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Conserved roles for receptor tyrosine kinase extracellular regions in regulating receptor and pathway activity. Biochem J 2020; 477:4207-4220. [PMID: 33043983 DOI: 10.1042/bcj20200702] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 11/17/2022]
Abstract
Receptor Tyrosine Kinases (RTKs) comprise a diverse group of cell-surface receptors that mediate key signaling events during animal development and are frequently activated in cancer. We show here that deletion of the extracellular regions of 10 RTKs representing 7 RTK classes or their substitution with the dimeric immunoglobulin Fc region results in constitutive receptor phosphorylation but fails to result in phosphorylation of downstream signaling effectors Erk or Akt. Conversely, substitution of RTK extracellular regions with the extracellular region of the Epidermal Growth Factor Receptor (EGFR) results in increases in effector phosphorylation in response to EGF. These results indicate that the activation signal generated by the EGFR extracellular region is capable of activating at least seven different RTK classes. Failure of phosphorylated Fc-RTK chimeras or RTKs with deleted extracellular regions to stimulate phosphorylation of downstream effectors indicates that either dimerization and receptor phosphorylation per se are insufficient to activate signaling or constitutive dimerization leads to pathway inhibition.
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52
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Keretsu S, Ghosh S, Cho SJ. Molecular Modeling Study of c-KIT/PDGFRα Dual Inhibitors for the Treatment of Gastrointestinal Stromal Tumors. Int J Mol Sci 2020; 21:ijms21218232. [PMID: 33153146 PMCID: PMC7662224 DOI: 10.3390/ijms21218232] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/26/2020] [Accepted: 10/30/2020] [Indexed: 02/06/2023] Open
Abstract
Gastrointestinal stromal tumors (GISTs) are the most common Mesenchymal Neoplasm of the gastrointestinal tract. The tumorigenesis of GISTs has been associated with the gain-of-function mutation and abnormal activation of the stem cell factor receptor (c-KIT) and platelet-derived growth factor receptor alpha (PDGFRα) kinases. Hence, inhibitors that target c-KIT and PDGFRα could be a therapeutic option for the treatment of GISTs. The available approved c-KIT/PDGFRα inhibitors possessed low efficacy with off-target effects, which necessitated the development of potent inhibitors. We performed computational studies of 48 pyrazolopyridine derivatives that showed inhibitory activity against c-KIT and PDGFRα to study the structural properties important for inhibition of both the kinases. The derivative of phenylurea, which has high activities for both c-KIT (pIC50 = 8.6) and PDGFRα (pIC50 = 8.1), was used as the representative compound for the dataset. Molecular docking and molecular dynamics simulation (100 ns) of compound 14 was performed. Compound 14 showed the formation of hydrogen bonding with Cys673, Glu640, and Asp810 in c-KIT, and Cys677, Glu644, and Asp836 in PDGFRα. The results also suggested that Thr670/T674 substitution in c-KIT/PDGFRα induced conformational changes at the binding site of the receptors. Three-dimensional quantitative structure-activity relationship (3D-QSAR) models were developed based on the inhibitors. Contour map analysis showed that electropositive and bulky substituents at the para-position and the meta-position of the benzyl ring of compound 14 was favorable and may increase the inhibitory activity against both c-KIT and PDGFRα. Analysis of the results suggested that having bulky and hydrophobic substituents that extend into the hydrophobic pocket of the binding site increases the activity for both c-KIT and PDGFRα. Based on the contour map analysis, 50 compounds were designed, and the activities were predicted. An evaluation of binding free energy showed that eight of the designed compounds have potential binding affinity with c-KIT/PDGFRα. Absorption, distribution, metabolism, excretion and toxicity (ADMET) and synthetic feasibility tests showed that the designed compounds have reasonable pharmaceutical properties and synthetic feasibility. Further experimental study of the designed compounds is recommended. The structural information from this study could provide useful insight into the future development of c-KIT and PDGFRα inhibitors.
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Affiliation(s)
- Seketoulie Keretsu
- Department of Biomedical Sciences, College of Medicine, Chosun University, Gwangju 501-759, Korea; (S.K.); (S.G.)
| | - Suparna Ghosh
- Department of Biomedical Sciences, College of Medicine, Chosun University, Gwangju 501-759, Korea; (S.K.); (S.G.)
| | - Seung Joo Cho
- Department of Biomedical Sciences, College of Medicine, Chosun University, Gwangju 501-759, Korea; (S.K.); (S.G.)
- Department of Cellular Molecular Medicine, College of Medicine, Chosun University, Gwangju 501-759, Korea
- Correspondence: ; Tel.: +82-62-230-7482 or +82-11-479-1010
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Li K, Liu CJ, Zhang XZ. Multifunctional peptides for tumor therapy. Adv Drug Deliv Rev 2020; 160:36-51. [PMID: 33080257 DOI: 10.1016/j.addr.2020.10.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/14/2020] [Accepted: 10/16/2020] [Indexed: 12/12/2022]
Abstract
Controlled nano-systems for drug delivery are designed to deliver therapeutical drugs to desirable sites on demand. Due to the diverse physiological functions of peptides, it is reasonable to introduce peptides into anti-tumor nano-system. The integration of peptides into nanomaterials has complementary advantages, which not only avoids the rapid degradation of peptides in vivo, but also improves the intelligence and functionality of the nano-system. We summarized the functional peptides with targeting and stimulus-responsive properties, and the present review outlined the most relevant and recent developed peptide-based multifunctional nanomaterials for tumor therapy.
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54
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Uprety D, Adjei AA. KRAS: From undruggable to a druggable Cancer Target. Cancer Treat Rev 2020; 89:102070. [DOI: 10.1016/j.ctrv.2020.102070] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/04/2020] [Accepted: 07/06/2020] [Indexed: 02/07/2023]
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Gas6 Induces Myelination through Anti-Inflammatory IL-10 and TGF-β Upregulation in White Matter and Glia. Cells 2020; 9:cells9081779. [PMID: 32722558 PMCID: PMC7465828 DOI: 10.3390/cells9081779] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/16/2020] [Accepted: 07/24/2020] [Indexed: 02/07/2023] Open
Abstract
The Gas6–TAM (Tyro3, Axl, Mer) ligand–receptor system is believed to promote central nervous system (CNS) (re)myelination and glial cell development. An additional important function of Gas6–TAM signalling appears to be the regulation of immunity and inflammation, which remains to be fully elucidated in the CNS. Here, we characterised the expression of TAM receptors and ligands in individual CNS glial cell types, observing high expression of Gas6 and the TAM receptors, Mer and Axl, in microglia, and high expression of Tyro3 in astrocytes. We also investigated the effect of Gas6 on the inflammatory cytokine response in the optic nerve and in mixed glial cell cultures from wildtype and single TAM receptor knockout mice. In wildtype and Mer-deficient cultures, Gas6 significantly stimulated the expression of the anti-inflammatory/pro-repair cytokines interleukin 10 (IL-10) and transforming growth factor β (TGF-β), whereas this effect was absent in either Tyro3 or Axl knockout cultures. Furthermore, Gas6 caused upregulation of myelin basic protein (MBP) expression in optic nerves, which was blocked by a neutralising antibody against IL-10. In conclusion, our data show that microglia are both a major source of Gas6 as well as an effector of Gas6 action in the CNS through the upregulation of anti-inflammatory and pro-repair mediators. Furthermore, the presence of both Axl and Tyro3 receptors appears to be necessary for these effects of Gas6. In addition, IL-10, alongside suppressing inflammation and immunity, mediates the pro-myelinating mechanism of Gas6 action in the optic nerve. Therefore, Gas6 may present an attractive target for novel therapeutic interventions for demyelinating as well as neuroinflammatory disorders of the CNS.
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56
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Piccirillo MC, Avallone A, Carlomagno C, Maiello E, Rosati G, Alabiso O, Nasti G, De Placido S, Latiano TP, Bilancia D, Ottaiano A, De Stefano A, Romano C, Silvestro L, Nappi A, Cassata A, Giordano P, Iaffaioli RV, Normanno N, Perrone F, Daniele B. Multicenter Single-Arm, Two-Stage Phase 2 Study of Panitumumab in Patients With Cetuximab-Refractory Metastatic Colorectal Cancer: The PACER Trial. Clin Colorectal Cancer 2020; 19:270-276. [PMID: 32631788 DOI: 10.1016/j.clcc.2020.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 01/23/2020] [Accepted: 05/22/2020] [Indexed: 11/26/2022]
Abstract
PURPOSE To assess whether panitumumab is active in patients with cetuximab-refractory metastatic colorectal cancer (mCRC). PATIENTS AND METHODS Eligible patients had pretreated RAS (renin-angiotensin system) wild-type mCRC that progressed after cetuximab treatment, after having shown either objective response or stable disease. A minimax two-stage design was applied, with progression-free rate at 2 months as the primary end point. At least 12 of 28 and 21 of 41 successes at the first and second stage, respectively, were required for a positive result. Panitumumab 6 mg/kg was provided every 2 weeks, until progression or unacceptable toxicity. RESULTS Overall, 52 patients with KRAS (Kirsten rat sarcoma viral oncogene) wild-type disease were enrolled, but 11 were found to have mutated disease after all-RAS retesting. Among 41 eligible patients, median time since diagnosis was 38 months, and 71% experienced an objective response to previous cetuximab. First stage was passed with 12 of 28 patients alive without progression at 2 months. At the second stage, 17 of 41 patients were alive without progression at 2 months. At a median follow-up of 21.8 months, 35 patients experienced disease progression, and 26 died. Median progression-free survival was 2.1 months (95% confidence interval, 1.8-3.6) and median overall survival 6.8 months (95% confidence interval, 4.6-16.6). Most of the patients experienced no adverse reactions; 25% of patients had grade 3 rash. CONCLUSION According to our study design, panitumumab was not effective in patients with cetuximab-refractory RAS wild-type mCRC.
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Affiliation(s)
- Maria Carmela Piccirillo
- Unità Sperimentazioni Cliniche, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
| | - Antonio Avallone
- Oncologia Clinica Sperimentale Addome, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
| | - Chiara Carlomagno
- Dipartimento di Medicina Clinica e Chirurgia, Università Federico II, Napoli, Italy
| | - Evaristo Maiello
- Oncologia Medica, IRCCS, Casa Sollievo Sofferenza, S. Giovanni Rotondo (FG), Italy
| | | | | | - Guglielmo Nasti
- Oncologia Clinica Sperimentale Addome, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
| | - Sabino De Placido
- Dipartimento di Medicina Clinica e Chirurgia, Università Federico II, Napoli, Italy
| | - Tizana Pia Latiano
- Oncologia Medica, IRCCS, Casa Sollievo Sofferenza, S. Giovanni Rotondo (FG), Italy
| | | | - Alessandro Ottaiano
- Oncologia Clinica Sperimentale Addome, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
| | - Alfonso De Stefano
- Oncologia Clinica Sperimentale Addome, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
| | - Carmela Romano
- Oncologia Clinica Sperimentale Addome, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
| | - Lucrezia Silvestro
- Oncologia Clinica Sperimentale Addome, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
| | - Anna Nappi
- Oncologia Clinica Sperimentale Addome, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
| | - Antonino Cassata
- Oncologia Clinica Sperimentale Addome, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
| | | | - Rosario Vincenzo Iaffaioli
- Oncologia Clinica Sperimentale Addome, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
| | - Nicola Normanno
- Biologia Cellulare e Bioterapie, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
| | - Francesco Perrone
- Unità Sperimentazioni Cliniche, Istituto Nazionale Tumori, IRCCS, Fondazione G. Pascale, Napoli, Italy
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Tang FHF, Davis D, Arap W, Pasqualini R, Staquicini FI. Eph receptors as cancer targets for antibody-based therapy. Adv Cancer Res 2020; 147:303-317. [PMID: 32593404 DOI: 10.1016/bs.acr.2020.04.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Receptor tyrosine kinases (RTKs) are integral membrane sensors that govern cell differentiation, proliferation and mobility, and enable rapid communication between cells and their environment. Of the 20 RTK subfamilies currently known, Eph receptors are the largest group. Together with their corresponding ephrin ligands, Eph receptors regulate a diverse array of physiologic processes including axonal guidance, bone remodeling, and immune cell development and trafficking. Deregulation of Eph signaling pathways is linked to cancer and other proliferative diseases and, because RTKs play critical roles in cancer development, the specific targeting of these molecules in malignancies provides a promising treatment approach. Monoclonal antibodies targeting RTKs represent a potentially attractive modality for pharmaceutical development due to their relatively high target specificity and low off-target binding rates. Therefore, new technologies to generate antibodies able to target RTKs in their native in vivo context are likely to facilitate pre-clinical and clinical development of antibody-based therapies. Our group has recently reported a platform discovery methodology termed Selection of Phage-displayed Accessible Recombinant Targeted Antibodies (SPARTA). SPARTA is a novel and robust stepwise method, which combines the attributes of in vitro screenings of a naïve human recombinant antibody library against known tumor targets with those features of in vivo selections based on tumor-homing capabilities of a pre-enriched antibody pool. This unique approach overcomes several rate-limiting challenges to generate human monoclonal antibodies amenable to rapid translation into medical applications.
