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Targeting glycogen synthase kinase 3 for therapeutic benefit in lymphoma
Journal article   Open access   Peer reviewed

Targeting glycogen synthase kinase 3 for therapeutic benefit in lymphoma

Xiaosheng Wu, Mary Stenson, Jithma Abeykoon, Kevin Nowakowski, Lianwen Zhang, Joshua Lawson, Linda Wellik, Ying Li, Jordan Krull, Kerstin Wenzl, …
Blood, Vol.134(4), pp.363-373
07/25/2019
DOI: 10.1182/blood.2018874560
PMCID: PMC6659256
PMID: 31101621
url
https://doi.org/10.1182/blood.2018874560View
Published (Version of record) Open Access

Abstract

Targeting the B-cell receptor and phosphatidylinositol 3-kinase/mTOR signaling pathways has shown meaningful, but incomplete, antitumor activity in lymphoma. Glycogen synthase kinase 3 (GSK3) α and β are 2 homologous and functionally overlapping serine/threonine kinases that phosphorylate multiple protein substrates in several key signaling pathways. To date, no agent targeting GSK3 has been approved for lymphoma therapy. We show that lymphoma cells abundantly express GSK3α and GSK3β compared with normal B and T lymphocytes at the messenger RNA and protein levels. Utilizing a new GSK3 inhibitor 9-ING-41 and by genetic deletion of GSK3α and GSK3β genes using CRISPR/CAS9 knockout, GSK3 was demonstrated to be functionally important to lymphoma cell growth and proliferation. GSK3β binds to centrosomes and microtubules, and lymphoma cells treated with 9-ING-41 become arrested in mitotic prophase, supporting the notion that GSK3β is necessary for the progression of mitosis. By analyzing recently published RNA sequencing data on 234 diffuse large B-cell lymphoma patients, we found that higher expression of GSK3α or GSK3β correlates well with shorter overall survival. These data provide rationale for testing GSK3 inhibitors in lymphoma patient trials.
Gene Expression Animals Biomarkers, Tumor Cell Cycle Checkpoints - drug effects Cell Cycle Checkpoints - genetics Cell Line, Tumor Cell Proliferation - genetics Cell Survival - genetics Disease Models, Animal Gene Targeting - methods Glycogen Synthase Kinase 3 - antagonists & inhibitors Glycogen Synthase Kinase 3 - genetics Glycogen Synthase Kinase 3 - metabolism Glycogen Synthase Kinase 3 beta - genetics Glycogen Synthase Kinase 3 beta - metabolism Humans Indoles - pharmacology Lymphoma - diagnosis Lymphoma - etiology Lymphoma - mortality Lymphoma - therapy Maleimides - pharmacology Mice Mice, Transgenic Mitosis - drug effects Mitosis - genetics Molecular Targeted Therapy - adverse effects Molecular Targeted Therapy - methods Spindle Apparatus - drug effects Treatment Outcome Xenograft Model Antitumor Assays

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