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Rahman R, Shi DD, Reitman ZJ, Hamerlik P, de Groot JF, Haas-Kogan DA, D'Andrea AD, Sulman EP, Tanner K, Agar NYR, Sarkaria JN, Tinkle CL, Bindra RS, Mehta MP, Wen PY. DNA damage response in brain tumors: A Society for Neuro-Oncology consensus review on mechanisms and translational efforts in neuro-oncology. Neuro Oncol 2024:noae072. [PMID: 38770568 DOI: 10.1093/neuonc/noae072] [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] [Indexed: 05/22/2024] Open
Abstract
DNA damage response (DDR) mechanisms are critical to maintenance of overall genomic stability, and their dysfunction can contribute to oncogenesis. Significant advances in our understanding of DDR pathways have raised the possibility of developing therapies that exploit these processes. In this expert-driven consensus review, we examine mechanisms of response to DNA damage, progress in development of DDR inhibitors in IDH-wild-type glioblastoma and IDH-mutant gliomas, and other important considerations such as biomarker development, preclinical models, combination therapies, mechanisms of resistance and clinical trial design considerations.
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Affiliation(s)
- Rifaquat Rahman
- Department of Radiation Oncology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Diana D Shi
- Department of Radiation Oncology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Zachary J Reitman
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina, USA
| | - Petra Hamerlik
- Division of Cancer Sciences, University of Manchester, Manchester, UK
| | - John F de Groot
- Division of Neuro-Oncology, University of California San Francisco, San Francisco, California, USA
| | - Daphne A Haas-Kogan
- Department of Radiation Oncology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Alan D D'Andrea
- Department of Radiation Oncology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Erik P Sulman
- Department of Radiation Oncology, New York University, New York, New York, USA
| | - Kirk Tanner
- National Brain Tumor Society, Newton, Massachusetts, USA
| | - Nathalie Y R Agar
- Department of Neurosurgery and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jann N Sarkaria
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | - Christopher L Tinkle
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Ranjit S Bindra
- Department of Therapeutic Radiology, Yale University, New Haven, Connecticut, USA
| | - Minesh P Mehta
- Miami Cancer Institute, Baptist Hospital, Miami, Florida, USA
| | - Patrick Y Wen
- Center for Neuro-Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA
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2
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Köberle B, Usanova S, Piee-Staffa A, Heinicke U, Clauss P, Brozovic A, Kaina B. Strong apoptotic response of testis tumor cells following cisplatin treatment. Int Urol Nephrol 2024; 56:1007-1017. [PMID: 37891379 PMCID: PMC10853295 DOI: 10.1007/s11255-023-03825-5] [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: 08/03/2023] [Accepted: 09/25/2023] [Indexed: 10/29/2023]
Abstract
Most solid metastatic cancers are resistant to chemotherapy. However, metastatic testicular germ cell tumors (TGCT) are cured in over 80% of patients using cisplatin-based combination therapy. Published data suggest that TGCTs are sensitive to cisplatin due to limited DNA repair and presumably also to a propensity to undergo apoptosis. To further investigate this aspect, cisplatin-induced activation of apoptotic pathways was investigated in cisplatin-sensitive testis tumor cells (TTC) and compared to cisplatin-resistant bladder cancer cells. Apoptosis induction was investigated using flow cytometry, caspase activation and PARP-1 cleavage. Immunoblotting and RT-PCR were applied to investigate pro- and anti-apoptotic proteins. Transfections were performed to target p53- and Fas/FasL-mediated apoptotic signaling. Immunoblotting experiments revealed p53 to be induced in TTC, but not bladder cancer cells following cisplatin. Higher levels of pro-apoptotic Bax and Noxa were observed in TTC, anti-apoptotic Bcl-2 was solely expressed in bladder cancer cells. Cisplatin led to translocation of Bax to the mitochondrial membrane in TTC, resulting in cytochrome C release. Cisplatin increased the expression of FasR mRNA and FasL protein in all tumor cell lines. Targeting the apoptotic pathway via siRNA-mediated knockdown of p53 and FAS reduced death receptor-mediated apoptosis and increased cisplatin resistance in TTC, indicating the involvement of FAS-mediated apoptosis in the cisplatin TTC response. In conclusion, both the death receptor and the mitochondrial apoptotic pathway become strongly activated in TTC following cisplatin treatment, explaining, together with attenuated DNA repair, their unique sensitivity toward platinum-based anticancer drugs.
