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Feng X, Song D, Liu X, Liang Y, Jiang P, Wu S, Liu F. RNF125‑mediated ubiquitination of MCM6 regulates the proliferation of human liver hepatocellular carcinoma cells. Oncol Lett 2024; 27:105. [PMID: 38298426 PMCID: PMC10829068 DOI: 10.3892/ol.2024.14238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 12/20/2023] [Indexed: 02/02/2024] Open
Abstract
Hepatocellular carcinoma (HCC) is the third leading cause of cancer-associated mortality worldwide. Minichromosome maintenance proteins (MCMs), particularly MCM2-7, are upregulated in various cancers, including HCC. The aim of the present study was to investigate the role of MCM2-7 in human liver HCC (LIHC) and the regulation of the protein homeostasis of MCM6 by a specific E3 ligase. Bioinformatics analyses demonstrated that MCM2-7 were highly expressed in LIHC compared with corresponding normal tissues at the mRNA and protein levels, and patients with LIHC and high mRNA expression levels of MCM2, MCM3, MCM6 and MCM7 had poor overall survival rates. Cell Counting Kit-8 and colony formation assays revealed that the knockdown of MCM2, MCM3, MCM6 or MCM7 in Huh7 and Hep3B HCC cells inhibited cell proliferation and colony formation. In addition, pull-down, co-immunoprecipitation and ubiquitination assays demonstrated that RNF125 interacts with MCM6 and mediates its ubiquitination. Furthermore, co-transfection experiments indicated that RNF125 promoted the proliferation of HCC cells mainly through MCM6. In summary, the present study suggests that the RNF125-MCM6 axis plays an important role in the regulation of HCC cell proliferation and is a promising therapeutic target for the treatment of LIHC.
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Affiliation(s)
- Xueyi Feng
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
- Department of General Surgery, Lu'an Affiliated Hospital of Anhui Medical University, Lu'an, Anhui 237005, P.R. China
| | - Dongqiang Song
- Liver Cancer Institute, Zhongshan Hospital of Fudan University, Shanghai 200032, P.R. China
| | - Xiaolan Liu
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Yongkang Liang
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
- Department of General Surgery, Lu'an Affiliated Hospital of Anhui Medical University, Lu'an, Anhui 237005, P.R. China
| | - Pin Jiang
- Department of General Surgery, Lu'an Affiliated Hospital of Anhui Medical University, Lu'an, Anhui 237005, P.R. China
| | - Shenwei Wu
- Department of General Surgery, Lu'an Affiliated Hospital of Anhui Medical University, Lu'an, Anhui 237005, P.R. China
| | - Fubao Liu
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
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Sun M, Shi G, Zhang X, Kan C, Xie S, Peng W, Liu W, Wang P, Zhang R. Deciphering roles of protein post-translational modifications in IgA nephropathy progression and potential therapy. Aging (Albany NY) 2024; 16:964-982. [PMID: 38175721 PMCID: PMC10817402 DOI: 10.18632/aging.205406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 11/16/2023] [Indexed: 01/05/2024]
Abstract
Immunoglobulin A nephropathy (IgAN), one type of glomerulonephritis, displays the accumulation of glycosylated IgA in the mesangium. Studies have demonstrated that both genetics and epigenetics play a pivotal role in the occurrence and progression of IgAN. Post-translational modification (PTM) has been revealed to critically participate in IgAN development and progression because PTM dysregulation results in impaired degradation of proteins that regulate IgAN pathogenesis. A growing number of studies identify that PTMs, including sialylation, o-glycosylation, galactosylation, phosphorylation, ubiquitination and deubiquitination, modulate the initiation and progression of IgAN. Hence, in this review, we discuss the functions and mechanisms of PTMs in regulation of IgAN. Moreover, we outline numerous compounds that govern PTMs and attenuate IgAN progression. Targeting PTMs might be a useful strategy to ameliorate IgAN.
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Affiliation(s)
- Mengying Sun
- Department of Nephrology, Zhuhai People’s Hospital, Zhuhai Clinical Medical College of Jinan University, Zhuhai, Guangdong 519000, China
| | - Guojuan Shi
- Department of Nephrology, Zhuhai People’s Hospital, Zhuhai Clinical Medical College of Jinan University, Zhuhai, Guangdong 519000, China
| | - Xiaohan Zhang
- Department of Nephrology, Zhuhai People’s Hospital, Zhuhai Clinical Medical College of Jinan University, Zhuhai, Guangdong 519000, China
| | - Chao Kan
- Department of Nephrology, Zhuhai People’s Hospital, Zhuhai Clinical Medical College of Jinan University, Zhuhai, Guangdong 519000, China
| | - Shimin Xie
- Department of Nephrology, Zhuhai People’s Hospital, Zhuhai Clinical Medical College of Jinan University, Zhuhai, Guangdong 519000, China
| | - Weixiang Peng
- Department of Nephrology, Zhuhai People’s Hospital, Zhuhai Clinical Medical College of Jinan University, Zhuhai, Guangdong 519000, China
| | - Wenjun Liu
- Department of Medicine, Zhejiang Zhongwei Medical Research Center, Hangzhou, Zhejiang 310018, China
| | - Peter Wang
- Department of Medicine, Zhejiang Zhongwei Medical Research Center, Hangzhou, Zhejiang 310018, China
| | - Rui Zhang
- Department of Nephrology, Zhuhai People’s Hospital, Zhuhai Clinical Medical College of Jinan University, Zhuhai, Guangdong 519000, China
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Kolapalli SP, Nielsen TM, Frankel LB. Post-transcriptional dynamics and RNA homeostasis in autophagy and cancer. Cell Death Differ 2023:10.1038/s41418-023-01201-5. [PMID: 37558732 DOI: 10.1038/s41418-023-01201-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/22/2023] [Accepted: 08/01/2023] [Indexed: 08/11/2023] Open
Abstract
Autophagy is an essential recycling and quality control pathway which preserves cellular and organismal homeostasis. As a catabolic process, autophagy degrades damaged and aged intracellular components in response to conditions of stress, including nutrient deprivation, oxidative and genotoxic stress. Autophagy is a highly adaptive and dynamic process which requires an intricately coordinated molecular control. Here we provide an overview of how autophagy is regulated post-transcriptionally, through RNA processing events, epitranscriptomic modifications and non-coding RNAs. We further discuss newly revealed RNA-binding properties of core autophagy machinery proteins and review recent indications of autophagy's ability to impact cellular RNA homeostasis. From a physiological perspective, we examine the biological implications of these emerging regulatory layers of autophagy, particularly in the context of nutrient deprivation and tumorigenesis.
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Affiliation(s)
| | | | - Lisa B Frankel
- Danish Cancer Institute, Copenhagen, Denmark.
- Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark.
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