Human EGFR Knockout Cell Line-PC3

The epidermal growth factor receptor (EGFR) gene, also known as ERBB1 and HER1 in humans, encodes a transmembrane protein that belongs to the ErbB receptor family. The EGFR protein plays a key role in regulating cell growth, survival, proliferation, and differentiation. When bound to its specific ligands, such as epidermal growth factor (EGF) and transforming growth factor-α (TGF-α), EGFR undergoes a conformational change that leads to its dimerization and activation via autophosphorylation on key tyrosine residues. This activation triggers multiple downstream signaling pathways, including the MAPK, Akt, and JNK pathways, which are essential for cell division and proliferation.

EGFR is essential for a variety of normal cellular processes, including the development of epithelial tissues and the maintenance of the integrity of the skin barrier. It has also been shown to be involved in the immune response of human skin, highlighting its importance in normal physiology and disease states. However, mutations and overexpression of the EGFR gene have been implicated in the pathogenesis of several cancers. These cancers include lung adenocarcinoma, glioblastoma, and epithelial tumors of the head and neck. In these cancers, alterations in EGFR lead to its persistent activation, which results in uncontrolled cell proliferation and survival, promoting tumor growth and progression. For example, a specific mutation, called EGFRvIII, is frequently observed in glioblastoma and is associated with increased malignancy.