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Wang X, Istvanffy R, Ye L, Teller S, Laschinger M, Diakopoulos KN, Görgülü K, Li Q, Ren L, Jäger C, Steiger K, Muckenhuber A, Vilne B, Çifcibaşı K, Reyes CM, Yurteri Ü, Kießler M, Gürçınar IH, Sugden M, Yıldızhan SE, Sezerman OU, Çilingir S, Süyen G, Reichert M, Schmid RM, Bärthel S, Oellinger R, Krüger A, Rad R, Saur D, Algül H, Friess H, Lesina M, Ceyhan GO, Demir IE. Phenotype screens of murine pancreatic cancer identify a Tgf-α-Ccl2-paxillin axis driving human-like neural invasion. J Clin Invest 2023; 133:e166333. [PMID: 37607005 PMCID: PMC10617783 DOI: 10.1172/jci166333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 08/17/2023] [Indexed: 08/23/2023] Open
Abstract
Solid cancers like pancreatic ductal adenocarcinoma (PDAC), a type of pancreatic cancer, frequently exploit nerves for rapid dissemination. This neural invasion (NI) is an independent prognostic factor in PDAC, but insufficiently modeled in genetically engineered mouse models (GEMM) of PDAC. Here, we systematically screened for human-like NI in Europe's largest repository of GEMM of PDAC, comprising 295 different genotypes. This phenotype screen uncovered 2 GEMMs of PDAC with human-like NI, which are both characterized by pancreas-specific overexpression of transforming growth factor α (TGF-α) and conditional depletion of p53. Mechanistically, cancer-cell-derived TGF-α upregulated CCL2 secretion from sensory neurons, which induced hyperphosphorylation of the cytoskeletal protein paxillin via CCR4 on cancer cells. This activated the cancer migration machinery and filopodia formation toward neurons. Disrupting CCR4 or paxillin activity limited NI and dampened tumor size and tumor innervation. In human PDAC, phospho-paxillin and TGF-α-expression constituted strong prognostic factors. Therefore, we believe that the TGF-α-CCL2-CCR4-p-paxillin axis is a clinically actionable target for constraining NI and tumor progression in PDAC.
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Affiliation(s)
- Xiaobo Wang
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Rouzanna Istvanffy
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Neural Influences in Cancer (NIC) International Research Consortium
| | - Linhan Ye
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Pain Clinic, Department of Anesthesiology, First Affiliated Hospital of USTC (Anhui Provincial Hospital), Division of Life Sciences and Medicine, University of Science and Technology of China (USTC), Hefei, China
| | - Steffen Teller
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Melanie Laschinger
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
| | - Kalliope N. Diakopoulos
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Department of Internal Medicine II & Comprehensive Cancer Center Munich, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
| | - Kıvanç Görgülü
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Department of Internal Medicine II & Comprehensive Cancer Center Munich, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
| | - Qiaolin Li
- Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Lei Ren
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Carsten Jäger
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Katja Steiger
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Comparative Experimental Pathology and Institute of Pathology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Alexander Muckenhuber
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Comparative Experimental Pathology and Institute of Pathology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Baiba Vilne
- Bioinformatics laboratory, Riga Stradins University, Riga, Latvia
| | - Kaan Çifcibaşı
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Carmen Mota Reyes
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Neural Influences in Cancer (NIC) International Research Consortium
| | - Ümmügülsüm Yurteri
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Maximilian Kießler
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Ibrahim Halil Gürçınar
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Maya Sugden
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | | | | | - Sümeyye Çilingir
- Department of Physiology, Acibadem Mehmet Ali Aydinlar University, School of Medicine, Istanbul, Turkey
| | - Güldal Süyen
- Department of Physiology, Acibadem Mehmet Ali Aydinlar University, School of Medicine, Istanbul, Turkey
| | - Maximilian Reichert
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
- Department of Internal Medicine II, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
| | - Roland M. Schmid
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
- Department of Internal Medicine II, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
| | - Stefanie Bärthel
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Institute of Translational Cancer Research (TranslaTUM) and Experimental Cancer Therapy
| | - Rupert Oellinger
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Institute of Molecular Oncology and Functional Genomics
| | - Achim Krüger
- Institute of Experimental Oncology and Therapy Research, School of Medicine, Technical University Munich, Munich, Germany
| | - Roland Rad
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
- Institute of Molecular Oncology and Functional Genomics
| | - Dieter Saur
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
- Institute of Translational Cancer Research (TranslaTUM) and Experimental Cancer Therapy
| | - Hana Algül
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Department of Internal Medicine II & Comprehensive Cancer Center Munich, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
| | - Helmut Friess
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Neural Influences in Cancer (NIC) International Research Consortium
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
| | - Marina Lesina
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Department of Internal Medicine II & Comprehensive Cancer Center Munich, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
| | - Güralp Onur Ceyhan
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- Neural Influences in Cancer (NIC) International Research Consortium
- Department of General Surgery, HPB-Unit, School of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Ihsan Ekin Demir
- Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
- CRC 1321 Modelling and Targeting Pancreatic Cancer, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Neural Influences in Cancer (NIC) International Research Consortium
- German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
- Department of General Surgery, HPB-Unit, School of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
- Else Kröner Clinician Scientist Professor for Translational Pancreatic Surgery, Technical University of Munich, Munich, Germany
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Gao Y, Wang Y, Xu L, Xie X, Zhu L, Wang F. CircRTN1 acts as a miR-431-5p sponge to promote thyroid cancer progression by upregulating TGFA. Hormones (Athens) 2022; 21:611-623. [PMID: 35804263 DOI: 10.1007/s42000-022-00378-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 05/27/2022] [Indexed: 11/29/2022]
Abstract
PURPOSE This study aimed to explore the role and underlying mechanism of circular RNA (circRNA) reticulon 1 (circRTN1) in thyroid cancer (TC). METHODS The expression levels of circRTN1, microRNA-431-5p (miR-431-5p), and transforming growth factor-alpha (TGFA) mRNA were measured by quantitative real-time PCR (qRT-PCR). Cell proliferation was evaluated using colony formation and 5-ethynyl-2'-deoxyuridine (EdU) assays. Cell apoptosis was analyzed using flow cytometry. Cell migration and invasion were measured using the transwell assay. The protein levels of ki-67, Bax, matrix metalloproteinase 2 (MMP-2), and TGFA were detected using Western blot assay. The interaction between miR-431-5p and circRTN1 or TGFA was verified by dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay. The effect of circRTN1on TC in vivo was explored via xenograft tumor assay. RESULTS The expression of circRTN1 was increased in TC tissues and cells. Knockdown of circRTN1 suppressed TC cell proliferation, migration, and invasion, and increased cell apoptosis. MiR-431-5p was a target of circRTN1, and miR-431-5p downregulation reversed the role of circRTN1 knockdown in TC cells. TGFA was identified as a direct target of miR-431-5p, and miR-431-5p exerted the anti-tumor role in TC cells by downregulating TGFA. Moreover, circRTN1 sponged miR-431-5p to regulate TGFA expression. Furthermore, circRTN1 knockdown inhibited tumor growth in vivo. CONCLUSION CircRTN1 acted as a cancer-promoting circRNA in TC by regulating the miR-431-5p/TGFA axis, providing a potential therapeutic strategy for TC treatment.
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Affiliation(s)
- Yu Gao
- Department of Radiation Oncology, the First Affiliated Hospital of Anhui Medical University, No.218, Jixi Road, Hefei, 230022, Anhui, China
| | - Yichun Wang
- Department of Radiation Oncology, the First Affiliated Hospital of Anhui Medical University, No.218, Jixi Road, Hefei, 230022, Anhui, China
| | - Lei Xu
- Department of Radiation Oncology, the First Affiliated Hospital of Anhui Medical University, No.218, Jixi Road, Hefei, 230022, Anhui, China
| | - Xiaoque Xie
- Department of Radiation Oncology, the First Affiliated Hospital of Anhui Medical University, No.218, Jixi Road, Hefei, 230022, Anhui, China
| | - Liyang Zhu
- Department of Radiation Oncology, the First Affiliated Hospital of Anhui Medical University, No.218, Jixi Road, Hefei, 230022, Anhui, China
| | - Fan Wang
- Department of Radiation Oncology, the First Affiliated Hospital of Anhui Medical University, No.218, Jixi Road, Hefei, 230022, Anhui, China.
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Sun Y, Miao X, Zhu L, Liu J, Lin Y, Xiang G, Wu X, Wang X, Ni Z, Li S. Autocrine TGF-alpha is associated with Benzo(a)pyrene-induced mucus production and MUC5AC expression during allergic asthma. Ecotoxicol Environ Saf 2022; 241:113833. [PMID: 36068759 DOI: 10.1016/j.ecoenv.2022.113833] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
OBJECTS Benzo(a)pyrene (BaP), an environmental pollutant, is present in high concentrations in urban smog and cigarette smoke and has been reported to promote high mucin 5AC (MUC5AC) expression. Epithelium-derived inflammatory cytokines are considered an important modulator of mucus oversecretion and MUC5AC overexpression. Here, we investigated whether the effect of BaP on MUC5AC overexpression was associated with cytokine autocrine activity in vivo and in vitro. METHODS In vivo, BALB/c mice were treated with ovalbumin (OVA) in the presence or absence of BaP. Allergy-induced mucus production was assessed by Alcian Blue Periodic acid Schiff (AB-PAS) staining. The human airway epithelial cell line NCI-H292 was used in vitro. MUC5AC and transforming growth factor (TGF)-α mRNA levels were assessed with real-time quantitative PCR. The concentration of cytokines was measured by ELISA. The MUC5AC, p-ERK, ERK, p-EGFR and EGFR proteins were detected by Western blotting in cells or by immunohistochemistry in mouse lungs. Small-interfering RNAs were used for gene silencing. RESULTS TGF-α was overproduced in the supernatant of NCI-H292 cells treated with BaP. Knockdown of TGF-α expression inhibited the BaP-induced increase in MUC5AC expression and subsequent activation of the EGFR-ERK signalling pathway. Knocking down aryl hydrocarbon receptor (AhR) expression or treatment with an ROS inhibitor (N-acetyl-L-cysteine) could relieve the TGF-α secretion induced by BaP in epithelial cells. In an animal study, coexposure to BaP with OVA increased mucus production, MUC5AC expression and ROS-EGFR-ERK activation in the lung as well as TGF-α levels in bronchoalveolar lavage fluid (BALF). Furthermore, the concentration of TGF-α in BALF was correlated with MUC5AC mRNA levels. Additionally, TGF-α expression was found to be positively correlated with MUC5AC expression in the airway epithelial cells of smokers. Compared with non-smoker asthma patients, TGF-α serum levels were also elevated in smoker asthma patients. CONCLUSION Autocrine TGF-α was associated with BaP-induced MUC5AC expression in vitro and in vivo. BaP induced TGF-α secretion by activating AhR and producing ROS, which led to activation of the EGFR-ERK pathway.
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Affiliation(s)
- Yipeng Sun
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
| | - Xiayi Miao
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China
| | - Linyun Zhu
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China
| | - Jinjin Liu
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China
| | - Yuhua Lin
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China
| | - Guiling Xiang
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
| | - Xiaodan Wu
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
| | - Xiaobiao Wang
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China.
| | - Zhenhua Ni
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China; Central lab, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China.
| | - Shanqun Li
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China.
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Akimov V, Fehling-Kaschek M, Barrio-Hernandez I, Puglia M, Bunkenborg J, Nielsen MM, Timmer J, Dengjel J, Blagoev B. Magnitude of Ubiquitination Determines the Fate of Epidermal Growth Factor Receptor Upon Ligand Stimulation. J Mol Biol 2021; 433:167240. [PMID: 34508725 DOI: 10.1016/j.jmb.2021.167240] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 08/17/2021] [Accepted: 09/01/2021] [Indexed: 12/23/2022]
Abstract
Receptor tyrosine kinases (RTK) bind growth factors and are critical for cell proliferation and differentiation. Their dysregulation leads to a loss of growth control, often resulting in cancer. Epidermal growth factor receptor (EGFR) is the prototypic RTK and can bind several ligands exhibiting distinct mitogenic potentials. Whereas the phosphorylation on individual EGFR sites and their roles for downstream signaling have been extensively studied, less is known about ligand-specific ubiquitination events on EGFR, which are crucial for signal attenuation and termination. We used a proteomics-based workflow for absolute quantitation combined with mathematical modeling to unveil potentially decisive ubiquitination events on EGFR from the first 30 seconds to 15 minutes of stimulation. Four ligands were used for stimulation: epidermal growth factor (EGF), heparin-binding-EGF like growth factor, transforming growth factor-α and epiregulin. Whereas only little differences in the order of individual ubiquitination sites were observed, the overall amount of modified receptor differed depending on the used ligand, indicating that absolute magnitude of EGFR ubiquitination, and not distinctly regulated ubiquitination sites, is a major determinant for signal attenuation and the subsequent cellular outcomes.
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Affiliation(s)
- Vyacheslav Akimov
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Mirjam Fehling-Kaschek
- Institut of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Inigo Barrio-Hernandez
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Michele Puglia
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Jakob Bunkenborg
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Mogens M Nielsen
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Jens Timmer
- Institut of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany; Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Schänzlestr. 18, 79104 Freiburg, Germany
| | - Jörn Dengjel
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland.
| | - Blagoy Blagoev
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
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García-Alonso S, Romero-Pérez I, Gandullo-Sánchez L, Chinchilla L, Ocaña A, Montero JC, Pandiella A. Altered proTGFα/cleaved TGFα ratios offer new therapeutic strategies in renal carcinoma. J Exp Clin Cancer Res 2021; 40:256. [PMID: 34399807 PMCID: PMC8365933 DOI: 10.1186/s13046-021-02051-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 07/26/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Treatment of renal cancer has significantly improved with the arrival to the clinic of kinase inhibitors and immunotherapies. However, the disease is still incurable in advanced stages. The fact that several approved inhibitors for kidney cancer target receptor tyrosine kinases (RTKs) suggests that these proteins play a critical role in the pathophysiology of the disease. Based on these precedents, we decided to explore whether RTKs other than those targeted by approved drugs, contribute to the development of kidney cancer. METHODS The activation status of 49 RTKs in 44 paired samples of normal and tumor kidney tissue was explored using antibody arrays, with validation by western blotting. Genetic and pharmacologic approaches were followed to study the biological implications of targeting the epidermal growth factor receptor (EGFR) and its ligand Transforming Growth Factor-α (TGFα). RESULTS Activation of the EGFR was found in a substantial number of tumors. Moreover, kidney tumors expressed elevated levels of TGFα. Down-regulation of EGFR or TGFα using RNAi or their pharmacological targeting with blocking antibodies resulted in inhibition of the proliferation of in vitro cellular models of renal cancer. Importantly, differences in the molecular forms of TGFα expressed by tumors and normal tissues were found. In fact, tumor TGFα was membrane anchored, while that expressed by normal kidney tissue was proteolytically processed. CONCLUSIONS The EGFR-TGFα axis plays a relevant role in the pathophysiology of kidney cancer. This study unveils a distinctive feature in renal cell carcinomas, which is the presence of membrane-anchored TGFα. That characteristic could be exploited therapeutically to act on tumors expressing transmembrane TGFα, for example, with antibody drug conjugates that could recognize the extracellular region of that protein.
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Affiliation(s)
- Sara García-Alonso
- Instituto de Biología Molecular y Celular del Cáncer, CSIC and CIBERONC. Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
| | - Inés Romero-Pérez
- Instituto de Biología Molecular y Celular del Cáncer, CSIC and CIBERONC. Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
| | - Lucía Gandullo-Sánchez
- Instituto de Biología Molecular y Celular del Cáncer, CSIC and CIBERONC. Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
| | - Luis Chinchilla
- Pathology Service, University Hospital and IBSAL, Salamanca, Spain
| | | | - Juan Carlos Montero
- Instituto de Biología Molecular y Celular del Cáncer, CSIC and CIBERONC. Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
| | - Atanasio Pandiella
- Instituto de Biología Molecular y Celular del Cáncer, CSIC and CIBERONC. Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain.
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Tao LJ, Pan XY, Wang JW, Zhang L, Tao LS, Liang CZ. Circular RNA circANKS1B acts as a sponge for miR-152-3p and promotes prostate cancer progression by upregulating TGF-α expression. Prostate 2021; 81:271-278. [PMID: 33556191 DOI: 10.1002/pros.24102] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/30/2020] [Accepted: 12/31/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND A growing number of studies indicate that circular RNAs (circRNAs) play critical roles in human diseases, and show great potential as biomarkers and therapeutic targets. This study aimed to investigate the expression and function of circANKS1B in prostate cancer (PC). METHODS The expression of circANKS1B and miR-152-3p was analyzed by real-time quantitative reverse-transcription polymerase chain reaction (qRT-PCR). Cell migration and invasion were measured using a transwell assay. The interaction between circANKS1B and miR-152-3p was confirmed by a dual-luciferase reporter gene assay. Rescue experiments were conducted to determine whether circANKS1B regulated the invasion of PC cells via the circANKS1B-miR-152-3p-TGF-α pathway. RESULTS The expression of circANKS1B was markedly upregulated in both PC cells and tissues. Moreover, high circANKS1B expression was associated with poor prognosis in PC patients. Dual-luciferase reporter assay indicated that circANKS1B directly bound to miR-152-3p. Furthermore, circANKS1B negatively regulated miR-152-3p expression. Knockdown of circANKS1B markedly suppressed cell migration and invasion and TGF-α expression in PC cells, whereas the effects of circANKS1B silencing were reversed by miR-152-3p deficiency. In addition, the impact of miR-152-3p silencing on invasion of circANKS1B-deficient PC cells was also abrogated by TGF-α deficiency. Overall, circANKS1B acts as a sponge for miR-152-3p to promote PC progression by upregulating TGF-α expression. CONCLUSION Our findings reveal that circANKS1B may be a potential prognostic biomarker and therapeutic target for PC.
