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|Ref Type||Journal Article|
|Authors||Marín-Ramos NI, Balabasquer M, Ortega-Nogales FJ, Torrecillas IR, Gil-Ordóñez A, Marcos-Ramiro B, Aguilar-Garrido P, Cushman I, Romero A, Medrano FJ, Gajate C, Mollinedo F, Philips MR, Campillo M, Gallardo M, Martín-Fontecha M, López-Rodríguez ML, Ortega-Gutiérrez S|
|Title||A Potent Isoprenylcysteine Carboxylmethyltransferase (ICMT) Inhibitor Improves Survival in Ras-Driven Acute Myeloid Leukemia.|
|Journal||Journal of medicinal chemistry|
|Date||2019 07 11|
|Abstract Text||Blockade of Ras activity by inhibiting its post-translational methylation catalyzed by isoprenylcysteine carboxylmethyltransferase (ICMT) has been suggested as a promising antitumor strategy. However, the paucity of inhibitors has precluded the clinical validation of this approach. In this work we report a potent ICMT inhibitor, compound 3 [UCM-1336, IC50 = 2 μM], which is selective against the other enzymes involved in the post-translational modifications of Ras. Compound 3 significantly impairs the membrane association of the four Ras isoforms, leading to a decrease of Ras activity and to inhibition of Ras downstream signaling pathways. In addition, it induces cell death in a variety of Ras-mutated tumor cell lines and increases survival in an in vivo model of acute myeloid leukemia. Because ICMT inhibition impairs the activity of the four Ras isoforms regardless of its activating mutation, compound 3 surmounts many of the common limitations of available Ras inhibitors described so far. In addition, these results validate ICMT as a valuable target for the treatment of Ras-driven tumors.|
|Molecular Profile||Treatment Approach|
|Gene Name||Source||Synonyms||Protein Domains||Gene Description||Gene Role|
|Drug Name||Trade Name||Synonyms||Drug Classes||Drug Description|
|UCM-1336||UCM1336|UCM 1336||UCM-1336 is an inhibitor of isoprenylcysteine carboxylmethyltransferase (ICMT), which may result in mislocalization of Ras, decreased Ras activity, and induction of cell death (PMID: 31181882).|
|Gene||Variant||Impact||Protein Effect||Variant Description||Associated with drug Resistance|
|Molecular Profile||Indication/Tumor Type||Response Type||Therapy Name||Approval Status||Evidence Type||Efficacy Evidence||References|
|NRAS Q61K||melanoma||predicted - sensitive||UCM-1336||Preclinical - Cell culture||Actionable||In a preclinical study, UCM-1336 treatment inhibited growth of melanoma cells harboring NRAS Q61K in culture (PMID: 31181882).||31181882|
|NRAS Q61K||acute myeloid leukemia||predicted - sensitive||UCM-1336||Preclinical - Cell line xenograft||Actionable||In a preclinical study, UCM-1336 treatment inhibited growth of acute myeloid leukemia cells harboring NRAS Q61K in culture, and reduced bone marrow tumor burden and significantly prolonged survival (HR=6.211; p=0.0274) in cell line xenograft models (PMID: 31181882).||31181882|