NDLI: Induction of apoptosis in bone marrow cells after treatment of mice with WR-2721 and gamma-rays: Relationship to the cell cycle

Content Provider	Springer Nature Link
Author	Mazur, L. Augustynek, A. Halicka, H.D. Deptała, A.
Copyright Year	2003
Abstract	Apoptosis and cell proliferation are accepted to be responsible for the maintenance of homeostasis in the hematopoietic system. Understanding of the mechanisms of action of the aminothiols and ionizing radiation on normal hematopoietic cells requires determination of the correlation between apoptotic cell death and cell cycle distribution. The effects of WR-2721 ((S)-2-/3-aminopropylamino/ethylphosphorothioic acid; Amifostine) and 60Co gamma-rays on apoptosis and cell cycle progression in the mouse bone marrow were determined. Adult male Swiss mice were exposed to 6 Gy gamma-rays only, or pretreated with WR-2721, at a dose of 400 mg/kg body weight, 30 min before gamma-irradiation. The laser scanning cytometry APO-BRDUTM assay based on simultaneous analysis of cellular DNA content and the in situ detection of DNA strand breaks was used to identify apoptotic cells and to reveal the cell cycle position of apoptotic and nonapoptotic cells. Temporary changes in the frequency of apoptotic cells with fluorescein isothiocyanate (FITC) labeling of DNA strand breaks, and all bone marrow cells including apoptotic and nonapoptotic ones, whose DNA stained with propidium iodide, were observed in the particular phases of the cell cycle throughout the 96-h period after WR-2721 application and gamma-irradiation. The cell cycle phase specificity of WR-2721 and 60Co gamma-irradiation was shown in terms of induction of apoptosis in bone marrow cells. The patterns of alterations in the frequency of apoptotic cells and all bone marrow cells with respect to their cell cycle position were dependent on the agent(s) applied and the time interval after treatment of mice with WR-2721 and/or gamma-rays. A modulatory, suppressive action of WR-2721 on apoptosis induction and the cell cycle perturbation caused in normal cells of the mouse bone marrow by gamma-rays was found.
Starting Page	13
Ending Page	27
Page Count	15
File Format	PDF
ISSN	07422091
Journal	Cell Biology and Toxicology
Volume Number	19
Issue Number	1
e-ISSN	15736822
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2003-01-01
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Pharmacology/Toxicology Biochemistry Cell Biology
Content Type	Text
Resource Type	Article
Subject	Cell Biology Health, Toxicology and Mutagenesis Toxicology

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