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Affiliation(s)
- Beate Köberle
- Institute of Toxicology, University of Mainz Medical Center, 55131, Mainz, Germany.
- Department of Food Chemistry and Toxicology, Karlsruhe Institute of Technology, 76131, Karlsruhe, Germany.
| | - Svetlana Usanova
- Institute of Toxicology, University of Mainz Medical Center, 55131, Mainz, Germany
| | - Andrea Piee-Staffa
- Institute of Toxicology, University of Mainz Medical Center, 55131, Mainz, Germany
| | - Ulrike Heinicke
- Institute of Toxicology, University of Mainz Medical Center, 55131, Mainz, Germany
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt, 60596, Frankfurt Am Main, Germany
| | - Philipp Clauss
- Institute of Toxicology, University of Mainz Medical Center, 55131, Mainz, Germany
| | - Anamaria Brozovic
- Division of Molecular Biology, Ruđer Bošković Institute, 10000, Zagreb, Croatia
| | - Bernd Kaina
- Institute of Toxicology, University of Mainz Medical Center, 55131, Mainz, Germany.
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3
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Ahmad O, Ahmad T, Pfister SM. IDH mutation, glioma immunogenicity, and therapeutic challenge of primary mismatch repair deficient IDH-mutant astrocytoma PMMRDIA: a systematic review. Mol Oncol 2024. [PMID: 38339779 DOI: 10.1002/1878-0261.13598] [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: 09/27/2023] [Revised: 12/28/2023] [Accepted: 01/22/2024] [Indexed: 02/12/2024] Open
Abstract
In 2021, Suwala et al. described Primary Mismatch Repair Deficient IDH-mutant Astrocytoma (PMMRDIA) as a distinct group of gliomas. In unsupervised clustering, PMMRDIA forms distinct cluster, separate from other IDH-mutant gliomas, including IDH-mutant gliomas with secondary mismatch repair (MMR) deficiency. In the published cohort, three patients received treatment with an immune checkpoint blocker (ICB), yet none exhibited a response, which aligns with existing knowledge about the decreased immunogenicity of IDH-mutant gliomas in comparison to IDH-wildtype. In the case of PMMRDIA, the inherent resistance to the standard-of-care temozolomide caused by MMR deficiency is an additional challenge. It is known that a gain-of-function mutation of IDH1/2 genes produces the oncometabolite R-2-hydroxyglutarate (R-2-HG), which increases DNA and histone methylation contributing to the characteristic glioma-associated CpG island methylator phenotype (G-CIMP). While other factors could be involved in remodeling the tumor microenvironment (TME) of IDH-mutant gliomas, this systematic review emphasizes the role of R-2-HG and the subsequent G-CIMP in immune suppression. This highlights a potential actionable pathway to enhance the response of ICB, which might be relevant for addressing the unmet therapeutic challenge of PMMRDIA.
