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Liu Y, Zhang X, Jiang T, Du N. Hypoxia-Induced Nestin Regulates Viability and Metabolism of Lung Cancer by Targeting Transcriptional Factor Nrf2, STAT3, and SOX2. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2022; 2022:9811905. [PMID: 36082356 PMCID: PMC9448566 DOI: 10.1155/2022/9811905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/13/2022] [Accepted: 08/16/2022] [Indexed: 11/29/2022]
Abstract
Objective To investigate hypoxia-induced Nestin regulates lung cancer viability and metabolism by targeting transcription factors Nrf2, STAT3, and SOX2. Methods Eighty-four cases of nonsmall cell lung cancer (nonsmall cell lung cancer, NSCLC), which had been treated from June 2020 to February 2021, were randomly selected from our clinicopathology database. Immunohistochemical staining of collected tissue cells was performed to assess the expression patterns of Nestin, STAT3, Nrf2, and SOX2. Data were quantified and statistically analyzed using one-way and two-way ANOVA tests with P < 0.05. Results Clinicopathological findings showed significant differences in lymph node metastasis, tissue differentiation, and histology on induction of Nestin expression; Nestin expression correlated with STAT3, Nrf2, and SOX2 expression.Nestin/STAT3/SOX2/Nrf2 are involved in angiogenesis and lung cancer development. Conclusion Hypoxia-induced Nestin promotes the progression of nonsmall lung cancer cells by targeting the downstream transcription factors STAT3, Nrf2, and SOX2.
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Affiliation(s)
- Yongshi Liu
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Xinglin Zhang
- Department of Oncology, Qingdao Municipal Hospital, Qingdao, Shandong, China
| | - Tao Jiang
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Ning Du
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
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Nestin-Expressing Cells in the Lung: The Bad and the Good Parts. Cells 2021; 10:cells10123413. [PMID: 34943921 PMCID: PMC8700449 DOI: 10.3390/cells10123413] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/25/2021] [Accepted: 12/01/2021] [Indexed: 12/27/2022] Open
Abstract
Nestin is a member of the intermediate filament family, which is expressed in a variety of stem or progenitor cells as well as in several types of malignancies. Nestin might be involved in tissue homeostasis or repair, but its expression has also been associated with processes that lead to a poor prognosis in various types of cancer. In this article, we review the literature related to the effect of nestin expression in the lung. According to most of the reports in the literature, nestin expression in lung cancer leads to an aggressive phenotype and resistance to chemotherapy as well as radiation treatments due to the upregulation of phenomena such as cell proliferation, angiogenesis, and metastasis. Furthermore, nestin may be involved in the pathogenesis of some non-cancer-related lung diseases. On the other hand, evidence also indicates that nestin-positive cells may have a role in lung homeostasis and be capable of generating various types of lung tissues. More research is necessary to establish the true value of nestin expression as a prognostic factor and therapeutic target in lung cancer in addition to its usefulness in therapeutic approaches for pulmonary diseases.
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Singh KN, Ramadas MN, Veeran V, Naidu MR, Dhanaraj TS, Chandrasekaran K. Expression Pattern of the Cancer Stem Cell Marker "Nestin" in Leukoplakia and Oral Squamous Cell Carcinoma. Rambam Maimonides Med J 2019; 10:RMMJ.10378. [PMID: 31675305 PMCID: PMC6824828 DOI: 10.5041/rmmj.10378] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE The aim of the present study was to determine and compare the expression pattern and localization of nestin, in an attempt to explore its role in oral carcinogenesis. METHODS Western blot and immunohistochemistry analysis were performed to study the expression pattern of nestin in normal mucosa, leukoplakia, and oral squamous cell carcinoma samples. Nestin expression was evaluated in the keratinocytes and blood vessels of all the samples and compared with various clinico-pathological parameters. RESULTS Nestin expression was increased in samples of leukoplakia and oral squamous cell carcinoma when compared with normal mucosa. Among leukoplakia samples, the expression was increased in cases without dysplasia compared to cases with dysplastic features. In cases of oral squamous cell carcinoma, the expression of nestin was found to be decreased with the loss of differentiation. Neoangiogenesis status determined by nestin expression showed an increasing expression from normal mucosa through leukoplakia, to oral squamous cell carcinoma. CONCLUSION This study has two major findings: (1) identification of nestin as an effective indicator of neoangiogenesis, and (2) nestin may be used as a marker in predicting the early changes in oral carcinogenesis.