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Affiliation(s)
- Liang-Jun Tao
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Xin-Yuan Pan
- Department of Ophthalmology, The Second People's Hospital of Wuhu, Wuhu, Anhui, China
| | - Jia-Wei Wang
- Department of Urology, The Second People's Hospital of Wuhu, Wuhu, Anhui, China
| | - Li Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
| | - Ling-Song Tao
- Department of Urology, The Second People's Hospital of Wuhu, Wuhu, Anhui, China
| | - Chao-Zhao Liang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Institute of Urology, Anhui Medical University, Hefei, Anhui, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, Anhui, China
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Bezamat M, Souza JF, Silva FMF, Corrêa EG, Fatturi AL, Brancher JA, Carvalho FM, Cavallari T, Bertolazo L, Machado-Souza C, Koruyucu M, Bayram M, Racic A, Harrison BM, Sweat YY, Letra A, Studen-Pavlovich D, Seymen F, Amendt B, Werneck RI, Costa MC, Modesto A, Vieira AR. Gene-environment interaction in molar-incisor hypomineralization. PLoS One 2021; 16:e0241898. [PMID: 33406080 PMCID: PMC7787379 DOI: 10.1371/journal.pone.0241898] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/22/2020] [Indexed: 01/12/2023] Open
Abstract
Molar incisor hypomineralization (MIH) is an enamel condition characterized by lesions ranging in color from white to brown which present rapid caries progression, and mainly affects permanent first molars and incisors. These enamel defects usually occur when there are disturbances during the mineralization or maturation stage of amelogenesis. Both genetic and environmental factors have been suggested to play roles in MIH’s development, but no conclusive risk factors have shown the source of the disease. During head and neck development, the interferon regulatory factor 6 (IRF6) gene is involved in the structure formation of the oral and maxillofacial regions, and the transforming growth factor alpha (TGFA) is an essential cell regulator, acting during proliferation, differentiation, migration and apoptosis. In this present study, it was hypothesized that these genes interact and contribute to predisposition of MIH. Environmental factors affecting children that were 3 years of age or older were also hypothesized to play a role in the disease etiology. Those factors included respiratory issues, malnutrition, food intolerance, infection of any sort and medication intake. A total of 1,065 salivary samples from four different cohorts were obtained, and DNA was extracted from each sample and genotyped for nine different single nucleotide polymorphisms. Association tests and logistic regression implemented in PLINK were used for analyses. A potential interaction between TGFA rs930655 with all markers tested in the cohort from Turkey was identified. These interactions were not identified in the remaining cohorts. Associations (p<0.05) between the use of medication after three years of age and MIH were also found, suggesting that conditions acquired at the age children start to socialize might contribute to the development of MIH.
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Affiliation(s)
- Mariana Bezamat
- Department of Oral Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Juliana F. Souza
- Department of Stomatology, Federal University of Paraná, Curitiba, State of Paraná, Brazil
| | - Fernanda M. F. Silva
- Department of Pediatric Dentistry and Orthodontics, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Emilly G. Corrêa
- Graduate Program of Dentistry, Pontifical Catholic University of Paraná, Curitiba, State of Paraná, Brazil
| | - Aluhe L. Fatturi
- Department of Stomatology, Federal University of Paraná, Curitiba, State of Paraná, Brazil
| | - João A. Brancher
- Graduate Program of Dentistry, Positivo University, Curitiba, State of Pará, Brazil
| | - Flávia M. Carvalho
- Department of Genetics, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tayla Cavallari
- Graduate Program of Dentistry, Pontifical Catholic University of Paraná, Curitiba, State of Paraná, Brazil
| | - Laís Bertolazo
- Graduate Program of Dentistry, Pontifical Catholic University of Paraná, Curitiba, State of Paraná, Brazil
| | - Cleber Machado-Souza
- Graduate Program of Applied Biotechnology to Child and Adolescent Health, Pequeno Príncipe College, Curitiba, State of Pará, Brazil
| | - Mine Koruyucu
- Department of Pedodontics, Istanbul University, Istanbul, Turkey
| | - Merve Bayram
- Department of Pedodontics, Medipol Istanbul University, Istanbul, Turkey
| | - Andrea Racic
- Department of Oral Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Benjamin M. Harrison
- Department of Oral Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Yan Y. Sweat
- Craniofacial Anomalies Research Center and Department of Orthodontics, College of Dentistry, The University of Iowa, Iowa City, Iowa, United States of America
| | - Ariadne Letra
- Department of Diagnostic and Biomedical Sciences, and Center for Craniofacial Research, UTHealth School of Dentistry at Houston, Houston, Texas, United States of America
| | - Deborah Studen-Pavlovich
- Department of Pediatric Dentistry, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Figen Seymen
- Department of Pedodontics, Istanbul University, Istanbul, Turkey
| | - Brad Amendt
- Craniofacial Anomalies Research Center and Department of Orthodontics, College of Dentistry, The University of Iowa, Iowa City, Iowa, United States of America
| | - Renata I. Werneck
- Graduate Program of Dentistry, Pontifical Catholic University of Paraná, Curitiba, State of Paraná, Brazil
| | - Marcelo C. Costa
- Department of Pediatric Dentistry and Orthodontics, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Adriana Modesto
- Department of Pediatric Dentistry, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Alexandre R. Vieira
- Department of Oral Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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Rathore OS, Silva RD, Ascensão-Ferreira M, Matos R, Carvalho C, Marques B, Tiago MN, Prudêncio P, Andrade RP, Roignant JY, Barbosa-Morais NL, Martinho RG. NineTeen Complex-subunit Salsa is required for efficient splicing of a subset of introns and dorsal-ventral patterning. RNA 2020; 26:1935-1956. [PMID: 32963109 PMCID: PMC7668242 DOI: 10.1261/rna.077446.120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
The NineTeen Complex (NTC), also known as pre-mRNA-processing factor 19 (Prp19) complex, regulates distinct spliceosome conformational changes necessary for splicing. During Drosophila midblastula transition, splicing is particularly sensitive to mutations in NTC-subunit Fandango, which suggests differential requirements of NTC during development. We show that NTC-subunit Salsa, the Drosophila ortholog of human RNA helicase Aquarius, is rate-limiting for splicing of a subset of small first introns during oogenesis, including the first intron of gurken Germline depletion of Salsa and splice site mutations within gurken first intron impair both adult female fertility and oocyte dorsal-ventral patterning, due to an abnormal expression of Gurken. Supporting causality, the fertility and dorsal-ventral patterning defects observed after Salsa depletion could be suppressed by the expression of a gurken construct without its first intron. Altogether, our results suggest that one of the key rate-limiting functions of Salsa during oogenesis is to ensure the correct expression and efficient splicing of the first intron of gurken mRNA. Retention of gurken first intron compromises the function of this gene most likely because it undermines the correct structure and function of the transcript 5'UTR.
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Affiliation(s)
- Om Singh Rathore
- Center for Biomedical Research (CBMR), Universidade do Algarve, Faro, 8005-139 Portugal
| | - Rui D Silva
- Center for Biomedical Research (CBMR), Universidade do Algarve, Faro, 8005-139 Portugal
| | - Mariana Ascensão-Ferreira
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Ricardo Matos
- Center for Biomedical Research (CBMR), Universidade do Algarve, Faro, 8005-139 Portugal
| | - Célia Carvalho
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Bruno Marques
- Center for Biomedical Research (CBMR), Universidade do Algarve, Faro, 8005-139 Portugal
| | - Margarida N Tiago
- Center for Biomedical Research (CBMR), Universidade do Algarve, Faro, 8005-139 Portugal
| | - Pedro Prudêncio
- Center for Biomedical Research (CBMR), Universidade do Algarve, Faro, 8005-139 Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Raquel P Andrade
- Center for Biomedical Research (CBMR), Universidade do Algarve, Faro, 8005-139 Portugal
- Department of Medicine and Biomedical Sciences and Algarve Biomedical Center, Universidade do Algarve, 8005-139 Faro, Portugal
| | - Jean-Yves Roignant
- Center for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, CH-1015 Lausanne, Switzerland
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University Mainz, 55128 Mainz, Germany
| | - Nuno L Barbosa-Morais
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Rui Gonçalo Martinho
- Center for Biomedical Research (CBMR), Universidade do Algarve, Faro, 8005-139 Portugal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
- Department of Medical Sciences and Institute for Biomedicine (iBiMED), Universidade de Aveiro, 3810-193 Aveiro, Portugal
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Fang R, Haxaire C, Otero M, Lessard S, Weskamp G, McIlwain DR, Mak TW, Lichtenthaler SF, Blobel CP. Role of iRhoms 1 and 2 in Endochondral Ossification. Int J Mol Sci 2020; 21:ijms21228732. [PMID: 33227998 PMCID: PMC7699240 DOI: 10.3390/ijms21228732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 12/18/2022] Open
Abstract
Growth of the axial and appendicular skeleton depends on endochondral ossification, which is controlled by tightly regulated cell–cell interactions in the developing growth plates. Previous studies have uncovered an important role of a disintegrin and metalloprotease 17 (ADAM17) in the normal development of the mineralized zone of hypertrophic chondrocytes during endochondral ossification. ADAM17 regulates EGF-receptor signaling by cleaving EGFR-ligands such as TGFα from their membrane-anchored precursor. The activity of ADAM17 is controlled by two regulatory binding partners, the inactive Rhomboids 1 and 2 (iRhom1, 2), raising questions about their role in endochondral ossification. To address this question, we generated mice lacking iRhom2 (iR2−/−) with floxed alleles of iRhom1 that were specifically deleted in chondrocytes by Col2a1-Cre (iR1∆Ch). The resulting iR2−/−iR1∆Ch mice had retarded bone growth compared to iR2−/− mice, caused by a significantly expanded zone of hypertrophic mineralizing chondrocytes in the growth plate. Primary iR2−/−iR1∆Ch chondrocytes had strongly reduced shedding of TGFα and other ADAM17-dependent EGFR-ligands. The enlarged zone of mineralized hypertrophic chondrocytes in iR2−/−iR1∆Ch mice closely resembled the abnormal growth plate in A17∆Ch mice and was similar to growth plates in Tgfα−/− mice or mice with EGFR mutations. These data support a model in which iRhom1 and 2 regulate bone growth by controlling the ADAM17/TGFα/EGFR signaling axis during endochondral ossification.
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Affiliation(s)
- Renpeng Fang
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha 410008, China;
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery at Weill Cornell Medicine, New York, NY 10021, USA; (C.H.); (G.W.)
| | - Coline Haxaire
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery at Weill Cornell Medicine, New York, NY 10021, USA; (C.H.); (G.W.)
| | - Miguel Otero
- Orthopedic Soft Tissue Research Program, Hospital for Special Surgery at Weill Cornell Medicine, New York, NY 10021, USA; (M.O.); (S.L.)
| | - Samantha Lessard
- Orthopedic Soft Tissue Research Program, Hospital for Special Surgery at Weill Cornell Medicine, New York, NY 10021, USA; (M.O.); (S.L.)
| | - Gisela Weskamp
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery at Weill Cornell Medicine, New York, NY 10021, USA; (C.H.); (G.W.)
| | - David R. McIlwain
- Baxter Laboratory in Stem Cell Biology, Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA;
| | - Tak W. Mak
- Campbell Family Institute for Breast Cancer Research, Ontario Cancer Institute, University Health Network, Toronto, ON M5G 2M9, Canada;
| | - Stefan F. Lichtenthaler
- German Center for Neurodegenerative Diseases (DZNE), 81377 Munich, Germany;
- Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), 81377 Munich, Germany
- Institute for Advanced Study, Technische Universität München, 85748 Garching, Germany
| | - Carl P. Blobel
- Arthritis and Tissue Degeneration Program, Hospital for Special Surgery at Weill Cornell Medicine, New York, NY 10021, USA; (C.H.); (G.W.)
- Institute for Advanced Study, Technische Universität München, 85748 Garching, Germany
- Department of Medicine, Department of Biophysics, Physiology and Systems Biology, Weill Cornell Medicine, New York, NY 10021, USA
- Correspondence: ; Tel.: +212-606-1429; Fax: +212-774-2560
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Stocco E, Barbon S, Tortorella C, Macchi V, De Caro R, Porzionato A. Growth Factors in the Carotid Body-An Update. Int J Mol Sci 2020; 21:ijms21197267. [PMID: 33019660 PMCID: PMC7594035 DOI: 10.3390/ijms21197267] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 09/27/2020] [Accepted: 09/27/2020] [Indexed: 12/19/2022] Open
Abstract
The carotid body may undergo plasticity changes during development/ageing and in response to environmental (hypoxia and hyperoxia), metabolic, and inflammatory stimuli. The different cell types of the carotid body express a wide series of growth factors and corresponding receptors, which play a role in the modulation of carotid body function and plasticity. In particular, type I cells express nerve growth factor, brain-derived neurotrophic factor, neurotrophin 3, glial cell line-derived neurotrophic factor, ciliary neurotrophic factor, insulin-like-growth factor-I and -II, basic fibroblast growth factor, epidermal growth factor, transforming growth factor-α and -β, interleukin-1β and -6, tumor necrosis factor-α, vascular endothelial growth factor, and endothelin-1. Many specific growth factor receptors have been identified in type I cells, indicating autocrine/paracrine effects. Type II cells may also produce growth factors and express corresponding receptors. Future research will have to consider growth factors in further experimental models of cardiovascular, metabolic, and inflammatory diseases and in human (normal and pathologic) samples. From a methodological point of view, microarray and/or proteomic approaches would permit contemporary analyses of large groups of growth factors. The eventual identification of physical interactions between receptors of different growth factors and/or neuromodulators could also add insights regarding functional interactions between different trophic mechanisms.
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Senthilkumar S, Raveendran R, Madhusoodanan S, Sundar M, Shankar SS, Sharma S, Sundararajan V, Dan P, Sheik Mohideen S. Developmental and behavioural toxicity induced by acrylamide exposure and amelioration using phytochemicals in Drosophila melanogaster. J Hazard Mater 2020; 394:122533. [PMID: 32279006 DOI: 10.1016/j.jhazmat.2020.122533] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 03/11/2020] [Accepted: 03/11/2020] [Indexed: 06/11/2023]
Abstract
Acrylamide, an environmental pollutant, is known to occur in food substances cooked at high temperatures. Studies on various models indicate acrylamide to cause several physiological conditions such as neuro- and reproductive toxicity, and carcinogenesis. In our study, exposure of Drosophila melanogaster (Oregon K strain) to acrylamide via their diet resulted in a concentration and time-dependent mortality, while the surviving flies exhibited significant locomotor deficits, most likely due to oxidative stress-induced neuronal damage. Also, Drosophila embryos exhibited signs of developmental toxicity as evidenced by the alteration in the migration of border cells and cluster cells during the developmental stages, concomitant to modulation in expression of gurken and oskar genes. Curcumin, a known antioxidant has been widely studied for its neuroprotective effects against acrylamide; however; very few studies focus on thymoquinone for its role against food toxicant. Our research focuses on the toxicity elicited by acrylamide and the ability of the antioxidants: thymoquinone, curcumin and combination of thereof, in reversing the same.
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Affiliation(s)
- Swetha Senthilkumar
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Tamil Nadu, India
| | - Rakshika Raveendran
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Tamil Nadu, India
| | - Sayooj Madhusoodanan
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Tamil Nadu, India
| | - Malini Sundar
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Tamil Nadu, India
| | - Siddhi Shree Shankar
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Tamil Nadu, India
| | - Suyash Sharma
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Tamil Nadu, India
| | - Vignesh Sundararajan
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Tamil Nadu, India
| | - Pallavi Dan
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Tamil Nadu, India
| | - Sahabudeen Sheik Mohideen
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Tamil Nadu, India.
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12
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Ding L, Yin Y, Hou Y, Jiang H, Zhang J, Dai Z, Zhang G. microRNA-214-3p Suppresses Ankylosing Spondylitis Fibroblast Osteogenesis via BMP-TGF β Axis and BMP2. Front Endocrinol (Lausanne) 2020; 11:609753. [PMID: 33935961 PMCID: PMC8082363 DOI: 10.3389/fendo.2020.609753] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 12/21/2020] [Indexed: 11/13/2022] Open
Abstract
Recent investigations suggest microRNAs (miRs) exert functions in fibroblast osteogenesis in ankylosing spondylitis (AS), an inflammatory rheumatic disease. But the mechanism of miR-214-3p in osteogenic differentiation in AS is not clearly understood yet. In this study, fibroblasts were obtained from the capsular ligament of patients with AS and femoral neck fracture and cultured for osteogenic induction and identified. The roles of miR-214-3p and bone morphogenic protein 2 (BMP2) in AS fibroblast osteogenesis were assessed via gain- and loss-of-function, alizarin red S staining, and alkaline phosphatase (ALP) detection. Levels of miR-214-3p, BMP2, osteogenic differentiation-related proteins, and BMP-TGFβ axis-related proteins were further measured. Consequently, miR-214-3p was downregulated in AS fibroblasts, with enhanced ALP activity and calcium nodules, which were reversed by miR-214-3p overexpression. BMP2 was a target gene of miR-214-3p and promoted AS fibroblast osteogenesis by activating BMP-TGFβ axis, while miR-214-3p inhibited AS fibroblast osteogenesis by targeting BMP2. Together, miR-214-3p could prevent AS fibroblast osteogenic differentiation by targeting BMP2 and blocking BMP-TGFβ axis. This study may offer a novel insight for AS treatment.
