Palladin (D9H2) Rabbit mAb #8518

The actin-associated scaffold protein, palladin, is associated with multiple actin-rich structures, and plays a role in cellular migration and invasion (1). Palladin regulates the formation of invasive structures called podosomes and invadopodia (1-3). Alternative splicing results in at least three palladin isoforms, including the widely expressed 140 kDa and 90 kDa isoforms (2). Palladin has been shown to promote invasion in basal-like breast carcinoma models (4). Palladin is also upregulated in injured kidneys, and promotes migration of kidney cells to facilitate repair (5). In differentiating muscle cells, palladin regulates migration and myogenesis (6). Several research studies have focused on palladin expression and function in cancer-associated fibroblasts (CAFs). Researchers have shown that expression of palladin in stromal fibroblasts of pancreatic ductal adenocarcinoma is an indication of the effectiveness of chemotherapy (7). The cancer associated transcription factor Twist1 may require palladin and collagen alpha1 for its metastatic effect in fibroblasts (8).