Storage | Should always be stored at in the dark at 4 °C, except when brought to room temperature for brief periods prior to animal dosing. DO NOT FREEZE. If the suspension is frozen, the encapsulated drug can be released from the liposomes thus limiting its effectiveness. In addition, that the size of the liposomes will also change upon freezing and thawing. |
Appearance | White translucent liquid made of nano size unilamellar liposomes. Usually due to the small size of liposomes no settling will occur in the bottom of the vial. The liposomes are packaged in an amber vial. |
Description | Liposomes are extensively used to study the interaction of proteins, peptides and other molecules with the surface of a lipid membrane. One of the parameters that affects this interaction is the charge of the liposomal membrane. Liposomes are always made in aqueous environment and they are sized to the desired size in liquid state using various methods such as high pressure extrusion through nano sized pore track etch membranes. Liposome without water is meaningless. In rare occasions, liposomes are freeze dried and proliposomes are formed in the presence of a lyoprotectant such as trehalose. Using a lyoprotectant is necessary in order to maintain the size of the liposomes after rehydration. Natural PC-based Liposomes are composed of many liposomes made from phosphatidylcholine (PC) lipids that are made from natural lipids that are extracted from egg yolk and soy bean and also tissues and organs such as brain, heart and liver with and without cholesterol. Adding 30% cholesterol makes the liposomes serum stable and is necessary when the liposomes are used in the presence of serum. Liposomes made from Heart PC also contain 40% plasmalogen ether lipid. Ether lipids are more stable and do not get hydrolyzed. Heart PC also contains saturated and unsaturated lipids. It contains about 23% 16:0 lipid and 7% 18:0 lipid, 11% 18:1 lipid, 43% 18:2 lipid and 6% 20:4 lipid. |
Lipid composition | Heart PC/Cholesterol (70/30 molar ratio) |
Liposome Size | 100 nm |
Lipid Molar Concentration | 10 mM |
Buffer | Phosphate Buffered Saline, pH 7.4 |
Shelf-life | 4 months. |
Technical Notes | Liposomes are unilamellar and sized to 100 nm. If you need them to be made in another size then you should mention that at the time of ordering. Unilamellar liposomes can be made in 50 nm and 200 nm sizes. Liposomes that are larger than 200 nm are multilamellar structure. Liposomes are made in PBS buffer at pH 7.4 but it can be made in any other buffer of your choice. You can specify your buffer at the time of ordering. Liposomes are made in degassed buffer that is purged with argon to avoid oxidation of the unsaturated phospholipids. Liposomes are made under sterile condition. Liposomes are unilamellar and therefore due to their small size they will not settle in the bottom of the vial. If you need to take multiple aliquots out of the vial during a period of time, then it is advised to take extreme care in not contaminating the vial. It is recommended to handle the vial under a sterile hood to maintain the sterility of the product. Liposomes should never be frozen. Crystal ice that is formed during freezing will rupture the lipid membrane of the liposomes and change the size the liposomes particles. |
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×Product Name | Catalog | Lipid composition | Liposome Size | Price |
---|---|---|---|---|
Clipos™ Natural Phosphatidylcholine (PC) Lipid Liposomes | CDECHP-1564 | 100% 23/0 PC | 100 nm | $2100 |
Clipos™ Natural Phosphatidylcholine (PC) Lipid Liposomes | CDELPCG-1243 | HSPC/Cholesterol/PEG2000-DSPE (65/30/5 molar ratio) | 100 nm (after hydration) | $2100 |
Clipos™ Natural Phosphatidylcholine (PC) Lipid Liposomes | CDEPG-05 | HSPC/DSPE-mPEG2000 (95/5 molar ratio) | 70-120 nm | $1200 |
Clipos™ Natural Phosphatidylcholine (PC) Lipid Liposomes | CDELPC-1269 | 100% Heart PC | 100 nm (after hydration) | $2100 |
Clipos™ Natural Phosphatidylcholine (PC) Lipid Liposomes | CDECPC-1596 | 100% Liver PC | 100 nm | $2100 |
Clipos™ Natural Phosphatidylcholine (PC) Lipid Liposomes | CDECPC-1594 | 100% Egg PC | 100 nm | $2450 |
Clipos™ Natural Phosphatidylcholine (PC) Lipid Liposomes | CDEPG-08 | DMPC/Chol (70/30 molar ratio) | 70-120 nm | $1200 |
Clipos™ Natural Phosphatidylcholine (PC) Lipid Liposomes | CDELHP-1223 | 100% 24/0 PC | 100 nm (after hydration) | $2100 |
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