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Wang D, Liu G, Meng Y, Chen H, Ye Z, Jing J. The Configuration of GRB2 in Protein Interaction and Signal Transduction. Biomolecules 2024; 14:259. [PMID: 38540680 PMCID: PMC10968029 DOI: 10.3390/biom14030259] [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: 01/26/2024] [Revised: 02/15/2024] [Accepted: 02/17/2024] [Indexed: 07/02/2024] Open
Abstract
Growth-factor-receptor-binding protein 2 (GRB2) is a non-enzymatic adaptor protein that plays a pivotal role in precisely regulated signaling cascades from cell surface receptors to cellular responses, including signaling transduction and gene expression. GRB2 binds to numerous target molecules, thereby modulating a complex cell signaling network with diverse functions. The structural characteristics of GRB2 are essential for its functionality, as its multiple domains and interaction mechanisms underpin its role in cellular biology. The typical signaling pathway involving GRB2 is initiated by the ligand stimulation to its receptor tyrosine kinases (RTKs). The activation of RTKs leads to the recruitment of GRB2 through its SH2 domain to the phosphorylated tyrosine residues on the receptor. GRB2, in turn, binds to the Son of Sevenless (SOS) protein through its SH3 domain. This binding facilitates the activation of Ras, a small GTPase, which triggers a cascade of downstream signaling events, ultimately leading to cell proliferation, survival, and differentiation. Further research and exploration into the structure and function of GRB2 hold great potential for providing novel insights and strategies to enhance medical approaches for related diseases. In this review, we provide an outline of the proteins that engage with domains of GRB2, along with the function of different GRB2 domains in governing cellular signaling pathways. This furnishes essential points of current studies for the forthcoming advancement of therapeutic medications aimed at GRB2.
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Affiliation(s)
- Dingyi Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
- Hangzhou Institute of Medicine, Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou 310022, China
| | - Guoxia Liu
- Hangzhou Institute of Medicine, Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou 310022, China
- School of Life Science, Tianjin University, Tianjin 200072, China
| | - Yuxin Meng
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
- Hangzhou Institute of Medicine, Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou 310022, China
| | - Hongjie Chen
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
- Hangzhou Institute of Medicine, Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou 310022, China
| | - Zu Ye
- Hangzhou Institute of Medicine, Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou 310022, China
- Zhejiang Key Laboratory of Prevention, Diagnosis and Therapy of Upper Gastrointestinal Cancer, Hangzhou 310022, China
| | - Ji Jing
- Hangzhou Institute of Medicine, Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou 310022, China
- Zhejiang Key Laboratory of Prevention, Diagnosis and Therapy of Upper Gastrointestinal Cancer, Hangzhou 310022, China
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2
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Chen Y, Zhou D, Yao Y, Sun Y, Yao F, Ma L. Monoubiquitination in Homeostasis and Cancer. Int J Mol Sci 2022; 23:ijms23115925. [PMID: 35682605 PMCID: PMC9180643 DOI: 10.3390/ijms23115925] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/17/2022] [Accepted: 05/20/2022] [Indexed: 02/06/2023] Open
Abstract
Monoubiquitination is a post-translational modification (PTM), through which a single ubiquitin molecule is covalently conjugated to a lysine residue of the target protein. Monoubiquitination regulates the activity, subcellular localization, protein-protein interactions, or endocytosis of the substrate. In doing so, monoubiquitination is implicated in diverse cellular processes, including gene transcription, endocytosis, signal transduction, cell death, and DNA damage repair, which in turn regulate cell-cycle progression, survival, proliferation, and stress response. In this review, we summarize the functions of monoubiquitination and discuss how this PTM modulates homeostasis and cancer.
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Affiliation(s)
- Yujie Chen
- Hubei Hongshan Laboratory, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China; (Y.C.); (D.Z.); (Y.Y.)
| | - Dandan Zhou
- Hubei Hongshan Laboratory, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China; (Y.C.); (D.Z.); (Y.Y.)
| | - Yinan Yao
- Hubei Hongshan Laboratory, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China; (Y.C.); (D.Z.); (Y.Y.)
| | - Yutong Sun
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | - Fan Yao
- Hubei Hongshan Laboratory, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China; (Y.C.); (D.Z.); (Y.Y.)
- Hubei Clinical Research Center for Precise Diagnosis and Treatment of Liver Cancer, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
- Correspondence: (F.Y.); (L.M.)
| | - Li Ma
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- The University of Texas MD Anderson UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
- Correspondence: (F.Y.); (L.M.)
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Akimov V, Fehling-Kaschek M, Barrio-Hernandez I, Puglia M, Bunkenborg J, Nielsen MM, Timmer J, Dengjel J, Blagoev B. Magnitude of Ubiquitination Determines the Fate of Epidermal Growth Factor Receptor Upon Ligand Stimulation. J Mol Biol 2021; 433:167240. [PMID: 34508725 DOI: 10.1016/j.jmb.2021.167240] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 08/17/2021] [Accepted: 09/01/2021] [Indexed: 12/23/2022]
Abstract
Receptor tyrosine kinases (RTK) bind growth factors and are critical for cell proliferation and differentiation. Their dysregulation leads to a loss of growth control, often resulting in cancer. Epidermal growth factor receptor (EGFR) is the prototypic RTK and can bind several ligands exhibiting distinct mitogenic potentials. Whereas the phosphorylation on individual EGFR sites and their roles for downstream signaling have been extensively studied, less is known about ligand-specific ubiquitination events on EGFR, which are crucial for signal attenuation and termination. We used a proteomics-based workflow for absolute quantitation combined with mathematical modeling to unveil potentially decisive ubiquitination events on EGFR from the first 30 seconds to 15 minutes of stimulation. Four ligands were used for stimulation: epidermal growth factor (EGF), heparin-binding-EGF like growth factor, transforming growth factor-α and epiregulin. Whereas only little differences in the order of individual ubiquitination sites were observed, the overall amount of modified receptor differed depending on the used ligand, indicating that absolute magnitude of EGFR ubiquitination, and not distinctly regulated ubiquitination sites, is a major determinant for signal attenuation and the subsequent cellular outcomes.
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Affiliation(s)
- Vyacheslav Akimov
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Mirjam Fehling-Kaschek
- Institut of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Inigo Barrio-Hernandez
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Michele Puglia
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Jakob Bunkenborg
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Mogens M Nielsen
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Jens Timmer
- Institut of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany; Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Schänzlestr. 18, 79104 Freiburg, Germany
| | - Jörn Dengjel
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland.
| | - Blagoy Blagoev
- Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
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Gudi R, Palanisamy V, Vasu C. Centrosomal P4.1-associated protein (CPAP) positively regulates endocytic vesicular transport and lysosome targeting of EGFR. Sci Rep 2021; 11:12689. [PMID: 34135376 PMCID: PMC8209166 DOI: 10.1038/s41598-021-91818-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 06/01/2021] [Indexed: 11/09/2022] Open
Abstract
Centrosomal P4.1-associated protein (CPAP) plays a critical role in restricting the centriole length in human cells. Here, we report a novel, positive regulatory influence for CPAP on endocytic vesicular transport (EVT) and lysosome targeting of internalized-cell surface receptor EGFR. We observed that higher CPAP levels cause an increase in the abundance of multi-vesicular body (MVB) and EGFR is detectable in CPAP-overexpression induced puncta. The surface and cellular levels of EGFR are higher under CPAP deficiency and lower under CPAP overexpression. While ligand-engagement induced internalization or routing of EGFR into early endosomes is not influenced by cellular levels of CPAP, we found that targeting of ligand-activated, internalized EGFR to lysosome is impacted by CPAP levels. Transport of ligand-bound EGFR from early endosome to late endosome/MVB and lysosome is diminished in CPAP-depleted cells. Moreover, CPAP depleted cells appear to show a diminished ability to form MVB structures upon EGFR activation. These observations suggest a positive regulatory effect of CPAP on EVT of ligand-bound EGFR-like cell surface receptors to MVB and lysosome. Overall, identification of a non-centriolar function of CPAP in endocytic trafficking provides new insights in understanding the non-canonical cellular functions of CPAP.
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Affiliation(s)
- Radhika Gudi
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, 29425, USA.
| | - Viswanathan Palanisamy
- Department of Biochemistry, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Chenthamarakshan Vasu
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, 29425, USA.
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Morato A, Martignani E, Miretti S, Baratta M, Accornero P. External and internal EGFR-activating signals drive mammary epithelial cells proliferation and viability. Mol Cell Endocrinol 2021; 520:111081. [PMID: 33181234 DOI: 10.1016/j.mce.2020.111081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 10/20/2020] [Accepted: 11/09/2020] [Indexed: 12/24/2022]
Abstract
During puberty, the mammary gland undergoes an intense growth, dependent on the interplay between the Epidermal Growth Factor Receptor (EGFR) in the stroma and different mammary epithelial receptors. We hypothesize that EGFR expressed in the mammary epithelium also has a role in puberty and the epithelial cells can self-sustain by EGFR-mediated autocrine signaling. We adopted mammary cell lines from different species, as in vitro model for the epithelium, and we observed that EGFR-signaling positively affects their survival and proliferation. Once deprived of external growth factors, mammary cells still showed strong Erk 1/2 phosphorylation, abolished upon EGFR inhibition, coupled with a further reduction in survival and proliferation. Based on gene expression analysis, three EGFR-ligands (AREG, EREG and HBEGF) are likely to mediate this autocrine signaling. In conclusion, internal EGFR-activating signals sustain mammary epithelial cell proliferation and survival in vitro.
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Affiliation(s)
- Alessia Morato
- Department of Veterinary Sciences, University of Turin, Grugliasco, TO, Italy
| | - Eugenio Martignani
- Department of Veterinary Sciences, University of Turin, Grugliasco, TO, Italy
| | - Silvia Miretti
- Department of Veterinary Sciences, University of Turin, Grugliasco, TO, Italy
| | - Mario Baratta
- Department of Veterinary Sciences, University of Turin, Grugliasco, TO, Italy
| | - Paolo Accornero
- Department of Veterinary Sciences, University of Turin, Grugliasco, TO, Italy.
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Roles for receptor tyrosine kinases in tumor progression and implications for cancer treatment. Adv Cancer Res 2020; 147:1-57. [PMID: 32593398 DOI: 10.1016/bs.acr.2020.04.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Growth factors and their receptor tyrosine kinases (RTKs), a group of transmembrane molecules harboring cytoplasm-facing tyrosine-specific kinase functions, play essential roles in migration of multipotent cell populations and rapid proliferation of stem cells' descendants, transit amplifying cells, during embryogenesis and tissue repair. These intrinsic functions are aberrantly harnessed when cancer cells undergo intertwined phases of cell migration and proliferation during cancer progression. For example, by means of clonal expansion growth factors fixate the rarely occurring driver mutations, which initiate tumors. Likewise, autocrine and stromal growth factors propel angiogenesis and penetration into the newly sprouted vessels, which enable seeding micro-metastases at distant organs. We review genetic and other mechanisms that preempt ligand-mediated activation of RTKs, thereby supporting sustained cancer progression. The widespread occurrence of aberrant RTKs and downstream signaling pathways in cancer, identifies molecular targets suitable for pharmacological intervention. We list all clinically approved cancer drugs that specifically intercept oncogenic RTKs. These are mainly tyrosine kinase inhibitors and monoclonal antibodies, which can inhibit cancer but inevitably become progressively less effective due to adaptive rewiring processes or emergence of new mutations, processes we overview. Similarly important are patient treatments making use of radiation, chemotherapeutic agents and immune checkpoint inhibitors. The many interfaces linking RTK-targeted therapies and these systemic or local regimens are described in details because of the great promise offered by combining pharmacological modalities.