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Scotti FM, Mitt VC, Vieira DS, Biz MT, Castro RG, Modolo F. Expression of stem cell markers Nanog and Nestin in lip squamous cell carcinoma and actinic cheilitis. Oral Dis 2018; 24:1209-1216. [PMID: 29761881 DOI: 10.1111/odi.12891] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/17/2018] [Accepted: 05/03/2018] [Indexed: 12/19/2022]
Abstract
Cancer stem cell (CSC) proteins have been observed in several lesions and are associated with tumor beginning, evolution, and resistance to treatment. OBJECTIVES To investigate the presence of NANOG, NESTIN, and β-tubulin in lip squamous cell carcinoma (LSCC), actinic cheilitis (AC), and normal epithelium (NE). MATERIALS AND METHODS Thirty cases of LSCC, thirty cases of AC (both analyzed according to the WHO classification and AC according to the binary classification), and twenty cases of NE were submitted to an immunohistochemical study. RESULTS NANOG was more expressed in the nuclei of AC compared to NE (p = 0.007), as well as in high-risk AC cases (p = 0.017) and well-differentiated LSCCs (no significance). There was an accumulation of nuclear NANOG from mild to moderate and severe ACs. NESTIN was significantly less present in NE compared to AC (p = 0.001) and LSCC (p = 0.003). There was a higher expression in severe dysplasia or high-risk AC and well-differentiated LSCC. These results indicate an upregulation of NANOG and NESTIN in the early stages of carcinogenesis. β-tubulin was intensely present in all lesions. CONCLUSION The results suggest an upregulation of NANOG and NESTIN in the biological behavior these diseases, mainly in the transformation from AC to LSCC.
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Affiliation(s)
- Fernanda M Scotti
- Dentistry Graduate Program, Federal University of Santa Catarina, Florianopolis, Brazil
| | - Verônica C Mitt
- Multidisciplinary Residence Program, Federal University of Santa Catarina, Florianopolis, Brazil
| | - Daniella Sc Vieira
- Pathology Department, Federal University of Santa Catarina, Florianopolis, Brazil
| | - Michelle T Biz
- Morphology Sciences Department, Federal University of Santa Catarina, Florianopolis, Brazil
| | - Renata G Castro
- Dentistry Department, Federal University of Santa Catarina, Florianopolis, Brazil
| | - Filipe Modolo
- Dentistry Graduate Program, Federal University of Santa Catarina, Florianopolis, Brazil.,Pathology Department, Federal University of Santa Catarina, Florianopolis, Brazil
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Association of SOX2 and Nestin DNA amplification and protein expression with clinical features and overall survival in non-small cell lung cancer: A systematic review and meta-analysis. Oncotarget 2018; 7:34520-31. [PMID: 27150062 PMCID: PMC5085173 DOI: 10.18632/oncotarget.9145] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 04/16/2016] [Indexed: 01/10/2023] Open
Abstract
Up to now, the prognosis of non-small cell lung cancer (NSCLC) is poor. With progress of cancer biology, a number of genes have been investigated for predicting prognosis of NSCLC, such as cancer stem cell markers SRY (sex determining region Y)-box 2 (SOX2) and Nestin. Recently, a series of studies have been performed to examine the associations of SOX2 and Nestin with clinical parameters and prognosis in NSCLC, however, the results were not consistent. In the present study, we conducted a systematic review and meta-analysis to summarize the associations. Four English databases (PubMed, ISI web of science, Embase, and Ovid) were used to search the relevant studies with the last date of November 10, 2015. The pooling analyses were stratified by DNA amplification and protein expression. The pooling ORs or HRs were used to assess the strength of the associations. Finally, we included 19 articles for SOX2 and six articles for Nestin according to the inclusion and exclusion criteria. The pooling analyses revealed that there were significant associations between SOX2 DNA amplification and clinical features of NSCLC, gender, smoking status, squamous cell cancer (SCC) histology, and differentiations. And significant associations were also identified between SOX2 protein expression and clinical parameters, smoking status and SCC histology. For Nestin, its protein expression was correlated with lymph node metastasis and stage. Simultaneously, we found that high/positive SOX2 alterations, either DNA amplification or protein expression, were favorable for overall survival (OS) in NSCLC. On the contrary, high/positive Nestin protein expression was poor for OS.
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6
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Gordon RE, Zhang L, Yang ZJ. Restore the brake on tumor progression. Biochem Pharmacol 2017; 138:1-6. [PMID: 28389227 DOI: 10.1016/j.bcp.2017.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 04/03/2017] [Indexed: 11/19/2022]
Abstract
Sonic hedgehog (Shh) signaling plays a key role in regulation of normal development. The negative feedback mechanism mediated by the transcriptional factor, Gli3, acts to finely tune Shh signaling, providing tight control of normal developmental processes. Hyperactivation of Shh signaling often leads to many human malignancies, including basal cell carcinoma and medulloblastoma (MB). However, how tumor cells sustain the aberrant activation of Shh signaling is still not completely understood. We recently revealed that during MB formation, tumor cells express Nestin, a type VI intermediate filament protein, which maintains uncontrolled Shh signaling by abolishing negative feedback by Gli3. Therefore, Nestin expression is a necessary step for MB formation. These findings highlight the novel function of Nestin in regulating Shh signaling, as well as the important role of a disrupted negative feedback mechanism in MB tumorigenesis. Further, restoration of the intrinsic negative feedback by repressing Nestin expression represents a promising approach to treat MB as well as other Shh signaling associated malignancies.
