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Shu C, Hou L, Chen Q, Zhu T, Yang J, Luo X, Su Y, Wang Y. Irradiation with a red light-emitting diode enhances the proliferation of stem cells of apical papilla via the ERK5 signalling pathway. Lasers Med Sci 2022; 37:2259-2268. [PMID: 35022873 DOI: 10.1007/s10103-021-03492-x] [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: 07/20/2021] [Accepted: 12/06/2021] [Indexed: 11/27/2022]
Abstract
This Querystudy aimed to investigate the effects of low-energy red light-emitting diode (LED) irradiation on the proliferation of stem cells from apical papilla (SCAPs) and preliminarily elucidated the underlying molecular mechanisms. SCAPs were isolated and identified in vitro. The light source was a 10 W red LED with continuous output and a wavelength of 600-700 nm. SCAPs were irradiated with 0 (control group), 0.5 J/cm2, 1 J/cm2, 3 J/cm2, or 5 J/cm2. Cell Counting Kit-8 (CCK-8) assays were used to analyze cell proliferation rates and determine the most effective concentration of extracellular signal-regulated kinase 5 (ERK5) blocker, BIX02189. A real-time polymerase chain reaction (RT-PCR) was carried out to determine the involvement of the ERK5 signalling pathway and proliferation-associated genes (C-Jun, Jun B, and Cyclin D1). 5-Ethynyl-2'-deoxyuridine (EDU) was used to analyze cell cycle kinetic parameters. CCK-8 assay results suggested that SCAPs in red LED groups exhibited a higher proliferation rate than those in the control group, and 10 μmol/L BIX02189 was the most effective blocker. The RT-PCR results demonstrate that red LEDs upregulated the expression of the ERK5, C-Jun, Jun B, and Cyclin D1 genes, and BIX02189 successfully blocked the ERK5 signalling pathway. The results of EdU staining indicated that red LED promoted DNA synthesis activity and that BIX02189 suppressed cells into S phase. Red LEDs irradiation enhances the proliferation of SCAPs via the ERK5 signalling pathway by upregulating the expression of C-Jun, Jun B, and Cyclin D1.
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Affiliation(s)
- Chunxia Shu
- School of Stomatology Southwest Medical University, Lu Zhou, 646000, China
- Suining First People's Hospital, Suining, 629000, China
| | - Lan Hou
- School of Stomatology Southwest Medical University, Lu Zhou, 646000, China
| | - Qiang Chen
- The TCM Hospital of Longquanyi District, Chengdu, 610100, China
| | - Tingting Zhu
- School of Stomatology of Qingdao University, Qingdao, 266003, China
| | - Juan Yang
- School of Stomatology Southwest Medical University, Lu Zhou, 646000, China
| | - Xiang Luo
- School of Stomatology Southwest Medical University, Lu Zhou, 646000, China
| | - Yutong Su
- School of Stomatology Southwest Medical University, Lu Zhou, 646000, China
| | - Yao Wang
- The Affiliated Stomatology Hospital of Southwest Medical University, Lu Zhou, 646000, China.
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Jia W, Ding W, Chen X, Xu Z, Tang Y, Wang M, Zheng B, Zhang Y, Wei T, Zhu Z. Selenium-Containing Compound Ameliorates Lipopolysaccharide-Induced Acute Lung Injury via Regulating the MAPK/AP-1 Pathway. Inflammation 2021; 44:2518-2530. [PMID: 34487287 DOI: 10.1007/s10753-021-01521-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 07/13/2021] [Indexed: 02/05/2023]
Abstract
Abstract-Acute lung injury (ALI) is characterized by a series of inflammatory reactions and serves as the main cause of mortality in intensive care unit patients. Although great progress has been made in understanding the pathophysiology of ALI, there are no effective treatments in clinic. Recently, we have synthesized a selenium-containing compound, which possesses obvious anti-inflammatory activity. The aim of the present study is to evaluate the protective effects of the selenium-containing compound 34# in LPS-induced ALI in mice as well as its underlying mechanism. Compound 34# was found to inhibit LPS-induced macrophage inflammatory cytokine release. These effects were observed to be produced via suppression of the MAPK/AP-1 pathway. Compound 34# was also noted to attenuate the LPS-induced lung inflammation in mice with ALI. The corresponding results suggested that compound 34# possesses remarkable protective effects on LPS-induced ALI. Furthermore, the MAPK/AP-1 pathway may prove to be the underlying mechanism. Accordingly, compound 34# may serve as a potential candidate for the prevention of ALI.
