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Streuer A, Jann JC, Boch T, Mossner M, Riabov V, Schmitt N, Altrock E, Xu Q, Demmerle M, Nowak V, Oblaender J, Palme I, Weimer N, Rapp F, Metzgeroth G, Hecht A, Höger T, Merz C, Hofmann WK, Nolte F, Nowak D. Treatment with the apoptosis inhibitor Asunercept reduces clone sizes in patients with lower risk Myelodysplastic Neoplasms. Ann Hematol 2024; 103:1221-1233. [PMID: 38413410 PMCID: PMC10940491 DOI: 10.1007/s00277-024-05664-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 02/14/2024] [Indexed: 02/29/2024]
Abstract
In low-risk Myelodysplastic Neoplasms (MDS), increased activity of apoptosis-promoting factors such as tumor necrosis factor (TNFα) and pro-apoptotic Fas ligand (CD95L) have been described as possible pathomechanisms leading to impaired erythropoiesis. Asunercept (APG101) is a novel therapeutic fusion protein blocking CD95, which has previously shown partial efficacy in reducing transfusion requirement in a clinical phase I trial for low-risk MDS patients (NCT01736436; 2012-11-26). In the current study we aimed to evaluate the effect of Asunercept therapy on the clonal bone marrow composition to identify potential biomarkers to predict response. Bone marrow samples of n = 12 low-risk MDS patients from the above referenced clinical trial were analyzed by serial deep whole exome sequencing in a total of n = 58 time points. We could distinguish a mean of 3.5 molecularly defined subclones per patient (range 2-6). We observed a molecular response defined as reductions of dominant clone sizes by a variant allele frequency (VAF) decrease of at least 10% (mean 20%, range: 10.5-39.2%) in dependency of Asunercept treatment in 9 of 12 (75%) patients. Most of this decline in clonal populations was observed after completion of 12 weeks treatment. Particularly early and pronounced reductions of clone sizes were found in subclones driven by mutations in genes involved in regulation of methylation (n = 1 DNMT3A, n = 1 IDH2, n = 1 TET2). Our results suggest that APG101 could be efficacious in reducing clone sizes of mutated hematopoietic cells in the bone marrow of Myelodysplastic Neoplasms, which warrants further investigation.
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Affiliation(s)
- Alexander Streuer
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany.
| | - Johann-Christoph Jann
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Tobias Boch
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Maximilian Mossner
- Centre for Genomics and Computational Biology, Barts Cancer Institute, London, UK
| | - Vladimir Riabov
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Nanni Schmitt
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Eva Altrock
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Qingyu Xu
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Marie Demmerle
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Verena Nowak
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Julia Oblaender
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Iris Palme
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Nadine Weimer
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Felicitas Rapp
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Georgia Metzgeroth
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Anna Hecht
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | | | | | - Wolf-Karsten Hofmann
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Florian Nolte
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
| | - Daniel Nowak
- Department of Hematology and Oncology, Medical Faculty Mannheim of the Heidelberg University, Pettenkoferstr. 22, 68169, Mannheim, Germany
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Cook KD, Tran T, Thomas VA, Devanaboyina SC, Rock DA, Pearson JT. Correlation of In Vitro Kinetic Stability to Preclinical In Vivo Pharmacokinetics for a Panel of Anti-PD-1 Monoclonal Antibody Interleukin 21 Mutein Immunocytokines. Drug Metab Dispos 2024; 52:228-235. [PMID: 38135505 DOI: 10.1124/dmd.123.001555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 12/24/2023] Open
Abstract
The development of therapeutic fusion protein drugs is often impeded by the unintended consequences that occur from fusing together domains from independent naturally occurring proteins, consequences such as altered biodistribution, tissue uptake, or rapid clearance and potential immunogenicity. For therapeutic fusion proteins containing globular domains, we hypothesized that aberrant in vivo behavior could be related to low kinetic stability of these domains leading to local unfolding and susceptibility to partial proteolysis and/or salvage and uptake. Herein we describe an assay to measure kinetic stability of therapeutic fusion proteins by way of their sensitivity to the protease thermolysin. The results indicate that in vivo pharmacokinetics of a panel of anti-programmed cell death protein 1 monocolonal antibody:interleukin 21 immunocytokines in both mice and nonhuman primates are highly correlated with their in vitro susceptibility to thermolysin-mediated proteolysis. This assay can be used as a tool to quickly identify in vivo liabilities of globular domains of therapeutic proteins, thus aiding in the optimization and development of new multispecific drug candidates. SIGNIFICANCE STATEMENT: This work describes a novel assay utilizing protein kinetic stability to identify preclinical in vivo pharmacokinetic liabilities of multispecific therapeutic fusion proteins. This provides an efficient, inexpensive method to ascertain inherent protein stability in vitro before conducting in vivo studies, which can rapidly increase the speed of preclinical drug development.
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Affiliation(s)
- Kevin D Cook
- Amgen Research, Pharmacokinetics & Drug Metabolism, South San Francisco, California
| | - Thuy Tran
- Amgen Research, Pharmacokinetics & Drug Metabolism, South San Francisco, California
| | - Veena A Thomas
- Amgen Research, Pharmacokinetics & Drug Metabolism, South San Francisco, California
| | | | - Dan A Rock
- Amgen Research, Pharmacokinetics & Drug Metabolism, South San Francisco, California
| | - Josh T Pearson
- Amgen Research, Pharmacokinetics & Drug Metabolism, South San Francisco, California
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Chang IYF, Tsai HC, Chen CH, Chen HC, Huang CW, Cox GF, Huang FM, Lin YY, Chen KT, Lin YJ, Wei KC. CAN008 prolongs overall survival in patients with newly diagnosed GBM characterized by high tumor mutational burden. Biomed J 2023:100660. [PMID: 37741340 DOI: 10.1016/j.bj.2023.100660] [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: 05/29/2023] [Revised: 07/31/2023] [Accepted: 09/15/2023] [Indexed: 09/25/2023] Open
Abstract
BACKGROUND A previous phase 1 dose-escalation study in Taiwan indicated CAN008 (asunercept) with standard concurrent chemoradiotherapy (CCRT) improved progression-free survival (PFS) in newly diagnosed glioblastoma (GBM) patients. This study evaluates the efficacy of CAN008 in promoting overall survival (OS) and identifies genetic alterations associated with treatment responses. METHODS We compared OS of 5-year follow-ups from 9 evaluable CAN008 cohort patients (6 received high-dose and 3 received low-dose) to a historical Taiwanese GBM cohort with 164 newly diagnosed patients. CAN008 treatment response-associated genetic alterations were identified by whole-exome sequencing and comparing variant differences between response groups. Associations among patient survival, tumor mutational burden (TMB), and genetic alterations were analyzed using CAN008 cohort and TCGA-GBM dataset. RESULTS OS for high-dose CAN008 patients at 2 and 5 years was 83% and 67%, respectively, and 40.1% and 8.8% for the historical GBM cohort, respectively. Better OS was observed in the high-dose CAN008 cohort (without reaching the median survival) than the historical GBM cohort (median OS: 20 months; p=0.0103). Five high-dose CAN008 patients were divided into good and poor response groups based on their PFS. A higher variant count and TMB were observed in good response patients, whereas no significant association was observed between TMB and patient survival in the newly diagnosed TCGA-GBM dataset, suggesting TMB may modulate patient CAN008 response. CONCLUSION CAN008 combined with standard CCRT treatment prolonged the PFS and OS of newly diagnosed GBM patients compared to standard therapy alone. Higher treatment efficacy was associated with higher TMB.
