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Di Bernardo M, León Guerrero VL, Sutoski JC, Hardy WR, MacNeil LT. SHC-3: a previously unidentified C. elegans Shc family member functions in the insulin-like signaling pathway to enhance survival during L1 arrest. Genetics 2024; 228:iyae093. [PMID: 38861412 DOI: 10.1093/genetics/iyae093] [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: 11/21/2023] [Revised: 11/21/2023] [Accepted: 05/21/2024] [Indexed: 06/13/2024] Open
Abstract
Shc (Src homologous and collagen) proteins function in many different signaling pathways where they mediate phosphorylation-dependent protein-protein interactions. These proteins are characterized by the presence of two phosphotyrosine-binding domains, an N-terminal PTB and a C-terminal SH2. We describe a previously unrecognized Caenorhabditis elegans Shc gene, shc-3 and characterize its role in stress response. Both shc-3 and shc-1 are required for long-term survival in L1 arrest and survival in heat stress, however, they do not act redundantly but rather play distinct roles in these processes. Loss of shc-3 did not further decrease survival of daf-16 mutants in L1 arrest, suggesting that like SHC-1, SHC-3 functions in the insulin-like signaling pathway. In the absence of SHC-3, DAF-16 nuclear entry and exit are slowed, suggesting that SHC-3 is required for rapid changes in DAF-16 signaling.
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Affiliation(s)
- Mercedes Di Bernardo
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4K1, Canada
| | - Victoria L León Guerrero
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4K1, Canada
| | - Jacob C Sutoski
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4K1, Canada
| | - William Rod Hardy
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4K1, Canada
| | - Lesley T MacNeil
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4K1, Canada
- Farncombe Family Digestive Health Research Institute, McMaster University, 1280 Main St W, Hamilton, ON L8S 4K1, Canada
- Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, 1280 Main St W, Hamilton, ON L8S 4K1, Canada
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Kumar J, Uppulapu SK, Kumari S, Sharma K, Paradee W, Yadav RP, Kumar V, Kumar S. P66Shc Mediates SUMO2-induced Endothelial Dysfunction. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.24.577109. [PMID: 38328241 PMCID: PMC10849724 DOI: 10.1101/2024.01.24.577109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Sumoylation is a post-translational modification that can regulate different physiological functions. Increased sumoylation, specifically conjugation of SUMO2/3 (small ubiquitin like modifier 2/3), is detrimental to vascular health. However, the molecular mechanism mediating this effect is poorly understood. Here, we demonstrate that SUMO2 modifies p66Shc, which impairs endothelial function. Using multiple approaches, we show that p66Shc is a direct target of SUMO2. Mass spectrometry identified that SUMO2 modified lysine-81 in the unique collagen homology-2 domain of p66Shc. SUMO2ylation of p66Shc increased phosphorylation at serine-36, causing it to translocate to the mitochondria. Notably, sumoylation-deficient p66Shc (p66ShcK81R) was resistant to SUMO2-induced p66ShcS36 phosphorylation and mitochondrial translocation. Ingenuity pathway analysis showed that majority of effects of p66Shc SUMO2ylation were mediated via p66ShcK81. Finally, p66ShcK81R knockin mice were resistant to SUMO2-induced endothelial dysfunction. Collectively, our work uncovers a posttranslational modification of redox protein p66Shc and identifies SUMO2-p66Shc signaling as a regulator of vascular endothelial function.
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Androutsopoulos G, Styliara I, Zarogianni E, Lazurko N, Valasoulis G, Michail G, Adonakis G. The ErbB Signaling Network and Its Potential Role in Endometrial Cancer. EPIGENOMES 2023; 7:24. [PMID: 37873809 PMCID: PMC10594534 DOI: 10.3390/epigenomes7040024] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/24/2023] [Accepted: 09/26/2023] [Indexed: 10/25/2023] Open
Abstract
Endometrial cancer (EC) is the second most common malignancy of the female reproductive system worldwide. The updated EC classification emphasizes the significant role of various signaling pathways such as PIK3CA-PIK3R1-PTEN and RTK/RAS/β-catenin in EC pathogenesis. Some of these pathways are part of the EGF system signaling network, which becomes hyperactivated by various mechanisms and participates in cancer pathogenesis. In EC, the expression of ErbB receptors is significantly different, compared with the premenopausal and postmenopausal endometrium, mainly because of the increased transcriptional activity of ErbB encoding genes in EC cells. Moreover, there are some differences in ErbB-2 receptor profile among EC subgroups that could be explained by the alterations in pathophysiology and clinical behavior of various EC histologic subtypes. The fact that ErbB-2 receptor expression is more common in aggressive EC histologic subtypes (papillary serous and clear cell) could indicate a future role of ErbB-targeted therapies in well-defined EC subgroups with overexpression of ErbB receptors.
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Affiliation(s)
- Georgios Androutsopoulos
- Gynaecological Oncology Unit, Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
| | - Ioanna Styliara
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
| | - Evgenia Zarogianni
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
| | - Nadia Lazurko
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
| | - George Valasoulis
- Department of Obstetrics and Gynaecology, Medical School, University of Thessaly, 41334 Larisa, Greece;
- Hellenic National Public Health Organization—ECDC, 15123 Athens, Greece
| | - Georgios Michail
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
| | - Georgios Adonakis
- Department of Obstetrics and Gynaecology, School of Medicine, University of Patras, 26504 Rion, Greece; (I.S.); (E.Z.); (N.L.); (G.M.); (G.A.)
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4
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Sandouk A, Xu Z, Baruah S, Tremblay M, Hopkins JB, Chakravarthy S, Gakhar L, Schnicker NJ, Houtman JCD. GRB2 dimerization mediated by SH2 domain-swapping is critical for T cell signaling and cytokine production. Sci Rep 2023; 13:3505. [PMID: 36864087 PMCID: PMC9981690 DOI: 10.1038/s41598-023-30562-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 02/25/2023] [Indexed: 03/04/2023] Open
Abstract
GRB2 is an adaptor protein required for facilitating cytoplasmic signaling complexes from a wide array of binding partners. GRB2 has been reported to exist in either a monomeric or dimeric state in crystal and solution. GRB2 dimers are formed by the exchange of protein segments between domains, otherwise known as "domain-swapping". Swapping has been described between SH2 and C-terminal SH3 domains in the full-length structure of GRB2 (SH2/C-SH3 domain-swapped dimer), as well as between α-helixes in isolated GRB2 SH2 domains (SH2/SH2 domain-swapped dimer). Interestingly, SH2/SH2 domain-swapping has not been observed within the full-length protein, nor have the functional influences of this novel oligomeric conformation been explored. We herein generated a model of full-length GRB2 dimer with an SH2/SH2 domain-swapped conformation supported by in-line SEC-MALS-SAXS analyses. This conformation is consistent with the previously reported truncated GRB2 SH2/SH2 domain-swapped dimer but different from the previously reported, full-length SH2/C-terminal SH3 (C-SH3) domain-swapped dimer. Our model is also validated by several novel full-length GRB2 mutants that favor either a monomeric or a dimeric state through mutations within the SH2 domain that abrogate or promote SH2/SH2 domain-swapping. GRB2 knockdown and re-expression of selected monomeric and dimeric mutants in a T cell lymphoma cell line led to notable defects in clustering of the adaptor protein LAT and IL-2 release in response to TCR stimulation. These results mirrored similarly-impaired IL-2 release in GRB2-deficient cells. These studies show that a novel dimeric GRB2 conformation with domain-swapping between SH2 domains and monomer/dimer transitions are critical for GRB2 to facilitate early signaling complexes in human T cells.
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Affiliation(s)
- Aline Sandouk
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, 52242, USA
| | - Zhen Xu
- Protein and Crystallography Facility, University of Iowa, Iowa City, IA, 52242, USA
| | - Sankar Baruah
- Protein and Crystallography Facility, University of Iowa, Iowa City, IA, 52242, USA
| | - Mikaela Tremblay
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, 52242, USA
| | - Jesse B Hopkins
- Biophysics Collaborative Access Team, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Srinivas Chakravarthy
- Biophysics Collaborative Access Team, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Lokesh Gakhar
- Protein and Crystallography Facility, University of Iowa, Iowa City, IA, 52242, USA
- Department of Biochemistry and Molecular Biology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Nicholas J Schnicker
- Protein and Crystallography Facility, University of Iowa, Iowa City, IA, 52242, USA
| | - Jon C D Houtman
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, 52242, USA.
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, 52242, USA.
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Abou-Jaoude A, Courtes M, Badique L, Elhaj Mahmoud D, Abboud C, Mlih M, Justiniano H, Milbach M, Lambert M, Lemle A, Awan S, Terrand J, Niemeier A, Barbero A, Houard X, Boucher P, Matz RL. ShcA promotes chondrocyte hypertrophic commitment and osteoarthritis in mice through RunX2 nuclear translocation and YAP1 inactivation. Osteoarthritis Cartilage 2022; 30:1365-1375. [PMID: 35840017 DOI: 10.1016/j.joca.2022.07.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 06/17/2022] [Accepted: 07/05/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Chondrocyte hypertrophic differentiation, a key process in endochondral ossification, is also a feature of osteoarthritis leading to cartilage destruction. Here we investigated the role of the adaptor protein Src homology and Collagen A (ShcA) in chondrocyte differentiation and osteoarthritis. METHODS Mice ablated for ShcA in osteochondroprogenitor cells were generated by crossing mice carrying the Twist2-Cre transgene with ShcAflox/flox mice. Their phenotype (n = 5 to 14 mice per group) was characterized using histology, immuno-histology and western-blot. To identify the signaling mechanisms involved, in vitro experiments were conducted on wild type and ShcA deficient chondrocytes (isolated from n = 4 to 7 littermates) and the chondroprogenitor cell line ATDC5 (n = 4 independent experiments) using western-blot, cell fractionation and confocal microscopy. RESULTS Deletion of ShcA decreases the hypertrophic zone of the growth plate (median between group difference -11.37% [95% confidence interval -17.34 to -8.654]), alters the endochondral ossification process, and leads to dwarfism (3 months old male mice nose-to-anus length -1.48 cm [-1.860 to -1.190]). ShcA promotes ERK1/2 activation, nuclear translocation of RunX2, the master transcription factor for chondrocyte hypertrophy, while maintaining the Runx2 inhibitor, YAP1, in its cytosolic inactive form. This leads to hypertrophic commitment and expression of markers of hypertrophy, such as Collagen X. In addition, loss of ShcA protects from age-related osteoarthritis development in mice (2 years old mice OARSI score -6.67 [-14.25 to -4.000]). CONCLUSION This study reveals ShcA as a new player in the control of chondrocyte hypertrophic differentiation and its deletion slows down osteoarthritis development.
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Affiliation(s)
- A Abou-Jaoude
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - M Courtes
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - L Badique
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - D Elhaj Mahmoud
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - C Abboud
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - M Mlih
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - H Justiniano
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - M Milbach
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - M Lambert
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - A Lemle
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - S Awan
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - J Terrand
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - A Niemeier
- Department of Biochemistry and Molecular Cell Biology and Department of Orthopaedics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - A Barbero
- Department of Biomedicine, University Hospital Basel and University of Basel, Basel, Switzerland.
| | - X Houard
- Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine (CRSA), F-75012 Paris, France.
| | - P Boucher
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
| | - R L Matz
- UMR INSERM S_1109 University of Strasbourg, 67000 Strasbourg, France.
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6
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Hepatocyte Growth Factor Enhances Antineoplastic Effect of 5-Fluorouracil by Increasing UPP1 Expression in HepG2 Cells. Int J Mol Sci 2022; 23:ijms23169108. [PMID: 36012373 PMCID: PMC9409026 DOI: 10.3390/ijms23169108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/16/2022] Open
Abstract
Aberrant activation of hepatocyte growth factor (HGF) and its receptor c-Met axis promotes tumor growth. Therefore, many clinical trials have been conducted. A phase 3 trial investigating a monoclonal antibody targeting HGF in combination with fluoropyrimidine-based chemotherapy had to be terminated prematurely; however, the reason behind the failure remains poorly defined. In this study, we investigated the influence of HGF on the antineoplastic effects of 5-fluorouracil (5-FU), a fluoropyrimidine, in HepG2 cells. HGF suppressed the proliferative activity of cells concomitantly treated with 5-FU more robustly as compared to that of cells treated with 5-FU alone, and markedly increased the expression of uridine phosphorylase 1 (UPP1). Intracellular concentration of 5-fluorouridine, an initial anabolite of 5-FU catalyzed by UPP1, was increased by HGF. Interestingly, erlotinib enhanced HGF-induced increase in UPP1 mRNA; in contrast, gefitinib suppressed it. Furthermore, erlotinib suppressed HGF-increased phosphorylation of the epidermal growth factor receptor at the Tyr1173 site involved in downregulation of extracellular signal-regulated kinase (Erk) activation, and enhanced the HGF-increased phosphorylation of Erk. Collectively, these findings suggest that inhibition of the HGF/c-Met axis diminishes the effects of fluoropyrimidine through downregulation of UPP1 expression. Therefore, extreme caution must be exercised in terms of patient safety while offering chemotherapy comprising fluoropyrimidine concomitantly with inhibitors of the HGF/c-Met axis.