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Affiliation(s)
- Wenjing Jia
- Medicine and Health Care Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Wenting Ding
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Xinmiao Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Zhengwei Xu
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Yelin Tang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Meihong Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Bin Zheng
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Yali Zhang
- Medicine and Health Care Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Tao Wei
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China.
| | - Zaisheng Zhu
- Medicine and Health Care Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, Zhejiang, China.
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Arnoff TE, El-Deiry WS. CDKN1A/p21 WAF1, RB1, ARID1A, FLG, and HRNR mutation patterns provide insights into urinary tract environmental exposure carcinogenesis and potential treatment strategies. Am J Cancer Res 2021; 11:5452-5471. [PMID: 34873472 PMCID: PMC8640812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023] Open
Abstract
Bladder carcinoma has a 6% 5-year survival-rate for metastatic disease, with poorly understood links between genetic and environmental drivers of disease development, progression, and treatment response. Rhode Island has among the highest annual age-adjusted incidence rate of bladder cancer at 26.0/100,000, compared to 20.0 in the US, with a paucity of known driver genes for targeted therapies or predictive biomarkers. Bladder carcinomas have the highest frequency of alterations in CDKN1A/p21WAF1 (10%) across all cancer types analyzed in The Cancer Genome Atlas (TCGA) PanCancer Atlas Studies, displaying a predominance of truncating mutations (86%). We found that lung carcinomas lack CDKN1A truncating mutations, despite the shared role of tobacco as a risk factor for bladder cancer. Bladder carcinomas also have the highest frequency of RB1 alterations in TCGA (25%). We find that chromophobe renal cell carcinomas with CDKN1A and RB1 mutations are 100% truncating. Analysis of 1,868 bladder tumors demonstrated that truncating CDKN1A mutations co-occur with truncating RB1 mutations, suggesting an environmental exposure signature. Moreover, we found that HRNR and FLG mutations are enriched in tumors with CDKN1A alteration, suggesting potential novel roles in promoting bladder tumorigenesis. Association of HRNR with AKT activation offers possible therapeutic avenues, and FLG may provide insight into carcinogen exposure within the bladder. We suggest that because APOBEC mutations largely shape the bladder cancer mutational landscape, these events likely contribute to dysfunctional DNA repair genes, leading to frameshifts and the predominance of truncations in CDKN1A, RB1, ARID1A, or other drivers. We propose that patients with co-occurrence of CDKN1A and RB1 truncations may display enhanced responsiveness to targeted therapies combining cisplatin with ATR, ATM, CHK1, and CHK2 inhibitors, expanding therapeutic options for patients in need of improved precision treatments.