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Affiliation(s)
- Renata E Gordon
- Cancer Biology Program, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA 19111, USA
| | - Li Zhang
- Laboratory of Molecular Neuropathology, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Zeng-Jie Yang
- Cancer Biology Program, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA 19111, USA; Laboratory of Molecular Neuropathology, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China.
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7
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Zhong B, Wang T, Zou J, Zheng F, Huang R, Zheng X, Yang W, Chen Z. Association of the intermediate filament nestin with cancer stage: a meta-analysis based on 223 positive/high nestin cases and 460 negative/low case-free controls. Oncotarget 2016; 6:22970-7. [PMID: 26015397 PMCID: PMC4673213 DOI: 10.18632/oncotarget.4042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Accepted: 04/20/2015] [Indexed: 01/02/2023] Open
Abstract
Background Nestin, a member of the intermediate filament protein family, has been reported to be associated with several types of neoplastic transformation. However, questions remain, with studies reporting sometimes inconclusive or conflicting data. Thus, the aim of this study was to evaluate literature reports on the relationship between nestin and cancer stage. Methods Relevant articles published as of June 2014 were retrieved from multiple databases. After applying specific inclusion criteria, we chose seven articles relating to nestin expression and cancer stage, which included a total of 223 positive/high nestin cases and 460 negative/low case-free controls. Results Overall, positive/high nestin was significantly associated with median or advanced stages of several types of cancer (nestin and cancer stage: OR = 1.90, 95% CI = 1.30–2.78; nestin and lymph node: OR = 2.17, 95% CI = 1.26–3.72). Notably, studies relating to lung cancer (three qualifying articles) showed a significant association between nestin and lung cancer stage (OR = 2.00, 95% CI = 1.16–3.44). Conclusion These findings indicate that positive/high nestin may be more strongly linked to median or advanced cancer stage and correlated with malignant characteristics that lead to poor prognosis in different cancers, especially lung cancer.
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Affiliation(s)
- Beilong Zhong
- Department of Thoracic Surgery, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Tao Wang
- Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Guangzhou, Guangdong, China.,Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jianyong Zou
- Department of Thoracic Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China.,Lung Cancer Research Center of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Fangfang Zheng
- Department of Pediatrics, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Rijiao Huang
- Department of Clinical Laboratory, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Xiaobin Zheng
- Department of Respiratory Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China
| | - Weilin Yang
- Department of Cardiothoracic Surgery of East Division, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhenguang Chen
- Department of Thoracic Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China.,Lung Cancer Research Center of Sun Yat-sen University, Guangzhou, Guangdong, China.,Department of Cardiothoracic Surgery of East Division, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
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8
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Li S, Lai Y, Fan J, Shen C, Che G. Clinicopathological and prognostic significance of Nestin expression in patients with non-small cell lung cancer: a systematic review and meta-analysis. Clin Exp Med 2016; 17:161-174. [PMID: 27099933 DOI: 10.1007/s10238-016-0421-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 04/09/2016] [Indexed: 02/07/2023]
Abstract
Latest evidence indicates that Nestin expression may be associated with the high malignancy and poor prognosis of non-small cell lung cancer (NSCLC), but a relevant consensus has not been reached until now. Therefore, we conducted this meta-analysis to evaluate the clinicopathological and prognostic significance of Nestin expression in patients with NSCLC. We searched PubMed, EMBASE and the Web of Science for eligible full-text articles. Odds ratio (OR) and hazard ratio (HR) with 95 % confidence interval (95 % CI) severed as the summarized statistics. Q-test and I 2-statistic were applied to evaluate the heterogeneity, and sensitivity analysis was conducted for adjustments. Publication bias was detected by Begg's test and Egger's test. Finally, eight eligible articles with 834 NSCLC cases were included. Nestin expression was found to be significantly associated with the unfavorable outcomes of differentiation degree (OR: 2.47; 95 % CI 1.61-3.79; P < 0.001), lymphatic metastasis (OR: 2.45; 95 % CI 1.41-4.25; P = 0.001), TNM stage (OR: 1.73; 95 % CI 1.07-2.79; P = 0.025) and tumor size (OR: 2.68; 95 % CI 1.20-5.98; P = 0.016), but not associated with gender, age, smoking status and NSCLC subtypes. Nestin expression could significantly predict the lower overall survival of NSCLC (HR: 2.41; 95 % CI 1.72-3.38; P < 0.001). The prognostic value of Nestin remained statistically reliable in the subgroups stratified by statistical analysis, patients' origins and follow-up periods, but not significant in patients with squamous cell carcinoma. In conclusion, Nestin expression may be an independent predictor for the poor prognosis and clinicopathological characteristics of NSCLC. Further studies are necessary to validate our discoveries.
