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Ayla S, Karakoc E, Byrne YY, Parlayan C, Keskin I, Karahuseyinoglu S, Taskiran A, Oktem G. Splicing variants of versican in CD133 +/CD44 + prostate cancer stem cells. Pathol Res Pract 2024; 260:155440. [PMID: 38964119 DOI: 10.1016/j.prp.2024.155440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 06/05/2024] [Accepted: 06/28/2024] [Indexed: 07/06/2024]
Abstract
A cancer mass is composed of a heterogeneous group of cells, a small part of which constitutes the cancer stem cells since they are less differentiated and have a high capacity to develop cancer. Versican is an extracellular matrix protein located in many human tissues. The mRNA of versican has been shown to have "splicing patterns" as detected by RT-PCR, northern blot analysis, and cDNA sequencing. Based on this knowledge this study aims to reveal the splice variants of versican molecules, which are thought to be involved in the pathogenesis of the DU-145 human prostatic carcinoma cell line and prostatic cancer stem cells isolated from this cell line. In this study, RWPE-1 normal prostatic and DU-145 human prostate cancer cell lines have been used. Prostatic cancer stem cells and the remaining group of non-prostatic-cancer stem cells (bulk population) were isolated according to their CD133+/CD44+. RNA was isolated in all groups, and sequence analysis was accomplished for splicing variants by Illumina NextSeq 500 sequencing system. The results were analyzed by bioinformatic evaluation. As five isoforms of the versican gene in the differential transcript expression are analyzed, it was observed that a significant change was only found in the isoforms Versican 0 and Versican 1. In this study, we explored the function of this molecule which we think to be effective in cancer progression, and suggested that more valuable results can be obtained after the accomplishment of in vivo experiments.
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Affiliation(s)
- Sule Ayla
- Istanbul Medeniyet University, School of Medicine, Department of Histology and Embryology, Istanbul 34700, Turkey.
| | - Emre Karakoc
- Wellcome Sanger Institute, Cambridge, England, United Kingdom
| | - Yasemin Yozgat Byrne
- Research Institute for Health Sciences and Technologies (SABITA), Cancer Research Center, Istanbul Medipol University, Beykoz, Istanbul 34810, Turkey
| | - Cuneyd Parlayan
- Bahçeşehir University School of Medicine, Department of Biostatistics and Medical Informatics, Sahrayıcedit, Istanbul 34353, Turkey
| | - Ilknur Keskin
- Research Institute for Health Sciences and Technologies (SABITA), Cancer Research Center, Istanbul Medipol University, Beykoz, Istanbul 34810, Turkey; Istanbul Medipol University, School of Medicine, Department of Histology and Embryology, Istanbul 34810, Turkey
| | - Sercin Karahuseyinoglu
- Koc University, School of Medicine, Department of Histology and Embryology, Sariyer, Istanbul 34450, Turkey
| | - Aysegul Taskiran
- Ege University, School of Medicine, Department of Histology and Embryology, Bornova, Izmir 35100, Turkey
| | - Gulperi Oktem
- Ege University, School of Medicine, Department of Histology and Embryology, Bornova, Izmir 35100, Turkey
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Chien MH, Yang YC, Ho KH, Ding YF, Chen LH, Chiu WK, Chen JQ, Tung MC, Hsiao M, Lee WJ. Cyclic increase in the ADAMTS1-L1CAM-EGFR axis promotes the EMT and cervical lymph node metastasis of oral squamous cell carcinoma. Cell Death Dis 2024; 15:82. [PMID: 38263290 PMCID: PMC10805752 DOI: 10.1038/s41419-024-06452-9] [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: 07/12/2023] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/25/2024]
Abstract