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Affiliation(s)
- Olfat Ahmad
- Division of Pediatric Neurooncology, Hopp Children's Cancer Center (KiTZ), Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), Heidelberg, Germany
- Institute of Human Genetics, University Hospital Heidelberg, Heidelberg, Germany
- University of Oxford, Oxford, UK
- King Hussein Cancer Center (KHCC), Amman, Jordan
| | - Tahani Ahmad
- Department of Pediatric Neuroradiology, IWK Health Center, Halifax, Canada
- Dalhousie University, Halifax, Canada
| | - Stefan M Pfister
- Division of Pediatric Neurooncology, Hopp Children's Cancer Center (KiTZ), Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), Heidelberg, Germany
- Department of Pediatric Hematology and Oncology, Heidelberg University Hospital, Heidelberg, Germany
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4
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Mierke CT. Extracellular Matrix Cues Regulate Mechanosensing and Mechanotransduction of Cancer Cells. Cells 2024; 13:96. [PMID: 38201302 PMCID: PMC10777970 DOI: 10.3390/cells13010096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/29/2023] [Accepted: 01/01/2024] [Indexed: 01/12/2024] Open
Abstract
Extracellular biophysical properties have particular implications for a wide spectrum of cellular behaviors and functions, including growth, motility, differentiation, apoptosis, gene expression, cell-matrix and cell-cell adhesion, and signal transduction including mechanotransduction. Cells not only react to unambiguously mechanical cues from the extracellular matrix (ECM), but can occasionally manipulate the mechanical features of the matrix in parallel with biological characteristics, thus interfering with downstream matrix-based cues in both physiological and pathological processes. Bidirectional interactions between cells and (bio)materials in vitro can alter cell phenotype and mechanotransduction, as well as ECM structure, intentionally or unintentionally. Interactions between cell and matrix mechanics in vivo are of particular importance in a variety of diseases, including primarily cancer. Stiffness values between normal and cancerous tissue can range between 500 Pa (soft) and 48 kPa (stiff), respectively. Even the shear flow can increase from 0.1-1 dyn/cm2 (normal tissue) to 1-10 dyn/cm2 (cancerous tissue). There are currently many new areas of activity in tumor research on various biological length scales, which are highlighted in this review. Moreover, the complexity of interactions between ECM and cancer cells is reduced to common features of different tumors and the characteristics are highlighted to identify the main pathways of interaction. This all contributes to the standardization of mechanotransduction models and approaches, which, ultimately, increases the understanding of the complex interaction. Finally, both the in vitro and in vivo effects of this mechanics-biology pairing have key insights and implications for clinical practice in tumor treatment and, consequently, clinical translation.
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Affiliation(s)
- Claudia Tanja Mierke
- Biological Physics Division, Peter Debye Institute of Soft Matter Physics, Faculty of Physics and Earth Science, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany
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5
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Lecoultre M, Chliate S, Espinoza FI, Tankov S, Dutoit V, Walker PR. Radio-chemotherapy of glioblastoma cells promotes phagocytosis by macrophages in vitro. Radiother Oncol 2024; 190:110049. [PMID: 38072365 DOI: 10.1016/j.radonc.2023.110049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 11/03/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023]
Abstract
BACKGROUND AND PURPOSE Immunotherapy is actively explored in glioblastoma (GBM) to improve patient prognosis. Tumor-associated macrophages (TAMs) are abundant in GBM and harnessing their function for anti-tumor immunity is of interest. They are plastic cells that are influenced by the tumor microenvironment, by radio-chemotherapy and by their own phagocytic activity. Indeed, the engulfment of necrotic cells promotes pro-inflammatory (and anti-tumoral) functions while the engulfment of apoptotic cells promotes anti-inflammatory (and pro-tumoral) functions through efferocytosis. MATERIALS AND METHODS To model the effect of radio-chemotherapy on the GBM microenvironment, we exposed human macrophages to supernatant of treated GBM cells in vitro. Macrophages were derived from human monocytes and GBM cells from patient-resected tumors. GBM cells were exposed to therapeutically relevant doses of irradiation and chemotherapy. Apoptosis and phagocytic activity were assessed by flow cytometry. RESULTS The phagocytic activity of macrophages was increased, and it was correlated with the proportion of apoptotic GBM cells producing the supernatant. Whether uptake of apoptotic tumor cells could occur would depend upon the expression of efferocytosis-associated receptors. Indeed, we showed that efferocytosis-associated receptors, such as AXL, were upregulated. CONCLUSIONS AND PERSPECTIVES We showed that macrophage phagocytic activity increased when exposed to supernatant from GBM cells treated by radio-chemotherapy. However, as efferocytosis-associated receptors were up-regulated, this effect could be deleterious for the anti-GBM immune response. We speculate that by inducing GBM cell apoptosis in parallel to an increase in efferocytosis receptor expression, the impact of radio-chemotherapy on phagocytic activity could promote anti-inflammatory and pro-tumoral TAM functions.
