Colocalization by cross-correlation, a new method of colocalization suited for super-resolution microscopy

Abstract Background A common goal of scientific microscopic imaging is to determine if a spatial correlation exists between two imaged structures. This is generally accomplished by imaging fluorescently labeled structures and measuring their spatial correlation with a class of image analysis algorit...

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Main Author: Andrew D. McCall
Format: Article
Language:English
Published: BMC 2024-02-01
Series:BMC Bioinformatics
Subjects:
Online Access:https://doi.org/10.1186/s12859-024-05675-z
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author Andrew D. McCall
author_facet Andrew D. McCall
author_sort Andrew D. McCall
collection DOAJ
description Abstract Background A common goal of scientific microscopic imaging is to determine if a spatial correlation exists between two imaged structures. This is generally accomplished by imaging fluorescently labeled structures and measuring their spatial correlation with a class of image analysis algorithms known as colocalization. However, the most commonly used methods of colocalization have strict limitations, such as requiring overlap in the fluorescent markers and reporting requirements for accurate interpretation of the data, that are often not met. Due to the development of novel super-resolution techniques, which reduce the overlap of the fluorescent signals, a new colocalization method is needed that does not have such strict requirements. Results In order to overcome the limitations of other colocalization algorithms, I developed a new ImageJ/Fiji plugin, Colocalization by cross-correlation (CCC). This method uses cross-correlation over space to identify spatial correlations as a function of distance, removing the overlap requirement and providing more comprehensive results. CCC is compatible with 3D and time-lapse images, and was designed to be easy to use. CCC also generates new images that only show the correlating labeled structures from the input images, a novel feature among the cross-correlating algorithms. Conclusions CCC is a versatile, powerful, and easy to use colocalization and spatial correlation tool that is available through the Fiji update sites. Full and up to date documentation can be found at https://imagej.net/plugins/colocalization-by-cross-correlation . CCC source code is available at https://github.com/andmccall/Colocalization_by_Cross_Correlation .
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spelling doaj.art-0a313f3bb261408d96e82594382cbd3a2024-03-05T20:31:55ZengBMCBMC Bioinformatics1471-21052024-02-0125112110.1186/s12859-024-05675-zColocalization by cross-correlation, a new method of colocalization suited for super-resolution microscopyAndrew D. McCall0Optical Imaging and Analysis Facility, School of Dental Medicine, University at BuffaloAbstract Background A common goal of scientific microscopic imaging is to determine if a spatial correlation exists between two imaged structures. This is generally accomplished by imaging fluorescently labeled structures and measuring their spatial correlation with a class of image analysis algorithms known as colocalization. However, the most commonly used methods of colocalization have strict limitations, such as requiring overlap in the fluorescent markers and reporting requirements for accurate interpretation of the data, that are often not met. Due to the development of novel super-resolution techniques, which reduce the overlap of the fluorescent signals, a new colocalization method is needed that does not have such strict requirements. Results In order to overcome the limitations of other colocalization algorithms, I developed a new ImageJ/Fiji plugin, Colocalization by cross-correlation (CCC). This method uses cross-correlation over space to identify spatial correlations as a function of distance, removing the overlap requirement and providing more comprehensive results. CCC is compatible with 3D and time-lapse images, and was designed to be easy to use. CCC also generates new images that only show the correlating labeled structures from the input images, a novel feature among the cross-correlating algorithms. Conclusions CCC is a versatile, powerful, and easy to use colocalization and spatial correlation tool that is available through the Fiji update sites. Full and up to date documentation can be found at https://imagej.net/plugins/colocalization-by-cross-correlation . CCC source code is available at https://github.com/andmccall/Colocalization_by_Cross_Correlation .https://doi.org/10.1186/s12859-024-05675-zColocalizationImage analysisImage cross-correlation spectroscopyCross-correlationSuper-resolution
spellingShingle Andrew D. McCall
Colocalization by cross-correlation, a new method of colocalization suited for super-resolution microscopy
BMC Bioinformatics
Colocalization
Image analysis
Image cross-correlation spectroscopy
Cross-correlation
Super-resolution
title Colocalization by cross-correlation, a new method of colocalization suited for super-resolution microscopy
title_full Colocalization by cross-correlation, a new method of colocalization suited for super-resolution microscopy
title_fullStr Colocalization by cross-correlation, a new method of colocalization suited for super-resolution microscopy
title_full_unstemmed Colocalization by cross-correlation, a new method of colocalization suited for super-resolution microscopy
title_short Colocalization by cross-correlation, a new method of colocalization suited for super-resolution microscopy
title_sort colocalization by cross correlation a new method of colocalization suited for super resolution microscopy
topic Colocalization
Image analysis
Image cross-correlation spectroscopy
Cross-correlation
Super-resolution
url https://doi.org/10.1186/s12859-024-05675-z
work_keys_str_mv AT andrewdmccall colocalizationbycrosscorrelationanewmethodofcolocalizationsuitedforsuperresolutionmicroscopy