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Harringtonine (HT) and homoharringtonine (HHT) are two alkaloids isolated from the bark of the evergreen tree Cephalotaxus hainanensis Li in the 1970s. They were found to have activity against murine leukemia, Lewis lung carcinoma and B16 melanoma, and used as anti-leukemia drugs clinically.
Antitumor activities of harringtonine(HA) and homoharringtonine(HO) both belong to cephalotaxus alkaloids were compared with those of vinca alkaloids, vincristine (VCR) and vinblastine (VLB). HA and HO had significant activities against P388 leukemia, L1210 leukemia and B16 melanoma by
The antitumor and anti-invasion activities of taxol, harringtonine, homoharringtonine and camptothecin on highly metastatic melanoma B16-BL6 and human fibrosarcoma HT-1080 cells were reported in this paper. Results demonstrated that taxol, harringtonine, homoharringtonine and camptothecin exhibited
Recent progress on the study of anticancer drugs originating from plants in China is reviewed in this paper. Guided by the experience of traditional Chinese medicine, several new drugs have been found. Indirubin from Indigofera tinctoria is useful for the treatment of chronic myelocytic leukemia.