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Affiliation(s)
- Lixiang Ding
- Department of Spine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- *Correspondence: Lixiang Ding, ; Genai Zhang,
| | - Yukun Yin
- Department of Traditional Chinese Medicine, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yu Hou
- Department of Spine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Haoran Jiang
- Department of Spine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Ji Zhang
- Department of Spine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Zhong Dai
- Department of General Medicine, Huanxing Cancer Hospital, Beijing, China
| | - Genai Zhang
- Department of Spine, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- *Correspondence: Lixiang Ding, ; Genai Zhang,
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Poteet E, Liu D, Liang Z, Van Buren G, Chen C, Yao Q. Mesothelin and TGF-α predict pancreatic cancer cell sensitivity to EGFR inhibitors and effective combination treatment with trametinib. PLoS One 2019; 14:e0213294. [PMID: 30921351 PMCID: PMC6438513 DOI: 10.1371/journal.pone.0213294] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 02/18/2019] [Indexed: 01/12/2023] Open
Abstract
Clinical trials of EGFR inhibitors in combination with gemcitabine for the treatment of pancreatic ductal adenocarcinoma (PDAC) have generated mixed results partially due to the poorly defined effectiveness of EGFR inhibitors in PDAC. Here, we studied a panel of PDAC cell lines to compare the IC50s of the EGFR inhibitors gefitinib and cetuximab. We found that gefitinib induced biphasic inhibition in over 50% of PDAC cells, with the initial growth inhibition occurring at nanomolar concentrations and a second growth inhibition occurring outside the clinical range. In contrast to gefitinib, cetuximab produced a single phase growth inhibition in a subset of PDAC cells. Using this sensitivity data, we screened for correlations between cell morphology proteins and EGFR ligands to EGFR inhibitor sensitivity, and found that mesothelin and the EGFR ligand TGF-α have a strong correlation to gefitinib and cetuximab sensitivity. Analysis of downstream signaling pathways indicated that plc-γ1 and c-myc were consistently inhibited by EGFR inhibitor treatment in sensitive cell lines. While an inconsistent additive effect was observed with either cetuximab or gefitinib in combination with gemcitabine, the cell pathway data indicated consistent ERK activation, leading us to pursue EGFR inhibitors in combination with trametinib, a MEK1/2 inhibitor. Both cetuximab and gefitinib in combination with trametinib produced an additive effect in all EGFR sensitive cell lines. Our results indicate that mesothelin and TGF-α can predict PDAC sensitivity to EGFR inhibitors and a combination of EGFR inhibitors with trametinib could be a novel effective treatment for PDAC.
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Affiliation(s)
- Ethan Poteet
- Michael E. DeBakey Department of Surgery, Division of Surgical Research, Baylor College of Medicine, Houston, Texas, United States of America
| | - Dongliang Liu
- Michael E. DeBakey Department of Surgery, Division of Surgical Research, Baylor College of Medicine, Houston, Texas, United States of America
| | - Zhengdong Liang
- Michael E. DeBakey Department of Surgery, Division of Surgical Research, Baylor College of Medicine, Houston, Texas, United States of America
| | - George Van Buren
- Michael E. DeBakey Department of Surgery, Division of Surgical Research, Baylor College of Medicine, Houston, Texas, United States of America
| | - Changyi Chen
- Michael E. DeBakey Department of Surgery, Division of Surgical Research, Baylor College of Medicine, Houston, Texas, United States of America
| | - Qizhi Yao
- Michael E. DeBakey Department of Surgery, Division of Surgical Research, Baylor College of Medicine, Houston, Texas, United States of America
- Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey VA Medical Center, Houston, Texas, United States of America
- * E-mail:
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Barr J, Charania S, Gilmutdinov R, Yakovlev K, Shidlovskii Y, Schedl P. The CPEB translational regulator, Orb, functions together with Par proteins to polarize the Drosophila oocyte. PLoS Genet 2019; 15:e1008012. [PMID: 30865627 PMCID: PMC6433291 DOI: 10.1371/journal.pgen.1008012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 03/25/2019] [Accepted: 02/12/2019] [Indexed: 01/05/2023] Open
Abstract
orb is a founding member of the CPEB family of translational regulators and is required at multiple steps during Drosophila oogenesis. Previous studies showed that orb is required during mid-oogenesis for the translation of the posterior/germline determinant oskar mRNA and the dorsal-ventral determinant gurken mRNA. Here, we report that orb also functions upstream of these axes determinants in the polarization of the microtubule network (MT). Prior to oskar and gurken translational activation, the oocyte MT network is repolarized. The MT organizing center at the oocyte posterior is disassembled, and a new MT network is established at the oocyte anterior. Repolarization depends upon cross-regulatory interactions between anterior (apical) and posterior (basal) Par proteins. We show that repolarization of the oocyte also requires orb and that orb is needed for the proper functioning of the Par proteins. orb interacts genetically with aPKC and cdc42 and in egg chambers compromised for orb activity, Par-1 and aPKC protein and aPKC mRNA are mislocalized. Moreover, like cdc42-, the defects in Par protein localization appear to be connected to abnormalities in the cortical actin cytoskeleton. These abnormalities also disrupt the localization of the spectraplakin Shot and the microtubule minus-end binding protein Patronin. These two proteins play a critical role in the repolarization of the MT network. The specification of polarity axes in the Drosophila egg and embryo depends on the proper organization of the microtubule (MT) and actin cytoskeleton during mid-oogenesis. During this period, the MT organizing center at the posterior of the oocyte is disassembled and a MT network is established at the anterior and anterior-lateral cortex of the oocyte. We show that the CPEB translation factor orb plays a critical role in the reorganization of the MT network. orb appears to function at several levels during MT reorganization. orb interacts genetically with genes encoding Par proteins, aPKC and cdc42, and disrupts the localization of Par-1 and aPKC within the oocyte. orb also plays an important role in organizing the cortical actin cytoskeleton. The defects in the actin cytoskeleton disrupt the cortical association of Shot and Patronin, which are responsible for nucleating the assembly of the anterior MT network.
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Affiliation(s)
- Justinn Barr
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, United States of America
| | - Sofia Charania
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, United States of America
| | - Rudolf Gilmutdinov
- Laboratory of Gene Expression Regulation in Development, Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia
| | - Konstantin Yakovlev
- Laboratory of Gene Expression Regulation in Development, Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia
| | - Yulii Shidlovskii
- Laboratory of Gene Expression Regulation in Development, Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia
| | - Paul Schedl
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, United States of America
- Laboratory of Gene Expression Regulation in Development, Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia
- * E-mail:
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15
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Silva TM, Moretto FCF, Sibio MTD, Gonçalves BM, Oliveira M, Olimpio RMC, Oliveira DAM, Costa SMB, Deprá IC, Namba V, Nunes MT, Nogueira CR. Triiodothyronine (T3) upregulates the expression of proto-oncogene TGFA independent of MAPK/ERK pathway activation in the human breast adenocarcinoma cell line, MCF7. Arch Endocrinol Metab 2019; 63:142-147. [PMID: 30916164 PMCID: PMC10522138 DOI: 10.20945/2359-3997000000114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 12/12/2018] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To verify the physiological action of triiodothyronine T3 on the expression of transforming growth factor α (TGFA) mRNA in MCF7 cells by inhibition of RNA Polymerase II and the MAPK/ERK pathway. MATERIALS AND METHODS The cell line was treated with T3 at a physiological dose (10-9M) for 10 minutes, 1 and 4 hour (h) in the presence or absence of the inhibitors, α-amanitin (RNA polymerase II inhibitor) and PD98059 (MAPK/ERK pathway inhibitor). TGFA mRNA expression was analyzed by RT-PCR. For data analysis, we used ANOVA, complemented with the Tukey test and Student t-test, with a minimum significance of 5%. RESULTS T3 increases the expression of TGFA mRNA in MCF7 cells in 4 h of treatment. Inhibition of RNA polymerase II modulates the effect of T3 treatment on the expression of TGFA in MCF7 cells. Activation of the MAPK/ERK pathway is not required for T3 to affect the expression of TGFA mRNA. CONCLUSION Treatment with a physiological concentration of T3 after RNA polymerase II inhibition altered the expression of TGFA. Inhibition of the MAPK/ERK pathway after T3 treatment does not interfere with the TGFA gene expression in a breast adenocarcinoma cell line.
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Affiliation(s)
- Tabata M. Silva
- Universidade Estadual PaulistaUniversidade Estadual PaulistaFaculdade de Medicina de BotucatuDepartamento de Medicina InternaBotucatuSPBrasilDepartamento de Medicina Interna, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil
| | - Fernanda C. F. Moretto
- Universidade Estadual PaulistaUniversidade Estadual PaulistaFaculdade de Medicina de BotucatuDepartamento de Medicina InternaBotucatuSPBrasilDepartamento de Medicina Interna, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil
| | - Maria T. De Sibio
- Universidade Estadual PaulistaUniversidade Estadual PaulistaFaculdade de Medicina de BotucatuDepartamento de Medicina InternaBotucatuSPBrasilDepartamento de Medicina Interna, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil
| | - Bianca M. Gonçalves
- Universidade Estadual PaulistaUniversidade Estadual PaulistaFaculdade de Medicina de BotucatuDepartamento de Medicina InternaBotucatuSPBrasilDepartamento de Medicina Interna, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil
| | - Miriane Oliveira
- Universidade Estadual PaulistaUniversidade Estadual PaulistaFaculdade de Medicina de BotucatuDepartamento de Medicina InternaBotucatuSPBrasilDepartamento de Medicina Interna, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil
| | - Regiane M. C. Olimpio
- Universidade Estadual PaulistaUniversidade Estadual PaulistaFaculdade de Medicina de BotucatuDepartamento de Medicina InternaBotucatuSPBrasilDepartamento de Medicina Interna, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil
| | - Diego A. M. Oliveira
- Universidade Estadual PaulistaUniversidade Estadual PaulistaBotucatuSPBrasilUniversidade Estadual Paulista (UNESP), Botucatu, SP, Brasil
| | - Sarah M. B. Costa
- Universidade Estadual PaulistaUniversidade Estadual PaulistaFaculdade de Medicina de BotucatuDepartamento de Medicina InternaBotucatuSPBrasilDepartamento de Medicina Interna, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil
| | - Igor C. Deprá
- Universidade Estadual PaulistaUniversidade Estadual PaulistaFaculdade de Medicina de BotucatuDepartamento de Medicina InternaBotucatuSPBrasilDepartamento de Medicina Interna, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil
| | - Vickeline Namba
- Universidade Estadual PaulistaUniversidade Estadual PaulistaFaculdade de Medicina de BotucatuDepartamento de Medicina InternaBotucatuSPBrasilDepartamento de Medicina Interna, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil
| | - Maria T. Nunes
- Universidade de São PauloUniversidade de São PauloInstituto de Ciências BiomédicasDepartamento de Fisiologia e BiofísicaSão PauloSPBrasilDepartamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas, Universidade de São Paulo (USP), São Paulo, SP, Brasil
| | - Célia R. Nogueira
- Universidade Estadual PaulistaUniversidade Estadual PaulistaFaculdade de Medicina de BotucatuDepartamento de Medicina InternaBotucatuSPBrasilDepartamento de Medicina Interna, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brasil
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16
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Li Z, Li Y, Overstreet JM, Chung S, Niu A, Fan X, Wang S, Wang Y, Zhang MZ, Harris RC. Inhibition of Epidermal Growth Factor Receptor Activation Is Associated With Improved Diabetic Nephropathy and Insulin Resistance in Type 2 Diabetes. Diabetes 2018; 67:1847-1857. [PMID: 29959129 PMCID: PMC6110321 DOI: 10.2337/db17-1513] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 06/18/2018] [Indexed: 12/18/2022]
Abstract
Previous studies by us and others have indicated that renal epidermal growth factor receptors (EGFR) are activated in models of diabetic nephropathy (DN) and that inhibition of EGFR activity protects against progressive DN in type 1 diabetes. In this study we examined whether inhibition of EGFR activation would affect the development of DN in a mouse model of accelerated type 2 diabetes (BKS db/db with endothelial nitric oxide knockout [eNOS-/-db/db]). eNOS-/-db/db mice received vehicle or erlotinib, an inhibitor of EGFR tyrosine kinase activity, beginning at 8 weeks of age and were sacrificed at 20 weeks of age. In addition, genetic models inhibiting EGFR activity (waved 2) and transforming growth factor-α (waved 1) were studied in this model of DN in type 2 diabetes. Compared with vehicle-treated mice, erlotinib-treated animals had less albuminuria and glomerulosclerosis, less podocyte loss, and smaller amounts of renal profibrotic and fibrotic components. Erlotinib treatment decreased renal oxidative stress, macrophage and T-lymphocyte infiltration, and the production of proinflammatory cytokines. Erlotinib treatment also preserved pancreas function, and these mice had higher blood insulin levels at 20 weeks, decreased basal blood glucose levels, increased glucose tolerance and insulin sensitivity, and increased blood levels of adiponectin compared with vehicle-treated mice. Similar to the aforementioned results, both waved 1 and waved 2 diabetic mice also had attenuated DN, preserved pancreas function, and decreased basal blood glucose levels. In this mouse model of accelerated DN, inhibition of EGFR signaling led to increased longevity.
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Affiliation(s)
- Zhilian Li
- Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangdong, China
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Yan Li
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
- Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jessica M Overstreet
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Sungjin Chung
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Aolei Niu
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Xiaofeng Fan
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Suwan Wang
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Yinqiu Wang
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Ming-Zhi Zhang
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
| | - Raymond C Harris
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
- Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, TN
- Department of Veterans Affairs, Nashville, TN
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17
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Kakoschky B, Pleli T, Schmithals C, Zeuzem S, Brüne B, Vogl TJ, Korf HW, Weigert A, Piiper A. Selective targeting of tumor associated macrophages in different tumor models. PLoS One 2018; 13:e0193015. [PMID: 29447241 PMCID: PMC5814016 DOI: 10.1371/journal.pone.0193015] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 02/03/2018] [Indexed: 12/14/2022] Open
Abstract
Tumor progression largely depends on the presence of alternatively polarized (M2) tumor-associated macrophages (TAMs), whereas the classical M1-polarized macrophages can promote anti-tumorigenic immune responses. Thus, selective inhibition of M2-TAMs is a desirable anti-cancer approach in highly resistant tumor entities such as hepatocellular carcinoma (HCC) or breast cancer. We here examined whether a peptide that selectively binds to and is internalized by in vitro-differentiated murine M2 macrophages as compared to M1 macrophages, termed M2pep, could be used to selectively target TAMs in HCC and breast carcinoma. We confirmed selectivity of M2pep for in vitro M2 polarized macrophages. Upon incubation of suspended mixed 4T1 tumor cells with M2pep, high amounts of the TAMs were found to be associated with M2pep, whereas in mixed tumor cell suspensions from two HCC mouse models, M2pep showed only low-degree binding to TAMs. M2pep also showed low-degree targeting of liver macrophages. This indicates that the TAMs in different tumor entities show different targeting of M2pep and that M2pep is a very promising approach to develop selective M2-TAM-targeting in tumor entities containing M2-TAMs with significant amounts of the so far elusive M2pep receptor(s).
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Affiliation(s)
- Bianca Kakoschky
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Thomas Pleli
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | | | - Stefan Zeuzem
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
| | - Bernhard Brüne
- Institute of Biochemistry I, Goethe-University Frankfurt, Frankfurt, Germany
| | - Thomas J. Vogl
- Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Frankfurt, Germany
| | - Horst-Werner Korf
- Institute of Anatomy 2, University Hospital Frankfurt, Frankfurt, Germany
| | - Andreas Weigert
- Institute of Biochemistry I, Goethe-University Frankfurt, Frankfurt, Germany
| | - Albrecht Piiper
- Department of Medicine 1, University Hospital Frankfurt, Frankfurt, Germany
- * E-mail:
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18
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Wilson JL, Kefaloyianni E, Stopfer L, Harrison C, Sabbisetti VS, Fraenkel E, Lauffenburger DA, Herrlich A. Functional Genomics Approach Identifies Novel Signaling Regulators of TGFα Ectodomain Shedding. Mol Cancer Res 2018; 16:147-161. [PMID: 29018056 PMCID: PMC5859574 DOI: 10.1158/1541-7786.mcr-17-0140] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 08/16/2017] [Accepted: 10/04/2017] [Indexed: 11/16/2022]
Abstract
Ectodomain shedding of cell-surface precursor proteins by metalloproteases generates important cellular signaling molecules. Of importance for disease is the release of ligands that activate the EGFR, such as TGFα, which is mostly carried out by ADAM17 [a member of the A-disintegrin and metalloprotease (ADAM) domain family]. EGFR ligand shedding has been linked to many diseases, in particular cancer development, growth and metastasis, as well as resistance to cancer therapeutics. Excessive EGFR ligand release can outcompete therapeutic EGFR inhibition or the inhibition of other growth factor pathways by providing bypass signaling via EGFR activation. Drugging metalloproteases directly have failed clinically because it indiscriminately affected shedding of numerous substrates. It is therefore essential to identify regulators for EGFR ligand cleavage. Here, integration of a functional shRNA genomic screen, computational network analysis, and dedicated validation tests succeeded in identifying several key signaling pathways as novel regulators of TGFα shedding in cancer cells. Most notably, a cluster of genes with NFκB pathway regulatory functions was found to strongly influence TGFα release, albeit independent of their NFκB regulatory functions. Inflammatory regulators thus also govern cancer cell growth-promoting ectodomain cleavage, lending mechanistic understanding to the well-known connection between inflammation and cancer.Implications: Using genomic screens and network analysis, this study defines targets that regulate ectodomain shedding and suggests new treatment opportunities for EGFR-driven cancers. Mol Cancer Res; 16(1); 147-61. ©2017 AACR.
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Affiliation(s)
- Jennifer L Wilson
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Eirini Kefaloyianni
- Division of Nephrology, Washington University School of Medicine, St. Louis, Missouri
| | - Lauren Stopfer
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Christina Harrison
- Department of Biology, University of Massachusetts, Boston, Massachusetts
| | | | - Ernest Fraenkel
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
- Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Douglas A Lauffenburger
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts.
| | - Andreas Herrlich
- Division of Nephrology, Washington University School of Medicine, St. Louis, Missouri.
