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Bychkov I, Topchu I, Makhov P, Kudinov A, Patel JD, Boumber Y. Regulation of VEGFR2 and AKT Signaling by Musashi-2 in Lung Cancer. Cancers (Basel) 2023; 15:2529. [PMID: 37173995 PMCID: PMC10177017 DOI: 10.3390/cancers15092529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Lung cancer is the most frequently diagnosed cancer type and the leading cause of cancer-related deaths worldwide. Non-small cell lung cancer (NSCLC) represents most of the diagnoses of lung cancer. Vascular endothelial growth factor receptor-2 (VEGFR2) is a member of the VEGF family of receptor tyrosine kinase proteins, which are expressed on both endothelial and tumor cells, are one of the key proteins contributing to cancer development, and are involved in drug resistance. We previously showed that Musashi-2 (MSI2) RNA-binding protein is associated with NSCLC progression by regulating several signaling pathways relevant to NSCLC. In this study, we performed Reverse Protein Phase Array (RPPA) analysis of murine lung cancer, which suggests that VEGFR2 protein is strongly positively regulated by MSI2. Next, we validated VEGFR2 protein regulation by MSI2 in several human lung adenocarcinoma cell line models. Additionally, we found that MSI2 affected AKT signaling via negative PTEN mRNA translation regulation. In silico prediction analysis suggested that both VEGFR2 and PTEN mRNAs have predicted binding sites for MSI2. We next performed RNA immunoprecipitation coupled with quantitative PCR, which confirmed that MSI2 directly binds to VEGFR2 and PTEN mRNAs, suggesting a direct regulation mechanism. Finally, MSI2 expression positively correlated with VEGFR2 and VEGF-A protein levels in human lung adenocarcinoma samples. We conclude that the MSI2/VEGFR2 axis contributes to lung adenocarcinoma progression and is worth further investigations and therapeutic targeting.
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Affiliation(s)
- Igor Bychkov
- Robert H Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL 60611, USA
| | - Iuliia Topchu
- Robert H Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL 60611, USA
| | - Petr Makhov
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Alexander Kudinov
- Cardiology Department, University of Illinois in Chicago, 840 S. Wood Street, Chicago, IL 60612, USA
| | - Jyoti D. Patel
- Division of Hematology/Oncology, Section of Thoracic Head and Neck Medical Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Yanis Boumber
- Robert H Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL 60611, USA
- Division of Hematology/Oncology, Section of Thoracic Head and Neck Medical Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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Bychkov I, Topchu I, Makhov P, Kudinov A, Patel JD, Boumber Y. Regulation of VEGFR2 and AKT signaling by Musashi-2 in lung cancer. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.29.534783. [PMID: 37034813 PMCID: PMC10081235 DOI: 10.1101/2023.03.29.534783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Lung cancer is the most frequently diagnosed cancer type and the leading cause of cancer-related deaths worldwide. Non-small cell lung cancer (NSCLC) represents most of the lung cancer. Vascular endothelial growth factor receptor-2 (VEGFR2) is a member of the VEGF family of receptor tyrosine kinase proteins, expressed on both endothelial and tumor cells which is one of the key proteins contributing to cancer development and involved in drug resistance. We previously showed that Musashi-2 (MSI2) RNA-binding protein is associated with NSCLC progression by regulating several signaling pathways relevant to NSCLC. In this study, we performed Reverse Protein Phase Array (RPPA) analysis of murine lung cancer which nominated VEGFR2 protein as strongly positively regulated by MSI2. Next, we validated VEGFR2 protein regulation by MSI2 in several human NSCLC cell line models. Additionally, we found that MSI2 affected AKT signaling via negative PTEN mRNA translation regulation. In silico prediction analysis suggested that both VEGFR2 and PTEN mRNAs have predicted binding sites for MSI2. We next performed RNA immunoprecipitation coupled with quantitative PCR which confirmed that MSI2 directly binds to VEGFR2 and PTEN mRNAs, suggesting direct regulation mechanism. Finally, MSI2 expression positively correlated with VEGFR2 and VEGF-A protein levels in human NSCLC samples. We conclude that MSI2/VEGFR2 axis contributes to NSCLC progression and is worth further investigations and therapeutic targeting.
