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  • Zhang, XiaoqunKarolinska Institutet,Karolinska Univ Hosp, Karolinska Inst, Ctr Mol Med L8 01, Sect Translat Neuropharmacol,Dept Clin Neurosci, Stockholm, Sweden. (författare)

Striatal Tyrosine Hydroxylase Is Stimulated via TAAR1 by 3-Iodothyronamine, But Not by Tyramine or beta-Phenylethylamine

  • Artikel/kapitelEngelska2018

Förlag, utgivningsår, omfång ...

  • 2018-03-01
  • FRONTIERS MEDIA SA,2018
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-350493
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-350493URI
  • https://doi.org/10.3389/fphar.2018.00166DOI
  • http://kipublications.ki.se/Default.aspx?queryparsed=id:137741385URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • The trace amine-associated receptor 1 (TAAR1) is expressed by dopaminergic neurons, but the precise influence of trace amines upon their functional activity remains to be fully characterized. Here, we examined the regulation of tyrosine hydroxylase (TH) by tyramine and beta-phenylethylamine (beta-PEA) compared to 3-iodothyronamine (T(1)AM). Immunoblotting and amperometry were performed in dorsal striatal slices from wildtype (WT) and TAAR1 knockout (KO) mice. T(1)AM increased TH phosphorylation at both Ser(19) and Ser(40), actions that should promote functional activity of TH. Indeed, HPLC data revealed higher rates of L-dihydroxyphenylalanine (DOPA) accumulation in WT animals treated with T(1)AM after the administration of a DOPA decarboxylase inhibitor. These effects were abolished both in TAAR1 KO mice and by the TAAR1 antagonist, EPPTB. Further, they were specific inasmuch as Ser(845) phosphorylation of the post-synaptic GluA1 AMPAR subunit was unaffected. The effects of T1AM on TH phosphorylation at both Ser(19) (CamKII-targeted), and Ser40 (PKA-phosphorylated) were inhibited by KN-92 and H-89, inhibitors of CamKII and PKA respectively. Conversely, there was no effect of an EPAC analog, 8-CPT-2Me-cAMP, on TH phosphorylation. In line with these data, T(1)AM increased evoked striatal dopamine release in TAAR1 WT mice, an action blunted in TAAR1 KO mice and by EPPTB. Mass spectrometry imaging revealed no endogenous T(1)AM in the brain, but detected T(1)AM in several brain areas upon systemic administration in both WT and TAAR1 KO mice. In contrast to T1AM, tyramine decreased the phosphorylation of Ser40-TH, while increasing Ser(845)-GluA1 phosphorylation, actions that were not blocked in TAAR1 KO mice. Likewise, beta-PEA reduced Ser(40)-TH and tended to promote Ser845-GluA1 phosphorylation. The D-1 receptor antagonist SCH23390 blocked tyramine-induced Ser(845)-GluA1 phosphorylation, but had no effect on tyramine-or beta-PEA-induced Ser(40)-TH phosphorylation. In conclusion, by intracellular cascades involving CaMKII and PKA, T(1)AM, but not tyramine and beta-PEA, acts via TAAR1 to promote the phosphorylation and functional activity of TH in the dorsal striatum, supporting a modulatory influence on dopamine transmission.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Mantas, IoannisKarolinska Institutet,Karolinska Univ Hosp, Karolinska Inst, Ctr Mol Med L8 01, Sect Translat Neuropharmacol,Dept Clin Neurosci, Stockholm, Sweden. (författare)
  • Alvarsson, AlexandraKarolinska Univ Hosp, Karolinska Inst, Ctr Mol Med L8 01, Sect Translat Neuropharmacol,Dept Clin Neurosci, Stockholm, Sweden. (författare)
  • Yoshitake, TakashiKarolinska Institutet,Karolinska Inst, Dept Physiol & Pharmacol, Sect Pharmacol Neurochem, Solna, Sweden. (författare)
  • Shariatgorji, MohammadrezaUppsala universitet,Institutionen för farmaceutisk biovetenskap,Science for Life Laboratory, SciLifeLab,Biomolecular Mass Spectrometry Imaging, National Resource for Mass Spectrometry Imaging, Uppsala, Sweden(Swepub:uu)mohsh560 (författare)
  • Pereira, MarcelaKarolinska Institutet,Karolinska Univ Hosp, Karolinska Inst, Ctr Mol Med L8 01, Sect Translat Neuropharmacol,Dept Clin Neurosci, Stockholm, Sweden. (författare)
  • Nilsson, AnnaUppsala universitet,Institutionen för farmaceutisk biovetenskap,Science for Life Laboratory, SciLifeLab,Biomol Mass Spectrometry Imaging, Natl Resource Mass Spectrometry Imaging, Uppsala, Sweden.(Swepub:uu)annil134 (författare)
  • Kehr, JanKarolinska Institutet,Karolinska Inst, Dept Physiol & Pharmacol, Sect Pharmacol Neurochem, Solna, Sweden. (författare)
  • Andrén, Per E.Uppsala universitet,Institutionen för farmaceutisk biovetenskap,Science for Life Laboratory, SciLifeLab,Biomol Mass Spectrometry Imaging, Natl Resource Mass Spectrometry Imaging, Uppsala, Sweden.(Swepub:uu)perandre (författare)
  • Millan, Mark J.Ctr Rech Croissy, Ctr Therapeut Innovat CNS, Inst Rech Servier, Paris, France. (författare)
  • Chergui, KarimaKarolinska Institutet,Karolinska Inst, Dept Physiol & Pharmacol, Sect Mol Neurophysiol, Solna, Sweden. (författare)
  • Svenningsson, PerKarolinska Institutet,Karolinska Univ Hosp, Karolinska Inst, Ctr Mol Med L8 01, Sect Translat Neuropharmacol,Dept Clin Neurosci, Stockholm, Sweden. (författare)
  • Karolinska InstitutetKarolinska Univ Hosp, Karolinska Inst, Ctr Mol Med L8 01, Sect Translat Neuropharmacol,Dept Clin Neurosci, Stockholm, Sweden. (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Frontiers in Pharmacology: FRONTIERS MEDIA SA91663-9812

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