RRC ID 6704
Author Maruo T, Sakamoto H, Iranfar N, Fuller D, Morio T, Urushihara H, Tanaka Y, Maeda M, Loomis WF.
Title Control of cell type proportioning in Dictyostelium discoideum by differentiation-inducing factor as determined by in situ hybridization.
Journal Eukaryot Cell
Abstract We have determined the proportions of the prespore and prestalk regions in Dictyostelium discoideum slugs by in situ hybridization with a large number of prespore- and prestalk-specific genes. Microarrays were used to discover genes expressed in a cell type-specific manner. Fifty-four prespore-specific genes were verified by in situ hybridization, including 18 that had been previously shown to be cell type specific. The 36 new genes more than doubles the number of available prespore markers. At the slug stage, the prespore genes hybridized to cells uniformly in the posterior 80% of wild-type slugs but hybridized to the posterior 90% of slugs lacking the secreted alkylphenone differentiation-inducing factor 1 (DIF-1). There was a compensatory twofold decrease in prestalk cells in DIF-less slugs. Removal of prespore cells resulted in cell type conversion in both wild-type and DIF-less anterior fragments. Thus, DIF-1 appears to act in concert with other processes to establish cell type proportions.
Volume 3(5)
Pages 1241-8
Published 2004-10-1
DOI 10.1128/EC.3.5.1241-1248.2004
PII 3/5/1241
PMID 15470253
PMC PMC522602
MeSH Animals Dictyostelium / cytology* Dictyostelium / genetics* Dictyostelium / growth & development Gene Expression Profiling Gene Expression Regulation, Developmental Genes, Protozoan Hexanones Hydrocarbons, Chlorinated In Situ Hybridization Oligonucleotide Array Sequence Analysis Proteins / genetics Proteins / physiology Protozoan Proteins / genetics Protozoan Proteins / physiology Spores / cytology Spores / genetics
IF 2.992
Times Cited 26
Cellular slime molds