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Affiliation(s)
- Marc Lecoultre
- Faculty of Medicine, University of Geneva, Geneva, Switzerland; Immunobiology of Brain Tumours Laboratory, Center for Translational Research in Onco-Hematology, University of Geneva, Geneva Switzerland; Division of General Internal Medicine, Geneva University Hospital, Geneva, Switzerland
| | - Sylvie Chliate
- Faculty of Medicine, University of Geneva, Geneva, Switzerland; Immunobiology of Brain Tumours Laboratory, Center for Translational Research in Onco-Hematology, University of Geneva, Geneva Switzerland
| | - Felipe I Espinoza
- Faculty of Medicine, University of Geneva, Geneva, Switzerland; Immunobiology of Brain Tumours Laboratory, Center for Translational Research in Onco-Hematology, University of Geneva, Geneva Switzerland
| | - Stoyan Tankov
- Faculty of Medicine, University of Geneva, Geneva, Switzerland; Immunobiology of Brain Tumours Laboratory, Center for Translational Research in Onco-Hematology, University of Geneva, Geneva Switzerland
| | - Valérie Dutoit
- Faculty of Medicine, University of Geneva, Geneva, Switzerland; Immunobiology of Brain Tumours Laboratory, Center for Translational Research in Onco-Hematology, University of Geneva, Geneva Switzerland; Faculty of Medicine, Laboratory of Tumor Immunology and Center of Oncology, Geneva University Hospital, Geneva, Switzerland
| | - Paul R Walker
- Faculty of Medicine, University of Geneva, Geneva, Switzerland; Immunobiology of Brain Tumours Laboratory, Center for Translational Research in Onco-Hematology, University of Geneva, Geneva Switzerland.
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Salvatori L, Malatesta S, Illi B, Somma MP, Fionda C, Stabile H, Fontanella RA, Gaetano C. Nitric Oxide Prevents Glioblastoma Stem Cells' Expansion and Induces Temozolomide Sensitization. Int J Mol Sci 2023; 24:11286. [PMID: 37511047 PMCID: PMC10379318 DOI: 10.3390/ijms241411286] [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: 06/09/2023] [Revised: 06/30/2023] [Accepted: 07/04/2023] [Indexed: 07/30/2023] Open
Abstract
Glioblastoma multiforme (GBM) has high mortality and recurrence rates. Malignancy resilience is ascribed to Glioblastoma Stem Cells (GSCs), which are resistant to Temozolomide (TMZ), the gold standard for GBM post-surgical treatment. However, Nitric Oxide (NO) has demonstrated anti-cancer efficacy in GBM cells, but its potential impact on GSCs remains unexplored. Accordingly, we investigated the effects of NO, both alone and in combination with TMZ, on patient-derived GSCs. Experimentally selected concentrations of diethylenetriamine/NO adduct and TMZ were used through a time course up to 21 days of treatment, to evaluate GSC proliferation and death, functional recovery, and apoptosis. Immunofluorescence and Western blot analyses revealed treatment-induced effects in cell cycle and DNA damage occurrence and repair. Our results showed that NO impairs self-renewal, disrupts cell-cycle progression, and expands the quiescent cells' population. Consistently, NO triggered a significant but tolerated level of DNA damage, but not apoptosis. Interestingly, NO/TMZ cotreatment further inhibited cell cycle progression, augmented G0 cells, induced cell death, but also enhanced DNA damage repair activity. These findings suggest that, although NO administration does not eliminate GSCs, it stunts their proliferation, and makes cells susceptible to TMZ. The resulting cytostatic effect may potentially allow long-term control over the GSCs' subpopulation.
