TE-1 Cells

The TE-1 cell line was derived from a well-differentiated squamous cell carcinoma of the esophagus. TE-1 cells are characterized by their epithelial morphology, growing as both isolated and piled-up colonies. Cytogenetic studies reveal a male karyotype and distinctive marker chromosomes. TE-1 cells are notable for their differentiation-associated structures, such as desmosomes and interdigitated microvilli, as observed under scanning electron microscopy. These cells also exhibit abundant organelles, including mitochondria and rough endoplasmic reticulum, as seen in transmission electron microscopy. When transplanted into immunodeficient mice, TE-1 cells form tumors that closely resemble the histological features of the original tumor, making them a reliable model for esophageal squamous cell carcinoma research. The cell line has been utilized to investigate molecular and cellular mechanisms of squamous cell carcinoma, including studies on epidermal growth factor (EGF) receptor expression and signaling. TE-1 cells demonstrate a reduced number of high-affinity EGF receptors compared to normal esophageal epithelial cells, and their response to EGF differs markedly. These features make TE-1 a valuable model for exploring the roles of growth factor signaling, tumor biology, and therapeutic resistance in esophageal squamous cell carcinoma.