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19
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Abstract
Objective A meta-analysis was performed to examine the association among maternal cigarette smoking, infant genotype at the Taq1 site in the transforming growth factor α (TGFA) locus, and risk of nonsyndromic oral clefts, both cleft palate (CP) and cleft lip with or without cleft palate (CL/P). Design Five published case-control studies were included in the meta-analyis. Pooled Mantel-Haenszel odds ratios (OR) and 95% confidence intervals (CIs) were computed. Gene-environment interaction was also assessed by using the pooled data in a case-only analysis and polytomous logistic regression. Results Among nonsmoking mothers, there was no evidence of any increased risk for CP if the infant carried the TGFA Taq1 C2 allele. If the mother reported smoking, however, there was an overall increased risk for CP if the infant carried the C2 allele (ORsmokers = 1.95; 95% CI = 1.22 to 3.10). TGFA genotype did not increase risk to CL/P, regardless of maternal smoking status. Polytomous logistic regression revealed a significant overall smoking effect for CL/P (OR = 1.64, 95% CI = 1.33 to 2.02) and CP (OR = 1.42, 95% CI = 1.06 to 1.90). Conclusions While maternal smoking was a consistent risk factor for both CL/P and CP across all studies, the suggestive evidence for gene-environment interaction between the infant's genotype at the Taq1 marker in TGFA and maternal smoking was limited to CP. Furthermore, evidence for such gene-environment interaction was strongest in a case-control study drawn from a birth defect registry where infants with non-cleft defects served as controls.
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Affiliation(s)
- Joanna S Zeiger
- Johns Hopkins Bloomberg School of Hygiene and Public Health, Baltimore, Maryland, USA
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20
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Willems SM, Wright DJ, Day FR, Trajanoska K, Joshi PK, Morris JA, Matteini AM, Garton FC, Grarup N, Oskolkov N, Thalamuthu A, Mangino M, Liu J, Demirkan A, Lek M, Xu L, Wang G, Oldmeadow C, Gaulton KJ, Lotta LA, Miyamoto-Mikami E, Rivas MA, White T, Loh PR, Aadahl M, Amin N, Attia JR, Austin K, Benyamin B, Brage S, Cheng YC, Cięszczyk P, Derave W, Eriksson KF, Eynon N, Linneberg A, Lucia A, Massidda M, Mitchell BD, Miyachi M, Murakami H, Padmanabhan S, Pandey A, Papadimitriou I, Rajpal DK, Sale C, Schnurr TM, Sessa F, Shrine N, Tobin MD, Varley I, Wain LV, Wray NR, Lindgren CM, MacArthur DG, Waterworth DM, McCarthy MI, Pedersen O, Khaw KT, Kiel DP, Pitsiladis Y, Fuku N, Franks PW, North KN, van Duijn CM, Mather KA, Hansen T, Hansson O, Spector T, Murabito JM, Richards JB, Rivadeneira F, Langenberg C, Perry JRB, Wareham NJ, Scott RA. Large-scale GWAS identifies multiple loci for hand grip strength providing biological insights into muscular fitness. Nat Commun 2017; 8:16015. [PMID: 29313844 PMCID: PMC5510175 DOI: 10.1038/ncomms16015] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 05/22/2017] [Indexed: 02/02/2023] Open
Abstract
Hand grip strength is a widely used proxy of muscular fitness, a marker of frailty, and predictor of a range of morbidities and all-cause mortality. To investigate the genetic determinants of variation in grip strength, we perform a large-scale genetic discovery analysis in a combined sample of 195,180 individuals and identify 16 loci associated with grip strength (P<5 × 10-8) in combined analyses. A number of these loci contain genes implicated in structure and function of skeletal muscle fibres (ACTG1), neuronal maintenance and signal transduction (PEX14, TGFA, SYT1), or monogenic syndromes with involvement of psychomotor impairment (PEX14, LRPPRC and KANSL1). Mendelian randomization analyses are consistent with a causal effect of higher genetically predicted grip strength on lower fracture risk. In conclusion, our findings provide new biological insight into the mechanistic underpinnings of grip strength and the causal role of muscular strength in age-related morbidities and mortality.
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Affiliation(s)
- Sara M. Willems
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - Daniel J. Wright
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - Felix R. Day
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - Katerina Trajanoska
- Department of Internal Medicine, Erasmus Medical Center, 3015 CE Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, 3015 CE Rotterdam, The Netherlands
| | - Peter K. Joshi
- Usher Institute for Population Health Sciences and Informatics, University of Edinburgh, Edinburgh EH8 9AB, UK
| | - John A. Morris
- Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, Quebec, Canada QC H3T 1E2
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada H3G 0B1
| | - Amy M. Matteini
- Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
| | - Fleur C. Garton
- Queensland Brain Institute, University of Queensland, St Lucia, Queensland 4072, Australia
| | - Niels Grarup
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Nikolay Oskolkov
- Lund University Diabetes Center, Department of Clinical Sciences, Diabetes and Endocrinology, Skånes University Hospital, 222 41 Lund, Sweden
| | - Anbupalam Thalamuthu
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, New South Wales 2031, Australia
| | - Massimo Mangino
- Department of Twin Research & Genetic Epidemiology, Kings College London, London SE1 7EH, UK
- NIHR Biomedical Research Centre at Guy’s and St. Thomas’ NHS Foundation Trust, London SE1 9RT, UK
| | - Jun Liu
- Department of Epidemiology, Erasmus Medical Center, 3015 CE Rotterdam, The Netherlands
| | - Ayse Demirkan
- Department of Epidemiology, Erasmus Medical Center, 3015 CE Rotterdam, The Netherlands
- Department of Human Genetics, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Monkol Lek
- Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, Maryland 02114, USA
- Harvard Medical School, Boston, Maryland 02115, USA
| | - Liwen Xu
- Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, Maryland 02114, USA
- Harvard Medical School, Boston, Maryland 02115, USA
| | - Guan Wang
- Centre for Sport and Exercise Science and Medicine (SESAME), University of Brighton, Eastbourne BN20 7SN, UK
| | | | - Kyle J. Gaulton
- Department of Pediatrics, University of California San Diego, La Jolla, California 92093, USA
| | - Luca A. Lotta
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - Eri Miyamoto-Mikami
- Japan Society for the Promotion of Science, Tokyo 102-0083, Japan
- Department of Sports and Life Science, National Institute of Fitness and Sports, Kanoya, Kagoshima 891-2393, Japan
| | - Manuel A. Rivas
- Department of Biomedical Data Sciences, Stanford University, Stanford, California 94305, USA
- BROAD Institute of the Massachusetts Institute of Technology and Harvard University, Cambridge, Massachusetts 02142, USA
| | - Tom White
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - Po-Ru Loh
- BROAD Institute of the Massachusetts Institute of Technology and Harvard University, Cambridge, Massachusetts 02142, USA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts 02115, USA
| | - Mette Aadahl
- Research Centre for Prevention and Health, Capital Region of Denmark, Glostrup University Hospital, DK-2600 Glostrup, Denmark
| | - Najaf Amin
- Department of Epidemiology, Erasmus Medical Center, 3015 CE Rotterdam, The Netherlands
| | - John R. Attia
- Hunter Medical Research Institute, Newcastle, New South Wales 2305, Australia
- Faculty of Health and Medicine, University of Newcastle, Newcastle, New South Wales 2308, Australia
- John Hunter Hospital, New Lambton, New South Wales 2305, Australia
| | - Krista Austin
- Centre for Sport and Exercise Science and Medicine (SESAME), University of Brighton, Eastbourne BN20 7SN, UK
| | - Beben Benyamin
- Queensland Brain Institute, University of Queensland, St Lucia, Queensland 4072, Australia
- Institute for Molecular Bioscience, University of Queensland, St Lucia, Queensland 4072, Australia
| | - Søren Brage
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - Yu-Ching Cheng
- Division of Endocrinology Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Paweł Cięszczyk
- Faculty of Physical Education, Gdańsk University of Physical Education and Sport, 80-336 Gdańsk, Poland
| | - Wim Derave
- Department of Movement and Sports Sciences, Ghent University, 9000 Ghent, Belgium
| | - Karl-Fredrik Eriksson
- Lund University Diabetes Center, Department of Clinical Sciences, Diabetes and Endocrinology, Skånes University Hospital, 222 41 Lund, Sweden
| | - Nir Eynon
- Institute of Sport, Exercise & Active Living (ISEAL), Victoria University, Melbourne, Victoria 8001, Australia
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne, Victoria 3052, Australia
| | - Allan Linneberg
- Research Centre for Prevention and Health, Capital Region of Denmark, Glostrup University Hospital, DK-2600 Glostrup, Denmark
- Department of Clinical Experimental Research, Rigshospitalet, 2600 Glostrup, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Alejandro Lucia
- Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Madrid, Spain
- Research Institute ‘i+12’, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain
| | - Myosotis Massidda
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy
| | - Braxton D. Mitchell
- Division of Endocrinology Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
- Geriatrics Research and Education Clinical Center, Baltimore Veterans Administration Medical Center, Baltimore, Maryland 21201, USA
| | - Motohiko Miyachi
- National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo 162-8636, Japan
| | - Haruka Murakami
- National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo 162-8636, Japan
| | - Sandosh Padmanabhan
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Ashutosh Pandey
- Target Sciences, GlaxoSmithKline, King of Prussia, Pennsylvania 19406, USA
| | - Ioannis Papadimitriou
- Institute of Sport, Exercise & Active Living (ISEAL), Victoria University, Melbourne, Victoria 8001, Australia
| | - Deepak K. Rajpal
- Target Sciences, GlaxoSmithKline, King of Prussia, Pennsylvania 19406, USA
| | - Craig Sale
- Musculoskeletal Physiology Research Group, Sport, Health and Performance Enhancement (SHAPE) Research Centre, Nottingham Trent University, Nottingham NG1 4FQ, UK
| | - Theresia M. Schnurr
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Francesco Sessa
- Department of Clinical and Experimental Medicine, Medical Genetics, University of Foggia, 71122 Foggia FG, Italy
| | - Nick Shrine
- Department of Health Sciences, University of Leicester, Leicester LE1 7RH, UK
- National Institute for Health Research, Leicester Respiratory Biomedical Research Unit, Glenfield Hospital, Leicester LE3 9QP, UK
| | - Martin D. Tobin
- Department of Health Sciences, University of Leicester, Leicester LE1 7RH, UK
- National Institute for Health Research, Leicester Respiratory Biomedical Research Unit, Glenfield Hospital, Leicester LE3 9QP, UK
| | - Ian Varley
- Musculoskeletal Physiology Research Group, Sport, Health and Performance Enhancement (SHAPE) Research Centre, Nottingham Trent University, Nottingham NG1 4FQ, UK
| | - Louise V. Wain
- Department of Health Sciences, University of Leicester, Leicester LE1 7RH, UK
- National Institute for Health Research, Leicester Respiratory Biomedical Research Unit, Glenfield Hospital, Leicester LE3 9QP, UK
| | - Naomi R. Wray
- Queensland Brain Institute, University of Queensland, St Lucia, Queensland 4072, Australia
- Institute for Molecular Bioscience, University of Queensland, St Lucia, Queensland 4072, Australia
| | - Cecilia M. Lindgren
- BROAD Institute of the Massachusetts Institute of Technology and Harvard University, Cambridge, Massachusetts 02142, USA
- The Big Data Institute, University of Oxford, Oxford OX3 7BN, UK
- Wellcome Trust Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, UK
| | - Daniel G. MacArthur
- Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, Maryland 02114, USA
- BROAD Institute of the Massachusetts Institute of Technology and Harvard University, Cambridge, Massachusetts 02142, USA
| | - Dawn M. Waterworth
- Target Sciences, GlaxoSmithKline, King of Prussia, Pennsylvania 19406, USA
| | - Mark I. McCarthy
- Wellcome Trust Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, UK
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford OX3 7LE, UK
- NIHR Oxford Biomedical Research Centre, Oxford OX3 7LE, UK
| | - Oluf Pedersen
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Kay-Tee Khaw
- Department of Public Health and Primary Care, University of Cambridge, Cambridge CB2 0SR, UK
| | - Douglas P. Kiel
- Harvard Medical School, Boston, Maryland 02115, USA
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
- Department of Medicine, Beth Israel Deaconess Medical Centre, Boston, Massachusetts 02215, USA
| | - Yannis Pitsiladis
- Centre for Sport and Exercise Science and Medicine (SESAME), University of Brighton, Eastbourne BN20 7SN, UK
| | - Noriyuki Fuku
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan
| | - Paul W. Franks
- Genetic and Molecular Epidemiology Unit, Department of Clinical Sciences, Lund University, Skånes University Hospital, 222 41 Lund, Sweden
- Public Health and Clinical Medicine, Section for Medicine, Umeå University, 901 87 Umeå, Sweden
- Biobank Research, Umeå University, 901 87 Umeå, Sweden
| | - Kathryn N. North
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne, Victoria 3052, Australia
| | - Cornelia M. van Duijn
- Department of Epidemiology, Erasmus Medical Center, 3015 CE Rotterdam, The Netherlands
| | - Karen A. Mather
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, New South Wales 2031, Australia
| | - Torben Hansen
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Faculty of Health Sciences, University of Southern Denmark, 5230 Odense M, Denmark
| | - Ola Hansson
- Lund University Diabetes Center, Department of Clinical Sciences, Diabetes and Endocrinology, Skånes University Hospital, 222 41 Lund, Sweden
| | - Tim Spector
- Department of Twin Research & Genetic Epidemiology, Kings College London, London SE1 7EH, UK
| | - Joanne M. Murabito
- Boston University School of Medicine, Department of Medicine, Section of General Internal Medicine, Boston, Massachusetts 02118, USA
- National Heart Lung and Blood Institute’s and Boston University’s Framingham Heart Study, Framingham, Massachusetts 01702, USA
| | - J. Brent Richards
- Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, Quebec, Canada QC H3T 1E2
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada H3G 0B1
- Department of Twin Research & Genetic Epidemiology, Kings College London, London SE1 7EH, UK
- Department of Medicine, McGill University, Montreal, Quebec, Canada H3G 1A4
| | - Fernando Rivadeneira
- Department of Internal Medicine, Erasmus Medical Center, 3015 CE Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, 3015 CE Rotterdam, The Netherlands
| | - Claudia Langenberg
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - John R. B. Perry
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - Nick J. Wareham
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
| | - Robert A. Scott
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge CB2 0QQ, UK
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21
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Lim D, Kim KS, Kim H, Ko KC, Song JJ, Choi JH, Shin M, Min JJ, Jeong JH, Choy HE. Anti-tumor activity of an immunotoxin (TGFα-PE38) delivered by attenuated Salmonella typhimurium. Oncotarget 2017; 8:37550-37560. [PMID: 28473665 PMCID: PMC5514929 DOI: 10.18632/oncotarget.17197] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 04/06/2017] [Indexed: 12/22/2022] Open
Abstract
The anticancer strategy underlying the use of immunotoxins is as follows: the cancer-binding domain delivers the toxin to a cancer cell, after which the toxin enters and kills the cell. TGFα-PE38 is an immunotoxin comprising transforming growth factor alpha (TGFα), a natural ligand of epidermal growth factor receptor (EGFR), and a modified Pseudomonas exotoxin A (PE38) lacking N terminal cell-binding domain, a highly potent cytotoxic protein moiety. Tumor cells with high level of EGFR undergo apoptosis upon treatment with TGFα-PE38. However, clinical trials demonstrated that this immunotoxin delivered by an intracerebral infusion technique has only a limited inhibitory effect on intracranial tumors mainly due to inconsistent drug delivery. To circumvent this problem, we turned to tumor-seeking bacterial system. Here, we engineered Salmonella typhimurium to selectively express and release TGFα-PE38. Engineered bacteria were administered to mice implanted with mouse colon or breast tumor cells expressing high level of EGFR. We observed that controlled expression and release of TGFα-PE38 from intra-tumoral Salmonellae by either an engineered phage lysis system or by a bacterial membrane transport signal led to significant inhibition of solid tumor growth. These results demonstrated that delivery by tumor-seeking bacteria would greatly augment efficacy of immunotoxin in cancer therapeutics.
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Affiliation(s)
- Daejin Lim
- Department of Microbiology, Chonnam National University Medical School, Gwangju, Republic of Korea
- Molecular Medicine, BK21 Plus, Chonnam National University Graduate School, Gwangju, Republic of Korea
| | - Kwang Soo Kim
- Department of Microbiology, Chonnam National University Medical School, Gwangju, Republic of Korea
- Molecular Medicine, BK21 Plus, Chonnam National University Graduate School, Gwangju, Republic of Korea
| | - Hyunju Kim
- Department of Microbiology, Chonnam National University Medical School, Gwangju, Republic of Korea
- Molecular Medicine, BK21 Plus, Chonnam National University Graduate School, Gwangju, Republic of Korea
| | - Kyong-Cheol Ko
- Applied Microbiology Research Center, Bio-Materials Research Institute, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Jeonbuk, Republic of Korea
| | - Jae Jun Song
- Applied Microbiology Research Center, Bio-Materials Research Institute, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Jeonbuk, Republic of Korea
| | - Jong Hyun Choi
- Applied Microbiology Research Center, Bio-Materials Research Institute, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Jeonbuk, Republic of Korea
| | - Minsang Shin
- Department of Microbiology, Kyungpook National University Medical School, Daegu, Republic of Korea
| | - Jung-joon Min
- Molecular Medicine, BK21 Plus, Chonnam National University Graduate School, Gwangju, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jae-Ho Jeong
- Department of Microbiology, Chonnam National University Medical School, Gwangju, Republic of Korea
- Molecular Medicine, BK21 Plus, Chonnam National University Graduate School, Gwangju, Republic of Korea
| | - Hyon E. Choy
- Department of Microbiology, Chonnam National University Medical School, Gwangju, Republic of Korea
- Molecular Medicine, BK21 Plus, Chonnam National University Graduate School, Gwangju, Republic of Korea
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22
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Aguilera-Gomez A, Rabouille C. Membrane-bound organelles versus membrane-less compartments and their control of anabolic pathways in Drosophila. Dev Biol 2017; 428:310-317. [PMID: 28377034 DOI: 10.1016/j.ydbio.2017.03.029] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 03/27/2017] [Accepted: 03/27/2017] [Indexed: 12/29/2022]
Abstract
Classically, we think of cell compartmentalization as being achieved by membrane-bound organelles. It has nevertheless emerged that membrane-less assemblies also largely contribute to this compartmentalization. Here, we compare the characteristics of both types of compartmentalization in term of maintenance of functional identities. Furthermore, membrane less-compartments are critical for sustaining developmental and cell biological events as they control major metabolic pathways. We describe two examples related to this issue in Drosophila, the role of P-bodies in the translational control of gurken in the Drosophila oocyte, and the formation of Sec bodies upon amino-acid starvation in Drosophila cells.
