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Machine learning based classification of mitochondrial morphologies from fluorescence microscopy images of Toxoplasma gondii cysts

The mitochondrion is intimately linked to energy and overall metabolism and therefore the morphology of mitochondrion can be very informative for inferring the metabolic state of cells. In this study we report an approach for automatic classification of mitochondrial morphologies using supervised ma...

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Autores principales: Place, Brooke C., Troublefield, Cortni A., Murphy, Robert D., Sinai, Anthony P., Patwardhan, Abhijit R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9894464/
https://www.ncbi.nlm.nih.gov/pubmed/36730225
http://dx.doi.org/10.1371/journal.pone.0280746
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author Place, Brooke C.
Troublefield, Cortni A.
Murphy, Robert D.
Sinai, Anthony P.
Patwardhan, Abhijit R.
author_facet Place, Brooke C.
Troublefield, Cortni A.
Murphy, Robert D.
Sinai, Anthony P.
Patwardhan, Abhijit R.
author_sort Place, Brooke C.
collection PubMed
description The mitochondrion is intimately linked to energy and overall metabolism and therefore the morphology of mitochondrion can be very informative for inferring the metabolic state of cells. In this study we report an approach for automatic classification of mitochondrial morphologies using supervised machine learning to efficiently classify them from a large number of cells at a time. Fluorescence microscopy images of the chronic encysted form of parasite Toxoplasma gondii were used for this development. Manually classifying these morphologies from the hundreds of parasites within typical tissue cysts is tedious and error prone. In addition, because of inherent biological heterogeneity in morphologies, there can be variability and lack of reproducibility in manual classification. We used image segmentation to detect mitochondrial shapes and used features extracted from them in a multivariate logistic regression model to classify the detected shapes into five morphological classes: Blobs, Tadpoles, Lasso/Donuts, Arcs, and Other. The detected shapes from a subset of images were first used to obtain consensus classification among expert users to obtain a labeled set. The model was trained using the labeled set from five cysts and its performance was tested on the mitochondrial morphologies from ten other cysts that were not used in training. Results showed that the model had an average overall accuracy of 87%. There was high degree of confidence in the classification of Blobs and Arcs (average F scores 0.91 and 0.73) which constituted the majority of morphologies (85%). Although the current development used microscopy images from tissue cysts of Toxoplasma gondii, the approach is adaptable with minor adjustments and can be used to automatically classify morphologies of organelles from a variety of cells.
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spelling pubmed-98944642023-02-03 Machine learning based classification of mitochondrial morphologies from fluorescence microscopy images of Toxoplasma gondii cysts Place, Brooke C. Troublefield, Cortni A. Murphy, Robert D. Sinai, Anthony P. Patwardhan, Abhijit R. PLoS One Research Article The mitochondrion is intimately linked to energy and overall metabolism and therefore the morphology of mitochondrion can be very informative for inferring the metabolic state of cells. In this study we report an approach for automatic classification of mitochondrial morphologies using supervised machine learning to efficiently classify them from a large number of cells at a time. Fluorescence microscopy images of the chronic encysted form of parasite Toxoplasma gondii were used for this development. Manually classifying these morphologies from the hundreds of parasites within typical tissue cysts is tedious and error prone. In addition, because of inherent biological heterogeneity in morphologies, there can be variability and lack of reproducibility in manual classification. We used image segmentation to detect mitochondrial shapes and used features extracted from them in a multivariate logistic regression model to classify the detected shapes into five morphological classes: Blobs, Tadpoles, Lasso/Donuts, Arcs, and Other. The detected shapes from a subset of images were first used to obtain consensus classification among expert users to obtain a labeled set. The model was trained using the labeled set from five cysts and its performance was tested on the mitochondrial morphologies from ten other cysts that were not used in training. Results showed that the model had an average overall accuracy of 87%. There was high degree of confidence in the classification of Blobs and Arcs (average F scores 0.91 and 0.73) which constituted the majority of morphologies (85%). Although the current development used microscopy images from tissue cysts of Toxoplasma gondii, the approach is adaptable with minor adjustments and can be used to automatically classify morphologies of organelles from a variety of cells. Public Library of Science 2023-02-02 /pmc/articles/PMC9894464/ /pubmed/36730225 http://dx.doi.org/10.1371/journal.pone.0280746 Text en © 2023 Place et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Place, Brooke C.
Troublefield, Cortni A.
Murphy, Robert D.
Sinai, Anthony P.
Patwardhan, Abhijit R.
Machine learning based classification of mitochondrial morphologies from fluorescence microscopy images of Toxoplasma gondii cysts
title Machine learning based classification of mitochondrial morphologies from fluorescence microscopy images of Toxoplasma gondii cysts
title_full Machine learning based classification of mitochondrial morphologies from fluorescence microscopy images of Toxoplasma gondii cysts
title_fullStr Machine learning based classification of mitochondrial morphologies from fluorescence microscopy images of Toxoplasma gondii cysts
title_full_unstemmed Machine learning based classification of mitochondrial morphologies from fluorescence microscopy images of Toxoplasma gondii cysts
title_short Machine learning based classification of mitochondrial morphologies from fluorescence microscopy images of Toxoplasma gondii cysts
title_sort machine learning based classification of mitochondrial morphologies from fluorescence microscopy images of toxoplasma gondii cysts
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9894464/
https://www.ncbi.nlm.nih.gov/pubmed/36730225
http://dx.doi.org/10.1371/journal.pone.0280746
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