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Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications
Published on: February 7, 2021
High-Preservation Single-Cell Operation through a Photo-responsive Hydrogel-Nanopipette System
Zi-Yuan Li1, Ying-Ya Liu1, Yuan-Jie Li1
1Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China.
A novel photo-responsive hydrogel-nanopipette system enables non-invasive single-cell operations. This light-triggered approach ensures high cell viability and precise, dose-controlled drug delivery for improved cell therapy.
Area of Science:
- Biotechnology
- Nanotechnology
- Cell Biology
Background:
- Nanopipette systems are crucial for intracellular process elucidation and therapy improvement.
- Conventional nanopipette operations often use high electric potential or organic solvents, causing cell damage.
- Existing methods face challenges in achieving non-invasive, high-resolution single-cell manipulation.
Purpose of the Study:
- To develop a photo-responsive hydrogel-nanopipette hybrid system for non-invasive single-cell operations.
- To overcome limitations of traditional nanopipette techniques regarding cell damage and operational disturbances.
- To enable precise, dose-controllable single-cell drug delivery with minimal impact on cell viability.
Main Methods:
- Fabrication of a photo-responsive hydrogel-nanopipette hybrid system.
- Implementation of a light-triggered mechanism for potential-free, non-invasive single-cell injection.
- Assessment of cell viability and drug delivery efficacy using doxorubicin in cell lines.
Main Results:
- The system achieved single-cell operation with high spatial/temporal resolution and negligible cell damage.
- A high cell viability rate of 90% was maintained due to the non-invasive, potential-free injection.
- Precisely dose-controllable single-cell drug delivery was demonstrated, with significantly reduced lethal doses of doxorubicin.
Conclusions:
- The photo-responsive hydrogel-nanopipette system offers a promising approach for advanced single-cell studies and therapies.
- This technology overcomes key limitations of conventional nanopipette methods, enhancing cell survival.
- The precise and non-invasive nature of this system facilitates efficient intracellular drug delivery and potential therapeutic applications.
