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Updated: May 19, 2026
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Ligand Nano-cluster Arrays in a Supported Lipid Bilayer
Published on: April 23, 2017
Amphiphilic Lipid-Single-Stranded DNA Conjugate-Mediated Cell Surface Engineering for Programmable Intercellular
Sungjun Kim1, Chae Eun Lee2, Ashok Kumar Jangid2
1Immuno-Oncology Branch, Division of Rare and Refractory Cancer, Research Institute, National Cancer Center, Goyang 10408, Republic of Korea.
Biomaterials Research
|May 18, 2026
Summary
Researchers engineered cell surfaces using DNA to enhance immune cell interactions, improving cancer cell killing. This novel approach offers a versatile platform for immunotherapy and tissue engineering applications.
Area of Science:
- Biotechnology
- Immunology
- Materials Science
Background:
- Solid tumors present physical constraints limiting effective immune cell interactions and sustained engagement.
- Natural killer (NK) cell activation relies on stable immune synapses, often hindered by antigen heterogeneity and immune escape.
- Current strategies targeting tumor antigens are vulnerable to tumor evolution and immune evasion.
Purpose of the Study:
- To develop a controllable, receptor-independent method for regulating intercellular interfaces using DNA nanotechnology.
- To engineer cell surfaces to enhance effector-target cell engagement and immune synapse formation.
- To investigate the efficacy of this platform in disrupting solid tumors and facilitating NK cell-mediated cytotoxicity.
Main Methods:
- Utilized amphiphilic single-stranded DNA (ssDNA) constructs conjugated with lipids for cell membrane anchoring.
- Engineered sequence-specific cell association via DNA hybridization for controlled tethering.
- Developed thermally reversible ssDNA interactions for tunable dissociation of tethered cell pairs.
- Validated the platform's effectiveness in 2D cell cultures and 3D tumoroid models.
Main Results:
- Rapid and effective cell membrane modification was achieved with the ssDNA constructs.
- Complementary ssDNA pairing significantly enhanced effector-target cell tethering and stability.
- Increased secretion of cytotoxic granules and cytokines was observed, boosting anti-tumor activity.
- Demonstrated successful NK cell-mediated disruption of triple-negative breast cancer cells in 3D models.
Conclusions:
- Engineering intercellular physical properties via programmable ssDNA platforms can actively modulate immune synapse efficiency.
- This ssDNA-based surface engineering strategy provides a versatile framework for regulating cell-cell interfaces.
- The platform shows broad applicability in immunotherapy, tissue engineering, and cell-based therapeutics.
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