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Article

EP4 knockdown alleviates glomerulosclerosis through Smad and MAPK pathways in mesangial cells

  • Authors:
    • Yingjie Cao
    • Tianyi Pan
    • Xiaolan Chen
    • Jianhua Wu
    • Naifeng Guo
    • Bicheng Wang
  • View Affiliations / Copyright

    Affiliations: Department of Nephrology, The Affiliated Hospital of Nantong University, Nantong, Jiangsu 226000, P.R. China, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200000, P.R. China, Basic Medical College, Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
  • Pages: 5141-5150
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    Published online on: October 12, 2018
       https://doi.org/10.3892/mmr.2018.9553
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Abstract

Prostaglandin E2 has exhibited pleiotropic effects in the regulation of glomerulosclerosis progression through its four receptors. The current study aimed to evaluate the effect of prostaglandin receptor EP4 on mesangial cell proliferation. In vivo, 5/6 nephrectomy was introduced into EP4+/‑ and wild‑type (WT) mice. Clinical parameters were monitored post‑surgery. At 8 weeks post‑surgery, glomerular fibrosis‑associated indicators were measured by immunohistochemical staining and trichrome staining. In vitro, mesangial cells in different groups (transfected with green fluorescent protein, AD‑EF4 or AD‑CRE) were exposed to transforming growth factor (TGF)‑β1 for 24 h to detect the level of downstream signaling. Corresponding signaling inhibitors were also used to validate the signaling effects. Following surgery, EP4+/‑ mice presented a higher survival rate and normal urine volume compared with the WT group, and serum creatinine level and 24 h urine protein were lower in the EP4+/‑ mice. Furthermore, associated profibrotic indicators were identified to have decreased at 8 weeks post‑surgery along with less tubule‑interstitial fibrosis. In vivo, the inhibition of extracellular signal‑regulated kinase and P38 phosphorylation alleviated the accumulation of mesangial matrix, and these signals were enhanced when EP4 was overexpressed. EP4 enhancement aggravated imbalanced mesangial cell proliferation stimulated by TGF‑β1 and GS of mice treated with 5/6 nephrectomy through the Smad and mitogen‑activated protein kinase pathways.
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Copy and paste a formatted citation
Spandidos Publications style
Cao Y, Pan T, Chen X, Wu J, Guo N and Wang B: EP4 knockdown alleviates glomerulosclerosis through Smad and MAPK pathways in mesangial cells. Mol Med Rep 18: 5141-5150, 2018.
APA
Cao, Y., Pan, T., Chen, X., Wu, J., Guo, N., & Wang, B. (2018). EP4 knockdown alleviates glomerulosclerosis through Smad and MAPK pathways in mesangial cells. Molecular Medicine Reports, 18, 5141-5150. https://doi.org/10.3892/mmr.2018.9553
MLA
Cao, Y., Pan, T., Chen, X., Wu, J., Guo, N., Wang, B."EP4 knockdown alleviates glomerulosclerosis through Smad and MAPK pathways in mesangial cells". Molecular Medicine Reports 18.6 (2018): 5141-5150.
Chicago
Cao, Y., Pan, T., Chen, X., Wu, J., Guo, N., Wang, B."EP4 knockdown alleviates glomerulosclerosis through Smad and MAPK pathways in mesangial cells". Molecular Medicine Reports 18, no. 6 (2018): 5141-5150. https://doi.org/10.3892/mmr.2018.9553
Copy and paste a formatted citation
x
Spandidos Publications style
Cao Y, Pan T, Chen X, Wu J, Guo N and Wang B: EP4 knockdown alleviates glomerulosclerosis through Smad and MAPK pathways in mesangial cells. Mol Med Rep 18: 5141-5150, 2018.
APA
Cao, Y., Pan, T., Chen, X., Wu, J., Guo, N., & Wang, B. (2018). EP4 knockdown alleviates glomerulosclerosis through Smad and MAPK pathways in mesangial cells. Molecular Medicine Reports, 18, 5141-5150. https://doi.org/10.3892/mmr.2018.9553
MLA
Cao, Y., Pan, T., Chen, X., Wu, J., Guo, N., Wang, B."EP4 knockdown alleviates glomerulosclerosis through Smad and MAPK pathways in mesangial cells". Molecular Medicine Reports 18.6 (2018): 5141-5150.
Chicago
Cao, Y., Pan, T., Chen, X., Wu, J., Guo, N., Wang, B."EP4 knockdown alleviates glomerulosclerosis through Smad and MAPK pathways in mesangial cells". Molecular Medicine Reports 18, no. 6 (2018): 5141-5150. https://doi.org/10.3892/mmr.2018.9553
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