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Abstract
Lung squamous carcinoma (LUSC) is the second most frequent subtype of non-small cell lung cancer. Rarely gene alterations are identified in LUSC. Therefore, identifying LUSC-related genes to explain the relevant molecular mechanism is urgently needed. A potential biomarker, calcium-activated nucleotidase 1 (CANT1), was elevated in tissues of LUSC patients relative to normal cases based on the TCGA and/or GTEx database. CCK-8 and transwell tests were then implemented to measure the proliferative, invasive and migratory capacities, and showed that knockdown of CANT1 blocked LUSC cells proliferation. miR-607, predicted as an upstream factor for CANT1, was declined in LUSC using TargetScan analysis and luciferase activity test. Low miR-607 expression was related with unfavorable outcomes of LUSC patients. Moreover, miR-607 downregulation elevated cell viability, invasion and migration in LUSC cells, which was antagonized by si-CANT1. GEPIA website was accessed to estimate the relevance between CANT1 and epithelial-mesenchymal transition (EMT)-related positive factors. The protein levels of Fibronectin, Vimentin, Snail and β-catenin were altered due to the abnormal CANT1 and miR-607 expression. Together, these data unveiled that miR-607/CANT1 pair may exert a vital role in the progression of LUSC through mediating EMT process, which would furnish an available therapeutic therapy for LUSC.
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Affiliation(s)
- Gang Qiao
- Department of Integrative Medicine Oncology, Zibo Bashan Wanjie Hospital, Zibo
| | - Hai-Bo Wang
- Emergency department, Rizhao Central Hospital, Rizhao
| | - Xiu-Na Duan
- Department of Nuclear Medicine, Central Hospital of Shan County, Shan County, Heze, Shandong People's Republic of China
| | - Xiao-Fang Yan
- Department of Nuclear Medicine, Central Hospital of Shan County, Shan County, Heze, Shandong People's Republic of China
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Lu L, Zhang Q, Ren M, Jin E, Hu Q, Zhao C, Li S. Effects of Boron on Cytotoxicity, Apoptosis, and Cell Cycle of Cultured Rat Sertoli Cells In vitro. Biol Trace Elem Res 2020; 196:223-230. [PMID: 31656015 DOI: 10.1007/s12011-019-01911-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Accepted: 09/20/2019] [Indexed: 12/31/2022]
Abstract
The present study aimed to investigate the effects of the administration of boron on viability, apoptosis, and cell cycle of primary rat Sertoli cells (SCs) in vitro. SCs were aseptically isolated from 18-22-day-old male Sprague-Dawley (SD) rats. SCs were identified with immunofluorescence using anti-vimentin antibody. Further, to investigate the effects of boron on Sertoli cells, SCs of the boron treatment group were exposed to different concentrations (0.25, 0.5, 1, 5, 10, 40, and 80 mmol/L) of boric acid. Using MTT and Cell Counting Kit-8 assays, the impact of boron on SCs viability was analyzed. Cell apoptosis and cycle of SCs were analyzed using flow cytometry. A concentration of 0.5 mmol/L boric acid resulted in the highest viability and lowest necrosis and apoptosis. Above this concentration (even 1.0 mmol/L) showed lower viability and higher levels of necrosis and apoptosis. Administration of < 0.5 mmol/L boron significantly promoted the viability of Sertoli cells (P < 0.01); however, the exposure to high dose (> 10 mmol/L) of boron exhibited significant adverse effects on Sertoli cells (P < 0.01) and even toxic effects, inhibiting cell viability compared to the control group. Flow cytometry analysis showed that treatment with 0.5 mmol/L of boron significantly inhibited the apoptosis of Sertoli cells and the proportion of cells in S and G2/M phases was markedly increased; however, a higher concentration of 40 and 80 mmol/L of boron promoted Sertoli cell apoptosis and cells were completely arrested at G0/G1 phase. Boron at doses below 0.5 mmol/L could significantly improve the viable capacity of testicular Sertoli cells in vitro and inhibit their apoptosis. However, high dose of boron (at a concentration higher than 5.0 mmol/L) exhibited noticeable toxic effects, inhibiting cell viability, accelerating apoptosis of Sertoli cells, and arresting cell cycle at G0/G1 phase.
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Affiliation(s)
- Liangyue Lu
- College of Animal Science, Anhui Science and Technology University, No.9 Donghua Road, Fengyang County, 233100, Anhui Province, People's Republic of China
| | - Qian Zhang
- College of Animal Science, Anhui Science and Technology University, No.9 Donghua Road, Fengyang County, 233100, Anhui Province, People's Republic of China
| | - Man Ren
- College of Animal Science, Anhui Science and Technology University, No.9 Donghua Road, Fengyang County, 233100, Anhui Province, People's Republic of China
- Key Laboratory of Quality & Safety Control for Pork, Ministry of Agriculture and Rural, Fengyang County, Anhui Province, People's Republic of China
| | - Erhui Jin
- College of Animal Science, Anhui Science and Technology University, No.9 Donghua Road, Fengyang County, 233100, Anhui Province, People's Republic of China
- Key Laboratory of Quality & Safety Control for Pork, Ministry of Agriculture and Rural, Fengyang County, Anhui Province, People's Republic of China
| | - Qianqian Hu
- College of Animal Science, Anhui Science and Technology University, No.9 Donghua Road, Fengyang County, 233100, Anhui Province, People's Republic of China
- Key Laboratory of Quality & Safety Control for Pork, Ministry of Agriculture and Rural, Fengyang County, Anhui Province, People's Republic of China
| | - Chunfang Zhao
- College of Animal Science, Anhui Science and Technology University, No.9 Donghua Road, Fengyang County, 233100, Anhui Province, People's Republic of China
- Key Laboratory of Quality & Safety Control for Pork, Ministry of Agriculture and Rural, Fengyang County, Anhui Province, People's Republic of China
| | - Shenghe Li
- College of Animal Science, Anhui Science and Technology University, No.9 Donghua Road, Fengyang County, 233100, Anhui Province, People's Republic of China.
- Key Laboratory of Quality & Safety Control for Pork, Ministry of Agriculture and Rural, Fengyang County, Anhui Province, People's Republic of China.
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Strauss RP, Audsley KM, Passman AM, van Vuuren JH, Finch-Edmondson ML, Callus BA, Yeoh GC. Loss of ARF/INK4A Promotes Liver Progenitor Cell Transformation Toward Tumorigenicity Supporting Their Role in Hepatocarcinogenesis. Gene Expr 2020; 20:39-52. [PMID: 32317048 PMCID: PMC7284103 DOI: 10.3727/105221620x15874935364268] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Liver progenitor cells (LPCs) contribute to liver regeneration during chronic damage and are implicated as cells of origin for liver cancers including hepatocellular carcinoma (HCC). The CDKN2A locus, which encodes the tumor suppressors alternate reading frame protein (ARF) and INK4A, was identified as one of the most frequently altered genes in HCC. This study demonstrates that inactivation of CDKN2A enhances tumorigenic transformation of LPCs. The level of ARF and INK4A expression was determined in a panel of transformed and nontransformed wild-type LPC lines. Moreover, the transforming potential of LPCs with inactivated CDKN2A was shown to be enhanced in LPCs derived from Arf-/- and CDKN2Afl/fl mice and in wild-type LPCs following CRISPR-Cas9 suppression of CDKN2A. ARF and INK4A abundance is consistently reduced or ablated following LPC transformation. Arf-/- and CDKN2A-/- LPCs displayed hallmarks of transformation such as anchorage-independent and more rapid growth than control LPC lines with unaltered CDKN2A. Transformation was not immediate, suggesting that the loss of CDKN2A alone is insufficient. Further analysis revealed decreased p21 expression as well as reduced epithelial markers and increased mesenchymal markers, indicative of epithelial-to-mesenchymal transition, following inactivation of the CDKN2A gene were required for tumorigenic transformation. Loss of ARF and INK4A enhances the propensity of LPCs to undergo a tumorigenic transformation. As LPCs represent a cancer stem cell candidate, identifying CDKN2A as a driver of LPC transformation highlights ARF and INK4A as viable prognostic markers and therapeutic targets for HCC.
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Affiliation(s)
- Robyn P. Strauss
- *School of Molecular Sciences, The University of Western Australia, Crawley, WA, Australia
- †Centre for Medical Research, Harry Perkins Institute of Medical Research, Nedlands, WA, Australia
| | - Katherine M. Audsley
- *School of Molecular Sciences, The University of Western Australia, Crawley, WA, Australia
| | - Adam M. Passman
- *School of Molecular Sciences, The University of Western Australia, Crawley, WA, Australia
- †Centre for Medical Research, Harry Perkins Institute of Medical Research, Nedlands, WA, Australia
| | - Joanne H. van Vuuren
- †Centre for Medical Research, Harry Perkins Institute of Medical Research, Nedlands, WA, Australia
| | | | - Bernard A. Callus
- *School of Molecular Sciences, The University of Western Australia, Crawley, WA, Australia
| | - George C. Yeoh
- *School of Molecular Sciences, The University of Western Australia, Crawley, WA, Australia
- †Centre for Medical Research, Harry Perkins Institute of Medical Research, Nedlands, WA, Australia
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Abstract
The aim of the study was to investigate the molecular mechanisms in childhood adrenocortical tumors (ACTs), which is still unclear.A total of 9 girls and 4 boys with ACTs were enrolled. Relevant clinical features were obtained from records. Immunohistochemistry of vimentin, chromogranin A, S100, synaptophysin, cytokeratin (CK), type 2 3β-hydroxysteroid dehydrogenase (3βHSD), cytochrome P45017α, p53, p21, p27, cyclin D1, Ki-67, insulin growth facter-2 (IGF-2), and β-catenin were undertaken for 13 tumors and 3 adjacent normal tissues. TP53 mutations in exon 2-11 were analyzed for 6 tumors and 3 blood samples.Virilization was the most common presentation (8/13, 61.5%). Immunohistochemically, p53 was positive in 8 of 13 ACTs and none in controls while p21 was positive in 12 of 13 ACTs and none in controls (P = .0036). Ki-67 was positive in 10 of 13 ACTs, but not in normal tissues (P = .0089). Although the expression of p27, cyclin D1, IGF-2 and β-catenin were similar between the ACTs and controls, β-catenin was noted in nuclear of 3 ACTs but not in controls. The difference of type 2 3βHSD and P450c17α was not significant (P > .05, respectively). Four variants of TP53 were identified in the 6 tumors. C215G variant was found in 5 of 6 while A701G and G743A variants were found in 1 case, respectively. A novel C680G variant was also noted in 1 case. It was notable that C215G variant was found in the blood mononuclear cell of 3 patients.In conclusion, p53 variant and p21 overexpression, and abnormal β-catenin distribution may be involved in the etiology and mechanism of childhood ACTs.
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Affiliation(s)
- Xiaohui Wu
- Children's Hospital of Zhejiang University School of Medicine
| | - Jun Xu
- Children's Hospital of Zhejiang University School of Medicine
- Hangzhou Children's Hospital, Hangzhou, China
| | - Jinhu Wang
- Children's Hospital of Zhejiang University School of Medicine
| | - Weizhong Gu
- Children's Hospital of Zhejiang University School of Medicine
| | - Chaochun Zou
- Children's Hospital of Zhejiang University School of Medicine
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Blom S, Erickson A, Östman A, Rannikko A, Mirtti T, Kallioniemi O, Pellinen T. Fibroblast as a critical stromal cell type determining prognosis in prostate cancer. Prostate 2019; 79:1505-1513. [PMID: 31269283 PMCID: PMC6813917 DOI: 10.1002/pros.23867] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 05/27/2019] [Accepted: 05/28/2019] [Indexed: 12/30/2022]
Abstract
BACKGROUND Tumor stroma associates with prostate cancer (PCa) progression, but its specific cellular composition and association to patient survival outcome have not been characterized. METHODS We analyzed stromal composition in human PCa using multiplex immunohistochemistry and quantitative, high-resolution image analysis in two retrospective, formalin-fixed paraffin embedded observational clinical cohorts (Cohort I, n = 117; Cohort II, n = 340) using PCa-specific mortality as outcome measurement. RESULTS A high proportion of fibroblasts associated with aggressive disease and castration-resistant prostate cancer (CRPC). In a multivariate analysis, increase in fibroblast proportion predicted poor cancer-specific outcome independently in the two clinical cohorts studied. CONCLUSIONS Fibroblasts were the most important cell type in determining prognosis in PCa and associated with CRPC. Thus, the stromal composition could be critically important in developing diagnostic and therapeutic approaches to aggressive prostate cancer.
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Affiliation(s)
- Sami Blom
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE)University of HelsinkiHelsinkiFinland
| | - Andrew Erickson
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE)University of HelsinkiHelsinkiFinland
| | - Arne Östman
- Science for Life Laboratory, Department of Oncology and PathologyKarolinska InstitutetStockholmSweden
| | - Antti Rannikko
- Department of UrologyHelsinki University and Helsinki University HospitalHelsinkiFinland
| | - Tuomas Mirtti
- Department of PathologyUniversity of HelsinkiHelsinkiFinland
| | - Olli Kallioniemi
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE)University of HelsinkiHelsinkiFinland
- Science for Life Laboratory, Department of Oncology and PathologyKarolinska InstitutetStockholmSweden
| | - Teijo Pellinen
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE)University of HelsinkiHelsinkiFinland
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Sun LJ, Dong J, Gao F, Chen DM, Li K, Liu J, Zhang C, Tohti M, Yang XP. Intracranial solitary fibrous tumor: Report of two cases. Medicine (Baltimore) 2019; 98:e15327. [PMID: 31027104 PMCID: PMC6831225 DOI: 10.1097/md.0000000000015327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 03/17/2019] [Accepted: 03/25/2019] [Indexed: 02/07/2023] Open
Abstract
RATIONALE Intracranial solitary fibrous tumor (ISFT) is a rare spindle cell tumor derived from dendritic mesenchymal cells expressing CD34 antigens, which are widely distributed in human connective tissues. PATIENT CONCERNS In two case reports, we describe a 61-year-old woman and a 42-year-old man who present with intracranial malignant SFTs. Computed tomography or magnetic resonance imaging of head revealed that the largest size is about 3.3 × 3.0 cm in left occipital part and 4.0 × 3.0 cm in right skull base. DIAGNOSIS Postoperative pathological results demonstrated that all of two cases are SFT. Case one: Immunohistochemical examination demonstrated a strong immunoreaction for cluster of differentiation (CD)34, B-cell lymphoma 2 (Bcl-2) and Vimentin (Vim). Case two: The tumor was distinctively positive for Bcl-2, but not for CD34 and Vim. INTERVENTIONS One of the two patients recurred 6 years after the first tumor resection. After the recurrence, two gamma knife treatments were given, and another operation was performed about five years later. In one case, only tumor resection was performed. OUTCOMES Case one: The postoperative neurological status was substantially improved and regular follow-up examinations for 6 months postsurgery have shown that the patient is currently disease-free. Case two: The patient achieved a good outcome, with no epilepsy or other neurological symptoms experienced on a regular 6-month follow-up. The patient is currently disease free. LESSONS Imaging findings can be used to assist the diagnosis. The diagnostic method is pathology, and total surgical resection is the most effective treatment. The main treatment methods were total resection, supplemented by radiotherapy and chemotherapy if necessary.