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Affiliation(s)
| | - Catherine Rabouille
- Hubrecht Institute of the KNAW & UMC Utrecht, 3584 CT Utrecht, The Netherlands; Department of Cell Biology, UMC Utrecht, The Netherlands; Department of Cell Biology, UMC Groningen, The Netherlands.
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23
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Liu X, Chen L, Tian XD, Zhang T. MiR-137 and its target TGFA modulate cell growth and tumorigenesis of non-small cell lung cancer. Eur Rev Med Pharmacol Sci 2017; 21:511-517. [PMID: 28239819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE MiR-137 has been reported to serve as a tumor suppressor in non-small cell lung cancer (NSCLC). However, the potential mechanism remains largely unclear. The present study aimed to explore the potential molecular mechanisms by which miR-137 regulated NSCLC. MATERIALS AND METHODS Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) was used to quantify the expression levels of miR-137 in NSCLC tissues and cell lines. Dual-luciferase reporter assay was employed to confirm the specificity of miR-137 target genes. An MTT assay and flow cytometry were used to determine the rates of cell proliferation and cell cycle distribution. Furthermore, the effect of miR-137 up-regulation on TGFA expression was examined by western blot. RESULTS miR-137 expression levels in NSCLC cell lines or tissue were significantly lower than in a normal human lung cell line or adjacent normal tissues. We further found that upregulation of miR-137 inhibited the proliferation of NSCLC cells, whereas silencing of miR-137 promoted the proliferation of NSCLC. Moreover, we identified TGFA as a direct target gene of miR-137 in NSCLC cell. Finally, Similarly, knockdown of TGFA led to the suppression of NSCLC cell proliferation. CONCLUSIONS Overall, our findings indicated that miR-137 served as a tumor suppressor in NSCLC and its suppressive effect is mediated by repressing TGFA expression.
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Affiliation(s)
- X Liu
- Department of Thoracic Surgery, Chinese PLA General Hospital, Haidian, Beijing, China.
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24
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Abstract
The DEAD-box helicase Vasa (Vas) has been most extensively studied in the fruit fly, Drosophila melanogaster, and numerous roles for it in germline development have been discovered. Here, we summarize the present state of knowledge about processes during oogenesis that involve Vas, as well as functions of Vas as a maternal determinant of embryonic spatial patterning and germ cell specification. We review literature that implicates Vas in Piwi-interacting RNA (piRNA) biogenesis in germline cells and in regulating mitosis in germline stem cells (GSCs). We describe the functions of Vas in translational activation of two mRNAs, gurken (grk) and mei-P26, which encode proteins that are important regulators of developmental processes, as Grk specifies both the dorsal-ventral and the anterior-posterior axis of the embryo and Mei-P26 promotes GSC differentiation. The role of Vas in assembly of polar granules, ribonucleoprotein particles that accumulate in the posterior pole plasm of the oocyte and are essential for germ cell specification and posterior embryonic patterning, is also described.
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Affiliation(s)
- Mehrnoush Dehghani
- Department of Biology, McGill University, 3649 Promenade Sir William Osler, Montréal, Québec, Canada, H3G 0B1
| | - Paul Lasko
- Department of Biology, McGill University, 3649 Promenade Sir William Osler, Montréal, Québec, Canada, H3G 0B1.
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25
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Abstract
Messenger RNA (mRNA) localization is a powerful and prevalent mechanism of post-transcriptional gene regulation, enabling the cell to produce protein at the exact location at which it is needed. The phenomenon of mRNA localization has been observed in many types of cells in organisms ranging from yeast to man. Thus, the process appears to be widespread and highly conserved. Several model systems have been used to understand the mechanism by which mRNAs are localized. One such model, and the focus of this chapter, is the egg chamber of the female Drosophila melanogaster. The polarity of the developing Drosophila oocyte and resulting embryo relies on the specific localization of three critical mRNAs: gurken, bicoid, and oskar. If these mRNAs are not localized during oogenesis, the resulting progeny will not survive. The study of these mRNAs has served as a model for understanding the general mechanisms by which mRNAs are sorted. In this chapter, we will discuss how the localization of these mRNAs enables polarity establishment. We will also discuss the role of motor proteins in the localization pathway. Finally, we will consider potential mechanisms by which mRNAs can be anchored at their site of localization. It is likely that the lessons learned using the Drosophila oocyte model system will be applicable to mRNAs that are localized in other organisms as well.
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Affiliation(s)
- Chandler H Goldman
- Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, 1459 Laney Walker Blvd., CB2917, Augusta, GA, 30912, USA
| | - Graydon B Gonsalvez
- Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, 1459 Laney Walker Blvd., CB2917, Augusta, GA, 30912, USA.
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26
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Cleary MP, Juneja SC, Phillips FC, Hu X, Grande JP, Maihle NJ. Leptin Receptor-Deficient MMTV-TGF-α/Leprdb Leprdb Female Mice Do Not Develop Oncogene-Induced Mammary Tumors. Exp Biol Med (Maywood) 2016; 229:182-93. [PMID: 14734797 DOI: 10.1177/153537020422900207] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Being overweight is a risk factor for postmenopausal breast cancer and is associated with an increased incidence and shortened latency of spontaneous and chemically Induced mammary tumors in rodents. However, leptin-deficient obese Lepob Lepob female mice have reduced incidences of spontaneous and oncogene-induced mammary tumors. Of interest, leptin enhances the proliferation of human breast cancer cell lines in which leptin receptors are expressed, which suggests that leptin signaling plays a role in tumor development. We evaluated oncogene-induced mammary tumor development in obese MMTV-TGF-α/Leprdb Leprdb mice that exhibit a defect in OB-Rb, which is considered to be the major signaling isoform of the leptin receptor. Lepr and MMTV-TGF-α mice were crossed, and the offspring were genotyped for oncogene expression and the determination of Lepr status. Lean MMTV-TGF-α/Lepr+ Lepr+ (homozygous) and MMTV-TGF-α/Lepr+ Leprdb (heterozygous) mice and obese MMTV-TGF-α/Leprdb Leprdb mice were monitored until age 104 weeks. Body weights of MMTV-TGF-α/Leprdb Leprdb mice were significantly heavier than those of the lean groups. No mammary tumors were detected in MMTV-TGF-α/LeprdbLeprdb mice, whereas the incidence of mammary tumors in MMTV-TGF-α/Lepr+ Lepr+ and MMTV-TGF-α/Lepr+ Leprdb mice was 69% and 82%, respectively. Examination of mammary tissue whole mounts indicated an absence of duct formation and branching for MMTV-TGF-α/Leprdb Leprdb mice. Both age at mammary tumor detection and tumor burden (tumors/mouse and tumor weights) were similar for the lean genotypes. Serum leptin levels of MMTV-TGF-α/Leprdb Leprdb mice were 12-20-fold higher than levels of lean mice. Thus, despite elevated serum leptin levels, leptin receptor-deficient MMTV-TGF-α/Leprdb Leprdb mice do not develop mammary tumors. This study provides additional evidence that leptin and its cognate receptor may be involved in mammary tumorigenesis.
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MESH Headings
- Animals
- Body Weight
- Disease Models, Animal
- Female
- Leptin/blood
- Leptin/metabolism
- Mammary Neoplasms, Experimental/genetics
- Mammary Neoplasms, Experimental/metabolism
- Mammary Neoplasms, Experimental/pathology
- Mammary Tumor Virus, Mouse/genetics
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Obesity/genetics
- Obesity/pathology
- Oncogenes/genetics
- Receptors, Cell Surface/deficiency
- Receptors, Cell Surface/physiology
- Receptors, Leptin
- Survival Analysis
- Transforming Growth Factor alpha/genetics
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Affiliation(s)
- Margot P Cleary
- Hormel Institute, University of Minnesota, Austin, Minnesota 55912, USA.
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27
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Castaño-Betancourt MC, Evans DS, Ramos YFM, Boer CG, Metrustry S, Liu Y, den Hollander W, van Rooij J, Kraus VB, Yau MS, Mitchell BD, Muir K, Hofman A, Doherty M, Doherty S, Zhang W, Kraaij R, Rivadeneira F, Barrett-Connor E, Maciewicz RA, Arden N, Nelissen RGHH, Kloppenburg M, Jordan JM, Nevitt MC, Slagboom EP, Hart DJ, Lafeber F, Styrkarsdottir U, Zeggini E, Evangelou E, Spector TD, Uitterlinden AG, Lane NE, Meulenbelt I, Valdes AM, van Meurs JBJ. Novel Genetic Variants for Cartilage Thickness and Hip Osteoarthritis. PLoS Genet 2016; 12:e1006260. [PMID: 27701424 PMCID: PMC5049763 DOI: 10.1371/journal.pgen.1006260] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 07/26/2016] [Indexed: 12/31/2022] Open
Abstract
Osteoarthritis is one of the most frequent and disabling diseases of the elderly. Only few genetic variants have been identified for osteoarthritis, which is partly due to large phenotype heterogeneity. To reduce heterogeneity, we here examined cartilage thickness, one of the structural components of joint health. We conducted a genome-wide association study of minimal joint space width (mJSW), a proxy for cartilage thickness, in a discovery set of 13,013 participants from five different cohorts and replication in 8,227 individuals from seven independent cohorts. We identified five genome-wide significant (GWS, P≤5·0×10-8) SNPs annotated to four distinct loci. In addition, we found two additional loci that were significantly replicated, but results of combined meta-analysis fell just below the genome wide significance threshold. The four novel associated genetic loci were located in/near TGFA (rs2862851), PIK3R1 (rs10471753), SLBP/FGFR3 (rs2236995), and TREH/DDX6 (rs496547), while the other two (DOT1L and SUPT3H/RUNX2) were previously identified. A systematic prioritization for underlying causal genes was performed using diverse lines of evidence. Exome sequencing data (n = 2,050 individuals) indicated that there were no rare exonic variants that could explain the identified associations. In addition, TGFA, FGFR3 and PIK3R1 were differentially expressed in OA cartilage lesions versus non-lesioned cartilage in the same individuals. In conclusion, we identified four novel loci (TGFA, PIK3R1, FGFR3 and TREH) and confirmed two loci known to be associated with cartilage thickness.The identified associations were not caused by rare exonic variants. This is the first report linking TGFA to human OA, which may serve as a new target for future therapies.
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Affiliation(s)
| | - Dan S. Evans
- California Pacific Medical Center Research Institute, San Francisco, California, United States of America
| | - Yolande F. M. Ramos
- Department of Medical Statistics and Bioinformatics, Section Molecular Epidemiology. Leiden University Medical Center, Leiden, The Netherlands
| | - Cindy G. Boer
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Sarah Metrustry
- Department of Twins Research and Genetic Epidemiology Unit, King’s College London, London, United Kingdom
| | - Youfang Liu
- Thurston Arthritis Research Center, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Wouter den Hollander
- Department of Medical Statistics and Bioinformatics, Section Molecular Epidemiology. Leiden University Medical Center, Leiden, The Netherlands
| | - Jeroen van Rooij
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Virginia B. Kraus
- Duke Molecular Physiology Institute and Division of Rheumatology. Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Michelle S. Yau
- Departments of Medicine and Epidemiology & Public Health, University of Maryland School of Medicine, Baltimore, Maryland, United States of America
| | - Braxton D. Mitchell
- Departments of Medicine and Epidemiology & Public Health, University of Maryland School of Medicine, Baltimore, Maryland, United States of America
- Geriatrics Research and Education Clinical Center, Baltimore Veterans Administration Medical Center, Baltimore, Maryland, United States of America
| | - Kenneth Muir
- Health Sciences Research Institute, University of Warwick, Warwick, United Kingdom
| | - Albert Hofman
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Epidemiology, Harvard T.H. School of Public Health, Boston, Massachusetts, United States of America
| | - Michael Doherty
- School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | - Sally Doherty
- School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | - Weiya Zhang
- School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | - Robert Kraaij
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Fernando Rivadeneira
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Elizabeth Barrett-Connor
- Epidemiology Division, Family Medicine and Public Health Department, University of California, San Diego, La Jolla, California
| | - Rose A. Maciewicz
- Respiratory, Inflammation, Autoimmunity Innovative Medicines, AstraZeneca AB, Mölndal, Sweden
| | - Nigel Arden
- Nuffield Department of Orthopaedics, Rheumatology and musculoskeletal sciences, University of Oxford, United Kingdom
| | - Rob G. H. H. Nelissen
- Department of Orthopaedics, Leiden University Medical Center, Leiden The Netherlands
| | - Margreet Kloppenburg
- Department of Rheumatology and Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Joanne M. Jordan
- Thurston Arthritis Research Center, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Michael C. Nevitt
- University of California at San Francisco, San Francisco, California
| | - Eline P. Slagboom
- Department of Medical Statistics and Bioinformatics, Section Molecular Epidemiology. Leiden University Medical Center, Leiden, The Netherlands
| | - Deborah J. Hart
- Department of Twins Research and Genetic Epidemiology Unit, King’s College London, London, United Kingdom
| | - Floris Lafeber
- University Medical Center Utrecht, Utrecht, The Netherlands
| | | | | | - Evangelos Evangelou
- Department of Hygiene & Epidemiology, University of Ioannina School of Medicine, Ioannina, Greece
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
| | - Tim D. Spector
- Department of Twins Research and Genetic Epidemiology Unit, King’s College London, London, United Kingdom
| | - Andre G. Uitterlinden
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Nancy E. Lane
- University of California at San Francisco, San Francisco, California
- School of Medicine, University of California, Davis, Sacramento, California
| | - Ingrid Meulenbelt
- Department of Medical Statistics and Bioinformatics, Section Molecular Epidemiology. Leiden University Medical Center, Leiden, The Netherlands
| | - Ana M. Valdes
- School of Medicine, University of Nottingham, Nottingham, United Kingdom
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28
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Ribback S, Sailer V, Böhning E, Günther J, Merz J, Steinmüller F, Utpatel K, Cigliano A, Peters K, Pilo MG, Evert M, Calvisi DF, Dombrowski F. The Epidermal Growth Factor Receptor (EGFR) Inhibitor Gefitinib Reduces but Does Not Prevent Tumorigenesis in Chemical and Hormonal Induced Hepatocarcinogenesis Rat Models. Int J Mol Sci 2016; 17:ijms17101618. [PMID: 27669229 PMCID: PMC5085651 DOI: 10.3390/ijms17101618] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Revised: 08/27/2016] [Accepted: 09/14/2016] [Indexed: 02/07/2023] Open
Abstract
Activation of the epidermal growth factor receptor (EGFR) signaling pathway promotes the development of hepatocellular adenoma (HCA) and carcinoma (HCC). The selective EGFR inhibitor Gefitinib was found to prevent hepatocarcinogenesis in rat cirrhotic livers. Thus, Gefitinib might reduce progression of pre-neoplastic liver lesions to HCC. In short- and long-term experiments, administration of N-Nitrosomorpholine (NNM) or intrahepatic transplantation of pancreatic islets in diabetic (PTx), thyroid follicles in thyroidectomized (TTx) and ovarian fragments in ovariectomized (OTx) rats was conducted for the induction of foci of altered hepatocytes (FAH). Gefitinib was administered for two weeks (20 mg/kg) or three and nine months (10 mg/kg). In NNM-treated rats, Gefitinib administration decreased the amount of FAH when compared to controls. The amount of HCA and HCC was decreased, but development was not prevented. Upon all transplantation models, proliferative activity of FAH was lower after administration of Gefitinib in short-term experiments. Nevertheless, the burden of HCA and HCC was not changed in later stages. Thus, EGFR inhibition by Gefitinib diminishes chemical and hormonal also induced hepatocarcinogenesis in the initiation stage in the non-cirrhotic liver. However, progression to malignant hepatocellular tumors was not prevented, indicating only a limited relevance of the EGFR signaling cascade in later stages of hepatocarcinogenesis.
