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El Mashad SN, Kandil MAEH, Talab TAEH, Saied Abd El Naby AEN, Sultan MM, Sohaib A, Hemida AS. Gastric Carcinoma with low ROR alpha, low E- Cadherin and High LAPTM4B Immunohistochemical Profile; is associated with unfavorable prognosis in Egyptian patients. J Immunoassay Immunochem 2024; 45:50-72. [PMID: 38031398 DOI: 10.1080/15321819.2023.2279639] [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] [Indexed: 12/01/2023]
Abstract
In view of multiplicity of carcinogenic pathways of gastric carcinoma (GC), poor survival and chemotherapy resistance, more analysis of these pathways is required for prediction of prognosis and developing new therapeutic targets. Knocking down of RORα; induces tumor cell proliferation and epithelial-mesenchymal transition (EMT). LAPTM4B has been suggested to be associated with EMT which promote tumor invasion. This work aimed to investigate prognostic role of RORα, LAPTM4B, and E-Cadherin expression in GC. This retrospective immunohistochemical study assesses the expression of RORα, LAPTM4B, and E-Cadherin in 73 primary gastric carcinomas. Low RORα and high LAPTM4B expression in GC cases were associated with unfavorable prognostic factors such as positive lymph nodes, and high tumor budding. E-Cadherin heterogeneous staining was associated with poor prognostic criteria, such as diffuse type GC and high tumor budding. Low RORα, high LAPTM4B, and heterogeneous E-Cadherin were the most common immunohistochemical profile in GC cases. Low RORα expression showed poor prognostic impact on overall patient survival. In conclusion, RORα and LAPTM4B may have crucial role in GC aggressiveness. The predominance of low RORα, high LAPTM4B, and heterogeneous or negative E-Cadherin immunohistochemical profile in GC cases with unfavorable pathological parameters suggested that this profile may predict tumor behavior.
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Affiliation(s)
| | | | | | | | - Mervat Mahmoud Sultan
- Pathology Department, National Liver Institute, Menoufia University, Shebin El Kom, Egypt
| | - Ahmed Sohaib
- Clinical Oncology& Nuclear medicine Department, Faculty of Medicine, Menoufia University, Shebin El Kom, Egypt
| | - Aiat Shaban Hemida
- Pathology Department, Faculty of Medicine, Menoufia University, Shebin El Kom, Egypt
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2
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Diao B, Sun C, Yu P, Zhao Z, Yang P. LAMA5 promotes cell proliferation and migration in ovarian cancer by activating Notch signaling pathway. FASEB J 2023; 37:e23109. [PMID: 37527216 DOI: 10.1096/fj.202300306r] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 06/18/2023] [Accepted: 07/12/2023] [Indexed: 08/03/2023]
Abstract
LAMA5 (laminin α5) is a member of the laminin family. Despite the recent research implicating LAMA5 in cancer, the function of LAMA5 has remained uncertain in the progression of ovarian cancer (OC). Here, we investigated the functional influences of LAMA5 knockdown on OC in vitro and in vivo. In this study, we used immunohistochemistry (IHC) analysis to detect the relative expression of LAMA5 in OC and non-cancer tissues, and we analyzed its connection with the overall survival (OS) of OC patients. To prove the role of LAMA5 in cell proliferation, migration, and invasion, LAMA5 expression in OC cell lines was inhibited by lentivirus. Compared with normal fallopian tube tissue, epithelial ovarian cancer (EOC) tissue showed critically higher LAMA5 expression levels; additionally, high LAMA5 levels were a poor predictor of OS. We found that cell progression was restrained in LAMA5-knockdown OC cell lines in vivo and in vitro. Finally, LAMA5 might be a commanding inducer of the expression of epithelial-mesenchymal transition (EMT) and Notch signaling pathway-related markers. Together, our research indicates that LAMA5 is highly connected to OC progression as it may play a role in the EMT process through the Notch signaling pathway.
