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Wu F, Xu J, Jin X, Zhu Y, Gao W, Liu M, Zhang Y, Qian W, Huang X, Zhao D, Feng G, Hou S, Xi X. TRIM8 promotes ovarian cancer proliferation and migration by targeting VDAC2 for ubiquitination and degradation. Cancer Med 2024; 13:e7396. [PMID: 38881325 PMCID: PMC11180974 DOI: 10.1002/cam4.7396] [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: 12/05/2023] [Revised: 03/21/2024] [Accepted: 06/02/2024] [Indexed: 06/18/2024] Open
Abstract
BACKGROUND Ovarian cancer is a common gynecological tumor with high malignant potential and poor prognosis. TRIM8, is involved in the development of various tumors, but its precise regulatory role in ovarian cancer is still unknown. AIMS The aim of this study was to explore the specific mechanism by which TRIM8 regulates ovarian cancer. MATERIALS AND METHODS We used bioinformatics analysis to screen for high expression of TRIM8 in ovarian cancer. The expression of TRIM8 in healthy and cancerous ovarian tissues was assessed by immunofluorescence. TRIM8 was silenced or overexpressed in ovarian cancer cell lines, with cell proliferation and migration evaluated by CCK8, transwell and clonal formation assays. The effect of TRIM8 on ovarian cancer cells in vivo was assessed by subcutaneous tumor formation experiments in nude mice. The potential interacting protein VDAC2 was identified by mass spectrometry. The mechanism underlying TRIM8 regulation of VDAC2 was evaluated by co-immunoprecipitation and western blotting. RESULTS TRIM8 was overexpressed in ovarian cancer. TRIM8 promoted the proliferation and migration of ovarian cancer cells in vitro and the growth of subcutaneous tumors in mice in vivo. TRIM8 interacted with VDAC2, weakened the stability of the protein, and promoted its polyubiquitination and subsequent degradation. Knockdown of VDAC2 increased the resistance of ovarian cancer cells to iron death, whereas overexpression of VDAC2 attenuated ovarian cancer progression induced by TRIM8 overexpression. DISCUSSION TRIM8 promotes ovarian cancer proliferation and migration by targeting VDAC2 for ubiquitination and degradation, these finding may provide new targets for the treatment of ovarian cancer. CONCLUSION TRIM8 degraded VDAC2 through the ubiquitination pathway, increased the resistance of ovarian cancer cells to iron death, and promoted the proliferation and migration of ovarian cancer.
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Affiliation(s)
- Fei Wu
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Jiaqi Xu
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Xin Jin
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Yue Zhu
- Department of Breast and Thyroid SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Wenxin Gao
- Department of Histology and Embryology, School of Basic Medical SciencesNanjing Medical UniversityNanjingChina
| | - Meng Liu
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Yan Zhang
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Weifeng Qian
- Department of Breast and Thyroid SurgeryThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Xiaoyan Huang
- Department of Histology and Embryology, School of Basic Medical SciencesNanjing Medical UniversityNanjingChina
| | - Dan Zhao
- Reproductive Medicine CenterThe Fourth Affiliated Hospital of Jiangsu UniversityZhenjiangChina
- Institute of Reproductive Sciences, Jiangsu UniversityZhenjiangChina
| | - Guannan Feng
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Shunyu Hou
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
| | - Xiaoxue Xi
- Department of Obstetrics and GynecologyThe Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou Municipal HospitalSuzhouJiangsuChina
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Xing W, Xu S, Zhang H. Establishment and validation of a prognostic scoring model based on disulfidptosis-related long non-coding RNAs in stomach adenocarcinoma. Transl Cancer Res 2024; 13:2357-2371. [PMID: 38881918 PMCID: PMC11170542 DOI: 10.21037/tcr-23-2067] [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: 11/15/2023] [Accepted: 03/31/2024] [Indexed: 06/18/2024]
Abstract
Background Stomach adenocarcinoma (STAD), a frequently occurring gastrointestinal tumour, is often detected late and has a poor prognosis. Long non-coding RNAs (lncRNAs) significantly affect tumour development. Recent studies have identified disulfidptosis as a previously unexplained form of cell death. Herein, we aimed to examine the predictive value of disulfidptosis-related lncRNA models for the clinical prognosis and immunotherapy of STAD. Methods STAD-related transcriptomic data were obtained from The Cancer Genome Atlas (TCGA), whereas genes associated with disulfidptosis were identified from previously published papers. A risk prediction model for disulfidptosis-related lncRNAs was developed using the Cox regression and least absolute shrinkage selection algorithm methods. The accuracy of the model was confirmed using calibration curves, and the biological functions were analysed using Gene Ontology (GO) and Gene Set Enrichment Analysis (GSEA). Finally, the tumour mutation burden (TMB) and tumour immune dysfunction and exclusion (TIDE) algorithms were used to screen drugs that are sensitive to STAD. Results The risk prediction models were constructed using seven disulfidptosis-related lncRNAs. The validated results were consistent with the predicted ones, with significant survival differences. When combined with clinical data, the risk scores were used as independent prognostic markers. Based on the tumour mutation load, the high-risk patient group had a poorer survival rate as compared with the low-risk patient group. Further studies were conducted to understand the different groups' inconsistent responses to immune status; subsequently, relatively sensitive drugs were identified. Conclusions Overall, seven markers of disulfidptosis-related lncRNAs associated with STAD were found to facilitate prognostic prediction, suggesting new ideas for immunotherapy and clinical applications.