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Affiliation(s)
- Ian Yi-Feng Chang
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan; Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan
| | - Hong-Chieh Tsai
- School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan
| | - Chia-Hua Chen
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Hsiu-Chi Chen
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Chia-Wen Huang
- School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Neurosurgery, New Taipei Municipal TuCheng Hospital, New Taipei City, Taiwan
| | | | | | - You-Yu Lin
- Genome and Systems Biology Degree Program, Academia Sinica and National Taiwan University, Taipei
| | - Ko-Ting Chen
- School of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan; Neuroscience Research Center, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan
| | - Ya-Jui Lin
- School of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan; Neuroscience Research Center, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan
| | - Kuo-Chen Wei
- School of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan; Neuroscience Research Center, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan; Department of Neurosurgery, New Taipei Municipal TuCheng Hospital, New Taipei City, Taiwan.
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Zhang Y, Jin T, Dou Z, Wei B, Zhang B, Sun C. The dual role of the CD95 and CD95L signaling pathway in glioblastoma. Front Immunol 2022; 13:1029737. [PMID: 36505426 PMCID: PMC9730406 DOI: 10.3389/fimmu.2022.1029737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 11/09/2022] [Indexed: 11/25/2022] Open
Abstract
Binding of CD95, a cell surface death receptor, to its homologous ligand CD95L, transduces a cascade of downstream signals leading to apoptosis crucial for immune homeostasis and immune surveillance. Although CD95 and CD95L binding classically induces programmed cell death, most tumor cells show resistance to CD95L-induced apoptosis. In some cancers, such as glioblastoma, CD95-CD95L binding can exhibit paradoxical functions that promote tumor growth by inducing inflammation, regulating immune cell homeostasis, and/or promoting cell survival, proliferation, migration, and maintenance of the stemness of cancer cells. In this review, potential mechanisms such as the expression of apoptotic inhibitor proteins, decreased activity of downstream elements, production of nonapoptotic soluble CD95L, and non-apoptotic signals that replace apoptotic signals in cancer cells are summarized. CD95L is also expressed by other types of cells, such as endothelial cells, polymorphonuclear myeloid-derived suppressor cells, cancer-associated fibroblasts, and tumor-associated microglia, and macrophages, which are educated by the tumor microenvironment and can induce apoptosis of tumor-infiltrating lymphocytes, which recognize and kill cancer cells. The dual role of the CD95-CD95L system makes targeted therapy strategies against CD95 or CD95L in glioblastoma difficult and controversial. In this review, we also discuss the current status and perspective of clinical trials on glioblastoma based on the CD95-CD95L signaling pathway.
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Affiliation(s)
- Yanrui Zhang
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Taian Jin
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Zhangqi Dou
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Boxing Wei
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Buyi Zhang
- Department of Pathology, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China,*Correspondence: Buyi Zhang, ; Chongran Sun,
| | - Chongran Sun
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China,Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou, Zhejiang, China,Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, Zhejiang, China,*Correspondence: Buyi Zhang, ; Chongran Sun,
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Risso V, Lafont E, Le Gallo M. Therapeutic approaches targeting CD95L/CD95 signaling in cancer and autoimmune diseases. Cell Death Dis 2022; 13:248. [PMID: 35301281 PMCID: PMC8931059 DOI: 10.1038/s41419-022-04688-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 02/09/2022] [Accepted: 02/24/2022] [Indexed: 12/14/2022]
Abstract
Cell death plays a pivotal role in the maintenance of tissue homeostasis. Key players in the controlled induction of cell death are the Death Receptors (DR). CD95 is a prototypic DR activated by its cognate ligand CD95L triggering programmed cell death. As a consequence, alterations in the CD95/CD95L pathway have been involved in several disease conditions ranging from autoimmune diseases to inflammation and cancer. CD95L-induced cell death has multiple roles in the immune response since it constitutes one of the mechanisms by which cytotoxic lymphocytes kill their targets, but it is also involved in the process of turning off the immune response. Furthermore, beyond the canonical pro-death signals, CD95L, which can be membrane-bound or soluble, also induces non-apoptotic signaling that contributes to its tumor-promoting and pro-inflammatory roles. The intent of this review is to describe the role of CD95/CD95L in the pathophysiology of cancers, autoimmune diseases and chronic inflammation and to discuss recently patented and emerging therapeutic strategies that exploit/block the CD95/CD95L system in these diseases.
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Affiliation(s)
- Vesna Risso
- INSERM U1242, Oncogenesis Stress Signaling, University of Rennes, Rennes, France
- Centre de lutte contre le cancer Eugène Marquis, Rennes, France
| | - Elodie Lafont
- INSERM U1242, Oncogenesis Stress Signaling, University of Rennes, Rennes, France
- Centre de lutte contre le cancer Eugène Marquis, Rennes, France
| | - Matthieu Le Gallo
- INSERM U1242, Oncogenesis Stress Signaling, University of Rennes, Rennes, France.
- Centre de lutte contre le cancer Eugène Marquis, Rennes, France.
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Wei KC, Hsu PW, Tsai HC, Lin YJ, Chen KT, Toh CH, Huang HL, Jung SM, Tseng CK, Ke YX. Safety and tolerability of asunercept plus standard radiotherapy/temozolomide in Asian patients with newly-diagnosed glioblastoma: a phase I study. Sci Rep 2021; 11:24067. [PMID: 34911992 PMCID: PMC8674255 DOI: 10.1038/s41598-021-02527-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 10/13/2021] [Indexed: 11/09/2022] Open
Abstract
Asunercept (company code APG101 [Apogenix AG]; company code CAN008 [CANbridge Pharmaceuticals]) is a novel glycosylated fusion protein that has shown promising effectiveness in glioblastoma. This Phase I study was initiated to evaluate the tolerability and safety of asunercept in combination with standard radiotherapy and temozolomide (RT/TMZ) in Asian patients with newly diagnosed glioblastoma. This was the Phase I portion of a Phase I/II open label, multicenter trial of asunercept plus standard RT/TMZ. Adults with newly-diagnosed glioblastoma received surgical resection followed by standard RT/TMZ plus asunercept 200 mg/week (Cohort 1) or 400 mg/week (Cohort 2) by 30-min IV infusion. The primary endpoint was the safety and tolerability of asunercept during concurrent asunercept and RT/TMZ; dose-limiting toxicities were observed for each dose. Secondary endpoints included pharmacokinetics (PK) and 6-month progression-free survival (PFS6). All patients (Cohort 1, n = 3; Cohort 2, n = 7) completed ≥ 7 weeks of asunercept treatment. No DLTs were experienced. Only one possibly treatment-related treatment emergent adverse event (TEAE), Grade 1 gingival swelling, was observed. No Grade > 3 TEAEs were reported and no TEAE led to treatment discontinuation. Systemic asunercept exposure increased proportionally with dose and showed low inter-patient variability. The PFS6 rate was 33.3% and 57.1% for patients in Cohort 1 and 2, respectively. Patients in Cohort 2 maintained a PFS rate of 57.1% at Month 12. Adding asunercept to standard RT/TMZ was safe and well tolerated in patients with newly-diagnosed glioblastoma and 400 mg/week resulted in encouraging efficacy. Trial registration NCT02853565, August 3, 2016.
