The mechanism of miR-10b targeting TGFBR1/SMAD3 pathway on chondrocyte proliferation and hypertrophy in idiopathic short stature
- VernacularTitle:miR-10b靶向TGFBR1/SMAD3通路对特发性矮小症的软骨细胞增殖、肥大的影响机制
- Author:
Na HU
1
;
Zhengyu LI
;
Chunfeng YE
;
Ying WU
;
Qing YAO
;
Shixiang HUANG
;
Wen LI
;
Haiqin ZHU
Author Information
- Keywords: idiopathic short stature; receptor,transforming growth factor-beta type Ⅰ; miR-10b; Smad3 protein
- From: Tianjin Medical Journal 2024;52(2):124-128
- CountryChina
- Language:Chinese
- Abstract: Objective To investigate the effect and mechanism of microRNA-10b(miR-10b)on idiopathic short stature(ISS).Methods A total of 54 children with ISS and 54 healthy children were collected.The serum expression of miR-10b was detected by RT-qPCR,and the relationship between serum miR-10b expression and clinical data of children with ISS was analyzed.miR-10b inhibitor,si-TGFBR1 and their negative control transfection C28/I2 cells were used.CCK-8 experimental detection was used to detect C28/I2 cell proliferation.Western blot assay was used to detect gnome related transcription factor 2(RUNX2),collagen type X alpha 1 chain(COL10A1),transforming growth factor beta receptor 1(TGFBR1),SMAD3 and pSMAD3 protein expression.The target of miR-10b was screened in StarBase database,and the targeting relationship between miR-10b and TGFBR1 was verified by dual luciferase reporter gene assay.Results The serum expression of miR-10b was higher in the ISS group than that of the healthy control group,and the higher the miR-10b expression,the more obvious the decrease of child height,IGF-1 and alkaline phosphatase(P＜0.05).Compared with the NC group,the cell proliferation ability and RUNX2,COL10A1,TGFBR1,and pSMAD3 protein expression were up-regulated in the miR-10b inhibitor group(P＜0.05).StarBase database suggested that miR-10b had a binding site of TGFBR1,and dual luciferase reporter gene assay confirmed that TGFBR1 interacted with miR-10b(P＜0.05).Compared with the si-NC group,the expression of TGFBR1 was down-regulated and the cell proliferation ability was decreased in the si-TGFBR1 group(P＜0.05).Conclusion miR-10b inhibits chondrocyte proliferation and hypertrophy in idiopathic short stature by targeting TGFBR1/SMAD3 pathway.
