PROJECT B5

Enlightening inhibitory neurotransmitter receptor organization and dynamics applying high-end microscopy

Project Description
Members
Publications


The regulation of glycine receptor numbers and organization at synapses is essential for the efficacy of inhibition and the control of neuronal excitability in the spinal cord. Receptor biosynthesis, local recycling and diffusion controlled transport of receptors into and out of the synapse, which is influenced by synaptic clustering and scaffolding, represent important mechanisms underlying adaptations in the amount of neurotransmitter receptors present at synapses. Postsynaptic glycine receptor clusters were significantly reduced in both size and number in spinal cord neurons upon loss-of-function for the membrane trafficking and cytoskeletal effector syndapin I. We now aim at unraveling the molecular mechanisms underlying these defects in inhibitory neurotransmitter receptor trafficking and/or organization upon syndapin I loss-of-function applying high resolution light microscopy in order to be able to reveal postsynaptic receptor clusters and intracellular trafficking compartments that are below the resolution limit for conventional light microscopy.

PRINCIPAL INVESTIGATORS

Prof. Dr. Heintzmann, Rainer

rainer.heintzmann@ipht-jena.de

Prof. Dr. Qualmann, Britta

britta.qualmann@med.uni-jena.de

STAFF MEMBERS

Dr. Karras, Christian

christian.karras@leibniz-ipht.de

PD Dr. Kessels, Michael

michael.kessels@med.uni-jena.de

Dr. Then, Patrick

patrick.then@leibniz-ipht.de

Dr. Tröger, Jessica

jessica.troeger@med.uni-jena.de

Title Year Authors Journal Links
Signal, noise and resolution in linear and nonlinear structured‐illumination microscopy 2019 Ingerman, E. A., London, R. A., Heintzmann, R., and Gustafsson, M. G. L. J Microsc More
Successful optimization of reconstruction parameters in structured illumination microscopy – a practical guide 2019 Karras, C., Smedh, M., Förster, R., Deschout, H., Fernandez-Rodriguez, J., and Heintzmann, R. Opt Commun More
The actin nucleator Cobl is critical for centriolar positioning, postnatal planar cell polarity refinement, and function of the cochlea 2018 Haag, N., Schüler, S., Nietzsche, S., Hübner, C.A., Strenzke, N., Qualmann, B., and Kessels, M.M. Cell Rep More
Automated distinction of shearing and distortion artefacts in structured illumination microscopy 2018 Förster, R., Müller, W., Richter, R., and Heintzmann, R. Opt Express More
Noise-corrected principal component analysis of fluorescence lifetime imaging data 2017 Le Marois, A., Labouesse, S., Suhling, K., and Heintzmann, R. J Biophotonics More
Multifocus structured illumination microscopy for fast volumetric super-resolution imaging 2017 Abrahamsson, S., Blom, H., Agostinho, A., Jans, D. C., Jost, A., Müller, M., Nilsson, L., Bernhem, K., Lambert, T. J., Heintzmann, R., and Brismar, H. Biomed Opt Express More
Super-resolution structured illumination microscopy 2017 Heintzmann, R. and Huser, T. Chem Rev More
Fast structured illumination microscopy using rolling shutter cameras 2016 Song, L. Y., Lu-Walther, H. W., Forster, R., Jost, A., Kielhorn, M., Zhou, J. Y., and Heintzmann, R. Measurement Science and Technology More
Calibrating photon counts from a single image 2016 Heintzmann, R., Relich, P.K., Nieuwenhuizen, R.P.J., Lidke, K.A., and Rieger, B. arXiv:1611.05654v2 More
Optical photon reassignment with increased axial resolution by structured illumination 2016 Roth, S. and Heintzmann, R. Methods Appl Fluoresc More
Nonlinear Structured Illumination Using a Fluorescent Protein Activating at the Readout Wavelength 2016 Lu-Walther, H.-W., Hou, W., Kielhorn, M., Arai, Y., Nagai, T., Kessels, M. M., Qualmann, B., Heintzmann, R. PLoS ONE More
Proteomic analysis of glycine receptor β subunit (GlyRβ)-interacting proteins: evidence for syndapin I regulating synaptic glycine receptors 2014 Del Pino, I., Koch, D., Schemm, R., Qualmann, B., Betz, H., and Paarmann, I. J Biol Chem More
ProSAP1 and membrane nanodomain-associated syndapin I promote postsynapse formation and function 2014 Schneider, K., Seemann, E., Liebmann, L., Ahuja, R., Koch, D., Westermann, M., Hübner, C. A., Kessels, M. M., and Qualmann, B. J Cell Biol More
Resolving a misconception about structured illumination 2014 Wicker, K., and Heintzmann, R. Nat Photon More
Optical Photon Reassignment microscopy (OPRA) 2013 Roth, S., Sheppard, C. J. R., Wicker, K., and Heintzmann, R. J Opt Nanosc More
Bayesian localization microscopy reveals nanoscale podosome dynamics 2012 Cox, S., Rosten, E., Monypenny, J., Jovanovic-Talisman, T., Burnette, D. T., Lippincott-Schwartz, J., Jones, G. E. and Heintzmann, R. Nat Methods More
Proper synaptic vesicle formation and neuronal network activity critically rely on syndapin I 2011 Koch, D., Spiwoks-Becker, I., Sabanov, V., Sinning, A., Dugladze, T., Stellmacher, A., Ahuja, R., Grimm, J., Schüler, S., Müller, A., Angenstein, F., Ahmed, T., Diesler, A., Moser, M., Tom Dieck, S., Spessert, R., Boeckers, T. M., Fässler, R., Hübner, C. A., Balschun, D., Gloveli, T., Kessels, M. M., and Qualmann, B. EMBO J More
The functions of the actin nucleator Cobl in cellular morphogenesis critically depend on syndapin I 2011 Schwintzer, L., Koch, N., Ahuja, R., Grimm, J., Kessels, M. M., and Qualmann, B. EMBO J More
Saturated patterned excitation microscopy (SPEM) - a novel concept for optical resolution improvement 2002 Heintzmann, R., Jovin, T. M., and Cremer, C. J Opt Soc Am A More
Syndapin isoforms participate in receptor-mediated endocytosis and actin organization 2000 Qualmann, B., and Kelly, R. B. J Cell Biol More
Lateral modulated excitation microscopy: Improvement of resolution by using a diffraction grating 1999 Heintzmann R., and Cremer, C. Proceedings of SPIE More