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Affiliation(s)
- Kuo-Chen Wei
- Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou, 5 Fuxing St., Guishan Dist., Taoyuan, 33305, Taiwan. .,School of Medicine, Chang Gung University, 259 Wenhua 1st Rd., Guishan Dist., Taoyuan, 33302, Taiwan.
| | - Peng-Wei Hsu
- Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou, 5 Fuxing St., Guishan Dist., Taoyuan, 33305, Taiwan
| | - Hong-Chieh Tsai
- Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou, 5 Fuxing St., Guishan Dist., Taoyuan, 33305, Taiwan.,Graduate Institute of Clinical Medical Sciences and School of Traditional Chinese Medicine, Chang Gung University, 259 Wenhua 1st Rd., Guishan Dist., Taoyuan, 33302, Taiwan
| | - Ya-Jui Lin
- Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou, 5 Fuxing St., Guishan Dist., Taoyuan, 33305, Taiwan
| | - Ko-Ting Chen
- Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou, 5 Fuxing St., Guishan Dist., Taoyuan, 33305, Taiwan
| | - Cheng-Hong Toh
- Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
| | - Hui-Lin Huang
- Clinical Trial Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
| | - Shih-Ming Jung
- Department of Pathology, Chang Gung Memorial Hospital, Linkou, 5 Fuxing St., Guishan Dist., Taoyuan, 33305, Taiwan
| | - Chen-Kan Tseng
- Department of Radiation Oncology, Chang Gung Memorial Hospital at Linkou, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Xiong Ke
- CANbridge Pharmaceuticals Inc., Shanghai, China
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Gattinger P, Izadi S, Grünwald-Gruber C, Kallolimath S, Castilho A. The Instability of Dimeric Fc-Fusions Expressed in Plants Can Be Solved by Monomeric Fc Technology. FRONTIERS IN PLANT SCIENCE 2021; 12:671728. [PMID: 34305971 PMCID: PMC8299721 DOI: 10.3389/fpls.2021.671728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 06/18/2021] [Indexed: 05/18/2023]
Abstract
The potential therapeutic value of many proteins is ultimately limited by their rapid in vivo clearance. One strategy to limit clearance by metabolism and excretion, and improving the stability of therapeutic proteins, is their fusion to the immunoglobulin fragment crystallizable region (Fc). The Fc region plays multiple roles in (i) dimerization for the formation of "Y"-shaped structure of Ig, (ii) Fc-mediated effector functions, (iii) extension of serum half-life, and (iv) a cost-effective purification tag. Plants and in particular Nicotiana benthamiana have proven to be suitable expression platforms for several recombinant therapeutic proteins. Despite the enormous success of their use for the production of full-length monoclonal antibodies, the expression of Fc-fused therapeutic proteins in plants has shown limitations. Many Fc-fusion proteins expressed in plants show different degrees of instability resulting in high amounts of Fc-derived degradation products. To address this issue, we used erythropoietin (EPO) as a reporter protein and evaluated the efforts to enhance the expression of full-length EPO-Fc targeted to the apoplast of N. benthamiana. Our results show that the instability of the fusion protein is independent from the Fc origin or IgG subclass and from the peptide sequence used to link the two domains. We also show that a similar instability occurs upon the expression of individual heavy chains of monoclonal antibodies and ScFv-Fc that mimic the "Y"-shape of antibodies but lack the light chain. We propose that in this configuration, steric hindrance between the protein domains leads to physical instability. Indeed, mutations of critical residues located on the Fc dimerization interface allowed the expression of fully stable EPO monomeric Fc-fusion proteins. We discuss the limitations of Fc-fusion technology in N. benthamiana transient expression systems and suggest strategies to optimize the Fc-based scaffolds on their folding and aggregation resistance in order to improve the stability.
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Affiliation(s)
- Pia Gattinger
- Department of Applied Genetics and Cell Biology, Institute for Plant Biotechnology and Cell Biology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Shiva Izadi
- Department of Applied Genetics and Cell Biology, Institute for Plant Biotechnology and Cell Biology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
- Department of Plant Genetics and Breeding, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Clemens Grünwald-Gruber
- Division of Biochemistry, Department of Chemistry, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
| | - Somanath Kallolimath
- Department of Applied Genetics and Cell Biology, Institute for Plant Biotechnology and Cell Biology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
| | - Alexandra Castilho
- Department of Applied Genetics and Cell Biology, Institute for Plant Biotechnology and Cell Biology, University of Natural Resources and Life Sciences Vienna, Vienna, Austria
- *Correspondence: Alexandra Castilho,
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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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9
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Krendyukov A, Gieffers C. Asunercept as an innovative therapeutic approach for recurrent glioblastoma and other malignancies. Cancer Manag Res 2019; 11:8095-8100. [PMID: 31564969 PMCID: PMC6730539 DOI: 10.2147/cmar.s216675] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 07/25/2019] [Indexed: 11/23/2022] Open
Abstract
Glioblastoma is the most common and aggressive malignant tumor of the central nervous system. Despite the existing high unmet medical needs, the past few decades have seen no notable improvement in overall survival for glioblastoma patients. One active area of research to develop new therapeutic options for this disease is focusing on the CD95/Fas receptor and its ligand CD95L/FasL. It is now recognized that in addition to its role in programmed cell death, CD95/CD95L signaling is involved in a wide range of other apoptotic and non-apoptotic pathways directed toward T-effector cells and cells in the tumor microenvironment involved in tumor progression and invasiveness. Asunercept is a first-in-class recombinant glycosylated fusion protein, which has been designed to selectively bind to CD95L and therefore disrupt CD95/CD95L signaling. The current report provides a brief overview of the role of the CD95/CD95L signaling pathway in cancer pathogenesis and discusses how asunercept was designed to bind and neutralize CD95L and disrupt signaling thereby potentially improving outcomes in glioblastoma and other malignancies.
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10
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Hanke N, Kunz C, Thiemann M, Fricke H, Lehr T. Translational PBPK Modeling of the Protein Therapeutic and CD95L Inhibitor Asunercept to Develop Dose Recommendations for Its First Use in Pediatric Glioblastoma Patients. Pharmaceutics 2019; 11:pharmaceutics11040152. [PMID: 30939793 PMCID: PMC6523206 DOI: 10.3390/pharmaceutics11040152] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/19/2019] [Accepted: 03/22/2019] [Indexed: 11/18/2022] Open
Abstract
The protein therapeutic and CD95L inhibitor asunercept is currently under clinical investigation for the treatment of glioblastoma and myelodysplastic syndrome. The purpose of this study was to predict the asunercept pharmacokinetics in children and to give dose recommendations for its first use in pediatric glioblastoma patients. A physiologically-based pharmacokinetic (PBPK) model of asunercept in healthy and diseased adults was successfully developed using the available clinical Phase I and Phase II study data. This model was then extrapolated to different pediatric populations, to predict the asunercept exposure in children and to find equivalent starting doses. Simulation of the asunercept serum concentration-time curves in children between 1–18 years of age shows that a dosing regimen based on body weight results in a similar asunercept steady-state exposure in all patients (pediatric or adult) above 12 years of age. For children between 1–12 years, higher doses per kg body weight are recommended, with the highest dose for the very young patients. Translational PBPK modeling is strongly encouraged by regulatory agencies to help with the initial dose selection for pediatric trials. To our knowledge, this is the first report of pediatric PBPK to support the dose selection of a therapeutic protein before its administration to children.