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Affiliation(s)
- Bowen Diao
- Department of Gynecology, First Affiliated Hospital, Shihezi University, Shihezi, China
- The NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, Shihezi University, Shihezi, China
| | - Chongfeng Sun
- Department of Gynecology, First Affiliated Hospital, Shihezi University, Shihezi, China
- The NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, Shihezi University, Shihezi, China
| | - Panpan Yu
- Department of Gynecology, First Affiliated Hospital, Shihezi University, Shihezi, China
- The NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, Shihezi University, Shihezi, China
| | - Zouyu Zhao
- Department of Gynecology, First Affiliated Hospital, Shihezi University, Shihezi, China
- The NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, Shihezi University, Shihezi, China
| | - Ping Yang
- Department of Gynecology, First Affiliated Hospital, Shihezi University, Shihezi, China
- The NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, Shihezi University, Shihezi, China
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3
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Ge L, Zhao G, Lan C, Song H, Qi D, Huang P, Ke X, Cui H. MESP2 binds competitively to TCF4 to suppress gastric cancer progression by regulating the SKP2/p27 axis. Cell Death Discov 2023; 9:79. [PMID: 36854722 PMCID: PMC9975210 DOI: 10.1038/s41420-023-01367-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 03/02/2023] Open
Abstract
Gastric cancer (GC) is a major cause of human deaths worldwide, and is notorious for its high incidence and mortality rates. Mesoderm Posterior Basic Helix-loop-helix (bHLH) transcription factor 2 (MESP2) acts as a transcription factor with a conserved bHLH domain. However, whether MESP2 contributes to tumorigenesis and its potential molecular mechanisms, remain unexplored. Noticeably, MESP2 expression levels are decreased in GC tissues and cell lines compared to those in normal tissue. Further, in vitro and in vivo experiments have confirmed that MESP2 overexpression suppresses GC cell growth, migration, and invasion, whereas MESP2 knockdown results in the exact opposite. Here, we present the first report that MESP2 binds to transcription factor 7-like 2 (TCF7L2/TCF4) to inhibit the activation of the TCF4/beta-catenin transcriptional complex, decrease the occupancy of the complex on the S-phase kinase Associated Protein 2 (SKP2) promoter, and promote p27 accumulation. MESP2 knockdown facilitated tumorigenesis, which was partially suppressed by SKP2 knockdown. Taken together, we conclude that MESP2 binds competitively to TCF4 to suppress GC progression by regulating the SKP2/p27 axis, thus offering a potential therapeutic strategy for future treatment.
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Affiliation(s)
- Lingjun Ge
- grid.263906.80000 0001 0362 4044State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716 China
| | - Gaichao Zhao
- grid.263906.80000 0001 0362 4044State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716 China
| | - Chao Lan
- grid.263906.80000 0001 0362 4044State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716 China
| | - Houji Song
- grid.263906.80000 0001 0362 4044Cancer Center, Medical Research Institute, Southwest University, Chongqing, 400716 China
| | - Dan Qi
- grid.263906.80000 0001 0362 4044Cancer Center, Medical Research Institute, Southwest University, Chongqing, 400716 China
| | - Pan Huang
- grid.263906.80000 0001 0362 4044State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716 China
| | - Xiaoxue Ke
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China. .,Cancer Center, Medical Research Institute, Southwest University, Chongqing, 400716, China.
| | - Hongjuan Cui
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China. .,Cancer Center, Medical Research Institute, Southwest University, Chongqing, 400716, China.
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4
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Xiao W, Geng W, Zhou M, Xu J, Wang S, Huang Q, Sun Y, Li Y, Yang G, Jin Y. POU6F1 cooperates with RORA to suppress the proliferation of lung adenocarcinoma by downregulation HIF1A signaling pathway. Cell Death Dis 2022; 13:427. [PMID: 35504868 PMCID: PMC9065044 DOI: 10.1038/s41419-022-04857-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 04/08/2022] [Accepted: 04/13/2022] [Indexed: 12/14/2022]
Abstract
Lung adenocarcinoma (LUAD) represents the most frequently diagnosed histological subtype of non-small cell lung cancer with the highest mortality worldwide. Transcriptional dysregulation is a hallmark of nearly all kinds of cancers. In the study, we identified that the POU domain, class 6, transcription factor 1 (POU6F1), a member of the POU family of transcription factors, was closely associated with tumor stage and death in LUAD. We revealed that POU6F1 was downregulated in LUAD tissues and downregulated POU6F1 was predictive of an unfavorable prognosis in LUAD patients. In vitro assays, including CCK8, soft agar, transwell, clone formation, wound-healing assay, and nude mouse xenograft model all revealed that POU6F1 inhibited the growth and invasion of LUAD cells. Mechanistically, POU6F1 bound and stabilized retinoid-related orphan receptor alpha (RORA) to exert the transcriptional inhibition of hypoxia-inducible factor 1-alpha (HIF1A) and alter the expression of HIF1A signaling pathway-associated genes, including ENO1, PDK1, and PRKCB, thereby leading to the suppression of LUAD cells. Collectively, these results demonstrated the suppressive role of POU6F1/RORA in the progression of LUAD and may potentially be used as a target for the treatment of LUAD.