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Effect of Ephedra Herb on Erlotinib Resistance in c-Met-Overexpressing Non-Small-Cell Lung Cancer Cell Line, H1993, through Promotion of Endocytosis and Degradation of c-Met. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020. [DOI: 10.1155/2020/7184129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (EGFR-TKIs) are used to treat non-small-cell lung cancer (NSCLC), harboring an EGFR-activating mutation. However, acquired resistance to these treatments emerges after a few years. One of causes of resistance to EGFR-TKIs is a high level of c-Met amplification or c-Met protein overexpression/hyperactivation. Therefore, combination therapy with EGFR-TKIs and a c-Met inhibitor is thought to be effective treatment for patients with NSCLC resistance carrying c-Met amplification and/or protein hyperactivation. Ephedra Herb is a crude drug and is used in Japan as a component in many Kampo formulae. We previously reported that Ephedra Herb extract (EHE) inhibits HGF-induced phosphorylation of c-Met by preventing c-Met tyrosine kinase activity. Thus, we investigated the combination effect of EHE and erlotinib, an EGFR-TKI, on growth of H1993 cells, an erlotinib-resistant NSCLC cell line with overexpression of c-Met. The EHE and erlotinib combination proved to be effective in suppression of the growth of H1993 xenograft tumors and on inhibition of proliferation of H1993 cells, suggesting that EHE is effective in rescuing NSCLC cells from erlotinib resistance. Moreover, EHE not only inhibited the phosphorylation of c-Met, but also downregulated the expression of c-Met by facilitating clathrin-mediated endocytosis and lysosomal degradation of c-Met. EHE also promoted downregulation of the expression of EGFR and phosphorylation of EGFR. Ephedrine alkaloids-free Ephedra Herb extract (EFE) had the same effects as EHE, and the 40% MeOH fraction from EFE, which mainly contained the high-molecular mass condensed tannins, decreased the expression levels of c-Met, pMet, EGFR, and pEGFR to almost the same level as EFE. These results suggest that recovery from resistance to erlotinib by EHE is derived from the high-molecular mass condensed tannins and that EHE may be suitable for treatment of c-Met-overexpressing NSCLC with resistance to EGFR-TKIs.
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Maleki F, Sadeghifard N, Sedighian H, Bakhtiyari S, Hosseini HM, Fooladi AAI. TGFαL3-SEB fusion protein as an anticancer against ovarian cancer. Eur J Pharmacol 2020; 870:172919. [DOI: 10.1016/j.ejphar.2020.172919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 12/23/2019] [Accepted: 01/09/2020] [Indexed: 01/22/2023]
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Jang SI, Fang S, Baek YY, Lee DH, Na K, Lee SY, Lee DK. Local Delivery of Gemcitabine Inhibits Pancreatic and Cholangiocarcinoma Tumor Growth by Promoting Epidermal Growth Factor Receptor Degradation. Int J Mol Sci 2020; 21:ijms21051605. [PMID: 32111094 PMCID: PMC7084314 DOI: 10.3390/ijms21051605] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 02/22/2020] [Accepted: 02/24/2020] [Indexed: 12/14/2022] Open
Abstract
Gemcitabine is clinically used to treat certain types of cancers, including pancreatic and biliary cancer. We investigated the signal transduction pathways underlying the local antitumor effects of gemcitabine-eluting membranes (GEMs) implanted in pancreatic/biliary tumor-bearing nude mice. Here, we report that GEMs increased the E3 ubiquitin ligase c-CBL protein level, leading to degradation of epidermal growth factor receptor (EGFR) in SCK and PANC-1 cells. GEMs decreased the RAS and PI3K protein levels, leading to a reduction in the protein levels of active forms of downstream signaling molecules, including PDK, AKT, and GSK3β. GEM reduced proliferation of cancer cells by upregulating cell cycle arrest proteins, particularly p53 and p21, and downregulating cyclin D1 and cyclin B. Moreover, GEMs reduced the levels of proangiogenic factors, including VEGF, VEGFR2, CD31, and HIF-1α, and inhibited tumor cell migration and invasion by inducing the expression of E-cadherin and reducing that of N-cadherin, snail, and vimentin. We demonstrated that local delivery of gemcitabine using GEM implants inhibited tumor cell growth by promoting c-CBL-mediated degradation of EGFR and inhibiting the proliferation, angiogenesis, and epithelial–mesenchymal transition of pancreatic/biliary tumors. Use of gemcitabine-eluting stents can improve stent patency by inhibiting the ingrowth of malignant biliary obstructions.
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Affiliation(s)
- Sung Ill Jang
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Korea; (S.I.J.); (Y.-Y.B.); (S.Y.L.)
| | - Sungsoon Fang
- Severance Biomedical Science Institute, BK21 Plus Project for Medical Science, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Korea;
| | - Yi-Yong Baek
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Korea; (S.I.J.); (Y.-Y.B.); (S.Y.L.)
| | - Don Haeng Lee
- Department of Internal Medicine, Inha University Hospital, Inha University College of Medicine, Incheon 22212, Korea;
- Utah-Inha DDS & Advanced Therapeutics Research Center, Incheon 22212, Korea
| | - Kun Na
- Department of Biotechnology, The Catholic University of Korea, Bucheon-si 14662, Korea;
| | - Su Yeon Lee
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Korea; (S.I.J.); (Y.-Y.B.); (S.Y.L.)
| | - Dong Ki Lee
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Korea; (S.I.J.); (Y.-Y.B.); (S.Y.L.)
- Correspondence: ; Tel.: +82-2-2019-3214; Fax: +82-2-3463-3882
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Chin TM, Boopathy GTK, Man EP, Clohessy JG, Csizmadia E, Quinlan MP, Putti T, Wan SC, Xie C, Ali A, Wai FC, Ong YS, Goh BC, Settleman J, Hong W, Levantini E, Tenen DG. Targeting microtubules sensitizes drug resistant lung cancer cells to lysosomal pathway inhibitors. Am J Cancer Res 2020; 10:2727-2743. [PMID: 32194831 PMCID: PMC7052910 DOI: 10.7150/thno.38729] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 11/24/2019] [Indexed: 12/20/2022] Open
Abstract
Oncogene-addicted cancers are predominantly driven by specific oncogenic pathways and display initial exquisite sensitivity to designer therapies, but eventually become refractory to treatments. Clear understanding of lung tumorigenic mechanisms is essential for improved therapies. Methods: Lysosomes were analyzed in EGFR-WT and mutant cells and corresponding patient samples using immunofluorescence or immunohistochemistry and immunoblotting. Microtubule organization and dynamics were studied using immunofluorescence analyses. Also, we have validated our findings in a transgenic mouse model that contain EGFR-TKI resistant mutations. Results: We herein describe a novel mechanism that a mutated kinase disrupts the microtubule organization and results in a defective endosomal/lysosomal pathway. This prevents the efficient degradation of phosphorylated proteins that become trapped within the endosomes and continue to signal, therefore amplifying downstream proliferative and survival pathways. Phenotypically, a distinctive subcellular appearance of LAMP1 secondary to microtubule dysfunction in cells expressing EGFR kinase mutants is seen, and this may have potential diagnostic applications for the detection of such mutants. We demonstrate that lysosomal-inhibitors re-sensitize resistant cells to EGFR tyrosine-kinase inhibitors (TKIs). Identifying the endosome-lysosome pathway and microtubule dysfunction as a mechanism of resistance allows to pharmacologically intervene on this pathway. Conclusions: We find that the combination of microtubule stabilizing agent and lysosome inhibitor could reduce the tumor progression in EGFR TKI resistant mouse models of lung cancer.
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Fan Q, Wang Q, Cai R, Yuan H, Xu M. The ubiquitin system: orchestrating cellular signals in non-small-cell lung cancer. Cell Mol Biol Lett 2020; 25:1. [PMID: 31988639 PMCID: PMC6966813 DOI: 10.1186/s11658-019-0193-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 11/25/2019] [Indexed: 02/07/2023] Open
Abstract
The ubiquitin system, known as a common feature in eukaryotes, participates in multiple cellular processes, such as signal transduction, cell-cycle progression, receptor trafficking and endocytosis, and even the immune response. In lung cancer, evidence has revealed that aberrant events in ubiquitin-mediated processes can cause a variety of pathological outcomes including tumorigenesis and metastasis. Likewise, ubiquitination on the core components contributing to the activity of cell signaling controls bio-signal turnover and cell final destination. Given this, inhibitors targeting the ubiquitin system have been developed for lung cancer therapies and have shown great prospects for clinical application. However, the exact biological effects and physiological role of the drugs used in lung cancer therapies are still not clearly elucidated, which might seriously impede the progress of treatment. In this work, we summarize current research advances in cell signal regulation processes mediated through the ubiquitin system during the development of lung cancer, with the hope of improving the therapeutic effects by means of aiming at efficient targets.
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Affiliation(s)
- Qiang Fan
- 1Department of Oncology, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, 280 Mohe Road, Shanghai, China.,2Department of General Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, 280 Mohe Road, Shanghai, China
| | - Qian Wang
- 1Department of Oncology, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, 280 Mohe Road, Shanghai, China
| | - Renjie Cai
- 1Department of Oncology, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, 280 Mohe Road, Shanghai, China.,2Department of General Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, 280 Mohe Road, Shanghai, China
| | - Haihua Yuan
- 1Department of Oncology, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, 280 Mohe Road, Shanghai, China
| | - Ming Xu
- 1Department of Oncology, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, 280 Mohe Road, Shanghai, China
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12
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Lee CA, Blackstone C. ER morphology and endo-lysosomal crosstalk: Functions and disease implications. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1865:158544. [PMID: 31678515 DOI: 10.1016/j.bbalip.2019.158544] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/13/2019] [Accepted: 09/16/2019] [Indexed: 02/03/2023]
Abstract
The endoplasmic reticulum (ER) is a continuous endomembrane system comprising the nuclear envelope, ribosome-studded sheets, dense peripheral matrices, and an extensive polygonal network of interconnected tubules. In addition to performing numerous critical cellular functions, the ER makes extensive contacts with other organelles, including endosomes and lysosomes. The molecular and functional characterization of these contacts has advanced significantly over the past several years. These contacts participate in key functions such as cholesterol transfer, endosome tubule fission, and Ca2+ exchange. Disruption of key proteins at these sites can result in often severe diseases, particularly those affecting the nervous system.
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Affiliation(s)
- Crystal A Lee
- Cell Biology Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Craig Blackstone
- Cell Biology Section, Neurogenetics Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA.
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13
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Merarchi M, Jung YY, Fan L, Sethi G, Ahn KS. A Brief Overview of the Antitumoral Actions of Leelamine. Biomedicines 2019; 7:biomedicines7030053. [PMID: 31330969 PMCID: PMC6783843 DOI: 10.3390/biomedicines7030053] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/09/2019] [Accepted: 07/15/2019] [Indexed: 12/27/2022] Open
Abstract
For the last couple of decades, natural products, either applied singly or in conjunction with other cancer therapies including chemotherapy and radiotherapy, have allowed us to combat different types of human cancers through the inhibition of their initiation and progression. The principal sources of these useful compounds are isolated from plants that were described in traditional medicines for their curative potential. Leelamine, derived from the bark of pine trees, was previously reported as having a weak agonistic effect on cannabinoid receptors and limited inhibitory effects on pyruvate dehydrogenase kinases (PDKs). It has been reported to possess a strong lysosomotropic property; this feature enables its assembly inside the acidic compartments within a cell, such as lysosomes, which may eventually hinder endocytosis. In this review, we briefly highlight the varied antineoplastic actions of leelamine that have found implications in pharmacological research, and the numerous intracellular targets affected by this agent that can effectively negate the oncogenic process.