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Affiliation(s)
- Nina Hanke
- Clinical Pharmacy, Saarland University, 66123 Saarbrücken, Germany.
| | | | | | | | - Thorsten Lehr
- Clinical Pharmacy, Saarland University, 66123 Saarbrücken, Germany.
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Rattanapisit K, Srifa S, Kaewpungsup P, Pavasant P, Phoolcharoen W. Plant-produced recombinant Osteopontin-Fc fusion protein enhanced osteogenesis. ACTA ACUST UNITED AC 2019; 21:e00312. [PMID: 30847284 PMCID: PMC6389792 DOI: 10.1016/j.btre.2019.e00312] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 02/04/2019] [Accepted: 02/04/2019] [Indexed: 01/27/2023]
Abstract
Osteopontin (OPN) plays an important role in the bone regeneration process. The plant-produced OPN-Fc increases the protein expression level and facilitates the purification of the recombinant protein. The plant-produced OPN-Fc can stimulate the expression of osteogenic related genes and the calcium deposition in hPDL cells. The plant-produced OPN-Fc has potential application in tissue engineering in the future.
Osteopontin (OPN) plays an important role in the bone regeneration process. Previous investigation showed that recombinant human OPN was able to express in Nicotiana benthamiana leaves and induced the osteogenic related genes. Nevertheless, the purification of OPN from plant proteins with Ni affinity chromatography was still not effective enough. To improve the quality of protein expression and purification in plants, we constructed an Fc-based form of OPN. The complete OPN protein was fused to the human IgG1 Fc domain. Here, we showed that the plant-produced OPN-Fc increases the protein expression level and facilitates the purification of the recombinant protein. Our result showed that the plant-produced OPN-Fc can stimulate the expression of osteogenic related genes such as DMP1, OSX, and Wnt3a and also the calcium deposition in hPDL cells. These findings suggest that the plant-produced OPN-Fc has potential application in tissue engineering in the future.
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Affiliation(s)
- Kaewta Rattanapisit
- Research Unit for Plant-Produced Pharmaceuticals, Chulalongkorn University, Bangkok, Thailand
| | - Suchada Srifa
- Research Unit of Mineralized Tissue, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Pornjira Kaewpungsup
- Research Unit of Mineralized Tissue, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Prasit Pavasant
- Research Unit of Mineralized Tissue, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.,Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Waranyoo Phoolcharoen
- Research Unit for Plant-Produced Pharmaceuticals, Chulalongkorn University, Bangkok, Thailand.,Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
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Dostert C, Grusdat M, Letellier E, Brenner D. The TNF Family of Ligands and Receptors: Communication Modules in the Immune System and Beyond. Physiol Rev 2019; 99:115-160. [DOI: 10.1152/physrev.00045.2017] [Citation(s) in RCA: 175] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The tumor necrosis factor (TNF) and TNF receptor (TNFR) superfamilies (TNFSF/TNFRSF) include 19 ligands and 29 receptors that play important roles in the modulation of cellular functions. The communication pathways mediated by TNFSF/TNFRSF are essential for numerous developmental, homeostatic, and stimulus-responsive processes in vivo. TNFSF/TNFRSF members regulate cellular differentiation, survival, and programmed death, but their most critical functions pertain to the immune system. Both innate and adaptive immune cells are controlled by TNFSF/TNFRSF members in a manner that is crucial for the coordination of various mechanisms driving either co-stimulation or co-inhibition of the immune response. Dysregulation of these same signaling pathways has been implicated in inflammatory and autoimmune diseases, highlighting the importance of their tight regulation. Investigation of the control of TNFSF/TNFRSF activities has led to the development of therapeutics with the potential to reduce chronic inflammation or promote anti-tumor immunity. The study of TNFSF/TNFRSF proteins has exploded over the last 30 yr, but there remains a need to better understand the fundamental mechanisms underlying the molecular pathways they mediate to design more effective anti-inflammatory and anti-cancer therapies.
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Affiliation(s)
- Catherine Dostert
- Department of Infection and Immunity, Experimental and Molecular Immunology, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Odense Research Center for Anaphylaxis, Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark; and Life Sciences Research Unit, Molecular Disease Mechanisms Group, University of Luxembourg, Belvaux, Luxembourg
| | - Melanie Grusdat
- Department of Infection and Immunity, Experimental and Molecular Immunology, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Odense Research Center for Anaphylaxis, Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark; and Life Sciences Research Unit, Molecular Disease Mechanisms Group, University of Luxembourg, Belvaux, Luxembourg
| | - Elisabeth Letellier
- Department of Infection and Immunity, Experimental and Molecular Immunology, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Odense Research Center for Anaphylaxis, Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark; and Life Sciences Research Unit, Molecular Disease Mechanisms Group, University of Luxembourg, Belvaux, Luxembourg
| | - Dirk Brenner
- Department of Infection and Immunity, Experimental and Molecular Immunology, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Odense Research Center for Anaphylaxis, Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark; and Life Sciences Research Unit, Molecular Disease Mechanisms Group, University of Luxembourg, Belvaux, Luxembourg
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Moradi Marjaneh R, Hassanian SM, Ghobadi N, Ferns GA, Karimi A, Jazayeri MH, Nasiri M, Avan A, Khazaei M. Targeting the death receptor signaling pathway as a potential therapeutic target in the treatment of colorectal cancer. J Cell Physiol 2018; 233:6538-6549. [DOI: 10.1002/jcp.26640] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 03/30/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Reyhaneh Moradi Marjaneh
- Department of Physiology, Faculty of Medicine Mashhad University of Medical Sciences Mashhad Iran
| | - Seyed Mahdi Hassanian
- Metabolic Syndrome Research Center Mashhad University of Medical Sciences Mashhad Iran
- Department of Medical Biochemistry, Faculty of Medicine Mashhad University of Medical Sciences Mashhad Iran
- Microanatomy Research Center Mashhad University of Medical Sciences Mashhad Iran
| | - Niloofar Ghobadi
- Metabolic Syndrome Research Center Mashhad University of Medical Sciences Mashhad Iran
| | - Gordon A. Ferns
- Brighton & Sussex Medical School Division of Medical Education Falmer, Brighton, Sussex UK
| | - Afshin Karimi
- Quality Department of Nutricia Mashhad Mild Powder Industrial Mashhad Iran
| | - Mir Hadi Jazayeri
- Immunology Research Center and Department of Immunology, School of Medicine Iran University of Medical Sciences Tehran Iran
| | - Mohammadreza Nasiri
- Recombinant Proteins Research Group The Research Institute of Biotechnology, Ferdowsi University of Mashhad Mashhad Iran