The matrix metalloprotease A disintegrin and metalloprotease with thrombospondin motifs 1 (ADAMTS1) was reported to be involved in tumor progression in several cancer types, but its contributions appear discrepant. At present, the role of ADAMTS1 in oral squamous cell carcinoma (SCC; OSCC) remains unclear. Herein, The Cancer Genome Atlas (TCGA) database showed that ADAMTS1 transcripts were downregulated in head and neck SCC (HNSCC) tissues compared to normal tissues, but ADAMTS1 levels were correlated with poorer prognoses of HNSCC patients. In vitro, we observed that ADAMTS1 expression levels were correlated with the invasive abilities of four OSCC cell lines, HSC-3, SCC9, HSC-3M, and SAS. Knockdown of ADAMTS1 in OSCC cells led to a decrease and its overexpression led to an increase in cell-invasive abilities in vitro as well as tumor growth and lymph node (LN) metastasis in OSCC xenografts. Mechanistic investigations showed that the cyclic increase in ADAMTS1-L1 cell adhesion molecule (L1CAM) axis-mediated epidermal growth factor receptor (EGFR) activation led to exacerbation of the invasive abilities of OSCC cells via inducing epithelial-mesenchymal transition (EMT) progression. Clinical analyses revealed that ADAMTS1, L1CAM, and EGFR levels were all correlated with worse prognoses of HNSCC patients, and patients with ADAMTS1high/L1CAMhigh or EGFRhigh tumors had the shortest overall and disease-specific survival times. As to therapeutic aspects, we discovered that an edible plant-derived flavonoid, apigenin (API), drastically inhibited expression of the ADAMTS1-L1CAM-EGFR axis and reduced the ADAMTS1-triggered invasion and LN metastasis of OSCC cells in vitro and in vivo. Most importantly, API treatment significantly prolonged survival rates of xenograft mice with OSCC. In summary, ADAMTS1 may be a useful biomarker for predicting OSCC progression, and API potentially retarded OSCC progression by targeting the ADAMTS1-L1CAM-EGFR signaling pathway.
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Affiliation(s)
- Ming-Hsien Chien
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, Taiwan
- Pulmonary Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Traditional Herbal Medicine Research Center, Taipei Medical University Hospital Taipei, Taipei, Taiwan
| | - Yi-Chieh Yang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Medical Research, Tungs' Taichung MetroHarbor Hospital, Taichung, Taiwan
| | - Kuo-Hao Ho
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yi-Fang Ding
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Otolaryngology, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Li-Hsin Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Wen-Kuan Chiu
- Division of Plastic Surgery, Department of Surgery, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Department of Surgery, School of Medicine, College of Surgery, Taipei Medical University, Taipei, Taiwan
| | - Ji-Qing Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Cancer Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Min-Che Tung
- Department of Surgery, Tungs' Taichung Metro Harbor Hospital, Taichung, Taiwan
| | - Michael Hsiao
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Wei-Jiunn Lee
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
- Department of Urology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
- Department of Medical Education and Research, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.
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Shibahara K, Nishida H, Kusaba T, Etoh T, Amano S, Daa T. Immunohistochemical staining of versican as a potential marker for predicting lymph node metastasis in gastric cancer. Pathol Res Pract 2024; 253:155055. [PMID: 38176310 DOI: 10.1016/j.prp.2023.155055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 12/19/2023] [Indexed: 01/06/2024]
Abstract
Gastric cancer is one of the most common cancers and has a high mortality rate. Lymph node metastasis is a key determinant of prognosis, and an essential mechanism involved in metastasis is the epithelial-mesenchymal transition. In this study, we aimed to assess the diagnostic role of versican (VCAN), a molecule participating in the epithelial-mesenchymal transition, on the detection of metastatic cancer. The expression of VCAN was evaluated using immunohistochemistry, and its biological activity was examined using gastric cancer cell lines. In patients with lymph node metastasis, VCAN expression was more prominent at primary tumor sites. In addition, VCAN was found to promote cell migration in vitro, thus potentially facilitating the distribution of metastases. Overall, increased expression of VCAN at the primary site may signify the development of metastases in lymph nodes because this protein is recognized as contributing to the migration of cancer cells into lymph nodes.