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Affiliation(s)
- Shuangjiang Li
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Guoxue Alley No. 37, Chengdu, China
| | - Yutian Lai
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Guoxue Alley No. 37, Chengdu, China
| | - Jun Fan
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Guoxue Alley No. 37, Chengdu, China
| | - Cheng Shen
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Guoxue Alley No. 37, Chengdu, China
| | - Guowei Che
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Guoxue Alley No. 37, Chengdu, China.
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9
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Zhao W, Wang J, Zhu B, Duan Y, Chen F, Nian W, Sun J, Zhang B, Tong Z, Chen Z. IGFBP7 functions as a potential lymphangiogenesis inducer in non-small cell lung carcinoma. Oncol Rep 2015; 35:1483-92. [PMID: 26706909 DOI: 10.3892/or.2015.4516] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Accepted: 11/14/2015] [Indexed: 11/06/2022] Open
Abstract
Lymphangiogenesis is not only involved in the processes of embryonic development, tissue repair and chronic inflammation, but also in tumor lymphatic metastasis. Metastatic tumor cells spreading through lymphatic vessels occur in non-small cell lung carcinoma (NSCLC), with regional lymph node metastasis often being the most important prognostic factor for carcinoma patients. Recent research has identified a range of lymphangiogenic growth factors that could conceivably play a great role in promoting tumor lymphangiogenesis and lymphatic metastasis. The most extensively accepted signaling pathways promoting lymphangiogenesis in tumors include the secreted lymphangiogenic proteins: vascular endothelial growth factor-C (VEGF-C) and VEGF-D, and their cognate receptor on lymphatic endothelium VEGF receptor-3 (VEGFR-3). Targeting VEGF pathway strategy sometimes failed to decrease tumor metastasis in vivo experiments and clinical trials. It is unclear whether the tumor cells induced the lymphangiogenesis process, while VEGF pathway could not completely illustrate the mechanism of tumor cell lymphatic metastasis. To explore the novel tumor lymphangiogenesis targets, we screened 181 candidate genes between high lymphatic vascular density (LVD) and low LVD in lung adenocarcinomas using Human Genome U133 Plus 2.0 Microarray. Insulin-like growth factor binding protein 7 (IGFBP7) was proven to be associated with metastatic clinicopathological features and high LVD. Furthermore, by assessing the capability of lymphatic endothelial cell forming lymphatic vessel-like structures in vitro, it appears to enhance lymphangiogenesis.
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Affiliation(s)
- Weipeng Zhao
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, P.R. China
| | - Jun Wang
- Department of Oncology, General Hospital, Jinan Command of the People's Liberation Army, Jinan, Shandong 250031, P.R. China
| | - Bo Zhu
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Yuzhong Duan
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Fanglin Chen
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Weiqi Nian
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Jianguo Sun
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Bicheng Zhang
- Department of Oncology, Wuhan General Hospital of Guangzhou Command, People's Liberation Army, Wuhan, Hubei 430070, P.R. China
| | - Zhongsheng Tong
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, P.R. China
| | - Zhengtang Chen
- Institute of Cancer, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
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10
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Mirzapoiazova T, Mambetsariev N, Lennon FE, Mambetsariev B, Berlind JE, Salgia R, Singleton PA. HABP2 is a Novel Regulator of Hyaluronan-Mediated Human Lung Cancer Progression. Front Oncol 2015; 5:164. [PMID: 26258071 PMCID: PMC4508840 DOI: 10.3389/fonc.2015.00164] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 07/06/2015] [Indexed: 01/08/2023] Open
Abstract
Background Lung cancer is a devastating disease with limited treatment options. Many lung cancers have changes in their microenvironment including upregulation of the extracellular matrix glycosaminoglycan, hyaluronan (HA), which we have previously demonstrated can regulate the activity of the extracellular serine protease, hyaluronan binding protein 2 (HABP2). This study examined the functional role of HABP2 on HA-mediated human lung cancer dynamics. Methods Immunohistochemical analysis was performed on lung cancer patient samples using anti-HABP2 antibody. Stable control, shRNA, and HABP2 overexpressing human lung adenocarcinoma cells were evaluated using immunoblot analysis, migration, extravasation, and urokinase plasminogen activator (uPA) activation assays with or without high-molecular weight HA or low-molecular weight HA (LMW-HA). In human lung cancer xenograft models, primary tumor growth rates and lung metastasis were analyzed using consecutive tumor volume measurements and nestin immunoreactivity in nude mouse lungs. Results We provide evidence that HABP2 is an important regulator of lung cancer progression. HABP2 expression was increased in several subtypes of patient non-small cell lung cancer samples. Further, HABP2 overexpression increased LMW-HA-induced uPA activation, migration, and extravasation in human lung adenocarcinoma cells. In vivo, overexpression of HABP2 in human lung adenocarcinoma cells increased primary tumor growth rates in nude mice by ~2-fold and lung metastasis by ~10-fold compared to vector control cells (n = 5/condition). Conclusion Our data suggest a possible direct effect of HABP2 on uPA activation and lung cancer progression. Our observations suggest that exploration of HABP2 in non-small cell lung carcinoma merits further study both as a diagnostic and therapeutic option.