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Affiliation(s)
- Luisa Salvatori
- Institute of Molecular Biology and Pathology, National Research Council (CNR), c/o Sapienza University of Rome, 00185 Rome, Italy
| | - Silvia Malatesta
- Institute of Molecular Biology and Pathology, National Research Council (CNR), c/o Sapienza University of Rome, 00185 Rome, Italy
- Department of Biology and Biotechnology "Charles Darwin", Sapienza University of Rome, 00185 Rome, Italy
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, 00161 Rome, Italy
| | - Barbara Illi
- Institute of Molecular Biology and Pathology, National Research Council (CNR), c/o Sapienza University of Rome, 00185 Rome, Italy
| | - Maria Patrizia Somma
- Institute of Molecular Biology and Pathology, National Research Council (CNR), c/o Sapienza University of Rome, 00185 Rome, Italy
| | - Cinzia Fionda
- Department of Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy
| | - Helena Stabile
- Department of Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy
| | - Rosaria Anna Fontanella
- Institute of Molecular Biology and Pathology, National Research Council (CNR), c/o Sapienza University of Rome, 00185 Rome, Italy
- Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy
| | - Carlo Gaetano
- Laboratorio di Epigenetica, Istituti Clinici Scientifici Maugeri IRCCS, 27100 Pavia, Italy
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7
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Drzewiecka M, Gajos-Michniewicz A, Hoser G, Jaśniak D, Barszczewska-Pietraszek G, Sitarek P, Czarny P, Piekarski J, Radek M, Czyż M, Skorski T, Śliwiński T. Histone Deacetylases (HDAC) Inhibitor-Valproic Acid Sensitizes Human Melanoma Cells to Dacarbazine and PARP Inhibitor. Genes (Basel) 2023; 14:1295. [PMID: 37372475 DOI: 10.3390/genes14061295] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/09/2023] [Accepted: 06/18/2023] [Indexed: 06/29/2023] Open
Abstract
The inhibition of histone deacetylases (HDACs) holds promise as a potential anti-cancer therapy as histone and non-histone protein acetylation is frequently disrupted in cancer, leading to cancer initiation and progression. Additionally, the use of a histone deacetylase inhibitor (HDACi) such as the class I HDAC inhibitor-valproic acid (VPA) has been shown to enhance the effectiveness of DNA-damaging factors, such as cisplatin or radiation. In this study, we found that the use of VPA in combination with talazoparib (BMN-673-PARP1 inhibitor-PARPi) and/or Dacarbazine (DTIC-alkylating agent) resulted in an increased rate of DNA double strand breaks (DSBs) and reduced survival (while not affecting primary melanocytes) and the proliferation of melanoma cells. Furthermore, the pharmacological inhibition of class I HDACs sensitizes melanoma cells to apoptosis following exposure to DTIC and BMN-673. In addition, the inhibition of HDACs causes the sensitization of melanoma cells to DTIV and BMN-673 in melanoma xenografts in vivo. At the mRNA and protein level, the histone deacetylase inhibitor downregulated RAD51 and FANCD2. This study aims to demonstrate that combining an HDACi, alkylating agent and PARPi could potentially enhance the treatment of melanoma, which is commonly recognized as being among the most aggressive malignant tumors. The findings presented here point to a scenario in which HDACs, via enhancing the HR-dependent repair of DSBs created during the processing of DNA lesions, are essential nodes in the resistance of malignant melanoma cells to methylating agent-based therapies.
