PtdIns-(3,4)-P2 (1,2-dipalmitoyl) (sodium salt)

PtdIns-(3,4)-P2 (1,2-dipalmitoyl) (sodium salt) is a synthetic derivative of phosphoinositides, with dual phosphorylation at the 3 and 4 positions of the inositol ring. The dipalmitoyl fatty acid chains linked at the 1 and 2 positions provide membrane anchorage, mimicking the natural phosphatidylinositol 3,4-bisphosphate (PtdIns-(3,4)-P2). This phosphoinositide is a critical secondary messenger in signal transduction pathways. It plays a role in the regulation of cellular processes such as membrane trafficking, cytoskeletal dynamics, and cell migration. Researchers use this compound to study phosphoinositide-binding proteins, including pleckstrin homology (PH) domain-containing proteins, which specifically recognize PtdIns-(3,4)-P2. It is particularly important for investigating the signaling cascades mediated by PI3-kinase, as this enzyme generates PtdIns-(3,4)-P2. By analyzing this synthetic lipid, researchers explore the recruitment and activation of key signaling proteins like Akt, which plays a pivotal role in controlling cell growth and survival. Furthermore, this compound aids in understanding the spatial and temporal dynamics of phosphoinositide production and its downstream effectors in various cellular compartments, such as lamellipodia and early endosomes. Its study provides valuable insights into phosphoinositide-mediated signaling networks that regulate essential cellular functions like cell adhesion, chemotaxis, and phagocytosis.