Document Type
Journal Article
Publication Date
4-18-2017
Journal
Nature Communications
Volume
8
DOI
10.1038/ncomms14920
Abstract
The novel Bruton’s tyrosine kinase inhibitor ibrutinib has demonstrated high response rates in B-cell lymphomas; however, a growing number of ibrutinib-treated patients relapse with resistance and fulminant progression. Using chemical proteomics and an organotypic cell-based drug screening assay, we determine the functional role of the tumour microenvironment (TME) in ibrutinib activity and acquired ibrutinib resistance. We demonstrate that MCL cells develop ibrutinib resistance through evolutionary processes driven by dynamic feedback between MCL cells and TME, leading to kinome adaptive reprogramming, bypassing the effect of ibrutinib and reciprocal activation of PI3K-AKT-mTOR and integrin-β1 signalling. Combinatorial disruption of B-cell receptor signalling and PI3K-AKT-mTOR axis leads to release of MCL cells from TME, reversal of drug resistance and enhanced anti-MCL activity in MCL patient samples and patient-derived xenograft models. This study unifies TME-mediated de novo and acquired drug resistance mechanisms and provides a novel combination therapeutic strategy against MCL and other B-cell malignancies.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
APA Citation
Zhao, X., Lwin, T., Silva, A., Shah, B., Tao, J., Fang, B., Sotomayor, E., & +several additional authors (2017). Unification of De Novo and Acquired Ibrutinib Resistance in Mantle Cell Lymphoma.. Nature Communications, 8 (). http://dx.doi.org/10.1038/ncomms14920
Peer Reviewed
1
Open Access
1
Comments
Reproduced with permission of Macmillan Publishers Ltd. Nature Communications