title: Molecular cloning and tissue distribution of microsomal-1 and cytosolic prostaglandin E synthases in macaque.
abstract: Prostaglandins derived from arachidonic acid are involved in a wide variety of physiological and pathological processes. The primary enzymes involved in the production of PGE2 from arachidonic acid are cyclooxygenases and prostaglandin E synthases. These enzymes have been identified in human, but only partially in the monkey where microsomal PGES-1 and cytosolic PGES have not been characterized. The present study was undertaken to clone these enzymes and to study their tissue distribution, along with mPGES-2. The coding sequence of Macaque mPGES-1 is 98% homologous to human mPGES-1 at the nucleic acid level and the deduced amino acid sequence has 98% homology with the human protein. The Macaque cPGES cDNA is more than 99% homologous to the human and the deduced amino acids sequence is identical to that of the human cPGES. By Northern blot analysis, we found that mPGES-2 and cPGES mRNA were expressed in the endometrium, myometrium, ovary and oviduct, albeit at different levels, while mPGES-1 mRNA was detected at a weak level, mainly in the oviduct. Western Blot analysis revealed that mPGES-2, mPGES-1 and cPGES proteins were present in all tissues tested. These results suggest that production of PGE2 in Macaque may involve more than one PGES and that further studies will be needed to fully understand the conditions under which each PGES contributes to PGE2 production.
authors.affiliation: Unité de Recherche en Ontogénie et Reproduction, Centre Hospitalier Universitaire de Québec, (CHUL), Centre de Recherche en Biologie de la Reproduction (CRBR), Université Laval, Ste-Foy, Que., Canada G1V 4G2.
authors.forename: Julie
authors.initials: J
authors.lastname: Parent
authors.forename: Pierre
authors.initials: P
authors.lastname: Chapdelaine
authors.forename: Michel A
authors.initials: MA
authors.lastname: Fortier
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D015153:Blotting, Western; D003001:Cloning, Molecular; D003600:Cytosol / Q000201:enzymology*; D018076:DNA, Complementary; D005260:Female; D006801:Humans; D019746:Intramolecular Oxidoreductases / Q000235:genetics / Q000378:metabolism*; D008252:Macaca fascicularis; D008969:Molecular Sequence Data; D000071876:Prostaglandin-E Synthases; D017386:Sequence Homology, Amino Acid; D014018:Tissue Distribution
chemical_list: D018076:DNA, Complementary; D019746:Intramolecular Oxidoreductases; C000605862:PTGES protein, human; C000605863:PTGES2 protein, human; D000071876:Prostaglandin-E Synthases