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Affiliation(s)
- Myriam Merarchi
- Faculty of Pharmacy, University of Paris Descartes, 75006 Paris, France
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore
| | - Young Yun Jung
- College of Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea
| | - Lu Fan
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore.
| | - Kwang Seok Ahn
- College of Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
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Choucry AM, Al-Shorbagy MY, Attia AS, El-Abhar HS. Pharmacological Manipulation of Trk, p75NTR, and NGF Balance Restores Memory Deficit in Global Ischemia/Reperfusion Model in Rats. J Mol Neurosci 2019; 68:78-90. [PMID: 30863991 DOI: 10.1007/s12031-019-01284-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 02/21/2019] [Indexed: 01/17/2023]
Abstract
Long-term memory impairment is reported in more than 50% of cardiac arrest survivors. Monosialoganglioside (GM1) provided neuroprotection in experimental models of stroke but failed to replicate its promise clinically for unknown reasons. GM1 stimulates the release of nerve growth factor (NGF), which is synthesized as a precursor protein (pro-NGF) that either mediates apoptosis through the p75 neurotrophin receptor (p75NTR) or is cleaved by the protease furin (FUR) to yield mature NGF, the latter supporting survival through tropomyosin kinase receptor (Trk). The flavanol epicatechin (EPI) inhibits p75NTR-mediated signaling and apoptosis by pro-NGF. The aim of the current work is to test whether these two drugs affect, or communicate with, each other in the setting of CNS injuries. Using the two-vessel occlusion model of global ischemia/reperfusion (I/R), we tested if pharmacological modulation of Trk, p75NTR, and NGF balance with GM1, EPI, and their combination, can correct the memory deficit that follows this insult. Finally, we tested if FUR insufficiency and/or p75NTR-mediated apoptosis negatively affect the neurotherapeutic effect of GM1. Key proteins for Trk and p75NTR, FUR, and both forms of NGF were assessed. All treatment regiments successfully improved spatial memory retention and acquisition. A week after the insult, most Trk and p75NTR proteins were normal, but pro/mature NGF ratio remained sharply elevated and was associated with the poorest memory performance. Pharmacological correction of this balance was achieved by reinforcing Trk and p75NTR signaling. GM1 increased FUR levels, while concomitant administration of EPI weakened GM1 effect on pro-survival Trk and p75NTR mediators. GM1 neuroprotection is therefore not limited by FUR but could be dependent on p75NTR. Graphical Abstract "."
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Affiliation(s)
- Ali Mohamed Choucry
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr El Aini st., Cairo, 11562, Egypt.,Department of Biochemistry, Graduate School of Medicine and Pharmaceutical Sciences, Toyama University, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Muhammad Yusuf Al-Shorbagy
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr El Aini st., Cairo, 11562, Egypt. .,School of Pharmacy, New Giza University, Giza, Egypt.
| | - Ahmed Sherif Attia
- Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Kasr El Aini St., Cairo, 11562, Egypt
| | - Hanan Salah El-Abhar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr El Aini st., Cairo, 11562, Egypt
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15
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Maleki F, Sadeghifard N, Hosseini HM, Bakhtiyari S, Goleij Z, Behzadi E, Sedighian H, Imani Fooladi AA. Growth-inhibitory effects of TGFαL3-SEB chimeric protein on colon cancer cell line. Biomed Pharmacother 2018; 110:190-196. [PMID: 30471512 DOI: 10.1016/j.biopha.2018.11.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/04/2018] [Accepted: 11/06/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND TGFαL3-SEB chimeric protein is a synthetic protein, which is produced by combining the third loop (L3) of transforming growth factor-α (TGF-α) with staphylococcal enterotoxin type B. To the best of our knowledge, anti-cancer activity of this chimeric protein against colon cancer that overexpresses epidermal growth factor receptor (EGFR) has not yet been studied. Thus, in the present study, the anti-tumor effects of TGFαL3-SEB chimeric protein on HT-29 colon cancer cells were evaluated. MATERIALS AND METHODS The TGFαL3-SEB chimeric protein was previously designed and cloned in Escherichia coli (E. coli) [1,2]. The level of expression and the purity of this novel protein were examined for further analysis. For this purpose, the cells were treated with different concentrations (25, 50 and 75 μg/ml) of TGFαL3-SEB and then the proliferation was detected using the MTT assay. The apoptosis-inducing potential of TGFαL3-SEB in HT-29 and HEK-293 cells was evaluated by flow cytometry using Annexin V/PI double staining method; in addition, bax/bcl2 mRNA ratio, caspase-3 and caspase-9 activity were also assessed. RESULTS In the present study, TGFαL3-SEB chimeric protein was produced in E. coli. After effective purification, its growth inhibitory effect was evaluated. Our results indicated that the incubation of HT-29 colon cancer cell with 25, 50 and 75 μg/ml of TGFαL3-SEB for 24 h leads to significant reduction of proliferation in a dose-dependent manner (P < 0.05). Further analysis indicated that exposure of EGFR expressing HT-29 cells to TGFαL3-SEB leads to significant increase of the caspase-3 and caspase-9 activity in a concentration-dependent manner (P < 0.05). Bax/bcl-2 ratio also confirmed that TGFαL3-SEB has the pro-apoptotic effect. Flow cytometry analysis of TGFαL3-SEB treated cells showed that in addition to apoptotic cells, necrotic cells were also increased significantly at the concentration of 25, 50 and 75 μg/ml (P < 0.05). CONCLUSION In conclusion, our results demonstrated that TGFαL3-SEB chimeric protein induced cell death through both mechanisms of apoptosis and necrosis in HT-29 colon cancer cells. This paper has highlighted that TGFαL3-SEB has the potential to target EGFR expressing cancer cell.
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Affiliation(s)
- Farajolah Maleki
- Clinical Microbiology Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Noorkhoda Sadeghifard
- Clinical Microbiology Research Center, Ilam University of Medical Sciences, Ilam, Iran.
| | - Hamideh Mahmoodzadeh Hosseini
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Salar Bakhtiyari
- Department of Clinical Biochemistry, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Zoleikha Goleij
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Elham Behzadi
- Department of Microbiology, College of Basic Sciences, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran
| | - Hamid Sedighian
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Abbas Ali Imani Fooladi
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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16
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Endogenous Membrane Receptor Labeling by Reactive Cytokines and Growth Factors to Chase Their Dynamics in Live Cells. Chem 2018. [DOI: 10.1016/j.chempr.2018.03.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Gowda R, Inamdar GS, Kuzu O, Dinavahi SS, Krzeminski J, Battu MB, Voleti SR, Amin S, Robertson GP. Identifying the structure-activity relationship of leelamine necessary for inhibiting intracellular cholesterol transport. Oncotarget 2018; 8:28260-28277. [PMID: 28423677 PMCID: PMC5438648 DOI: 10.18632/oncotarget.16002] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 02/23/2017] [Indexed: 11/25/2022] Open
Abstract
Leelamine is an anticancer chemotherapeutic agent inhibiting intracellular cholesterol transport. Cell death mediated by leelamine occurs due to the lysosomotropic property of the compound, its accumulation in the lysosome, and inhibition of cholesterol transport leading to lack of availability for key processes required for functioning of cancer cells. The present study dissects the structure-activity-relationship of leelamine using synthesized derivatives of leelamine and abietic acid, a structurally similar compound, to identify the moiety responsible for anti-cancer activity. Similar to leelamine, all active derivatives had an amino group or a similar moiety that confers a lysosomotropic property to the compound enabling its accumulation in the lysosome. Active derivatives inhibited intracellular cholesterol transport and hindered xenografted melanoma tumor development without obvious systemic toxicity. In silico studies suggested that active derivatives accumulating in lysosomes bound to NPC1, a protein responsible for cholesterol export from the lysosome, to inhibit its activity that then caused accumulation, and lack of cholesterol availability for other key cellular activities. Thus, active derivatives of leelamine or abietic acid maintained lysosomotropic properties, bound to NPC1, and disrupted cellular cholesterol transport as well as availability to retard tumor development.
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Affiliation(s)
- Raghavendra Gowda
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,The Penn State Melanoma and Skin Cancer Center, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Foreman Foundation for Melanoma Research Laboratory, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Gajanan S Inamdar
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Omer Kuzu
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Saketh S Dinavahi
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Jacek Krzeminski
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Madhu Babu Battu
- Drug Discovery Research Laboratory, INDRAS Private Limited, Hyderabad, India 500040
| | - Sreedhara R Voleti
- Drug Discovery Research Laboratory, INDRAS Private Limited, Hyderabad, India 500040
| | - Shantu Amin
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Gavin P Robertson
- Department of Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Dermatology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Department of Surgery, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,The Penn State Melanoma and Skin Cancer Center, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Penn State Melanoma Therapeutics Program, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.,Foreman Foundation for Melanoma Research Laboratory, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
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18
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Inhibition of Cdc42 is essential for Mig-6 suppression of cell migration induced by EGF. Oncotarget 2018; 7:49180-49193. [PMID: 27341132 PMCID: PMC5226500 DOI: 10.18632/oncotarget.10205] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Accepted: 05/12/2016] [Indexed: 11/25/2022] Open
Abstract
The adaptor protein Mig-6 is a negative regulator of EGF signaling. It is shown that Mig-6 inhibits cell migration via direct interaction with the ErbB receptors, thereby inhibiting cross-phosphorylation or targeting the receptors for degradation. Mig-6 has also been shown to bind to and inhibit the Rho GTPase Cdc42 to suppress cytoskeletal rearrangement. However, the molecular mechanism(s) by which Mig-6 inhibits cell migration via Cdc42 is still not entirely clear. Here, we show that Mig-6 binding to Cdc42 is necessary and sufficient to inhibit EGF-induced filopodia formation and migration. This binding, mediated by four specific residues (I11, R12, M26, R30) in the Mig-6 CRIB domain, is essential for Mig-6 function. In addition, ectopic expression of Cdc42 reverses Mig-6 inhibition of cell migration. Mig-6 CRIB domain, alone, is sufficient to inhibit cell migration. Conversely, Mig-6 binding to EGFR is dispensable for Mig-6-mediated inhibition of cell migration. Moreover, we found that decreased Mig-6 expression correlates with cancer progression in breast and prostate cancers. Together, our results demonstrate that Mig-6 inhibition of Cdc42 signaling is critical in Mig-6 function to suppress cell migration and that dysregulation of this pathway may play a critical role in cancer development.
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19
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Boopathy GTK, Lynn JLS, Wee S, Gunaratne J, Hong W. Phosphorylation of Mig6 negatively regulates the ubiquitination and degradation of EGFR mutants in lung adenocarcinoma cell lines. Cell Signal 2017; 43:21-31. [PMID: 29196224 DOI: 10.1016/j.cellsig.2017.11.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 11/16/2017] [Accepted: 11/27/2017] [Indexed: 12/29/2022]
Abstract
Activating mutations in the kinase domain of epidermal growth factor receptor (EGFR) leads to the constitutively active kinase, improves the EGFR stability and promotes malignant transformation in lung adenocarcinoma. Despite the clinical significance, the mechanism by which the increased kinase activity stabilizes the receptor is not completely understood. Using SILAC phosphoproteomic approach, we identify that Mig6 is highly phosphorylated at S256 in EGFR mutants (19del and L858R). Loss of Mig6 contributes to the efficient degradation of EGFR wildtype and mutants in lung cancer cells. Mig6 regulates the recruitment of c-Cbl to EGFR as the ablation of Mig6 enables efficient ubiquitination of the EGFR mutants through elevated recruitment of c-Cbl. We show that the cells with activating mutants of EGFR inactivate Mig6 through phosphorylation at S256. Inactivated Mig6 causes inefficient ubiquitination of EGFR, leading to defective degradation of the receptor thus contributing to the increased stability of the receptor. Taken together, we show a novel function of Mig6 in regulating the ubiquitination of EGFR.
