Phosphodiesterase 4D-interacting protein (PDE4DIP)

Phosphodiesterase 4D-interacting protein (PDE4DIP), also known as myomegalin, is a large scaffold protein primarily located at the centrosome and Golgi apparatus. It serves as an A-kinase anchoring protein (AKAP), sequestering components of the cyclic AMP (cAMP) signaling pathway, such as PDE4D and protein kinase A (PKA), to specific subcellular compartments to regulate localized signal transduction [1][3][15]. PDE4DIP plays a critical role in microtubule organization and Golgi integrity, which are essential for processes like cell division, intracellular trafficking, and cell motility [4][7]. In disease, PDE4DIP is implicated in both cardiovascular and oncogenic conditions. Genetic variants and mutations are associated with atrial fibrillation, stroke, and heart failure due to the disruption of cAMP compartmentalization in cardiomyocytes [3][15]. In oncology, PDE4DIP is often overexpressed in cancers such as colorectal and lung cancer, where it promotes growth by modulating the RAS/ERK and PKA/CREB signaling pathways [6][7]. Additionally, chromosomal translocations involving PDE4DIP and PDGFRB lead to myeloproliferative disorders that are sensitive to tyrosine kinase inhibitors like imatinib [5][8]. Its role as a regulator of oncogenic signaling and cardiac function makes it an attractive potential target for therapeutic development [3][10].

Other names

MyomegalinCardiomyopathy-associated protein 2CMYA2MMGLKIAA0477KIAA0454

Tyrosine kinase inhibition (specifically for PDE4DIP-PDGFRB fusion protein)