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Affiliation(s)
- Kazuki Shibahara
- Department of Diagnostic Pathology, Oita University, Oita, Japan; Department of Medical Life Sciences, School of Medical Life Sciences, Kyushu University of Health and Welfare, Miyazaki, Japan; Cancer Cell Institute, Kyushu University of Health and Welfare, Miyazaki, Japan.
| | - Haruto Nishida
- Department of Diagnostic Pathology, Oita University, Oita, Japan
| | - Takahiro Kusaba
- Department of Diagnostic Pathology, Oita University, Oita, Japan
| | - Tsuyoshi Etoh
- Department of Gastroenterological and Pediatric Surgery Faculty of Medicine Oita University, Oita, Japan
| | - Syota Amano
- Department of Gastroenterological and Pediatric Surgery Faculty of Medicine Oita University, Oita, Japan
| | - Tsutomu Daa
- Department of Diagnostic Pathology, Oita University, Oita, Japan
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Xiong J, Lai Y, Cheng N, Liu J, Wang F, Zheng X, Wang Y, Zhuang Q, Lin Y, Liu J, Yang Y, Zhao B, Yang X. Lnc-PLA2G4A-4 facilitates the progression of hepatocellular carcinoma by inducing versican expression via sponging miR-23b-3p. Heliyon 2023; 9:e18698. [PMID: 37554815 PMCID: PMC10405012 DOI: 10.1016/j.heliyon.2023.e18698] [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: 04/25/2023] [Revised: 07/20/2023] [Accepted: 07/25/2023] [Indexed: 08/10/2023] Open
Abstract
Aberrant expression of long non-coding RNAs (lncRNAs) is associated with progression of multiple human cancers including hepatocellular carcinoma (HCC). However, the role of lncRNAs in HCC is not been fully understood. Our study aimed to investigate the biological function and potential molecular mechanism of Lnc-PAL2G4A-4 in HCC. In the current study, we show that Lnc-PLA2G4A-4 was significantly up-regulated in HCC tissues and high Lnc-PLA2G4A-4 expression was remarkably associated with tumor size, microvascular invasion and poor prognosis of HCC patients. Functionally, Lnc-PLA2G4A-4 positively regulated cell proliferation, invasion and migration in vitro, and facilitated lung metastasis of HCC in vivo. Mechanistically, Lnc-PLA2G4A-4 functioned as a competing endogenous RNA (ceRNA) to bind to miR-23b-3p and subsequently facilitate miR-23b-3p's target gene versican (VCAN) expression in HCC cells. Over-expression of miR-23b-3p could reverse Lnc-PLA2G4A-4 induced cell phenotypes in HCC and suppress versican expression of by rescue analysis. Collectively, Lnc-PLA2G4A-4 promotes HCC progression by targeting the miR-23b-3p/versican axis, which may be a potential biomarker and therapeutic target for HCC.
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Affiliation(s)
- Jiahui Xiong
- Fuzhou Hospital of Traditional Chinese Medicine Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou 350001, PR China
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, PR China
| | - Yongping Lai
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Fujian Provincial Clinical Research Center for Hepatobiliary and Pancreatic Tumors, Fuzhou 350025, PR China
| | - Niangmei Cheng
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Fujian Provincial Clinical Research Center for Hepatobiliary and Pancreatic Tumors, Fuzhou 350025, PR China
| | - Jizhe Liu
- College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, PR China
| | - Fei Wang
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Fujian Provincial Clinical Research Center for Hepatobiliary and Pancreatic Tumors, Fuzhou 350025, PR China
| | - Xiaoyuan Zheng
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Fujian Provincial Clinical Research Center for Hepatobiliary and Pancreatic Tumors, Fuzhou 350025, PR China
| | - Yingchao Wang
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Fujian Provincial Clinical Research Center for Hepatobiliary and Pancreatic Tumors, Fuzhou 350025, PR China
| | - Qiuyu Zhuang
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Fujian Provincial Clinical Research Center for Hepatobiliary and Pancreatic Tumors, Fuzhou 350025, PR China
| | - Yantin Lin
- Fuzhou Hospital of Traditional Chinese Medicine Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou 350001, PR China
