Related Experiment Video
Updated: Apr 3, 2026
09:39
Quantitative Immunofluorescence Assay to Measure the Variation in Protein Levels at Centrosomes
Published on: December 20, 2014
15.9K
Radial Profile-Based Quantification of Centrosomal Proteins.
1Sir William Dunn School of Pathology, University of Oxford, Oxford, UK.
Bio-Protocol
|April 2, 2026
Summary
This study introduces a new method to measure protein levels within centrosomes in fruit fly embryos. This technique uses radial profile analysis for precise quantification of centrosomal protein abundance and distribution.
Area of Science:
- Cell Biology
- Microscopy Techniques
Background:
- Centrosomes are vital organelles for cell division and cilia formation.
- Understanding centrosome protein dynamics is crucial for cell biology research.
Purpose of the Study:
- To present a protocol for quantifying relative centrosomal protein abundance in Drosophila melanogaster embryos.
- To enable high-resolution, quantitative analysis of dynamic centrosome assembly.
Main Methods:
- The protocol involves embryo collection, dechorionation, live imaging, and confocal microscopy.
- Radial profile analysis of fluorescence intensity is used to quantify protein abundance and spatial distribution.
- Integration with fluorescence recovery after photobleaching (FRAP) and 3D structured illumination microscopy (3D-SIM) is described.
Main Results:
- Radial profiling provides quantitative measurements of centrosomal protein abundance and spatial distribution.
- The method allows for the generation of relative or normalized intensity profiles.
- Compatibility with both confocal and super-resolution microscopy is demonstrated.
Conclusions:
- This protocol offers a robust method for quantitative analysis of centrosome assembly in a genetically tractable system.
- Combining radial profiling with advanced imaging techniques enhances the resolution and scope of centrosome research.
