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Updated: Jan 16, 2026
One Minute, Sub-One-Watt Photothermal Tumor Ablation Using Porphysomes, Intrinsic Multifunctional Nanovesicles
Published on: September 17, 2013
Exosomes/MoS2 complex for targeting and effective photothermal therapy.
Liyan Wang1, Huizhi Chen1,2, Haiyan Qiu1
1Dongguan Key Laboratory of Advanced Drug Delivery and Biosensing Research and Development, The First Dongguan Affiliated Hospital, School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China.
Engineered exosomes loaded with molybdenum disulfide nanodots (MoS2@ME) enhance tumor targeting for photothermal therapy (PTT). This novel complex effectively eliminates cancer cells in vitro and in vivo, offering a promising strategy for improved cancer treatment.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Oncology
Background:
- Photothermal therapy (PTT) is a promising cancer treatment.
- Molybdenum disulfide (MoS2) nanomaterials show high photothermal conversion efficiency.
- Improving tumor-targeting capability of PTT agents is crucial for effective treatment.
Purpose of the Study:
- To develop a novel exosomes/MoS2 complex (MoS2@ME) for enhanced tumor-targeted PTT.
- To evaluate the efficacy of MoS2@ME in vitro and in vivo.
Main Methods:
- MoS2 nanodots were incorporated into MCF-7 exosomes via ultrasonic self-assembly.
- In vitro cytotoxicity assays were performed on MCF-7 and 4T1 cells.
- In vivo studies involved intravenous injection into 4T1 tumor-bearing mice followed by near-infrared (NIR) irradiation.
Main Results:
- MoS2@ME demonstrated significant photothermal conversion, causing nearly 100% cell necrosis in vitro.
- MoS2@ME accumulated efficiently at tumor sites in vivo.
- NIR irradiation of MoS2@ME-treated tumors rapidly increased temperature (up to 52.3°C) and significantly reduced tumor volume and weight, leading to complete tumor disappearance in some cases.
Conclusions:
- MoS2@ME exhibits excellent tumor targeting and photothermal effects for effective PTT.
- This approach overcomes limitations of traditional photothermal nanomaterials, improving safety and efficacy.
- MoS2@ME represents a promising strategy for advanced cancer therapy.
