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Lu Y, Berenson A, Lane R, Guelin I, Li Z, Chen Y, Shah S, Yin M, Soto-Ugaldi LF, Fiszbein A, Fuxman Bass JI. A large-scale cancer-specific protein-DNA interaction network. Life Sci Alliance 2024; 7:e202402641. [PMID: 39013578 PMCID: PMC11252446 DOI: 10.26508/lsa.202402641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 07/18/2024] Open
Abstract
Cancer development and progression are generally associated with gene dysregulation, often resulting from changes in the transcription factor (TF) sequence or expression. Identifying key TFs involved in cancer gene regulation provides a framework for potential new therapeutics. This study presents a large-scale cancer gene TF-DNA interaction network, as well as an extensive promoter clone resource for future studies. Highly connected TFs bind to promoters of genes associated with either good or poor cancer prognosis, suggesting that strategies aimed at shifting gene expression balance between these two prognostic groups may be inherently complex. However, we identified potential for oncogene-targeted therapeutics, with half of the tested oncogenes being potentially repressed by influencing specific activators or bifunctional TFs. Finally, we investigate the role of intrinsically disordered regions within the key cancer-related TF ESR1 in DNA binding and transcriptional activity, and found that these regions can have complex trade-offs in TF function. Altogether, our study broadens our knowledge of the TFs involved in cancer gene regulation and provides a valuable resource for future studies and therapeutics.
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Affiliation(s)
- Yunwei Lu
- https://ror.org/05qwgg493 Biology Department, Boston University, Boston, MA, USA
| | - Anna Berenson
- https://ror.org/05qwgg493 Biology Department, Boston University, Boston, MA, USA
- https://ror.org/05qwgg493 Molecular Biology, Cellular Biology and Biochemistry Program, Boston University, Boston, MA, USA
| | - Ryan Lane
- https://ror.org/05qwgg493 Biology Department, Boston University, Boston, MA, USA
| | - Isabelle Guelin
- https://ror.org/05qwgg493 Biology Department, Boston University, Boston, MA, USA
| | - Zhaorong Li
- https://ror.org/05qwgg493 Bioinformatics Program, Boston University, Boston, MA, USA
| | - Yilin Chen
- https://ror.org/05qwgg493 Biology Department, Boston University, Boston, MA, USA
| | - Sakshi Shah
- https://ror.org/05qwgg493 Biology Department, Boston University, Boston, MA, USA
| | - Meimei Yin
- https://ror.org/05qwgg493 Biology Department, Boston University, Boston, MA, USA
| | | | - Ana Fiszbein
- https://ror.org/05qwgg493 Biology Department, Boston University, Boston, MA, USA
- https://ror.org/05qwgg493 Molecular Biology, Cellular Biology and Biochemistry Program, Boston University, Boston, MA, USA
- https://ror.org/05qwgg493 Bioinformatics Program, Boston University, Boston, MA, USA
| | - Juan Ignacio Fuxman Bass
- https://ror.org/05qwgg493 Biology Department, Boston University, Boston, MA, USA
- https://ror.org/05qwgg493 Molecular Biology, Cellular Biology and Biochemistry Program, Boston University, Boston, MA, USA
- https://ror.org/05qwgg493 Bioinformatics Program, Boston University, Boston, MA, USA
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Yuan G, Yu C, Du X, Li D, Dou H, Lu P, Wu T, Hao C, Wang Y. Injectable GelMA Hydrogel Microspheres with Sustained Release of Platelet-Rich Plasma for the Treatment of Thin Endometrium. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403890. [PMID: 39206600 DOI: 10.1002/smll.202403890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 08/02/2024] [Indexed: 09/04/2024]
Abstract
Platelet-rich plasma (PRP) intrauterine infusion has been demonstrated to be effective in treating thin endometrium and achieving pregnancy. However, the rapid release of growth factors limits its effectiveness in clinical applications, and thus, multiple intrauterine infusions are often required to achieve therapeutic efficacy. In this study, a GelMA hydrogel microsphere biomaterial is developed using droplet microfluidics to modify the delivery mode of PRP and thus prolong its duration of action. Its biocompatibility is confirmed through both in vivo and in vitro studies. Cell experiments show that PRP-loaded microspheres significantly enhance cell proliferation, migration, and angiogenesis. In vivo experiments show that the effects of PRP-loaded microspheres on repairing the endometrium and restoring fertility in mice could achieve the impact of triple PRP intrauterine infusions. Further mechanistic investigations reveal that PRP could facilitate endometrial repair by regulating the expression of E2Fs, a group of transcription factors. This study demonstrates that hydrogel microspheres could modify the delivery of PRP and prolong its duration of action, enabling endometrial repair and functional reconstruction. This design avoids repeated intrauterine injections of PRP in the clinic, reduces the number of patient visits, and provides a new avenue for clinical treatment of thin endometrium.
