NDLI: Prespore cell inducing factor, ψ factor, controls both prestalk and prespore gene expression in Dictyostelium development

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Prespore cell inducing factor, ψ factor, controls both prestalk and prespore gene expression in Dictyostelium development

Content Provider	Scilit
Author	Yamada, Yoko Minamisawa, Hiroshi Fukuzawa, Masashi Kawata, Takefumi Oohata, Akiko A.
Copyright Year	2010
Description	Journal: Development, Growth & Differentiation Prespore cell-inducing (psi, psi) factor (PsiA), encoded by the psiA gene of Dictyostelium, is a secreted signal glycoprotein that induces prespore cell differentiation when added to monolayer cultures. In situ hybridization during normal development showed that the psiA gene is highly expressed in scattered cells at the mound stage and in prespore cells at the onset of culmination. The conventional prespore-cell marker genes, cotC and pspA, were expressed normally in psiA(-) and psiA overexpressing strains. Expressions of rnrB and cudA are repressed in the prestalk cells of a wild type slug to render prespore specific pattern. However, a promoter-reporter fusion gene, rnrB:lacZ, showed an ectopic expression in the prestalk cells of the psiA(-) strain while cudA(psp):lacZ did so in those of the psiA overexpressing strain. Overexpression of psiA delayed expression of the prestalk specific gene, ecmB, during development, while knocking out psiA promoted its expression. In addition, overexpression inhibited DIF-1-induced stalk formation in monolayer cultures. Together with the known prespore inducing activity, the results indicate that PsiA regulates both prespore and prestalk/stalk cell differentiation. These results indicate that PsiA is also involved in prestalk cell differentiation.
Related Links	http://onlinelibrary.wiley.com/doi/10.1111/j.1440-169X.2010.01177.x/pdf
Ending Page	383
Page Count	7
Starting Page	377
e-ISSN	1440169X
DOI	10.1111/j.1440-169x.2010.01177.x
Journal	Development, Growth & Differentiation
Issue Number	4
Volume Number	52
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2010-04-26
Access Restriction	Open
Subject Keyword	Journal: Development, Growth & Differentiation Developmental Biology Cell‐type Differentiation Dictyostelium Discoideum Extracellular Signal Growth Factor Ψ Factor
Content Type	Text
Resource Type	Article

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Prespore cell inducing factor, psi factor, controls both prestalk and prespore gene expression in Dictyostelium development.

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Prespore cell inducing factor, ψ factor, controls both prestalk and prespore gene expression in Dictyostelium development

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