Natural bioactive lysosomes extracted from multiple cells for tumor therapy

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Cancer Biology

Background:

• Biological nanoparticles offer unique properties for therapeutic applications.
• Lysosomes, intracellular organelles, possess inherent biological functionality.
• Exploring novel nanoparticle sources is crucial for advanced drug development.

Purpose of the Study:

• To investigate lysosomes derived from distinct cell types as natural therapeutic nanoparticles for tumor therapy.
• To evaluate the in vitro and in vivo efficacy of these lysosomes in cancer treatment.
• To understand the mechanisms underlying lysosome-mediated tumor destruction.

Main Methods:

• Isolation of lysosomes from normal and activated immune cells.
• In vitro assessment of lysosome integrity, distribution, and biological activity (ROS generation, substrate disruption).
• In vivo intravenous administration of lysosomes to tumor-bearing models, followed by efficacy evaluation.

Main Results:

• Lysosomes maintained structural integrity and exhibited significant biological activity in vitro, inducing cancer cell death.
• In vivo studies demonstrated lysosome accumulation in tumor tissues.
• Lysosomes effectively destroyed tumor vasculature and degraded immunosuppressive proteins, leading to complete tumor regression in a single treatment.

Conclusions:

• Bioactive lysosomes serve as potent natural nanoparticles for effective tumor therapy.
• Lysosome-based therapy offers a promising alternative, especially for treatment-resistant cancers.
• This study provides valuable insights for developing novel nanoparticle-based cancer therapeutics.