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Affiliation(s)
- Lian-Jie Sun
- Department of Neurosurgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi
| | - Jun Dong
- Department of Neurosurgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi
| | - Feng Gao
- Department of Neurosurgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi
| | - Dong-Ming Chen
- Department of Neurosurgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi
| | - Ke Li
- Department of Neurosurgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi
| | - Jiang Liu
- Department of Neurosurgery, China-Japan Friendship Hospital, No. 2, Yinghua East St., ChaoYang District, Beijing, China
| | - Cheng Zhang
- Department of Neurosurgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi
| | - Maitiyiming Tohti
- Department of Neurosurgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi
| | - Xiao-Peng Yang
- Department of Neurosurgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi
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Liu H, Du Y, Zhang Z, Lv L, Xiong W, Zhang L, Li N, He H, Li Q, Liu Y. Autophagy contributes to hypoxia-induced epithelial to mesenchymal transition of endometrial epithelial cells in endometriosis. Biol Reprod 2018; 99:968-981. [PMID: 29860279 PMCID: PMC6297317 DOI: 10.1093/biolre/ioy128] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 03/18/2018] [Accepted: 05/30/2018] [Indexed: 02/06/2023] Open
Abstract
Endometriosis is a benign gynecologic disorder, and presents with malignant characteristics, such as migration and invasion. Hypoxia has been implicated in triggering epithelial-mesenchymal transition (EMT). Hypoxia is also known to induce autophagy. However, the relationship between autophagy and EMT under hypoxia conditions in endometriosis remains unknown. In the present study, we found that the expression of hypoxia-inducible factor-1α (HIF-1α), microtubule associated protein light chain 3 (LC3), and mesenchymal cell marker vimentin was significantly higher in ectopic endometrium from patients with endometriosis, along with decreased expression of epithelial cell marker E-cadherin. After hypoxia treatment, endometrial epithelial cells exhibited enhanced migration and invasion abilities, as well as promoted autophagy and the EMT phenotype. Our analyses also show that HIF-1α was responsible for induction of autophagy. Moreover, inhibition of autophagy by chemical or genetic approaches suppressed hypoxia triggered EMT and reduced cell migration and invasion. Collectively, our findings identify that autophagy is critical for the migration and invasion of endometrial cells through the induction of EMT and indicate that inhibition of autophagy may be a novel useful strategy in the treatment of endometriosis.
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Affiliation(s)
- Hengwei Liu
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Du
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhibing Zhang
- Department of Obstetrics and Gynecology, Virginia Commonwealth University, Richmond, USA
| | - Liqun Lv
- Department of Obstetrics and Gynecology, Wu Han Kang Jian Fu Ying Hospital, Wuhan, China
| | - Wenqian Xiong
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ling Zhang
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Na Li
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haitang He
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qi Li
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi Liu
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Ding D, Li C, Zhao T, Li D, Yang L, Zhang B. LncRNA H19/miR-29b-3p/PGRN Axis Promoted Epithelial-Mesenchymal Transition of Colorectal Cancer Cells by Acting on Wnt Signaling. Mol Cells 2018; 41:423-435. [PMID: 29754471 PMCID: PMC5974619 DOI: 10.14348/molcells.2018.2258] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 12/30/2017] [Accepted: 01/14/2018] [Indexed: 02/07/2023] Open
Abstract
This investigation was aimed at working out the combined role of lncRNA H19, miR-29b and Wnt signaling in the development of colorectal cancer (CRC). In the aggregate, 185 CRC tissues and corresponding para-carcinoma tissues were gathered. The human CRC cell lines (i.e. HT29, HCT116, SW480 and SW620) and normal colorectal mucosa cell line (NCM460) were also purchased. Si-H19, si-NC, miR-29b-3p mimics, miR-29b-3p inhibitor, si-PGRN and negative control (NC) were, respectively, transfected into the CRC cells. Lucif-erase reporter plasmids were prepared to evaluate the transduction activity of Wnt/β-catenin signaling pathway, and dual-luciferase reporter gene assay was arranged to confirm the targeted relationship between H19 and miR-29b-3p, as well as between miR-29b-3p and PGRN. Finally, the proliferative and invasive capacities of CRC cells were appraised through transwell, MTT and scratch assays. As a result, over-expressed H19 and down-expressed miR-29b-3p displayed close associations with the CRC patients' poor prognosis (P < 0.05). Besides, transfection with si-H19, miR-29b-3p mimic or si-PGRN were correlated with elevated E-cadherin expression, decreased snail and vimentin expressions, as well as less-motivated cell proliferation and cell metastasis (P < 0.05). Moreover, H19 was verified to directly target miR-29b-3p based on the luciferase reporter gene assay (P < 0.05), and miR-29b-3p also bound to PGRN in a direct manner (P < 0.05). Finally, addition of LiCl (Wnt/β-catenin pathway activator) or XAV93920 (Wnt/β-catenin pathway inhibitor) would cause remarkably altered E-cadherin, c-Myc, vimentin and snail expressions, as well as significantly changed transcriptional activity of β-catenin/Tcf reporter plasmid (P < 0.05). In conclusion, the lncRNA H19/miR-29b-3p/PGRN/Wnt axis counted a great deal for seeking appropriate diagnostic biomarkers and treatment targets for CRC.
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Affiliation(s)
- Dayong Ding
- Department of Gastrointestinal Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033,
P.R. China
| | - Changfeng Li
- Department of Endoscopy Center, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033,
P.R. China
| | - Tiancheng Zhao
- Department of Endoscopy Center, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033,
P.R. China
| | - Dandan Li
- Department of Endoscopy Center, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033,
P.R. China
| | - Lei Yang
- Department of Endoscopy Center, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033,
P.R. China
| | - Bin Zhang
- Department of Endoscopy Center, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033,
P.R. China
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Sukhotnik I, Shahar YB, Pollak Y, Dorfman T, Shefer HK, Assi ZE, Mor-Vaknin N, Coran AG. The role of intermediate filaments in maintaining integrity and function of intestinal epithelial cells after massive bowel resection in a rat. Pediatr Surg Int 2018; 34:217-225. [PMID: 29043445 DOI: 10.1007/s00383-017-4192-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/21/2017] [Indexed: 01/22/2023]
Abstract
PURPOSE Intermediate filaments (IFs) are a part of the cytoskeleton that extend throughout the cytoplasm of all cells and function in the maintenance of cell-shape by bearing tension and serving as structural components of the nuclear lamina. In normal intestine, IFs provide a tissue-specific three-dimensional scaffolding with unique context-dependent organizational features. The purpose of this study was to evaluate the role of IFs during intestinal adaptation in a rat model of short bowel syndrome (SBS). MATERIALS AND METHODS Male rats were divided into two groups: Sham rats underwent bowel transection and SBS rats underwent a 75% bowel resection. Parameters of intestinal adaptation, enterocyte proliferation and apoptosis were determined 2 weeks after operation. Illumina's Digital Gene Expression (DGE) analysis was used to determine the cytoskeleton-related gene expression profiling. IF-related genes and protein expression were determined using real-time PCR, Western blotting and immunohistochemistry. RESULTS Massive small bowel resection resulted in a significant increase in enterocyte proliferation and concomitant increase in cell apoptosis. From the total number of 20,000 probes, 16 cytoskeleton-related genes were investigated. Between these genes, only myosin and tubulin levels were upregulated in SBS compared to sham animals. Between IF-related genes, desmin, vimentin and lamin levels were down-regulated and keratin and neurofilament remain unchanged. The levels of TGF-β, vimentin and desmin gene and protein were down-regulated in resected rats (vs sham animals). CONCLUSIONS Two weeks following massive bowel resection in rats, the accelerated cell turnover was accompanied by a stimulated microfilaments and microtubules, and by inhibited intermediate filaments. Resistance to cell compression rather that maintenance of cell-shape by bearing tension are responsible for contraction, motility and postmitotic cell separation in a late stage of intestinal adaptation.
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Affiliation(s)
- I Sukhotnik
- Laboratory of Intestinal Adaptation and Recovery, The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
- Department of Pediatric Surgery, Bnai Zion Medical Center, Golomb St., P.O.B. 4940, 31048, Haifa, Israel.
| | - Y Ben Shahar
- Laboratory of Intestinal Adaptation and Recovery, The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- Department of Pediatric Surgery, Bnai Zion Medical Center, Golomb St., P.O.B. 4940, 31048, Haifa, Israel
| | - Y Pollak
- Laboratory of Intestinal Adaptation and Recovery, The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - T Dorfman
- Laboratory of Intestinal Adaptation and Recovery, The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - H Kreizman Shefer
- Laboratory of Intestinal Adaptation and Recovery, The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Z E Assi
- Laboratory of Intestinal Adaptation and Recovery, The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- Department of Pediatric Surgery, Bnai Zion Medical Center, Golomb St., P.O.B. 4940, 31048, Haifa, Israel
| | - N Mor-Vaknin
- Department of Internal Medicine, C.S. Mott Children's Hospital, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - A G Coran
- Section of Pediatric Surgery, C.S. Mott Children's Hospital, University of Michigan Medical School, Ann Arbor, Michigan, USA
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Zhiping C, Shijun T, Linhui W, Yapei W, Lianxi Q, Qiang D. MiR-181a promotes epithelial to mesenchymal transition of prostate cancer cells by targeting TGIF2. Eur Rev Med Pharmacol Sci 2017; 21:4835-4843. [PMID: 29164579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE Prostate cancer is the most commonly diagnosed cancer, and metastatic prostate cancer often leads to poor outcomes for patients. During the metastasis processes, cancer cells acquire a migratory and invasive phenotype. Epithelial to mesenchymal transition (EMT) has been implicated in multiple processes of prostate cancer development including migration, chemoresistance, and carcinogenesis. PATIENTS AND METHODS Expressions of miR-181a in prostate tumor samples and cancer cells were measured by qRT-PCR. Epithelial or mesenchymal markers were detected by Western blot. Nuclear translocation of Smad 2/3 was measured by immunostaining of prostate cancer cells. RESULTS In this study, we report an oncogenic role of microRNA-181a in prostate cancer cells and patients. MiR-181a is upregulated in metastatic prostate tumor samples compared with primary prostate tumors. Interestingly, we found that overexpression of miR-181a promotes prostate cancer cell migration and invasion. Moreover, we observed that overexpression of miR-181a contributes to an epithelial to mesenchymal transition phenotype in prostate cancer cells: the epithelial marker, E-cadherin was downregulated, and mesenchymal markers, N-cadherin, vimentin, and snail were upregulated. Consistently, the phosphorylation of Smad 2/3 and the nuclear localization of Smad 2/3 were increased by miR-181a expression. We identified that TGIF2 - a repressor of the Smad pathway - is a direct target of miR-181a in prostate cancer cells. Importantly, restoration of TGIF2 in miR-181a overexpressing prostate cancer cells inhibited the Smad pathway and EMT processes. CONCLUSIONS This research identifies a molecular mechanism for microRNA-mediated cancer metastasis and improvement novel therapeutic avenue for metastatic prostate cancer patient treatments.
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Affiliation(s)
- C Zhiping
- Department of Urology, Huashan Hospital Affiliated to Fudan University, Shanghai, China.
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11
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Lu R, Zhou Z, Yu W, Xia Y, Zhi X. CPEB4 promotes cell migration and invasion via upregulating Vimentin expression in breast cancer. Biochem Biophys Res Commun 2017; 489:135-141. [PMID: 28536077 DOI: 10.1016/j.bbrc.2017.05.112] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 05/19/2017] [Indexed: 02/07/2023]
Abstract
Cytoplasmic polyadenylation element binding protein 4 (CPEB4) is a member of CPEB family which is overexpressed in variety of cancers. However, the biological role and regulatory mechanism of CPEB4 in cancers remain unknown. Here, we first investigate the role of CPEB4 in breast cancer progression and metastasis. The expression of CPEB4 is elevated in breast cancer tissues compared with adjacent normal tissues. Furthermore, high expression levels of CPEB4 is associated with tumor metastasis in breast cancer patients. Ectopic expression of CPEB4 dramatically promotes EMT, migration and invasion of breast cancer cells, while silencing CPEB4 expression significantly reduces these events. Mechanically, overexpression of CPEB4 upregulates Vimentin expression and silencing Vimentin expression blocks CPEB4-induced migration and invasion of breast cancer cells. These results implicate the potential role of CPEB4 and Vimentin in breast cancer metastasis, which is further confirmed by the finding that there is a physical interaction between the two proteins. Altogether, our results provide a novel insight into CPEB4 in regulating breast cancer progression and metastasis.
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Affiliation(s)
- Ran Lu
- Department of General Surgery, Qilu Hospital of Shandong University, 107 Wen Hua Xi Road, Jinan, Shandong 250012, PR China; Department of Vascular Surgery, The First Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Bengbu, Anhui, 233004, PR China
| | - Zhiqiang Zhou
- Department of Pathology, School of Basic Medical Sciences of Shandong University, Wen Hua Xi Road 44, Jinan, 250012, PR China
| | - Wenfei Yu
- Department of Anatomy, School of Basic Medical Sciences of Shandong University, 44 Wen Hua Xi Road, Jinan, Shandong 250012, PR China
| | - Yifu Xia
- Department of Anatomy, School of Basic Medical Sciences of Shandong University, 44 Wen Hua Xi Road, Jinan, Shandong 250012, PR China
| | - Xuting Zhi
- Department of General Surgery, Qilu Hospital of Shandong University, 107 Wen Hua Xi Road, Jinan, Shandong 250012, PR China.
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12
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Yu M, Han G, Qi B, Wu X. Cx32 reverses epithelial-mesenchymal transition in doxorubicin-resistant hepatocellular carcinoma. Oncol Rep 2017; 37:2121-2128. [PMID: 28260043 DOI: 10.3892/or.2017.5462] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 11/30/2016] [Indexed: 11/06/2022] Open
Abstract
Recently, epithelial-mesenchymal transition (EMT) has been reported to be an important mechanism of drug resistance in numerous types of cancer cells, including hepatocellular carcinoma (HCC). However, the underlying mechanisms remain to be fully elucidated. Connexin (Cx)32 plays a crucial role in hepatocarcinogenesis. The present study investigated the role of Cx32 in the regulation of chemotherapy-induced EMT in HCC. We found that the expression levels of Cx32 and E-cadherin were clearly decreased in HCC tissues compared with the corresponding paracancerous tissues, while the expression level of vimentin was significantly enhanced in HCC tissues. The expression of Cx32 had a strong correlation with the expression of E-cadherin and vimentin. In an in vitro study, a doxorubicin (DOX)-resistant liver cell line HepG2/DOX was established from parental HepG2 cells. The results showed that HepG2/DOX cells acquired EMT characteristics, with a decreased expression level of E-cadherin and an enhanced expression level of vimentin, and possessed high migratory abilities and invasiveness. Meanwhile, Cx32 was significantly decreased in the HepG2/DOX cells. Knockdown of Cx32 by shRNA in HepG2 cells induced EMT, while overexpression of Cx32 converted EMT to mesenchymal-epithelial transition (MET) in the HepG2/DOX cells. These results suggest that Cx32 is an important regulator of DOX-induced EMT in HCC. Cx32 could be considered as a novel target to reverse DOX resistance in HCC.
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Affiliation(s)
- Meiling Yu
- Department of Pharmacy, The First Affiliated Hospital of Bengbu Medical College, Anhui, Bengbu 233004, P.R. China
| | - Guangshu Han
- Faculty of Pharmacy, Bengbu Medical College, Anhui, Bengbu 233030, P.R. China
| | - Benquan Qi
- Department of Emergency Internal Medicine, The First Affiliated Hospital of Bengbu Medical College, Anhui, Bengbu 233004, P.R. China
| | - Xiaoxiang Wu
- Department of Pharmacy, The Second Affiliated Hospital of Bengbu Medical College, Anhui, Bengbu 233004, P.R. China
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13
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Bryja A, Dyszkiewicz-Konwińska M, Chachuła A, Ciesiółka S, Kranc W, Bukowska D, Antosik P, Bruska M, Nowicki M, Zabel M, Kempisty B. Differential expression and distribution of cytokeratins and vimentin in buccal pouch mucosal cells during real-time cell proliferation: research based on a porcine model. J BIOL REG HOMEOS AG 2016; 30:951-960. [PMID: 28078841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In recent years, buccal pouch oral mucosa cells were used as a source of potential biological grafting material in advanced tissue engineering. However, there are several limitations in the process of graft fabrication: donor and recipient patient availability as well as an incomplete knowledge of in vitro procedures related to tissue surgical recovery, in vitro cell culture (IVC) and/or tissue processing in “human somatic cell therapy.” Therefore, the animal model for oral mucosa grafting is still recognized as a source for xenografts and a useful model for biomedical research. In this study, the porcine buccal pouch oral mucosa cells were used in analysis of the stromalization/epithelialization process during short-term, in vitro real-time cell proliferation. We evaluated cytokeratin 18 (CK18), cytokeratin 8 + 18 + 19 (panCK), and vimentin (Vim) expression as epithelial and stromal cell markers, respectively. The porcine buccal pouch oral mucosa cells were cultured in vitro for 168 h, and the protein expression/ distribution was analyzed every 24 h during real-time cell proliferation. In our analysis of protein expression using fluorescence intensity (FI), followed by confocal microscopic observations, we found the highest expression of CK18 occurred after 24 h of IVC, panCK after 72 h, and Vim after 48 h of IVC, as compared to other cultivation periods. We also found a substantial increase in Vim expression (3-4 fold) as compared to CK18 and panCK, and all of the investigated proteins were distributed in the cellular cytoplasm. The lag phase of cell proliferation occurred during the first 24 h of IVC, whereas the log phase was observed between 24 h-120 h of IVC. Throughout 7 days of IVC, statistically significant differences were found in Cell Index (CI) of the analyzed cells. Increased Vim expression in buccal pouch oral mucosa cells, as compared to CK18 and panCK, suggested that the stromal cells substantially predominated during in vitro cell cultivation. This may be a result of significant specificity of porcine oral mucosa cells isolated from the buccal pouch.
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Affiliation(s)
- A Bryja
- Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland
| | - M Dyszkiewicz-Konwińska
- Department of Biomaterials and Experimental Dentistry, Poznan University of Medical Sciences, Poznan, Poland
| | - A Chachuła
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
| | - S Ciesiółka
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
| | - W Kranc
- Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland
| | - D Bukowska
- Institute of Veterinary Sciences, Poznan University of Life Sciences, Poznan, Poland
| | - P Antosik
- Institute of Veterinary Sciences, Poznan University of Life Sciences, Poznan, Poland
| | - M Bruska
- Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland
| | - M Nowicki
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
| | - M Zabel
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
- Department of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - B Kempisty
- Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
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14
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Abstract
We have previously demonstrated that concentrations of 1-10 μM of methylmercuric chloride (MeHgCl) that are cytotoxic to monocytes-macrophages can curiously inhibit neutrophil apoptosis by a yet unknown mechanism. In the present study, we demonstrate that, as with the cytokine granulocyte-macrophage colony-stimulating factor (GM-CSF), a classical inhibitor of neutrophil apoptosis, treatment of cells with 5 M MeHgCl inducesde novo protein synthesis and prevents the loss of expression of the antiapoptotic Mcl-1 protein. The expression of the cytoskeletal proteins gelsolin, paxillin and vinculin was similar in MeHgCl or GM-CSF-induced suppression of apoptosis. However, MeHgCl prevents the degradation of vimentin differently than GM-CSF. Apoptosis was further confirmed by flow cytometry (FITC annexin-V), and by monitoring CD16 cell surface expression. Curiously, unlike GM-CSF, MeHgCl did not prevent CD16 shedding. We conclude that, like GM-CSF, MeHgCl can delay neutrophil apoptosis by inducing de novoprotein synthesis and by preventing the loss of the antiapoptotic Mcl-1 protein. However, unlike GM-CSF, MeHgCl induces an atypical degradation of vimentin without preventing CD16 shedding.
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Affiliation(s)
- Eliane Moisan
- INRS-Institut Armand-Frappier, Université du Québec, 245 boulevard Hymus, Pointe-Claire, PQ, Canada
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15
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Ciesiółka S, Bryja A, Budna J, Kranc W, Chachuła A, Bukowska D, Piotrowska H, Porowski L, Antosik P, Bruska M, Brüssow KP, Nowicki M, Zabel M, Kempisty B. Epithelialization and stromalization of porcine follicular granulosa cells during real-time proliferation - a primary cell culture approach. J BIOL REG HOMEOS AG 2016; 30:693-702. [PMID: 27655486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The process of oocyte growth and development takes place during long stages of folliculogenesis and oogenesis. This is accompanied by biochemical and morphological changes, occurring from the preantral to antral stages during ovarian follicle differentiation. It is well known that the process of follicle growth is associated with morphological modifications of theca (TCs) and granulosa cells (GCs). However, the relationship between proliferation and/or differentiation of porcine GCs during long-term in vitro culture requires further investigation. Moreover, the expression of cytokeratins and vimentin in porcine GCs, in relation to real-time cell proliferation, has yet to be explored. Utilizing confocal microscopy, we analyzed cytokeratin 18 (CK18), cytokeratin 8 + 18 + 19 (panCK), and vimentin (Vim) expression, as well as their protein distribution, within GCs isolated from slaughtered ovarian follicles. The cells were cultured for 168 h with protein expression and cell proliferation index analyzed at 24-h intervals. We found the highest expression of CK18, panCK, and Vim occurred at 120 h of in vitro culture (IVC) as compared with other experimental time intervals. All of the investigated proteins displayed cytoplasmic distribution. Analysis of real-time cell proliferation revealed an increased cell index after the first 24 h of IVC. Additionally, during each period between 24-168 h of IVC, a significant difference in the proliferation profile, expressed as the cell index, was also observed. We concluded that higher expression of vimentin at 120 h of in vitro proliferation might explain the culmination of the stromalization process associated with growth and domination of stromal cells in GC culture. Cytokeratin expression within GC cytoplasm confirms the presence of epithelial cells as well as epithelial-related GC development during IVC. Moreover, expression of both cytokeratins and vimentin during short-term culture suggests that the process of GC proliferation is also highly associated with porcine ovarian follicular granulosa cell differentiation in vitro.
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Affiliation(s)
- S Ciesiółka
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
| | - A Bryja
- Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland
| | - J Budna
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
| | - W Kranc
- Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland
| | - A Chachuła
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
| | - D Bukowska
- Institute of Veterinary Sciences, Poznan University of Life Sciences, Poznan, Poland
| | - H Piotrowska
- Department of Toxicology, Poznan University of Medical Sciences, Poznan, Poland
| | - L Porowski
- Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland
| | - P Antosik
- Institute of Veterinary Sciences, Poznan University of Life Sciences, Poznan, Poland
| | - M Bruska
- Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland
| | - K P Brüssow
- Institute of Veterinary Sciences, Poznan University of Life Sciences, Poznan, Poland
| | - M Nowicki
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
| | - M Zabel
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland; Department of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - B Kempisty
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland; Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland
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16
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Abstract
Kidneys from lambs derived by nuclear transfer are frequently abnormal and are characterized by an enlarged pelvis and narrow medulla, consistent with lower urinary tract obstruction and development of variable hydronephrosis. The precise pathogenesis of this entity is unknown. Immunohistochemical staining for intermediate filaments was used to further characterize the lesions seen in this condition and was compared with age-matched control tissue. Major findings were upregulation of cytokeratin on damaged tubules, desmin and vimentin in undifferentiated mesenchyme, and smooth muscle actin in mesenchyme and on smooth muscle “collars” around dilated tubules. In addition, some cases showed reexpression of vimentin and desmin on proximal tubular epithelial cells. Taken together, these findings provide a valuable database for tracking the expression of intermediate filaments throughout renal development in sheep and have further characterized the nature of the response to injury by the developing kidney, a response that is characterized by proliferation of mesenchyme and both reexpression and upregulation of intermediate filaments within renal cells. In addition, the study has confirmed that the changes in cloned lamb nephropathy are established by day 85 of development.
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Affiliation(s)
- Andrew J Dawson
- Dept. of Veterinary Pathology, Easter Bush Veterinary Centre, Roslin, Midlothian, Scotland, UK EH25 9RG
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17
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Stewart TA, Azimi I, Brooks AJ, Thompson EW, Roberts-Thomson SJ, Monteith GR. Janus kinases and Src family kinases in the regulation of EGF-induced vimentin expression in MDA-MB-468 breast cancer cells. Int J Biochem Cell Biol 2016; 76:64-74. [PMID: 27163529 DOI: 10.1016/j.biocel.2016.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 04/07/2016] [Accepted: 05/06/2016] [Indexed: 12/20/2022]
Abstract
Epithelial-mesenchymal transition (EMT) is an important process associated with the metastasis of breast cancer cells. Members of the Janus kinases (JAKs) and Src family kinases (SFKs) are implicated in the regulation of an invasive phenotype in various cancer cell types. Using the pharmacological inhibitors JAK Inhibitor I (a pan-JAK inhibitor) and PP2 we investigated the role of the JAKs and SFKs, respectively, in the regulation of EMT markers in the MDA-MB-468 breast cancer cell line model of epidermal growth factor (EGF)-induced EMT. We identified selective inhibition of EGF induction of the mesenchymal marker vimentin by PP2 and JAK Inhibitor I. The effect of JAK Inhibitor I on vimentin protein induction occurred at a concentration lower than that required to significantly inhibit EGF-mediated signal transducer and activator of transcription 3 (STAT3)-phosphorylation, suggesting involvement of a STAT3-independent mechanism of EGF-induced vimentin regulation by JAKs. Despite our identification of a role for the JAK family in EGF-induced vimentin protein expression, siRNA-mediated silencing of each member of the JAK family was unable to phenocopy pharmacological inhibition, indicating potential redundancy among the JAK family members in this pathway. While SFKs and JAKs do not represent global regulators of the EMT phenotype, our findings have identified a role for members of these signaling pathways in the regulation of EGF-induced vimentin expression in the MDA-MB-468 breast cancer cell line.
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Affiliation(s)
- Teneale A Stewart
- School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia
| | - Iman Azimi
- School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia; Mater Research, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Andrew J Brooks
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia; The University of Queensland, Translational Research Institute, Brisbane, QLD, Australia
| | - Erik W Thompson
- Institute of Health and Biomedical Innovation and School of Biomedical Sciences, Queensland University of Technology, Kelvin Grove, QLD, Australia; Australia and Translational Research Institute, Brisbane, QLD, Australia
| | | | - Gregory R Monteith
- School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia; Mater Research, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia.
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18
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Lv N, Shan Z, Gao Y, Guan H, Fan C, Wang H, Teng W. Twist1 regulates the epithelial-mesenchymal transition via the NF-κB pathway in papillary thyroid carcinoma. Endocrine 2016; 51:469-77. [PMID: 26289126 DOI: 10.1007/s12020-015-0714-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 08/01/2015] [Indexed: 12/16/2022]
Abstract
Expression of the oncogene Twist1 is correlated with tumor development and metastasis. Recent studies have suggested that the epithelial-to-mesenchymal transition (EMT) is necessary for tumor progression and metastases. Little is known concerning the role of Twist1 and EMT in thyroid cancer. In the present work, the expression levels of Twist1 and one marker of EMT, vimentin, were measured in papillary thyroid carcinoma (PTC). The results showed Twist1 expression to be correlated only with cancer lymph node metastases (P = 0.004) and not with other clinicopathological indicators. Moreover, Twist1 expression was positively correlated with the expression of vimentin (r = 0.408, P = 0.003). In vitro studies further indicated that reducing Twist1 expression using short hairpin RNA against Twist1 can decrease the invasive and metastatic properties of PTC cells and that the down-regulation of Twist1 can reverse EMT by increasing the expression of E-cadherin and down-regulating the expression of vimentin in the PTC cell line IHH-4. To investigate the effects on Twist1, the PTC cell lines TPC-1 and BCPAP were treated with TNF-α, resulting in Twist1 up-regulation that was dependent on NF-κB activation. After the inhibition of NF-κB activity with Bay11-7082, the Twist1 mRNA and protein levels could not be increased. The decline in the Twist1 mRNA and protein levels rendered the cancer cells less invasive. Thus, we conclude that Twist1 plays an important role in the EMT of PTC via the NF-κB pathway.
