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Arndt P, Turkowski K, Cekay M, Eul B, Grimminger F, Savai R. Endothelin and the tumor microenvironment: a finger in every pie. Clin Sci (Lond) 2024; 138:617-634. [PMID: 38785410 PMCID: PMC11130555 DOI: 10.1042/cs20240426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/07/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024]
Abstract
The tumor microenvironment (TME) plays a central role in the development of cancer. Within this complex milieu, the endothelin (ET) system plays a key role by triggering epithelial-to-mesenchymal transition, causing degradation of the extracellular matrix and modulating hypoxia response, cell proliferation, composition, and activation. These multiple effects of the ET system on cancer progression have prompted numerous preclinical studies targeting the ET system with promising results, leading to considerable optimism for subsequent clinical trials. However, these clinical trials have not lived up to the high expectations; in fact, the clinical trials have failed to demonstrate any substantiated benefit of targeting the ET system in cancer patients. This review discusses the major and recent advances of the ET system with respect to TME and comments on past and ongoing clinical trials of the ET system.
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Affiliation(s)
- Philipp F. Arndt
- Lung Microenvironmental Niche in Cancerogenesis, Institute for Lung Health (ILH), Justus Liebig University, Giessen, Germany
- Department of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Centre (UGMLC), Member of the Cardio-Pulmonary Institute (CPI), Member of the German Centre for Lung Research (DZL), Giessen, Germany
- Max Planck Institute for Heart and Lung Research, Member of the DZL, Member of the CPI, Bad Nauheim, Germany
| | - Kati Turkowski
- Lung Microenvironmental Niche in Cancerogenesis, Institute for Lung Health (ILH), Justus Liebig University, Giessen, Germany
- Max Planck Institute for Heart and Lung Research, Member of the DZL, Member of the CPI, Bad Nauheim, Germany
| | - Michael J. Cekay
- Lung Microenvironmental Niche in Cancerogenesis, Institute for Lung Health (ILH), Justus Liebig University, Giessen, Germany
- Department of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Centre (UGMLC), Member of the Cardio-Pulmonary Institute (CPI), Member of the German Centre for Lung Research (DZL), Giessen, Germany
| | - Bastian Eul
- Department of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Centre (UGMLC), Member of the Cardio-Pulmonary Institute (CPI), Member of the German Centre for Lung Research (DZL), Giessen, Germany
| | - Friedrich Grimminger
- Lung Microenvironmental Niche in Cancerogenesis, Institute for Lung Health (ILH), Justus Liebig University, Giessen, Germany
- Department of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Centre (UGMLC), Member of the Cardio-Pulmonary Institute (CPI), Member of the German Centre for Lung Research (DZL), Giessen, Germany
| | - Rajkumar Savai
- Lung Microenvironmental Niche in Cancerogenesis, Institute for Lung Health (ILH), Justus Liebig University, Giessen, Germany
- Department of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Centre (UGMLC), Member of the Cardio-Pulmonary Institute (CPI), Member of the German Centre for Lung Research (DZL), Giessen, Germany
- Max Planck Institute for Heart and Lung Research, Member of the DZL, Member of the CPI, Bad Nauheim, Germany
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Chen L, Lu Y, Zhao M, Xu J, Wang Y, Xu Q, Cao Y, Liu H. A non-canonical role of endothelin converting enzyme 1 (ECE1) in promoting lung cancer development via directly targeting protein kinase B (AKT). J Gene Med 2024; 26:e3612. [PMID: 37897251 DOI: 10.1002/jgm.3612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/19/2023] [Accepted: 09/25/2023] [Indexed: 10/30/2023] Open
Abstract
BACKGROUND Lung cancer is the second most common malignancy in the world, and lung adenocarcinoma (LUAD) in particular is the leading cause of cancer death worldwide. Endothelin converting enzyme 1 (ECE1) is a membrane-bound metalloprotease involved in endothelin-1 (ET-1) processing and regulates vasoconstriction. However, very few studies have reported the involvement of ECE1 in regulating tumor cell proliferation, and the mechanism remains poorly understood. Therefore, we aimed to determine the role of ECE1 in lung cancer development. METHODS The Cancer Genome Atlas database and Kaplan-Meier plotter were used to assess the association between ECE1 and lung cancer. The expression of ECE1 was detected using immunohistochemistry staining and western blotting. A variety of in vitro assays were performed to evaluate the effects of ECE1 on the colony formation, proliferation, migration and invasion using ECE1 knockdown lung cancer cells. The gene expression profiles regulated by ECE1 were investigated by RNA sequencing. An immunoprecipitation assay and immunofluorescence assay were used to evaluate the mechanism underlying the regulatory effect of ECE1 on protein kinase B (AKT). The effect of ECE1 on tumor development was assessed by xenografted lung cancer cells in either C57BL/6 mice or nude mice. RESULTS ECE1 was upregulated in LUAD and correlated with the poor prognosis of patients with LUAD. Functional studies showed that knockdown of ECE1 retarded the progression of tumors formed by lung cancer cells at least partly by inhibiting tumor cell proliferation. Moreover, ECE1 accelerated tumor cell proliferation through promoting AKT activation dispensable of its canonical target ET-1. Mechanically, ECE1 interacted with the pleckstrin homology (PH) domain of AKT and facilitated its translocation to the plasma membrane for activation. Furthermore, the inhibition of AKT activity counteracted the lung cancer cell growth inhibition observed both in vitro and in xenografts caused by ECE1 suppression. CONCLUSIONS The present study reveals a non-canonical function of ECE1 in regulating AKT activation and cell proliferation, which provides the basis for the development of a novel strategy for the intervention of cancer including LUAD by abrogating ECE1-AKT signaling.
