GRSF1 deficiency attenuates mitochondrial function in aging granulosa cells.
Canxin WenLinlin JiangPing PanJia HuangYanxin XieSongbang OuYu LiPublished in: Reproduction (Cambridge, England) (2024)
Ovarian aging critically influences reproductive potential, with a marked decrease in oocyte quality and quantity and an increase in oxidative stress and mitochondrial dysfunction. This study elucidates the role of guanine-rich RNA sequence binding factor 1 (GRSF1) in the aging of ovarian granulosa cells (GCs). We observed a significant reduction in GRSF1 within GCs correlating with patient age, utilizing clinical samples from IVF patients. Using an siRNA-mediated knockdown technique, we established that diminished GRSF1 expression exacerbates mitochondrial dysfunction, elevates reactive oxygen species, and impairs ATP production. Furthermore, RNA immunoprecipitation revealed GRSF1's interaction with superoxide dismutase 2 (SOD2) mRNA, a key antioxidant enzyme, suggesting a mechanism whereby GRSF1 modulates oxidative stress. Downregulation of SOD2 reversed the protective effects of GRSF1 overexpression on mitochondrial function. These insights into the role of GRSF1 in ovarian aging may guide the development of interventions to improve fertility outcomes in advanced age.
Keyphrases
- oxidative stress
- induced apoptosis
- end stage renal disease
- reactive oxygen species
- signaling pathway
- endoplasmic reticulum stress
- cell proliferation
- cell cycle arrest
- dna damage
- poor prognosis
- ejection fraction
- binding protein
- newly diagnosed
- physical activity
- chronic kidney disease
- type diabetes
- peritoneal dialysis
- drug delivery
- nitric oxide
- single cell
- skeletal muscle
- quality improvement
- nucleic acid
- long non coding rna