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Lu W, Guo Y, Liu H, Zhang T, Zhang M, Li X, Li Z, Shi M, Jiang Z, Zhao Z, Yang S, Li Z. The Inhibition of Fibrosis and Inflammation in Obstructive Kidney Injury via the miR-122-5p/SOX2 Axis Using USC-Exos. Biomater Res 2024; 28:0013. [PMID: 38617751 PMCID: PMC11014086 DOI: 10.34133/bmr.0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 02/14/2024] [Indexed: 04/16/2024] Open
Abstract
Background: Fibrosis and inflammation due to ureteropelvic junction obstruction substantially contributes to poor renal function. Urine-derived stem-cell-derived exosomes (USC-Exos) have therapeutic effects through paracrine. Methods: In vitro, the effects of USC-Exos on the biological functions of HK-2 and human umbilical vein endothelial cells were tested. Cell inflammation and fibrosis were induced by transforming growth factor-β1 and interleukin-1β, and their anti-inflammatory and antifibrotic effects were observed after exogenous addition of USC-Exos. Through high-throughput sequencing of microRNA in USC-Exos, the pathways and key microRNAs were selected. Then, the antifibrotic and anti-inflammatory effects of exosomal miR-122-5p and target genes were verified. The role of the miR-122-5p/SOX2 axis in anti-inflammatory and antifibrotic effects was verified. In vivo, a rabbit model of partial unilateral ureteral obstruction (PUUO) was established. Magnetic resonance imaging recorded the volume of the renal pelvis after modeling, and renal tissue was pathologically analyzed. Results: We examined the role of USC-Exos and their miR-122-5p content in obstructive kidney injury. These Exos exhibit antifibrotic and anti-inflammatory activities. SOX2 is the hub gene in PUUO and negatively related to renal function. We confirmed the binding relationship between miR-122-5p and SOX2. The anti-inflammatory and antifibrotic effects of miR-122-5p were inhibited, indicating that miR-122-5p has anti-inflammatory and antifibrotic effects by inhibiting SOX2 expression. In vivo, the PUUO group showed typical obstructive kidney injury after modeling. After USC-Exo treatment, the shape of the renal pelvis shown a remarkable improvement, and inflammation and fibrosis decreased. Conclusions: We confirmed that miR-122-5p from USC-Exos targeting SOX2 is a new molecular target for postoperative recovery treatment of obstructive kidney injury.
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Affiliation(s)
- Wenjun Lu
- Department of Pediatric Surgery,
The Sixth Hospital Affiliated to Harbin Medical University, Harbin Medical University, No.998 Aiying Street, Harbin 150027, Heilongjiang, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province,
School of Life Sciences, Westlake University,Hangzhou 310024, Zhejiang, China
- Center for Infectious Disease Research,
Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou 310024, Zhejiang, China
- Laboratory of Systems Immunology,
Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, Zhejiang, China
| | - Yujun Guo
- Department of Pediatric Surgery,
The Sixth Hospital Affiliated to Harbin Medical University, Harbin Medical University, No.998 Aiying Street, Harbin 150027, Heilongjiang, China
| | - Hengchen Liu
- Department of General Surgery,
The Second Hospital Affiliated to Zhejiang University School of Medicine, No. 88 Jiefang Road, Hangzhou 310022, Zhejiang, China
| | - Tingting Zhang
- Department of Pediatric Surgery,
The Sixth Hospital Affiliated to Harbin Medical University, Harbin Medical University, No.998 Aiying Street, Harbin 150027, Heilongjiang, China
| | - Mingzhao Zhang
- Department of General Surgery,
The Second Hospital Affiliated to Anhui Medical University, No. 678 Furong Road, Hefei 230031, Anhui, China
| | - Xiangqi Li
- Department of Pediatric Surgery,
The Sixth Hospital Affiliated to Harbin Medical University, Harbin Medical University, No.998 Aiying Street, Harbin 150027, Heilongjiang, China
| | - Zhou Li
- Department of Pediatric Surgery,
The Sixth Hospital Affiliated to Harbin Medical University, Harbin Medical University, No.998 Aiying Street, Harbin 150027, Heilongjiang, China
| | - Manyu Shi
- Department of Pediatric Surgery,
