Mature B-cell lymphomas are highly dependent upon the protective lymphoid organ microenvironment for their growth and survival. Targeting integrin-mediated homing and retention of the malignant B cells in the lymphoid organs, using the Bruton's tyrosine kinase (BTK) inhibitor ibrutinib, is a highly efficacious FDA-approved therapy for chronic lymphocytic leukemia (CLL), mantle cell lymphoma (MCL), and Waldenström macroglobulinemia (WM). Unfortunately, a significant subset of patients is intrinsically resistant to ibrutinib or will develop resistance upon prolonged treatment. Here, we describe an unbiased functional genomic CRISPR-Cas9 screening method to identify novel proteins involved in B-cell receptor-controlled integrin-mediated adhesion, which provides novel therapeutic targets to overcome ibrutinib resistance. This screening method is highly flexible and can be easily adapted to identify cell adhesion-regulatory proteins and signaling pathways for other stimuli, adhesion molecules, and cell types. Graphical abstract.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9711945 | PMC |
| http://dx.doi.org/10.21769/BioProtoc.4545 | DOI Listing |
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