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Affiliation(s)
- Taylor E Arnoff
- Laboratory of Translational Oncology and Experimental Cancer Therapeutics, The Warren Alpert Medical School, Brown UniversityProvidence, RI, USA
| | - Wafik S El-Deiry
- Laboratory of Translational Oncology and Experimental Cancer Therapeutics, The Warren Alpert Medical School, Brown UniversityProvidence, RI, USA
- Hematology/Oncology Division, Department of Medicine, Lifespan Health System and The Warren Alpert Medical School, Brown UniversityProvidence, RI, USA
- The Joint Program in Cancer Biology, Lifespan Health System and The Warren Alpert Medical School, Brown UniversityProvidence, RI, USA
- Cancer Center at Brown University, The Warren Alpert Medical School, Brown UniversityProvidence, RI, USA
- Department of Pathology and Laboratory Medicine, Lifespan Health System and The Warren Alpert Medical School, Brown UniversityProvidence, RI, USA
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Zhang F, Wang X, Bai Y, Hu H, Yang Y, Wang J, Tang Y, Ma H, Feng D, Li D, Han P. Development and Validation of a Hypoxia-Related Signature for Predicting Survival Outcomes in Patients With Bladder Cancer. Front Genet 2021; 12:670384. [PMID: 34122523 PMCID: PMC8188560 DOI: 10.3389/fgene.2021.670384] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 04/06/2021] [Indexed: 02/05/2023] Open
Abstract
Objectives This study aimed to develop and validate a hypoxia signature for predicting survival outcomes in patients with bladder cancer. Methods We downloaded the RNA sequence and the clinicopathologic data of the patients with bladder cancer from The Cancer Genome Atlas (TCGA) (https://portal.gdc.cancer.gov/repository?facetTab=files) and the Gene Expression Omnibus (GEO) (https://www.ncbi.nlm.nih.gov/geo/) databases. Hypoxia genes were retrieved from the Molecular Signatures Database (https://www.gsea-msigdb.org/gsea/msigdb/index.jsp). Differentially expressed hypoxia-related genes were screened by univariate Cox regression analysis and Lasso regression analysis. Then, the selected genes constituted the hypoxia signature and were included in multivariate Cox regression to generate the risk scores. After that, we evaluate the predictive performance of this signature by multiple receiver operating characteristic (ROC) curves. The CIBERSORT tool was applied to investigate the relationship between the hypoxia signature and the immune cell infiltration, and the maftool was used to summarize and analyze the mutational data. Gene-set enrichment analysis (GSEA) was used to investigate the related signaling pathways of differentially expressed genes in both risk groups. Furthermore, we developed a model and presented it with a nomogram to predict survival outcomes in patients with bladder cancer. Results Eight genes (AKAP12, ALDOB, CASP6, DTNA, HS3ST1, JUN, KDELR3, and STC1) were included in the hypoxia signature. The patients with higher risk scores showed worse overall survival time than the ones with lower risk scores in the training set (TCGA) and two external validation sets (GSE13507 and GSE32548). Immune infiltration analysis showed that two types of immune cells (M0 and M1 macrophages) had a significant infiltration in the high-risk group. Tumor mutation burden (TMB) analysis showed that the risk scores between the wild types and the mutation types of TP53, MUC16, RB1, and FGFR3 were significantly different. Gene-Set Enrichment Analysis (GSEA) showed that immune or cancer-associated pathways belonged to the high-risk groups and metabolism-related signal pathways were enriched into the low-risk group. Finally, we constructed a predictive model with risk score, age, and stage and validated its performance in GEO datasets. Conclusion We successfully constructed and validated a novel hypoxia signature in bladder cancer, which could accurately predict patients’ prognosis.