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Affiliation(s)
- Małgorzata Drzewiecka
- Laboratory of Medical Genetics Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland
| | - Anna Gajos-Michniewicz
- Department of Molecular Biology of Cancer, Medical University of Lodz, 92-215 Lodz, Poland
| | - Grażyna Hoser
- Department of Flow Cytometry, Medical Center for Postgraduate Education, 01-813 Warsaw, Poland
| | - Dominika Jaśniak
- Laboratory of Medical Genetics Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland
| | | | - Przemysław Sitarek
- Department of Medical Biology, Medical University of Lodz, ul. Muszyńskiego 1, 90-151 Lodz, Poland
| | - Piotr Czarny
- Department of Medical Biochemistry, Medical University of Lodz, 92-216 Lodz, Poland
| | - Janusz Piekarski
- Department of Surgical Oncology, Medical University of Lodz, 90-419 Lodz, Poland
| | - Maciej Radek
- Department of Neurosurgery, Surgery of Spine and Peripheral Nerves, Medical University of Lodz, University Hospital WAM-CSW, 90-549 Lodz, Poland
| | - Małgorzata Czyż
- Department of Molecular Biology of Cancer, Medical University of Lodz, 92-215 Lodz, Poland
| | - Tomasz Skorski
- Fels Cancer Institute for Personalized Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - Tomasz Śliwiński
- Laboratory of Medical Genetics Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland
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8
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Kundu M, Das S, Nandi S, Dhara D, Mandal M. Magnolol and Temozolomide exhibit a synergistic anti-glioma activity through MGMT inhibition. Biochim Biophys Acta Mol Basis Dis 2023:166782. [PMID: 37286145 DOI: 10.1016/j.bbadis.2023.166782] [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: 01/19/2023] [Revised: 05/27/2023] [Accepted: 05/29/2023] [Indexed: 06/09/2023]
Abstract
Temozolomide (TMZ) is the leading chemotherapeutic agent used for glioma therapy due to its good oral absorption and blood-brain barrier permeability. However, its anti-glioma efficacy may be limited due to its adverse effects and resistance development. O6-Methylguanine-DNA-methyltransferase (MGMT), an enzyme associated with TMZ resistance, is activated via the NF-κB pathway, which is found to be upregulated in glioma. TMZ also upregulates NF-κB signaling like many other alkylating agents. Magnolol (MGN), a natural anti-cancer agent, has been reported to inhibit NF-κB signaling in multiple myeloma, cholangiocarcinoma, and hepatocellular carcinoma. MGN has already shown promising results in anti-glioma therapy. However, the synergistic action of TMZ and MGN has not been explored. Therefore, we investigated the effect of TMZ and MGN treatment in glioma and observed their synergistic pro-apoptotic action in both in vitro and in vivo glioma models. To explore the mechanism of this synergistic action, we found that MGN inhibits MGMT enzyme both in vitro and in vivo glioma. Next, we established the link between NF-κB signaling and MGN-induced MGMT inhibition in glioma. MGN inhibits the phosphorylation of p65, a subunit of NF-κB, and its nuclear translocation to block NF-κB pathway activation in glioma. MGN-induced NF-κB inhibition results in the transcriptional inhibition of MGMT in glioma. TMZ and MGN combinatorial treatment also impedes p65 nuclear translocation to inhibit MGMT in glioma. We observed a similar effect of TMZ and MGN treatment in the rodent glioma model. Thus, we concluded that MGN potentiates TMZ-induced apoptosis in glioma by inhibiting NF-κB pathway-mediated MGMT activation.
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Affiliation(s)
- Moumita Kundu
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India.
| | - Subhayan Das
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India.
| | - Suvendu Nandi
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Dibakar Dhara
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, India.
| | - Mahitosh Mandal
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India.
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9
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Che J, DePalma TJ, Sivakumar H, Mezache LS, Tallman MM, Venere M, Swindle-Reilly K, Veeraraghavan R, Skardal A. αCT1 peptide sensitizes glioma cells to temozolomide in a glioblastoma organoid platform. Biotechnol Bioeng 2023; 120:1108-1119. [PMID: 36544242 DOI: 10.1002/bit.28313] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 12/05/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022]
Abstract
Glioblastoma (GBM) is the most common form of brain cancer. Even with aggressive treatment, tumor recurrence is almost universal and patient prognosis is poor because many GBM cell subpopulations, especially the mesenchymal and glioma stem cell populations, are resistant to temozolomide (TMZ), the most commonly used chemotherapeutic in GBM. For this reason, there is an urgent need for the development of new therapies that can more effectively treat GBM. Several recent studies have indicated that high expression of connexin 43 (Cx43) in GBM is associated with poor patient outcomes. It has been hypothesized that inhibition of the Cx43 hemichannels could prevent TMZ efflux and sensitize otherwise resistance cells to the treatment. In this study, we use a three-dimensional organoid model of GBM to demonstrate that combinatorial treatment with TMZ and αCT1, a Cx43 mimetic peptide, significantly improves treatment efficacy in certain populations of GBM. Confocal imaging was used to visualize changes in Cx43 expression in response to combinatorial treatment. These results indicate that Cx43 inhibition should be pursued further as an improved treatment for GBM.