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Affiliation(s)
- Nannan Lv
- Department of Endocrinology and Metabolism, The Endocrine Institute and The Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Zhongyan Shan
- Department of Endocrinology and Metabolism, The Endocrine Institute and The Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, 110001, China.
| | - Yun Gao
- Research Center of Stem Cell, He Eye Hospitals, He University, Shenyang, 110163, China.
| | - Haixia Guan
- Department of Endocrinology and Metabolism, The Endocrine Institute and The Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Chenling Fan
- Department of Endocrinology and Metabolism, The Endocrine Institute and The Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Hong Wang
- Department of Endocrinology and Metabolism, The Endocrine Institute and The Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Weiping Teng
- Department of Endocrinology and Metabolism, The Endocrine Institute and The Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Hospital of China Medical University, Shenyang, 110001, China
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Kumagai A, Suga M, Yanagihara K, Itoh Y, Takemori H, Furue MK. A Simple Method for Labeling Human Embryonic Stem Cells Destined to Lose Undifferentiated Potency. Stem Cells Transl Med 2016; 5:275-81. [PMID: 26819254 DOI: 10.5966/sctm.2015-0145] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 10/23/2015] [Indexed: 12/19/2022] Open
Abstract
Mitochondrial oxidative phosphorylation is a major source of cellular ATP. Its usage as an energy source varies, not only according to the extracellular environment, but also during development and differentiation, as indicated by the reported changes in the flux ratio of glycolysis to oxidative phosphorylation during embryonic stem (ES) cell differentiation. The fluorescent probe JC-1 allows visualization of changes in the mitochondrial membrane potential produced by oxidative phosphorylation. Strong JC-1 signals were localized in the differentiated cells located at the edge of H9 ES colonies that expressed vimentin, an early differentiation maker. The JC-1 signals were further intensified when individual adjacent colonies were in contact with each other. Time-lapse analyses revealed that JC-1-labeled H9 cells under an overconfluent condition were highly differentiated after subculture, suggesting that monitoring oxidative phosphorylation in live cells might facilitate the prediction of induced pluripotent stem cells, as well as ES cells, that are destined to lose their undifferentiated potency.
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Affiliation(s)
- Ayako Kumagai
- Laboratory of Cell Signaling and Metabolic Disease, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Mika Suga
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Kana Yanagihara
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Yumi Itoh
- Laboratory of Cell Signaling and Metabolic Disease, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Hiroshi Takemori
- Laboratory of Cell Signaling and Metabolic Disease, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Miho K Furue
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
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Chen W, Hu Z, Li XZ, Li JL, Xu XK, Li HG, Liu Y, Liu BH, Jia WH, Li FC. CPEB4 interacts with Vimentin and involves in progressive features and poor prognosis of patients with astrocytic tumors. Tumour Biol 2015; 37:5075-87. [PMID: 26546435 DOI: 10.1007/s13277-015-3975-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 08/21/2015] [Indexed: 01/16/2023] Open
Abstract
Cytoplasmic polyadenylation element binding protein 4 (CPEB4) is a regulator of gene transcription and has been reported to be associated with biological malignancy in cancers. However, it is unclear whether CPEB4 has any clinical significance in patients with astrocytic tumors, and mechanisms that CPEB4 contribute to progression of astrocytic tumors remain largely unknown. Here, correlation between CPEB4 expression and prognosis of patients with astrocytic tumors were explored by using qPCR, WB and IHC, and X-tile, SPSS software. Cell lines U251 MG and A172 were used to study CPEB4's function and mechanisms. Co-immunoprecipitation, mass spectrometry, immunofluorescent assay, and western blot were performed to observe the interaction between CPEB4 and Vimentin. CPEB4 mRNA and protein levels were markedly elevated in 12/12 astrocytic tumors in comparison to paratumor. High expression of CPEB4 was significantly correlated with clinical progressive futures and work as an independent adverse prognostic factor for overall survival of patients with astrocytic tumors (relative risk 4.5, 95 % CI 2.1-11.2, p = 0.001). Moreover, knockdown of CPEB4 in astrocytic tumor cells inhibited their proliferation ability , clonogenicity, and invasiveness. Five candidate proteins, GRP78, Mortalin, Keratin, Vimentin, and β-actin, were identified, and the interaction between CPEB4 and Vimentin was finally confirmed. Downregulation of CPEB4 could reduce the protein expression of Vimentin. Our studies first validated that CPEB4 interacts with Vimentin and indicated that high CPEB4 expression in astrocytic tumors correlates closely with a clinically aggressive future, and that CPEB4 might represent a valuable prognostic marker for patients with astrocytic tumors.
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Affiliation(s)
- Wei Chen
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China
- Department of Neurosurgery, Guangzhou Women and Children's Medical Center, No. 9 Jinsui Road, Guangzhou, 510623, China
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, 651 Dongfeng East Road, Guangzhou, China
| | - Zhen Hu
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China
| | - Xi-Zhao Li
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, 651 Dongfeng East Road, Guangzhou, China
| | - Jun-Liang Li
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China
- Department of Neurosurgery, Guangzhou Women and Children's Medical Center, No. 9 Jinsui Road, Guangzhou, 510623, China
| | - Xin-Ke Xu
- Department of Neurosurgery, Guangzhou Women and Children's Medical Center, No. 9 Jinsui Road, Guangzhou, 510623, China
| | - Hai-Gang Li
- Department of Pathology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China
| | - Yeqing Liu
- Department of Pathology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China
| | - Bai-Hui Liu
- Department of General Surgery, The Second Affiliated Hospital of GuangDong Pharmaceutical University, No. 167 Xingang Xi Road, Guangzhou, 510275, China
| | - Wei-Hua Jia
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, 651 Dongfeng East Road, Guangzhou, China.
| | - Fang-Cheng Li
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China.
- Department of Neurosurgery, Guangzhou Women and Children's Medical Center, No. 9 Jinsui Road, Guangzhou, 510623, China.
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Morgan JT, Raghunathan VK, Chang YR, Murphy CJ, Russell P. The intrinsic stiffness of human trabecular meshwork cells increases with senescence. Oncotarget 2015; 6:15362-74. [PMID: 25915531 PMCID: PMC4558157 DOI: 10.18632/oncotarget.3798] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Accepted: 03/20/2015] [Indexed: 12/26/2022] Open
Abstract
Dysfunction of the human trabecular meshwork (HTM) plays a central role in the age-associated disease glaucoma, a leading cause of irreversible blindness. The etiology remains poorly understood but cellular senescence, increased stiffness of the tissue, and the expression of Wnt antagonists such as secreted frizzled related protein-1 (SFRP1) have been implicated. However, it is not known if senescence is causally linked to either stiffness or SFRP1 expression. In this study, we utilized in vitro HTM senescence to determine the effect on cellular stiffening and SFRP1 expression. Stiffness of cultured cells was measured using atomic force microscopy and the morphology of the cytoskeleton was determined using immunofluorescent analysis. SFRP1 expression was measured using qPCR and immunofluorescent analysis. Senescent cell stiffness increased 1.88±0.14 or 2.57±0.14 fold in the presence or absence of serum, respectively. This was accompanied by increased vimentin expression, stress fiber formation, and SFRP1 expression. In aggregate, these data demonstrate that senescence may be a causal factor in HTM stiffening and elevated SFRP1 expression, and contribute towards disease progression. These findings provide insight into the etiology of glaucoma and, more broadly, suggest a causal link between senescence and altered tissue biomechanics in aging-associated diseases.
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Affiliation(s)
- Joshua T. Morgan
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - Vijay Krishna Raghunathan
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - Yow-Ren Chang
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - Christopher J. Murphy
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA
- Department of Ophthalmology &; Vision Science, School of Medicine, University of California, Davis, CA, USA
| | - Paul Russell
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA
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22
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Holland A, Henry M, Meleady P, Winkler CK, Krautwald M, Brinkmeier H, Ohlendieck K. Comparative Label-Free Mass Spectrometric Analysis of Mildly versus Severely Affected mdx Mouse Skeletal Muscles Identifies Annexin, Lamin, and Vimentin as Universal Dystrophic Markers. Molecules 2015; 20:11317-44. [PMID: 26102067 PMCID: PMC6272583 DOI: 10.3390/molecules200611317] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 06/10/2015] [Accepted: 06/12/2015] [Indexed: 11/16/2022] Open
Abstract
The primary deficiency in the membrane cytoskeletal protein dystrophin results in complex changes in dystrophic muscles. In order to compare the degree of secondary alterations in differently affected subtypes of skeletal muscles, we have conducted a global analysis of proteome-wide changes in various dystrophin-deficient muscles. In contrast to the highly degenerative mdx diaphragm muscle, which showed considerable alterations in 35 distinct proteins, the spectrum of mildly to moderately dystrophic skeletal muscles, including interosseus, flexor digitorum brevis, soleus, and extensor digitorum longus muscle, exhibited a smaller number of changed proteins. Compensatory mechanisms and/or cellular variances may be responsible for differing secondary changes in individual mdx muscles. Label-free mass spectrometry established altered expression levels for diaphragm proteins associated with contraction, energy metabolism, the cytoskeleton, the extracellular matrix and the cellular stress response. Comparative immunoblotting verified the differences in the degree of secondary changes in dystrophin-deficient muscles and showed that the up-regulation of molecular chaperones, the compensatory increase in proteins of the intermediate filaments, the fibrosis-related increase in collagen levels and the pathophysiological decrease in calcium binding proteins is more pronounced in mdx diaphragm as compared to the less severely affected mdx leg muscles. Annexin, lamin, and vimentin were identified as universal dystrophic markers.
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Affiliation(s)
- Ashling Holland
- Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland.
| | - Michael Henry
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Ireland.
| | - Paula Meleady
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Ireland.
| | - Claudia K Winkler
- Institute of Pathophysiology, University Medicine Greifswald, D-17495 Karlsburg, Germany.
| | - Mirjam Krautwald
- Institute of Pathophysiology, University Medicine Greifswald, D-17495 Karlsburg, Germany.
| | - Heinrich Brinkmeier
- Institute of Pathophysiology, University Medicine Greifswald, D-17495 Karlsburg, Germany.
| | - Kay Ohlendieck
- Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland.
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23
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Che J, Yang Y, Xiao J, Zhao P, Yan B, Dong S, Cao B. Decreased expression of claudin-3 is associated with a poor prognosis and EMT in completely resected squamous cell lung carcinoma. Tumour Biol 2015; 36:6559-68. [PMID: 25820701 DOI: 10.1007/s13277-015-3350-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 03/16/2015] [Indexed: 01/16/2023] Open
Abstract
The deregulation of claudin-3 has been reported to correlate with the invasion and metastasis of various cancers, but little is known about its expression level and the prognostic value in squamous cell lung carcinoma (SqCC). The purpose of this study is to determine the expression levels and the prognostic value of claudin-3 in completely resected SqCC tissues, and the potential underlying mechanism. The protein expression of claudin-3, E-cadherin, β-catenin, and vimentin in the tumor tissues from 103 patients with surgically resected SqCC was examined using immunohistochemistry, western blots, as well as semi-quantitative estimation. The claudin-3 protein level was significantly associated with E-cadherin, β-catenin, and vimentin protein expression. A decreased claudin-3 protein level was significantly correlated with TNM stage, lymph node metastasis, and disease recurrence. Similarly, downregulation of E-cadherin was significantly correlated with lymph node metastasis and disease recurrence. Decreased β-catenin expression also had a significant correlation with disease recurrence. Univariate analyses indicated that the T stage, lymph node metastasis, the TNM stage, and the expression of claudin-3, β-catenin, and vimentin were significant predictors for overall survival (OS). Moreover, multivariate analyses demonstrated that the TNM stage and protein levels of claudin-3, β-catenin, and vimentin were independent predictors for OS of SqCC patients. Claudin-3 plays an important role in the epithelial-mesenchymal transition of SqCC and might be used as a potential prognostic factor for SqCC.
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Affiliation(s)
- Juanjuan Che
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, #95 Yong An Road, Xicheng District, Beijing, 100050, People's Republic of China
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24
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Zhou J, Tao D, Xu Q, Gao Z, Tang D. Expression of E-cadherin and vimentin in oral squamous cell carcinoma. Int J Clin Exp Pathol 2015; 8:3150-3154. [PMID: 26045832 PMCID: PMC4440141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 02/02/2015] [Indexed: 06/04/2023]
Abstract
The aim of the study is to determine the levels of E-cadherin, vimentin expression in tumor tissues from patients with oral squamous cell carcinoma (OSCC), and the relationship between the expression of E-cadherin, vimentin and epithelial-mesenchymal transition, in order to explore its values for predicting the invasion and metastasis of oral squamous cell carcinoma, short survival of patients in many types of cancer. E-cadherin and vimentin expression of 10 benign and 42 OSCC tumor tissues was examined by immunohistochemical staining. E-cadherin is positively expressed in normal oral mucosa epithelium, but vimentin expression is not found in normal oral mucosa epithelia; the E-cadherin and vimentin were expressed in 26 of 42 (61.9%) and 16 of 42 (38.1%), respectively. No statistically difference was found for E-cadherin and vimentin expression in patients with different age, gender and tumor location, E-cadherin and vimentin expression was significantly associated with lymph node metastasis and tissue location (P<0.05); E-cadherin expression was also significantly associated with tumor stage (P<0.05); there are significantly difference between infiltrative margin and central area in patients with oral squamous cell carcinoma for E-cadherin and vimentin positive expression (P<0.05). E-cadherin and vimentin positive expression was associated with tumor metastasis of oral squamous cell carcinoma. Our study preliminarily confirmed that EMT phenomenon is existed during the development of oral squamous cell carcinoma. Co-evaluation of E-cadherin and vimentin might be a valuable tool for predicting OSCC patient outcome.