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Affiliation(s)
- Gandhi T K Boopathy
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, 138673, Singapore.
| | - Julia Lim Sze Lynn
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, 138673, Singapore
| | - Sheena Wee
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, 138673, Singapore
| | - Jayantha Gunaratne
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, 138673, Singapore
| | - Wanjin Hong
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, 138673, Singapore.
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20
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Abstract
Breast cancer affects approximately 1 in 8 women, and it is estimated that over 246,660 women in the USA will be diagnosed with breast cancer in 2016. Breast cancer mortality has decline over the last two decades due to early detection and improved treatment. Over the last few years, there is mounting evidence to demonstrate the prominent role of receptor tyrosine kinases (RTKs) in tumor initiation and progression, and targeted therapies against the RTKs have been developed, evaluated in clinical trials, and approved for many cancer types, including breast cancer. However, not all breast cancers are the same as evidenced by the multiple subtypes of the disease, with some more aggressive than others, showing differential treatment response to different types of drugs. Moreover, in addition to canonical signaling from the cell surface, many RTKs can be trafficked to various subcellular compartments, e.g., the multivesicular body and nucleus, where they carry out critical cellular functions, such as cell proliferation, DNA replication and repair, and therapeutic resistance. In this review, we provide a brief summary on the role of a selected number of RTKs in breast cancer and describe some mechanisms of resistance to targeted therapies.
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Affiliation(s)
- Jennifer L Hsu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX, 77030, USA.,Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University, Taichung, 404, Taiwan.,Department of Biotechnology, Asia University, Taichung, 413, Taiwan
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX, 77030, USA. .,Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University, Taichung, 404, Taiwan. .,Department of Biotechnology, Asia University, Taichung, 413, Taiwan.
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21
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Hass H, Masson K, Wohlgemuth S, Paragas V, Allen JE, Sevecka M, Pace E, Timmer J, Stelling J, MacBeath G, Schoeberl B, Raue A. Predicting ligand-dependent tumors from multi-dimensional signaling features. NPJ Syst Biol Appl 2017; 3:27. [PMID: 28944080 PMCID: PMC5607260 DOI: 10.1038/s41540-017-0030-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 08/23/2017] [Accepted: 08/28/2017] [Indexed: 12/11/2022] Open
Abstract
Targeted therapies have shown significant patient benefit in about 5-10% of solid tumors that are addicted to a single oncogene. Here, we explore the idea of ligand addiction as a driver of tumor growth. High ligand levels in tumors have been shown to be associated with impaired patient survival, but targeted therapies have not yet shown great benefit in unselected patient populations. Using an approach of applying Bagged Decision Trees (BDT) to high-dimensional signaling features derived from a computational model, we can predict ligand dependent proliferation across a set of 58 cell lines. This mechanistic, multi-pathway model that features receptor heterodimerization, was trained on seven cancer cell lines and can predict signaling across two independent cell lines by adjusting only the receptor expression levels for each cell line. Interestingly, for patient samples the predicted tumor growth response correlates with high growth factor expression in the tumor microenvironment, which argues for a co-evolution of both factors in vivo.
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Affiliation(s)
- Helge Hass
- Merrimack Pharmaceuticals, Inc., Cambridge, MA 02139 USA
- Institute of Physics, University of Freiburg, Freiburg, Germany
| | | | - Sibylle Wohlgemuth
- Department of Biosystems Science and Engineering and SIB Swiss Institute of Bioinformatics, ETH Zuerich, Zuerich, Switzerland
| | | | - John E. Allen
- Merrimack Pharmaceuticals, Inc., Cambridge, MA 02139 USA
| | - Mark Sevecka
- Merrimack Pharmaceuticals, Inc., Cambridge, MA 02139 USA
| | - Emily Pace
- Merrimack Pharmaceuticals, Inc., Cambridge, MA 02139 USA
- Celgene, San Francisco, CA 94158 USA
| | - Jens Timmer
- Institute of Physics, University of Freiburg, Freiburg, Germany
- BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg im Breisgau, Germany
| | - Joerg Stelling
- Department of Biosystems Science and Engineering and SIB Swiss Institute of Bioinformatics, ETH Zuerich, Zuerich, Switzerland
| | - Gavin MacBeath
- Merrimack Pharmaceuticals, Inc., Cambridge, MA 02139 USA
| | | | - Andreas Raue
- Merrimack Pharmaceuticals, Inc., Cambridge, MA 02139 USA
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22
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Hayes DA, Kunde DA, Taylor RL, Pyecroft SB, Sohal SS, Snow ET. ERBB3: A potential serum biomarker for early detection and therapeutic target for devil facial tumour 1 (DFT1). PLoS One 2017; 12:e0177919. [PMID: 28591206 PMCID: PMC5462353 DOI: 10.1371/journal.pone.0177919] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 05/05/2017] [Indexed: 12/13/2022] Open
Abstract
Devil Facial Tumour 1 (DFT1) is one of two transmissible neoplasms of Tasmanian devils (Sarcophilus harrisii) predominantly affecting their facial regions. DFT1's cellular origin is that of Schwann cell lineage where lesions are evident macroscopically late in the disease. Conversely, the pre-clinical timeframe from cellular transmission to appearance of DFT1 remains uncertain demonstrating the importance of an effective pre-clinical biomarker. We show that ERBB3, a marker expressed normally by the developing neural crest and Schwann cells, is immunohistohemically expressed by DFT1, therefore the potential of ERBB3 as a biomarker was explored. Under the hypothesis that serum ERBB3 levels may increase as DFT1 invades local and distant tissues our pilot study determined serum ERBB3 levels in normal Tasmanian devils and Tasmanian devils with DFT1. Compared to the baseline serum ERBB3 levels in unaffected Tasmanian devils, Tasmanian devils with DFT1 showed significant elevation of serum ERBB3 levels. Interestingly Tasmanian devils with cutaneous lymphoma (CL) also showed elevation of serum ERBB3 levels when compared to the baseline serum levels of Tasmanian devils without DFT1. Thus, elevated serum ERBB3 levels in otherwise healthy looking devils could predict possible DFT1 or CL in captive or wild devil populations and would have implications on the management, welfare and survival of Tasmanian devils. ERBB3 is also a therapeutic target and therefore the potential exists to consider modes of administration that may eradicate DFT1 from the wild.
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Affiliation(s)
- Dane A. Hayes
- Department of Primary Industries, Parks Water and Environment, Animal Health Laboratory, Launceston, Tasmania, Australia
- Save the Tasmanian Devil Program, University of Tasmania, Hobart, Tasmania, Australia
- School of Health Sciences, Faculty of Health, University of Tasmania, Launceston, Tasmania, Australia
| | - Dale A. Kunde
- School of Health Sciences, Faculty of Health, University of Tasmania, Launceston, Tasmania, Australia
| | - Robyn L. Taylor
- Save the Tasmanian Devil Program, University of Tasmania, Hobart, Tasmania, Australia
- Department of Primary Industries, Parks Water and Environment, Resource Management and Conservation, Hobart, Tasmania, Australia
| | - Stephen B. Pyecroft
- School of Animal & Veterinary Sciences, Faculty of Science, University of Adelaide, Roseworthy Campus, Roseworthy, South Australia
| | - Sukhwinder Singh Sohal
- School of Health Sciences, Faculty of Health, University of Tasmania, Launceston, Tasmania, Australia
| | - Elizabeth T. Snow
- School of Health Sciences, Faculty of Health, University of Tasmania, Launceston, Tasmania, Australia
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24
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Amorphous Silica Particles Relevant in Food Industry Influence Cellular Growth and Associated Signaling Pathways in Human Gastric Carcinoma Cells. NANOMATERIALS 2017; 7:nano7010018. [PMID: 28336852 PMCID: PMC5295208 DOI: 10.3390/nano7010018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 12/30/2016] [Accepted: 01/04/2017] [Indexed: 01/12/2023]
Abstract
Nanostructured silica particles are commonly used in biomedical and biotechnical fields, as well as, in cosmetics and food industry. Thus, their environmental and health impacts are of great interest and effects after oral uptake are only rarely investigated. In the present study, the toxicological effects of commercially available nano-scaled silica with a nominal primary diameter of 12 nm were investigated on the human gastric carcinoma cell line GXF251L. Besides the analysis of cytotoxic and proliferative effects and the comparison with effects of particles with a nominal primary diameter of 200 nm, emphasis was also given to their influence on the cellular epidermal growth factor receptor (EGFR) and mitogen-activated protein kinases (MAPK) signaling pathways—both of them deeply involved in the regulation of cellular processes like cell cycle progression, differentiation or proliferation. The investigated silica nanoparticles (NPs) were found to stimulate cell proliferation as measured by microscopy and the sulforhodamine B assay. In accordance, the nuclear level of the proliferation marker Ki-67 was enhanced in a concentration-dependent manner. At high particle concentrations also necrosis was induced. Finally, silica NPs affected the EGFR and MAPK pathways at various levels dependent on concentration and time. However, classical activation of the EGFR, to be reflected by enhanced levels of phosphorylation, could be excluded as major trigger of the proliferative stimulus. After 45 min of incubation the level of phosphorylated EGFR did not increase, whereas enhanced levels of total EGFR protein were observed. These results indicate interference with the complex homeostasis of the EGFR protein, whereby up to 24 h no impact on the transcription level was detected. In addition, downstream on the level of the MAP kinases ERK1/2 short term incubation appeared to affect total protein levels without clear increase in phosphorylation. Depending on the concentration range, enhanced levels of ERK1/2 phosphorylation were only observed after 24 h of incubation. Taken together, the present study demonstrates the potential of the tested silica particles to enhance the growth of gastric carcinoma cells. Although interference with the EGFR/MAPK cascade is observed, additional mechanisms are likely to be involved in the onset of the proliferative stimulus.
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25
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Kurozumi S, Yamaguchi Y, Hayashi SI, Hiyoshi H, Suda T, Gohno T, Matsumoto H, Takei H, Horiguchi J, Takeyoshi I, Oyama T, Kurosumi M. Prognostic value of the ubiquitin ligase carboxyl terminus of the Hsc70-interacting protein in postmenopausal breast cancer. Cancer Med 2016; 5:1873-82. [PMID: 27334118 PMCID: PMC4971916 DOI: 10.1002/cam4.780] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 04/24/2016] [Accepted: 04/25/2016] [Indexed: 12/26/2022] Open
Abstract
The carboxyl terminus of the Hsc70‐interacting protein (CHIP) is considered to induce the ubiquitination and degradation of several oncogenic proteins, and play a role in the inhibition of tumor progression and invasion under experimental conditions. However, the impact of CHIP expression on the prognosis of breast cancer patients has not yet been established. In this study, using an immunohistochemical method, 272 patients with invasive breast cancer were assessed for the expression of CHIP (graded scores 0‐3) and the statuses of biomarkers, such as estrogen receptor (ER), progesterone receptor (PgR), and HER2. The relationships between the statuses of CHIP and biomarkers as well as clinical features were also evaluated, and that between the expression of CHIP and patient prognosis was analyzed. We revealed that the strong expression of CHIP correlated with positive ER (P < 0.001), positive PgR (P < 0.001), and negative HER2 (P = 0.02). In postmenopausal patients, relapse‐free survival (RFS) was significantly better in the high CHIP group than in the low CHIP group (P = 0.042). In addition, RFS and cancer‐specific survival (CSS) were significantly better in patients with ER‐positive/CHIP score 3 tumors than in those with ER‐negative/CHIP score 0 tumors (RFS: P = 0.038, CSS: P = 0.0098). The methylation status of CHIP gene promoter did not always account for the down‐regulation of its expression. In conclusion, the overexpression of CHIP is a potent prognostic factor of a good prognosis in ER‐positive breast cancer patients in the postmenopausal phase.
