Recipient cell surface receptors and membranes

Recipient cell surface receptors and membranes is a broad descriptive term used to characterize the cellular interface where external ligands, signaling molecules, and therapeutic delivery vehicles interact with a target cell. This interface comprises a diverse array of integral membrane proteins, including G protein-coupled receptors (GPCRs), ion channels, and receptor tyrosine kinases, as well as the phospholipid bilayer itself (Alberts et al., 2014). These components are essential for signal transduction, allowing cells to perceive and respond to their environment, and for the regulated uptake of extracellular materials through endocytosis or membrane fusion (Murphy et al., 2019). Dysregulation of these surface components is central to various pathologies, including oncogenic signaling in cancer and the exploitation of receptors by viruses for cellular entry (Alberts et al., 2014). In the context of pharmacology, this term often appears in discussions of targeted drug delivery systems, such as nanoparticles or extracellular vesicles, which must navigate and bind to specific surface features of the recipient cell to deliver their cargo (Tkach & Théry, 2016). Because the term encompasses a vast and heterogeneous group of molecular structures rather than a single discrete entity, it is considered a functional or structural category rather than a specific, druggable therapeutic target.

Other names

Cell surface receptorsPlasma membraneCellular interfaceTarget cell surface receptors

Binding of ligands or delivery vehicles to surface proteins to initiate signaling or cellular entry.