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Affiliation(s)
- Jingping Zhou
- School of Stomatology, Wannan Medical CollegeWuhu 241002, Anhui, China
| | - Detao Tao
- Department of Oral and Maxillofacial Surgery, Yijishan Hospital of Wannan Medical CollegeWuhu 241001, Anhui, China
| | - Qing Xu
- School of Stomatology, Wannan Medical CollegeWuhu 241002, Anhui, China
| | - Zhenlin Gao
- Department of Oncology IV, First Hospital of ShijiazhuangShijiazhuang, 050011, Hebei, China
| | - Daofang Tang
- School of Stomatology, Wannan Medical CollegeWuhu 241002, Anhui, China
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25
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Wang TC, Luo SJ, Lin CL, Chang PJ, Chen MF. Modulation of p75 neurotrophin receptor under hypoxic conditions induces migration and invasion of C6 glioma cells. Clin Exp Metastasis 2014; 32:73-81. [PMID: 25527128 DOI: 10.1007/s10585-014-9692-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 12/08/2014] [Indexed: 01/07/2023]
Abstract
p75 neurotrophin receptor (p75NTR) has been reported to play important roles in various cancer types. However, the exact mechanism of tumorigenesis involving p75NTR is unknown. In this study, we investigated the relationship between the expression of p75NTR in malignant glioma and the impact on tumor cell migration and invasion. p75NTR and hypoxia-inducible factor-1α (HIF-1α) expression was down-regulated by short-hairpin RNA and up-regulated with expression vectors. By immunohistochemical staining and Western blot analysis, we found that p75NTR was expressed in both human and rat malignant gliomas. Knockdown of p75NTR increased the expression of vimentin, vascular endothelial growth factor, Matrix metalloproteinase 9, and TWIST, and enhanced the invasion and migration abilities assessed by transwell assay in the C6 tumor cells. Inverse expressions of p75NTR and HIF-1α were detected in glioma cell lines under hypoxic conditions, while increased HIF-1α significantly downregulated the expression of p75NTR, suggesting a HIF-1α-p75NTR-EMT pathway that may regulate glioma cells invasion and migration. Downregulation of p75NTR increased phosphorylation of Src, focal adhesion kinase (FAK) and paxillin. Knockdown of p75NTR also dysregulated β-catenin-mediated cell junctions, and up-regulated the expressions of fibronectin and L1CAM in the cell-cell junctions, thus suggesting that p75NTR knockdown contributed to a more aggressive migration phenotype via FAK signaling pathway. Our studies suggested that modulation of p75NTR under hypoxic condition could enhance C6 cells migration and invasion by induction of EMT, and activation of the FAK pathway. The HIF-1α-p75NTR-EMT axis may play a central role in glioma tumorigenesis.
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Affiliation(s)
- Ting-Chung Wang
- Division of Neurosurgery, Department of Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan
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26
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Hirano H, Kizaki T, Ito T, Okimura A, Yamanegi K, Nakasho K. Expression of adhesion molecules and the proliferative activity of carcinosarcoma of the ovary. Anticancer Res 2014; 34:7351-7356. [PMID: 25503171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND To clarify the mechanism underlying the formation of a sarcomatous component of ovarian carcinosarcoma, we investigated the expression of adhesion molecules and the proliferative activity of carcinosarcomas. MATERIALS AND METHODS We immunohistochemically examined the expression of E-cadherin and β-catenin, and the Ki-67 labeling index (Ki-67 LI) in six carcinosarcomas containing endometrioid carcinoma as a carcinomatous component. RESULTS The sarcomatous components of the carcinosarcomas did not express E-cadherin or β-catenin. All carcinomatous components expressed these molecules but the expression was reduced compared to that in endometrioid ovarian carcinomas. In five of the six carcinosarcomas, the Ki-67 LI of the sarcomatous component was less than that of the carcinomatous component. CONCLUSION The present results suggest that a carcinomatous component transforms more easily than an ordinary endometrioid carcinoma from the viewpoint of the cell adhesion, and cells in a carcinomatous component continuously transform into sarcomatous cells during the growth of carcinosarcoma.
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Affiliation(s)
- Hiroshi Hirano
- Department of Diagnostic Pathology, Sanda City Hospital, Sanda, Hyogo, Japan Department of Pathology, Steel Memorial Hirohata Hospital, Hyogo, Japan
| | - Tomohiko Kizaki
- Department of Diagnostic Pathology, Sanda City Hospital, Sanda, Hyogo, Japan
| | - Takashi Ito
- Department of Diagnostic Pathology, Sanda City Hospital, Sanda, Hyogo, Japan
| | - Akira Okimura
- Department of Pathology, Steel Memorial Hirohata Hospital, Hyogo, Japan
| | - Koji Yamanegi
- Department of Pathology, Hyogo College of Medicine, Hyogo, Japan
| | - Keiji Nakasho
- Department of Pathology, Hyogo College of Medicine, Hyogo, Japan
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27
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Umbreit C, Flanjak J, Weiss C, Erben P, Aderhold C, Faber A, Stern-Straeter J, Hoermann K, Schultz JD. Incomplete epithelial-mesenchymal transition in p16-positive squamous cell carcinoma cells correlates with β-catenin expression. Anticancer Res 2014; 34:7061-7069. [PMID: 25503133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND The epithelial-mesenchymal transition (EMT) is suggested to be a crucial factor for the development of an invasive and metastatic cell phenotype, which is characterized by down-regulation of epithelial adhesive proteins (e.g. E-cadherin) and induction of mesenchymal proteins (e.g. vimentin). Therefore, there is a great clinical interest to specify this phenotype. Different growth factors induce EMT, such as epithelial growth factor (EGF) and transforming growth factor beta 1 (TGFβ1). The role of EMT in human papilloma virus (HPV)-positive squamous cell carcinoma (SCC) is still not understood. The aim of this study was to investigate the expression pattern in p16-positive and -negative SCC cells of vimentin, β-catenin and E-cadherin after stimulation with growth factors. MATERIALS AND METHODS We incubated the p16-positive CERV196 and p16-negative HNSCC22B SCC cell lines with EGF and EGF/TGFβ1 (10 ng/ml) and detected E-cadherin, vimentin and β-catenin by immunocytochemistry and enzyme-linked immunosorbent assay after 5, 24 and 96 h. RESULTS We found a low expression of vimentin in all studied tumor cell lines. The negative control of HNSCC22B cells showed a higher intrinsic level of membranous E-cadherin and β-catenin. We found statistically significant EGF/TGFβ1-induced expression of vimentin dependent on incubation time in p16-negative HNSCC22B cells. Particularly in the presence of EGF, we detected an increase of β-catenin and vimentin expression in p16-positive SCC tumor cell lines in addition to induced cell scattering and unexpected expression of E-cadherin. CONCLUSION In conclusion, E-cadherin, β-catenin and vimentin expression are important features to characterize EMT-like events. We were able to show incomplete EGF-induced EMT with β-catenin expression in p16-positive SCC. Extended studies are required to investigate the mechanistic role of EMT markers, especially in p16-positive SCC, in order to develop new anti-SCC therapies to block EMT progression.
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Affiliation(s)
- Claudia Umbreit
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Julia Flanjak
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Christel Weiss
- Institute of Medical Statistics and Biometry, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Philipp Erben
- Department of Urology, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Christoph Aderhold
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Anne Faber
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Jens Stern-Straeter
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Karl Hoermann
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Johannes David Schultz
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Centre Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
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Zhong LY, Zhu YF, Xu H, Gao ZB, Li M, Li Y. [The effects of equol on enzymes related to testosterone synthesis and vimentin in the testis of perinatal mice by organ culture in vitro]. Sichuan Da Xue Xue Bao Yi Xue Ban 2014; 45:883-887. [PMID: 25571708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To investigate the effects of Equol on genes and protein expression of testosterone synthesis related enzymes and Vimentin in testis of perinatal mice in vitro. METHODS Testes were isolated and cultured in infiltrating type rotating device for 72 h. The testes were randomly divided into five groups and treated with Equol (DMSO control, 0.01, 0.10, 1.00, 10.00 μmol/L Equol). Morphological changes were observed by HE staining under optical microscope. Expressions of 3β-hydroxysteroid dehydrogenase (3β-HSD),P450 side-chain cleavage enzyme (P450scc), Vimentin were detected by real-time PCR and immunohistochemistry. RESULTS No apparent morphological change in testes was observed compared to control group. The mRNA expression of 3β HSD, P450Scc, Vimentin show no statistical significance(P> 0. 05) in all Equol group, while the protein expressions of 3β-HSD, Vimentin, P450scc increased in 0. 10 μmol/L and decreased in 10.00 μmol/L Equol group. CONCLUSION Equol exposure can affect 3β-HSD, P450Scc, Vimentin expression in testes in vitro, means Equol may have potential adverse effects on testosterone production and spermatogenesis.
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Affiliation(s)
- Ling-yu Zhong
- Department of Nutrition and Food Hygiene, Sichuan University, Chengdu, China
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29
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Sano M, Homma T, Hayashi E, Noda H, Amano Y, Tsujimura R, Yamada T, Quattrochi B, Nemoto N. Clinicopathological characteristics of anaplastic carcinoma of the pancreas with rhabdoid features. Virchows Arch 2014; 465:531-8. [PMID: 25031015 DOI: 10.1007/s00428-014-1631-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 06/18/2014] [Accepted: 07/07/2014] [Indexed: 12/20/2022]
Abstract
Undifferentiated (anaplastic) carcinoma with rhabdoid features is a rare and aggressive subtype of pancreatic carcinoma. Here, we report the clinical, histological, and immunohistochemical phenotypes in six autopsy cases of anaplastic carcinoma with rhabdoid features. The patients ranged between 44 and 76 years of age (median, 61 years) and consisted of four males and two females. All patients except one case died within 3 months of diagnosis, as these tumors were found at an advanced stage and were chemoresistant. At autopsy, tumor masses measuring 4-22 cm in maximum diameter were mainly located in the pancreatic body and tail. Microscopically, all cases showed anaplastic carcinoma with rhabdoid features that were discohesive with round to polygonal eosinophilic cytoplasm with occasional inclusions, and that had vesicular nuclei, and prominent nucleoli. Immunohistochemistry showed that the rhabdoid cells, particularly the inclusions, were strongly positive for pan-cytokeratin (AE1/AE3) and vimentin. Meanwhile, downregulation or aberrant cytoplasmic localization with focal aggregation of E-cadherin, β-catenin, and EMA were frequently observed in the rhabdoid cells. Moreover, the intracytoplasmic inclusions were labeled with selective autophagy-related molecules including p62/SQSTM1, ubiquitin, and kelch-like ECH-associated protein 1 (KEAP1). In addition, nuclear factor erythroid 2-related factor 2 (NRF2) and overexpression of its target molecule multidrug resistance-associated protein 1 (MRP1) were commonly observed in the rhabdoid cells. Therefore, these results suggest that p62-mediated aggregation of ubiquitinated intermediate filaments and membranous proteins is an important phenomenon in the rhabdoid phenotype. Indeed, the ubiquitinated aggregates of p62 and KEAP1 would induce activation of NRF2 and upregulation of MRP1, leading to potential chemoresistance of anaplastic carcinoma with rhabdoid features.
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Affiliation(s)
- Makoto Sano
- Division of Pathology, Department of Pathology and Microbiology, Nihon University School of Medicine, 30-1 Oyaguchi-Kamimachi, Itabashi-ku, Tokyo, 173-8610, Japan,
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30
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Liu J, Zeng L, Zhao Y, Zhu B, Ren W, Wu C. Selenium suppresses lipopolysaccharide-induced fibrosis in peritoneal mesothelial cells through inhibition of epithelial-to-mesenchymal transition. Biol Trace Elem Res 2014; 161:202-9. [PMID: 25108639 DOI: 10.1007/s12011-014-0091-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 07/22/2014] [Indexed: 01/12/2023]
Abstract
Peritoneal fibrosis resulting from long-term clinical peritoneal dialysis has been the main reason of dropout from peritoneal dialysis. Peritonitis as a common complication of peritoneal dialysis treatment may lead to the occurrences of peritoneal fibrosis. We cultured peritoneal mesothelial cells with lipopolysaccharides (LPS) in order to stimulate the environment of peritonitis and investigate whether lipopolysaccharides could induce epithelial-to-mesenchymal transition (EMT). Oxidative stress could stimulate fibrogenesis while selenium has antioxidant properties. So, this study also explored whether selenium supplementation affects lipopolysaccharide-induced EMT and fibrosis. We found that lipopolysaccharides could activate EMT changes such as the loss of E-cadherin and the increase of α-smooth muscle actin (α-SMA), collagen I, vimentin, and fibronectin (FN), while selenium inhibits EMT by modulating reactive oxygen species (ROS) generation and ROS/MMP-9 signaling pathways in peritoneal mesothelial cells. Moreover, it was revealed that selenium decreased the EMT events of peritoneal mesothelial cells via inhibition of PI3k/AKT pathways. In conclusion, these findings enable a better understanding of the mechanism of peritoneal fibrosis and explore a new idea for the prevention and treatment.
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Affiliation(s)
- Jinyan Liu
- Department of Nephrology, Jining No.1 People's Hospital, Jining, 272100, Shandong, People's Republic of China
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31
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Jin L, Huo Y, Zheng Z, Jiang X, Deng H, Chen Y, Lian Q, Ge R, Deng H. Down-regulation of Ras-related protein Rab 5C-dependent endocytosis and glycolysis in cisplatin-resistant ovarian cancer cell lines. Mol Cell Proteomics 2014; 13:3138-51. [PMID: 25096996 PMCID: PMC4223497 DOI: 10.1074/mcp.m113.033217] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 07/28/2014] [Indexed: 11/06/2022] Open
Abstract
Drug resistance poses a major challenge to ovarian cancer treatment. Understanding mechanisms of drug resistance is important for finding new therapeutic targets. In the present work, a cisplatin-resistant ovarian cancer cell line A2780-DR was established with a resistance index of 6.64. The cellular accumulation of cisplatin was significantly reduced in A2780-DR cells as compared with A2780 cells consistent with the general character of drug resistance. Quantitative proteomic analysis identified 340 differentially expressed proteins between A2780 and A2780-DR cells, which involve in diverse cellular processes, including metabolic process, cellular component biogenesis, cellular processes, and stress responses. Expression levels of Ras-related proteins Rab 5C and Rab 11B in A2780-DR cells were lower than those in A2780 cells as confirmed by real-time quantitative PCR and Western blotting. The short hairpin (sh)RNA-mediated knockdown of Rab 5C in A2780 cells resulted in markedly increased resistance to cisplatin whereas overexpression of Rab 5C in A2780-DR cells increases sensitivity to cisplatin, demonstrating that Rab 5C-dependent endocytosis plays an important role in cisplatin resistance. Our results also showed that expressions of glycolytic enzymes pyruvate kinase, glucose-6-phosphate isomerase, fructose-bisphosphate aldolase, lactate dehydrogenase, and phosphoglycerate kinase 1 were down-regulated in drug resistant cells, indicating drug resistance in ovarian cancer is directly associated with a decrease in glycolysis. Furthermore, it was found that glutathione reductase were up-regulated in A2780-DR, whereas vimentin, HSP90, and Annexin A1 and A2 were down-regulated. Taken together, our results suggest that drug resistance in ovarian cancer cell line A2780 is caused by multifactorial traits, including the down-regulation of Rab 5C-dependent endocytosis of cisplatin, glycolytic enzymes, and vimentin, and up-regulation of antioxidant proteins, suggesting Rab 5C is a potential target for treatment of drug-resistant ovarian cancer. This constitutes a further step toward a comprehensive understanding of drug resistance in ovarian cancer.