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7
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Ochi S, Iiyama M, Oda M. Interdomain interactions in Grb2 revealed by the conformational stability and CD28 binding analysis. Biophys Chem 2022; 284:106792. [DOI: 10.1016/j.bpc.2022.106792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/27/2022] [Accepted: 03/01/2022] [Indexed: 11/02/2022]
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8
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Dent P. Cell Signaling and Translational Developmental Therapeutics. COMPREHENSIVE PHARMACOLOGY 2022. [PMCID: PMC7538147 DOI: 10.1016/b978-0-12-820472-6.00002-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
The relationships between drug pharmacodynamics and subsequent changes in cellular signaling processes are complex. Many in vitro cell signaling studies often use drug concentrations above physiologically safe drug levels achievable in a patient's plasma. Drug companies develop agents to inhibit or modify the activities of specific target enzymes, often without a full consideration that their compounds have additional unknown targets. These two negative sequelae, when published together, become impediments against successful developmental therapeutics and translation because this data distorts our understanding of signaling mechanisms and reduces the probability of successfully translating drug-based concepts from the bench to the bedside. This article will discuss cellular signaling in isolation and as it relates to extant single and combined therapeutic drug interventions. This will lead to a hypothetical series standardized sequential approaches describing a rigorous concept to drug development and clinical translation.
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9
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Kazemein Jasemi NS, Reza Ahmadian M. Allosteric regulation of GRB2 modulates RAS activation. Small GTPases 2022; 13:282-286. [PMID: 35703160 DOI: 10.1080/21541248.2022.2089001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
RAS activation is a multiple-step process in which linkage of the extracellular stimuli to the RAS activator SOS1 is the main step in RAS activation. GRB2 adaptor protein is the main modulator in SOS1 recruitment to the plasma membrane and its activation. This interaction is well studied but the exact mechanism of GRB2-SOS1 complex formation and SOS1 activation has yet remained obscure. Here, a new allosteric mechanism for the GRB2 regulation is described as a prerequisite for the modulation of SOS1 activation. This regulatory mechanism comprises a series of intramolecular interactions which are potentiated by GRB2 interaction with upstream ligands.Abbreviations: GRB2, growth factor receptor-bound protein 2; SOS1, son of sevenless 1; RAS, Rat Sarcoma; GEF, guanine nucleotide exchange factor; GAP, GTPase-activating protein; HER2, human epidermal growth factor receptor; SH3, SRC Homology 3; SH2, SRC Homology 2; PRD, proline-rich domain; PRM, proline-rich motif; PRP, proline-rich peptide; RTK, receptor tyrosine kinases.
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Affiliation(s)
- Neda S Kazemein Jasemi
- Institute of Biochemistry and Molecular Biology II, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, Universitaetsstrasse 1, Building 22.03, 40255 Düsseldorf, Germany
| | - Mohammad Reza Ahmadian
- Institute of Biochemistry and Molecular Biology II, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, Universitaetsstrasse 1, Building 22.03, 40255 Düsseldorf, Germany
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10
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Mushtaq U, Bashir M, Nabi S, Khanday FA. Epidermal growth factor receptor and integrins meet redox signaling through P66shc and Rac1. Cytokine 2021; 146:155625. [PMID: 34157521 DOI: 10.1016/j.cyto.2021.155625] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 05/23/2021] [Accepted: 06/08/2021] [Indexed: 12/24/2022]
Abstract
This review examines the concerted role of Epidermal Growth Factor Receptor (EGFR) and integrins in regulating Reactive oxygen species (ROS) production through different signaling pathways. ROS as such are not always deleterious to the cells but they also act as signaling molecules, that regulates numerous indespensible physiological fuctions of life. Many adaptor proteins, particularly Shc and Grb2, are involved in mediating the downstream signaling pathways stimulated by EGFR and integrins. Integrin-induced activation of EGFR and subsequent tyrosine phosphorylation of a class of acceptor sites on EGFR leads to alignment and tyrosine phosphorylation of Shc, PLCγ, the p85 subunit of PI-3 K, and Cbl, followed by activation of the downstream targets Erk and Akt/PKB. Functional interactions between these receptors result in the activation of Rac1 via these adaptor proteins, thereby leading to Reactive Oxygen Species. Both GF and integrin activation can produce oxidants independently, however synergistically there is increased ROS generation, suggesting a mutual cooperation between integrins and GFRs for redox signalling. The ROS produced further promotes feed-forward stimulation of redox signaling events such as MAPK activation and gene expression. This relationship has not been reviewed previously. The literature presented here can have multiple implications, ranging from looking at synergistic effects of integrin and EGFR mediated signaling mechanisms of different proteins to possible therapeutic interventions operated by these two receptors. Furthermore, such mutual redox regulation of crosstalk between EGFR and integrins not only add to the established models of pathological oxidative stress, but also can impart new avenues and opportunities for targeted antioxidant based therapeutics.
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Affiliation(s)
- Umar Mushtaq
- Department of Biotechnology, University of Kashmir, Srinagar, JK 190006, India; Department of Biotechnology, Central University of Kashmir, Ganderbal, JK 191201, India
| | - Muneesa Bashir
- Department of Biotechnology, University of Kashmir, Srinagar, JK 190006, India; Department of Higher Education, Government of Jammu & Kashmir, 190001, India
| | - Sumaiya Nabi
- Department of Biochemistry, University of Kashmir, Srinagar, JK 190006, India
| | - Firdous A Khanday
- Department of Biotechnology, University of Kashmir, Srinagar, JK 190006, India.
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11
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Yoshizawa R, Umeki N, Yamamoto A, Murata M, Sako Y. Biphasic spatiotemporal regulation of GRB2 dynamics by p52SHC for transient RAS activation. Biophys Physicobiol 2021; 18:1-12. [PMID: 33665062 PMCID: PMC7902154 DOI: 10.2142/biophysico.bppb-v18.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/05/2021] [Indexed: 12/14/2022] Open
Abstract
RTK-RAS-MAPK systems are major signaling pathways for cell fate decisions. Among the several RTK species, it is known that the transient activation of ERK (MAPK) stimulates cell proliferation, whereas its sustained activation induces cell differentiation. In both instances however, RAS activation is transient, suggesting that the strict temporal regulation of its activity is critical in normal cells. RAS on the cytoplasmic side of the plasma membrane is activated by SOS through the recruitment of GRB2/SOS complex to the RTKs that are phosphorylated after stimulation with growth factors. The adaptor protein GRB2 recognizes phospho-RTKs both directly and indirectly via another adaptor protein, SHC. We here studied the regulation of GRB2 recruitment under the SHC pathway using single-molecule imaging and fluorescence correlation spectroscopy in living cells. We stimulated MCF7 cells with a differentiation factor, heregulin, and observed the translocation, complex formation, and phosphorylation of cell signaling molecules including GRB2 and SHC. Our results suggest a biphasic regulation of the GRB2/SOS-RAS pathway by SHC: At the early stage (<10 min) of stimulation, SHC increased the amplitude of RAS activity by increasing the association sites for the GRB2/SOS complex on the plasma membrane. At the later stage however, SHC suppressed RAS activation and sequestered GRB2 molecules from the membrane through the complex formation in the cytoplasm. The latter mechanism functions additively to other mechanisms of negative feedback regulation of RAS from MEK and/or ERK to complete the transient activation dynamics of RAS.
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Affiliation(s)
- Ryo Yoshizawa
- Cellular Informatics Lab, RIKEN, Wako, Saitama 351-0198, Japan.,Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro-ku, Tokyo 153-8902, Japan
| | - Nobuhisa Umeki
- Cellular Informatics Lab, RIKEN, Wako, Saitama 351-0198, Japan
| | | | - Masayuki Murata
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro-ku, Tokyo 153-8902, Japan
| | - Yasushi Sako
- Cellular Informatics Lab, RIKEN, Wako, Saitama 351-0198, Japan
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12
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Nagano T, Iwasaki T, Onishi K, Awai Y, Terachi A, Kuwaba S, Asano S, Katasho R, Nagai K, Nakashima A, Kikkawa U, Kamada S. LY6D-induced macropinocytosis as a survival mechanism of senescent cells. J Biol Chem 2021; 296:100049. [PMID: 33168631 PMCID: PMC7948989 DOI: 10.1074/jbc.ra120.013500] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 10/23/2020] [Accepted: 11/09/2020] [Indexed: 01/16/2023] Open
Abstract
Although senescent cells display various morphological changes including vacuole formation, it is still unclear how these processes are regulated. We have recently identified the gene, lymphocyte antigen 6 complex, locus D (LY6D), to be upregulated specifically in senescent cells. LY6D is a glycosylphosphatidylinositol-anchored cell-surface protein whose function remains unknown. Here, we analyzed the functional relationship between LY6D and the senescence processes. We found that overexpression of LY6D induced vacuole formation and knockdown of LY6D suppressed the senescence-associated vacuole formation. The LY6D-induced vacuoles were derived from macropinocytosis, a distinct form of endocytosis. Furthermore, Src family kinases and Ras were found to be recruited to membrane lipid rafts in an LY6D-dependent manner, and inhibition of their activity impaired the LY6D-induced macropinocytosis. Finally, reduction of senescent-cell survival induced by glutamine deprivation was recovered by albumin supplementation to the culture media in an LY6D-dependent manner. Because macropinocytosis acts as an amino acid supply route, these results suggest that LY6D-mediated macropinocytosis contributes to senescent-cell survival through the incorporation of extracellular nutrients.
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Affiliation(s)
- Taiki Nagano
- Biosignal Research Center, Kobe University, Kobe, Japan
| | - Tetsushi Iwasaki
- Biosignal Research Center, Kobe University, Kobe, Japan; Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan; Department of Biology, Faculty of Science, Kobe University, Kobe, Japan
| | - Kengo Onishi
- Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan
| | - Yuto Awai
- Department of Biology, Faculty of Science, Kobe University, Kobe, Japan
| | - Anju Terachi
- Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan
| | - Shione Kuwaba
- Department of Biology, Faculty of Science, Kobe University, Kobe, Japan
| | - Shota Asano
- Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan
| | - Ryoko Katasho
- Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan
| | - Kiyoko Nagai
- Biosignal Research Center, Kobe University, Kobe, Japan
| | - Akio Nakashima
- Biosignal Research Center, Kobe University, Kobe, Japan; Department of Bioresource Science, Graduate School of Agricultural Science, Kobe University, Kobe, Japan
| | - Ushio Kikkawa
- Biosignal Research Center, Kobe University, Kobe, Japan; Department of Bioresource Science, Graduate School of Agricultural Science, Kobe University, Kobe, Japan
| | - Shinji Kamada
- Biosignal Research Center, Kobe University, Kobe, Japan; Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan; Department of Biology, Faculty of Science, Kobe University, Kobe, Japan.
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13
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Loureiro CA, Pinto FR, Barros P, Matos P, Jordan P. A SYK/SHC1 pathway regulates the amount of CFTR in the plasma membrane. Cell Mol Life Sci 2020; 77:4997-5015. [PMID: 31974654 PMCID: PMC11105000 DOI: 10.1007/s00018-020-03448-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 12/06/2019] [Accepted: 01/02/2020] [Indexed: 11/24/2022]
Abstract
Mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene cause the recessive genetic disease cystic fibrosis, where the chloride transport across the apical membrane of epithelial cells mediated by the CFTR protein is impaired. CFTR protein trafficking to the plasma membrane (PM) is the result of a complex interplay between the secretory and membrane recycling pathways that control the number of channels present at the membrane. In addition, the ion transport activity of CFTR at the PM is modulated through post-translational protein modifications. Previously we described that spleen tyrosine kinase (SYK) phosphorylates a specific tyrosine residue in the nucleotide-binding domain 1 domain and this modification can regulate the PM abundance of CFTR. Here we identified the underlying biochemical mechanism using peptide pull-down assays followed by mass spectrometry. We identified in bronchial epithelial cells that the adaptor protein SHC1 recognizes tyrosine-phosphorylated CFTR through its phosphotyrosine-binding domain and that the formation of a complex between SHC1 and CFTR is induced at the PM in the presence of activated SYK. The depletion of endogenous SHC1 expression was sufficient to promote an increase in CFTR at the PM of these cells. The results identify a SYK/SHC1 pathway that regulates the PM levels of CFTR channels, contributing to a better understanding of how CFTR-mediated chloride secretion is regulated.
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Affiliation(s)
- Cláudia Almeida Loureiro
- Department of Human Genetics, National Health Institute 'Dr. Ricardo Jorge', Avenida Padre Cruz, 1649-016, Lisbon, Portugal
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Francisco R Pinto
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
- Department of Chemistry and Biochemistry, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Patrícia Barros
- Department of Human Genetics, National Health Institute 'Dr. Ricardo Jorge', Avenida Padre Cruz, 1649-016, Lisbon, Portugal
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Paulo Matos
- Department of Human Genetics, National Health Institute 'Dr. Ricardo Jorge', Avenida Padre Cruz, 1649-016, Lisbon, Portugal
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
- Department of Chemistry and Biochemistry, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Peter Jordan
- Department of Human Genetics, National Health Institute 'Dr. Ricardo Jorge', Avenida Padre Cruz, 1649-016, Lisbon, Portugal.
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal.
