Source 1primary paper2025MED
Toolkit/fluorescence-activated cell sorting
fluorescence-activated cell sorting
Also known as: FACS
Taxonomy: Technique Branch / Method. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Complementary biochemical analysis, utilizing Zymosan bioparticles and fluorescence-activated cell sorting (FACS), further demonstrated that cells with reduced phagocytic activity exhibited decreased endogenous b3-secretase activity.
Usefulness & Problems
Why this is useful
FACS was used as part of a complementary biochemical analysis to examine cells differing in phagocytic activity. In this study it supported the link between reduced phagocytosis and decreased endogenous b3-secretase activity.; complementary biochemical analysis of phagocytic activity-associated cell populations
Source:
FACS was used as part of a complementary biochemical analysis to examine cells differing in phagocytic activity. In this study it supported the link between reduced phagocytosis and decreased endogenous b3-secretase activity.
Source:
complementary biochemical analysis of phagocytic activity-associated cell populations
Problem solved
It provides an orthogonal analysis route to support the live-cell imaging findings.; provides a complementary population-based analysis alongside live-cell imaging
Source:
It provides an orthogonal analysis route to support the live-cell imaging findings.
Source:
provides a complementary population-based analysis alongside live-cell imaging
Problem links
provides a complementary population-based analysis alongside live-cell imaging
LiteratureIt provides an orthogonal analysis route to support the live-cell imaging findings.
Source:
It provides an orthogonal analysis route to support the live-cell imaging findings.
Published Workflows
Objective: Determine whether naturally occurring cell-by-cell variations in endogenous b3-secretase activity are associated with microglial phagocytic activity.
Why it works: The workflow combines live-cell biosensor measurement of endogenous b3-secretase activity with orthogonal phagocytosis assays so that the same biological relationship can be examined by imaging and complementary biochemical analysis.
association between endogenous b3-secretase activity and microglial phagocytosisgenetically encoded FRET biosensor measurementmultiplexed time-lapse imagingcomplementary biochemical analysisFACS
Stages
- 1.Live-cell biosensor measurement of endogenous b3-secretase activity(functional_characterization)
This stage establishes whether endogenous b3-secretase activity varies among individual microglial cells before relating that variation to phagocytic behavior.
Selection: Measure endogenous b3-secretase activity in individual cells using a genetically encoded FRET biosensor.
- 2.Multiplexed time-lapse imaging of phagocytosis versus b3-secretase activity(secondary_characterization)
This stage tests whether the single-cell variation in endogenous b3-secretase activity is associated with phagocytic performance.
Selection: Compare phagocytosis of E. coli bioparticles between cells with lower versus higher b3-secretase activity.
- 3.Complementary biochemical confirmation with Zymosan bioparticles and FACS(confirmatory_validation)
This stage provides confirmatory evidence using a different phagocytic substrate and analytical modality.
Selection: Use complementary biochemical analysis to test whether reduced phagocytic activity co-occurs with decreased endogenous b3-secretase activity.
Steps
- 1.Record endogenous b3-secretase activity with the Notch1 N100 Y-T FRET biosensoractivity biosensor
Measure naturally occurring cell-by-cell variation in endogenous b3-secretase activity.
The study first needed a direct readout of endogenous b3-secretase activity before testing whether that variation is associated with phagocytic activity.
- 2.Assess E. coli bioparticle phagocytosis by multiplexed time-lapse imaging relative to b3-secretase activity state
Test whether lower endogenous b3-secretase activity is associated with impaired phagocytosis.
After establishing cell-by-cell variation in b3-secretase activity, the next step was to determine whether that variation tracks with phagocytic behavior.
- 3.Confirm the activity-phagocytosis relationship using Zymosan bioparticles and FACScomplementary analysis method
Provide orthogonal confirmation that reduced phagocytic activity is associated with decreased endogenous b3-secretase activity.
This confirmatory step follows the imaging result to test the same relationship with a complementary biochemical and sorting-based approach.
Taxonomy & Function
Primary hierarchy
Technique Branch
Method: A concrete measurement method used to characterize an engineered system.
Mechanisms
fluorescence-based cell sortingTechniques
Functional AssayTarget processes
recombinationInput: Chemical
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: sensor
The abstract supports that this approach requires fluorescence-activated cell sorting and Zymosan bioparticles. Specific gating or panel details are not provided.; requires fluorescence-activated cell sorting instrumentation; used here with Zymosan bioparticles
The abstract does not indicate that FACS alone provides the same time-lapse single-cell activity tracking as the FRET imaging approach.; abstract does not specify gating strategy or quantitative outputs
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
Cells with reduced phagocytic activity exhibit decreased endogenous b3-secretase activity in complementary biochemical analysis using Zymosan bioparticles and FACS.
Complementary biochemical analysis, utilizing Zymosan bioparticles and fluorescence-activated cell sorting (FACS), further demonstrated that cells with reduced phagocytic activity exhibited decreased endogenous b3-secretase activity.
Approval Evidence
1 source1 linked approval claimfirst-pass slug fluorescence-activated-cell-sorting
Complementary biochemical analysis, utilizing Zymosan bioparticles and fluorescence-activated cell sorting (FACS), further demonstrated that cells with reduced phagocytic activity exhibited decreased endogenous b3-secretase activity.
Source:
associationsupports
Cells with reduced phagocytic activity exhibit decreased endogenous b3-secretase activity in complementary biochemical analysis using Zymosan bioparticles and FACS.
Complementary biochemical analysis, utilizing Zymosan bioparticles and fluorescence-activated cell sorting (FACS), further demonstrated that cells with reduced phagocytic activity exhibited decreased endogenous b3-secretase activity.
Source:
Comparisons
Source-stated alternatives
The abstract contrasts this complementary FACS-based biochemical analysis with multiplexed time-lapse imaging using the Notch1 N100 Y-T biosensor.
Source:
The abstract contrasts this complementary FACS-based biochemical analysis with multiplexed time-lapse imaging using the Notch1 N100 Y-T biosensor.
Source-backed strengths
used as complementary analysis to support the imaging-based association
Source:
used as complementary analysis to support the imaging-based association
Compared with imaging
The abstract contrasts this complementary FACS-based biochemical analysis with multiplexed time-lapse imaging using the Notch1 N100 Y-T biosensor.
Shared frame: source-stated alternative in extracted literature
Strengths here: used as complementary analysis to support the imaging-based association.
Relative tradeoffs: abstract does not specify gating strategy or quantitative outputs.
Source:
The abstract contrasts this complementary FACS-based biochemical analysis with multiplexed time-lapse imaging using the Notch1 N100 Y-T biosensor.
Compared with imaging surveillance
The abstract contrasts this complementary FACS-based biochemical analysis with multiplexed time-lapse imaging using the Notch1 N100 Y-T biosensor.
Shared frame: source-stated alternative in extracted literature
Strengths here: used as complementary analysis to support the imaging-based association.
Relative tradeoffs: abstract does not specify gating strategy or quantitative outputs.
Source:
The abstract contrasts this complementary FACS-based biochemical analysis with multiplexed time-lapse imaging using the Notch1 N100 Y-T biosensor.
Ranked Citations
- 1.