Colocalization of different neurotransmitter transporters on synaptic vesicles 
is sparse except for VGLUT1 and ZnT3

Upmanyu, N.; Jin, J.; Emde, H. von der; Ganzella, M.; Bösche, L.; Malviya, V. N.; Zhuleku, E.; Politi, A. Z.; Ninov, M.; Silbern, I.; Leutenegger, M.; Urlaub, H.; Riedel, D.; Preobraschenski, J.; Milosevic, I.; Hell, S. W.; Jahn, R.; Sambandan, S.

doi:10.1016/j.neuron.2022.02.008

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Colocalization of different neurotransmitter transporters on synaptic vesicles is sparse except for VGLUT1 and ZnT3

MPS-Authors

Upmanyu, N.
Synaptic Metal Ion Dynamics and Signaling, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Emde, H. von der
Department of NanoBiophotonics, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Ganzella, M.
Laboratory of Neurobiology, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Bösche, L.
Synaptic Metal Ion Dynamics and Signaling, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Malviya, V. N.
Laboratory of Neurobiology, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Politi, A. Z.
Facility for Live-Cell Imaging, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Ninov, M.
Research Group of Bioanalytical Mass Spectrometry, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Silbern, I.
Research Group of Bioanalytical Mass Spectrometry, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Leutenegger, M.
Department of NanoBiophotonics, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Urlaub, H.
Research Group of Bioanalytical Mass Spectrometry, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Riedel, D.
Department of Structural Dynamics, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Preobraschenski, J.
Laboratory of Neurobiology, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Hell, S. W.
Department of NanoBiophotonics, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Jahn, R.
Laboratory of Neurobiology, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

Sambandan, S.
Synaptic Metal Ion Dynamics and Signaling, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

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Citation

Upmanyu, N., Jin, J., Emde, H. v. d., Ganzella, M., Bösche, L., Malviya, V. N., et al. (2022). Colocalization of different neurotransmitter transporters on synaptic vesicles is sparse except for VGLUT1 and ZnT3. Neuron, In Press. doi:10.1016/j.neuron.2022.02.008.

Cite as: http://hdl.handle.net/21.11116/0000-000A-2BEC-D

Abstract

Vesicular transporters (VTs) define the type of neurotransmitter that synaptic vesicles (SVs) store and release. While certain mammalian neurons release multiple transmitters, it is not clear whether the release occurs from the same or distinct vesicle pools at the synapse. Using quantitative single-vesicle imaging, we show that a vast majority of SVs in the rodent brain contain only one type of VT, indicating specificity for a single neurotransmitter. Interestingly, SVs containing dual transporters are highly diverse (27 types) but small in proportion (2% of all SVs), excluding the largest pool that carries VGLUT1 and ZnT3 (34%). Using VGLUT1-ZnT3 SVs, we demonstrate that the transporter colocalization influences the SV content and synaptic quantal size. Thus, the presence of diverse transporters on the same vesicle is bona fide, and depending on the VT types, this may act to regulate neurotransmitter type, content, and release in space and time.