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Affiliation(s)
- Sasagu Kurozumi
- Division of Breast Surgery, Saitama Cancer Center, 780 Komuro, Ina-machi, Kitaadachi-gun, Saitama, 362-0806, Japan.,Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, 371-8511, Gunma, Japan
| | - Yuri Yamaguchi
- Research Institute for Clinical Oncology, Saitama Cancer Center, 780 Komuro, Ina-machi, Kitaadachi-gun, Saitama, 362-0806, Japan
| | - Shin-Ichi Hayashi
- Department of Molecular and Functional Dynamics, Tohoku University, 2-1 Seiryo-chou, Aoba-ku, Sendai, 980-8575, Miyagi, Japan
| | - Hiromi Hiyoshi
- Center for Tsukuba Advanced Research Alliance, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8575, Ibaraki, Japan
| | - Tetsuji Suda
- Research Institute for Clinical Oncology, Saitama Cancer Center, 780 Komuro, Ina-machi, Kitaadachi-gun, Saitama, 362-0806, Japan
| | - Tatsuyuki Gohno
- Department of Molecular and Functional Dynamics, Tohoku University, 2-1 Seiryo-chou, Aoba-ku, Sendai, 980-8575, Miyagi, Japan
| | - Hiroshi Matsumoto
- Division of Breast Surgery, Saitama Cancer Center, 780 Komuro, Ina-machi, Kitaadachi-gun, Saitama, 362-0806, Japan
| | - Hiroyuki Takei
- Division of Breast Surgery, Saitama Cancer Center, 780 Komuro, Ina-machi, Kitaadachi-gun, Saitama, 362-0806, Japan
| | - Jun Horiguchi
- Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, 371-8511, Gunma, Japan
| | - Izumi Takeyoshi
- Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, 371-8511, Gunma, Japan
| | - Tetsunari Oyama
- Department of Diagnostic Pathology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, 371-8511, Gunma, Japan
| | - Masafumi Kurosumi
- Department of Pathology, Saitama Cancer Center, 780 Komuro, Ina-machi, Kitaadachi-gun, Saitama, 362-0806, Japan
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Jing Z, Li L, Wang X, Wang M, Cai Y, Jin ZI, Zhang YE. High c-Cbl expression in gliomas is associated with tumor progression and poor prognosis. Oncol Lett 2016; 11:2787-2791. [PMID: 27073553 PMCID: PMC4812512 DOI: 10.3892/ol.2016.4318] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 01/26/2016] [Indexed: 01/17/2023] Open
Abstract
Casitas B-lineage lymphoma (c-Cbl) expression has been linked to the development of several types of cancer. However, no studies on the association of c-Cbl and glioma have been published thus far. The present study examined glioma samples obtained from 136 patients treated at The First Hospital of China Medical University (Shenyang, China) from January 2007 to December 2009, and the expression levels of c-Cbl in the samples were evaluated by reverse transcription-quantitative polymerase chain reaction, immunohistochemistry and western blotting. Kaplan-Meier survival curves were generated and subjected to Cox regression analysis. The messenger RNA and protein levels of c-Cbl were observed to be upregulated in high-grade glioma, compared with low-grade glioma. A multivariate analysis revealed that the protein levels of c-Cbl were independently associated with overall survival [hazard ratio (HR)=4.923, 95% confidence interval (CI)=3.163–7.662; P<0.001]. Furthermore, the grade of the glioma (according to the World Health Organization criteria) was observed to be independent prognostic factors for progression-free survival and overall survival time (HR=8.842, 95% CI=7.827–9.989; P<0.001, and HR=10.247, 95% CI=9.009–11.655; P<0.001, respectively). Kaplan-Meier analysis and log-rank test indicated that high protein expression levels of c-Cbl were significantly associated with overall and progression-free survival (P<0.001). To the best of our knowledge, these results provide the first evidence that the overexpression of c-Cbl is correlated with advanced clinicopathological features and poor prognosis in patients with glioma.
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Affiliation(s)
- Zhitao Jing
- Department of Neurosurgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Long Li
- Department of Neurosurgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Xin Wang
- Department of Neurosurgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Minghao Wang
- Department of Neurosurgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Ying Cai
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Z I Jin
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Y E Zhang
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Kim HJ, Lin D, Lee HJ, Li M, Liebler DC. Quantitative Profiling of Protein Tyrosine Kinases in Human Cancer Cell Lines by Multiplexed Parallel Reaction Monitoring Assays. Mol Cell Proteomics 2015; 15:682-91. [PMID: 26631510 DOI: 10.1074/mcp.o115.056713] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Indexed: 12/12/2022] Open
Abstract
Protein tyrosine kinases (PTKs) play key roles in cellular signal transduction, cell cycle regulation, cell division, and cell differentiation. Dysregulation of PTK-activated pathways, often by receptor overexpression, gene amplification, or genetic mutation, is a causal factor underlying numerous cancers. In this study, we have developed a parallel reaction monitoring-based assay for quantitative profiling of 83 PTKs. The assay detects 308 proteotypic peptides from 54 receptor tyrosine kinases and 29 nonreceptor tyrosine kinases in a single run. Quantitative comparisons were based on the labeled reference peptide method. We implemented the assay in four cell models: 1) a comparison of proliferating versus epidermal growth factor-stimulated A431 cells, 2) a comparison of SW480Null (mutant APC) and SW480APC (APC restored) colon tumor cell lines, and 3) a comparison of 10 colorectal cancer cell lines with different genomic abnormalities, and 4) lung cancer cell lines with either susceptibility (11-18) or acquired resistance (11-18R) to the epidermal growth factor receptor tyrosine kinase inhibitor erlotinib. We observed distinct PTK expression changes that were induced by stimuli, genomic features or drug resistance, which were consistent with previous reports. However, most of the measured expression differences were novel observations. For example, acquired resistance to erlotinib in the 11-18 cell model was associated not only with previously reported up-regulation of MET, but also with up-regulation of FLK2 and down-regulation of LYN and PTK7. Immunoblot analyses and shotgun proteomics data were highly consistent with parallel reaction monitoring data. Multiplexed parallel reaction monitoring assays provide a targeted, systems-level profiling approach to evaluate cancer-related proteotypes and adaptations. Data are available through Proteome eXchange Accession PXD002706.
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Affiliation(s)
- Hye-Jung Kim
- From the ‡Jim Ayers Institute for Precancer Detection and Diagnosis and Departments of §Biochemistry and
| | - De Lin
- From the ‡Jim Ayers Institute for Precancer Detection and Diagnosis and Departments of §Biochemistry and
| | - Hyoung-Joo Lee
- From the ‡Jim Ayers Institute for Precancer Detection and Diagnosis and Departments of §Biochemistry and
| | - Ming Li
- ¶Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Daniel C Liebler
- From the ‡Jim Ayers Institute for Precancer Detection and Diagnosis and Departments of §Biochemistry and
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Abstract
Fibroblast Growth Factor Receptor 3 (FGFR3) is one of four high-affinity receptors for canonical FGF ligands. It acts in many tissues and plays a special role in skeletal development, especially post-embryonic bone growth, where it inhibits chondrocyte proliferation and differentiation. Gain of function mutations cause the most common forms of dwarfism in humans, and they are also detected in cancer. Triggered by ligand binding or in some cases mutation, FGFR3 activation involves dimerization of receptor monomers, phosphorylation of specific tyrosine residues in the receptor's kinase domain and in the tightly linked scaffold protein Fibroblast Receptor Factor Substrate 2 (FRS2). Signaling molecules recruited to these phosphorylation sites propagate signals through cascades that are subject to modulation. Signal output is also regulated by the fate of the receptor and the interval between its activation and degradation. Trafficking pathways have been identified for both lysosomal and proteasomal degradation, as well as, an alternative fate that involves intramembrane cleavage that produces an intracellular domain fragment capable of nuclear transport and potential function.
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Affiliation(s)
- Jyoti Narayana
- a Shriners Research Center, Shriners Hospitals for Children, Oregon Health & Science University , Portland , OR , USA
| | - William A Horton
- a Shriners Research Center, Shriners Hospitals for Children, Oregon Health & Science University , Portland , OR , USA
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29
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Anastasi S, Lamberti D, Alemà S, Segatto O. Regulation of the ErbB network by the MIG6 feedback loop in physiology, tumor suppression and responses to oncogene-targeted therapeutics. Semin Cell Dev Biol 2015; 50:115-24. [PMID: 26456277 DOI: 10.1016/j.semcdb.2015.10.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 10/02/2015] [Indexed: 01/08/2023]
Abstract
The ErbB signaling network instructs the execution of key cellular programs, such as cell survival, proliferation and motility, through the generation of robust signals of defined strength and duration. In contrast, unabated ErbB signaling disrupts tissue homeostasis and leads to cell transformation. Cells oppose the threat inherent in excessive ErbB activity through several mechanisms of negative feedback regulation. Inducible feedback inhibitors (IFIs) are expressed in the context of transcriptional responses triggered by ErbB signaling, thus being uniquely suited to regulate ErbB activity during the execution of complex cellular programs. This review focuses on MIG6, an IFI that restrains ErbB signaling by mediating ErbB kinase suppression and receptor down-regulation. We will review key issues in MIG6 function, regulation and tumor suppressor activity. Subsequently, the role for MIG6 loss in the pathogenesis of tumors driven by ErbB oncogenes as well as in the generation of cellular addiction to ErbB signaling will be discussed. We will conclude by analyzing feedback inhibition by MIG6 in the context of therapies directed against ErbB and non-ErbB oncogenes.
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Affiliation(s)
- Sergio Anastasi
- Laboratory of Cell Signaling, Regina Elena National Cancer Institute, via E. Chianesi, 53, 00144 Rome, Italy.
| | - Dante Lamberti
- Laboratory of Cell Signaling, Regina Elena National Cancer Institute, via E. Chianesi, 53, 00144 Rome, Italy.
| | - Stefano Alemà
- Institute of Cell Biology and Neurobiology, CNR, 00016 Monterotondo, Italy.
| | - Oreste Segatto
- Laboratory of Cell Signaling, Regina Elena National Cancer Institute, via E. Chianesi, 53, 00144 Rome, Italy.
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30
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Saha SS, Singh D, Raymond EL, Ganesan R, Caviness G, Grimaldi C, Woska JR, Mennerich D, Brown SE, Mbow ML, Kao CC. Signal Transduction and Intracellular Trafficking by the Interleukin 36 Receptor. J Biol Chem 2015; 290:23997-4006. [PMID: 26269592 DOI: 10.1074/jbc.m115.653378] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Indexed: 01/30/2023] Open
Abstract
Improper signaling of the IL-36 receptor (IL-36R), a member of the IL-1 receptor family, has been associated with various inflammation-associated diseases. However, the requirements for IL-36R signal transduction remain poorly characterized. This work seeks to define the requirements for IL-36R signaling and intracellular trafficking. In the absence of cognate agonists, IL-36R was endocytosed and recycled to the plasma membrane. In the presence of IL-36, IL-36R increased accumulation in LAMP1+ lysosomes. Endocytosis predominantly used a clathrin-mediated pathway, and the accumulation of the IL-36R in lysosomes did not result in increased receptor turnover. The ubiquitin-binding Tollip protein contributed to IL-36R signaling and increased the accumulation of both subunits of the IL-36R.
