LNP Payload Delivery for Stem Cell Modification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In vivo modification of cells, particularly stem or progenitor cells, is challenging due to difficulties in specifically targeting cells for payload delivery, which hinders effective treatment of diseases and disorders.
Innovation Solution
Lipid nanoparticle (LNP) compositions are used to deliver payloads directly to stem or progenitor cells, modifying cellular parameters or components without the need for additional targeting moieties, thereby modifying genotypes, phenotypes, or functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods are used for in vivo cell modification, then delivery of payloads to cells is attempted, but specific targeting of stem or progenitor cells is difficult, resulting in low transfection efficiency
Solution Approach 1:
The LNP composition autonomously targets and delivers payloads to stem or progenitor cells through its inherent properties without requiring external targeting moieties. The ionizable lipid component enables the LNP to self-assemble and interact with cell membranes, achieving specific targeting through its chemical structure rather than added biological ligands.
Solution Approach 2:
The patent utilizes pH-dependent parameter changes of the ionizable lipid to achieve targeted delivery. The LNP maintains a neutral charge at physiological pH for stability in circulation, then undergoes protonation in the acidic endosomal environment, triggering membrane disruption and payload release specifically within target cells.
2Reliability
If additional targeting moieties are added to improve cell targeting, then specificity may improve, but the complexity and cost of the composition increases
Solution Approach 1:
The LNP composition achieves reliable cell targeting through its intrinsic chemical properties rather than extrinsic targeting moieties. The ionizable lipid's pH-responsive behavior provides built-in targeting capability that recognizes and enters specific cell types without requiring additional proteins, antibodies, or ligands.
Solution Approach 2:
The patent employs a composite LNP formulation combining ionizable lipid, helper lipid, cholesterol, and PEG-lipid in specific ratios. This composite structure provides both stability for circulation and specific cellular interactions, achieving reliable targeting through material composition rather than biological conjugates.
3Productivity
If LNP compositions are used for in vivo delivery, then transfection efficiency improves, but the need for precise control of delivery parameters arises
Solution Approach 1:
The LNP composition is designed with inherent pH-responsive parameter changes that automatically control delivery timing and location. The ionizable lipid transitions from neutral to charged state in response to endosomal acidification, triggering payload release without requiring external control mechanisms.
Solution Approach 2:
The acidic endosomal environment serves as an intermediary that triggers the pH-dependent release mechanism. This natural biological parameter acts as the trigger for payload delivery, eliminating the need for complex external control systems while maintaining high transfection efficiency.
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 LNP compositions effectively modify a significant percentage of stem or progenitor cells, leading to therapeutic changes in the subject, such as treating diseases or disorders by altering cellular functions or components, demonstrating high transfection efficiency without requiring additional targeting agents.
Implementation Method 1
Lipid nanoparticle (LNP) compositions are used to deliver payloads directly to stem or progenitor cells
Data Source
AI summary
The disclosure features methods of modifying a cell or tissue in vivo with lipid nanoparticle (LNP) compositions comprising a payload. The LNP compositions of the present disclosure can modify a parameter associated with the cell or tissue; or modify a component associated with the cell or tissue. Further disclosed are methods of treating a subject having a disease, a disorder, a mutation, or a single nucleotide polymorphism (SNP), comprising administering to the subject an effective amount of an LNP composition comprising a payload. Also disclosed herein are LNP compositions comprising a payload and methods of making the same.