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Kida, Yuya, Pan, Kai, Kuwayama, Hidekazu, (2019) ' Some chemotactic mutants can be progress through development in chimeric populations. ' Differentiation 105 71-79
Abstract:Cell migration in response to morphogen gradients affects morphogenesis. Chemotaxis towards adenosine 3', 5'-monophosphate (cAMP) is essential for the early stage of morphogenesis in the slime mold Dictyostelium discoideum. Here, we show that D. discoideum completes morphogenesis without cAMP-chemotaxis-dependent cell migration. The extracellular cAMP gradient is believed to cause cells to form a slug-shaped multicellular structure and fruiting body. The cAMP receptor, cAR1, was not expressed at the cell surface during these stages, correlating with reduced chemotactic activity. G?-null cells expressing temperature sensitive G? are unable to generate extracellular cAMP (Jin et al., 1998) and thus unable to aggregate and exhibit proper morphogenesis under restrictive temperature. However, when mixed with wild type cells ts-G? expressing g?-null cells normally aggregated and exhibited normal morphogenesis under restrictive temperature. Furthermore, cells migrated after aggregation in a mixture containing wild-type cells. KI-5 cells, which do not show aggregation or morphogenesis, spontaneously migrated to a transplanted wild-type tip and underwent normal morphogenesis and cell differentiation; this was not observed in cells lacking tgrB1and tgrC1 cells adhesion molecules. Thus, cAMP gradient-dependent cell migration may not be required for multicellular pattern formation in late Dictyostelium development.
Status: aheadofprint Type: Journal article Source: PUBMED PubMed ID: 30797173

Genes addressed in this paper
carA-1 carA-2 carC gpbA tgrB1 tgrC1
Topics in this paper
Strains/Constructs X X X X

Cellular Location X X





Chemotaxis/Motility X X