1
|
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] [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.
Collapse
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.
| |
Collapse
|
2
|
Veit M, Koyro KI, Ahrens B, Bleibaum F, Munz M, Rövekamp H, Andrä J, Schreiber R, Kunzelmann K, Sommer A, Bhakdi S, Reiss K. Anoctamin-6 regulates ADAM sheddase function. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2018; 1865:1598-1610. [PMID: 30327201 DOI: 10.1016/j.bbamcr.2018.08.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 08/17/2018] [Accepted: 08/20/2018] [Indexed: 02/07/2023]
Abstract
ADAM17, a prominent member of the "Disintegrin and Metalloproteinase" (ADAM) family, controls vital cellular functions through cleavage of transmembrane substrates including TGF-alpha, Amphiregulin (AREG) and TNF-Receptor 1 (TNFR1). We recently presented evidence that surface exposure of phosphatidylserine (PS) is pivotal for ADAM17 to exert sheddase activity. Anoctamin-6 (ANO6) has Ca2+-dependent phospholipid scramblase activity and it followed that the functions of ANO6 and ADAM17 might be linked. We report that overexpression of ANO6 in HEK293T cells led to increased Ca2+-mediated PS-exposure that was indeed accompanied by enhanced release of AREG and TGF-alpha. The effect was not observed when cells were treated with the PKC-dependent ADAM17 activator PMA. Transformation of cells with a constitutively active ANO6 mutant led to spontaneous PS-exposure and to the release of ADAM17-substrates in the absence of any stimuli. Inhibitor experiments indicated that ANO6-mediated enhancement of substrate cleavage simultaneously broadened the spectrum of participating metalloproteinases. In complementary experiments, siRNA-mediated downregulation of ANO6 was shown to decrease ionophore-mediated release of TNFR1 in human umbilical vein endothelial cells (HUVECs). We conclude that ANO6, by virtue of its scramblase activity, may play a role as an important regulator of the ADAM-network in the plasma membrane.
Collapse
Affiliation(s)
- Martin Veit
- Dept. of Dermatology, University of Kiel, 24105 Kiel, Germany
| | | | - Björn Ahrens
- Dept. of Dermatology, University of Kiel, 24105 Kiel, Germany
| | | | - Martin Munz
- Dept. of Dermatology, University of Kiel, 24105 Kiel, Germany
| | - Hagen Rövekamp
- Dept. of Dermatology, University of Kiel, 24105 Kiel, Germany
| | - Jörg Andrä
- Hamburg University of Applied Science, Ulmenliet 20, 21033 Hamburg, Germany
| | - Rainer Schreiber
- Physiological Institute, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Karl Kunzelmann
- Physiological Institute, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Anselm Sommer
- Dept. of Dermatology, University of Kiel, 24105 Kiel, Germany
| | - Sucharit Bhakdi
- Dept. of Dermatology, University of Kiel, 24105 Kiel, Germany
| | - Karina Reiss
- Dept. of Dermatology, University of Kiel, 24105 Kiel, Germany.
| |
Collapse
|
3
|
Pickl M, Fuchs M, Glueck SM, Faber K. The substrate tolerance of alcohol oxidases. Appl Microbiol Biotechnol 2015; 99:6617-42. [PMID: 26153139 PMCID: PMC4513209 DOI: 10.1007/s00253-015-6699-6] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/10/2015] [Accepted: 05/15/2015] [Indexed: 11/29/2022]
Abstract
Alcohols are a rich source of compounds from renewable sources, but they have to be activated in order to allow the modification of their carbon backbone. The latter can be achieved via oxidation to the corresponding aldehydes or ketones. As an alternative to (thermodynamically disfavoured) nicotinamide-dependent alcohol dehydrogenases, alcohol oxidases make use of molecular oxygen but their application is under-represented in synthetic biotransformations. In this review, the mechanism of copper-containing and flavoprotein alcohol oxidases is discussed in view of their ability to accept electronically activated or non-activated alcohols and their propensity towards over-oxidation of aldehydes yielding carboxylic acids. In order to facilitate the selection of the optimal enzyme for a given biocatalytic application, the substrate tolerance of alcohol oxidases is compiled and discussed: Substrates are classified into groups (non-activated prim- and sec-alcohols; activated allylic, cinnamic and benzylic alcohols; hydroxy acids; sugar alcohols; nucleotide alcohols; sterols) together with suitable alcohol oxidases, their microbial source, relative activities and (stereo)selectivities.
