Abstract Title:

Licochalcone A suppresses the proliferation of sarcoma HT-1080 cells, as a selective R132C mutant IDH1 inhibitor.

Abstract Source:

Bioorg Med Chem Lett. 2020 Jan 15 ;30(2):126825. Epub 2019 Nov 30. PMID: 31836442

Abstract Author(s):

Chujiao Hu, Yu Zuo, Jingqiu Liu, Heng Xu, Weike Liao, Yongjun Dang, Cheng Luo, Lei Tang, Hao Zhang

Article Affiliation:

Chujiao Hu


IDH1 mutations are closely related to the development and progression of various human cancers, such as glioblastoma, sarcoma, and acute myeloid leukemia. By screening dozens of reported natural compounds using both wild-type and mutant IDH1 enzymatic assays, we discovered Licochalcone A is a selective inhibitor to the R132C-mutant IDH1 with an ICvalue of 5.176 μM, and inhibits the proliferation of sarcoma HT-1080 cells with an ICvalue of 10.75 μM. Suggested by the molecular docking results, Licochalcone A might occupy the allosteric pocket between the two monomers of IDH1 homodimer, and the R132H mutation was unfavorable for the binding of Licochalcone A with the IDH1 protein, as compared to the R132C mutation. Revealed by the RNA-Seqdata analysis, the Cell Cycle pathway was the most over-represented pathway for HT-1080 cells treated with Licochalcone A. Consistent with these results, Licochalcone A induced apoptosis and cell cycle arrest of HT-1080 cells, while it showed minimal effect against the proliferation of normal RCTECcells. The discovery of Licochalcone A as a mutation-selective IDH1 inhibitor can serve as a promising starting point for the development of mutation-selective anti-tumor lead compounds targeting IDH1.

Study Type : In Vitro Study

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