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Qi Y, Zheng J, Zi Y, Song W, Chen X, Cao S, Zhou Q, Fu H, Hu X. Loureirin C improves mitochondrial function by promoting NRF2 nuclear translocation to attenuate oxidative damage caused by renal ischemia-reperfusion injury. Int Immunopharmacol 2024; 138:112596. [PMID: 38981224 DOI: 10.1016/j.intimp.2024.112596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 06/15/2024] [Accepted: 06/27/2024] [Indexed: 07/11/2024]
Abstract
Acute kidney injury (AKI) is a common clinical syndrome worldwide, with no effective treatment strategy. Renal ischemia-reperfusion (IR) injury is one of the main AKI features, and the excessive reactive oxygen species (ROS) production during reperfusion causes severe oxidative damage to the kidney. Loureirin C (LC), an active ingredient in the traditional Chinese medicine Chinese dragon's blood, possesses excellent antioxidative properties, but its role in renal IR injury is not clear. In this study, we evaluated the protective effects of LC against renal IR injury in vivo and in vitro by establishing a mice renal IR injury model and a human proximal renal tubular epithelial cell (HK-2) hypoxia/reoxygenation (HR) model. We found that LC ameliorated renal function and tissue structure injury and inhibited renal oxidative stress and ferroptosis in vivo. In vitro, LC scavenged ROS and attenuated mitochondrial dysfunction in HK-2 cells, thereby inhibiting oxidative cellular injury. Furthermore, we found that LC effectively promoted nuclear factor erythroid 2-related factor 2 (NRF2) nuclear translocation and activated downstream target genes heme oxygenase 1 (HO-1) and NADPH quinone oxidoreductase-1 (NQO-1) to enhance cellular antioxidant function. Moreover, NRF2 knockdown and pharmacological inhibition of NRF2 partially eliminated the protective effect of LC. These results confirm that LC can effectively inhibit renal IR injury, and the mechanism may be associated with NRF2 activation by LC.
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Affiliation(s)
- Yucheng Qi
- Department of Urology, Affiliated Nanhua Hospital, University of South China, China; The Fourth People's Hospital of Hengyang, China
| | - Jinli Zheng
- Department of Hepatobiliary Surgery, Affiliated Nanhua Hospital, University of South China, China
| | - Yuan Zi
- The Fourth People's Hospital of Hengyang, China
| | - Wenke Song
- Department of Medical Department, Affiliated Nanhua Hospital, University of South China, China
| | - Xuancai Chen
- Department of Urology, Affiliated Nanhua Hospital, University of South China, China
| | - Shahuang Cao
- Department of Urology, Affiliated Nanhua Hospital, University of South China, China
| | - Qun Zhou
- Department of Urology, Affiliated Nanhua Hospital, University of South China, China
| | - Hao Fu
- Department of Urology, Affiliated Nanhua Hospital, University of South China, China.
| | - Xinyi Hu
- Department of Clinical Laboratory, Affiliated Nanhua Hospital, University of South China, China.
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2
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Polonsky M, Gerhardt LMS, Yun J, Koppitch K, Colón KL, Amrhein H, Wold B, Zheng S, Yuan GC, Thomson M, Cai L, McMahon AP. Spatial transcriptomics defines injury specific microenvironments and cellular interactions in kidney regeneration and disease. Nat Commun 2024; 15:7010. [PMID: 39237549 DOI: 10.1038/s41467-024-51186-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 08/01/2024] [Indexed: 09/07/2024] Open
Abstract
Kidney injury disrupts the intricate renal architecture and triggers limited regeneration, together with injury-invoked inflammation and fibrosis. Deciphering the molecular pathways and cellular interactions driving these processes is challenging due to the complex tissue structure. Here, we apply single cell spatial transcriptomics to examine ischemia-reperfusion injury in the mouse kidney. Spatial transcriptomics reveals injury-specific and spatially-dependent gene expression patterns in distinct cellular microenvironments within the kidney and predicts Clcf1-Crfl1 in a molecular interplay between persistently injured proximal tubule cells and their neighboring fibroblasts. Immune cell types play a critical role in organ repair. Spatial analysis identifies cellular microenvironments resembling early tertiary lymphoid structures and associated molecular pathways. Collectively, this study supports a focus on molecular interactions in cellular microenvironments to enhance understanding of injury, repair and disease.
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Affiliation(s)
- Michal Polonsky
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Louisa M S Gerhardt
- Department of Stem Cell Biology and Regenerative Medicine, Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA
- Fifth Department of Medicine, University Medical Centre Mannheim, University of Heidelberg, Mannheim, Germany
| | - Jina Yun
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Kari Koppitch
- Department of Stem Cell Biology and Regenerative Medicine, Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA
| | - Katsuya Lex Colón
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Henry Amrhein
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Barbara Wold
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Shiwei Zheng
- Department of Genetics and Genomic Sciences and Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Guo-Cheng Yuan
- Department of Genetics and Genomic Sciences and Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Matt Thomson
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Long Cai
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA.
| | - Andrew P McMahon
- Department of Stem Cell Biology and Regenerative Medicine, Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA.
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3
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Lv L, Liu Y, Xiong J, Wang S, Li Y, Zhang B, Huang Y, Zhao J. Role of G protein coupled receptors in acute kidney injury. Cell Commun Signal 2024; 22:423. [PMID: 39223553 PMCID: PMC11367933 DOI: 10.1186/s12964-024-01802-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Accepted: 08/20/2024] [Indexed: 09/04/2024] Open
Abstract
Acute kidney injury (AKI) is a clinical condition characterized by a rapid decline in kidney function, which is associated with local inflammation and programmed cell death in the kidney. The G protein-coupled receptors (GPCRs) represent the largest family of signaling transduction proteins in the body, and approximately 40% of drugs on the market target GPCRs. The expressions of various GPCRs, prostaglandin receptors and purinergic receptors, to name a few, are significantly altered in AKI models. And the role of GPCRs in AKI is catching the eyes of researchers due to their distinctive biological functions, such as regulation of hemodynamics, metabolic reprogramming, and inflammation. Therefore, in this review, we aim to discuss the role of GPCRs in the pathogenesis of AKI and summarize the relevant clinical trials involving GPCRs to assess the potential of GPCRs and their ligands as therapeutic targets in AKI and the transition to AKI-CKD.
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Affiliation(s)
- Liangjing Lv
- Department of Nephrology, the Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University, Third Military Medical University), Chongqing, 400037, China
| | - Yong Liu
- Department of Nephrology, the Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University, Third Military Medical University), Chongqing, 400037, China
| | - Jiachuan Xiong
- Department of Nephrology, the Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University, Third Military Medical University), Chongqing, 400037, China
| | - Shaobo Wang
- Department of Nephrology, the Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University, Third Military Medical University), Chongqing, 400037, China
| | - Yan Li
- Department of Nephrology, the Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University, Third Military Medical University), Chongqing, 400037, China
| | - Bo Zhang
- Department of Nephrology, the Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University, Third Military Medical University), Chongqing, 400037, China
| | - Yinghui Huang
- Department of Nephrology, the Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University, Third Military Medical University), Chongqing, 400037, China
| | - Jinghong Zhao
- Department of Nephrology, the Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University, Third Military Medical University), Chongqing, 400037, China.
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4
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Yamamoto T, Isaka Y. Pathological mechanisms of kidney disease in ageing. Nat Rev Nephrol 2024; 20:603-615. [PMID: 39025993 DOI: 10.1038/s41581-024-00868-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2024] [Indexed: 07/20/2024]
Abstract
The kidney is a metabolically active organ that requires energy to drive processes such as tubular reabsorption and secretion, and shows a decline in function with advancing age. Various molecular mechanisms, including genomic instability, telomere attrition, inflammation, autophagy, mitochondrial function, and changes to the sirtuin and Klotho signalling pathways, are recognized regulators of individual lifespan and pivotal factors that govern kidney ageing. Thus, mechanisms that contribute to ageing not only dictate renal outcomes but also exert a substantial influence over life expectancy. Conversely, kidney dysfunction, in the context of chronic kidney disease (CKD), precipitates an expedited ageing trajectory in individuals, leading to premature ageing and a disconnect between biological and chronological age. As CKD advances, age-related manifestations such as frailty become increasingly conspicuous. Hence, the pursuit of healthy ageing necessitates not only the management of age-related complications but also a comprehensive understanding of the processes and markers that underlie systemic ageing. Here, we examine the hallmarks of ageing, focusing on the mechanisms by which they affect kidney health and contribute to premature organ ageing. We also review diagnostic methodologies and interventions for premature ageing, with special consideration given to the potential of emerging therapeutic avenues to target age-related kidney diseases.
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Affiliation(s)
- Takeshi Yamamoto
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoshitaka Isaka
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan.
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5
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Xu W, Hou L. Knockdown of nicotinamide N-methyltransferase ameliorates renal fibrosis caused by ischemia-reperfusion injury and remodels sphingosine metabolism. Clin Exp Nephrol 2024:10.1007/s10157-024-02545-z. [PMID: 39168882 DOI: 10.1007/s10157-024-02545-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 07/29/2024] [Indexed: 08/23/2024]
Abstract
BACKGROUND CKD currently affects 8.2% to 9.1% of the global population and the CKD mortality rate has increased during recent decades, making it necessary to identify new therapeutic targets. This study investigated the role of nicotinamide N-methyltransferase (NNMT) in renal fibrosis following ischemia-reperfusion injury (IRI), a key factor in chronic kidney disease (CKD) progression. METHODS We established a mouse model with a knockdown of NNMT to investigate the impact of this enzyme on renal fibrosis after unilateral IRI. We then utilized histology, immunohistochemistry, and metabolomic analyses to investigate fibrosis markers and sphingolipid metabolism in NNMT-deficient mice. We also utilized an Nnmt lentivirus interference vector or an Nnmt overexpression plasmid to transfect mouse kidney proximal tubule cells, stimulated these cells with TGF-β1, and then measured the pro-fibrotic response and the expression of the methylated and unmethylated forms of Sphk1. RESULTS The results demonstrated that reducing NNMT expression mitigated fibrosis, inflammation, and lipid deposition, potentially through the modulation of sphingolipid metabolism. Histology, immunohistochemistry, and metabolomic analyses provided evidence of decreased fibrosis and enhanced sphingolipid metabolism in NNMT-deficient mice. NNMT mediated the TGF-β1-induced pro-fibrotic response, knockdown of Nnmt decreased the level of unmethylated Sphk1 and increased the level of methylated Sphk1 in renal tubular epithelial cells. CONCLUSIONS Our findings suggest that NNMT functions in sphingolipid metabolism and has potential as a therapeutic target for CKD. Further research is needed to elucidate the mechanisms linking NNMT to sphingolipid metabolism and renal fibrosis.
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Affiliation(s)
- Wanfeng Xu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ling Hou
- Department of Pediatrics, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, China.
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Bleich E, Vonbrunn E, Büttner-Herold M, Amann K, Daniel C. Macrophage-Induced Pro-Fibrotic Gene Expression in Tubular Cells after Ischemia/Reperfusion Is Paralleled but Not Directly Mediated by C5a/C5aR1 Signaling. Life (Basel) 2024; 14:1031. [PMID: 39202772 PMCID: PMC11355820 DOI: 10.3390/life14081031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2024] [Revised: 08/14/2024] [Accepted: 08/15/2024] [Indexed: 09/03/2024] Open
Abstract
Ischemia/reperfusion (I/R) is inevitable during kidney transplantation and causes acute kidney injury (AKI), which affects immediate outcome and leads to chronic changes such as fibrotic remodeling of the graft. We investigated pro-fibrotic signaling after I/R, focusing on the complement component and receptor C5a/C5aR1 and macrophage/tubule crosstalk. Male Dark Agouti rats were subjected to I/R and their kidneys were harvested 10 min, 6 h, 24 h, 3 days, 5 days and 8 weeks after reperfusion. The development of renal fibrosis was assessed by the detection of Vimentin (VIM), α-smooth muscle actin (α-SMA) and collagen by immunohistochemistry and Sirius Red staining, respectively. The characterization of C5a/C5aR1 activity and C5aR1+ cells was performed by multiplex mRNA analysis, ELISA, immunofluorescence flow cytometry and in situ hybridization in animal models and cell culture analyses. In the cell culture experiments, we focused on macrophage/tubule cell crosstalk in co-culture experiments and mimicked in vivo conditions by hypoxia/reoxygenation and supplementation with C5a. Already 6-24 h after the induction of I/R in the rat model, C5a concentration in the plasma was significantly increased compared to the control. The matrix components VIM and α-SMA peaked on day 5 and declined after 8 weeks, when an increase in collagen was detected using Sirius Red. In contrast to early I/R-induced C5a activation, renal C5ar1 expression was maximal at day 5 and C5 expression increased until week 8, indicating that the renal upregulation of expression is not required for early complement activation. C5aR1 mRNA was detected in neutrophils and macrophages, but not in proximal tubular cells in the injured kidneys. The macrophage/tubular cell co-culture experiments showed that macrophages were mainly responsible for the increased expression of fibrosis-associated genes in tubule cells (ACTA2, VIM, SNAI1, TGFB1 and FGF-2), and hypoxia/reoxygenation had a partially enhancing effect. A direct pro-fibrotic effect of C5a was not observed. Increased TGF-ß levels were dependent on the differentiation of macrophages to the M2 subtype. In conclusion, the early activation of mesenchymal markers in tubular epithelial cells leads to long-term fibrotic remodeling characterized by VIM expression and driven by TGF-ß-dependent macrophage/tubular crosstalk. The chemoattractive properties of complement C5a may contribute to the recruitment of pro-fibrotic macrophages.
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Affiliation(s)
| | | | | | | | - Christoph Daniel
- Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-University (FAU) Erlangen-Nuremberg, 91054 Erlangen, Germany; (E.B.); (E.V.); (M.B.-H.); (K.A.)
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7
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Huang Y, He W, Zhang Y, Zou Z, Han L, Luo J, Wang Y, Tang X, Li Y, Bao Y, Huang Y, Long XD, Fu Y, He M. Targeting SIRT2 in Aging-Associated Fibrosis Pathophysiology. Aging Dis 2024:AD.202.0513. [PMID: 39226168 DOI: 10.14336/ad.202.0513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 07/05/2024] [Indexed: 09/05/2024] Open
Abstract
Aging is a complex biological process that involves multi-level structural and physiological changes. Aging is a major risk factor for many chronic diseases. The accumulation of senescent cells changes the tissue microenvironment and is closely associated with the occurrence and development of tissue and organ fibrosis. Fibrosis is the result of dysregulated tissue repair response in the development of chronic inflammatory diseases. Recent studies have clearly indicated that SIRT2 is involved in regulating the progression of fibrosis, making it a potential target for anti-fibrotic drugs. SIRT2 is a NAD+ dependent histone deacetylase, shuttling between nucleus and cytoplasm, and is highly expressed in liver, kidney and heart, playing an important role in the occurrence and development of aging and fibrosis. Therefore, we summarized the role of SIRT2 in liver, kidney and cardiac fibrosis during aging.
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Affiliation(s)
- Yongjiao Huang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Frontiers Science Center of Cellular Homeostasis and Human Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Basic Medicine, DeHong Vocational College, Dehong, Yunnan, China
- School of Basic Medicine, Kunming Medical University, Kunming, China
| | - Wei He
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Frontiers Science Center of Cellular Homeostasis and Human Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Basic Medicine, Kunming Medical University, Kunming, China
- Toxicology Department, Sichuan Center For Disease Control and Prevention, Chengdu, Sichuan, China
| | - Yingting Zhang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Frontiers Science Center of Cellular Homeostasis and Human Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhihui Zou
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Frontiers Science Center of Cellular Homeostasis and Human Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Longchuan Han
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Frontiers Science Center of Cellular Homeostasis and Human Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Luo
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Frontiers Science Center of Cellular Homeostasis and Human Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Basic Medicine, Kunming Medical University, Kunming, China
| | - Yunqiu Wang
- Department of Biomedical Sciences and Synthetic Organic Chemistry, University College London, United Kingdom
| | - Xinxin Tang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Frontiers Science Center of Cellular Homeostasis and Human Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yue Li
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Frontiers Science Center of Cellular Homeostasis and Human Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuhan Bao
- Department of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Ying Huang
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Frontiers Science Center of Cellular Homeostasis and Human Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xi-Dai Long
- Clinicopathological Diagnosis &;amp Research Center, the Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi, China
| | - Yinkun Fu
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Frontiers Science Center of Cellular Homeostasis and Human Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ming He
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Ministry of Education, Shanghai Frontiers Science Center of Cellular Homeostasis and Human Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Pathology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
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Qian L, Jin F, Li T, Wei Z, Ma X, Zheng W, Javanmardi N, Wang Z, Ma J, Lai C, Dong W, Wang T, Feng ZQ. Self-Adhesive and Self-Sustainable Bioelectronic Patch for Physiological Feedback Electronic Modulation of Soft Organs. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2406636. [PMID: 39148152 DOI: 10.1002/adma.202406636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 08/06/2024] [Indexed: 08/17/2024]
Abstract
Bionic electrical stimulation (Bio-ES) aims to achieve personalized therapy and proprioceptive adaptation by mimicking natural neural signatures of the body, while current Bio-ES devices are reliant on complex sensing and computational simulation systems, thus often limited by the low-fidelity of simulated electrical signals, and failure of interface information interaction due to the mechanical mismatch between soft tissues and rigid electrodes. Here, the study presents a flexible and ultrathin self-sustainable bioelectronic patch (Bio-patch), which can self-adhere to the lesion area of organs and generate bionic electrical signals synchronized vagal nerve envelope in situ to implement Bio-ES. It allows adaptive adjustment of intensity, frequency, and waveform of the Bio-ES to fully meet personalized needs of tissue regeneration based on real-time feedback from the vagal neural controlled organs. With this foundation, the Bio-patch can effectively intervene with excessive fibrosis and microvascular stasis during the natural healing process by regulating the polarization time of macrophages, promoting the reconstruction of the tissue-engineered structure, and accelerating the repair of damaged liver and kidney. This work develops a practical approach to realize biomimetic electronic modulation of the growth and development of soft organs only using a multifunctional Bio-patch, which establishes a new paradigm for precise bioelectronic medicine.
