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Engineered microbubbles decorated with red emitting carbon nanoparticles for efficient delivery and imaging.

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Summary

Researchers modified carbon nanoparticles (CNPs) by loading them onto microbubbles (MBs). This altered cellular uptake pathways, enabling new strategies for drug delivery and overcoming resistance.

Keywords:
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Area of Science:

  • Nanotechnology
  • Cell Biology
  • Biomedical Imaging

Background:

  • Altering cellular uptake routes can address drug-receptor adaptation issues.
  • Carbon nanoparticles (CNPs) offer imaging capabilities beyond tissue autofluorescence.

Purpose of the Study:

  • To synthesize red-emitting CNPs and load them onto lipid microbubbles (MBs).
  • To investigate the cellular uptake mechanism of CNP-loaded MBs (CNP-MBs).
  • To evaluate the potential of CNP-MBs for altering cellular uptake pathways.

Main Methods:

  • Synthesis of red-emitting CNPs and their incorporation onto lipid MBs.
  • Characterization using atomic force microscopy and confocal microscopy.
  • Cellular uptake studies with NIH 3T3 cells and in vivo studies in Zebrafish larvae.

Main Results:

  • Successful loading of CNPs onto MBs confirmed by microscopy.
  • CNPs were observed inside treated cells, with minimal toxicity.
  • CNP-MBs altered uptake from clathrin-mediated endocytosis to micropinocytosis and sonophoresis (with ultrasound).

Conclusions:

  • Loading CNPs onto MBs effectively alters cellular uptake mechanisms.
  • This reformulation strategy shows promise for overcoming drug delivery challenges.
  • CNP-MBs demonstrate potential for enhanced cellular uptake and imaging applications.