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Affiliation(s)
- Lixu Jin
- §The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yi Huo
- From the ‡School of Life Sciences, Tsinghua University, Beijing, China
| | | | - Xiaoyong Jiang
- From the ‡School of Life Sciences, Tsinghua University, Beijing, China
| | - Haiyun Deng
- §The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yuling Chen
- From the ‡School of Life Sciences, Tsinghua University, Beijing, China
| | - Qingquan Lian
- §The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Renshan Ge
- §The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Haiteng Deng
- From the ‡School of Life Sciences, Tsinghua University, Beijing, China;
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Suh SS, Yoo JY, Cui R, Kaur B, Huebner K, Lee TK, Aqeilan RI, Croce CM. FHIT suppresses epithelial-mesenchymal transition (EMT) and metastasis in lung cancer through modulation of microRNAs. PLoS Genet 2014; 10:e1004652. [PMID: 25340791 PMCID: PMC4207614 DOI: 10.1371/journal.pgen.1004652] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 08/04/2014] [Indexed: 01/02/2023] Open
Abstract
Metastasis is the principal cause of cancer death and occurs through multiple, complex processes that involve the concerted action of many genes. A number of studies have indicated that the Fragile Histidine Triad (FHIT) gene product, FHIT, functions as a tumor suppressor in a variety of common human cancers. Although there are suggestions of a role for FHIT loss in progression of various cancers, a role for such loss in metastasis has not been defined. Here, via in vivo and in vitro assays, we reveal that the enforced expression of FHIT significantly suppresses metastasis, accompanied by inhibition of the epithelial-mesenchymal transition (EMT), a process involved in metastasis through coordinate modulation of EMT-related genes. Specifically, miR-30c, a FHIT-upregulated microRNA, contributes to FHIT function in suppression of EMT and metastasis by directly targeting metastasis genes Metadherin (MTDH), High-mobility group AT—hook 2 (HMGA2), and the mesenchymal markers, Vimentin (VIM) and Fibronectin (FN1), in human lung cancer. Finally, we demonstrate that the expression pattern of FHIT and miR-30c is inversely correlated with that of MTDH and HMGA2 in normal tissue, non-metastatic and metastatic tumors, serving as a potential biomarker for metastasis in lung cancer. Although Fragile Histidine Triad (FHIT) is known as a potential tumor suppressor gene in terms of tumor initiation and progression, the role of FHIT in the metastatic process is not well characterized. Here it is shown that FHIT reduces the motility and invasiveness of lung cancer cells in vitro and ability to metastasize in vivo, at least partially through the miR-30c-mediated suppression of EMT, a critical process during tumor metastasis. This study provides new insights into the role of FHIT and a FHIT-activated miRNA, miR-30c, as crucial modulators in lung metastasis.
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Affiliation(s)
- Sung-Suk Suh
- Department of Molecular Virology, Immunology and Medical Genetics, and Comprehensive Cancer Center, Ohio State University, Columbus, Ohio, United States of America
- South Sea Environmental Research Division, Korea Institute of Ocean Science and Technology, Geoje, South Korea
| | - Ji Young Yoo
- Dardinger Laboratory for Neuro-oncology and Neurosciences, Department of Neurological Surgery, Comprehensive Cancer Center and The Ohio State University Medical Center, Columbus, Ohio, United States of America
| | - Ri Cui
- Department of Molecular Virology, Immunology and Medical Genetics, and Comprehensive Cancer Center, Ohio State University, Columbus, Ohio, United States of America
| | - Balveen Kaur
- Dardinger Laboratory for Neuro-oncology and Neurosciences, Department of Neurological Surgery, Comprehensive Cancer Center and The Ohio State University Medical Center, Columbus, Ohio, United States of America
| | - Kay Huebner
- Department of Molecular Virology, Immunology and Medical Genetics, and Comprehensive Cancer Center, Ohio State University, Columbus, Ohio, United States of America
| | - Taek-Kyun Lee
- South Sea Environmental Research Division, Korea Institute of Ocean Science and Technology, Geoje, South Korea
| | - Rami I. Aqeilan
- Department of Molecular Virology, Immunology and Medical Genetics, and Comprehensive Cancer Center, Ohio State University, Columbus, Ohio, United States of America
- The Lautenberg Center for General and Tumor Immunology, Department of Immunology and Cancer Research, IMRIC, Hebrew University-Hadassah Medical School, Jerusalem, Israel
| | - Carlo M. Croce
- Department of Molecular Virology, Immunology and Medical Genetics, and Comprehensive Cancer Center, Ohio State University, Columbus, Ohio, United States of America
- * E-mail:
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Winitthana T, Lawanprasert S, Chanvorachote P. Triclosan potentiates epithelial-to-mesenchymal transition in anoikis-resistant human lung cancer cells. PLoS One 2014; 9:e110851. [PMID: 25329306 PMCID: PMC4199721 DOI: 10.1371/journal.pone.0110851] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 09/24/2014] [Indexed: 12/18/2022] Open
Abstract
Alteration of cancer cell toward mesenchymal phenotype has been shown to potentiate tumor aggressiveness by increasing cancer cell metastasis. Herein, we report the effect of triclosan, a widely used antibacterial agent found in many daily products, in enhancing the epithelial-to-mesenchymal transition (EMT) in aggressive anoikis resistant human H460 lung cancer cells. EMT has been long known to increase abilities of the cells to increase migration, invasion, and survival in circulating system. The present study reveals that treatment of the cancer cells with triclosan at the physiologically related concentrations significantly increased the colony number of the cancer cells assessed by tumor formation assay. Also, the mesenchymal-like morphology and decrease in cell-to-cell adhesion were observed in triclosan-treated cells. Importantly, western blot analysis revealed that triclosan-treated cells exhibited decreased E-cadherin, while the levels of EMT markers, namely N-cadherin, vimentin, snail and slug were found to be significantly up-regulated. Furthermore, EMT induced by triclosan treatment was accompanied by the activation of focal adhesion kinase/ATP dependent tyrosine kinase (FAK/Akt) and Ras-related C3 botulinum toxin substrate 1 (Rac1), which enhanced the ability of the cells to migrate and invade. In conclusion, we demonstrated for the first time that triclosan may potentiate cancer cells survival in detached condition and motility via the process of EMT. As mentioned capabilities are required for success in metastasis, the present study provides the novel toxicological information and encourages the awareness of triclosan use in cancer patients.
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Affiliation(s)
- Thidarat Winitthana
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Somsong Lawanprasert
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Pithi Chanvorachote
- Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- Cell-Based Drug and Health Product Development Research Unit, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- * E-mail:
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Elliott GC, Gurtu R, McCollum C, Newman WG, Wang T. Foramen ovale closure is a process of endothelial-to-mesenchymal transition leading to fibrosis. PLoS One 2014; 9:e107175. [PMID: 25215881 PMCID: PMC4162597 DOI: 10.1371/journal.pone.0107175] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 08/08/2014] [Indexed: 11/18/2022] Open
Abstract
Patent foramen ovale (PFO) is an atrial septal deformity present in around 25% of the general population. PFO is associated with major causes of morbidity, including stroke and migraine. PFO appears to be heritable but genes involved in the closure of foramen ovale have not been identified. The aim of this study is to determine molecular pathways and genes that are responsible to the postnatal closure of the foramen ovale. Using Sprague-Dawley rat hearts as a model we analysed the dynamic histological changes and gene expressions at the foramen ovale region between embryonic day 20 and postnatal day 7. We observed a gradual loss of the endothelial marker PECAM1, an upregulation of the mesenchymal marker vimentin and α-smooth muscle actin, the elevation of the transcription factor Snail, and an increase of fibroblast activation protein (FAP) in the foramen ovale region as well as the deposition of collagen-rich connective tissues at the closed foramen ovale, suggesting endothelial-to-mesenchymal transition (EndMT) occurring during foramen ovale closure which leads to fibrosis. In addition, Notch1 and Notch3 receptors, Notch ligand Jagged1 and Notch effector HRT1 were highly expressed in the endocardium of the foramen ovale region during EndMT. Activation of Notch3 alone in an endothelial cell culture model was able to drive EndMT and transform endothelial cells to mesenchymal phenotype. Our data demonstrate for the first time that FO closure is a process of EndMT-mediated fibrosis, and Notch signalling is an important player participating in this process. Elucidation of the molecular mechanisms of the closure of foramen ovale informs the pathogenesis of PFO and may provide potential options for screening and prevention of PFO related conditions.
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Affiliation(s)
- Graeme C. Elliott
- Centre for Genomic Medicine, Institute of Human Development, Faculty of Medical and Human Sciences, The University of Manchester, Manchester, United Kingdom
| | - Rockesh Gurtu
- Academic Surgery Unit, Education and Research Centre, University Hospital of South Manchester, Manchester, United Kingdom
| | - Charles McCollum
- Academic Surgery Unit, Education and Research Centre, University Hospital of South Manchester, Manchester, United Kingdom
| | - William G. Newman
- Centre for Genomic Medicine, Institute of Human Development, Faculty of Medical and Human Sciences, The University of Manchester, Manchester, United Kingdom
- Centre for Genomic Medicine, Central Manchester University Hospitals NHS Foundation Trust, Manchester, United Kingdom
| | - Tao Wang
- Centre for Genomic Medicine, Institute of Human Development, Faculty of Medical and Human Sciences, The University of Manchester, Manchester, United Kingdom
- * E-mail:
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Saliutin RV, Palianytsia SS, Sirman VM, Panchenko LA, Komarova LS. [Transplantation of adipose tissue multipotent stromal cells in the treatment of chronic ischemia of the lower extremities]. Klin Khir 2014:42-44. [PMID: 25252413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The expediency of the stromal cells application, obtained from adipose tissue, was determined in a frame of preclinical investigations conduction, concerning experimental works on laboratory rats, in whom the extremity ischemia was simulated. Histologic and immunohistochemical changes were studied in muscular tissue after transplantation of multipotent stromal cells of own adipose tissue in patients, suffering ischemia of the lower extremity. Reduction of severity of the myofibrills ischemic damage, rapid activation of the muscles regenerative power, accurate stimulation of the angiogenesis processes in 3 mo after transplantation of the cells were demonstrated.
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Mato E, González C, Moral A, Pérez JI, Bell O, Lerma E, de Leiva A. ABCG2/BCRP gene expression is related to epithelial-mesenchymal transition inducer genes in a papillary thyroid carcinoma cell line (TPC-1). J Mol Endocrinol 2014; 52:289-300. [PMID: 24643400 DOI: 10.1530/jme-14-0051] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Tumor malignancy is associated with the epithelial-mesenchymal transition (EMT) process and resistance to chemotherapy. However, little is known about the relationship between the EMT and the multidrug-resistance gene in thyroid tumor progression. We investigated whether the expression of the ABCG2/BCRP gene is associated with ZEB1 and other EMT inducer genes involved in tumor dedifferentiation. We established a subpopulation of cells that express the ABCG2/BCRP gene derived from the thyroid papillary carcinoma cell line (TPC-1), the so-called TPC-1 MITO-resistant subline. The most relevant findings in these TPC-1 selected cells were a statistically significant upregulation of ZEB1 and TWIST1 (35- and 15-fold change respectively), no changes in the relative expression of vimentin and SNAIL1, and no expression of E-cadherin. The TPC-1 MITO-resistant subline displayed a faster migration and greater invasive ability than parental cells in correlation with a significant upregulation of the survivin (BIRC5) gene (twofold change, P<0.05). The knockdown of ZEB1 promoted nuclear re-expression of E-cadherin, reduced expression of vimentin, N-cadherin, and BIRC5 genes, and reduced cell migration (P<0.05). Analysis of human thyroid carcinoma showed a slight overexpression of the ABCG2/BCRP at stages I and II (P<0.01), and a higher overexpression at stages III and IV (P<0.01). SNAIL1, TWIST1, and ZEB1 genes showed higher expression at stages III and IV than at stages I and II. E- and N-cadherin genes were upregulated at stages I and II of the disease (ninefold and tenfold change, respectively, P<0.01) but downregulated at stages III and IV (fourfold lower, P<0.01). These results could be a promising starting point for further study of the role of the ABCG2/BCRP gene in the progression of thyroid tumor.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily G, Member 2
- ATP-Binding Cassette Transporters/biosynthesis
- Adult
- Aged
- Aged, 80 and over
- Cadherins/biosynthesis
- Carcinoma/genetics
- Carcinoma/pathology
- Carcinoma, Papillary
- Cell Line, Tumor
- Cell Movement/genetics
- Drug Resistance, Multiple/genetics
- Drug Resistance, Neoplasm/genetics
- Epithelial-Mesenchymal Transition/genetics
- Female
- Gene Expression
- Gene Expression Regulation, Neoplastic
- Homeodomain Proteins/biosynthesis
- Homeodomain Proteins/genetics
- Humans
- Inhibitor of Apoptosis Proteins/biosynthesis
- Male
- Middle Aged
- Neoplasm Invasiveness/genetics
- Neoplasm Proteins/biosynthesis
- Neoplasm Staging
- Nuclear Proteins/biosynthesis
- RNA Interference
- RNA, Small Interfering
- Snail Family Transcription Factors
- Survivin
- Thyroid Cancer, Papillary
- Thyroid Gland/pathology
- Thyroid Neoplasms/genetics
- Thyroid Neoplasms/pathology
- Transcription Factors/biosynthesis
- Transcription Factors/genetics
- Twist-Related Protein 1/biosynthesis
- Up-Regulation
- Vimentin/biosynthesis
- Young Adult
- Zinc Finger E-box-Binding Homeobox 1
- Zinc Fingers/genetics
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Affiliation(s)
- E Mato
- Thyroid Neoplasia Study Group, EDUAB-HSP, Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) Departament de Biologia Cel-lular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Spain Departments of Endocrinology and Nutrition General Surgery Pathology IIB, Hospital de la Santa Creu i Sant Pau- Universitat Autònoma de Barcelona, Barcelona, Spain
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Gorelov AI, Narimanian ZN, Gorelov DS. [Prognostic value of ki-67 and vimentin markers in patients with metastatic kidney cancer]. Urologiia 2014:54-58. [PMID: 25211928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The study was aimed to determine the role of ki- 67 and vimentin markers in choosing the tactics of surgical treatment of patients with metastatic kidney cancer. The analysis of the results of treatment of 71 patients with metastatic renal cell carcinoma was performed. The first group included 16 (22.5%) patients, who underwent complete removal of distant metastases after nephrectomy. The second group consisted of 55 (77.5 %) patients who underwent cytoreductive nephrectomy only. Immunohistochemical analyses of tissues removed were performed in all patients for the evaluation of ki-67 and vimentin expression levels. When comparing the outcomes of patients after complete removal of metastases depending on the vimentin and ki-67 expression levels (< 10% and > 10%), a significant increase in the cumulative survival in the case of absence of vimentin and ki-67 expression of <10 % (log - rank test, P = 0.0001) was revealed. The same pattern was noted in the group of patients who underwent nephrectomy only. In the absence of expression of vimentin and ki-67 < 10%, survival rate in patients who underwent metastasectomy after nephrectomy was significantly higher compared with patients who underwent nephrectomy only (P = 0.001). In the case of positive expression of vimentin and ki-67 > 10%, differences in survival rate in these groups were not observed (P > 0.082). Thus, an association between the vimentin and ki-67 expression levels and the degree of spread of metastatic renal cell carcinoma was identified: the high level of expression of these markers precludes the increase of life expectancy of patients after removal of all metastases.
