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Response of unmodified and TGFBR2 knockout tumor infiltrating lymphocytes (TIL) to TGF-B stimulation

ABSTRACT: Response of unmodified and TGFBR2 knockout tumor infiltrating lymphocytes (TIL) to TGF-B stimulation

PROVIDER: PRJNA717276 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14071560_1.fastq.gz	Fastqsanger.gz
	SRR14071560_2.fastq.gz	Fastqsanger.gz
	SRR14071561_1.fastq.gz	Fastqsanger.gz
	SRR14071561_2.fastq.gz	Fastqsanger.gz
	SRR14071562_1.fastq.gz	Fastqsanger.gz

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Response of unmodified and TGFBR2 knockout tumor infiltrating lymphocytes (TIL) to TGF-B stimulation

Project description:TGFBR2 was deleted in ovarian cancer TIL via CRISPR/Cas9 gene editing. Response of unmodified and TGFBR2 knockout TIL to TGF-B stimulation was evaluated via RNA sequencing.

2022-08-03 | GSE169659 | GEO

Autologous Tumor Infiltrating Lymphocytes MDA-TIL in Treating Patients With Recurrent or Refractory Ovarian Cancer, Colorectal Cancer, or Pancreatic Ductal Adenocarcinoma

Project description:This phase II trial studies how well autologous tumor infiltrating lymphocytes MDA-TIL works in treating patients with ovarian cancer, colorectal cancer, or pancreatic ductal adenocarcinoma that has come back (recurrent) or does not respond to treatment (refractory). Autologous tumor infiltrating lymphocytes MDA-TIL, made by collecting and growing specialized white blood cells (called T-cells) from a patient’s tumor, may help to stimulate the immune system in different ways to stop tumor cells from growing.

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Nivolumab and Tumor Infiltrating Lymphocytes (TIL) in Advanced Non-Small Cell Lung Cancer

Project description:Nivolumab and Tumor Infiltrating Lymphocytes (TIL) in Advanced Non-Small Cell Lung Cancer

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Nivolumab and Tumor Infiltrating Lymphocytes (TIL) in Advanced Non-Small Cell Lung Cancer

Project description:Nivolumab and Tumor Infiltrating Lymphocytes (TIL) in Advanced Non-Small Cell Lung Cancer

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Adoptive Cell Therapy Using Cancer Specific CD8+ Tumor Infiltrating Lymphocytes in Adult Patients With Solid Tumors

Project description:The subject of this study is the adoptive transfer of selected autologous tumor infiltrating lymphocytes (TIL) after in vitro expansion for the treatment of solid tumor malignancies. The TIL selection process is based on evidence showing that CD8+ TIL which co-express both CD39 and CD103 harbor the bulk of tumor-reactivity and that the remaining CD8 TIL is mainly composed of non-tumor reactive bystander cells. All of the expanded TIL that are produced (1-40 billion are expected) will be delivered in the form of a cell suspension to the participants by intravenous infusion. It is proposed that these selected TIL will produce a more potent and efficacious treatment of late-stage cancer.

| 63320 | ecrin-mdr-crc

Microbial Peptides Activate Tumor-Infiltrating Lymphocytes in Glioblastoma

Project description:Microbial organisms play key roles in numerous physiological processes in the human body and have recently been shown to modify the response to cancer radiotherapy and immune checkpoint inhibitors. Here, we demonstrate that HLA molecules of both glioblastoma tissues as well as tumor cell lines present bacteria-specific peptides. This finding prompted us to examine whether tumor-infiltrating lymphocytes (TILs) recognize intratumoral microbiota. Indeed, bacterial peptides eluted from HLA-DR II molecules are recognized by both TILs, albeit weakly, and peripheral blood-derived memory CD4+ T cells, which, upon stimulation with bacterial peptides, also recognize several tumor antigens. Furthermore, using an unbiased antigen discovery approach for a TIL CD4+ T cell clone (TCC) we show that it recognizes a broad spectrum of peptides from pathogenic bacteria, commensal gut microbiota and also glioblastoma-related tumor antigens. These peptides were strongly stimulatory for bulk TILs and peripheral blood memory cells. Our data hint at how bacterial pathogens and bacterial gut microbiota can be involved in specific immune recognition of tumor antigens.

2023-02-20 | PXD036811 | Pride

CD8+/CD103+ tumor-infiltrating lymphocytes are tumor-specific tissue-resident memory T cells and a prognostic factor for survival in lung cancer patients

Project description:We had previously demonstrated the role of CD103 integrin on lung tumor-infiltrating lymphocyte (TIL) clones in promoting specific TCR-mediated epithelial tumor cell cytotoxicity. However, the contribution of CD103 on intratumoral T-cell distribution and functions, and the prognosis significance of TIL subpopulations in non-small cell lung carcinoma (NSCLC) have thus far not been systematically addressed. Here we investigate the transcriptomic profil of these cell population, using PBMC cells as control.