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14
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The AKT-independent MET-V-ATPase-MTOR axis suppresses liver cancer vaccination. Signal Transduct Target Ther 2020; 5:122. [PMID: 32764535 PMCID: PMC7414041 DOI: 10.1038/s41392-020-0179-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/10/2020] [Accepted: 04/15/2020] [Indexed: 12/30/2022] Open
Abstract
Despite recent progress in hepatitis treatment, there have been no significant advances in the development of liver cancer vaccines in recent years. In this study, we investigated the regulatory effect and potential mechanism of hepatocyte growth factor receptor (MET, also known as HGFR) on tumor vaccinations for liver cancer in mice. Herein, we demonstrate that MET expression is significantly associated with the immunogenicity of liver cancer in mice and humans, and that MET depletion dramatically enhances the protective efficacy of chemotherapy-based anti-liver cancer vaccination. Mechanistically, MET repressed liver cancer immunogenicity independent of the traditional PI3K–AKT cascade, and MET interacted with vacuolar ATP synthase (V-ATPase) and mediated the activation of mammalian target of rapamycin (MTOR), thus suppressing liver cancer immunogenicity. The efficacy of chemotherapy-based liver cancer vaccination was markedly enhanced by targeting the MET–V-ATPase–MTOR axis, highlighting a translational strategy for identifying MET-associated drug candidates for cancer prevention.
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15
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Kiepas A, Voorand E, Senecal J, Ahn R, Annis MG, Jacquet K, Tali G, Bisson N, Ursini-Siegel J, Siegel PM, Brown CM. The SHCA adapter protein cooperates with lipoma-preferred partner in the regulation of adhesion dynamics and invadopodia formation. J Biol Chem 2020; 295:10535-10559. [PMID: 32299913 DOI: 10.1074/jbc.ra119.011903] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 04/14/2020] [Indexed: 12/12/2022] Open
Abstract
SHC adaptor protein (SHCA) and lipoma-preferred partner (LPP) mediate transforming growth factor β (TGFβ)-induced breast cancer cell migration and invasion. Reduced expression of either protein diminishes breast cancer lung metastasis, but the reason for this effect is unclear. Here, using total internal reflection fluorescence (TIRF) microscopy, we found that TGFβ enhanced the assembly and disassembly rates of paxillin-containing adhesions in an SHCA-dependent manner through the phosphorylation of the specific SHCA tyrosine residues Tyr-239, Tyr-240, and Tyr-313. Using a BioID proximity labeling approach, we show that SHCA exists in a complex with a variety of actin cytoskeletal proteins, including paxillin and LPP. Consistent with a functional interaction between SHCA and LPP, TGFβ-induced LPP localization to cellular adhesions depended on SHCA. Once localized to the adhesions, LPP was required for TGFβ-induced increases in cell migration and adhesion dynamics. Mutations that impaired LPP localization to adhesions (mLIM1) or impeded interactions with the actin cytoskeleton via α-actinin (ΔABD) abrogated migratory responses to TGFβ. Live-cell TIRF microscopy revealed that SHCA clustering at the cell membrane preceded LPP recruitment. We therefore hypothesize that, in the presence of TGFβ, SHCA promotes the formation of small, dynamic adhesions by acting as a nucleator of focal complex formation. Finally, we defined a previously unknown function for SHCA in the formation of invadopodia, a process that also required LPP. Our results reveal that SHCA controls the formation and function of adhesions and invadopodia, two key cellular structures required for breast cancer metastasis.
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Affiliation(s)
- Alex Kiepas
- Department of Physiology, McGill University, Montréal H3G 1Y6, Québec, Canada.,Goodman Cancer Research Centre, McGill University, Montréal H3A 1A3, Québec, Canada
| | - Elena Voorand
- Goodman Cancer Research Centre, McGill University, Montréal H3A 1A3, Québec, Canada.,Department of Biochemistry, McGill University, Montréal H3G 1Y6, Québec, Canada
| | - Julien Senecal
- Goodman Cancer Research Centre, McGill University, Montréal H3A 1A3, Québec, Canada.,Division of Experimental Medicine, McGill University, Montréal H4A 3J1, Québec, Canada
| | - Ryuhjin Ahn
- Division of Experimental Medicine, McGill University, Montréal H4A 3J1, Québec, Canada.,Lady Davis Institute for Medical Research, Montréal, Québec H3T 1E2, Canada
| | - Matthew G Annis
- Goodman Cancer Research Centre, McGill University, Montréal H3A 1A3, Québec, Canada.,Department of Medicine, McGill University, Montréal H3G 1Y6, Québec, Canada
| | - Kévin Jacquet
- Centre de recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Québec, Québec G1R 2J6, Canada
| | - George Tali
- Department of Physiology, McGill University, Montréal H3G 1Y6, Québec, Canada
| | - Nicolas Bisson
- Centre de recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Québec, Québec G1R 2J6, Canada.,PROTEO Network and Cancer Research Centre, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Josie Ursini-Siegel
- Department of Biochemistry, McGill University, Montréal H3G 1Y6, Québec, Canada.,Lady Davis Institute for Medical Research, Montréal, Québec H3T 1E2, Canada.,Department of Oncology, McGill University, Montréal H4A 3T2, Québec, Canada
| | - Peter M Siegel
- Goodman Cancer Research Centre, McGill University, Montréal H3A 1A3, Québec, Canada .,Department of Biochemistry, McGill University, Montréal H3G 1Y6, Québec, Canada.,Department of Medicine, McGill University, Montréal H3G 1Y6, Québec, Canada
| | - Claire M Brown
- Department of Physiology, McGill University, Montréal H3G 1Y6, Québec, Canada .,Advanced BioImaging Facility (ABIF), McGill University, Montréal H3G 0B1, Québec, Canada
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16
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Rontogianni S, Synadaki E, Li B, Liefaard MC, Lips EH, Wesseling J, Wu W, Altelaar M. Proteomic profiling of extracellular vesicles allows for human breast cancer subtyping. Commun Biol 2019; 2:325. [PMID: 31508500 PMCID: PMC6722120 DOI: 10.1038/s42003-019-0570-8] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 08/01/2019] [Indexed: 12/11/2022] Open
Abstract
Extracellular vesicles (EVs) are a potential source of disease-associated biomarkers for diagnosis. In breast cancer, comprehensive analyses of EVs could yield robust and reliable subtype-specific biomarkers that are still critically needed to improve diagnostic routines and clinical outcome. Here, we show that proteome profiles of EVs secreted by different breast cancer cell lines are highly indicative of their respective molecular subtypes, even more so than the proteome changes within the cancer cells. Moreover, we detected molecular evidence for subtype-specific biological processes and molecular pathways, hyperphosphorylated receptors and kinases in connection with the disease, and compiled a set of protein signatures that closely reflect the associated clinical pathophysiology. These unique features revealed in our work, replicated in clinical material, collectively demonstrate the potential of secreted EVs to differentiate between breast cancer subtypes and show the prospect of their use as non-invasive liquid biopsies for diagnosis and management of breast cancer patients.
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Affiliation(s)
- Stamatia Rontogianni
- 1Biomolecular Mass Spectrometry and Proteomics Group, Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, The Netherlands.,Netherlands Proteomics Center, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Eleni Synadaki
- 1Biomolecular Mass Spectrometry and Proteomics Group, Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, The Netherlands.,Netherlands Proteomics Center, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Bohui Li
- 1Biomolecular Mass Spectrometry and Proteomics Group, Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, The Netherlands.,Netherlands Proteomics Center, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Marte C Liefaard
- 3Division of Molecular Pathology, The Netherlands Cancer Institute, 1066 CX Amsterdam, The Netherlands
| | - Esther H Lips
- 3Division of Molecular Pathology, The Netherlands Cancer Institute, 1066 CX Amsterdam, The Netherlands
| | - Jelle Wesseling
- 3Division of Molecular Pathology, The Netherlands Cancer Institute, 1066 CX Amsterdam, The Netherlands.,4Department of Pathology, The Netherlands Cancer Institute, 1066 CX Amsterdam, The Netherlands
| | - Wei Wu
- 1Biomolecular Mass Spectrometry and Proteomics Group, Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, The Netherlands.,Netherlands Proteomics Center, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Maarten Altelaar
- 1Biomolecular Mass Spectrometry and Proteomics Group, Utrecht Institute for Pharmaceutical Science, Utrecht University, Utrecht, The Netherlands.,Netherlands Proteomics Center, Padualaan 8, 3584 CH Utrecht, The Netherlands.,5Mass Spectrometry and Proteomics Facility, The Netherlands Cancer Institute, 1066 CX Amsterdam, The Netherlands
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17
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Hou B, Xu S, Xu Y, Gao Q, Zhang C, Liu L, Yang H, Jiang X, Che Y. Grb2 binds to PTEN and regulates its nuclear translocation to maintain the genomic stability in DNA damage response. Cell Death Dis 2019; 10:546. [PMID: 31320611 PMCID: PMC6639399 DOI: 10.1038/s41419-019-1762-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 06/06/2019] [Accepted: 06/07/2019] [Indexed: 12/03/2022]
Abstract
Growth factor receptor bound protein 2 (Grb2) is an adaptor protein critical for signal transduction and endocytosis, but its role in DNA damage response (DDR) remains unknown. Here, we report that either knockdown of Grb2 or overexpression of the mutated Grb2 promotes micronuclei formation in response to oxidative stress. Furthermore, Grb2 was demonstrated to interact with phosphatase and tensin homologue (PTEN; a tumor suppressor essential for nuclear stability), and the loss of Grb2 reduced the nuclear-localized PTEN, which was further decreased upon stimulation with hydrogen peroxide (H2O2). Overexpression of the T398A-mutated, nuclear-localized PTEN reduced micronuclei frequency in the cells deficient of functional Grb2 via rescuing the H2O2-dependent expression of Rad51, a protein essential for the homologous recombination (HR) repair process. Moreover, depletion of Grb2 markedly decreased the expression of Rad51 and its interaction with PTEN. Notably, Rad51 showed a preference to immunoprecipation with the T398A-PTEN mutant, and silencing of Rad51 alone accumulated micronuclei concurring with decreased expression of both Grb2 and PTEN. Our findings indicate that Grb2 interacts with PTEN and Rad51 to regulate genomic stability in DDR by mediating the nuclear translocation of PTEN to affect the expression of Rad51.
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Affiliation(s)
- Bolin Hou
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, 100101, Beijing, China.,University of Chinese Academy of Sciences, 100039, Beijing, China
| | - Shanshan Xu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, 100101, Beijing, China.,University of Chinese Academy of Sciences, 100039, Beijing, China
| | - Yang Xu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, 100050, Beijing, China
| | - Quan Gao
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, 100101, Beijing, China.,University of Chinese Academy of Sciences, 100039, Beijing, China
| | - Caining Zhang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, 100101, Beijing, China.,University of Chinese Academy of Sciences, 100039, Beijing, China
| | - Ling Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, 100101, Beijing, China
| | - Huaiyi Yang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, 100101, Beijing, China
| | - Xuejun Jiang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, 100101, Beijing, China.
| | - Yongsheng Che
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, 100050, Beijing, China.
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18
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Bandaru P, Kondo Y, Kuriyan J. The Interdependent Activation of Son-of-Sevenless and Ras. Cold Spring Harb Perspect Med 2019; 9:cshperspect.a031534. [PMID: 29610148 DOI: 10.1101/cshperspect.a031534] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The guanine-nucleotide exchange factor (GEF) Son-of-Sevenless (SOS) plays a critical role in metazoan signaling by converting Ras•GDP (guanosine diphosphate) to Ras•GTP (guanosine triphosphate) in response to tyrosine kinase activation. Structural studies have shown that SOS differs from other Ras-specific GEFs in that SOS is itself activated by Ras•GTP binding to an allosteric site, distal to the site of nucleotide exchange. The activation of SOS involves membrane recruitment and conformational changes, triggered by lipid binding, that open the allosteric binding site for Ras•GTP. This is in contrast to other Ras-specific GEFs, which are activated by second messengers that more directly affect the active site. Allosteric Ras•GTP binding stabilizes SOS at the membrane, where it can turn over other Ras molecules processively, leading to an ultrasensitive response that is distinct from that of other Ras-specific GEFs.