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Affiliation(s)
- Lili Qian
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Fei Jin
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Tong Li
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Zhidong Wei
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Xiying Ma
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Weiying Zheng
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Negar Javanmardi
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Zheng Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Juan Ma
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Chengteng Lai
- Department of Orthopaedics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, 210002, China
| | - Wei Dong
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Ting Wang
- State Key Laboratory of Digital Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Zhang-Qi Feng
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
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9
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Wang X, Xie X, Ni JY, Li JY, Sun XA, Xie HY, Yang NH, Guo HJ, Lu L, Ning M, Zhou L, Liu J, Xu C, Zhang W, Wen Y, Shen Q, Xu H, Lu LM. USP11 promotes renal tubular cell pyroptosis and fibrosis in UUO mice via inhibiting KLF4 ubiquitin degradation. Acta Pharmacol Sin 2024:10.1038/s41401-024-01363-z. [PMID: 39147900 DOI: 10.1038/s41401-024-01363-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 07/18/2024] [Indexed: 08/17/2024] Open
Abstract
The pyroptosis of renal tubular epithelial cells leads to tubular loss and inflammation and then promotes renal fibrosis. The transcription factor Krüppel-like factor 4 (KLF4) can bidirectionally regulate the transcription of target genes. Our previous study revealed that sustained elevation of KLF4 is responsible for the transition of acute kidney injury (AKI) into chronic kidney disease (CKD) and renal fibrosis. In this study, we explored the upstream mechanisms of renal tubular epithelial cell pyroptosis from the perspective of posttranslational regulation and focused on the transcription factor KLF4. Mice were subjected to unilateral ureteral obstruction (UUO) surgery and euthanized on D7 or D14 for renal tissue harvesting. We showed that the pyroptosis of renal tubular epithelial cells mediated by both the Caspase-1/GSDMD and Caspase-3/GSDME pathways was time-dependently increased in UUO mouse kidneys. Furthermore, we found that the expression of the transcription factor KLF4 was also upregulated in a time-dependent manner in UUO mouse kidneys. Tubular epithelial cell-specific Klf4 knockout alleviated UUO-induced pyroptosis and renal fibrosis. In Ang II-treated mouse renal proximal tubular epithelial cells (MTECs), we demonstrated that KLF4 bound to the promoter regions of Caspase-3 and Caspase-1 and directly increased their transcription. In addition, we found that ubiquitin-specific protease 11 (USP11) was increased in UUO mouse kidneys. USP11 deubiquitinated KLF4. Knockout of Usp11 or pretreatment with the USP11 inhibitor mitoxantrone (3 mg/kg, i.p., twice a week for two weeks before UUO surgery) significantly alleviated the increases in KLF4 expression, pyroptosis and renal fibrosis. These results demonstrated that the increased expression of USP11 in renal tubular cells prevents the ubiquitin degradation of KLF4 and that elevated KLF4 promotes inflammation and renal fibrosis by initiating tubular cell pyroptosis.
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Affiliation(s)
- Xin Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, 201103, China
| | - Xin Xie
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Jia-Yun Ni
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Jing-Yao Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Xi-Ang Sun
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Hong-Yan Xie
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Ning-Hao Yang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Heng-Jiang Guo
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Li Lu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Ming Ning
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Li Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Jun Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Chen Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Wei Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Yi Wen
- Department of Nephrology, Zhongda Hospital, Southeast University School of Medicine, Nanjing, 210044, China
| | - Qian Shen
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, 201103, China
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Hong Xu
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, 201103, China.
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Children's Hospital of Fudan University, Shanghai, 201102, China.
| | - Li-Min Lu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China.
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai, 201103, China.
- Shanghai Kidney Development and Pediatric Kidney Disease Research Center, Children's Hospital of Fudan University, Shanghai, 201102, China.
- National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China.
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10
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Blanco-Gozalo V, Quiros Y, Vicente-Vicente L, Casanova AG, Sancho-Martínez SM, López-Hernández FJ. Urinary GM2AP coincides with renal cortical damage and grades cisplatin nephrotoxicity severity in rats. Toxicology 2024; 508:153919. [PMID: 39137829 DOI: 10.1016/j.tox.2024.153919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 08/02/2024] [Accepted: 08/09/2024] [Indexed: 08/15/2024]
Abstract
Nephrotoxicity, including electrolytic disorders and acute kidney injury (AKI), limits the clinical dosage and utility of platinated antineoplastics such as cisplatin. Cisplatin nephrotoxicity embodies a tubulopathy involving the medullary S2 and S3 segments of the proximal and the distal tubules. Higher dosage extends damage over the cortical S1 segment and intensifies overall injury. However, the standard diagnosis based on plasma creatinine as well as novel injury biomarkers lacks enough pathophysiological specificity. Further granularity in the detection of renal injury would help understand the implications of individual damage patterns needed for personalized patient handling. In this article, we studied the association of urinary ganglioside GM2 activator protein (GM2AP) with the patterns of tubular damage produced by 5 and 10 mg/kg cisplatin in rats. Our results show that GM2AP appears in the urine only following damage to the cortical segment of the proximal tubule. The information provided by GM2AP is not redundant with but distinct and complementary to that provided by urinary neutrophil gelatinase-associated lipocalin (NGAL). Similarly, treatment with 150 mg/kg/day gentamicin damages the renal cortex and increases GM2AP urinary excretion; whereas renal ischemia, which does not affect the cortex, has no effect on GM2AP. Because of the key role of the cortical proximal tubule in renal function, we contend GM2AP as a potential diagnostic biomarker to stratify AKI patients according to the underlying damage and follow their evolution and prognosis. Prospectively, urinary GM2AP may help grade the severity of platinated antineoplastic nephrotoxicity by forming part of a non-invasive liquid biopsy.
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Affiliation(s)
- Víctor Blanco-Gozalo
- Instituto de Investigación Biomédica de Salamanca (IBSAL) de la Fundación Instituto de Ciencias de la Salud de Castilla y León (ICSCYL), Salamanca, Spain; Universidad de Salamanca (USAL), Departamento de Fisiología y Farmacología, Salamanca, Spain; Group of Translational Research on Renal and Cardiovascular Diseases (TRECARD), Salamanca, Spain
| | - Yaremi Quiros
- Instituto de Investigación Biomédica de Salamanca (IBSAL) de la Fundación Instituto de Ciencias de la Salud de Castilla y León (ICSCYL), Salamanca, Spain; Universidad de Salamanca (USAL), Departamento de Fisiología y Farmacología, Salamanca, Spain; Group of Translational Research on Renal and Cardiovascular Diseases (TRECARD), Salamanca, Spain
| | - Laura Vicente-Vicente
- Instituto de Investigación Biomédica de Salamanca (IBSAL) de la Fundación Instituto de Ciencias de la Salud de Castilla y León (ICSCYL), Salamanca, Spain; Universidad de Salamanca (USAL), Departamento de Fisiología y Farmacología, Salamanca, Spain; Group of Translational Research on Renal and Cardiovascular Diseases (TRECARD), Salamanca, Spain; National Network for Kidney Research REDINREN, RD016/0009/0025, Instituto de Salud Carlos III, Madrid, Spain
| | - Alfredo G Casanova
- Instituto de Investigación Biomédica de Salamanca (IBSAL) de la Fundación Instituto de Ciencias de la Salud de Castilla y León (ICSCYL), Salamanca, Spain; Universidad de Salamanca (USAL), Departamento de Fisiología y Farmacología, Salamanca, Spain; Group of Translational Research on Renal and Cardiovascular Diseases (TRECARD), Salamanca, Spain; National Network for Kidney Research REDINREN, RD016/0009/0025, Instituto de Salud Carlos III, Madrid, Spain
| | - Sandra M Sancho-Martínez
- Instituto de Investigación Biomédica de Salamanca (IBSAL) de la Fundación Instituto de Ciencias de la Salud de Castilla y León (ICSCYL), Salamanca, Spain; Universidad de Salamanca (USAL), Departamento de Fisiología y Farmacología, Salamanca, Spain; Group of Translational Research on Renal and Cardiovascular Diseases (TRECARD), Salamanca, Spain; National Network for Kidney Research REDINREN, RD016/0009/0025, Instituto de Salud Carlos III, Madrid, Spain
| | - Francisco J López-Hernández
- Instituto de Investigación Biomédica de Salamanca (IBSAL) de la Fundación Instituto de Ciencias de la Salud de Castilla y León (ICSCYL), Salamanca, Spain; Universidad de Salamanca (USAL), Departamento de Fisiología y Farmacología, Salamanca, Spain; Group of Translational Research on Renal and Cardiovascular Diseases (TRECARD), Salamanca, Spain; National Network for Kidney Research REDINREN, RD016/0009/0025, Instituto de Salud Carlos III, Madrid, Spain; Group of Biomedical Research on Critical Care (BioCritic), Valladolid, Spain.
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11
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Pan W, Zhang W, Zheng B, Camellato BR, Stern J, Lin Z, Khodadadi-Jamayran A, Kim J, Sommer P, Khalil K, Weldon E, Bai J, Zhu Y, Meyn P, Heguy A, Mangiola M, Griesemer A, Keating BJ, Montgomery RA, Xia B, Boeke JD. Cellular dynamics in pig-to-human kidney xenotransplantation. MED 2024; 5:1016-1029.e4. [PMID: 38776915 DOI: 10.1016/j.medj.2024.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 01/30/2024] [Accepted: 05/06/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND Xenotransplantation of genetically engineered porcine organs has the potential to address the challenge of organ donor shortage. Two cases of porcine-to-human kidney xenotransplantation were performed, yet the physiological effects on the xenografts and the recipients' immune responses remain largely uncharacterized. METHODS We performed single-cell RNA sequencing (scRNA-seq) and longitudinal RNA-seq analyses of the porcine kidneys to dissect xenotransplantation-associated cellular dynamics and xenograft-recipient interactions. We additionally performed longitudinal scRNA-seq of the peripheral blood mononuclear cells (PBMCs) to detect recipient immune responses across time. FINDINGS Although no hyperacute rejection signals were detected, scRNA-seq analyses of the xenografts found evidence of endothelial cell and immune response activation, indicating early signs of antibody-mediated rejection. Tracing the cells' species origin, we found human immune cell infiltration in both xenografts. Human transcripts in the longitudinal bulk RNA-seq revealed that human immune cell infiltration and the activation of interferon-gamma-induced chemokine expression occurred by 12 and 48 h post-xenotransplantation, respectively. Concordantly, longitudinal scRNA-seq of PBMCs also revealed two phases of the recipients' immune responses at 12 and 48-53 h. Lastly, we observed global expression signatures of xenotransplantation-associated kidney tissue damage in the xenografts. Surprisingly, we detected a rapid increase of proliferative cells in both xenografts, indicating the activation of the porcine tissue repair program. CONCLUSIONS Longitudinal and single-cell transcriptomic analyses of porcine kidneys and the recipient's PBMCs revealed time-resolved cellular dynamics of xenograft-recipient interactions during xenotransplantation. These cues can be leveraged for designing gene edits and immunosuppression regimens to optimize xenotransplantation outcomes. FUNDING This work was supported by NIH RM1HG009491 and DP5OD033430.
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Affiliation(s)
- Wanqing Pan
- Gene Regulation Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of Southern California Keck School of Medicine, Los Angeles, CA 90033, USA
| | - Weimin Zhang
- Institute for Systems Genetics, NYU Langone Health, New York, NY 10016, USA; Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Binghan Zheng
- Gene Regulation Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Brendan R Camellato
- Institute for Systems Genetics, NYU Langone Health, New York, NY 10016, USA; Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Jeffrey Stern
- NYU Langone Transplant Institute, NYU Langone Health, New York, NY 10016, USA; Department of Surgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Ziyan Lin
- Applied Bioinformatics Laboratories (ABL), NYU Grossman School of Medicine, New York, NY 10016, USA
| | | | - Jacqueline Kim
- NYU Langone Transplant Institute, NYU Langone Health, New York, NY 10016, USA; Department of Surgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Philip Sommer
- Department of Anesthesiology, Perioperative Care & Pain Medicine, NYU Langone Health, New York, NY 10016, USA
| | - Karen Khalil
- NYU Langone Transplant Institute, NYU Langone Health, New York, NY 10016, USA
| | - Elaina Weldon
- NYU Langone Transplant Institute, NYU Langone Health, New York, NY 10016, USA; Department of Surgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Jiangshan Bai
- Gene Regulation Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Yinan Zhu
- Institute for Systems Genetics, NYU Langone Health, New York, NY 10016, USA; Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Peter Meyn
- Genome Technology Center, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Adriana Heguy
- Genome Technology Center, NYU Grossman School of Medicine, New York, NY 10016, USA; Department of Pathology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Massimo Mangiola
- NYU Langone Transplant Institute, NYU Langone Health, New York, NY 10016, USA
| | - Adam Griesemer
- NYU Langone Transplant Institute, NYU Langone Health, New York, NY 10016, USA; Department of Surgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Brendan J Keating
- Institute for Systems Genetics, NYU Langone Health, New York, NY 10016, USA; NYU Langone Transplant Institute, NYU Langone Health, New York, NY 10016, USA; Department of Surgery, NYU Grossman School of Medicine, New York, NY 10016, USA; Penn Transplant Institute, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - Robert A Montgomery
- NYU Langone Transplant Institute, NYU Langone Health, New York, NY 10016, USA; Department of Surgery, NYU Grossman School of Medicine, New York, NY 10016, USA.
| | - Bo Xia
- Gene Regulation Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Institute for Systems Genetics, NYU Langone Health, New York, NY 10016, USA; Society of Fellows, Harvard University, Cambridge, MA 02138, USA.
| | - Jef D Boeke
- Institute for Systems Genetics, NYU Langone Health, New York, NY 10016, USA; Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY 10016, USA.
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12
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Bischoff E, Kirilov N. Leveraging Electronic Health Records to Predict the Risk of Acute Kidney Injury after Allogeneic Hematopoietic Cell Transplantation. Life (Basel) 2024; 14:987. [PMID: 39202729 PMCID: PMC11355793 DOI: 10.3390/life14080987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2024] [Revised: 08/03/2024] [Accepted: 08/06/2024] [Indexed: 09/03/2024] Open
Abstract
BACKGROUND The objective of this study is to assess the electronic health records (EHRs), which are potential risk factors for acute kidney injury (AKI) after allogenic hematopoietic cell transplantation (allo-HCT), and to propose a basic dataset and score for the calculation of HCT-acute kidney injury risk (HCT-AKIR). METHODS We undertook a retrospective analysis of the EHRs of 312 patients. Pre- and post-transplant factors were assessed, recognizing the following structured entries: laboratory data, encounters, medication, imaging studies, diagnoses, and procedures. Composite variables were used to create patient groups by combining two or more multivariate significant risk factors for AKI. The EHRs dataset and HCT-AKIR score were created based on the multivariate analysis of the composite variables. RESULTS A multivariate analysis showed that previous CKD and once-impaired pre-transplant kidney function, sepsis, imaging procedures with contrast media, and cumulative length of intensive care unit stay after transplantation were significant risk factors. A new unit-weighted composite score based on the combination of significant risk factors contained in common EHR resources was proposed. CONCLUSIONS Using our novel HCT-AKIR score calculated from the basic EHR dataset could be an easy way to increase awareness of post-transplant AKI and provide risk stratification.
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Affiliation(s)
- Elena Bischoff
- Faculty of Global Health and Health Care, University “Prof Dr Assen Zlatarov”, 8010 Burgas, Bulgaria
| | - Nikola Kirilov
- Institute of Medical Informatics, Heidelberg University Hospital, 69120 Heidelberg, Germany;
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13
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Yoshikawa T, Yanagita M. Single-Cell Analysis Provides New Insights into the Roles of Tertiary Lymphoid Structures and Immune Cell Infiltration in Kidney Injury and Chronic Kidney Disease. THE AMERICAN JOURNAL OF PATHOLOGY 2024:S0002-9440(24)00275-X. [PMID: 39097168 DOI: 10.1016/j.ajpath.2024.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 06/27/2024] [Accepted: 07/02/2024] [Indexed: 08/05/2024]
Abstract
Chronic kidney disease (CKD) is a global health concern with high morbidity and mortality. Acute kidney injury (AKI) is a pivotal risk factor for the progression of CKD, and the rate of AKI-to-CKD progression increases with aging. Intrarenal inflammation is a fundamental mechanism underlying AKI-to-CKD progression. Tertiary lymphoid structures (TLSs), ectopic lymphoid aggregates formed in nonlymphoid organs, develop in aged injured kidneys, but not in young kidneys, with prolonged inflammation and maladaptive repair, which potentially exacerbates AKI-to-CKD progression in aged individuals. Dysregulated immune responses are involved in the pathogenesis of various kidney diseases, such as IgA nephropathy, lupus nephritis, and diabetic kidney diseases, thereby deteriorating kidney function. TLSs also develop in several kidney diseases, including transplanted kidneys and renal cell carcinoma. However, the precise immunologic mechanisms driving AKI-to-CKD progression and development of these kidney diseases remain unclear, which hinders the development of novel therapeutic approaches. This review aims to describe recent findings from single-cell analysis of cellular heterogeneity and complex interactions among immune and renal parenchymal cells, which potentially contribute to the pathogenesis of AKI-to-CKD progression and other kidney diseases, highlighting the mechanisms of formation and pathogenic roles of TLSs in aged injured kidneys.
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Affiliation(s)
- Takahisa Yoshikawa
- Department of Nephrology, Graduate School of Medicine, Kyoto, Japan; Department of Urology, Graduate School of Medicine, Kyoto, Japan; Department of Diagnostic Pathology, Graduate School of Medicine, Kyoto, Japan
| | - Motoko Yanagita
- Department of Nephrology, Graduate School of Medicine, Kyoto, Japan; Department of Urology, Graduate School of Medicine, Kyoto, Japan; Department of Diagnostic Pathology, Graduate School of Medicine, Kyoto, Japan; Institute for the Advanced Study of Human Biology, Kyoto University, Kyoto, Japan.