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Affiliation(s)
- Li Chen
- Central Laboratory, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yikai Lu
- Central Laboratory, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Mengmeng Zhao
- Research Center of Translational Medicine, Jinan Central Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Junfang Xu
- Central Laboratory, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yan Wang
- Central Laboratory, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Qinghua Xu
- Department of Radiation Oncology, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Yajuan Cao
- Department of Integrated Traditional Chinese and Western Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China
| | - Haipeng Liu
- Central Laboratory, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
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Cancer Stem Cell and Aggressiveness Traits Are Promoted by Stable Endothelin-Converting Enzyme-1c in Glioblastoma Cells. Cells 2023; 12:cells12030506. [PMID: 36766848 PMCID: PMC9914402 DOI: 10.3390/cells12030506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/17/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
Glioblastoma (GBM) is the most common and aggressive type of brain tumor due to its elevated recurrence following treatments. This is mainly mediated by a subpopulation of cells with stemness traits termed glioblastoma stem-like cells (GSCs), which are extremely resistant to anti-neoplastic drugs. Thus, an advancement in the understanding of the molecular processes underlying GSC occurrence should contribute significantly towards progress in reducing aggressiveness. High levels of endothelin-converting enzyme-1 (ECE1), key for endothelin-1 (ET-1) peptide activation, have been linked to the malignant progression of GBM. There are four known isoforms of ECE1 that activate ET-1, which only differ in their cytoplasmic N-terminal sequences. Isoform ECE1c is phosphorylated at Ser-18 and Ser-20 by protein kinase CK2, which increases its stability and hence promotes aggressiveness traits in colon cancer cells. In order to study whether ECE1c exerts a malignant effect in GBM, we designed an ECE1c mutant by switching a putative ubiquitination lysine proximal to the phospho-serines Lys-6-to-Arg (i.e., K6R). This ECE1cK6R mutant was stably expressed in U87MG, T98G, and U251 GBM cells, and their behavior was compared to either mock or wild-type ECE1c-expressing clone cells. ECE1cK6R behaved as a highly stable protein in all cell lines, and its expression promoted self-renewal and the enrichment of a stem-like population characterized by enhanced neurospheroid formation, as well as increased expression of stem-like surface markers. These ECE1cK6R-derived GSC-like cells also displayed enhanced resistance to the GBM-related chemotherapy drugs temozolomide and gemcitabine and increased expression of the ABCG2 efflux pump. In addition, ECE1cK6R cells displayed enhanced metastasis-associated traits, such as the modulation of adhesion and the enhancement of cell migration and invasion. In conclusion, the acquisition of a GSC-like phenotype, together with heightened chemoresistance and invasiveness traits, allows us to suggest phospho-ECE1c as a novel marker for poor prognosis as well as a potential therapeutic target for GBM.
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Potapov AY, Polikarchuk VA, Paponov BV, Ledeneva IV, Stolpovskaya NV, Kryl’skii DV, Shikhaliev KS. Three-Component Condencations of 3-Amino-1,2,4-triazoles, Methyl 3-(2-Cycloamino-4-methylpyrimidin-5-yl)-3-oxopropionoates, and a Series of C1 Synthons as a Convenient Approach to Pyrimidin-5-yl-1,2,4-triazolo[1,5-a]pyrimidines. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021020123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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He Y, Yang J, Liu Q, Zhang X, Fan X. Synthesis of β-Methylsulfonylated N-Heterocycles from Saturated Cyclic Amines with the Insertion of Sulfur Dioxide. J Org Chem 2020; 85:15600-15609. [DOI: 10.1021/acs.joc.0c02368] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yan He
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Environment, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jintao Yang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Environment, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Qimeng Liu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Environment, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Environment, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Environment, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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Sadanandan S, Gupta DK. Changing stereoselectivity and regioselectivity in copper( i)-catalyzed 5- exo cyclization by chelation and rigidity in aminoalkyl radicals: synthesis towards diverse bioactive N-heterocycles. NEW J CHEM 2020. [DOI: 10.1039/c9nj05166j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Chelation, rigidity and carbon-radical positions in aminoalkyl precursors disturb the usual 2,4-trans diastereoselectivity and 5-exo mode in Cu(i)-catalyzed ATRC.
