Liposomal membrane

The liposomal membrane is the structural phospholipid bilayer of a liposome, an artificial spherical vesicle used as a versatile drug delivery system [Prime Scholars, 2024; Cureus, 2024]. It is not a biological target in the human body, such as a receptor or enzyme; rather, it is a synthetic vehicle designed to encapsulate and transport therapeutic agents to specific sites of action [MDPI, 2024; PMC, 2022]. The membrane typically consists of phospholipids and cholesterol, which provide structural integrity and modulate fluidity to protect sensitive payloads from enzymatic degradation [Frontiers in Pharmacology, 2022]. By mimicking the properties of natural cell membranes, liposomal membranes improve the solubility of hydrophobic drugs and reduce systemic toxicity by sequestering potent agents until they reach the target tissue [Cureus, 2024; Frontiers in Pharmacology, 2022]. Modifications to the membrane, such as the addition of polyethylene glycol (PEG) for "stealth" capabilities or targeting ligands for site-specific delivery, allow for optimized pharmacokinetics and enhanced accumulation in diseased areas like tumors via the enhanced permeability and retention (EPR) effect [MDPI, 2024; PMC, 2022]. Prominent clinical examples of drugs utilizing this technology include liposomal doxorubicin (Doxil) for cancer and liposomal amphotericin B (AmBisome) for fungal infections [Helix Biotech, 2024; Prime Scholars, 2024].

Other names

Liposome bilayerLipid vesicle membraneArtificial lipid bilayerLiposomal shell

Acts as a synthetic carrier that encapsulates therapeutic agents to improve bioavailability, prolong circulation time, and facilitate targeted delivery to diseased tissues [MDPI, 2024; Prime Scholars, 2024].