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Small molecule SUMO inhibition for biomarker-informed B-cell lymphoma therapy

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Item Type:Article
Title:Small molecule SUMO inhibition for biomarker-informed B-cell lymphoma therapy
Creators: Demel, U.M. ORCID logoORCID: https://orcid.org/0000-0002-6480-4185, Wirth, M. ORCID logoORCID: https://orcid.org/0000-0002-8340-0872, Yousefian, S. ORCID logoORCID: https://orcid.org/0000-0003-0902-0369, Zhang, L., Isaakidis, K., Dönig, J., Böger, M. ORCID logoORCID: https://orcid.org/0000-0001-9301-5022, Singh, N., Köse, H., Haas, S. ORCID logoORCID: https://orcid.org/0000-0001-9227-2051, Müller, S., Schick, M. ORCID logoORCID: https://orcid.org/0009-0003-8626-0611 and Keller, U. ORCID logoORCID: https://orcid.org/0000-0002-8485-1958
Abstract:Aberrant activity of the SUMOylation pathway has been associated with MYC overexpression and poor prognosis in aggressive B-cell lymphoma (BCL) and other malignancies. Recently developed small molecule inhibitors of SUMOylation (SUMOi) target the heterodimeric E1 SUMO activation complex (SAE1/UBA2). Here, we report that activated MYC signaling is an actionable molecular vulnerability in vitro and in a pre-clinical murine in vivo model of MYCdriven BCL. While SUMOi conferred direct effects on MYC-driven lymphoma cells, SUMO inhibition also resulted in substantial remodeling of various subsets of the innate and specific immunity in vivo. Specifically, SUMOi increased the number of memory B-cells as well as cytotoxic and memory T-cells, subsets that are attributed a key role within a coordinated antitumor immune response. In summary, our data constitute pharmacologic SUMOi as a powerful therapy in a subset of B-cell lymphomas causing massive remodeling of the normal B-cell and T-cell compartment.
Keywords:SUMO, MYC, B-Cell Lymphoma, Immune Activation, Animals, Mice
Source:Haematologica
ISSN:0390-6078
Publisher:Ferrata Storti Foundation
Volume:108
Number:2
Page Range:555-567
Date:February 2023
Official Publication:https://doi.org/10.3324/haematol.2022.280995
PubMed:View item in PubMed

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