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Meng P, Huang J, Ling X, Zhou S, Wei J, Zhu M, Miao J, Shen W, Li J, Ye H, Niu H, Zhang Y, Zhou L. CXC Chemokine Receptor 2 Accelerates Tubular Cell Senescence and Renal Fibrosis via β-Catenin-Induced Mitochondrial Dysfunction. Front Cell Dev Biol 2022; 10:862675. [PMID: 35592244 PMCID: PMC9110966 DOI: 10.3389/fcell.2022.862675] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 04/14/2022] [Indexed: 01/10/2023] Open
Abstract
Renal fibrosis is a common feature of various chronic kidney diseases (CKD). However, its underlying mechanism has not been totally clarified. C-X-C motif chemokine receptor (CXCR) family plays a role in renal fibrosis, however, detailed mechanisms have not been elucidated. Here, we report that CXCR2 has a potential role in tubular cell senescence and renal fibrosis, and is associated with β-catenin-activated mitochondrial dysfunction. CXCR2 is one of most increased members among CXCR family in unilateral ureteral obstruction (UUO) mice. CXCR2 was expressed primarily in tubules and co-localized with p16INK4A, a cellular senescence marker, and β-catenin. Administration of SB225002, a selective CXCR2 antagonist, significantly inhibited the activation of β-catenin signaling, restored mitochondrial function, protected against tubular cell senescence and renal fibrosis in unilateral ureteral obstruction (UUO) mice. In unilateral ischemia-reperfusion injury (UIRI) mice, treatment with interlukin-8 (IL-8), the ligand of CXCR2, further aggravated β-catenin activation, mitochondrial dysfunction, tubular cell senescence and renal fibrosis, whereas knockdown of p16INK4A inhibited IL-8-induced these effects. In vitro, SB225002 inhibited mitochondrial dysfunction and tubular cell senescence. Furthermore, ICG-001, a β-catenin signaling blocker, significantly retarded CXCR2-induced cellular senescence and fibrotic changes. These results suggest that CXCR2 promotes tubular cell senescence and renal fibrosis through inducing β-catenin-activated mitochondrial dysfunction.
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Affiliation(s)
- Ping Meng
- Division of Nephrology, Nanfang Hospital, National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China
- Department of Central Laboratory, Huadu District People’s Hospital, Southern Medical University, Guangzhou, China
| | - Jiewu Huang
- Division of Nephrology, Nanfang Hospital, National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China
| | - Xian Ling
- Division of Nephrology, Nanfang Hospital, National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China
| | - Shan Zhou
- Division of Nephrology, Nanfang Hospital, National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China
| | - Jingyan Wei
- Special Medical Service Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Mingsheng Zhu
- Department of Nephrology, The People’s Hospital of Gaozhou, Maoming, China
| | - Jinhua Miao
- Division of Nephrology, Nanfang Hospital, National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China
| | - Weiwei Shen
- Division of Nephrology, Nanfang Hospital, National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China
| | - Jiemei Li
- Division of Nephrology, Nanfang Hospital, National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China
| | - Huiyun Ye
- Division of Nephrology, Nanfang Hospital, National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China
| | - Hongxin Niu
- Special Medical Service Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
- *Correspondence: Lili Zhou, ; Yunfang Zhang, ; Hongxin Niu,
| | - Yunfang Zhang
- Department of Nephrology, Huadu District People’s Hospital, Southern Medical University, Guangzhou, China
- *Correspondence: Lili Zhou, ; Yunfang Zhang, ; Hongxin Niu,
| | - Lili Zhou
- Division of Nephrology, Nanfang Hospital, National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China
- *Correspondence: Lili Zhou, ; Yunfang Zhang, ; Hongxin Niu,
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