Collapse
Affiliation(s)
- Mathias Pickl
- Department of Chemistry, Organic & Bioorganic Chemistry, University of Graz, Heinrichstrasse 28, A-8010, Graz, Austria
| | | | | | | |
Collapse
|
4
|
Wilken JA, Perez-Torres M, Nieves-Alicea R, Cora EM, Christensen TA, Baron AT, Maihle NJ. Shedding of Soluble Epidermal Growth Factor Receptor (sEGFR) Is Mediated by a Metalloprotease/Fibronectin/Integrin Axis and Inhibited by Cetuximab. Biochemistry 2013; 52:4531-40. [DOI: 10.1021/bi400437d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jason A. Wilken
- Department of Obstetrics, Gynecology,
and Reproductive Sciences, Yale School of Medicine, P.O. Box 208063, 310 Cedar Street, FMB 211, New Haven, Connecticut
06520-8063, United States
| | - Marianela Perez-Torres
- Department of Pharmaceutical
Sciences, University of Puerto Rico, School of Pharmacy, P.O. Box 365067, San Juan, Puerto Rico, 00936
| | - Rene Nieves-Alicea
- Department of Biochemistry, University of Puerto Rico, Medical Sciences Campus,
P.O. Box 365067, San Juan, Puerto Rico, 00936
| | - Elsa M. Cora
- Department of Biochemistry, University of Puerto Rico, Medical Sciences Campus,
P.O. Box 365067, San Juan, Puerto Rico, 00936
| | - Trace A. Christensen
- Department of Biochemistry and
Molecular Biology, Mayo Clinic Foundation, Room 1421 Guggenheim Building, 200 First Street SW, Rochester,
Minnesota 55905, United States
| | - Andre T. Baron
- Department of Epidemiology,
College of Public Health and the Department of Obstetrics and Gynecology,
Division of Gynecologic Oncology, University of Kentucky, 111 Washington Avenue, Lexington, Kentucky 40356, United States
| | - Nita J. Maihle
- Department of Obstetrics, Gynecology,
and Reproductive Sciences, Yale School of Medicine, P.O. Box 208063, 310 Cedar Street, FMB 211, New Haven, Connecticut
06520-8063, United States
- Departments of Pathology and Pharmacology, Yale School of Medicine, P.O. Box 208063, 310 Cedar
Street, FMB 210, New Haven, Connecticut 06520-8063, United States
| |
Collapse
|
5
|
An overview on alcohol oxidases and their potential applications. Appl Microbiol Biotechnol 2013; 97:4259-75. [DOI: 10.1007/s00253-013-4842-9] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 03/06/2013] [Accepted: 03/07/2013] [Indexed: 10/27/2022]
|
6
|
Increased activity of cell surface peptidases in HeLa cells undergoing UV-induced apoptosis is not mediated by caspase 3. Int J Mol Sci 2012; 13:2650-2675. [PMID: 22489116 PMCID: PMC3317679 DOI: 10.3390/ijms13032650] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 02/14/2012] [Accepted: 02/22/2012] [Indexed: 11/16/2022] Open
Abstract
We have previously shown that in HeLa cells treated with a variety of agents there is an increase in cell surface peptidase (CSP) activity in those cells undergoing apoptosis. The increase in CSP activity observed in UVB-irradiated cells undergoing apoptosis was unaffected when the cultures were treated with the aminopeptidase inhibitor bestatin, and matrix metalloprotease inhibitor BB3103, but greatly enhanced when treated with the caspase 3 inhibitor-DEVD, and reduced in the presence of the poly(ADP-ribose) polymerase (PARP) inhibitor-3-aminobenzamide (3AB). Neither 3AB nor DEVD had an effect on the gross morphology of the apoptotic cells observed under electron microscopy, nor did they have an effect on phosphatidylserine eversion on the cell membrane, or that of PARP cleavage. All the agents except for DEVD had no effect on the level of caspase 3 activity in the cells. The results suggest that other caspases may cleave PARP in these cells. Both 3AB and DEVD treatment reduced the level of actin cleavage seen in the apoptotic cells. The increase in CSP activity observed in cells undergoing UVB-induced apoptosis appears to involve PARP but not caspase 3.