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Smolobochkin AV, Rizbayeva TS, Gazizov AS, Voronina JK, Chugunova EA, Akylbekov NI, Appazov NO, Burilov AR, Pudovik MA. Synthesis of 2-(pyrrolidin-1-yl)pyrimidines by reactions of N-(4,4-diethoxybutyl)pyrimidin-2-amine with (hetero)aromatic C-nucleophiles. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02489-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Tapia JC, Niechi I. Endothelin-converting enzyme-1 in cancer aggressiveness. Cancer Lett 2019; 452:152-157. [DOI: 10.1016/j.canlet.2019.03.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 03/20/2019] [Accepted: 03/20/2019] [Indexed: 12/29/2022]
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Wu CF, Lee CT, Kuo YH, Chen TH, Chang CY, Chang IW, Wang WL. High endothelin-converting enzyme-1 expression independently predicts poor survival of patients with esophageal squamous cell carcinoma. Tumour Biol 2017; 39:1010428317725922. [DOI: 10.1177/1010428317725922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Patients with esophageal squamous cell carcinoma have poor survival and high recurrence rate, thus an effective prognostic biomarker is needed. Endothelin-converting enzyme-1 is responsible for biosynthesis of endothelin-1, which promotes growth and invasion of human cancers. The role of endothelin-converting enzyme-1 in esophageal squamous cell carcinoma is still unknown. Therefore, this study investigated the significance of endothelin-converting enzyme-1 expression in esophageal squamous cell carcinoma clinically. We enrolled patients with esophageal squamous cell carcinoma who provided pretreated tumor tissues. Tumor endothelin-converting enzyme-1 expression was evaluated by immunohistochemistry and was defined as either low or high expression. Then we evaluated whether tumor endothelin-converting enzyme-1 expression had any association with clinicopathological findings or predicted survival of patients with esophageal squamous cell carcinoma. Overall, 54 of 99 patients with esophageal squamous cell carcinoma had high tumor endothelin-converting enzyme-1 expression, which was significantly associated with lymph node metastasis ( p = 0.04). In addition, tumor endothelin-converting enzyme-1 expression independently predicted survival of patients with esophageal squamous cell carcinoma, and the 5-year survival was poorer in patients with high tumor endothelin-converting enzyme-1 expression ( p = 0.016). Among patients with locally advanced and potentially resectable esophageal squamous cell carcinoma (stage II and III), 5-year survival was poorer with high tumor endothelin-converting enzyme-1 expression ( p = 0.003). High tumor endothelin-converting enzyme-1 expression also significantly predicted poorer survival of patients in this population. In patients with esophageal squamous cell carcinoma, high tumor endothelin-converting enzyme-1 expression might indicate high tumor invasive property. Therefore, tumor endothelin-converting enzyme-1 expression could be a good biomarker to identify patients with worse survival and higher risks of recurrence, who might benefit from the treatment by endothelin-converting enzyme-1 inhibitor.
