Lipid Particle Composition for Bone Marrow Targeting
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Solution Overview
Problem
Current liposome preparations do not effectively target the bone marrow, particularly for panobinostat, a hydroxamic acid derivative used in treating multiple myeloma, lacking high bone marrow-targeting capability.
Innovation Solution
A lipid particle composition containing panobinostat or its salt, comprising a phospholipid and cholesterol, with specific formulations that enhance bone marrow accumulation, including remote loading and controlled particle size and composition to achieve high bone marrow-targeting capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional liposome preparations are used, then the drug can be encapsulated and delivered, but the bone marrow-targeting capability is insufficient
Solution Approach 1:
The patent modifies the liposome composition by incorporating specific lipids (cholesterol, phosphatidylcholine, sphingomyelin) in optimized ratios, and controls particle size parameters (50-500 nm average diameter) to enhance bone marrow targeting. These parameter changes transform the liposome from a general delivery vehicle to a bone marrow-specific targeting system.
Solution Approach 2:
The invention creates a composite liposome structure combining multiple lipid components (cholesterol, phosphatidylcholine, sphingomyelin) with panobinostat drug molecules. This composite material approach enables the liposome to exhibit both drug delivery functionality and bone marrow-specific targeting properties that individual components cannot achieve alone.
2Reliability
If the lipid particle composition is optimized for bone marrow targeting, then the therapeutic index is improved, but the formulation complexity increases
Solution Approach 1:
The patent establishes specific parameter ranges for lipid composition (cholesterol 20-50 mol%, phosphatidylcholine 30-60 mol%, sphingomyelin 10-30 mol%) and particle size (50-500 nm) that optimize the therapeutic index. By defining these parameters, the complex formulation process becomes more controllable and reproducible.
Data Source
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AI summary
An object of the present invention is to provide a lipid particle composition containing panobinostat or a salt thereof and exhibiting a high bone marrow-targeting capability, and a pharmaceutical composition including the lipid particle composition. According to the present invention, provided is a lipid particle composition containing panobinostat or a salt thereof, in which a lipid particle contains a phospholipid and cholesterol.