Source 1review2022The Journal of Chemical Physics
Toolkit/nanodisk voltage nanosensors
nanodisk voltage nanosensors
Also known as: nanodisk technology
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Organic voltage nanosensors based on polystyrene beads and nanodisk technology utilize Fluorescence (Förster) Resonance Energy Transfer (FRET) to sense local electric fields. Non-invasive MP recording from individual targeted sites (synapses and spines) with nanodisks has been realized.
Usefulness & Problems
Why this is useful
Nanodisk voltage nanosensors are an organic FRET-based format used for non-invasive membrane-potential recording. The abstract specifically highlights targeted measurements at synapses and spines.; non-invasive membrane-potential recording; targeted voltage recording at synapses and spines
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Nanodisk voltage nanosensors are an organic FRET-based format used for non-invasive membrane-potential recording. The abstract specifically highlights targeted measurements at synapses and spines.
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non-invasive membrane-potential recording
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targeted voltage recording at synapses and spines
Problem solved
They address the need for non-invasive voltage recording from very small, targeted neuronal structures such as synapses and spines.; optical access to membrane potential at individual targeted subcellular sites
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They address the need for non-invasive voltage recording from very small, targeted neuronal structures such as synapses and spines.
Source:
optical access to membrane potential at individual targeted subcellular sites
Problem links
optical access to membrane potential at individual targeted subcellular sites
LiteratureThey address the need for non-invasive voltage recording from very small, targeted neuronal structures such as synapses and spines.
Source:
They address the need for non-invasive voltage recording from very small, targeted neuronal structures such as synapses and spines.
Published Workflows
Objective: Develop nanoparticle-based optical voltage sensors for non-genetic, single-particle membrane-potential sensing with high temporal and spatial resolution and targeted subcellular readout.
Why it works: The review describes a coupled materials-and-methods strategy in which sensing particles are engineered for field sensitivity, surface ligands are designed to improve localization and compartmentalization, and optical readout methods are tailored to the sensing mechanism. This combination is presented as necessary for translating nanosensors into practical membrane-potential measurements at targeted sites.
quantum confined Stark effect sensing of local electric fieldsFRET-based sensing of local electric fieldsenhanced charge separationanisotropic facet-selective coatingtheoretical simulation-guided ligand designspectrally resolved fluorescence imagingsingle-particle optical readout
Stages
- 1.simulation-guided surface-ligand design(library_design)
The abstract states that biomaterial-based surface ligands are designed from theoretical simulations to support anisotropic facet-selective coating and effective compartmentalization.
Selection: design biomaterial-based surface ligands using theoretical simulations
- 2.hybrid nanobiomaterial construction and coating(library_build)
The review describes hybrid nanobiomaterials that satisfy anisotropic facet-selective coating, which is presented as enabling effective compartmentalization beyond non-specific staining.
Selection: generate hybrid nanobiomaterials with anisotropic facet-selective coating
- 3.mechanism-matched optical readout setup(functional_characterization)
The abstract explicitly states that a dedicated home-built fluorescence microscope is used to record spectrally resolved images for QCSE measurements at the single-particle level.
Selection: measure QCSE-induced spectral shifts with a dedicated spectrally resolved fluorescence microscope
- 4.cell and neuron membrane-potential response testing(confirmatory_validation)
The abstract reports clear photoluminescence intensity changes in self-spiking and patched HEK293 cells and cortical neurons after staining with hybrid nanobiomaterials.
Selection: look for photoluminescence intensity changes in response to membrane-potential changes after staining cells with hybrid nanobiomaterials
- 5.targeted subcellular recording at synapses and spines(secondary_characterization)
The abstract highlights nanodisk-based non-invasive membrane-potential recording from individual targeted sites such as synapses and spines, indicating a more demanding targeted-use stage.
Selection: demonstrate non-invasive membrane-potential recording from individual targeted sites
- 6.action-potential recording milestone(decision_gate)
The abstract explicitly states that both QCSE- and FRET-based voltage nanosensors still need to reach this milestone.
Selection: ability to record individual action potentials from individual targeted sites
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Architecture: A reusable architecture pattern for arranging parts into an engineered system.
Techniques
No technique tags yet.