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Affiliation(s)
- Pradeep Bandaru
- Department of Molecular and Cell Biology, California Institute for Quantitative Biosciences, Howard Hughes Medical Institute, University of California, Berkeley, California 94720
| | - Yasushi Kondo
- Department of Molecular and Cell Biology, California Institute for Quantitative Biosciences, Howard Hughes Medical Institute, University of California, Berkeley, California 94720
| | - John Kuriyan
- Departments of Molecular and Cell Biology and of Chemistry, California Institute for Quantitative Biosciences, Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Howard Hughes Medical Institute, University of California, Berkeley, California 94720
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19
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Xu P, Chen AY, Ganaie SS, Cheng F, Shen W, Wang X, Kleiboeker S, Li Y, Qiu J. The 11-Kilodalton Nonstructural Protein of Human Parvovirus B19 Facilitates Viral DNA Replication by Interacting with Grb2 through Its Proline-Rich Motifs. J Virol 2019; 93:e01464-18. [PMID: 30282717 PMCID: PMC6288338 DOI: 10.1128/jvi.01464-18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 10/01/2018] [Indexed: 12/27/2022] Open
Abstract
Lytic infection of human parvovirus B19 (B19V) takes place exclusively in human erythroid progenitor cells of bone marrow and fetal liver, which disrupts erythropoiesis. During infection, B19V expresses three nonstructural proteins (NS1, 11-kDa, and 7.5-kDa) and two structural proteins (VP1 and VP2). While NS1 is essential for B19V DNA replication, 11-kDa enhances viral DNA replication significantly. In this study, we confirmed the enhancement role of 11-kDa in viral DNA replication and elucidated the underlying mechanism. We found that 11-kDa specially interacts with cellular growth factor receptor-bound protein 2 (Grb2) during virus infection and in vitro We determined a high affinity interaction between 11-kDa and Grb2 that has an equilibrium dissociation constant (KD ) value of 18.13 nM. In vitro, one proline-rich motif was sufficient for 11-kDa to sustain a strong interaction with Grb2. In consistence, in vivo during infection, one proline-rich motif was enough for 11-kDa to significantly reduce phosphorylation of extracellular signal-regulated kinase (ERK). Mutations of all three proline-rich motifs of 11-kDa abolished its capability to reduce ERK activity and, accordingly, decreased viral DNA replication. Transduction of a lentiviral vector encoding a short hairpin RNA (shRNA) targeting Grb2 decreased the expression of Grb2 as well as the level of ERK phosphorylation, which resulted in an increase of B19V replication. These results, in concert, indicate that the B19V 11-kDa protein interacts with cellular Grb2 to downregulate ERK activity, which upregulates viral DNA replication.IMPORTANCE Human parvovirus B19 (B19V) infection causes hematological disorders and is the leading cause of nonimmunological fetal hydrops during pregnancy. During infection, B19V expresses two structural proteins, VP1 and VP2, and three nonstructural proteins, NS1, 11-kDa, and 7.5-kDa. While NS1 is essential, 11-kDa plays an enhancing role in viral DNA replication. Here, we elucidated a mechanism underlying 11-kDa protein-regulated B19V DNA replication. 11-kDa is tightly associated with cellular growth factor receptor-bound protein 2 (Grb2) during infection. In vitro, 11-kDa interacts with Grb2 with high affinity through three proline-rich motifs, of which at least one is indispensable for the regulation of viral DNA replication. 11-kDa and Grb2 interaction disrupts extracellular signal-regulated kinase (ERK) signaling, which mediates upregulation of B19V replication. Thus, our study reveals a novel mechanism of how a parvoviral small nonstructural protein regulates viral DNA replication by interacting with a host protein that is predominately expressed in the cytoplasm.
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Affiliation(s)
- Peng Xu
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Aaron Yun Chen
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Safder S Ganaie
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Fang Cheng
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Weiran Shen
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Xiaomei Wang
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Biological Science and Technology, Wuhan University of Bioengineering, Wuhan, China
| | - Steve Kleiboeker
- Department of Research and Development, Viracor Eurofins Laboratories, Lee's Summit, Missouri, USA
| | - Yi Li
- Department of Biological Science and Technology, Wuhan University of Bioengineering, Wuhan, China
| | - Jianming Qiu
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
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20
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p66Shc activation promotes increased oxidative phosphorylation and renders CNS cells more vulnerable to amyloid beta toxicity. Sci Rep 2018; 8:17081. [PMID: 30459314 PMCID: PMC6244282 DOI: 10.1038/s41598-018-35114-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 10/28/2018] [Indexed: 12/26/2022] Open
Abstract
A key pathological feature of Alzheimer's disease (AD) is the accumulation of the neurotoxic amyloid beta (Aβ) peptide within the brains of affected individuals. Previous studies have shown that neuronal cells selected for resistance to Aβ toxicity display a metabolic shift from mitochondrial-dependent oxidative phosphorylation (OXPHOS) to aerobic glycolysis to meet their energy needs. The Src homology/collagen (Shc) adaptor protein p66Shc is a key regulator of mitochondrial function, ROS production and aging. Moreover, increased expression and activation of p66Shc promotes a shift in the cellular metabolic state from aerobic glycolysis to OXPHOS in cancer cells. Here we evaluated the hypothesis that activation of p66Shc in CNS cells promotes both increased OXPHOS and enhanced sensitivity to Aβ toxicity. The effect of altered p66Shc expression on metabolic activity was assessed in rodent HT22 and B12 cell lines of neuronal and glial origin respectively. Overexpression of p66Shc repressed glycolytic enzyme expression and increased both mitochondrial electron transport chain activity and ROS levels in HT22 cells. The opposite effect was observed when endogenous p66Shc expression was knocked down in B12 cells. Moreover, p66Shc activation in both cell lines increased their sensitivity to Aβ toxicity. Our findings indicate that expression and activation of p66Shc renders CNS cells more sensitive to Aβ toxicity by promoting mitochondrial OXPHOS and ROS production while repressing aerobic glycolysis. Thus, p66Shc may represent a potential therapeutically relevant target for the treatment of AD.
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21
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Tang WF, Huang RT, Chien KY, Tang P, Horng JT. Large-Scale Proteomic Identification of Targets of Cellular miR-197 Downregulated by Enterovirus A71. J Proteome Res 2018; 18:449-460. [PMID: 30336044 DOI: 10.1021/acs.jproteome.8b00762] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
MicroRNAs are noncoding RNA species comprising 18-23 nucleotides that regulate host-virus interaction networks. Here, we show that enterovirus A71 infection in human rhabdomyosarcoma (RD) is regulated by miR-197 expression. Transfection of miR-197 mimic into RD cells inhibited virus replication by interfering with the viral RNA synthesis. We employed a combination of mass-spectrometry-based quantitative proteomics with the stable isotope labeling with amino acids in cell culture (SILAC) approach for the identification of the miR-197 target genes in RD cells and to investigate the differential expression of the prospective target proteins. A total of 1822 proteins were repeatedly identified in miR-197-transfected RD cells, 106 of which were predicted to have seed sites by TargetScan. Notably, seven of eight selected genes potentially related to viral replication and immune response were validated as direct miR-197 targets, using a luciferase 3'-untranslated region (UTR) reporter assay. The expression levels of three selected endogenous molecules (ITGAV, ETF1, and MAP2K1/MEK1) were significantly reduced when RD cells were transfected with a miR-197 mimic. Our results provide a comprehensive database of miR-197 targets, which might provide better insights into the understanding of host-virus interaction.
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Affiliation(s)
- Wen-Fang Tang
- Department of Biochemistry and Molecular Biology, College of Medicine , Chang Gung University , Taoyuan 333 , Taiwan.,Research Center for Emerging Viral Infections , Chang Gung University , Taoyuan 333 , Taiwan
| | - Ru-Ting Huang
- Department of Biochemistry and Molecular Biology, College of Medicine , Chang Gung University , Taoyuan 333 , Taiwan
| | - Kun-Yi Chien
- Department of Biochemistry and Molecular Biology, College of Medicine , Chang Gung University , Taoyuan 333 , Taiwan.,Clinical Proteomics Core Laboratory , Chang Gung Memorial Hospital , Taoyuan 333 , Taiwan
| | - Petrus Tang
- Bioinformatics Center , Chang Gung University, Chang Gung University , Taoyuan 333 , Taiwan.,Molecular Infectious Disease Research Center , Chang Gung Memorial Hospital , Taoyuan 333 , Taiwan
| | - Jim-Tong Horng
- Department of Biochemistry and Molecular Biology, College of Medicine , Chang Gung University , Taoyuan 333 , Taiwan.,Molecular Infectious Disease Research Center , Chang Gung Memorial Hospital , Taoyuan 333 , Taiwan.,Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety and Graduate Institute of Health Industry Technology, College of Human Ecology , Chang Gung University of Science and Technology , Taoyuan 333 , Taiwan.,Research Center for Emerging Viral Infections , Chang Gung University , Taoyuan 333 , Taiwan
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22
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Exploring Protein⁻Protein Interaction in the Study of Hormone-Dependent Cancers. Int J Mol Sci 2018; 19:ijms19103173. [PMID: 30326622 PMCID: PMC6213999 DOI: 10.3390/ijms19103173] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/09/2018] [Accepted: 10/10/2018] [Indexed: 12/20/2022] Open
Abstract
Estrogen receptors promote target gene transcription when they form a dimer, in which two identical (homodimer) or different (heterodimer) proteins are bound to each other. In hormone-dependent cancers, hormone receptor dimerization plays pivotal roles, not only in the pathogenesis or development of the tumors, but also in the development of therapeutic resistance. Protein–protein interactions (PPIs), including dimerization and complex formation, have been also well-known to be required for proteins to exert their functions. The methods which could detect PPIs are genetic engineering (i.e., resonance energy transfer) and/or antibody technology (i.e., co-immunoprecipitation) using cultured cells. In addition, visualization of the target proteins in tissues can be performed using antigen–antibody reactions, as in immunohistochemistry. Furthermore, development of microscopic techniques (i.e., electron microscopy and confocal laser microscopy) has made it possible to visualize intracellular and/or intranuclear organelles. We have recently reported the visualization of estrogen receptor dimers in breast cancer tissues by using the in situ proximity ligation assay (PLA). PLA was developed along the lines of antibody technology development, and this assay has made it possible to visualize PPIs in archival tissue specimens. Localization of PPI in organelles has also become possible using super-resolution microscopes exceeding the resolution limit of conventional microscopes. Therefore, in this review, we summarize the methodologies used for studying PPIs in both cells and tissues, and review the recently reported studies on PPIs of hormones.
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23
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Sung MS, Jung JH, Jeong C, Yoon TY, Park JH. Single-Molecule Co-Immunoprecipitation Reveals Functional Inheritance of EGFRs in Extracellular Vesicles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1802358. [PMID: 30239124 DOI: 10.1002/smll.201802358] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/09/2018] [Indexed: 06/08/2023]
Abstract
Cancer cells actively release extracellular vesicles (EVs) as important carriers of cellular information to tumor microenvironments. Although the composition and quantity of the proteins contained in EVs are characterized, it remains unknown how these proteins in EVs are related to those in the original cells at the functional level. With epidermal growth factor receptor (EGFR) in lung adenocarcinoma cells as a model oncoprotein, it is studied how distinct types of EVs, microvesicles and exosomes, represent their original cells at the protein and protein-protein interaction (PPI) level. Using the recently developed single-molecule immunolabeling and co-immunoprecipitation schemes, the quantity and PPI strengths of EGFRs derived from EVs and the original lung adenocarcinoma cells are determined. It is found that the microvesicles exhibit higher correlations with the original cells than the exosomes in terms of the EGFR levels and their PPI patterns. In spite of these detailed differences between the microvesicles and exosomes, the EGFR PPI strengths measured for EVs generally show a tight correlation with those determined for the original cells. The results suggest that EGFRs contained in EVs closely reflect the cellular EGFR in terms of their downstream signaling capacity.
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Affiliation(s)
- Mi Sook Sung
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul, 30722, South Korea
- Yonsei-IBS Institute, Yonsei University, Seoul, 30722, South Korea
- School of Biological Sciences and Institute for Molecular Biology and Genetics, Seoul National University, Seoul, 08826, South Korea
| | - Jik-Han Jung
- Department of Bio and Brain Engineering and KAIST Institute for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea
| | - Cherlhyun Jeong
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, South Korea
- KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul, 02447, South Korea
| | - Tae-Young Yoon
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul, 30722, South Korea
- Yonsei-IBS Institute, Yonsei University, Seoul, 30722, South Korea
- School of Biological Sciences and Institute for Molecular Biology and Genetics, Seoul National University, Seoul, 08826, South Korea
| | - Ji-Ho Park
- Department of Bio and Brain Engineering and KAIST Institute for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea
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24
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Wu X, Zahari MS, Renuse S, Sahasrabuddhe NA, Chaerkady R, Kim MS, Fackler MJ, Stampfer M, Gabrielson E, Sukumar S, Pandey A. Quantitative phosphoproteomic analysis reveals reciprocal activation of receptor tyrosine kinases between cancer epithelial cells and stromal fibroblasts. Clin Proteomics 2018; 15:21. [PMID: 29946230 PMCID: PMC6003199 DOI: 10.1186/s12014-018-9197-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 06/04/2018] [Indexed: 02/07/2023] Open
Abstract
Background Cancer-associated fibroblasts (CAFs) are one of the most important components of tumor stroma and play a key role in modulating tumor growth. However, a mechanistic understanding of how CAFs communicate with tumor cells to promote their proliferation and invasion is far from complete. A major reason for this is that most current techniques and model systems do not capture the complexity of signal transduction that occurs between CAFs and tumor cells. Methods In this study, we employed a stable isotope labeling with amino acids in cell culture (SILAC) strategy to label invasive breast cancer cells, MDA-MB-231, and breast cancer patient-derived CAF this has already been defined above cells. We used an antibody-based phosphotyrosine peptide enrichment method coupled to LC-MS/MS to catalog and quantify tyrosine phosphorylation-mediated signal transduction events induced by the bidirectional communication between patient-derived CAFs and tumor cells. Results We discovered that distinct signaling events were activated in CAFs and in tumor epithelial cells during the crosstalk between these two cell types. We identified reciprocal activation of a number of receptor tyrosine kinases including EGFR, FGFR1 and EPHA2 induced by this bidirectional communication. Conclusions Our study not only provides insights into the mechanisms of the interaction between CAFs and tumor cells, but the model system described here could be used as a prototype for analysis of intercellular communication in many different tumor microenvironments.
