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RESEARCH PRODUCT
Iron Induces Proliferation and Morphogenesis in Primmorphs from the Marine SpongeSuberites domuncula
Renato BatelVladislav A. GrebenjukIsabel M. MüllerAnatoli KraskoRenate SteffenWerner E. G. M�llerHeinz C. Schrödersubject
inorganic chemicalsIronMolecular Sequence DataMorphogenesisFluorescent Antibody TechniqueSeptinModels BiologicalPolymerase Chain ReactionFungal ProteinsSponge spiculeGene expressionGeneticsAnimalsHistidineAmino Acid SequenceReceptors ImmunologicScavenger receptorMolecular BiologyPhylogenyReceptors LipoproteinReceptors ScavengerSequence Homology Amino AcidbiologyEcologySilicatesMembrane ProteinsDNACell BiologyGeneral MedicineScavenger Receptors Class BBlotting Northernbiology.organism_classificationCathepsinsRecombinant ProteinsPoriferaCell biologySuberites domunculaFerritinSpongeFerritinsbiology.proteinCell Divisiondescription
Dissociated cells from marine demosponges retain their proliferation capacity if they are allowed to form special aggregates, the primmorphs. On the basis of incorporation studies and septin gene expression, we show that Fe3+ ions are required for the proliferation of cells in primmorphs from Suberites domuncula. In parallel, Fe3+ induced the expression of ferritin and strongly stimulated the synthesis of spicules. This result is supported by the finding that the enzymatic activity of silicatein, converting organosilicon to silicic acid, depends on Fe3+. Moreover, the expression of a scavenger receptor molecule, possibly involved in the morphology of spicules, depends on the presence of Fe3+. We conclude that iron is an essential factor in proliferative and morphogenetic processes in primmorphs.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-03-07 | DNA and Cell Biology |