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Affiliation(s)
- Ching-Fang Wu
- Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
| | - Ching-Tai Lee
- Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
| | - Yao-Hung Kuo
- Department of Radiation Oncology, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
| | - Tzu-Haw Chen
- Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
| | - Chi-Yang Chang
- Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
| | - I-Wei Chang
- Department of Pathology, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
| | - Wen-Lun Wang
- Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung City, Taiwan
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Ram RN, Gupta DK. Direct and Stereoselective Synthesis of Diversely Substituted 2,4-trans-(NH)-Pyrrolidines by Copper(I)-Catalyzed Radical Cyclization at Low Temperature. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600844] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ram N. Ram
- Department of Chemistry; Indian Institute of Technology Delhi, Hauz Khas; New Delhi - 110016 India
| | - Dharmendra Kumar Gupta
- Department of Chemistry; Indian Institute of Technology Delhi, Hauz Khas; New Delhi - 110016 India
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Aubert JD, Juillerat-Jeanneret L. Endothelin-Receptor Antagonists beyond Pulmonary Arterial Hypertension: Cancer and Fibrosis. J Med Chem 2016; 59:8168-88. [PMID: 27266371 DOI: 10.1021/acs.jmedchem.5b01781] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The endothelin axis and in particular the two endothelin receptors, ETA and ETB, are targets for therapeutic intervention in human diseases. Endothelin-receptor antagonists are in clinical use to treat pulmonary arterial hypertension and have been under clinical investigation for the treatment of several other diseases, such as systemic hypertension, cancer, vasospasm, and fibrogenic diseases. In this Perspective, we review the molecules that have been evaluated in human clinical trials for the treatment of pulmonary arterial hypertension, as well as other cardiovascular diseases, cancer, and fibrosis. We will also discuss the therapeutic consequences of receptor selectivity with regard to ETA-selective, ETB-selective, or dual ETA/ETB antagonists. We will also consider which chemical characteristics are relevant to clinical use and the properties of molecules necessary for efficacy in treating diseases against which known molecules displayed suboptimal efficacy.
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Affiliation(s)
- John-David Aubert
- Pneumology Division and Transplantation Center, Centre Hospitalier Universitaire Vaudois (CHUV) , CH1011 Lausanne, Switzerland
| | - Lucienne Juillerat-Jeanneret
- University Institute of Pathology and Transplantation Center, Centre Hospitalier Universitaire Vaudois (CHUV), and University of Lausanne (UNIL), CH1011 Lausanne, Switzerland
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Wang X, Xiang Y, Ren Z, Zhang Y, Qiao Y. Rational questing for inhibitors of endothelin converting enzyme-1 from Salvia miltiorrhiza by combining ligand- and structure-based virtual screening. CAN J CHEM 2013. [DOI: 10.1139/cjc-2012-0523] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
In this study, a virtual screening approach based on pharmacophore and molecular docking was proposed to identify endothelin converting enzyme-1 (ECE-1) (EC 3.4.24.71) inhibitors from Salvia miltiorrhiza. First, the pharmacophore models were generated to recognize the common features of the ECE-1 inhibitors. The models were validated by a test database composed by a set of compounds known as ECE-1 inhibitors and nonactive compounds and proven to be successful in discriminating active and inactive inhibitors. Then, the best pharmacophore model was used to screen the compounds from S. miltiorrhiza. Furthermore, the Surflex-Dock procedure was used for molecular docking. All compounds from S. miltiorrhiza were docked into the active site of the target protein. An empirical scoring function was used to evaluate the affinity of the compounds and the target protein. Comparing the virtual screening results based on pharmacophore and molecular docking, respectively, 11 communal compounds with higher QFIT and docking score were hit, and the activity of some compounds was validated in the literature. The binding modes between these compounds and the ECE-1 binding site were predicted and used to identify the key interactions that contribute to the inhibitory activity of ECE-1 activity. The results show that the two methods have good consistency and can be validated and supplemented with each other.
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Affiliation(s)
- Xing Wang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Yuhong Xiang
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Zhenzhen Ren
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Yanling Zhang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Yanjiang Qiao
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
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13
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Endothelin Converting Enzyme-1 phosphorylation and trafficking. FEBS Lett 2012; 586:2212-7. [DOI: 10.1016/j.febslet.2012.06.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 06/05/2012] [Accepted: 06/08/2012] [Indexed: 11/23/2022]
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Staedler D, Chapuis-Bernasconi C, Dehmlow H, Fischer H, Juillerat-Jeanneret L, Aebi JD. Cytotoxic Effects of Combination of Oxidosqualene Cyclase Inhibitors with Atorvastatin in Human Cancer Cells. J Med Chem 2012; 55:4990-5002. [DOI: 10.1021/jm300256z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Davide Staedler
- Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne (UNIL), CH-1011 Lausanne, Switzerland
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
| | - Catherine Chapuis-Bernasconi
- Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne (UNIL), CH-1011 Lausanne, Switzerland
| | - Henrietta Dehmlow
- F. Hoffmann-La Roche Ltd., Pharmaceutical Division, CH-4070 Basel, Switzerland
| | - Holger Fischer
- F. Hoffmann-La Roche Ltd., Pharmaceutical Division, CH-4070 Basel, Switzerland
| | - Lucienne Juillerat-Jeanneret
- Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne (UNIL), CH-1011 Lausanne, Switzerland
| | - Johannes D. Aebi
- F. Hoffmann-La Roche Ltd., Pharmaceutical Division, CH-4070 Basel, Switzerland
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Kast RE. Glioblastoma: synergy of growth promotion between CCL5 and NK-1R can be thwarted by blocking CCL5 with miraviroc, an FDA approved anti-HIV drug and blocking NK-1R with aprepitant, an FDA approved anti-nausea drug. J Clin Pharm Ther 2011; 35:657-63. [PMID: 21054456 DOI: 10.1111/j.1365-2710.2009.01148.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
WHAT IS KNOWN AND BACKGROUND Two receptor signaling pathways that are commonly active in facilitating glioblastoma growth and invasion- that of CCR5 and neurokinin (NK)-1R- have small molecule inhibitors that are FDA approved and marketed to treat other conditions. The anti-HIV drug, maraviroc, inhibits human CCR5's ligand from binding, and hence blocks CCR5 stimulation. The anti-nausea drug aprepitant blocks substance P signaling at NK-1R. AIMS AND OBJECTIVE We propose on the basis of molecular insights that a combination of the two drugs is likely to be useful in the treatment of glioblastoma. COMMENT After stimulation by their respective ligands both CCR5 and NK-1R, through intermediaries, phosphorylate and thereby activate ERK1/2, triggering in turn migratory and mitotic events. Neurokinin-1R second messenger signaling also happens to serine phosphorylate CCR5. Phosphorylated CCR5 exhibits amplified activity after agonist ligation. Therefore, aprepitant and maraviroc combined treatment is expected to exert synergestic inhibition of growth enhancing signaling in glioblastoma. Inhibiting an amplifier is equivalent to amplifying an inhibitor. Since the two suggested drugs are non-cytotoxic they are envisioned as adjunctive treatments to current standard temozolomide, radiation, and bevacizumab, all to be used after debulking primary resection. WHAT IS NEW AND CONCLUSION Our analysis makes the case for a well-designed trial of the proposed combination in the treatment of glioblastoma.
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Affiliation(s)
- R E Kast
- Department of Psychiatry, University of Vermont, Burlington, VT 05401, USA.
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Whyteside AR, Hinsley EE, Lambert LA, McDermott PJ, Turner AJ. ECE-1 influences prostate cancer cell invasion via ET-1-mediated FAK phosphorylation and ET-1-independent mechanisms. Can J Physiol Pharmacol 2011; 88:850-4. [PMID: 20725143 DOI: 10.1139/y10-054] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Plasma concentrations of the mitogenic peptide endothelin-1 (ET-1) are significantly elevated in men with metastatic prostate cancer (PC). ET-1 also contributes to the transition of hormonally regulated androgen-dependent PC to androgen-independent disease. ET-1 is generated from big-ET-1 by endothelin-converting enzyme (ECE-1). ECE-1 is present in PC cell lines and primary tissue and is elevated in primary malignant stromal cells compared with benign. siRNA or shRNA-mediated knockdown of endogenous ECE-1 in either the epithelial or stromal compartment significantly reduced PC cell (PC-3) invasion and migration. The re-addition of ET-1 only partially recovered the effect, suggesting ET-1-dependent and -independent functions for ECE-1 in pPC. The ET-1-independent effect of ECE-1 on PC invasion may be due to modulation of downstream signalling events. Addition of an ECE-1 specific inhibitor to PC-3 cells reduced phosphorylation of focal adhesion kinase (FAK), a signalling molecule known to play a role in PC. siRNA-mediated knockdown of ECE-1 resulted in a significant reduction in FAK phosphorylation. Accordingly, transient ECE-1 overexpression in PNT1-a cells increased FAK phosphorylation. In conclusion, ECE-1 influences PC cell invasion via both ET-1-mediated FAK phosphorylation and ET-1 independent mechanisms.
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Affiliation(s)
- A R Whyteside
- Institute of Molecular and Cellular Biology, University of Leeds, Faculty of Biological Sciences, Leeds LS2 9JT, UK.
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Hong Y, Macnab S, Lambert LA, Turner AJ, Whitehouse A, Usmani BA. Herpesvirus saimiri-based endothelin-converting enzyme-1 shRNA expression decreases prostate cancer cell invasion and migration. Int J Cancer 2010; 129:586-98. [DOI: 10.1002/ijc.25719] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Accepted: 09/09/2010] [Indexed: 11/05/2022]
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Aubert JD, Juillerat-Jeanneret L. Therapeutic potential of endothelin receptor modulators: lessons from human clinical trials. Expert Opin Ther Targets 2009; 13:1069-84. [PMID: 19659448 DOI: 10.1517/14728220903074570] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The endothelin system, and in particular endothelin receptors, are targets for therapeutic intervention in human diseases. Endothelin receptor antagonists have reached clinical use for treating pulmonary arterial hypertension, and are under clinical investigation for several other diseases, such as cancer, vasospasm or fibrogenic diseases. We review the molecules that have been evaluated in the main clinical trials, from the point of view of receptor selectivity and of their chemical characteristics which were important for efficacy in pulmonary hypertension. We will also discuss future use of antagonists to endothelin receptor(s) in several human diseases and what should be the necessary properties of the future molecules for efficacy in diseases where the presently tested molecules displayed suboptimal efficacy.
