Unravelling the Mystery inside Cells by Using Single-Molecule Fluorescence Imaging

Live-cell imaging is a powerful technique to study the dynamics and mechanics of various biological molecules like proteins, organelles, DNA, and RNA. With the rapid evolution of optical microscopy, our understanding of how these molecules are implicated in the cells’ most critical physiological rol...

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Main Authors: Julian Zalejski, Jiachen Sun, Ashutosh Sharma
Format: Article
Language:English
Published: MDPI AG 2023-09-01
Series:Journal of Imaging
Subjects:
Online Access:https://www.mdpi.com/2313-433X/9/9/192
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author Julian Zalejski
Jiachen Sun
Ashutosh Sharma
author_facet Julian Zalejski
Jiachen Sun
Ashutosh Sharma
author_sort Julian Zalejski
collection DOAJ
description Live-cell imaging is a powerful technique to study the dynamics and mechanics of various biological molecules like proteins, organelles, DNA, and RNA. With the rapid evolution of optical microscopy, our understanding of how these molecules are implicated in the cells’ most critical physiological roles deepens. In this review, we focus on how spatiotemporal nanoscale live-cell imaging at the single molecule level allows for profound contributions towards new discoveries in life science. This review will start by summarizing how single-molecule tracking has been used to analyze membrane dynamics, receptor–ligand interactions, protein–protein interactions, inner- and extra-cellular transport, gene expression/transcription, and whole organelle tracking. We then move on to how current authors are trying to improve single-molecule tracking and overcome current limitations by offering new ways of labeling proteins of interest, multi-channel/color detection, improvements in time-lapse imaging, and new methods and programs to analyze the colocalization and movement of targets. We later discuss how single-molecule tracking can be a beneficial tool used for medical diagnosis. Finally, we wrap up with the limitations and future perspectives of single-molecule tracking and total internal reflection microscopy.
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spelling doaj.art-c230d3a8c8974abca34aa99ecd1e6f9a2023-11-19T11:24:51ZengMDPI AGJournal of Imaging2313-433X2023-09-019919210.3390/jimaging9090192Unravelling the Mystery inside Cells by Using Single-Molecule Fluorescence ImagingJulian Zalejski0Jiachen Sun1Ashutosh Sharma2Department of Chemistry, University of Illinois Chicago, Chicago, IL 60607, USADepartment of Chemistry, University of Illinois Chicago, Chicago, IL 60607, USADepartment of Chemistry, University of Illinois Chicago, Chicago, IL 60607, USALive-cell imaging is a powerful technique to study the dynamics and mechanics of various biological molecules like proteins, organelles, DNA, and RNA. With the rapid evolution of optical microscopy, our understanding of how these molecules are implicated in the cells’ most critical physiological roles deepens. In this review, we focus on how spatiotemporal nanoscale live-cell imaging at the single molecule level allows for profound contributions towards new discoveries in life science. This review will start by summarizing how single-molecule tracking has been used to analyze membrane dynamics, receptor–ligand interactions, protein–protein interactions, inner- and extra-cellular transport, gene expression/transcription, and whole organelle tracking. We then move on to how current authors are trying to improve single-molecule tracking and overcome current limitations by offering new ways of labeling proteins of interest, multi-channel/color detection, improvements in time-lapse imaging, and new methods and programs to analyze the colocalization and movement of targets. We later discuss how single-molecule tracking can be a beneficial tool used for medical diagnosis. Finally, we wrap up with the limitations and future perspectives of single-molecule tracking and total internal reflection microscopy.https://www.mdpi.com/2313-433X/9/9/192protein–protein interactionmedical diagnosticscell imaging and signalingtotal internal reflection fluorescenceprotein dynamics
spellingShingle Julian Zalejski
Jiachen Sun
Ashutosh Sharma
Unravelling the Mystery inside Cells by Using Single-Molecule Fluorescence Imaging
Journal of Imaging
protein–protein interaction
medical diagnostics
cell imaging and signaling
total internal reflection fluorescence
protein dynamics
title Unravelling the Mystery inside Cells by Using Single-Molecule Fluorescence Imaging
title_full Unravelling the Mystery inside Cells by Using Single-Molecule Fluorescence Imaging
title_fullStr Unravelling the Mystery inside Cells by Using Single-Molecule Fluorescence Imaging
title_full_unstemmed Unravelling the Mystery inside Cells by Using Single-Molecule Fluorescence Imaging
title_short Unravelling the Mystery inside Cells by Using Single-Molecule Fluorescence Imaging
title_sort unravelling the mystery inside cells by using single molecule fluorescence imaging
topic protein–protein interaction
medical diagnostics
cell imaging and signaling
total internal reflection fluorescence
protein dynamics
url https://www.mdpi.com/2313-433X/9/9/192
work_keys_str_mv AT julianzalejski unravellingthemysteryinsidecellsbyusingsinglemoleculefluorescenceimaging
AT jiachensun unravellingthemysteryinsidecellsbyusingsinglemoleculefluorescenceimaging
AT ashutoshsharma unravellingthemysteryinsidecellsbyusingsinglemoleculefluorescenceimaging