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Affiliation(s)
- Weiming Xing
- First Clinical College, Hainan Medical University, Haikou, China
| | - Shikai Xu
- First Clinical College, Hainan Medical University, Haikou, China
| | - Hao Zhang
- Department of General Surgery, The First Affiliated Hospital of Hainan Medical University, Haikou, China
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Liu Y, Xu R, Xu J, Wu T, Zhang X. BAG3 regulates bone marrow mesenchymal stem cell proliferation by targeting INTS7. PeerJ 2023; 11:e15828. [PMID: 37576499 PMCID: PMC10422954 DOI: 10.7717/peerj.15828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 07/11/2023] [Indexed: 08/15/2023] Open
Abstract
Background BAG3 is an essential regulator of cell survival and has been investigated in the context of heart disease and cancer. Our previous study used immunoprecipitation-liquid chromatography-tandem mass spectrometry to show that BAG3 might directly interact with INTS7 and regulate bone marrow mesenchymal stem cell (BMMSCs) proliferation. However, whether BAG3 bound INTS7 directly and how it regulated BMMSCs expansion was unclear. Methods BAG3 expression was detected by quantitative real-time PCR in BMMSCs after siRNA-mediated BAG3 knockdown. BMMSC proliferation was determined using the CCK-8 and colony formation assays. The transwell migration, flow cytometry and TUNEL assays were performed to measure BMMSC migration, cell cycle and apoptosis, respectively. Moreover, co-immunoprecipitation, protein half-life assay and western blotting analyses were used to determine the regulatory mechanism underlying the BAG3-mediated increase in BMMSC proliferation. Results The results showed that knocking down BAG3 in BMMSCs markedly decreased their proliferative activity, colony formation and migratory capacity, and induced cell apoptosis as well as cell cycle arrest. Meanwhile, overexpression of BAG3 had the opposite effect. Bioinformatics and BAG3-INTS7 co-immunoprecipitation analyses revealed that BAG3 directly interacted with INTS7. Moreover, the downregulation of BAG3 inhibited the expression of INTS7 and promoted its ubiquitination. We also observed that BAG3 knockdown increased the levels of reactive oxygen species and the extent of DNA damage in BMMSCs. Notably, the upregulation of INTS7 or the addition of an antioxidant scavenger could rescue the BMMSC phenotype induced by BAG3 downregulation. Conclusions BAG3 directly interacts with INTS7 and promotes BMMSC expansion by reducing oxidative stress.
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Affiliation(s)
- Yubo Liu
- Department of Orthopaedics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China
| | - Renjie Xu
- Department of Orthopaedics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China
| | - Jinfu Xu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Tiantian Wu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiangxin Zhang
- Department of Orthopaedics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China
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Liu Y, Lei J, Ji X, Li C, Chen X, Wang J, Dong J, Zhang H, Li Y. Knockdown of growth differentiation factor-15 inhibited nonsmall cell lung cancer through inactivating PTEN/PI3K/AKT signaling pathway. Genes Genomics 2023; 45:507-517. [PMID: 36306063 DOI: 10.1007/s13258-022-01328-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 10/10/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Non-small cell lung cancer (NSCLC) is characterized by high morbidity and mortality in the world. Growth and differentiation factor 15 (GDF15) has been proved to play an important role in regulating tumor progression. However, the influence of GDF15 on NSCLC remains unclear. OBJECTIVE We aimed to investigate the regulatory role of GDF15 in NSCLC. METHODS The correlation between GDF15 expression and prognosis, stage of NSCLC was examined with bioinformatics method. The cell proliferation was detected with CCK8 and EdU staining. Wound healing, Transwell, flow cytometry assays were used to measure cell migration, invasion, and apoptosis, respectively. RESULTS High expression of GDF15 is correlated with worse survival and malignant progression of NSCLC. Knockdown of GDF15 restrained the proliferation, invasion, migration, but accelerated apoptosis of lung cancer cells through regulating PTEN/PI3K/AKT signaling pathway. sh-GDF15 suppressed epithelial mesenchymal transition (EMT) process and promoted the chemotherapy sensitivity of lung cancer cells. CONCLUSION GDF15 plays an important role in NSCLC progression. GDF15 mediated PTEN/PI3K/AKT signaling pathway might be the potential therapeutic targets for the prevention and treatment of GDF15.
