Piezo-type mechanosensitive ion channel component 1 (PIEZO1)

Piezo-type mechanosensitive ion channel component 1 (PIEZO1) is a large, trimeric, non-selective cation channel that transduces mechanical stimuli—such as membrane stretch, pressure, or shear stress—into electrical and biochemical cellular responses[1][4][5]. PIEZO1 is primarily embedded in the plasma membrane and is characterized by its unique propeller-shaped structure with 38 transmembrane domains per subunit[1][4][7]. It plays an essential role in various mechanosensory processes, including regulation of cell volume, vascular development, red blood cell adaptation in capillaries, and epithelial tissue homeostasis[1][2][3]. Activation of PIEZO1 channels results in Ca²⁺, Na⁺, and K⁺ influx, triggering downstream signaling pathways critical for cellular adaptation to mechanical forces. Mutations in PIEZO1 are linked to diseases such as hereditary xerocytosis, lymphatic malformations, and vascular abnormalities, establishing its importance as a therapeutic target and disease biomarker[1][2][4][5]. The pharmacology of PIEZO1 is emerging, with several low-specificity modulators described, but tissue-specific targeting and therapeutic application require further research given the risk of perturbing vital mechanosensitive functions[5].

Other names

FAM38AKIAA0233Membrane protein induced by beta-amyloid treatmentProtein FAM38AMibDHSERLMPH3LMPHM6family with sequence similarity 38 member A

Agonists increase channel opening to enhance cation influx and mechanotransduction; antagonists block channel opening or reduce sensitivity to mechanical force, thereby dampening downstream calcium signaling