title: Expression and distribution of genes encoding for polyamine-metabolizing enzymes in the different zones of male and female mouse kidneys.
abstract: The role of polyamines in renal physiology is only partially understood. Moreover, most of the data on the enzymes of polyamine metabolism come from studies using whole kidneys. The aim of the present study was to analyze the mRNA abundance of the genes implicated in both the polyamine biosynthetic and catabolic pathways in different renal zones of male and female mice, by means of the quantitative reverse transcription-polymerase chain reaction. Our results indicate that there is an uneven distribution of the different mRNAs studied in the five renal zones: superficial cortex, deep cortex, outer stripe of the outer medulla (OS), inner stripe of the outer medulla (IS), and the inner medulla + papilla (IM). The biosynthetic genes, ornithine decarboxylase (ODC) and spermine synthase, were more expressed in the cortex, whereas the mRNAs of the catabolic genes spermine oxidase (SMO) and diamine oxidase were more abundant in IS and IM. The genes involved in the regulation of polyamine synthesis (AZ1, AZ2 and AZIN1) were expressed in all the renal zones, predominantly in the cortex, while AZIN2 gene was more abundant in the OS. ODC, SMO, spermidine synthase and spermidine/spermine acetyl transferase expression was higher in males than in females. In conclusion, the genes encoding for the polyamine metabolism were specifically and quantitatively distributed along the corticopapillary axis of male and female mouse kidneys, suggesting that their physiological role is essential in defined renal zones and/or nephron segments.
authors.affiliation: Institut de Biologie et Chimie des Protéines, FRE 3310, Dysfonctionnements de l'homéostasie tissulaire et ingénierie thérapeutique, (DyHTIT), 7 passage du Vercors, 69367, Lyon, France. olivier.levillain@univ-lyon1.fr
authors.forename: Olivier
authors.initials: O
authors.lastname: Levillain
authors.forename: Bruno
authors.initials: B
authors.lastname: Ramos-Molina
authors.forename: Fabien
authors.initials: F
authors.lastname: Forcheron
authors.forename: Rafael
authors.initials: R
authors.lastname: Peñafiel
mesh_terms: D000123:Acetyltransferases / Q000235:genetics / Q000378:metabolism; D006631:Amine Oxidase (Copper-Containing) / Q000235:genetics / Q000378:metabolism; D000818:Animals; D002352:Carrier Proteins / Q000235:genetics / Q000378:metabolism; D018797:Cell Cycle Proteins; D003598:Cytoskeletal Proteins; D005260:Female; D015870:Gene Expression; D007668:Kidney / Q000033:anatomy & histology / Q000201:enzymology*; D008297:Male; D051379:Mice; D009928:Organ Specificity; D009955:Ornithine Decarboxylase / Q000235:genetics / Q000378:metabolism; D000587:Oxidoreductases Acting on CH-NH Group Donors / Q000235:genetics / Q000378:metabolism; D011073:Polyamines / Q000378:metabolism*; D011506:Proteins / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics* / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012737:Sex Factors; D011436:Spermidine Synthase / Q000235:genetics / Q000378:metabolism; D013097:Spermine Synthase / Q000235:genetics / Q000378:metabolism; D000097667:Polyamine Oxidase; D000099228:Diamine N-Acetyltransferase
chemical_list: D000123:Acetyltransferases; D006631:Amine Oxidase (Copper-Containing); D002352:Carrier Proteins; D018797:Cell Cycle Proteins; D003598:Cytoskeletal Proteins; D009955:Ornithine Decarboxylase; D000587:Oxidoreductases Acting on CH-NH Group Donors; D011073:Polyamines; D011506:Proteins; D012333:RNA, Messenger; D011436:Spermidine Synthase; D013097:Spermine Synthase; D000097667:Polyamine Oxidase; D000099228:Diamine N-Acetyltransferase; C097241:Cep131 protein, mouse; C549629:antizyme inhibitor 2, mouse; C031017:ornithine decarboxylase antizyme; C039317:ornithine decarboxylase antizyme inhibitor