Concept

Exocytose

Publications associées (73)

Cholesterol-Containing Liposomes Decorated With Au Nanoparticles as Minimal Tunable Fusion Machinery

Francesco Stellacci, Paulo Henrique Jacob Silva, Ester Canepa, Giulia Rossi

Membrane fusion is essential for the basal functionality of eukaryotic cells. In physiological conditions, fusion events are regulated by a wide range of specialized proteins, operating with finely tuned local lipid composition and ionic environment. Fusog ...

WILEY-V C H VERLAG GMBH2023

Theoretical analysis of divalent cation effects on aptamer recognition of neurotransmitter targets

Nako Nakatsuka, Dmitry Momotenko, Annina Stuber

Aptamer-based sensing of small molecules such as dopamine and serotonin in the brain, requires characterization of the specific aptamer sequences in solutions mimicking the in vivo environment with physiological ionic concentrations. In particular, divalen ...

2023

Real-time monitoring of single-cell secretion with a high-throughput nanoplasmonic microarray

Hatice Altug, Xiaokang Li, Yen-Cheng Liu, Saeid Ansaryan, Eduardo Romero Arvelo

Proteins secreted by cells play significant roles in mediating many physiological, developmental, and pathological processes due to their functions in intra/intercellular communication and signaling. Conventional end-point methods are insufficient for unde ...

2022

Aptamer-modified biosensors to visualize neurotransmitter flux

Nako Nakatsuka, Emilie Vuille-Dit-Bille

Chemical biosensors with the capacity to continuously monitor various neurotransmitter dynamics can be powerful tools to understand complex signaling pathways in the brain. However, in vivo detection of neurochemicals is challenging for many reasons such a ...

2022

Calcium-Mediated Liposome Fusion to Engineer Giant Lipid Vesicles with Cytosolic Proteins and Reconstituted Mammalian Proteins

Leo Scheller

Giant unilamellar lipid vesicles (GUVs) are widely used as model membrane systems and provide an excellent basis to construct artificial cells. To construct more sophisticated artificial cells, proteins-in particular membrane proteins-need to be incorporat ...

2020

Calcium-triggered fusion of lipid membranes is enabled by amphiphilic nanoparticles

Francesco Stellacci, Ye Yang, Ahmet Bekdemir, Zekiye Pelin Güven

Lipid membrane fusion is an essential process for a number of critical biological functions. The overall process is thermodynamically favorable but faces multiple kinetic barriers along the way. Inspired by nature's engineered proteins such as SNAP recepto ...

NATL ACAD SCIENCES2020

Photoregulated fluxional fluorophores for live-cell super-resolution microscopy with no apparent photobleaching

Pablo Rivera Fuentes

Photoswitchable mols. have multiple applications in the phys. and life sciences because their properties can be modulated with light. Fluxional mols., which undergo rapid degenerate rearrangements in the electronic ground state, also exhibit switching beha ...

Springer2019

Estimating the Readily-Releasable Vesicle Pool Size at Synaptic Connections in the Neocortex

Henry Markram, Eilif Benjamin Muller, Srikanth Ramaswamy, Rodrigo de Campos Perin, Natali Barros Zulaica, Giuseppe Chindemi

Previous studies based on the 'Quantal Model' for synaptic transmission suggest that neurotransmitter release is mediated by a single release site at individual synaptic contacts in the neocortex. However, recent studies seem to contradict this hypothesis ...

2019

ER-to-lysosome-associated degradation of proteasome-resistant ATZ polymers occurs via receptor-mediated vesicular transport

Maurizio Molinari, Paolo Paganetti

Maintenance of cellular proteostasis relies on efficient clearance of defective gene products. For misfolded secretory proteins, this involves dislocation from the endoplasmic reticulum (ER) into the cytosol followed by proteasomal degradation. However, po ...

2018

EVIR: Chimeric receptors that enhance dendritic cell cross-dressing with tumor antigens

Michele De Palma, Mario Leonardo Squadrito, Chiara Cianciaruso, Sarah Kate Hansen

We describe a lentivirus-encoded chimeric receptor, termed extracellular vesicle (EV)-internalizing receptor (EVIR), which enables the selective uptake of cancer-cell-derived EVs by dendritic cells (DCs). The EVIR enhances DC presentation of EV-associated ...

2018

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