6533b839fe1ef96bd12a5b54

RESEARCH PRODUCT

Ciona intestinalis peroxinectin is a novel component of the peroxidase–cyclooxygenase gene superfamily upregulated by LPS

Daniela ParrinelloMatteo CammarataMaria Antonietta SanfratelloAiti VizziniValentina ManganoNicolò Parrinello

subject

LipopolysaccharidesModels MolecularHemocytesLPSAmino Acid MotifsMolecular Sequence DataPeroxinectinImmunologyIntegrinSettore BIO/05 - ZoologiaChordatePeroxinectin;Peroxidase;Inflammation;LPS;Ciona intestinalisAnimalsCiona intestinalisAmino Acid SequenceRNA MessengerCell adhesionPhylogenyPeroxidaseInflammationRegulation of gene expressionSequence Homology Amino AcidbiologyCell adhesion moleculeAnimal Structuresbiology.organism_classificationMolecular biologyImmunity InnateProtein Structure TertiaryCiona intestinalisGene Expression RegulationPeroxidasesOrgan SpecificityMyeloperoxidaseembryonic structuresImmunologybiology.proteinCell Adhesion MoleculesDevelopmental BiologyEndostyle

description

Peroxinectins function as hemoperoxidase and cell adhesion factor involved in invertebrate immune reaction. In this study, the ascidian (Ciona intestinalis) peroxinectin gene (CiPxt) and its expression during the inflammatory response have been examined. CiPxt is a new member of the peroxidase-cyclooxygenase gene superfamily that contains both the peroxidase domain and the integrin KGD (Lys-Gly-Asp) binding motif. A phylogenetic tree showed that CiPxt is very close to the chordate group and appears to be the outgroup of mammalian MPO, EPO and TPO clades. The CiPxt molecular structure model resulted superimposable to the human myeloperoxidase. The CiPxt mRNA expression is upregulated by LPS inoculation suggesting it is involved in C. intestinalis inflammatory response. The CiPxt was expressed in hemocytes (compartment/morula cells), vessel epithelium, and unilocular refractile granulocytes populating the inflamed tunic matrix and in the zones 7, 8 and 9 of the endostyle, a special pharynx organs homolog to the vertebrate thyroid gland.

yearjournalcountryeditionlanguage
2013-04-03Developmental & Comparative Immunology
https://doi.org/10.1016/j.dci.2013.03.015