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Affiliation(s)
- Guanghui Yuan
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, 266011, China
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, 266011, China
| | - Chenghao Yu
- Medical Research Center, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266000, China
| | - Xin Du
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, 266011, China
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, 266011, China
| | - Duan Li
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, 266011, China
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, 266011, China
| | - Huaiqian Dou
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, 266011, China
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, 266011, China
| | - Panpan Lu
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, 266011, China
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, 266011, China
| | - Tong Wu
- Medical Research Center, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266000, China
- Shandong Key Laboratory of Medical and Health Textile Materials, College of Textile & Clothing, Qingdao University, Qingdao, 266071, China
| | - Cuifang Hao
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, 266011, China
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, 266011, China
| | - Yuanfei Wang
- Qingdao Stomatological Hospital Affiliated to Qingdao University, Qingdao, 266001, China
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Lu Y, Berenson A, Lane R, Guelin I, Li Z, Chen Y, Shah S, Yin M, Soto-Ugaldi LF, Fiszbein A, Fuxman Bass JI. A large-scale cancer-specific protein-DNA interaction network. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.24.577099. [PMID: 38352498 PMCID: PMC10862707 DOI: 10.1101/2024.01.24.577099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Cancer development and progression are generally associated with dysregulation of gene expression, often resulting from changes in transcription factor (TF) sequence or expression. Identifying key TFs involved in cancer gene regulation provides a framework for potential new therapeutics. This study presents a large-scale cancer gene TF-DNA interaction network as well as an extensive promoter clone resource for future studies. Most highly connected TFs do not show a preference for binding to promoters of genes associated with either good or poor cancer prognosis, suggesting that emerging strategies aimed at shifting gene expression balance between these two prognostic groups may be inherently complex. However, we identified potential for oncogene targeted therapeutics, with half of the tested oncogenes being potentially repressed by influencing specific activator or bifunctional TFs. Finally, we investigate the role of intrinsically disordered regions within the key cancer-related TF estrogen receptor ɑ (ESR1) on DNA binding and transcriptional activity, and found that these regions can have complex trade-offs in TF function. Altogether, our study not only broadens our knowledge of TFs involved in the cancer gene regulatory network but also provides a valuable resource for future studies, laying a foundation for potential therapeutic strategies targeting TFs in cancer.
