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Related Concept Videos

Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...

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Related Experiment Video

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NIR-II Absorption/Emission Dual Function Based 2D Targeted Nanotheranostics for Tunable Hydrogenothermal Therapy.

Jinxuan Li1, Mengting Gao1, Yuhang Wang1

  • 1Department of Orthopedics, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China.

Advanced Healthcare Materials
|May 30, 2024
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Summary

This study introduces a novel nanoplatform for enhanced photothermal therapy (PTT). The integrated system improves tumor treatment by combining imaging, targeted drug delivery, and protective antioxidant properties for safer, more effective cancer therapy.

Keywords:
NIR‐II fluorescence imaginginflammatory chemicalsphotoacoustic imagingphotothermal therapyreactive oxygen species

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Oncology

Background:

  • Photothermal therapy (PTT) shows promise for cancer treatment but faces challenges like poor delivery, uneven heating, and damage to healthy tissues due to reactive oxygen species (ROS) and inflammation.
  • Current PTT methods struggle with precise control over treatment duration and localized heat distribution, limiting clinical efficacy and safety.

Purpose of the Study:

  • To develop an integrated nanoplatform for multimodal imaging and synergistic hydrogen (H2)-based photothermal therapy.
  • To overcome the limitations of conventional PTT by enhancing delivery efficiency, ensuring uniform heat distribution, and protecting surrounding healthy tissues.

Main Methods:

  • Designed a nanoplatform combining a second near-infrared window (NIR-II) fluorescence imaging agent (CQ4T) with Ti3C2 (TC) for photothermal and photoacoustic (PA) properties.
  • Incorporated acid-responsive H2 release for synergistic therapy and utilized Ti3C2-BSA-CQ4T-H2 (TCBCH) for its antioxidant and anti-inflammatory effects.

Main Results:

  • The nanoplatform enabled real-time monitoring and guidance of photothermal treatment via NIR-II fluorescence and PA imaging.
  • Synergistic photothermal therapy using released H2 demonstrated effective tumor cell eradication.
  • The nanoplatform (TCBCH) exhibited significant antioxidant and anti-inflammatory activity, protecting peritumoral normal cells.

Conclusions:

  • The developed H2 delivery nanoplatform offers a promising multimodal imaging and therapeutic strategy for effective and secure tumor treatment.
  • This integrated approach addresses key limitations of PTT, paving the way for potential clinical applications.