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Affiliation(s)
- Jingru Che
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
| | - Thomas J DePalma
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
- The Ohio State University and Arthur G. James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio, USA
| | | | - Louisa S Mezache
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
- Biomedical Sciences Graduate Program, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Miranda M Tallman
- Dorothy M. Davis Hearth and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
- Department of Radiation Oncology, James Cancer Hospital and Comprehensive Cancer Center, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Monica Venere
- The Ohio State University and Arthur G. James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio, USA
- Department of Radiation Oncology, James Cancer Hospital and Comprehensive Cancer Center, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Katelyn Swindle-Reilly
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio, USA
- Department of Ophthalmology and Visual Science, The Ohio State University, Columbus, Ohio, USA
| | - Rengasayee Veeraraghavan
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
- Biomedical Sciences Graduate Program, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Aleksander Skardal
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
- The Ohio State University and Arthur G. James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio, USA
- Center for Cancer Engineering, The Ohio State University, Columbus, Ohio, USA
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10
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Li J, Song C, Gu J, Li C, Zang W, Shi L, Chen L, Zhu L, Zhou M, Wang T, Li H, Qi S, Lu Y. RBBP4 regulates the expression of the Mre11-Rad50-NBS1 (MRN) complex and promotes DNA double-strand break repair to mediate glioblastoma chemoradiotherapy resistance. Cancer Lett 2023; 557:216078. [PMID: 36736531 DOI: 10.1016/j.canlet.2023.216078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 12/27/2022] [Accepted: 01/28/2023] [Indexed: 02/05/2023]
Abstract
For treatment of glioblastoma (GBM), temozolomide (TMZ) and radiotherapy (RT) exert antitumor effects by inducing DNA double-strand breaks (DSBs), mainly via futile DNA mismatch repair (MMR) and inducing apoptosis. Here, we provide evidence that RBBP4 modulates glioblastoma resistance to chemotherapy and radiotherapy by recruiting transcription factors and epigenetic regulators that bind to their promoters to regulate the expression of the Mre11-Rad50-NBS1(MRN) complex and the level of DNA-DSB repair, which are closely associated with recovery from TMZ- and radiotherapy-induced DNA damage in U87MG and LN229 glioblastoma cells, which have negative MGMT expression. Disruption of RBBP4 induced GBM cell DNA damage and apoptosis in response to TMZ and radiotherapy and enhanced radiotherapy and chemotherapy sensitivity by the independent pathway of MGMT. These results displayed a possible chemo-radioresistant mechanism in MGMT negative GBM. In addition, the RBBP4-MRN complex regulation axis may provide an interesting target for developing therapy-sensitizing strategies for GBM.
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Affiliation(s)
- Junjie Li
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China; Nanfang Neurology Research Institution, Nanfang Hospital, Southern Medical University, Guangzhou, China; Nanfang Glioma Center, Guangzhou, China
| | - Chong Song
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China; Department of Neurosurgery, The Central Hospital of Dalian University of Technology, Dalian, China
| | - Junwei Gu
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China; The First People's Hospital of Xiushui County, Jiujiang, Jiangxi Province, China
| | - Chiyang Li
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wenrui Zang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Linyong Shi
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lei Chen
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Liwen Zhu
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Min Zhou
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Tong Wang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hong Li
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China; Nanfang Neurology Research Institution, Nanfang Hospital, Southern Medical University, Guangzhou, China; Nanfang Glioma Center, Guangzhou, China
| | - Songtao Qi
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China; Nanfang Neurology Research Institution, Nanfang Hospital, Southern Medical University, Guangzhou, China; Nanfang Glioma Center, Guangzhou, China
| | - Yuntao Lu
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China; Nanfang Neurology Research Institution, Nanfang Hospital, Southern Medical University, Guangzhou, China; Nanfang Glioma Center, Guangzhou, China.
