About Human Adenosine A2B Receptor (ADORA2B) Stable Cell Line

Adenosine A2B Receptor (ADORA2B, A2BR) is a Class A G protein-coupled receptor (GPCR) belonging to the adenosine receptor family, which also includes A1, A2A, and A3 receptors. ADORA2B is activated by extracellular adenosine, a signaling molecule released during conditions of cellular stress, inflammation, hypoxia, and tissue injury. Compared with other adenosine receptors, A2B exhibits relatively lower affinity for adenosine and is preferentially activated under pathological conditions where extracellular adenosine concentrations become elevated. Upon activation, ADORA2B primarily couples to Gs proteins, stimulating adenylate cyclase activity and increasing intracellular cAMP levels, although coupling to Gq-mediated signaling pathways has also been reported in certain cell types.

ADORA2B is widely expressed in immune cells, endothelial cells, epithelial tissues, smooth muscle cells, fibroblasts, and various organs including the lung, intestine, kidney, and cardiovascular system. The receptor plays important roles in regulating inflammation, vascular function, tissue repair, fibrosis, hypoxic adaptation, and immune responses. Dysregulation of ADORA2B signaling has been implicated in asthma, chronic obstructive pulmonary disease (COPD), inflammatory bowel disease, pulmonary fibrosis, cardiovascular disorders, cancer, and other inflammatory diseases. Consequently, ADORA2B has emerged as an important therapeutic target for immunology, inflammation, fibrosis, and oncology research.

eEnzyme's Human ADORA2B Stable Cell Line provides a reliable and reproducible cellular platform for investigating A2B receptor pharmacology and signaling mechanisms. The cell line enables quantitative assessment of agonists, antagonists, inverse agonists, and allosteric modulators through cAMP assays, reporter gene assays, and other GPCR functional screening platforms. Researchers can utilize this stable cell line for receptor characterization, compound profiling, lead optimization, and high-throughput screening applications supporting inflammation, fibrosis, hypoxia, and cancer drug discovery programs.

Applications of the ADORA2B Stable Cell Line

• ADORA2B receptor pharmacology studies
• Adenosine signaling investigations
• Agonist and antagonist screening
• Inflammation and immunology research
• Fibrosis and tissue remodeling studies
• Hypoxia and ischemia signaling research
• cAMP and GPCR functional assays
• High-throughput screening applications

Biological Significance of ADORA2B

ADORA2B functions as an important sensor of extracellular adenosine during physiological stress and tissue injury. Activation of the receptor regulates inflammatory responses, vascular permeability, immune cell function, cytokine production, and tissue repair processes. In hypoxic environments, ADORA2B signaling contributes to adaptive responses that help maintain tissue integrity and limit cellular damage. However, chronic or excessive activation of ADORA2B has also been linked to pathological fibrosis, tumor progression, and persistent inflammatory conditions. Because of its central role in inflammation, hypoxia signaling, immune regulation, and tissue remodeling, ADORA2B remains a highly attractive target for therapeutic development in respiratory disease, fibrosis, oncology, cardiovascular disorders, and immune-mediated diseases. The ADORA2B Stable Cell Line provides a valuable tool for studying adenosine receptor biology and advancing GPCR-targeted drug discovery programs.