Palladin, cytoskeletal associated protein (PALLD)

Palladin is an actin- and microtubule-associated scaffolding protein that plays a central role in organizing the cytoskeleton, regulating cell shape, motility, adhesion, and cell-matrix interactions across a variety of cell types[1][2][3][4]. It localizes to sites of dynamic actin remodeling, such as lamellipodia and stress fibers, and binds several key actin-regulatory proteins, orchestrating their assembly into higher-order cytoskeletal structures[2]. In cancers, palladin modulates cell migration and invasion by regulating actin bundling and the formation of structures (podosomes/invadopodia) that facilitate tissue invasion[2]. Germline polymorphisms in PALLD are associated with pancreatic cancer susceptibility and possibly cardiovascular disease, though its causative role in familial pancreatic cancer is controversial and likely limited to rare pedigrees[1][2][4]. Palladin acts downstream of major signaling pathways (including Akt, ERK, and Src) which modulate its localization, binding, and function via phosphorylation and protein-protein interactions[2][3]. A defining feature is its immunoglobulin-like domains, which mediate many of its molecular interactions and scaffolding functions[2]. There are several isoforms due to alternative splicing[1][4]. As of now, no drugs are known to target palladin directly, but its overexpression in tumor stroma is being investigated as a prognostic biomarker in some cancers[2][4]. Palladin is not a direct therapeutic target but remains of interest in cancer cell biology and cytoskeletal disease research.

Other names

PalladinPALLDKIAA0992CGI-151SIH002MYNPNCA1Sarcoma antigen NY-SAR-77CGI151Myoneurin

Not applicable/unknown