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J Nat Prod ; 87(2): 276-285, 2024 02 23.
Article in English | MEDLINE | ID: mdl-38253024

ABSTRACT

Rocaglaol, embedding a cyclopenta[b]benzofuran scaffold, was isolated mainly from the plants of Aglaia and exhibited nanomolar level antitumor activity. However, the drug-like properties of these compounds are poor. To improve the physicochemical properties of rocaglaol, 36 nitrogen-containing phenyl-substituted rocaglaol derivatives were designed and synthesized. These derivatives were tested for the inhibitory effects on three tumor cell lines, HEL, MDA-231, and SW480, using the MTT assay. Among them, 22 derivatives exhibited good cytotoxic activities with IC50 values between 0.11 ± 0.07 and 0.88 ± 0.02 µM. Fourteen derivatives exhibited stronger cytotoxicity than the positive control, adriamycin. In particular, a water-soluble derivative revealed selective cytotoxic effects on HEL cells (IC50 = 0.19 ± 0.01 µM). This compound could induce G1 cell cycle arrest and apoptosis in HEL cells. Western blot assays suggested that the water-soluble derivative could downregulate the expression of the marker proteins of apoptosis, PARP, caspase-3, and caspase-9, thus inducing apoptosis. Further CETSA and Western blot studies implied that this water-soluble derivative might be an inhibitor of friend leukemia integration 1 (Fli-1). This water-soluble derivative may serve as a potential antileukemia agent by suppressing the expression of Fli-1.


Subject(s)
Antineoplastic Agents , Benzofurans , Antineoplastic Agents/pharmacology , Apoptosis , Doxorubicin , Cell Line, Tumor , Drug Screening Assays, Antitumor , Cell Proliferation , Molecular Structure , Structure-Activity Relationship
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