estrogen-related receptor a (err-a)

ERRα antagonist-1 (ERR+ - antagonist-1) is a high-affinity, selective antagonist of the estrogen-related receptor α (ERRα). It effectively prevents the interaction of ERRα with both Proliferator-activated Receptor γ Coactivator-1α (PGC-1α) and PGC-1β, displaying IC50 values of 170 nM and 180 nM, respectively. Notably, ERRα antagonist-1 does not interfere with the interactions involving ERRβ or ERRγ and the PGC-1α and PGC-1β coactivators. Furthermore, it does not affect the interaction between either ERα or ERβ and PGC-1α or SRC-1.

ERRα antagonist-2 (Compound 11) is an estrogen-related receptor α inverse agonist with an IC50 of 0.80 μM, capable of inhibiting migration and invasion in ER-negative MDA-MB-231 cells and suppressing breast cancer growth.

SLU-PP-332 is a pan-estrogen receptor-related receptor (ERR) agonist with high affinity for ERRα, ERRβ, and ERRγ, exhibiting EC50 values of 98, 230, and 430 nM, respectively. SLU-PP-332 enhances mitochondrial function and cellular respiration, increases type IIa oxidized skeletal muscle fibers, and enhances exercise tolerance in skeletal muscle cell lines. It has potential applications in the study of metabolic diseases, improvement of muscle function, and amelioration of metabolic disorders and aging.