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Li C, Ma H, Wang Y, Cao Z, Graves-Deal R, Powell AE, Starchenko A, Ayers GD, Washington MK, Kamath V, Desai K, Gerdes MJ, Solnica-Krezel L, Coffey RJ. Excess PLAC8 promotes an unconventional ERK2-dependent EMT in colon cancer. J Clin Invest 2014; 124:2172-87. [PMID: 24691442 DOI: 10.1172/jci71103] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 01/30/2014] [Indexed: 01/30/2023] Open
Abstract
The epithelial-to-mesenchymal transition (EMT) transcriptional program is characterized by repression of E-cadherin (CDH1) and induction of N-cadherin (CDH2), and mesenchymal genes like vimentin (VIM). Placenta-specific 8 (PLAC8) has been implicated in colon cancer; however, how PLAC8 contributes to disease is unknown, and endogenous PLAC8 protein has not been studied. We analyzed zebrafish and human tissues and found that endogenous PLAC8 localizes to the apical domain of differentiated intestinal epithelium. Colon cancer cells with elevated PLAC8 levels exhibited EMT features, including increased expression of VIM and zinc finger E-box binding homeobox 1 (ZEB1), aberrant cell motility, and increased invasiveness. In contrast to classical EMT, PLAC8 overexpression reduced cell surface CDH1 and upregulated P-cadherin (CDH3) without affecting CDH2 expression. PLAC8-induced EMT was linked to increased phosphorylated ERK2 (p-ERK2), and ERK2 knockdown restored cell surface CDH1 and suppressed CDH3, VIM, and ZEB1 upregulation. In vitro, PLAC8 directly bound and inactivated the ERK2 phosphatase DUSP6, thereby increasing p-ERK2. In a murine xenograft model, knockdown of endogenous PLAC8 in colon cancer cells resulted in smaller tumors, reduced local invasion, and decreased p-ERK2. Using MultiOmyx, a multiplex immunofluorescence-based methodology, we observed coexpression of cytosolic PLAC8, CDH3, and VIM at the leading edge of a human colorectal tumor, supporting a role for PLAC8 in cancer invasion in vivo.
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Abstract
BACKGROUND Canine mammary sarcomas (CMSs) are rarely diagnosed in female dogs, which explains the scarcity of immunohistochemical findings concerning those tumors. This paper presents the results of a retrospective study into CMSs and discusses the clinical features of the analyzed tumors, the expression of intermediate filaments CK, Vim, Des and α-SMA, and the expression of p63, Ki67, ERα, PR and p53 protein. RESULTS Four percent of all canine mammary tumors (CMTs) were classified as CMSs, and they represented 5.1% of malignant CMTs. The mean age at diagnosis was 11.1 ± 2.8 years. Large breed dogs were more frequently affected (38.7%). The majority of observed CMSs were fibrosarcomas (2.1%). All CMSs expressed vimentin, and higher levels of vimentin expression were noted in fibrosarcomas and osteosarcomas. Ki67 expression was significantly correlated with the grade of CMS. CONCLUSIONS Our results revealed that CMSs form a heterogeneous group, therefore, immunohistochemical examinations could support differential and final diagnosis. Although this study analyzed a limited number of samples, the reported results can expand our knowledge about CMSs. Further work is required in this field.
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Affiliation(s)
- Izabella Dolka
- Department of Pathology and Veterinary Diagnostics, Faculty of Veterinary Medicine, Warsaw University of Life Sciences-WULS, Nowoursynowska 159c, Warsaw 02-776, Poland
| | - Rafał Sapierzyński
- Department of Pathology and Veterinary Diagnostics, Faculty of Veterinary Medicine, Warsaw University of Life Sciences-WULS, Nowoursynowska 159c, Warsaw 02-776, Poland
| | - Magdalena Król
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences-WULS, Nowoursynowska 159c, Warsaw 02-776, Poland
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Nakashima Y, Yoshinaga K, Kitao H, Ando K, Kimura Y, Saeki H, Oki E, Morita M, Kakeji Y, Hirahashi M, Oda Y, Maehara Y. Podoplanin is expressed at the invasive front of esophageal squamous cell carcinomas and is involved in collective cell invasion. Cancer Sci 2013; 104:1718-25. [PMID: 24103048 PMCID: PMC7654258 DOI: 10.1111/cas.12286] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 09/03/2013] [Accepted: 09/09/2013] [Indexed: 12/19/2022] Open
Abstract
The expression of podoplanin is reportedly involved in collective cell invasion, which is independent from the epithelial-mesenchymal transition (EMT). We focused on the expression of podoplanin in esophageal squamous cell carcinomas (ESCC) and investigated the correlation of podoplanin and EMT-related markers, and evaluated its prognostic significance. Five ESCC cell lines were subjected to western blot analysis for podoplanin and EMT markers. The effects of podoplanin on EMT and carcinoma invasion were evaluated with wound healing assays, invasion assays and 3-D culture. Transfection of ectopic podoplanin into a podoplanin-negative ESCC cell line (TE-15) induced cell migration and invasive activity (P < 0.001 and P < 0.05, respectively) without downregulation of E-cadherin. In contrast, transfection of si-podoplanin RNA into a podoplanin-positive ESCC cell line (TE-13) reduced cell migration and invasive activity (P < 0.05). We reviewed 101 patients who had undergone esophagectomy for ESCC. Podoplanin expression was observed in 58 patients (57.4%), and positive expression was positively correlated with expression of E-cadherin (P < 0.01), deeper wall invasion (P < 0.01), venous invasion (P < 0.05) and poorer prognosis (P < 0.01). Multivariate Cox analysis revealed that expression of podoplanin was a significant and independent unfavorable predictor of survival (P < 0.05). These data suggest that podoplanin is significantly associated with and likely contributes to ESCC invasion in the absence of EMT.
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Affiliation(s)
- Yuichiro Nakashima
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Qian Y, Hong B, Shen L, Wu Z, Yao H, Zhang L. B7-H4 enhances oncogenicity and inhibits apoptosis in pancreatic cancer cells. Cell Tissue Res 2013; 353:139-51. [PMID: 23660627 DOI: 10.1007/s00441-013-1640-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2012] [Accepted: 04/16/2013] [Indexed: 02/06/2023]
Abstract
B7-H4 is expressed in a variety of tumor cells and functions as a negative regulator of T cells. However, clarification is needed as to whether B7-H4 mediates tumorigenesis through mechanisms, such as apoptosis, in addition to mediating tumor immune escape. We investigate the mechanisms involved in enhanced oncogenicity and the inhibition of apoptosis by B7-H4 in pancreatic cancer cells. Short interfering RNAs (siRNAs) specific for B7-H4 were evaluated for their ability to knockdown B7-H4 mRNA and protein expression in pancreatic cancer cells and the most effective siRNA was selected for investigating the effect of B7-H4 gene silencing in a number of functional assays. The inhibition of B7-H4 increased cell-cell adhesion and decreased the formation of pseudopodia. It also increased the expression of E-cadherin and decreased the expression of vimentin and CD44. B7-H4 siRNA inhibited cell proliferation, colony formation and migration of pancreatic cancer cells. Moreover, increased apoptosis in pancreatic cancer cells following B7-H4 silencing was demonstrated in vitro by using flow cytometry and in a xenograft tumor model and was associated with increased caspase activity and decreased Erk1/2 phosphorylation both in vitro and in vivo. Loss of B7-H4 function thus prevents tumor growth through many processes, including the induction of apoptosis and inhibition of the Erk1/2 signaling pathway indicating that B7-H4 is a cancer promoter and a potentially important therapeutic target. B7-H4 inhibition might offer an exciting opportunity to inhibit the progression of human pancreatic cancers.
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Affiliation(s)
- Yun Qian
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Institute of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Road, 310003, Hangzhou, China.
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Tahoun A, Mahajan S, Paxton E, Malterer G, Donaldson DS, Wang D, Tan A, Gillespie TL, O'Shea M, Roe AJ, Shaw DJ, Gally DL, Lengeling A, Mabbott NA, Haas J, Mahajan A. Salmonella transforms follicle-associated epithelial cells into M cells to promote intestinal invasion. Cell Host Microbe 2013; 12:645-56. [PMID: 23159054 DOI: 10.1016/j.chom.2012.10.009] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 07/25/2012] [Accepted: 10/02/2012] [Indexed: 12/16/2022]
Abstract
Salmonella Typhimurium specifically targets antigen-sampling microfold (M) cells to translocate across the gut epithelium. Although M cells represent a small proportion of the specialized follicular-associated epithelium (FAE) overlying mucosa-associated lymphoid tissues, their density increases during Salmonella infection, but the underlying molecular mechanism remains unclear. Using in vitro and in vivo infection models, we demonstrate that the S. Typhimurium type III effector protein SopB induces an epithelial-mesenchymal transition (EMT) of FAE enterocytes into M cells. This cellular transdifferentiation is a result of SopB-dependent activation of Wnt/β-catenin signaling leading to induction of both receptor activator of NF-κB ligand (RANKL) and its receptor RANK. The autocrine activation of RelB-expressing FAE enterocytes by RANKL/RANK induces the EMT-regulating transcription factor Slug that marks epithelial transdifferentiation into M cells. Thus, via the activity of a single secreted effector, S. Typhimurium transforms primed epithelial cells into M cells to promote host colonization and invasion.
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Affiliation(s)
- Amin Tahoun
- The Roslin Institute and Royal School of Veterinary Studies, University of Edinburgh, Edinburgh EH25 9RG, UK
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Herwig A, de Vries EM, Bolborea M, Wilson D, Mercer JG, Ebling FJP, Morgan PJ, Barrett P. Hypothalamic ventricular ependymal thyroid hormone deiodinases are an important element of circannual timing in the Siberian hamster (Phodopus sungorus). PLoS One 2013; 8:e62003. [PMID: 23637944 PMCID: PMC3630139 DOI: 10.1371/journal.pone.0062003] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 03/15/2013] [Indexed: 01/11/2023] Open
Abstract
Exposure to short days (SD) induces profound changes in the physiology and behaviour of Siberian hamsters, including gonadal regression and up to 30% loss in body weight. In a continuous SD environment after approximately 20 weeks, Siberian hamsters spontaneously revert to a long day (LD) phenotype, a phenomenon referred to as the photorefractory response. Previously we have identified a number of genes that are regulated by short photoperiod in the neuropil and ventricular ependymal (VE) cells of the hypothalamus, although their importance and contribution to photoperiod induced physiology is unclear. In this refractory model we hypothesised that the return to LD physiology involves reversal of SD expression levels of key hypothalamic genes to their LD values and thereby implicate genes required for LD physiology. Male Siberian hamsters were kept in either LD or SD for up to 39 weeks during which time SD hamster body weight decreased before increasing, after more than 20 weeks, back to LD values. Brain tissue was collected between 14 and 39 weeks for in situ hybridization to determine hypothalamic gene expression. In VE cells lining the third ventricle, expression of nestin, vimentin, Crbp1 and Gpr50 were down-regulated at 18 weeks in SD photoperiod, but expression was not restored to the LD level in photorefractory hamsters. Dio2, Mct8 and Tsh-r expression were altered by SD photoperiod and were fully restored, or even exceeded values found in LD hamsters in the refractory state. In hypothalamic nuclei, expression of Srif and Mc3r mRNAs was altered at 18 weeks in SD, but were similar to LD expression values in photorefractory hamsters. We conclude that in refractory hamsters not all VE cell functions are required to establish LD physiology. However, thyroid hormone signalling from ependymal cells and reversal of neuronal gene expression appear to be essential for the SD refractory response.
