The Journal of Practical Medicine ›› 2025, Vol. 41 ›› Issue (9): 1285-1292.doi: 10.3969/j.issn.1006-5725.2025.09.003

• Feature Reports:Nephrosis • Previous Articles    

MiRNA-155-5p aggravates renal injury in lupus nephritis by targeting OCS1 to regulate the JAK2/STAT3 signaling pathway

Aitao LIN1,Zhimin HUANG1,Zhiying ZHANG1,Tingna FU1,Liangxi LU1,Xiaoyu LIU1,Yini JIANG2,Leilei ZHAO1,Jinyu. WU2()   

  1. *.The First Clinical Medical College of Guangxi University of Traditional Chinese Medicine,Nanning 530200,Guangxi,China
  • Received:2024-11-06 Online:2025-05-10 Published:2025-05-20
  • Contact: Jinyu. WU E-mail:wujinyu0109@sina.com

Abstract:

Objective To investigate the effect and mechanism of miR-155-5p targeting suppressor of cytokine signaling 1 (SOCS1) in regulating the Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) signaling pathway in renal injury associated with lupus nephritis (LN). Methods Thirty female MRL-faslpr lupus model mice were randomly divided into five groups (n = 6 per group): the model group, the antagomir NC group, the miR-155-5p antagomir group, the miR-155-5p antagomir + shRNA control group, and the miR-155-5p antagomir + SOCS1 shRNA group. The mice were treated with adeno-associated virus vectors carrying miR-155-5p antagomir, antagomir NC, SOCS1 shRNA, or shRNA control. Additionally, six age-matched C57BL/6 mice served as a control group and received an equivalent volume of saline. Serum blood urea nitrogen (BUN) and creatinine (Scr) levels, renal histopathological changes, and the expression levels of miR-155-5p, SOCS1, phosphorylated JAK2 (p-JAK2), and phosphorylated STAT3 (p-STAT3) in renal tissues were evaluated. Results Compared with the normal group, the model group exhibited significantly elevated levels of BUN, Scr, miR-155-5p, p-JAK2, and p-STAT3 proteins in the kidneys (P < 0.01), while the expression level of SOCS1 was markedly reduced (P < 0.01). Compared with both the model group and the antagomir NC group, the miR-155-5p antagomir group showed decreased levels of BUN, Scr, miR-155-5p, p-JAK2, and p-STAT3 proteins (P < 0.01), along with a significant increase in SOCS1 expression (P < 0.01). Similarly, compared with the miR-155-5p antagomir group and the miR-155-5p antagomir + shRNA control group, the miR-155-5p antagomir + SOCS1 shRNA group demonstrated significantly higher levels of BUN, Scr, miR-155-5p, p-JAK2, and p-STAT3 proteins (P < 0.01), while SOCS1 expression was notably decreased (P < 0.01). Renal pathology analysis revealed that, compared to the normal group, the model group exhibited glomerular atrophy, extensive infiltration of inflammatory cells in the renal tubulointerstitial region, and partial renal tubular necrosis. In contrast, the miR-155-5p antagomir group showed marked improvements in glomerular atrophy, tubular necrosis, and inflammatory cell infiltration compared with the model group and antagomir NC group. Furthermore, compared with the miR-155-5p antagomir group and the miR-155-5p antagomir + shRNA control group, the miR-155-5p antagomir + SOCS1 shRNA group exhibited more severe glomerular atrophy, tubular necrosis, and inflammatory cell infiltration. Conclusion MiR-155-5p exacerbates renal damage in MRL-faslpr lupus model mice by targeting SOCS1, potentially through the activation of the JAK2/STAT3 signaling pathway.

Key words: lupus nephritis, miR-155-5p, suppressor of cytokine signaling 1, JAK2/STAT3 signaling pathway

CLC Number: