Proteomics of Resistance to Notch1 Inhibition in Acute Lymphoblastic Leukemia Reveals Targetable Kinase Signatures
Overview
Authors
Affiliations
Notch1 is a crucial oncogenic driver in T-cell acute lymphoblastic leukemia (T-ALL), making it an attractive therapeutic target. However, the success of targeted therapy using γ-secretase inhibitors (GSIs), small molecules blocking Notch cleavage and subsequent activation, has been limited due to development of resistance, thus restricting its clinical efficacy. Here, we systematically compare GSI resistant and sensitive cell states by quantitative mass spectrometry-based phosphoproteomics, using complementary models of resistance, including T-ALL patient-derived xenografts (PDX) models. Our datasets reveal common mechanisms of GSI resistance, including a distinct kinase signature that involves protein kinase C delta. We demonstrate that the PKC inhibitor sotrastaurin enhances the anti-leukemic activity of GSI in PDX models and completely abrogates the development of acquired GSI resistance in vitro. Overall, we highlight the potential of proteomics to dissect alterations in cellular signaling and identify druggable pathways in cancer.
Notch Inhibitors and BH3 Mimetics in T-Cell Acute Lymphoblastic Leukemia.
Sergio I, Varricchio C, Squillante F, Cantale Aeo N, Campese A, Felli M Int J Mol Sci. 2024; 25(23).
PMID: 39684550 PMC: 11641392. DOI: 10.3390/ijms252312839.
Wang P, Huang W, Tang S, Xue H, Wu H, Zhang Y Nat Commun. 2024; 15(1):7831.
PMID: 39244606 PMC: 11380666. DOI: 10.1038/s41467-024-52262-0.
µPhos: a scalable and sensitive platform for high-dimensional phosphoproteomics.
Oliinyk D, Will A, Schneidmadel F, Bohme M, Rinke J, Hochhaus A Mol Syst Biol. 2024; 20(8):972-995.
PMID: 38907068 PMC: 11297287. DOI: 10.1038/s44320-024-00050-9.
Alabed H, Pellegrino R, Buratta S, Lema Fernandez A, La Starza R, Urbanelli L Int J Mol Sci. 2024; 25(7).
PMID: 38612731 PMC: 11011837. DOI: 10.3390/ijms25073921.
Novel research and future prospects of artificial intelligence in cancer diagnosis and treatment.
Zhang C, Xu J, Tang R, Yang J, Wang W, Yu X J Hematol Oncol. 2023; 16(1):114.
PMID: 38012673 PMC: 10680201. DOI: 10.1186/s13045-023-01514-5.