nanoPaint: a Tool for Rapid and Dynamic Imaging of Membrane Structural Plasticity at the Nano- Scale - Inserm - Institut national de la santé et de la recherche médicale Accéder directement au contenu
Article Dans Une Revue Small Année : 2019

nanoPaint: a Tool for Rapid and Dynamic Imaging of Membrane Structural Plasticity at the Nano- Scale

Résumé

Single-particle tracking with quantum dots (QDs) constitutes a powerful tool to track the nanoscopic dynamics of individual cell membrane components unveiling their membrane diffusion characteristics. Here, the nano-resolved population dynamics of QDs is exploited to reconstruct the topography and structural changes of the cell membrane surface with high temporal and spatial resolution. For this proof-of-concept study, bright, small and stable biofunctional QD nanoconstructs are utilized recognizing the endogenous neuronal cannabinoid type-1 receptor, a highly-expressed and fast-diffusing membrane protein, together with a commercial point-localization microscope. Rapid QD diffusion on the axonal plasma membrane of cultured 2 hippocampal neurons allows precise reconstruction of the membrane surface in less than one minute with a spatial resolution of tens of nanometers. Access of the QD nanoconstructs to the synaptic cleft enables rapid 3D topological reconstruction of the entire presynaptic component. Successful reconstruction of membrane nano-topology and deformation at the second timescale is also demonstrated for HEK293 cell filopodia and axons. Named "nanoPaint", this super-resolution imaging technique amenable to any endogenous transmembrane target represents then a versatile platform to rapidly and accurately reconstruct the cell membrane nano-topography, thereby enabling the study of the rapid dynamic phenomena involved in neuronal membrane plasticity.
Fichier principal
Vignette du fichier
nanoPaint final for Small_revised_HAL.pdf (976.31 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

inserm-02390138 , version 1 (02-12-2019)

Identifiants

Citer

Mariana Tasso, Thomas Pons, Nicolas Lequeux, Diana Zala, Zsolt D Lenkei, et al.. nanoPaint: a Tool for Rapid and Dynamic Imaging of Membrane Structural Plasticity at the Nano- Scale. Small, 2019, 15 (47), pp.e1902796. ⟨10.1002/smll.201902796⟩. ⟨inserm-02390138⟩
100 Consultations
103 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More