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14
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Perez-Moreno E, Toledo T, Campusano P, Zuñiga S, Azócar L, Feuerhake T, Méndez GP, Labarca M, Pérez-Molina F, de la Peña A, Herrera-Cid C, Ehrenfeld P, Godoy AS, González A, Soza A. Galectin-8 counteracts folic acid-induced acute kidney injury and prevents its transition to fibrosis. Biomed Pharmacother 2024; 177:116923. [PMID: 38936192 DOI: 10.1016/j.biopha.2024.116923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 06/03/2024] [Accepted: 06/09/2024] [Indexed: 06/29/2024] Open
Abstract
Acute kidney injury (AKI), characterized by a sudden decline in kidney function involving tubular damage and epithelial cell death, can lead to progressive tissue fibrosis and chronic kidney disease due to interstitial fibroblast activation and tissue repair failures that lack direct treatments. After an AKI episode, surviving renal tubular cells undergo cycles of dedifferentiation, proliferation and redifferentiation while fibroblast activity increases and then declines to avoid an exaggerated extracellular matrix deposition. Appropriate tissue recovery versus pathogenic fibrotic progression depends on fine-tuning all these processes. Identifying endogenous factors able to affect any of them may offer new therapeutic opportunities to improve AKI outcomes. Galectin-8 (Gal-8) is an endogenous carbohydrate-binding protein that is secreted through an unconventional mechanism, binds to glycosylated proteins at the cell surface and modifies various cellular activities, including cell proliferation and survival against stress conditions. Here, using a mouse model of AKI induced by folic acid, we show that pre-treatment with Gal-8 protects against cell death, promotes epithelial cell redifferentiation and improves renal function. In addition, Gal-8 decreases fibroblast activation, resulting in less expression of fibrotic genes. Gal-8 added after AKI induction is also effective in maintaining renal function against damage, improving epithelial cell survival. The ability to protect kidneys from injury during both pre- and post-treatments, coupled with its anti-fibrotic effect, highlights Gal-8 as an endogenous factor to be considered in therapeutic strategies aimed at improving renal function and mitigating chronic pathogenic progression.
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Affiliation(s)
- Elisa Perez-Moreno
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile; Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia & Vida, Santiago, Chile
| | - Tomás Toledo
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Pascale Campusano
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Sebastián Zuñiga
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Lorena Azócar
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Teo Feuerhake
- Department of Pathology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Mariana Labarca
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Francisca Pérez-Molina
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile; Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia & Vida, Santiago, Chile
| | - Adely de la Peña
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile; Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia & Vida, Santiago, Chile
| | - Cristian Herrera-Cid
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Pamela Ehrenfeld
- Instituto de Anatomía, Histología y Patología, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
| | - Alejandro S Godoy
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Alfonso González
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile; Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia & Vida, Santiago, Chile
| | - Andrea Soza
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile; Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia & Vida, Santiago, Chile.
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15
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Chen Z, Chen C, Lai K, Wu C, Wu F, Chen Z, Ye K, Xie J, Ma H, Chen H, Wang Y, Xu Y. GSDMD and GSDME synergy in the transition of acute kidney injury to chronic kidney disease. Nephrol Dial Transplant 2024; 39:1344-1359. [PMID: 38244230 DOI: 10.1093/ndt/gfae014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Indexed: 01/22/2024] Open
Abstract
BACKGROUND AND HYPOTHESIS Acute kidney injury (AKI) could progress to chronic kidney disease (CKD) and the AKI-CKD transition has major clinical significance. A growing body of evidence has unveiled the role of pyroptosis in kidney injury. We postulate that GSDMD and GSDME exert cumulative effects on the AKI-CKD transition by modulating different cellular responses. METHODS We established an AKI-CKD transition model induced by folic acid in wildtype (WT), Gsdmd-/-, Gsdme-/-, and Gsdmd-/-Gsdme-/- mice. Tubular injury, renal fibrosis and inflammatory responses were evaluated. In vitro studies were conducted to investigate the interplay among tubular cells, neutrophils, and macrophages. RESULTS Double deletion of Gsdmd and Gsdme conferred heightened protection against AKI, mitigating inflammatory responses, including the formation of neutrophil extracellular traps (NETs), macrophage polarization and differentiation, and ultimately renal fibrosis, compared with wildtype mice and mice with single deletion of either Gsdmd or Gsdme. Gsdme, but not Gsdmd deficiency, shielded tubular cells from pyroptosis. GSDME-dependent tubular cell death stimulated NETs formation and prompted macrophage polarization towards a pro-inflammatory phenotype. Gsdmd deficiency suppressed NETs formation and subsequently hindered NETs-induced macrophage-to-myofibroblast transition (MMT). CONCLUSION GSDMD and GSDME collaborate to contribute to AKI and subsequent renal fibrosis induced by folic acid. Synchronous inhibition of GSDMD and GSDME could be an innovative therapeutic strategy for mitigating the AKI-CKD transition.
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Affiliation(s)
- Zhengyue Chen
- Department of Nephrology, Blood Purification Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Caiming Chen
- Department of Nephrology, Blood Purification Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Research Center for Metabolic Chronic Kidney Disease, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Nephrology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Kunmei Lai
- Department of Nephrology, Blood Purification Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Chengkun Wu
- School of Medicine, Nankai University, Tianjin, China
| | - Fan Wu
- Department of Nephrology, Blood Purification Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Zhimin Chen
- Department of Nephrology, Blood Purification Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Keng Ye
- Department of Nephrology, Blood Purification Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Jingzhi Xie
- Department of Nephrology, Blood Purification Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Huabin Ma
- Central Laboratory, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Hong Chen
- Department of Pathology, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Yujia Wang
- Department of Nephrology, Blood Purification Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Research Center for Metabolic Chronic Kidney Disease, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Nephrology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Yanfang Xu
- Department of Nephrology, Blood Purification Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Research Center for Metabolic Chronic Kidney Disease, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Nephrology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
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16
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Liu X, Zhan P, Zhang Y, Jin H, Wang Y, Yang Y, Wang Z, Wang X, Xu Q, Zhen J, Sun R, Sun J, Liu M, Yi F. Lysosomal-Associated Protein Transmembrane 5, Tubular Senescence, and Progression of CKD. J Am Soc Nephrol 2024:00001751-990000000-00378. [PMID: 39078711 DOI: 10.1681/asn.0000000000000446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 07/22/2024] [Indexed: 08/28/2024] Open
Abstract
Key Points
Lysosomal-associated protein transmembrane 5 (LAPTM5) is increased in tubular epithelial cells in CKD.Conditional knockout of Laptm5 in tubules attenuates kidney fibrosis in mice with CKD.LAPTM5 contributes to tubular senescence by inhibiting WWP2-mediated ubiquitination of notch1 intracellular domain.
Background
Tubular senescence is a major determinant of CKD, and identification of potential therapeutic targets involved in senescent tubular epithelial cells has clinical importance. Lysosomal-associated protein transmembrane 5 (LAPTM5) is a key molecule related to T- and B-cell receptor expression and inflammation. However, the expression pattern of LAPTM5 in the kidney and the contribution of LAPTM5 to the development of CKD are unknown.
Methods
Laptm5
−/−
mice and tubule specific–Laptm5 knockout mice were used to examine the role of LAPTM5 in tubular senescence by establishing different experimental mouse CKD models.
Results
LAPTM5 expression was significantly induced in the kidney, especially in proximal tubules and distal convoluted tubules, from mice with aristolochic acid nephropathy, bilateral ischemia/reperfusion injury–induced CKD, or unilateral ureter obstruction. Tubule-specific deletion of Laptm5 inhibited senescence of tubular epithelial cells and alleviated tubulointerstitial fibrosis in aged mice. Moreover, Laptm5 deficiency ameliorated kidney injury and tubular senescence in mice with CKD. Mechanistically, LAPTM5 inhibited ubiquitination of notch1 intracellular domain by mediating WWP2 lysosomal degradation and then leading to cellular senescence in tubular epithelial cells. We also observed a higher expression of LAPTM5 in tubules from patients with CKD, and the level of LAPTM5 was correlated with kidney fibrosis and tubular senescence in people with CKD.
Conclusions
LAPTM5 contributed to tubular senescence by regulating the WWP2/notch1 intracellular domain signaling pathway and exacerbated kidney injury during the progression of CKD.
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Affiliation(s)
- Xiaohan Liu
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Ping Zhan
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Yang Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Huiying Jin
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Youzhao Wang
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Yujie Yang
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Ziying Wang
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Xiaojie Wang
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Qianqian Xu
- Department of Organ Transplantation, Qilu Hospital of Shandong University, Jinan, China
| | - Junhui Zhen
- Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Rong Sun
- The Second Hospital of Shandong University, Jinan, China
| | - Jinpeng Sun
- Key Laboratory Experimental Teratology of the Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Min Liu
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Fan Yi
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, China
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan, China
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17
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Fan Y, Xu Y, Huo Z, Zhang H, Peng L, Jiang X, Thomson AW, Dai H. Role of triggering receptor expressed on myeloid cells-1 in kidney diseases: A biomarker and potential therapeutic target. Chin Med J (Engl) 2024; 137:1663-1673. [PMID: 38809056 PMCID: PMC11268828 DOI: 10.1097/cm9.0000000000003197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Indexed: 05/30/2024] Open
Abstract
ABSTRACT Triggering receptor expressed on myeloid cells-1 (TREM-1) is a member of the immunoglobulin superfamily. As an amplifier of the inflammatory response, TREM-1 is mainly involved in the production of inflammatory mediators and the regulation of cell survival. TREM-1 has been studied in infectious diseases and more recently in non-infectious disorders. More and more studies have shown that TREM-1 plays an important pathogenic role in kidney diseases. There is evidence that TREM-1 can not only be used as a biomarker for diagnosis of disease but also as a potential therapeutic target to guide the development of novel therapeutic agents for kidney disease. This review summarized molecular biology of TREM-1 and its signaling pathways as well as immune response in the progress of acute kidney injury, renal fibrosis, diabetic nephropathy, immune nephropathy, and renal cell carcinoma.
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Affiliation(s)
- Yuxi Fan
- Department of Immunology, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, China
- Department of Kidney Transplantation, Center of Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Ye Xu
- Department of Kidney Transplantation, Center of Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
- Medical College of Guangxi University, Nanning, Guangxi 530004, China
| | - Zhi Huo
- Department of Immunology, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, China
| | - Hedong Zhang
- Department of Kidney Transplantation, Center of Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Longkai Peng
- Department of Kidney Transplantation, Center of Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Xin Jiang
- Department of Organ Transplantation, The Fifth Clinical Medical College of Henan University of Chinese Medicine (Zhengzhou People’s Hospital), Zhengzhou, Henan 450000, China
| | - Angus W. Thomson
- Department of Surgery, Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Helong Dai
- Department of Kidney Transplantation, Center of Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
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18
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Fonseca EG, Araújo-Ferreira AP, Berger M, Castro Coimbra-Campos LM, Silva Filha R, de Souza Cordeiro LM, Campos MR, Oliveira LBF, Caliari MV, Leite Diniz LR, Alves F, Martins AS, Peruchetti DB, Ribeiro Vieira MA. Preconditioning by Moderate-Intensity Exercise Prevents Gentamicin-Induced Acute Kidney Injury. Int J Sports Med 2024. [PMID: 39029513 DOI: 10.1055/a-2342-2154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2024]
Abstract
A strict correlation among proximal tubule epithelial cell dysfunction, proteinuria, and modulation of the Renin-Angiotensin System and Kalikrein-Kinin System are crucial factors in the pathogenesis of Acute Kidney Injury (AKI). In this study, we investigated the potential protective effect of preconditioning by moderate-intensity aerobic exercise on gentamicin-induced AKI. Male Wistar rats were submitted to a moderate-intensity treadmill exercise protocol for 8 weeks, and then injected with 80 mg/kg/day s.c. gentamicin for 5 consecutive days. Four groups were generated: 1) NT+SAL (control); 2) NT+AKI (non-trained with AKI); 3) T+SAL (trained); and 4) T+AKI (trained with AKI). The NT+AKI group presented: 1) impairment in glomerular function parameters; 2) increased fractional excretion of Na + , K + , and water; 4) proteinuria and increased urinary γ-glutamyl transferase activity (a marker of tubular injury) accompanied by acute tubular necrosis; 5) an increased renal angiotensin-converting enzyme and bradykinin B1 receptor mRNA expression. Interestingly, the preconditioning by moderate-intensity aerobic exercise attenuated all alterations observed in gentamicin-induced AKI (T+AKI group). Taken together, our results show that the preconditioning by moderate-intensity aerobic exercise ameliorates the development of gentamicin-induced AKI. Our findings help to expand the current knowledge regarding the effect of physical exercise on kidneys during physiological and pathological conditions.
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Affiliation(s)
- Esdras Guedes Fonseca
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Markus Berger
- Hospital das Clinicas, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Roberta Silva Filha
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Mariana Rodrigues Campos
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | | | | | - Fabiana Alves
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Almir Souza Martins
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Diogo Barros Peruchetti
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
- INCT-NanoBiofar, Belo Horizonte, Brazil
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19
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Yin Q, Tang TT, Lu XY, Ni WJ, Yin D, Zhang YL, Jiang W, Zhang Y, Li ZL, Wen Y, Gan WH, Zhang AQ, Lv LL, Wang B, Liu BC. Macrophage-derived exosomes promote telomere fragility and senescence in tubular epithelial cells by delivering miR-155. Cell Commun Signal 2024; 22:357. [PMID: 38987851 PMCID: PMC11238407 DOI: 10.1186/s12964-024-01708-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 06/08/2024] [Indexed: 07/12/2024] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is highly prevalent worldwide, and its global burden is substantial and growing. CKD displays a number of features of accelerated senescence. Tubular cell senescence is a common biological process that contributes to CKD progression. Tubulointerstitial inflammation is a driver of tubular cell senescence and a common characteristic of CKD. However, the mechanism by which the interstitial inflammation drives tubular cell senescence remains unclear. This paper aims to explore the role of exosomal miRNAs derived from macrophages in the development of tubular cell senescence. METHODS Among the identified inflammation-related miRNAs, miR-155 is considered to be one of the most important miRNAs involved in the inflammatory response. Macrophages, the primary immune cells that mediate inflammatory processes, contain a high abundance of miR-155 in their released exosomes. We assessed the potential role of miR-155 in tubular cell senescence and renal fibrosis. We subjected miR-155-/- mice and wild-type controls, as well as tubular epithelial cells (TECs), to angiotensin II (AngII)-induced kidney injury. We assessed kidney function and injury using standard techniques. TECs were evaluated for cell senescence and telomere dysfunction in vivo and in vitro. Telomeres were measured by the fluorescence in situ hybridization. RESULTS Compared with normal controls, miR-155 was up-regulated in proximal renal tubule cells in CKD patients and mouse models of CKD. Moreover, the expression of miR-155 was positively correlated with the extent of renal fibrosis, eGFR decline and p16INK4A expression. The overexpression of miR-155 exacerbated tubular senescence, evidenced by increased detection of p16INK4A/p21expression and senescence-associated β-galactosidase activity. Notably, miR-155 knockout attenuates renal fibrosis and tubule cell senescence in vivo. Interestingly, once released, macrophages-derived exosomal miR-155 was internalized by TECs, leading to telomere shortening and dysfunction through targeting TRF1. A dual-luciferase reporter assay confirmed that TRF1 was the direct target of miR-155. Thus, our study clearly demonstrates that exosomal miR-155 may mediate communication between macrophages and TECs, subsequently inducing telomere dysfunction and senescence in TECs. CONCLUSIONS Our work suggests a new mechanism by which macrophage exosomes are involved in the development of tubule senescence and renal fibrosis, in part by delivering miR-155 to target TRF1 to promote telomere dysfunction. Our study may provide novel strategies for the treatment of AngII-induced kidney injury.
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Affiliation(s)
- Qing Yin
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87, Dingjiaqiao Road, Nanjing, Jiangsu, China
| | - Tao-Tao Tang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87, Dingjiaqiao Road, Nanjing, Jiangsu, China
| | - Xiao-Yu Lu
- Department of Pediatric Nephrology, Affiliated Maternity and Child Health Care Hospital of Nantong University, Nantong, Jiangsu, China
| | - Wei-Jie Ni
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87, Dingjiaqiao Road, Nanjing, Jiangsu, China
| | - Di Yin
- Department of Nephrology, Taixing People's Hospital, Taixing, Jiangsu, China
| | - Yi-Lin Zhang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87, Dingjiaqiao Road, Nanjing, Jiangsu, China
| | - Wei Jiang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87, Dingjiaqiao Road, Nanjing, Jiangsu, China
| | - Yue Zhang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87, Dingjiaqiao Road, Nanjing, Jiangsu, China
| | - Zuo-Lin Li
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87, Dingjiaqiao Road, Nanjing, Jiangsu, China
| | - Yi Wen
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87, Dingjiaqiao Road, Nanjing, Jiangsu, China
| | - Wei-Hua Gan
- Department of Pediatric Nephrology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ai-Qing Zhang
- Department of Pediatric Nephrology, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Lin-Li Lv
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87, Dingjiaqiao Road, Nanjing, Jiangsu, China
| | - Bin Wang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87, Dingjiaqiao Road, Nanjing, Jiangsu, China.
| | - Bi-Cheng Liu
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87, Dingjiaqiao Road, Nanjing, Jiangsu, China.