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Affiliation(s)
- Yunwei Lu
- Biology Department, Boston University, Boston, MA, 02215, USA
| | - Anna Berenson
- Biology Department, Boston University, Boston, MA, 02215, USA
- Molecular Biology, Cellular Biology and Biochemistry Program, Boston University, Boston, MA, 02215, USA
| | - Ryan Lane
- Biology Department, Boston University, Boston, MA, 02215, USA
| | - Isabelle Guelin
- Biology Department, Boston University, Boston, MA, 02215, USA
| | - Zhaorong Li
- Bioinformatics Program, Boston University, Boston, MA, 02215, USA
| | - Yilin Chen
- Biology Department, Boston University, Boston, MA, 02215, USA
| | - Sakshi Shah
- Biology Department, Boston University, Boston, MA, 02215, USA
| | - Meimei Yin
- Biology Department, Boston University, Boston, MA, 02215, USA
| | | | - Ana Fiszbein
- Biology Department, Boston University, Boston, MA, 02215, USA
- Molecular Biology, Cellular Biology and Biochemistry Program, Boston University, Boston, MA, 02215, USA
- Bioinformatics Program, Boston University, Boston, MA, 02215, USA
| | - Juan Ignacio Fuxman Bass
- Biology Department, Boston University, Boston, MA, 02215, USA
- Molecular Biology, Cellular Biology and Biochemistry Program, Boston University, Boston, MA, 02215, USA
- Bioinformatics Program, Boston University, Boston, MA, 02215, USA
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Lu Y, Wei Y, Shen X, Tong Y, Lu J, Zhang Y, Ma Y, Zhang R. Mechanism of E2F1 in the proliferation, migration, and invasion of endometrial carcinoma cells via the regulation of BMI1 transcription. Genes Genomics 2023; 45:1423-1431. [PMID: 37646913 DOI: 10.1007/s13258-023-01416-3] [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: 05/10/2023] [Accepted: 06/10/2023] [Indexed: 09/01/2023]
Abstract
BACKGROUND Endometrial carcinoma (EC) is the most prevalent gynecological cancer. Transcription factor (TF) regulates a large number of downstream target genes and is a key determinant of all physiological activities, including cell proliferation, differentiation, apoptosis, and cell cycle. The transcription factor E2F1 shows prominent roles in EC. BMI1 is a member of Polycomb suppressor Complex 1 (PRC1) and has been shown to be associated with EC invasiveness. It is currently unclear whether E2F1 can participate in the proliferation, migration, and invasion processes of EC cells by regulating BMI1 transcription. OBJECTIVE We investigated whether E2F1 could participate in the proliferation, migration, and invasion processes of EC cells by regulating BMI1 transcription, in order to further clarify the pathogenesis and etiology of EC, and provide reference for identifying potential therapeutic targets and developing effective prevention and treatment strategies for this disease. METHODS Human endometrial epithelial cells (hEECs) and human EC cell lines were selected. E2F1 expression was assessed by Western blot. E2F1 was silenced in AN3CA or overexpressed in HEC-1 by transfections, or E2F1 was silenced and BMI1 was overexpressed in AN3CA by cotransfection. Cell proliferation, migration, and invasion were detected by MTT, wound healing, and Transwell assays. The binding sites between E2F1 and BMI1 promoters were predicted through JASPAR website, and the targeted binding was verified by dual-luciferase report and ChIP assays. RESULTS E2F1 was up-regulated in human EC cell lines, with its expression highest in AN3CA, and lowest in HEC-1. AN3CA invasion, migration, and proliferation were repressed by E2F1 knockdown, while those of HEC-1 cells were promoted by E2F1 overexpression. E2F1 overexpression increased the activity of wild type BMI1 reporter vector promoter, while this promotion was weakened after mutation of the predicted binding site in the BMI1 promoter. In the precipitated E2F1, BMI1 promoter site level was higher than that of IgG immunoprecipitant. BMI1 silencing suppressed AN3CA cell growth. BMI1 overexpression partially abrogated E2F1 silencing-inhibited EC cell growth. CONCLUSION E2F1 promoted EC cell proliferation, invasion, and migration by promoting the transcription of BMI1.