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Affiliation(s)
- Fenny H F Tang
- Rutgers Cancer Institute of New Jersey, Newark, NJ, United States; Division of Cancer Biology, Department of Radiation Oncology, Rutgers New Jersey Medical School, Newark, NJ, United States
| | - Deodate Davis
- Rutgers Cancer Institute of New Jersey, Newark, NJ, United States; Division of Cancer Biology, Department of Radiation Oncology, Rutgers New Jersey Medical School, Newark, NJ, United States
| | - Wadih Arap
- Rutgers Cancer Institute of New Jersey, Newark, NJ, United States; Division of Hematology/Oncology, Department of Medicine, Rutgers New Jersey Medical School, Newark, NJ, United States.
| | - Renata Pasqualini
- Rutgers Cancer Institute of New Jersey, Newark, NJ, United States; Division of Cancer Biology, Department of Radiation Oncology, Rutgers New Jersey Medical School, Newark, NJ, United States.
| | - Fernanda I Staquicini
- Rutgers Cancer Institute of New Jersey, Newark, NJ, United States; Division of Cancer Biology, Department of Radiation Oncology, Rutgers New Jersey Medical School, Newark, NJ, United States.
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58
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Ignasiak M, Frackowiak K, Pedzinski T, Davies MJ, Marciniak B. Unexpected light emission from tyrosyl radicals as a probe for tyrosine oxidation. Free Radic Biol Med 2020; 153:12-16. [PMID: 32304751 DOI: 10.1016/j.freeradbiomed.2020.03.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/05/2020] [Accepted: 03/23/2020] [Indexed: 12/29/2022]
Abstract
Tyrosine residues (Tyr) on proteins are a favoured site of one-electron oxidation due to their low one-electron reduction potentials. In this work, light-induced oxidation of Tyr residues was investigated using direct ionisation (via 266 nm light excitation) and sensitized photo-oxidation (by 3-carboxybenzophenone as sensitizer and 355 nm). Light emission (fluorescence) was observed at 410-440 nm as a result of Tyr oxidation. This novel light emission process is shown to be dependent on the solvent and aromatic ring substituents, however it does not depend on pH. It is proposed, that after initial formation of tyrosine phenoxyl radicals (TyrO●) by one electron-oxidation, the TyrO● absorbs a second photon to give an excited state species that undergoes subsequent light emission. The intensity of this emission depends on the Tyr concentration, and the detection of this emission can be used to identify and quantify one-electron formation of oxidized Tyr residues on proteins.
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Affiliation(s)
- Marta Ignasiak
- Faculty of Chemistry, Adam Mickiewicz University, and Center for Advanced Technology, Poznan, Poland.
| | - Kamil Frackowiak
- Faculty of Chemistry, Adam Mickiewicz University, and Center for Advanced Technology, Poznan, Poland
| | - Tomasz Pedzinski
- Faculty of Chemistry, Adam Mickiewicz University, and Center for Advanced Technology, Poznan, Poland
| | - Michael J Davies
- Dept. of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Bronisław Marciniak
- Faculty of Chemistry, Adam Mickiewicz University, and Center for Advanced Technology, Poznan, Poland
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59
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Phosphoprotein Biosensors for Monitoring Pathological Protein Structural Changes. Trends Biotechnol 2020; 38:519-531. [DOI: 10.1016/j.tibtech.2019.11.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 11/15/2019] [Accepted: 11/15/2019] [Indexed: 12/19/2022]
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60
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Shi L, Peng P, Zheng J, Wang Q, Tian Z, Wang H, Li T. I-Motif/miniduplex hybrid structures bind benzothiazole dyes with unprecedented efficiencies: a generic light-up system for label-free DNA nanoassemblies and bioimaging. Nucleic Acids Res 2020; 48:1681-1690. [PMID: 31950160 PMCID: PMC7039006 DOI: 10.1093/nar/gkaa020] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/17/2019] [Accepted: 01/06/2020] [Indexed: 12/21/2022] Open
Abstract
I-motif DNAs have been widely employed as robust modulating components to construct reconfigurable DNA nanodevices that function well in acidic cellular environments. However, they generally display poor interactivity with fluorescent ligands under these complex conditions, illustrating a major difficulty in utilizing i-motifs as the light-up system for label-free DNA nanoassemblies and bioimaging. Towards addressing this challenge, here we devise new types of i-motif/miniduplex hybrid structures that display an unprecedentedly high interactivity with commonly-used benzothiazole dyes (e.g. thioflavin T). A well-chosen tetranucleotide, whose optimal sequence depends on the used ligand, is appended to the 5′-terminals of diverse i-motifs and forms a minimal parallel duplex thereby creating a preferential site for binding ligands, verified by molecular dynamics simulation. In this way, the fluorescence of ligands can be dramatically enhanced by the i-motif/miniduplex hybrids under complex physiological conditions. This provides a generic light-up system with a high signal-to-background ratio for programmable DNA nanoassemblies, illustrated through utilizing it for a pH-driven framework nucleic acid nanodevice manipulated in acidic cellular membrane microenvironments. It enables label-free fluorescence bioimaging in response to extracellular pH change.
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Affiliation(s)
- Lili Shi
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Pai Peng
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Jiao Zheng
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Qiwei Wang
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Zhijin Tian
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Huihui Wang
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Tao Li
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
- To whom correspondence should be addressed. Tel: +86 551 63601813;
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61
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Qi J, Li W, Xu X, Jin F, Liu D, Du Y, Wang J, Ying X, You J, Du Y, Ji J. Cyto-friendly polymerization at cell surfaces modulates cell fate by clustering cell-surface receptors. Chem Sci 2020; 11:4221-4225. [PMID: 34122885 PMCID: PMC8152676 DOI: 10.1039/c9sc06385d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Lots of strategies, e.g. using multivalent synthetic polymers, have been developed to control the spatial distribution of cell-surface receptors, thus modulating the cell function and fate in a custom-tailored manner. However, clustering cell-surface receptors via multivalent synthetic polymers is highly dependent on the structure as well as the ligand-density of the polymers, which may impose difficulties on the synthesis of polymers with a high density of ligands. Here, we pioneered the utilization of a cyto-friendly polymerization at the cell surface to cluster cell-surface receptors. As a proof of concept, an anti-CD20 aptamer conjugated macromer was initially synthesized, which was then efficiently and stably introduced onto the Raji cell surface via ligand–receptor interaction. With the assistance of an initiator, i.e. ammonium peroxysulfate (APS), the macromer bound onto the Raji cell surface polymerized, inducing the clustering of CD20 receptors, and thereby triggering cell apoptosis. This cell-surface polymerization induced cell-surface receptor crosslinking could alternatively be applied in modulating the fates and functions of other cells, especially those mediated by the spatial distribution of cell-surface receptors, such as T cell activation. Our work opens new possibilities in the area of chemical biology to some extent. Cell-surface polymerization of anti-CD20 aptamer modified macromer to induce CD20 receptor clustering, and effectively initiate the apoptotic signals in cells.![]()
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Affiliation(s)
- Jing Qi
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 China
| | - Weishuo Li
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 China .,State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University Nanjing 210009 China
| | - Xiaoling Xu
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 China
| | - Feiyang Jin
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 China
| | - Di Liu
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 China
| | - Yan Du
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 China
| | - Jun Wang
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 China
| | - Xiaoying Ying
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 China
| | - Jian You
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 China
| | - Yongzhong Du
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University Hangzhou 310058 China
| | - Jiansong Ji
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University Lishui 323000 China
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Sarkar S, García AE. Presence or Absence of Ras Dimerization Shows Distinct Kinetic Signature in Ras-Raf Interaction. Biophys J 2020; 118:1799-1810. [PMID: 32199071 DOI: 10.1016/j.bpj.2020.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 12/30/2019] [Accepted: 03/02/2020] [Indexed: 02/07/2023] Open
Abstract
Initiations of cell signaling pathways often occur through the formation of multiprotein complexes that form through protein-protein interactions. Therefore, detecting their presence is central to understanding the function of a cell signaling pathway, aberration of which often leads to fatal diseases, including cancers. However, the multiprotein complexes are often difficult to detect using microscopes due to their small sizes. Therefore, currently, their presence can be only detected through indirect means. In this article, we propose to investigate the presence or absence of protein complexes through some easily measurable kinetic parameters, such as activation rates. As a proof of concept, we investigate the Ras-Raf system, a well-characterized cell signaling system. It has been hypothesized that Ras dimerization is necessary to create activated Raf dimers. Although there are circumstantial evidences supporting the Ras dimerization hypothesis, direct proof of Ras dimerization is still inconclusive. In the absence of conclusive direct experimental proof, this hypothesis can only be examined through indirect evidences of Ras dimerization. In this article, using a multiscale simulation technique, we provide multiple criteria that distinguishes an activation mechanism involving Ras dimerization from another mechanism that does not involve Ras dimerization. The provided criteria will be useful in the investigation of not only Ras-Raf interaction but also other two-protein interactions.
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Affiliation(s)
- Sumantra Sarkar
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico
| | - Angel E García
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico.
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Sellmer A, Pilsl B, Beyer M, Pongratz H, Wirth L, Elz S, Dove S, Henninger SJ, Spiekermann K, Polzer H, Klaeger S, Kuster B, Böhmer FD, Fiebig HH, Krämer OH, Mahboobi S. A series of novel aryl-methanone derivatives as inhibitors of FMS-like tyrosine kinase 3 (FLT3) in FLT3-ITD-positive acute myeloid leukemia. Eur J Med Chem 2020; 193:112232. [PMID: 32199135 DOI: 10.1016/j.ejmech.2020.112232] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 02/06/2023]
Abstract
Mutants of the FLT3 receptor tyrosine kinase (RTK) with duplications in the juxtamembrane domain (FLT3-ITD) act as drivers of acute myeloid leukemia (AML). Potent tyrosine kinase inhibitors (TKi) of FLT3-ITD entered clinical trials and showed a promising, but transient success due to the occurrence of secondary drug-resistant AML clones. A further caveat of drugs targeting FLT3-ITD is the co-targeting of other RTKs which are required for normal hematopoiesis. This is observed quite frequently. Therefore, novel drugs are necessary to treat AML effectively and safely. Recently bis(1H-indol-2-yl)methanones were found to inhibit FLT3 and PDGFR kinases. In order to optimize these agents we synthesized novel derivatives of these methanones with various substituents. Methanone 16 and its carbamate derivative 17b inhibit FLT3-ITD at least as potently as the TKi AC220 (quizartinib). Models indicate corresponding interactions of 16 and quizartinib with FLT3. The activity of 16 is accompanied by a high selectivity for FLT3-ITD.
