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Meng Y, Chen L, Chai Y, Meng W, Yang G, Ren J, Li H, Qi P, Chen J, Wang N. PUM2 promoted osteoarthritis progression through PTEN-mediated chondrocyte ferroptosis by facilitating NEDD4 mRNA degradation. ENVIRONMENTAL TOXICOLOGY 2024; 39:4318-4332. [PMID: 38733337 DOI: 10.1002/tox.24310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/21/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024]
Abstract
Osteoarthritis (OA) is a prevalent degenerative joint disease with a lack of effective therapeutic. Chondrocyte ferroptosis contributes to the progression of OA. PUM2 is shown to exacerbate ischemia-reperfusion-induced neuroinflammation by promoting ferroptosis, but its role in OA remains unexplored. Here, primary mouse chondrocytes were stimulated with IL-1β to mimic OA chondrocyte injury in vitro. And PUM2 was upregulated in OA cartilage tissues and IL-1β-induced chondrocytes. Silencing PUM2 alleviated IL-1β-induced chondrocyte inflammation and ECM degradation. Mechanistically, PUM2 facilitated the degradation of NEDD4 mRNA by binding to the 3'UTR of NEDD4 mRNA, which in turn inhibited NEDD4 induced PTEN ubiquitination and degradation. Consistently, NEDD4 silencing reversed the ameliorative effect of PUM2 knockdown on chondrocyte injury, and overexpression of PTEN abolished the improved role of NEDD4 in chondrocyte injury. Moreover, PTEN aggravated IL-1β-induced ferroptosis in chondrocytes through the Nrf2/HO-1 pathway by increasing the levels of Fe2+, ROS, MDA, and ACSL4 protein, decreasing the activity of SOD and the levels of GSH and GPX4 protein, and aggravating mitochondrial damage. Additionally, destabilized medial meniscus (DMM) were conducted to establish the OA mouse model, and adenovirus-mediated PUM2 shRNA was administered intra-articularly. Silencing PUM2 attenuated OA-induced cartilage damage in vivo. In conclusion, PUM2 promoted OA progression through PTEN-mediated chondrocyte ferroptosis by facilitating NEDD4 mRNA degradation.
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Affiliation(s)
- Yu Meng
- Department of Emergency Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Li Chen
- Department of Emergency Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yuxia Chai
- Department of Emergency Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Weili Meng
- Department of Emergency Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Guohui Yang
- Department of Emergency Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jia Ren
- Department of Emergency Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hongshuai Li
- Department of Emergency Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Peiyi Qi
- Department of Emergency Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Juwu Chen
- Department of Emergency Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Nan Wang
- Department of Emergency Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Zhou P, Meng X, Nie Z, Wang H, Wang K, Du A, Lei Y. PTEN: an emerging target in rheumatoid arthritis? Cell Commun Signal 2024; 22:246. [PMID: 38671436 PMCID: PMC11046879 DOI: 10.1186/s12964-024-01618-6] [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: 12/28/2023] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) is a critical tumor suppressor protein that regulates various biological processes such as cell proliferation, apoptosis, and inflammatory responses by controlling the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (PI3K/AKT) signaling pathway. PTEN plays a crucial role in the pathogenesis of rheumatoid arthritis (RA). Loss of PTEN may contribute to survival, proliferation, and pro-inflammatory cytokine release of fibroblast-like synoviocytes (FLS). Also, persistent PI3K signaling increases myeloid cells' osteoclastic potential, enhancing localized bone destruction. Recent studies have shown that the expression of PTEN protein in the synovial lining of RA patients with aggressive FLS is minimal. Experimental upregulation of PTEN protein expression could reduce the damage caused by RA. Nonetheless, a complete comprehension of aberrant PTEN drives RA progression and its interactions with other crucial molecules remains elusive. This review is dedicated to promoting a thorough understanding of the signaling mechanisms of aberrant PTEN in RA and aims to furnish pertinent theoretical support for forthcoming endeavors in both basic and clinical research within this domain.
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Affiliation(s)
- Pan Zhou
- Chengdu Rheumatology Hospital, Chengdu, Sichuan Province, China
| | - Xingwen Meng
- Chengdu Rheumatology Hospital, Chengdu, Sichuan Province, China
| | - Zhimin Nie
- Chengdu Rheumatology Hospital, Chengdu, Sichuan Province, China
| | - Hua Wang
- Chengdu Rheumatology Hospital, Chengdu, Sichuan Province, China
| | - Kaijun Wang
- Nanjing Tongshifeng Hospital, Nanjing, Jiangsu Province, China
| | - Aihua Du
- Zhengzhou Gout and Rheumatology Hospital, Zhengzhou, Henan Province, China
| | - Yu Lei
- Chengdu Rheumatology Hospital, Chengdu, Sichuan Province, China.
