AuNRs-PPARγmAb Induce Targeted Adipocyte Apoptosis Through Photothermal Effects for Effective Localized Fat Reduction

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Plastic Surgery

Background:

• Non-invasive fat reduction technologies are advancing, but mechanisms and efficacy remain debated.
• Gold nanorods (AuNRs), known for cancer therapy, have unexplored potential in fat reduction.
• This study introduces a novel nanoplatform for photothermal fat reduction therapy.

Purpose of the Study:

• To design and evaluate a novel nanoplatform combining AuNRs with PPARγ monoclonal antibody (PPARγmAb).
• To assess the efficacy and biocompatibility of this nanoplatform for photothermal fat reduction.

Main Methods:

• AuNRs were functionalized with PPARγmAb.
• Adipose-derived stem cells were differentiated into adipocytes, and an obese mouse model was established.
• Cells and mice were treated with AuNRs-PPARγmAb and exposed to 808nm near-infrared (NIR) laser irradiation.

Main Results:

• AuNRs-PPARγmAb demonstrated enhanced retention in adipocytes and a stronger photothermal effect, inducing apoptosis.
• Significant reduction in adipose tissue weight, size, and thickness was observed in obese mice.
• No major histopathological damage or changes in hematological/organ function parameters were noted, confirming biocompatibility.

Conclusions:

• The AuNRs-PPARγmAb nanoplatform effectively targets adipocytes for photothermal fat reduction via NIR laser irradiation.
• This targeted approach offers a promising, minimally invasive, and specific method for localized fat reduction with fewer side effects.
• The nanoplatform shows significant potential for clinical application in non-surgical body contouring.