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Affiliation(s)
- Siddhartha S Saha
- From the Department of Molecular and Cellular Biochemistry, Indiana University, Bloomington, Indiana 47401 and
| | - Divyendu Singh
- From the Department of Molecular and Cellular Biochemistry, Indiana University, Bloomington, Indiana 47401 and
| | - Ernest L Raymond
- Boehringer Ingelheim Pharmaceuticals, Ridgefield, Connecticut 06877
| | - Rajkumar Ganesan
- Boehringer Ingelheim Pharmaceuticals, Ridgefield, Connecticut 06877
| | - Gary Caviness
- Boehringer Ingelheim Pharmaceuticals, Ridgefield, Connecticut 06877
| | | | - Joseph R Woska
- Boehringer Ingelheim Pharmaceuticals, Ridgefield, Connecticut 06877
| | - Detlev Mennerich
- Boehringer Ingelheim Pharmaceuticals, Ridgefield, Connecticut 06877
| | - Su-Ellen Brown
- Boehringer Ingelheim Pharmaceuticals, Ridgefield, Connecticut 06877
| | - M Lamine Mbow
- Boehringer Ingelheim Pharmaceuticals, Ridgefield, Connecticut 06877
| | - C Cheng Kao
- From the Department of Molecular and Cellular Biochemistry, Indiana University, Bloomington, Indiana 47401 and
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31
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Schulz H, Dahlhoff M, Glogowska A, Zhang L, Arnold GJ, Fröhlich T, Schneider MR, Klonisch T. Betacellulin transgenic mice develop urothelial hyperplasia and show sex-dependent reduction in urinary major urinary protein content. Exp Mol Pathol 2015; 99:33-8. [PMID: 25943456 DOI: 10.1016/j.yexmp.2015.05.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 05/01/2015] [Indexed: 12/13/2022]
Abstract
The epidermal growth factor (EGF)-like ligands and their cognate ERBB1-4 receptors represent important signaling pathways that regulate tissue and cell proliferation, differentiation and regeneration in a wide variety of tissues, including the urogenital tract. Betacellulin (BTC) can activate all four ERBB tyrosine kinase receptors and is a multifunctional EGF-like ligand with diverse roles in β cell differentiation, bone maturation, formation of functional epithelial linings and vascular permeability in different organs. Using transgenic BTC mice, we have studied the effect of constitutive systemic BTC over-expression on the urinary bladder. BTC was detected in microvascular structures of the stromal bladder compartment and in umbrella cells representing the protective apical lining of the uroepithelium. ERBB1 and ERBB4 receptors were co-localized in the urothelium. Mice transgenic for BTC and double transgenic for both BTC and the dominant kinase-dead mutant of EGFR (Waved 5) developed hyperplasia of the uroepithelium at 5months of age, suggesting that urothelial hyperplasia was not exclusively dependent on ERBB1/EGFR. Mass spectrometric analysis of urine revealed a significant down-regulation of major urinary proteins in female BTC transgenic mice, suggesting a novel role for systemic BTC in odor-based signaling in female transgenic BTC mice.
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Affiliation(s)
- Helene Schulz
- Dept. of Human Anatomy and Cell Science, University of Manitoba, Faculty of Health Sciences, College of Medicine, Winnipeg, MB R3E 0J9, Canada; National Microbiology Laboratory, Winnipeg, Manitoba, Canada
| | - Maik Dahlhoff
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Feodor-Lynen-Str. 25, 81377 Munich, Germany
| | - Aleksandra Glogowska
- Dept. of Human Anatomy and Cell Science, University of Manitoba, Faculty of Health Sciences, College of Medicine, Winnipeg, MB R3E 0J9, Canada
| | - Lin Zhang
- Dept. of Human Anatomy and Cell Science, University of Manitoba, Faculty of Health Sciences, College of Medicine, Winnipeg, MB R3E 0J9, Canada
| | - Georg J Arnold
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, Ludwig-Maximilians-University, Munich, Germany
| | - Thomas Fröhlich
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, Ludwig-Maximilians-University, Munich, Germany
| | - Marlon R Schneider
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Feodor-Lynen-Str. 25, 81377 Munich, Germany
| | - Thomas Klonisch
- Dept. of Human Anatomy and Cell Science, University of Manitoba, Faculty of Health Sciences, College of Medicine, Winnipeg, MB R3E 0J9, Canada; Dept. of Medical Microbiology & Infectious Diseases, University of Manitoba, Faculty of Health Sciences, College of Medicine, Winnipeg, MB R3E 0J9, Canada; Dept. of Surgery, University of Manitoba, Faculty of Health Sciences, College of Medicine, Winnipeg, MB R3E 0J9, Canada.
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32
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Shimokawa N, Koibuchi N. Downregulation of receptor tyrosine kinases through ubiquitination: analysis by immunodetection. Methods Mol Biol 2015; 1233:121-133. [PMID: 25319895 DOI: 10.1007/978-1-4939-1789-1_12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
After ligand binding, receptor tyrosine kinases (RTKs) transmit intracellular signals involved in the regulation of various cell events and then attenuate signal transduction. Ubiquitination is a critical step involved in the downregulation of RTK signaling. Here, we describe how to immunodetect the ligand-induced ubiquitination and degradation of TrkA, an RTK, by immunoprecipitation and Western blotting.
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Affiliation(s)
- Noriaki Shimokawa
- Department of Integrative Physiology, Gunma University Graduate School of Medicine, Showa-machi, Maebashi, Gunma, 371-8511, Japan,
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33
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Goldkorn T, Filosto S, Chung S. Lung injury and lung cancer caused by cigarette smoke-induced oxidative stress: Molecular mechanisms and therapeutic opportunities involving the ceramide-generating machinery and epidermal growth factor receptor. Antioxid Redox Signal 2014; 21:2149-74. [PMID: 24684526 PMCID: PMC4215561 DOI: 10.1089/ars.2013.5469] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) and lung cancer are frequently caused by tobacco smoking. However, these diseases present opposite phenotypes involving redox signaling at the cellular level. While COPD is characterized by excessive airway epithelial cell death and lung injury, lung cancer is caused by uncontrolled epithelial cell proliferation. Notably, epidemiological studies have demonstrated that lung cancer incidence is significantly higher in patients who have preexisting emphysema/lung injury. However, the molecular link and common cell signaling events underlying lung injury diseases and lung cancer are poorly understood. This review focuses on studies of molecular mechanism(s) underlying smoking-related lung injury (COPD) and lung cancer. Specifically, the role of the ceramide-generating machinery during cigarette smoke-induced oxidative stress leading to both apoptosis and proliferation of lung epithelial cells is emphasized. Over recent years, it has been established that ceramide is a sphingolipid playing a major role in lung epithelia structure/function leading to lung injury in chronic pulmonary diseases. However, new and unexpected findings draw attention to its potential role in lung development, cell proliferation, and tumorigenesis. To address this dichotomy in detail, evidence is presented regarding several protein targets, including Src, p38 mitogen-activated protein kinase, and neutral sphingomyelinase 2, the major sphingomyelinase that controls ceramide generation during oxidative stress. Furthermore, their roles are presented not only in apoptosis and lung injury but also in enhancing cell proliferation, lung cancer development, and resistance to epidermal growth factor receptor-targeted therapy for treating lung cancer.
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Affiliation(s)
- Tzipora Goldkorn
- Center for Comparative Respiratory Biology and Medicine, Genome and Biomedical Sciences Facility, University of California School of Medicine , Davis, California
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34
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Kumar CV, Swetha RG, Ramaiah S, Anbarasu A. Tryptophan to Glycine mutation in the position 116 leads to protein aggregation and decreases the stability of the LITAF protein. J Biomol Struct Dyn 2014; 33:1695-709. [DOI: 10.1080/07391102.2014.968211] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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35
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Awasthi S, Hamburger AW. Heregulin negatively regulates transcription of ErbB2/3 receptors via an AKT-mediated pathway. J Cell Physiol 2014; 229:1831-41. [PMID: 24692179 DOI: 10.1002/jcp.24637] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 03/28/2014] [Indexed: 11/08/2022]
Abstract
Despite the importance of the ErbB2/3 heterodimer in breast cancer progression, the negative regulation of these receptors is still poorly understood. We demonstrate here for the first time that the ErbB3/4 ligand heregulin (HRG) reduced both ErbB2 and ErbB3 mRNA and protein levels in human breast cancer cell lines. In contrast, EGFR levels were unaffected by HRG treatment. The effect was rapid with a decline in steady-state mRNA levels first noted 2 h after HRG treatment. HRG reduced the rate of transcription of ErbB2 and ErbB3 mRNA, but did not affect ErbB2 or ErbB3 mRNA stability. To test if ErbB2 kinase activity was required for the HRG-induced downregulation, we treated cells with the ErbB2/EGFR inhibitor lapatinib. Lapatinib diminished the HRG-induced decrease in ErbB2 and ErbB3 mRNA and protein, suggesting that the kinase activity of EGFR/ErbB2 is involved in the HRG-induced receptor downregulation. Further, HRG-mediated decreases in ErbB2/3 mRNA transcription are reversed by inhibiting the AKT but not MAPK pathway. To examine the functional consequences of HRG-mediated decreases in ErbB receptor levels, we performed cell-cycle analysis. HRG blocked cell-cycle progression and lapatinib reversed this block. Our findings support a role for HRG in the negative regulation of ErbB expression and suggest that inhibition of ErbB2/3 signaling by ErbB2 directed therapies may interfere with this process. J. Cell. Physiol. 229: 1831-1841, 2014. © 2014 Wiley Periodicals, Inc.
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Affiliation(s)
- Smita Awasthi
- Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland; Department of Pathology, University of Maryland School of Medicine, Baltimore, Maryland
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36
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Akimov V, Henningsen J, Hallenborg P, Rigbolt KTG, Jensen SS, Nielsen MM, Kratchmarova I, Blagoev B. StUbEx: Stable tagged ubiquitin exchange system for the global investigation of cellular ubiquitination. J Proteome Res 2014; 13:4192-204. [PMID: 25093938 DOI: 10.1021/pr500549h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Post-translational modification of proteins with the small polypeptide ubiquitin plays a pivotal role in many cellular processes, altering protein lifespan, location, and function and regulating protein-protein interactions. Ubiquitination exerts its diverse functions through complex mechanisms by formation of different polymeric chains and subsequent recognition of the ubiquitin signal by specific protein interaction domains. Despite some recent advances in the analytical tools for the analysis of ubiquitination by mass spectrometry, there is still a need for additional strategies suitable for investigation of cellular ubiquitination at the proteome level. Here, we present a stable tagged ubiquitin exchange (StUbEx) cellular system in which endogenous ubiquitin is replaced with an epitope-tagged version, thereby allowing specific and efficient affinity purification of ubiquitinated proteins for global analyses of protein ubiquitination. Importantly, the overall level of ubiquitin in the cell remains virtually unchanged, thus avoiding ubiquitination artifacts associated with overexpression. The efficiency and reproducibility of the method were assessed through unbiased analysis of epidermal growth factor (EGF) signaling by quantitative mass spectrometry, covering over 3400 potential ubiquitinated proteins. The StUbEx system is applicable to virtually any cell line and can be readily adapted to any of the ubiquitin-like post-translational modifications.
