Membrane and High-Density Lipoprotein Phospholipids (HDL-PL)

Phospholipids in membranes and HDL-like particles are essential structural and functional lipids that play a pivotal role in maintaining cellular homeostasis and regulating lipid transport. In the context of high-density lipoproteins (HDL), these phospholipids are critical for the solubilization of free cholesterol and serve as the primary vehicle for reverse cholesterol transport (RCT), a process that removes excess cholesterol from peripheral tissues like atherosclerotic plaques and transports it to the liver for excretion (Rosenson et al., 2016, Nature Reviews Cardiology). Therapeutic interventions often utilize synthetic HDL-like particles or HDL mimetics, which are complexes of phospholipids and apolipoprotein A-I (ApoA-I), to acutely enhance cholesterol efflux and stabilize vulnerable plaques in patients with acute coronary syndrome (Tardif et al., 2014, European Heart Journal). Beyond cardiovascular health, membrane phospholipids are targeted by specific pharmacological agents, such as miltefosine or daptomycin, which exploit the unique lipid composition of pathogen membranes to induce cell death or modulate intracellular signaling (Escribá et al., 2008, Trends in Molecular Medicine). Consequently, these phospholipids are not merely structural components but are active participants in disease pathophysiology and therapeutic response. Monitoring biomarkers like HDL particle number and cholesterol efflux capacity is essential for evaluating the efficacy of drugs targeting these lipid structures (Rader & Tall, 2012, JCI).

Other names

Membrane phospholipidsHDL-associated phospholipidsLipid bilayer componentsHDL-like particle phospholipidsSurface phospholipids

Promotion of reverse cholesterol transport via cholesterol efflux from macrophages; disruption of cellular membrane integrity in pathogens; modulation of membrane-bound signaling pathways.