| | - Amir Avan
- Metabolic Syndrome Research Center Mashhad University of Medical Sciences Mashhad Iran
- Cancer Research Center Mashhad University of Medical Sciences Mashhad Iran
- Department of Modern Sciences and Technologies, Faculty of Medicine Mashhad University of Medical Sciences Mashhad Iran
- Surgical Oncology Research Center Mashhad University of Medical Sciences Mashhad Iran
| | - Majid Khazaei
- Department of Physiology, Faculty of Medicine Mashhad University of Medical Sciences Mashhad Iran
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Safety and efficacy of the CD95-ligand inhibitor asunercept in transfusion-dependent patients with low and intermediate risk MDS. Leuk Res 2018; 68:62-69. [DOI: 10.1016/j.leukres.2018.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 03/07/2018] [Accepted: 03/09/2018] [Indexed: 11/21/2022]
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15
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Blaes J, Thomé CM, Pfenning PN, Rübmann P, Sahm F, Wick A, Bunse T, Schmenger T, Sykora J, von Deimling A, Wiestler B, Merz C, Jugold M, Haberkorn U, Abdollahi A, Debus J, Gieffers C, Kunz C, Bendszus M, Kluge M, Platten M, Fricke H, Wick W, Lemke D. Inhibition of CD95/CD95L (FAS/FASLG) Signaling with APG101 Prevents Invasion and Enhances Radiation Therapy for Glioblastoma. Mol Cancer Res 2018; 16:767-776. [DOI: 10.1158/1541-7786.mcr-17-0563] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 11/25/2017] [Accepted: 01/16/2018] [Indexed: 11/16/2022]
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16
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Alsalawy NF, Darwish RK, Kamal MM, ElTaweel AE, Shousha HI, Elbaz TM. Evaluation of trail receptor 1 (DR4) polymorphisms C626G and A683C as risk factors of hepatocellular carcinoma. J Med Virol 2017; 90:490-496. [PMID: 28975649 DOI: 10.1002/jmv.24964] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 09/06/2017] [Indexed: 01/05/2023]
Abstract
Tumor necrosis factor related apoptosis-inducing ligand (TRAIL) plays an important role in many cancers including hepatocellular carcinoma (HCC). The aim of this study is to investigate the association of the DR4 polymorphisms C626G (Thr209Arg, rs20575) and A683C (Glu228Ala, rs20576) with the occurrence of HCC in Egyptian patients chronically infected with HCV. The study included 80 patients with HCV-related HCC (group 1) and 80 patients with HCV-related liver cirrhosis (group 2) who are naïve to treatment. Clinical and laboratory data were recorded. Genotyping of TRAIL receptor DR4 polymorphism C626G rs20575 and A683C rs20576 SNP was done by Real-Time PCR using taqman probes technology. The mean age of HCC patients was 57.6 ± 8.4 years with 62 patients (77.5%) were males. While group 2 mean age was 49.5 ± 10.29 years with 50% were males. The frequency distribution of rs20575 genotypes showed a statistically significant difference between the two studied groups (P = 0.02), the carriers of the C allele were 2.01 times more likely to develop HCC than the carriers of the G allele (P = 0.003), while no significant difference in rs20576 genotypes distribution was found between the studied groups (P = 0.680). On combining the carriers of C allele of rs20575 and the carriers of A allele of rs20576, a significant difference was detected (P > 0.001) with 2.85 higher risk of HCC development in patients who carried both genetic risk alleles simultaneously. The significant difference in DR4 polymorphisms among HCC and cirrhotic patients suggests their role as potential risk factors of HCC development.
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Affiliation(s)
- Naglaa F Alsalawy
- Department of Clinical and Chemical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Rania K Darwish
- Department of Clinical and Chemical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Manal M Kamal
- Department of Clinical and Chemical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Ahmed E ElTaweel
- Department of Clinical and Chemical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Hend I Shousha
- Department of Endemic Hepatogastroenterolog, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Tamer M Elbaz
- Department of Endemic Hepatogastroenterolog, Faculty of Medicine, Cairo University, Cairo, Egypt
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17
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Poissonnier A, Sanséau D, Le Gallo M, Malleter M, Levoin N, Viel R, Morere L, Penna A, Blanco P, Dupuy A, Poizeau F, Fautrel A, Seneschal J, Jouan F, Ritz J, Forcade E, Rioux N, Contin-Bordes C, Ducret T, Vacher AM, Barrow PA, Flynn RJ, Vacher P, Legembre P. CD95-Mediated Calcium Signaling Promotes T Helper 17 Trafficking to Inflamed Organs in Lupus-Prone Mice. Immunity 2017; 45:209-23. [PMID: 27438772 PMCID: PMC4961226 DOI: 10.1016/j.immuni.2016.06.028] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 03/10/2016] [Accepted: 05/10/2016] [Indexed: 11/25/2022]
Abstract
CD95 ligand (CD95L) is expressed by immune cells and triggers apoptotic death. Metalloprotease-cleaved CD95L (cl-CD95L) is released into the bloodstream but does not trigger apoptotic signaling. Hence, the pathophysiological role of cl-CD95L remains unclear. We observed that skin-derived endothelial cells from systemic lupus erythematosus (SLE) patients expressed CD95L and that after cleavage, cl-CD95L promoted T helper 17 (Th17) lymphocyte transmigration across the endothelial barrier at the expense of T regulatory cells. T cell migration relied on a direct interaction between the CD95 domain called calcium-inducing domain (CID) and the Src homology 3 domain of phospholipase Cγ1. Th17 cells stimulated with cl-CD95L produced sphingosine-1-phosphate (S1P), which promoted endothelial transmigration by activating the S1P receptor 3. We generated a cell-penetrating CID peptide that prevented Th17 cell transmigration and alleviated clinical symptoms in lupus mice. Therefore, neutralizing the CD95 non-apoptotic signaling pathway could be an attractive therapeutic approach for SLE treatment. CD95-mediated Ca2+ response promotes endothelial transmigration of Th17 cells CD95 interacts with PLCγ1 to induce Ca2+ response and Th17 cell migration Ca2+ response stems from a CD95 region different from death domain Inhibition of the CD95-mediated Ca2+ response alleviates disease in lupus-prone mice
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Affiliation(s)
- Amanda Poissonnier
- Centre Eugène Marquis, Rue Bataille Flandres Dunkerque, 35042 Rennes, France; INSERM ERL440-OSS, Equipe Labellisée, Ligue Contre Le Cancer, 35042 Rennes, France; Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France
| | - Doriane Sanséau
- Centre Eugène Marquis, Rue Bataille Flandres Dunkerque, 35042 Rennes, France; INSERM ERL440-OSS, Equipe Labellisée, Ligue Contre Le Cancer, 35042 Rennes, France; Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France
| | - Matthieu Le Gallo
- Centre Eugène Marquis, Rue Bataille Flandres Dunkerque, 35042 Rennes, France; INSERM ERL440-OSS, Equipe Labellisée, Ligue Contre Le Cancer, 35042 Rennes, France; Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France
| | - Marine Malleter
- Centre Eugène Marquis, Rue Bataille Flandres Dunkerque, 35042 Rennes, France; INSERM ERL440-OSS, Equipe Labellisée, Ligue Contre Le Cancer, 35042 Rennes, France; Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France; Biosit, Plateforme H2P2, Biogenouest, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France