The Sixth Hospital Affiliated to Harbin Medical University, Harbin Medical University, No.998 Aiying Street, Harbin 150027, Heilongjiang, China
| | - Zhitao Jiang
- Department of Pediatric Surgery,
The Sixth Hospital Affiliated to Harbin Medical University, Harbin Medical University, No.998 Aiying Street, Harbin 150027, Heilongjiang, China
| | - Zheng Zhao
- Department of Pediatric Surgery,
The Sixth Hospital Affiliated to Harbin Medical University, Harbin Medical University, No.998 Aiying Street, Harbin 150027, Heilongjiang, China
| | - Shulong Yang
- Department of Pediatric Surgery,
The Sixth Hospital Affiliated to Harbin Medical University, Harbin Medical University, No.998 Aiying Street, Harbin 150027, Heilongjiang, China
| | - Zhaozhu Li
- Department of Pediatric Surgery,
The Sixth Hospital Affiliated to Harbin Medical University, Harbin Medical University, No.998 Aiying Street, Harbin 150027, Heilongjiang, China
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Yang Q, Wang C, Gao C, Maimaiti W, Li S, Jiang L, Shen M, Shen Y. Does baseline renal function always decrease after unilateral ureteral severe obstruction? -experimental validation and novel findings by Tc-99m diethylene triamine pentaacetate acid (DTPA) dynamic renal scintigraphy. Quant Imaging Med Surg 2019; 9:1451-1465. [PMID: 31559174 DOI: 10.21037/qims.2019.07.09] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background There is a lack of consensus concerning changes in renal function after unilateral ureteral obstruction. The aim of this study was to assess the influence of ureteral obstruction on renal morphology and function and to explore the effectiveness of dynamic renal scintigraphy in evaluating obstructive renal function. Methods We established a model of right ureteral obstruction using New Zealand white rabbits. We measured the glomerular filtration rate (GFR) before the operation and from days 1 to 82 after obstruction, observed the changes in bilateral kidney sizes and the GFR, and then compared the differences between the left and right kidneys. Results The difference between left and right kidney sizes was not significant before obstruction (t=-0.430, P=0.674); the right kidneys increased in size after obstruction and were larger than the left kidneys (P≤0.001). Obstructed kidneys demonstrated a morphological process of decelerated expansion and retraction. The difference in GFR between the left and right kidneys was not significant before obstruction (t=1.77, P=0.098); during days 1-21 and 42-82 after obstruction, the GFR of the right kidneys decreased and was lower than that of the left kidneys (P<0.001); on day 28, the GFR difference between the left and right kidneys (t=1.62, P=0.130) and the difference in the right kidney GFR before and after obstruction (t=1.03, P=0.323) were not significant. The GFR of obstructed kidneys rapidly declined initially, experienced a tortuous process of repeated dormancies and multiple self-recoveries, and then gradually declined. Conclusions The GFR in hydronephrotic kidneys is fluctuating. Thus, evaluating the true function of hydronephrotic kidneys using only baseline GFR is difficult; however, combining baseline GFR with renal morphology to assess obstructive renal function and its recoverability can provide more meaningful results.
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Affiliation(s)
- Qisheng Yang
- Emergency Center, Zhongnan Hospital of Wuhan University, Wuhan 430071, China.,Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Changyin Wang
- Department of Nuclear Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Chun Gao
- Second Clinical Faculty, Medical School of Wuhan University, Wuhan 430071, China
| | - Wasili Maimaiti
- Second Clinical Faculty, Medical School of Wuhan University, Wuhan 430071, China
| | - Shun Li
- Second Clinical Faculty, Medical School of Wuhan University, Wuhan 430071, China
| | - Linglong Jiang
- Department of Nuclear Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Meijuan Shen
- Department of Nuclear Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Ying Shen
- Department of Nuclear Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
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