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    Changes of mitochondrial mass in the hemopoietic stem cell line FDCP-mix after treatment with etoposide: a correlative study by multiparameter flow cytometry and confocal and electron microscopy.

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    Authors
    Reipert, Siegfried
    Berry, Jeff
    Hughes, Mike F
    Hickman, J A
    Allen, Terence D
    Affiliation
    Department of Structural Cell Biology, Paterson Institute for Cancer Research & Christie Hospital, Manchester, United Kingdom.
    Issue Date
    1995-12
    
    Metadata
    Show full item record
    Abstract
    FDCP-Mix, a pluripotent murine hemopoietic stem cell line which undergoes typical internucleosomal cleavage of DNA when induced to apoptosis by either drugs or withdrawal of growth factor (interleukin-3) was studied after treatment with the topoisomerase II inhibitor etoposide (0.5-4 microM). An increase in autolytic activity was the major early morphological change within the cytoplasm, with mitochondria as the main target for autolytic digestion. Despite this macroautophagy, thin sections showed a high number of mitochondria, suggesting mitochondrial proliferation as a result of drug treatment. This observation of an increase in the number of mitochondria was confirmed by flow cytometric studies of mitochondrial overall mass. Multiparameter flow cytometry of cells double stained with propidium iodide and nonyl-acridine orange gave an accurate assay for mitochondrial mass in relation to cell cycle stages. The increase in mitochondrial mass was found in all cell cycle stages. The results suggest a drug-induced proliferation of mitochondria separate from the processes involved in the doubling of mitochondrial mass during the cell cycle and a decline of mitochondria in the later stages of apoptosis.
    Citation
    Changes of mitochondrial mass in the hemopoietic stem cell line FDCP-mix after treatment with etoposide: a correlative study by multiparameter flow cytometry and confocal and electron microscopy. 1995, 221 (2):281-8 Exp. Cell Res.
    Journal
    Experimental Cell Research
    URI
    http://hdl.handle.net/10541/97948
    DOI
    10.1006/excr.1995.1376
    PubMed ID
    7493625
    Type
    Article
    Language
    en
    ISSN
    0014-4827
    ae974a485f413a2113503eed53cd6c53
    10.1006/excr.1995.1376
    Scopus Count
    Collections
    All Paterson Institute for Cancer Research

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