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Vinca alkaloids were originally manufactured by extracting them from Catharanthus roseus (Madagascar Periwinkle). [1] Podophyllum spp. Two chemotherapy drugs, etoposide and teniposide, are synthetic chemical compounds similar in chemical structure to the toxin podophyllotoxin which is found in Podophyllum peltatum (May Apple). [1] Taxus brevifolia
The Madagascan periwinkle Catharanthus roseus L. is the source for a number of important natural products, [1] including catharanthine and vindoline [2] and the vinca alkaloids it produces from them: leurosine and the chemotherapy agents vinblastine [3] and vincristine, [4] all of which can be obtained from the plant.
The vinca alkaloids include at least 86 alkaloids extracted from plants in the genus Vinca. [ 16 ] [ 17 ] [ 18 ] The chemotherapy agent vincristine is extracted from a closely related species, Catharanthus roseus , [ 19 ] [ 20 ] [ 21 ] and is used to treat some leukemias , [ 22 ] lymphomas , [ 23 ] and childhood cancers, [ 24 ] as well as ...
Mechanism of action of taxanes. The principal mechanism of action of the taxane class of drugs is the disruption of microtubule function. Microtubules are essential to cell division, and taxanes stabilize GDP-bound tubulin in the microtubule, thereby inhibiting the process of cell division as depolymerization is prevented.
Vinblastine is a vinca alkaloid [9] [2] [10] and a chemical analogue of vincristine. [11] [12] It binds tubulin, thereby inhibiting the assembly of microtubules. [13]Vinblastine treatment causes M phase specific cell cycle arrest by disrupting microtubule assembly and proper formation of the mitotic spindle and the kinetochore, each of which are necessary for the separation of chromosomes ...
The Madagascan periwinkle Catharanthus roseus L. is the source for a number of important natural products, including catharanthine and vindoline [13] and the vinca alkaloids it produces from them: leurosine and the chemotherapy agents vinblastine and vincristine, all of which can be obtained from the plant.
Vinca alkaloids are amines produced by the hallucinogenic plant Catharanthus roseus (Madagascar Periwinkle). Vinca alkaloids inhibit microtubule polymerization. Vinblastine—used to treat leukaemia, Hodgkin's lymphoma, non-small cell lung cancer, breast cancer and testicular cancer. It is also a component in a large number of chemotherapy ...
Camptothecin (CPT) is a topoisomerase inhibitor.It was discovered in 1966 by M. E. Wall and M. C. Wani in systematic screening of natural products for anticancer drugs.It was isolated from the bark and stem of Camptotheca acuminata (Camptotheca, Happy tree), a tree native to China used in traditional Chinese medicine.