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Yang Q, Meng X, Chen J, Li X, Huang Y, Xiao X, Li R, Wu X. RPLP2 activates TLR4 in an autocrine manner and promotes HIF-1α-induced metabolic reprogramming in hepatocellular carcinoma. Cell Death Discov 2023; 9:440. [PMID: 38052785 DOI: 10.1038/s41420-023-01719-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 11/04/2023] [Accepted: 11/13/2023] [Indexed: 12/07/2023] Open
Abstract
Metabolic reprogramming is a major feature of cancer, and aerobic glycolysis is one of the most widely studied metabolic reprogramming processes. Acidic ribosome protein P2 (RPLP2) is associated with both tumorigenesis and endoplasmic reticulum stress. However, limited knowledge exists regarding the role of RPLP2 in hepatocellular carcinoma (HCC) progression. In the present study, we observed a significant upregulation of RPLP2 in HCC tissues. Moreover, RPLP2 expression is closely correlated with patient prognosis and survival. The subsequent experimental validation demonstrated that RPLP2 exerted a regulatory effect on the expression of glycolytic enzymes and lactate production, thereby facilitating HCC cell proliferation. Mechanistically, the PI3K/AKT signalling pathway was found to play an important role in the regulation of hypoxia-inducible factor-1α (HIF-1α)-mediated aerobic glycolysis and cell growth. RPLP2 activates TLR4 on the surface of HCC cells and the downstream PI3K/AKT pathway through autocrine signalling. This activation then facilitates the entry of HIF-1α into the nucleus, enabling it to fulfil its transcriptional function. In conclusion, our findings suggested that RPLP2 induces a metabolic shift towards aerobic glycolysis and facilitates the progression of HCC through TLR4-dependent activation of the PI3K/AKT/HIF-1α pathway. Our study revealed the novel mechanism by which the ribosomal protein RPLP2 regulates glycolysis to promote HCC progression. These findings may offer a potential therapeutic target for HCC treatment.
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Affiliation(s)
- Qingqing Yang
- Department of Gastroenterology, The Yancheng Clinical College of Xuzhou Medical University, 224006, Yancheng, Jiangsu, China
| | - Xiangrui Meng
- Yancheng Medical Research Center of Nanjing University Medical School, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School, The First People's Hospital of Yancheng, 224006, Yancheng, Jiangsu, China
| | - Jin Chen
- Department of Gastroenterology, The Yancheng Clinical College of Xuzhou Medical University, 224006, Yancheng, Jiangsu, China
| | - Xiangsu Li
- Department of Gastroenterology, The Yancheng Clinical College of Xuzhou Medical University, 224006, Yancheng, Jiangsu, China
| | - Yang Huang
- Department of Gastroenterology, The Yancheng Clinical College of Xuzhou Medical University, 224006, Yancheng, Jiangsu, China
| | - Xueyi Xiao
- Department of Gastroenterology, The Yancheng Clinical College of Xuzhou Medical University, 224006, Yancheng, Jiangsu, China
| | - Rongqing Li
- Department of Medical Genetics and Prenatal Diagnosis, The Affiliated Taizhou People's Hospital of Nanjing Medical University, 225399, Taizhou, Jiangsu, China.
| | - Xudong Wu
- Department of Gastroenterology, The Yancheng Clinical College of Xuzhou Medical University, 224006, Yancheng, Jiangsu, China.
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Wang G, Qin M, Zhang B, Yan Y, Yang F, Chen Q, Liu Y, Qiao F, Ni Y. Decreased expression of RPL15 and RPL18 exacerbated the calcification of valve interstitial cells during aortic valve calcification. Cell Biol Int 2023; 47:1749-1759. [PMID: 37431269 DOI: 10.1002/cbin.12070] [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: 09/27/2022] [Revised: 06/19/2023] [Accepted: 07/02/2023] [Indexed: 07/12/2023]
Abstract
Calcific aortic valve disease (CAVD) is the most common valvular heart disease, with an increasing prevalence due to an aging population. The pathobiology of CAVD is a multifaceted and actively regulated process, but the detailed mechanisms have not been elucidated. The present study aims to identify the differentially expressed genes (DEGs) in calcified aortic valve tissues, and to analyze the correlation between DEGs and clinical features in CAVD patients. The DEGs were screened by microarray in normal and CAVD groups (n = 2 for each group), and confirmed by quantitative real-time polymerase chain reaction in normal (n = 12) and calcified aortic valve tissues (n = 34). A total of 1048 DEGs were identified in calcified aortic valve tissues, including 227 upregulated mRNAs and 821 downregulated mRNAs. Based on multiple bioinformatic analyses, three 60S ribosomal subunit components (RPL15, RPL18, and RPL18A), and two 40S ribosomal subunit components (RPS15 and RPS21) were identified as the top 5 hub genes in the protein-protein interaction network of DEGs. The expression of RPL15 and RPL18 was also found significantly decreased in calcified aortic valve tissues (both p < .01), and negatively correlated with the osteogenic differentiation marker OPN in CAVD patients (both p < .01). Moreover, inhibition of RPL15 or RPL18 exacerbated the calcification of valve interstitial cells under osteogenic induction conditions. The present study proved that decreased expression of RPL15 and RPL18 was closely associated with aortic valve calcification, which provided valuable clues to find therapeutic targets for CAVD.
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Affiliation(s)
- Guokun Wang
- Department of Cardiovascular Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Department of Cardiovascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Ming Qin
- Department of Cardiovascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Boyao Zhang
- Department of Cardiovascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yan Yan
- Department of Cardiovascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
- Department of Cardiothoracic Surgery, No.903 Hospital of PLA, Hangzhou, Zhejiang, China
| | - Fan Yang
- Department of Cardiovascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Qian Chen
- Department of Cardiovascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yang Liu
- Department of Cardiovascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
- Department of Critical Care Medicine, Naval Medical Center of PLA, Shanghai, China
| | - Fan Qiao
- Department of Cardiovascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yiming Ni
- Department of Cardiovascular Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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Yu X, Dai C, Zhao X, Huang Q, He X, Zhang R, Lin Z, Shen Y. Ruthenium red attenuates acute pancreatitis by inhibiting MCU and improving mitochondrial function. Biochem Biophys Res Commun 2022; 635:236-243. [DOI: 10.1016/j.bbrc.2022.10.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 09/28/2022] [Accepted: 10/12/2022] [Indexed: 11/16/2022]
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