Expression of STEAP1 in Pulmonary Hypertension and Potential Clinical Value
10.3870/j.issn.1672-0741.25.04.009
- VernacularTitle:STEAP1在肺动脉高压中的表达及其潜在临床价值
- Author:
Xin WANG
1
;
Tianyuan YUE
;
Chen LI
Author Information
1. 华中科技大学同济医学院附属同济医院心脏大血管外科,武汉 430030
- Publication Type:Journal Article
- Keywords:
pulmonary hypertension;
six-transmembrane epithelial antigen of prostate 1;
pulmonary artery smooth muscle cells;
bioinformatics analysis
- From:
Acta Medicinae Universitatis Scientiae et Technologiae Huazhong
2025;54(5):609-616
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the expression pattern of six-transmembrane epithelial antigen of prostate 1(STEAP1)in pulmonary hypertension(PH)rat model and explore its potential clinical value.Methods A hypoxia-induced pulmonary arte-rial smooth muscle cell(PASMC)model was established,and the expression levels of STEAP1 in the hypoxia cell model were detected using Western blot and immunofluorescence analysis.Nine patients diagnosed with PH through right heart catheteriza-tion during hospitalization in the Division of Cardiovascular Surgery at Tongji Hospital,Tongji Medical College,Huazhong Uni-versity of Science and Technology,were selected as the PH group.Four organ donors without pulmonary disease were selected as the control group.Western blot analysis was used to detect STEAP1 expression levels in lung tissue from both groups.A rat PH model was established by Sugen5416 couple with chronic hypoxia treatment(SuHx,and control rats were housed in an at-mospheric environment).Hematoxylin-eosin staining and immunohistochemistry staining were used to detect α-SMA expression in lung tissue,and the degree of pulmonary artery perivascular cluster lesions and vascular muscularization in model rats was as-sessed.Dual-color immunofluorescence staining was used to co-stain α-SMA and STEAP1 to detect the expression levels and tis-sue localization of STEAP1 in the lung tissue of model rats.Bioinformatics methods were employed to analyze the potential downstream regulatory mechanisms of STEAP1.Results STEAP1 expression level was significantly upregulated in the hypoxi-a-induced PASMCs.STEAP1 expression level was also upregulated in the lung tissue of PH patients.Compared with the control group,the pulmonary arteries of rats with PH showed significant remodeling,particularly with marked thickening of the pulmo-nary arterial smooth muscle layer;STEAP1 expression was significantly upregulated in the thickened pulmonary arterial smooth muscle layer of rats with PH(P＜0.01).Bioinformatic analysis suggested that the downstream regulatory mechanisms of STEAP1 were enriched in signaling pathways such as apoptosis.Conclusion STEAP1 expression level is upregulated in the thickened pulmonary arterial smooth muscle layer in PH,suggesting that it may be associated with the pathological mechanisms of pulmonary vascular remodeling and may participate in the development of PH through signaling pathways such as apopto-sis.Further exploration of STEAP1 may uncover new targets for basic research and clinical prevention and treatment.
