GsMTx-4 is primarily used in research to study mechanosensitive ion channels, which are involved in various physiological processes. It is particularly valuable in understanding how cells respond to mechanical stimuli, such as pressure or stretch. This peptide has been instrumental in exploring conditions like cardiac arrhythmias, where mechanosensitive channels play a role. Additionally, it aids in investigating muscular dystrophy, as these channels are implicated in muscle function and degeneration. GsMTx-4 is also utilized in neuroscience to examine the role of mechanosensitive channels in pain sensation and neuronal signaling. Its application extends to studying kidney function, where these channels are involved in sensing fluid flow and pressure. Overall, GsMTx-4 is a crucial tool for unraveling the mechanisms of mechanotransduction in various biological systems.