RTE-2 Cells

RTE-2 is a rat tracheal epithelial cell line originally derived from normal tracheal epithelium and subsequently immortalized to enable continuous in vitro propagation. The cells exhibit epithelial morphology characterized by polygonal, cobblestone-like growth patterns when cultured to confluence. RTE-2 cells retain key structural and functional properties of airway epithelial cells, including the formation of tight intercellular junctions and expression of epithelial cytokeratins, making them a relevant model for respiratory epithelial biology.

Functionally, RTE-2 cells have been widely used to investigate mechanisms of airway epithelial differentiation, mucosal barrier integrity, and responses to environmental stimuli. They demonstrate the capacity to polarize under appropriate culture conditions and can express junctional proteins associated with epithelial barrier formation. In addition, RTE-2 cells respond to inflammatory mediators and oxidative stress, providing a controlled in vitro platform to study signaling pathways involved in airway inflammation and epithelial injury.

Due to their stable growth characteristics and preserved epithelial phenotype, RTE-2 cells are frequently employed in studies of respiratory toxicology, host-pathogen interactions, and airway remodeling. As a rodent-derived airway epithelial model, RTE-2 offers a reproducible system for mechanistic investigations that complement in vivo pulmonary research.