SLU-PP-332

SLU-PP-332 is a synthetic small-molecule pan-agonist of the estrogen-related receptors ERRα, ERRβ, and ERRγ, a family of orphan nuclear receptors that coordinate cellular energy programs. It is supplied as an investigational laboratory compound for use in mitochondrial-pathway research, exercise-mimetic research, and energy-metabolism research.

Laboratory research studies have positioned SLU-PP-332 as a reference tool compound for activating ERR-driven transcriptional networks that overlap with the molecular response to endurance exercise. Research models have characterised its receptor-binding profile across ERRα, ERRβ, and ERRγ, co-activator recruitment dynamics, and downstream effects on mitochondrial biogenesis, fatty-acid oxidation, and skeletal-muscle fiber composition (Billon et al., 2023, ACS Chemical Biology).

Beyond systemic energy metabolism, SLU-PP-332 is investigated in cellular and animal research models that explore cardiac mitochondrial homeostasis, oxidative muscle-fiber remodeling, and metabolic-syndrome research endpoints. The compact small-molecule scaffold and its selective ERR engagement also make SLU-PP-332 a frequent subject of structure-activity and chemical-biology research on nuclear-receptor pharmacology.

The compound is supplied as a lyophilized powder to ensure optimal stability during storage and handling.

The estrogen-related receptors (ERRα, ERRβ, ERRγ) are orphan nuclear receptors structurally related to estrogen receptors but unresponsive to estradiol. They function as master transcriptional regulators of oxidative metabolism, mitochondrial biogenesis, fatty-acid oxidation, and skeletal-muscle fiber specialisation.

Modern metabolic-pathway research, including energy-homeostasis and glucose-regulation research, links impaired mitochondrial function and reduced oxidative capacity to a range of laboratory model phenotypes. Physical exercise counteracts these processes by activating transcriptional networks that enhance mitochondrial biogenesis, fatty-acid oxidation, and insulin sensitivity. ERR signaling sits at the centre of this exercise-responsive program.

SLU-PP-332 was developed as a synthetic ERR agonist that directly stimulates these transcriptional pathways in the absence of physical exercise, enabling researchers to study ERR biology, mitochondrial regulation, and exercise-mimetic mechanisms in controlled in vitro and in vivo model systems.

1. Activation of Cellular Energy Programs

SLU-PP-332 binds to the ligand-binding domain of ERRα, ERRβ, and ERRγ and promotes co-activator recruitment, initiating transcription of genes responsible for mitochondrial biogenesis and oxidative metabolism. This shifts cellular energy production toward aerobic pathways and is reported in research models to improve overall metabolic efficiency in skeletal muscle and adipose tissue.

2. Enhancement of Fatty-Acid Oxidation

ERR activation by SLU-PP-332 increases expression of enzymes involved in lipid transport and mitochondrial β-oxidation. Research models report enhanced utilisation of fatty acids as a primary energy source, reduced lipid accumulation in peripheral tissues, and shifts in substrate selection consistent with an oxidative metabolic phenotype.

3. Skeletal-Muscle Fiber Remodeling

In skeletal-muscle research models, SLU-PP-332 increases the proportion of oxidative type IIa fibers. These fibers exhibit higher mitochondrial density and endurance capacity, providing a mechanistic basis for the exercise-like adaptations observed in animal research models and supporting use of SLU-PP-332 as an exercise-mimetic research tool.

4. Cardiometabolic Effects

In cardiac-tissue research models, ERR-driven transcription supports mitochondrial integrity, improves myocardial energy utilisation, and is reported to attenuate fibrotic signaling. Experimental models of cardiac dysfunction have used SLU-PP-332 to investigate ERR-pathway contributions to mitochondrial-based cardiac-research strategies.

Research Applications

Conclusion

SLU-PP-332 is a highly selective pan-ERR agonist that reproduces key molecular signatures of endurance exercise at the cellular level. By enhancing mitochondrial function, promoting fatty-acid oxidation, and remodeling muscle and cardiac energy programs in research models, it offers broad value as a tool compound across metabolic, cardiovascular, and exercise-biology research.

Research Use Disclaimer

This product is intended for research and laboratory use only. It is designed exclusively for in vitro research purposes. All information provided is for educational and research reference only. This product is not intended for human or animal use. It is not a drug, food, or cosmetic and must not be marketed, labeled, or used as such. Use and handling are restricted to trained and qualified professionals.