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Affiliation(s)
- Vyacheslav Akimov
- Center for Experimental Bioinformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark , Campusvej 55, DK-5230 Odense, Denmark
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37
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Kon S, Kobayashi N, Satake M. Altered trafficking of mutated growth factor receptors and their associated molecules: implication for human cancers. CELLULAR LOGISTICS 2014; 4:e28461. [PMID: 25210647 PMCID: PMC4156482 DOI: 10.4161/cl.28461] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 03/06/2014] [Accepted: 03/07/2014] [Indexed: 01/01/2023]
Abstract
Ligand-stimulated receptor tyrosine kinases (RTKs) are phosphorylated/ubiquitinated, endocytosed and transported to the lysosomes via endosomes/multivesicular bodies, resulting in the attenuation of signal transmission. If this physiological mechanism of RTK signal downregulation is perturbed, signal transduction persists and may contribute to cellular transformation. This article presents several such examples. In some cases, endocytosis is impaired, and the activated RTK remains on the plasma membrane. In other cases, the activated RTK is endocytosed into endosomes/multivesicular bodies, but not subsequently sorted to the lysosomes for degradation. The latter cases indicate that even endocytosed RTKs can transmit signals. Transport of RTKs is accomplished via the formation and movement of membrane vesicles. Blockage or delay of endocytosis/trafficking can be caused by genetic alterations in the RTK itself or by mutations in CBL, Arf GAPs, or other components involved in internalization and vesicle transport. A survey of the literature indicates that, in some cases, even RTKs synthesized de novo can initiate signaling at the endoplasmic reticulum/Golgi before reaching the plasma membrane. The spectrum of molecules targeted by the signal is likely to be different between cell surface- and endoplasmic reticulum/Golgi-localized RTKs.
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Affiliation(s)
- Shunsuke Kon
- Institute of Development, Aging and Cancer, Tohoku University; Sendai, Japan
| | - Nobuhide Kobayashi
- Institute of Development, Aging and Cancer, Tohoku University; Sendai, Japan
| | - Masanobu Satake
- Institute of Development, Aging and Cancer, Tohoku University; Sendai, Japan
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38
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Diverse roles of C-terminal Hsp70-interacting protein (CHIP) in tumorigenesis. J Cancer Res Clin Oncol 2013; 140:189-97. [DOI: 10.1007/s00432-013-1571-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 12/12/2013] [Indexed: 12/23/2022]
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39
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Okon IS, Coughlan KA, Zou MH. Liver kinase B1 expression promotes phosphatase activity and abrogation of receptor tyrosine kinase phosphorylation in human cancer cells. J Biol Chem 2013; 289:1639-48. [PMID: 24285539 DOI: 10.1074/jbc.m113.500934] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Aberrant receptor tyrosine kinase phosphorylation (pRTK) has been associated with diverse pathological conditions, including human neoplasms. In lung cancer, frequent liver kinase B1 (LKB1) mutations correlate with tumor progression, but potential links with pRTK remain unknown. Heightened and sustained receptor activation was demonstrated by LKB1-deficient A549 (lung) and HeLaS3 (cervical) cancer cell lines. Depletion (siRNA) of endogenous LKB1 expression in H1792 lung cancer cells also correlated with increased pRTK. However, ectopic LKB1 expression in A549 and HeLaS3 cell lines, as well as H1975 activating-EGF receptor mutant lung cancer cell resulted in dephosphorylation of several tumor-enhancing RTKs, including EGF receptor, ErbB2, hepatocyte growth factor receptor (c-Met), EphA2, rearranged during transfection (RET), and insulin-like growth factor I receptor. Receptor abrogation correlated with attenuation of phospho-Akt and increased apoptosis. Global phosphatase inhibition by orthovanadate or depletion of protein tyrosine phosphatases (PTPs) resulted in the recovery of receptor phosphorylation. Specifically, the activity of SHP-2, PTP-1β, and PTP-PEST was enhanced by LKB1-expressing cells. Our findings provide novel insight on how LKB1 loss of expression or function promotes aberrant RTK signaling and rapid growth of cancer cells.
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40
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Ivanova YL, Edelweiss EF, Leonova OG, Balandin TG, Popenko VI, Deyev SM. Immunocytochemical visualization of P185HER2 receptor using antibodies fused with dibarnase and conjugate of barstar with colloidal gold. Mol Biol 2013. [DOI: 10.1134/s0026893313050063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Ortega Roldan JL, Casares S, Ringkjøbing Jensen M, Cárdenes N, Bravo J, Blackledge M, Azuaga AI, van Nuland NAJ. Distinct ubiquitin binding modes exhibited by SH3 domains: molecular determinants and functional implications. PLoS One 2013; 8:e73018. [PMID: 24039852 PMCID: PMC3770644 DOI: 10.1371/journal.pone.0073018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 07/18/2013] [Indexed: 12/03/2022] Open
Abstract
SH3 domains constitute a new type of ubiquitin-binding domains. We previously showed that the third SH3 domain (SH3-C) of CD2AP binds ubiquitin in an alternative orientation. We have determined the structure of the complex between first CD2AP SH3 domain and ubiquitin and performed a structural and mutational analysis to decipher the determinants of the SH3-C binding mode to ubiquitin. We found that the Phe-to-Tyr mutation in CD2AP and in the homologous CIN85 SH3-C domain does not abrogate ubiquitin binding, in contrast to previous hypothesis and our findings for the first two CD2AP SH3 domains. The similar alternative binding mode of the SH3-C domains of these related adaptor proteins is characterised by a higher affinity to C-terminal extended ubiquitin molecules. We conclude that CD2AP/CIN85 SH3-C domain interaction with ubiquitin constitutes a new ubiquitin-binding mode involved in a different cellular function and thus changes the previously established mechanism of EGF-dependent CD2AP/CIN85 mono-ubiquitination.
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Affiliation(s)
- Jose L. Ortega Roldan
- Departamento de Química Física e Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, Granada, Spain
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | - Salvador Casares
- Departamento de Química Física e Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - Malene Ringkjøbing Jensen
- Protein Dynamics and Flexibility by NMR, Institut de Biologie Structurale Jean-Pierre Ebel, CEA, CNRS, UJF UMR 5075, Grenoble, France
| | - Nayra Cárdenes
- Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Jerónimo Bravo
- Instituto de Biomedicina de Valencia, IBV-CSIC, Valencia, Spain
| | - Martin Blackledge
- Protein Dynamics and Flexibility by NMR, Institut de Biologie Structurale Jean-Pierre Ebel, CEA, CNRS, UJF UMR 5075, Grenoble, France
| | - Ana I. Azuaga
- Departamento de Química Física e Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, Granada, Spain
- * E-mail: (AIA); (NAJvN)
| | - Nico A. J. van Nuland
- Structural Biology Brussels, Vrije Universiteit Brussel (VUB), Brussels, Belgium
- Department of Structural Biology, VIB, Brussels, Belgium
- * E-mail: (AIA); (NAJvN)
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Hepatitis B Virus-Encoded X Protein Downregulates EGFR Expression via Inducing MicroRNA-7 in Hepatocellular Carcinoma Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:682380. [PMID: 23840262 PMCID: PMC3693120 DOI: 10.1155/2013/682380] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 05/23/2013] [Indexed: 12/18/2022]
Abstract
Hepatitis B virus (HBV) infection accounts for over a half of cases of hepatocellular carcinoma (HCC), the most frequent malignant tumor of the liver. HBV-encoded X (HBx) plays critical roles in HBV-associated hepatocarcinogenesis. However, it is unclear whether and how HBx regulates the expression of epidermal growth factor receptor (EGFR), an important gene for cell growth. Therefore, the study aimed to investigate the association between HBx and EGFR expression. In this study, we found that HBx upregulates miR-7 expression to target 3′UTR of EGFR mRNA, which in turn results in the reduction of EGFR protein expression in HCC cells. HBx-mediated EGFR suppression renders HCC cells a slow-growth behavior. Deprivation of HBx or miR-7 expression or restoration of EGFR expression can increase the growth rate of HCC cells. Our data showed the miR-7-dependent EGFR suppression by HBx, supporting an inhibitory role of HBx in the cell growth of HCC. These findings not only identify miR-7 as a novel regulatory target of HBx, but also suggest HBx-miR-7-EGFR as a critical signaling in controlling the growth rate of HCC cells.
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Jin C, Rajabi H, Rodrigo CM, Porco JA, Kufe D. Targeting the eIF4A RNA helicase blocks translation of the MUC1-C oncoprotein. Oncogene 2013; 32:2179-88. [PMID: 22689062 PMCID: PMC3443512 DOI: 10.1038/onc.2012.236] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 05/07/2012] [Accepted: 05/10/2012] [Indexed: 12/15/2022]
Abstract
The oncogenic MUC1 C-terminal subunit (MUC1-C) subunit is aberrantly overexpressed in most human breast cancers by mechanisms that are not well understood. The present studies demonstrate that stimulation of non-malignant MCF-10A cells with epidermal growth factor (EGF) or heregulin (HRG) results in marked upregulation of MUC1-C translation. Growth factor-induced MUC1-C translation was found to be mediated by PI3KAKT, and not by MEKERK1/2, signaling. We also show that activation of the mammalian target of rapamycin complex 1 (mTORC1)ribosomal protein S6 kinase 1 (S6K1) pathway decreases tumor suppressor programmed cell death protein 4 (PDCD4), an inhibitor of the eIF4A RNA helicase, and contributes to the induction of MUC1-C translation. In concert with these results, treatment of growth factor-stimulated MCF-10A cells with the eIF4A RNA helicase inhibitors, silvestrol and CR-1-31-B, blocked increases in MUC1-C abundance. The functional significance of the increase in MUC1-C translation is supported by the demonstration that MUC1-C, in turn, forms complexes with EGF receptor (EGFR) and promotes EGFR-mediated activation of the PI3KAKT pathway and the induction of growth. Compared with MCF-10A cells, constitutive overexpression of MUC1-C in breast cancer cells was unaffected by EGF stimulation, but was blocked by inhibiting PI3KAKT signaling. The overexpression of MUC1-C in breast cancer cells was also inhibited by blocking eIF4A RNA helicase activity with silvestrol and CR-1-31-B. These findings indicate that EGF-induced MUC1-C expression is mediated by the PI3KAKT pathway and the eIF4A RNA helicase, and that this response promotes EGFR signaling in an autoinductive loop. The findings also indicate that targeting the eIF4A RNA helicase is a novel approach for blocking MUC1-C overexpression in breast cancer cells.
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Affiliation(s)
- C Jin
- Harvard Medical School, Dana-Farber Cancer Institute, Boston, MA, USA
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44
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Gouttenoire EA, Lupo V, Calpena E, Bartesaghi L, Schüpfer F, Médard JJ, Maurer F, Beckmann JS, Senderek J, Palau F, Espinós C, Chrast R. Sh3tc2 deficiency affects neuregulin-1/ErbB signaling. Glia 2013; 61:1041-51. [PMID: 23553667 DOI: 10.1002/glia.22493] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 02/01/2013] [Indexed: 12/19/2022]
Abstract
Mutations in SH3TC2 trigger autosomal recessive demyelinating Charcot-Marie-Tooth type 4C (CMT4C) neuropathy. Sh3tc2 is specifically expressed in Schwann cells and is necessary for proper myelination of peripheral axons. In line with the early onset of neuropathy observed in patients with CMT4C, our analyses of the murine model of CMT4C revealed that the myelinating properties of Sh3tc2-deficient Schwann cells are affected at an early stage. This early phenotype is associated with changes in the canonical Nrg1/ErbB pathway involved in control of myelination. We demonstrated that Sh3tc2 interacts with ErbB2 and plays a role in the regulation of ErbB2 intracellular trafficking from the plasma membrane upon Nrg1 activation. Interestingly, both the loss of Sh3tc2 function in mice and the pathological mutations present in CMT4C patients affect ErbB2 internalization, potentially altering its downstream intracellular signaling pathways. Altogether, our results indicate that the molecular mechanism for the axonal size sensing is disturbed in Sh3tc2-deficient myelinating Schwann cells, thus providing a novel insight into the pathophysiology of CMT4C neuropathy.