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Affiliation(s)
- Xinyan Wu
- 1Department of Biological Chemistry, Johns Hopkins University, Baltimore, MD USA.,2McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD USA.,8Johns Hopkins University, 733 N. Broadway, Baltimore, MD 21205 USA
| | - Muhammad Saddiq Zahari
- 1Department of Biological Chemistry, Johns Hopkins University, Baltimore, MD USA.,2McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD USA
| | - Santosh Renuse
- 1Department of Biological Chemistry, Johns Hopkins University, Baltimore, MD USA.,2McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD USA.,3Institute of Bioinformatics, International Technology Park, Bangalore, 560066 India
| | - Nandini A Sahasrabuddhe
- 1Department of Biological Chemistry, Johns Hopkins University, Baltimore, MD USA.,2McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD USA.,3Institute of Bioinformatics, International Technology Park, Bangalore, 560066 India.,4Manipal Academy of Higher Education, Manipal, Karnataka 576104 India
| | - Raghothama Chaerkady
- 1Department of Biological Chemistry, Johns Hopkins University, Baltimore, MD USA.,2McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD USA
| | - Min-Sik Kim
- 1Department of Biological Chemistry, Johns Hopkins University, Baltimore, MD USA.,2McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD USA
| | - Mary Jo Fackler
- 5Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
| | - Martha Stampfer
- 7Division of Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, CA USA
| | - Edward Gabrielson
- 5Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA.,6Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
| | - Saraswati Sukumar
- 5Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
| | - Akhilesh Pandey
- 1Department of Biological Chemistry, Johns Hopkins University, Baltimore, MD USA.,2McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University, Baltimore, MD USA.,3Institute of Bioinformatics, International Technology Park, Bangalore, 560066 India.,8Johns Hopkins University, 733 N. Broadway, Baltimore, MD 21205 USA
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25
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Heritable, Allele-Specific Chromosomal Looping between Tandem Promoters Specifies Promoter Usage of SHC1. Mol Cell Biol 2018; 38:MCB.00658-17. [PMID: 29440311 DOI: 10.1128/mcb.00658-17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 02/08/2018] [Indexed: 11/20/2022] Open
Abstract
One-half of the genes in the human genome contain alternative promoters, some of which generate products with opposing functions. Aberrant silencing or activation of such alternative promoters is associated with multiple diseases, including cancer, but little is known regarding the molecular mechanisms that control alternative promoter choice. The SHC1 gene encodes p46Shc/p52Shc and p66Shc, proteins oppositely regulating anchorage-independent growth that are produced by transcription initiated from the upstream and downstream tandem promoters of SHC1, respectively. Here we demonstrate that activation of these promoters is mutually exclusive on separate alleles in single primary endothelial cells in a heritable fashion, ensuring expression of both transcripts by the cell. Peripheral blood lymphocytes that do not transcribe p66Shc transcribed p52Shc biallelically. This distinct monoallelic transcription pattern is established by allele-specific chromosomal looping between tandem promoters, which silences the upstream promoter. Our results reveal a new mechanism to control alternative promoter usage through higher-order chromatin structure.
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26
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Lee HW, Choi B, Kang HN, Kim H, Min A, Cha M, Ryu JY, Park S, Sohn J, Shin K, Yun MR, Han JY, Shon MJ, Jeong C, Chung J, Lee SH, Im SA, Cho BC, Yoon TY. Profiling of protein–protein interactions via single-molecule techniques predicts the dependence of cancers on growth-factor receptors. Nat Biomed Eng 2018; 2:239-253. [DOI: 10.1038/s41551-018-0212-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 02/23/2018] [Indexed: 02/04/2023]
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27
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Lecointre C, Simon V, Kerneur C, Allemand F, Fournet A, Montarras I, Pons JL, Gelin M, Brignatz C, Urbach S, Labesse G, Roche S. Dimerization of the Pragmin Pseudo-Kinase Regulates Protein Tyrosine Phosphorylation. Structure 2018; 26:545-554.e4. [PMID: 29503074 DOI: 10.1016/j.str.2018.01.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/12/2018] [Accepted: 01/29/2018] [Indexed: 12/31/2022]
Abstract
The pseudo-kinase and signaling protein Pragmin has been linked to cancer by regulating protein tyrosine phosphorylation via unknown mechanisms. Here we present the crystal structure of the Pragmin 906-1,368 amino acid C terminus, which encompasses its kinase domain. We show that Pragmin contains a classical protein-kinase fold devoid of catalytic activity, despite a conserved catalytic lysine (K997). By proteomics, we discovered that this pseudo-kinase uses the tyrosine kinase CSK to induce protein tyrosine phosphorylation in human cells. Interestingly, the protein-kinase domain is flanked by N- and C-terminal extensions forming an original dimerization domain that regulates Pragmin self-association and stimulates CSK activity. A1329E mutation in the C-terminal extension destabilizes Pragmin dimerization and reduces CSK activation. These results reveal a dimerization mechanism by which a pseudo-kinase can induce protein tyrosine phosphorylation. Further sequence-structure analysis identified an additional member (C19orf35) of the superfamily of dimeric Pragmin/SgK269/PEAK1 pseudo-kinases.
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Affiliation(s)
- Céline Lecointre
- CRBM, "Equipe Labellisée Ligue Contre le Cancer", Univ Montpellier, CNRS, 34000 Montpellier, France
| | - Valérie Simon
- CRBM, "Equipe Labellisée Ligue Contre le Cancer", Univ Montpellier, CNRS, 34000 Montpellier, France
| | - Clément Kerneur
- CRBM, "Equipe Labellisée Ligue Contre le Cancer", Univ Montpellier, CNRS, 34000 Montpellier, France
| | | | - Aurélie Fournet
- CBS, Univ Montpellier, CNRS, INSERM, 34090 Montpellier, France
| | - Ingrid Montarras
- CRBM, "Equipe Labellisée Ligue Contre le Cancer", Univ Montpellier, CNRS, 34000 Montpellier, France
| | - Jean-Luc Pons
- CBS, Univ Montpellier, CNRS, INSERM, 34090 Montpellier, France
| | - Muriel Gelin
- CBS, Univ Montpellier, CNRS, INSERM, 34090 Montpellier, France
| | - Constance Brignatz
- CRBM, "Equipe Labellisée Ligue Contre le Cancer", Univ Montpellier, CNRS, 34000 Montpellier, France
| | - Serge Urbach
- IGF, Univ Montpellier, CNRS, INSERM, 34090 Montpellier, France
| | - Gilles Labesse
- CBS, Univ Montpellier, CNRS, INSERM, 34090 Montpellier, France.
| | - Serge Roche
- CRBM, "Equipe Labellisée Ligue Contre le Cancer", Univ Montpellier, CNRS, 34000 Montpellier, France.
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28
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Zhao MH, Hu J, Li S, Wu Q, Lu P. P66Shc expression in diabetic rat retina. BMC Ophthalmol 2018; 18:58. [PMID: 29482510 PMCID: PMC6389069 DOI: 10.1186/s12886-018-0724-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 02/20/2018] [Indexed: 01/05/2023] Open
Abstract
Background P66Shc is partially localised within the mitochondrial fraction. It is primarily related to the generation of mitochondrial reactive oxygen species and apoptosis. Based on previous studies, we hypothesize that in the retina, p66Shc may exist and affect the development of diabetic retinopathy. The purpose of this study was to investigate p66Shc expression in retinal in streptozotocin-induced diabetic (SD) rats, which may provide a pathway to study the pathogenesis of diabetic retinopathy. Methods Reverse transcription-polymerase chain reaction (RT-PCR) and western blot were used to detect retinal p66Shc mRNA and protein expression in SD rats, respectively. Immunohistochemical staining was applied to detect the location of rat retinal p66Shc expression. TUNEL assay was applied to detect the number of apoptotic cells. Results P66Shc expression was found in the retina of normal and diabetic rats, and the level of mRNA and protein expression increased with the progression of diabetes mellitus (DM). P66Shc expression was mainly located in the retinal ganglion cell layer and inner nuclear layer. Compared with the normal group, retinal cell tissue apoptosis rate in the D12w group was significantly increased. Conclusion Rat retinal p66Shc expression was mainly in the ganglion cell layer and inner nuclear layer. As the degree of DM progressed, p66Shc expression gradually increased, and the number of apoptotic cells also increased.
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Affiliation(s)
- Ming-Hui Zhao
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, China.,Department of Ophthalmology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Jianyan Hu
- Department of Ophthalmology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Shufeng Li
- Department of Ophthalmology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Qiang Wu
- Department of Ophthalmology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Peirong Lu
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, China.
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29
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Ha JR, Ahn R, Smith HW, Sabourin V, Hébert S, Cepeda Cañedo E, Im YK, Kleinman CL, Muller WJ, Ursini-Siegel J. Integration of Distinct ShcA Signaling Complexes Promotes Breast Tumor Growth and Tyrosine Kinase Inhibitor Resistance. Mol Cancer Res 2018; 16:894-908. [PMID: 29453318 DOI: 10.1158/1541-7786.mcr-17-0623] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 12/20/2017] [Accepted: 01/26/2018] [Indexed: 11/16/2022]
Abstract
The commonality between most phospho-tyrosine signaling networks is their shared use of adaptor proteins to transduce mitogenic signals. ShcA (SHC1) is one such adaptor protein that employs two phospho-tyrosine binding domains (PTB and SH2) and key phospho-tyrosine residues to promote mammary tumorigenesis. Receptor tyrosine kinases (RTK), such as ErbB2, bind the ShcA PTB domain to promote breast tumorigenesis by engaging Grb2 downstream of the ShcA tyrosine phosphorylation sites to activate AKT/mTOR signaling. However, breast tumors also rely on the ShcA PTB domain to bind numerous negative regulators that limit activation of secondary mitogenic signaling networks. This study examines the role of PTB-independent ShcA pools in controlling breast tumor growth and resistance to tyrosine kinase inhibitors. We demonstrate that PTB-independent ShcA complexes predominately rely on the ShcA SH2 domain to activate multiple Src family kinases (SFK), including Src and Fyn, in ErbB2-positive breast cancers. Using genetic and pharmacologic approaches, we show that PTB-independent ShcA complexes augment mammary tumorigenesis by increasing the activity of the Src and Fyn tyrosine kinases in an SH2-dependent manner. This bifurcation of signaling complexes from distinct ShcA pools transduces non-redundant signals that integrate the AKT/mTOR and SFK pathways to cooperatively increase breast tumor growth and resistance to tyrosine kinase inhibitors, including lapatinib and PP2. This study mechanistically dissects how the interplay between diverse intracellular ShcA complexes impacts the tyrosine kinome to affect breast tumorigenesis.Implications: The ShcA adaptor, within distinct signaling complexes, impacts tyrosine kinase signaling, breast tumor growth, and resistance to tyrosine kinase inhibitors. Mol Cancer Res; 16(5); 894-908. ©2018 AACR.
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Affiliation(s)
- Jacqueline R Ha
- Lady Davis Institute for Medical Research, Montréal, Quebec, Canada
- Division of Experimental Medicine, McGill University, Montréal, Quebec, Canada
| | - Ryuhjin Ahn
- Lady Davis Institute for Medical Research, Montréal, Quebec, Canada
- Division of Experimental Medicine, McGill University, Montréal, Quebec, Canada
| | - Harvey W Smith
- Department of Biochemistry, McIntyre Medical Building, McGill University, Montréal, Quebec, Canada
- Goodman Cancer Research Centre, Montréal, Quebec, Canada
| | - Valerie Sabourin
- Lady Davis Institute for Medical Research, Montréal, Quebec, Canada
| | - Steven Hébert
- Lady Davis Institute for Medical Research, Montréal, Quebec, Canada
| | - Eduardo Cepeda Cañedo
- Lady Davis Institute for Medical Research, Montréal, Quebec, Canada
- Division of Experimental Medicine, McGill University, Montréal, Quebec, Canada
| | - Young Kyuen Im
- Lady Davis Institute for Medical Research, Montréal, Quebec, Canada
- Division of Experimental Medicine, McGill University, Montréal, Quebec, Canada
| | - Claudia L Kleinman
- Lady Davis Institute for Medical Research, Montréal, Quebec, Canada
- Department of Human Genetics, Strathcona Anatomy & Dentistry Building, McGill University, Montréal, Quebec, Canada
| | - William J Muller
- Department of Biochemistry, McIntyre Medical Building, McGill University, Montréal, Quebec, Canada
- Department of Human Genetics, Strathcona Anatomy & Dentistry Building, McGill University, Montréal, Quebec, Canada
| | - Josie Ursini-Siegel
- Lady Davis Institute for Medical Research, Montréal, Quebec, Canada.
- Division of Experimental Medicine, McGill University, Montréal, Quebec, Canada
- Department of Biochemistry, McIntyre Medical Building, McGill University, Montréal, Quebec, Canada
- Goodman Cancer Research Centre, Montréal, Quebec, Canada
- Gerald Bronfman Department of Oncology, McGill University, Montréal, Quebec, Canada
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30
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Wills MKB, Lau HR, Jones N. The ShcD phosphotyrosine adaptor subverts canonical EGF receptor trafficking. J Cell Sci 2017; 130:2808-2820. [PMID: 28724758 DOI: 10.1242/jcs.198903] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 07/09/2017] [Indexed: 12/15/2022] Open
Abstract
Shc family signalling adaptors connect activated transmembrane receptors to proximal effectors, and most also contain a sequence involved in clathrin-mediated receptor endocytosis. Notably, this AP2 adaptin-binding motif (AD) is absent from the ShcD (also known as Shc4) homolog, which also uniquely promotes ligand-independent phosphorylation of the epidermal growth factor receptor (EGFR). We now report that cultured cells expressing ShcD exhibit reduced EGF uptake, commensurate with a decrease in EGFR surface presentation. Under basal conditions, ShcD colocalises with the EGFR and facilitates its phosphorylation, ubiquitylation and accumulation in juxtanuclear vesicles identified as Rab11-positive endocytic recycling compartments. Accordingly, ShcD also functions as a constitutive binding partner for the E3 ubiquitin ligase Cbl. EGFR phosphorylation and focal accumulation likewise occur upon ShcD co-expression in U87 glioma cells. Loss of ShcD phosphotyrosine-binding function or insertion of the ShcA AD sequence each restore ligand acquisition through distinct mechanisms. The AD region also contains a nuclear export signal, indicating its multifunctionality. Overall, ShcD appears to possess several molecular permutations that actively govern the EGFR, which may have implications in development and disease.