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Affiliation(s)
- Igor Bychkov
- Robert H Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL 60611
| | - Iuliia Topchu
- Robert H Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL 60611
| | - Petr Makhov
- Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, PA 19111
| | - Alexander Kudinov
- Cardiology Department, University of Illinois in Chicago; address - 840 S. Wood Street Chicago, IL, 60612
| | - Jyoti D. Patel
- Division of Hematology/Oncology, Section of Thoracic Head and Neck Medical Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Yanis Boumber
- Robert H Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL 60611
- Division of Hematology/Oncology, Section of Thoracic Head and Neck Medical Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
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Production and Conjugation of Truncated Recombinant Diphtheria Toxin to VEGFR-2 Specific Nanobody and Evaluation of its Cytotoxic Effect on PC-3 Cell Line. Mol Biotechnol 2022; 64:1218-1226. [PMID: 35478310 DOI: 10.1007/s12033-022-00485-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 03/25/2022] [Indexed: 10/18/2022]
Abstract
Immunotoxins have represented a great potency in targeted therapeutics to encounter tumors. They consist of a protein toxin conjugated to a targeting moiety, which recognizes a specific antigen on surface of cancer cells and accordingly induces cell death by toxin segment. The targeting part could be a nanobody, which is a group of antibodies composed of an only functional single variable heavy chain (VHH).Therefore, this study was done to produce an immunotoxin (VGRNb-DT) by chemical conjugation of a truncated diphtheria toxin moiety to an anti-vascular endothelial growth factor receptor 2(VEGFR-2) nanobody, and to identify effectiveness of immunotoxin in recognizing the VEGFR-2- positive cancer cells and inhibiting cell growth and survival. Diphtheria toxin was expressed and purified by nickel affinity chromatography, and accordingly, sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blot analysis confirmed its expression. Function of heterobifunctional crosslinkers, Sulfo-SMCC (sulfosuccinimidyl-4-(N-maleimidomethyl) cyclohexane-1-carboxylate), and SATP (N-succinimidyl-S- acetylthiopropionate) for bioconjugation purposes was acknowledged by cation exchange high-performance liquid chromatography (HPLC). Cytotoxicity of immunotoxin was evaluated on the VEGFR-2 positive PC-3 cell line by MTT assay. Overexpression of VEGFR-2 in the PC-3 cell line allowed immunotoxin to recognize them by anti-VEGFR-2 nanobodies. The concentrations above 5 μg/ml represented a significant decrease in cell survival rate in PC-3 cells compared to HEK293 cells (VEGFR-2 negative cells) as controls.VGRNb-DT demonstrated a successful bioconjugation; furthermore, variable concentrations were correlated with cell death in prostate cancer PC-3 cells.
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Veillon R, Sakai H, Le X, Felip E, Cortot AB, Egbert S, Park K, Griesinger F, Britschgi C, Wu YL, Melosky B, Baijal S, Jr GDC, Sedova M, Berghoff K, Otto G, Paik PK. Safety of Tepotinib in Patients with MET Exon 14 Skipping NSCLC and Recommendations for Management. Clin Lung Cancer 2022; 23:320-332. [PMID: 35466070 PMCID: PMC10068910 DOI: 10.1016/j.cllc.2022.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 03/11/2022] [Accepted: 03/12/2022] [Indexed: 11/03/2022]
Abstract
INTRODUCTION The MET inhibitor tepotinib demonstrated durable clinical activity in patients with advanced MET exon 14 (METex14) skipping NSCLC. We report detailed analyses of adverse events of clinical interest (AECIs) in VISION, including edema, a class effect of MET inhibitors. PATIENTS AND METHODS Incidence, management, and time to first onset/resolution were analyzed for all-cause AECIs, according to composite categories (edema, hypoalbuminemia, creatinine increase, and ALT/AST increase) or individual preferred terms (pleural effusion, nausea, diarrhea, and vomiting), for patients with METex14 skipping NSCLC in the phase II VISION trial. RESULTS Of 255 patients analyzed (median age: 72 years), edema, the most common AECI, was reported in 69.8% (grade 3, 9.4%; grade 4, 0%). Median time to first edema onset was 7.9 weeks (range: 0.1-58.3). Edema was manageable with supportive measures, dose reduction (18.8%), and/or treatment interruption (23.1%), and rarely prompted discontinuation (4.3%). Other AECIs were also manageable and predominantly mild/moderate: hypoalbuminemia, 23.9% (grade 3, 5.5%); pleural effusion, 13.3% (grade ≥ 3, 5.1%); creatinine increase, 25.9% (grade 3, 0.4%); nausea, 26.7% (grade 3, 0.8%), diarrhea, 26.3% (grade 3, 0.4%), vomiting 12.9% (grade 3, 1.2%), and ALT/AST increase, 12.2% (grade ≥ 3, 3.1%). GI AEs typically occurred early and resolved in the first weeks. CONCLUSION Tepotinib was well tolerated in the largest trial of a MET inhibitor in METex14 skipping NSCLC. The most frequent AEs were largely mild/moderate and manageable with supportive measures and/or dose reduction/interruption, and caused few withdrawals in this elderly population.