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45
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Lee SM, Chin LS, Li L. Charcot-Marie-Tooth disease-linked protein SIMPLE functions with the ESCRT machinery in endosomal trafficking. ACTA ACUST UNITED AC 2012; 199:799-816. [PMID: 23166352 PMCID: PMC3514783 DOI: 10.1083/jcb.201204137] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
SIMPLE functions with the ESCRT machinery to promote endosome-to-lysosome trafficking, and this function is impaired by Charcot-Marie-Tooth disease–associated mutations. Mutations in small integral membrane protein of lysosome/late endosome (SIMPLE) cause autosomal dominant, Charcot-Marie-Tooth disease (CMT) type 1C. The cellular function of SIMPLE is unknown and the pathogenic mechanism of SIMPLE mutations remains elusive. Here, we report that SIMPLE interacted and colocalized with endosomal sorting complex required for transport (ESCRT) components STAM1, Hrs, and TSG101 on early endosomes and functioned with the ESCRT machinery in the control of endosome-to-lysosome trafficking. Our analyses revealed that SIMPLE was required for efficient recruitment of ESCRT components to endosomal membranes and for regulating endosomal trafficking and signaling attenuation of ErbB receptors. We found that the ability of SIMPLE to regulate ErbB trafficking and signaling was impaired by CMT-linked SIMPLE mutations via a loss-of-function, dominant-negative mechanism, resulting in prolonged activation of ERK1/2 signaling. Our findings indicate a function of SIMPLE as a regulator of endosomal trafficking and provide evidence linking dysregulated endosomal trafficking to CMT pathogenesis.
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Affiliation(s)
- Samuel M Lee
- Department of Pharmacology and Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA 30322, USA
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46
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Kazerounian S, Gerald D, Huang M, Chin YR, Udayakumar D, Zheng N, O'Donnell RK, Perruzzi C, Mangiante L, Pourat J, Phung TL, Bravo-Nuevo A, Shechter S, McNamara S, Duhadaway JB, Kocher ON, Brown LF, Toker A, Prendergast GC, Benjamin LE. RhoB differentially controls Akt function in tumor cells and stromal endothelial cells during breast tumorigenesis. Cancer Res 2012; 73:50-61. [PMID: 23135917 DOI: 10.1158/0008-5472.can-11-3055] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Tumors are composed of cancer cells but also a larger number of diverse stromal cells in the tumor microenvironment. Stromal cells provide essential supports to tumor pathophysiology but the distinct characteristics of their signaling networks are not usually considered in developing drugs to target tumors. This oversight potentially confounds proof-of-concept studies and increases drug development risks. Here, we show in established murine and human models of breast cancer how differential regulation of Akt by the small GTPase RhoB in cancer cells or stromal endothelial cells determines their dormancy versus outgrowth when angiogenesis becomes critical. In cancer cells in vitro or in vivo, RhoB functions as a tumor suppressor that restricts EGF receptor (EGFR) cell surface occupancy as well as Akt signaling. However, after activation of the angiogenic switch, RhoB functions as a tumor promoter by sustaining endothelial Akt signaling, growth, and survival of stromal endothelial cells that mediate tumor neoangiogenesis. Altogether, the positive impact of RhoB on angiogenesis and progression supercedes its negative impact in cancer cells themselves. Our findings elucidate the dominant positive role of RhoB in cancer. More generally, they illustrate how differential gene function effects on signaling pathways in the tumor stromal component can complicate the challenge of developing therapeutics to target cancer pathophysiology.
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Affiliation(s)
- Shiva Kazerounian
- Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
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47
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Mohapatra B, Ahmad G, Nadeau S, Zutshi N, An W, Scheffe S, Dong L, Feng D, Goetz B, Arya P, Bailey TA, Palermo N, Borgstahl GEO, Natarajan A, Raja SM, Naramura M, Band V, Band H. Protein tyrosine kinase regulation by ubiquitination: critical roles of Cbl-family ubiquitin ligases. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2012; 1833:122-39. [PMID: 23085373 DOI: 10.1016/j.bbamcr.2012.10.010] [Citation(s) in RCA: 163] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 10/05/2012] [Accepted: 10/08/2012] [Indexed: 12/20/2022]
Abstract
Protein tyrosine kinases (PTKs) coordinate a broad spectrum of cellular responses to extracellular stimuli and cell-cell interactions during development, tissue homeostasis, and responses to environmental challenges. Thus, an understanding of the regulatory mechanisms that ensure physiological PTK function and potential aberrations of these regulatory processes during diseases such as cancer are of broad interest in biology and medicine. Aside from the expected role of phospho-tyrosine phosphatases, recent studies have revealed a critical role of covalent modification of activated PTKs with ubiquitin as a critical mechanism of their negative regulation. Members of the Cbl protein family (Cbl, Cbl-b and Cbl-c in mammals) have emerged as dominant "activated PTK-selective" ubiquitin ligases. Structural, biochemical and cell biological studies have established that Cbl protein-dependent ubiquitination targets activated PTKs for degradation either by facilitating their endocytic sorting into lysosomes or by promoting their proteasomal degradation. This mechanism also targets PTK signaling intermediates that become associated with Cbl proteins in a PTK activation-dependent manner. Cellular and animal studies have established that the relatively broadly expressed mammalian Cbl family members Cbl and Cbl-b play key physiological roles, including their critical functions to prevent the transition of normal immune responses into autoimmune disease and as tumor suppressors; the latter function has received validation from human studies linking mutations in Cbl to human leukemia. These newer insights together with embryonic lethality seen in mice with a combined deletion of Cbl and Cbl-b genes suggest an unappreciated role of the Cbl family proteins, and by implication the ubiquitin-dependent control of activated PTKs, in stem/progenitor cell maintenance. Future studies of existing and emerging animal models and their various cell lineages should help test the broader implications of the evolutionarily-conserved Cbl family protein-mediated, ubiquitin-dependent, negative regulation of activated PTKs in physiology and disease.
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Affiliation(s)
- Bhopal Mohapatra
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
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48
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Mohapatra B, Ahmad G, Nadeau S, Zutshi N, An W, Scheffe S, Dong L, Feng D, Goetz B, Arya P, Bailey TA, Palermo N, Borgstahl GEO, Natarajan A, Raja SM, Naramura M, Band V, Band H. Protein tyrosine kinase regulation by ubiquitination: critical roles of Cbl-family ubiquitin ligases. BIOCHIMICA ET BIOPHYSICA ACTA 2012. [PMID: 23085373 DOI: 10.1016/j.bbamcr] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Protein tyrosine kinases (PTKs) coordinate a broad spectrum of cellular responses to extracellular stimuli and cell-cell interactions during development, tissue homeostasis, and responses to environmental challenges. Thus, an understanding of the regulatory mechanisms that ensure physiological PTK function and potential aberrations of these regulatory processes during diseases such as cancer are of broad interest in biology and medicine. Aside from the expected role of phospho-tyrosine phosphatases, recent studies have revealed a critical role of covalent modification of activated PTKs with ubiquitin as a critical mechanism of their negative regulation. Members of the Cbl protein family (Cbl, Cbl-b and Cbl-c in mammals) have emerged as dominant "activated PTK-selective" ubiquitin ligases. Structural, biochemical and cell biological studies have established that Cbl protein-dependent ubiquitination targets activated PTKs for degradation either by facilitating their endocytic sorting into lysosomes or by promoting their proteasomal degradation. This mechanism also targets PTK signaling intermediates that become associated with Cbl proteins in a PTK activation-dependent manner. Cellular and animal studies have established that the relatively broadly expressed mammalian Cbl family members Cbl and Cbl-b play key physiological roles, including their critical functions to prevent the transition of normal immune responses into autoimmune disease and as tumor suppressors; the latter function has received validation from human studies linking mutations in Cbl to human leukemia. These newer insights together with embryonic lethality seen in mice with a combined deletion of Cbl and Cbl-b genes suggest an unappreciated role of the Cbl family proteins, and by implication the ubiquitin-dependent control of activated PTKs, in stem/progenitor cell maintenance. Future studies of existing and emerging animal models and their various cell lineages should help test the broader implications of the evolutionarily-conserved Cbl family protein-mediated, ubiquitin-dependent, negative regulation of activated PTKs in physiology and disease.
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Affiliation(s)
- Bhopal Mohapatra
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
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49
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Li H, Duan ZW, Xie P, Liu YR, Wang WC, Dou SX, Wang PY. Effects of paclitaxel on EGFR endocytic trafficking revealed using quantum dot tracking in single cells. PLoS One 2012; 7:e45465. [PMID: 23029028 PMCID: PMC3447934 DOI: 10.1371/journal.pone.0045465] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 08/22/2012] [Indexed: 12/31/2022] Open
Abstract
Paclitaxel (PTX), a chemotherapeutic drug, affects microtubule dynamics and influences endocytic trafficking. However, the mechanism and the dynamics of altered endocytic trafficking by paclitaxel treatment in single living cells still remain elusive. By labeling quantum dots (QDs) to the epidermal growth factor (EGF), we continuously tracked the endocytosis and post-endocytic trafficking of EGF receptors (EGFRs) in A549 cells for a long time interval. A single-cell analysis method was introduced to quantitatively study the dynamics of endocytic trafficking. Compared with the control cells, the velocity of directed motion was reduced by 30% due to the suppression of high speed movements of EGF-QDs along the microtubules in PTX-treated cells. The endocytic trafficking in PTX-treated cells was mainly via super-diffusive mode of motion, whereas in control cells, it was mostly via sub-diffusive mode of motion. Moreover, PTX shortened endosomal trafficking and prevented EGF-QDs from moving to the perinuclear area via the rapid delivery of EGF-QDs into the peripheral lysosomes. The present study may shed light on the mechanism of the effect of PTX on the treatment of lung cancer.
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Affiliation(s)
- Hui Li
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Zhao-Wen Duan
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Ping Xie
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Yu-Ru Liu
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Wei-Chi Wang
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Shuo-Xing Dou
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Peng-Ye Wang
- Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
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50
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Ivanova JL, Edelweiss EF, Leonova OG, Balandin TG, Popenko VI, Deyev SM. Application of fusion protein 4D5 scFv-dibarnase:barstar-gold complex for studying P185HER2 receptor distribution in human cancer cells. Biochimie 2012; 94:1833-6. [PMID: 22531627 DOI: 10.1016/j.biochi.2012.04.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Accepted: 04/06/2012] [Indexed: 10/28/2022]
Abstract
Overexpression of the P185(HER2) protein determines the malignancy and unfavorable prognosis of ovarian and breast tumors. In this work, the distribution of P185(HER2) in human cancer cells was studied by electron microscopy, using a novel approach. It is based on the interaction between barnase (a ribonuclease from Bacillus amyloliquefaciens) and its specific inhibitor barstar. The monoclonal antibody 4D5 scFv to extracellular P185(HER2) domain fused with two molecules of barnase was used as a recognizing agent, and the conjugate of colloidal gold with barstar, as an electron dense label for electron microscopic visualization. For labeling, we used supramolecular complexes 4D5 scFv-dibarnase:barstar-Au. The distribution of P185(HER2) in human ovarian carcinoma cells SKOV-3 and breast carcinoma cells BT-474 was studied at 4 °C and 37 °C. It was shown that at 4 °C the protein P185(HER2) occurs exclusively on the cell surface, mainly on protrusions or close to their bases. At 37 °C, the internalization of P185(HER2) caused by its interaction with 4D5 scFv-dibarnase was observed. Inside the cells, P185(HER2) was located in the coated pits and vesicles, endosomes and multivesicular bodies. The data obtained indicate that the supramolecular 4D5 scFv-dibarnase:barstar-gold complex can be used as a new immunodetection system for exploring the P185(HER2) distribution.
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Affiliation(s)
- Julia L Ivanova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov str.32, 119991 Moscow, Russia.
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