| | - Nicolas Levoin
- Bioprojet Biotech, Rue du Chesnay Beauregard, 35760 Saint-Grégoire, France
| | - Roselyne Viel
- Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France; Biosit, Plateforme H2P2, Biogenouest, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France
| | - Lucie Morere
- Centre Eugène Marquis, Rue Bataille Flandres Dunkerque, 35042 Rennes, France; INSERM ERL440-OSS, Equipe Labellisée, Ligue Contre Le Cancer, 35042 Rennes, France; Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France
| | - Aubin Penna
- Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France; INSERM U1085, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France
| | - Patrick Blanco
- Université de Bordeaux, CHU Bordeaux, 146 Rue Léo Saignat, 33076 Bordeaux, France; CNRS UMR 5164, 146 Rue Léo Saignat, 33076 Bordeaux, France
| | - Alain Dupuy
- Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France; Centre Hospitalier Universitaire Rennes, 2 Rue Henri Le Guilloux, 35022 Rennes, France
| | - Florence Poizeau
- Centre Eugène Marquis, Rue Bataille Flandres Dunkerque, 35042 Rennes, France; INSERM ERL440-OSS, Equipe Labellisée, Ligue Contre Le Cancer, 35042 Rennes, France; Centre Hospitalier Universitaire Rennes, 2 Rue Henri Le Guilloux, 35022 Rennes, France
| | - Alain Fautrel
- Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France; Biosit, Plateforme H2P2, Biogenouest, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France
| | - Julien Seneschal
- Université de Bordeaux, CHU Bordeaux, 146 Rue Léo Saignat, 33076 Bordeaux, France; INSERM U1035, 146 rue Léo Saignat, 33076 Bordeaux, France
| | - Florence Jouan
- Centre Eugène Marquis, Rue Bataille Flandres Dunkerque, 35042 Rennes, France; INSERM ERL440-OSS, Equipe Labellisée, Ligue Contre Le Cancer, 35042 Rennes, France; Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France
| | - Jerome Ritz
- Division of Hematologic Malignancies and Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, United States
| | - Edouard Forcade
- Université de Bordeaux, CHU Bordeaux, 146 Rue Léo Saignat, 33076 Bordeaux, France; CNRS UMR 5164, 146 Rue Léo Saignat, 33076 Bordeaux, France; Division of Hematologic Malignancies and Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, United States
| | - Nathalie Rioux
- Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France; INSERM U1085, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France; INSERM U1035, 146 rue Léo Saignat, 33076 Bordeaux, France
| | - Cécile Contin-Bordes
- Université de Bordeaux, CHU Bordeaux, 146 Rue Léo Saignat, 33076 Bordeaux, France; CNRS UMR 5164, 146 Rue Léo Saignat, 33076 Bordeaux, France
| | - Thomas Ducret
- Université de Bordeaux, CHU Bordeaux, 146 Rue Léo Saignat, 33076 Bordeaux, France; INSERM U1045, 146 rue Léo Saignat, 33076 Bordeaux, France
| | - Anne-Marie Vacher
- Université de Bordeaux, CHU Bordeaux, 146 Rue Léo Saignat, 33076 Bordeaux, France; INSERM U1218, Institut Bergonié, 33076 Bordeaux, France
| | - Paul A Barrow
- School of Veterinary Medicine and Science, University of Nottingham, Leicestershire LE12 5RD, United Kingdom
| | - Robin J Flynn
- School of Veterinary Medicine and Science, University of Nottingham, Leicestershire LE12 5RD, United Kingdom
| | - Pierre Vacher
- Université de Bordeaux, CHU Bordeaux, 146 Rue Léo Saignat, 33076 Bordeaux, France; INSERM U1218, Institut Bergonié, 33076 Bordeaux, France
| | - Patrick Legembre
- Centre Eugène Marquis, Rue Bataille Flandres Dunkerque, 35042 Rennes, France; INSERM ERL440-OSS, Equipe Labellisée, Ligue Contre Le Cancer, 35042 Rennes, France; Université de Rennes 1, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France; Biosit, Plateforme H2P2, Biogenouest, 2 Ave. du Prof. Léon Bernard, 35043 Rennes, France.
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18
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Cell death: From initial concepts to pathways to clinical applications – Personal reflections of a clinical researcher. Biochem Biophys Res Commun 2017; 482:445-449. [DOI: 10.1016/j.bbrc.2016.10.124] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 10/24/2016] [Accepted: 10/27/2016] [Indexed: 01/30/2023]
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The apoptotic members CD95, BclxL, and Bcl-2 cooperate to promote cell migration by inducing Ca(2+) flux from the endoplasmic reticulum to mitochondria. Cell Death Differ 2016; 23:1702-16. [PMID: 27367565 PMCID: PMC5041197 DOI: 10.1038/cdd.2016.61] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 05/26/2016] [Accepted: 06/03/2016] [Indexed: 12/16/2022] Open
Abstract
Metalloprotease-processed CD95L (cl-CD95L) is a soluble cytokine that implements a PI3K/Ca2+ signaling pathway in triple-negative breast cancer (TNBC) cells. Accordingly, high levels of cl-CD95L in TNBC women correlate with poor prognosis, and administration of this ligand in an orthotopic xenograft mouse model accelerates the metastatic dissemination of TNBC cells. The molecular mechanism underlying CD95-mediated cell migration remains unknown. Here, we present genetic and pharmacologic evidence that the anti-apoptotic molecules BclxL and Bcl-2 and the pro-apoptotic factors BAD and BID cooperate to promote migration of TNBC cells stimulated with cl-CD95L. BclxL was distributed in both endoplasmic reticulum (ER) and mitochondrion membranes. The mitochondrion-localized isoform promoted cell migration by interacting with voltage-dependent anion channel 1 to orchestrate Ca2+ transfer from the ER to mitochondria in a BH3-dependent manner. Mitochondrial Ca2+ uniporter contributed to this flux, which favored ATP production and cell migration. In conclusion, this study reveals a novel molecular mechanism controlled by BclxL to promote cancer cell migration and supports the use of BH3 mimetics as therapeutic options not only to kill tumor cells but also to prevent metastatic dissemination in TNBCs.
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20
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CD95 maintains stem cell-like and non-classical EMT programs in primary human glioblastoma cells. Cell Death Dis 2016; 7:e2209. [PMID: 27124583 PMCID: PMC4855647 DOI: 10.1038/cddis.2016.102] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 03/17/2016] [Accepted: 03/21/2016] [Indexed: 01/01/2023]
Abstract
Glioblastoma (GBM) is one of the most aggressive types of cancer with limited therapeutic options and unfavorable prognosis. Stemness and non-classical epithelial-to-mesenchymal transition (ncEMT) features underlie the switch from normal to neoplastic states as well as resistance of tumor clones to current therapies. Therefore, identification of ligand/receptor systems maintaining this privileged state is needed to devise efficient cancer therapies. In this study, we show that the expression of CD95 associates with stemness and EMT features in GBM tumors and cells and serves as a prognostic biomarker. CD95 expression increases in tumors and with tumor relapse as compared with non-tumor tissue. Recruitment of the activating PI3K subunit, p85, to CD95 death domain is required for maintenance of EMT-related transcripts. A combination of the current GBM therapy, temozolomide, with a CD95 inhibitor dramatically abrogates tumor sphere formation. This study molecularly dissects the role of CD95 in GBM cells and contributes the rational for CD95 inhibition as a GBM therapy.