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Affiliation(s)
- John-David Aubert
- University Institute of Pathology, University of Lausanne (UNIL), Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
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19
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Modulating collagen triple-helix stability with 4-chloro, 4-fluoro, and 4-methylprolines. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2009; 611:251-2. [PMID: 19400182 DOI: 10.1007/978-0-387-73657-0_115] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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20
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Smollich M, Wülfing P. Targeting the endothelin system: novel therapeutic options in gynecological, urological and breast cancers. Expert Rev Anticancer Ther 2008; 8:1481-93. [PMID: 18759699 DOI: 10.1586/14737140.8.9.1481] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The endothelin system comprises the three peptide hormones endothelin (ET)-1, -2, -3, their G protein-coupled receptors, endothelin-A-receptor (ET(A)R) and endothelin-B-receptor (ET(B)R), and the enzymes of endothelin biosynthesis and degradation. In the past two decades, an impressive amount of data has been accumulated investigating the role of the endothelin system in a variety of malignancies. In many cancers, ET-1/ET(A)R interaction induces proliferation, angiogenesis, antiapoptosis and resistance to chemotherapy. Data indicate a pivotal role of the endothelin system in tumorigenesis, local progression and metastasis. Subsequently, novel drugs have been designed inhibiting ET-1 biosynthesis or ET(A)R interaction. A wide range of preclinical data is available on the role of ET(A)R antagonists in gynecological, urological and breast cancers providing evidence for their antiangiogenic, proapoptotic and growth inhibitory effects. Of particular interest is the anti-invasive and antimetastatic efficacy of ET(A)R antagonists and synergism when co-administered with established cancer therapies. Data indicate a future role of ET(A)R antagonists in oncologic therapies.
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Affiliation(s)
- Martin Smollich
- University of Münster, Department of Obstetrics & Gynecology, Albert-Schweitzer-Str. 33, 48129, Münster, Germany.
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21
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Montgomery JP, Patterson PH. Endothelin receptor B antagonists decrease glioma cell viability independently of their cognate receptor. BMC Cancer 2008; 8:354. [PMID: 19040731 PMCID: PMC2613414 DOI: 10.1186/1471-2407-8-354] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2007] [Accepted: 11/28/2008] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Endothelin receptor antagonists inhibit the progression of many cancers, but research into their influence on glioma has been limited. METHODS We treated glioma cell lines, LN-229 and SW1088, and melanoma cell lines, A375 and WM35, with two endothelin receptor type B (ETRB)-specific antagonists, A-192621 and BQ788, and quantified viable cells by the capacity of their intracellular esterases to convert non-fluorescent calcein AM into green-fluorescent calcein. We assessed cell proliferation by labeling cells with carboxyfluorescein diacetate succinimidyl ester and quantifying the fluorescence by FACS analysis. We also examined the cell cycle status using BrdU/propidium iodide double staining and FACS analysis. We evaluated changes in gene expression by microarray analysis following treatment with A-192621 in glioma cells. We examined the role of ETRB by reducing its expression level using small interfering RNA (siRNA). RESULTS We report that two ETRB-specific antagonists, A-192621 and BQ788, reduce the number of viable cells in two glioma cell lines in a dose- and time-dependent manner. We describe similar results for two melanoma cell lines. The more potent of the two antagonists, A-192621, decreases the mean number of cell divisions at least in part by inducing a G2/M arrest and apoptosis. Microarray analysis of the effects of A-192621 treatment reveals up-regulation of several DNA damage-inducible genes. These results were confirmed by real-time RT-PCR. Importantly, reducing expression of ETRB with siRNAs does not abrogate the effects of either A-192621 or BQ788 in glioma or melanoma cells. Furthermore, BQ123, an endothelin receptor type A (ETRA)-specific antagonist, has no effect on cell viability in any of these cell lines, indicating that the ETRB-independent effects on cell viability exhibited by A-192621 and BQ788 are not a result of ETRA inhibition. CONCLUSION While ETRB antagonists reduce the viability of glioma cells in vitro, it appears unlikely that this effect is mediated by ETRB inhibition or cross-reaction with ETRA. Instead, we present evidence that A-192621 affects glioma and melanoma viability by activating stress/DNA damage response pathways, which leads to cell cycle arrest and apoptosis. This is the first evidence linking ETRB antagonist treatment to enhanced expression of DNA damage-inducible genes.
