ArticleNaunyn-Schmiedeberg's archives of pharmacology2023
Fasudil promotes polyploidization of megakaryoblasts in an acute megakaryocyte leukemia model.
Article in Naunyn-Schmiedeberg's archives of pharmacology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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7 authors at 1 institution in 1 country.
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Abstract
Acute megakaryocytic leukemia (AMKL) is a rare neoplasm caused by abnormal megakaryoblasts. Megakaryoblasts keep dividing and avoid undergoing polyploidization to escape maturation. Small-molecule probes inducing polyploidization of megakaryocytic leukemia cells accelerate the differentiation of megakaryocytes. This study aims to determine that Rho kinase (ROCK) inhibition on megakaryoblasts enhances polyploidization and the inhibition of ROCK1 by fasudil benefits AMKL mice. The study investigated fasudil on the megakaryoblast cells in vitro and in vivo. With the differentiation and apoptosis induction, fasudil was used to treat 6133/MPLW515L mice, and the differentiation level was evaluated. Fasudil could reduce proliferation and promote the polyploidization of megakaryoblasts. Meanwhile, fasudil reduced the disease burden of 6133/MPLW515L AMKL mice at a dose that is safe for healthy mice. Combination therapy of ROCK1 inhibitor fasudil and reported clinical AURKA inhibitor MLN8237 achieved a better antileukemia effect in vivo, which alleviated hepatosplenomegaly and promoted the differentiation of megakaryoblast cells. ROCK1 inhibitor fasudil is a good proliferation inhibitor and polyploidization inducer of megakaryoblast cells and might be a novel rationale for clinical AMKL treatment.
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