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Intrinsic Burst-Blinking Nanographenes for Super-Resolution Bioimaging.

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Researchers developed novel nanographene fluorophores for super-resolution microscopy. These intrinsic burst-blinking fluorophores enable versatile single-molecule localization microscopy (SMLM) applications, imaging cellular processes with high detail.

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Area of Science:

  • Biophysics
  • Nanotechnology
  • Cell Biology

Background:

  • Single-molecule localization microscopy (SMLM) requires specialized fluorophores for super-resolution imaging.
  • Intrinsic blinking fluorophores are rare, limiting SMLM's versatility.
  • Existing methods often require additives or are unsuitable for live-cell imaging.

Purpose of the Study:

  • To synthesize novel nanographene-based intrinsic burst-blinking fluorophores.
  • To demonstrate the versatility of these fluorophores in various SMLM applications.
  • To overcome limitations of current fluorophores in super-resolution imaging.

Main Methods:

  • Synthesis of nanographene-based intrinsic burst-blinking fluorophores.
  • Application of fluorophores in SMLM for imaging amyloid fibrils under different conditions.
  • Live-cell imaging of lysosome dynamics and nascent protein translation in neurons using click chemistry.

Main Results:

  • Successful imaging of amyloid fibrils in air and various pH solutions without additives.
  • Visualization of lysosome dynamics in live mammalian cells under physiological conditions.
  • High-resolution imaging of local protein translation at axonal branching in primary sensory neurons.

Conclusions:

  • Nanographene-based fluorophores offer intrinsic burst-blinking properties for SMLM.
  • These fluorophores significantly expand the applicability of SMLM in diverse biological systems.
  • The developed fluorophores show great potential for advancing super-resolution imaging techniques.