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Affiliation(s)
- Jennifer P Montgomery
- California Institute of Technology, 1200 E, California Blvd, MC 216-76, Pasadena, CA 91125, USA.
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22
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Isoforms of endothelin-converting enzyme-1 (ECE-1) have opposing effects on prostate cancer cell invasion. Br J Cancer 2008; 99:1114-20. [PMID: 18781169 PMCID: PMC2567069 DOI: 10.1038/sj.bjc.6604631] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Cross-talk between tumour and stromal cells can profoundly influence cancer cell invasion by increasing the availability of mitogenic peptides such as endothelin-1 (ET-1). Endothelin-1 is elevated in men with metastatic prostate cancer (PC), and can exert both an autocrine (epithelial) and a paracrine (stromal) influence on growth. Endothelin-1 is generated from its inactive precursor big-ET-1 by endothelin-converting enzyme 1 (ECE-1). We and others have demonstrated that ECE-1 expression is significantly elevated in tumours and surrounding stromal tissue. Our current data show siRNA-mediated knockdown of stromal ECE-1 reduces epithelial (PC-3) cell invasion in coculture. Interestingly, readdition of ET-1 only partially recovers this effect suggesting a novel role for ECE-1 independent of ET-1 activation. Parallel knockdown of ECE-1 in both stromal and epithelial compartments results in an additive decrease in cell invasion. We extrapolated this observation to the four recognised isoforms ECE-1a, ECE-1b, ECE-1c and ECE-1d. Only ECE-1a and ECE-1c were significant but with reciprocal effects on cell invasion. Transient ECE-1c overexpression increased PC-3 invasiveness through matrigel, whereas transient ECE-1a expression suppressed invasion. Furthermore, transient ECE-1a expression in stromal cells strongly counteracts the effect of transient ECE-1c expression in PC-3 cells. The ECE-1 isoforms may, therefore, be relevant targets for antiinvasive therapy in prostate and other cancers.
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Shoulders MD, Guzei IA, Raines RT. 4-chloroprolines: synthesis, conformational analysis, and effect on the collagen triple helix. Biopolymers 2008; 89:443-54. [PMID: 17937398 PMCID: PMC2802577 DOI: 10.1002/bip.20864] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Collagen is an abundant, triple-helical protein comprising three strands of the repeating sequence: Xaa-Yaa-Gly. (2S)-Proline and (2S,4R)-4-hydroxyproline (Hyp) are common in the primary structure of collagen. Here, we use nonnatural proline derivatives to reveal determinants of collagen stability. Specifically, we report high-yielding syntheses of (2S,4S)-4-chloroproline (clp) and (2S,4R)-4-chloroproline (Clp). We find that the molecular structure of Ac-Clp-OMe in the solid state is virtually identical to that of Ac-Hyp-OMe. In contrast, the conformational properties of Ac-clp-OMe are similar to those of Ac-Pro-OMe. Ac-Clp-OMe has a stronger preference for a trans amide bond than does Ac-Pro-OMe, whereas Ac-clp-OMe has a weaker preference. (Pro-Clp-Gly)(10) forms triple helices that are significantly more stable than those of (Pro-Pro-Gly)(10). Triple helices of (clp-Pro-Gly)(10) have stability similar to those of (Pro-Pro-Gly)(10). Unlike (Pro-Clp-Gly)(10) and (clp-Pro-Gly)(10), (clp-Clp-Gly)(10) does not form a stable triple helix, presumably due to a deleterious steric interaction between proximal chlorines on different strands. These data, which are consistent with previous work on 4-fluoroprolines and 4-methylprolines, support the importance of stereoelectronic and steric effects in the stability of the collagen triple helix and provide another means to modulate that stability. (
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Affiliation(s)
- Matthew D. Shoulders
- Department of Chemistry, University of Wisconsin Madison, 1101 University Avenue, Madison, WI 53706-1322
| | - Ilia A. Guzei
- Department of Chemistry, University of Wisconsin Madison, 1101 University Avenue, Madison, WI 53706-1322
| | - Ronald T. Raines
- Department of Chemistry, University of Wisconsin Madison, 1101 University Avenue, Madison, WI 53706-1322
- Department of Biochemistry, University of Wisconsin Madison, 433 Babcock Drive, Madison, WI 53706-1544
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Smollich M, Götte M, Yip GW, Yong ES, Kersting C, Fischgräbe J, Radke I, Kiesel L, Wülfing P. On the role of endothelin-converting enzyme-1 (ECE-1) and neprilysin in human breast cancer. Breast Cancer Res Treat 2007; 106:361-9. [PMID: 17295044 DOI: 10.1007/s10549-007-9516-9] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2007] [Accepted: 01/06/2007] [Indexed: 10/23/2022]