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Choy E, Cote GM, Michaelson MD, Wirth L, Gainor JF, Muzikansky A, Sequist LV, Sullivan RJ, Fidias PM, Shaw A, Heist RS. OUP accepted manuscript. Oncologist 2022; 27:600-606. [PMID: 35524758 PMCID: PMC9256024 DOI: 10.1093/oncolo/oyac083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 03/14/2022] [Indexed: 11/23/2022] Open
Abstract
Bone metastases are often difficult to manage as they can be symptomatic and skeletal-related events (SREs) can contribute to significant morbidity and declines in performance status. We sought to identify a novel medical treatment for bone metastasis by testing the safety and efficacy of cabozantinib in patients with bone metastasis arising from non-breast, non-prostate, malignant solid tumors. Patients were administered cabozantinib as an oral drug starting at 60 mg per day and radiologic measurements were performed at baseline and every 8 weeks. Thirty-seven patients were enrolled. No SREs were observed throughout the study. Twenty patients had disease measurable by Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1. Four of 20 had a partial response by RECIST. An additional 12 patients had some decrease in tumor burden with nine of these having a decrease in tumor burden of at least 10% by RECIST. Six of the patients with at least a minor response had sarcoma. Sixteen patients had biomarkers of bone turnover measured before and after treatment. Most of these patients demonstrated decrease in urine and serum N-telopeptide and serum C-telopeptide. However, these changes in biomarkers of bone turnover did not correlate with radiographic changes measured by RECIST. This study demonstrates clinical activity and safety for cabozantinib in heavily pretreated patients with bone metastasis and shows activity for cabozantinib in patients with metastatic sarcoma.
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Affiliation(s)
- Edwin Choy
- Corresponding author: Edwin Choy, MD, Division of Hematology Oncology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA.