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Affiliation(s)
- Tamara Mirzapoiazova
- Section of Pulmonary and Critical Care, Department of Medicine, Pritzker School of Medicine, The University of Chicago , Chicago, IL , USA
| | - Nurbek Mambetsariev
- Section of Pulmonary and Critical Care, Department of Medicine, Pritzker School of Medicine, The University of Chicago , Chicago, IL , USA
| | - Frances E Lennon
- Section of Pulmonary and Critical Care, Department of Medicine, Pritzker School of Medicine, The University of Chicago , Chicago, IL , USA ; Section of Hematology/Oncology, Department of Medicine, Pritzker School of Medicine, The University of Chicago , Chicago, IL , USA
| | - Bolot Mambetsariev
- Section of Pulmonary and Critical Care, Department of Medicine, Pritzker School of Medicine, The University of Chicago , Chicago, IL , USA
| | - Joshua E Berlind
- Section of Pulmonary and Critical Care, Department of Medicine, Pritzker School of Medicine, The University of Chicago , Chicago, IL , USA
| | - Ravi Salgia
- Section of Hematology/Oncology, Department of Medicine, Pritzker School of Medicine, The University of Chicago , Chicago, IL , USA
| | - Patrick A Singleton
- Section of Pulmonary and Critical Care, Department of Medicine, Pritzker School of Medicine, The University of Chicago , Chicago, IL , USA ; Department of Anesthesia and Critical Care, Pritzker School of Medicine, The University of Chicago , Chicago, IL , USA
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11
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Lim JJ, Yang K, Taylor-Harding B, Wiedemeyer WR, Buckanovich RJ. VEGFR3 inhibition chemosensitizes ovarian cancer stemlike cells through down-regulation of BRCA1 and BRCA2. Neoplasia 2015; 16:343-53.e1-2. [PMID: 24862760 DOI: 10.1016/j.neo.2014.04.003] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 04/02/2014] [Accepted: 04/03/2014] [Indexed: 11/28/2022] Open
Abstract
In ovarian cancer, loss of BRCA gene expression in tumors is associated with improved response to chemotherapy and increased survival. A means to pharmacologically downregulate BRCA gene expression could improve the outcomes of patients with BRCA wild-type tumors. We report that vascular endothelial growth factor receptor 3 (VEGFR3) inhibition in ovarian cancer cells is associated with decreased levels of both BRCA1 and BRCA2. Inhibition of VEGFR3 in ovarian tumor cells was associated with growth arrest. CD133(+) ovarian cancer stemlike cells were preferentially susceptible to VEGFR3-mediated growth inhibition. VEGFR3 inhibition-mediated down-regulation of BRCA gene expression reversed chemotherapy resistance and restored chemosensitivity in resistant cell lines in which a BRCA2 mutation had reverted to wild type. Finally, we demonstrate that tumor-associated macrophages are a primary source of VEGF-C in the tumor microenvironment. Our studies suggest that VEGFR3 inhibition may be a pharmacologic means to downregulate BRCA genes and improve the outcomes of patients with BRCA wild-type tumors.
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Affiliation(s)
- Jaeyoung J Lim
- Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Kun Yang
- Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Barbie Taylor-Harding
- Department of Obstetrics and Gynecology, University of California, Los Angeles, CA, USA
| | - W Ruprecht Wiedemeyer
- Department of Obstetrics and Gynecology, University of California, Los Angeles, CA, USA
| | - Ronald J Buckanovich
- Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA; Division of Gynecology and Oncology, Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, USA.
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12
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Liang ZW, Wang Z, Chen H, Li C, Zhou T, Yang Z, Yang X, Yang Y, Gao G, Cai W. Nestin-mediated cytoskeletal remodeling in endothelial cells: novel mechanistic insight into VEGF-induced cell migration in angiogenesis. Am J Physiol Cell Physiol 2014; 308:C349-58. [PMID: 25500739 DOI: 10.1152/ajpcell.00121.2014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nestin is highly expressed in poorly differentiated and newly formed proliferating endothelial cells (ECs); however, the role of this protein in angiogenesis remains unknown. Additionally, the cytoskeleton and associated cytoskeleton-binding proteins mediate the migration of vascular ECs. Therefore, the aim of the present study was to determine whether VEGF regulates the cytoskeleton, as well as other associated proteins, to promote the migration of vascular ECs. The coexpression of nestin and CD31 during angiogenesis in alkali-burned rat corneas was examined via immunohistochemical analysis. Western blot analyses revealed that the exposure of human umbilical vein endothelial cells (HUVECs) to hypoxia promoted nestin expression in vitro. Additionally, nestin silencing via siRNA significantly inhibited many of the process associated with VEGF-induced angiogenesis, including tube formation and the migration and proliferation of HUVECs. Moreover, FITC-phalloidin labeling revealed that F-actin filaments were successfully organized into microfilaments in VEGF-treated cells, suggesting a network rearrangement accomplished via F-actin that contrasted with the uniform and loose actin filament network observed in the siRNA-nestin cells. The results of the present study highlight the key role played by nestin in activated HUVECs during angiogenesis. The inhibition of the ERK pathway suppressed the nestin expression induced by VEGF in the HUVECs. Therefore, our study provides the first evidence that nestin-mediated cytoskeleton remodeling in ECs occurs via filopodia formation along the cell edge, facilitating both filopodia localization and cell polarization and ultimately promoting HUVEC migration via VEGF induction, which may be associated with ERK pathway activation.
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Affiliation(s)
- Zhen-Wei Liang
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Zheng Wang
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Hui Chen
- Department of Obstetrics and Gynecology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China; Center for Disease Model Animals, Sun Yat-sen University, Guangzhou, China, Guangzhou, Guangdong Province, China
| | - Cen Li
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Ti Zhou
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Zhonghan Yang
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Xia Yang
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Yanfang Yang
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Guoquan Gao
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong Province, China; Key Laboratory of Functional Molecules from Marine Microorganisms (Sun Yat-sen University), Department of Education of Guangdong Province, Guangzhou, Guangdong Province, China; and
| | - Weibin Cai
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong Province, China; Center for Disease Model Animals, Sun Yat-sen University, Guangzhou, China, Guangzhou, Guangdong Province, China
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13
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El Deeb NM, Abdelzaher E. Stem cell markers OCT4 and nestin in laryngeal squamous cell carcinoma and their relation to survivin expression. Pathol Res Pract 2014; 210:751-8. [DOI: 10.1016/j.prp.2014.06.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 03/20/2014] [Accepted: 06/10/2014] [Indexed: 12/15/2022]
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Depletion of intermediate filament protein Nestin, a target of microRNA-940, suppresses tumorigenesis by inducing spontaneous DNA damage accumulation in human nasopharyngeal carcinoma. Cell Death Dis 2014; 5:e1377. [PMID: 25118937 PMCID: PMC4454294 DOI: 10.1038/cddis.2014.293] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 05/26/2014] [Accepted: 06/09/2014] [Indexed: 12/12/2022]
Abstract
Nasopharyngeal carcinoma (NPC) is a major malignant tumor of the head and neck region in southern China. The understanding of its underlying etiology is essential for the development of novel effective therapies. We report for the first time that microRNA-940 (miR-940) significantly suppresses the proliferation of a variety of cancer cell lines, arrests cells cycle, induces caspase-3/7-dependent apoptosis and inhibits the formation of NPC xenograft tumors in mice. We further show that miR-940 directly binds to the 3′-untranslated regions of Nestin mRNA and promotes its degradation. Likewise, depletion of Nestin inhibits tumor cell proliferation, arrest cells at G2/M, induces apoptosis and suppresses xenograft tumor formation in vivo. These functions of miR-940 can be reversed by ectopic expression of Nestin, suggesting that miR-940 regulates cell proliferation and survival through Nestin. Notably, we observed reduced miR-940 and increased Nestin levels in NPC patient samples. Protein microarray revealed that knockdown of Nestin in 5-8F NPC cells alters the phosphorylation of proteins involved in the DNA damage response, suggesting a mechanism for the miR-940/Nestin axis. Consistently, depletion of Nestin induced spontaneous DNA damage accumulation, delayed the DNA damage repair process and increased the sensitivity to irradiation and the chemotherapeutic agent doxorubicin. Collectively, our findings indicate that Nestin, which is downregulated by miR-940, can promote tumorigenesis in NPC cells through involvement in the DNA damage response. The levels of microRNA-940 and Nestin may serve as indicators of cancer status and prognosis.
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15
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Zhong B, Wang T, Lun X, Zhang J, Zheng S, Yang W, Li W, Xiang AP, Chen Z. Contribution of nestin positive esophageal squamous cancer cells on malignant proliferation, apoptosis, and poor prognosis. Cancer Cell Int 2014; 14:57. [PMID: 24966803 PMCID: PMC4071021 DOI: 10.1186/1475-2867-14-57] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Accepted: 06/16/2014] [Indexed: 02/05/2023] Open
Abstract
Background The stem cell-associated intermediate filament nestin has recently been linked with neoplastic transformation, but the specific mechanism by which nestin positive tumor cells leads to malignant invasion and metastasis behaviors of esophageal squamous cell carcinoma (ESCC) remains unclear. Methods To obtain insight into the biological role of nestin in ESCC, we explored the association of the nestin phenotype with malignant proliferation and apoptosis in esophageal squamous cancer cells. Nestin expression was determined in ESCC specimens and cell lines, and correlated with clinicopathological properties, including clinical prognosis and proliferative markers. The association of the nestin phenotype with apoptotic indicators was also analyzed. Results Nestin was expressed in ESCC specimens and cell lines. ESCC patients with nestin-positive tumors had significantly shorter median survival and progression-free survival times than those with nestin-negative tumors. Positive staining for the proliferation markers Ki67 and PCNA (proliferating cell nuclear antigen) was detected in 56.9% and 60.2% of ESCC specimens, respectively, and was strongly correlated with the nestin phenotype. Notably, expression of cyclin dependent kinase-5 (CDK5) and P35 was detected in 53.8% and 48.4% of ESCC specimens, respectively, and was strongly associated with the nestin phenotype. Conclusion Our data demonstrated nestin expression in ESCC specimens and cell lines, and revealed a strong association of the nestin phenotype with poor prognosis in ESCC patients. Furthermore, we showed that nestin positive ESCC cells played an important role in the malignant proliferation and apoptosis.