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Affiliation(s)
- Silvia Ribback
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
| | - Verena Sailer
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
- Englander Institut for Precision Medicine, Weill Cornell University of Medicine, New York, NY 10065, USA.
| | - Enrico Böhning
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
| | - Julia Günther
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
| | - Jaqueline Merz
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
| | - Frauke Steinmüller
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
- Pathologisches Institut Diakonie-Krankenhaus, 27356 Rotenburg (Wümme), Germany.
| | - Kirsten Utpatel
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
- Institut für Pathologie, Universitätsklinikum Regensburg, 93053 Regensburg, Germany.
| | - Antonio Cigliano
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
| | - Kristin Peters
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
| | - Maria G Pilo
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
| | - Matthias Evert
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
- Institut für Pathologie, Universitätsklinikum Regensburg, 93053 Regensburg, Germany.
| | - Diego F Calvisi
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
| | - Frank Dombrowski
- Institut für Pathologie, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
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29
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Du J, Deng J. Associations Between TGFA/TGFB3/MSX1 Gene Polymorphisms and Congenital Non-Syndromic Hearing Impairment in a Chinese Population. Med Sci Monit 2016; 22:2253-2266. [PMID: 27356075 PMCID: PMC4930271 DOI: 10.12659/msm.896527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 12/17/2015] [Indexed: 06/06/2023] Open
Abstract
BACKGROUND The aim of this study was to investigate whether the TGFA/TGFB3/MSX1 gene polymorphisms and haplotypes lead to individual differences between congenital non-syndromic hearing impairment (NSHI) patients and normal people in a Chinese population and to analyze the risk factors for NSHI. MATERIAL AND METHODS Between December 2010 and September 2014, 343 congenital NSHI patients were recruited as cases, and 272 healthy subjects were recruited as controls. Denaturing high-performance liquid chromatography (DHPLC) was used to identify genotypes, SHEsis software was used to conduct gene linkage disequilibrium and haplotype analyses, and regression analysis was performed to identify risk factors for congenital NSHI. RESULTS The distribution of genotype frequencies and allele frequencies of TGFA rs3771494, TGFB3 rs3917201 and rs2268626, and MSX1 rs3821949 and rs62636562 were significantly different between the case and the control groups (all P<0.05). TGFA/TGFB3/MSX1 gene rs3771494, rs1058213, rs3917201, rs2268626, rs3821949, and rs62636562 haplotype analysis showed that haplotype CCGTAC and TTACGT might be protective factors (both P<0.001), while TTGCGC might be a risk factor for the normal population (P<0.001). The other risk factors include paternal smoking, advanced maternal age, maternal sickness history, maternal contact with pesticides or similar drugs, maternal abortion history, maternal medication history, maternal passive smoking history during pregnancy, rs3771494 CT, rs2268626 CC and TC, and rs3821949 GG and AG genotypes were risk factors (all P<0.05), while maternal vitamin supplements during pregnancy, rs3917201 GA, rs62636562 TT and CT genotypes were protective factors for congenital NSHI (all P<0.05). CONCLUSIONS rs3771494, rs3917201, rs2268626, rs3821949 and rs62636562 might be associated with congenital NSHI.
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Matsushima-Nishiwaki R, Toyoda H, Nagasawa T, Yasuda E, Chiba N, Okuda S, Maeda A, Kaneoka Y, Kumada T, Kozawa O. Phosphorylated Heat Shock Protein 20 (HSPB6) Regulates Transforming Growth Factor-α-Induced Migration and Invasion of Hepatocellular Carcinoma Cells. PLoS One 2016; 11:e0151907. [PMID: 27046040 PMCID: PMC4821579 DOI: 10.1371/journal.pone.0151907] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 02/12/2016] [Indexed: 01/25/2023] Open
Abstract
Human hepatocellular carcinoma (HCC) is one of the major malignancies in the world. Small heat shock proteins (HSPs) are reported to play an important role in the regulation of a variety of cancer cell functions, and the functions of small HSPs are regulated by post-translational modifications such as phosphorylation. We previously reported that protein levels of a small HSP, HSP20 (HSPB6), decrease in vascular invasion positive HCC compared with those in the negative vascular invasion. Therefore, in the present study, we investigated whether HSP20 is implicated in HCC cell migration and the invasion using human HCC-derived HuH7 cells. The transforming growth factor (TGF)-α-induced migration and invasion were suppressed in the wild-type-HSP20 overexpressed cells in which phosphorylated HSP20 was detected. Phospho-mimic-HSP20 overexpression reduced the migration and invasion compared with unphosphorylated HSP20 overexpression. Dibutyryl cAMP, which enhanced the phosphorylation of wild-type-HSP20, significantly reduced the TGF-α-induced cell migration of wild-type HSP20 overexpressed cells. The TGF-α-induced cell migration was inhibited by SP600125, a c-Jun N-terminal kinases (JNK) inhibitor. In phospho-mimic-HSP20 overexpressed HuH7 cells, TGF-α-stimulated JNK phosphorylation was suppressed compared with the unphosphorylated HSP20 overexpressed cells. Moreover, the level of phospho-HSP20 protein in human HCC tissues was significantly correlated with tumor invasion. Taken together, our findings strongly suggest that phosphorylated HSP20 inhibits TGF-α-induced HCC cell migration and invasion via suppression of the JNK signaling pathway.
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Affiliation(s)
| | - Hidenori Toyoda
- Department of Gastroenterology, Ogaki Municipal Hospital, Ogaki, Gifu, Japan
| | - Tomoaki Nagasawa
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Eisuke Yasuda
- Department of Radiological Technology, Suzuka University of Medical Science, Suzuka, Mie, Japan
| | - Naokazu Chiba
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Seiji Okuda
- Department of Medical Technology, Ogaki Municipal Hospital, Ogaki, Gifu, Japan
| | - Atsuyuki Maeda
- Department of Surgery, Ogaki Municipal Hospital, Ogaki, Gifu, Japan
| | - Yuji Kaneoka
- Department of Surgery, Ogaki Municipal Hospital, Ogaki, Gifu, Japan
| | - Takashi Kumada
- Department of Gastroenterology, Ogaki Municipal Hospital, Ogaki, Gifu, Japan
| | - Osamu Kozawa
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu, Japan
- * E-mail:
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Coskunpinar E, Arkan H, Dedeoglu BG, Aksoz I, Polat E, Araz T, Aydos A, Oztemur Y, Akbas F, Onaran I. Determination of effective miRNAs in wound healing in an experimental Rat Model. Cell Mol Biol (Noisy-le-grand) 2015; 61:89-96. [PMID: 26718435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 12/20/2015] [Indexed: 06/05/2023]
Abstract
The larvae of Lucilia sericata have been used for centuries as medicinal maggots in the healing of wounds. The present study aimed to screen potential microRNAs related to ES-induced wound healing in rat skin wounds and to investigate the potential mechanisms contributing to accelerated wound healing. Healthy, male, 12 weeks old Wistar albino rats weighing 250-300 g were supplied by the Animal Experimental Center. All animal studies were performed in accordance with the NIH Guide for the Care and Use of Laboratory Animals. Wistar albino rats were treated by ES after post wounding and the differentially expressed miRNAs in wound biopsies were screened by microarray analysis at the end of treatments for 4,7 and 10 days. In addition, bioinformatics approaches were used to identify the potential target genes of differentially expressed miRNAs and the functions of their target genes. We found a significant up-regulation of rno-miR-99a* and rno-mir-877 in response to ES treatment. Further investigation of rno-miR-99a* and rno-mir-877 and their target genes (TGFa, TNF, TAGLN, MAPK1, MMP-9) implicated in present study could provide new insight for an understanding lead to the development of new treatment strategies. The identified miRNAs can be new biomarkers for ES- induced wound healing.
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Affiliation(s)
- E Coskunpinar
- Istanbul University Department of Molecular Medicine, Institute of Experimental Medicine Istanbul Turkey
| | - H Arkan
- Istanbul University Department of Medical Biology, Cerrahpasa Faculty of Medicine Istanbul Turkey
| | - B G Dedeoglu
- Ankara University Biotechnology Institute Ankara Turkey
| | - I Aksoz
- Istanbul University Department of Medical Biology, Cerrahpasa Faculty of Medicine Istanbul Turkey
| | - E Polat
- Istanbul University Department of Microbiology and Clinical Microbiology, Cerrahpasa Faculty of Medicine Istanbul Turkey
| | - T Araz
- Istanbul University Department of Molecular Medicine, Institute of Experimental Medicine Istanbul Turkey
| | - A Aydos
- Ankara University Biotechnology Institute Ankara Turkey
| | - Y Oztemur
- Ankara University Biotechnology Institute Ankara Turkey
| | - F Akbas
- Bezmialem Vakif University Department of Medical Biology, Faculty of Medicine Istanbul Turkey
| | - I Onaran
- Istanbul University Department of Medical Biology, Cerrahpasa Faculty of Medicine Istanbul Turkey
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Sato K, Takaishi M, Tokuoka S, Sano S. Involvement of TNF-α converting enzyme in the development of psoriasis-like lesions in a mouse model. PLoS One 2014; 9:e112408. [PMID: 25384035 PMCID: PMC4226544 DOI: 10.1371/journal.pone.0112408] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 10/07/2014] [Indexed: 01/10/2023] Open
Abstract
TNF-α plays a crucial role in psoriasis; therefore, TNF inhibition has become a gold standard for the treatment of psoriasis. TNF-α is processed from a membrane-bound form by TNF-α converting enzyme (TACE) to soluble form, which exerts a number of biological activities. EGF receptor (EGFR) ligands, including heparin-binding EGF-like growth factor (HB-EGF), amphiregulin and transforming growth factor (TGF)-α are also TACE substrates and are psoriasis-associated growth factors. Vascular endothelial growth factor (VEGF), one of the downstream molecules of EGFR and TNF signaling, plays a key role in angiogenesis for developing psoriasis. In the present study, to assess the possible role of TACE in the pathogenesis of psoriasis, we investigated the involvement of TACE in TPA-induced psoriasis-like lesions in K5.Stat3C mice, which represent a mouse model of psoriasis. In this mouse model, TNF-α, amphiregulin, HB-EGF and TGF-α were significantly up-regulated in the skin lesions, similar to human psoriasis. Treatment of K5.Stat3C mice with TNF-α or EGFR inhibitors attenuated the skin lesions, suggesting the roles of TACE substrates in psoriasis. Furthermore, the skin lesions of K5.Stat3C mice showed down-regulation of tissue inhibitor of metalloproteinase-3, an endogenous inhibitor of TACE, and an increase in soluble TNF-α. A TACE inhibitor abrogated EGFR ligand-dependent keratinocyte proliferation and VEGF production in vitro, suggesting that TACE was involved in both epidermal hyperplasia and angiogenesis during psoriasis development. These results strongly suggest that TACE contributes to the development of psoriatic lesions through releasing two kinds of psoriasis mediators, TNF-α and EGFR ligands. Therefore, TACE could be a potential therapeutic target for the treatment of psoriasis.
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Affiliation(s)
- Kenji Sato
- Department of Dermatology, Kochi Medical School, Kochi University, Nankoku, Japan
- Pharmacology Department, Drug Research Center, Kaken Pharmaceutical Co., Ltd., Kyoto, Japan
| | - Mikiro Takaishi
- Department of Dermatology, Kochi Medical School, Kochi University, Nankoku, Japan
| | - Shota Tokuoka
- Pharmacology Department, Drug Research Center, Kaken Pharmaceutical Co., Ltd., Kyoto, Japan
| | - Shigetoshi Sano
- Department of Dermatology, Kochi Medical School, Kochi University, Nankoku, Japan
- * E-mail:
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Zhang X, Xu J, Liu H, Yang L, Liang J, Xu N, Bai Y, Wang J, Shen L. Predictive biomarkers for the efficacy of cetuximab combined with cisplatin and capecitabine in advanced gastric or esophagogastric junction adenocarcinoma: a prospective multicenter phase 2 trial. Med Oncol 2014; 31:226. [PMID: 25234930 DOI: 10.1007/s12032-014-0226-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 09/02/2014] [Indexed: 12/17/2022]
Abstract
Cetuximab presents a potential therapy for gastric or esophagogastric junction adenocarcinoma. We aim to evaluate the predictive value of potential biomarkers of cetuximab efficacy. In this prospective phase 2 trial (NCT00477711), we enrolled untreated 47 patients with un-resectable or metastatic gastric or esophagogastric junction adenocarcinoma from seven sites in China. Patients with histologically confirmed adenocarcinoma were given cisplatin (80 mg/m2, triweekly), capecitabine (2,000 mg/m2, triweekly for 2 weeks), and cetuximab weekly (400 mg/m2 at first infusion and 250 mg/m2 subsequently). Sample size was calculated using Simon's two-stage design. The primary endpoint was the objective response rate (ORR). Secondary endpoints were progression-free survival (PFS), overall survival (OS), toxicity, and predictive biomarkers. The ORR was 53.2%, median PFS 5.2 months, and OS 10.8 months. The most frequent toxicities included neutropenia (25.0%), nausea/vomiting (11.5%), and rash/desquamation (9.6%). Patients with grade 2-4 rash achieved a significantly better ORR, longer PFS, and OS than those with grade 0-1 rash. Seven patients (15.9%) with epidermal growth factor receptor (EGFR) strong expression (3+) showed great tumor shrinkage, longer PFS (7.1 months), and OS (16.6 months). EGFR gene amplification was detected in four patients (8.5%), all of whom responded well. Compared to patients with lower levels of transforming growth factor-alpha (TGF-α), those with high levels showed better response and longer PFS (6.0 vs 2.7 months, p=0.001) and OS (12.9 vs 7.0 months, p=0.001). C+XP was well tolerated and effective for advanced gastric or esophagogastric junction adenocarcinoma as first-line therapy. Severity of skin rash and TGF-α level correlated with efficacy, and EGFR overexpression might predict cetuximab efficacy.
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Affiliation(s)
- Xiaotian Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Gastrointestinal Oncology, Peking University School of Oncology, Beijing Cancer Hospital and Institute, Beijing, 100142, China,
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Hou CH, Lin FL, Tong KB, Hou SM, Liu JF. Transforming growth factor alpha promotes osteosarcoma metastasis by ICAM-1 and PI3K/Akt signaling pathway. Biochem Pharmacol 2014; 89:453-63. [PMID: 24685520 DOI: 10.1016/j.bcp.2014.03.010] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 03/20/2014] [Accepted: 03/20/2014] [Indexed: 12/21/2022]
Abstract
Osteosarcoma is the most common primary malignancy of bone and is characterized by a high malignant and metastatic potential. Transforming growth factor alpha (TGF-α) is classified as the EGF (epidermal growth factor)-like family, which is involved in cancer cellular activities such as proliferation, motility, migration, adhesion and invasion abilities. However, the effect of TGF-α on human osteosarcoma is largely unknown. We found that TGF-α increased the cell migration and expression of intercellular adhesion molecule-1 (ICAM-1) in human osteosarcoma cells. Transfection of cells with ICAM-1 siRNA reduced TGF-α-mediated cell migration. We also found that the phosphatidylinositol 3'-kinase (PI3K)/Akt/NF-κB pathway was activated after TGF-α treatment, and TGF-α-induced expression of ICAM-1 and cell migration was inhibited by the specific inhibitors and siRNAs of PI3K, Akt, and NF-κB cascades. In addition, knockdown of TGF-α expression markedly decreased cell metastasis in vitro and in vivo. Our results indicate that TGF-α/EGFR interaction elicits PI3K and Akt activation, which in turn activates NF-κB, resulting in the expression of ICAM-1 and contributing the migration of human osteosarcoma cells.
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Affiliation(s)
- Chun-Han Hou
- Department of Orthopedic Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Feng-Ling Lin
- Department of Dermatology, Sijhih Cathay General Hospital, Taipei, Taiwan
| | - Kai-Biao Tong
- Veterinarian Central Laboratory, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Sheng-Mon Hou
- Department of Orthopedic Surgery, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan.
| | - Ju-Fang Liu
- Central Laboratory, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan.
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Ni W, Lin N, He H, Zhu J, Zhang Y. Lipopolysaccharide induces up-regulation of TGF-α through HDAC2 in a rat model of bronchopulmonary dysplasia. PLoS One 2014; 9:e91083. [PMID: 24595367 PMCID: PMC3942494 DOI: 10.1371/journal.pone.0091083] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 02/07/2014] [Indexed: 11/19/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is characterized by alveolar simplification with decreased alveolar number and increased airspace. Previous studies suggested that transforming growth factor-α (TGF-α) may contribute to arrested alveolar development in BPD. Histone deacetylases (HDACs) control cellular signaling and gene expression. HDAC2 is crucial for suppression of inflammatory gene expression. Here we investigated whether HDAC2 was involved in the arrest of alveolarization, as well as the ability of HDAC2 to regulate TGF-α expression in a rat model of BPD induced by intra-amniotic injection of lipopolysaccharide (LPS). Results showed that LPS exposure led to a suppression of both HDAC1 and HDAC2 expression and activity, induced TGF-α expression, and disrupted alveolar morphology. Mechanistic studies showed that overexpression of HDAC2, but not HDAC1, suppressed LPS-induced TGF-α expression. Moreover, the HDAC inhibitor TSA or downregulation of HDAC2 by siRNA both significantly increased TGF-α expression in cultured myofibroblasts. Finally, preservation of HDAC activity by theophylline treatment improved alveolar development and attenuated TGF-α release. Together, these findings indicate that attenuation of TGF-α-mediated effects in the lung by enhancing HDAC2 may have a therapeutic effect on treating BPD.
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Affiliation(s)
- Wensi Ni
- XinHua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ning Lin
- XinHua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Hua He
- XinHua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jianxing Zhu
- XinHua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yongjun Zhang
- XinHua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- MOE and Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China
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Lu XC, Yu W, Tao Y, Zhao PL, Li K, Tang LJ, Zheng JY, Li LX. Contribution of transforming growth factor α polymorphisms to nonsyndromic orofacial clefts: a HuGE review and meta-analysis. Am J Epidemiol 2014; 179:267-81. [PMID: 24243742 DOI: 10.1093/aje/kwt262] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We performed a meta-analysis of the association of transforming growth factor α gene (TGFA) polymorphisms with the risk of cleft lip with or without cleft palate (CL/P) or cleft palate (CP). In total, data from 29 studies were pooled for the following 3 polymorphisms: TGFA/TaqI, TGFA/BamHI, and TGFA/RasI in the TGFA gene. A fixed-effects or random-effects model was used to calculate the pooled odds ratios based on the results from the heterogeneity tests. A significantly increased CL/P or CP risk was observed in persons carrying a C2 allele at the TaqI polymorphism (odds ratio (OR) = 1.70, 95% confidence interval (CI): 1.41, 2.05) compared with those with a C1 allele (OR = 1.57, 95% CI: 1.23, 2.01). For the TGFA/BamHI polymorphism, carriers of the minor A1 allele had an estimated relative decrease in CL/P risk (OR = 0.44, 95% CI: 0.30, 0.64). These associations remained significant when only high-quality studies were included. However, no significant association was observed between the TGFA/RasI variant and CL/P risk. In summary, this meta-analysis provided a robust estimate of the positive association of the TGFA/TaqI polymorphism with both CL/P and CP and suggests that persons with an A1 allele may have a markedly decreased risk of CL/P.