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Affiliation(s)
- Yongshi Liu
- Department of thoracic surgery, Second Affiliated Hospital of Air Force Medical University, No. 1 Xinsi Road, 710038, Xi'an, China
| | - Jie Lei
- Department of thoracic surgery, Second Affiliated Hospital of Air Force Medical University, No. 1 Xinsi Road, 710038, Xi'an, China
| | - Xiang Ji
- Department of thoracic surgery, Second Affiliated Hospital of Air Force Medical University, No. 1 Xinsi Road, 710038, Xi'an, China.
| | - Chunmei Li
- Department of thoracic surgery, Second Affiliated Hospital of Air Force Medical University, No. 1 Xinsi Road, 710038, Xi'an, China
| | - Xiaoxia Chen
- Department of thoracic surgery, Second Affiliated Hospital of Air Force Medical University, No. 1 Xinsi Road, 710038, Xi'an, China
| | - Juan Wang
- Department of thoracic surgery, Second Affiliated Hospital of Air Force Medical University, No. 1 Xinsi Road, 710038, Xi'an, China
| | - Jiajia Dong
- Department of thoracic surgery, Second Affiliated Hospital of Air Force Medical University, No. 1 Xinsi Road, 710038, Xi'an, China
| | - Hongpei Zhang
- Department of thoracic surgery, Second Affiliated Hospital of Air Force Medical University, No. 1 Xinsi Road, 710038, Xi'an, China
| | - Yan Li
- Department of thoracic surgery, Second Affiliated Hospital of Air Force Medical University, No. 1 Xinsi Road, 710038, Xi'an, China
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Zhou JY, Liu JY, Tao Y, Chen C, Liu SL. LINC01526 Promotes Proliferation and Metastasis of Gastric Cancer by Interacting with TARBP2 to Induce GNG7 mRNA Decay. Cancers (Basel) 2022; 14:cancers14194940. [PMID: 36230863 PMCID: PMC9562272 DOI: 10.3390/cancers14194940] [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: 08/31/2022] [Revised: 09/30/2022] [Accepted: 10/06/2022] [Indexed: 11/21/2022] Open
Abstract
Simple Summary Many long noncoding RNAs play an important role in gastric cancer progression. In this study, we focused on LINC01526. Through expression and functional analyses, we obtained a preliminary understanding of the pro-cancer role of LINC01526 in gastric cancer. Furthermore, RNA pull-down and RNA immunoprecipitation chip assays demonstrated that LINC01526 interacts with TARBP2, an RNA-binding protein controlling mRNA stability. Moreover, TARBP2 could bind and destabilize GNG7 transcripts. Finally, the rescue assay disclosed that LINC01526 promoted gastric cancer progression by interacting with TARBP2, leading to the degradation of GNG7 mRNA. Abstract Gastric cancer is the most common malignancy of the human digestive system. Long noncoding RNAs (lncRNAs) influence the occurrence and development of gastric cancer in multiple ways. However, the function and mechanism of LINC01526 in gastric cancer remain unknown. Herein, we investigated the function of LINC01526 with respect to the malignant progression of gastric cancer. We found that LINC01526 was upregulated in gastric cancer cells and tissues. The function experiments in vitro and the Xenograft mouse model in vivo proved that LINC01526 could promote gastric cancer cell proliferation and migration. Furthermore, LINC01526 interacted with TAR (HIV-1) RNA-binding protein 2 (TARBP2) and decreased the mRNA stability of G protein gamma 7 (GNG7) through TARBP2. Finally, the rescue assay showed that downregulating GNG7 partially rescued the cell proliferation inhibited by LINC01526 or TARBP2 silencing. In summary, LINC01526 promoted gastric cancer progression by interacting with TARBP2, which subsequently degraded GNG7 mRNA. This study not only explores the role of LINC01526 in gastric cancer, but also provides a laboratory basis for its use as a new biomarker for diagnosis and therapeutic targets.
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Affiliation(s)
- Jin-Yong Zhou
- Jiangsu Province Hospital of Chinese Medicine, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, China
- Correspondence: (J.-Y.Z.); (S.-L.L.)
| | - Jin-Yan Liu
- Department of Breast and Thyroid Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215002, China
| | - Yu Tao
- Jiangsu Province Hospital of Chinese Medicine, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Chen Chen
- Jiangsu Province Hospital of Chinese Medicine, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Shen-Lin Liu
- Jiangsu Province Hospital of Chinese Medicine, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, China
- Correspondence: (J.-Y.Z.); (S.-L.L.)
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