N-acetyloxfenicine strongly induces mitohormesis in mice as well as in insects.
Takashi MatsumuraMasaya OnoSatoshi OsadaFumikazu MatsuhisaMasanori OchiaiYoichi HayakawaPublished in: FEBS letters (2023)
Mitohormesis defines the increase in fitness induced by adaptive responses to mild mitochondrial stress. Here, we show that N-acetyloxfenicine (NAO) exerted higher thermotolerance than an endogenous mitohormesis inducer, N-acetyltyrosine (NAT). This activity was not observed in armyworm larvae injected with oxfenicine, suggesting the importance of N-acetylation. NAO-induced hormetic effect was triggered by transient perturbation of mitochondria, which causes a small increase in ROS production and leads to retrograde responses including enhanced expression of antioxidant enzyme genes via activation of FoxO transcription factors. Furthermore, pretreatment with NAO significantly repressed stress-induced peroxidation of lipids in mice and growth of colorectal cancer HCT116 cells that had been transplanted into nude mice. Taken together, NAO is a potent mitohormesis inducer that is similar to NAT in terms of structure and functions.
Keyphrases
- stress induced
- high fat diet induced
- transcription factor
- cell death
- cell cycle arrest
- oxidative stress
- poor prognosis
- induced apoptosis
- signaling pathway
- body composition
- anti inflammatory
- type diabetes
- gene expression
- skeletal muscle
- genome wide
- dna damage
- metabolic syndrome
- genome wide identification
- heat shock
- pi k akt
- cell proliferation
- fatty acid
- binding protein
- heat stress
- dna binding