2015-06-29 | E-MTAB-3266 | biostudies-arrayexpress

Stimulation of tumor infiltrating B-cells improves ex-vivo TIL expansion for melanoma sample immunotherapy I

Project description:Many studies have shown association of tumor infiltrating B-cells and presence of tertiary lymphoid structure with improved clinical responses to immune checkpoint inhibitors therapy. We hypothesized that their presence could also have an impact on TIL therapy response. To address this, we performed RNA-seq of FFPE samples from a cohort of patients that received TIL therapy. Melanoma tumors collected prior to TIL infusion were evaluated for immune content in 9 responders and 11 non-responders to TIL therapy. Our data demonstrate an increase in class-switched memory B-cells in responders compared with non-responders to TIL therapy. In the myeloid compartment, increased presence of dendritic cell populations (pDC, aDC, and iDC) and basophils was observed in responders to TIL therapy, as well as higher content of γδ T cells and effector memory CD8+ T cells (CD8+ Tem) in the T-cell compartment. Next, we assessed the TLS presence in the same cohort by a gene expression signature of 12 chemokines using principal component analysis. The responders showed a higher TLS score compared with the non-responder patients, suggesting that patients responding to TIL therapy had more TLS in their tumors than the non-responder patients. These observations indicate that, same as in the immune checkpoint inhibitors therapy response, presence of B-cells and TLS might have a positive impact in the clinical outcome to TIL therapy.

2024-06-30 | GSE217387 | GEO

Expansion of tumor infiltrating lymphocytes (TIL) from bladder cancer.

Project description:Advanced bladder cancer patients have limited therapeutic options resulting in a median overall survival (OS) between 12 and 15 months. Adoptive cell therapy (ACT) using tumor infiltrating lymphocytes (TIL) has been used successfully in treating patients with metastatic melanoma, resulting in a median OS of 52 months. In this study, we investigated the feasibility of expanding TIL from the tumors of bladder cancer patients. Primary bladder tumors and lymph node (LN) metastases were collected. Tumor specimens were minced into fragments, placed in individual wells of a 24-well plate, and propagated in high dose IL-2 for four weeks. Expanded TIL were phenotyped by flow cytometry and anti-tumor reactivity was assessed after co-culture with autologous tumor digest and IFN-gamma ELISA. Of the 28 transitional cell bladder or LN tumors collected, 14/20 (70%) primary tumors and all of the LN metastases demonstrated TIL expansion. Expanded TIL were predominantly CD3+ (median 63%, range 10-87%) with a median of 30% CD8 + T cells (range 5-70%). TIL secreted IFN-gamma in response to autologous tumor. Addition of agonisitic 4-1BB antibody improved TIL expansion from primary bladder tumors regardless of pre-treatment with chemotherapy. This study establishes the practical first step towards an autologous TIL therapy process for therapeutic testing in patients with bladder cancer.

| S-EPMC6140546 | biostudies-literature

SPP1+ macrophages in HR+ breast cancer are associated with tumour-infiltrating lymphocytes.

Project description:Breast cancer, categorised into hormone receptor-positive (HR+), HER2-positive (HER2+), and triple-negative (TNBC) subtypes, exhibits varied outcomes based on the number of tumour-infiltrating lymphocytes (TILs). Increased TIL levels are associated with better outcomes in HER2+ and TNBC, while HR+ individuals with high TIL levels show shorter survival but greater neoadjuvant chemotherapy response. To explore the divergent roles of TIL levels across various subtypes and their effect on immune cell composition, we employed single-cell RNA sequencing on 31 patients with breast cancer. HR+ breast cancer with high TIL levels (TIL-high) revealed increased SPP1+ macrophages, increased SPP1 expression in other monocytes/macrophages (mono/macro) subgroups, and enriched pathways associated with extracellular matrix (ECM) remodelling in mono/macro. Moreover, cell–cell interaction analyses revealed enhanced SPP1, MIF, and FN1 signalling in the interaction between SPP1+ macrophages and T-cells in TIL-high HR+ breast cancer. Spatial transcriptomics data highlighted the close proximity of SPP1+ macrophages, CD8+ T-cells, and CD4+ T-cells in TIL-high HR+ breast cancer. Our findings unveil the novel influence of SPP1+ macrophages on T-cells in TIL-high HR+ breast cancer, potentially explaining the poor prognosis and offering insights for targeted interventions.

2024-10-09 | GSE261774 | GEO

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