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Affiliation(s)
- Wenjing Xiao
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022 Hubei China
| | - Wei Geng
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022 Hubei China
| | - Mei Zhou
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022 Hubei China
| | - Juanjuan Xu
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022 Hubei China
| | - Sufei Wang
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022 Hubei China
| | - Qi Huang
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022 Hubei China
| | - Yice Sun
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022 Hubei China
| | - Yumei Li
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022 Hubei China
| | - Guanghai Yang
- grid.33199.310000 0004 0368 7223Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022 China
| | - Yang Jin
- grid.33199.310000 0004 0368 7223Department of Respiratory and Critical Care Medicine, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022 Hubei China
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5
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Li Y, He J, Yu L, Yang Q, Du J, Chen Y, Tang W. Hsa‐miR‐1290 is associated with stemness and invasiveness in prostate cancer cell lines by targeting RORA. Andrologia 2022; 54:e14396. [PMID: 35220610 DOI: 10.1111/and.14396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 01/19/2022] [Accepted: 01/21/2022] [Indexed: 11/30/2022] Open
Affiliation(s)
- Yuehua Li
- Department of Nephrology and Urology University‐Town Hospital of Chongqing Medical University Chongqing China
| | - Jiang He
- Department of Nephrology and Urology University‐Town Hospital of Chongqing Medical University Chongqing China
| | - Lu Yu
- Department of Nephrology and Urology University‐Town Hospital of Chongqing Medical University Chongqing China
| | - Qixin Yang
- Department of Nephrology and Urology University‐Town Hospital of Chongqing Medical University Chongqing China
| | - Jing Du
- Department of Anesthesiology University‐Town Hospital of Chongqing Medical University Chongqing China
| | - Yirong Chen
- Department of Nephrology and Urology University‐Town Hospital of Chongqing Medical University Chongqing China
| | - Wei Tang
- Department of Urology The First Affiliated Hospital of Chongqing Medical University Chongqing China
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6
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Zhang J, Li Q, Sun Q, Wang B, Cui Y, Lou C, Yao Y, Zhang Y. Epigenetic modifications inhibit the expression of MARVELD1 and in turn tumorigenesis by regulating the Wnt/β-catenin pathway in pan-cancer. J Cancer 2022; 13:225-242. [PMID: 34976185 PMCID: PMC8692698 DOI: 10.7150/jca.63608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 11/21/2021] [Indexed: 12/15/2022] Open
Abstract
MARVEL domain-containing 1 (MARVELD1) is one of the MARVEL domain-containing proteins. Expression of MARVELD1 in tumor and non-tumor tissues, the relationship between its expression and cancer prognosis, and upstream regulation of MARVELD1 were examined using pan-cancer data from The Cancer Genome Atlas. MARVELD1 expression was significantly downregulated in tissues used for pan-cancer analysis compared to that in normal tissues. Low expression of MARVELD1 was associated with poor disease outcomes in pan-cancer. Colon cancer patients with low expression of MARVELD1 had worse progression free survival and overall survival than those with high expression levels in our cohort. Hypermethylation and histone modification in the MARVELD1 promoter locus synergistically affected its expression in pan-cancer. The function of MARVELD1 in colon cancer remains to be studied. Gene Ontology enrichment analysis revealed that MARVELD1 may modulate processes associated with inhibition of tumorigenesis in colon cancer. Both upstream transcription factors and downstream functional enrichment of MARVELD1 were related to the Wnt/β-catenin signaling pathway. Overexpression of MARVELD1 inhibited the expression of β-catenin and its entry into the nucleus. MARVELD1 also inhibited the proliferation, migration, and invasion of colon cancer cells. With Wnt/β-catenin activator LiCl treatment, rescue experiments demonstrated that the role of MARVELD1 in colon cancer progression was dependent on the Wnt/β-catenin pathway. These results indicate that MARVELD1 acts as a tumor suppressor and inhibits tumorigenesis via the Wnt/β-catenin pathway.