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Zhao D, Zhai B, He C, Tan G, Jiang X, Pan S, Dong X, Wei Z, Ma L, Qiao H, Jiang H, Sun X. Upregulation of HIF-2α induced by sorafenib contributes to the resistance by activating the TGF-α/EGFR pathway in hepatocellular carcinoma cells. Cell Signal 2014; 26:1030-9. [PMID: 24486412 DOI: 10.1016/j.cellsig.2014.01.026] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 01/05/2014] [Accepted: 01/22/2014] [Indexed: 12/16/2022]
Abstract
Sorafenib, the first-line systemic drug for advanced hepatocellular carcinoma (HCC), has demonstrated limited benefits with very low response rates. Thus it is essential to investigate the underlying mechanisms for the resistance to sorafenib and seek potential strategy to enhance its efficacy. Hypoxic cells inside solid tumors are extremely resistant to therapies as their survival ability is increased due to the cellular adaptive response to hypoxia, which is controlled by hypoxia-inducible factor (HIF)-1 and HIF-2. Sorafenib inhibits HIF-1α synthesis, making the hypoxic response switch from HIF-1α- to HIF-2α-dependent pathways and providing a mechanism for more aggressive growth of tumors. The present study has demonstrated that upregulation of HIF-2α induced by sorafenib contributes to the resistance of hypoxic HCC cells by activating the transforming growth factor (TGF)-α/epidermal growth factor receptor (EGFR) pathway. Blocking the TGF-α/EGFR pathway by gefitinib, a specific EGFR inhibitor, reduced the activation of STAT (signal transducer and activator of transcription) 3, AKT and ERK (extracellular signal-regulated kinase), and synergized with sorafenib to inhibit proliferation and induce apoptosis of hypoxic HCC cells. Transfection of HIF-2α siRNA into HCC cells downregulated the expression of VEGF (vascular endothelial growth factor), cyclin D1, HIF-2α and TGF-α, and inhibited the activation of EGFR. HIF-2α siRNA inhibited the proliferation and promoted the apoptosis of HCC cells in vitro, and synergized with sorafenib to suppress the growth of HCC tumors in vivo. The results indicate that targeting HIF-2α-mediated activation of the TGF-α/EGFR pathway warrants further investigation as a potential strategy to enhance the efficacy of sorafenib for treating HCC.
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Affiliation(s)
- Dali Zhao
- The Hepatosplenic Surgery Center, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Bo Zhai
- The Hepatosplenic Surgery Center, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Changjun He
- Department of Thoracic Surgery, The Third Affiliated Hospital, Harbin Medical University, Harbin 150040, China
| | - Gang Tan
- The Hepatosplenic Surgery Center, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Xian Jiang
- The Hepatosplenic Surgery Center, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Shangha Pan
- The Hepatosplenic Surgery Center, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Xuesong Dong
- The Hepatosplenic Surgery Center, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Zheng Wei
- The Hepatosplenic Surgery Center, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Lixin Ma
- The Hepatosplenic Surgery Center, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Haiquan Qiao
- The Hepatosplenic Surgery Center, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Hongchi Jiang
- The Hepatosplenic Surgery Center, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Xueying Sun
- The Hepatosplenic Surgery Center, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China.
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O'Leary KA, Jallow F, Rugowski DE, Sullivan R, Sinkevicius KW, Greene GL, Schuler LA. Prolactin activates ERα in the absence of ligand in female mammary development and carcinogenesis in vivo. Endocrinology 2013; 154:4483-92. [PMID: 24064365 PMCID: PMC3836081 DOI: 10.1210/en.2013-1533] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Resistance of estrogen receptor positive (ERα+) breast cancers to antiestrogens is a major factor in the mortality of this disease. Although activation of ERα in the absence of ligand is hypothesized to contribute to this resistance, the potency of this mechanism in vivo is not clear. Epidemiologic studies have strongly linked prolactin (PRL) to both development of ERα+ breast cancer and resistance to endocrine therapies. Here we employed genetically modified mouse models to examine the ability of PRL and cross talk with TGFα to activate ERα, using a mutated ERα, ERα(G525L), which is refractory to endogenous estrogens. We demonstrate that PRL promotes pubertal ERα-dependent mammary ductal elongation and gene expression in the absence of estrogen, which are abrogated by the antiestrogen, ICI 182,780 (ICI). PRL and TGFα together reduce sensitivity to estrogen, and 30% of their combined stimulation of ductal proliferation is inhibited by ICI, implicating ligand-independent activation of ERα as a component of their interaction. However, PRL/TGFα-induced heterogeneous ERα+ tumors developed more rapidly in the presence of ICI and contained altered transcripts for surface markers associated with epithelial subpopulations and increased signal transducer and activator of transcription 5b expression. Together, these data support strong interactions between PRL and estrogen on multiple levels. Ligand-independent activation of ERα suggests that PRL may contribute to resistance to antiestrogen therapies. However, these studies also underscore ERα-mediated moderation of tumor phenotype. In light of the high expression of PRL receptors in ERα+ cancers, understanding the actions of PRL and cross talk with other oncogenic factors and ERα itself has important implications for therapeutic strategies.
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Affiliation(s)
- Kathleen A O'Leary
- Department of Comparative Biosciences, 2015 Linden Drive, University of Wisconsin-Madison, Madison, WI 53706.
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Llorente-Izquierdo C, Mayoral R, Cucarella C, Grau C, Alvarez MS, Flores JM, García-Palencia P, Agra N, Castro-Sánchez L, Boscá L, Martín-Sanz P, Casado M. Progression of liver oncogenesis in the double transgenic mice c-myc/TGF α is not enhanced by cyclooxygenase-2 expression. Prostaglandins Other Lipid Mediat 2013; 106:106-15. [PMID: 23579063 DOI: 10.1016/j.prostaglandins.2013.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 03/19/2013] [Accepted: 03/28/2013] [Indexed: 02/07/2023]
Abstract
Cyclooxygenase-2 (COX-2) has been associated with cell growth regulation, tissue remodeling and carcinogenesis. Overexpression of COX-2 in hepatocytes constitutes an ideal condition to evaluate the role of prostaglandins (PGs) in liver pathogenesis. The effect of COX-2-dependent PGs in genetic hepatocarcinogenesis has been investigated in triple c-myc/transforming growth factor α (TGF-α) transgenic mice that express human COX-2 in hepatocytes on a B6CBAxCD1xB6DBA2 background. Analysis of the contribution of COX-2-dependent PGs to the development of hepatocarcinogenesis, evaluated in this model, suggested a minor role of COX-2-dependent prostaglandins to liver oncogenesis as indicated by liver histopathology, morphometric analysis and specific markers of tumor progression. This allows concluding that COX-2 is insufficient for modifying the hepatocarcinogenesis course mediated by c-myc/TGF-α.
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Affiliation(s)
- Cristina Llorente-Izquierdo
- Instituto de Investigaciones Biomédicas Alberto Sols, CSIC-UAM Madrid, Arturo Duperier, 4, 28029 Madrid, Spain
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Bruells CS, Maes K, Rossaint R, Thomas D, Cielen N, Bleilevens C, Bergs I, Loetscher U, Dreier A, Gayan-Ramirez G, Behnke BJ, Weis J. Prolonged mechanical ventilation alters the expression pattern of angio-neogenetic factors in a pre-clinical rat model. PLoS One 2013; 8:e70524. [PMID: 23950950 PMCID: PMC3738548 DOI: 10.1371/journal.pone.0070524] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 06/19/2013] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVE Mechanical ventilation (MV) is a life saving intervention for patients with respiratory failure. Even after 6 hours of MV, diaphragm atrophy and dysfunction (collectively referred to as ventilator-induced diaphragmatic dysfunction, VIDD) occurs in concert with a blunted blood flow and oxygen delivery. The regulation of hypoxia sensitive factors (i.e. hypoxia inducible factor 1α, 2α (HIF-1α,-2α), vascular endothelial growth factor (VEGF)) and angio-neogenetic factors (angiopoietin 1-3, Ang) might contribute to reactive and compensatory alterations in diaphragm muscle. METHODS Male Wistar rats (n = 8) were ventilated for 24 hours or directly sacrificed (n = 8), diaphragm and mixed gastrocnemius muscle tissue was removed. Quantitative real time PCR and western blot analyses were performed to detect changes in angio-neogenetic factors and inflammatory markers. Tissues were stained using Isolectin (IB 4) to determine capillarity and calculate the capillary/fiber ratio. RESULTS MV resulted in up-regulation of Ang 2 and HIF-1α mRNA in both diaphragm and gastrocnemius, while VEGF mRNA was down-regulated in both tissues. HIF-2α mRNA was reduced in both tissues, while GLUT 4 mRNA was increased in gastrocnemius and reduced in diaphragm samples. Protein levels of VEGF, HIF-1α, -2α and 4 did not change significantly. Additionally, inflammatory cytokine mRNA (Interleukin (IL)-6, IL-1β and TNF α) were elevated in diaphragm tissue. CONCLUSION The results demonstrate that 24 hrs of MV and the associated limb disuse induce an up-regulation of angio-neogenetic factors that are connected to HIF-1α. Changes in HIF-1α expression may be due to several interactions occurring during MV.
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Affiliation(s)
- Christian S Bruells
- Department of Anesthesiology, University Hospital of the RWTH Aachen, Aachen, Germany.
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Lu Y, Liu Q, Xu W, Li Z, Jiang M, Li X, Zhao N, Liu W, Sui Y, Ma C, Feng W, Han W, Li J. TGFA and IRF6 contribute to the risk of nonsyndromic cleft lip with or without cleft palate in northeast China. PLoS One 2013; 8:e70754. [PMID: 23940636 PMCID: PMC3735505 DOI: 10.1371/journal.pone.0070754] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Accepted: 06/23/2013] [Indexed: 11/19/2022] Open
Abstract
Nonsyndromic cleft lip with or without cleft palate (NSCL/P) are common birth defects with a complex etiology. Multiple interacting loci and possible environmental factors influence the risk of NSCL/P. 12 single nucleotide polymorphisms (SNPs) in 7 candidate genes were tested using an allele-specific primer extension for case-control and case-parent analyses in northeast China in 236 unrelated patients, 185 mothers and 154 fathers, including 128 complete trios, and 400 control individuals. TGFA and IRF6 genes showed a significant association with NSCL/P. In IRF6, statistical evidence of an association between rs2235371 (p = 0.003), rs2013162 (p<0.0001) and NSCL/P was observed in case-control analyses. Family based association tests (FBATs) showed over-transmission of the C allele at the rs2235371 polymorphism (p = 0.007). In TGFA, associations between rs3771494, rs3771523 (G3822A), rs11466285 (T3851C) and NSCL/P were observed in case-control and FBAT analyses. Associations between other genes (BCL3, TGFB3, MTHFR, PVRL1 and SUMO1) and NSCL/P were not detected.
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Affiliation(s)
- Yongping Lu
- Key Laboratory of Reproductive Health, Liaoning Province Research Institute of Family Planning, Shenyang, China
| | - Qiang Liu
- Department of Oral-Maxillofacial Surgery and Plastic Surgery, School of Stomatology, China Medical University, Shenyang, China
| | - Wei Xu
- Key Laboratory of Reproductive Health, Liaoning Province Research Institute of Family Planning, Shenyang, China
| | - Zengjian Li
- Department of Oral-Maxillofacial Surgery and Plastic Surgery, School of Stomatology, China Medical University, Shenyang, China
| | - Miao Jiang
- Key Laboratory of Reproductive Health, Liaoning Province Research Institute of Family Planning, Shenyang, China
| | - Xuefu Li
- Key Laboratory of Reproductive Health, Liaoning Province Research Institute of Family Planning, Shenyang, China
| | - Ning Zhao
- Key Laboratory of Reproductive Health, Liaoning Province Research Institute of Family Planning, Shenyang, China
| | - Wei Liu
- Key Laboratory of Reproductive Health, Liaoning Province Research Institute of Family Planning, Shenyang, China
| | - Yu Sui
- Key Laboratory of Reproductive Health, Liaoning Province Research Institute of Family Planning, Shenyang, China
| | - Chao Ma
- Key Laboratory of Reproductive Health, Liaoning Province Research Institute of Family Planning, Shenyang, China
| | - Wenhua Feng
- Key Laboratory of Reproductive Health, Liaoning Province Research Institute of Family Planning, Shenyang, China
| | - Weitian Han
- Key Laboratory of Reproductive Health, Liaoning Province Research Institute of Family Planning, Shenyang, China
- * E-mail: (JL); (WH)
| | - Jianxin Li
- Key Laboratory of Reproductive Health, Liaoning Province Research Institute of Family Planning, Shenyang, China
- * E-mail: (JL); (WH)
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Xu Y, Tokar EJ, Person RJ, Orihuela RG, Ngalame NNO, Waalkes MP. Recruitment of normal stem cells to an oncogenic phenotype by noncontiguous carcinogen-transformed epithelia depends on the transforming carcinogen. Environ Health Perspect 2013; 121:944-950. [PMID: 23687063 PMCID: PMC3734505 DOI: 10.1289/ehp.1306714] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Accepted: 05/16/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND Cancer stem cells (CSCs) drive tumor initiation, progression, and metastasis. The microenvironment is critical to the fate of CSCs. We have found that a normal stem cell (NSC) line from human prostate (WPE-stem) is recruited into CSC-like cells by nearby, but noncontiguous, arsenic-transformed isogenic malignant epithelial cells (MECs). OBJECTIVE It is unknown whether this recruitment of NSCs into CSCs by noncontact co-culture is specific to arsenic-transformed MECs. Thus, we used co-culture to examine the effects of neighboring noncontiguous cadmium-transformed MECs (Cd-MECs) and N-methyl-N-nitrosourea-transformed MECs (MNU-MECs) on NSCs. RESULTS After 2 weeks of noncontact Cd-MEC co-culture, NSCs showed elevated metalloproteinase-9 (MMP-9) and MMP-2 secretion, increased invasiveness, increased colony formation, decreased PTEN expression, and formation of aggressive, highly branched duct-like structures from single cells in Matrigel, all characteristics typical of cancer cells. These oncogenic characteristics did not occur in NSCs co-cultured with MNU-MECs. The NSCs co-cultured with Cd-MECs retained self-renewal capacity, as evidenced by multiple passages (> 3) of structures formed in Matrigel. Cd-MEC-co-cultured NSCs also showed molecular (increased VIM, SNAIL1, and TWIST1 expression; decreased E-CAD expression) and morphologic evidence of epithelial-to-mesenchymal transition typical for conversion to CSCs. Dysregulated expression of SC-renewal genes, including ABCG2, OCT-4, and WNT-3, also occurred in NSCs during oncogenic transformation induced by noncontact co-culture with Cd-MECs. CONCLUSIONS These data indicate that Cd-MECs can recruit nearby NSCs into a CSC-like phenotype, but MNU-MECs do not. Thus, the recruitment of NSCs into CSCs by nearby MECs is dependent on the carcinogen originally used to malignantly transform the MECs.
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Affiliation(s)
- Yuanyuan Xu
- National Toxicology Program Laboratory, Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, USA
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McDermott SM, Davis I. Drosophila Hephaestus/polypyrimidine tract binding protein is required for dorso-ventral patterning and regulation of signalling between the germline and soma. PLoS One 2013; 8:e69978. [PMID: 23894566 PMCID: PMC3720928 DOI: 10.1371/journal.pone.0069978] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Accepted: 06/14/2013] [Indexed: 02/05/2023] Open
Abstract
In the Drosophila oocyte, gurken (grk) mRNA encodes a secreted TGF-α signal that specifies the future embryonic dorso-ventral axes by altering the fate of the surrounding epithelial follicle cells. We previously identified a number of RNA binding proteins that associate specifically with the 64 nucleotide grk localization signal, including the Drosophila orthologue of polypyrimidine tract-binding protein (PTB), Hephaestus (Heph). To test whether Heph is required for correct grk mRNA or protein function, we used immunoprecipitation to validate the association of Heph with grk mRNA and characterized the heph mutant phenotype. We found that Heph is a component of grk mRNP complexes but heph germline clones show that Heph is not required for grk mRNA localization. Instead, we identify a novel function for Heph in the germline and show that it is required for proper Grk protein localization. Furthermore, we show that Heph is required in the oocyte for the correct organization of the actin cytoskeleton and dorsal appendage morphogenesis. Our results highlight a requirement for an mRNA binding protein in the localization of Grk protein, which is independent of mRNA localization, and we propose that Heph is required in the germline for efficient Grk signalling to the somatic follicle cells during dorso-ventral patterning.
