TITLE

Increased Gene Expression of a Cytokine-Related Molecule and Profilin after Activation of Suberites domuncula Cells with Xenogeneic Sponge Molecule(s)

AUTHOR(S)
Muller, Werner E.G.; Perovic, Sanja; Wilkesman, Jeff; Kruse, Michael; Muller, Isabel M.; Batel, Renato
PUB. DATE
December 1999
SOURCE
DNA & Cell Biology;Dec99, Vol. 18 Issue 12, p885
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Porifera (sponges) constitute the lowest metazoan phylum. Experiments examined whether sponges can recognize self/nonself molecules. Cells from the marine sponge Suberites domuncula were incubated with membranes from either S. domuncula or another marine sponge, Geodia cydonium, as well as with recombinant alpha-integrin from G. cydonium. The cells responded immediately with a rise of intracellular Ca[sup 2+] ([Ca[sup 2+][sub i]]) if they were treated with membranes from G. cydonium but not after treatment by those from S. domuncula. This change of [Ca[sup 2+][sub i]] was also recorded with G. cydonium alpha-integrin. In parallel, the expression of two genes was strongly upregulated; one codes for a cytokine-related molecule, pre-B-cell colony-enhancing factor, and the other for profilin. These genes have previously been found to be highly expressed in human or echinoderm cells in the presence of xenogeneic proteins. Our data support the hypothesis that a primordial immune response system is present in sponges.
ACCESSION #
6463005

 

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