| | - Gregory M Cote
- Division of Hematology Oncology, Massachusetts General Hospital, Massachusetts General Hospital Cancer Center, Boston, MA, USA
| | - M Dror Michaelson
- Division of Hematology Oncology, Massachusetts General Hospital, Massachusetts General Hospital Cancer Center, Boston, MA, USA
| | - Lori Wirth
- Division of Hematology Oncology, Massachusetts General Hospital, Massachusetts General Hospital Cancer Center, Boston, MA, USA
| | - Justin F Gainor
- Division of Hematology Oncology, Massachusetts General Hospital, Massachusetts General Hospital Cancer Center, Boston, MA, USA
| | - Alona Muzikansky
- Massachusetts General Hospital Biostatistics Center, Boston, MA, USA
- Massachusetts General Hospital Cancer Center, Boston, MA, USA
| | - Lecia V Sequist
- Division of Hematology Oncology, Massachusetts General Hospital, Massachusetts General Hospital Cancer Center, Boston, MA, USA
| | - Ryan J Sullivan
- Division of Hematology Oncology, Massachusetts General Hospital, Massachusetts General Hospital Cancer Center, Boston, MA, USA
| | - Panagiotis M Fidias
- Division of Hematology Oncology, Massachusetts General Hospital, Massachusetts General Hospital Cancer Center, Boston, MA, USA
- Medical Oncology, Center for Cancer Care, Exeter Hospital, Exeter, NH, USA
| | - Alice Shaw
- Division of Hematology Oncology, Massachusetts General Hospital, Massachusetts General Hospital Cancer Center, Boston, MA, USA
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - Rebecca S Heist
- Division of Hematology Oncology, Massachusetts General Hospital, Massachusetts General Hospital Cancer Center, Boston, MA, USA
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Wiszniak S, Schwarz Q. Exploring the Intracrine Functions of VEGF-A. Biomolecules 2021; 11:biom11010128. [PMID: 33478167 PMCID: PMC7835749 DOI: 10.3390/biom11010128] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 12/16/2022] Open
Abstract
Vascular endothelial growth factor A (VEGF-A or VEGF) is a highly conserved secreted signalling protein best known for its roles in vascular development and angiogenesis. Many non-endothelial roles for VEGF are now established, with the discovery that VEGF and its receptors VEGFR1 and VEGFR2 are expressed in many non-vascular cell-types, as well as various cancers. In addition to secreted VEGF binding to its receptors in the extracellular space at the cell membrane (i.e., in a paracrine or autocrine mode), intracellularly localised VEGF is emerging as an important signalling molecule regulating cell growth, survival, and metabolism. This intracellular mode of signalling has been termed “intracrine”, and refers to the direct action of a signalling molecule within the cell without being secreted. In this review, we describe examples of intracrine VEGF signalling in regulating cell growth, differentiation and survival, both in normal cell homeostasis and development, as well as in cancer. We further discuss emerging evidence for the molecular mechanisms underpinning VEGF intracrine function, as well as the implications this intracellular mode of VEGF signalling may have for use and design of anti-VEGF cancer therapeutics.
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Baird RD, Linossi C, Middleton M, Lord S, Harris A, Rodón J, Zitt C, Fiedler U, Dawson KM, Leupin N, Stumpp MT, Harstrick A, Azaro A, Fischer S, Omlin A. First-in-Human Phase I Study of MP0250, a First-in-Class DARPin Drug Candidate Targeting VEGF and HGF, in Patients With Advanced Solid Tumors. J Clin Oncol 2021; 39:145-154. [PMID: 33301375 PMCID: PMC8196087 DOI: 10.1200/jco.20.00596] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/18/2020] [Accepted: 10/13/2020] [Indexed: 12/13/2022] Open
Abstract
PURPOSE A first-in-human study was performed with MP0250, a DARPin drug candidate. MP0250 specifically inhibits both vascular endothelial growth factor (VEGF) and hepatocyte growth factor (HGF) with the aim of disrupting the tumor microenvironment. PATIENTS AND METHODS A multicenter, open-label, repeated-dose, phase I study was conducted to assess the safety, tolerability, and pharmacokinetics of MP0250 in 45 patients with advanced solid tumors. In the dose-escalation part, 24 patients received MP0250 as a 3-hour infusion once every 2 weeks at five different dose levels (0.5-12 mg/kg). Once the maximum tolerated dose (MTD) was established, 21 patients were treated with a 1-hour infusion (n = 13, 8 mg/kg, once every 2 weeks and n = 8, 12 mg/kg, once every 3 weeks) of MP0250 in the dose confirmation cohorts. RESULTS In the dose-escalation cohort, patients treated with 12 mg/kg MP0250 once every 2 weeks experienced dose-limiting toxicities. Therefore, MTD was 8 mg/kg once every 2 weeks or 12 mg/kg once every 3 weeks. The most common adverse events (AEs) were hypertension (69%), proteinuria (51%), and diarrhea and nausea (both 36%); hypoalbuminemia was reported in 24% of patients. Most AEs were consistent with inhibition of the VEGF and HGF pathways. Exposure was dose-proportional and sustained throughout the dosing period for all patients (up to 15 months). The half-life was about 2 weeks. Signs of single-agent antitumor activity were observed: 1 unconfirmed partial response with a time to progression of 23 weeks and 24 patients with stable disease, with the longest duration of 72 weeks and a median duration of 18 weeks. CONCLUSION MP0250 is a first-in-class DARPin drug candidate with suitable tolerability and appropriate pharmacokinetic properties for further development in combination with other anticancer therapies.
