title: Histological characterization of orphan transporter MCT14 (SLC16A14) shows abundant expression in mouse CNS and kidney.
abstract: MCT14 (SLC16A14) is an orphan member of the monocarboxylate transporter (MCT) family, also known as the SLC16 family of secondary active transmembrane transporters. Available expression data for this transporter is limited, and in this paper we aim to characterize MCT14 with respect to tissue distribution and cellular localization in mouse brain.
  
  
  
  Using qPCR, we found that Slc16a14 mRNA was highly abundant in mouse kidney and moderately in central nervous system, testis, uterus and liver. Using immunohistochemistry and in situ hybridization, we determined that MCT14 was highly expressed in excitatory and inhibitory neurons as well as epithelial cells in the mouse brain. The expression was exclusively localized to the soma of neurons. Furthermore, we showed with our phylogenetic analysis that MCT14 most closely relate to the aromatic amino acid- and thyroid-hormone transporters MCT8 (SLC16A2) and MCT10 (SLC16A10), in addition to the carnitine transporter MCT9 (SLC16A9).
  
  
  
  We provide here the first histological mapping of MCT14 in the brain and our data are consistent with the hypothesis that MCT14 is a neuronal aromatic-amino-acid transporter.
authors.affiliation: Department of Neuroscience, Functional Pharmacology, Uppsala University, 75124, Uppsala, Sweden.
authors.forename: Sahar
authors.initials: S
authors.lastname: Roshanbin
authors.affiliation: Department of Pharmaceutical Biosciences, Molecular Neuropharmacology, Uppsala University, 75124, Uppsala, Sweden.
authors.forename: Frida A
authors.initials: FA
authors.lastname: Lindberg
authors.affiliation: Department of Neuroscience, Functional Pharmacology, Uppsala University, 75124, Uppsala, Sweden.
authors.forename: Emilia
authors.initials: E
authors.lastname: Lekholm
authors.affiliation: Department of Pharmaceutical Biosciences, Molecular Neuropharmacology, Uppsala University, 75124, Uppsala, Sweden.
authors.forename: Mikaela M
authors.initials: MM
authors.lastname: Eriksson
authors.affiliation: Department of Neuroscience, Functional Pharmacology, Uppsala University, 75124, Uppsala, Sweden.
authors.forename: Emelie
authors.initials: E
authors.lastname: Perland
authors.affiliation: Department of Neuroscience, Functional Pharmacology, Uppsala University, 75124, Uppsala, Sweden.
authors.forename: Johan
authors.initials: J
authors.lastname: Åhlund
authors.affiliation: Department of Neuroscience, Functional Pharmacology, Uppsala University, 75124, Uppsala, Sweden.
authors.forename: Amanda
authors.initials: A
authors.lastname: Raine
authors.affiliation: Department of Pharmaceutical Biosciences, Molecular Neuropharmacology, Uppsala University, 75124, Uppsala, Sweden. Robert.Fredriksson@farmbio.se.
authors.forename: Robert
authors.initials: R
authors.lastname: Fredriksson
mesh_terms: D000818:Animals; D015153:Blotting, Western; D001921:Brain / Q000166:cytology / Q000378:metabolism*; D002352:Carrier Proteins / Q000235:genetics / Q000378:metabolism*; D004847:Epithelial Cells / Q000166:cytology / Q000378:metabolism; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D017403:In Situ Hybridization; D007668:Kidney / Q000166:cytology / Q000378:metabolism*; D008099:Liver / Q000166:cytology / Q000378:metabolism; D008297:Male; D051379:Mice; D009474:Neurons / Q000166:cytology / Q000378:metabolism; D016716:PC12 Cells; D010802:Phylogeny; D012333:RNA, Messenger / Q000378:metabolism; D051381:Rats; D060888:Real-Time Polymerase Chain Reaction; D013737:Testis / Q000166:cytology / Q000378:metabolism; D014162:Transfection; D014599:Uterus / Q000166:cytology / Q000378:metabolism
chemical_list: D002352:Carrier Proteins; C000622680:MCT14 protein, mouse; D012333:RNA, Messenger
keywords: Amino acid; Monocarboxylate; Mouse; Transporter