#$%^&*AU2018202132B220191114.pdf#####ABSTRACT The present invention discloses an application of a P3 adrenergic receptor (ADRB3) as a marker for detecting a plurality of diseases, and an application of anti-human ADRB3 5 monoclonal antibody in diagnosing a disease and preparing a drug for treating the disease. The present invention finds through research that the ADRB3 is a key receptor in nerve- endocrineimmunoregulatory network, and an ADRB3-mediated signaling pathway regulates proliferation and differentiation of neutrophils, lymphocytes and tumor cells. Under normal circumstances, the ADRB3 maintains the non-specific immunocompetence and specific 10 immunocompetence of an organism, and eliminates pathogenic microorganisms and aged organism tissues to play a role in protecting the organism and anti-aging. Under pathological conditions, excessive activation of the signaling pathway will cause systemic chronic inflammation, and destroy immune homeostasis. Therefore, the ADRB3 can be used as a diagnostic marker and a therapeutic target for a plurality of diseases. Anti-human ADRB3 15 antibody can specifically bond with the ADRB3, regulate the activity of the ADRB3, has the functions of resisting cancer, inflammation, poisoning, shock, allergy, viral infection, autoimmune disease, disease caused by regenerative dysfunction, autoimmune disease, cachexia, cardiovascular and cerebrovascular disease, neurodegenerative disease and aging, regulating autophagy, treating aging disease, etc., and has important medical value and research 20 and application prospects.
