Liposomal Nanotechnology Breakthrough Enhances Precision and Efficacy of Photodynamic Cancer Therapies at University of Johannesburg

University of Johannesburg researchers use liposomal nanotechnology to improve the precision of light-activated cancer treatments and reduce side effects.

By: AXL Media

Published: Mar 27, 2026, 10:04 AM EDT

Source: Information for this report was sourced from Frontiers Journals.

Advancing the Precision of Light-Activated Cancer Treatment

Photodynamic therapy has long promised a guided missile approach to oncology, utilizing light to activate specialized drugs known as photosensitizers directly within a tumor. According to Professor Heidi Abrahamse, the mechanism relies on a delicate interaction between light, photosensitive molecules, and internal oxygen levels to generate reactive species that kill malignant cells. However, the primary challenge has always been ensuring these drugs reach the target without degrading or causing unintended damage elsewhere. By integrating liposomal nanotechnology, researchers can now package these drugs in tiny, fat-based carriers that shield the medication until it reaches the disease site, marking a major shift toward personalized and targeted medical interventions.

The Role of Liposomes in Protecting Intravenous Drug Stability

One of the most significant hurdles in photodynamic therapy is the instability of photosensitizers when they enter the human bloodstream. These drugs are often prone to premature activation or rapid clearance by the body's immune system before they can accumulate in a tumor. The team at the Laser Research Centre found that by using liposomes, they can create a protective barrier that maintains the drug's integrity during transit. This nanomedicine strategy ensures that a much higher concentration of the therapeutic agent reaches the specific coordinates of the cancer, allowing for a more potent reaction once the light is finally applied.

Minimizing Collateral Damage Through Advanced Selectivity

Standard cancer treatments often suffer from a lack of selectivity, causing debilitating side effects by attacking healthy and cancerous tissues alike. According to the research findings, liposome-assisted therapy offers a significant reduction in these adverse outcomes by ensuring the toxic reaction is strictly localized. Because the photosensitizer remains dormant inside its fat-based shell until it is triggered by a specific wavelength of light, the treatment remains inert in healthy parts of the body. This level of precision not only improves the therapeutic outcome but also drastically enhances the quality of life for patients undergoing intensive oncology protocols.