Engineered nanoparticles could deliver better targeted cancer treatment
Scientists at 成人VR视频 and the Rosalind and Morris Goodman Cancer Institute have developed a new way to deliver cancer immunotherapy that caused fewer side effects compared to standard treatment in
The experimental approach is designed to treat cancer that has spread to the lymph nodes, a difficult-to-treat stage of the disease. Today, most immunotherapies are delivered by intravenous (IV) infusion and circulate throughout the body. This can trigger immune responses in healthy tissues, leading to serious side effects.
鈥淪ome immunotherapies cause such severe side effects that clinicians are forced to lower the dose, making treatment less effective,鈥� said senior author Guojun Chen, Assistant Professor in 成人VR视频鈥檚 Department of Biomedical Engineering and member of the Goodman Cancer Institute. 鈥淥ur approach could allow for higher, more effective doses while limiting toxicity, which is a major goal in cancer treatment.鈥�
How it works
To avoid effects throughout the body, researchers packaged an existing immunotherapy drug into engineered nanoparticles. The tiny particles travel through the bloodstream and release and activate the drug when they reach lymph nodes affected by cancer.
鈥淥ur nanoparticles can sense a molecule that鈥檚 abundant in cancerous lymph nodes. When they detect it, they activate the drug exactly where it鈥檚 needed, while in healthy tissues, the drugs remains inactivated and eventually degraded鈥� Chen said, who is also the Canada Research Chair in Biomaterials and Biomacromolecule Delivery.
Published in the (PNAS), the results from mouse models demonstrate the nanoparticles reduced harmful side effects and improved effectiveness compared with standard IV immunotherapy.
The approach helps address a key challenge in cancer care. Lymph nodes affected by cancer are often surgically removed, a step that can weaken the immune system.
鈥淟ymph nodes are essential immune organs,鈥� said first author Yueyang Deng, a postdoctoral researcher in the at 成人VR视频. 鈥淲ith this approach, we can potentially treat the disease while preserving the immune system鈥檚 normal function.鈥�
Engineering meets cancer care
More broadly, the breakthrough highlights how engineering is reshaping cancer research.
鈥渕RNA vaccines are a great example of what nanomedicine can achieve, and there鈥檚 tremendous potential as cancer biology and materials science come together,鈥� said Chen.
The team is now evaluating safety in other preclinical studies before initiating any clinical trials.
About the study
鈥溾�� by Yueyang Deng, Mo Chen, Tianxu Fang, Tianwen Luo, Xiaona Cao, and Guojun Chen was published in Proceedings of the National Academy of Science (PNAS).
Funding was provided by the Canadian Institutes of Health Research, Canada Research Chairs Program and Fonds de recherche du Qu茅bec.