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20
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Nadim MK, Kellum JA, Forni L, Francoz C, Asrani SK, Ostermann M, Allegretti AS, Neyra JA, Olson JC, Piano S, VanWagner LB, Verna EC, Akcan-Arikan A, Angeli P, Belcher JM, Biggins SW, Deep A, Garcia-Tsao G, Genyk YS, Gines P, Kamath PS, Kane-Gill SL, Kaushik M, Lumlertgul N, Macedo E, Maiwall R, Marciano S, Pichler RH, Ronco C, Tandon P, Velez JCQ, Mehta RL, Durand F. Acute kidney injury in patients with cirrhosis: Acute Disease Quality Initiative (ADQI) and International Club of Ascites (ICA) joint multidisciplinary consensus meeting. J Hepatol 2024; 81:163-183. [PMID: 38527522 PMCID: PMC11193657 DOI: 10.1016/j.jhep.2024.03.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/28/2024] [Accepted: 03/07/2024] [Indexed: 03/27/2024]
Abstract
Patients with cirrhosis are prone to developing acute kidney injury (AKI), a complication associated with a markedly increased in-hospital morbidity and mortality, along with a risk of progression to chronic kidney disease. Whereas patients with cirrhosis are at increased risk of developing any phenotype of AKI, hepatorenal syndrome (HRS), a specific form of AKI (HRS-AKI) in patients with advanced cirrhosis and ascites, carries an especially high mortality risk. Early recognition of HRS-AKI is crucial since administration of splanchnic vasoconstrictors may reverse the AKI and serve as a bridge to liver transplantation, the only curative option. In 2023, a joint meeting of the International Club of Ascites (ICA) and the Acute Disease Quality Initiative (ADQI) was convened to develop new diagnostic criteria for HRS-AKI, to provide graded recommendations for the work-up, management and post-discharge follow-up of patients with cirrhosis and AKI, and to highlight priorities for further research.
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Affiliation(s)
- Mitra K Nadim
- Division of Nephrology and Hypertension, Keck School of Medicine, University of Southern California, Los Angeles, USA
| | - John A Kellum
- Center for Critical Care Nephrology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Lui Forni
- School of Medicine, University of Surrey and Critical Care Unit, Royal Surrey Hospital Guildford UK
| | - Claire Francoz
- Hepatology & Liver Intensive Care, Hospital Beaujon, Clichy, Paris, France
| | | | - Marlies Ostermann
- King's College London, Guy's & St Thomas' Hospital, Department of Critical Care, London, UK
| | - Andrew S Allegretti
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Javier A Neyra
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Jody C Olson
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA
| | - Salvatore Piano
- Unit of Internal Medicine and Hepatology, Department of Medicine - DIMED, University and Hospital of Padova, Padova, Italy
| | - Lisa B VanWagner
- Division of Digestive and Liver Diseases, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Elizabeth C Verna
- Division of Digestive and Liver Diseases, Columbia University, New York, NY, USA
| | - Ayse Akcan-Arikan
- Department of Pediatrics, Divisions of Critical Care Medicine and Nephrology, Baylor College of Medicine, Houston, TX, USA
| | - Paolo Angeli
- Unit of Internal Medicine and Hepatology, University and Teaching Hospital of Padua, Italy
| | - Justin M Belcher
- Section of Nephrology, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA; VA Connecticut Healthcare System, West Haven, CT, USA
| | - Scott W Biggins
- Division of Gastroenterology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Akash Deep
- Pediatric Intensive Care Unit, King's College Hospital, London, UK
| | - Guadalupe Garcia-Tsao
- Digestive Diseases Section, Yale University School of Medicine, New Haven, CT, USA; VA Connecticut Healthcare System, West Haven, CT, USA
| | - Yuri S Genyk
- Division of Abdominal Organ Transplantation and Hepatobiliary Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA; Division of Abdominal Organ Transplantation at Children's Hospital of Los Angeles, Los Angeles, CA, USA
| | - Pere Gines
- Liver Unit, Hospital Clínic de Barcelona, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi-Sunyer and Ciber de Enfermedades Hepàticas y Digestivas, Barcelona, Catalonia, Spain
| | - Patrick S Kamath
- Division of Gastroenterology and Hepatology Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Sandra L Kane-Gill
- Department of Pharmacy and Therapeutics, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA, USA
| | - Manish Kaushik
- Department of Renal Medicine, Singapore General Hospital, Singapore
| | - Nuttha Lumlertgul
- Excellence Centre in Critical Care Nephrology and Division of Nephrology, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Etienne Macedo
- Division of Nephrology, Department of Medicine, University of California San Diego, CA, USA
| | - Rakhi Maiwall
- Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India
| | | | - Raimund H Pichler
- Division of Nephrology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Claudio Ronco
- International Renal Research Institute of Vicenza, Department of Nephrology, Dialysis and Transplantation, San Bortolo Hospital, Vicenza-Italy
| | - Puneeta Tandon
- Division of Gastroenterology (Liver Unit), University of Alberta, Edmonton, Alberta, Canada
| | - Juan-Carlos Q Velez
- Department of Nephrology, Ochsner Health, New Orleans, LA, USA; Ochsner Clinical School, The University of Queensland, Brisbane, QLD, Australia
| | - Ravindra L Mehta
- Division of Nephrology-Hypertension, Department of Medicine, University of California San Diego, La Jolla, CA, USA
| | - François Durand
- Hepatology & Liver Intensive Care, Hospital Beaujon, Clichy, Paris, France; University Paris Cité, Paris, France.
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21
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Morgan C, Forest E, Ulrich E, Sutherland S. Pediatric acute kidney injury and adverse health outcomes: using a foundational framework to evaluate a causal link. Pediatr Nephrol 2024:10.1007/s00467-024-06437-y. [PMID: 38951220 DOI: 10.1007/s00467-024-06437-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 05/06/2024] [Accepted: 06/12/2024] [Indexed: 07/03/2024]
Abstract
Acute kidney injury (AKI) is a major global health problem, expensive to manage, and its associations with negative pediatric health outcomes have been clearly demonstrated. One of the most fundamental questions to consider as we use previous epidemiological information to advance research and care paradigms is the strength of the causal link between pediatric AKI and health outcomes. In this review, we apply the foundational framework of the Bradford Hill criteria to evaluate the extent to which a causal link exists between AKI and the associated adverse outcomes in children. Available data in children support a causal link between AKI and short-term outcomes including mortality, length of stay, and ventilation time. Clarifying the causal nature of longer term associations requires further high-quality observational studies in children, careful consideration of what defines the most meaningful and measurable longer term outcomes after pediatric AKI, and integration of evolving biological data related to mechanisms of disease. Preventing or mitigating AKI should lead to improved outcomes. Demonstrating such reversibility will solidify confidence in the causal relationship, improve child health, and highlight an aspect which is highly relevant to clinicians, scientists, and policy makers.
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Affiliation(s)
- Catherine Morgan
- Department of Pediatrics, Division of Nephrology, University of Alberta, Edmonton, AB, Canada.
| | - Emma Forest
- School of Public Health, University of Alberta, Edmonton, AB, Canada
| | - Emma Ulrich
- Department of Pediatrics, Division of Nephrology, University of Alberta, Edmonton, AB, Canada
| | - Scott Sutherland
- Department of Pediatrics, Division of Nephrology, Center for Academic Medicine, Stanford University School of Medicine, Palo Alto, CA, USA
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22
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Sanderson KR, Wekon-Kemeni C, Charlton JR. From premature birth to premature kidney disease: does accelerated aging play a role? Pediatr Nephrol 2024; 39:2001-2013. [PMID: 37947901 PMCID: PMC11082067 DOI: 10.1007/s00467-023-06208-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 11/12/2023]
Abstract
As the limits of fetal viability have increased over the past 30 years, there has been a growing body of evidence supporting the idea that chronic disease should be taken into greater consideration in addition to survival after preterm birth. Accumulating evidence also suggests there is early onset of biologic aging after preterm birth. Similarly, chronic kidney disease (CKD) is also associated with a phenotype of advanced biologic age which exceeds chronologic age. Yet, significant knowledge gaps remain regarding the link between premature biologic age after preterm birth and kidney disease. This review summarizes the four broad pillars of aging, the evidence of premature aging following preterm birth, and in the setting of CKD. The aim is to provide additional plausible biologic mechanisms to explore the link between preterm birth and CKD. There is a need for more research to further elucidate the biologic mechanisms of the premature aging paradigm and kidney disease after preterm birth. Given the emerging research on therapies for premature aging, this paradigm could create pathways for prevention of advanced CKD.
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Affiliation(s)
- Keia R Sanderson
- Department of Medicine-Nephrology, University of North Carolina, Chapel Hill, NC, USA.
| | - Christel Wekon-Kemeni
- Department of Pediatrics, University of North Carolina, Chapel Hill, NC, USA
- Division of Pediatric Nephrology, Emory University School of Medicine, and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Jennifer R Charlton
- Department of Pediatrics, Division of Nephrology, University of Virginia, Charlottesville, VA, USA
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23
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Li Y, Luo C, Cai Y, Wu Y, Shu T, Wei J, Wang H, Niu H. IGF2BP3/NCBP1 complex inhibits renal tubular senescence through regulation of CDK6 mRNA stability. Transl Res 2024; 273:1-15. [PMID: 38945255 DOI: 10.1016/j.trsl.2024.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 06/16/2024] [Accepted: 06/18/2024] [Indexed: 07/02/2024]
Abstract
Renal aging and the subsequent rise in kidney-related diseases are attributed to senescence in renal tubular epithelial cells (RTECs). Our study revealed that the abnormal expression of insulin-like growth factor 2 mRNA-binding protein 3 (IGF2BP3), a reader of RNA N6-methyladenosine, is critically involved in cisplatin-induced renal tubular senescence. In cisplatin-induced senescence of RTECs, the promoter activity and transcription of IGF2BP3 is markedly suppressed. It was due to the down regulation of MYC proto-oncogene (MYC), which regulates IGF2BP3 transcription by binding to the putative site at 1852-1863 of the IGF2BP3 promoter. Overexpression of IGF2BP3 ameliorated cisplatin-induced renal tubular senescence in vitro. Mechanistic studies revealed that IGF2BP3 inhibits cellular senescence in RTECs by enhancing cyclin-dependent kinase 6 (CDK6) mRNA stability and increasing its expression. The inhibition effect of IGF2BP3 on tubular senescence is partially reversed by the knockdown of CDK6. Further, IGF2BP3 recruits nuclear cap binding protein subunit 1 (NCBP1) and inhibits CDK6 mRNA decay, by recognizing m6A modification. Specifically, IGF2BP3 recognizes m6A motif "GGACU" at nucleotides 110-114 in the 5' untranslated region (UTR) field of CDK6 mRNA. The involvement of IGF2BP3/CDK6 in alleviating tubular senescence was confirmed in a cisplatin-induced acute kidney injury (AKI)-to-chronic kidney disease (CKD) model. Clinical data also suggests an age-related decrease in IGF2BP3 and CDK6 levels in renal tissue or serum samples from patients. These findings suggest that IGF2BP3/CDK6 may be a promising target in cisplatin-induced tubular senescence and renal failure.
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Affiliation(s)
- Yaqin Li
- Department of General Practice, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Congwei Luo
- Department of Nephrology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yating Cai
- Department of Nephrology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yan Wu
- Department of General Practice, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Tao Shu
- Department of General Practice, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jingyan Wei
- Department of General Practice, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Hongsheng Wang
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China.
| | - Hongxin Niu
- Department of General Practice, Special Medical Service Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
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24
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Zhou J, Shi W, Wu D, Wang S, Wang X, Min J, Wang F. Mendelian Randomization Analysis of Systemic Iron Status and Risk of Different Types of Kidney Disease. Nutrients 2024; 16:1978. [PMID: 38999730 PMCID: PMC11243746 DOI: 10.3390/nu16131978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 06/08/2024] [Accepted: 06/19/2024] [Indexed: 07/14/2024] Open
Abstract
With rapid increases in incidence, diverse subtypes, and complicated etiologies, kidney disease remains a global public health problem. Iron, as an essential trace element, has pleiotropic effects on renal function and the progression of kidney diseases. A two-sample Mendelian randomization (MR) analysis was implemented to determine the potential causal effects between systemic iron status on different kidney diseases. Systemic iron status was represented by four iron-related biomarkers: serum iron, ferritin, transferrin saturation (TfSat), and total iron binding capacity (TIBC). For systemic iron status, 163,511, 246,139, 131,471, and 135,430 individuals were included in the genome-wide association study (GWAS) of serum iron, ferritin, TfSat, and TIBC, respectively. For kidney diseases, 653,143 individuals (15,658 cases and 637,485 controls), 657,076 individuals (8160 cases and 648,916 controls), and 659,320 individuals (10,404 cases and 648,916 controls) were included for immunoglobulin A nephropathy (IgAN), acute kidney disease (AKD), and chronic kidney disease (CKD), respectively. Our MR results showed that increased serum iron [odds ratio (OR): 1.10; 95% confidence interval (95% CI): 1.04, 1.16; p < 0.0042], ferritin (OR: 1.30; 95% CI: 1.14, 1.48; p < 0.0042), and TfSat (OR: 1.07; 95% CI: 1.04, 1.11; p < 0.0042)] and decreased TIBC (OR: 0.92; 95% CI: 0.88, 0.97; p < 0.0042) were associated with elevated IgAN risk. However, no significant associations were found between systemic iron status and AKD or CKD. In our MR study, the genetic evidence supports elevated systemic iron status as a causal effect on IgAN, which suggests a potential protective effect of iron chelation on IgAN patients.
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Affiliation(s)
- Jiahui Zhou
- The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Wanting Shi
- The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Dongya Wu
- The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Shujie Wang
- The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Xinhui Wang
- Sir Run Run Shaw Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Junxia Min
- The First Affiliated Hospital, Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Fudi Wang
- The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou 310058, China
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25
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Zhang D, Jiang H, Yang X, Zheng S, Li Y, Liu S, Xu X. Traditional Chinese Medicine and renal regeneration: experimental evidence and future perspectives. Chin Med 2024; 19:77. [PMID: 38831435 PMCID: PMC11149241 DOI: 10.1186/s13020-024-00935-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 04/22/2024] [Indexed: 06/05/2024] Open
Abstract
Repair of acute kidney injury (AKI) is a typical example of renal regeneration. AKI is characterized by tubular cell death, peritubular capillary (PTC) thinning, and immune system activation. After renal tubule injury, resident renal progenitor cells, or renal tubule dedifferentiation, give rise to renal progenitor cells and repair the damaged renal tubule through proliferation and differentiation. Mesenchymal stem cells (MSCs) also play an important role in renal tubular repair. AKI leads to sparse PTC, affecting the supply of nutrients and oxygen and indirectly aggravating AKI. Therefore, repairing PTC is important for the prognosis of AKI. The activation of the immune system is conducive for the body to clear the necrotic cells and debris generated by AKI; however, if the immune activation is too strong or lengthy, it will cause damage to renal tubule cells or inhibit their repair. Macrophages have been shown to play an important role in the repair of kidney injury. Traditional Chinese medicine (TCM) has unique advantages in the treatment of AKI and a series of studies have been conducted on the topic in recent years. Herein, the role of TCM in promoting the repair of renal injury and its molecular mechanism is discussed from three perspectives: repair of renal tubular epithelial cells, repair of PTC, and regulation of macrophages to provide a reference for the treatment and mechanistic research of AKI.
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Affiliation(s)
- Denglu Zhang
- Central Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
- Shandong Key Laboratory of Dominant Diseases of Traditional Chinese Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Huihui Jiang
- Clinical Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xianzhen Yang
- Urinary Surgery, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Sanxia Zheng
- Pediatric Department, The Second Affiliated Hospital of Shandong University of Chinese Medicine, Jinan, China
| | - Yi Li
- Department of Central Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.
- Engineering Laboratory of Urinary Organ and Functional Reconstruction of Shandong Province, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.
| | - Shuai Liu
- Central Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
- Shandong Key Laboratory of Dominant Diseases of Traditional Chinese Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
| | - Xiangdong Xu
- Central Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
- Shandong Key Laboratory of Dominant Diseases of Traditional Chinese Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
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Lin HYH, Liang CJ, Yang MY, Chen PL, Wang TM, Chen YH, Shih YH, Liu W, Chiu CC, Chiang CK, Lin CS, Lin HC. Critical roles of tubular mitochondrial ATP synthase dysfunction in maleic acid-induced acute kidney injury. Apoptosis 2024; 29:620-634. [PMID: 38281282 PMCID: PMC11055741 DOI: 10.1007/s10495-023-01897-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2023] [Indexed: 01/30/2024]
Abstract
Maleic acid (MA) induces renal tubular cell dysfunction directed to acute kidney injury (AKI). AKI is an increasing global health burden due to its association with mortality and morbidity. However, targeted therapy for AKI is lacking. Previously, we determined mitochondrial-associated proteins are MA-induced AKI affinity proteins. We hypothesized that mitochondrial dysfunction in tubular epithelial cells plays a critical role in AKI. In vivo and in vitro systems have been used to test this hypothesis. For the in vivo model, C57BL/6 mice were intraperitoneally injected with 400 mg/kg body weight MA. For the in vitro model, HK-2 human proximal tubular epithelial cells were treated with 2 mM or 5 mM MA for 24 h. AKI can be induced by administration of MA. In the mice injected with MA, the levels of blood urea nitrogen (BUN) and creatinine in the sera were significantly increased (p < 0.005). From the pathological analysis, MA-induced AKI aggravated renal tubular injuries, increased kidney injury molecule-1 (KIM-1) expression and caused renal tubular cell apoptosis. At the cellular level, mitochondrial dysfunction was found with increasing mitochondrial reactive oxygen species (ROS) (p < 0.001), uncoupled mitochondrial respiration with decreasing electron transfer system activity (p < 0.001), and decreasing ATP production (p < 0.05). Under transmission electron microscope (TEM) examination, the cristae formation of mitochondria was defective in MA-induced AKI. To unveil the potential target in mitochondria, gene expression analysis revealed a significantly lower level of ATPase6 (p < 0.001). Renal mitochondrial protein levels of ATP subunits 5A1 and 5C1 (p < 0.05) were significantly decreased, as confirmed by protein analysis. Our study demonstrated that dysfunction of mitochondria resulting from altered expression of ATP synthase in renal tubular cells is associated with MA-induced AKI. This finding provides a potential novel target to develop new strategies for better prevention and treatment of MA-induced AKI.