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Affiliation(s)
- Yanyang Lu
- Department of Gynecology, The Second Affiliated Hospital of Soochow University, N0.1055, Sanxiang Road, 215000, Suzhou, China
| | - Ying Wei
- Department of Gynecology, The Second Affiliated Hospital of Soochow University, N0.1055, Sanxiang Road, 215000, Suzhou, China
| | - Xiaoqin Shen
- Department of Gynecology, The Second Affiliated Hospital of Soochow University, N0.1055, Sanxiang Road, 215000, Suzhou, China
| | - Yixi Tong
- Department of Gynecology, The Second Affiliated Hospital of Soochow University, N0.1055, Sanxiang Road, 215000, Suzhou, China
| | - Jin Lu
- Department of Gynecology, The Second Affiliated Hospital of Soochow University, N0.1055, Sanxiang Road, 215000, Suzhou, China
| | - Yahui Zhang
- Department of Gynecology, The Second Affiliated Hospital of Soochow University, N0.1055, Sanxiang Road, 215000, Suzhou, China
| | - Yun Ma
- Department of Gynecology, The Second Affiliated Hospital of Soochow University, N0.1055, Sanxiang Road, 215000, Suzhou, China
| | - Rong Zhang
- Department of Gynecology, The Second Affiliated Hospital of Soochow University, N0.1055, Sanxiang Road, 215000, Suzhou, China.
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Li X, Zhao X, Li J, Zhang X. Circ_001422 aggravates osteosarcoma progression through targeting miR-497-5p/E2F3 axis. J Biochem Mol Toxicol 2023; 37:e23392. [PMID: 37287369 DOI: 10.1002/jbt.23392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 01/09/2023] [Accepted: 05/26/2023] [Indexed: 06/09/2023]
Abstract
Circular RNAs exert vital functions in the pathogenesis of osteosarcoma (OS). Circ_001422 has been confirmed to be involved in regulating OS progression, but its specific mechanism has not been clearly studied. This work aimed to analyze circ_001422's role in OS cell biological behaviors and the possible molecular mechanisms. This work carried out reverse transcription-quantitative polymerase chain reaction for detecting circ_001422, E2F3 and miR-497-5p levels, whereas Cell counting kit-8 together with Transwell assays for measuring cell growth, migration as well as invasion abilities. Relation of miR-497-5p with E2F3, as well as circ_001422 with miR-497-5p was analyzed through dual-luciferase reporter gene assay. Protein level was identified by western blot. According to our results, circ_001422 expression within OS tissue significantly increased compared with corresponding healthy samples. Inhibition of circ_001422 significantly decreased OS cell growth, invasion and migration. From mechanism research, miR-497-5p was proved as circ_001422's target, and E2F3 was miR-497-5p's target. Besides, miR-497-5p downregulation or E2F3 overexpression abolished circ_001422 inhibition-mediated inhibition on OS cell proliferation, invasion and migration. Collectively, this study has first suggested circ_001422's role in enhancing OS proliferation, migration as well as invasion via miR-497-5p/E2F3 axis. Our results will offer new ideas and new anti-OS targets.
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Affiliation(s)
- Xinyu Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xin Zhao
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jin Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaozhan Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Ge X, Xu M, Cheng T, Hu N, Sun P, Lu B, Wang Z, Li J. TP53I13 promotes metastasis in glioma via macrophages, neutrophils, and fibroblasts and is a potential prognostic biomarker. Front Immunol 2022; 13:974346. [PMID: 36275718 PMCID: PMC9585303 DOI: 10.3389/fimmu.2022.974346] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Background TP53I13 is a protein coding tumor suppression gene encoded by the tumor protein p53. Overexpression of TP53I13 impedes tumor cell proliferation. Nevertheless, TP53I13 role and expression in the emergence and progression of glioma (low-grade glioma and glioblastoma) are yet to be identified. Thus, we aim to use comprehensive bioinformatics analyses to investigate TP53I13 and its prognostic value in gliomas. Methods Multiple databases were consulted to evaluate and assess the expression of TP53I13, such as the Cancer Genome Atlas (TCGA), the Chinese Glioma Genome Atlas (CGGA), GeneMANIA, and Gene Expression Profiling Interactive. TP53I13 expression was further explored using immunohistochemistry (IHC) and multiplex immunohistochemistry (mIHC). Through Gene Set Enrichment Analysis (GSEA), the biological functions of TP53I13 and metastatic processes associated with it were studied. Results The expression of TP53I13 was higher in tumor samples compared to normal samples. In samples retrieved from the TCGA and CGGA databases, high TP53I13 expression was associated with poor survival outcomes. The analysis of multivariate Cox showed that TP53I13 might be an independent prognostic marker of glioma. It was also found that increased expression of TP53I13 was significantly correlated with PRS type, status, 1p/19q codeletion status, IDH mutation status, chemotherapy, age, and tumor grade. According to CIBERSORT (Cell-type Identification by Estimating Relative Subsets of RNA Transcript), the expression of TP53I13 correlates with macrophages, neutrophils, and dendritic cells. GSEA shows a close correlation between TP53I13 and p53 signaling pathways, DNA replication, and the pentose phosphate pathway. Conclusion Our results reveal a close correlation between TP53I13 and gliomas. Further, TP53I13 expression could affect the survival outcomes in glioma patients. In addition, TP53I13 was an independent marker that was crucial in regulating the infiltration of immune cells into tumors. As a result of these findings, TP53I13 might represent a new biomarker of immune infiltration and prognosis in patients with gliomas.
