1
|
Xing Z, Gong K, Hu N, Chen Y. The Reduction of Uromodulin, Complement Factor H, and Their Interaction Is Associated with Acute Kidney Injury to Chronic Kidney Disease Transition in a Four-Time Cisplatin-Injected Rat Model. Int J Mol Sci 2023; 24:ijms24076636. [PMID: 37047611 PMCID: PMC10095257 DOI: 10.3390/ijms24076636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/21/2023] [Accepted: 03/27/2023] [Indexed: 04/05/2023] Open
Abstract
Uromodulin is recognized as a protective factor during AKI-to-CKD progression, but the mechanism remains unclear. We previously reported that uromodulin interacts with complement factor H (CFH) in vitro, and currently aimed to study the expression and interaction evolution of uromodulin and CFH during AKI-to-CKD transition. We successfully established a rat model of AKI-to-CKD transition induced by a four-time cisplatin treatment. The blood levels of BUN, SCR, KIM-1 and NGAL increased significantly during the acute injury phase and exhibited an uptrend in chronic progression. PAS staining showed the nephrotoxic effects of four-time cisplatin injection on renal tubules, and Sirius red highlighted the increasing collagen fiber. Protein and mRNA levels of uromodulin decreased while urine levels increased in acute renal injury on chronic background. An extremely diminished level of uromodulin correlated with severe renal fibrosis. RNA sequencing revealed an upregulation of the alternative pathway in the acute stage. Renal CFH gene expression showed an upward tendency, while blood CFH localized less, decreasing the abundance of CFH in kidney and following sustained C3 deposition. A co-IP assay detected the linkage between uromodulin and CFH. In the model of AKI-to-CKD transition, the levels of uromodulin and CFH decreased, which correlated with kidney dysfunction and fibrosis. The interaction between uromodulin and CFH might participate in AKI-to-CKD transition.
Collapse
Affiliation(s)
- Zheyu Xing
- Renal Division, Peking University First Hospital, Beijing 100034, China
- Institute of Nephrology, Peking University, Beijing 100034, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing 100034, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing 100034, China
| | - Kunjing Gong
- Renal Division, Peking University First Hospital, Beijing 100034, China
- Institute of Nephrology, Peking University, Beijing 100034, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing 100034, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing 100034, China
| | - Nan Hu
- Renal Division, Peking University First Hospital, Beijing 100034, China
- Institute of Nephrology, Peking University, Beijing 100034, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing 100034, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing 100034, China
| | - Yuqing Chen
- Renal Division, Peking University First Hospital, Beijing 100034, China
- Institute of Nephrology, Peking University, Beijing 100034, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing 100034, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing 100034, China
| |
Collapse
|
2
|
Shen F, Liu M, Pei F, Yu L, Yang X. Role of uromodulin and complement activation in the progression of kidney disease. Oncol Lett 2021; 22:829. [PMID: 34691256 PMCID: PMC8527566 DOI: 10.3892/ol.2021.13090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 03/26/2021] [Indexed: 11/13/2022] Open
Abstract
Uromodulin (UMOD) is a glycoprotein that is selectively expressed on the epithelial cells of the thick ascending limb of Henle's loop and the early distal renal tubule. The present study aimed to investigate whether UMOD was associated with complement activation in patients with renal diseases. In addition, its biological function was examined in vitro. The expression levels of UMOD and complement components, including C1q, C3, C4 and C3a, and membrane attack complex (MAC) in the plasma of patients with IgA nephropathy (IgAN; n=58) and lupus nephritis (LN; n=36) were detected using ELISA, which was used to determine the association between UMOD expression and complement components. In addition, a simulated hypoxia-reoxygenation (H/R) model was used to stimulate UMOD expression in mouse inner medullary collecting duct cells. Additionally, the association between UMOD expression and complement components C1q and C3d at the cellular level was identified using western blotting and immunofluorescence, respectively. It was revealed that the plasma UMOD concentration was significantly decreased in patients with IgAN and LN compared with in healthy controls, and the levels of C3a and MAC were significantly increased in the plasma of patients with IgAN and LN. Furthermore, the plasma levels of C1q, C3 and C4 in patients with LN, but not in patients with IgAN, were significantly decreased compared with in healthy controls. The plasma levels of UMOD were negatively correlated with the plasma C3a and MAC concentrations. However, the plasma levels of UMOD were significantly and positively correlated with the plasma C1q concentration, but not with that of C3 and C4. It was identified that UMOD expression started to increase after 1 h of simulated H/R, and continued to increase at 6 and 12 h. In addition, cells with lower UMOD expression had higher C3d expression in vitro. Collectively, the present results suggested that UMOD was associated with severe complement activation and may be involved in complement-mediated immune protection by inhibiting complement activation in renal disease.