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Affiliation(s)
- Facai Zhang
- Department of Urology, West China Hospital, Institute of Urology, Sichuan University, Chengdu, China.,Department of Urology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Xiaoming Wang
- Department of Urology, West China Hospital, Institute of Urology, Sichuan University, Chengdu, China
| | - Yunjin Bai
- Department of Urology, West China Hospital, Institute of Urology, Sichuan University, Chengdu, China
| | - Huan Hu
- School of Clinical Medicine, Guizhou Medical University, Guiyang, China
| | - Yubo Yang
- Department of Urology, West China Hospital, Institute of Urology, Sichuan University, Chengdu, China
| | - Jiahao Wang
- Department of Urology, West China Hospital, Institute of Urology, Sichuan University, Chengdu, China
| | - Yin Tang
- Department of Urology, West China Hospital, Institute of Urology, Sichuan University, Chengdu, China
| | - Honggui Ma
- Department of Urology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Dechao Feng
- Department of Urology, West China Hospital, Institute of Urology, Sichuan University, Chengdu, China
| | - Dengxiong Li
- Department of Urology, West China Hospital, Institute of Urology, Sichuan University, Chengdu, China
| | - Ping Han
- Department of Urology, West China Hospital, Institute of Urology, Sichuan University, Chengdu, China.,The Second People's Hospital of Yibin, Yibin, China
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Chao Y, Ou Q, Shang J. Expression and prognostic value of SULT1A2 in bladder cancer. Exp Ther Med 2021; 22:779. [PMID: 34055078 PMCID: PMC8145616 DOI: 10.3892/etm.2021.10211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 03/02/2021] [Indexed: 12/31/2022] Open
Abstract
Sulfotransferase Family 1A Member 2 (SULT1A2) is a protein coding gene. Several studies have reported that SULT1A2 may have a chemical carcinogenic effect if expressed as a functional protein. The present study aimed to investigate the expression and potential role of SULT1A2 in bladder cancer (BC). Data from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus databases were used to analyze SULT1A2 expression in BC. In addition, reverse transcription-quantitative PCR and western blot analyses were performed to detect SULT1A2 expression in BC cells and tissues. Immunohistochemistry analysis was performed on 100 formalin-fixed, paraffin-embedded BC tissues and corresponding adjacent normal bladder tissues (ANBTs) to verify SULT1A2 expression and determine the clinical significance of SULT1A2 in BC. Gene set enrichment analysis (GSEA) was performed to determine the potential biological processes and internal molecular mechanisms. The results demonstrated that SULT1A2 was highly expressed in BC tissues compared with ANBTs. Furthermore, high SULT1A2 expression was significantly associated with the staging of BC. Analyses of TCGA datasets and BC tissue microarray indicated that high SULT1A2 expression was significantly associated with a favorable overall survival in patients with BC. In addition, GSEA revealed pathways, diseases and biological processes associated with SULT1A2. Taken together, the results of the present study suggest that SULT1A2 acts as an oncogene in BC, and thus may serve as a biomarker for tumor staging and prognosis in patients with BC.
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Affiliation(s)
- Yinghui Chao
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Qifeng Ou
- Laboratory of Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Jin Shang
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
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BRAF Controls the Effects of Metformin on Neuroblast Cell Divisions in C. elegans. Int J Mol Sci 2020; 22:ijms22010178. [PMID: 33375360 PMCID: PMC7795703 DOI: 10.3390/ijms22010178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 12/14/2022] Open
Abstract
Metformin has demonstrated substantial potential for use in cancer treatments. Liver kinase B (LKB)-AMP-activated protein kinase (AMPK) and mTOR are reported to be the main targets of metformin in relation to its ability to prevent cancer cell proliferation. However, the role of metformin in the control of neoplastic cancer cell growth is possibly independent of LKB-AMPK and mTOR. Using C. elegans as a model, we found that the neuronal Q-cell divisions in L1-arrested worms were suppressed following metformin treatment in AMPK-deficient mutants, suggesting that the mechanism by which metformin suppresses these cell divisions is independent of AMPK. Our results showed that the mTOR pathway indeed played a role in controlling germ cell proliferation, but it was not involved in the neuronal Q-cell divisions occurring in L1-arrested worms. We found that the neuronal Q-cells divisions were held at G1/S cell stage by metformin in vivo. Additionally, we demonstrated that metformin could reduce the phosphorylation activity of BRAF and block the BRAF-MAPK oncogenesis pathway to regulate neuronal Q-cell divisions during L1 arrest. This work discloses a new mechanism by which metformin treatment acts to promote neuronal cancer prevention, and these results will help promote the study of the anticancer mechanisms underlying metformin treatments.