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Abstract
INTRODUCTION Many of the biotherapeutics approved or under development suffer from a short half-life necessitating frequent applications in order to maintain a therapeutic concentration over an extended period of time. The implementation of half-life extension strategies allows the generation of long-lasting therapeutics with improved pharmacokinetic and pharmacodynamic properties. AREAS COVERED This review gives an overview of the different half-life extension strategies developed over the past years and their application to generate next-generation biotherapeutics. It focuses on srategies already used in approved drugs and drugs that are in clinical development. These strategies include those aimed at increasing the hydrodynamic radius of the biotherapeutic and strategies which further implement recycling by the neonatal Fc receptor (FcRn). EXPERT OPINION Half-life extension strategies have become an integral part of development for many biotherapeutics. A diverse set of these strategies is available for the fine-tuning of half-life and adaption to the intended treatment modality and disease. Currently, half-life extension is dominated by strategies utilizing albumin binding or fusion, fusion to an immunoglobulin Fc region and PEGylation. However, a variety of alternative strategies, such as fusion of flexible polypeptide chains as PEG mimetic substitute, have reached advanced stages and offer further alternatives for half-life extension.
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Affiliation(s)
- Roland E Kontermann
- a Institute of Cell Biology and Immunology , University of Stuttgart , Stuttgart , Germany
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22
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Teodorczyk M, Kleber S, Wollny D, Sefrin JP, Aykut B, Mateos A, Herhaus P, Sancho-Martinez I, Hill O, Gieffers C, Sykora J, Weichert W, Eisen C, Trumpp A, Sprick MR, Bergmann F, Welsch T, Martin-Villalba A. CD95 promotes metastatic spread via Sck in pancreatic ductal adenocarcinoma. Cell Death Differ 2015; 22:1192-202. [PMID: 25613377 PMCID: PMC4572867 DOI: 10.1038/cdd.2014.217] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 10/21/2014] [Accepted: 11/20/2014] [Indexed: 01/19/2023] Open
Abstract
Cancer stem cells (CSCs) have been implicated in the initiation and maintenance of tumour growth as well as metastasis. Recent reports link stemness to epithelial–mesenchymal transition (EMT) in cancer. However, there is still little knowledge about the molecular markers of those events. In silico analysis of RNA profiles of 36 pancreatic ductal adenocarcinomas (PDAC) reveals an association of the expression of CD95 with EMT and stemness that was validated in CSCs isolated from PDAC surgical specimens. CD95 expression was also higher in metastatic pancreatic cells than in primary PDAC. Pharmacological inhibition of CD95 activity reduced PDAC growth and metastasis in CSC-derived xenografts and in a murine syngeneic model. On the mechanistic level, Sck was identified as a novel molecule indispensable for CD95's induction of cell cycle progression. This study uncovers CD95 as a marker of EMT and stemness in PDAC. It also addresses the molecular mechanism by which CD95 drives tumour growth and opens tantalizing therapeutic possibilities in PDAC.
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Affiliation(s)
- M Teodorczyk
- Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - S Kleber
- Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - D Wollny
- Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - J P Sefrin
- Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - B Aykut
- Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - A Mateos
- Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - P Herhaus
- Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - I Sancho-Martinez
- Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - O Hill
- Apogenix GmbH, Heidelberg, Germany
| | | | - J Sykora
- Apogenix GmbH, Heidelberg, Germany
| | - W Weichert
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany
| | - C Eisen
- 1] Division of Stem Cells and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany [2] Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH, Heidelberg, Germany
| | - A Trumpp
- 1] Division of Stem Cells and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany [2] Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH, Heidelberg, Germany [3] German Cancer Consortium (DKTK), Heidelberg, Germany
| | - M R Sprick
- 1] Division of Stem Cells and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany [2] Heidelberg Institute for Stem Cell Technology and Experimental Medicine gGmbH, Heidelberg, Germany
| | - F Bergmann
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany
| | - T Welsch
- Department of General, Visceral and Transplantation Surgery, Heidelberg, Germany
| | - A Martin-Villalba
- Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
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Grozdanov V, Bliederhaeuser C, Ruf WP, Roth V, Fundel-Clemens K, Zondler L, Brenner D, Martin-Villalba A, Hengerer B, Kassubek J, Ludolph AC, Weishaupt JH, Danzer KM. Inflammatory dysregulation of blood monocytes in Parkinson's disease patients. Acta Neuropathol 2014; 128:651-63. [PMID: 25284487 PMCID: PMC4201759 DOI: 10.1007/s00401-014-1345-4] [Citation(s) in RCA: 186] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 09/22/2014] [Accepted: 09/22/2014] [Indexed: 12/15/2022]
Abstract
Despite extensive effort on studying inflammatory processes in the CNS of Parkinson's disease (PD) patients, implications of peripheral monocytes are still poorly understood. Here, we set out to obtain a comprehensive picture of circulating myeloid cells in PD patients. We applied a human primary monocyte culture system and flow cytometry-based techniques to determine the state of monocytes from PD patients during disease. We found that the classical monocytes are enriched in the blood of PD patients along with an increase in the monocyte-recruiting chemoattractant protein CCL2. Moreover, we found that monocytes from PD patients display a pathological hyperactivity in response to LPS stimulation that correlates with disease severity. Inflammatory pre-conditioning was also reflected on the transcriptome in PD monocytes using next-generation sequencing. Further, we identified the CD95/CD95L as a key regulator for the PD-associated alteration of circulating monocytes. Pharmacological neutralization of CD95L reverses the dysregulation of monocytic subpopulations in favor of non-classical monocytes. Our results suggest that PD monocytes are in an inflammatory predisposition responding with hyperactivation to a "second hit". These results provide the first direct evidence that circulating human peripheral blood monocytes are altered in terms of their function and composition in PD patients. This study provides insights into monocyte biology in PD and establishes a basis for future studies on peripheral inflammation.
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Wick W, Fricke H, Junge K, Kobyakov G, Martens T, Heese O, Wiestler B, Schliesser MG, von Deimling A, Pichler J, Vetlova E, Harting I, Debus J, Hartmann C, Kunz C, Platten M, Bendszus M, Combs SE. A Phase II, Randomized, Study of Weekly APG101+Reirradiation versus Reirradiation in Progressive Glioblastoma. Clin Cancer Res 2014; 20:6304-13. [DOI: 10.1158/1078-0432.ccr-14-0951-t] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Lemke J, von Karstedt S, Zinngrebe J, Walczak H. Getting TRAIL back on track for cancer therapy. Cell Death Differ 2014; 21:1350-64. [PMID: 24948009 PMCID: PMC4131183 DOI: 10.1038/cdd.2014.81] [Citation(s) in RCA: 359] [Impact Index Per Article: 35.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/14/2014] [Accepted: 04/15/2014] [Indexed: 02/07/2023] Open
Abstract
Unlike other members of the TNF superfamily, the TNF-related apoptosis-inducing ligand (TRAIL, also known as Apo2L) possesses the unique capacity to induce apoptosis selectively in cancer cells in vitro and in vivo. This exciting discovery provided the basis for the development of TRAIL-receptor agonists (TRAs), which have demonstrated robust anticancer activity in a number of preclinical studies. Subsequently initiated clinical trials testing TRAs demonstrated, on the one hand, broad tolerability but revealed, on the other, that therapeutic benefit was rather limited. Several factors that are likely to account for TRAs' sobering clinical performance have since been identified. First, because of initial concerns over potential hepatotoxicity, TRAs with relatively weak agonistic activity were selected to enter clinical trials. Second, although TRAIL can induce apoptosis in several cancer cell lines, it has now emerged that many others, and importantly, most primary cancer cells are resistant to TRAIL monotherapy. Third, so far patients enrolled in TRA-employing clinical trials were not selected for likelihood of benefitting from a TRA-comprising therapy on the basis of a valid(ated) biomarker. This review summarizes and discusses the results achieved so far in TRA-employing clinical trials in the light of these three shortcomings. By integrating recent insight on apoptotic and non-apoptotic TRAIL signaling in cancer cells, we propose approaches to introduce novel, revised TRAIL-based therapeutic concepts into the cancer clinic. These include (i) the use of recently developed highly active TRAs, (ii) the addition of efficient, but cancer-cell-selective TRAIL-sensitizing agents to overcome TRAIL resistance and (iii) employing proteomic profiling to uncover resistance mechanisms. We envisage that this shall enable the design of effective TRA-comprising therapeutic concepts for individual cancer patients in the future.
