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Alteration of cell cycle progression in human leukemia cell line (KOPM-28) induced by 12-o-tetradecanoylphorbol-13-acetate. 1988

H Tsuda, and M Sakaguchi, and M Kawakita, and S Nakazawa, and T Mori, and K Takatsuki
Second Department of Internal Medicine, Kumamoto University School of Medicine, Japan.

Terminal cell differentiation usually results in an irreversible arrest in the G1 phase of the cell cycle and loss of cell renewal ability. Human promyelocytic leukemia HL-60 cells induced with 12-o-tetradecanoylphorbol-13-acetate (TPA) differentiate into monocytes/macrophages and accumulate in G1. We determined the effect of TPA on the growth kinetics of a human leukemia cell line (KOPM-28), which developed several of the characteristics of megakaryocytes in response to TPA, such as the surface antigen complex IIb/IIIa, platelet peroxidase and polyploidy. Cell growth was immediately and completely inhibited by TPA. Flow cytometric analysis of cellular DNA content revealed a gradual decrease in cells in G1 and an accumulation of cells in G2. These data suggest that TPA prolonged G1 and rapidly arrested the cells in G2. Synchronized cells were utilized to further analyze the rapid G2 arrest. Cells arrested with aphidicolin at the G1/S interphase were released, and the effects of TPA (added at different intervals) on cell cycle progression were examined 14 h after release. The results showed that TPA added at the end of the S phase, as well as at the G1/S interphase incompletely but distinctly arrested cells in G2. Moreover, G2 arrest was observed when TPA was added to cells released from a colcemid-induced G2/M block, suggesting that cells already in G2 were inhibited by TPA from moving through M to G1. Since some cells became multi-nucleated in the course of incubation with TPA, this G2 accumulation may have resulted at least in part from a prolongation of the phase or a transient G2 block. These changes in cell cycle progression induced by TPA may be characteristic of and/or related to megakaryocytic differentiation of hemopoietic precursor cells.

UI MeSH Term Description Entries
D007399 Interphase The interval between two successive CELL DIVISIONS during which the CHROMOSOMES are not individually distinguishable. It is composed of the G phases (G1 PHASE; G0 PHASE; G2 PHASE) and S PHASE (when DNA replication occurs). Interphases
D007942 Leukemia, Experimental Leukemia induced experimentally in animals by exposure to leukemogenic agents, such as VIRUSES; RADIATION; or by TRANSPLANTATION of leukemic tissues. Experimental Leukemia,Experimental Leukemias,Leukemia Model, Animal,Leukemias, Experimental,Animal Leukemia Model,Animal Leukemia Models,Leukemia Models, Animal
D008677 Metaphase The phase of cell nucleus division following PROMETAPHASE, in which the CHROMOSOMES line up across the equatorial plane of the SPINDLE APPARATUS prior to separation.
D009000 Monocytes Large, phagocytic mononuclear leukocytes produced in the vertebrate BONE MARROW and released into the BLOOD; contain a large, oval or somewhat indented nucleus surrounded by voluminous cytoplasm and numerous organelles. Monocyte
D002453 Cell Cycle The complex series of phenomena, occurring between the end of one CELL DIVISION and the end of the next, by which cellular material is duplicated and then divided between two daughter cells. The cell cycle includes INTERPHASE, which includes G0 PHASE; G1 PHASE; S PHASE; and G2 PHASE, and CELL DIVISION PHASE. Cell Division Cycle,Cell Cycles,Cell Division Cycles,Cycle, Cell,Cycle, Cell Division,Cycles, Cell,Cycles, Cell Division,Division Cycle, Cell,Division Cycles, Cell
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013755 Tetradecanoylphorbol Acetate A phorbol ester found in CROTON OIL with very effective tumor promoting activity. It stimulates the synthesis of both DNA and RNA. Phorbol Myristate Acetate,12-Myristoyl-13-acetylphorbol,12-O-Tetradecanoyl Phorbol 13-Acetate,Tetradecanoylphorbol Acetate, 4a alpha-Isomer,12 Myristoyl 13 acetylphorbol,12 O Tetradecanoyl Phorbol 13 Acetate,13-Acetate, 12-O-Tetradecanoyl Phorbol,Acetate, Phorbol Myristate,Acetate, Tetradecanoylphorbol,Myristate Acetate, Phorbol,Phorbol 13-Acetate, 12-O-Tetradecanoyl,Tetradecanoylphorbol Acetate, 4a alpha Isomer
D014407 Tumor Cells, Cultured Cells grown in vitro from neoplastic tissue. If they can be established as a TUMOR CELL LINE, they can be propagated in cell culture indefinitely. Cultured Tumor Cells,Neoplastic Cells, Cultured,Cultured Neoplastic Cells,Cell, Cultured Neoplastic,Cell, Cultured Tumor,Cells, Cultured Neoplastic,Cells, Cultured Tumor,Cultured Neoplastic Cell,Cultured Tumor Cell,Neoplastic Cell, Cultured,Tumor Cell, Cultured

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