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Zwitterionic Nanoconjugate Enables Safe and Efficient Lymphatic Drug Delivery
Bowen Li1,2, Zhefan Yuan2, Yuwei He2,3
1Department of Bioengineering, University of Washington, Seattle, Washington 98195, United States.
Nano Letters
|May 8, 2020
Summary
This study developed a method to improve drug delivery to the lymphatic system using poly(carboxy betaine) (PCB) polymers. This approach enhances lymphatic drug transport and reduces immune responses for treating lymph-related diseases.
Area of Science:
- Biomedical Engineering
- Drug Delivery
- Immunology
Background:
- The lymphatic system is a key pathway for disease spread, including tumor metastasis and viral infections.
- Current treatments face challenges in delivering sufficient therapeutic agents to lymphatics due to physiological barriers after subcutaneous injection.
- Subcutaneous delivery of biologic drugs can also trigger adverse immune responses.
Purpose of the Study:
- To develop a strategy for enhanced lymphatic drug delivery and reduced immunogenicity of protein therapeutics.
- To overcome the limitations of subcutaneous drug administration for lymph-related diseases.
Main Methods:
- Conjugating protein therapeutics with zwitterionic poly(carboxy betaine) (PCB) polymers.
- Utilizing l-asparaginase (ASP) as a model protein drug to assess PCB conjugation effects.
Main Results:
- PCB conjugation significantly promoted the diffusion of l-asparaginase (ASP) into the lymphatic system.
- The strategy effectively mitigated the immunogenicity associated with the protein drug.
Conclusions:
- PCB conjugation offers a promising platform for safe and efficient lymphatic drug delivery.
- This approach can facilitate the development of novel therapies for various lymph-related diseases.
