More than double the fun with two-photon excitation microscopy

Abstract For generations researchers have been observing the dynamic processes of life through the lens of a microscope. This has offered tremendous insights into biological phenomena that span multiple orders of time- and length-scales ranging from the pure magic of molecular reorganization at the...

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Main Authors: Peter Luu, Scott E. Fraser, Falk Schneider
Format: Article
Language:English
Published: Nature Portfolio 2024-03-01
Series:Communications Biology
Online Access:https://doi.org/10.1038/s42003-024-06057-0
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author Peter Luu
Scott E. Fraser
Falk Schneider
author_facet Peter Luu
Scott E. Fraser
Falk Schneider
author_sort Peter Luu
collection DOAJ
description Abstract For generations researchers have been observing the dynamic processes of life through the lens of a microscope. This has offered tremendous insights into biological phenomena that span multiple orders of time- and length-scales ranging from the pure magic of molecular reorganization at the membrane of immune cells, to cell migration and differentiation during development or wound healing. Standard fluorescence microscopy techniques offer glimpses at such processes in vitro, however, when applied in intact systems, they are challenged by reduced signal strengths and signal-to-noise ratios that result from deeper imaging. As a remedy, two-photon excitation (TPE) microscopy takes a special place, because it allows us to investigate processes in vivo, in their natural environment, even in a living animal. Here, we review the fundamental principles underlying TPE aimed at basic and advanced microscopy users interested in adopting TPE for intravital imaging. We focus on applications in neurobiology, present current trends towards faster, wider and deeper imaging, discuss the combination with photon counting technologies for metabolic imaging and spectroscopy, as well as highlight outstanding issues and drawbacks in development and application of these methodologies.
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spelling doaj.art-0c91252f46e94ffbbbff264b4994bd6f2024-03-31T11:29:12ZengNature PortfolioCommunications Biology2399-36422024-03-017111510.1038/s42003-024-06057-0More than double the fun with two-photon excitation microscopyPeter Luu0Scott E. Fraser1Falk Schneider2Translational Imaging Center, Michelson Center for Convergent Bioscience, University of Southern CaliforniaTranslational Imaging Center, Michelson Center for Convergent Bioscience, University of Southern CaliforniaTranslational Imaging Center, Michelson Center for Convergent Bioscience, University of Southern CaliforniaAbstract For generations researchers have been observing the dynamic processes of life through the lens of a microscope. This has offered tremendous insights into biological phenomena that span multiple orders of time- and length-scales ranging from the pure magic of molecular reorganization at the membrane of immune cells, to cell migration and differentiation during development or wound healing. Standard fluorescence microscopy techniques offer glimpses at such processes in vitro, however, when applied in intact systems, they are challenged by reduced signal strengths and signal-to-noise ratios that result from deeper imaging. As a remedy, two-photon excitation (TPE) microscopy takes a special place, because it allows us to investigate processes in vivo, in their natural environment, even in a living animal. Here, we review the fundamental principles underlying TPE aimed at basic and advanced microscopy users interested in adopting TPE for intravital imaging. We focus on applications in neurobiology, present current trends towards faster, wider and deeper imaging, discuss the combination with photon counting technologies for metabolic imaging and spectroscopy, as well as highlight outstanding issues and drawbacks in development and application of these methodologies.https://doi.org/10.1038/s42003-024-06057-0
spellingShingle Peter Luu
Scott E. Fraser
Falk Schneider
More than double the fun with two-photon excitation microscopy
Communications Biology
title More than double the fun with two-photon excitation microscopy
title_full More than double the fun with two-photon excitation microscopy
title_fullStr More than double the fun with two-photon excitation microscopy
title_full_unstemmed More than double the fun with two-photon excitation microscopy
title_short More than double the fun with two-photon excitation microscopy
title_sort more than double the fun with two photon excitation microscopy
url https://doi.org/10.1038/s42003-024-06057-0
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