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Affiliation(s)
- Andreas Sellmer
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Bernadette Pilsl
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Mandy Beyer
- Department of Toxicology, University Medical Center, Mainz, Germany
| | - Herwig Pongratz
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Lukas Wirth
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Sigurd Elz
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Stefan Dove
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | | | | | - Harald Polzer
- Department of Medicine III, University Hospital, LMU Munich, Germany
| | - Susan Klaeger
- Technische Universität München, Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt, Germany
| | - Bernhard Kuster
- Technische Universität München, Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt, Germany
| | - Frank D Böhmer
- Universitätsklinikum Jena - Bachstrasse 18 - D-07743 Jena, Germany
| | | | - Oliver H Krämer
- Department of Toxicology, University Medical Center, Mainz, Germany
| | - Siavosh Mahboobi
- Institute of Pharmacy, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany.
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Synthesis and Characterization of Arsenic(III) Oxide Nanoparticles as Potent Inhibitors of MCF 7 Cell Proliferation through Proapoptotic Mechanism. BIONANOSCIENCE 2020. [DOI: 10.1007/s12668-020-00726-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Triaca V, Fico E, Sposato V, Caioli S, Ciotti MT, Zona C, Mercanti D, La Mendola D, Satriano C, Rizzarelli E, Tirassa P, Calissano P. hNGF Peptides Elicit the NGF-TrkA Signalling Pathway in Cholinergic Neurons and Retain Full Neurotrophic Activity in the DRG Assay. Biomolecules 2020; 10:biom10020216. [PMID: 32024191 PMCID: PMC7072391 DOI: 10.3390/biom10020216] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/22/2020] [Accepted: 01/26/2020] [Indexed: 12/18/2022] Open
Abstract
In the last decade, Nerve Growth Factor (NGF)-based clinical approaches have lacked specific and efficient Tyrosine Kinase A (TrkA) agonists for brain delivery. Nowadays, the characterization of novel small peptidomimetic is taking centre stage in preclinical studies, in order to overcome the main size-related limitation in brain delivery of NGF holoprotein for Central Nervous System (CNS) pathologies. Here we investigated the NGF mimetic properties of the human NGF 1–14 sequence (hNGF1–14) and its derivatives, by resorting to primary cholinergic and dorsal root ganglia (DRG) neurons. Briefly, we observed that: 1) hNGF1–14 peptides engage the NGF pathway through TrkA phosphorylation at tyrosine 490 (Y490), and activation of ShcC/PI3K and Plc-γ/MAPK signalling, promoting AKT-dependent survival and CREB-driven neuronal activity, as seen by levels of the immediate early gene c-Fos, of the cholinergic marker Choline Acetyltransferase (ChAT), and of Brain Derived Neurotrophic Factor (BDNF); 2) their NGF mimetic activity is lost upon selective TrkA inhibition by means of GW441756; 3) hNGF1–14 peptides are able to sustain DRG survival and differentiation in absence of NGF. Furthermore, the acetylated derivative Ac-hNGF1–14 demonstrated an optimal NGF mimetic activity in both neuronal paradigms and an electrophysiological profile similar to NGF in cholinergic neurons. Cumulatively, the findings here reported pinpoint the hNGF1–14 peptide, and in particular its acetylated derivative, as novel, specific and low molecular weight TrkA specific agonists in both CNS and PNS primary neurons.
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Affiliation(s)
- Viviana Triaca
- Institute of Biochemistry and Cell Biology, National Research Council (CNR-IBBC), International Campus A. Buzzati Traverso, Via E. Ramarini 32, Monterotondo, 00015 Rome, Italy
- Correspondence: ; Tel.: +39-06-90091357
| | - Elena Fico
- Institute of Biochemistry and Cell Biology, National Research Council (CNR-IBBC), at Department of Sense Organs, University of Rome “ La Sapienza”, Viale del Policlinico 155, 00161 Rome, Italy; (E.F.); (M.T.C.); (D.M.); (P.T.)
| | - Valentina Sposato
- European Brain Research Institute (EBRI Foundation), Viale Regina Elena 295, 00161 Rome, Italy; (V.S.); (P.C.)
| | - Silvia Caioli
- IRCCS S. Lucia Foundation, Via del Fosso di Fiorano 64, 00143 Rome, Italy; (S.C.); (C.Z.)
| | - Maria Teresa Ciotti
- Institute of Biochemistry and Cell Biology, National Research Council (CNR-IBBC), at Department of Sense Organs, University of Rome “ La Sapienza”, Viale del Policlinico 155, 00161 Rome, Italy; (E.F.); (M.T.C.); (D.M.); (P.T.)
| | - Cristina Zona
- IRCCS S. Lucia Foundation, Via del Fosso di Fiorano 64, 00143 Rome, Italy; (S.C.); (C.Z.)
- Department of Systems Medicine, University of Rome “TorVergata”, Via Montpellier 1, 00133 Rome, Italy
| | - Delio Mercanti
- Institute of Biochemistry and Cell Biology, National Research Council (CNR-IBBC), at Department of Sense Organs, University of Rome “ La Sapienza”, Viale del Policlinico 155, 00161 Rome, Italy; (E.F.); (M.T.C.); (D.M.); (P.T.)
| | - Diego La Mendola
- Department of Pharmacy, University of Pisa, via Bonanno Pisano 6, 56126 Pisa, Italy;
| | - Cristina Satriano
- Department of Chemical Sciences, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy; (C.S.); (E.R.)
| | - Enrico Rizzarelli
- Department of Chemical Sciences, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy; (C.S.); (E.R.)
- Institute of Crystallography, National Research Council (CNR-IC), Via Paolo Gaifami 18, 95126 Catania, Italy
| | - Paola Tirassa
- Institute of Biochemistry and Cell Biology, National Research Council (CNR-IBBC), at Department of Sense Organs, University of Rome “ La Sapienza”, Viale del Policlinico 155, 00161 Rome, Italy; (E.F.); (M.T.C.); (D.M.); (P.T.)
| | - Pietro Calissano
- European Brain Research Institute (EBRI Foundation), Viale Regina Elena 295, 00161 Rome, Italy; (V.S.); (P.C.)
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66
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Li J, Wang L, Tian J, Zhou Z, Li J, Yang H. Nongenetic engineering strategies for regulating receptor oligomerization in living cells. Chem Soc Rev 2020; 49:1545-1568. [DOI: 10.1039/c9cs00473d] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nongenetic strategies for regulating receptor oligomerization in living cells based on DNA, protein, small molecules and physical stimuli.
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Affiliation(s)
- Jingying Li
- MOE Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
| | - Liping Wang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
| | - Jinmiao Tian
- Institute of Molecular Medicine
- Renji Hospital
- School of Medicine
- Shanghai Jiao Tong University
- Shanghai
| | - Zhilan Zhou
- Institute of Molecular Medicine
- Renji Hospital
- School of Medicine
- Shanghai Jiao Tong University
- Shanghai
| | - Juan Li
- MOE Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
| | - Huanghao Yang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
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Westerfield JM, Barrera FN. Membrane receptor activation mechanisms and transmembrane peptide tools to elucidate them. J Biol Chem 2019; 295:1792-1814. [PMID: 31879273 DOI: 10.1074/jbc.rev119.009457] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Single-pass membrane receptors contain extracellular domains that respond to external stimuli and transmit information to intracellular domains through a single transmembrane (TM) α-helix. Because membrane receptors have various roles in homeostasis, signaling malfunctions of these receptors can cause disease. Despite their importance, there is still much to be understood mechanistically about how single-pass receptors are activated. In general, single-pass receptors respond to extracellular stimuli via alterations in their oligomeric state. The details of this process are still the focus of intense study, and several lines of evidence indicate that the TM domain (TMD) of the receptor plays a central role. We discuss three major mechanistic hypotheses for receptor activation: ligand-induced dimerization, ligand-induced rotation, and receptor clustering. Recent observations suggest that receptors can use a combination of these activation mechanisms and that technical limitations can bias interpretation. Short peptides derived from receptor TMDs, which can be identified by screening or rationally developed on the basis of the structure or sequence of their targets, have provided critical insights into receptor function. Here, we explore recent evidence that, depending on the target receptor, TMD peptides cannot only inhibit but also activate target receptors and can accommodate novel, bifunctional designs. Furthermore, we call for more sharing of negative results to inform the TMD peptide field, which is rapidly transforming into a suite of unique tools with the potential for future therapeutics.
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Affiliation(s)
- Justin M Westerfield
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, Tennessee 37996
| | - Francisco N Barrera
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, Tennessee 37996.
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Mechanistic basis of co-stimulatory CD40-CD40L ligation mediated regulation of immune responses in cancer and autoimmune disorders. Immunobiology 2019; 225:151899. [PMID: 31899051 DOI: 10.1016/j.imbio.2019.151899] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 12/12/2019] [Accepted: 12/14/2019] [Indexed: 02/08/2023]
Abstract
Generation of an accurate humoral and a cell mediated adaptive immune responsesare dictated by binding of an antigen to a T- and a B-cell receptor, respectively (first signal) followed by ligation of costimulatory molecules (second signal). CD40, a costimulatory receptor molecule, expressed mainly on antigen presenting cells, some non-immune cells and tumors, binds to CD40 ligand molecule expressed transiently on T-cells and non-immune cells under inflammatory conditions. In the past decade, the CD40-CD40L interaction has emerged as an immune-potentiating system that governs and regulates host immune response against various diseases and pathogens, failing of which results in detrimental patho-physiologies including cancer and autoimmune disorders. CD40-CD40L transduces immune signals intracellularly via TRAF-dependent and independent mechanisms and further downstream by different MAPK pathways and transcription factors such as NF-κB, p38 etc. While CD40 signaling pathway through its cognate interaction between B and T cells promotes activation and proliferation of B-cells, Ig class switching, and generation of B cell memory; however, CD40-CD40L interaction involving other APCs and non-immune cells relay distinct cell signaling resulting in production of a variety of cytokines/chemokines and cell adhesion molecules ultimately conferring host defense against pathogen. In cancer and autoimmune disorders, CD40-CD40L interaction is also responsible for aberrant expression of many disease specific markers, class I/II MHC molecules and other co-stimulatory molecules such as B7 and CD28 in cell- and disease-specific manner. In the present review, the current state of understanding about the CD40-CD40L mediated regulation of immune and non-immune cells is presented. The current paradigm is to target CD40 using agonist anti-CD40 mAbs alone or in synergistic combination with chemotherapy in order to harness or confer anti-tumor and anti-inflammatory immunity.
