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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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Multispectral Real-time Fluorescence Imaging for Intraoperative Detection of the Sentinel Lymph Node in Gynecologic Oncology
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Future in precise surgery: Fluorescence-guided surgery using EVs derived fluorescence contrast agent.

Jian-Xuan Sun1, Jin-Zhou Xu1, Ye An1

  • 1Department and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095 Jiefang Avenue, 430030 Wuhan, China.

Journal of Controlled Release : Official Journal of the Controlled Release Society
|December 10, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces extracellular vesicles (EVs) as a novel platform for creating safer, more effective fluorescence contrast agents for fluorescence-guided surgery (FGS). This approach aims to improve tumor resection accuracy and organ function preservation.

Keywords:
Drug deliveryEngineered EVExosomeExtracellular vesiclesFluorescence-guided surgery

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Surgical Oncology

Background:

  • Surgery faces challenges like positive margins and organ damage, limiting tumor resection effectiveness.
  • Fluorescence-guided surgery (FGS) enhances tumor visualization but relies on synthetic contrast agents with safety and specificity issues.
  • Extracellular vesicles (EVs) offer biocompatibility and targeting capabilities, presenting an alternative for drug delivery and imaging.

Approach:

  • This review synthesizes knowledge on FGS, EV characteristics, and engineered EVs.
  • A novel strategy for producing EV-based fluorescence contrast agents for FGS is proposed.
  • The focus is on leveraging EVs' properties for improved surgical guidance.

Key Points:

  • Existing synthetic contrast agents for FGS have limitations in safety, specificity, and biocompatibility.
  • Engineered EVs show promise in drug delivery due to their inherent safety and targeting abilities.
  • This work highlights the potential of EVs as a superior platform for developing FGS contrast agents.

Conclusions:

  • EVs loaded with fluorophores represent a promising strategy for developing advanced fluorescence contrast agents.
  • This approach could overcome the limitations of current agents, enhancing precision in tumor resection.
  • The proposed EV-based strategy aims to improve outcomes in fluorescence-guided surgery by balancing tumor removal with organ function preservation.