Source 1review2023Frontiers in Molecular Neuroscience
Toolkit/calcium and fluorescent imaging
calcium and fluorescent imaging
Taxonomy: Technique Branch / Method. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
In combination with calcium and fluorescent imaging, functional alterations caused by mutations in epilepsy genes can be traced.
Usefulness & Problems
Why this is useful
Calcium and fluorescent imaging are presented as methods to trace functional alterations caused by epilepsy-gene mutations. In the review context, they provide readouts downstream of genetic or optogenetic perturbation.; tracing functional alterations caused by mutations in epilepsy genes
Source:
Calcium and fluorescent imaging are presented as methods to trace functional alterations caused by epilepsy-gene mutations. In the review context, they provide readouts downstream of genetic or optogenetic perturbation.
Source:
tracing functional alterations caused by mutations in epilepsy genes
Problem solved
These methods help connect mutations in epilepsy genes to observable functional changes. They add mechanistic readouts beyond gross behavioral phenotypes.; provides a way to observe functional consequences of epilepsy-gene mutations
Source:
These methods help connect mutations in epilepsy genes to observable functional changes. They add mechanistic readouts beyond gross behavioral phenotypes.
Source:
provides a way to observe functional consequences of epilepsy-gene mutations
Problem links
provides a way to observe functional consequences of epilepsy-gene mutations
LiteratureThese methods help connect mutations in epilepsy genes to observable functional changes. They add mechanistic readouts beyond gross behavioral phenotypes.
Source:
These methods help connect mutations in epilepsy genes to observable functional changes. They add mechanistic readouts beyond gross behavioral phenotypes.
Published Workflows
Objective: Generate and analyze Drosophila models carrying disease-associated epilepsy variants in order to interpret pathogenic consequences, study seizure-related phenotypes, and explore therapeutic implications.
Why it works: The review abstract describes a linked workflow in which disease-associated variants are introduced into flies, then screened for organism-level seizure-related phenotypes and drug responses, and further interrogated with optogenetic and imaging methods to trace functional alterations.
seizure inductionneuronal activity modulationmutation-associated functional alteration tracinggene editingphenotypic screeningbehavioral screeningdrug-response screeningoptogeneticscalcium imagingfluorescent imaging
Stages
- 1.Generate flies carrying disease-associated variants(library_build)
This stage creates the fly models needed for downstream epilepsy phenotyping and functional analysis.
Selection: Introduction of disease-associated variants into Drosophila using gene editing techniques such as CRISPR/Cas9.
- 2.Screen variant-carrying flies for seizure-related phenotypes and drug responses(broad_screen)
This stage identifies observable consequences of disease-associated variants and potential therapeutic-response patterns.
Selection: Phenotypic and behavioral abnormalities, shifting of seizure thresholds, and response to anti-seizure medications and other substances.
- 3.Manipulate neuronal activity and induce seizures with optogenetic tools(functional_characterization)
This stage provides controlled perturbation of neural activity to probe seizure mechanisms beyond passive phenotype observation.
Selection: Ability to modify neuronal activity and induce seizures using optogenetic tools.
- 4.Trace mutation-associated functional alterations with calcium and fluorescent imaging(secondary_characterization)
This stage adds mechanistic readouts that can connect epilepsy-gene mutations to functional changes.
Selection: Imaging-based tracing of functional alterations caused by mutations in epilepsy genes.
Taxonomy & Function
Primary hierarchy
Technique Branch
Method: A concrete measurement method used to characterize an engineered system.
Techniques
Functional AssayTarget processes
No target processes tagged yet.
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: sensor
They require imaging instrumentation and suitable fluorescent or calcium-based readouts. The abstract does not specify the exact reporters or imaging platform.; requires calcium and/or fluorescent imaging capability; requires a fly model carrying mutations in epilepsy genes
The abstract does not state that imaging alone establishes therapeutic relevance or whole-organism seizure outcomes. It also does not define the limits of sensitivity or throughput.; abstract does not specify imaging reporters, resolution, or quantitative endpoints
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
CRISPR/Cas9 is described as a convenient way to generate flies carrying disease-associated variants.
Gene editing techniques, such as CRISPR/Cas9, are a convenient way to generate flies carrying disease-associated variants.
Calcium and fluorescent imaging can be used to trace functional alterations caused by mutations in epilepsy genes.
In combination with calcium and fluorescent imaging, functional alterations caused by mutations in epilepsy genes can be traced.
Bang-sensitive mutants respond to mechanical stimulation such as a brief vortex with stereotypic seizures and paralysis.
These flies respond to mechanical stimulation, such as a brief vortex, with stereotypic seizures and paralysis.
Variant-carrying flies can be screened for phenotypic and behavioral abnormalities, seizure-threshold shifts, and responses to anti-seizure medications and other substances.
These flies can be screened for phenotypic and behavioral abnormalities, shifting of seizure thresholds, and response to anti-seizure medications and other substances.
Approval Evidence
1 source1 linked approval claimfirst-pass slug calcium-and-fluorescent-imaging
In combination with calcium and fluorescent imaging, functional alterations caused by mutations in epilepsy genes can be traced.
Source:
functional readoutsupports
Calcium and fluorescent imaging can be used to trace functional alterations caused by mutations in epilepsy genes.
In combination with calcium and fluorescent imaging, functional alterations caused by mutations in epilepsy genes can be traced.
Source:
Comparisons
Source-stated alternatives
The abstract also mentions phenotypic and behavioral screening, seizure-threshold assessment, and response-to-medication screening as other readout strategies.
Source:
The abstract also mentions phenotypic and behavioral screening, seizure-threshold assessment, and response-to-medication screening as other readout strategies.
Source-backed strengths
can trace functional alterations when combined with neuronal activity modification approaches
Source:
can trace functional alterations when combined with neuronal activity modification approaches
Compared with Langendorff perfused heart electrical recordings
calcium and fluorescent imaging and Langendorff perfused heart electrical recordings address a similar problem space.
Shared frame: same top-level item type
Strengths here: looks easier to implement in practice.
Compared with native green gel system
calcium and fluorescent imaging and native green gel system address a similar problem space.
Shared frame: same top-level item type
Strengths here: looks easier to implement in practice.
calcium and fluorescent imaging and sub-picosecond pump-probe analysis of bacteriorhodopsin pigments address a similar problem space.
Shared frame: same top-level item type
Strengths here: looks easier to implement in practice.
Ranked Citations
- 1.