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Affiliation(s)
- Beilong Zhong
- Department of Thoracic Surgery, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Tao Wang
- Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Guangzhou, Guangdong, China.,Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xueping Lun
- Department of Thoracic Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,Lung Cancer Research Center of Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,Department of Cardiothoracic Surgery of East Division, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Jinli Zhang
- Guangzhou Research Institute of Traumatic Surgery, the Fourth Affiliated Hospital, Ji'nan University, Guangzhou, Guangdong 510220, China
| | - Sannv Zheng
- Department of Anesthesiology and Operating Room of East Division, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Weilin Yang
- Department of Thoracic Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,Lung Cancer Research Center of Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,Department of Cardiothoracic Surgery of East Division, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Weiqiang Li
- Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Guangzhou, Guangdong, China.,Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Andy Peng Xiang
- Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Guangzhou, Guangdong, China.,Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhenguang Chen
- Department of Thoracic Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,Lung Cancer Research Center of Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,Department of Cardiothoracic Surgery of East Division, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
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16
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Role of the stem cell-associated intermediate filament nestin in malignant proliferation of non-small cell lung cancer. PLoS One 2014; 9:e85584. [PMID: 24498263 PMCID: PMC3911905 DOI: 10.1371/journal.pone.0085584] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 11/29/2013] [Indexed: 12/17/2022] Open
Abstract
Background Nestin is associated with neoplastic transformation, but the mechanisms by which nestin contributes to invasion and malignancy of lung cancer remain unknown. Considering that proliferation is necessary for malignant behavior, we investigated the mechanism of nestin action in association with the proliferative properties of non-small cell lung cancer (NSCLC). Methods Nestin expression was examined in NSCLC specimens and cell lines. Associations with clinicopathological features, including prognosis and proliferative markers, were evaluated. Effects of nestin knockdown on proliferation and the signaling pathways involved were further investigated. Results Nestin was expressed in most cancer specimens and all the tumor cell lines analyzed. High nestin expression in malignant tissue was associated with high Ki-67 or PCNA levels and poor patient outcomes. Conversely, knockdown of nestin expression led to significant inhibition of tumor cell proliferation, decreased colony forming ability, and cell cycle G1 arrest. Furthermore, nestin knockdown resulted in inhibition of Akt and GSK3β activation. Conclusions Our data demonstrate that nestin expression in NSCLC cells is associated with poor prognosis of patients and tumor cell proliferation pathway. Downregulation of nestin efficiently inhibited lung cancer cell proliferation, which might be through affecting cell cycle arrest and Akt-GSK3β-Rb signaling pathway.
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17
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Narita K, Matsuda Y, Seike M, Naito Z, Gemma A, Ishiwata T. Nestin regulates proliferation, migration, invasion and stemness of lung adenocarcinoma. Int J Oncol 2014; 44:1118-30. [PMID: 24481417 DOI: 10.3892/ijo.2014.2278] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 01/07/2014] [Indexed: 11/05/2022] Open
Abstract
Lung cancer is the most common cancer and the most common cause of cancer-related death in the world. Nestin, a class VI intermediate filament, is known to be a cancer stem cell (CSC) marker as well as a neuroepithelial stem cell marker. High expression levels of nestin are reported in several types of cancers including lung, pancreatic and prostate cancers. Nestin is thought to regulate tumor cell proliferation, migration, invasion and CSC properties. Here, we confirmed nestin expression in non-small cell lung cancer (NSCLC): Immunohistochemical analysis in surgical specimens detected nestin protein expression in the cytoplasm of 20 of 48 adenocarcinoma (AD) cases (41.7%) and 25 of 47 squamous cell carcinoma cases (53.2%). Nestin immunoreactivity significantly correlated with not only tumor size and lymph node metastasis in NSCLC, but also poor survival in surgical patients with AD. High and moderate expression levels of nestin were confirmed in several lung AD cell lines including H1975 and PC-3. Nestin inhibition by shRNA decreased proliferation, migration, invasion and sphere formation in AD cells. Correspondingly, nestin upregulation by nestin gene transfection resulted in the opposite changes. Moreover, Akt inhibitor IV effectively decreased nestin expression via SRY-box containing protein 2 (Sox2) downregulation and overcame the enhanced sphere formation induced by nestin upregulation. Overall, our results show that nestin correlates with the aggressiveness and stemness of AD. Regulation of nestin via Akt/Sox2 is, thus, a promising candidate for novel therapeutic approaches to eradicate CSCs in lung AD.