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Affiliation(s)
- Xinqi Ge
- Department of Clinical Biobank & Institute of Oncology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
- Medical School of Nantong University, Nantong, China
| | - Manyu Xu
- Department of Clinical Biobank & Institute of Oncology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
- Medical School of Nantong University, Nantong, China
| | - Tong Cheng
- Department of Clinical Biobank & Institute of Oncology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
- Medical School of Nantong University, Nantong, China
| | - Nan Hu
- Medical School of Nantong University, Nantong, China
| | - Pingping Sun
- Department of Clinical Biobank & Institute of Oncology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Bing Lu
- Department of Clinical Biobank & Institute of Oncology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Ziheng Wang
- Department of Clinical Biobank & Institute of Oncology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
- *Correspondence: Jian Li, ; Ziheng Wang,
| | - Jian Li
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
- *Correspondence: Jian Li, ; Ziheng Wang,
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Xie D, Pei Q, Li J, Wan X, Ye T. Emerging Role of E2F Family in Cancer Stem Cells. Front Oncol 2021; 11:723137. [PMID: 34476219 PMCID: PMC8406691 DOI: 10.3389/fonc.2021.723137] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 07/27/2021] [Indexed: 12/14/2022] Open
Abstract
The E2F family of transcription factors (E2Fs) consist of eight genes in mammals. These genes encode ten proteins that are usually classified as transcriptional activators or transcriptional repressors. E2Fs are important for many cellular processes, from their canonical role in cell cycle regulation to other roles in angiogenesis, the DNA damage response and apoptosis. A growing body of evidence demonstrates that cancer stem cells (CSCs) are key players in tumor development, metastasis, drug resistance and recurrence. This review focuses on the role of E2Fs in CSCs and notes that many signals can regulate the activities of E2Fs, which in turn can transcriptionally regulate many different targets to contribute to various biological characteristics of CSCs, such as proliferation, self-renewal, metastasis, and drug resistance. Therefore, E2Fs may be promising biomarkers and therapeutic targets associated with CSCs pathologies. Finally, exploring therapeutic strategies for E2Fs may result in disruption of CSCs, which may prevent tumor growth, metastasis, and drug resistance.
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Affiliation(s)
- Dan Xie
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan, China
| | - Qin Pei
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan, China
| | - Jingyuan Li
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan, China
| | - Xue Wan
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan, China
| | - Ting Ye
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan, China
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Flindris S, Katsoulas N, Goussia A, Lazaris AC, Navrozoglou I, Paschopoulos M, Thymara I. The Expression of NRIP1 and LCOR in Endometrioid Endometrial Cancer. In Vivo 2021; 35:2631-2640. [PMID: 34410950 DOI: 10.21873/invivo.12545] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/15/2021] [Accepted: 06/24/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND The aim of the study was to analyze the expression of nuclear receptor interacting protein 1 (NRIP1) and its partner ligand-dependent nuclear receptor co-repressor (LCOR) in endometrioid endometrial cancer and to investigate their association with estrogen receptor (ER), progesterone receptor (PR), Ki-67, clinicopathological parameters and patient survival. MATERIALS AND METHODS Immunohistochemical evaluation was carried out to investigate the subcellular expression of NRIP1 and LCOR in endometrioid endometrial cancer samples. Statistical analysis was used to identify the correlations of NRIP1 and LCOR expression with clinicopathological variables and to estimate the survival rates. RESULTS Endometrial cancer tissues exhibited higher expression of NRIP1 and LCOR in comparison with the normal tissues. Cytoplasmic LCOR expression was positively associated with ER and PR expression, while cytoplasmic NRIP1 expression was positively associated with ER expression. Moreover, cytoplasmic expression of NRIP1 was positively associated with Ki-67. CONCLUSION Our study demonstrated that high cytoplasmic expression of LCOR may predict a longer overall survival of patients with endometrioid endometrial cancer. Patients with tumors expressing low levels of LCOR showed a worse survival compared to those expressing high levels.
