Abstract
A dimeric indole alkaloid, isovincathicine consisting of an aspidosperma type and modified iboga with C-7–C-20 connection type skeletons was first isolated from Catharanthus roseus, and the structure including stereochemistry was elucidated on the basis of spectroscopic data as well as DP4 statistical analysis. Isovincathicine inhibited cell proliferation in A549 cells. We investigated the detailed mode of action of isovincathicine-induced inhibitory effects on cell proliferation in A549 cells. Flow cytometric analysis showed that isovincathicine-treated cells accumulated in the G2 phase after 24 h, and the percentage of cells showing cell death increased after 48 h. Western blotting also showed increased expression of BimEL, an apoptosis-related protein, and decreased expression of Mcl-1 and Bcl-xL. Isovincathicine was suggested to induce apoptosis in A549 cells by a mechanism is similar to that of vinblastine.
Graphical abstract
References
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Acknowledgements
This work was partly supported by JSPS KAKENHI (JP 19K07152 and JP 22K06671 to MH) and (22K06685 to YH), Japan.
Funding
This work was partly supported by JSPS KAKENHI (JP 19K07152 and JP 22K06671 to MH) and (22K06685 to YH), Japan.
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MH, AA, CT, YH, TK, and HM conceived and designed the experiments; MH, YH, TK, and HM wrote the paper.
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Hiroki, M., Abulikemu, A., Totsuka, C. et al. Isovincathicine from Catharanthus roseus induces apoptosis in A549 cells. J Nat Med 78, 216–225 (2024). https://doi.org/10.1007/s11418-023-01740-8
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DOI: https://doi.org/10.1007/s11418-023-01740-8