Cited by 303Neurobiology and Insect Physiology ResearchNeuroscience and Neuropharmacology ResearchAxon Guidance and Neuronal Signaling

Transsynaptic mapping of second-order taste neurons in flies by trans-Tango

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Talay, Mustafa, Richman, Ethan B., Snell, Nathaniel J., Hartmann, Griffin G., Fisher, John D., Sorkaç, Altar, Santoyo, Juan F., Chou-Freed, Cambria +4 more·2017·Neuron

Abstract

Mapping neural circuits across defined synapses is essential for understanding brain function. Here we describe trans-Tango, a technique for anterograde transsynaptic circuit tracing and manipulation. At the core of trans-Tango is a synthetic signaling pathway that is introduced into all neurons in the animal. This pathway converts receptor activation at the cell surface into reporter expression through site-specific proteolysis. Specific labeling is achieved by presenting a tethered ligand at the synapses of genetically defined neurons, thereby activating the pathway in their postsynaptic partners and providing genetic access to these neurons. We first validated trans-Tango in the Drosophila olfactory system and then implemented it in the gustatory system, where projections beyond the first-order receptor neurons are not fully characterized. We identified putative second-order neurons within the sweet circuit that include projection neurons targeting known neuromodulation centers in the brain. These experiments establish trans-Tango as a flexible platform for transsynaptic circuit analysis.

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Authors
Talay, M., Richman, E. B., Snell, N. J., Hartmann, G. G., Fisher, J. D., Sorkaç, A., Santoyo, J. F., Chou-Freed, C., Nair, N., Johnson, M., Szymanski, J. R., & Barnea, G.
Affiliations
Brown University (US)
Corresponding author
Barnea, Gilad
Venue
Neuron
Publisher
Elsevier BV
Published
2017-11
Volume
96
Issue
4
Pages
783-795.e4
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2765562046
Cited by
301
References
82
Citations by year
2026: 26 · 2025: 31 · 2024: 53 · 2023: 39 · 2022: 35 · 2021: 40 · 2020: 38 · 2019: 18 · 2018: 20 · 2017: 1
FWCI
10.44
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIH (R21DCO14333, R01MH086920, R01MH105368, R01DC013561)
  • Brown University: BIBS Innovation Award
  • OVPR Salomon and Seed Awards
  • Pew Charitable Trus
  • Suna & İnan Kıraç Foundation
  • BIBS
  • Karen T. Romer UTRA (DGE1058262)
  • National Science Foundation Graduate Research Fellowship Program
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
Keywords
gustatory system, Drosophila, site-specific proteolysis, tethered ligand, projection neurons, neuromodulation, olfactory system, neural circuit mapping
MeSH terms
Animals, Drosophila, Neural Pathways, Neurons, Olfactory Pathways, Animals, Genetically Modified, Taste Perception, Neuroanatomical Tract-Tracing Techniques

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