title: Apoptosis-inducing effect of a new bisphosphonate, YM529, on various hematopoietic tumor cell lines.
abstract: In recent years, it has been reported that bisphosphonates inhibited the cell cycle of myeloma cells to inhibit cell proliferation directly, and it was also reported that bisphosphonates induced apoptosis of myeloma cells in vitro. Recently, YM529 was developed as a new third-generation bisphosphonate. In our experiment, we investigated whether YM529 showed an antitumor effect on hematopoietic tumor cell lines other than myeloma, and we compared YM529 with YM175, which had a relatively more potent antitumor effect than that of existing bisphosphonates. We found that YM529 inhibited cell proliferation in various hematopoietic tumor cell lines (acute promyelocytic leukemia cell line HL-60, chronic myeloid leukemia cell line K562, histiocytic lymphoma cell line U937, lymphoblastic leukemia T cell line Jurkat, acute lymphoblastic leukemia T cell line MOLT-4, lymphoblastic leukemia B cell line CCRF-SB) including myeloma (myeloma cell line HS-Sultan) dose-dependently and time-dependently to a degree equivalent or superior to that in myeloma, and induced apoptosis at a lower concentration as compared with YM175. We confirmed many dead cells as well as apoptosis based on the detection of the nuclei with separate globular structure, the activation of caspase-3, and the decrease in mitochondrial transmembrane potential. Therefore, it is concluded that further utilization of YM529 can be expected against hematopoietic tumor cells in the future.
authors.affiliation: Kinki University School of Pharmaceutical Sciences, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan. nishida@phar.kindai.ac.jp
authors.forename: Shozo
authors.initials: S
authors.lastname: Nishida
authors.forename: Shigeru
authors.initials: S
authors.lastname: Kikuichi
authors.forename: Hisae
authors.initials: H
authors.lastname: Haga
authors.forename: Shohei
authors.initials: S
authors.lastname: Yoshioka
authors.forename: Masonobu
authors.initials: M
authors.lastname: Tsubaki
authors.forename: Katsuki
authors.initials: K
authors.lastname: Fujii
authors.forename: Kiyohiro
authors.initials: K
authors.lastname: Irimajiri
mesh_terms: D017209:Apoptosis / Q000187:drug effects* / Q000502:physiology; D002470:Cell Survival / Q000187:drug effects / Q000502:physiology; D004164:Diphosphonates / Q000494:pharmacology* / Q000627:therapeutic use; D018922:HL-60 Cells; D019337:Hematologic Neoplasms / Q000188:drug therapy* / Q000473:pathology; D006801:Humans; D007093:Imidazoles / Q000494:pharmacology* / Q000627:therapeutic use; D007425:Intracellular Membranes / Q000187:drug effects / Q000502:physiology; D019169:Jurkat Cells; D020014:K562 Cells; D008564:Membrane Potentials / Q000187:drug effects; D008928:Mitochondria / Q000187:drug effects / Q000502:physiology; D014407:Tumor Cells, Cultured / Q000187:drug effects / Q000502:physiology; D020298:U937 Cells
chemical_list: D004164:Diphosphonates; D007093:Imidazoles; C087958:YM 529