Glycan-Targeted Lipid Nanoparticles for Selective Dendritic Cell Delivery
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Solution Overview
Problem
Existing lipid nanoparticles (LNPs) lack selective delivery functionality and are costly to manufacture, making them inefficient for targeted delivery of therapeutic agents to specific cell types, such as dendritic cells.
Innovation Solution
A bi-functional compound with a glycan-based cell-targeting moiety and lipid moiety is incorporated into lipid nanoparticles to enhance selective delivery, specifically targeting dendritic cells by binding to receptors like DC-SIGN, Siglec-1, Siglec-2, or Siglec-5/E, and formulated with ionizable and helper lipids to improve encapsulation and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lipid nanoparticles are used for drug delivery, then solubility and penetration of drug molecules are improved, but selective delivery to specific cell types cannot be achieved
Solution Approach 1:
The patent applies composite materials by combining conventional lipid nanoparticle components with glycan-based targeting moieties. The LNP formulation includes ionizable lipids, helper lipids, and glycan-conjugated lipids that provide both delivery functionality and cell-specific targeting capability. This composite approach enables the nanoparticle to simultaneously achieve solubility enhancement, penetration, and selective delivery to dendritic cells via glycan-receptor interactions.
2Stability of the object's composition
If lipid nanoparticles are developed to encapsulate and stabilize mRNA molecules, then stability and protection in transit are improved, but manufacturing cost increases and localized selectivity is lost
Solution Approach 1:
The patent applies local quality by incorporating glycan-based targeting moieties at specific locations on the lipid nanoparticle surface. Rather than modifying the entire nanoparticle structure, the glycan-conjugated lipids are integrated into the LNP formulation at controlled concentrations (e.g., 0.1-10 mol%). This localized functionalization provides targeting capability while maintaining the core stabilizing function of the lipid nanoparticle and reducing manufacturing complexity compared to fully customized targeted delivery systems.
3Reliability
If conventional lipid nanoparticles are used, then drug delivery is achieved, but delivery to specific cell types such as dendritic cells lacks selectivity
Solution Approach 1:
The patent applies universality by designing a glycan-based targeting moiety that can be integrated into conventional LNP formulations without requiring fundamentally different delivery mechanisms. The glycan-conjugated lipids function as universal targeting agents that can be combined with various LNP compositions (ionizable lipids, helper lipids, cholesterol) to achieve dendritic cell targeting across different vaccine and therapeutic applications, reducing the need for application-specific formulation development.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The novel nanoparticle formulation achieves enhanced uptake and transfection of dendritic cells, boosting adaptive immune responses and inducing immune markers like IFNγ and IL-4, while providing targeted delivery of immunogenic payloads.
Implementation Method 1
targeting dendritic cells by binding to receptors like DC-SIGN, Siglec-1, Siglec-2, or Siglec-5/E
Implementation Method 2
The lipid nanoparticles are usually composed of several types of lipids. The ratio of those lipids requires fine-tuning
Data Source
AI summary
The present disclosure relates to novel compounds, methods, and cell-targeting formulations, e.g., a lipid nanoparticle (LNP) for targeted delivery to a tissue or a cell type. The compound and formulation provided herein are designed to have a targeting moiety configured to provide selective delivery features for the formulation and a lipid tail for being incorporated into the bilayer membrane of the formed lipid nanoparticle.