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Affiliation(s)
- Melanie K B Wills
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Hayley R Lau
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Nina Jones
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada
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31
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van der Meulen T, Swarts S, Fischer W, van der Geer P. Identification of STS-1 as a novel ShcA-binding protein. Biochem Biophys Res Commun 2017; 490:1334-1339. [PMID: 28690151 DOI: 10.1016/j.bbrc.2017.07.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 07/05/2017] [Indexed: 11/19/2022]
Abstract
ShcA is a cytoplasmic signaling protein that supports signal transduction by receptor protein-tyrosine kinases by providing auxiliary tyrosine phosphorylation sites that engage additional signaling proteins. The principal binding partner for tyrosine phosphorylation sites on ShcA is Grb2. In the current study, we have used phosphotyrosine-containing peptides to isolate and identify STS-1 as a novel ShcA-binding protein. Our results further show that the interaction between STS-1 and ShcA is regulated in response to EGF receptor activation.
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Affiliation(s)
- Talitha van der Meulen
- Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182-1030, USA
| | - Spencer Swarts
- Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182-1030, USA
| | - Wolfgang Fischer
- Clayton Foundation Laboratories for Peptide Biology, The Salk Institute, 10010 North Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Peter van der Geer
- Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182-1030, USA.
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Tseng HY, Chen YA, Jen J, Shen PC, Chen LM, Lin TD, Wang YC, Hsu HL. Oncogenic MCT-1 activation promotes YY1-EGFR-MnSOD signaling and tumor progression. Oncogenesis 2017; 6:e313. [PMID: 28394354 PMCID: PMC5520490 DOI: 10.1038/oncsis.2017.13] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 01/10/2017] [Accepted: 02/10/2017] [Indexed: 12/20/2022] Open
Abstract
Tumor cells often produce high levels of reactive oxygen species (ROS) and display an increased ROS scavenging system. However, the molecular mechanism that balances antioxidative and oxidative stress in cancer cells is unclear. Here, we determined that oncogenic multiple copies in T-cell malignancy 1 (MCT-1) activity promotes the generation of intracellular ROS and mitochondrial superoxide. Overexpression of MCT-1 suppresses p53 accumulation but elevates the manganese-dependent superoxide dismutase (MnSOD) level via the YY1-EGFR signaling cascade, which protects cells against oxidative damage. Conversely, restricting ROS generation and/or targeting YY1 in lung cancer cells effectively inhibits the EGFR-MnSOD signaling pathway and cell invasiveness induced by MCT-1. Significantly, MCT-1 overexpression in lung cancer cells promotes tumor progression, necrosis and angiogenesis, and increases the number of tumor-promoting M2 macrophages and cancer-associated fibroblasts in the microenvironment. Clinical evidence further confirms that high expression of MCT-1 is associated with an increase in YY1, EGFR and MnSOD expression, accompanied by tumor recurrence, poor overall survival and EGFR mutation status in patients with lung cancers. Together, these data indicate that the MCT-1 oncogenic pathway is implicated in oxidative metabolism and lung carcinogenesis.
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Affiliation(s)
- H-Y Tseng
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, Taiwan
| | - Y-A Chen
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, Taiwan
| | - J Jen
- Department of Pharmacology, National Cheng Kung University, Tainan, Taiwan
| | - P-C Shen
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, Taiwan
| | - L-M Chen
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, Taiwan
| | - T-D Lin
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, Taiwan
| | - Y-C Wang
- Department of Pharmacology, National Cheng Kung University, Tainan, Taiwan
| | - H-L Hsu
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, Taiwan
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Zheng Z, Luan X, Zha J, Li Z, Wu L, Yan Y, Wang H, Hou D, Huang L, Huang F, Zheng H, Ge L, Guan H. TNF-α inhibits the migration of oral squamous cancer cells mediated by miR-765-EMP3-p66Shc axis. Cell Signal 2017; 34:102-109. [PMID: 28336231 DOI: 10.1016/j.cellsig.2017.03.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 03/15/2017] [Accepted: 03/19/2017] [Indexed: 12/31/2022]
Abstract
Whereas TNF-α can facilitate the metastasis of oral squamous cancer cells (OSCC), whether it inhibits the metastasis is not clear so far. In this study, we demonstrated that high dose TNF-α at 100ng/mL could in vitro significantly inhibit the migration of two OSCC cell lines, CAL-27 and SCC-25. To explore the related mechanisms, we focused on the involvement of the microRNAs and found that TNF-α increased the expression of miR-765. The upregulation of miR-765 was attributed to the inhibition of the migration. We showed that miR-765 directly targeted EMP3 and suppressed its expression. We also found that the expression of EMP3 was much higher in human oral squamous cancer in compare with the surrounding normal tissue. Interestingly, p66Shc, a downstream molecule in the EMP3-related signaling pathway, was increased by TNF-α. We found that the overexpression of p66Shc could suppress the migration through the enhanced E-cadherin and ZO-1 signals. Either silencing the expression of EMP3 or enhancing the expression of miR-765 could upregulate the expression of p66Shc. Together, our results demonstrated that TNF-α inhibited the metastasis of oral squamous cancer cell through the miR-765-EMP3-p66Shc axis, which may provide new insights for the therapy of oral squamous cancer.
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Affiliation(s)
- Zhichao Zheng
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Xiuwen Luan
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Southern Medical University, Guangzhou 510280, China
| | - Jun Zha
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Zhengmao Li
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Lihong Wu
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Yongyong Yan
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Haiyan Wang
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Dan Hou
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Liwen Huang
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Feng Huang
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Huade Zheng
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510640, China; South China Institute of Collaborative Innovation, Dongguan 523808, China
| | - Linhu Ge
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Hongbing Guan
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China.
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The Shc1 adaptor simultaneously balances Stat1 and Stat3 activity to promote breast cancer immune suppression. Nat Commun 2017; 8:14638. [PMID: 28276425 PMCID: PMC5347092 DOI: 10.1038/ncomms14638] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 01/18/2017] [Indexed: 02/07/2023] Open
Abstract
Tyrosine kinase signalling within cancer cells is central to the establishment of an immunosuppressive microenvironment. Although tyrosine kinase inhibitors act, in part, to augment adaptive immunity, the increased heterogeneity and functional redundancy of the tyrosine kinome is a hurdle to achieving durable responses to immunotherapies. We previously identified the Shc1 (ShcA) scaffold, a central regulator of tyrosine kinase signalling, as essential for promoting breast cancer immune suppression. Herein we show that the ShcA pathway simultaneously activates STAT3 immunosuppressive signals and impairs STAT1-driven immune surveillance in breast cancer cells. Impaired Y239/Y240-ShcA phosphorylation selectively reduces STAT3 activation in breast tumours, profoundly sensitizing them to immune checkpoint inhibitors and tumour vaccines. Finally, the ability of diminished tyrosine kinase signalling to initiate STAT1-driven immune surveillance can be overcome by compensatory STAT3 hyperactivation in breast tumours. Our data indicate that inhibition of pY239/240-ShcA-dependent STAT3 signalling may represent an attractive therapeutic strategy to sensitize breast tumours to multiple immunotherapies. Tyrosine kinase signalling in cancer cells promotes immune evasion. Here, the authors show that tyrosine kinases engage scaffold protein Shc1 to promote immunosuppression in breast cancer by simultaneously activating STAT3 immunosuppressive signals and impairing STAT1-driven anti-tumour immune responses.
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35
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WHSC1L1-mediated EGFR mono-methylation enhances the cytoplasmic and nuclear oncogenic activity of EGFR in head and neck cancer. Sci Rep 2017; 7:40664. [PMID: 28102297 PMCID: PMC5244396 DOI: 10.1038/srep40664] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 12/09/2016] [Indexed: 12/18/2022] Open
Abstract
While multiple post-translational modifications have been reported to regulate the function of epidermal growth factor receptor (EGFR), the effect of protein methylation on its function has not been well characterized. In this study, we show that WHSC1L1 mono-methylates lysine 721 in the tyrosine kinase domain of EGFR, and that this methylation leads to enhanced activation of its downstream ERK cascade without EGF stimulation. We also show that EGFR K721 mono-methylation not only affects the function of cytoplasmic EGFR, but also that of nuclear EGFR. WHSC1L1-mediated methylation of EGFR in the nucleus enhanced its interaction with PCNA in squamous cell carcinoma of the head and neck (SCCHN) cells and resulted in enhanced DNA synthesis and cell cycle progression. Overall, our study demonstrates the multifaceted oncogenic function of the protein lysine methyltransferase WHSC1L1 in SCCHN, which is mediated through direct non-histone methylation of the EGFR protein with effects both in its cytoplasmic and nuclear functions.
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Osinalde N, Sanchez-Quiles V, Akimov V, Aloria K, Arizmendi JM, Blagoev B, Kratchmarova I. Characterization of Receptor-Associated Protein Complex Assembly in Interleukin (IL)-2- and IL-15-Activated T-Cell Lines. J Proteome Res 2017; 16:106-121. [PMID: 27463037 DOI: 10.1021/acs.jproteome.6b00233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
It remains a paradox that IL-2 and IL-15 can differentially modulate the immune response using the same signaling receptors. We have previously dissected the phosphotyrosine-driven signaling cascades triggered by both cytokines in Kit225 T-cells, unveiling subtle differences that may contribute to their functional dichotomy. In this study, we aimed to decipher the receptor complex assembly in IL-2- and IL-15-activated T-lymphocytes that is highly orchestrated by site-specific phosphorylation events. Comparing the cytokine-induced interactome of the interleukin receptor beta and gamma subunits shared by the two cytokines, we defined the components of the early IL-2 and IL-15 receptor-associated complex discovering novel constituents. Additionally, phosphopeptide-directed analysis allowed us to detect several cytokine-dependent and -independent phosphorylation events within the activated receptor complex including novel phosphorylated sites located in the cytoplasmic region of IL-2 receptor β subunit (IL-2Rβ). We proved that the distinct phosphorylations induced by the cytokines serve for recruiting different types of effectors to the initial receptor/ligand complex. Overall, our study sheds new light into the initial molecular events triggered by IL-2 and IL-15 and constitutes a further step toward a better understanding of the early signaling aspects of the two closely related cytokines in T-lymphocytes.
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Affiliation(s)
- Nerea Osinalde
- Department of Biochemistry and Molecular Biology, University of Southern Denmark , 5230 Odense M, Denmark
| | - Virginia Sanchez-Quiles
- Department of Biochemistry and Molecular Biology, University of Southern Denmark , 5230 Odense M, Denmark
| | - Vyacheslav Akimov
- Department of Biochemistry and Molecular Biology, University of Southern Denmark , 5230 Odense M, Denmark
| | - Kerman Aloria
- Proteomics Core Facility-SGIKER, University of the Basque Country, UPV/EHU , 48940 Leioa, Spain
| | - Jesus M Arizmendi
- Department of Biochemistry and Molecular Biology, University of the Basque Country, UPV/EHU , 48940 Leioa, Spain
| | - Blagoy Blagoev
- Department of Biochemistry and Molecular Biology, University of Southern Denmark , 5230 Odense M, Denmark
| | - Irina Kratchmarova
- Department of Biochemistry and Molecular Biology, University of Southern Denmark , 5230 Odense M, Denmark
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37
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p66 Shc Couples Mechanical Signals to RhoA through Focal Adhesion Kinase-Dependent Recruitment of p115-RhoGEF and GEF-H1. Mol Cell Biol 2016; 36:2824-2837. [PMID: 27573018 DOI: 10.1128/mcb.00194-16] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 04/20/2016] [Accepted: 08/25/2016] [Indexed: 01/16/2023] Open
Abstract
Tissue cells respond to changes in tensional forces with proliferation or death through the control of RhoA. However, the response coupling mechanisms that link force with RhoA activation are poorly understood. We found that tension applied to fibronectin-coated microbeads caused recruitment of all three isoforms of the Shc adapter (p66Shc, p52Shc, and p46Shc) to adhesion complexes. The Shc PTB domain was necessary and sufficient for this recruitment, and screening studies revealed the direct interactions with the FERM domain of focal adhesion kinase (FAK) that were required for Shc translocation to adhesion complexes. The FAK/p66Shc complex specifically bound and activated the Rho guanyl exchange factors (GEFs) p115-RhoGEF and GEF-H1, leading to tension-induced RhoA activation. In contrast, the FAK/p52Shc complex bound SOS1 but not the Rho GEFs to mediate tension-induced Ras activation. Nuclear translocation and activation of the YAP/TAZ transcription factors on firm substrates required the FAK/p66Shc/Rho GEF complex, and both proliferation on firm substrates and anoikis in suspension required signaling through p66Shc and its associated Rho GEFs. These studies reveal the binary and exclusive assignment of p66Shc and p52Shc to tension-induced Rho or Ras signals, respectively, and suggest an integrated role for the two Shc isoforms in coordinating the cellular response to mechanical stimuli.
