Deoxyribonucleic Acid-Based Polyvalent Ligand-Receptor Binding for Engineering the Cell Surface with Nanoparticles.

Area of Science:

• Biotechnology
• Nanotechnology
• Molecular Biology

Background:

• Cell surface tethering of nanoparticles (NPs) is crucial for applications like targeted delivery and cell therapy.
• Existing NP attachment methods often require complex cell surface modifications or exhibit low efficiency.
• Limitations include the need for chemical conjugation and the use of potentially cytotoxic cationic polymers.

Purpose of the Study:

• To investigate a DNA-based synthetic ligand-receptor system for efficient NP attachment to live cells.
• To develop a method that bypasses the need for complicated cell surface modifications.
• To establish a non-cytotoxic approach for NP-cell binding.

Main Methods:

• Functionalization of NPs with polyvalent DNA ligand mimics.
• Functionalization of live cell membranes with DNA-based cell receptor mimics.
• Utilizing base pair-directed polyvalent hybridization for NP-cell binding.

Main Results:

• Achieved rapid and efficient binding of NPs to cells via DNA hybridization.
• Demonstrated that the NP attachment process does not require chemical conjugation on the cell membrane.
• Confirmed the absence of cytotoxic cationic polymers in the NP attachment procedure.

Conclusions:

• DNA-based polyvalent ligand-receptor binding offers a promising strategy for NP-cell attachment.
• This method is suitable for cell surface engineering and nanoparticle delivery applications.
• The approach is efficient, rapid, and avoids cell membrane chemical modification and cytotoxic agents.