Collapse
Affiliation(s)
- Fei Shen
- Department of Nephrology, Qi Lu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Maojing Liu
- Department of Nephrology, Qi Lu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Fei Pei
- Department of Nephrology, Qi Lu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Li Yu
- Department of Nephrology, Qi Lu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China.,Department of Cardiovascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250012, P.R. China
| | - Xiangdong Yang
- Department of Nephrology, Qi Lu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| |
Collapse
|
3
|
Bai L, Xie Q, Xia M, Gong K, Wang N, Chen Y, Zhao M. The importance of sialic acid, pH and ion concentration on the interaction of uromodulin and complement factor H. J Cell Mol Med 2021; 25:4316-4325. [PMID: 33788378 PMCID: PMC8093974 DOI: 10.1111/jcmm.16492] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 03/05/2021] [Accepted: 03/10/2021] [Indexed: 02/06/2023] Open
Abstract
Uromodulin (UMOD) can bind complement factor H (cFH) and inhibit the activation of complement alternative pathway (AP) by enhancing the cofactor activity of cFH on degeneration of C3b. UMOD, an N-glycans-rich glycoprotein, is expressed in thick ascending limb of Henle's loop where the epithelia need to adapt to gradient change of pH and ion concentration. ELISA-based cofactor activity of cFH and erythrocytes haemolytic assay was used to measure the impact of native and de-glycosylated UMOD on the functions of cFH. The binding assay was performed under different pH and ion concentrations, using ELISA. The levels of sialic acid on UMOD, from healthy controls and patients with chronic kidney disease (CKD), were also detected by lectin-ELISA. It was shown that removal of glycans decreased the binding between UMOD and cFH and abolished the ability of enhancing C3b degradation. In acidic condition, the binding became stronger, but it reduced as sodium concentration increased. A significant decrease of α-2,3 sialic acids on UMOD was observed in CKD patients compared with that of healthy individuals. The sialic acids on UMOD, local pH and sodium concentration could impact the binding capacity between UMOD and cFH and thus regulate the activation of complement AP.
Collapse
Affiliation(s)
- Lufeng Bai
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Peking University Institute of Nephrology, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Beijing, China
| | - Qiuyu Xie
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Peking University Institute of Nephrology, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
| | - Min Xia
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Peking University Institute of Nephrology, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
| | - Kunjing Gong
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Peking University Institute of Nephrology, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
| | - Na Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Peking University Institute of Nephrology, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
| | - Yuqing Chen
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Peking University Institute of Nephrology, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
| | - Minghui Zhao
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Peking University Institute of Nephrology, Beijing, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Beijing, China
| |
Collapse
|
4
|
Brown CJ, Gaunitz S, Wang Z, Strindelius L, Jacobson SC, Clemmer DE, Trinidad JC, Novotny MV. Glycoproteomic Analysis of Human Urinary Exosomes. Anal Chem 2020; 92:14357-14365. [PMID: 32985870 PMCID: PMC7875506 DOI: 10.1021/acs.analchem.0c01952] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Exosomes represent a class of secreted biological vesicles, which have recently gained attention due to their function as intertissue and interorganism transporters of genetic materials, small molecules, lipids, and proteins. Although the protein constituents of these exosomes are often glycosylated, a large-scale characterization of the glycoproteome has not yet been completed. This study identified 3144 unique glycosylation events belonging to 378 glycoproteins and 604 unique protein sites of glycosylation. With these data, we investigated the level of glycan microheterogeneity within the urinary exosomes, finding on average 5.9 glycans per site. The glycan family abundance on individual proteins showed subtle differences, providing an additional level of molecular characterization compared to the unmodified proteome. Finally, we show protein site-specific changes in regard to the common urinary glycoprotein, uromodulin. While uromodulin is an individual case, these same site-specific analyses provide a way forward for developing diagnostic glycoprotein biomarkers with urine as a noninvasive biological fluid. This study represents an important first step in understanding the functional urinary glycoproteome.