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Vacchini M, Edwards R, Guizzardi R, Palmioli A, Ciaramelli C, Paiotta A, Airoldi C, La Ferla B, Cipolla L. Glycan Carriers As Glycotools for Medicinal Chemistry Applications. Curr Med Chem 2019; 26:6349-6398. [DOI: 10.2174/0929867326666190104164653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 11/07/2018] [Accepted: 12/18/2018] [Indexed: 12/12/2022]
Abstract
Carbohydrates are one of the most powerful and versatile classes of biomolecules that nature
uses to regulate organisms’ biochemistry, modulating plenty of signaling events within cells, triggering
a plethora of physiological and pathological cellular behaviors. In this framework, glycan carrier
systems or carbohydrate-decorated materials constitute interesting and relevant tools for medicinal
chemistry applications. In the last few decades, efforts have been focused, among others, on the development
of multivalent glycoconjugates, biosensors, glycoarrays, carbohydrate-decorated biomaterials
for regenerative medicine, and glyconanoparticles. This review aims to provide the reader with a general
overview of the different carbohydrate carrier systems that have been developed as tools in different
medicinal chemistry approaches relying on carbohydrate-protein interactions. Given the extent of
this topic, the present review will focus on selected examples that highlight the advancements and potentialities
offered by this specific area of research, rather than being an exhaustive literature survey of
any specific glyco-functionalized system.
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Affiliation(s)
- Mattia Vacchini
- Department of Biotechnology and Biosciences, University of Milano-Bicocca Milano, Italy
| | - Rana Edwards
- Department of Biotechnology and Biosciences, University of Milano-Bicocca Milano, Italy
| | - Roberto Guizzardi
- Department of Biotechnology and Biosciences, University of Milano-Bicocca Milano, Italy
| | - Alessandro Palmioli
- Department of Biotechnology and Biosciences, University of Milano-Bicocca Milano, Italy
| | - Carlotta Ciaramelli
- Department of Biotechnology and Biosciences, University of Milano-Bicocca Milano, Italy
| | - Alice Paiotta
- Department of Biotechnology and Biosciences, University of Milano-Bicocca Milano, Italy
| | - Cristina Airoldi
- Department of Biotechnology and Biosciences, University of Milano-Bicocca Milano, Italy
| | - Barbara La Ferla
- Department of Biotechnology and Biosciences, University of Milano-Bicocca Milano, Italy
| | - Laura Cipolla
- Department of Biotechnology and Biosciences, University of Milano-Bicocca Milano, Italy
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Yang PW, Liu YC, Chang YH, Lin CC, Huang PM, Hua KT, Lee JM, Hsieh MS. Cabozantinib (XL184) and R428 (BGB324) Inhibit the Growth of Esophageal Squamous Cell Carcinoma (ESCC). Front Oncol 2019; 9:1138. [PMID: 31781483 PMCID: PMC6851194 DOI: 10.3389/fonc.2019.01138] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 10/11/2019] [Indexed: 12/18/2022] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is a deadly disease for which no effective targeted therapeutic agent has been approved. Both AXL and c-MET have been reported to be independent prognostic factors for ESCC. Thus, inhibitors of AXL/c-MET might have great potential as targeted therapy for ESCC. In the current study, we evaluated the therapeutic potential of the AXL/c-MET selective inhibitors, R428 and cabozantinib, in cell and mouse xenograft models. We demonstrated that both R428 and cabozantinib significantly inhibited the growth of CE81T and KYSE-70 ESCC cells and showed by wound-healing assay that they both inhibited ESCC cell migration. In the animal model, ESCC xenograft models were established by injecting KYSE-70 cells with Matrigel into the upper back region of NOD-SCID male mice followed by treatment with vehicle control, R428 (50 mg/kg/day), cisplatin (1.0 mg/kg), or cabozantinib (30 mg/kg/day) for the indicated number of days. R428 alone significantly inhibited ESCC tumor growth compared to the vehicle; however, no synergistic effect with cisplatin was observed. Notably, the dramatic efficacy of cabozantinib alone was observed in the mouse xenograft model. Collectively, our study demonstrated that both cabozantinib and R428 inhibit ESCC growth in cell and xenograft models. The results reveal the great potential of using cabozantinib for targeted therapy of ESCC.
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Affiliation(s)
- Pei-Wen Yang
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yu-Cheng Liu
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ya-Han Chang
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ching-Ching Lin
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Pei-Ming Huang
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Kuo-Tai Hua
- Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Jang-Ming Lee
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Min-Shu Hsieh
- Graduate Institute of Pathology, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Pathology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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Can single molecule localization microscopy detect nanoclusters in T cells? Curr Opin Chem Biol 2019; 51:130-137. [DOI: 10.1016/j.cbpa.2019.05.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 05/10/2019] [Accepted: 05/21/2019] [Indexed: 11/21/2022]
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Pant V, Yadav BK, Sharma J. A cross sectional study to assess the sFlt-1:PlGF ratio in pregnant women with and without preeclampsia. BMC Pregnancy Childbirth 2019; 19:266. [PMID: 31345176 PMCID: PMC6659302 DOI: 10.1186/s12884-019-2399-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 07/04/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Preeclampsia is a multisystem disorder characterized by vascular endothelial malfunction occurring after 20 weeks of gestation. Placental soluble fms-like tyrosine kinase-1 (sFlt-1) is an antiangiogenic factor and placental growth factor (PlGF) is a potent angiogenic factor. The imbalance between these factors during placenta and fetal development has been shown to play a role in endothelial damage in preeclampsia. Preeclampsia is the leading cause of maternal mortality in Nepal. This study was designed to compare the sFlt1:PLGF ratio in pregnant women with and without preeclampsia attending Tribhuvan University Teaching Hospital (TUTH). METHOD An observational cross-sectional study was performed in the Gynecology and Obstetrics Department of TUTH involving forty-four subjects with preeclampsia and forty-four age- and gestational-week-matched normal pregnant subjects as controls. Blood pressure, urinary protein levels, serum sFlt-1 levels, serum PlGF levels and the sFlt-1:PlGF ratio was compared in both the cases and control. The concentrations of sFlt-1 and PlGF were measured with commercially available ELISA kits. SPSS ver. 20.0 was used to analyze the data. RESULTS There was no significant difference in age or gestational age in either study group. The ratio of the sFlt-1 and PlGF concentrations was significantly higher in women with preeclampsia (31.6 ± 9.6) than in the controls (3.2 ± 1.3). Likewise, diastolic blood pressure was significantly associated (p-value 0.000), whereas the severity of proteinuria was not associated (p-value 0.773) with the sFlt-1:PlGF ratio in women with preeclampsia. The significantly higher ratio (35.51 ± 8.1 versus 25.4 ± 8.7) was found in women with preeclampsia who developed complications than the group of women with preeclampsia who did not develop complication. CONCLUSION The sFlt-1:PlGF ratio is significantly higher in Nepalese women with preeclampsia than in normal controls and this finding can be applied for further planned clinical trials.
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Affiliation(s)
- Vivek Pant
- Department of Clinical Biochemistry, Institute of Medicine, Tribhuvan University Teaching Hospital, Kathmandu, Nepal
| | - Binod Kumar Yadav
- Department of Clinical Biochemistry, Institute of Medicine, Tribhuvan University Teaching Hospital, Kathmandu, Nepal
| | - Jyoti Sharma
- Department of Gynecology and Obstetrics, Institute of Medicine, Tribhuvan University Teaching Hospital, Kathmandu, Nepal
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Antitumor Activity of a Novel Fibroblast Growth Factor Receptor Inhibitor for Intrahepatic Cholangiocarcinoma. THE AMERICAN JOURNAL OF PATHOLOGY 2019; 189:2090-2101. [PMID: 31351075 DOI: 10.1016/j.ajpath.2019.06.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 06/05/2019] [Accepted: 06/18/2019] [Indexed: 12/31/2022]
Abstract
Fibroblast growth factor receptor 2 (FGFR2) might have an important role in the pathogenesis and biology of cholangiocarcinoma (CCA). We examined FGFR expression in CCA tumor specimens obtained from patients and CCA cell lines, and then determined the effects of the novel FGFR inhibitor, derazantinib (DZB; formally, ARQ 087), which is currently in clinical phase 2 trials for intrahepatic CCA. DZB inhibited the growth of CCA cell lines in a dose-dependent manner, and extracellular signal-regulated kinase 1/2 and AKT. It also activated apoptotic and cell growth arrest signaling. DZB reduced the in vitro invasiveness and the expression of key epithelial-mesenchymal transition genes. The in vitro data correlated with the expression of FGFRs in human CCA specimens by immunohistochemistry (FGFR1, 30% positive; and FGFR2, 65% positive) and the CCA cell lines assayed by Western blot analysis. These correlated in vitro studies suggest that FGFR may play an important role in the pathogenesis and biology of CCA. Our findings support the notion that FGFR inhibitors, like DZB, should be further evaluated at the clinical stage as targeted therapy for CCA treatment.
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Baek M, Park T, Heo L, Park C, Seok C. GalaxyHomomer: a web server for protein homo-oligomer structure prediction from a monomer sequence or structure. Nucleic Acids Res 2019; 45:W320-W324. [PMID: 28387820 PMCID: PMC5570155 DOI: 10.1093/nar/gkx246] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 04/05/2017] [Indexed: 11/18/2022] Open
Abstract
Homo-oligomerization of proteins is abundant in nature, and is often intimately related with the physiological functions of proteins, such as in metabolism, signal transduction or immunity. Information on the homo-oligomer structure is therefore important to obtain a molecular-level understanding of protein functions and their regulation. Currently available web servers predict protein homo-oligomer structures either by template-based modeling using homo-oligomer templates selected from the protein structure database or by ab initio docking of monomer structures resolved by experiment or predicted by computation. The GalaxyHomomer server, freely accessible at http://galaxy.seoklab.org/homomer, carries out template-based modeling, ab initio docking or both depending on the availability of proper oligomer templates. It also incorporates recently developed model refinement methods that can consistently improve model quality. Moreover, the server provides additional options that can be chosen by the user depending on the availability of information on the monomer structure, oligomeric state and locations of unreliable/flexible loops or termini. The performance of the server was better than or comparable to that of other available methods when tested on benchmark sets and in a recent CASP performed in a blind fashion.
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Affiliation(s)
- Minkyung Baek
- Department of Chemistry, Seoul National University, Seoul 151-747, Korea
| | - Taeyong Park
- Department of Chemistry, Seoul National University, Seoul 151-747, Korea
| | - Lim Heo
- Department of Chemistry, Seoul National University, Seoul 151-747, Korea
| | - Chiwook Park
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN 47907, USA
| | - Chaok Seok
- Department of Chemistry, Seoul National University, Seoul 151-747, Korea
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Amplified fluorescence imaging of HER2 dimerization on cancer cells by using a co-localization triggered DNA nanoassembly. Mikrochim Acta 2019; 186:439. [PMID: 31197538 DOI: 10.1007/s00604-019-3549-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 05/24/2019] [Indexed: 12/18/2022]
Abstract
Convenient and sensitive detection of human epidermal growth factor receptor 2 (HER2) dimerization is highly desirable for molecule subtyping and guiding personalized HER2 targeted therapy of breast cancer. A colocalization-triggered DNA nanoassembly (CtDNA) strategy was developed for amplified imaging of HER2 dimerization. It exploits (a) the advantage of the specificity of aptamer proximity hybridization, and (b) the high sensitivity of hairpin-free nonlinear HCR. The mechanism of step-by-step hairpin-free nonlinear HCR for DNA dendritic nanoassembly was studied by native polyacrylamide gel electrophoresis, atomic force microscopy and fluorometry. The results revealed a high specificity, sensitivity, and excellent controllability of the DNA dendritic nanoassembly. The method was used to identify HER2 homodimers and HER2/HER3 heterodimers in various breast cancer cell lines using fluorescence microscopy. It was then extended to image and quantitatively evaluate HER2 homodimers in clinical formalin-fixed paraffin-embedded breast cancer tissue specimens. This revealed its remarkable accuracy and practicality for clinical diagnostics. Graphical abstract Schematic presentation of amplified imaging of human epidermal growth factor receptor 2 (HER2) dimerization on cancer cell surfaces by using a co-localization triggered DNA nanoassembly (CtDNA).
