SHP2 inhibitor PHPS1 ameliorates acute kidney injury by Erk1/2-STAT3 signaling in a combined murine hemorrhage followed by septic challenge model

Molecular Medicine

Jihong Jiang¹  Jinbao Li¹  Baoji Hu²  Yunhe Zhang³  Elizabeth W. Tindal⁴  Yaping Chen⁴  Chun-Shiang Chung⁴  Alfred Ayala⁴ 

[1] Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 200080, Shanghai, P.R. China;Department of Anesthesiology, Shanghai Pudong Hospital, Fudan University-Pudong Medical Center, 200433, Shanghai, P.R. China;Department of Emergency Medicine, Shanghai East Hospital, Tongji University School of Medicine, 200120, Shanghai, P.R. China;Division of Surgical Research, Department of Surgery, Aldrich 227, Rhode Island Hospital/ the Alpert School of Medicine at Brown University, 593 Eddy Street, 02903, Providence, RI, USA;

关键词: SHP2;    Acute kidney injury;    PHPS1;    Erk1/2;    STAT3;    Phosphatase inhibition;    AKI;    Hemorrhage;    Shock;    Sepsis;   

DOI  :  10.1186/s10020-020-00210-1

来源: Springer

【 摘 要 】

BackgroundHypovolemic shock and septic challenge are two major causes of acute kidney injury (AKI) in the clinic setting. Src homology 2 domain-containing phosphatase 2 (SHP2) is one of the major protein phosphatase tyrosine phosphatase (PTPs), which play a significant role in maintaining immunological homeostasis by regulating many facets of immune cell signaling. In this study, we explored whether SHP2 signaling contributed to development of AKI sequential hemorrhage (Hem) and cecal ligation and puncture (CLP) and whether inactivation of SHP2 through administration of its selective inhibitor, phenylhydrazonopyrazolone sulfonate 1 (PHPS1), attenuated this injury.MethodsMale C57BL/6 mice were subjected to Hem (a “priming” insult) followed by CLP or sham-Hem plus sham-CLP (S/S) as controls. Samples of blood and kidney were harvested at 24 h post CLP. The expression of neutrophil gelatinase-associated lipocalin (NGAL), high mobility group box 1 (HMGB1), caspase3 as well as SHP2:phospho-SHP2, extracellular-regulated kinase (Erk1/2): phospho-Erk1/2, and signal transducer and activator of transcription 3 (STAT3):phospho-STAT3 protein in kidney tissues were detected by Western blotting. The levels of creatinine (Cre) and blood urea nitrogen (BUN) in serum were measured according to the manufacturer’s instructions. Blood inflammatory cytokine/chemokine levels were detected by ELISA.ResultsWe found that indices of kidney injury, including levels of BUN, Cre and NGAL as well as histopathologic changes, were significantly increased after Hem/CLP in comparison with that in the S/S group. Furthermore, Hem/CLP resulted in elevated serum levels of inflammatory cytokines/chemokines, and induced increased levels of HMGB1, SHP2:phospho-SHP2, Erk1/2:phospho-Erk1/2, and STAT3:phospho-STAT3 protein expression in the kidney. Treatment with PHPS1 markedly attenuated these Hem/CLP-induced changes.ConclusionsIn conclusion, our data indicate that SHP2 inhibition attenuates AKI induced by our double-hit/sequential insult model of Hem/CLP and that this protective action may be attributable to its ability to mitigate activation of the Erk1/2 and STAT3 signaling pathway. We believe this is a potentially important finding with clinical implications warranting further investigation.

【 授权许可】

CC BY