Liposomes are artificially-assembled vesicles, which refers to the space enclosed within a lipid bilayer. The lipid bilayer is composed of phospholipids with hydrophobic tails and hydrophilic heads, in a fashion so that the heads face the inside and outside of the bubble, and the tails lie in between. Inside the membrane typically exists an aqueous solution, a hydrophilic solute, that is unable to pass through the hydrophobic membrane.
These vesicles are used extensively in the delivery of drugs and genetic material to cells in the body. Their composition, consisting of a natural lipid bilayer, allows them to effectively fuse with naturally-occurring bilayers like that which makes up a cell membrane. When the bilayers converge, the contents of both entities are joined.
The characteristic which allows for the assimilation of lipid bilayers makes Liposomes a fantastic tool for drug delivery. The vesicles can be manufactured to contain a chosen drug, and then injected into the body. Their bilayer membrane prevents the leakage of drug solution or reaction of the drug with the body before reaching the intended site of action and fusion with a cell membrane.
The transport abilities of these entities can also be extended to the role of detoxifying the body. When the body has been infused with too much of a drug, empty liposomes with a transmembrane pH gradient can be injected into the bloodstream to clean up excess drug material within the body. Enclosing the drug within the membrane by this means halts the drug from further reaction within the body.
These artificially-crafted vesicles also offer a means to modify the DNA within a cell. Their purpose, similar to that in drug applications, is to deliver genetic material into a cell. The expression of new genetic material can provide the cell with an ability it did not previously have.
Though Liposomes are man-made, they are by no means unable to react with the body in a natural way. Their lipid bilayer is typically similar if not exactly the same as that of a cell membrane, which allows them to function with the body without resulting in a negative reaction. They have significantly increased the ability of humans to modify cellular activity, and continue to improve the way we interact with the body.
These vesicles are used extensively in the delivery of drugs and genetic material to cells in the body. Their composition, consisting of a natural lipid bilayer, allows them to effectively fuse with naturally-occurring bilayers like that which makes up a cell membrane. When the bilayers converge, the contents of both entities are joined.
The characteristic which allows for the assimilation of lipid bilayers makes Liposomes a fantastic tool for drug delivery. The vesicles can be manufactured to contain a chosen drug, and then injected into the body. Their bilayer membrane prevents the leakage of drug solution or reaction of the drug with the body before reaching the intended site of action and fusion with a cell membrane.
The transport abilities of these entities can also be extended to the role of detoxifying the body. When the body has been infused with too much of a drug, empty liposomes with a transmembrane pH gradient can be injected into the bloodstream to clean up excess drug material within the body. Enclosing the drug within the membrane by this means halts the drug from further reaction within the body.
These artificially-crafted vesicles also offer a means to modify the DNA within a cell. Their purpose, similar to that in drug applications, is to deliver genetic material into a cell. The expression of new genetic material can provide the cell with an ability it did not previously have.
Though Liposomes are man-made, they are by no means unable to react with the body in a natural way. Their lipid bilayer is typically similar if not exactly the same as that of a cell membrane, which allows them to function with the body without resulting in a negative reaction. They have significantly increased the ability of humans to modify cellular activity, and continue to improve the way we interact with the body.
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