Abstract
Endothelin-1 (ET-1) and its receptors, ET(A)R and ET(B)R, are overexpressed in breast carcinomas. However, little is known about the relevance of endothelin-converting enzyme-1 (ECE-1) and ET-1 degrading neprilysin (NEP). In this study, expression of ECE-1 and NEP was determined in 600 breast cancer tissue samples by immunohistochemistry; staining results were correlated with clinicopathological parameters. For ECE-1 expression, we found a significant correlation with VEGF (P < 0.001) and ET(A)R expression (P = 0.048). While patients with ECE-1 overexpressing tumours had more frequent disease recurrence (P = 0.03), NEP overexpression correlated with improved disease-free survival (DFS) (P = 0.023) and less frequent metastasis (P = 0.046). Also, a decrease of NEP expression with malignant progression (G1-G3) was found. ECE-1 inhibition using the selective ECE-1 inhibitor RO 67-7447 in MCF-7 breast cancer cells led to a significantly decreased ET-1 expression and reduced cell invasiveness (54.3% of controls, P = 0.014). Our results indicate that overexpression of ECE-1 is associated with unfavourable outcome, whereas NEP positively influences survival. Thus, expression of ECE-1 and NEP may have prognostic relevance. Due to the anti-invasive effect of the selective ECE-1 inhibitor, targeting ECE-1 may represent an innovative option in future breast cancer therapy.
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Affiliation(s)
- Martin Smollich
- Department of Obstetrics and Gynecology, University Hospital of Münster, Albert-Schweitzer-Str. 33, 48149, Münster, Germany
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Awano S, Dawson LA, Hunter AR, Turner AJ, Usmani BA. Endothelin system in oral squamous carcinoma cells: Specific siRNA targeting of ECE-1 blocks cell proliferation. Int J Cancer 2006; 118:1645-52. [PMID: 16217751 DOI: 10.1002/ijc.21525] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The present study focused on the endothelin axis in human oral squamous cell carcinoma (SCC) cells. We investigated the expression and distribution of endothelin-1 (ET-1), its receptors (endothelin-A receptor (ET(A)R) and endothelin-B receptor (ET(B)R)) and isoforms of its specific converting enzyme (ECE-1a, 1b, 1c) and the report on their relative influences on cell proliferation. We also investigated the effect of an ECE-specific inhibitor (ECE-i) and siRNA targeting of the ECE-1 gene on SCC cell proliferation. We observed the expression of ET-1, ET(A)R, ET(B)R and all endothelin-converting enzyme-1 (ECE-1) isoforms in oral SCC cells, but only the expression of ET-1, ET(B)R and ECE-1 was increased when compared to normal human epidermal keratinocytes. ET-1 alone stimulated proliferation of oral SCC cells. Antagonists of either ET(A)R or ET(B)R inhibited ET-1-mediated proliferation. Decreased ECE-1 expression after ECE siRNA treatment reduced SCC cell proliferation. Antiproliferative effects were also observed by inhibiting ECE activity with ECE-i. In conclusion, the present study demonstrates that modulation of the endothelin system in oral SCC cells might provide a novel therapeutic protocol for oral cancer.
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Affiliation(s)
- Shuji Awano
- Proteolysis Research Group, School of Biochemistry and Microbiology, University of Leeds, Leeds, United Kingdom.
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Re RN, Cook JL. The intracrine hypothesis: an update. ACTA ACUST UNITED AC 2005; 133:1-9. [PMID: 16226324 DOI: 10.1016/j.regpep.2005.09.012] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2005] [Accepted: 09/08/2005] [Indexed: 01/17/2023]
Abstract
The intracellular actions of peptide hormones, growth factors, as well as of extracellular-signaling enzymes and DNA-binding proteins, either within target cells or within their cells of synthesis has been called intracrine action. Although these intracrine moieties are structurally diverse, they share certain characteristics of synthesis and function. This has given rise to the development of a theory of intracrine action which permits testable predictions to be made regarding the functioning of these peptides/proteins. Here the intracrine hypothesis is briefly described and then recent experimental findings which bear on predictions made earlier on the basis of the theory are discussed. These findings provide new support for the intracrine hypothesis.
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Affiliation(s)
- Richard N Re
- Research Division, Ochsner Clinic Foundation, 1516 Jefferson Highway, New Orleans, LA 70121, USA.
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