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Affiliation(s)
- Hugo Y-H Lin
- Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
- Department of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, 100, Shih-Chuan 1St Road, Kaohsiung, 80708, Taiwan.
| | - Chan-Jung Liang
- Department of Oral Hygiene, Shu-Zen Junior College of Medicine and Management, Kaohsiung, Taiwan
- Grander Pharmacy, Kaohsiung, Taiwan
| | - Ming-Yu Yang
- College of Medicine, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Phang-Lang Chen
- Department of Biological Chemistry, University of California, Irvine, USA
| | - Tzu-Ming Wang
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Yen-Hua Chen
- School of Medicine, Doctoral Program of Clinical and Experimental Medicine, Institute of Biomedical Sciences, College of Medicine, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Yao-Hsiang Shih
- Department of Anatomy, College of Medicine, Kaohsiung Medical University, 100, Shih-Chuan 1St Road, Kaohsiung, 80708, Taiwan
| | - Wangta Liu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Chien-Chih Chiu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Chih-Kang Chiang
- Graduate Institute of Toxicology, National Taiwan University, Taipei, Taiwan
| | - Chang-Shen Lin
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, 100, Shih-Chuan 1St Road, Kaohsiung, 80708, Taiwan.
| | - Han-Chen Lin
- Department of Anatomy, College of Medicine, Kaohsiung Medical University, 100, Shih-Chuan 1St Road, Kaohsiung, 80708, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 80756, Taiwan.
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Wang Y, Kuang Z, Xing X, Qiu Y, Zhang J, Shao D, Huang J, Dai C, He W. Proximal tubular FHL2, a novel downstream target of hypoxia inducible factor 1, is a protector against ischemic acute kidney injury. Cell Mol Life Sci 2024; 81:244. [PMID: 38814462 PMCID: PMC11139843 DOI: 10.1007/s00018-024-05289-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 05/14/2024] [Accepted: 05/20/2024] [Indexed: 05/31/2024]
Abstract
Four-and-a-half LIM domains protein 2 (FHL2) is an adaptor protein that may interact with hypoxia inducible factor 1α (HIF-1α) or β-catenin, two pivotal protective signaling in acute kidney injury (AKI). However, little is known about the regulation and function of FHL2 during AKI. We found that FHL2 was induced in renal tubular cells in patients with acute tubular necrosis and mice model of ischemia-reperfusion injury (IRI). In cultured renal proximal tubular cells (PTCs), hypoxia induced FHL2 expression and promoted the binding of HIF-1 to FHL2 promoter. Compared with control littermates, mice with PTC-specific deletion of FHL2 gene displayed worse renal function, more severe morphologic lesion, more tubular cell death and less cell proliferation, accompanying by downregulation of AQP1 and Na, K-ATPase after IRI. Consistently, loss of FHL2 in PTCs restricted activation of HIF-1 and β-catenin signaling simultaneously, leading to attenuation of glycolysis, upregulation of apoptosis-related proteins and downregulation of proliferation-related proteins during IRI. In vitro, knockdown of FHL2 suppressed hypoxia-induced activation of HIF-1α and β-catenin signaling pathways. Overexpression of FHL2 induced physical interactions between FHL2 and HIF-1α, β-catenin, GSK-3β or p300, and the combination of these interactions favored the stabilization and nuclear translocation of HIF-1α and β-catenin, enhancing their mediated gene transcription. Collectively, these findings identify FHL2 as a direct downstream target gene of HIF-1 signaling and demonstrate that FHL2 could play a critical role in protecting against ischemic AKI by promoting the activation of HIF-1 and β-catenin signaling through the interactions with its multiple protein partners.
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Affiliation(s)
- Yan Wang
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, 262 North Zhongshan Road, Nanjing, Jiangsu, 210003, China
| | - Ziwei Kuang
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, 262 North Zhongshan Road, Nanjing, Jiangsu, 210003, China
| | - Xueqi Xing
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, 262 North Zhongshan Road, Nanjing, Jiangsu, 210003, China
| | - Yumei Qiu
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, 262 North Zhongshan Road, Nanjing, Jiangsu, 210003, China
| | - Jie Zhang
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, 262 North Zhongshan Road, Nanjing, Jiangsu, 210003, China
| | - Dandan Shao
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, 262 North Zhongshan Road, Nanjing, Jiangsu, 210003, China
| | - Jiaxin Huang
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, 262 North Zhongshan Road, Nanjing, Jiangsu, 210003, China
| | - Chunsun Dai
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, 262 North Zhongshan Road, Nanjing, Jiangsu, 210003, China.
| | - Weichun He
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, 262 North Zhongshan Road, Nanjing, Jiangsu, 210003, China.
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Prem PN, Kurian GA. Does cardiac impairment develop in ischemic renal surgery in rats depending on the reperfusion time? Heliyon 2024; 10:e31389. [PMID: 38803877 PMCID: PMC11129087 DOI: 10.1016/j.heliyon.2024.e31389] [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: 10/12/2023] [Revised: 05/14/2024] [Accepted: 05/15/2024] [Indexed: 05/29/2024] Open
Abstract
Background Renal dysfunction is known to cause heart failure. However, renal dysfunction associated with kidney surgeries (mediated by reperfusion injury) that affects the cardiac physiological function, especially during the recovery and repair phase of renal surgery is unknown. Method Male Wistar rats (238 ± 18 g) were subjected to renal sham and ischemia-reperfusion (IR-bilateral clamping for 15 min/45 min and reperfusion for 24 h/48 h/7 days) surgeries. At the end of the experiment, the heart was isolated from the animal (to exclude neurohormonal influence) and perfused for 60 min with Krebs-Hanseleit buffer to study the physiological changes. Result Renal artery bilateral occlusion for 45 min that creates ischemia, followed by 24 h of reperfusion did not impart any significant cardiac physiological functional decline but 48 h of reperfusion exhibited a significant decline in cardiac hemodynamic indices (Rate pressure product in x104 mmHg*beats/min: Sham- 3.53 ± 0.19, I45_R48-2.82 ± 0.21) with mild tissue injury. However, 7 days of reperfusion inflict significant physiological decline (Rate pressure product in x104 mmHg*beats/min - 2.5 ± 0.14) and tissue injury (Injury score- 4 ± 1.5) in isolated rat hearts. Interestingly, when the renal artery bilateral occlusion time was reduced to 15 min the changes in the hearts were negligible after 7 days. Cellular level exploration reveals a positive relation between functional deterioration of mitochondria and elevated mitochondrial oxidative stress and inflammation with cardiac physiological decline and injury linked with renal ischemia-reperfusion surgery. Conclusion Cardiac functional decline associated with renal surgery is manifested during renal repair or recovery. This decline depends on cardiac mitochondrial health, which is negatively influenced by the renal IR mediators and kidney function.
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Affiliation(s)
- Priyanka N. Prem
- Vascular Biology Lab, ASK-1, SASTRA Deemed University, Tirumalaisamudram, Thanjavur, Tamil Nadu, India
- School of Chemical and Biotechnology, SASTRA Deemed University, Tirumalaisamudram, Thanjavur, Tamil Nadu, India
| | - Gino A. Kurian
- Vascular Biology Lab, ASK-1, SASTRA Deemed University, Tirumalaisamudram, Thanjavur, Tamil Nadu, India
- School of Chemical and Biotechnology, SASTRA Deemed University, Tirumalaisamudram, Thanjavur, Tamil Nadu, India
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Hitaka Y, Isoyama N, Tsuji S, Honda T, Nakayama Y, Yamaguchi M, Nakamura K, Hirata H, Shiraishi K, Asagiri M. Renoprotective effects of laxative linaclotide: Inhibition of acute kidney injury and fibrosis in a rat model of renal ischemia-reperfusion. Biochem Biophys Res Commun 2024; 709:149709. [PMID: 38554603 DOI: 10.1016/j.bbrc.2024.149709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 02/20/2024] [Indexed: 04/02/2024]
Abstract
Ischemia-reperfusion (I/R) leads to tissue damage in transplanted kidneys, resulting in acute kidney injury (AKI) and chronic graft dysfunction, which critically compromises transplant outcomes, such as graft loss. Linaclotide, a guanylate cyclase C agonist clinically approved as a laxative, has recently been identified to exhibit renoprotective effects in a chronic kidney disease (CKD) model. This study evaluates the therapeutic effects of linaclotide on AKI triggered by I/R in a rat model with an initial comparison with other laxatives. Here, we show that linaclotide administration resulted in substantial reduction in serum creatinine levels, reflective of enhanced renal function. Histological examination revealed diminished tubular damage, and Sirius Red staining confirmed less collagen deposition, collectively indicating preserved structural integrity and mitigation of fibrosis. Further analysis demonstrated lowered expression of TGF-β and associated fibrotic markers, α-SMA, MMP2, and TIMP1, implicating the downregulation of the fibrogenic TGF-β pathway by linaclotide. Furthermore, one day after I/R insult, linaclotide profoundly diminished macrophage infiltration and suppressed critical pro-inflammatory cytokines such as TNF, IL-1β, and IL-6, signifying its potential to disrupt initial inflammatory mechanisms integral to AKI pathology. These findings suggest that linaclotide, with its established safety profile, could extend its benefits beyond gastrointestinal issues and potentially serve as a therapeutic intervention for organ transplantation. Additionally, it could provide immediate and practical insights into selecting laxatives for managing patients with AKI or CKD, regardless of the cause, and for those receiving dialysis or transplant therapy.
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Affiliation(s)
- Yukihiro Hitaka
- Department of Urology, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan; Department of Pharmacology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Naohito Isoyama
- Department of Urology, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Shunya Tsuji
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Takeshi Honda
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Yuki Nakayama
- Department of Urology, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Mitsuhiro Yamaguchi
- Department of Urology, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Kimihiko Nakamura
- Department of Urology, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Hiroshi Hirata
- Department of Urology, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Koji Shiraishi
- Department of Urology, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Masataka Asagiri
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan.
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Moreno J, Gluud LL, Galsgaard ED, Hvid H, Mazzoni G, Das V. Identification of ligand and receptor interactions in CKD and MASH through the integration of single cell and spatial transcriptomics. PLoS One 2024; 19:e0302853. [PMID: 38768139 PMCID: PMC11104622 DOI: 10.1371/journal.pone.0302853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 04/10/2024] [Indexed: 05/22/2024] Open
Abstract
BACKGROUND Chronic Kidney Disease (CKD) and Metabolic dysfunction-associated steatohepatitis (MASH) are metabolic fibroinflammatory diseases. Combining single-cell (scRNAseq) and spatial transcriptomics (ST) could give unprecedented molecular disease understanding at single-cell resolution. A more comprehensive analysis of the cell-specific ligand-receptor (L-R) interactions could provide pivotal information about signaling pathways in CKD and MASH. To achieve this, we created an integrative analysis framework in CKD and MASH from two available human cohorts. RESULTS The analytical framework identified L-R pairs involved in cellular crosstalk in CKD and MASH. Interactions between cell types identified using scRNAseq data were validated by checking the spatial co-presence using the ST data and the co-expression of the communicating targets. Multiple L-R protein pairs identified are known key players in CKD and MASH, while others are novel potential targets previously observed only in animal models. CONCLUSION Our study highlights the importance of integrating different modalities of transcriptomic data for a better understanding of the molecular mechanisms. The combination of single-cell resolution from scRNAseq data, combined with tissue slide investigations and visualization of cell-cell interactions obtained through ST, paves the way for the identification of future potential therapeutic targets and developing effective therapies.
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Affiliation(s)
- Jaime Moreno
- Digital Science and Innovation, Computational Biology – AI & Digital Research, Novo Nordisk A/S, Maløv, Denmark
| | - Lise Lotte Gluud
- Gastro Unit, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
- Dept of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | | | - Henning Hvid
- Global Drug Discovery, Novo Nordisk A/S, Maløv, Denmark
| | - Gianluca Mazzoni
- Digital Science and Innovation, Computational Biology – AI & Digital Research, Novo Nordisk A/S, Maløv, Denmark
| | - Vivek Das
- Digital Science and Innovation, Computational Biology – AI & Digital Research, Novo Nordisk A/S, Maløv, Denmark
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Möckel T, Boegel S, Schwarting A. Transcriptome Analysis of BAFF/BAFF-R System in Murine Nephrotoxic Serum Nephritis. Int J Mol Sci 2024; 25:5415. [PMID: 38791453 PMCID: PMC11121395 DOI: 10.3390/ijms25105415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 05/02/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Chronic kidney disease (CKD) is an emerging cause for morbidity and mortality worldwide. Acute kidney injury (AKI) can transition to CKD and finally to end-stage renal disease (ESRD). Targeted treatment is still unavailable. NF-κB signaling is associated with CKD and activated by B cell activating factor (BAFF) via BAFF-R binding. In turn, renal tubular epithelial cells (TECs) are critical for the progression of fibrosis and producing BAFF. Therefore, the direct involvement of the BAFF/BAFF-R system to the pathogenesis of CKD is conceivable. We performed non-accelerated nephrotoxic serum nephritis (NTN) as the CKD model in BAFF KO (B6.129S2-Tnfsf13btm1Msc/J), BAFF-R KO (B6(Cg)-Tnfrsf13ctm1Mass/J) and wildtype (C57BL/6J) mice to analyze the BAFF/BAFF-R system in anti-glomerular basement membrane (GBM) disease using high throughput RNA sequencing. We found that BAFF signaling is directly involved in the upregulation of collagen III as BAFF ko mice showed a reduced expression. However, these effects were not mediated via BAFF-R. We identified several upregulated genes that could explain the effects of BAFF in chronic kidney injury such as Txnip, Gpx3, Igfbp7, Ccn2, Kap, Umod and Ren1. Thus, we conclude that targeted treatment with anti-BAFF drugs such as belimumab may reduce chronic kidney damage. Furthermore, upregulated genes may be useful prognostic CKD biomarkers.
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Affiliation(s)
- Tamara Möckel
- Division of Rheumatology and Clinical Immunology, Department of Internal Medicine I, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany; (T.M.); (S.B.)
| | - Sebastian Boegel
- Division of Rheumatology and Clinical Immunology, Department of Internal Medicine I, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany; (T.M.); (S.B.)
| | - Andreas Schwarting
- Division of Rheumatology and Clinical Immunology, Department of Internal Medicine I, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany; (T.M.); (S.B.)
- Center for Rheumatic Disease Rhineland-Palatinate GmbH, 55543 Bad Kreuznach, Germany
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Chen J, Li G, He X, Chen X, Chen Z, Liu D, Guo S, Huang T, Lin Y, Lan P, Lian L, He X. ELMO1 ameliorates intestinal epithelial cellular senescence via SIRT1/p65 signaling in inflammatory bowel disease-related fibrosis. Gastroenterol Rep (Oxf) 2024; 12:goae045. [PMID: 38756351 PMCID: PMC11096966 DOI: 10.1093/gastro/goae045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/01/2024] [Accepted: 04/10/2024] [Indexed: 05/18/2024] Open
Abstract
Background Intestinal fibrosis is a common complication in inflammatory bowel disease (IBD), which still lacks of reliable markers and therapeutic options. Cellular senescence has been considered an important mechanism of intestinal fibrosis, but the underlying molecular link remains elusive. Methods Tissues were stained using α-smooth muscle actin (α-SMA), fibronectin, and collagen I as markers of myofibroblastic differentiation. Cellular senescence was confirmed through Lamin B1 staining, senescence-associated β-galactosidase staining, and the expression of senescence-associated secretory phenotype (SASP) factors. We explored the relationship between senescence of intestinal epithelial cells (IECs) and intestinal fibrosis, as well as the molecular mechanism underlying this interaction. The effects of irisin on cellular senescence and fibrosis were determined. Results Here, we identify engulfment and cell motility protein 1 (ELMO1) as a novel biomarker for intestinal cellular senescence and fibrosis. In fibrostrictured tissues from patients and murine models with IBD, significantly high levels of cellular senescence score and factors were noted, which positively correlated with the fibrotic regulator fibronectin. Senescent IECs, not fibroblast itself, released SASP factors to regulate fibroblast activation. Prolonging exposure to severe and persistent injurious stimuli decreased ELMO1 expression, which dampened SIRT1 deacetylase activity, enhanced NF-κB (p65) acetylation, and thereby accelerated cellular senescence. Deletion of ELMO1 led to senescent IECs accumulation and triggered premature fibrosis in murine colitis. Furthermore, irisin, inhibiting the degradation of ELMO1, could downregulate p65 acetylation, reduce IECs senescence, and prevent incipient intestinal fibrosis in murine colitis models. Conclusions This study reveals ELMO1 downregulation is an early symbol of intestinal senescence and fibrosis, and the altered ELMO1-SIRT1-p65 pathway plays an important role in intestinal cellular senescence and IBD-related fibrosis.