Collapse
|
7
|
Kunert R, Steinfellner W, Altmann F, Wallner J, Katinger H, Vorauer-Uhl K. CHO-recombinant human growth hormone as a protease sensitive reporter protein. Appl Microbiol Biotechnol 2009; 84:693-9. [PMID: 19396439 DOI: 10.1007/s00253-009-1997-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2008] [Revised: 03/30/2009] [Accepted: 03/31/2009] [Indexed: 10/20/2022]
Abstract
Protein-free media are gaining more and more interest in mammalian cell culture technology. However, the range of commercially available protein-free media is wide, but lack of serum causes the lack of various substances (Keenan et al. in Cytotechnology, 50(1-3):49-56, 2006) which must be substituted case by case. Details on the composition of protein-free media are often unavailable or inaccessible in some cases, and as a consequence, there is an obvious need for testing procedures in order to evaluate the various commercialised products for their performance. Additionally, negative effects of tryptic meat digests on product quality have been reported in the literature (Gu et al. in Biotech Bioeng 56 (4):353-341, 1997). In the present studies of comparing various protein-free media for their suitability in propagation of recombinant CHO cells expressing human growth hormone (hGH), we have found somatotropin to be an excellent candidate for detection of protease activity. Somatotropin contains protease recognition sites for numerous proteases located around amino-acid residues 134-150. In this study, we demonstrate highly specific cleavage of recombinant hGH during batch cultivation. Analysis of the digested molecule was then performed by convergent methods like SDS-PAGE, HPLC and mass spectroscopy, and the results indicate hGH to be an ideal candidate for media and component screening in mammalian cell culture.
Collapse
Affiliation(s)
- Renate Kunert
- Department of Biotechnology, University of Natural Resources and Applied Life Sciences, Muthgasse 18, 1190, Vienna, Austria.
| | | | | | | | | | | |
Collapse
|
8
|
Munteanu FD, Ferreira P, Ruiz-Dueñas FJ, Martínez AT, Cavaco-Paulo A. Bioelectrochemical investigations of aryl-alcohol oxidase from Pleurotus eryngii. J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2008.02.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
9
|
Zucca P, Mocci G, Rescigno A, Sanjust E. 5,10,15,20-Tetrakis(4-sulfonato-phenyl)porphine-Mn(III) immobilized on imidazole-activated silica as a novel lignin-peroxidase-like biomimetic catalyst. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.molcata.2007.09.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
10
|
Doroquez DB, Rebay I. Signal integration during development: mechanisms of EGFR and Notch pathway function and cross-talk. Crit Rev Biochem Mol Biol 2007; 41:339-85. [PMID: 17092823 DOI: 10.1080/10409230600914344] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Metazoan development relies on a highly regulated network of interactions between conserved signal transduction pathways to coordinate all aspects of cell fate specification, differentiation, and growth. In this review, we discuss the intricate interplay between the epidermal growth factor receptor (EGFR; Drosophila EGFR/DER) and the Notch signaling pathways as a paradigm for signal integration during development. First, we describe the current state of understanding of the molecular architecture of the EGFR and Notch signaling pathways that has resulted from synergistic studies in vertebrate, invertebrate, and cultured cell model systems. Then, focusing specifically on the Drosophila eye, we discuss how cooperative, sequential, and antagonistic relationships between these pathways mediate the spatially and temporally regulated processes that generate this sensory organ. The common themes underlying the coordination of the EGFR and Notch pathways appear to be broadly conserved and should, therefore, be directly applicable to elucidating mechanisms of information integration and signaling specificity in vertebrate systems.
Collapse
Affiliation(s)
- David B Doroquez
- Department of Biology, Whitehead Institute for Biomedical Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | | |
Collapse
|
11
|
Montero JC, Rodríguez-Barrueco R, Yuste L, Juanes PP, Borges J, Esparís-Ogando A, Pandiella A. The extracellular linker of pro-neuregulin-alpha2c is required for efficient sorting and juxtacrine function. Mol Biol Cell 2006; 18:380-93. [PMID: 17108327 PMCID: PMC1783780 DOI: 10.1091/mbc.e06-06-0511] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The neuregulins (NRGs) play important roles in animal physiology, and their disregulation has been linked to diseases such as cancer or schizophrenia. The NRGs may be produced as transmembrane proteins (proNRGs), even though they lack an N-terminal signal sequence. This raises the question of how NRGs are sorted to the plasma membrane. It is also unclear whether in their transmembrane state, the NRGs are biologically active. During studies aimed at solving these questions, we found that deletion of the extracellular juxtamembrane region termed the linker, decreased cell surface exposure of the mutant proNRG(DeltaLinker), and caused its entrapment at the cis-Golgi. We also found that cell surface-exposed transmembrane NRG forms retain biological activity. Thus, a mutant whose cleavage is impaired but is correctly sorted to the plasma membrane activated ErbB receptors in trans and also stimulated proliferation. Because the linker is implicated in surface sorting and the regulation of the cleavage of transmembrane NRGs, our data indicate that this region exerts multiple important roles in the physiology of NRGs.
