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Network-based systems pharmacology reveals heterogeneity in LCK and BCL2 signaling and therapeutic sensitivity of T-cell acute lymphoblastic leukemia.
- Source :
-
Nature cancer [Nat Cancer] 2021 Mar; Vol. 2 (3), pp. 284-299. Date of Electronic Publication: 2021 Jan 21. - Publication Year :
- 2021
-
Abstract
- T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematological malignancy, and novel therapeutics are much needed. Profiling patient leukemia' drug sensitivities ex vivo , we discovered that 44.4% of childhood and 16.7% of adult T-ALL cases exquisitely respond to dasatinib. Applying network-based systems pharmacology analyses to examine signal circuitry, we identified preTCR-LCK activation as the driver of dasatinib sensitivity, and T-ALL-specific LCK dependency was confirmed in genome-wide CRISPR-Cas9 screens. Dasatinib-sensitive T-ALLs exhibited high BCL-XL and low BCL2 activity and venetoclax resistance. Discordant sensitivity of T-ALL to dasatinib and venetoclax is strongly correlated with T-cell differentiation, particularly with the dynamic shift in LCK vs. BCL2 activation. Finally, single-cell analysis identified leukemia heterogeneity in LCK and BCL2 signaling and T-cell maturation stage, consistent with dasatinib response. In conclusion, our results indicate that developmental arrest in T-ALL drives differential activation of preTCR-LCK and BCL2 signaling in this leukemia, providing unique opportunities for targeted therapy.
Details
- Language :
- English
- ISSN :
- 2662-1347
- Volume :
- 2
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Nature cancer
- Publication Type :
- Academic Journal
- Accession number :
- 34151288
- Full Text :
- https://doi.org/10.1038/s43018-020-00167-4