Cellular membranes and surface receptors of recipient cells

Cellular membranes and surface receptors of recipient cells refers to the biological interface consisting of the phospholipid bilayer and embedded proteins that define the boundary of a target cell. This complex structure is responsible for maintaining cellular integrity, regulating the transport of ions and molecules, and facilitating communication between the cell and its environment (Alberts et al., 2002). In the context of intercellular communication, these membranes and receptors serve as the primary docking sites for extracellular vesicles (EVs) and viruses, which utilize specific surface proteins to initiate uptake or fusion (Mulcahy et al., 2014). In pharmacology, this interface is the primary site for drug-target interactions, where surface receptors like G protein-coupled receptors (GPCRs) or ion channels serve as docking sites for therapeutic ligands (Conner & Schmid, 2003). Furthermore, the recipient cell membrane is a critical barrier for the delivery of advanced therapies, including mRNA-loaded lipid nanoparticles, which must navigate endocytic pathways to reach their intracellular destinations (Sahay et al., 2010). The specific composition of receptors and lipids on these membranes often dictates the tissue specificity and efficacy of a drug, making them central to the design of targeted delivery systems (Behzadi et al., 2017). However, because this term describes a broad anatomical location rather than a specific molecular entity, it is considered a general biological category rather than a single therapeutic target.

Other names

Cell surfacePlasma membraneTarget cell receptorsRecipient cell interface

Drugs and delivery vehicles interact with this site by binding to specific surface proteins to modulate signaling or by interacting with the lipid bilayer to facilitate cellular entry via endocytosis or membrane fusion (Conner & Schmid, 2003; Sahay et al., 2010).