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- W4382011390 abstract "Abstract Gain-of-function mutations in NOTCH1 are among the most frequent genetic alterations in T-cell acute lymphoblastic leukemia (T-ALL), highlighting the Notch signaling pathway as a promising therapeutic target for personalized medicine. Yet, a major limitation for long-term success of targeted therapy is relapse due to tumor heterogeneity or acquired resistance. Thus, we performed a genome-wide CRISPR-Cas9 screen to identify prospective resistance mechanisms to pharmacological NOTCH inhibitors and novel targeted combination therapies to efficiently combat T-ALL. Mutational loss of phosphoinositide-3-kinase regulatory subunit 1 (PIK3R1) causes resistance to Notch inhibition. PIK3R1 deficiency leads to increased PI3K/AKT signaling, which regulates cell cycle and the spliceosome machinery, both at the transcriptional and posttranslational level. Moreover, several therapeutic combinations have been identified, in which simultaneous targeting of the cyclin-dependent kinases 4 and 6 (CDK4/6) and NOTCH proved to be the most efficacious in T-ALL xenotransplantation models." @default.
- W4382011390 created "2023-06-27" @default.
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- W4382011390 date "2023-10-24" @default.
- W4382011390 modified "2023-10-15" @default.
- W4382011390 title "Resistance mechanism to Notch inhibition and combination therapy in human T-cell acute lymphoblastic leukemia" @default.
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- W4382011390 doi "https://doi.org/10.1182/bloodadvances.2023010380" @default.
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