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Gene-encoding DNA origami for mammalian cell expression.

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DNA origami nanostructures can deliver genes into mammalian cells for expression. Optimizing DNA origami with specific sequences enhances gene delivery efficiency and enables co-delivery of multiple genes.

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Area of Science:

  • Nanotechnology
  • Molecular Biology
  • Gene Therapy

Background:

  • DNA origami allows for the creation of custom nanoscale objects.
  • Gene delivery is crucial for various therapeutic and research applications.
  • Current gene delivery methods face limitations in efficiency and control.

Purpose of the Study:

  • To demonstrate the expression of genes from DNA origami objects in mammalian cells.
  • To enhance gene expression efficiency using optimized DNA origami designs.
  • To enable controlled co-delivery and expression of multiple genes using DNA origami.

Main Methods:

  • Designing and folding single-strand DNA scaffolds into custom origami objects encoding genes.
  • Delivering DNA origami objects into mammalian cells.
  • Optimizing expression cassettes with functional sequences, including inverted terminal repeat (ITR) motifs.
  • Assembling gene-encoding DNA origami bricks into multimeric objects for co-delivery.

Main Results:

  • Genes successfully expressed from DNA origami objects delivered to mammalian cells.
  • Gene expression efficiency was significantly enhanced by incorporating and tuning functional sequences and structures.
  • Virus-inspired ITR hairpin motifs improved gene expression.
  • Multimeric DNA origami objects enabled stoichiometrically controlled co-delivery and expression of multiple genes.

Conclusions:

  • DNA origami is a versatile platform for gene delivery applications.
  • Optimized DNA origami designs can achieve efficient gene expression in mammalian cells.
  • This framework supports the development of advanced gene delivery systems using DNA nanotechnology.