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Bing T, Shen L, Wang J, Wang L, Liu X, Zhang N, Xiao X, Shangguan D. Aptameric Probe Specifically Binding Protein Heterodimer Rather Than Monomers. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900143. [PMID: 31179220 PMCID: PMC6548965 DOI: 10.1002/advs.201900143] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/03/2019] [Indexed: 05/19/2023]
Abstract
Dimerization of proteins occurs frequently and plays integral roles in biological processes. However, no single molecular probe is available for in situ detection of protein dimers on cells and tissues because of the difficulty of isolating complete protein dimers for probe preparation and screening, which has greatly hampered the biomedical study of protein dimers. Herein, a G-rich DNA aptamer (termed BG2) that only binds alkaline phosphatase (AP) heterodimers rather than monomers is reported. This aptamer is generated by the cell-SELEX (systematic evolution of ligands by exponential enrichment) technique and proves to fold into a duplex stabilized antiparallel G-quadruplex structure. Using BG2 as molecular probe, AP heterodimers are found to be expressed on several kinds of cancer cells. As an affinity ligand, BG2 could isolate AP heterodimers from cell lysate. BG2 is also demonstrated to be applicable for tumor imaging in mice xenografted with cells highly expressing AP heterodimers. AP isozymes are found in several tissues and blood throughout the body, but the function and tissue distribution of AP heterodimers are totally unknown; therefore, BG2 could serve as a molecular probe to uncover the mystery of AP heterodimers. The generation of aptameric probes by cell-SELEX will open up a new situation for the study of protein dimers.
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Affiliation(s)
- Tao Bing
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
| | - Luyao Shen
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
| | - Junyan Wang
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
| | - Linlin Wang
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
| | - Xiangjun Liu
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
| | - Nan Zhang
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
| | - Xiao Xiao
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
| | - Dihua Shangguan
- Beijing National Laboratory for Molecular SciencesKey Laboratory of Analytical Chemistry for Living BiosystemsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China
- School of Chemical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
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77
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Brylski O, Ebbinghaus S, Mueller JW. Melting Down Protein Stability: PAPS Synthase 2 in Patients and in a Cellular Environment. Front Mol Biosci 2019; 6:31. [PMID: 31131283 PMCID: PMC6509946 DOI: 10.3389/fmolb.2019.00031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 04/15/2019] [Indexed: 12/17/2022] Open
Abstract
Within the crowded and complex environment of the cell, a protein experiences stabilizing excluded-volume effects and destabilizing quinary interactions with other proteins. Which of these prevail, needs to be determined on a case-by-case basis. PAPS synthases are dimeric and bifunctional enzymes, providing activated sulfate in the form of 3′-phosphoadenosine-5′-phosphosulfate (PAPS) for sulfation reactions. The human PAPS synthases PAPSS1 and PAPSS2 differ significantly in their protein stability as PAPSS2 is a naturally fragile protein. PAPS synthases bind a series of nucleotide ligands and some of them markedly stabilize these proteins. PAPS synthases are of biomedical relevance as destabilizing point mutations give rise to several pathologies. Genetic defects in PAPSS2 have been linked to bone and cartilage malformations as well as a steroid sulfation defect. All this makes PAPS synthases ideal to study protein unfolding, ligand binding, and the stabilizing and destabilizing factors in their cellular environment. This review provides an overview on current concepts of protein folding and stability and links this with our current understanding of the different disease mechanisms of PAPSS2-related pathologies with perspectives for future research and application.
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Affiliation(s)
- Oliver Brylski
- Institute of Physical and Theoretical Chemistry, Technische Universität Braunschweig, Braunschweig, Germany
| | - Simon Ebbinghaus
- Institute of Physical and Theoretical Chemistry, Technische Universität Braunschweig, Braunschweig, Germany
| | - Jonathan W Mueller
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom.,Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, United Kingdom
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78
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Abstract
Cell surface transmembrane receptors often form nanometer- to micrometer-scale clusters to initiate signal transduction in response to environmental cues. Extracellular ligand oligomerization, domain-domain interactions, and binding to multivalent proteins all contribute to cluster formation. Here we review the current understanding of mechanisms driving cluster formation in a series of representative receptor systems: glycosylated receptors, immune receptors, cell adhesion receptors, Wnt receptors, and receptor tyrosine kinases. We suggest that these clusters share properties of systems that undergo liquid-liquid phase separation and could be investigated in this light.
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Affiliation(s)
- Lindsay B Case
- Department of Biophysics and Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA; , ,
| | - Jonathon A Ditlev
- Department of Biophysics and Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA; , ,
| | - Michael K Rosen
- Department of Biophysics and Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA; , ,
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79
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Kaufhold WT, Brady RA, Tuffnell JM, Cicuta P, Di Michele L. Membrane Scaffolds Enhance the Responsiveness and Stability of DNA-Based Sensing Circuits. Bioconjug Chem 2019; 30:1850-1859. [PMID: 30865433 DOI: 10.1021/acs.bioconjchem.9b00080] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Will T. Kaufhold
- Biological and Soft Systems, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Ryan A. Brady
- Biological and Soft Systems, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Joshua M. Tuffnell
- Biological and Soft Systems, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Pietro Cicuta
- Biological and Soft Systems, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Lorenzo Di Michele
- Biological and Soft Systems, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
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80
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Quitterer U, AbdAlla S. Discovery of Pathologic GPCR Aggregation. Front Med (Lausanne) 2019; 6:9. [PMID: 30761305 PMCID: PMC6363654 DOI: 10.3389/fmed.2019.00009] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 01/14/2019] [Indexed: 01/02/2023] Open
Abstract
The family of G-protein-coupled receptors (GPCRs) is one of the most important drug targets. Mechanisms underlying GPCR activation and signaling are therefore of great pharmacologic interest. It was long thought that GPCRs exist and function as monomers. This feature was considered to distinguish GPCRs from other membrane receptors such as receptor tyrosine kinases or cytokine receptors, which signal from dimeric receptor complexes. But during the last two decades it was increasingly recognized that GPCRs can undergo aggregation to form dimers and higher order oligomers, resulting in homomeric and/or heteromeric protein complexes with different stoichiometries. Moreover, this protein complex formation could modify GPCR signaling and function. We contributed to this paradigm shift in GPCR pharmacology by the discovery of the first pathologic GPCR aggregation, which is the protein complex formation between the angiotensin II AT1 receptor and the bradykinin B2 receptor. Increased AT1-B2 heteromerization accounts for the angiotensin II hypersensitivity of pregnant women with preeclampsia hypertension. Since the discovery of AT1-B2, other pathologic GPCR aggregates were found, which contribute to atherosclerosis, neurodegeneration and Alzheimer's disease. As a result of our findings, pathologic GPCR aggregation appears as an independent and disease-specific process, which is increasingly considered as a novel target for pharmacologic intervention.
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Affiliation(s)
- Ursula Quitterer
- Molecular Pharmacology, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland.,Department of Medicine, Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland
| | - Said AbdAlla
- Molecular Pharmacology, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
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81
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Lee S, Son WS, Yang HB, Rajasekaran N, Kim SS, Hong S, Choi JS, Choi JY, Song K, Shin YK. A Glycoengineered Interferon-β Mutein (R27T) Generates Prolonged Signaling by an Altered Receptor-Binding Kinetics. Front Pharmacol 2019; 9:1568. [PMID: 30733680 PMCID: PMC6353837 DOI: 10.3389/fphar.2018.01568] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 12/24/2018] [Indexed: 12/15/2022] Open
Abstract
The glycoengineering approach is used to improve biophysical properties of protein-based drugs, but its direct impact on binding affinity and kinetic properties for the glycoengineered protein and its binding partner interaction is unclear. Type I interferon (IFN) receptors, composed of IFNAR1 and IFNAR2, have different binding strengths, and sequentially bind to IFN in the dominant direction, leading to activation of signals and induces a variety of biological effects. Here, we evaluated receptor-binding kinetics for each state of binary and ternary complex formation between recombinant human IFN-β-1a and the glycoengineered IFN-β mutein (R27T) using the heterodimeric Fc-fusion technology, and compared biological responses between them. Our results have provided evidence that the additional glycan of R27T, located at the binding interface of IFNAR2, destabilizes the interaction with IFNAR2 via steric hindrance, and simultaneously enhances the interaction with IFNAR1 by restricting the conformational freedom of R27T. Consequentially, altered receptor-binding kinetics of R27T in the ternary complex formation led to a substantial increase in strength and duration of biological responses such as prolonged signal activation and gene expression, contributing to enhanced anti-proliferative activity. In conclusion, our findings reveal N-glycan at residue 25 of R27T is a crucial regulator of receptor-binding kinetics that changes biological activities such as long-lasting activation. Thus, we believe that R27T may be clinically beneficial for patients with multiple sclerosis.
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Affiliation(s)
- Saehyung Lee
- Laboratory of Molecular Pathology and Cancer Genomics, Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Woo Sung Son
- Department of Pharmacy, College of Pharmacy, CHA University, Pocheon, South Korea
| | - Ho Bin Yang
- Laboratory of Molecular Pathology and Cancer Genomics, Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Nirmal Rajasekaran
- Laboratory of Molecular Pathology and Cancer Genomics, Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Sung-Su Kim
- The Center for Companion Diagnostics, LOGONE Bio Convergence Research Foundation, Seoul, South Korea
| | - Sungyoul Hong
- Laboratory of Molecular Pathology and Cancer Genomics, Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Joon-Seok Choi
- College of Pharmacy, Daegu Catholic University, Gyeongsan, South Korea
| | | | - Kyoung Song
- The Center for Companion Diagnostics, LOGONE Bio Convergence Research Foundation, Seoul, South Korea
| | - Young Kee Shin
- Laboratory of Molecular Pathology and Cancer Genomics, Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul, South Korea.,Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Suwon, South Korea
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82
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Sone E, Noshiro D, Ikebuchi Y, Nakagawa M, Khan M, Tamura Y, Ikeda M, Oki M, Murali R, Fujimori T, Yoda T, Honma M, Suzuki H, Ando T, Aoki K. The induction of RANKL molecule clustering could stimulate early osteoblast differentiation. Biochem Biophys Res Commun 2018; 509:435-440. [PMID: 30594398 DOI: 10.1016/j.bbrc.2018.12.093] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 12/13/2018] [Indexed: 11/26/2022]
Abstract
We recently found that the membrane-bound receptor activator of NF-κB ligand (RANKL) on osteoblasts works as a receptor to stimulate osteoblast differentiation, however, the reason why the RANKL-binding molecules stimulate osteoblast differentiation has not been well clarified. Since the induction of cell-surface receptor clustering is known to lead to cell activation, we hypothesized that the induction of membrane-RANKL clustering on osteoblasts might stimulate osteoblast differentiation. Immunoblotting showed that the amount of RANKL on the membrane was increased by the RANKL-binding peptide OP3-4, but not by osteoprotegerin (OPG), the other RANKL-binding molecule, in Gfp-Rankl-transfected ST2 cells. Observation under a high-speed atomic force microscope (HS-AFM) revealed that RANKL molecules have the ability to form clusters. The induction of membrane-RANKL-OPG-Fc complex clustering by the addition of IgM in Gfp-Rankl-transfected ST2 cells could enhance the expression of early markers of osteoblast differentiation to the same extent as OP3-4, while OPG-Fc alone could not. These results suggest that the clustering-formation of membrane-RANKL on osteoblasts could stimulate early osteoblast differentiation.
