Cellular lipid membrane integrity

“Cellular lipid membrane integrity” refers to the unbroken physical and biochemical continuity of the lipid bilayer that forms the cell’s plasma membrane. This integrity is essential for preserving the selective permeability barrier, maintaining homeostasis, and supporting cell viability. The plasma membrane is composed primarily of phospholipids, cholesterol, and sphingolipids which collectively determine membrane fluidity, curvature, and the ability to resist mechanical or chemical disruption[1][2][3][4]. Disruption of membrane integrity—by mechanical, chemical, or biological agents—results in loss of barrier function, unregulated ion fluxes, leakage of cytoplasmic contents, and, if unresolved, cell death. Cells employ tightly regulated repair mechanisms involving lipid trafficking, vesicle fusion, and protein machinery (e.g., MG53, dysferlin) to rapidly reseal membrane disruptions[1][4]. Loss of membrane integrity is a hallmark of many pathologies, including muscular dystrophies, tissue ischemia, and necrosis in response to toxins or pathogens. There are no specific drugs that ‘target’ membrane integrity as a conventional receptor or enzyme, though agents like Poloxamer 188 can enhance membrane resealing in certain disease contexts[1]. Note: This entry does not correspond to a classical druggable target (such as a receptor, ion channel, enzyme, or transporter), but describes a *biophysical property* or *state* of the membrane. This makes "Cellular lipid membrane integrity" **not a specific molecular target** as per canonical pharmacological definitions, so `is_target` is set to false and `is_incorrect` is set to true.

Other names

Membrane integrityPlasma membrane integrityLipid bilayer integrity

Stabilization of lipid packing; Enhancement of membrane repair; Alteration of fluidity and permeability