Lipid Nanoparticles with DNA-Binding Proteins for Safer DNA Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current non-viral lipid delivery systems for DNA are inefficient due to the larger size of DNA molecules, requiring viral vectors or physical methods that pose cytotoxic risks and are limited to small DNA lengths, and lack effective delivery across the nuclear envelope.
Innovation Solution
Incorporation of a DNA-binding protein or peptide into lipid nanoparticles, which can stabilize DNA, facilitate nuclear import, reduce toxicity, and inhibit Toll-like receptor induction, enhancing DNA delivery efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cationic lipids are used to form delivery vehicles for DNA, then DNA delivery efficiency is improved, but cytotoxicity and adverse side effects increase
Solution Approach 1:
The patent introduces a cationic peptide as an intermediary component that mediates between the cationic lipid and DNA. The peptide binds to DNA and forms a complex with the cationic lipid, reducing the direct toxic interaction between cationic lipids and cellular components while maintaining delivery efficiency. This intermediary role of the peptide resolves the contradiction by decoupling the delivery function from the toxic effect.
Solution Approach 2:
The invention creates a composite delivery system comprising cationic lipid, cationic peptide, and DNA. This composite material combines the delivery efficiency of cationic lipids with the biocompatibility and DNA-binding capabilities of cationic peptides, achieving both high delivery efficiency and reduced cytotoxicity simultaneously.
2Productivity
If viral vectors or physical methods are used for DNA delivery, then delivery capability is improved, but cytotoxic risks and limitations on DNA length increase
Solution Approach 1:
The cationic peptide acts as a mediator that enables non-viral delivery systems to achieve viral-level delivery efficiency. By facilitating DNA condensation and cellular uptake, the peptide allows plasmid DNA and other large DNA molecules to be delivered effectively without the cytotoxicity associated with viral vectors or physical methods.
3Object-affected harmful factors
If non-viral lipid delivery systems are used, then safety is improved, but delivery efficiency for large DNA molecules deteriorates
Solution Approach 1:
The patent develops a composite non-viral delivery system combining cationic lipid, cationic peptide, and DNA. This composite material overcomes the size limitation of conventional non-viral systems by using the peptide-DNA complex to protect and deliver large plasmid DNA molecules efficiently while maintaining the safety advantages of non-viral approaches.
Data Source
AI summary
The present disclosure relates to lipid nanoparticles for delivery of DNA, the lipid nanoparticle comprising therein a DNA-binding protein or peptide bound to the DNA, and uses thereof.