Collapse
Affiliation(s)
- Juan C. Montero
- Instituto de Biología Molecular y Celular del Cáncer, Centro de Investigación del Cáncer, Consejo Superior de Investigaciones Científicas-Universidad de Salamanca, 37007 Salamanca, Spain
| | - Ruth Rodríguez-Barrueco
- Instituto de Biología Molecular y Celular del Cáncer, Centro de Investigación del Cáncer, Consejo Superior de Investigaciones Científicas-Universidad de Salamanca, 37007 Salamanca, Spain
| | - Laura Yuste
- Instituto de Biología Molecular y Celular del Cáncer, Centro de Investigación del Cáncer, Consejo Superior de Investigaciones Científicas-Universidad de Salamanca, 37007 Salamanca, Spain
| | - Pedro P. Juanes
- Instituto de Biología Molecular y Celular del Cáncer, Centro de Investigación del Cáncer, Consejo Superior de Investigaciones Científicas-Universidad de Salamanca, 37007 Salamanca, Spain
| | - Joana Borges
- Instituto de Biología Molecular y Celular del Cáncer, Centro de Investigación del Cáncer, Consejo Superior de Investigaciones Científicas-Universidad de Salamanca, 37007 Salamanca, Spain
| | - Azucena Esparís-Ogando
- Instituto de Biología Molecular y Celular del Cáncer, Centro de Investigación del Cáncer, Consejo Superior de Investigaciones Científicas-Universidad de Salamanca, 37007 Salamanca, Spain
| | - Atanasio Pandiella
- Instituto de Biología Molecular y Celular del Cáncer, Centro de Investigación del Cáncer, Consejo Superior de Investigaciones Científicas-Universidad de Salamanca, 37007 Salamanca, Spain
| |
Collapse
|
12
|
Lomniczi A, Cornea A, Costa ME, Ojeda SR. Hypothalamic tumor necrosis factor-alpha converting enzyme mediates excitatory amino acid-dependent neuron-to-glia signaling in the neuroendocrine brain. J Neurosci 2006; 26:51-62. [PMID: 16399672 PMCID: PMC6674310 DOI: 10.1523/jneurosci.2939-05.2006] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Glial erbB1 receptors play a significant role in the hypothalamic control of female puberty. Activation of these receptors by transforming growth factor alpha (TGFalpha) results in production of prostaglandin E2, which then stimulates luteinizing hormone releasing hormone (LHRH) neurons to secrete LHRH, the neuropeptide controlling sexual development. Glutamatergic neurons set in motion this glia-to-neuron signaling pathway by transactivating erbB1 receptors via coactivation of AMPA receptors (AMPARs) and metabotropic glutamate receptors (mGluRs). Because the metalloproteinase tumor necrosis factor alpha converting enzyme (TACE) releases TGFalpha from its transmembrane precursor before TGFalpha can bind to erbB1 receptors, we sought to determine whether TACE is required for excitatory amino acids to activate the TGFalpha-erbB1 signaling module in hypothalamic astrocytes, and thus facilitate the advent of puberty. Coactivation of astrocytic AMPARs and mGluRs caused extracellular Ca2+ influx, a Ca2+/protein kinase C-dependent increase in TACE-like activity, and enhanced release of TGFalpha. Within the hypothalamus, TACE is most abundantly expressed in astrocytes of the median eminence (ME), and its enzymatic activity increases selectively in this region at the time of the first preovulatory surge of gonadotropins. ME explants respond to stimulation of AMPARs and mGluRs with LHRH release, and this response is prevented by blocking TACE activity. In vivo inhibition of TACE activity targeted to the ME delayed the age at first ovulation, indicating that ME-specific changes in TACE activity are required for the normal timing of puberty. These results suggest that TACE is a component of the neuron-to-glia signaling process used by glutamatergic neurons to control female sexual development.
Collapse
Affiliation(s)
- Alejandro Lomniczi
- Division of Neuroscience, Oregon National Primate Research Center/Oregon Health and Science University, Beaverton, Oregon 97006, USA.
| | | | | | | |
Collapse
|