Modelling cell movement, cell differentiation, cell sorting and proportion regulation in Dictyostelium discoideum aggregations
نویسندگان
چکیده
منابع مشابه
Modelling cell movement, cell differentiation, cell sorting and proportion regulation in Dictyostelium discoideum aggregations.
Understanding the mechanisms that control tissue morphogenesis and homeostasis is a central goal not only in developmental biology but also has great relevance for our understanding of various diseases, including cancer. A model organism that is widely used to study the control of tissue morphogenesis and proportioning is the Dictyostelium discoideum. While there are mathematical models describ...
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We made mixed mounds of vitally stained prestalk cells and unstained prespore cells, from Dictyostelium discoideum (Dd), and exposed these to external 3',5'-cyclic-AMP (c-AMP) sources. We show that prestalk cells will sort out by moving directionally toward c-AMP sources held at less than 10(-5) M c-AMP. This is evidence for cell sorting via chemotaxis. We present arguments that the natural cel...
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When Dictyostelium cells are induced to develop between a coverslip and a layer of agarose, they aggregate normally into groups containing up to a thousand cells but are then constrained to form disks only a few cells thick that appear to be equivalent to the three-dimensional mounds formed on top of agarose. Such vertically restricted aggregates frequently develop into elongated motile structu...
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Synchronized cells of the cellular slime mould Dictyostelium discoideum were prepared by mitotic wash-off. Cell counts and DNA synthesis measurements indicated a high degree of synchrony. Cells from each phase of the cell cycle were fluorescently labelled and mixed with unlabelled asynchronous cells. Cells that were in S-phase and very early G2 at the onset of starvation demonstrated a strong t...
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During the development of Dictyostelium discoideum single cells aggregate to form a multicellular organism. The change from the single cell state to multicellularity is mediated by chemotactic cell movement and intercellular adhesion. Dictyostelium represents a side branch in the evolution of multicellular organization in eukaryotes. Therefore, the general importance of any work done in Dictyos...
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ژورنال
عنوان ژورنال: Journal of Theoretical Biology
سال: 2015
ISSN: 0022-5193
DOI: 10.1016/j.jtbi.2015.01.042