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Affiliation(s)
- Jingchun Zhang
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang Province, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, Heilongjiang Province, China
| | - Qingwei Li
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang Province, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, Heilongjiang Province, China
| | - Qinliang Sun
- Department of Ultrasound, Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Bojun Wang
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang Province, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, Heilongjiang Province, China
| | - Ying Cui
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang Province, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, Heilongjiang Province, China
| | - Changjie Lou
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang Province, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, Heilongjiang Province, China
| | - Yuanfei Yao
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang Province, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, Heilongjiang Province, China
| | - Yanqiao Zhang
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang Province, China
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7
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Astone M, Santoro MM. Time to fight: targeting the circadian clock molecular machinery in cancer therapy. Drug Discov Today 2021; 26:1164-1184. [PMID: 33549826 DOI: 10.1016/j.drudis.2021.01.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/23/2020] [Accepted: 01/22/2021] [Indexed: 02/06/2023]
Abstract
The circadian clock regulates a wide range of molecular pathways and biological processes. The expression of clock genes is often altered in cancer, fostering tumor initiation and progression. Inhibition and activation of core circadian clock genes, as well as treatments that restore circadian rhythmicity, have been successful in counteracting tumor growth in different experimental models. Here, we provide an up-to-date overview of studies that show the therapeutic effects of targeting the clock molecular machinery in cancer, both genetically and pharmacologically. We also highlight future areas for progress that offer a promising path towards innovative anticancer strategies. Substantial limitations in the current understanding of the complex interplay between the circadian clock and cancer in vivo need to be addressed in order to allow clock-targeting therapies in cancer.
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Affiliation(s)
- Matteo Astone
- Department of Biology, University of Padova, I-35131, Italy
| | - Massimo M Santoro
- Department of Biology, University of Padova, I-35131, Italy; Venetian Institute of Molecular Medicine, Via Orus 2, 35129 Padova, Italy.
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8
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The Future of Anticancer Drugs: A Cytotoxicity Assessment Study of CdSe/ZnS Quantum Dots. JOURNAL OF NANOTHERANOSTICS 2020. [DOI: 10.3390/jnt1010003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Quantum dots (QDs), including CdSe/ZnS, are nanoparticles emitting various wavelengths of fluorescent light depending on their size. Fluorescence allows them to be exploited for in vivo sensing/imaging of cancer cells. Nevertheless, thorough assessments of the effects of these commonly used QDs on cell stability are essentially required prior to their full applications. To investigate the effects of Cd QDs on the growth of human cervical cancer cells (HeLa), we utilized a growth assay, a reactive oxygen species (ROS) assay, an apoptosis assay, and RNA-seq. The growth assay results showed significant proliferation inhibition of HeLa cells by CdSe/ZnS. We revealed that smaller green CdSe/ZnS exerts more toxic effects than slightly larger yellow CdSe/ZnS. There were no significant increases of ROSs under the treatment of Cd QDs, which is consistent with the notion that low concentration of Cd QDs does not cause significant production of ROSs. In addition, we found that Cd QDs induced late apoptosis. RNA-Seq-based transcriptome analysis revealed that the exposure to green Cd QDs significantly upregulated antiapoptotic, antiproliferative, and antitumorigenic functions. The transcriptome profile also noted the downregulation of pro-proliferation, mitochondrial respiratory chain, detoxification, and receptor-mediated endocytosis. Taken together, our findings provide evidence that green CdSe/ZnS can be an alternative anticancer drug. In addition, our transcriptome analysis provides new insights into alteration of physiological state induced by CdSe/ZnS QDs in HeLa cancer cells.
