PEGYLATED LIPOSOMAL FORMULATIONS FOR PHOTODYNAMIC TREATMENT OF INFLAMMATORY DISEASES
First Claim
1. A pegylated liposomal photosensitizer formulation for use in reducing inflammation comprising:
- a liposomal bilayer, wherein the said bilayer consists of synthetic phospholipids;
at least one synthetic phospholipids is a polyethylene glycol (PEG) linked phospholipid; and
a hydrophobic photosensitizer, contained within said liposomal bilayer.
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Accused Products
Abstract
A PDT treatment system designed to treat all types of human inflammatory disorders. A suitable drug delivery system is developed to target proliferating cells, at inflamed sites, populated with macrophages and other inflammatory mediators. The hydrophobic photosensitizer is loaded into the liposomal bilayer formed of synthetic phospholipids; at least one of the synthetic phospholipids is conjugated to polyethylene glycol (PEG) molecules, to prevent accumulation in the liver and spleen. Further, (PEG) formulated photosensitizer increases the circulatory half-life of the drug, enhances solubility, and modifies pharmacokinetic and pharmacodynamic properties. The formulation, thus, leads to a higher amount of delivered drug to the diseased target synovial tissue, increasing clinical effectiveness. In one embodiment, pegylated liposomes loaded with mTHPC are administered to diseased synovial joints, followed by light irradiation. Activated photosensitizer induces cytotoxic effect in the diseased synovial cells, thus preventing further inflammation and joint erosion and minimizing joint damage.
18 Citations
17 Claims
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1. A pegylated liposomal photosensitizer formulation for use in reducing inflammation comprising:
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a liposomal bilayer, wherein the said bilayer consists of synthetic phospholipids; at least one synthetic phospholipids is a polyethylene glycol (PEG) linked phospholipid; and a hydrophobic photosensitizer, contained within said liposomal bilayer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification