1
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Wang Y, Zhao YX, Zhang XW, Jiang YZ, Ma W, Zhang L, Dong W. USF1 Transcriptionally Regulates UGT1A3 and Promotes Lung Adenocarcinoma Progression by Regulating Neurotrophin Signaling Pathway. Front Mol Biosci 2022; 9:758968. [PMID: 35155573 PMCID: PMC8829114 DOI: 10.3389/fmolb.2022.758968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 01/10/2022] [Indexed: 11/13/2022] Open
Abstract
Background: Lung cancer remains the leading cause of oncological death. There is an urgent need to discover new molecular targets and to develop new treatments. Our previous study showed that one of the UDP-glucuronosyltransferases (UGTs) family, UGT1A3, is an important prognostic factor for lung adenocarcinoma (LUAD), inhibiting UGT1A3 could significantly improve the efficacy of anti-tumor drugs. In this study, we aimed to explore the upstream transcriptional factor (USF1) of UGT1A3 and its way of playing a role in LUAD. Methods: The UGT1A3 promoter region was analyzed and dual-luciferase assay was involved to explore whether USF1 could bind to this region, and the possible regulation effects of USF1 to UGT1A3 was indicated by siRNA and recovery experiment. Then, the Cancer Genome Atlas database was used to analyze USF1 clinical features. The expression level of USF1 was detected by immunohistochemical assay and Western blotting. Cellular viability, proliferation, migration and invasion potential were also investigated. Meanwhile, the effect of USF1 in LUAD progression was detected in a mouse model. The downstream signaling pathway was analyzed by bioinformatic analysis and the expression of all related proteins was detected. Results: UGT1A3 was transcriptionally regulated by USF1, which was highly expressed in all investigated samples including patients’ tissues, studied cells lines, and mouse models. The knockdown of USF1 inhibited cells viability, proliferation, migration and invasion, and reduced the tumor volume. Moreover, USF1 promoted the progress of LUAD by regulating the neurotrophin signaling pathway. Conclusion: As an important transcriptional regulator of UGT1A3, USF1 was highly expressed in LUAD and promoted LUAD progression by regulating the neurotrophin signaling pathway. These findings provide a new theoretical data that could serve as a good foundation for the treatment of LUAD.
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Affiliation(s)
- Yu Wang
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Yun-Xia Zhao
- Department of Neurology, Shandong Provinacial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xiang-Wei Zhang
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Yuan-Zhu Jiang
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Wei Ma
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Lin Zhang
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Wei Dong
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- *Correspondence: Wei Dong,
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2
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Zhao Z, Szczepanski AP, Tsuboyama N, Abdala-Valencia H, Goo YA, Singer BD, Bartom ET, Yue F, Wang L. PAX9 Determines Epigenetic State Transition and Cell Fate in Cancer. Cancer Res 2021; 81:4696-4708. [PMID: 34341073 PMCID: PMC8448979 DOI: 10.1158/0008-5472.can-21-1114] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 07/01/2021] [Accepted: 07/28/2021] [Indexed: 01/07/2023]
Abstract
Abnormalities in genetic and epigenetic modifications can lead to drastic changes in gene expression profiles that are associated with various cancer types. Small cell lung cancer (SCLC) is an aggressive and deadly form of lung cancer with limited effective therapies currently available. By utilizing a genome-wide CRISPR-Cas9 dropout screen in SCLC cells, we identified paired box protein 9 (PAX9) as an essential factor that is overexpressed in human malignant SCLC tumor samples and is transcriptionally driven by the BAP1/ASXL3/BRD4 epigenetic axis. Genome-wide studies revealed that PAX9 occupies distal enhancer elements and represses gene expression by restricting enhancer activity. In multiple SCLC cell lines, genetic depletion of PAX9 led to significant induction of a primed-active enhancer transition, resulting in increased expression of a large number of neural differentiation and tumor-suppressive genes. Mechanistically, PAX9 interacted and cofunctioned with the nucleosome remodeling and deacetylase (NuRD) complex at enhancers to repress nearby gene expression, which was reversed by pharmacologic HDAC inhibition. Overall, this study provides mechanistic insight into the oncogenic function of the PAX9/NuRD complex epigenetic axis in human SCLC and suggests that reactivation of primed enhancers may have potential therapeutic efficacy in treating SCLC expressing high levels of PAX9. SIGNIFICANCE: A genome-wide screen in small cell lung cancer reveals PAX9/NuRD-mediated epigenetic enhancer silencing and tumor progression, supporting the development of novel personalized therapeutic approaches targeting the PAX9-regulated network.
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Affiliation(s)
- Zibo Zhao
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Simpson Querrey Center for Epigenetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Aileen P. Szczepanski
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Simpson Querrey Center for Epigenetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Natsumi Tsuboyama
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Simpson Querrey Center for Epigenetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Hiam Abdala-Valencia
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Young Ah Goo
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Simpson Querrey Center for Epigenetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Proteomics Center of Excellence, Northwestern University, Evanston, Illinois
| | - Benjamin D. Singer
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Simpson Querrey Center for Epigenetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Elizabeth T. Bartom
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Simpson Querrey Center for Epigenetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Feng Yue
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Simpson Querrey Center for Epigenetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Lu Wang
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Simpson Querrey Center for Epigenetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.,Corresponding Author: Lu Wang, Biochemistry and Molecular Genetics, Northwestern University, Chicago, IL 60611. E-mail:
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3
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Establishment of novel long-term cultures from EpCAM positive and negative circulating tumour cells from patients with metastatic gastroesophageal cancer. Sci Rep 2020; 10:539. [PMID: 31953491 PMCID: PMC6968999 DOI: 10.1038/s41598-019-57164-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/09/2019] [Indexed: 12/19/2022] Open
Abstract
Circulating tumour cell (CTC) enumeration and profiling has been established as a valuable clinical tool in many solid malignancies. A key challenge in CTC research is the limited number of cells available for study. Ex vivo CTC culture permits expansion of these rare cell populations for detailed characterisation, functional assays including drug sensitivity testing, and investigation of the pathobiology of metastases. We report for the first time the establishment and characterisation of two continuous CTC lines from patients with gastroesophageal cancer. The two cell lines (designated UWG01CTC and UWG02CTC) demonstrated rapid tumorigenic growth in immunodeficient mice and exhibit distinct genotypic and phenotypic profiles which are consistent with the tumours of origin. UWG02CTC exhibits an EpCAM+, cytokeratin+, CD44+ phenotype, while UWG01CTC, which was derived from a patient with metastatic neuroendocrine cancer, displays an EpCAM−, weak cytokeratin phenotype, with strong expression of neuroendocrine markers. Further, the two cell lines show distinct differences in drug and radiation sensitivity which match differential cancer-associated gene expression pathways. This is strong evidence implicating EpCAM negative CTCs in metastasis. These novel, well characterised, long-term CTC cell lines from gastroesophageal cancer will facilitate ongoing research into metastasis and the discovery of therapeutic targets.
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4
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Meco D, Di Francesco AM, Melotti L, Ruggiero A, Riccardi R. Ectopic nerve growth factor prevents proliferation in glioma cells by senescence induction. J Cell Physiol 2018; 234:6820-6830. [PMID: 30417351 DOI: 10.1002/jcp.27430] [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: 08/13/2018] [Accepted: 08/27/2018] [Indexed: 12/30/2022]
Abstract
OBJECTIVE The neurotrophin nerve growth factor (NGF) affects survival, regulation and differentiation of both central and peripheral nervous system neurons. NGF exerts its effects primarily through tropomyosin receptor kinase A (TrkA), inducing a cascade of tyrosine kinase-initiated responses. In spite of its importance, the general behavior of NGF looks contradictory: its effects can be both stimulatory and inhibitory. The present study aims to explore the molecular mechanisms induced by NGF in glioma cancer cells. METHODS The effects of NGF were investigated in high grade glioma and low grade pediatric glioma (PLGG) cell lines through comparative studies. In particular, we investigated TrkA-mediated cellular pathways, molecular signaling, proliferation, cell cycle and cellular senescence. RESULTS We found that exposure of PLGG cells to NGF produced stable growth arrest with the features of a senescence phenotype but without the expression of anti-poly(ADP-ribose) polymerase cleavage, a marker of apoptosis. Moreover, NGF treatment promoted the phosphorylation of extracellular signal-regulated kinase1/2 (ERK1/2), signal transducer and activator of transcription 3 (STAT3), and phosphatidylinositol-3-kinase (PI3K)/protein kinase B (AKT) signaling. In addition, K252a, a TrkA inhibitor, significantly reduced the phosphorylation of the aforementioned signaling pathways, suggesting that NGF-activated ERK1/2 and AKT signaling take place downstream of TrkA-neurotrophin interaction. CONCLUSIONS These findings provide the first evidence that NGF can induce senescence of PLGG cells in a receptor-mediated fashion, thus supporting the hypothesis that in the clinical setting NGF might be beneficial to pediatric glioma patients.
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Affiliation(s)
- Daniela Meco
- Oncologia Pediatrica, Fondazione Policlinico Universitario A. Gemelli, IRCSS, Rome, Italy
| | | | | | - Antonio Ruggiero
- Oncologia Pediatrica, Fondazione Policlinico Universitario A. Gemelli, IRCSS, Rome, Italy.,Università Cattolica del Sacro Cuore, Rome, Italy
| | - Riccardo Riccardi
- Oncologia Pediatrica, Fondazione Policlinico Universitario A. Gemelli, IRCSS, Rome, Italy
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5
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Slatkin N, Zaki N, Wang S, Louie J, Sanga P, Kelly KM, Thipphawong J. Fulranumab as Adjunctive Therapy for Cancer-Related Pain: A Phase 2, Randomized, Double-Blind, Placebo-Controlled, Multicenter Study. THE JOURNAL OF PAIN 2018; 20:440-452. [PMID: 30368018 DOI: 10.1016/j.jpain.2018.09.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/20/2018] [Accepted: 09/28/2018] [Indexed: 01/07/2023]
Abstract
This randomized, double-blind (DB), placebo-controlled, phase 2 study assessed the efficacy and safety of fulranumab as a pain therapy adjunctive to opioids in terminally ill cancer patients. Ninety-eight patients were randomized (2:1) to receive one subcutaneous injection of fulranumab (9 mg) or placebo in the 4-week DB phase. Seventy-one (72%) patients entered the 48-week open-label extension phase and were administered 9 mg of fulranumab every 4 weeks. The study failed to demonstrated efficacy at the end of the DB phase (primary endpoint, mean [SD] change in average cancer-related pain intensity was -.8 (1.26) for fulranumab and -.7 (1.56) for placebo; P = .592). However, potential benefit is suggested based on secondary endpoints (30% responder rate [P = .020], Brief Pain Inventory-Short Form [BPI-SF] pain intensity subscale [P = .003], and pain interference subscale [P = .006]). The most commonly reported treatment-emergent adverse events were (fulranumab vs placebo): asthenia (16% vs 10%), decreased appetite (12% vs 6%), fatigue (10% vs 0%), and malignant neoplasm progression (10% vs 0%). Although no differences were seen between fulranumab and placebo groups on the primary endpoint, improvements in BPI-SF pain subscale scores and responder rates support further research of anti-nerve growth factor therapy in cancer-related pain. PERSPECTIVE: Efficacy and safety of fulranumab as adjunctive pain therapy in terminally ill cancer patients were assessed. Results suggest that anti-NGF agents may prove to be novel additions in helping to optimize pain relief in cancer patients who fail to respond adequately to opioids and other common co-analgesics.
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Affiliation(s)
- Neal Slatkin
- School of Medicine, University of California - Riverside, California.
| | - Naim Zaki
- Janssen Research & Development, LLC, Titusville, New Jersey
| | - Steven Wang
- Janssen Research & Development, LLC, Titusville, New Jersey
| | - John Louie
- Janssen Research & Development, LLC, Fremont, California
| | - Panna Sanga
- Janssen Research & Development, LLC, Titusville, New Jersey
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6
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The neurotrophic tyrosine kinase receptor TrkA and its ligand NGF are increased in squamous cell carcinomas of the lung. Sci Rep 2018; 8:8135. [PMID: 29802376 PMCID: PMC5970205 DOI: 10.1038/s41598-018-26408-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/10/2018] [Indexed: 02/06/2023] Open
Abstract
The neurotrophic tyrosine kinase receptor TrkA (NTRK1) and its ligand nerve growth factor (NGF) are emerging promoters of tumor progression. In lung cancer, drugs targeting TrkA are in clinical trials, but the clinicopathological significance of TrkA and NGF, as well as that of the precursor proNGF, the neurotrophin co-receptor p75NTR and the proneurotrophin co-receptor sortilin, remains unclear. In the present study, analysis of these proteins was conducted by immunohistochemistry and digital quantification in a series of 204 lung cancers of different histological subtypes versus 121 normal lung tissues. TrkA immunoreactivity was increased in squamous cell carcinoma compared with benign and other malignant lung cancer histological subtypes (p < 0.0001). NGF and proNGF were also increased in squamous cell carcinoma, as well as in adenocarcinoma (p < 0.0001). In contrast, p75NTR was increased across all lung cancer histological subtypes compared to normal lung (p < 0.0001). Sortilin was higher in adenocarcinoma and small cell carcinoma (p < 0.0001). Nerves in the tumor microenvironment were negative for TrkA, NGF, proNGF, p75NTR and sortilin. In conclusion, these data suggest a preferential therapeutic value of targeting the NGF-TrkA axis in squamous cell carcinomas of the lung.
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7
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Nerve growth factor regulates CD133 function to promote tumor cell migration and invasion via activating ERK1/2 signaling in pancreatic cancer. Pancreatology 2016; 16:1005-1014. [PMID: 27654574 DOI: 10.1016/j.pan.2016.09.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 08/07/2016] [Accepted: 09/12/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND Perineural invasion (PNI) is extremely high frequency among the various metastatic routes in pancreatic cancer. Nerve growth factor, secreted by astroglial cells, exerts effects on tumor invasion in some cancer cells, but its function on migration and invasion in pancreatic cancer is still unclear. In the present study, we determined the effects of NGF on modulating tumor cell metastatic potential and invasion activity and explored its mechanisms in pancreatic cancer. METHODS NGF and CD133 expression were detected in tumor tissues using immunohistochemical analysis and Western blotting analysis. The effects of NGF on the regulation of CD133 expression and the promotion of cancer migration and invasion were investigated using wound healing and matrigel transwell assay. A related mechanism that NGF regulates CD133's function via activating ERK1/2 signaling also was observed. RESULTS NGF/CD133 is overexpressed in human pancreatic cancer and promotes the migration and invasion of human pancreatic cancer cells through the activation of the ERK/CD133 signaling cascade. NGF/ERK signaling modulates the cancer cell EMT process, migration and invasion through the regulation of CD133 expression and its subcellular localization. CONCLUSIONS NGF/CD133 signaling initiated the migration and invasion of pancreatic cancer cells. NGF/CD133 might be an effective and potent therapeutic target for pancreatic cancer metastasis, particularly in PNI.
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8
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Demir IE, Tieftrunk E, Schorn S, Friess H, Ceyhan GO. Nerve growth factor & TrkA as novel therapeutic targets in cancer. Biochim Biophys Acta Rev Cancer 2016; 1866:37-50. [PMID: 27264679 DOI: 10.1016/j.bbcan.2016.05.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/24/2016] [Accepted: 05/28/2016] [Indexed: 12/11/2022]
Abstract
In the past 20years, nerve growth factor (NGF) and its receptors TrkA & p75NTR were recognized to be overexpressed in the overwhelming majority of human solid cancers. Recent studies discovered the presence of overactive TrkA signaling due to TrkA rearrangements or TrkA fusion products in frequent cancers like colorectal cancer, thyroid cancer, or acute myeloid leukemia. Thus, targeting TrkA/NGF via selective small-molecule-inhibitors or antibodies has gained enormous attention in the drug discovery sector. Clinical studies on the anti-cancer impact of NGF-blocking antibodies are likely to be accelerated after the recent removal of clinical holds on these agents by regulatory authorities. Based on these current developments, the present review provides not only a broad overview of the biological effects of NGF-TrkA-p75NTR on cancer cells and their microenvironment, but also explains why NGF and its receptors are going to evoke major interest as promising therapeutic anti-cancer targets in the coming decade.
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Affiliation(s)
- Ihsan Ekin Demir
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
| | - Elke Tieftrunk
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany
| | - Stephan Schorn
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany
| | - Helmut Friess
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany
| | - Güralp O Ceyhan
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany
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9
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Fiorentini C, Bodei S, Bedussi F, Fragni M, Bonini SA, Simeone C, Zani D, Berruti A, Missale C, Memo M, Spano P, Sigala S. GPNMB/OA protein increases the invasiveness of human metastatic prostate cancer cell lines DU145 and PC3 through MMP-2 and MMP-9 activity. Exp Cell Res 2014; 323:100-111. [DOI: 10.1016/j.yexcr.2014.02.025] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 01/21/2014] [Accepted: 02/22/2014] [Indexed: 01/03/2023]
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10
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Murmann T, Carrillo-García C, Veit N, Courts C, Glassmann A, Janzen V, Madea B, Reinartz M, Harzen A, Nowak M, Perner S, Winter J, Probstmeier R. Staurosporine and extracellular matrix proteins mediate the conversion of small cell lung carcinoma cells into a neuron-like phenotype. PLoS One 2014; 9:e86910. [PMID: 24586258 PMCID: PMC3938400 DOI: 10.1371/journal.pone.0086910] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 12/17/2013] [Indexed: 11/23/2022] Open
Abstract
Small cell lung carcinomas (SCLCs) represent highly aggressive tumors with an overall five-year survival rate in the range of 5 to 10%. Here, we show that four out of five SCLC cell lines reversibly develop a neuron-like phenotype on extracellular matrix constituents such as fibronectin, laminin or thrombospondin upon staurosporine treatment in an RGD/integrin-mediated manner. Neurite-like processes extend rapidly with an average speed of 10 µm per hour. Depending on the cell line, staurosporine treatment affects either cell cycle arrest in G2/M phase or induction of polyploidy. Neuron-like conversion, although not accompanied by alterations in the expression pattern of a panel of neuroendocrine genes, leads to changes in protein expression as determined by two-dimensional gel electrophoresis. It is likely that SCLC cells already harbour the complete molecular repertoire to convert into a neuron-like phenotype. More extensive studies are needed to evaluate whether the conversion potential of SCLC cells is suitable for therapeutic interventions.
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Affiliation(s)
- Tamara Murmann
- Neuro- and Tumor Cell Biology Group, Department of Nuclear Medicine, University Hospital of Bonn, Bonn, Germany
| | | | - Nadine Veit
- Neuro- and Tumor Cell Biology Group, Department of Nuclear Medicine, University Hospital of Bonn, Bonn, Germany
| | | | | | - Viktor Janzen
- Department of Hematology and Oncology, University Hospital of Bonn, Bonn, Germany
| | - Burkhard Madea
- Institute of Legal Medicine, University of Bonn, Bonn, Germany
| | - Markus Reinartz
- Oral Cell Biology Group, Department of Periodontology, Operative and Preventive Dentistry, Bonn, Germany
| | - Anne Harzen
- Proteomics Group, Max-Planck-Institute for Plant Breeding Research, Cologne, Germany
| | - Michael Nowak
- Department of Prostate Cancer Research, Institute of Pathology, University Hospital of Bonn, Bonn, Germany
| | - Sven Perner
- Department of Prostate Cancer Research, Institute of Pathology, University Hospital of Bonn, Bonn, Germany
| | - Jochen Winter
- Oral Cell Biology Group, Department of Periodontology, Operative and Preventive Dentistry, Bonn, Germany
| | - Rainer Probstmeier
- Neuro- and Tumor Cell Biology Group, Department of Nuclear Medicine, University Hospital of Bonn, Bonn, Germany
- * E-mail:
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11
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Ricci A, De Vitis C, Noto A, Fattore L, Mariotta S, Cherubini E, Roscilli G, Liguori G, Scognamiglio G, Rocco G, Botti G, Giarnieri E, Giovagnoli MR, De Toma G, Ciliberto G, Mancini R. TrkB is responsible for EMT transition in malignant pleural effusions derived cultures from adenocarcinoma of the lung. Cell Cycle 2013; 12:1696-703. [PMID: 23656788 PMCID: PMC3713128 DOI: 10.4161/cc.24759] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 04/18/2013] [Accepted: 04/20/2013] [Indexed: 12/17/2022] Open
Abstract
Lung cancer is the leading cause of cancer-related mortality worldwide. Recent evidence indicates that tumors contain a subpopulation of cancer stem cells (CSCs) that are responsible for tumor maintenance and spread. CSCs have recently been linked to the occurrence of epithelial-to-mesenchymal transition (EMT). Neurotrophins (NTs) are growth factors that regulate the biology of embryonic stem cells and cancer cells, but still little is known about the role NTs in the progression of lung cancer. In this work, we investigated the role of the NTs and their receptors using as a study system primary cell cultures derived from malignant pleural effusions (MPEs) of patients with adenocarcinoma of the lung. We assessed the expression of NTs and their receptors in MPE-derived adherent cultures vs. spheroids enriched in CSC markers. We observed in spheroids a selectively enhanced expression of TrkB, both at the mRNA and protein levels. Both K252a, a known inhibitor of Trk activity, and a siRNA against TrkB strongly affected spheroid morphology, induced anoikis and decreased spheroid forming efficiency. Treatment with neurotrophins reversed the inhibitory effect of K252a. Importantly, TrkB inhibition caused loss of vimentin expression as well as that of a set of transcription factors known to be linked to EMT. These ex vivo results nicely correlated with an inverse relationship between TrkB and E-cadherin expression measured by immunohistochemistry in a panel of lung adenocarcinoma samples. We conclude that TrkB is involved in full acquisition of EMT in lung cancer, and that its inhibition results in a less aggressive phenotype.
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Affiliation(s)
- Alberto Ricci
- Department of Clinical and Molecular Medicine; University “La Sapienza”; Rome, Italy
- Center of Research; San Pietro Hospital; Rome, Italy
| | - Claudia De Vitis
- Department of Experimental and Clinical Medicine; Catanzaro, Italy
- Laboratory of Surgery “P. Valdoni”; University “La Sapienza”; Rome, Italy
| | - Alessia Noto
- Department of Clinical and Molecular Medicine; University “La Sapienza”; Rome, Italy
- Laboratory of Surgery “P. Valdoni”; University “La Sapienza”; Rome, Italy
| | - Luigi Fattore
- Department of Clinical and Molecular Medicine; University “La Sapienza”; Rome, Italy
- Laboratory of Surgery “P. Valdoni”; University “La Sapienza”; Rome, Italy
| | - Salvatore Mariotta
- Department of Clinical and Molecular Medicine; University “La Sapienza”; Rome, Italy
- Center of Research; San Pietro Hospital; Rome, Italy
| | | | - Giuseppe Roscilli
- Department of Clinical and Molecular Medicine; University “La Sapienza”; Rome, Italy
| | | | | | - Gaetano Rocco
- IRCCS Istituto Nazionale Tumori “G. Pascale”; Naples, Italy
| | - Gerardo Botti
- IRCCS Istituto Nazionale Tumori “G. Pascale”; Naples, Italy
| | - Enrico Giarnieri
- Department of Clinical and Molecular Medicine; University “La Sapienza”; Rome, Italy
| | | | - Giorgio De Toma
- Laboratory of Surgery “P. Valdoni”; University “La Sapienza”; Rome, Italy
| | - Gennaro Ciliberto
- Department of Experimental and Clinical Medicine; Catanzaro, Italy
- IRCCS Istituto Nazionale Tumori “G. Pascale”; Naples, Italy
| | - Rita Mancini
- Department of Clinical and Molecular Medicine; University “La Sapienza”; Rome, Italy
- Laboratory of Surgery “P. Valdoni”; University “La Sapienza”; Rome, Italy
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12
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Chen W, Wang GM, Guo JM, Sun LA, Wang H. NGF/γ-IFN inhibits androgen-independent prostate cancer and reverses androgen receptor function through downregulation of FGFR2 and decrease in cancer stem cells. Stem Cells Dev 2012; 21:3372-80. [PMID: 22731611 DOI: 10.1089/scd.2012.0121] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Androgen-independent prostate cancer (AIPC) is difficult to treat. Present study is to explore the inhibitory effect of a cytokine environment on AIPC and its mechanism. We utilized nerve growth factor (NGF)/γ-interferon (γ-IFN) to change the cytokine environment. Animal models and 2 androgen receptor (AR)-negative prostate cancer cell lines were used to evaluate the effect of NGF/γ-IFN. Flow cytometry, immunocytochemistry, western blotting, Tunel assay, colony formation efficiency, gene microarray, and in vivo bioluminescence were used to discern the mechanisms within NGF/γ-IFN that effect the environment. In vitro, NGF/γ-IFN effectively inhibited the proliferation of AIPC cell lines and promoted the apoptosis of the cancer cells. In vivo, NGF/γ-IFN suppressed the growth and metastasis of a tumor mass that arose from the AIPC cell line. After NGF/γ-IFN treatment, the AR-negative cell lines re-expressed AR and were then able to respond to the androgen. Contrary to expectations, the proliferation of cells was inhibited after dihydrotestosterone was added, and the results indicated that NGF/γ-IFN decreased the proportion of cancer stem cells. NGF/γ-IFN worked mainly through the downregulation of fibroblast growth factor receptor 2.
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Affiliation(s)
- Wei Chen
- Department of Urology, Zhongshan Hospital of Fudan University, Shanghai, People's Republic of China
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13
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Yang CL, Liu YY, Ma YG, Xue YX, Liu DG, Ren Y, Liu XB, Li Y, Li Z. Curcumin blocks small cell lung cancer cells migration, invasion, angiogenesis, cell cycle and neoplasia through Janus kinase-STAT3 signalling pathway. PLoS One 2012; 7:e37960. [PMID: 22662257 PMCID: PMC3360669 DOI: 10.1371/journal.pone.0037960] [Citation(s) in RCA: 167] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Accepted: 04/26/2012] [Indexed: 12/14/2022] Open
Abstract
Curcumin, the active component of turmeric, has been shown to protect against carcinogenesis and prevent tumor development. However, little is known about its anti-tumor mechanism in small cell lung cancer (SCLC). In this study, we found that curcumin can inhibit SCLC cell proliferation, cell cycle, migration, invasion and angiogenesis through suppression of the STAT3. SCLC cells were treated with curcumin (15 µmol/L) and the results showed that curcumin was effective in inhibiting STAT3 phosphorylation to downregulate of an array of STAT3 downstream targets ,which contributed to suppression of cell proliferation, loss of colony formation, depression of cell migration and invasion. Curcumin also suppressed the expression of proliferative proteins (Survivin, Bcl-X(L) and Cyclin B1), and invasive proteins (VEGF, MMP-2, MMP-7 and ICAM-1). Knockdown of STAT3 expression by siRNA was able to induce anti-invasive effects in vitro. In contrast, activation of STAT3 upstream of interleukin 6 (IL-6) leads to the increased cell proliferation ,cell survival, angiogenesis, invasion, migration and tumor growth. Our findings illustrate the biologic significance of IL-6/JAK/STAT3 signaling in SCLC progression and provide novel evidence that the pathway may be a new potential target for therapy of SCLC. It was concluded that curcumin is a potent agent in the inhibition of STAT3 with favorable pharmacological activity,and curcumin may have translational potential as an effective cancer therapeutic or preventive agent for SCLC.
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Affiliation(s)
- Cheng-Liang Yang
- Department of Thoracic Surgery, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning Province, China
| | - Yong-Yu Liu
- Department of Thoracic Surgery, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning Province, China
- * E-mail:
| | - Ye-Gang Ma
- Department of Thoracic Surgery, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning Province, China
| | - Yi-Xue Xue
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, Liaoning Province, China
| | - De-Gui Liu
- Department of Thoracic Surgery, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning Province, China
| | - Yi Ren
- Department of Thoracic Surgery, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning Province, China
| | - Xiao-Bai Liu
- The 96th Class, 7-year Program, China Medical University, Shenyang, Liaoning Province, China
| | - Yao Li
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, Liaoning Province, China
| | - Zhen Li
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
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14
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Díez-Torre A, Silván U, Moreno P, Gumucio J, Aréchaga J. Peritubular myoid cell-derived factors and its potential role in the progression of testicular germ cell tumours. ACTA ACUST UNITED AC 2011; 34:e252-64; discussion e264-5. [DOI: 10.1111/j.1365-2605.2011.01168.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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15
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Prakash Y, Thompson MA, Meuchel L, Pabelick CM, Mantilla CB, Zaidi S, Martin RJ. Neurotrophins in lung health and disease. Expert Rev Respir Med 2010; 4:395-411. [PMID: 20524922 DOI: 10.1586/ers.10.29] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Neurotrophins (NTs) are a family of growth factors that are well-known in the nervous system. There is increasing recognition that NTs (nerve growth factor, brain-derived neurotrophic factor and NT3) and their receptors (high-affinity TrkA, TrkB and TrkC, and low-affinity p75NTR) are expressed in lung components including the nasal and bronchial epithelium, smooth muscle, nerves and immune cells. NT signaling may be important in normal lung development, developmental lung disease, allergy and inflammation (e.g., rhinitis, asthma), lung fibrosis and even lung cancer. In this review, we describe the current status of our understanding of NT signaling in the lung, with hopes of using aspects of the NT signaling pathway in the diagnosis and therapy of lung diseases.
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Affiliation(s)
- Ys Prakash
- Department of Anesthesiology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.
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16
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Ricci A, Mariotta S, Pompili E, Mancini R, Bronzetti E, De Vitis C, Pisani L, Cherubini E, Bruno P, Gencarelli G, Giovagnoli MR, Terzano C, Ciliberto G, Giarnieri E, Fumagalli L. Neurotrophin system activation in pleural effusions. Growth Factors 2010; 28:221-31. [PMID: 20214505 DOI: 10.3109/08977191003677402] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Neurotrophins (NTs) expression was assessed in malignant and non-malignant pleural effusions (inflammatory exudates and transudates). Enzyme-linked immunosorbent assay, in malignant exudates from small and non-small cell lung cancer (SCLC and NSCLC), detected nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), and neurotrophin-3 (NT-3), and their levels are higher as compared with inflammatory and transudative effusions. By immunoblots, in cultured cancer cells coming from malignant pleural effusions, NTs and low- and high-affinity NT receptors were detected in a percentage of SCLC and NSCLC. Proliferation assay demonstrated that BDNF significantly increased cancer cell proliferation in vitro, on the contrary, NT-3 reduced cancer cell growth rate and NGF did not modify cell growth. Moreover, NGF protects cells from death during starvation. These effects are reverted by the addition of NT receptor antagonists. Cultured cancer cells injected into the lung of immunodeficient mice generate lung tumors expressing NTs and NT receptors. These findings suggest that NTs may be able to modulate cancer cell behavior and their growth.
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MESH Headings
- Aged
- Aged, 80 and over
- Animals
- Blotting, Western
- Brain-Derived Neurotrophic Factor/blood
- Brain-Derived Neurotrophic Factor/metabolism
- Brain-Derived Neurotrophic Factor/pharmacology
- Carcinoma, Non-Small-Cell Lung/metabolism
- Enzyme-Linked Immunosorbent Assay
- Female
- Flow Cytometry
- Gene Expression
- Humans
- Intercellular Signaling Peptides and Proteins/metabolism
- Lung/pathology
- Lung Neoplasms/metabolism
- Male
- Mice
- Mice, Inbred NOD
- Mice, SCID
- Middle Aged
- Neoplasm Transplantation
- Nerve Growth Factors/blood
- Nerve Growth Factors/metabolism
- Nerve Growth Factors/pharmacology
- Neurotrophin 3/blood
- Neurotrophin 3/metabolism
- Neurotrophin 3/pharmacology
- Pleural Effusion/genetics
- Pleural Effusion/metabolism
- Pleural Effusion, Malignant/genetics
- Pleural Effusion, Malignant/metabolism
- Receptor, trkB/metabolism
- Receptors, Nerve Growth Factor/metabolism
- Signal Transduction
- Small Cell Lung Carcinoma/metabolism
- Tumor Cells, Cultured
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17
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Arrighi N, Bodei S, Zani D, Simeone C, Cunico SC, Missale C, Spano P, Sigala S. Nerve growth factor signaling in prostate health and disease. Growth Factors 2010; 28:191-201. [PMID: 20166899 DOI: 10.3109/08977190903578678] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The prostate is one of the most abundant sources of nerve growth factor (NGF) in different species, including humans. NGF and its receptors are implicated in the control of prostate cell proliferation and apoptosis and it can either support or suppress cell growth. The co-expression of both NGF receptors, p75(NGFR) and tropomyosin-related kinase A (trkA), represents a crucial condition for the antiproliferative effect of NGF; indeed, p75(NGFR) is progressively lost during prostate tumorigenesis and its disappearance represents a malignancy marker of prostate adenocarcinoma (PCa). Interestingly, a dysregulation of NGF signal transduction was found in a number of human tumors. This review summarizes the current knowledge on the role of NGF and its receptors in prostate and in PCa. Conclusions bring to the hypothesis that the NGF network could be a candidate for future pharmacological manipulation in the PCa therapy: in particular the re-expression of p75(NTR) and/or the negative modulation of trkA could represent a target to induce apoptosis and to reduce proliferation and invasiveness of PCa.
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Affiliation(s)
- Nicola Arrighi
- Division of Urology, University of Brescia Medical School, P.le Spedali Civili 1, 25124 Brescia, Italy
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18
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NGF inhibits human leukemia proliferation by downregulating cyclin A1 expression through promoting acinus/CtBP2 association. Oncogene 2009; 28:3825-36. [PMID: 19668232 PMCID: PMC3481846 DOI: 10.1038/onc.2009.236] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cyclin A1 is essential for leukemia progression, and its expression is tightly regulated by acinus, a nuclear speckle protein. However, the molecular mechanism of how acinus mediates cyclin A1 expression remains elusive. Here we show that transcription corepressor CtBP2 directly binds acinus, which is regulated by nerve growth factor (NGF), inhibiting its stimulatory effect on cyclin A1, but not cyclin A2, expression in leukemia. NGF, a cognate ligand for the neurotrophic receptor TrkA, promotes the interaction between CtBP2 and acinus through triggering acinus phosphorylation by Akt. Overexpression of CtBP2 diminishes cyclin A1 transcription, whereas depletion of CtBP2 abolishes NGF's suppressive effect on cyclin A1 expression. Strikingly, gambogic amide, a newly identified TrkA agonist, potently represses cyclin A1 expression, thus blocking K562 cell proliferation. Moreover, gambogic amide ameliorates the leukemia progression in K562 cells inoculated nude mice. Hence, NGF downregulates cyclin A1 expression through escalating CtBP2/acinus complex formation, and gambogic amide might be useful for human leukemia treatment.
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19
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Abstract
Small cell lung cancer (SCLC) is an aggressive, rapidly metastasising tumour. Previously, we demonstrated the influence of CXCL12–CXCR4 interaction on processes involved in metastasis and chemoresistance in SCLC. We show here that STAT3 is expressed in both primary SCLC tumour tissues and SCLC cell lines. We investigated the function of STAT3 upon CXCL12 stimulation in SCLC cell lines. Small cell lung cancer cell lines present constitutive phosphorylation of STAT3, and in the reference cell lines NCI-H69 and NCI-H82 constitutive phosphorylation was further increased by CXCL12 stimulation. Further investigating this signalling cascade, we showed that it involves interactions between CXCR4 and JAK2 in both cell lines. However CXCL12-induced adhesion to VCAM-1 could be completely inhibited by the JAK2 inhibitor AG490 only in NCI-H82. Furthermore, CXCR4 antagonist but not AG490 inhibited cell adhesion whereas both antagonisms were shown to inhibit growth of the cells in soft agar, indicating the central involvement of this signalling in anchorage-independent growth of SCLC cells. Most interestingly, while using primary tumour material, we observed that in contrast to non-small-cell lung cancer samples from primary tumour tissues, all analysed samples from SCLC were strongly positive for tyrosine-phosphorylated STAT3. Taken together, these data indicate that STAT3 is constitutively phosphorylated in SCLC and is important in SCLC growth and spreading thus presenting an interesting target for therapy.
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20
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Moon WS, Jang KY, Chung MJ, Kang MJ, Lee DG, Lee H, Park HS. The Expressions of Nerve Growth Factor and Its Receptor p75NGFR in Hepatocellular Carcinoma: Their Relation with the Clinicopathologic Factors. KOREAN JOURNAL OF PATHOLOGY 2009. [DOI: 10.4132/koreanjpathol.2009.43.2.145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Woo Sung Moon
- Department of Pathology, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Kyu Yun Jang
- Department of Pathology, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Myoung Ja Chung
- Department of Pathology, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Myoung Jae Kang
- Department of Pathology, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Dong Geun Lee
- Department of Pathology, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Ho Lee
- Department of Forensic Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Ho Sung Park
- Department of Pathology, Chonbuk National University Medical School and Hospital, Jeonju, Korea
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21
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Bizzarri M, Cucina A, Conti F, D’Anselmi F. Beyond the oncogene paradigm: understanding complexity in cancerogenesis. Acta Biotheor 2008; 56:173-96. [PMID: 18288572 DOI: 10.1007/s10441-008-9047-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2007] [Accepted: 02/06/2008] [Indexed: 12/13/2022]
Abstract
In the past decades, an enormous amount of precious information has been collected about molecular and genetic characteristics of cancer. This knowledge is mainly based on a reductionistic approach, meanwhile cancer is widely recognized to be a 'system biology disease'. The behavior of complex physiological processes cannot be understood simply by knowing how the parts work in isolation. There is not solely a matter how to integrate all available knowledge in such a way that we can still deal with complexity, but we must be aware that a deeply transformation of the currently accepted oncologic paradigm is urgently needed. We have to think in terms of biological networks: understanding of complex functions may in fact be impossible without taking into consideration influences (rules and constraints) outside of the genome. Systems Biology involves connecting experimental unsupervised multivariate data to mathematical and computational approach than can simulate biologic systems for hypothesis testing or that can account for what it is not known from high-throughput data sets. Metabolomics could establish the requested link between genotype and phenotype, providing informations that ensure an integrated understanding of pathogenic mechanisms and metabolic phenotypes and provide a screening tool for new targeted drug.
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22
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Sigala S, Bodei S, Missale C, Zani D, Simeone C, Cunico SC, Spano PF. Gene expression profile of prostate cancer cell lines: effect of nerve growth factor treatment. Mol Cell Endocrinol 2008; 284:11-20. [PMID: 18280641 DOI: 10.1016/j.mce.2007.12.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2007] [Revised: 12/19/2007] [Accepted: 12/22/2007] [Indexed: 11/30/2022]
Abstract
A dysregulation of the nerve growth factor (NGF)-mediated control of prostate cell growth is associated with the malignant progression of prostate epithelial cells. Exogenous NGF induced in prostate cancer (PCa) cell lines DU145 and PC3 the expression of p75(NGFR), accompanied by a reduction of the cell malignancy. The aim of this study was to analyze the profile of NGF-regulated genes the PCa cell line DU145 by using the cDNA microarray technique. NGF treatment of DU145 cells decreased the expression of 52 known genes, while the expression of 40 known genes was increased. NGF treatment of the DU145 cell line modified the expression profile of clusters of genes involved in invasion and metastasis, in cell proliferation and apoptosis, inflammation, cell metabolism and transcriptional activity. Interestingly, NGF induced the same pattern of gene modifications in both PCa cell lines. Data presented here may help to identify gene/proteins that dispose to PCa progression and to assess future markers that could allow the development of new clinic diagnostic and therapeutical approaches.
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Affiliation(s)
- S Sigala
- Section of Pharmacology, Department of Biomedical Sciences and Biotechnology, University of Brescia Medical School, V.le Europa 11, 25123 Brescia, Italy.
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23
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Rende M, Pistilli A, Stabile AM, Terenzi A, Cattaneo A, Ugolini G, Sanna P. Role of nerve growth factor and its receptors in non-nervous cancer growth: efficacy of a tyrosine kinase inhibitor (AG879) and neutralizing antibodies antityrosine kinase receptor A and antinerve growth factor: an in-vitro and in-vivo study. Anticancer Drugs 2007; 17:929-41. [PMID: 16940803 DOI: 10.1097/01.cad.0000224459.13651.fd] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Neurotrophins, originally identified as neuronal survival and differentiation factors, exert their actions through tyrosine kinase receptors such as TrKA, in the case of the nerve growth factor. Neurotrophins also interact with p75, a common receptor devoid of kinase activity and connected to apoptosis. Here we show that nerve growth factor, TrKA and p75 are expressed in cell lines of human cancers of various non-neuronal lineages, including a panel of muscular sarcomas, and we show that all cell lines investigated actively release nerve growth factor into the medium. Treatment by AG879 (a tyrosine kinase inhibitor that inhibits TrKA phosphorylation, but not TrKB and TrKC) or by neutralizing antibodies anti-nerve growth factor and anti-TrKA dramatically decreases their proliferation with a variable increase in apoptosis. Similarly, p75 transfection induced a significant increase in apoptosis. Furthermore, for the first time we have determined by high-performance liquid chromatography the pharmacokinetic profile of a novel preparation of AG879 and we have established an optimal plasmatic concentration for in-vivo administration. Treatment with AG879 in immunodepressed mice grafted with leiomyosarcoma or promyelocytic leukemia cells resulted in dramatic reductions in tumor sizes. In conclusion, our data have a novel preclinical potential for revealing a possible therapeutical utility in targeting in-vivo nerve growth factor/TrKA by AG879 or neutralizing antibody anti-TrKA in cancer proliferation and in muscle sarcomas, in particular.
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Affiliation(s)
- Mario Rende
- Section of Anatomy, Department of Experimental Medicine, University of Perugia School of Medicine, Via del Giochetto, 06122 Perugia, Italy.
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24
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Tokusashi Y, Asai K, Tamakawa S, Yamamoto M, Yoshie M, Yaginuma Y, Miyokawa N, Aoki T, Kino S, Kasai S, Ogawa K. Expression of NGF in hepatocellular carcinoma cells with its receptors in non-tumor cell components. Int J Cancer 2005; 114:39-45. [PMID: 15523689 DOI: 10.1002/ijc.20685] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Nerve growth factor (NGF) is suggested to have a role in tumor progression in addition to its role in differentiation and survival of neuronal cells. We investigated expression of NGF and its receptors, TrkA and p75NTR, in hepatocellular carcinomas (HCCs). Although hepatocytes and hepatic stellate cells (HSCs) showed respectively weak and intense NGF immunostaining in the background livers of patients suffering from liver cirrhosis (LC) or chronic hepatitis (CH), intense staining was demonstrated in HCC cells of 33 of 54 (61.1%) tumors. RT-PCR detected NGF mRNA in 7 freshly-isolated HCC samples, and in 2 of 4 cases, in which both background livers and tumors could be analyzed, NGF mRNA was more abundant in the tumors than the background livers. TrkA was detected in the smooth muscle cells of hepatic arteries, but it was negative in tumor cells as well as non-neoplastic hepatocytes. p75NTR and alpha-smooth muscle actin (alphaSMA) was expressed in HSCs in the background liver and fibroblast-like cells in stromal septa, whereas HSCs within the HCC tissues were mostly negative for p75NTR but positive for alphaSMA. This suggests that HSCs in HCC have a different property from those in background livers. Furthermore, the stromal septa contained abundant nerve fibers, which may be related to the increased NGF expression in HCC cells. NGF and its receptors are then thought to have a role in cellular interactions involving HCC cells, HSCs, arterial cells and nerve cells in HCC tissues.
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25
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Mohammad HP, Seachrist DD, Quirk CC, Nilson JH. Reexpression of p8 contributes to tumorigenic properties of pituitary cells and appears in a subset of prolactinomas in transgenic mice that hypersecrete luteinizing hormone. Mol Endocrinol 2004; 18:2583-93. [PMID: 15243129 DOI: 10.1210/me.2004-0163] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Targeted overexpression of LH in transgenic mice causes hyperproliferation of Pit-1-positive pituitary cells and development of functional adenomas. To characterize gene expression changes associated with pituitary tumorigenesis, we performed microarray studies using Affymetrix GeneChips comparing expression profiles from pituitary tumors in LH-overexpressing mice to wild-type control pituitaries. We identified a number of candidate genes with altered expression in pituitary tumors. One of these, p8 (candidate of metastasis-1), encodes a native high-mobility group-like transcription factor previously shown to be necessary for ras-mediated transformation of mouse embryonic fibroblasts and also implicated in breast cancer progression. Herein, we show that expression of p8, normally quiescent in adult pituitary, localizes to tumor foci containing lactotropes, suggesting a linkage with their transformation. To further establish the functional significance of p8 in pituitary tumorigenesis, we constructed several clonal cell lines with reduced expression of p8 from a parent GH3 somatolactotrope cell line. These clonal derivates, along with the parent cell line, were tested for tumorigenicity by injection into athymic mice. When compared with wild-type GH3 with higher levels of p8, GH3 cells with reduced expression of p8 displayed attenuated tumor development or failed to develop tumors at all. Similar results were obtained with gonadotrope-derived cell lines that displayed reduced expression of p8. Together, these data suggest that maintenance of the transformed phenotype of pituitary GH3 cells requires expression of p8 and that it may play a similar role when reexpressed in a subset of lactotropes that form prolactinomas in vivo.
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Affiliation(s)
- Helai P Mohammad
- Department of Pharmacology, Case Western Reserve University, Cleveland, Ohio 44106, USA
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26
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Abstract
Neurotrophins are growth factors that exert multiple actions on neuronal and nonneuronal cells. Neurotrophin receptors are expressed on central and peripheral neurons, lymphocytes, monocytes, mast cells, and fibroblasts. In accordance with the distribution of their receptors, neurotrophins control the development and function of neurons and regulate inflammatory processes. Production of neurotrophins is altered in asthma, lung cancer, and pulmonary fibrosis. Evidence from animal models has implicated nerve growth factor (NGF) as a mediator of pulmonary inflammation, bronchoconstriction, and airway hyperreactivity, all of which are hallmarks of asthma. NGF regulates the growth of lung tumor cells and cultured lung fibroblasts. Thus neurotrophins, particularly NGF, are candidate molecules for regulating disease processes in asthma, lung cancer, and pulmonary fibrosis.
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Affiliation(s)
- Gary W Hoyle
- Section of Pulmonary Diseases, Critical Care and Environmental Medicine, Department of Medicine, SL-9, Tulane University Health Sciences Center, New Orleans, LA 70112, USA.
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27
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Zhu Z, Kleeff J, Kayed H, Wang L, Korc M, Büchler MW, Friess H. Nerve growth factor and enhancement of proliferation, invasion, and tumorigenicity of pancreatic cancer cells. Mol Carcinog 2002; 35:138-47. [PMID: 12410565 DOI: 10.1002/mc.10083] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Nerve growth factor (NGF) exerts both stimulatory and inhibitory effects on neuronal and certain non-neuronal tumors. In pancreatic cancer NGF is overexpressed, and this overexpression is associated with increased perineural invasion. NGF has the potential to stimulate the growth of some pancreatic cancer cell lines, and this effect is mediated by the phosphorylation of tyrosine kinase receptor A and mitogen-activated protein kinase activation; it is dependent on the expression levels of tyrosine kinase receptor A and p75 receptors. To determine whether cancer cell-derived NGF can participate in the regulation of pancreatic cancer cell proliferation, PANC-1 human pancreatic cancer cells were stably transfected with a full-length human beta-NGF expression vector. In vitro and in vivo growth characteristics were analyzed by proliferation assays and invasion assays and in a nude mouse tumor model. Stable transfection of NGF in PANC-1 cells resulted in enhanced anchorage-dependent growth, with a decrease in doubling times of up to 50%, and in an approximately twofold increase in anchorage-independent cell growth and cell invasion. Furthermore, stably transfected PANC-1 cells showed enhanced tumorigenicity in nude mice. These results suggest that NGF has the capacity to act in a paracrine and/or an autocrine manner in pancreatic cancer and that it enhances cancer cell growth and invasion in vivo, thereby contributing to the aggressiveness and poor prognosis of this disease.
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Affiliation(s)
- Zhaowen Zhu
- Department of General Surgery, University of Heidelberg, Heidelberg, Germany
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28
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Fiorentini C, Guerra N, Facchetti M, Finardi A, Tiberio L, Schiaffonati L, Spano P, Missale C. Nerve growth factor regulates dopamine D(2) receptor expression in prolactinoma cell lines via p75(NGFR)-mediated activation of nuclear factor-kappaB. Mol Endocrinol 2002; 16:353-66. [PMID: 11818506 DOI: 10.1210/mend.16.2.0773] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Two groups of prolactinoma cell lines were identified. One group (responder) expresses both D(2) dopamine receptors and an autocrine loop mediated by nerve growth factor (NGF) and one group (nonresponder) lacks both D(2) receptors and NGF production. D(2) receptor expression in these cell lines is dependent on NGF. Indeed, NGF inactivation in responder cells decreases D(2) receptor density, while NGF treatment induces D(2) receptor expression in nonresponders. Here we show that inactivation of p75(NGFR), but not of trkA, resulted in D(2) receptor loss in responder cells and prevented D(2) receptor expression induced by NGF in the nonresponder. Analysis of nuclear factor-kappaB (NF-kappaB) nuclear accumulation and binding to corresponding DNA consensus sequences indicated that in NGF-secreting responder cells, but not in nonresponders, NF-kappaB is constitutively activated. Moreover, NGF treatment of nonresponder cells induced both nuclear translocation and DNA binding activity of NF-kappaB complexes containing p50, p65/RelA, and cRel subunits, an effect prevented by anti-p75(NGFR) antibodies. Disruption of NF-kappaB nuclear translocation by SN50 remarkably impaired D(2) receptor expression in responder cells and prevented D(2) gene expression induced by NGF in nonresponders. These data indicate that in prolactinoma cells the effect of NGF on D(2) receptor expression is mediated by p75(NGFR) in a trkA-independent way and that NGF stimulation of p75(NGFR) activates NF-kappaB, which is required for D(2) gene expression. We thus suggest that NF-kappaB is a key transcriptional regulator of the D(2) gene and that this mechanism may not be confined to pituitary tumors, but could also extend to other dopaminergic systems.
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Affiliation(s)
- Chiara Fiorentini
- Division of Pharmacology, Department of Biomedical Sciences and Biotechnology, University of Brescia, 25123 Brescia, Italy
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29
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Páez-Pereda M, Kovalovsky D, Hopfner U, Theodoropoulou M, Pagotto U, Uhl E, Losa M, Stalla J, Grübler Y, Missale C, Arzt E, Stalla GK. Retinoic acid prevents experimental Cushing syndrome. J Clin Invest 2001; 108:1123-31. [PMID: 11602619 PMCID: PMC209498 DOI: 10.1172/jci11098] [Citation(s) in RCA: 139] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Cushing syndrome is caused by an excess of adrenocorticotropic hormone (ACTH) production by neuroendocrine tumors, which subsequently results in chronic glucocorticoid excess. We found that retinoic acid inhibits the transcriptional activity of AP-1 and the orphan receptors Nur77 and Nurr1 in ACTH-secreting tumor cells. Retinoic acid treatment resulted in reduced pro-opiomelanocortin transcription and ACTH production. ACTH inhibition was also observed in human pituitary ACTH-secreting tumor cells and a small-cell lung cancer cell line, but not in normal cells. This correlated with the expression of the orphan receptor COUP-TFI, which was found in normal corticotrophs but not in pituitary Cushing tumors. COUP-TFI expression in ACTH-secreting tumor cells blocked retinoic acid action. Retinoic acid also inhibited cell proliferation and, after prolonged treatment, increased caspase-3 activity and induced cell death in ACTH-secreting cells. In adrenal cortex cells, retinoic acid inhibited corticosterone production and cell proliferation. The antiproliferative action and the inhibition of ACTH and corticosterone produced by retinoic acid were confirmed in vivo in experimental ACTH-secreting tumors in nude mice. Thus, we conclude that the effects of retinoic acid combine in vivo to reverse the endocrine alterations and symptoms observed in experimental Cushing syndrome.
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Affiliation(s)
- M Páez-Pereda
- Max Planck Institute of Psychiatry, Kraepelinstrasse 10, 80804 Munich, Germany.
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Aragona M, Panetta S, Silipigni AM, Romeo DL, Pastura G, Mesiti M, Cascinu S, La Torre F. Nerve growth factor receptor immunoreactivity in breast cancer patients. Cancer Invest 2001; 19:692-7. [PMID: 11577810 DOI: 10.1081/cnv-100106144] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Nerve growth factor receptor (NGF-R) has been shown to have antiproliferative, differentiative, or apoptotic effects on some types of tumor cells, whereas in others it may have mitogenic activity. The immunohistochemical distribution of NGF-R was analyzed in a series of tissue samples from breast cancer patients and its relationship with other clinical and pathological parameters was studied. The distribution of NGF-R was evaluated by immunohistochemistry in frozen tissue samples of 46 breast cancer patients (ME20-4 monoclonal anti-NGF-R). NGF-R immunoreactivity was localized in the plasma membrane of myoepithelial cells, differentiated ducts, neoplastic cells, blood vessels, and nerve fibers in 26 patients (57%). Less differentiated neoplastic tissues were usually NGF-R negative. NGF-R immunoreactivity was associated with estrogen receptor (ER) status (p = 0.02), small tumor dimension (pT) (p = 0.04), low histologic grade (G1-G2) (p < 0.05), old age (p = 0.02), menopause (p = 0.02), and long disease-free survival (DFS) (median follow up 86 months; p = 0.03; independently from ER, pT, age, menopause by multivariate analysis, p = 0.0078). The expression of NGF-R immunoreactivity by breast cancer patients with long DFS may represent a crucial step both in the differentiation status of neoplasia and in the host immune mechanism controlling tumor growth and metastasization.
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Affiliation(s)
- M Aragona
- Istituto di Clinica Oncologia e di Ricerca sui Tumori, Università di Messina, Italy.
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31
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Ricci A, Greco S, Mariotta S, Felici L, Bronzetti E, Cavazzana A, Cardillo G, Amenta F, Bisetti A, Barbolini G. Neurotrophins and neurotrophin receptors in human lung cancer. Am J Respir Cell Mol Biol 2001; 25:439-46. [PMID: 11694449 DOI: 10.1165/ajrcmb.25.4.4470] [Citation(s) in RCA: 116] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The expression of neurotrophins (NTs) and related high- and low-affinity receptors was studied in surgical samples of histologically diagnosed human tumors of the lower respiratory tract. The experiment was conducted with 30 non-small cell lung cancer specimens and in eight small cell lung cancer specimens by Western blot analysis and immunohistochemistry to assess expression and distribution of NT and NT receptor proteins in tissues examined. Immunoblots of homogenates from human tumors displayed binding of anti-nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), and NT-3 antibodies as well as of anti-tyrosine-specific protein kinase (Trk) A, TrkB, and TrkC receptor antibodies, with similar migration characteristics than those displayed by human beta-NGF and proteins from rat brain. A specific immunoreactivity for NTs and NT receptors was demonstrated in vessel walls, stromal fibroblasts, immune cells, and sometimes within neoplastic cell bodies. Approximately 33% of bronchioloalveolar carcinomas exhibited a strong membrane NGF and TrkA immunoreactivity, whereas 46% adenocarcinomas expressed an intense TrkA immunoreactivity but a weak immunostaining for NGF within tumor cells. Moreover, squamous cell carcinomas developed an intense TrkA immunoreactivity only within stroma surrounding neoplastic cells. A faint BDNF and TrkB immunoreactivity was documented in adenocarcinomas, squamous cell carcinomas, and small cell lung cancers. NT-3 and its corresponding TrkC receptor were found in a small number of squamous cell carcinomas within large-size tumor cells. No expression of low-affinity p75 receptor protein was found in tumor cells. The detection of NTs and NT receptor proteins in tumors of the lower respiratory tract suggests that NTs may be involved in controlling growth and differentiation of human lung cancer and/or influencing tumor behavior.
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Affiliation(s)
- A Ricci
- Dipartimento di Scienze Cardiovascolari e Respiratorie, Università La Sapienza, c/o Ospedale Carlo Forlanini, Piazza C. Forlanini 1, 00151 Rome, Italy.
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32
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Páez Pereda M, Missale C, Grübler Y, Arzt E, Schaaf L, Stalla GK. Nerve growth factor and retinoic acid inhibit proliferation and invasion in thyroid tumor cells. Mol Cell Endocrinol 2000; 167:99-106. [PMID: 11000524 DOI: 10.1016/s0303-7207(00)00286-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
NGF has anti-proliferative and anti-invasive effects in neuroendocrine tumors. In the present work we examined the effects of NGF and retinoic acid on cell proliferation and invasion in thyroid carcinoma cells. We found that NGF and retinoic acid do not affect cell proliferation on their own but in combination they produce a strong inhibition. We also found that retinoic acid regulates the matrix metalloproteinase 2 activity and invasion. In contrast, NGF inhibited invasion and reverted the effect of retinoic acid. This effect of NGF is likely mediated by an increase in adhesion to laminin and collagen IV and the inhibition of cell migration. NGF also induced the expression of the p75 NGF receptor. In conclusion, NGF and retinoic acid in combination inhibit proliferation and invasion of thyroid papillary carcinoma cells. These data open the possibility of a potential combined therapy for thyroid papillary carcinomas.
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Affiliation(s)
- M Páez Pereda
- Max Planck Institute of Psychiatry, Department of Endocrinology, Kraepelinstr. 10, 80804, Munich, Germany.