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Zhu J, Wang H, Ma T, He Y, Shen M, Song W, Wang JJ, Shi JP, Wu MY, Liu C, Wang WJ, Huang YQ. Identification of immune-related genes as prognostic factors in bladder cancer. Sci Rep 2020; 10:19695. [PMID: 33184436 PMCID: PMC7661532 DOI: 10.1038/s41598-020-76688-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 06/17/2020] [Indexed: 12/25/2022] Open
Abstract
Bladder cancer is one of the most common cancers worldwide. The immune response and immune cell infiltration play crucial roles in tumour progression. Immunotherapy has delivered breakthrough achievements in the past decade in bladder cancer. Differentially expressed genes and immune-related genes (DEIRGs) were identified by using the edgeR package. Gene ontology annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were performed for functional enrichment analysis of DEIRGs. Survival-associated IRGs were identified by univariate Cox regression analysis. A prognostic model was established by univariate COX regression analysis, and verified by a validation prognostic model based on the GEO database. Patients were divided into high-risk and low-risk groups based on the median risk score value for immune cell infiltration and clinicopathological analyses. A regulatory network of survival-associated IRGs and potential transcription factors was constructed to investigate the potential regulatory mechanisms of survival-associated IRGs. Nomogram and ROC curve to verify the accuracy of the model. Quantitative real-time PCR was performed to validate the expression of relevant key genes in the prognostic model. A total of 259 differentially expressed IRGs were identified in the present study. KEGG pathway analysis of IRGs showed that the “cytokine-cytokine receptor interaction” pathway was the most significantly enriched pathway. Thirteen survival-associated IRGs were selected to establish a prognostic index for bladder cancer. In both TCGA prognostic model and GEO validation model, patients with high riskscore had worse prognosis compared to low riskscore group. A high infiltration level of macrophages was observed in high-risk patients. OGN, ELN, ANXA6, ILK and TGFB3 were identified as hub survival-associated IRGs in the network. EBF1, WWTR1, GATA6, MYH11, and MEF2C were involved in the transcriptional regulation of these survival-associated hub IRGs. The present study identified several survival-associated IRGs of clinical significance and established a prognostic index for bladder cancer outcome evaluation for the first time.
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Affiliation(s)
- Jie Zhu
- Department of Oncology, Changzhou Traditional Chinese Medical Hospital, Changzhou, 213003, Jiangsu, People's Republic of China
| | - Han Wang
- Department of Oncology, Jining Tumour Hospital, Jining, People's Republic of China
| | - Ting Ma
- Department of Oncology, Changzhou Traditional Chinese Medical Hospital, Changzhou, 213003, Jiangsu, People's Republic of China
| | - Yan He
- Department of Radio-Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, Jiangsu, People's Republic of China
| | - Meng Shen
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China
| | - Wei Song
- Department of Gastrointestinal Surgery II, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
| | - Jing-Jing Wang
- Department of Oncology, Taizhou Hospital of Traditional Chinese Medicine, Taizhou, People's Republic of China
| | - Jian-Ping Shi
- Department of Radio-Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, Jiangsu, People's Republic of China
| | - Meng-Yao Wu
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China
| | - Chao Liu
- Department of Urology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, Jiangsu, People's Republic of China
| | - Wen-Jie Wang
- Department of Radio-Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, Jiangsu, People's Republic of China.