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Affiliation(s)
| | | | | | - Simon Lord
- University of Oxford, Oxford, United Kingdom
| | | | - Jordi Rodón
- MD Anderson Cancer Center, Houston, TX
- Vall d’Hebron University Hospital, Vall d’Hebron, Spain
| | - Christof Zitt
- Molecular Partners AG, Schlieren-Zürich, Switzerland
| | | | | | | | | | | | - Analía Azaro
- Vall d’Hebron University Hospital, Vall d’Hebron, Spain
| | - Stefanie Fischer
- Manchester Cancer Research Centre, Manchester, United Kingdom
- Cantonal Hospital St Gallen, St Gallen, Switzerland
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8
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Ionizing Radiation Regulates Vascular Endothelial Growth Factor-A Transcription in Cultured Human Vascular Endothelial Cells Via the PERK/eIF2α/ATF4 Pathway. Int J Radiat Oncol Biol Phys 2020; 107:563-570. [DOI: 10.1016/j.ijrobp.2020.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 02/27/2020] [Accepted: 03/02/2020] [Indexed: 01/24/2023]
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Fibronectin Adsorption on Electrospun Synthetic Vascular Grafts Attracts Endothelial Progenitor Cells and Promotes Endothelialization in Dynamic In Vitro Culture. Cells 2020; 9:cells9030778. [PMID: 32210018 PMCID: PMC7140838 DOI: 10.3390/cells9030778] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/15/2020] [Accepted: 03/19/2020] [Indexed: 12/30/2022] Open
Abstract
Appropriate mechanical properties and fast endothelialization of synthetic grafts are key to ensure long-term functionality of implants. We used a newly developed biostable polyurethane elastomer (TPCU) to engineer electrospun vascular scaffolds with promising mechanical properties (E-modulus: 4.8 ± 0.6 MPa, burst pressure: 3326 ± 78 mmHg), which were biofunctionalized with fibronectin (FN) and decorin (DCN). Neither uncoated nor biofunctionalized TPCU scaffolds induced major adverse immune responses except for minor signs of polymorph nuclear cell activation. The in vivo endothelial progenitor cell homing potential of the biofunctionalized scaffolds was simulated in vitro by attracting endothelial colony-forming cells (ECFCs). Although DCN coating did attract ECFCs in combination with FN (FN + DCN), DCN-coated TPCU scaffolds showed a cell-repellent effect in the absence of FN. In a tissue-engineering approach, the electrospun and biofunctionalized tubular grafts were cultured with primary-isolated vascular endothelial cells in a custom-made bioreactor under dynamic conditions with the aim to engineer an advanced therapy medicinal product. Both FN and FN + DCN functionalization supported the formation of a confluent and functional endothelial layer.