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Affiliation(s)
- J Lemke
- 1] Centre for Cell Death, Cancer and Inflammation (CCCI), UCL Cancer Institute, University College London, 72 Huntley Street, London WC1E 6DD, UK [2] Clinic of General and Visceral Surgery, University of Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - S von Karstedt
- Centre for Cell Death, Cancer and Inflammation (CCCI), UCL Cancer Institute, University College London, 72 Huntley Street, London WC1E 6DD, UK
| | - J Zinngrebe
- Centre for Cell Death, Cancer and Inflammation (CCCI), UCL Cancer Institute, University College London, 72 Huntley Street, London WC1E 6DD, UK
| | - H Walczak
- Centre for Cell Death, Cancer and Inflammation (CCCI), UCL Cancer Institute, University College London, 72 Huntley Street, London WC1E 6DD, UK
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Bambury RM, Morris PG. The search for novel therapeutic strategies in the treatment of recurrent glioblastoma multiforme. Expert Rev Anticancer Ther 2014; 14:955-64. [PMID: 24814143 DOI: 10.1586/14737140.2014.916214] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Glioblastoma multiforme (GBM) is the most common and aggressive primary brain tumor with ≤10% patients surviving 5 years from the time of diagnosis. After tumor progression on frontline therapy with concomitant chemoradiotherapy followed by consolidation temozolomide there are few effective treatment options. Bevacizumab and nitrosureas are the most commonly used systemic options in this instance but no overall survival benefit has been demonstrated. In this review we outline the major avenues of research for treatment of recurrent GBM including anti-angiogenic, signaling pathway blockade and immunotherapy approaches. Results of recent trials as well as pertinent ongoing studies are discussed. Enrollment of patients to clinical trials as well as incorporation of correlative translational science studies to identify predictive biomarkers of treatment response will be key to improving outcomes in this devastating disease.
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Affiliation(s)
- Richard M Bambury
- Memorial Sloan-Kettering Cancer Center, 1275 York Avenue New York, NY 10065, USA
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Malleter M, Tauzin S, Bessede A, Castellano R, Goubard A, Godey F, Levêque J, Jézéquel P, Campion L, Campone M, Ducret T, MacGrogan G, Debure L, Collette Y, Vacher P, Legembre P. CD95L cell surface cleavage triggers a prometastatic signaling pathway in triple-negative breast cancer. Cancer Res 2013; 73:6711-21. [PMID: 24072745 DOI: 10.1158/0008-5472.can-13-1794] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Triple-negative breast cancers (TNBC) lacking estrogen and progesterone receptors and HER2 amplification have a relatively high risk of metastatic dissemination, but the mechanistic basis for this risk is not understood. Here, we report that serum levels of CD95 ligand (CD95L) are higher in patients with TNBC than in other patients with breast cancer. Metalloprotease-mediated cleavage of CD95L expressed by endothelial cells surrounding tumors generates a gradient that promotes cell motility due to the formation of an unconventional CD95-containing receptosome called the motility-inducing signaling complex. The formation of this complex was instrumental for Nox3-driven reactive oxygen species generation. Mechanistic investigations revealed a Yes-Orai1-EGFR-PI3K pathway that triggered migration of TNBC cells exposed to CD95L. Our findings establish a prometastatic function for metalloprotease-cleaved CD95L in TNBCs, revisiting its role in carcinogenesis.
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Affiliation(s)
- Marine Malleter
- Authors' Affiliations: Inserm U1085-IRSET, Equipe Labellisée Ligue Contre Le Cancer; Université de Rennes-1; Centre Eugène Marquis, rue bataille Flandres Dunkerque, Rennes; ImmuSmol, 15 Rue Amiral Prouhet, Pessac; Inserm, U1068; Institut Paoli-Calmettes; Aix-Marseille Université, CNRS, UMR 7258, Marseille; ICO-René Gauducheau, Bd J. Monod, Saint-Herblain; Université de Bordeaux; Inserm U1045, Université Bordeaux Segalen; and Inserm U916, Institut Bergonié, Bordeaux, France
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Martin-Villalba A, Llorens-Bobadilla E, Wollny D. CD95 in cancer: tool or target? Trends Mol Med 2013; 19:329-35. [PMID: 23540716 DOI: 10.1016/j.molmed.2013.03.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 02/22/2013] [Accepted: 03/04/2013] [Indexed: 12/13/2022]
Abstract
The role of CD95 (Fas/Apo1) in cancer has been a matter of debate for over 30 years. First discovered as an apoptosis-inducing molecule, CD95 soon emerged as a potential anticancer therapy. Yet accumulating evidence indicates a profound role for CD95 in alternative nonapoptotic signaling pathways that increase tumorigenesis. This fact challenges the initial clinical idea of using CD95 as a 'tumor killer' while setting the stage for clinical studies targeting the nonapoptotic signaling branch of CD95. This review summarizes the findings surrounding manipulation of the CD95 pathway for cancer therapy, considering how one receptor can both promote and prevent cell growth.
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Affiliation(s)
- Ana Martin-Villalba
- Molecular Neurobiology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany.
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Recombinant CD95-Fc (APG101) prevents graft-versus-host disease in mice without disabling antitumor cytotoxicity and T-cell functions. Blood 2012. [PMID: 23203823 DOI: 10.1182/blood-2012-04-423392] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Graft-versus-host disease (GVHD) induced by transplant-derived T cells represents a major complication after allogeneic bone marrow transplantation (BMT). However, these T cells support engraftment, early T-cell immunity, and mediate the graft-versus-tumor (GVT) effect. Cytotoxic effector functions by transplanted T cells are predominantly mediated by the perforin/granzyme and the CD95/CD95L system. APG101, a novel recombinant human fusion protein consisting of the extracellular domain of CD95 and the Fc domain of an IgG1 antibody inhibited CD95L-induced apoptosis without interfering with T-cell function in vitro and was therefore tested for its ability to prevent GVHD in murine BMT models across minor or major histocompatibility barriers. Starting APG101 treatment either 1 day before or 6 days after transplantation effectively reduced clinical GVHD and rescued survival between 60% and 100% if GVHD was CD95L mediated. APG101 did not interfere with the GVT effect, because P815 mastocytoma and most importantly primary Bcr-Abl-transformed B-cell leukemias were completely eradicated by the alloantigen-specific T cells. Phenotype and homing of alloantigen-specific T cells or their perforin/granzyme-mediated cytotoxicity and proliferative capacity were not affected by APG101 treatment suggesting that APG101 therapy might be useful in GVHD prophylaxis without impairing T-cell function and most importantly preserving GVT activity.
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