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Affiliation(s)
- Eri Sone
- Department of Oral Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan; Department of Basic Oral Health Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Daisuke Noshiro
- Nano Life Science Institute (WPI NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Yuki Ikebuchi
- Department of Pharmacy, The University of Tokyo Hospital, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Mami Nakagawa
- Division of Embryology, National Institute for Basic Biology, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi, 444-8787, Japan
| | - Masud Khan
- Department of Basic Oral Health Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Yukihiko Tamura
- Department of Bio-Matrix (Pharmacology), Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Masaomi Ikeda
- Department of Oral Prosthetic Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Meiko Oki
- Department of Basic Oral Health Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Ramachandran Murali
- Research Division of Immunology, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Toshihiko Fujimori
- Division of Embryology, National Institute for Basic Biology, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi, 444-8787, Japan
| | - Tetsuya Yoda
- Department of Oral Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Masashi Honma
- Department of Pharmacy, The University of Tokyo Hospital, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Hiroshi Suzuki
- Department of Pharmacy, The University of Tokyo Hospital, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Toshio Ando
- Nano Life Science Institute (WPI NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Kazuhiro Aoki
- Department of Basic Oral Health Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
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83
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Kim DH, Park S, Kim DK, Jeong MG, Noh J, Kwon Y, Zhou K, Lee NK, Ryu SH. Direct visualization of single-molecule membrane protein interactions in living cells. PLoS Biol 2018; 16:e2006660. [PMID: 30543635 PMCID: PMC6307816 DOI: 10.1371/journal.pbio.2006660] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 12/27/2018] [Accepted: 11/23/2018] [Indexed: 12/11/2022] Open
Abstract
Interactions between membrane proteins are poorly understood despite their importance in cell signaling and drug development. Here, we present a co-immunoimmobilization assay (Co-II) enabling the direct observation of membrane protein interactions in single living cells that overcomes the limitations of currently prevalent proximity-based indirect methods. Using Co-II, we investigated the transient homodimerizations of epidermal growth factor receptor (EGFR) and beta-2 adrenergic receptor (β2-AR) in living cells, revealing the differential regulation of these receptors’ dimerizations by molecular conformations and microenvironment in a plasma membrane. Co-II should provide a simple, rapid, and robust platform for visualizing both weak and strong protein interactions in the plasma membrane of living cells. Protein–protein interactions govern cellular processes. The majority of these physical interactions previously identified are strong/permanent interactions, which typically remain unbroken even after purification. The weak/transient interactions between proteins have been implicated in the control of dynamic cellular process that maintain cellular homeostasis and trigger signaling cascades upon environmental changes. However, these interactions are poorly investigated, mainly due to the methodological limitations. Here, we have developed a co-immunoimmobilization assay called Co-II that enables the direct visualization of protein–protein interactions in the membrane of living cells at the single-molecule level. Co-II is based on the intuitive concept that if the protein of interest is immobilized, the interacting protein must be co-immobilized. The use of intrinsic protein diffusivity fundamentally overcomes the limitations of proximity-based methods. Using Co-II, we study the transient homodimerizations of EGFR and β2-AR in living cells, which have been implicated in several types of cancers and heart diseases. We show that the dimerization of these receptors is differently regulated by molecular conformations and the microenvironment in the plasma membrane.
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Affiliation(s)
- Do-Hyeon Kim
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Soyeon Park
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Dong-Kyun Kim
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Min Gyu Jeong
- Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Jungeun Noh
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Yonghoon Kwon
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Kai Zhou
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Nam Ki Lee
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, Republic of Korea
- Department of Chemistry, Seoul National University, Seoul, Republic of Korea
- * E-mail: (SHR); (NKL)
| | - Sung Ho Ryu
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
- * E-mail: (SHR); (NKL)
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84
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Yang Q, Peng L, Wu Y, Li Y, Wang L, Luo JH, Xu J. Endocytic Adaptor Protein HIP1R Controls Intracellular Trafficking of Epidermal Growth Factor Receptor in Neuronal Dendritic Development. Front Mol Neurosci 2018; 11:447. [PMID: 30574069 PMCID: PMC6291753 DOI: 10.3389/fnmol.2018.00447] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 11/19/2018] [Indexed: 12/12/2022] Open
Abstract
Huntington-interacting protein 1-related protein (HIP1R) was identified on the basis of its structural homology with HIP1. Based on its domain structure, HIP1R is a putative endocytosis-related protein. Our previous study had shown that knockdown of HIP1R induces a dramatic decrease of dendritic growth and branching in cultured rat hippocampal neurons. However, the underlying mechanism remains elucidative. In this study, we found that knockdown of HIP1R impaired the endocytosis of activated epidermal growth factor receptor (EGFR) and the consequent activation of the downstream ERK and Akt proteins. Meanwhile, it blocked the EGF-induced dendritic outgrowth. We also showed that the HIP1R fragment, amino acids 633–822 (HIP1R633–822), interacted with EGFR and revealed a dominant negative effect in disrupting the HIP1R-EGFR interaction-mediated neuronal development. Collectively, these results reveal a novel mechanism that HIP1R plays a critical role in neurite initiation and dendritic branching in cultured hippocampal neurons via mediating the endocytosis of EGFR and downstream signaling.
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Affiliation(s)
- Qian Yang
- Department of Neurobiology, Institute of Neuroscience, NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
| | - Lin Peng
- Department of Psychiatry, Jining Medical University, Jining, China
| | - Yu Wu
- Department of Neurobiology, Institute of Neuroscience, NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
| | - Yanan Li
- Department of Anesthesiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ling Wang
- Department of Neurobiology, Institute of Neuroscience, NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
| | - Jian-Hong Luo
- Department of Neurobiology, Institute of Neuroscience, NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
| | - Junyu Xu
- Department of Neurobiology, Institute of Neuroscience, NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University School of Medicine, Hangzhou, China
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85
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Wang L, Li W, Sun J, Zhang SY, Yang S, Li J, Li J, Yang HH. Imaging of Receptor Dimers in Zebrafish and Living Cells via Aptamer Recognition and Proximity-Induced Hybridization Chain Reaction. Anal Chem 2018; 90:14433-14438. [PMID: 30444610 DOI: 10.1021/acs.analchem.8b04015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
On cell-membrane surfaces, receptor-protein dimers play fundamental roles in many signaling pathways that are crucial for normal biological processes and cancer development. Efficient and sensitive analysis of receptor dimers in the native environment is highly desirable. Herein, we present a strategy for amplified imaging of receptor dimers in zebrafish and living cells that relies on aptamer recognition and proximity-induced hybridization chain reaction. Taking advantage of specific aptamer recognition and enzyme-free signal amplification, this strategy is successfully applied to the visualization of c-Met-receptor dimers in an HGF-independent or -dependent manner. Therefore, the developed imaging strategy paves the way for further investigation of the dimerization or oligomerization states of cell-surface receptors and their corresponding activation processes in zebrafish and living cells.
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Affiliation(s)
- Liping Wang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fuzhou 350116 , People's Republic of China.,Institute of Molecular Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Wei Li
- College of Biological Science and Engineering , Fuzhou University , Fuzhou 350116 , People's Republic of China
| | - Jin Sun
- College of Biological Science and Engineering , Fuzhou University , Fuzhou 350116 , People's Republic of China
| | - Su-Yun Zhang
- Department of Medical Oncology , Fujian Medical University Union Hospital , Fuzhou 350001 , People's Republic of China
| | - Sheng Yang
- Department of Medical Oncology , Fujian Medical University Union Hospital , Fuzhou 350001 , People's Republic of China
| | - Jingying Li
- College of Biological Science and Engineering , Fuzhou University , Fuzhou 350116 , People's Republic of China
| | - Juan Li
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fuzhou 350116 , People's Republic of China.,Institute of Molecular Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Huang-Hao Yang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fuzhou 350116 , People's Republic of China
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86
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Development of novel affinity reagents for detecting protein tyrosine phosphorylation based on superbinder SH2 domain in tumor cells. Anal Chim Acta 2018; 1032:138-146. [DOI: 10.1016/j.aca.2018.05.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 05/07/2018] [Accepted: 05/16/2018] [Indexed: 11/18/2022]
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87
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Kumar S, Jain S. Immune signalling by supramolecular assemblies. Immunology 2018; 155:435-445. [PMID: 30144032 DOI: 10.1111/imm.12995] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 08/10/2018] [Indexed: 12/19/2022] Open
Abstract
Formation of supramolecular assemblies appears to be a general mechanism in immune signalling pathways. These supramolecular assemblies appear to form through a nucleated polymerization mechanism. This review examines selected immune signalling pathways that involve supramolecular assemblies, describes the concepts of protein polymerization, and discusses how those concepts of protein polymerization implicate new elegant ways for signal amplification, setting threshold and noise reduction in these pathways.
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Affiliation(s)
- Santosh Kumar
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, Telangana, India
| | - Shweta Jain
- Department of Neurology and Graduate Programs in Neuroscience and Biomedical Sciences, University of California at San Francisco, San Francisco, CA, USA
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88
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Counterbalance: modulation of VEGF/VEGFR activities by TNFSF15. Signal Transduct Target Ther 2018; 3:21. [PMID: 30101034 PMCID: PMC6085396 DOI: 10.1038/s41392-018-0023-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/23/2018] [Accepted: 05/31/2018] [Indexed: 01/11/2023] Open
Abstract
Vascular hyperpermeability occurs in angiogenesis and several pathobiological conditions, producing elevated interstitial fluid pressure and lymphangiogenesis. How these closely related events are modulated is a fundamentally important question regarding the maintenance of vascular homeostasis and treatment of disease conditions such as cancer, stroke, and myocardial infarction. Signals mediated by vascular endothelial growth factor receptors, noticeably VEGFR-1, −2, and −3, are centrally involved in the promotion of both blood vessel and lymphatic vessel growth. These signaling pathways are counterbalanced or, in the case of VEGFR3, augmented by signals induced by tumor necrosis factor superfamily-15 (TNFSF15). TNFSF15 can simultaneously downregulate membrane-bound VEGFR1 and upregulate soluble VEGFR1, thus changing VEGF/VEGFR1 signals from pro-angiogenic to anti-angiogenic. In addition, TNFSF15 inhibits VEGF-induced VEGFR2 phosphorylation, thereby curbing VEGFR2-mediated enhancement of vascular permeability. Third, and perhaps more interestingly, TNFSF15 is capable of stimulating VEGFR3 gene expression in lymphatic endothelial cells, thus augmenting VEGF-C/D-VEGFR3-facilitated lymphangiogenesis. We discuss the intertwining relationship between the actions of TNFSF15 and VEGF in this review. The ability of tumor necrosis factor superfamily-15 (TNFSF15) protein to balance the actions of vascular endothelial growth factors (VEGFs) highlights new therapeutic strategies for the treatment of diseases that disrupt the circulatory system. Gui-Li Yang at the Tianjin Neurological Institute and Lu-Yuan Li at Nankai University describe the mechanisms through which TNFSF15 inhibits blood vessel growth mediated by VEGF receptor-1 (VEGFR1) and counterbalances the increase in vascular permeability mediated by VEGFR2. Interestingly, TNFSF15 enhances the effects of VEGFR3 on the formation of lymphatic vessels by promoting VEGFR3 gene expression in lymphatic endothelial cells. Further research will determine whether TNFSF15′s unique capacity to regulate the properties of both blood and lymph vessels can be harnessed to improve the treatment of conditions such as cancer, stroke, myocardial infarction and lymphoedema.
