Damaged host cell membranes

Damaged host cell membranes refer to the loss of lipid bilayer integrity in cells due to mechanical stress, oxidative damage, or pathological processes. This damage exposes hydrophobic regions of the membrane and allows the unregulated flux of ions, particularly calcium, into the cell. The resulting calcium overload and leakage of intracellular contents, such as creatine kinase, are central drivers of cell death and inflammation in conditions like Duchenne muscular dystrophy and traumatic brain injury [1, 12]. Therapeutic strategies targeting damaged membranes include the use of membrane sealants like Poloxamer 188, which selectively insert into disrupted areas of the bilayer to restore barrier function [1, 17]. Additionally, damaged membranes are recognized by the innate immune system through pattern recognition molecules like C-reactive protein and complement factors such as properdin, which can further exacerbate inflammation [7, 8, 9]. Emerging therapies also include recombinant proteins like MG53 (TRIM72), which facilitate the natural membrane repair machinery of the cell. Monitoring efficacy often involves measuring the levels of leaked intracellular enzymes or the presence of inflammatory markers associated with membrane disruption.

Other names

Disrupted cell membranesLeaky cell membranesMembrane lesionsInjured host cell membranesCompromised plasma membranes

Membrane sealing and repair through insertion into hydrophobic gaps of the lipid bilayer, restoration of barrier function, and prevention of unregulated ion flux and intracellular content leakage.