| | - Yue-Qing Huang
- Department of General Practice, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, People's Republic of China
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Zhang T, Zhao L, Zhang T, Wu W, Liu J, Wang X, Wan Y, Geng H, Sun X, Qian W, Yu D. Curcumin Negatively Regulates Cigarette Smoke-Induced Renal Cell Carcinoma Epithelial-Mesenchymal Transition Through the ERK5/AP-1 Pathway. Onco Targets Ther 2020; 13:9689-9700. [PMID: 33061449 PMCID: PMC7532894 DOI: 10.2147/ott.s265847] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 08/20/2020] [Indexed: 12/11/2022] Open
Abstract
Background So far, little research has been conducted regarding the underlying mechanism of renal carcinogenesis at molecular level. Epithelial–mesenchymal transition (EMT) exerts an important part during tumor genesis as well as the development through mitogen-activated protein kinase (MAPK) pathways. Therefore, we hypothesized that EMT could promote renal cell carcinoma (RCC) progression via the ERK5/AP-1pathway. Materials and Methods The RCC cell lines were utilized to be the models with in vitro exposure to cigarette smoke extract (CSE). We used the curcumin for the EMT intervention study. In the present study, immunohistochemistry (IHC), Western blotting, and real-time quantitative reverse transcription PCR had been used to determine the experimental results. EMT phenotypic alterations were assessed by changes in cell morphology, invasion and transfer ability, as well as expression of epithelial and mesenchymal markers. Results In human renal cell carcinoma tissue, E-cadherin expression within the smoking renal cancer patients was down-regulated compared with that among the non-smokers. However, Vimentin, N-cadherin, and TWIST levels increased (P<0.05). Significantly, we clarified that ERK5/AP-1 exerted positive regulation on the renal cell carcinoma EMT mediated by CS, which was suggested based on the results of CS activating the ERK5/AP-1 pathway, as well as ERK5 inhibition via XMD8-92 reversed AP-1 protein levels and the EMT process. Furthermore, curcumin showed the same inhibitory effect as XMD8-92 and significantly reversed CS-induced EMT through inhibiting the ERK5/AP-1 signaling pathway. Conclusion The above results indicated that ERK5/AP-1 signaling pathway exerts a vital part for CS-associated RCC development and cancer intervention.
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Affiliation(s)
- Tao Zhang
- Department of Urologic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Li Zhao
- Department of Urologic Surgery, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, 210048, People's Republic of China
| | - Taotao Zhang
- Department of Urologic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Wangyu Wu
- Department of Urologic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Jie Liu
- Department of Urologic Surgery, The First People's Hospital of Wuhu, Wuhu 241000, People's Republic of China
| | - Xian Wang
- Department of Urologic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Yang Wan
- Department of Hematology/Hematological Lab, The Second Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Hao Geng
- Department of Urologic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Xin Sun
- Department of Urologic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Weiwei Qian
- Department of Urologic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Dexin Yu
- Department of Urologic Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
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Abstract
Identification of novel therapeutic targets has improved diagnostics and treatment of many diseases. Many innovative treatment strategies have been developed based on the newly identified biomarkers and key molecules. Most of the research focused on ways to manipulate signaling pathways by activating or suppressing them, validate new therapeutic targets for treatment, and epigenetic treatment of diseases. With the identification of aberrations in multiple growth pathways, the focus then shifted to the small molecules involved in these pathways for targeted therapy. In this communication/short review, we highlight the importance of identification of abnormal activation of the mitogen-activated protein kinase (MAPK), ERK1/2, and its upstream mediator MEK1/2, in erythrocytes in patients with sickle cell disease (SCD) critical for the adhesive interactions of these cells with the endothelium, and leukocytes promoting circulatory obstruction leading to tissue ischemia and infraction. We also discuss how targeting this signaling cascade with MEK1/2 inhibitors can reverse acute vasoocclusive crises in SCD.
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Affiliation(s)
- Rahima Zennadi
- Division of Hematology and Duke Comprehensive Sickle Cell Center, Department of Medicine, Duke University Medical Center, North Carolina, USA
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Yukimatsu N, Gi M, Okuno T, Fujioka M, Suzuki S, Kakehashi A, Yanagiba Y, Suda M, Koda S, Nakatani T, Wanibuchi H. Promotion effects of acetoaceto-o-toluidide on N-butyl-N-(4-hydroxybutyl)nitrosamine-induced bladder carcinogenesis in rats. Arch Toxicol 2019; 93:3617-3631. [DOI: 10.1007/s00204-019-02605-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 10/23/2019] [Indexed: 01/19/2023]
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