ITGB4

ITGB4

A gene on chromosome 17q25 that encodes an integrin beta chain protein (integrins are noncovalently associated transmembrane glycoprotein receptors, composed of alpha and beta chains). The beta chain encoded by ITGB4 usually associates with alpha 6, serving as a laminin receptor. It plays a key structural role in the hemidesmosomes, regulates keratinocyte polarity and motility and is a central player in the biology of invasive cancer.

Molecular pathology
ITGB4 mutations are associated with epidermolysis bullosa with pyloric atresia.
References in periodicals archive ?
74) Eleven genes--COL1A2, COL6A1 (collagen), tPA, MMP9 (protease), CDH3, L1CAM, ITGB4, PLXNA3/PLXN3, KRT14/K14 (cell adhesion or cell surface molecule), SEMA3C (semaphorin), and CXCL10/INP10 (chemokine)--were overexpressed in MPM.
In the comparative study with normal cells quoted above, (74) SEMA3C, ITGB4, CDH3, and COL6A1 were highly expressed in the epithelioid MPM subtype; L1CAM, K14, and INP10 were overexpressed in the mixed MPM subtype; and MMP9 and PLXN3 were overexpressed in the sarcomatoid MPM subtype.
Genomics of Epidermolysis Bullosa EB Type Level of Blistering Genes Simplex Basal cell layer KRT5, KRT14 Hemidesmosomal Basal cell/lamina BPAG2, ITGB4, ITGA6 lucida interface (PLEC1 with muscular dystrophy) Junctional Lamina lucida LAMA3, LAMB3, LAMC2 Dystrophic Sublamina densa COL7A1 Source: Dr.