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Viswanathan A, Musa A, Murugesan A, Vale JR, Afonso CAM, Konda Mani S, Yli-Harja O, Candeias NR, Kandhavelu M. Battling Glioblastoma: A Novel Tyrosine Kinase Inhibitor with Multi-Dimensional Anti-Tumor Effect (Running Title: Cancer Cells Death Signalling Activation). Cells 2019; 8:cells8121624. [PMID: 31842391 PMCID: PMC6953096 DOI: 10.3390/cells8121624] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/07/2019] [Accepted: 12/09/2019] [Indexed: 12/27/2022] Open
Abstract
Glioblastoma (GB), a grade IV glioma, with high heterogeneity and chemoresistance, obligates a multidimensional antagonist to debilitate its competence. Considering the previous reports on thioesters as antitumor compounds, this paper investigates on use of this densely functionalized sulphur rich molecule as a potent anti-GB agent. Bio-evaluation of 12 novel compounds, containing α-thioether ketone and orthothioester functionalities, identified that five analogs exhibited better cytotoxic profile compared to standard drug cisplatin. Detailed toxicity studies of top compound were evaluated in two cell lines, using cell viability test, apoptotic activity, oxidative stress and caspase activation and RNA-sequencing analysis, to obtain a comprehensive molecular profile of drug activity. The most effective molecule presented half maximal inhibitory concentration (IC50) values of 27 μM and 23 μM against U87 and LN229 GB cells, respectively. Same compound effectively weakened various angiogenic pathways, mainly MAPK and JAK-STAT pathways, downregulating VEGF. Transcriptome analysis identified significant promotion of apoptotic genes, and genes involved in cell cycle arrest, with concurrent inhibition of various tyrosine kinase cascades and stress response genes. Docking and immunoblotting studies suggest EGFR as a strong target of the orthothioester identified. Therefore, orthothioesters can potentially serve as a multi-dimensional chemotherapeutic possessing strong cytotoxic, anti-angiogenic and chemo-sensitization activity, challenging glioblastoma pathogenesis.
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Affiliation(s)
- Anisha Viswanathan
- Molecular Signaling Lab, Faculty of Medicine and Health Technology, Tampere University, BioMeditech and Tays Cancer Center, Tampere University Hospital, P.O. Box 553, 33101 Tampere, Finland; (A.V.); (A.M.)
| | - Aliyu Musa
- Predictive Medicine and Data Analytics Lab, Faculty of Medicine and Health Technology, Tampere University and BioMediTech, P.O. Box 553, 33101 Tampere, Finland;
| | - Akshaya Murugesan
- Molecular Signaling Lab, Faculty of Medicine and Health Technology, Tampere University, BioMeditech and Tays Cancer Center, Tampere University Hospital, P.O. Box 553, 33101 Tampere, Finland; (A.V.); (A.M.)
- Department of Biotechnology, Lady Doak College, Madurai 625002, India
| | - João R. Vale
- Faculty of Engineering and Natural Sciences, Tampere University, 33101 Tampere, Finland;
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal;
| | - Carlos A. M. Afonso
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal;
| | - Saravanan Konda Mani
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China;
| | - Olli Yli-Harja
- Computational Systems Biology Group, Faculty of Medicine and Health Technology, Tampere University and BioMediTech, P.O. Box 553, 33101 Tampere, Finland;
- Institute for Systems Biology, 1441N 34th Street, Seattle, WA 98103-8904, USA
| | - Nuno R. Candeias
- Faculty of Engineering and Natural Sciences, Tampere University, 33101 Tampere, Finland;
- Correspondence: (N.R.C.); (M.K.); Tel.: +358-468857306 (N.R.C.); +358-417488772 (M.K.)
| | - Meenakshisundaram Kandhavelu
- Molecular Signaling Lab, Faculty of Medicine and Health Technology, Tampere University, BioMeditech and Tays Cancer Center, Tampere University Hospital, P.O. Box 553, 33101 Tampere, Finland; (A.V.); (A.M.)
- Correspondence: (N.R.C.); (M.K.); Tel.: +358-468857306 (N.R.C.); +358-417488772 (M.K.)
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Chang TK, Lawrence DA, Lu M, Tan J, Harnoss JM, Marsters SA, Liu P, Sandoval W, Martin SE, Ashkenazi A. Coordination between Two Branches of the Unfolded Protein Response Determines Apoptotic Cell Fate. Mol Cell 2019; 71:629-636.e5. [PMID: 30118681 DOI: 10.1016/j.molcel.2018.06.038] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 05/16/2018] [Accepted: 06/25/2018] [Indexed: 12/31/2022]
Abstract
The kinases PERK and IRE1 alleviate endoplasmic reticulum (ER) stress by orchestrating the unfolded protein response (UPR). If stress mitigation fails, PERK promotes cell death by activating pro-apoptotic genes, including death receptor 5 (DR5). Conversely, IRE1-which harbors both kinase and endoribonuclease (RNase) modules-blocks apoptosis through regulated IRE1-dependent decay (RIDD) of DR5 mRNA. Under irresolvable ER stress, PERK activity persists, whereas IRE1 paradoxically attenuates, by mechanisms that remain obscure. Here, we report that PERK governs IRE1's attenuation through a phosphatase known as RPAP2 (RNA polymerase II-associated protein 2). RPAP2 reverses IRE1 phosphorylation, oligomerization, and RNase activation. This inhibits IRE1-mediated adaptive events, including activation of the cytoprotective transcription factor XBP1s, and ER-associated degradation of unfolded proteins. Furthermore, RIDD termination by RPAP2 unleashes DR5-mediated caspase activation and drives cell death. Thus, PERK attenuates IRE1 via RPAP2 to abort failed ER-stress adaptation and trigger apoptosis.