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38
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Lee HC, Su MY, Lo HC, Wu CC, Hu JR, Lo DM, Chao TY, Tsai HJ, Dai MS. Cancer metastasis and EGFR signaling is suppressed by amiodarone-induced versican V2. Oncotarget 2016; 6:42976-87. [PMID: 26515726 PMCID: PMC4767485 DOI: 10.18632/oncotarget.5621] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Accepted: 10/09/2015] [Indexed: 01/05/2023] Open
Abstract
Extracellular matrix components play an active role in cancer progression and prognosis. Versican, a large extracellular matrix proteoglycan, can promote cancer metastasis through facilitating cell proliferation, adhesion, migration and angiogenesis. We had previously demonstrated that amiodarone caused ectopic overexpression of similar to versican b (s-vcanb), inhibited EGFR/GSK3β/Snail signaling, and enhanced Cdh5 at the heart field of zebrafish, indicating interference with epithelial-mesenchymal transition (EMT). Since S-vcanb is homologous to mammalian versican V2 isoform, we examined the effects of amiodarone on mammalian tumor proliferation, migration, invasion and metastasis in vitro and in vivo and on EMT signaling pathways. Monolayer wound assays and extracellular matrix transwell invasion assays showed reduced migration and invasion by 15 μM amiodarone treated B16OVA, JC, 4T-1, MDA-MB-231 and MCF-7 tumor cell lines. All cancer cell lines showed reduced metastatic capabilities in vivo after treatment with amiodarone in experimental animals. Western blots revealed that EMT-related transcription factors Snail and Twist were reduced and E-cadherin was enhanced in amiodarone treated cells through an EGFR/ERK/GSK3β-dependent pathway. Immunohistochemistry showed amiodarone lead to increased expression of versican V2 isoform concomitant with reduced versican V1. Our study illustrated the role of versican v2 in EMT modulation and cancer suppression by amiodarone treatment.
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Affiliation(s)
- Hung-Chieh Lee
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan
| | - Mai-Yan Su
- Institute of Molecular and Cellular Biology, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Hao-Chan Lo
- Institute of Molecular and Cellular Biology, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Chin-Chieh Wu
- Hematology/Oncology, Tri-Service General Hospital, National Defense Medical Centre, Taipei, Taiwan
| | - Jia-Rung Hu
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan
| | - Dao-Ming Lo
- Institute of Molecular and Cellular Biology, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Tsu-Yi Chao
- Hematology/Oncology, Shuang-Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - Huai-Jen Tsai
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan
| | - Ming-Shen Dai
- Hematology/Oncology, Tri-Service General Hospital, National Defense Medical Centre, Taipei, Taiwan
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39
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Buetti-Dinh A, O’Hare T, Friedman R. Sensitivity Analysis of the NPM-ALK Signalling Network Reveals Important Pathways for Anaplastic Large Cell Lymphoma Combination Therapy. PLoS One 2016; 11:e0163011. [PMID: 27669408 PMCID: PMC5036789 DOI: 10.1371/journal.pone.0163011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 08/25/2016] [Indexed: 01/01/2023] Open
Abstract
A large subset of anaplastic large cell lymphoma (ALCL) patients harbour a somatic aberration in which anaplastic lymphoma kinase (ALK) is fused to nucleophosmin (NPM) resulting in a constitutively active signalling fusion protein, NPM-ALK. We computationally simulated the signalling network which mediates pathological cell survival and proliferation through NPM-ALK to identify therapeutically targetable nodes through which it may be possible to regain control of the tumourigenic process. The simulations reveal the predominant role of the VAV1-CDC42 (cell division control protein 42) pathway in NPM-ALK-driven cellular proliferation and of the Ras / mitogen-activated ERK kinase (MEK) / extracellular signal-regulated kinase (ERK) cascade in controlling cell survival. Our results also highlight the importance of a group of interleukins together with the Janus kinase 3 (JAK3) / signal transducer and activator of transcription 3 (STAT3) signalling in the development of NPM-ALK derived ALCL. Depending on the activity of JAK3 and STAT3, the system may also be sensitive to activation of protein tyrosine phosphatase-1 (SHP1), which has an inhibitory effect on cell survival and proliferation. The identification of signalling pathways active in tumourigenic processes is of fundamental importance for effective therapies. The prediction of alternative pathways that circumvent classical therapeutic targets opens the way to preventive approaches for countering the emergence of cancer resistance.
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Affiliation(s)
- Antoine Buetti-Dinh
- Department of Chemistry and Biomedical Sciences, Linnæus University, Kalmar, Sweden
- Linnæus University Centre for Biomaterials Chemistry, Linnæus University, Kalmar, Sweden
- Institute of Computational Science, Faculty of Informatics, Università della Svizzera Italiana, Lugano, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
- * E-mail: (ABD); (RF)
| | - Thomas O’Hare
- Huntsman Cancer Institute, The University of Utah, Salt Lake City, United States of America
- Division of Hematology and Hematologic Malignancies, The University of Utah, Salt Lake City, United States of America
| | - Ran Friedman
- Department of Chemistry and Biomedical Sciences, Linnæus University, Kalmar, Sweden
- Linnæus University Centre for Biomaterials Chemistry, Linnæus University, Kalmar, Sweden
- * E-mail: (ABD); (RF)
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40
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Abstract
Within recent years, new cellular, molecular, and genetic techniques have led to an ex plosion of biochemical information about cell growth and regulation. Growth factor recep tor signal transduction and proto-oncogene product function are among the fields that have experienced the most impressive and exciting gains. One important area in which these have merged is in the elucidation of the mechanisms of signal transduction of a class of receptors bearing intrinsic tyrosine kinase activity. The basis of the current "De cade of the Brain" has been the expectation that these powerful techniques and discov eries in cell biology would fuel equally exciting discoveries in the function of the brain and the nervous system in general. The neurotrophins are a class of neurotrophic factors that powerfully shape both the developing and the adult brain. The mechanisms of neuro trophin action via their trk receptors, briefly reviewed in this Update, is one area where the groundwork is likely being established for the futures of neurology and psychiatry. The Neuroscientist 1:3-6, 1995
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41
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Demir IE, Tieftrunk E, Schorn S, Friess H, Ceyhan GO. Nerve growth factor & TrkA as novel therapeutic targets in cancer. Biochim Biophys Acta Rev Cancer 2016; 1866:37-50. [PMID: 27264679 DOI: 10.1016/j.bbcan.2016.05.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/24/2016] [Accepted: 05/28/2016] [Indexed: 12/11/2022]
Abstract
In the past 20years, nerve growth factor (NGF) and its receptors TrkA & p75NTR were recognized to be overexpressed in the overwhelming majority of human solid cancers. Recent studies discovered the presence of overactive TrkA signaling due to TrkA rearrangements or TrkA fusion products in frequent cancers like colorectal cancer, thyroid cancer, or acute myeloid leukemia. Thus, targeting TrkA/NGF via selective small-molecule-inhibitors or antibodies has gained enormous attention in the drug discovery sector. Clinical studies on the anti-cancer impact of NGF-blocking antibodies are likely to be accelerated after the recent removal of clinical holds on these agents by regulatory authorities. Based on these current developments, the present review provides not only a broad overview of the biological effects of NGF-TrkA-p75NTR on cancer cells and their microenvironment, but also explains why NGF and its receptors are going to evoke major interest as promising therapeutic anti-cancer targets in the coming decade.
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Affiliation(s)
- Ihsan Ekin Demir
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
| | - Elke Tieftrunk
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany
| | - Stephan Schorn
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany
| | - Helmut Friess
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany
| | - Güralp O Ceyhan
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany
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42
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Ha JR, Siegel PM, Ursini-Siegel J. The Tyrosine Kinome Dictates Breast Cancer Heterogeneity and Therapeutic Responsiveness. J Cell Biochem 2016; 117:1971-90. [PMID: 27392311 DOI: 10.1002/jcb.25561] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 03/24/2016] [Indexed: 12/13/2022]
Abstract
Phospho-tyrosine signaling networks control numerous biological processes including cellular differentiation, cell growth and survival, motility, and invasion. Aberrant regulation of the tyrosine kinome is a hallmark of malignancy and influences all stages of breast cancer progression, from initiation to the development of metastatic disease. The success of specific tyrosine kinase inhibitors strongly validates the clinical relevance of tyrosine phosphorylation networks in breast cancer pathology. However, a significant degree of redundancy exists within the tyrosine kinome. Numerous receptor and cytoplasmic tyrosine kinases converge on a core set of signaling regulators, including adaptor proteins and tyrosine phosphatases, to amplify pro-tumorigenic signal transduction pathways. Mutational activation, amplification, or overexpression of one or more components of the tyrosine kinome represents key contributing events responsible for the tumor heterogeneity that is observed in breast cancers. It is this molecular heterogeneity that has become the most significant barrier to durable clinical responses due to the development of therapeutic resistance. This review focuses on recent literature that supports a prominent role for specific components of the tyrosine kinome in the emergence of unique breast cancer subtypes and in shaping breast cancer plasticity, sensitivity to targeted therapies, and the eventual emergence of acquired resistance. J. Cell. Biochem. 117: 1971-1990, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Jacqueline R Ha
- Lady Davis Institute for Medical Research, Montreal, Quebec, Canada.,Department of Medicine, McGill University, Montreal, Quebec, Canada.,Department of Oncology, McGill University, Montreal, Quebec, Canada
| | - Peter M Siegel
- Department of Medicine, McGill University, Montreal, Quebec, Canada.,Department of Oncology, McGill University, Montreal, Quebec, Canada.,Goodman Cancer Research Centre, McGill University, Montreal, Quebec, Canada.,Department of Biochemistry, McGill University, Montreal, Quebec, Canada.,Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Josie Ursini-Siegel
- Lady Davis Institute for Medical Research, Montreal, Quebec, Canada.,Department of Medicine, McGill University, Montreal, Quebec, Canada.,Department of Oncology, McGill University, Montreal, Quebec, Canada
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43
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Papaioannou D, Geibel S, Kunze MBA, Kay CWM, Waksman G. Structural and biophysical investigation of the interaction of a mutant Grb2 SH2 domain (W121G) with its cognate phosphopeptide. Protein Sci 2015; 25:627-37. [PMID: 26645482 DOI: 10.1002/pro.2856] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 11/27/2015] [Indexed: 11/11/2022]
Abstract
The adaptor protein Grb2 is a key element of mitogenetically important signaling pathways. With its SH2 domain it binds to upstream targets while its SH3 domains bind to downstream proteins thereby relaying signals from the cell membranes to the nucleus. The Grb2 SH2 domain binds to its targets by recognizing a phosphotyrosine (pY) in a pYxNx peptide motif, requiring an Asn at the +2 position C-terminal to the pY with the residue either side of this Asn being hydrophobic. Structural analysis of the Grb2 SH2 domain in complex with its cognate peptide has shown that the peptide adopts a unique β-turn conformation, unlike the extended conformation that phosphopeptides adopt when bound to other SH2 domains. TrpEF1 (W121) is believed to force the peptide into this unusual conformation conferring this unique specificity to the Grb2 SH2 domain. Using X-ray crystallography, electron paramagnetic resonance (EPR) spectroscopy, and isothermal titration calorimetry (ITC), we describe here a series of experiments that explore the role of TrpEF1 in determining the specificity of the Grb2 SH2 domain. Our results demonstrate that the ligand does not adopt a pre-organized structure before binding to the SH2 domain, rather it is the interaction between the two that imposes the hairpin loop to the peptide. Furthermore, we find that the peptide adopts a similar structure when bound to both the wild-type Grb2 SH2 domain and a TrpEF1Gly mutant. This suggests that TrpEF1 is not the determining factor for the conformation of the phosphopeptide.
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Affiliation(s)
- Danai Papaioannou
- UCL And Birkbeck, Institute of Structural and Molecular Biology, Malet Street, London, WC1E 7HX, United Kingdom
| | - Sebastian Geibel
- UCL And Birkbeck, Institute of Structural and Molecular Biology, Malet Street, London, WC1E 7HX, United Kingdom.,Institute for Molecular Infection Biology, University of Würzburg, Josef-Schneider-Strasse 2, Haus D15, Würzburg, 97080, Germany
| | - Micha B A Kunze
- UCL And Birkbeck, Institute of Structural and Molecular Biology, Malet Street, London, WC1E 7HX, United Kingdom
| | - Christopher W M Kay
- UCL And Birkbeck, Institute of Structural and Molecular Biology, Malet Street, London, WC1E 7HX, United Kingdom.,London Centre for Nanotechnology, 17-19 Gordon Street, London, WC1H 0AH, United Kingdom
| | - Gabriel Waksman
- UCL And Birkbeck, Institute of Structural and Molecular Biology, Malet Street, London, WC1E 7HX, United Kingdom
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44
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Bathina S, Das UN. Brain-derived neurotrophic factor and its clinical implications. Arch Med Sci 2015; 11:1164-78. [PMID: 26788077 PMCID: PMC4697050 DOI: 10.5114/aoms.2015.56342] [Citation(s) in RCA: 612] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 08/05/2014] [Indexed: 01/09/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) plays an important role in neuronal survival and growth, serves as a neurotransmitter modulator, and participates in neuronal plasticity, which is essential for learning and memory. It is widely expressed in the CNS, gut and other tissues. BDNF binds to its high affinity receptor TrkB (tyrosine kinase B) and activates signal transduction cascades (IRS1/2, PI3K, Akt), crucial for CREB and CBP production, that encode proteins involved in β cell survival. BDNF and insulin-like growth factor-1 have similar downstream signaling mechanisms incorporating both p-CAMK and MAPK that increase the expression of pro-survival genes. Brain-derived neurotrophic factor regulates glucose and energy metabolism and prevents exhaustion of β cells. Decreased levels of BDNF are associated with neurodegenerative diseases with neuronal loss, such as Parkinson's disease, Alzheimer's disease, multiple sclerosis and Huntington's disease. Thus, BDNF may be useful in the prevention and management of several diseases including diabetes mellitus.
