TMEM24 Inhibitors
Chemical inhibitors of TMEM24 can exert their inhibitory effects through various cellular mechanisms that are essential to the protein's function. Tertiapin-Q acts by directly blocking the TMEM24-regulated PI(4,5)P2-sensitive K⁺ channels, which are critical for the dynamic maintenance of endoplasmic reticulum-plasma membrane (ER-PM) junctions where TMEM24 operates. Similarly, 2-APB and Xestospongin C disrupt calcium signaling pathways that TMEM24 facilitates, 2-APB by modulating store-operated calcium entry and Xestospongin C by inhibiting the IP3 receptor. As TMEM24 is implicated in lipid transfer activities that are calcium-dependent, such disruptions can impair its function. Thapsigargin contributes to TMEM24 inhibition by perturbing endoplasmic reticulum calcium stores, a process where TMEM24's lipid transfer activity is involved. BAPTA-AM also targets TMEM24's reliance on intracellular calcium, sequestering the ion and thus diminishing the protein's lipid transfer capabilities.
Other inhibitors operate by altering the availability or composition of lipids that TMEM24 transfers. ML-9 inhibits myosin light chain kinase, undermining the cytoskeletal arrangements necessary for TMEM24's lipid transfer between membrane domains. U73122 reduces substrate availability for TMEM24 by inhibiting phospholipase C, which is pivotal in generating diacylglycerol, a key lipid in TMEM24's transfer activity. GW4869 impacts the sphingomyelin-ceramide pathway, thereby changing the lipid milieu where TMEM24 functions. Inhibitors like Wortmannin and LY294002 inhibit PI3 kinase, crucial for the phosphorylation of phosphoinositides, which are important substrates for TMEM24's function. Endothall acts by inhibiting protein phosphatase 2A, affecting the phosphorylation state of components involved in the lipid transfer process of TMEM24. Lastly, Propranolol interferes with the β-adrenergic signaling, which can influence intracellular cAMP levels and indirectly reduce TMEM24's lipid transfer activity.
SEE ALSO...
| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
ML-9 | 105637-50-1 | sc-200519 sc-200519A sc-200519B sc-200519C | 10 mg 50 mg 100 mg 250 mg | $112.00 $449.00 $673.00 $1224.00 | 2 | |
ML-9 inhibits TMEM24 by suppressing the activity of myosin light chain kinase (MLCK), which is required for the cytoskeletal rearrangements that TMEM24-mediated phosphatidylinositol transfer between membranes relies on. | ||||||
2-APB | 524-95-8 | sc-201487 sc-201487A | 20 mg 100 mg | $28.00 $53.00 | 37 | |
2-APB inhibits TMEM24 by modulating store-operated calcium entry, which TMEM24 is thought to facilitate through its lipid transfer activity, thereby impacting calcium signaling and TMEM24's functional role in this process. | ||||||
Xestospongin C | 88903-69-9 | sc-201505 | 50 µg | $510.00 | 14 | |
Xestospongin C inhibits TMEM24 by acting as an inhibitor of the IP3 receptor, thereby influencing intracellular calcium levels and affecting the calcium-dependent lipid transfer activity of TMEM24. | ||||||
Thapsigargin | 67526-95-8 | sc-24017 sc-24017A | 1 mg 5 mg | $136.00 $446.00 | 114 | |
Thapsigargin inhibits TMEM24 by disrupting endoplasmic reticulum calcium stores, which TMEM24 is believed to modulate through its lipid transfer function, thereby influencing the ER-PM junctions where TMEM24 operates. | ||||||
GW4869 | 6823-69-4 | sc-218578 sc-218578A | 5 mg 25 mg | $203.00 $611.00 | 24 | |
GW4869 inhibits TMEM24 by inhibiting neutral sphingomyelinase, which impacts the sphingomyelin-ceramide pathway that influences the lipid environment where TMEM24 functions, altering its ability to transfer lipids. | ||||||
BAPTA/AM | 126150-97-8 | sc-202488 sc-202488A | 25 mg 100 mg | $138.00 $458.00 | 61 | |
BAPTA-AM inhibits TMEM24 by chelating intracellular calcium, thus impacting the calcium-dependent lipid transfer activity of TMEM24 and its role in maintaining ER-PM junctions. | ||||||
Wortmannin | 19545-26-7 | sc-3505 sc-3505A sc-3505B | 1 mg 5 mg 20 mg | $67.00 $223.00 $425.00 | 97 | |
Wortmannin inhibits TMEM24 by inhibiting PI3 kinase, which is involved in the phosphorylation of phosphoinositides, a process that is crucial for TMEM24's lipid transfer function at ER-PM junctions. | ||||||
LY 294002 | 154447-36-6 | sc-201426 sc-201426A | 5 mg 25 mg | $123.00 $400.00 | 148 | |
LY294002 inhibits TMEM24 by inhibiting PI3 kinase, leading to a decrease in the phosphatidylinositol 3-phosphate levels and affecting the lipid transfer activity of TMEM24 at the ER-PM junctions. | ||||||
Endothall | 145-73-3 | sc-201325 sc-201325A | 20 mg 100 mg | $49.00 $203.00 | 1 | |
Endothall inhibits TMEM24 by acting as a protein phosphatase 2A (PP2A) inhibitor, thereby affecting the dephosphorylation processes that regulate the activity of proteins involved in the lipid transfer function of TMEM24. | ||||||
Propranolol | 525-66-6 | sc-507425 | 100 mg | $180.00 | ||
Propranolol inhibits TMEM24 by blocking β-adrenergic receptors, which are associated with the regulation of intracellular cAMP levels, and thereby indirectly influencing the lipid transfer activity of TMEM24. | ||||||