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, PR China
| | - Jingfeng Liu
- Department of Hepatopancreatobiliary Surgery, Fujian Medical University Cancer Hospital, Fujian Cancer Hospital, Fuzhou, Fujian, PR China
| | - Yixuan Yang
- Fuzhou Gezhi High School of Fujian, Fuzhou, PR China
| | - Bixing Zhao
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Fujian Provincial Clinical Research Center for Hepatobiliary and Pancreatic Tumors, Fuzhou 350025, PR China
| | - Xiaoyu Yang
- Fuzhou Hospital of Traditional Chinese Medicine Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou 350001, PR China
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, PR China
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Jena SK, Das S, Chakraborty S, Ain R. Molecular determinants of epithelial mesenchymal transition in mouse placenta and trophoblast stem cell. Sci Rep 2023; 13:10978. [PMID: 37414855 PMCID: PMC10325982 DOI: 10.1038/s41598-023-37977-2] [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: 03/22/2023] [Accepted: 06/30/2023] [Indexed: 07/08/2023] Open
Abstract
Trophectoderm cells of the blastocyst are the precursor of the placenta that is comprised of trophoblast, endothelial and smooth muscle cells. Since trophoectoderm cells are epithelial in nature, epithelial mesenchymal transition (EMT) of trophoblast stem (TS) cells might play pivotal role in placental morphogenesis. However, the molecular regulation of EMT during placental development and trophoblast differentiation still remained elusive. In this report, we sought to identify the molecular signature that regulates EMT during placental development and TS cell differentiation in mice. On E7.5 onwards the TS cells, located in the ectoplacental cone (EPC), rapidly divide and differentiate leading to formation of placenta proper. Using a real time PCR based array of functional EMT transcriptome with RNA from mouse implantation sites (IS) on E7.5 and E9.5, it was observed that there was an overall reduction of EMT gene expression in the IS as gestation progressed from E7.5 to E9.5 albeit the levels of EMT gene expression were substantial on both days. Further validation of array results using real time PCR and western blot analysis showed significant decrease in EMT-associated genes that included (a) transcription factors (Snai2, Zeb1, Stat3 and Foxc2), (b) extracellular matrix and cell adhesion related genes (Bmp1, Itga5, Vcan and Col3A1), (c) migration and motility- associated genes (Vim, Msn and FN1) and (d) differentiation and development related genes (Wnt5b, Jag1 and Cleaved Notch-1) on E9.5. To understand whether EMT is an ongoing process during placentation, the EMT-associated signatures genes, prevalent on E 7.5 and 9.5, were analysed on E12.5, E14.5 and E17.5 of mouse placenta. Interestingly, expression of these EMT-signature proteins were significantly higher at E12.5 though substantial expressions was observed in placenta with progression of gestation from mid- to late. To evaluate whether TS cells have the potential to undergo EMT ex vivo, TS cells were subjected to EMT induction, which was confirmed using morphological analysis and marker gene expression. Induction of EMT in TS cells showed similar gene expression profile of placental EMT. These results have broad biological implications, as inadequate mesenchymal transition leading to improper trophoblast-vasculogenic mimicry leads to placental pathophysiology and pregnancy failure.
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Affiliation(s)
- Shipra Kanti Jena
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Calcutta, West Bengal, 700032, India
- Academy of Scientific and Innovative Research (AcSIR), Sector 19, Kamla Nehru Nagar, Ghaziabad, UP, 201002, India
| | - Shreya Das
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Calcutta, West Bengal, 700032, India
| | - Shreeta Chakraborty
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Calcutta, West Bengal, 700032, India
| | - Rupasri Ain
- Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Calcutta, West Bengal, 700032, India.
- Academy of Scientific and Innovative Research (AcSIR), Sector 19, Kamla Nehru Nagar, Ghaziabad, UP, 201002, India.