Collapse
Affiliation(s)
- Christopher J Brown
- Department of Chemistry, Indiana University, 800 Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Stefan Gaunitz
- Department of Chemistry, Indiana University, 800 Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Ziyu Wang
- Department of Chemistry, Indiana University, 800 Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Lena Strindelius
- Department of Chemistry, Indiana University, 800 Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Stephen C Jacobson
- Department of Chemistry, Indiana University, 800 Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - David E Clemmer
- Department of Chemistry, Indiana University, 800 Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Jonathan C Trinidad
- Department of Chemistry, Indiana University, 800 Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Milos V Novotny
- Department of Chemistry, Indiana University, 800 Kirkwood Avenue, Bloomington, Indiana 47401, United States
| |
Collapse
|
5
|
Wang Z, Li MX, Xu CZ, Zhang Y, Deng Q, Sun R, Hu QY, Zhang SP, Zhang JW, Liang H. Comprehensive study of altered proteomic landscape in proximal renal tubular epithelial cells in response to calcium oxalate monohydrate crystals. BMC Urol 2020; 20:136. [PMID: 32867742 PMCID: PMC7461262 DOI: 10.1186/s12894-020-00709-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 08/26/2020] [Indexed: 12/18/2022] Open
Abstract
Background Calcium oxalate monohydrate (COM), the major crystalline composition of most kidney stones, induces inflammatory infiltration and injures in renal tubular cells. However, the mechanism of COM-induced toxic effects in renal tubular cells remain ambiguous. The present study aimed to investigate the potential changes in proteomic landscape of proximal renal tubular cells in response to the stimulation of COM crystals. Methods Clinical kidney stone samples were collected and characterized by a stone component analyzer. Three COM-enriched samples were applied to treat human proximal tubular epithelial cells HK-2. The proteomic landscape of COM-crystal treated HK-2 cells was screened by TMT-labeled quantitative proteomics analysis. The differentially expressed proteins (DEPs) were identified by pair-wise analysis. Gene Ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis of DEPs were performed. Protein interaction networks were identified by STRING database. Results The data of TMT-labeled quantitative proteomic analysis showed that a total of 1141 proteins were differentially expressed in HK-2 cells, of which 699 were up-regulated and 442 were down-regulated. Functional characterization by KEGG, along with GO enrichments, suggests that the DEPs are mainly involved in cellular components and cellular processes, including regulation of actin cytoskeleton, tight junction and focal adhesion. 3 high-degree hub nodes, CFL1, ACTN and MYH9 were identified by STRING analysis. Conclusion These results suggested that calcium oxalate crystal has a significant effect on protein expression profile in human proximal renal tubular epithelial cells.
Collapse
Affiliation(s)
- Zhu Wang
- Department of Urology, People's Hospital of Longhua, Southern Medical University, Shenzhen, 518109, Guangdong, China.
| | - Ming-Xing Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Chang-Zhi Xu
- Department of Laboratory Medicine, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, 510630, People's Republic of China
| | - Ying Zhang
- Department of Urology, People's Hospital of Longhua, Southern Medical University, Shenzhen, 518109, Guangdong, China
| | - Qiong Deng
- Department of Urology, People's Hospital of Longhua, Southern Medical University, Shenzhen, 518109, Guangdong, China
| | - Rui Sun
- Department of Urology, People's Hospital of Longhua, Southern Medical University, Shenzhen, 518109, Guangdong, China
| | - Qi-Yi Hu
- Department of Urology, People's Hospital of Longhua, Southern Medical University, Shenzhen, 518109, Guangdong, China
| | - Sheng-Ping Zhang
- Department of Urology, People's Hospital of Longhua, Southern Medical University, Shenzhen, 518109, Guangdong, China
| | - Jian-Wen Zhang
- Department of Urology, People's Hospital of Longhua, Southern Medical University, Shenzhen, 518109, Guangdong, China
| | - Hui Liang
- Department of Urology, People's Hospital of Longhua, Southern Medical University, Shenzhen, 518109, Guangdong, China.
| |
Collapse
|