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Affiliation(s)
- Siresha Bathina
- Bio-Science Research Center, Gayatri Vidya Parishad College of Engineering, Visakhapatnam, India
| | - Undurti N. Das
- Bio-Science Research Center, Gayatri Vidya Parishad College of Engineering, Visakhapatnam, India
- UND Life Sciences, USA
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45
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Impaired Focal Adhesion Kinase-Grb2 Interaction during Elevated Activity in Hippocampal Neurons. Int J Mol Sci 2015; 16:15659-69. [PMID: 26184168 PMCID: PMC4519918 DOI: 10.3390/ijms160715659] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 06/25/2015] [Accepted: 07/07/2015] [Indexed: 11/16/2022] Open
Abstract
Excitatory/inhibitory imbalances are implicated in many neurological disorders. Previously, we showed that chronically elevated network activity induces vulnerability in neurons due to loss of signal transducer and activator of transcription 3 (STAT3) signaling in response to the impairment of the serine/threonine kinase, extracellular-signal-regulated kinases 1/2 (Erk1/2) activation. However, how phosphorylation of Erk1/2 decreases during elevated neuronal activity was unknown. Here I show the pErk1/2 decrease induced by 4-aminopyridine (4-AP), an A-type potassium channel inhibitor can be blocked by a broad-spectrum matrix-metalloproteinase (MMP) inhibitor, FN-439. Surface expression levels of integrin β1 dramatically decrease when neurons are challenged by chronically elevated activity, which is reversed by FN-439. Treatment with 4-AP induces degradation of focal adhesion kinase (FAK), the mediator of integrin signaling. As a result, interactions between FAK and growth factor receptor-bound protein 2 (Grb2), the adaptor protein that mediates Erk1/2 activation by integrin, are severely impaired. Together, these data suggest the loss of integrin signaling during elevated activity causes vulnerability in neurons.
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46
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Ahmed Z, Timsah Z, Suen KM, Cook NP, Lee GR, Lin CC, Gagea M, Marti AA, Ladbury JE. Grb2 monomer-dimer equilibrium determines normal versus oncogenic function. Nat Commun 2015; 6:7354. [PMID: 26103942 PMCID: PMC4491180 DOI: 10.1038/ncomms8354] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Accepted: 04/29/2015] [Indexed: 01/09/2023] Open
Abstract
The adaptor protein growth factor receptor-bound protein 2 (Grb2) is ubiquitously expressed in eukaryotic cells and involved in a multitude of intracellular protein interactions. Grb2 plays a pivotal role in tyrosine kinase-mediated signal transduction including linking receptor tyrosine kinases to the Ras/mitogen-activated protein (MAP) kinase pathway, which is implicated in oncogenic outcome. Grb2 exists in a constitutive equilibrium between monomeric and dimeric states. Here we show that only monomeric Grb2 is capable of binding to SOS and upregulating MAP kinase signalling and that the dimeric state is inhibitory to this process. Phosphorylation of tyrosine 160 (Y160) on Grb2, or binding of a tyrosylphosphate-containing ligand to the SH2 domain of Grb2, results in dimer dissociation. Phosphorylation of Y160 on Grb2 is readily detectable in the malignant forms of human prostate, colon and breast cancers. The self-association/dissociation of Grb2 represents a switch that regulates MAP kinase activity and hence controls cancer progression.
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Affiliation(s)
- Zamal Ahmed
- 1] Department of Biochemistry and Molecular Biology, University of Texas, M.D. Anderson Cancer Center, Unit 1000, 1515 Holcombe Boulevard, Houston, Texas 77030, USA [2] Center for Biomolecular Structure and Function, University of Texas, M.D. Anderson Cancer Center, Unit 1000, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
| | - Zahra Timsah
- 1] Department of Biochemistry and Molecular Biology, University of Texas, M.D. Anderson Cancer Center, Unit 1000, 1515 Holcombe Boulevard, Houston, Texas 77030, USA [2] School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Kin M Suen
- 1] Department of Biochemistry and Molecular Biology, University of Texas, M.D. Anderson Cancer Center, Unit 1000, 1515 Holcombe Boulevard, Houston, Texas 77030, USA [2] School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Nathan P Cook
- Department of Chemistry, Rice University, Houston, Texas 77005, USA
| | - Gilbert R Lee
- Center for Biomolecular Structure and Function, University of Texas, M.D. Anderson Cancer Center, Unit 1000, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
| | - Chi-Chuan Lin
- 1] Department of Biochemistry and Molecular Biology, University of Texas, M.D. Anderson Cancer Center, Unit 1000, 1515 Holcombe Boulevard, Houston, Texas 77030, USA [2] School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Mihai Gagea
- Department of Veterinary Medicine and Surgery, University of Texas, M.D. Anderson Cancer Center, Unit 63, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
| | - Angel A Marti
- Department of Chemistry, Rice University, Houston, Texas 77005, USA
| | - John E Ladbury
- 1] Department of Biochemistry and Molecular Biology, University of Texas, M.D. Anderson Cancer Center, Unit 1000, 1515 Holcombe Boulevard, Houston, Texas 77030, USA [2] Center for Biomolecular Structure and Function, University of Texas, M.D. Anderson Cancer Center, Unit 1000, 1515 Holcombe Boulevard, Houston, Texas 77030, USA [3] School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
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47
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Tsutsui Y, Johnson JM, Demeler B, Kinter MT, Hays FA. Conformation-Dependent Human p52Shc Phosphorylation by Human c-Src. Biochemistry 2015; 54:3469-82. [PMID: 25961473 DOI: 10.1021/acs.biochem.5b00122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Phosphorylation of the human p52Shc adaptor protein is a key determinant in modulating signaling complex assembly in response to tyrosine kinase signaling cascade activation. The underlying mechanisms that govern p52Shc phosphorylation status are unknown. In this study, p52Shc phosphorylation by human c-Src was investigated using purified proteins to define mechanisms that affect the p52Shc phosphorylation state. We conducted biophysical characterizations of both human p52Shc and human c-Src in solution as well as membrane-mimetic environments using the acidic lipid phosphatidylinositol 4-phosphate or a novel amphipathic detergent (2,2-dihexylpropane-1,3-bis-β-D-glucopyranoside). We then identified p52Shc phosphorylation sites under various solution conditions, and the amount of phosphorylation at each identified site was quantified using mass spectrometry. These data demonstrate that the p52Shc phosphorylation level is altered by the solution environment without affecting the fraction of active c-Src. Mass spectrometry analysis of phosphorylated p52Shc implies functional linkage among phosphorylation sites. This linkage may drive preferential coupling to protein binding partners during signaling complex formation, such as during initial binding interactions with the Grb2 adaptor protein leading to activation of the Ras/MAPK signaling cascade. Remarkably, tyrosine residues involved in Grb2 binding were heavily phosphorylated in a membrane-mimetic environment. The increased phosphorylation level in Grb2 binding residues was also correlated with a decrease in the thermal stability of purified human p52Shc. A schematic for the phosphorylation-dependent interaction between p52Shc and Grb2 is proposed. The results of this study suggest another possible therapeutic strategy for altering protein phosphorylation to regulate signaling cascade activation.
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Affiliation(s)
- Yuko Tsutsui
- †Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, United States
| | - Jennifer M Johnson
- †Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, United States
| | - Borries Demeler
- ‡Department of Biochemistry, The University of Texas Health Sciences Center at San Antonio, 7750 Floyd Curl Drive, San Antonio, Texas 78229-3900, United States
| | - Michael T Kinter
- ∥Department of Geriatric Medicine, Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, United States
| | - Franklin A Hays
- †Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, United States.,⊥Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, United States.,∇Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, United States
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Effect of sialylation on EGFR phosphorylation and resistance to tyrosine kinase inhibition. Proc Natl Acad Sci U S A 2015; 112:6955-60. [PMID: 25971727 DOI: 10.1073/pnas.1507329112] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Epidermal growth factor receptor (EGFR) is a heavily glycosylated transmembrane receptor tyrosine kinase. Upon EGF-binding, EGFR undergoes conformational changes to dimerize, resulting in kinase activation and autophosphorylation and downstream signaling. Tyrosine kinase inhibitors (TKIs) have been used to treat lung cancer by inhibiting EGFR phosphorylation. Previously, we demonstrated that EGFR sialylation suppresses its dimerization and phosphorylation. In this report, we further investigated the effect of sialylation on the phosphorylation profile of EGFR in TKI-sensitive and TKI-resistant cells. Sialylation was induced in cancer progression to inhibit the association of EGFR with EGF and the subsequent autophosphorylation. In the absence of EGF the TKI-resistant EGFR mutant (L858R/T790M) had a higher degree of sialylation and phosphorylation at Y1068, Y1086, and Y1173 than the TKI-sensitive EGFR. In addition, although sialylation in the TKI-resistant mutants suppresses EGFR tyrosine phosphorylation, with the most significant effect on the Y1173 site, the sialylation effect is not strong enough to stop cancer progression by inhibiting the phosphorylation of these three sites. These findings were supported further by the observation that the L858R/T790M EGFR mutant, when treated with sialidase or sialyltransferase inhibitor, showed an increase in tyrosine phosphorylation, and the sensitivity of the corresponding resistant lung cancer cells to gefitinib was reduced by desialylation and was enhanced by sialylation.
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Bhat SS, Anand D, Khanday FA. p66Shc as a switch in bringing about contrasting responses in cell growth: implications on cell proliferation and apoptosis. Mol Cancer 2015; 14:76. [PMID: 25890053 PMCID: PMC4421994 DOI: 10.1186/s12943-015-0354-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 03/29/2015] [Indexed: 01/19/2023] Open
Abstract
p66Shc, a member of the ShcA (Src homologous- collagen homologue) adaptor protein family, is one of the three isoforms of this family along with p46Shc and p52Shc. p66Shc, a 66 kDa protein is different from the other isoforms of the ShcA family. p66Shc is the longest isoform of the ShcA family. p66Shc has an additional CH domain at the N-terminal, called the CH2 domain, which is not not present in the other isoforms. This CH2 domain contains a very crucial S36 residue which is phosphorylated in response to oxidative stress and plays a role in apoptosis. Whereas p52Shc and p46Shc are ubiquitously expressed, p66Shc shows constrained expression. This adaptor protein has been shown to be involved in mediating and executing the post effects of oxidative stress and increasing body of evidence is pinpointing to its role in carcinogenesis as well. It shows proto-oncogenic as well as pro-apoptotic properties. This multitasking protein is involved in regulating different networks of cell signaling. On one hand it shows an increased expression profile in different cancers, has a positive role in cell proliferation and migration, whereas on the other hand it promotes apoptosis under oxidative stress conditions by acting as a sensor of ROS (Reactive Oxygen Species). This paradoxical role of p66Shc could be attributed to its involvement in ROS production, as ROS is known to both induce cell proliferation as well as apoptosis. p66Shc by regulating intracellular ROS levels plays a crucial role in regulating longevity and cell senescence. These multi-faceted properties of p66Shc make it a perfect candidate protein for further studies in various cancers and aging related diseases. p66Shc can be targeted in terms of it being used as a possible therapeutic target in various diseases. This review focuses on p66Shc and highlights its role in promoting apoptosis via different cell signaling networks, its role in cell proliferation, along with its presence and role in different forms of cancers.
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Affiliation(s)
- Sahar S Bhat
- Department Of Biotechnology, University of Kashmir, Srinagar, 190006, Kashmir, India.
| | - Deepak Anand
- Department of Life Sciences, King Fahad University of Petroleum and Minerals, Bld: 7, Room: 129, Dhahran, 31261, Kingdom of Saudi Arabia.
| | - Firdous A Khanday
- Department of Life Sciences, King Fahad University of Petroleum and Minerals, Bld: 7, Room: 129, Dhahran, 31261, Kingdom of Saudi Arabia.
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Wuertenberger S, Groemping Y. A single PXXP motif in the C-terminal region of srGAP3 mediates binding to multiple SH3 domains. FEBS Lett 2015; 589:1156-63. [PMID: 25819436 DOI: 10.1016/j.febslet.2015.03.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/18/2015] [Accepted: 03/18/2015] [Indexed: 11/17/2022]
Abstract
The Slit-Robo GTPase-activating protein 3 (srGAP3) has been implicated in different critical aspects of neuronal development. These findings have mainly been based on the characterisation of the three conserved globular N-terminal domains, while the function of the C-terminal region (CTR) is still unknown. We show that this predicted unstructured region acts as an adaptor by binding to the endocytic proteins Amphiphysin, Endophilin-A2, Endophilin-A1, as well as the Ras signalling protein Grb2. All these interactions depend on a single proline-rich motif in the CTR and the Src-homology 3 domains of the binding partners. Via these interactions srGAP3 could link receptor signalling events to the endocytic machinery.
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Affiliation(s)
- Silvia Wuertenberger
- Max Planck Institute for Developmental Biology, Department of Protein Evolution, Spemannstr. 35, D-72076 Tübingen, Germany
| | - Yvonne Groemping
- Max Planck Institute for Developmental Biology, Department of Protein Evolution, Spemannstr. 35, D-72076 Tübingen, Germany.
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