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Affiliation(s)
- Junguo Chen
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Department of Thoracic Surgery, Thoracic Cancer Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Guanman Li
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- School of Medicine (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong, P. R. China
| | - Xiaowen He
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Xijie Chen
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Department of Gastrointestinal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Zexian Chen
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Danling Liu
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Shuang Guo
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Tianze Huang
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Yanyun Lin
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Ping Lan
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Lei Lian
- Department of Gastrointestinal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Xiaosheng He
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
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Livingston MJ, Zhang M, Kwon SH, Chen JK, Li H, Manicassamy S, Dong Z. Autophagy activates EGR1 via MAPK/ERK to induce FGF2 in renal tubular cells for fibroblast activation and fibrosis during maladaptive kidney repair. Autophagy 2024; 20:1032-1053. [PMID: 37978868 PMCID: PMC11135847 DOI: 10.1080/15548627.2023.2281156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 11/03/2023] [Indexed: 11/19/2023] Open
Abstract
Macroautophagy/autophagy contributes to maladaptive kidney repair by inducing pro-fibrotic factors such as FGF2 (fibroblast growth factor 2), but the underlying mechanism remains elusive. Here, we show that EGR1 (early growth response 1) was induced in injured proximal tubules after ischemic acute kidney injury (AKI) and this induction was suppressed by autophagy deficiency in inducible, renal tubule-specific atg7 (autophagy related 7) knockout (iRT-atg7 KO) mice. In cultured proximal tubular cells, TGFB1 (transforming growth factor beta 1) induced EGR1 and this induction was also autophagy dependent. Egr1 knockdown in tubular cells reduced FGF2 expression during TGFB1 treatment, leading to less FGF2 secretion and decreased paracrine effects on fibroblasts. ChIP assay detected an increased binding of EGR1 to the Fgf2 gene promoter in TGFB1-treated tubular cells. Both Fgf2 and Egr1 transcription was inhibited by FGF2 neutralizing antibody, suggesting a positive feedback for EGR1-mediated FGF2 autoregulation. This feedback was confirmed using fgf2-deficient tubular cells and fgf2-deficient mice. Upstream of EGR1, autophagy deficiency in mice suppressed MAPK/ERK (mitogen-activated protein kinase) activation in post-ischemic renal tubules. This inhibition correlated with SQSTM1/p62 (sequestosome 1) aggregation and its sequestration of MAPK/ERK. SQSTM1/p62 interacted with MAPK/ERK and blocked its activation during TGFB1 treatment in autophagy-deficient tubular cells. Inhibition of MAPK/ERK suppressed EGR1 and FGF2 expression in maladaptive tubules, leading to the amelioration of renal fibrosis and improvement of renal function. These results suggest that autophagy activates MAPK/ERK in renal tubular cells, which induces EGR1 to transactivate FGF2. FGF2 is then secreted into the interstitium to stimulate fibroblasts for fibrogenesis.Abbreviation: 3-MA: 3-methyladenine; ACTA2/α-SMA: actin alpha 2, smooth muscle, aorta; ACTB/β-actin: actin, beta; AKI: acute kidney injury; aa: amino acid; ATG/Atg: autophagy related; BUN: blood urea nitrogen; ChIP: chromatin immunoprecipitation; CKD: chronic kidney disease; CM: conditioned medium; COL1A1: collagen, type I, alpha 1; COL4A1: collagen, type IV, alpha 1; CQ: chloroquine; DBA: dolichos biflorus agglutinin; EGR1: early growth response 1; ELK1: ELK1, member of ETS oncogene family; FGF2: fibroblast growth factor 2; FN1: fibronectin 1; GAPDH: glyceraldehyde-3-phosphate dehydrogenase; HAVCR1/KIM-1: hepatitis A virus cellular receptor 1; IP: immunoprecipitation; LIR: LC3-interacting region; MAP1LC3B/LC3B: microtubule-associated protein 1 light chain 3 beta; MAP2K/MEK: mitogen-activated protein kinase kinase; MAPK: mitogen-activated protein kinase; NFKB: nuclear factor kappa B; PB1: Phox and Bem1; PFT: pifithrin α; PPIB/cyclophilin B: peptidylprolyl isomerase B; RT-qPCR: real time-quantitative PCR; SQSTM1/p62: sequestosome 1; TGFB1/TGF-β1: transforming growth factor beta 1; VIM: vimentin.
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Affiliation(s)
- Man J. Livingston
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University, Augusta, GA, USA
- Research Department, Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - Ming Zhang
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Sang-Ho Kwon
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Jian-Kang Chen
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Honglin Li
- Department of Biochemistry and Molecular Biology, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Santhakumar Manicassamy
- Department of Biochemistry and Molecular Biology, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Zheng Dong
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University, Augusta, GA, USA
- Research Department, Charlie Norwood VA Medical Center, Augusta, GA, USA
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Wang H, Zhang P, Wang W, He L, Liu N, Yang J, Tang D, Li G, Feng Y, Zhang W. [ 18F] AlF-NOTA-FAPI-04 PET/CT for non-invasive assessment of tubular injury in kidney diseases. Clin Kidney J 2024; 17:sfae064. [PMID: 38803395 PMCID: PMC11129583 DOI: 10.1093/ckj/sfae064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Indexed: 05/29/2024] Open
Abstract
Background [18F] AlF-NOTA-FAPI-04 is a novel positron emission tomography (PET) ligand, which specifically targets fibroblast activation protein (FAP) expression as a FAP inhibitor (FAPI). We analysed the diagnostic value of [18F] AlF-NOTA-FAPI-04 PET/CT for the non-invasive assessment of kidney interstitial inflammation and fibrosis in different renal pathologies. Methods Twenty-six patients (14 males and 12 females; mean age, 50.5 ± 16.5 years) with a wide range of kidney diseases and 10 patients (six males and four females; mean age, 55.4 ± 8.6 years) without known evidence of renal disease as disease controls underwent [18F] AlF-NOTA-FAPI-04 PET/CT imaging. Kidney tissues obtained from kidney biopsies were stained with haematoxylin and eosin, periodic acid-Schiff, Masson's trichome, and periodic acid-silver methenamine. Immunohistochemical staining was also performed to assess the expression of α-smooth muscle actin (αSMA) and FAP. Renal parenchymal FAPI uptake reflected by maximum standardized uptake value (SUVmax) and mean standardized uptake value (SUVmean) measurements on PET/CT was analysed against pathohistological findings. Results We found that renal parenchymal FAPI uptake was significantly higher in patients with various kidney diseases than in control patients in this study (SUVmax = 4.3 ± 1.8 vs 1.9 ± 0.4, SUVmean=3.9 ± 1.7 vs 1.5 ± 0.4, respectively; all P < 0.001). All kidney diseases, both in acute and chronic kidney disease, had increased renal parenchymal uptake to varying degrees. The correlation analysis indicated a positive association between the SUVmax and the tubulointerstitial inflammation (TII), interstitial fibrosis and tubular atrophy (IF/TA), and TII + IF/TA scores (r = 0.612, 0.681, and 0.754, all P < 0.05), and between the SUVmean and the TII, IF/TA, and TII + IF/TA scores (r = 0.603, 0.700, and 0.748, all P < 0.05). Furthermore, we found significant positive correlations between both SUVmax and the SUVmean with SMA and FAP staining scores (r = 0.686 and 0.732, r = 0.667 and 0.739, respectively; both P < 0.001). Conclusions [18F] AlF-NOTA-FAPI-04 PET/CT is clinically available for the comprehensive and non-invasive assessment of tubular injury in various kidney diseases.
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Affiliation(s)
- Hao Wang
- Department of Nuclear Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Ping Zhang
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Wei Wang
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Limeng He
- Department of Nuclear Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Nan Liu
- Department of Nuclear Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Juan Yang
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Deying Tang
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Guisen Li
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Yunlin Feng
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Wei Zhang
- Department of Nuclear Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
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35
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Koh ES, Chung S. Recent Update on Acute Kidney Injury-to-Chronic Kidney Disease Transition. Yonsei Med J 2024; 65:247-256. [PMID: 38653563 PMCID: PMC11045347 DOI: 10.3349/ymj.2023.0306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 12/27/2023] [Accepted: 01/23/2024] [Indexed: 04/25/2024] Open
Abstract
Acute kidney injury (AKI) is characterized by an abrupt decline of excretory kidney function. The incidence of AKI has increased in the past decades. Patients diagnosed with AKI often undergo diverse clinical trajectories, such as early or late recovery, relapses, and even a potential transition from AKI to chronic kidney disease (CKD). Although recent clinical studies have demonstrated a strong association between AKI and progression of CKD, our understanding of the complex relationship between AKI and CKD is still evolving. No cohort study has succeeded in painting a comprehensive picture of these multi-faceted pathways. To address this lack of understanding, the idea of acute kidney disease (AKD) has recently been proposed. This presents a new perspective to pinpoint a period of heightened vulnerability following AKI, during which a patient could witness a substantial decline in glomerular filtration rate, ultimately leading to CKD transition. Although AKI is included in a range of kidney conditions collectively known as AKD, spanning from mild and self-limiting to severe and persistent, AKD can also occur without a rapid onset usually seen in AKI, such as when kidney dysfunction slowly evolves. In the present review, we summarize the most recent findings about AKD, explore the current state of biomarker discovery related to AKD, discuss the latest insights into pathophysiological underpinnings of AKI to CKD transition, and reflect on therapeutic challenges and opportunities that lie ahead.
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Affiliation(s)
- Eun Sil Koh
- Division of Nephrology, Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sungjin Chung
- Division of Nephrology, Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
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Saiz ML, Lozano-Chamizo L, Florez AB, Marciello M, Diaz-Bulnes P, Corte-Iglesias V, Bernet CR, Rodrigues-Diez RR, Martin-Martin C, Rodriguez-Santamaria M, Fernandez-Vega I, Rodriguez RM, Diaz-Corte C, Suarez-Alvarez B, Filice M, Lopez-Larrea C. BET inhibitor nanotherapy halts kidney damage and reduces chronic kidney disease progression after ischemia-reperfusion injury. Biomed Pharmacother 2024; 174:116492. [PMID: 38537579 DOI: 10.1016/j.biopha.2024.116492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 03/12/2024] [Accepted: 03/19/2024] [Indexed: 05/01/2024] Open
Abstract
Targeting epigenetic mechanisms has emerged as a potential therapeutic approach for the treatment of kidney diseases. Specifically, inhibiting the bromodomain and extra-terminal (BET) domain proteins using the small molecule inhibitor JQ1 has shown promise in preclinical models of acute kidney injury (AKI) and chronic kidney disease (CKD). However, its clinical translation faces challenges due to issues with poor pharmacokinetics and side effects. Here, we developed engineered liposomes loaded with JQ1 with the aim of enhancing kidney drug delivery and reducing the required minimum effective dose by leveraging cargo protection. These liposomes efficiently encapsulated JQ1 in both the membrane and core, demonstrating superior therapeutic efficacy compared to freely delivered JQ1 in a mouse model of kidney ischemia-reperfusion injury. JQ1-loaded liposomes (JQ1-NPs) effectively targeted the kidneys and only one administration, one-hour after injury, was enough to decrease the immune cell (neutrophils and monocytes) infiltration to the kidney-an early and pivotal step to prevent damage progression. By inhibiting BRD4, JQ1-NPs suppress the transcription of pro-inflammatory genes, such as cytokines (il-6) and chemokines (ccl2, ccl5). This success not only improved early the kidney function, as evidenced by decreased serum levels of BUN and creatinine in JQ1-NPs-treated mice, along with reduced tissue expression of the damage marker, NGAL, but also halted the production of extracellular matrix proteins (Fsp-1, Fn-1, α-SMA and Col1a1) and the fibrosis development. In summary, this work presents a promising nanotherapeutic strategy for AKI treatment and its progression and provides new insights into renal drug delivery.
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Affiliation(s)
- Maria Laura Saiz
- Translational Immunology, Health Research Institute of the Principality of Asturias (ISPA), Avenida de Roma S/N, Oviedo, Asturias 33011, Spain; ISCIII RICORS2040 Kidney Disease Research Network, Madrid, Spain
| | - Laura Lozano-Chamizo
- Nanobiotechnology for Life Sciences Laboratory, Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Universidad Complutense de Madrid (UCM), Plaza Ramón y Cajal s/n, Madrid E-28040, Spain; Microscopy and Dynamic Imaging Unit, Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Calle Melchor Fernández Almagro 3, Madrid E-28029, Spain; Atrys Health, Madrid E-28001, Spain
| | - Aida Bernardo Florez
- Translational Immunology, Health Research Institute of the Principality of Asturias (ISPA), Avenida de Roma S/N, Oviedo, Asturias 33011, Spain; ISCIII RICORS2040 Kidney Disease Research Network, Madrid, Spain
| | - Marzia Marciello
- Nanobiotechnology for Life Sciences Laboratory, Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Universidad Complutense de Madrid (UCM), Plaza Ramón y Cajal s/n, Madrid E-28040, Spain; Microscopy and Dynamic Imaging Unit, Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Calle Melchor Fernández Almagro 3, Madrid E-28029, Spain
| | - Paula Diaz-Bulnes
- Translational Immunology, Health Research Institute of the Principality of Asturias (ISPA), Avenida de Roma S/N, Oviedo, Asturias 33011, Spain; ISCIII RICORS2040 Kidney Disease Research Network, Madrid, Spain
| | - Viviana Corte-Iglesias
- Translational Immunology, Health Research Institute of the Principality of Asturias (ISPA), Avenida de Roma S/N, Oviedo, Asturias 33011, Spain; ISCIII RICORS2040 Kidney Disease Research Network, Madrid, Spain; Department of Immunology, Hospital Universitario Central de Asturias, Oviedo 33011, Spain
| | - Cristian Ruiz Bernet
- Translational Immunology, Health Research Institute of the Principality of Asturias (ISPA), Avenida de Roma S/N, Oviedo, Asturias 33011, Spain; ISCIII RICORS2040 Kidney Disease Research Network, Madrid, Spain
| | - Raul R Rodrigues-Diez
- Translational Immunology, Health Research Institute of the Principality of Asturias (ISPA), Avenida de Roma S/N, Oviedo, Asturias 33011, Spain; ISCIII RICORS2040 Kidney Disease Research Network, Madrid, Spain
| | - Cristina Martin-Martin
- Translational Immunology, Health Research Institute of the Principality of Asturias (ISPA), Avenida de Roma S/N, Oviedo, Asturias 33011, Spain; ISCIII RICORS2040 Kidney Disease Research Network, Madrid, Spain
| | - Mar Rodriguez-Santamaria
- Health Research Institute of the Principality of Asturias (ISPA), Avenida de Roma S/N, Oviedo, Asturias 33011, Spain
| | - Ivan Fernandez-Vega
- Department of Pathology, Hospital Universitario Central de Asturias, Oviedo 33001, Spain; Biobank of Principality of Asturias, Oviedo 33011, Spain
| | - Ramon M Rodriguez
- Lipids in Human Pathology, Institut d'Investigació Sanitària Illes Balears (IdISBa), Ctra. Valldemossa 79, Palma, Balearic Islands E-07120, Spain; Research Unit, University Hospital Son Espases, Ctra. Valldemossa79, Palma, Balearic Islands E-07120, Spain
| | - Carmen Diaz-Corte
- Translational Immunology, Health Research Institute of the Principality of Asturias (ISPA), Avenida de Roma S/N, Oviedo, Asturias 33011, Spain; Department of Nephrology, Hospital Universitario Central de Asturias, Oviedo 33001, Spain
| | - Beatriz Suarez-Alvarez
- Translational Immunology, Health Research Institute of the Principality of Asturias (ISPA), Avenida de Roma S/N, Oviedo, Asturias 33011, Spain; ISCIII RICORS2040 Kidney Disease Research Network, Madrid, Spain.
| | - Marco Filice
- Nanobiotechnology for Life Sciences Laboratory, Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Universidad Complutense de Madrid (UCM), Plaza Ramón y Cajal s/n, Madrid E-28040, Spain; Microscopy and Dynamic Imaging Unit, Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Calle Melchor Fernández Almagro 3, Madrid E-28029, Spain.
| | - Carlos Lopez-Larrea
- Translational Immunology, Health Research Institute of the Principality of Asturias (ISPA), Avenida de Roma S/N, Oviedo, Asturias 33011, Spain; ISCIII RICORS2040 Kidney Disease Research Network, Madrid, Spain; Department of Immunology, Hospital Universitario Central de Asturias, Oviedo 33011, Spain
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37
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Jacobs ME, de Vries DK, Engelse MA, Dumas SJ, Rabelink TJ. Endothelial to mesenchymal transition in kidney fibrosis. Nephrol Dial Transplant 2024; 39:752-760. [PMID: 37968135 DOI: 10.1093/ndt/gfad238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Indexed: 11/17/2023] Open
Abstract
Fibrotic diseases are characterized by the uncontrolled accumulation of extracellular matrix (ECM) components leading to disruption of tissue homeostasis. Myofibroblasts as the main ECM-producing cells can originate from various differentiated cell types after injury. Particularly, the process of endothelial-to-mesenchymal transition (endMT), describing phenotypic shifts of endothelial cells to adopt a fully mesenchymal identity, may contribute to the pool of myofibroblasts in fibrosis, while leading to capillary rarefaction and exacerbation of tissue hypoxia. In renal disease, incomplete recovery from acute kidney injury (AKI) and the ensuing fibrotic reaction stand out as major contributors to chronic kidney disease (CKD) development. While the focus has largely been on impaired tubular epithelial repair as a potential fibrosis-driving mechanism, alterations in the renal microcirculation post-AKI, and in particular endMT as a maladaptive response, could hold equal significance. Dysfunctional interplays among various cell types in the kidney microenvironment can instigate endMT. Transforming growth factor beta (TGF-β) signaling, with its downstream activation of canonical/Smad-mediated and non-canonical pathways, has been identified as primary driver of this process. However, non-TGF-β-mediated pathways involving inflammatory agents and metabolic shifts in intercellular communication within the tissue microenvironment can also trigger endMT. These harmful, maladaptive cell-cell interactions and signaling pathways offer potential targets for therapeutic intervention to impede endMT and decelerate fibrogenesis such as in AKI-CKD progression. Presently, partial reduction of TGF-β signaling using anti-diabetic drugs or statins may hold therapeutic potential in renal context. Nevertheless, further investigation is warranted to validate underlying mechanisms and assess positive effects within a clinical framework.