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Colucci-D'Amato GL, D'Alessio A, Califano D, Cali G, Rizzo C, Nitsch L, Santelli G, de Franciscis V. Abrogation of nerve growth factor-induced terminal differentiation by ret oncogene involves perturbation of nuclear translocation of ERK. J Biol Chem 2000; 275:19306-14. [PMID: 10858459 DOI: 10.1074/jbc.275.25.19306] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Oncogenic variants of the receptor tyrosine kinase, Ret, cause formation of tumors of neuroendocrine derivation in the multiple endocrine neoplasia type 2 and, thus, likely interfere with antiproliferative and/or differentiative extracellular signals. Here we took advantage of two rat pheochromocytoma-derived cell lines (PC12/MEN2A and PC12/MEN2B) to investigate whether Ret-induced nerve growth factor (NGF) unresponsiveness might involve impairment of ERK signaling. In fact, these cells, stably transfected with distinct forms of the active ret oncogene, fail to block proliferation, even upon NGF stimulation. In these cells we show the presence of both chronic ERKs activity and high expression levels of MKP-3, an ERK-specific phosphatase. Despite the presence of MKP-3, ERK activity can be further stimulated by NGF, but it fails to translocate into the nucleus and consequently to induce immediate-early gene transcription. Because of the presence of MKP-3, our results suggest the existence of a negative regulatory feedback acting on ERKs as a mechanism responsible for the abrogation of NGF-induced terminal differentiation. Indeed, MKP-3 seems to be implicated in the persistence of ERKs in cell cytoplasm. This interpretation is further supported by the observation that in ret-transfected cells, forced expression of an active form of MEK-1 may overcome this block; it restores transcription from the c-fos promoter, induces translocation of ERKs into the nucleus, and inhibits cell proliferation.
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Affiliation(s)
- G L Colucci-D'Amato
- Centro di Endocrinologia ed Oncologia Sperimentale del CNR "G. Salvatore," c/o Dipartimento di Biologia e Patologia Cellulare e Molecolare, Università di Napoli Federico II, via S. Pansini 5, Naples, Italy
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34
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Páez Pereda M, Ledda MF, Goldberg V, Chervín A, Carrizo G, Molina H, Müller A, Renner U, Podhajcer O, Arzt E, Stalla GK. High levels of matrix metalloproteinases regulate proliferation and hormone secretion in pituitary cells. J Clin Endocrinol Metab 2000; 85:263-9. [PMID: 10634397 DOI: 10.1210/jcem.85.1.6248] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Beside the digestion of the extracellular matrix during tumor invasion and metastasis, more recently, new functions for matrix metalloproteinases (MMPs) have been proposed. We studied the expression and function of these enzymes in pituitary cells. We observed the activities of MMP-2 and MMP-9 together with expression of membrane-type MMP and tissue inhibitor of metalloproteinase-1 in all types of human pituitary adenomas. We found surprisingly high levels of MMP activity and low levels of tissue inhibitor of metalloproteinases, indicating a high level of extracellular matrix-degrading activity in pituitary adenomas. To examine the function of metalloproteinase activity in pituitary cells we used the synthetic MMP inhibitor batimastat. These studies demonstrate that MMPs secreted by pituitary cells can release growth factors anchored to the extracellular matrix that, in turn, control pituitary cell proliferation and hormone secretion. These results define a new additional mechanism for the control of pituitary hormone secretion and indicate new potential therapeutic targets for pituitary adenomas.
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Affiliation(s)
- M Páez Pereda
- Department of Endocrinology, Max Planck Institute of Psychiatry, Munich, Germany
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Pereda MP, Hopfner U, Pagotto U, Renner U, Uhl E, Arzt E, Missale C, Stalla GK. Retinoic acid stimulates meningioma cell adhesion to the extracellular matrix and inhibits invasion. Br J Cancer 1999; 81:381-6. [PMID: 10507760 PMCID: PMC2362913 DOI: 10.1038/sj.bjc.6690705] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Meningiomas are tumours derived from the arachnoid and pia mater. During embryogenesis, these membranes develop from the migrating craniofacial neural crest. We have previously demonstrated that meningiomas have characteristic features of embryonic meninges. Craniofacial neural crest derivatives are affected during normal development and migration by retinoic acid. We speculated, therefore, that meningioma cell migration and invasion would be affected in a similar way. In this study we investigated the mechanisms of invasion and migration in meningiomas and the effects of retinoic acid (RA). We found that low doses of RA inhibit in vitro invasion in meningioma cells, without affecting cell proliferation or viability. The matrix metalloproteinases MMP-2 (72 kDa gelatinase) and MMP-9 (92 kDa gelatinase), which play a key role in invasion in other tumours, are not affected by RA. RA inhibits cell migration on collagen I and fibronectin. A possible mechanism for these effects is provided by the fact that RA strongly stimulates adhesion of meningioma cells to extracellular matrix substrates. As in vitro invasion, migration and decreased adhesion to the extracellular matrix correlate with the clinical manifestation of tumour invasion, we conclude that RA induces a non-invasive phenotype in meningioma cells.
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Affiliation(s)
- M P Pereda
- Max-Planck Institute of Psychiatry, Department of Endocrinology, Munich, Germany
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Miknyoczki SJ, Lang D, Huang L, Klein-Szanto AJ, Dionne CA, Ruggeri BA. Neurotrophins and Trk receptors in human pancreatic ductal adenocarcinoma: expression patterns and effects on in vitro invasive behavior. Int J Cancer 1999; 81:417-27. [PMID: 10209957 DOI: 10.1002/(sici)1097-0215(19990505)81:3<417::aid-ijc16>3.0.co;2-6] [Citation(s) in RCA: 128] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The aggressive and highly metastatic behavior observed in pancreatic ductal adenocarcinoma (PDAC) may be due to autocrine and/or paracrine interactions (tumor/stromal) involving altered expression of peptide growth factors and their corresponding receptors. The neurotrophin (NT) growth factor family and their cognate receptors have been demonstrated to play a role in the invasiveness, chemotactic behavior and tumor cell survival of both neuronal and non-neuronal cancers. We hypothesized that aberrant expression of the NTs and/or the Trk receptors may contribute to the malignant phenotype of PDAC, specifically tumor cell invasiveness, through autocrine and/or paracrine interactions. In this study, we examined the expression of NTs, Trks and p75NGFR by immunohistochemical and in situ hybridization analyses in both normal (n=14) and neoplastic pancreas (n=47) and PDAC-derived cell lines (n=6). Further, we evaluated the effects of various NTs on the in vitro invasive and chemotactic behavior on 6 human PDAC-derived cell lines in a modified Boyden chamber assay. Brain-derived nerve growth factor (BDNF), NT-3, NT-4/5 and Trks A, B and C exhibited diffuse cytoplasmic and membranous immunostaining patterns in both the ducts and the acini of the exocrine pancreas and the islets of the endocrine pancreas of both normal and PDAC specimens. NT expression was primarily within the stromal compartment of the tumor, while Trk expression was weak or absent. We observed a 68%, 64% and 66% increase in the expression of Trks A, B and C, respectively, in the ductal elements of the PDAC samples examined compared with the normal adjacent tissue. Invasiveness of 4 of 6 PDAC cell lines was significantly inhibited (p<0.05) when the cells were incubated with 100 ng/ml NT. However, when select cell lines were incubated with lower concentrations of NT-3 and BDNF (0, 1, 5, 25 and 50 ng/ml), invasiveness was significantly stimulated (p<0.05) through the Matrigel matrix. Collectively, our data suggest the possibility that paracrine and/or autocrine NT-Trk interactions may influence the phenotype (possibly the invasive behavior) of PDAC.
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Affiliation(s)
- S J Miknyoczki
- Department of Pathology, MCP-Hahnemann University, Philadelphia, PA, USA
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Rozengurt E. Autocrine loops, signal transduction, and cell cycle abnormalities in the molecular biology of lung cancer. Curr Opin Oncol 1999; 11:116-22. [PMID: 10188076 DOI: 10.1097/00001622-199903000-00007] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Lung cancers produce a variety of mitogenic neuropeptides and growth factors and express receptors for these signaling peptides leading to autocrine and paracrine loops that stimulate tumor cell proliferation and migration and promote neovascularization. The effects of these autocrine and paracrine factors are mediated by a variety of intracellular signal transduction pathways that ultimately converge on the regulation of cell cycle proteins whose expression and activity are abnormal in lung cancer cells. During the past year, further advances have been made in unraveling autocrine loops, signal transduction pathways, and cell cycle abnormalities in both small cell lung carcinoma (SCLC) and in non-SCLC. In addition, the hunt for novel tumor suppressor genes has continued. As our understanding of the fundamental cell and molecular biology of lung cancer increases, novel possibilities for translational research are emerging for improving the diagnosis, prognosis, and treatment of the disease.
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Affiliation(s)
- E Rozengurt
- Department of Medicine, University of California, Los Angeles 90095-1786, USA
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