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Affiliation(s)
- Tsun-Kai Chang
- Cancer Immunology, Genentech, Inc., South San Francisco, CA 94080, USA
| | - David A Lawrence
- Cancer Immunology, Genentech, Inc., South San Francisco, CA 94080, USA
| | - Min Lu
- Cancer Immunology, Genentech, Inc., South San Francisco, CA 94080, USA
| | - Jenille Tan
- Discovery Oncology, Genentech, Inc., South San Francisco, CA 94080, USA
| | | | - Scot A Marsters
- Cancer Immunology, Genentech, Inc., South San Francisco, CA 94080, USA
| | - Peter Liu
- Microchemistry Proteomics and Lipidomics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Wendy Sandoval
- Microchemistry Proteomics and Lipidomics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Scott E Martin
- Discovery Oncology, Genentech, Inc., South San Francisco, CA 94080, USA
| | - Avi Ashkenazi
- Cancer Immunology, Genentech, Inc., South San Francisco, CA 94080, USA.
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12
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Fiedler U, Ekawardhani S, Cornelius A, Gilboy P, Bakker TR, Dolado I, Stumpp MT, Dawson KM. MP0250, a VEGF and HGF neutralizing DARPin ® molecule shows high anti-tumor efficacy in mouse xenograft and patient-derived tumor models. Oncotarget 2017; 8:98371-98383. [PMID: 29228696 PMCID: PMC5716736 DOI: 10.18632/oncotarget.21738] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 09/21/2017] [Indexed: 01/13/2023] Open
Abstract
Background The VEGF/VEGFR and the HGF/cMET pathways are key mediators of the interplay of tumor cells and their microenvironment. However, inhibition of VEGF has been shown to produce only limited clinical benefit and inhibition of the activation of cMET by HGF has not translated into clinical benefit in pivotal trials. MP0250, a DARPin® molecule that specifically inhibits both VEGF and HGF has been developed to explore the clinical potential of dual inhibition of these pathways. Results MP0250 binding to VEGF and HGF inhibited downstream signalling through VEGFR2 and cMET resulting in inhibition of proliferation of VEGF- and HGF-dependent cells. Antitumor activity was demonstrated in VEGF- and HGF-dependent xenograft and syngeneic models with activity superior to that of individual VEGF- and HGF-blocking DARPin® molecules. Combination therapy studies showed potentiation of the antitumor activity of chemotherapy and immunotherapy agents, including an anti-PD1 antibody. Materials and Methods Potency of MP0250 was assessed in cellular models and in a variety of xenograft models as monotherapy or in combination with standard-of-care drugs. Conclusions Dual inhibition of VEGF and HGF by MP0250 produced powerful single agent and combination antitumor activity. This, together with increasing understanding of the role of the HGF/cMET pathway in resistance to VEGF (and other agents), supports testing of MP0250 in the clinic.
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Affiliation(s)
| | | | | | - Pat Gilboy
- Molecular Partners AG, Schlieren, Switzerland.,Horizon Pharma, Dublin, Ireland
| | - Talitha R Bakker
- Molecular Partners AG, Schlieren, Switzerland.,Amgen (Europe) GmbH, Zug, Switzerland
| | - Ignacio Dolado
- Molecular Partners AG, Schlieren, Switzerland.,Roche, Basel, Switzerland
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