Recipient cell membrane and associated surface proteins

The recipient cell membrane and associated surface proteins represent the complex biological boundary and signaling interface of a target cell (Alberts et al., 2002). Composed of a phospholipid bilayer and a diverse array of embedded glycoproteins, receptors, and transporters, this structure regulates the entry of ions, nutrients, and therapeutic agents (Cooper, 2000). In the context of infectious diseases, the membrane serves as the site for viral attachment and fusion, mediated by specific host cell receptors such as ACE2 for SARS-CoV-2 or CD4 for HIV (Marsh & Helenius, 2006). For oncology and immunology, surface proteins act as critical docking sites for monoclonal antibodies and chimeric antigen receptor (CAR) T-cells. While the membrane itself is a fundamental cellular component, it is not a single therapeutic target but rather a collection of thousands of potential targets (StatPearls, 2023). Consequently, pharmacological interventions must be highly specific to individual surface proteins to avoid broad cellular toxicity and ensure therapeutic efficacy.

Other names

Plasma membraneCell surfaceHost cell membraneCytoplasmic membraneCellular boundary

Drugs targeting components of the recipient cell membrane typically act via receptor antagonism, inhibition of viral-cell fusion, or direct disruption of the lipid bilayer integrity (Marsh & Helenius, 2006; StatPearls, 2023).