2025/01/28 by Jindřich Sedláček, Zuzana Šmahelová, Michael Adamek +6 · 1 voice · 1 citation
Biochemistry, Genetics and Molecular Biology · #Genomics, phytochemicals, and oxidative stress #Aldose Reductase and Taurine #Coenzyme Q10 studies and effects
paper · doi:10.1016/j.biopha.2025.117864
openalex publication_date 2025/01/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
Intracellular protein aggregation causes proteotoxic stress, underlying highly debilitating neurodegenerative disorders in parallel with decreased proteasome activity. Nevertheless, under such stress conditions, the expression of proteasome subunits is upregulated by Nuclear Factor Erythroid 2-related factor 1 (NRF1), a transcription factor that is encoded by NFE2L1 . Activating the NRF1 pathway could accordingly delay the onset of neurodegenerative and other disorders with impaired cell proteostasis. Here, we present a series of small-molecule compounds based on bis(phenylmethylen)cycloalkanones and their heterocyclic analogues, identified via targeted library screening, that can induce NRF1-dependent downstream events, such as proteasome synthesis, heat shock response, and autophagy, in both model cell lines and Caenorhabditis elegans strains. These compounds increase proteasome activity and decrease the size and number of protein aggregates without causing any cellular stress or inhibiting the ubiquitin-proteasome system (UPS). Therefore, our compounds represent a new promising therapeutic approach for various protein conformational diseases, including the most debilitating neurodegenerative diseases. • Novel NRF1 activators enhance proteasome, heat shock, and autophagy pathways. • This activation occurs without inducing cellular stress or inhibiting the UPS. • The compounds reduce protein aggregates in both cell models and C. elegans . • The compounds represent original therapeutic potential for neurodegenerative diseases.