Apoptosis and necrosis as distinct cell loss mechanisms in avascular tumour growth

H. M. Byrne, M. A. J. Chaplain

    Research output: Contribution to journalArticle

    Abstract

    During the initial avascular phase of solid tumour growth, it is the balance between cell proliferation and cell loss that determines whether the tumour colony expands or regresses. Experimentalists have identified two distinct mechanisms that contribute to cell loss. These are apoptosis and nicrosis. cell loss due to apoptosis may be riferred to as programmed-cell-death, occurring,for example, when a cell exceeds its natural lifespan. In contrast, cell loss due to necrosis is induced by changes in the cells microenvironment,occurring, for example, in nutrient-depleted regions of the tumour. In this paper we present a mathematical model that describes the growth of an avascular tumour which compuises a centual core of necrotic cells, surrounded by an outer annulus of puoliferating cells. The model distinguishes between apoptisis and necrosis. Using a combination of numerical and analytical techniques we present results which suggest how the relative importance of apoptisis and necrosis changes as the tumour develops. The implications of these results are discussed briefly.
    Original languageEnglish
    Pages (from-to)223-235
    Number of pages13
    JournalJournal of Theoretical Medicine
    Volume1
    Issue number3
    DOIs
    Publication statusPublished - 1998

    Fingerprint

    Tumors
    Necrosis
    Apoptosis
    Growth
    Neoplasms
    Cell proliferation
    Cell death
    Cellular Microenvironment
    Nutrients
    Mathematical models
    Cell Death
    Theoretical Models
    Cell Proliferation
    Food

    Keywords

    • Cell loss
    • Avascular tumour
    • Micronenvironment
    • Apoptosis

    Cite this

    Byrne, H. M. ; Chaplain, M. A. J. / Apoptosis and necrosis as distinct cell loss mechanisms in avascular tumour growth. In: Journal of Theoretical Medicine. 1998 ; Vol. 1, No. 3. pp. 223-235.
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    Apoptosis and necrosis as distinct cell loss mechanisms in avascular tumour growth. / Byrne, H. M.; Chaplain, M. A. J.

    In: Journal of Theoretical Medicine, Vol. 1, No. 3, 1998, p. 223-235.

    Research output: Contribution to journalArticle

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    T1 - Apoptosis and necrosis as distinct cell loss mechanisms in avascular tumour growth

    AU - Byrne, H. M.

    AU - Chaplain, M. A. J.

    N1 - dc.publisher: Taylor & Francis

    PY - 1998

    Y1 - 1998

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    AB - During the initial avascular phase of solid tumour growth, it is the balance between cell proliferation and cell loss that determines whether the tumour colony expands or regresses. Experimentalists have identified two distinct mechanisms that contribute to cell loss. These are apoptosis and nicrosis. cell loss due to apoptosis may be riferred to as programmed-cell-death, occurring,for example, when a cell exceeds its natural lifespan. In contrast, cell loss due to necrosis is induced by changes in the cells microenvironment,occurring, for example, in nutrient-depleted regions of the tumour. In this paper we present a mathematical model that describes the growth of an avascular tumour which compuises a centual core of necrotic cells, surrounded by an outer annulus of puoliferating cells. The model distinguishes between apoptisis and necrosis. Using a combination of numerical and analytical techniques we present results which suggest how the relative importance of apoptisis and necrosis changes as the tumour develops. The implications of these results are discussed briefly.

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