# Gel Microspheres as Multifunctional Carriers for Photodynamic Therapy: Advancing Hepatocellular Carcinoma Treatment

## TL;DR

This review explores gel microspheres as a promising new approach for treating liver cancer with photodynamic therapy, offering better targeting and fewer side effects.

## Contribution

The paper introduces gel microspheres as a multifunctional platform for photodynamic therapy in hepatocellular carcinoma.

## Key findings

- Gel microspheres enable targeted delivery and controlled release of photosensitizers in the tumor microenvironment.
- They show synergistic effects when combined with chemotherapy, radiotherapy, and immunotherapy.
- Challenges include material parameter control and clinical translation barriers.

## Abstract

Conventional hepatocellular carcinoma (HCC) treatments suffer from insufficient efficacy and severe toxic side effects. This review addresses these issues by focusing on gel microsphere-mediated photodynamic therapy (PDT) as a novel strategy. It outlines the core properties, classifications, and stimulus-responsive mechanisms of gel microspheres, as well as their structure-function compatibility with photosensitizers. The work highlights how gel microspheres enable targeted delivery, tumor microenvironment-responsive release, and synergistic effects with chemotherapy, radiotherapy, and immunotherapy to enhance therapeutic efficacy while reducing off-target damage. Additionally, it discusses current challenges including material parameter controllability and clinical translation hurdles, providing insights for the development of precise and personalized HCC treatments.