Reference Report

Reference
Citation	Park, S.K., George, R., Cai, Y., Chang, H.Y., Krantz, D.E., Friggi-Grelin, F., Birman, S., Hirsh, J. (2006). Cell-type-specific limitation on in vivo serotonin storage following ectopic expression of the Drosophila serotonin transporter, dSERT. J. Neurobiol. 66(5): 452--462. (Export to RIS)
FlyBase ID	FBrf0191029
Publication Type	Research paper
PubMed ID	16470720
PubMed Abstract	The synaptic machinery for neurotransmitter storage is cell-type specific. Although most elements of biosynthesis and transport have been identified, it remains unclear whether additional factors may be required to maintain this specificity. The Drosophila serotonin transporter (dSERT) is normally expressed exclusively in serotonin (5-HT) neurons in the CNS. Here we examine the effects of ectopic transcriptional expression of dSERT in the Drosophila larval CNS. We find a surprising limitation on 5-HT storage following ectopic expression of dSERT and green fluorescence protein-tagged dSERT (GFP-dSERT). When dSERT transcription is driven ectopically in the CNS, 5-HT is detectable only in 5-HT, dopamine (DA), and a very limited number of additional neurons. Addition of exogenous 5-HT does not dramatically broaden neuronal storage sites, so this limitation is only partly due to restricted intercellular diffusion of 5-HT. Furthermore, this limitation is not due to gross mislocalization of dSERT, because cells lacking or containing 5-HT show similar levels and subcellular distribution of GFP-dSERT protein, nor is it due to lack of the vesicular transporter, dVMAT. These data suggest that a small number of neurons selectively express factor(s) required for 5-HT storage, and potentially for function of dSERT.
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Language of Publication	English
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Publication Type	Journal
Abbreviation	J. Neurobiol.
Title	Journal of Neurobiology
Publication Year	1969-
ISBN/ISSN	0022-3034
Data from Reference
Alleles (9)
	Avic\GFP^Scer\UAS.cYa Scer\GAL4^Act5C.PI Scer\GAL4^Ddc.PL Scer\GAL4^elav-C155 Scer\GAL4^ple.PF SerT^Scer\UAS.cPa SerT^{Scer\UAS.T:Avic\GFP-EGFP} T:Avic\GFP^EGFP Vmat^{Scer\UAS.Ex.T:Ivir\HA1}
Constructs (7)
	P{Act5C-GAL4} P{Ddc-GAL4.L} P{ple-GAL4.F} P{UAS-EGFP.SerT} P{UAS-GFP.Y} P{UAS-SerT.P} P{UAS-Vmat-A.Ex}
Genes (5)
	Avic\GFP Ddc Scer\GAL4 SerT Vmat
Insertions (2)
	P{GawB}elav^C155 P{UAS-GFP.Y}B1
Natural transposons (1)
	P-element