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Affiliation(s)
- Kosuke Narita
- Departments of Pathology and Integrative Oncological Pathology, Nippon Medical School, Tokyo 113-8602, Japan
| | - Yoko Matsuda
- Departments of Pathology and Integrative Oncological Pathology, Nippon Medical School, Tokyo 113-8602, Japan
| | - Masahiro Seike
- Department of Pulmonary Medicine and Oncology, Graduate School of Medicine, Nippon Medical School, Tokyo 113-8603, Japan
| | - Zenya Naito
- Departments of Pathology and Integrative Oncological Pathology, Nippon Medical School, Tokyo 113-8602, Japan
| | - Akihiko Gemma
- Department of Pulmonary Medicine and Oncology, Graduate School of Medicine, Nippon Medical School, Tokyo 113-8603, Japan
| | - Toshiyuki Ishiwata
- Departments of Pathology and Integrative Oncological Pathology, Nippon Medical School, Tokyo 113-8602, Japan
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18
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Skarda J, Kolar Z, Janikova M, Radova L, Kolek V, Fridman E, Kopolovic J. Analysis of the prognostic impact of nestin expression in non-small cell lung cancer. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2012; 156:135-42. [PMID: 22837134 DOI: 10.5507/bp.2012.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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19
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Maund SL, Cramer SD. Pancreatic cancer with Nest-in tendencies. Cancer Biol Ther 2011; 11:559-61. [PMID: 21266845 DOI: 10.4161/cbt.11.6.14833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Sophia L Maund
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, USA
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20
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Ryuge S, Sato Y, Wang GQ, Matsumoto T, Jiang SX, Katono K, Inoue H, Satoh Y, Masuda N. Prognostic significance of nestin expression in resected non-small cell lung cancer. Chest 2010; 139:862-869. [PMID: 20829334 DOI: 10.1378/chest.10-1121] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND Nestin is a class 6 intermediate filament protein expressed in stem/progenitor cells during CNS development. Nestin expression has been detected in many kinds of tumors and was reported in a recent small-scale study in non-small cell lung cancer (NSCLC). We investigated the relationships between nestin expression and clinicopathologic parameters and determined its prognostic significance concerning survival in patients with resected NSCLC. METHODS Nestin expression in tumor cells was studied immunohistochemically in 171 consecutive patients with NSCLC, and associations with clinicopathologic parameters were evaluated. Kaplan-Meier survival analysis and Cox proportional hazards models were used to estimate the effect of nestin expression on survival. RESULTS Nestin expression was observed in tumor cell samples in 27 of the 171 patients with NSCLC (15.8%). Nestin had only cytoplasmic expression. Clinicopathologically, nestin expression was significantly associated with squamous cell carcinoma (P = .001), poorer differentiation (P = .007), lymph node metastasis (P = .008), intratumoral vascular invasion (P = .003), intratumoral lymphatic invasion (P = .008), pleural invasion (P = .039), and poorer prognosis (P < .001). Multivariable analysis confirmed that nestin expression increased the hazard of death after adjusting for other clinicopathologic factors (hazard ratio, 2.75; 95% CI, 1.39-5.46). CONCLUSIONS The present study suggests that nestin expression is a prognostic indicator of poorer survival probability for patients with resected NSCLC and may be used as a potential marker for select patients who should receive adjuvant chemotherapy.
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Affiliation(s)
- Shinichiro Ryuge
- Department of Respiratory Medicine, Kitasato University, Kanagawa, Japan
| | - Yuichi Sato
- Department of Molecular Diagnostics, School of Allied Health Sciences, Kitasato University, Kanagawa, Japan.
| | - Guo Qin Wang
- Kitasato Clinical Research Center, Kitasato University, Kanagawa, Japan
| | - Toshihide Matsumoto
- Department of Cellular and Histo-Pathology, Graduate School of Medical Sciences, Kitasato University, Kanagawa, Japan
| | - Shi Xu Jiang
- Department of Pathology, Kitasato University, Kanagawa, Japan
| | - Ken Katono
- Department of Respiratory Medicine, Kitasato University, Kanagawa, Japan
| | - Hayato Inoue
- Department of Thoracic Surgery, National Hospital Organization Sagamihara National Hospital, Kanagawa, Japan
| | - Yukitoshi Satoh
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kitasato University, Kanagawa, Japan
| | - Noriyuki Masuda
- Department of Respiratory Medicine, Kitasato University, Kanagawa, Japan
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