Somatic IL4R mutations in primary mediastinal large B-cell lymphoma lead to constitutive JAK-STAT signaling activation
- PMID: 29467182
- DOI: 10.1182/blood-2017-09-808907
Somatic IL4R mutations in primary mediastinal large B-cell lymphoma lead to constitutive JAK-STAT signaling activation
Abstract
Primary mediastinal large B-cell lymphoma (PMBCL) is a distinct subtype of diffuse large B-cell lymphoma thought to arise from thymic medullary B cells. Gene mutations underlying the molecular pathogenesis of the disease are incompletely characterized. Here, we describe novel somatic IL4R mutations in 15 of 62 primary cases of PMBCL (24.2%) and in all PMBCL-derived cell lines tested. The majority of mutations (11/21; 52%) were hotspot single nucleotide variants in exon 8, leading to an I242N amino acid change in the transmembrane domain. Functional analyses establish this mutation as gain of function leading to constitutive activation of the JAK-STAT pathway and upregulation of downstream cytokine expression profiles and B cell-specific antigens. Moreover, expression of I242N mutant IL4R in a mouse xenotransplantation model conferred growth advantage in vivo. The pattern of concurrent mutations within the JAK-STAT signaling pathway suggests additive/synergistic effects of these gene mutations contributing to lymphomagenesis. Our data establish IL4R mutations as novel driver alterations and provide a strong preclinical rationale for therapeutic targeting of JAK-STAT signaling in PMBCL.
© 2018 by The American Society of Hematology.
Similar articles
-
Characterization of DLBCL with a PMBL gene expression signature.Blood. 2021 Jul 15;138(2):136-148. doi: 10.1182/blood.2020007683. Blood. 2021. PMID: 33684939
-
Emerging biological insights and novel treatment strategies in primary mediastinal large B-cell lymphoma.Semin Hematol. 2015 Apr;52(2):119-25. doi: 10.1053/j.seminhematol.2015.01.002. Epub 2015 Jan 17. Semin Hematol. 2015. PMID: 25805591 Review.
-
Selective JAK2 inhibition specifically decreases Hodgkin lymphoma and mediastinal large B-cell lymphoma growth in vitro and in vivo.Clin Cancer Res. 2014 May 15;20(10):2674-83. doi: 10.1158/1078-0432.CCR-13-3007. Epub 2014 Mar 7. Clin Cancer Res. 2014. PMID: 24610827 Free PMC article.
-
Recurrent mutations of the STAT6 DNA binding domain in primary mediastinal B-cell lymphoma.Blood. 2009 Aug 6;114(6):1236-42. doi: 10.1182/blood-2009-03-209759. Epub 2009 May 7. Blood. 2009. PMID: 19423726 Free PMC article.
-
Mining for JAK-STAT mutations in cancer.Trends Biochem Sci. 2008 Mar;33(3):122-31. doi: 10.1016/j.tibs.2007.12.002. Trends Biochem Sci. 2008. PMID: 18291658 Review.
Cited by
-
Distinct Hodgkin lymphoma subtypes defined by noninvasive genomic profiling.Nature. 2024 Jan;625(7996):778-787. doi: 10.1038/s41586-023-06903-x. Epub 2023 Dec 11. Nature. 2024. PMID: 38081297
-
Elevated serum TARC levels precede classic Hodgkin lymphoma diagnosis by several years.Blood. 2023 Nov 30;142(22):1928-1931. doi: 10.1182/blood.2023020959. Blood. 2023. PMID: 37748137 Free PMC article.
-
Structural insights into the bi-specific cross-over dual variable antibody architecture by cryo-EM.Sci Rep. 2023 May 29;13(1):8694. doi: 10.1038/s41598-023-35678-4. Sci Rep. 2023. PMID: 37248285 Free PMC article.
-
Molecular Evolution of Classic Hodgkin Lymphoma Revealed Through Whole-Genome Sequencing of Hodgkin and Reed Sternberg Cells.Blood Cancer Discov. 2023 May 1;4(3):208-227. doi: 10.1158/2643-3230.BCD-22-0128. Blood Cancer Discov. 2023. PMID: 36723991 Free PMC article.
-
Role of estrogen receptor signaling pathway-related genes in diffuse large B-cell lymphoma and identification of key targets via integrated bioinformatics analysis and experimental validation.Front Oncol. 2022 Nov 29;12:1029998. doi: 10.3389/fonc.2022.1029998. eCollection 2022. Front Oncol. 2022. PMID: 36531013 Free PMC article.
Publication types
MeSH terms
Substances
Grants and funding
LinkOut - more resources
Full Text Sources
Other Literature Sources