Development, The Company of Biologists

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13/11/2013
Development, The Company of Biologists

Development, The Company of Biologists, November 2013

COUP-TFI controls activity-dependent tyrosine hydroxylase expression in adult dopaminergic olfactory bulb interneurons

Serena Bovetti, Sara Bonzano, Donatella Garzotto, Serena Gea Giannelli, Angelo Iannielli
Maria Armentano, Michèle Studer and Silvia De Marchis

COUP-TFI is an orphan nuclear receptor acting as a strong transcriptional regulator in different aspects of forebrain embryonic development. In this study, we investigated COUP-TFI expression and function in the mouse olfactory bulb (OB), a highly plastic telencephalic region in which continuous integration of newly generated inhibitory interneurons occurs throughout life. OB interneurons belong to different populations that originate from distinct progenitor lineages. Here, we show that COUP-TFI is highly expressed in tyrosine hydroxylase (TH)-positive dopaminergic interneurons in the adult OB glomerular layer (GL).

We found that odour deprivation, which is known to downregulate TH expression in the OB, also downregulates COUP-TFI in dopaminergic cells, indicating a possible correlation between TH- and COUP-TFI-activity-dependent action. Moreover, we demonstrate that conditional inactivation of COUP-TFI in the EMX1 lineage results in a significant reduction of both TH and ZIF268 expression in the GL.

Finally, lentiviral vector-mediated COUP-TFI deletion in adult-generated interneurons confirmed that COUP-TFI acts cell-autonomously in the control of TH and ZIF268 expression. These data indicate that COUP-TFI regulates TH expression in OB cells through an activity-dependent mechanism involving ZIF268 induction and strongly argue for a maintenance rather than establishment function of COUP-TFI in dopaminergic commitment.

Our study reveals a previously unknown role for COUP-TFI in the adult brain as a key regulator in the control of sensory-dependent plasticity in olfactory dopaminergic neurons.

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Agenda

14 novembre 2019

BraYn 2019 - dal 14 al 16 novembre a Milano

Fino al 31 luglio è possibile sottomettere gli abstract per la seconda conferenza annuale dei giovani neuroscienziati, in programma a Milano dal 14 al 16 novembre 2019.

Sportello LESIONI SPINALI

Paziente tetraplegico operato al CTO di Torino torna a usare le mani

Una notizia che abbiamo letto tutti di recente sui giornali. Noi del NICO abbiamo la fortuna di collaborare da anni con il dott. Bruno Battiston e il prof. Diego Garbossa - i chirurghi che hanno svolto l'operazione - e ci siamo fatti spiegare bene in cosa consiste l’intervento, quale era la situazione del paziente e quali saranno i possibili risultati. 
Tutto questo al di là delle semplificazioni e dei titoli roboanti dei giornali, comprensibilmente utilizzati per attirare l’attenzione dei lettori.

11 giugno 2019