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Affiliation(s)
- Suzanne M. McDermott
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
- * E-mail: (SMM); (ID)
| | - Ilan Davis
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
- * E-mail: (SMM); (ID)
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Zhu C, Li J, Ding Q, Cheng G, Zhou H, Tao L, Cai H, Li P, Cao Q, Ju X, Meng X, Qin C, Hua L, Shao P, Yin C. miR-152 controls migration and invasive potential by targeting TGFα in prostate cancer cell lines. Prostate 2013; 73:1082-9. [PMID: 23460133 DOI: 10.1002/pros.22656] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Accepted: 01/25/2013] [Indexed: 11/11/2022]
Abstract
BACKGROUND MicroRNAs (miRNAs) are a class of short non-coding RNAs that function in diverse biological processes. Aberrant miR-152 expression has been frequently reported in various malignant tumors. However, the mechanism of miR-152 in prostate cancer (PCa) remains unclear. This study aims to determine the function of miR-152 in PCa cells and identify the novel molecular targets regulated by miR-152. METHODS The expression levels of transforming growth factor-alpha (TGFα) were determined in three samples of PCa and adjacent non-tumorous tissues by Western blot analysis. miR-152 levels in 48 primary PCa and 15 non-malignant tissue samples were measured by qRT-PCR. The effects of forced miR-152 expression or TGFα knockdown on PCa cells were evaluated by cell migration and invasion assays, as well as Western blot analysis. Dual-luciferase reporter assay was used to identify binding sites between miR-152 and TGFα 3'-UTR. RESULTS TGFα was upregulated in PCa tissue samples compared with that in adjacent normal ones. miR-152 expression was significantly decreased in primary PCa samples compared with that in non-malignant samples. Patients with Gleason scores >7 exhibited lower miR-152 levels than those with lower scores. Moreover, low miR-152 expression is correlated with advanced pathological T-stages. Forced miR-152 expression or TGFα knockdown significantly reduced the migratory and invasive capabilities of PCa cells in vitro. TGFα is a direct target gene of miR-152. CONCLUSIONS Our findings suggest that miR-152 can act as a tumor suppressor that targets TGFα. miR-152 is a promising molecular target that inhibits PCa cell migration and invasion.
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Affiliation(s)
- Chen Zhu
- State Key Laboratory of Reproductive Medicine, Department of Urology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Wang JC, Wang PY, Chen HI, Wu KL, Pai LM, Nee TE. Lie Group Analysis of the Photo-Induced Fluorescence of Drosophila Oogenesis with the Asymmetrically Localized Gurken Protein. PLoS One 2013; 8:e65143. [PMID: 23840317 PMCID: PMC3686808 DOI: 10.1371/journal.pone.0065143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 04/22/2013] [Indexed: 11/18/2022] Open
Abstract
Lie group analysis of the photo-induced fluorescence of Drosophila oogenesis with the asymmetrically localized Gurken protein has been performed systematically to assess the roles of ligand-receptor complexes in follicle cells. The (2×2) matrix representations resulting from the polarized tissue spectra were employed to characterize the asymmetrical Gurken distributions. It was found that the fluorescence of the wild-type egg shows the Lie point symmetry X 23 at early stages of oogenesis. However, due to the morphogen regulation by intracellular proteins and extracellular proteins, the fluorescence of the embryogenesis with asymmetrically localized Gurken expansions exhibits specific symmetry features: Lie point symmetry Z 1 and Lie point symmetry X 1. The novel approach developed herein was successfully used to validate that the invariant-theoretical characterizations are consonant with the observed asymmetric fluctuations during early embryological development.
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Affiliation(s)
- Jen-Cheng Wang
- Graduate Institute of Electro-Optical Engineering and Department of Electronic Engineering, Chang Gung University, Kwei-Shan, Tao-Yuan 333, Taiwan, Republic of China
| | - Pei-Yu Wang
- Graduate Institute of Biomedical Sciences, Chang Gung University, Kwei-Shan, Tao-Yuan 333, Taiwan, Republic of China
| | - Hung-Ing Chen
- Graduate Institute of Electro-Optical Engineering and Department of Electronic Engineering, Chang Gung University, Kwei-Shan, Tao-Yuan 333, Taiwan, Republic of China
| | - Kai-Ling Wu
- Graduate Institute of Electro-Optical Engineering and Department of Electronic Engineering, Chang Gung University, Kwei-Shan, Tao-Yuan 333, Taiwan, Republic of China
| | - Li-Mei Pai
- Graduate Institute of Biomedical Sciences and Department of Biochemistry, Chang Gung University, Kwei-Shan, Tao-Yuan 333, Taiwan, Republic of China
| | - Tzer-En Nee
- Graduate Institute of Electro-Optical Engineering and Department of Electronic Engineering, Chang Gung University, Kwei-Shan, Tao-Yuan 333, Taiwan, Republic of China
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Ledda M, Megiorni F, Pozzi D, Giuliani L, D’Emilia E, Piccirillo S, Mattei C, Grimaldi S, Lisi A. Non ionising radiation as a non chemical strategy in regenerative medicine: Ca(2+)-ICR "In Vitro" effect on neuronal differentiation and tumorigenicity modulation in NT2 cells. PLoS One 2013; 8:e61535. [PMID: 23585910 PMCID: PMC3621667 DOI: 10.1371/journal.pone.0061535] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 03/11/2013] [Indexed: 11/18/2022] Open
Abstract
In regenerative medicine finding a new method for cell differentiation without pharmacological treatment or gene modification and minimal cell manipulation is a challenging goal. In this work we reported a neuronal induced differentiation and consequent reduction of tumorigenicity in NT2 human pluripotent embryonal carcinoma cells exposed to an extremely low frequency electromagnetic field (ELF-EMF), matching the cyclotron frequency corresponding to the charge/mass ratio of calcium ion (Ca(2+)-ICR). These cells, capable of differentiating into post-mitotic neurons following treatment with Retinoic Acid (RA), were placed in a solenoid and exposed for 5 weeks to Ca(2+)-ICR. The solenoid was installed in a μ-metal shielded room to avoid the effect of the geomagnetic field and obtained totally controlled and reproducible conditions. Contrast microscopy analysis reveled, in the NT2 exposed cells, an important change in shape and morphology with the outgrowth of neuritic-like structures together with a lower proliferation rate and metabolic activity alike those found in the RA treated cells. A significant up-regulation of early and late neuronal differentiation markers and a significant down-regulation of the transforming growth factor-α (TGF-α) and the fibroblast growth factor-4 (FGF-4) were also observed in the exposed cells. The decreased protein expression of the transforming gene Cripto-1 and the reduced capability of the exposed NT2 cells to form colonies in soft agar supported these last results. In conclusion, our findings demonstrate that the Ca(2+)-ICR frequency is able to induce differentiation and reduction of tumorigenicity in NT2 exposed cells suggesting a new potential therapeutic use in regenerative medicine.
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Affiliation(s)
- Mario Ledda
- Institute of Translational Pharmacology, National Research Council, Rome, Italy
| | - Francesca Megiorni
- Department of Experimental Medicine, University of Rome “Sapienza”, Rome, Italy
| | - Deleana Pozzi
- Institute of Translational Pharmacology, National Research Council, Rome, Italy
- Department of Experimental Medicine, University of Rome “Sapienza”, Rome, Italy
| | - Livio Giuliani
- Department of Productive Plants and Interaction with the Environment, National Institute for Occupational Safety and Prevention, Rome, Italy
| | - Enrico D’Emilia
- Department of Productive Plants and Interaction with the Environment, National Institute for Occupational Safety and Prevention, Rome, Italy
| | - Sara Piccirillo
- Institute of Translational Pharmacology, National Research Council, Rome, Italy
| | - Cristiana Mattei
- Institute of Translational Pharmacology, National Research Council, Rome, Italy
| | - Settimio Grimaldi
- Institute of Translational Pharmacology, National Research Council, Rome, Italy
| | - Antonella Lisi
- Institute of Translational Pharmacology, National Research Council, Rome, Italy
- * E-mail:
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Oberoi P, Jabulowsky RA, Bähr-Mahmud H, Wels WS. EGFR-targeted granzyme B expressed in NK cells enhances natural cytotoxicity and mediates specific killing of tumor cells. PLoS One 2013; 8:e61267. [PMID: 23573299 PMCID: PMC3616035 DOI: 10.1371/journal.pone.0061267] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 03/06/2013] [Indexed: 12/04/2022] Open
Abstract
Natural killer (NK) cells are highly specialized effectors of the innate immune system that hold promise for adoptive cancer immunotherapy. Their cell killing activity is primarily mediated by the pro-apoptotic serine protease granzyme B (GrB), which enters targets cells with the help of the pore-forming protein perforin. We investigated expression of a chimeric GrB fusion protein in NK cells as a means to augment their antitumoral activity. For selective targeting to tumor cells, we fused the epidermal growth factor receptor (EGFR) peptide ligand transforming growth factor α (TGFα) to human pre-pro-GrB. Established human NKL natural killer cells transduced with a lentiviral vector expressed this GrB-TGFα (GrB-T) molecule in amounts comparable to endogenous wildtype GrB. Activation of the genetically modified NK cells by cognate target cells resulted in the release of GrB-T together with endogenous granzymes and perforin, which augmented the effector cells' natural cytotoxicity against NK-sensitive tumor cells. Likewise, GrB-T was released into the extracellular space upon induction of degranulation with PMA and ionomycin. Secreted GrB-T fusion protein displayed specific binding to EGFR-overexpressing tumor cells, enzymatic activity, and selective target cell killing in the presence of an endosomolytic activity. Our data demonstrate that ectopic expression of a targeted GrB fusion protein in NK cells is feasible and can enhance antitumoral activity of the effector cells.
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Affiliation(s)
- Pranav Oberoi
- Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus, Frankfurt am Main, Germany
| | - Robert A. Jabulowsky
- Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus, Frankfurt am Main, Germany
| | - Hayat Bähr-Mahmud
- Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus, Frankfurt am Main, Germany
| | - Winfried S. Wels
- Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus, Frankfurt am Main, Germany
- * E-mail:
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Yuan Y, Yeh LK, Liu H, Yamanaka O, Hardie WD, Kao WWY, Liu CY. Targeted overexpression of TGF-α in the corneal epithelium of adult transgenic mice induces changes in anterior segment morphology and activates noncanonical Wnt signaling. Invest Ophthalmol Vis Sci 2013; 54:1829-37. [PMID: 23412089 PMCID: PMC3626521 DOI: 10.1167/iovs.12-11477] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Accepted: 02/07/2013] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Transforming growth factor-alpha (TGF-α) transduces its signal through the epidermal growth factor receptor and is essential for corneal epithelial homeostasis. Previous studies have demonstrated that overexpression of TGF-α in the developing eye leads to anterior segment dysgenesis. However, the underlying mechanisms remain unclear. Here we examined the effects of TGF-α overexpression on adult ocular surface homeostasis. METHODS Binary Tet-On transgenic Krt12(rtTA)/tet-O-TGF-α mice were subjected to doxycycline (Dox) induction to overexpress TGF-α in the corneal epithelium. Intraocular pressure (IOP) was measured by noninvasive tonometry. The enucleated eyes of the experimental mice were subjected to histopathology, immunohistochemistry, and biochemistry examination. RESULTS Histologic and immunofluorescent examination showed that double-transgenic mice overexpressing TGF-α manifested peripheral anterior synechiae. Elevation of IOP, activation of glial cells, and loss of retinal ganglion cells were also observed. Quantitative real-time PCR revealed that the expressions of genes (RXRα, PITX2, and FOXC1) related to anterior segment dysgenesis were downregulated. Canonical Wnt signaling was suppressed, whereas noncanonical Wnt ligands (Wnt4 and Wnt5a) were upregulated. Increased myosin light chain phosphorylation suggested that noncanonical Wnt signaling is activated in affected eyes. CONCLUSIONS Overexpression of TGF-α in the corneal epithelium induces changes in anterior segment morphology. Corneal endothelial abnormalities are associated with the activation of the noncanonical Wnt and RhoA/ROCK signaling axis, indicating a potential application of RhoA/ROCK inhibitors as a therapeutic strategy for certain types of secondary angle-closure glaucoma.
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Affiliation(s)
- Yong Yuan
- From the
Crawley Vision Research Laboratory, Department of Ophthalmology, College of Medicine, University of Cincinnati, Cincinnati, Ohio; the
| | - Lung-Kun Yeh
- Department of Ophthalmology, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Linko, Taiwan; and
| | - Hongshan Liu
- From the
Crawley Vision Research Laboratory, Department of Ophthalmology, College of Medicine, University of Cincinnati, Cincinnati, Ohio; the
| | - Osamu Yamanaka
- From the
Crawley Vision Research Laboratory, Department of Ophthalmology, College of Medicine, University of Cincinnati, Cincinnati, Ohio; the
| | - William D. Hardie
- Divisions of Pulmonary Biology and Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Winston W.-Y. Kao
- From the
Crawley Vision Research Laboratory, Department of Ophthalmology, College of Medicine, University of Cincinnati, Cincinnati, Ohio; the
| | - Chia-Yang Liu
- From the
Crawley Vision Research Laboratory, Department of Ophthalmology, College of Medicine, University of Cincinnati, Cincinnati, Ohio; the
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Kimura R, Okouchi M, Kato T, Imaeda K, Okayama N, Asai K, Joh T. Epidermal growth factor receptor transactivation is necessary for glucagon-like peptide-1 to protect PC12 cells from apoptosis. Neuroendocrinology 2013; 97:300-8. [PMID: 23147408 DOI: 10.1159/000345529] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Accepted: 10/10/2012] [Indexed: 11/19/2022]
Abstract
AIM Patients with long-standing diabetes commonly develop diabetic encephalopathy, which is characterized by cognitive impairment and dementia. To identify potential treatments for diabetic encephalopathy, we focused on the protective action of glucagon-like peptide-1 (GLP-1) against neural cell apoptosis. In this study, we evaluated whether exposure of cells to GLP-1 leads to epidermal growth factor receptor (EGFR) transactivation and signaling through the PI3K/Akt/mTOR/GCLc/redox pathway, which we previously reported. METHODS We monitored the phosphorylation of EGFR and Akt in PC12 cells exposed to MG and GLP-1 that had been first incubated in the presence or absence of various inhibitors of EGFR transactivation. RESULTS DAPI staining revealed that pretreatment of cells with BiPS, HB-EGF and anti-TGF-α neutralization antibodies or AG1478 abrogated the ability of GLP-1 to rescue cells from MG-induced apoptosis. We show that exposure of PC12 cells to GLP-1 induces EGFR phosphorylation and that this effect was inhibited by prior exposure of the cells to BiPS, HB-EGF and anti-TGF-α neutralization antibodies or AG1478. Interestingly, these agents also diminished the capacity of GLP-1 to protect cells from MG-induced apoptosis. Moreover, these agents reduced GLP-1-induced phosphorylation of Akt. EGF itself also protected the cells from MG-induced apoptosis and induced phosphorylation of Akt, which was inhibited by LY294002. CONCLUSION The neuroprotective effects of GLP-1 against MG-induced apoptosis are mediated by EGFR transactivation, which signals through the PI3K/Akt/mTOR/GCLc/redox pathway in PC12 cells.
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Affiliation(s)
- Ryosuke Kimura
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan. CQR00501 @ nifty.com
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Wang C, Lv X, Jiang C, Cordes CM, Fu L, Lele SM, Davis JS. Transforming growth factor alpha (TGFα) regulates granulosa cell tumor (GCT) cell proliferation and migration through activation of multiple pathways. PLoS One 2012; 7:e48299. [PMID: 23155381 PMCID: PMC3498304 DOI: 10.1371/journal.pone.0048299] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Accepted: 09/28/2012] [Indexed: 12/18/2022] Open
Abstract
Granulosa cell tumors (GCTs) are the most common ovarian estrogen producing tumors, leading to symptoms of excessive estrogen such as endometrial hyperplasia and endometrial adenocarcinoma. These tumors have malignant potential and often recur. The etiology of GCT is unknown. TGFα is a potent mitogen for many different cells. However, its function in GCT initiation, progression and metastasis has not been determined. The present study aims to determine whether TGFα plays a role in the growth of GCT cells. KGN cells, which are derived from an invasive GCT and have many features of normal granulosa cells, were used as the cellular model. Immunohistochemistry, Western blot and RT-PCR results showed that the ErbB family of receptors is expressed in human GCT tissues and GCT cell lines. RT-PCR results also indicated that TGFα and EGF are expressed in the human granulosa cells and the GCT cell lines, suggesting that TGFα might regulate GCT cell function in an autocrine/paracrine manner. TGFα stimulated KGN cell DNA synthesis, cell proliferation, cell viability, cell cycle progression, and cell migration. TGFα rapidly activated EGFR/PI3K/Akt and mTOR pathways, as indicated by rapid phosphorylation of Akt, TSC2, Rictor, mTOR, P70S6K and S6 proteins following TGFα treatment. TGFα also rapidly activated the EGFR/MEK/ERK pathway, and P38 MAPK pathways, as indicated by the rapid phosphorylation of EGFR, MEK, ERK1/2, P38, and CREB after TGFα treatment. Whereas TGFα triggered a transient activation of Akt, it induced a sustained activation of ERK1/2 in KGN cells. Long-term treatment of KGN cells with TGFα resulted in a significant increase in cyclin D2 and a decrease in p27/Kip1, two critical regulators of granulosa cell proliferation and granulosa cell tumorigenesis. In conclusion, TGFα, via multiple signaling pathways, regulates KGN cell proliferation and migration and may play an important role in the growth and metastasis of GCTs.
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Affiliation(s)
- Cheng Wang
- Departments of Obstetrics and Gynecology, Olson Center for Women's Health, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
- * E-mail: (CW); (JSD)
| | - Xiangmin Lv
- Departments of Obstetrics and Gynecology, Olson Center for Women's Health, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
- Key Laboratory of Protein Chemistry and Developmental Biology of Education Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Chao Jiang
- Departments of Obstetrics and Gynecology, Olson Center for Women's Health, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Crystal M. Cordes
- Departments of Obstetrics and Gynecology, Olson Center for Women's Health, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Lan Fu
- Departments of Obstetrics and Gynecology, Olson Center for Women's Health, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Subodh M. Lele
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - John S. Davis
- Departments of Obstetrics and Gynecology, Olson Center for Women's Health, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
- VA Medical Center, Omaha, Nebraska, United States of America
- * E-mail: (CW); (JSD)
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