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Affiliation(s)
- Annika Herwig
- Rowett Institute for Nutrition and Health, University of Aberdeen, Bucksburn, Aberdeen, United Kingdom
| | - Emmely M. de Vries
- Rowett Institute for Nutrition and Health, University of Aberdeen, Bucksburn, Aberdeen, United Kingdom
| | - Matei Bolborea
- Rowett Institute for Nutrition and Health, University of Aberdeen, Bucksburn, Aberdeen, United Kingdom
- School of Biomedical Sciences, University of Nottingham Medical School, Queen Medical Centre, Nottingham, United Kingdom
| | - Dana Wilson
- Rowett Institute for Nutrition and Health, University of Aberdeen, Bucksburn, Aberdeen, United Kingdom
| | - Julian G. Mercer
- Rowett Institute for Nutrition and Health, University of Aberdeen, Bucksburn, Aberdeen, United Kingdom
| | - Francis J. P. Ebling
- School of Biomedical Sciences, University of Nottingham Medical School, Queen Medical Centre, Nottingham, United Kingdom
| | - Peter J. Morgan
- Rowett Institute for Nutrition and Health, University of Aberdeen, Bucksburn, Aberdeen, United Kingdom
| | - Perry Barrett
- Rowett Institute for Nutrition and Health, University of Aberdeen, Bucksburn, Aberdeen, United Kingdom
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44
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Dai Y, Chen J, Li H, Li S, Chen J, Ding Y, Wu J, Wang C, Tan M. Characterizing the effects of VPA, VC and RCCS on rabbit keratocytes onto decellularized bovine cornea. PLoS One 2012; 7:e50114. [PMID: 23209652 PMCID: PMC3510233 DOI: 10.1371/journal.pone.0050114] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 10/16/2012] [Indexed: 11/19/2022] Open
Abstract
To investigate the morphological and growth characteristics of rabbit keratocytes when cultured on decellularized cornea under simulate microgravity (SMG) rotary cell culture system (RCCS) and static culture or in plastic culture supplemented with small molecules of valproic acid (VPA) and vitamin C (VC). Bovine corneas were firstly decellularized with Triton X-100 and NH(4)OH and through short-term freezing process. Then cell count kit-8 (CCK-8) and flow cytometry were used to test the effects of VPA and VC on the proliferation, cell cycle and apoptosis of rabbit keratocytes. Hematoxylin-eosin (H&E) staining and scanning electron microscopy (SEM) imaging showed that cells were eliminated in the decellularized bovine corneas. The proliferation of cultured keratocytes was promoted by VPA and VC in the cell proliferation assay. VPA and VC moderately decreased the number of apoptotic cells and obviously promoted cell-cycle entrance of keratocytes. Rabbit keratocytes in plastic displayed spindle shape and rare interconnected with or without VPA and VC. Cells revealed dendritic morphology and reticular cellular connections when cultured on the carriers of decellularized corneas supplemented with VPA and VC even in the presence of 10% fetal bovine serum (FBS). When cultured in RCCS supplemented with VPA, VC and 10% FBS, keratocytes displayed round shape with many prominences and were more prone to grow into the pores of carriers with aggregation. Reverse transcription-polymerase chain reaction (RT-PCR) analysis proved that the keratocytes cultured on decellularized bovine cornea under SMG with VPA and VC expressed keratocan and lumican. Keratocytes cultured on plastic expressed lumican but not keratocan. Immunofluorescence identification revealed that cells in all groups were positively immunostained for vimentin. Keratocytes on decellularized bovine cornea under SMG or in static culture were positively immunostained for keratocan and lumican. Thus, we reasonably made a conclusion that the combination of VPA, VC, RCCS and decellularized corneal carriers provide a good condition for keratocytes to well grow. Keratocytes can be manipulated to be aggregates or physiological morphological growth in vitro, which are important for the research of corneal stem cells and corneal tissue engineering.
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Affiliation(s)
- Ying Dai
- Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, People's Republic of China
| | - Jiansu Chen
- Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, People's Republic of China
- Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, People's Republic of China
| | - Hongyang Li
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Guangzhou, People's Republic of China
| | - Shanyi Li
- Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, People's Republic of China
| | - Jian Chen
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Guangzhou, People's Republic of China
| | - Yong Ding
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Guangzhou, People's Republic of China
| | - Jing Wu
- Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, People's Republic of China
| | - Chan Wang
- Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, People's Republic of China
| | - Meihua Tan
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Guangzhou, People's Republic of China
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45
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Brignole-Baudouin F, Desbenoit N, Hamm G, Liang H, Both JP, Brunelle A, Fournier I, Guerineau V, Legouffe R, Stauber J, Touboul D, Wisztorski M, Salzet M, Laprevote O, Baudouin C. A new safety concern for glaucoma treatment demonstrated by mass spectrometry imaging of benzalkonium chloride distribution in the eye, an experimental study in rabbits. PLoS One 2012; 7:e50180. [PMID: 23209668 PMCID: PMC3507684 DOI: 10.1371/journal.pone.0050180] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 10/22/2012] [Indexed: 11/18/2022] Open
Abstract
We investigated in a rabbit model, the eye distribution of topically instilled benzalkonium_(BAK) chloride a commonly used preservative in eye drops using mass spectrometry imaging. Three groups of three New Zealand rabbits each were used: a control one without instillation, one receiving 0.01%BAK twice a day for 5 months and one with 0.2%BAK one drop a day for 1 month. After sacrifice, eyes were embedded and frozen in tragacanth gum. Serial cryosections were alternately deposited on glass slides for histological (hematoxylin-eosin staining) and immunohistological controls (CD45, RLA-DR and vimentin for inflammatory cell infiltration as well as vimentin for Müller glial cell activation) and ITO or stainless steel plates for MSI experiments using Matrix-assisted laser desorption ionization time-of-flight. The MSI results were confirmed by a round-robin study on several adjacent sections conducted in two different laboratories using different sample preparation methods, mass spectrometers and data analysis softwares. BAK was shown to penetrate healthy eyes even after a short duration and was not only detected on the ocular surface structures, but also in deeper tissues, especially in sensitive areas involved in glaucoma pathophysiology, such as the trabecular meshwork and the optic nerve areas, as confirmed by images with histological stainings. CD45-, RLA-DR- and vimentin-positive cells increased in treated eyes. Vimentin was found only in the inner layer of retina in normal eyes and increased in all retinal layers in treated eyes, confirming an activation response to a cell stress. This ocular toxicological study confirms the presence of BAK preservative in ocular surface structures as well as in deeper structures involved in glaucoma disease. The inflammatory cell infiltration and Müller glial cell activation confirmed the deleterious effect of BAK. Although these results were obtained in animals, they highlight the importance of the safety-first principle for the treatment of glaucoma patients.
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Yoshida K, Saito T, Kamida A, Matsumoto K, Saeki K, Mochizuki M, Sasaki N, Nakagawa T. Transforming growth factor-β transiently induces vimentin expression and invasive capacity in a canine mammary gland tumor cell line. Res Vet Sci 2012. [PMID: 23182613 DOI: 10.1016/j.rvsc.2012.10.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The epithelial-mesenchymal transition (EMT) is a crucial event that occurs during cancer metastasis and can be induced by transforming growth factor-β (TGF-β) in various tumor cells in vitro. However, little is known about the effects of TGF-β in canine mammary gland tumors (CMGTs). Here, we investigated the role of TGF-β in CMGT. We observed that treatment of the CMGT cell line CHMp13a with TGF-β1 leads to transient induction of the mesenchymal marker vimentin. Real-time measurements of cellular electrical impedance also showed that CMGT invasiveness is transiently increased by TGF-β1 treatment, but is reversed after prolonged stimulation. This phenomenon is similar to the mesenchymal-epithelial transition (MET, the reverse phenomenon of EMT), and a process that is implicated in the establishment of secondary metastatic lesions.
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Affiliation(s)
- K Yoshida
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
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47
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Siu A, Lee C, Pham E, Ramos DM. Revisiting epithelial-to-mesenchymal transition through adenoid cystic carcinoma. Anticancer Res 2012; 32:3683-3688. [PMID: 22993306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Adenoid cystic carcinoma (ACC) has a 5-year survival rate of 90%. The 15-year survival rate drops to 10% due to recurrence and invasion. ACC has three subtypes: cribriform, tubular, and solid. The cribriform subtype has the best prognosis and the solid subtype has the worst prognosis. By immunohistochemistry of tissue sections, we showed that the solid form expresses αvβ6 integrin and tenascin-C, which are known promoters of epithelial-to-mesenchymal transition (EMT). We also defined two ACC cell lines with the characteristics of the cribriform and solid subtype. The SACC83 cells grow in basaloid-like clusters and express high levels of E-cadherin. In contrast, the ACCh cells are more myoepithelial-like and express high levels of vimentin and of αvβ6 integrin. The ACCh cells are highly invasive and this behavior is dependent upon the αvβ6 integrin function. Our results suggest that the transition from the cribriform to solid form may occur through EMT.
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Affiliation(s)
- Amanda Siu
- Department of Orofacial Sciences, University of California at San Francisco, San Francisco, CA 94143-0422, USA
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Christophe-Hobertus C, Lefort A, Libert F, Christophe D. Functional inactivation of thyroid transcription factor-1 in PCCl3 thyroid cells. Mol Cell Endocrinol 2012; 358:36-45. [PMID: 22370158 DOI: 10.1016/j.mce.2012.02.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 02/10/2012] [Accepted: 02/10/2012] [Indexed: 01/07/2023]
Abstract
Thyroid transcription factor-1 (TTF-1) is a key regulator of thyroid development and function. In order to identify the genes whose expression depends on TTF-1 transcriptional activity within the thyrocyte we analyzed the consequence of the functional inactivation of this factor in PCCl3 cells. The expression of a fusion protein composed of the DNA binding domain of TTF-1 and of the strong repressive domain of the engrailed protein resulted in a dramatic loss of epithelial cell morphology and in proliferation arrest. These changes were reversed when the inhibition of endogenous TTF-1 was relieved. No change was observed when a similar fusion protein containing point mutations abolishing DNA binding activity was produced in the cells. Besides the expected down-regulation of expression of the main genes linked to the differentiated thyroid function, we observed a decreased expression of the transcription factors Hhex, Pax 8 and TTF-2 and of E-cadherin. By contrast, both ThOX-1 and DUOXA-1 genes were up-regulated, as well as the ones encoding vimentin and several proteins involved in cell cycle arrest. Our data thus extend the known roles of TTF-1 in thyroid development and in the expression of differentiated function in the adult organ to the control of epithelial morphology and of cell division in mature thyrocytes.
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Affiliation(s)
- Christiane Christophe-Hobertus
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire, Université Libre de Bruxelles, IBMM, Biopark Charleroi Brussels South, B-6041 Gosselies, Belgium
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Kanakkanthara A, Rawson P, Northcote PT, Miller JH. Acquired resistance to peloruside A and laulimalide is associated with downregulation of vimentin in human ovarian carcinoma cells. Pharm Res 2012; 29:3022-32. [PMID: 22584948 DOI: 10.1007/s11095-012-0773-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Accepted: 04/30/2012] [Indexed: 11/26/2022]
Abstract
PURPOSE Acquired β-tubulin alterations in human ovarian carcinoma 1A9 cells were previously shown to confer resistance to the microtubule stabilizing agents peloruside A (PLA) and laulimalide (LAU). We examined the proteome of resistant cells to see what other protein changes occurred as a result of the acquired drug resistance. METHODS Two-dimensional differential in-gel electrophoresis was performed to explore differentially expressed proteins in the resistant 1A9-R1 (R1) and 1A9-L4 (L4) cells. The proteins on the gels were identified by MALDI-TOF MS, and altered protein abundance was confirmed by Western blotting and immunocytochemistry. Vimentin expression was restored in vimentin-deficient L4 cells by transfecting a full-length human vimentin cDNA, and sensitivity to PLA and LAU were tested using an MTT cell proliferation assay. RESULTS Proteomic analysis identified several proteins that were significantly altered in the resistant cells relative to the parental 1A9 cells. Using Western blotting and immunocytochemistry, a decreased vimentin abundance in the L4 cells was validated. Vimentin levels were unchanged in PLA-resistant R1 cells and paclitaxel/epothilone-resistant derivatives of 1A9 cells. Vimentin cDNA transfection into L4 cells partially restored PLA and LAU sensitivity. CONCLUSIONS Downregulation of vimentin contributes to the resistance of 1A9 cells to the microtubule stabilizing agents, PLA and LAU.
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Affiliation(s)
- Arun Kanakkanthara
- Centre for Biodiscovery, Victoria University of Wellington, PO Box 600, Wellington, 6140, New Zealand
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Richardson F, Young GD, Sennello R, Wolf J, Argast GM, Mercado P, Davies A, Epstein DM, Wacker B. The evaluation of E-Cadherin and vimentin as biomarkers of clinical outcomes among patients with non-small cell lung cancer treated with erlotinib as second- or third-line therapy. Anticancer Res 2012; 32:537-552. [PMID: 22287743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
E-Cadherin and vimentin protein expression was assessed in late stage non-small cell lung cancer tumors from the placebo controlled clinical trial, NCIC-CTG BR.21, to determine if these markers had the potential to predict outcome of erlotinib therapy. E-Cadherin and vimentin protein expression levels were assessed in tumors from 95 patients, who were representative of the overall population, using semi-quantitative immunohistochemistry. The percentage of tumor cells with grades 0, 1, 2, or 3 membrane staining of E-cadherin and cytoplasmic staining of vimentin was measured. Three scoring methods and multiple cut-offs were explored to determine if these markers were able to divide patients into groups with different overall survival (OS). A cut-off point for E-cadherin of ≥40% tumor cells with staining of +2 and +3 and a cut-off for vimentin of ≥10% of tumors cell with any staining provided the optimal stratification. The OS hazard ratio (HR) for E-cadherin(+) versus E-cadherin(-) in the erlotinib-treated patients was 0.68 (0.35-1.33) compared with 1.48 (0.69-3.15) in the placebo patients and the OS (HR) for erlotinib versus placebo was 0.47 (0.26-0.88) in E-cadherin(+) patients compared with 1.12 (0.52-2.44) in the E-cadherin(-) patients. The OS (HR) for vimentin(+) versus vimentin(-) in the erlotinib-treated patients was 0.65 (0.31-1.38) compared to 2.32 (1.09-4.94) in the placebo-treated patients and the OS (HR) for erlotinib versus placebo was 0.26 (0.11-0.63) in vimentin(+) compared to 0.99 (0.55-1.76) in the vimentin(-) patients. Similar trends were observed for progression-free survival and response rate. E-Cadherin and vimentin are biomarkers worthy of additional study as predictive markers of outcome of erlotinib therapy.
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Affiliation(s)
- Frank Richardson
- OSI Pharmaceuticals LLC, 2860 Wilderness Place, Boulder, CO 80301, USA.
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