ss-31 peptide mechanism of action The binding of SS-31 to cardiolipin alters the interaction of cardiolipin with cytochrome c - Elamipretide mitochondrial-targeted mechanism of SS-31 Unraveling the Mechanism of Action of the SS-31 Peptide

SS-31 peptidedosage The Szeto-Schiller peptide (SS-31), also known by its investigational drug name elamipretide, has emerged as a significant therapeutic candidate due to its potent ability to target and improve mitochondrial function. Understanding the mechanism of action of this mitochondria-targeting peptide is crucial for appreciating its potential across a range of health conditions.SS-31 (also known as Bendavia, Elamipretide, and MTP-131) is a small peptide thataccumulates in mitochondria and scavenges reactive oxygen species. Research indicates that SS-31 primarily exerts its effects by interacting with the inner mitochondrial membrane, where it plays a vital role in stabilizing and optimizing cellular energy production.作者：M Li·2024·被引用次数：11—SS-31selectively targets the inner mitochondrial membranewhere it binds to cardiolipin, a phospholipid crucial for mitochondrial function. By ...

At its core, the mechanism of action of SS-31 involves its selective accumulation within mitochondria. Upon entering the body, whether through administration like subcutaneous administration, the peptide demonstrates a remarkable affinity for specific lipid components作者：I Escribano-Lopez·2018·被引用次数：87—SS-31 can scavenge mitochondrial ROS, thereby promoting mitochondrial function and inhibiting mitochondrial permeability transition. These .... A key player in this interaction is cardiolipin, a phospholipid uniquely abundant in the inner mitochondrial membrane. SS-31 binds with high affinity to cardiolipin, a process that is central to its protective and restorative effects.Mitochondrial protein interaction landscape of SS-31 This high-affinity binding to cardiolipin molecules is not merely an association; it actively modulates the biophysical properties of the mitochondrial membrane.

Studies have shown that SS-31 binds lipid bilayers and modulates surface electrostatics. This interaction is driven by the negatively charged surface of mitochondrial membranes, allowing SS-31 to bind effectively作者：H Zhao·2017·被引用次数：80—In addition,SS-31as an antioxidant not only reduced ROS accumulation, but also boosted the cell's ability to defend against oxidative stress.. By altering membrane curvature and charge distribution, SS-31 influences the organization and function of crucial protein complexes embedded within the membrane. For instance, the binding of SS-31 to cardiolipin alters the interaction of cardiolipin with cytochrome c, favoring its role as an electron carrier within the electron transport chain and thereby promoting ATP recovery and overall energy output.

Beyond its structural influence, SS-31 acts as a potent antioxidant within the mitochondria. A significant aspect of its mechanism is its ability to scavenge mitochondrial ROS (reactive oxygen species). By neutralizing these damaging free radicals, SS-31 can scavenge mitochondrial ROS, thereby preventing oxidative stress that can impair mitochondrial function and lead to cellular damageSS‐31 and NMN: Two paths to improve metabolism and function in .... This mitochondrial-targeted mechanism of SS-31 helps in stabilizing mitochondrial membranes and preserving mitochondrial function, particularly under conditions of stress or aging. The peptide's effect extends to suppressing mitochondrial ROS production, which has been observed in studies investigating its impact on aged cells.

Furthermore, SS-31 has been implicated in influencing signaling pathways critical for cellular health. Research suggests that SS-31 inhibits the phosphorylation of p38 MAPK and CREB, key regulators involved in cellular stress responses and survival作者：H Zhao·2017·被引用次数：80—In addition,SS-31as an antioxidant not only reduced ROS accumulation, but also boosted the cell's ability to defend against oxidative stress.. This inhibition may contribute to its protective effects in various disease models. The peptide also appears to upregulate frataxin expression, a protein essential for mitochondrial iron metabolism and heme synthesis.

The therapeutic potential of SS-31 is underscored by its diverse applications. It has shown promise in ameliorating kidney injury, improving age-related deficits in skeletal muscle, and even in the treatment of specific genetic disorders like Barth syndrome, where elamipretide is a medication used for the treatment of Barth syndrome. Its ability to enhance mitochondrial energetics and reduce oxidative stress makes it a compelling candidate for addressing conditions characterized by mitochondrial dysfunction.

In summary, the mechanism of action of the SS-31 peptide is multifaceted, primarily revolving around its targeted interaction with cardiolipin in the inner mitochondrial membrane. This interaction leads to membrane stabilization, improved electron transport efficiency, enhanced ATP production, and potent antioxidant activity.SS-31 alleviated nociceptive responses and restored ... By selectively targeting the inner mitochondrial membrane and accumulating in mitochondria, SS-31 offers a promising strategy for restoring and preserving cellular energy homeostasis and mitigating oxidative damageSS-31. The precise details of its mechanism of action continue to be explored, but its role in modulating mitochondrial function and structure is increasingly well-defined.