Target processes
No target processes tagged yet.
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: sensor
Implementation requires nanodisk-based FRET sensor construction and optical measurement in cultured systems at targeted sites.; requires FRET-based nanodisk sensor design; requires targeted deployment to synapses or spines
The review says the platform still has not achieved recording of individual action potentials from individual targeted sites.; has not yet reached recording of individual action potentials from individual targeted sites
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
Hybrid nanobiomaterials stained into self-spiking and patched HEK293 cells and cortical neurons show photoluminescence intensity changes in response to membrane-potential changes.
Nanodisks have enabled non-invasive membrane-potential recording from individual targeted sites such as synapses and spines.
A dedicated home-built fluorescence microscope can record spectrally resolved images to measure QCSE-induced spectral shifts at the single-particle level.
Biomaterial-based surface ligands designed from theoretical simulations enable anisotropic facet-selective coating and effective compartmentalization beyond non-specific staining.
Both QCSE-based and FRET-based voltage nanosensors still need to achieve recording of individual action potentials from individual targeted sites.
Inorganic voltage nanosensors use the quantum confined Stark effect to sense local electric fields.
Organic voltage nanosensors based on polystyrene beads and nanodisk technology use FRET to sense local electric fields.
Engineered inorganic nanoparticles achieve substantial single-particle voltage sensitivity at room temperature, including about 2% spectral Stark shift and up to about 30% delta F over F per 160 mV.
delta F over F ~30%spectral Stark shift ~2%
Voltage-sensing FRET pairs achieve up to about 35% delta F over F per 120 mV in cultures.
delta F over F ~35%
Nanoparticle-based inorganic and organic voltage sensors are being developed as potential tools for non-genetic optogenetics and single-particle optical electrophysiology.
Approval Evidence
1 source3 linked approval claimsfirst-pass slug nanodisk-voltage-nanosensors
Organic voltage nanosensors based on polystyrene beads and nanodisk technology utilize Fluorescence (Förster) Resonance Energy Transfer (FRET) to sense local electric fields. Non-invasive MP recording from individual targeted sites (synapses and spines) with nanodisks has been realized.
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application summarysupports
Nanodisks have enabled non-invasive membrane-potential recording from individual targeted sites such as synapses and spines.
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limitationsupports
Both QCSE-based and FRET-based voltage nanosensors still need to achieve recording of individual action potentials from individual targeted sites.
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mechanismsupports
Organic voltage nanosensors based on polystyrene beads and nanodisk technology use FRET to sense local electric fields.
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Comparisons
Source-stated alternatives
The abstract contrasts nanodisk FRET sensors with QCSE-based inorganic nanoparticle voltage sensors and also mentions polystyrene bead-based organic sensors.
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The abstract contrasts nanodisk FRET sensors with QCSE-based inorganic nanoparticle voltage sensors and also mentions polystyrene bead-based organic sensors.
Source-backed strengths
non-invasive membrane-potential recording from individual targeted sites has been realized
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non-invasive membrane-potential recording from individual targeted sites has been realized
Compared with FRET
The abstract contrasts nanodisk FRET sensors with QCSE-based inorganic nanoparticle voltage sensors and also mentions polystyrene bead-based organic sensors.
Shared frame: source-stated alternative in extracted literature
Strengths here: non-invasive membrane-potential recording from individual targeted sites has been realized.
Relative tradeoffs: has not yet reached recording of individual action potentials from individual targeted sites.
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The abstract contrasts nanodisk FRET sensors with QCSE-based inorganic nanoparticle voltage sensors and also mentions polystyrene bead-based organic sensors.
Compared with genetic probes for membrane potential monitoring
The abstract contrasts nanodisk FRET sensors with QCSE-based inorganic nanoparticle voltage sensors and also mentions polystyrene bead-based organic sensors.
Shared frame: source-stated alternative in extracted literature
Strengths here: non-invasive membrane-potential recording from individual targeted sites has been realized.
Relative tradeoffs: has not yet reached recording of individual action potentials from individual targeted sites.
Source:
The abstract contrasts nanodisk FRET sensors with QCSE-based inorganic nanoparticle voltage sensors and also mentions polystyrene bead-based organic sensors.
Ranked Citations
- 1.