PMID- 36054746 OWN - NLM STAT- MEDLINE DCOM- 20221021 LR - 20221116 IS - 1878-0261 (Electronic) IS - 1574-7891 (Print) IS - 1574-7891 (Linking) VI - 16 IP - 20 DP - 2022 Oct TI - IL-7 is expressed in malignant mesothelioma and has a prognostic value. PG - 3606-3619 LID - 10.1002/1878-0261.13310 [doi] AB - Malignant pleural mesothelioma (MPM) is an aggressive cancer mainly related to asbestos exposure. Despite recent therapeutic advances, notably immunotherapies, the benefit remains limited and restricted to a small percentage of patients. Thus, a better understanding of the disease is needed to identify new therapeutic strategies. Recently, interleukin 7 receptor (IL-7R) has been described as being expressed by MPM cells and associated with poorer patient survival. Thus, the aim of this work was to study the IL-7R/IL-7 pathway in MPM using patient samples. We found that, although more than 40% of MPM cells expressed IL-7R, IL-7 had no effect on their intracellular signaling. Accordingly, the addition of IL-7 to the culture medium did not affect MPM cell growth. Using The Cancer Genome Atlas (TCGA) database, we showed that high IL7 gene expression in MPM tumors was associated with a higher overall patient survival and an induction of genes involved in the immune response. In pleural effusions (PEs), we found that IL-7 concentration was not a good diagnostic biomarker. However, we observed that high IL-7 levels in PEs were associated with shorter survival of MPM patients, but not of lung cancer patients. The prognostic value of IL-7 was also conserved when only patients with epithelioid mesothelioma, the most common histological type of MPM, were analyzed. Taken together, our study suggests that, although the IL-7R/IL-7 signaling pathway is not functional in MPM cells, IL-7 expression in PEs may have prognostic value in MPM patients. CI - (c) 2022 The Authors. Molecular Oncology published by John Wiley & Sons Ltd on behalf of Federation of European Biochemical Societies. FAU - Mai, Hoa-Le AU - Mai HL AD - CHU Nantes, INSERM, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes Universite, Nantes, France. AD - Immunology Graft Oncology, Labex IGO, Nantes, France. FAU - Deshayes, Sophie AU - Deshayes S AD - Immunology Graft Oncology, Labex IGO, Nantes, France. AD - Nantes Universite, Inserm UMR 1307, CNRS UMR 6075, Universite d'Angers, CRCI2NA, Nantes, France. FAU - Nguyen, Thi-Van-Ha AU - Nguyen TV AD - CHU Nantes, INSERM, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes Universite, Nantes, France. AD - Immunology Graft Oncology, Labex IGO, Nantes, France. FAU - Dehame, Virginie AU - Dehame V AD - Immunology Graft Oncology, Labex IGO, Nantes, France. AD - Nantes Universite, Inserm UMR 1307, CNRS UMR 6075, Universite d'Angers, CRCI2NA, Nantes, France. FAU - Chene, Anne-Laure AU - Chene AL AD - Nantes Universite, Inserm UMR 1307, CNRS UMR 6075, Universite d'Angers, CRCI2NA, Nantes, France. AD - Service de pneumologie, L'institut du thorax, Hopital Guillaume et Rene Laennec, CHU Nantes, Nantes, France. FAU - Brouard, Sophie AU - Brouard S AD - CHU Nantes, INSERM, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes Universite, Nantes, France. AD - Immunology Graft Oncology, Labex IGO, Nantes, France. FAU - Blanquart, Christophe AU - Blanquart C AUID- ORCID: 0000-0002-0917-3747 AD - Immunology Graft Oncology, Labex IGO, Nantes, France. AD - Nantes Universite, Inserm UMR 1307, CNRS UMR 6075, Universite d'Angers, CRCI2NA, Nantes, France. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220910 PL - United States TA - Mol Oncol JT - Molecular oncology JID - 101308230 RN - 0 (Interleukin-7) RN - 1332-21-4 (Asbestos) RN - 0 (Receptors, Interleukin-7) RN - 0 (Biomarkers) SB - IM MH - Humans MH - *Mesothelioma, Malignant MH - *Mesothelioma/genetics/diagnosis MH - *Pleural Neoplasms/genetics MH - Interleukin-7 MH - Prognosis MH - *Asbestos MH - *Lung Neoplasms/pathology MH - Receptors, Interleukin-7 MH - Biomarkers PMC - PMC9580880 OTO - NOTNLM OT - IL-7 OT - IL-7R OT - biomarker OT - mesothelioma OT - pleural fluids COIS- The authors declare no conflict of interest. EDAT- 2022/09/03 06:00 MHDA- 2022/10/22 06:00 PMCR- 2022/10/01 CRDT- 2022/09/02 15:04 PHST- 2022/08/02 00:00 [revised] PHST- 2022/05/04 00:00 [received] PHST- 2022/08/07 00:00 [accepted] PHST- 2022/09/03 06:00 [pubmed] PHST- 2022/10/22 06:00 [medline] PHST- 2022/09/02 15:04 [entrez] PHST- 2022/10/01 00:00 [pmc-release] AID - MOL213310 [pii] AID - 10.1002/1878-0261.13310 [doi] PST - ppublish SO - Mol Oncol. 2022 Oct;16(20):3606-3619. doi: 10.1002/1878-0261.13310. Epub 2022 Sep 10.