Laminin subunit beta-1 (LAMB1)

Laminin subunit beta-1 is a multidomain glycoprotein encoded by the LAMB1 gene, integral to the structure and function of basement membranes across human tissues. Combined with alpha and gamma chains, it forms heterotrimeric laminin isoforms that mediate essential processes such as cell adhesion, migration, differentiation, and tissue organization. In development, it anchors and organizes radial glial cells, crucial for cerebral cortical formation. Altered expression or mutation of LAMB1 is implicated in various diseases, notably invasive cancers (in which it promotes proliferation, invasion, motility, and metastasis) and some developmental brain disorders. Its expression in metastatic tumors and patient serum supports its use as a biomarker in cancer diagnostics and monitoring. While identified as a promising therapeutic target, direct pharmacologic modulation remains experimental, and safety concerns stem from its fundamental role in normal tissue development and maintenance[1][2][3][4][5][6].

Other names

Laminin B1 chainLaminin-1 subunit betaLaminin-10 subunit betaLaminin-12 subunit betaLaminin-2 subunit betaLaminin-6 subunit betaLaminin-8 subunit betaCLMLIS5laminin, beta 1LAMB1-1Laminin b1LAMININ beta 1laminin subunit β 1LAMININ β 1

Drugs or biologics targeting LAMB1 would likely act via: - Modulation of extracellular matrix interactions - Inhibition of cell migration and attachment - Interference with integrin-mediated signaling - Suppression of tumor cell motility and metastasis[2][5][6]