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89
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Fang RH, Kroll AV, Gao W, Zhang L. Cell Membrane Coating Nanotechnology. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1706759. [PMID: 29582476 PMCID: PMC5984176 DOI: 10.1002/adma.201706759] [Citation(s) in RCA: 960] [Impact Index Per Article: 160.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 12/12/2017] [Indexed: 05/03/2023]
Abstract
Nanoparticle-based therapeutic, prevention, and detection modalities have the potential to greatly impact how diseases are diagnosed and managed in the clinic. With the wide range of nanomaterials available, the rational design of nanocarriers on an application-specific basis has become increasingly commonplace. Here, a comprehensive overview is provided on an emerging platform: cell-membrane-coating nanotechnology. As a fundamental unit of biology, cells carry out a wide range of functions, including the remarkable ability to interface and interact with their surrounding environment. Instead of attempting to replicate such functions via synthetic techniques, researchers are now directly leveraging naturally derived cell membranes as a means of bestowing nanoparticles with enhanced biointerfacing capabilities. This top-down technique is facile, highly generalizable, and has the potential to greatly augment existing nanocarriers. Further, the introduction of a natural membrane substrate onto nanoparticles surfaces has enabled additional applications beyond those traditionally associated with nanomedicine. Despite its relative youth, there exists an impressive body of literature on cell membrane coating, which is covered here in detail. Overall, there is still significant room for development, as researchers continue to refine existing workflows while finding new and exciting applications that can take advantage of this developing technology.
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Affiliation(s)
- Ronnie H. Fang
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, U.S.A
| | - Ashley V. Kroll
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, U.S.A
| | - Weiwei Gao
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, U.S.A
| | - Liangfang Zhang
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, U.S.A
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90
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Ang YS, Li JJ, Chua PJ, Ng CT, Bay BH, Yung LYL. Localized Visualization and Autonomous Detection of Cell Surface Receptor Clusters Using DNA Proximity Circuit. Anal Chem 2018; 90:6193-6198. [PMID: 29608843 DOI: 10.1021/acs.analchem.8b00722] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Cell surface receptors play an important role in mediating cell communication and are used as disease biomarkers and therapeutic targets. We present a one-pot molecular toolbox, which we term the split proximity circuit (SPC), for the autonomous detection and visualization of cell surface receptor clusters. Detection was powered by antibody recognition and a series of autonomous DNA hybridization to achieve localized, enzyme-free signal amplification. The system under study was the human epidermal growth factor receptor (HER) family, that is, HER2:HER2 homodimer and HER2:HER3 heterodimer, both in cell lysate and in situ on fixed whole cells. The detection and imaging of receptors were carried out using standard microplate scans and confocal microscopy, respectively. The circuit operated specifically with minimal leakages and successfully captured the receptor expression profiles on three cell types without any intermediate washing steps.
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Affiliation(s)
- Yan Shan Ang
- Department of Chemical and Biomolecular Engineering , National University of Singapore , Singapore 117585 , Singapore
| | - Jia'En Jasmine Li
- Department of Chemical and Biomolecular Engineering , National University of Singapore , Singapore 117585 , Singapore
| | - Pei-Jou Chua
- Department of Anatomy, Yong Loo Lin School of Medicine , National University of Singapore , Singapore 117594 , Singapore
| | - Cheng-Teng Ng
- Department of Anatomy, Yong Loo Lin School of Medicine , National University of Singapore , Singapore 117594 , Singapore
| | - Boon-Huat Bay
- Department of Anatomy, Yong Loo Lin School of Medicine , National University of Singapore , Singapore 117594 , Singapore
| | - Lin-Yue Lanry Yung
- Department of Chemical and Biomolecular Engineering , National University of Singapore , Singapore 117585 , Singapore
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91
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Zuo C, Sheng X, Ma M, Xia M, Ouyang L. ISG15 in the tumorigenesis and treatment of cancer: An emerging role in malignancies of the digestive system. Oncotarget 2018; 7:74393-74409. [PMID: 27626310 PMCID: PMC5342061 DOI: 10.18632/oncotarget.11911] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 09/01/2016] [Indexed: 02/07/2023] Open
Abstract
The interferon-stimulated gene 15 ubiquitin-like modifier (ISG15) encodes an IFN-inducible, ubiquitin-like protein. The ISG15 protein forms conjugates with numerous cellular proteins that are involved in a multitude of cellular functions, including interferon-induced immune responses and the regulation of cellular protein turnover. The expression of ISG15 and ISG15-mediated conjugation has been implicated in a wide range of human tumors and cancer cell lines, but the roles of ISG15 in tumorigenesis and responses to anticancer treatments remain largely unknown. In this review, we discuss the findings of recent studies with regard to the role of ISG15 pathways in cancers of the digestive system.
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Affiliation(s)
- Chaohui Zuo
- Department of Gastroduodenal and Pancreatic Surgery, Translation Medicine Research Center of Liver Cancer, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Graduate School, University of South China, Hengyang, Hunan, China
| | - Xinyi Sheng
- Graduate School, University of South China, Hengyang, Hunan, China
| | - Min Ma
- Department of Gastroduodenal and Pancreatic Surgery, Translation Medicine Research Center of Liver Cancer, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Man Xia
- Laboratory of Digestive Oncology, Hunan Province Cancer Institute, Changsha, Hunan, China
| | - Linda Ouyang
- Laboratory of Digestive Oncology, Hunan Province Cancer Institute, Changsha, Hunan, China
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92
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Liang H, Chen S, Li P, Wang L, Li J, Li J, Yang HH, Tan W. Nongenetic Approach for Imaging Protein Dimerization by Aptamer Recognition and Proximity-Induced DNA Assembly. J Am Chem Soc 2018. [PMID: 29522674 DOI: 10.1021/jacs.7b11311] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Herein, we report a nongenetic and real-time approach for imaging protein dimerization on living cell surfaces by aptamer recognition and proximity-induced DNA assembly. We use the aptamer specific for the receptor monomer as a recognition probe. When receptor dimerization occurs, the dimeric receptors bring two aptamer probes into close proximity, thereby triggering dynamic DNA assembly. The proposed approach was successfully applied to visualize dimerization of Met receptor and transforming growth factor-β type II receptor. This approach allows us to image the two states (monomer/dimer) of a receptor protein on living cell surfaces in real time, opening a universal method for further investigation of protein dimerization and the corresponding activation processes in signal transduction.
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Affiliation(s)
- Hong Liang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry , Fuzhou University , Fuzhou 350116 , People's Republic of China
| | - Shan Chen
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry , Fuzhou University , Fuzhou 350116 , People's Republic of China
| | - Peipei Li
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry , Fuzhou University , Fuzhou 350116 , People's Republic of China
| | - Liping Wang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry , Fuzhou University , Fuzhou 350116 , People's Republic of China
| | - Jingying Li
- College of Biological Science and Engineering , Fuzhou University , Fuzhou 350116 , People's Republic of China
| | - Juan Li
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry , Fuzhou University , Fuzhou 350116 , People's Republic of China.,Institute of Molecular Medicine, Renji Hospital , Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University , Shanghai , 200240 , People's Republic of China
| | - Huang-Hao Yang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry , Fuzhou University , Fuzhou 350116 , People's Republic of China.,College of Biological Science and Engineering , Fuzhou University , Fuzhou 350116 , People's Republic of China
| | - Weihong Tan
- Institute of Molecular Medicine, Renji Hospital , Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University , Shanghai , 200240 , People's Republic of China.,Department of Chemistry and Department of Physiology and Functional Genomics, Center for Research at the Bio/Nano Interface, UF Health Cancer Center , University of Florida , Gainesville , Florida 32611-7200 , United States
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93
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Maadi H, Nami B, Tong J, Li G, Wang Z. The effects of trastuzumab on HER2-mediated cell signaling in CHO cells expressing human HER2. BMC Cancer 2018; 18:238. [PMID: 29490608 PMCID: PMC5831215 DOI: 10.1186/s12885-018-4143-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 02/19/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Targeted therapy with trastuzumab has become a mainstay for HER2-positive breast cancer without a clear understanding of the mechanism of its action. While many mechanisms have been suggested for the action of trastuzumab, most of them are not substantiated by experimental data. It has been suggested that trastuzumab functions by inhibiting intracellular signaling initiated by HER2, however, the data are very controversial. A major issue is the different cellular background of various breast cancer cells lines used in these studies. Each breast cancer cell line has a unique expression profile of various HER receptors, which could significantly affect the effects of trastuzumab. METHODS To overcome this problem, in this research we adopted a cell model that allow us to specifically examine the effects of trastuzumab on a single HER receptor without the influence of other HER receptors. Three CHO cell lines stably expressing only human EGFR (CHO-EGFR), HER2 (CHO-K6), or HER3 (CHO-HER3) were used. Various methods including cytotoxicity assay, immunoblotting, indirect immunofluorescence, cross linking, and antibody-dependent cellular cytotoxicity (ADCC) were employed in this research. RESULTS We showed that trastuzumab did not bind EGFR and HER3, and thus did not affect the homodimerization and phosphorylation of EGFR and HER3. However, overexpression of HER2 in CHO cells, in the absence of other HER receptors, resulted in the homodimerization of HER2 and the phosphorylation of HER2 at all major pY residues. Trastuzumab bound to HER2 specifically and with high affinity. Trastuzumab inhibited neither the homodimerization of HER2, nor the phosphorylation of HER2 at most phosphotyrosine residues. Moreover, trastuzumab did not inhibit the phosphorylation of ERK and AKT in CHO-K6 cells, and did not inhibit the proliferation of CHO-K6 cells. However, trastuzumab induced strong ADCC in CHO-K6 cells. CONCLUSION We concluded that, in the absence of other HER receptors, trastuzumab exerts its antitumor activity through the induction of ADCC, rather than the inhibition of HER2-homodimerization and phosphorylation.
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Affiliation(s)
- Hamid Maadi
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Babak Nami
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Junfeng Tong
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Gina Li
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada
| | - Zhixiang Wang
- Department of Medical Genetics, and Signal Transduction Research Group, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2H7, Canada.
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94
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Zhang Y, Xia M, Jin K, Wang S, Wei H, Fan C, Wu Y, Li X, Li X, Li G, Zeng Z, Xiong W. Function of the c-Met receptor tyrosine kinase in carcinogenesis and associated therapeutic opportunities. Mol Cancer 2018; 17:45. [PMID: 29455668 PMCID: PMC5817860 DOI: 10.1186/s12943-018-0796-y] [Citation(s) in RCA: 321] [Impact Index Per Article: 53.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 02/01/2018] [Indexed: 12/15/2022] Open
Abstract
c-Met is a receptor tyrosine kinase belonging to the MET (MNNG HOS transforming gene) family, and is expressed on the surfaces of various cells. Hepatocyte growth factor (HGF) is the ligand for this receptor. The binding of HGF to c-Met initiates a series of intracellular signals that mediate embryogenesis and wound healing in normal cells. However, in cancer cells, aberrant HGF/c-Met axis activation, which is closely related to c-Met gene mutations, overexpression, and amplification, promotes tumor development and progression by stimulating the PI3K/AKT, Ras/MAPK, JAK/STAT, SRC, Wnt/β-catenin, and other signaling pathways. Thus, c-Met and its associated signaling pathways are clinically important therapeutic targets. In this review, we elaborate on the molecular structure of c-Met and HGF and the mechanism through which their interaction activates the PI3K/AKT, Ras/MAPK, and Wnt signaling pathways. We also summarize the connection between c-Met and RON and EGFR, which are also receptor tyrosine kinases. Finally, we introduce the current therapeutic drugs that target c-Met in primary tumors, and their use in clinical research.
