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Fluorescence lifetime imaging microscopy: fundamentals and advances in instrumentation, analysis, and applications
Significance: Fluorescence lifetime imaging microscopy (FLIM) is a powerful technique to distinguish the unique molecular environment of fluorophores. FLIM measures the time a fluorophore remains in an excited state before emitting a photon, and detects molecular variations of fluorophores that are...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Society of Photo-Optical Instrumentation Engineers
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7219965/ https://www.ncbi.nlm.nih.gov/pubmed/32406215 http://dx.doi.org/10.1117/1.JBO.25.7.071203 |
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author | Datta, Rupsa Heaster, Tiffany M. Sharick, Joe T. Gillette, Amani A. Skala, Melissa C. |
author_facet | Datta, Rupsa Heaster, Tiffany M. Sharick, Joe T. Gillette, Amani A. Skala, Melissa C. |
author_sort | Datta, Rupsa |
collection | PubMed |
description | Significance: Fluorescence lifetime imaging microscopy (FLIM) is a powerful technique to distinguish the unique molecular environment of fluorophores. FLIM measures the time a fluorophore remains in an excited state before emitting a photon, and detects molecular variations of fluorophores that are not apparent with spectral techniques alone. FLIM is sensitive to multiple biomedical processes including disease progression and drug efficacy. Aim: We provide an overview of FLIM principles, instrumentation, and analysis while highlighting the latest developments and biological applications. Approach: This review covers FLIM principles and theory, including advantages over intensity-based fluorescence measurements. Fundamentals of FLIM instrumentation in time- and frequency-domains are summarized, along with recent developments. Image segmentation and analysis strategies that quantify spatial and molecular features of cellular heterogeneity are reviewed. Finally, representative applications are provided including high-resolution FLIM of cell- and organelle-level molecular changes, use of exogenous and endogenous fluorophores, and imaging protein-protein interactions with Förster resonance energy transfer (FRET). Advantages and limitations of FLIM are also discussed. Conclusions: FLIM is advantageous for probing molecular environments of fluorophores to inform on fluorophore behavior that cannot be elucidated with intensity measurements alone. Development of FLIM technologies, analysis, and applications will further advance biological research and clinical assessments. |
format | Online Article Text |
id | pubmed-7219965 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Society of Photo-Optical Instrumentation Engineers |
record_format | MEDLINE/PubMed |
spelling | pubmed-72199652020-05-20 Fluorescence lifetime imaging microscopy: fundamentals and advances in instrumentation, analysis, and applications Datta, Rupsa Heaster, Tiffany M. Sharick, Joe T. Gillette, Amani A. Skala, Melissa C. J Biomed Opt Special Section on Selected Topics in Biophotonics: Fluorescence Lifetime Imaging and Optical Micromechanics Significance: Fluorescence lifetime imaging microscopy (FLIM) is a powerful technique to distinguish the unique molecular environment of fluorophores. FLIM measures the time a fluorophore remains in an excited state before emitting a photon, and detects molecular variations of fluorophores that are not apparent with spectral techniques alone. FLIM is sensitive to multiple biomedical processes including disease progression and drug efficacy. Aim: We provide an overview of FLIM principles, instrumentation, and analysis while highlighting the latest developments and biological applications. Approach: This review covers FLIM principles and theory, including advantages over intensity-based fluorescence measurements. Fundamentals of FLIM instrumentation in time- and frequency-domains are summarized, along with recent developments. Image segmentation and analysis strategies that quantify spatial and molecular features of cellular heterogeneity are reviewed. Finally, representative applications are provided including high-resolution FLIM of cell- and organelle-level molecular changes, use of exogenous and endogenous fluorophores, and imaging protein-protein interactions with Förster resonance energy transfer (FRET). Advantages and limitations of FLIM are also discussed. Conclusions: FLIM is advantageous for probing molecular environments of fluorophores to inform on fluorophore behavior that cannot be elucidated with intensity measurements alone. Development of FLIM technologies, analysis, and applications will further advance biological research and clinical assessments. Society of Photo-Optical Instrumentation Engineers 2020-05-13 2020-07 /pmc/articles/PMC7219965/ /pubmed/32406215 http://dx.doi.org/10.1117/1.JBO.25.7.071203 Text en © 2020 The Authors https://creativecommons.org/licenses/by/4.0/ Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI. |
spellingShingle | Special Section on Selected Topics in Biophotonics: Fluorescence Lifetime Imaging and Optical Micromechanics Datta, Rupsa Heaster, Tiffany M. Sharick, Joe T. Gillette, Amani A. Skala, Melissa C. Fluorescence lifetime imaging microscopy: fundamentals and advances in instrumentation, analysis, and applications |
title | Fluorescence lifetime imaging microscopy: fundamentals and advances in instrumentation, analysis, and applications |
title_full | Fluorescence lifetime imaging microscopy: fundamentals and advances in instrumentation, analysis, and applications |
title_fullStr | Fluorescence lifetime imaging microscopy: fundamentals and advances in instrumentation, analysis, and applications |
title_full_unstemmed | Fluorescence lifetime imaging microscopy: fundamentals and advances in instrumentation, analysis, and applications |
title_short | Fluorescence lifetime imaging microscopy: fundamentals and advances in instrumentation, analysis, and applications |
title_sort | fluorescence lifetime imaging microscopy: fundamentals and advances in instrumentation, analysis, and applications |
topic | Special Section on Selected Topics in Biophotonics: Fluorescence Lifetime Imaging and Optical Micromechanics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7219965/ https://www.ncbi.nlm.nih.gov/pubmed/32406215 http://dx.doi.org/10.1117/1.JBO.25.7.071203 |
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