Polymethoxyflavones from Gardenia oudiepe (Rubiaceae) induce cytoskeleton disruption-mediated apoptosis and sensitize BRAF-mutated melanoma cells to chemotherapy
作者:Raimundo Gonçalves de Oliveira-Júnior、Nolwenn Marcoult-Fréville、Grégoire Prunier、Laureen Beaugeard、Edilson Beserra de Alencar Filho、Eduard David Simões Mourão、Sylvie Michel、Lucindo José Quintans-Júnior、Jackson Roberto Guedes da Silva Almeida、Raphaël Grougnet、Laurent Picot
DOI:10.1016/j.cbi.2020.109109
日期:2020.7
A series of 10 natural and semisynthetic flavonoids (1 to 10) were obtained from Gardenia oudiepe (Rubiaceae), an endemic plant from New Caledonia. Most of them were polymethoxylated flavones (PMFs) of rare occurrence. After a cell viability screening test, PMFs 2 and 3 showed significant cytotoxic activity against A2058 human melanoma cells (IC50 = 3.92 and 8.18 mu M, respectively) and were selected for in-depth pharmacological assays. Both compounds inhibited cell migration and induced apoptosis and cell cycle arrest after 72h of treatment. Immunofluorescence assays indicated that these outcomes were possibly related to the induction of cytoskeleton disruption associated to actin and tubulin depolymerization. These data were confirmed by molecular docking studies, which showed a good interaction between PMFs 2 and 3 and tubulin, particularly at the colchicine binding site. As A2058 are considered as chemoresistant to conventional chemotherapy, compounds 2 and 3 (1/2 IC50) were associated to clinically-used antimelanoma drugs (vemurafenib and dacarbazine) and combined therapies efficacy was assessed by the MTT assay. PMFs 2 restored the sensitivity of A2058 cells to dacarbazine treatment (IC50 = 49.38 mu M vs .> 100 mu M). Taken together, these data suggest that PMFs from G. oudiepe could be potential leaders for the design of new antimelanoma drugs.
Über die Bildung der partiellen Acetate von Flavonen, Flavanonen, Anthrachinonen und dergleichen Verbindungetn
作者:Masami Simokoriyama
DOI:10.1246/bcsj.16.284
日期:1941.8
Antivascular and anti-parasite activities of natural and hemisynthetic flavonoids from New Caledonian Gardenia species (Rubiaceae)
作者:Linh H. Mai、Guy G. Chabot、Philippe Grellier、Lionel Quentin、Vincent Dumontet、Cyril Poulain、Laila S. Espindola、Sylvie Michel、Hue T.B. Vo、Brigitte Deguin、Raphaël Grougnet
DOI:10.1016/j.ejmech.2015.01.012
日期:2015.3
A series of 16 flavonoids were isolated and prepared from budexudate of Gardenia urvillei and Gardenia oudiepe, endemic to New Caledonia. Most of them are rare polymethoxylated flavones. Some of these compounds showed noticeable activity against Leishmania (Leishmania) amazonensis, Plasmodium falciparum and Trypanosoma brucei gambiense, in addition to tubulin polymerization inhibition at low micromolar