Source 1primary paper2025MED
Toolkit/SA-PSDΔVenus
SA-PSDΔVenus
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
we employed a post-synaptic translation-dependent reporter consistent with potentiation (SA-PSDΔVenus)
Usefulness & Problems
Why this is useful
SA-PSDΔVenus is used here as a post-synaptic translation-dependent reporter consistent with synaptic potentiation. The study uses it to label potentiated dendritic spines in mouse hippocampal CA1.; marking potentiation-consistent dendritic spines; mapping spatial distribution of potentiated synaptic inputs in hippocampal neurons
Source:
SA-PSDΔVenus is used here as a post-synaptic translation-dependent reporter consistent with synaptic potentiation. The study uses it to label potentiated dendritic spines in mouse hippocampal CA1.
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marking potentiation-consistent dendritic spines
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mapping spatial distribution of potentiated synaptic inputs in hippocampal neurons
Problem solved
It helps resolve where potentiation-consistent spines are located relative to neurons activated during encoding or recall. This addresses the unclear relationship between spine potentiation and neuron-wide activation.; provides a reporter for synapse-level potentiation-associated labeling during memory-related experiments
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It helps resolve where potentiation-consistent spines are located relative to neurons activated during encoding or recall. This addresses the unclear relationship between spine potentiation and neuron-wide activation.
Source:
provides a reporter for synapse-level potentiation-associated labeling during memory-related experiments
Problem links
provides a reporter for synapse-level potentiation-associated labeling during memory-related experiments
LiteratureIt helps resolve where potentiation-consistent spines are located relative to neurons activated during encoding or recall. This addresses the unclear relationship between spine potentiation and neuron-wide activation.
Source:
It helps resolve where potentiation-consistent spines are located relative to neurons activated during encoding or recall. This addresses the unclear relationship between spine potentiation and neuron-wide activation.
Published Workflows
Objective: Determine the spatiotemporal correlation between potentiation-consistent dendritic spine labeling and neuronal activation in mouse hippocampal CA1 after contextual fear conditioning during encoding and recall phases.
Why it works: The study pairs a post-synaptic translation-dependent reporter consistent with potentiation with a neuronal activation reporter so that potentiated spines can be compared against activated neurons across memory phases and CA1 layers.
postsynaptic potentiation-associated spine labelingactivity-dependent neuronal labelingmemory encoding versus recall comparisondual reporter imagingcontextual fear conditioning
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Architecture: A reusable architecture pattern for arranging parts into an engineered system.
Mechanisms
Translation ControlTechniques
No technique tags yet.
Target processes
translationImplementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: reporter
The abstract supports use in mouse hippocampal CA1 following contextual fear conditioning and in combination with imaging-based comparison to an activity reporter. Additional construct delivery details are not provided in the abstract.; requires expression in mouse hippocampal CA1 neurons; used in conjunction with contextual fear conditioning in this study
The abstract does not show that SA-PSDΔVenus alone identifies causal memory engrams or directly measures all aspects of synaptic plasticity. It is described as a reporter consistent with potentiation.; the abstract describes it as consistent with potentiation rather than a direct measurement of long-term potentiation
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
SA-PSDΔVenus-positive spines were enriched in ESARE-dTurquoise-positive neurons in mouse hippocampal CA1 following contextual fear conditioning.
SA-PSDΔVenus+ spines were enriched in ESARE-dTurquoise+ neurons
The relative weight and spatial distribution of potentiated synaptic inputs to hippocampal CA1 pyramidal neurons change between memory encoding and retrieval.
These findings demonstrate that the relative weight and spatial distribution of potentiated synaptic inputs to hippocampal CA1 pyramidal neurons change between the encoding and retrieval phases of memory.
After contextual fear conditioning during encoding, SA-PSDΔVenus-positive spines were more frequent in activated neurons in stratum oriens and stratum lacunosum moleculare.
SA-PSDΔVenus+ were more frequent in activated neurons in stratum oriens and stratum lacunosum moleculare after CFC (encoding)
During recall, recall-activated neurons showed a larger number of SA-PSDΔVenus-positive spines in stratum radiatum.
recall-activated neurons showed a larger number of SA-PSDΔVenus+ in the stratum radiatum
Approval Evidence
1 source4 linked approval claimsfirst-pass slug sa-psd-venus
we employed a post-synaptic translation-dependent reporter consistent with potentiation (SA-PSDΔVenus)
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enrichmentsupports
SA-PSDΔVenus-positive spines were enriched in ESARE-dTurquoise-positive neurons in mouse hippocampal CA1 following contextual fear conditioning.
SA-PSDΔVenus+ spines were enriched in ESARE-dTurquoise+ neurons
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phase differencesupports
The relative weight and spatial distribution of potentiated synaptic inputs to hippocampal CA1 pyramidal neurons change between memory encoding and retrieval.
These findings demonstrate that the relative weight and spatial distribution of potentiated synaptic inputs to hippocampal CA1 pyramidal neurons change between the encoding and retrieval phases of memory.
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spatial distributionsupports
After contextual fear conditioning during encoding, SA-PSDΔVenus-positive spines were more frequent in activated neurons in stratum oriens and stratum lacunosum moleculare.
SA-PSDΔVenus+ were more frequent in activated neurons in stratum oriens and stratum lacunosum moleculare after CFC (encoding)
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spatial distributionsupports
During recall, recall-activated neurons showed a larger number of SA-PSDΔVenus-positive spines in stratum radiatum.
recall-activated neurons showed a larger number of SA-PSDΔVenus+ in the stratum radiatum
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Comparisons
Source-stated alternatives
The provided upstream summary names SynActive as the antecedent strategy and cites dual-eGRASP and AS-PaRac1 as related synapse-focused approaches. The abstract itself does not directly compare performance against these alternatives.
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The provided upstream summary names SynActive as the antecedent strategy and cites dual-eGRASP and AS-PaRac1 as related synapse-focused approaches. The abstract itself does not directly compare performance against these alternatives.
Source-backed strengths
reports potentiation-consistent signal at postsynaptic spines; can be paired with a neuronal activation reporter for spatiotemporal correlation analysis
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reports potentiation-consistent signal at postsynaptic spines
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can be paired with a neuronal activation reporter for spatiotemporal correlation analysis
Compared with 4pLRE-cPAOX1
SA-PSDΔVenus and 4pLRE-cPAOX1 address a similar problem space because they share translation.
Shared frame: same top-level item type; shared target processes: translation; shared mechanisms: translation_control
Strengths here: looks easier to implement in practice.
Compared with blue-light-activated DNA template ON switch
SA-PSDΔVenus and blue-light-activated DNA template ON switch address a similar problem space because they share translation.
Shared frame: same top-level item type; shared target processes: translation; shared mechanisms: translation_control
Strengths here: looks easier to implement in practice.
Compared with functional electrical stimulation
SA-PSDΔVenus and functional electrical stimulation address a similar problem space because they share translation.
Shared frame: same top-level item type; shared target processes: translation; shared mechanisms: translation_control
Ranked Citations
- 1.