cancer

ABSTRACT: This is a clinical study to observe the maximum tolerated dose (MTD) and the safety and feasibility of chimeric antigen receptor EGFR (EGFR -IL12 -CART) cells in metastatic patients with colorectal cancer.

DISEASE(S): Metastatic Colorectal Cancer,Colorectal Neoplasms

PROVIDER: 2274283 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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EGFR CART Cells for Patients With Metastatic Colorectal Cancer

Project description:This is a clinical study to observe the maximum tolerated dose (MTD) and the safety and feasibility of chimeric antigen receptor EGFR (EGFR CART) cells in metastatic patients with colorectal cancer.

| 2244323 | ecrin-mdr-crc

Mutations and RNA-binding proteins controlling CD19 splicing and CART-19 therapy resistance: PTBP1 iCLIP2 in NALM-6 cells

Project description:We developed a massively parallel reporter assay to determine the splicing effects of all mutations in the region comprising CD19 exons 1-3. Despite the great success of CART-19 (chimeric antigen receptor-armed autologous T-cells) immunotherapy to treat B-cell acute lymphoblastic leukaemia (B-ALL), many patients relapse due to loss of the targeted CD19 epitope. Since epitope loss can be caused by CD19 exon 2 mis-splicing, we set out to learn the regulatory code that controls CD19 alternative splicing.

2022-06-05 | GSE182893 | GEO

Mutations and RNA-binding proteins controlling CD19 splicing and CART-19 therapy resistance: Minigene library RNA-seq

2022-06-05 | GSE182892 | GEO

Mutations and RNA-binding proteins controlling CD19 splicing and CART-19 therapy resistance: Minigene library DNA-seq

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GPR162 is a beta cell CART receptor [CART_KD]

Project description:Cocaine and amphetamine-regulated transcript (CART) is expressed in pancreatic islet cells and neuronal elements. We have previously established insulinotropic actions of CART in human and rodent islets. The receptor for CART in the pancreatic beta cells is unidentified. We used RNA sequencing of Cartpt knock down (KD) INS-1 832/13 cells and identified GPR162 as the most Cartpt-regulated receptor. We therefore tested if GPR162 mediates the effects of CART in beta cells. Binding of CART to GPR162 was established using proximity ligation assay, radioactive binding and co-immunoprecipitation, and KD of Gpr162 mRNA caused reduced binding. Gpr162 KD cells had blunted CARTp-induced exocytosis, and reduced CARTp-induced insulin secretion. Furthermore, we identified a hitherto undescribed GPR162-dependent role of CART as a regulator of cytoskeletal arrangement. Thus, our findings provide mechanistic insight into the effect of CART on insulin secretion and show that GPR162 is the CART receptor in beta cells.

2023-10-20 | GSE245796 | GEO

GPR162 is a beta cell CART receptor [INS1_GPR162]

2023-10-20 | GSE245691 | GEO

GD2-CART cells and iPSC-derived GD2-CART cells (scRNA-Seq)

Project description:We showed that iPSC-derived GD2-CART therapy for SCLC was more effective than peripheral blood-derived GD2-CART. Here, we investigated the molecular difference between iPSC-derived GD2-CARTs and peripheral blood-derived GD2-CARTs.

2023-10-25 | GSE245955 | GEO

Dasatinib enhances anti-tumor efficacy of chimeric antigen receptor T cells by inhibiting cell differentiation and exhaustion

Project description:CD19-targeted Chimeric antigen receptor T cells (CART) cells have shown remarkable promise in various B cell malignancies. Sustained tonic signaling and antigen exposure drives CART cell differentiation and exhaustion, which limits the therapeutic potency and persistence of CART cells and is a major cause of CD19-expressing leukemia relapse after CD19-targeted CART cells treatment in ALL. Here, we systematically screened FDA approved tyrosine kinase inhibitors, and identified dasatinib as the best candidate to prevent or reverse both CD28/CART and 4-1BB/CART cells from differentiation and exhaustion during ex vivo expansion, which enhanced the therapeutic efficacy and in vivo persistence. Using RNA-seq, we identified the differentially expressed genes between dasatinib treated group and Nalm6 stimulated group, and found that memory-associated transcription factors TCF7 and naive/memory-associated cell surface marker CCR7 were upregulated, whereas exhaustion-related regulators (NR4A1, BATF3, ATF4 and FOS) and inhibitory receptors (PD1, LAG3) were down-regulated in dasatinib treated CAR T cells. Moreover, T cell activation associated signaling pathways (T cell receptor, Jak-STAT, MAPK and PI3K-Akt) which were upregulated in Nalm6 stimulated CART cells, showed fundamental downregulation in dasatinib treated CART cells. These findings imply that dasatinib played important roles in CART cell differentiation and exhaustion by inhibition of T cell activation pathways.

2021-06-03 | GSE151774 | GEO

Chimeric EGFR ChIP-seq of an MCF-10A clone expressing chimeric EGFR and Erbb2 receptors

Project description:Synthetic activation of chimeric EGFR-Erbb2 receptors causes nuclear translocation of the heterodimers at long time scales. To identify genomic loci bound by nuclear EGFR-Erbb2, chromatin from an MCF10A-5E clone coexpressing chimeric EGFR and Erbb2 was prepared with or without synthetic activation and immunoprecipitated for chimeric EGFR by its GluGlu epitope tag.

2023-03-22 | GSE216242 | GEO

mRNA profiling on CD19-directed chimeric antigen receptor T (CART19) cells with and without platelet-poor plasma from untreated chronic lymphocytic leukemia (CLL) patients (CLL-derived extracellular vesicles)

Project description:Chimeric antigen receptor (CAR) T cell therapy has yielded unprecedented outcomes in some patients with hematological malignancies; however, inhibition by the tumor microenvironment has prevented the broader success of CART cell therapy. We used chronic lymphocytic leukemia (CLL) as a model to investigate the interactions between the tumor microenvironment and CART cells. CLL is characterized by an immunosuppressive microenvironment, an abundance of systemic extracellular vesicles (EVs), and a relatively lower durable response rate to CART cell therapy. In this study, we characterized plasma EVs from untreated CLL patients and identified their leukemic cell origin. CLL-derived EVs were able to induce a state of CART cell dysfunction characterized by phenotypical, functional, and transcriptional changes of exhaustion. We demonstrate that, specifically, PD-L1+ CLL-derived EVs induce CART cell exhaustion. In conclusion, we identify an important mechanism of CART cell exhaustion induced by EVs from CLL patients.

2021-01-21 | GSE147046 | GEO

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