Cited by 285Thyroid Disorders and TreatmentsDrug Transport and Resistance MechanismsChemical Analysis and Environmental Impact

Effective cellular uptake and efflux of thyroid hormone by human monocarboxylate transporter 10

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Friesema, Edith C. H., Jansen, Jurgen, Jachtenberg, Jan-willem, Visser, W. Edward, Kester, Monique H. A., Visser, Theo J.·2008·Molecular Endocrinology

Abstract

Cellular entry of thyroid hormone is mediated by plasma membrane transporters, among others a T-type (aromatic) amino acid transporter. Monocarboxylate transporter 10 (MCT10) has been reported to transport aromatic amino acids but not iodothyronines. Within the MCT family, MCT10 is most homologous to MCT8, which is a very important iodothyronine transporter but does not transport amino acids. In view of this paradox, we decided to reinvestigate the possible transport of thyroid hormone by human (h) MCT10 in comparison with hMCT8. Transfection of COS1 cells with hMCT10 cDNA resulted in 1) the production of an approximately 55 kDa protein located to the plasma membrane as shown by immunoblotting and confocal microscopy, 2) a strong increase in the affinity labeling of intracellular type I deiodinase by N-bromoacetyl-[125I]T3, 3) a marked stimulation of cellular T4 and, particularly, T3 uptake, 4) a significant inhibition of T3 uptake by phenylalanine, tyrosine, and tryptophan of 12.5%, 22.2%, and 51.4%, respectively, and 5) a marked increase in the intracellular deiodination of T4 and T3 by different deiodinases. Cotransfection studies using the cytosolic thyroid hormone-binding protein μ-crystallin (CRYM) indicated that hMCT10 facilitates both cellular uptake and efflux of T4 and T3. In the absence of CRYM, hMCT10 and hMCT8 increased T3 uptake after 5 min incubation up to 4.0- and 1.9-fold, and in the presence of CRYM up to 6.9- and 5.8-fold, respectively. hMCT10 was less active toward T4 than hMCT8. These findings establish that hMCT10 is at least as active a thyroid hormone transporter as hMCT8, and that both transporters facilitate iodothyronine uptake as well as efflux.

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  1. Jansen J, Friesema EC, Kester MH, Milici C, Reeser M, Gruters A, Barrett TG, Mancilla EE, Svensson J, Wemeau 1368 Mol Endocrinol, June 2008, 22(6):1357-1369
  2. Namba N, Etani Y, Kitaoka T, Nakamoto Y, Nakacho M, Bessho K, Miyoshi Y, Mushiake S, Mohri I, Arai H, Taniike M, Ozono K 25 September 2007 Clinical phenotype and endocrinological investigations in a patient with a muta- tion in the MCT8 thyroid hormone transporter. Eur J Pe- diatr 10.1007/s00431-007-0589-6 · DOI

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Authors
Friesema, E. C. H., Jansen, J., Jachtenberg, J.-W., Visser, W. E., Kester, M. H. A., & Visser, T. J.
Affiliations
Erasmus MC (NL)
Corresponding author
Visser, Theo J.
Venue
Molecular Endocrinology
Published
2008-06-01
Volume
22
Issue
6
Pages
1357-1369
ISSN
  • 0888-8809 (ISSN-L)
  • 1944-9917
OpenAlex
W2102129489
Cited by
285
References
4
Citations by year
2026: 9 · 2025: 15 · 2024: 10 · 2023: 6 · 2022: 11 · 2021: 11 · 2020: 13 · 2019: 18 · 2018: 14 · 2017: 19 · 2016: 16 · 2015: 14 · 2014: 18 · 2013: 25 · 2012: 16
FWCI
16.14
Type
journal article
Language
en
Open access
Locations
  • Molecular Endocrinology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • EUR Research Repository (Erasmus University Rotterdam) (publishedVersion)
  • EUR Research Repository (Erasmus University Rotterdam) (submittedVersion)
  • RePub (Erasmus University Rotterdam) (submittedVersion, other-oa)
  • RePub (Erasmus University Rotterdam) (submittedVersion)
Funders
  • Fondation pour la Recherche Médicale
  • Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Chemical Analysis and Environmental Impact
Keywords
thyroid hormone transport, MCT10, MCT8, type I deiodinase, type 2 deiodinase, CRYM, thyroxine, triiodothyronine, phenylalanine, tyrosine, tryptophan
MeSH terms
mu-Crystallins, Amino Acid Sequence, Animals, Biological Transport, Cells, Cultured, Chlorocebus aethiops, Efficiency, Humans, Molecular Sequence Data, Phylogeny, Thyroid Hormones, Time Factors, Transfection, Sequence Homology, Amino Acid, COS Cells, Amino Acid Transport Systems, Neutral, Monocarboxylic Acid Transporters, Symporters

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