TP-0184 inhibits FLT3/ACVR1 to overcome FLT3 inhibitor resistance and hinder AML growth synergistically with venetoclax

Anudishi Tyagi, Appalaraju Jaggupilli, Stanley Ly, Bin Yuan, Fouad El-Dana, Venkatesh L. Hegde, Vivek Anand, Bijender Kumar, Mamta Puppala, Zheng Yin, Stephen T.C. Wong, Alexis Mollard, Hariprasad Vankayalapati, Jason M. Foulks, Steven L. Warner, Naval Daver, Gautam Borthakur, V. Lokesh Battula

Research output: Contribution to journalArticlepeer-review

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. ACVR1 is overexpressed in FLT3-mutated AML and inhibition of ACVR1 expression sensitized AML cells to FLT3 inhibitors. We developed a novel ACVR1 inhibitor, 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 ACVR1 and FLT3 with high affinity and inhibits FLT3/ACVR1 downstream 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 ACVR1 is a novel biomarker and plays a role in AML resistance to FLT3 inhibitors and that FLT3/ACVR1 dual inhibitor TP-0184 is a novel potential therapeutic tool for AML with FLT3 mutations. [Figure not available: see fulltext.].

Original languageEnglish (US)
JournalLeukemia
DOIs
StateAccepted/In press - 2023

ASJC Scopus subject areas

  • Hematology
  • Oncology
  • Cancer Research

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