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Shen K, Ke S, Chen B, Zhang T, Wang H, Lv J, Gao W. Identification and validation of biomarkers for epithelial-mesenchymal transition-related cells to estimate the prognosis and immune microenvironment in primary gastric cancer by the integrated analysis of single-cell and bulk RNA sequencing data. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2023; 20:13798-13823. [PMID: 37679111 DOI: 10.3934/mbe.2023614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
BACKGROUND The epithelial-mesenchymal transition (EMT) is associated with gastric cancer (GC) progression and immune microenvironment. To better understand the heterogeneity underlying EMT, we integrated single-cell RNA-sequencing (scRNA-seq) data and bulk sequencing data from GC patients to evaluate the prognostic utility of biomarkers for EMT-related cells (ERCs), namely, cancer-associated fibroblasts (CAFs) and epithelial cells (ECs). METHODS scRNA-seq data from primary GC tumor samples were obtained from the Gene Expression Omnibus (GEO) database to identify ERC marker genes. Bulk GC datasets from the Cancer Genome Atlas (TCGA) and GEO were used as training and validation sets, respectively. Differentially expressed markers were identified from the TCGA database. Univariate Cox, least-absolute shrinkage, and selection operator regression analyses were performed to identify EMT-related cell-prognostic genes (ERCPGs). Kaplan-Meier, Cox regression, and receiver-operating characteristic (ROC) curve analyses were adopted to evaluate the prognostic utility of the ERCPG signature. An ERCPG-based nomogram was constructed by integrating independent prognostic factors. Finally, we evaluated the correlations between the ERCPG signature and immune-cell infiltration and verified the expression of ERCPG prognostic signature genes by in vitro cellular assays. RESULTS The ERCPG signature was comprised of seven genes (COL4A1, F2R, MMP11, CAV1, VCAN, FKBP10, and APOD). Patients were divided into high- and low-risk groups based on the ERCPG risk scores. Patients in the high-risk group showed a poor prognosis. ROC and calibration curves suggested that the ERCPG signature and nomogram had a good prognostic utility. An immune cell-infiltration analysis suggested that the abnormal expression of ERCPGs induced the formation of an unfavorable tumor immune microenvironment. In vitro cellular assays showed that ERCPGs were more abundantly expressed in GC cell lines compared to normal gastric tissue cell lines. CONCLUSIONS We constructed and validated an ERCPG signature using scRNA-seq and bulk sequencing data from ERCs of GC patients. Our findings support the estimation of patient prognosis and tumor treatment in future clinical practice.
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Affiliation(s)
- Kaiyu Shen
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Shuaiyi Ke
- Department of Internal Medicine, XianJu People's Hospital, XianJu 317399, China
| | - Binyu Chen
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Tiantian Zhang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Hongtai Wang
- Department of General Surgery, XianJu People' Hospital, XianJu 317399, China
| | - Jianhui Lv
- Department of General Surgery, XianJu People' Hospital, XianJu 317399, China
| | - Wencang Gao
- Department of Oncology, Zhejiang Chinese Medical University, Hangzhou 310005, China
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Targeted Inhibition of O-Linked β-N-Acetylglucosamine Transferase as a Promising Therapeutic Strategy to Restore Chemosensitivity and Attenuate Aggressive Tumor Traits in Chemoresistant Urothelial Carcinoma of the Bladder. Biomedicines 2022; 10:biomedicines10051162. [PMID: 35625898 PMCID: PMC9138654 DOI: 10.3390/biomedicines10051162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 05/13/2022] [Accepted: 05/17/2022] [Indexed: 01/27/2023] Open
Abstract
Acquisition of acquired chemoresistance during treatment cycles in urothelial carcinoma of the bladder (UCB) is the major cause of death through enhancing the risk of cancer progression and metastasis. Elevated glucose flux through the abnormal upregulation of O-linked β-N-acetylglucosamine (O-GlcNAc) transferase (OGT) controls key signaling and metabolic pathways regulating diverse cancer cell phenotypes. This study showed that OGT expression levels in two human UCB cell models with acquired resistance to gemcitabine and paclitaxel were significantly upregulated compared with those in parental cells. Reducing hyper-O-GlcNAcylation by OGT knockdown (KD) markedly facilitated chemosensitivity to the corresponding chemotherapeutics in both cells, and combination treatment with OGT-KD showed more severe growth defects in chemoresistant sublines. We subsequently verified the suppressive effects of OGT-KD monotherapy on cell migration/invasion in vitro and xenograft tumor growth in vivo in chemoresistant UCB cells. Transcriptome analysis of these cells revealed 97 upregulated genes, which were enriched in multiple oncogenic pathways. Our final choice of suspected OGT glycosylation substrate was VCAN, S1PR3, PDGFRB, and PRKCG, the knockdown of which induced cell growth defects. These findings demonstrate the vital role of dysregulated OGT activity and hyper-O-GlcNAcylation in modulating treatment failure and tumor aggression in chemoresistant UCB.
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