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Probing Collagen Organization: Practical Guide for Second-Harmonic Generation (SHG) Imaging.

Riccardo Cicchi1,2, Francesco S Pavone3,4

  • 1National Institute of Optics, National Research Council (INO-CNR), Sesto Fiorentino, Italy. rcicchi@lens.unifi.it.

Methods in Molecular Biology (Clifton, N.J.)
|August 25, 2017
PubMed
Summary

Second-harmonic generation (SHG) microscopy images collagen label-free. This guide details SHG protocols for researchers studying fibrosis, offering crucial insights into collagen organization and its role in disease development.

Keywords:
CollagenDetectionForward backwardNumerical aperturePolarization scanningSHG microscopyTi:sapphire laser

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Area of Science:

  • Biomedical Optics
  • Microscopy Techniques
  • Connective Tissue Biology

Background:

  • Collagen organization is critical in fibrosis development and progression.
  • Label-free imaging is advantageous for biological sample analysis.
  • Second-harmonic generation (SHG) microscopy provides high-resolution, label-free imaging of collagen.

Purpose of the Study:

  • To provide researchers with essential protocols and tips for SHG microscopy of collagen.
  • To detail the application of SHG microscopy in fibrosis research.
  • To discuss the advantages and limitations of SHG for studying fibrosis.

Main Methods:

  • Utilizing nonlinear optical principles for coherent imaging.
  • Applying SHG microscopy for high-resolution collagen visualization.
  • Characterizing collagen organization at multiple hierarchical levels.

Main Results:

  • SHG microscopy enables detailed imaging of collagen structure.
  • The technique facilitates understanding of collagen's role in fibrotic processes.
  • Protocols and laboratory tips for effective SHG implementation are presented.

Conclusions:

  • SHG microscopy is an ideal tool for high-resolution collagen imaging and organization characterization.
  • This technique offers significant benefits for the study of fibrosis.
  • Understanding SHG microscopy is crucial for advancing fibrosis research.