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Sun D, Wang G, Xiao C, Xin Y. Hsa_circ_001988 attenuates GC progression in vitro and in vivo via sponging miR-197-3p. J Cell Physiol 2020; 236:612-624. [PMID: 32592202 DOI: 10.1002/jcp.29888] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 05/11/2020] [Accepted: 06/03/2020] [Indexed: 12/15/2022]
Abstract
Hsa_circ_001988 has been identified as a tumor suppressor gene in several carcinomas. However, its expression pattern and role in gastric cancer (GC) have still remained elusive. This study aimed to explore the functions of hsa_circ_001988 in GC. Quantitative reverse transcription polymerase chain reaction assay was performed to assess the expressions of hsa_circ_001988, miR-197-3p, FBXW7, CCDC6, and U2AF65 in GC tissues. The correlation analysis was undertaken to find out the relationship between hsa_circ_001988 expression and clinicopathological factors. A series of cellular experiments were carried out to describe the effects of hsa_circ_001988 on GC in vivo and in vitro. Besides, RNA immunoprecipitation (RIP) assay was performed to verify the relationship among EIF4A3, U2AF65, and hsa_circ_001988. We first found that the expression of hsa_circ_001988 was decreased in 341 GC patients that was related to World Health Organization histological types, Lauren types, and tumor invasion depth (p < .05). Silencing of hsa_circ_001988 facilitated proliferation, colony formation, migration, and invasion of GC cells, while overexpression of hsa_circ_001988 reversed the effect on GC progression in vitro. Additionally, the results of subcutaneous xenotransplanted tumor model demonstrated that overexpressing hsa_circ_001988 significantly suppressed the subcutaneous tumor growth in vivo. Mechanistically, hsa_circ_001988 attenuated the miR-197-3p expression possibly due to its molecular sponge effect, and then, positively promoted FBXW7 expression. Afterwards, FBXW7 regulated the expressions of yes-associated protein 1, cyclinD1, CCDC6, and EMT-related proteins. Notably, RIP assay showed the enrichment relationship among EIF4A3, U2AF65, and hsa_circ_001988. Additionally, EIF4A3 or U2AF65 promoted cyclization of hsa_circ_001988 in GC. Hsa_circ_001988 inhibits the proliferation and metastasis of GC via modulating EIF4A3/U2AF65-mediated hsa_circ_001988/miR-197-3p/FBXW7 axis.
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Affiliation(s)
- Dan Sun
- Laboratory of Gastrointestinal Onco-Pathology, Cancer Institute and General Surgery Institute, The First Affiliated Hospital of China Medical University, Heping, Shenyang, Liaoning, China
| | - Gang Wang
- Laboratory of Gastrointestinal Onco-Pathology, Cancer Institute and General Surgery Institute, The First Affiliated Hospital of China Medical University, Heping, Shenyang, Liaoning, China
| | - Chang Xiao
- Laboratory of Gastrointestinal Onco-Pathology, Cancer Institute and General Surgery Institute, The First Affiliated Hospital of China Medical University, Heping, Shenyang, Liaoning, China
| | - Yan Xin
- Laboratory of Gastrointestinal Onco-Pathology, Cancer Institute and General Surgery Institute, The First Affiliated Hospital of China Medical University, Heping, Shenyang, Liaoning, China
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10
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Regulation of Wnt Signaling through Ubiquitination and Deubiquitination in Cancers. Int J Mol Sci 2020; 21:ijms21113904. [PMID: 32486158 PMCID: PMC7311976 DOI: 10.3390/ijms21113904] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 12/11/2022] Open
Abstract
The Wnt signaling pathway plays important roles in embryonic development, homeostatic processes, cell differentiation, cell polarity, cell proliferation, and cell migration via the β-catenin binding of Wnt target genes. Dysregulation of Wnt signaling is associated with various diseases such as cancer, aging, Alzheimer’s disease, metabolic disease, and pigmentation disorders. Numerous studies entailing the Wnt signaling pathway have been conducted for various cancers. Diverse signaling factors mediate the up- or down-regulation of Wnt signaling through post-translational modifications (PTMs), and aberrant regulation is associated with several different malignancies in humans. Of the numerous PTMs involved, most Wnt signaling factors are regulated by ubiquitination and deubiquitination. Ubiquitination by E3 ligase attaches ubiquitins to target proteins and usually induces proteasomal degradation of Wnt signaling factors such as β-catenin, Axin, GSK3, and Dvl. Conversely, deubiquitination induced by the deubiquitinating enzymes (DUBs) detaches the ubiquitins and modulates the stability of signaling factors. In this review, we discuss the effects of ubiquitination and deubiquitination on the Wnt signaling pathway, and the inhibitors of DUBs that can be applied for cancer therapeutic strategies.
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