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Affiliation(s)
- Marleen E Jacobs
- Department of Internal Medicine (Nephrology) & The Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, The Netherlands
- The Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), Leiden University Medical Center, Leiden, The Netherlands
| | - Dorottya K de Vries
- Transplant Center, Leiden University Medical Center, Leiden, The Netherlands
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Marten A Engelse
- Department of Internal Medicine (Nephrology) & The Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, The Netherlands
- The Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), Leiden University Medical Center, Leiden, The Netherlands
| | - Sébastien J Dumas
- Department of Internal Medicine (Nephrology) & The Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, The Netherlands
- The Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), Leiden University Medical Center, Leiden, The Netherlands
| | - Ton J Rabelink
- Department of Internal Medicine (Nephrology) & The Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, The Netherlands
- The Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), Leiden University Medical Center, Leiden, The Netherlands
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38
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Moon D, Padanilam BJ, Park KM, Kim J. Loss of SAV1 in Kidney Proximal Tubule Induces Maladaptive Repair after Ischemia and Reperfusion Injury. Int J Mol Sci 2024; 25:4610. [PMID: 38731829 PMCID: PMC11083677 DOI: 10.3390/ijms25094610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/16/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
Kidney ischemia and reperfusion injury (IRI) is a significant contributor to acute kidney injury (AKI), characterized by tubular injury and kidney dysfunction. Salvador family WW domain containing protein 1 (SAV1) is a key component of the Hippo pathway and plays a crucial role in the regulation of organ size and tissue regeneration. However, whether SAV1 plays a role in kidney IRI is not investigated. In this study, we investigated the role of SAV1 in kidney injury and regeneration following IRI. A proximal tubule-specific knockout of SAV1 in kidneys (SAV1ptKO) was generated, and wild-type and SAV1ptKO mice underwent kidney IRI or sham operation. Plasma creatinine and blood urea nitrogen were measured to assess kidney function. Histological studies, including periodic acid-Schiff staining and immunohistochemistry, were conducted to assess tubular injury, SAV1 expression, and cell proliferation. Western blot analysis was employed to assess the Hippo pathway-related and proliferation-related proteins. SAV1 exhibited faint expression in the proximal tubules and was predominantly expressed in the connecting tubule to the collecting duct. At 48 h after IRI, SAV1ptKO mice continued to exhibit severe kidney dysfunction, compared to attenuated kidney dysfunction in wild-type mice. Consistent with the functional data, severe tubular damage induced by kidney IRI in the cortex was significantly decreased in wild-type mice at 48 h after IRI but not in SAV1ptKO mice. Furthermore, 48 h after IRI, the number of Ki67-positive cells in the cortex was significantly higher in wild-type mice than SAV1ptKO mice. After IRI, activation and expression of Hippo pathway-related proteins were enhanced, with no significant differences observed between wild-type and SAV1ptKO mice. Notably, at 48 h after IRI, protein kinase B activation (AKT) was significantly enhanced in SAV1ptKO mice compared to wild-type mice. This study demonstrates that SAV1 deficiency in the kidney proximal tubule worsens the injury and delays kidney regeneration after IRI, potentially through the overactivation of AKT.
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Affiliation(s)
- Daeun Moon
- Department of Anatomy, Jeju National University College of Medicine, Jeju 63243, Republic of Korea;
| | - Babu J. Padanilam
- Department of Urology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA;
| | - Kwon Moo Park
- Department of Anatomy, BK21 Plus, and Cardiovascular Research Institute, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea;
| | - Jinu Kim
- Department of Anatomy, Jeju National University College of Medicine, Jeju 63243, Republic of Korea;
- Interdisciplinary Graduate Program in Advanced Convergence Technology & Science, Jeju National University, Jeju 63243, Republic of Korea
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Yu C, Tang J, Yu J, Wang Y, Liu N, Dong Z, Zhuang S. JMJD3 activation contributes to renal protection and regeneration following acute kidney injury in mice. FASEB J 2024; 38:e23583. [PMID: 38551634 DOI: 10.1096/fj.202300681r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 03/04/2024] [Accepted: 03/18/2024] [Indexed: 04/02/2024]
Abstract
We have recently demonstrated that Jumonji domain-containing protein D3 (JMJD3), a histone demethylase of histone H3 on lysine 27 (H3K27me3), is protective against renal fibrosis, but its role in acute kidney injury (AKI) remains unexplored. Here, we report that JMJD3 activity is required for renal protection and regeneration in murine models of AKI induced by ischemia/reperfusion (I/R) and folic acid (FA). Injury to the kidney upregulated JMJD3 expression and induced expression of H3K27me3, which was coincident with renal dysfunction, renal tubular cell injury/apoptosis, and proliferation. Blocking JMJD3 activity by GSKJ4 led to worsening renal dysfunction and pathological changes by aggravating tubular epithelial cell injury and apoptosis in both murine models of AKI. JMJD3 inhibition by GSKJ4 also reduced renal tubular cell proliferation and suppressed expression of cyclin E and phosphorylation of CDK2, but increased p21 expression in the injured kidney. Furthermore, inactivation of JMJD3 enhanced I/R- or FA-induced expression of TGF-β1, vimentin, and Snail, phosphorylation of Smad3, STAT3, and NF-κB, and increased renal infiltration by F4/80 (+) macrophages. Finally, GSKJ4 treatment caused further downregulation of Klotho, BMP-7, Smad7, and E-cadherin, all of which are associated with renal protection and have anti-fibrotic effects. Therefore, these data provide strong evidence that JMJD3 activation contributes to renal tubular epithelial cell survival and regeneration after AKI.
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Affiliation(s)
- Chao Yu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jinhua Tang
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jianjun Yu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yanjin Wang
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Na Liu
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zheng Dong
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Shougang Zhuang
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Medicine, Rhode Island Hospital and Alpert Medical School, Brown University, Providence, Rhode Island, USA
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40
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Martínez-Rojas MÁ, Balcázar H, Ponce-Nava MS, González-Soria I, Marquina-Castillo B, Pérez-Villalva R, Bobadilla NA. A short treatment with resveratrol after a renal ischaemia-reperfusion injury prevents maladaptive repair and long-term chronic kidney disease in rats. J Physiol 2024; 602:1835-1852. [PMID: 38529522 DOI: 10.1113/jp285979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 03/13/2024] [Indexed: 03/27/2024] Open
Abstract
Acute kidney injury (AKI) often triggers physiological processes aimed at restoring renal function and architecture. However, this response can become maladaptive, leading to nephron loss and fibrosis. Although the therapeutic effects of resveratrol (RSV) are well established, its impact after AKI and for subsequent chronic kidney disease (CKD) remains unclear. This study assessed whether transient administration of RSV following ischaemia-reperfusion injury (IRI) could prevent the progression to CKD. Forty-one male Wistar rats were assigned randomly to sham surgery, bilateral renal ischaemia for 30 min (IR) or IR+RSV. The RSV treatment commenced 24 h after IRI and continued for 10 days. The rats were studied for either 10 days or 5 months, after which kidney function and structure were evaluated. Mitochondrial homeostasis, oxidant defence and renal inflammation state were also evaluated. Despite having the same severity of AKI, rats receiving RSV for 10 days after IRI exhibited significant improvement in kidney histological injury and reduced inflammation, although renal haemodynamic recovery was less pronounced. Resveratrol effectively prevented the elevation of tubular injury-related molecules and profibrotic signalling with reduced myofibroblast proliferation. Furthermore, RSV substantially improved the antioxidant response and mitochondrial homeostasis. After 5 months, RSV prevented the transition to CKD, as evidenced by the prevention of progressive proteinuria, renal dysfunction and tubulointerstitial fibrosis. This study demonstrates that a brief treatment with RSV following IRI is enough to prevent maladaptive repair and the development of CKD. Our findings highlight the importance of the early days of reperfusion, indicating that maladaptive responses can be reduced effectively following severe AKI. KEY POINTS: Physiological processes activated after acute kidney injury (AKI) can lead to maladaptive responses, causing nephron loss and fibrosis. Prophylactic renoprotection with resveratrol (RSV) has been described in experimental AKI, but its impact after AKI and for subsequent chronic kidney disease (CKD) remains unclear. In this study, we found that histological tubular injury persists 10 days after ischaemia-reperfusion injury and contributes to a failed repair phenotype in proximal tubular cells. Short-term RSV intervention influenced the post-ischaemic repair response and accelerated tubular recovery by reducing oxidative stress and mitochondrial damage. Furthermore, RSV targeted inflammation and profibrotic signalling during the maladaptive response, normalizing both processes. Resveratrol effectively prevented AKI-to-CKD transition even 5 months after the intervention. The study serves as a proof of concept, proposing RSV as a valuable candidate for further translational clinical studies to mitigate AKI-to-CKD transition.
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Affiliation(s)
- Miguel Ángel Martínez-Rojas
- Molecular Physiology Unit, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Hiram Balcázar
- Molecular Physiology Unit, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - María Susana Ponce-Nava
- Molecular Physiology Unit, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Isaac González-Soria
- Molecular Physiology Unit, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Brenda Marquina-Castillo
- Department of Experimental Pathology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Rosalba Pérez-Villalva
- Molecular Physiology Unit, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Norma A Bobadilla
- Molecular Physiology Unit, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
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Li M, Robles-Planells C, Liu D, Graves SA, Vasquez-Martinez G, Mayoral-Andrade G, Lee D, Rastogi P, Marks BM, Sagastume EA, Weiss RM, Linn-Peirano SC, Johnson FL, Schultz MK, Zepeda-Orozco D. Pre-clinical evaluation of biomarkers for the early detection of nephrotoxicity following alpha-particle radioligand therapy. Eur J Nucl Med Mol Imaging 2024; 51:1395-1408. [PMID: 38095674 PMCID: PMC10957612 DOI: 10.1007/s00259-023-06559-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 12/01/2023] [Indexed: 12/26/2023]
Abstract
PURPOSE Cancer treatment with alpha-emitter-based radioligand therapies (α-RLTs) demonstrates promising tumor responses. Radiolabeled peptides are filtered through glomeruli, followed by potential reabsorption of a fraction by proximal tubules, which may cause acute kidney injury (AKI) and chronic kidney disease (CKD). Because tubular cells are considered the primary site of radiopeptides' renal reabsorption and potential injury, the current use of kidney biomarkers of glomerular functional loss limits the evaluation of possible nephrotoxicity and its early detection. This study aimed to investigate whether urinary secretion of tubular injury biomarkers could be used as an additional non-invasive sensitive diagnostic tool to identify unrecognizable tubular damage and risk of long-term α-RLT nephrotoxicity. METHODS A bifunctional cyclic peptide, melanocortin 1 ligand (MC1L), labeled with [203Pb]Pb-MC1L, was used for [212Pb]Pb-MC1L biodistribution and absorbed dose measurements in CD-1 Elite mice. Mice were treated with [212Pb]Pb-MC1L in a dose-escalation study up to levels of radioactivity intended to induce kidney injury. The approach enabled prospective kidney functional and injury biomarker evaluation and late kidney histological analysis to validate these biomarkers. RESULTS Biodistribution analysis identified [212Pb]Pb-MC1L reabsorption in kidneys with a dose deposition of 2.8, 8.9, and 20 Gy for 0.9, 3.0, and 6.7 MBq injected [212Pb]Pb-MC1L doses, respectively. As expected, mice receiving 6.7 MBq had significant weight loss and CKD evidence based on serum creatinine, cystatin C, and kidney histological alterations 28 weeks after treatment. A dose-dependent urinary neutrophil gelatinase-associated lipocalin (NGAL, tubular injury biomarker) urinary excretion the day after [212Pb]Pb-MC1L treatment highly correlated with the severity of late tubulointerstitial injury and histological findings. CONCLUSION Urine NGAL secretion could be a potential early diagnostic tool to identify unrecognized tubular damage and predict long-term α-RLT-related nephrotoxicity.
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Affiliation(s)
- Mengshi Li
- Viewpoint Molecular Targeting, Inc. Dba Perspective Therapeutics, Coralville, IA, USA
| | - Claudia Robles-Planells
- Kidney and Urinary Tract Center, Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH, USA
| | - Dijie Liu
- Viewpoint Molecular Targeting, Inc. Dba Perspective Therapeutics, Coralville, IA, USA
| | - Stephen A Graves
- Department of Radiology, The University of Iowa, Iowa City, IA, USA
| | - Gabriela Vasquez-Martinez
- Kidney and Urinary Tract Center, Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH, USA
| | - Gabriel Mayoral-Andrade
- Kidney and Urinary Tract Center, Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH, USA
| | - Dongyoul Lee
- Department of Physics and Chemistry, Korea Military Academy, Seoul, Republic of Korea
| | - Prerna Rastogi
- Department of Pathology, The University of Iowa, Iowa City, IA, USA
| | - Brenna M Marks
- Viewpoint Molecular Targeting, Inc. Dba Perspective Therapeutics, Coralville, IA, USA
| | - Edwin A Sagastume
- Viewpoint Molecular Targeting, Inc. Dba Perspective Therapeutics, Coralville, IA, USA
| | - Robert M Weiss
- Department of Internal Medicine, The University of Iowa, Iowa City, IA, USA
| | - Sarah C Linn-Peirano
- Kidney and Urinary Tract Center, Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH, USA
- Department of Veterinary Biosciences, The Ohio State University College of Veterinary Medicine Columbus, Columbus, OH, USA
| | - Frances L Johnson
- Viewpoint Molecular Targeting, Inc. Dba Perspective Therapeutics, Coralville, IA, USA
| | - Michael K Schultz
- Viewpoint Molecular Targeting, Inc. Dba Perspective Therapeutics, Coralville, IA, USA.
- Department of Radiology, The University of Iowa, Iowa City, IA, USA.
- Department of Radiation Oncology, Free Radical, and Radiation Biology Program, The University of Iowa, Iowa City, IA, USA.
| | - Diana Zepeda-Orozco
- Kidney and Urinary Tract Center, Abigail Wexner Research Institute at Nationwide Children's, Columbus, OH, USA.
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA.
- Division of Nephrology and Hypertension, Nationwide Children's Hospital, Columbus, OH, USA.
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42
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Nesovic Ostojic J, Kovacevic S, Ivanov M, Brkic P, Zivotic M, Mihailovic-Stanojevic N, Karanovic D, Vajic UJ, Jeremic R, Jovovic D, Miloradovic Z. Hyperbaric Oxygen Reduces Oxidative Stress Impairment and DNA Damage and Simultaneously Increases HIF-1α in Ischemia-Reperfusion Acute Kidney Injury. Int J Mol Sci 2024; 25:3870. [PMID: 38612680 PMCID: PMC11011961 DOI: 10.3390/ijms25073870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
The central exacerbating factor in the pathophysiology of ischemic-reperfusion acute kidney injury (AKI) is oxidative stress. Lipid peroxidation and DNA damage in ischemia are accompanied by the formation of 3-nitrotyrosine, a biomarker for oxidative damage. DNA double-strand breaks (DSBs) may also be a result of postischemic AKI. γH2AX(S139) histone has been identified as a potentially useful biomarker of DNA DSBs. On the other hand, hypoxia-inducible factor (HIF) is the "master switch" for hypoxic adaptation in cells and tissues. The aim of this research was to evaluate the influence of hyperbaric oxygen (HBO) preconditioning on antioxidant capacity estimated by FRAP (ferric reducing antioxidant power) and ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)) assay, as well as on oxidative stress parameter 3-nitrotyrosine, and to assess its effects on γH2AX(S139), HIF-1α, and nuclear factor-κB (NF-κB) expression, in an experimental model of postischemic AKI induced in spontaneously hypertensive rats. The animals were divided randomly into three experimental groups: sham-operated rats (SHAM, n = 6), rats with induced postischemic AKI (AKI, n = 6), and group exposed to HBO preconditioning before AKI induction (AKI + HBO, n = 6). A significant improvement in the estimated glomerular filtration rate, eGFR, in AKI + HBO group (p < 0.05 vs. AKI group) was accompanied with a significant increase in plasma antioxidant capacity estimated by FRAP (p < 0.05 vs. SHAM group) and a reduced immunohistochemical expression of 3-nitrotyrosine and γH2AX(S139). Also, HBO pretreatment significantly increased HIF-1α expression (p < 0.001 vs. AKI group), estimated by Western blot and immunohistochemical analysis in kidney tissue, and decreased immunohistochemical NF-κB renal expression (p < 0.01). Taking all of these results together, we may conclude that HBO preconditioning has beneficial effects on acute kidney injury induced in spontaneously hypertensive rats.
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Affiliation(s)
- Jelena Nesovic Ostojic
- Department of Pathological Physiology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Sanjin Kovacevic
- Department of Pathological Physiology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Milan Ivanov
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
| | - Predrag Brkic
- Department of Medical Physiology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (P.B.); (R.J.)
| | - Maja Zivotic
- Institute of Pathology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | - Nevena Mihailovic-Stanojevic
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
| | - Danijela Karanovic
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
| | - Una Jovana Vajic
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
| | - Rada Jeremic
- Department of Medical Physiology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (P.B.); (R.J.)
| | - Djurdjica Jovovic
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
| | - Zoran Miloradovic
- Department of Cardiovascular Physiology, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia; (M.I.); (N.M.-S.); (D.K.); (U.J.V.); (D.J.); (Z.M.)
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43
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Myszczyszyn A, Popp O, Kunz S, Sporbert A, Jung S, Penning LC, Fendler A, Mertins P, Birchmeier W. Mice with renal-specific alterations of stem cell-associated signaling develop symptoms of chronic kidney disease but surprisingly no tumors. PLoS One 2024; 19:e0282938. [PMID: 38512983 PMCID: PMC10957084 DOI: 10.1371/journal.pone.0282938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 01/13/2024] [Indexed: 03/23/2024] Open
Abstract
Previously, we found that Wnt and Notch signaling govern stem cells of clear cell kidney cancer (ccRCC) in patients. To mimic stem cell responses in the normal kidney in vitro in a marker-unbiased fashion, we have established tubular organoids (tubuloids) from total single adult mouse kidney epithelial cells in Matrigel and serum-free conditions. Deep proteomic and phosphoproteomic analyses revealed that tubuloids resembled renewal of adult kidney tubular epithelia, since tubuloid cells displayed activity of Wnt and Notch signaling, long-term proliferation and expression of markers of proximal and distal nephron lineages. In our wish to model stem cell-derived human ccRCC, we have generated two types of genetic double kidney mutants in mice: Wnt-β-catenin-GOF together with Notch-GOF and Wnt-β-catenin-GOF together with a most common alteration in ccRCC, Vhl-LOF. An inducible Pax8-rtTA-LC1-Cre was used to drive recombination specifically in adult kidney epithelial cells. We confirmed mutagenesis of β-catenin, Notch and Vhl alleles on DNA, protein and mRNA target gene levels. Surprisingly, we observed symptoms of chronic kidney disease (CKD) in mutant mice, but no increased proliferation and tumorigenesis. Thus, the responses of kidney stem cells in the tubuloid and genetic systems produced different phenotypes, i.e. enhanced renewal versus CKD.