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Wang Y, Xu R, Yan Y, He B, Miao C, Fang Y, Wan H, Zhou G. Exosomes-Mediated Signaling Pathway: A New Direction for Treatment of Organ Ischemia-Reperfusion Injury. Biomedicines 2024; 12:353. [PMID: 38397955 PMCID: PMC10886966 DOI: 10.3390/biomedicines12020353] [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: 12/31/2023] [Revised: 01/24/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
Ischemia reperfusion (I/R) is a common pathological process which occurs mostly in organs like the heart, brain, kidney, and lung. The injury caused by I/R gradually becomes one of the main causes of fatal diseases, which is an urgent clinical problem to be solved. Although great progress has been made in therapeutic methods, including surgical, drug, gene therapy, and transplant therapy for I/R injury, the development of effective methods to cure the injury remains a worldwide challenge. In recent years, exosomes have attracted much attention for their important roles in immune response, antigen presentation, cell migration, cell differentiation, and tumor invasion. Meanwhile, exosomes have been shown to have great potential in the treatment of I/R injury in organs. The study of the exosome-mediated signaling pathway can not only help to reveal the mechanism behind exosomes promoting reperfusion injury recovery, but also provide a theoretical basis for the clinical application of exosomes. Here, we review the research progress in utilizing various exosomes from different cell types to promote the healing of I/R injury, focusing on the classical signaling pathways such as PI3K/Akt, NF-κB, Nrf2, PTEN, Wnt, MAPK, toll-like receptor, and AMPK. The results suggest that exosomes regulate these signaling pathways to reduce oxidative stress, regulate immune responses, decrease the expression of inflammatory cytokines, and promote tissue repair, making exosomes a competitive emerging vector for treating I/R damage in organs.
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Affiliation(s)
- Yanying Wang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Hangzhou 310053, China; (Y.W.); (B.H.); (C.M.)
| | - Ruojiao Xu
- College of Life Science, Zhejiang Chinese Medical University, 548 Binwen Road, Hangzhou 310053, China; (R.X.); (Y.Y.); (Y.F.)
| | - Yujia Yan
- College of Life Science, Zhejiang Chinese Medical University, 548 Binwen Road, Hangzhou 310053, China; (R.X.); (Y.Y.); (Y.F.)
| | - Binyu He
- The Second Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Hangzhou 310053, China; (Y.W.); (B.H.); (C.M.)
| | - Chaoyi Miao
- The Second Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Hangzhou 310053, China; (Y.W.); (B.H.); (C.M.)
| | - Yifeng Fang
- College of Life Science, Zhejiang Chinese Medical University, 548 Binwen Road, Hangzhou 310053, China; (R.X.); (Y.Y.); (Y.F.)
| | - Haitong Wan
- College of Life Science, Zhejiang Chinese Medical University, 548 Binwen Road, Hangzhou 310053, China; (R.X.); (Y.Y.); (Y.F.)
| | - Guoying Zhou
- College of Life Science, Zhejiang Chinese Medical University, 548 Binwen Road, Hangzhou 310053, China; (R.X.); (Y.Y.); (Y.F.)
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Zhang L, Hu Z, Bai W, Peng Y, Lin Y, Cong Z. Fucoxanthin ameliorates traumatic brain injury by suppressing the blood-brain barrier disruption. iScience 2023; 26:108270. [PMID: 37965135 PMCID: PMC10641514 DOI: 10.1016/j.isci.2023.108270] [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: 07/27/2023] [Revised: 09/12/2023] [Accepted: 10/17/2023] [Indexed: 11/16/2023] Open
Abstract
Fucoxanthin is the most abundant marine carotenoid extracted from seaweed. Our previous study has shown that fucoxanthin inhibited oxidative stress after traumatic brain injury (TBI). However, the effects of fucoxanthin on TBI-induced blood-brain barrier (BBB) destruction have not been well understood. In the present study, we found that fucoxanthin improved neurological dysfunction, reduced brain edema, attenuated cortical lesion volume, and decreased dendrites loss after TBI in vivo. Moreover, fucoxanthin suppressed BBB leakage, preserved tight junction (TJ) and adherens junction (AJ) proteins, and inhibited MMP-9 expression. Furthermore, fucoxanthin alleviated apoptosis and ferroptosis, and activated mitophagy in endothelial cells (ECs) after TBI. However, the protection of fucoxanthin on BBB was attenuated when mitophagy was inhibited. Importantly, fucoxanthin also provided protective effects in bEnd.3 cells after TBI. Taken together, our results suggested that fucoxanthin played a key role in the protection of BBB after TBI through mitophagy.
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Affiliation(s)
- Li Zhang
- Department of Neurosurgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, P.R.China
| | - Zhigang Hu
- Department of Neurosurgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, P.R.China
| | - Wanshan Bai
- Department of Neurosurgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, P.R.China
| | - Yaonan Peng
- Department of Neurosurgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, P.R.China
| | - Yixing Lin
- Department of Neurosurgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, P.R.China
| | - Zixiang Cong
- Department of Neurosurgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, P.R.China
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