title: Effects of herbimycin A derivatives on growth and differentiation of K562 human leukemic cells.
abstract: Herbimycin A, a specific tyrosine kinase inhibitor, induced erythroid differentiation of human myelogenous leukemia K562 cells with a high level of bcr/abl tyrosine kinase. Several derivatives of herbimycin A were synthesized and their effects on cell proliferation and differentiation of K562 cells were examined. Of the compounds tested, 19-allylaminoherbimycin A was the most effective in inducing differentiation of K562 cells. However, the parent compound was the most potent growth inhibitor, suggesting that chemical modification of herbimycin A reduces the growth-inhibiting activity. The sensitivities of K562 cells to herbimycin derivatives were different from those of a rat kidney cell line infected with Rous sarcoma virus (v-src), suggesting that bcr/abl kinase may differ in sensitivity from other tyrosine kinases. These results indicate that a specific inhibitor of bcr/abl kinase could be an effective antitumor agent against chronic myelogenous leukemia.
authors.affiliation: Department of Chemotherapy, Saitama Cancer Center Research Institute, Ina-machi, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Honma
authors.forename: T
authors.initials: T
authors.lastname: Kasukabe
authors.forename: M
authors.initials: M
authors.lastname: Hozumi
authors.forename: K
authors.initials: K
authors.lastname: Shibata
authors.forename: S
authors.initials: S
authors.lastname: Omura
mesh_terms: D000328:Adult; D000368:Aged; D000903:Antibiotics, Antineoplastic / Q000494:pharmacology*; D016227:Benzoquinones; D002454:Cell Differentiation / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects; D005260:Female; D006801:Humans; D047029:Lactams, Macrocyclic; D007951:Leukemia, Myeloid / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D011505:Protein-Tyrosine Kinases / Q000037:antagonists & inhibitors; D011809:Quinones / Q000494:pharmacology*; D017828:Rifabutin / Q000031:analogs & derivatives; D013329:Structure-Activity Relationship; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D000903:Antibiotics, Antineoplastic; D016227:Benzoquinones; D047029:Lactams, Macrocyclic; D011809:Quinones; D017828:Rifabutin; C020754:herbimycin; D011505:Protein-Tyrosine Kinases