Regulation of Notch1/Hes1 signaling axis by total flavonoids of Drynariae Rhizoma for promoting chondrocyte autophagy and inhibiting apoptosis：a mechanistic study
- VernacularTitle:骨碎补总黄酮调控Notch1/Hes1信号轴促进软骨细胞自噬并抑制凋亡的机制研究
- Author:
Lin LU
1
;
Hong FANG
2
Author Information
1. Dept. of Orthopedics and Traumatology，Wuhan Hospital of Traditional Chinese Medicine （Guoyi Hospital Affiliated to Hubei University of Chinese Medicine），Wuhan 430006，China
2. Dept. of Gynaecology，Hubei Provincial Hospital of Traditional Chinese Medicine （the Affiliated Hospital of Hubei University of Chinese Medicine），Wuhan 430006，China
- Publication Type:Journal Article
- Keywords:
total flavonoids of Drynariae Rhizoma;
chondrocyte;
Notch1/Hes1 signaling axis;
autophagy;
apoptosis
- From:
China Pharmacy
2026;37(8):1027-1032
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To investigate the effects of total flavonoids of Drynariae Rhizoma （TFRD） on autophagy and apoptosis in LPS-induced chondrocytes via the regulation of the Notch1/hairy and enhancer of split 1 （Notch1/Hes1） signaling axis. METHODS Human chondrocyte cell line C28/I2 cells were cultured with 5 μg/mL LPS to esta blish in vitro inflammatory injury model. The cells were separated into normal control group， model group， TFRD group （200 μg/mL）， TFRD+peroxiredoxin 1 （Prdx1） small interfering RNA （si-Prdx1） group and TFRD+si-Prdx1 negative control （si-NC） group， with 6 replicate wells in each group. Cells were transfected with si-Prdx1 or si-NC for 24 hours， pretreated with TFRD for 2 hours， and then exposed to LPS， with a total culture duration of 48 hours. Apoptotic rate， the proportion of apoptotic cells， monodansylcadaverine （MDC） fluorescence intensity， as well as the contents of matrix metalloproteinase-13 （MMP-13）， a disintegrin and metalloproteinase with thrombospondin motifs 5 （ADAMTS5）， and cartilage oligomeric matrix protein （COMP） were measured. Additionally， the protein expression levels of X-linked inhibitor of apoptosis protein （XIAP）， poly（ADP-ribose） polymerase 1 （PARP1）， Beclin-1， microtubule-associated protein 1 light chain 3 Ⅱ/Ⅰ （LC3-Ⅱ/Ⅰ）， PTEN-induced putative kinase 1 （PINK1）， Notch1， Hes1， and Prdx1 were assessed. RESULTS Compared with model group， the apoptotic rate， the proportion of apoptotic cells， the contents of MMP-13 and ADAMTS5 as well as protein expressions of PARP1 were significantly decreased， while MDC fluorescence intensity， COMP content， protein expressions of XIAP， Beclin-1， LC3-Ⅱ/Ⅰ， PINK1， Notch1， Hes1 and Prdx1 were significantly increased （ P ＜0.05）. Compared with TFRD+si-NC group， the changes in the aforementioned indicators （except for Notch1 and Hes1） in the cells of the TFRD+si-Prdx1 group were significantly reversed （ P ＜0.05）. CONCLUSIONS TFRD may activate the Notch1/Hes1 signaling axis， and up-regulate the expression of the downstream target molecule Prdx1， thereby inhibiting LPS-induced chondrocyte apoptosis， promoting protective autophagy， and consequently improving cartilage metabolic homeostasis.
