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Tissue Procurement and Natural History Study of Patients with Malignant Mesothelioma and Other Mesothelin Expressing Cancers

ABSTRACT: Tissue Procurement and Natural History Study of Patients with Malignant Mesothelioma and Other Mesothelin Expressing Cancers

PROVIDER: PRJNA671233 | ENA |

REPOSITORIES: ENA

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Tissue Procurement and Natural History Study of Patients with Malignant Mesothelioma and Other Mesothelin Expressing Cancers

Project description:Tissue Procurement and Natural History Study of Patients with Malignant Mesothelioma and Other Mesothelin Expressing Cancers

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Soluble Mesothelin-Related Peptide as a Prognosticator in Pleural Mesothelioma Patients Receiving Checkpoint Immunotherapy

Project description:Objective: Immune checkpoint therapy (ICT) has significantly impacted malignant pleural mesothelioma (MPM) treatment. Despite some promising results from combination therapies, nearly half of MPM patients do not benefit, underscoring the urgent need for reliable predictive biomarkers. This study assesses the prognostic value of serum soluble mesothelin-related peptide (SMRP) and PD-L1 levels in MPM patients receiving ICT. Results: Seventy-seven patients (62%) were treated with either anti-PD-(L)1 monotherapy, while the remaining 38% were given combination ICT. Higher pre-ICT SMRP levels were notably observed in epithelioid versus non-epithelioid MPM. Serum PD-L1 levels did not show significant differences between the groups. Univariable analysis identified durable clinical benefits, development of immune-related adverse events, and SMRP levels as significantly associated with OS. Multivariable analysis confirmed SMRP as an independent prognostic factor, with lower levels (≤1.35 nmol/L) correlating with improved OS (median survival: 23 months vs. 13 months). This finding was further validated in the prospective ICT clinical trial cohort. Conclusions: SMRP emerges as a promising serum biomarker for predicting survival in MPM patients treated with ICT, warranting further prospective investigation.

2024-08-19 | GSE274983 | GEO

Molecular subtypes of malignant peritoneal mesothelioma

Project description:Malignant Peritoneal Mesothelioma (PeM) is a rare but frequently fatal cancer that originates from the peritoneal lining of the abdomen. Standard treatment of PeM is limited to cytoreductive surgery and/or chemotherapy, and no targeted therapies for PeM yet exist. This study performs comprehensive integrative analysis of genome, transcriptome, and proteome of treatment-naïve PeM tumors with the aim of identifying mesothelioma-related molecular alterations and potentially identifying novel treatment strategies.

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Gene expression profiles in MexTAg transgenic mouse and wild type mouse asbestos-induced mesothelioma

Project description:Malignant mesothelioma is an aggressive tumour arising from the mesothelial cells lining the pleura, peritoneum or pericardium. The principal carcinogen associated with malignant mesothelioma is asbestos . A transgenic mouse model, denoted MexTAg, which encodes the Simian Virus 40 (SV40) large T antigen (TAg) downstream of the mesothelin promoter was developed. Inactivation of the tumour suppressors p53 and RB following binding to TAg results. In this model mesothelioma develops in the mesothelial cell compartment after the mice have been exposed to asbestos. The MexTAg transgenic mouse model of mesothelioma model enables analysis of the molecular events associated with asbestos induced mesothelioma and is utilised here to investigate the molecular dynamics of tumours induced in these mice, using gene expression patterns as a read out.

2016-01-30 | E-MTAB-3988 | biostudies-arrayexpress

Soluble Mesothelin-Related Peptide as a Prognosticator in Pleural Mesothelioma Patients Receiving Checkpoint Immunotherapy

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Tissue Procurement Protocol

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Immunopeptidomics of malignant mesothelioma to identify target antigens for T cell Immunotherapy

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Comprehensive kinase activity assay of desmoplastic malignant mesothelioma

Project description:Desmoplastic malignant mesothelioma is a rare tumor. Due to the rarity, development of new treatment for desmoplastic malignant mesothelioma is difficult. To develop new treatment strategy using existing anti-cancer drugs, kinase activity profiling has not been thoroughly studied. We used PamChip array to identify the peptide profiles of desmoplastic malignant mesothelioma between the patient-derived cell line and the tumor tissue.

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Project description:Malignant mesothelioma (MM) is a treatment-resistant tumor originating in the mesothelial lining of the pleura or the abdominal cavity with very limited treatment options. More effective therapeutic approaches are urgently needed to improve the poor prognosis of MM patients. Chimeric Antigen Receptor (CAR) T cell therapy has emerged as a novel potential treatment for this incurable solid tumor. The tumor-associated antigen mesothelin (MSLN) is an attractive target for cell therapy in MM, as this antigen is expressed at high levels in the diseased pleura or peritoneum in the majority of MM patients and not (or very modestly) present in healthy tissues. Clinical trials using anti-MSLN CAR T cells in MM have shown that this potential therapeutic is relatively safe. However, efficacy remains modest, likely due to the MM tumor microenvironment (TME), which creates strong immunosuppressive conditions and thus reduces anti-MSLN CAR T cell tumor infiltration, efficacy and persistence. Various approaches to overcome these challenges are reviewed here. They include local (intratumoral) delivery of anti-MSLN CAR T cells, improved CAR design and co-stimulation, and measures to avoid T cell exhaustion. Combination therapies with checkpoint inhibitors as well as oncolytic viruses are also discussed. Preclinical studies have confirmed that increased efficacy of anti-MSLN CAR T cells is within reach and offer hope that this form of cellular immunotherapy may soon improve the prognosis of MM patients.

| S-EPMC7885509 | biostudies-literature

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