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Related Concept Videos

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as visible light. Fluorochromes include naturally fluorescent substances (such as chlorophylls) and fluorescent stains that are added to the specimen to create contrast. Dyes such as Texas red and FITC are examples of fluorochromes. Other examples include the nucleic acid dyes 4’,6’-diamidino-2-phenylindole (DAPI), and acridine orange.
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DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
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A Bright NIR-II Fluorescence Probe for Vascular and Tumor Imaging
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Alternative fluorophores designed for advanced molecular imaging.

Lara G Freidus1, Priyamvada Pradeep1, Pradeep Kumar1

  • 1Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown 2193, Johannesburg, South Africa.

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Novel fluorescent probes are essential for advanced molecular imaging and single-molecule detection. This review details recent developments in smart fluorescent probes and microscopy techniques for enhanced biological visualization.

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Area of Science:

  • Biochemistry
  • Microscopy
  • Molecular Biology

Background:

  • Fluorescent molecular imaging has rapidly advanced, necessitating new fluorophores for high-resolution microscopy.
  • Visualizing intracellular molecular events requires innovative fluorescent tools.
  • The demand for novel fluorophores drives significant research and development.

Purpose of the Study:

  • To review recent advancements in novel fluorophores for molecular imaging.
  • To discuss the application of new fluorophores in single-molecule detection.
  • To highlight key microscopy techniques relevant to fluorophore development.

Main Methods:

  • Review of recent scientific literature on fluorophore development.
  • Discussion of single-molecule imaging techniques.
  • Analysis of smart fluorescent probes and their design principles.
  • Exploration of two-photon microscopy, Förster resonance energy transfer (FRET), and super-resolution microscopy.

Main Results:

  • Significant progress has been made in designing novel fluorophores with diverse applications.
  • Rationally designed fluorophores offer vast possibilities for molecular imaging.
  • New fluorophores are continuously being developed to meet the demands of advanced microscopy.

Conclusions:

  • Novel fluorophores are critical for the continued advancement of molecular imaging and single-molecule detection.
  • The integration of new fluorophores with techniques like super-resolution microscopy enhances biological insights.
  • Future developments promise even greater capabilities in visualizing molecular processes.