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Affiliation(s)
- Adam Myszczyszyn
- Cancer Research Program, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Oliver Popp
- Proteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Severine Kunz
- Electron Microscopy, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Anje Sporbert
- Advanced Light Microscopy, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Simone Jung
- Cancer Research Program, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Louis C. Penning
- Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Annika Fendler
- Cancer Research Program, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Philipp Mertins
- Proteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Walter Birchmeier
- Cancer Research Program, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
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44
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Lu J, Sun W, Liu B, Zhang J, Wang R, Goltzman D, Miao D. Chk2 Modulates Bmi1-Deficiency-Induced Renal Aging and Fibrosis via Oxidative Stress, DNA Damage, and p53/TGFβ1-Induced Epithelial-Mesenchymal Transition. Int J Biol Sci 2024; 20:2008-2026. [PMID: 38617548 PMCID: PMC11008269 DOI: 10.7150/ijbs.93598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 03/03/2024] [Indexed: 04/16/2024] Open
Abstract
Renal aging may lead to fibrosis and dysfunction, yet underlying mechanisms remain unclear. We explored whether deficiency of the Polycomb protein Bmi1 causes renal aging via DNA damage response (DDR) activation, inducing renal tubular epithelial cell (RTEC) senescence and epithelial-mesenchymal transition (EMT). Bmi1 knockout mice exhibited oxidative stress, DDR activation, RTEC senescence, senescence-associated secretory phenotype (SASP), and age-related fibrosis in kidneys. Bmi1 deficiency impaired renal structure and function, increasing serum creatinine/urea, reducing creatinine clearance, and decreasing cortical thickness and glomerular number. However, knockout of the serine-threonine kinase Chk2 alleviated these aging phenotypes. Transcriptomics identified transforming growth factor beta 1 (TGFβ1) upregulation in Bmi1-deficient RTECs, but TGFβ1 was downregulated upon Chk2 knockout. The tumor suppressor protein p53 transcriptionally activated TGFβ1, promoting EMT in RTECs. Bmi1 knockout or oxidative stress (induced with H2O2) increased TGFβ1 expression, and EMT in RTECs and was partly reversed by p53 inhibition. Together, Bmi1 deficiency causes oxidative stress and DDR-mediated RTEC senescence/SASP, thus activating p53 and TGFβ1 to induce EMT and age-related fibrosis. However, blocking DDR (via Chk2 knockout) or p53 ameliorates these changes. Our study reveals mechanisms whereby Bmi1 preserves renal structure and function during aging by suppressing DDR and p53/TGFβ1-mediated EMT. These pathways represent potential targets for detecting and attenuating age-related renal decline.
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Affiliation(s)
- Jinhong Lu
- The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Weiwei Sun
- The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Boyang Liu
- The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Jinge Zhang
- The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Rong Wang
- The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - David Goltzman
- Calcium Research Laboratory, McGill University Health Centre and Department of Medicine, McGill University, Montreal, Quebec H4A 3J1, Canada
| | - Dengshun Miao
- The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China
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45
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Song J, Yu W, Chen S, Huang J, Zhou C, Liang H. Remimazolam attenuates inflammation and kidney fibrosis following folic acid injury. Eur J Pharmacol 2024; 966:176342. [PMID: 38290569 DOI: 10.1016/j.ejphar.2024.176342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 01/11/2024] [Accepted: 01/17/2024] [Indexed: 02/01/2024]
Abstract
The transition of acute kidney injury (AKI) to chronic kidney disease (CKD) is characterized by intense inflammation and progressive fibrosis. Remimazolam is widely used for procedural sedation in intensive care units, such as AKI patients. Remimazolam has been shown to possess anti-inflammatory and organ-protective properties. However, the role of remimazolam in inflammation and renal fibrosis following AKI remains unclear. Here, we explored the effects of remimazolam on the inflammatory response and kidney fibrogenesis of mice subjected to folic acid (FA) injury. Our results showed that remimazolam treatment alleviated kidney damage and dysfunction. Mice treated with remimazolam presented less collagen deposition in FA-injured kidneys compared with FA controls, which was accompanied by a reduction of extracellular matrix proteins accumulation and fibroblasts activation. Furthermore, remimazolam treatment reduced inflammatory cells infiltration into the kidneys of mice with FA injury and inhibited proinflammatory or profibrotic molecules expression. Finally, remimazolam treatment impaired the activation of bone marrow-derived fibroblasts and blunted the transformation of macrophages to myofibroblasts in FA nephropathy. Additionally, the benzodiazepine receptor antagonist PK-11195 partially reversed the protective effect of remimazolam on the FA-injured kidneys. Overall, remimazolam attenuates the inflammatory response and renal fibrosis development following FA-induced AKI, which may be related to the peripheral benzodiazepine receptor pathway.
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Affiliation(s)
- Jinfang Song
- Department of Anesthesiology, Foshan Women and Children Hospital, Foshan, 528000, China; Zhuhai Campus, Zunyi Medical University, Zhuhai, 519041, China.
| | - Wenqiang Yu
- Department of Anesthesiology, Foshan Women and Children Hospital, Foshan, 528000, China.
| | - Shuangquan Chen
- Department of Anesthesiology, Foshan Women and Children Hospital, Foshan, 528000, China.
| | - Jiamin Huang
- Department of Anesthesiology, Foshan Women and Children Hospital, Foshan, 528000, China.
| | - Chujun Zhou
- Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China.
| | - Hua Liang
- Department of Anesthesiology, Foshan Women and Children Hospital, Foshan, 528000, China.
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Chou YH, Pan SY, Shih HM, Lin SL. Update of pericytes function and their roles in kidney diseases. J Formos Med Assoc 2024; 123:307-317. [PMID: 37586973 DOI: 10.1016/j.jfma.2023.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 08/01/2023] [Indexed: 08/18/2023] Open
Abstract
Studies have highlighted the significant involvement of kidney pericytes in renal fibrosis. Kidney pericytes, classified as interstitial mesenchymal cells, are extensively branched, collagen-producing cells that closely interact with endothelial cells. This article aims to provide an overview of the recent advancements in understanding the physiological functions of pericytes and their roles in kidney diseases. In a healthy kidney, pericytes have essential physiological function in angiogenesis, erythropoietin (EPO) production, and the regulation of renal blood flow. Nevertheless, pericyte-myofibroblast transition has been identified as the primary cause of disease progression in acute kidney injury (AKI)-to-chronic kidney disease (CKD) continuum. Our recent research has demonstrated that hypoxia-inducible factor-2α (HIF-2α) regulates erythropoietin production in pericytes. However, this production is repressed by EPO gene hypermethylation and HIF-2α downregulation which were induced by transforming growth factor-β1-activated DNA methyltransferase and activin receptor-like kinase-5 signaling pathway during renal fibrosis, respectively. Additionally, AKI induces epigenetic modifications in pericytes, rendering them more prone to extracellular matrix production, cell migration and proliferation, thereby contributing to subsequent capillary rarefaction and renal fibrosis. Further investigation into the specific functions and roles of different subpopulations of pericytes may contribute for the development of targeted therapies aimed at attenuating kidney disease and mitigating their adverse effects.
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Affiliation(s)
- Yu-Hsiang Chou
- Renal Division, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Szu-Yu Pan
- Renal Division, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan; Department of Integrated Diagnostics and Therapeutics, National Taiwan University Hospital, Taipei, Taiwan
| | - Hong-Mou Shih
- Division of Nephrology, Department of Internal Medicine, MacKay Memorial Hospital, Taipei, Taiwan
| | - Shuei-Liong Lin
- Renal Division, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan; Graduate Institute of Physiology, College of Medicine, National Taiwan University, Taipei, Taiwan; Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan.
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47
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Liu J, Livingston MJ, Dong G, Wei Q, Zhang M, Mei S, Zhu J, Zhang C, Dong Z. HIF-1 contributes to autophagy activation via BNIP3 to facilitate renal fibrosis in hypoxia in vitro and UUO in vivo. Am J Physiol Cell Physiol 2024; 326:C935-C947. [PMID: 38284121 PMCID: PMC11193486 DOI: 10.1152/ajpcell.00458.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 01/19/2024] [Accepted: 01/19/2024] [Indexed: 01/30/2024]
Abstract
The molecular basis of renal interstitial fibrosis, a major pathological feature of progressive kidney diseases, remains poorly understood. Autophagy has been implicated in renal fibrosis, but whether it promotes or inhibits fibrosis remains controversial. Moreover, it is unclear how autophagy is activated and sustained in renal fibrosis. The present study was designed to address these questions using the in vivo mouse model of unilateral ureteral obstruction and the in vitro model of hypoxia in renal tubular cells. Both models showed the activation of hypoxia-inducible factor-1 (HIF-1) and autophagy along with fibrotic changes. Inhibition of autophagy with chloroquine reduced renal fibrosis in unilateral ureteral obstruction model, whereas chloroquine and autophagy-related gene 7 knockdown decreased fibrotic changes in cultured renal proximal tubular cells, supporting a profibrotic role of autophagy. Notably, pharmacological and genetic inhibition of HIF-1 led to the suppression of autophagy and renal fibrosis in these models. Mechanistically, knock down of BCL2 and adenovirus E1B 19-kDa-interacting protein 3 (BNIP3), a downstream target gene of HIF, decreased autophagy and fibrotic changes during hypoxia in BUMPT cells. Together, these results suggest that HIF-1 may activate autophagy via BNIP3 in renal tubular cells to facilitate the development of renal interstitial fibrosis.NEW & NOTEWORTHY Autophagy has been reported to participate in renal fibrosis, but its role and underlying activation mechanism is unclear. In this study, we report the role of HIF-1 in autophagy activation in models of renal fibrosis and further investigate the underlying mechanism.
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Affiliation(s)
- Jing Liu
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, Georgia, United States
| | - Man J Livingston
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, Georgia, United States
| | - Guie Dong
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, Georgia, United States
| | - Qingqing Wei
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, Georgia, United States
| | - Ming Zhang
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, Georgia, United States
| | - Shuqin Mei
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, Georgia, United States
- Department of Nephrology, Second Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Jiefu Zhu
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zheng Dong
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, Georgia, United States
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48
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Sutherland SM, Alobaidi R, Gorga SM, Iyengar A, Morgan C, Heydari E, Arikan AAA, Basu RK, Goldstein SL, Zappitelli M. Epidemiology of acute kidney injury in children: a report from the 26th Acute Disease Quality Initiative (ADQI) consensus conference. Pediatr Nephrol 2024; 39:919-928. [PMID: 37874357 PMCID: PMC10817829 DOI: 10.1007/s00467-023-06164-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/01/2023] [Accepted: 09/01/2023] [Indexed: 10/25/2023]
Abstract
The nephrology and critical care communities have seen an increase in studies exploring acute kidney injury (AKI) epidemiology in children. As a result, we now know that AKI is highly prevalent in critically ill neonates, children, and young adults. Furthermore, children who develop AKI experience greater morbidity and higher mortality. Yet knowledge gaps still exist that suggest a more comprehensive understanding of AKI will form the foundation for future efforts designed to improve outcomes. In particular, the areas of community acquired AKI, AKI in non-critically ill children, and cohorts from low-middle income countries have not been well studied. Longer-term functional outcomes and patient-centric metrics including social determinants of health, quality of life, and healthcare utilization should be the foci of the next phase of scholarship. Current definitions identify AKI-based upon evidence of dysfunction which serves as a proxy for injury; biomarkers capable of identifying injury as it occurs are likely to more accurately define populations with AKI. Despite the strength of the association, the causal and mechanistic relationships between AKI and poorer outcomes remain inadequately examined. A more robust understanding of the relationship represents a potential to identify therapeutic targets. Once established, a more comprehensive understanding of AKI epidemiology in children will allow investigation of preventive, therapeutic, and quality improvement interventions more effectively.
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Affiliation(s)
- Scott M Sutherland
- Department of Pediatrics, Division of Nephrology, Center for Academic Medicine, Stanford University School of Medicine, Palo Alto, CA, USA.
| | - Rashid Alobaidi
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - Stephen M Gorga
- Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Arpana Iyengar
- Department of Paediatric Nephrology, St. John's National Academy of Health Sciences, Bangalore, India
| | - Catherine Morgan
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - Emma Heydari
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - A Ayse Akcan Arikan
- Department of Pediatrics, Section of Critical Care Medicine, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Raj K Basu
- Department of Pediatrics, Northwestern University, Chicago, IL, USA
| | - Stuart L Goldstein
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Michael Zappitelli
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada.
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49
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Martínez-Rojas MÁ, Balcázar H, González-Soria I, González-Rivera JM, Rodríguez-Vergara ME, Velazquez-Villegas LA, León-Contreras JC, Pérez-Villalva R, Correa F, Rosetti F, Bobadilla NA. Transient inhibition of sodium-glucose cotransporter 2 after ischemia/reperfusion injury ameliorates chronic kidney disease. JCI Insight 2024; 9:e173675. [PMID: 38516890 PMCID: PMC11063941 DOI: 10.1172/jci.insight.173675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 02/08/2024] [Indexed: 03/23/2024] Open
Abstract
Sodium-glucose cotransporter 2 (SGLT2) inhibitor, dapagliflozin (Dapa), exhibited nephroprotective effects in patients with chronic kidney disease (CKD). We assessed the efficacy of short-term Dapa administration following acute kidney injury (AKI) in preventing CKD. Male Wistar rats were randomly assigned to Sham surgery, bilateral ischemia for 30 minutes (abbreviated as IR), and IR + Dapa groups. Daily treatment with Dapa was initiated just 24 hours after IR and maintained for only 10 days. Initially, rats were euthanized at this point to study early renal repair. After severe AKI, Dapa promptly restored creatinine clearance (CrCl) and significantly reduced renal vascular resistance compared with the IR group. Furthermore, Dapa effectively reversed the mitochondrial abnormalities, including increased fission, altered mitophagy, metabolic dysfunction, and proapoptotic signaling. To study this earlier, another set of rats was studied just 5 days after AKI. Despite persistent renal dysfunction, our data reveal a degree of mitochondrial protection. Remarkably, a 10-day treatment with Dapa demonstrated effectiveness in preventing CKD transition in an independent cohort monitored for 5 months after AKI. This was evidenced by improvements in proteinuria, CrCl, glomerulosclerosis, and fibrosis. Our findings underscore the potential of Dapa in preventing maladaptive repair following AKI, emphasizing the crucial role of early intervention in mitigating AKI long-term consequences.
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Affiliation(s)
- Miguel Ángel Martínez-Rojas
- Unidad de Fisiología Molecular, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Departmento de Nefrología y Metabolismo Mineral
| | - Hiram Balcázar
- Unidad de Fisiología Molecular, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Departmento de Nefrología y Metabolismo Mineral
| | - Isaac González-Soria
- Unidad de Fisiología Molecular, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Departmento de Nefrología y Metabolismo Mineral
| | - Jesús Manuel González-Rivera
- Unidad de Fisiología Molecular, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Departmento de Nefrología y Metabolismo Mineral
| | - Mauricio E. Rodríguez-Vergara
- Unidad de Fisiología Molecular, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Departmento de Nefrología y Metabolismo Mineral
| | | | - Juan Carlos León-Contreras
- Departmento de Patología Experimental, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Rosalba Pérez-Villalva
- Unidad de Fisiología Molecular, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Departmento de Nefrología y Metabolismo Mineral
| | - Francisco Correa
- Departmento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | - Florencia Rosetti
- Departmento de Inmunología y Reumatología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Norma A. Bobadilla
- Unidad de Fisiología Molecular, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Departmento de Nefrología y Metabolismo Mineral
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50
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Chen J, Zhang H, Yi X, Dou Q, Yang X, He Y, Chen J, Chen K. Cellular senescence of renal tubular epithelial cells in acute kidney injury. Cell Death Discov 2024; 10:62. [PMID: 38316761 PMCID: PMC10844256 DOI: 10.1038/s41420-024-01831-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 01/14/2024] [Accepted: 01/24/2024] [Indexed: 02/07/2024] Open
Abstract
Cellular senescence represents an irreversible state of cell-cycle arrest during which cells secrete senescence-associated secretory phenotypes, including inflammatory factors and chemokines. Additionally, these cells exhibit an apoptotic resistance phenotype. Cellular senescence serves a pivotal role not only in embryonic development, tissue regeneration, and tumor suppression but also in the pathogenesis of age-related degenerative diseases, malignancies, metabolic diseases, and kidney diseases. The senescence of renal tubular epithelial cells (RTEC) constitutes a critical cellular event in the progression of acute kidney injury (AKI). RTEC senescence inhibits renal regeneration and repair processes and, concurrently, promotes the transition of AKI to chronic kidney disease via the senescence-associated secretory phenotype. The mechanisms underlying cellular senescence are multifaceted and include telomere shortening or damage, DNA damage, mitochondrial autophagy deficiency, cellular metabolic disorders, endoplasmic reticulum stress, and epigenetic regulation. Strategies aimed at inhibiting RTEC senescence, targeting the clearance of senescent RTEC, or promoting the apoptosis of senescent RTEC hold promise for enhancing the renal prognosis of AKI. This review primarily focuses on the characteristics and mechanisms of RTEC senescence, and the impact of intervening RTEC senescence on the prognosis of AKI, aiming to provide a foundation for understanding the pathogenesis and providing potentially effective approaches for AKI treatment.
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Affiliation(s)
- Juan Chen
- Department of Nephrology, Daping Hospital, Army Medical University, 400042, Chongqing, China
| | - Huhai Zhang
- Department of Nephrology, Southwest Hospital, Army Medical University, 400042, Chongqing, China
| | - Xiangling Yi
- Department of Nephrology, Daping Hospital, Army Medical University, 400042, Chongqing, China
| | - Qian Dou
- Department of Nephrology, Daping Hospital, Army Medical University, 400042, Chongqing, China
| | - Xin Yang
- Department of Nephrology, Daping Hospital, Army Medical University, 400042, Chongqing, China
| | - Yani He
- Department of Nephrology, Daping Hospital, Army Medical University, 400042, Chongqing, China
| | - Jia Chen
- Department of Nephrology, Daping Hospital, Army Medical University, 400042, Chongqing, China.
| | - Kehong Chen
- Department of Nephrology, Daping Hospital, Army Medical University, 400042, Chongqing, China.
- State Key Laboratory of Trauma, Burn and Combined Injury, Army Medical University, Chongqing, China.
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