The Journal of Practical Medicine ›› 2024, Vol. 40 ›› Issue (21): 3013-3022.doi: 10.3969/j.issn.1006-5725.2024.21.009

• Basic Research • Previous Articles     Next Articles

The mechanism of cyclin D1 ameliorates renal ischemia⁃reperfusion⁃induced acute kidney injury by promotingglycolysis

Yuliang HUANG,Ying TANG(),Wenjuan YU,Junzhe. CHEN   

  1. Department of Nephrology,the Third Affiliated Hospital of Southern Medical University,Guangzhou 510630,Guangdong,China
  • Received:2024-07-25 Online:2024-11-10 Published:2024-11-19
  • Contact: Ying TANG E-mail:ty.102@163.com

Abstract:

Objective To investigate the impact of CCND1 on renal ischemia?reperfusion?induced acute kidney injury through the promotion of glycolysis and elucidate its underlying molecular mechanism, thereby offering a novel therapeutic target for acute kidney injury. Methods We selected 8?week?old male C57BL/6 mice to establish a model of renal ischemia?reperfusion injury (IRI). To investigate the role of CCND1 in acute kidney injury (AKI), we employed a CCND1 overexpression plasmid and a CCND1 interference plasmid for both in vivo and in vitro experiments. Kidney function was evaluated using creatinine and urea nitrogen test kits, while glycolysis and indicators of renal tubule epithelial cell damage were assessed through quantitative real?time PCR, Western blotting, immunohistochemistry, and immunofluorescence techniques. Results In the model of renal ischemia?reperfusion?induced acute renal injury, down?regulation of CCND1 expression in renal tubular epithelial cells resulted in cellular and tissue damage. However, when an overexpression plasmid for CCND1 was administered in vivo, it significantly improved kidney function and reduced kidney injury in IRI mice. The overexpression of CCND1 promoted glycolysis, pyruvate production, and increased energy production. We further confirmed the role of CCND1 in vitro where its overexpression promoted glycolysis, enhanced energy production, and alleviated AKI. Conversely, knockdown of CCND1 inhibited glycolysis leading to severe impairment in cell energy production and exacerbation of injury. Conclusions In summary, down?regulation of CCND1 expression in renal tubular epithelial cells is observed in acute kidney injury, while overexpression of CCND1 can ameliorate acute kidney injury induced by renal ischemia?reperfusion. This mechanism may be attributed to the promotion of glycolysis and timely restoration of energy supply to cells and tissues facilitated by CCND1 overexpression.

Key words: renal ischemia?reperfusion injury, acute kidney injury, tubular epithelial cells, Cyclin D1, glycolysis, energy metabolism

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