Abstract:
:This report presents a simple model that describes the motion of a single Dictyostelium discoideum cell exposed to a traveling wave of cyclic adenosine monophosphate (cAMP). The model incorporates two types of responses to stimulation by cAMP: the changes in the polarity and motility of the cell. The periodic change in motility is assumed to be induced by periodic cAMP stimulation on the basis of previous experimental studies. Consequently, the net migration of the cell occurs in a particular direction with respect to wave propagation, which explains the migration of D. discoideum cells in aggregation. The wave period and the difference between the two response times are important parameters that determine the direction of migration. The theoretical prediction compared with experiments presented in another study. The transition from the single-cell state of the population of D. discoideum cells to the aggregation state is understood to be a specific example of spontaneous breakage of symmetry in biology.
journal_name
Phys Bioljournal_title
Physical biologyauthors
Ishiwata R,Iwasa Mdoi
10.1088/1478-3975/12/2/026004subject
Has Abstractpub_date
2015-03-19 00:00:00pages
026004issue
2eissn
1478-3967issn
1478-3975journal_volume
12pub_type
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