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Natural Compound-Driven Nano-Self-Assembly for Multimechanistic Transdermal Antiobesity Therapy.

Lu Tang1,2,3, Qiaqia Xiao1,2, Siying Chen1,2

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Summary

This study presents a novel transdermal microneedle system using natural compounds curcumin and glycyrrhetinic acid to combat obesity. The innovative approach effectively reduces body weight and enhances energy expenditure in mice, offering a promising obesity treatment.

Keywords:
energy expendituremicroneedle patchnatural compoundobesitywhite adipose tissue browning

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Area of Science:

  • Biomedical Engineering
  • Pharmacology
  • Metabolic Disorders

Background:

  • Obesity is a complex metabolic disorder with limited effective treatments.
  • Natural compounds offer potential therapeutic benefits due to safety and multitarget mechanisms.
  • Current obesity treatments face challenges with efficacy, targeting, and side effects.

Purpose of the Study:

  • To develop an effective antiobesity strategy using a novel nanodrug delivery system.
  • To investigate the synergistic effects of curcumin and glycyrrhetinic acid for obesity management.
  • To evaluate a transdermal platform combined with photothermal therapy for obesity treatment.

Main Methods:

  • Self-assembly of curcumin (Cur) and glycyrrhetinic acid (GA) into carrier-free nanodrugs (CG NPs).
  • Incorporation of CG NPs into dissolvable microneedles (CG@BP/MN) coated with black phosphorus nanosheets for transdermal delivery.
  • Application of mild photothermal therapy to enhance drug delivery and therapeutic effects.
  • Assessment in a diet-induced obesity mouse model.

Main Results:

  • The CG@BP/MN system effectively delivered Cur and GA transdermally, promoting white adipose tissue browning and lipolysis.
  • Synergistic action of Cur and GA improved lipid metabolism, reduced inflammation, and enhanced insulin sensitivity.
  • Significant reduction in body weight, increased energy expenditure, and prevention of weight regain were observed in obese mice.
  • The treatment modulated macrophage polarization, indicating an anti-inflammatory effect.

Conclusions:

  • The developed nanodrug-loaded microneedle platform offers a safe and effective strategy for obesity management.
  • This approach shows promise for long-term obesity treatment by addressing key metabolic and inflammatory pathways.
  • The combination of natural compounds, nanotechnology, and photothermal therapy presents a clinically relevant therapeutic avenue.