1. TP-0184 inhibits FLT3/ACVR1to overcome FLT3 inhibitor resistance and hinder AML growth synergistically with venetoclax
- Author
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Tyagi, Anudishi, Jaggupilli, Appalaraju, Ly, Stanley, Yuan, Bin, El-Dana, Fouad, Hegde, Venkatesh L., Anand, Vivek, Kumar, Bijender, Puppala, Mamta, Yin, Zheng, Wong, Stephen T. C., Mollard, Alexis, Vankayalapati, Hariprasad, Foulks, Jason M., Warner, Steven L., Daver, Naval, Borthakur, Gautam, and Battula, V. Lokesh
- Abstract
We identified activin A receptor type I (ACVR1), a member of the TGF-β superfamily, as a factor favoring acute myeloid leukemia (AML) growth and a new potential therapeutic target. ACVR1is overexpressed in FLT3-mutated AML and inhibition of ACVR1expression sensitized AML cells to FLT3 inhibitors. We developed a novel ACVR1inhibitor, TP-0184, which selectively caused growth arrest in FLT3-mutated AML cell lines. Molecular docking and in vitro kinase assays revealed that TP-0184 binds to both ACVR1and FLT3 with high affinity and inhibits FLT3/ACVR1downstream signaling. Treatment with TP-0184 or in combination with BCL2 inhibitor, venetoclax dramatically inhibited leukemia growth in FLT3-mutated AML cell lines and patient-derived xenograft models in a dose-dependent manner. These findings suggest that ACVR1is a novel biomarker and plays a role in AML resistance to FLT3 inhibitors and that FLT3/ACVR1dual inhibitor TP-0184 is a novel potential therapeutic tool for AML with FLT3mutations.
- Published
- 2024
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