Inner phalangeal cell

The **inner phalangeal cell** is a specialized supporting epithelial cell in the organ of Corti within the cochlea. It is positioned medially next to the inner hair cell, running in a single row and playing a critical structural and homeostatic role. The cell’s base rests on the basilar membrane, while its apical surface forms part of the reticular lamina that separates the ion-rich endolymph from the perilymph, generating an electrochemical gradient essential for hair cell function. The inner phalangeal cell is not itself a therapeutic target (not a receptor, enzyme, or transporter), but it is crucial for supporting the function of inner hair cells, maintaining the structural integrity of the sensory epithelium, and preserving the cochlea’s specialized ionic milieu[1][7]. It is linked to tight, adherens, and desmosomal junctions with neighboring cells, providing both a physical barrier and participation in the maintenance of the endocochlear potential that enables hair cell depolarization[1][7]. \n\nKey points:\n- Inner phalangeal cells are not molecular targets (not enzymes, transporters, or receptors); they are structural/supporting cells of the inner ear[1][2][7].\n- Sometimes generically called “supporting cells,” but “inner phalangeal cell” is the precise term[1][7].\n- No established role as therapeutic targets; no specific drugs or mechanisms of action, biomarkers, or safety concerns known[1][7].\n\nThe entity is **not** a typical drug target but is rather a highly specialized anatomical cell type. If your use case is limited to recognized pharmacological targets (such as receptors or enzymes), this should be flagged as an "incorrect" target according to your conventions.

Other names

Inner phalangeal epithelial cellIPC