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Affiliation(s)
- Stefanos Flindris
- Department of Obstetrics and Gynecology, University Hospital of Ioannina, Ioannina, Greece;
| | - Nikolaos Katsoulas
- First Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Laiko General Hospital of Athens, Athens, Greece
| | - Anna Goussia
- Department of Pathology, University Hospital of Ioannina, Ioannina, Greece
| | - Andreas Christos Lazaris
- First Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Laiko General Hospital of Athens, Athens, Greece
| | - Iordanis Navrozoglou
- Department of Obstetrics and Gynecology, University Hospital of Ioannina, Ioannina, Greece
| | - Minas Paschopoulos
- Department of Obstetrics and Gynecology, University Hospital of Ioannina, Ioannina, Greece
| | - Irene Thymara
- First Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Laiko General Hospital of Athens, Athens, Greece
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Chen C, Zheng Q, Pan S, Chen W, Huang J, Cao Y, Tu Y, Li Z, Yu C, Jie Z. The RNA-Binding Protein NELFE Promotes Gastric Cancer Growth and Metastasis Through E2F2. Front Oncol 2021; 11:677111. [PMID: 34295816 PMCID: PMC8290256 DOI: 10.3389/fonc.2021.677111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 06/09/2021] [Indexed: 12/15/2022] Open
Abstract
Worldwide, the incidence rate of gastric cancer ranks fifth, and the mortality rate of gastric cancer ranks third among all malignant tumors. However, the pathogenesis of gastric cancer remains poorly understood. In this study, we demonstrated that the expression level of NELFE is higher in human gastric cancer tissues than in adjacent nontumor tissues. A high level of NELFE is associated with worse postoperative overall survival (OS) and relapse-free survival (RFS) rates in patients with gastric cancer. Moreover, the expression of NELFE is correlated with high tumor grade and lymph node metastasis in gastric cancer patients. Knockdown of NELFE dramatically inhibits the cell proliferation and metastasis of gastric cancer xenografts in vivo. Furthermore, we found that NELFE binding to the 3'UTR of E2F2 affects the mRNA stability of E2F2 to regulate the expression level of E2F2. In gastric cancer, E2F2 also acts as an oncogene to inhibit the proliferation and migration of gastric cancer cells by knocking down the expression level of E2F2. However, overexpressing E2F2 in cells with NELFE knockdown significantly reverses the inhibition of cell proliferation and migration induced by NELFE knockdown. Therefore, NELFE at least partially functions as an oncogene through E2F2. Moreover, CIBERSORTx analysis of the proportion of tumor-infiltrating immune cells (TICs) revealed that immune cells are correlated with NELFE and E2F2 expression, suggesting that NELFE and E2F2 might be responsible for the preservation of the immunodominant status for gastric cancer. In conclusion, NELFE acts as an oncogene in gastric cancer and can be used as a potential therapeutic target.
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Affiliation(s)
- Changyu Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qiang Zheng
- Department of Anesthesiology (High-Tech Branch), The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Shubo Pan
- Department of General Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Wenzheng Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jianfeng Huang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yi Cao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yi Tu
- Department of Pathology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhengrong Li
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Changjun Yu
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Zhigang Jie
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
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