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Affiliation(s)
- Yazhuo Zhang
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Mengfang Xia
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ke Jin
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Shufei Wang
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Hang Wei
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Chunmei Fan
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Yingfen Wu
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Xiaoling Li
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiayu Li
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Guiyuan Li
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhaoyang Zeng
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, China.
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China.
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Wei Xiong
- The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, Hunan, China.
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China.
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
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95
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Siveen KS, Prabhu KS, Achkar IW, Kuttikrishnan S, Shyam S, Khan AQ, Merhi M, Dermime S, Uddin S. Role of Non Receptor Tyrosine Kinases in Hematological Malignances and its Targeting by Natural Products. Mol Cancer 2018; 17:31. [PMID: 29455667 PMCID: PMC5817858 DOI: 10.1186/s12943-018-0788-y] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 02/01/2018] [Indexed: 12/12/2022] Open
Abstract
Tyrosine kinases belong to a family of enzymes that mediate the movement of the phosphate group to tyrosine residues of target protein, thus transmitting signals from the cell surface to cytoplasmic proteins and the nucleus to regulate physiological processes. Non-receptor tyrosine kinases (NRTK) are a sub-group of tyrosine kinases, which can relay intracellular signals originating from extracellular receptor. NRTKs can regulate a huge array of cellular functions such as cell survival, division/propagation and adhesion, gene expression, immune response, etc. NRTKs exhibit considerable variability in their structural make up, having a shared kinase domain and commonly possessing many other domains such as SH2, SH3 which are protein-protein interacting domains. Recent studies show that NRTKs are mutated in several hematological malignancies, including lymphomas, leukemias and myelomas, leading to aberrant activation. It can be due to point mutations which are intragenic changes or by fusion of genes leading to chromosome translocation. Mutations that lead to constitutive kinase activity result in the formation of oncogenes, such as Abl, Fes, Src, etc. Therefore, specific kinase inhibitors have been sought after to target mutated kinases. A number of compounds have since been discovered, which have shown to inhibit the activity of NRTKs, which are remarkably well tolerated. This review covers the role of various NRTKs in the development of hematological cancers, including their deregulation, genetic alterations, aberrant activation and associated mutations. In addition, it also looks at the recent advances in the development of novel natural compounds that can target NRTKs and perhaps in combination with other forms of therapy can show great promise for the treatment of hematological malignancies.
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Affiliation(s)
- Kodappully S Siveen
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, State of Qatar
| | - Kirti S Prabhu
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, State of Qatar
| | - Iman W Achkar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, State of Qatar
| | - Shilpa Kuttikrishnan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, State of Qatar
| | - Sunitha Shyam
- Medical Research Center, Hamad Medical Corporation, Doha, State of Qatar
| | - Abdul Q Khan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, State of Qatar
| | - Maysaloun Merhi
- Translational Cancer Research Facility, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, State of Qatar
| | - Said Dermime
- Translational Cancer Research Facility, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, State of Qatar
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, State of Qatar.
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96
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Native prion protein homodimers are destabilized by oligomeric amyloid β 1-42 species as shown by single-molecule imaging. Neuroreport 2018; 29:106-111. [PMID: 29120943 DOI: 10.1097/wnr.0000000000000916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Prion proteins (PrPc) are receptors for amyloid β 1-42 (Aβ1-42) oligomers, but we do not know the impact of Aβ1-42 binding to PrPc on the interaction of membrane-bound PrPc with molecules that regulate downstream biological pathways. Stability of the PrPc dimeric complex and subsequent intermolecular interactions with membranous or cytoplasmic molecules are important for physiological functions of PrPc including neuroprotection. The principal aim of this study was to determine whether homodimer lifetime of PrPc is affected by the presence of Aβ1-42 oligomers. Single-molecule imaging analysis was carried out by total internal reflection fluorescence microscopy in PrPc-transfected CHO-K1 cells in the absence or presence of characterized Aβ1-42 oligomers. The contribution of different Aβ1-42 oligomer conformations to Alzheimer's disease pathophysiology and to the associated neurotoxicity is unknown. To be precise, with the oligomeric species used in our study, we biochemically analyzed the molecular weight of oligomers formed from Aβ1-42 monomers under our experimental conditions. The lifetime of PrPc homodimers was 210 ms, and in the presence of Aβ1-42 oligomers, the lifetime was significantly reduced (to 92 ms). The reduction of PrPc homodimer lifetime by Aβ1-42 oligomers may impair PrPc-mediated downstream neuroprotective signaling.
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97
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Fleischmann R. Tofacitinib in the treatment of active rheumatoid arthritis in adults. Immunotherapy 2018; 10:39-56. [DOI: 10.2217/imt-2017-0118] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Tofacitinib, a pan Janus kinase inhibitor, has been investigated as monotherapy in patients naive to methotrexate and in methotrexate incomplete responders and in combination with disease-modifying antirheumatic drugs in antirheumatic drug incomplete responders and TNF inhibitor failures in the Phase II and III programs. The clinical trial program demonstrated efficacy and a reasonable safety profile in these disease populations that has led to the approval of tofacitinib 5 mg twice daily orally in many countries. The pharmacology, chemistry, pharmacokinetics, pharmacodynamics, efficacy and safety in the Phase II and III clinical trials, safety in the long-term extension studies and postmarketing safety reports are the focus of this review.
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Affiliation(s)
- Roy Fleischmann
- Department of Medicine, University of Texas Southwestern Medical Center, 8144 Walnut Hill Lane, Dallas, Texas 75231, USA
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98
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Nanolayered hybrid mediates synergistic co-delivery of ligand and ligation activator for inducing stem cell differentiation and tissue healing. Biomaterials 2017; 149:12-28. [DOI: 10.1016/j.biomaterials.2017.09.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 09/23/2017] [Accepted: 09/28/2017] [Indexed: 12/20/2022]
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99
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Contractile actomyosin arcs promote the activation of primary mouse T cells in a ligand-dependent manner. PLoS One 2017; 12:e0183174. [PMID: 28817635 PMCID: PMC5560663 DOI: 10.1371/journal.pone.0183174] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 07/31/2017] [Indexed: 12/16/2022] Open
Abstract
Mechano-transduction is an emerging but still poorly understood component of T cell activation. Here we investigated the ligand-dependent contribution made by contractile actomyosin arcs populating the peripheral supramolecular activation cluster (pSMAC) region of the immunological synapse (IS) to T cell receptor (TCR) microcluster transport and proximal signaling in primary mouse T cells. Using super resolution microscopy, OT1-CD8+ mouse T cells, and two ovalbumin (OVA) peptides with different affinities for the TCR, we show that the generation of organized actomyosin arcs depends on ligand potency and the ability of myosin 2 to contract actin filaments. While weak ligands induce disorganized actomyosin arcs, strong ligands result in organized actomyosin arcs that correlate well with tension-sensitive CasL phosphorylation and the accumulation of ligands at the IS center. Blocking myosin 2 contractility greatly reduces the difference in the extent of Src and LAT phosphorylation observed between the strong and the weak ligand, arguing that myosin 2-dependent force generation within actin arcs contributes to ligand discrimination. Together, our data are consistent with the idea that actomyosin arcs in the pSMAC region of the IS promote a mechano-chemical feedback mechanism that amplifies the accumulation of critical signaling molecules at the IS.
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100
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Martin LJ, Smith SB, Khoutorsky A, Magnussen CA, Samoshkin A, Sorge RE, Cho C, Yosefpour N, Sivaselvachandran S, Tohyama S, Cole T, Khuong TM, Mir E, Gibson DG, Wieskopf JS, Sotocinal SG, Austin JS, Meloto CB, Gitt JH, Gkogkas C, Sonenberg N, Greenspan JD, Fillingim RB, Ohrbach R, Slade GD, Knott C, Dubner R, Nackley AG, Ribeiro-da-Silva A, Neely GG, Maixner W, Zaykin DV, Mogil JS, Diatchenko L. Epiregulin and EGFR interactions are involved in pain processing. J Clin Invest 2017; 127:3353-3366. [PMID: 28783046 DOI: 10.1172/jci87406] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 06/27/2017] [Indexed: 12/27/2022] Open
Abstract
The EGFR belongs to the well-studied ErbB family of receptor tyrosine kinases. EGFR is activated by numerous endogenous ligands that promote cellular growth, proliferation, and tissue regeneration. In the present study, we have demonstrated a role for EGFR and its natural ligand, epiregulin (EREG), in pain processing. We show that inhibition of EGFR with clinically available compounds strongly reduced nocifensive behavior in mouse models of inflammatory and chronic pain. EREG-mediated activation of EGFR enhanced nociception through a mechanism involving the PI3K/AKT/mTOR pathway and matrix metalloproteinase-9. Moreover, EREG application potentiated capsaicin-induced calcium influx in a subset of sensory neurons. Both the EGFR and EREG genes displayed a genetic association with the development of chronic pain in several clinical cohorts of temporomandibular disorder. Thus, EGFR and EREG may be suitable therapeutic targets for persistent pain conditions.
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Affiliation(s)
- Loren J Martin
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada.,Department of Psychology, University of Toronto Mississauga, Mississauga, Ontario, Canada
| | - Shad B Smith
- Center for Neurosensory Disorders, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Arkady Khoutorsky
- Department of Biochemistry and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - Claire A Magnussen
- Department of Pharmacology and Therapeutics and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - Alexander Samoshkin
- Department of Anesthesia, Faculty of Dentistry and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - Robert E Sorge
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - Chulmin Cho
- Department of Psychology, University of Toronto Mississauga, Mississauga, Ontario, Canada
| | - Noosha Yosefpour
- Department of Pharmacology and Therapeutics and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | | | - Sarasa Tohyama
- Department of Psychology, University of Toronto Mississauga, Mississauga, Ontario, Canada
| | - Tiffany Cole
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Sydney, Australia
| | - Thang M Khuong
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Sydney, Australia
| | - Ellen Mir
- Center for Neurosensory Disorders, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Dustin G Gibson
- Center for Neurosensory Disorders, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Jeffrey S Wieskopf
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - Susana G Sotocinal
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - Jean Sebastien Austin
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - Carolina B Meloto
- Department of Anesthesia, Faculty of Dentistry and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - Joseph H Gitt
- Center for Neurosensory Disorders, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Christos Gkogkas
- Department of Biochemistry and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - Nahum Sonenberg
- Department of Biochemistry and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - Joel D Greenspan
- Department of Neural and Pain Sciences and Brotman Facial Pain Center, University of Maryland Dental School, Baltimore, Maryland, USA
| | - Roger B Fillingim
- Department of Community Dentistry and Behavioral Science, University of Florida, Gainesville, Florida, USA
| | - Richard Ohrbach
- Department of Oral Diagnostic Services, University at Buffalo, Buffalo, New York, USA
| | - Gary D Slade
- Department of Dental Ecology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Charles Knott
- Battelle Memorial Institute, Durham, North Carolina, USA
| | - Ronald Dubner
- Department of Neural and Pain Sciences and Brotman Facial Pain Center, University of Maryland Dental School, Baltimore, Maryland, USA
| | - Andrea G Nackley
- Center for Neurosensory Disorders, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Alfredo Ribeiro-da-Silva
- Department of Pharmacology and Therapeutics and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - G Gregory Neely
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Sydney, Australia
| | - William Maixner
- Center for Neurosensory Disorders, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Dmitri V Zaykin
- National Institutes of Environmental Health Sciences, NIH, Research Triangle Park, North Carolina, USA
| | - Jeffrey S Mogil
- Department of Psychology and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
| | - Luda Diatchenko
- Department of Anesthesia, Faculty of Dentistry and Alan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec, Canada
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