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11
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Kuduvalli SS, Daisy PS, Vaithy A, Purushothaman M, Ramachandran Muralidharan A, Agiesh KB, Mezger M, Antony JS, Subramani M, Dubashi B, Biswas I, Guruprasad KP, Anitha TS. A combination of metformin and epigallocatechin gallate potentiates glioma chemotherapy in vivo. Front Pharmacol 2023; 14:1096614. [PMID: 37025487 PMCID: PMC10070706 DOI: 10.3389/fphar.2023.1096614] [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: 11/17/2022] [Accepted: 03/02/2023] [Indexed: 04/08/2023] Open
Abstract
Glioma is the most devastating high-grade tumor of the central nervous system, with dismal prognosis. Existing treatment modality does not provide substantial benefit to patients and demands novel strategies. One of the first-line treatments for glioma, temozolomide, provides marginal benefit to glioma patients. Repurposing of existing non-cancer drugs to treat oncology patients is gaining momentum in recent years. In this study, we investigated the therapeutic benefits of combining three repurposed drugs, namely, metformin (anti-diabetic) and epigallocatechin gallate (green tea-derived antioxidant) together with temozolomide in a glioma-induced xenograft rat model. Our triple-drug combination therapy significantly inhibited tumor growth in vivo and increased the survival rate (50%) of rats when compared with individual or dual treatments. Molecular and cellular analyses revealed that our triple-drug cocktail treatment inhibited glioma tumor growth in rat model through ROS-mediated inactivation of PI3K/AKT/mTOR pathway, arrest of the cell cycle at G1 phase and induction of molecular mechanisms of caspases-dependent apoptosis.In addition, the docking analysis and quantum mechanics studies performed here hypothesize that the effect of triple-drug combination could have been attributed by their difference in molecular interactions, that maybe due to varying electrostatic potential. Thus, repurposing metformin and epigallocatechin gallate and concurrent administration with temozolomide would serve as a prospective therapy in glioma patients.
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Affiliation(s)
- Shreyas S. Kuduvalli
- Mahatma Gandhi Medical Advanced Research Institute (MGMARI), Sri Balaji Vidyapeeth (Deemed to-be University), Puducherry, India
| | - Precilla S. Daisy
- Mahatma Gandhi Medical Advanced Research Institute (MGMARI), Sri Balaji Vidyapeeth (Deemed to-be University), Puducherry, India
| | - Anandraj Vaithy
- Department of Pathology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth (Deemed to-be University), Puducherry, India
| | | | - Arumugam Ramachandran Muralidharan
- Department of Visual Neurosciences, Singapore Eye Research Institute, Singapore, Singapore
- Eye-APC, Duke-NUS Medical School, Singapore, Singapore
| | - Kumar B. Agiesh
- Mahatma Gandhi Medical Advanced Research Institute (MGMARI), Sri Balaji Vidyapeeth (Deemed to-be University), Puducherry, India
| | - Markus Mezger
- University Children’s Hospital Tübingen, Department of General Paediatrics, Haematology /Oncology, Tübingen, Germany
| | - Justin S. Antony
- University Children’s Hospital Tübingen, Department of General Paediatrics, Haematology /Oncology, Tübingen, Germany
| | | | - Biswajit Dubashi
- Department of Medical Oncology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | - Indrani Biswas
- Mahatma Gandhi Medical Advanced Research Institute (MGMARI), Sri Balaji Vidyapeeth (Deemed to-be University), Puducherry, India
| | - K. P. Guruprasad
- Department of Ageing Research, Manipal School of Life Sciences, MAHE, Manipal, Karnataka, India
| | - T. S. Anitha
- Mahatma Gandhi Medical Advanced Research Institute (MGMARI), Sri Balaji Vidyapeeth (Deemed to-be University), Puducherry, India
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12
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Construction of a novel blood brain barrier-glioma microfluidic chip model: Applications in the evaluation of permeability and anti-glioma activity of traditional Chinese medicine components. Talanta 2023; 253:123971. [PMID: 36201955 DOI: 10.1016/j.talanta.2022.123971] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/20/2022] [Accepted: 09/24/2022] [Indexed: 12/31/2022]
Abstract
Since most anti-glioma drug candidates hardly permeate through the blood-brain barrier (BBB), preclinical models that can integrate the complexity of the tumor microenvironment and the structure and function of the BBB is urgently needed for the treatment of glioma. Herein, we constructed an in vitro BBB-glioma microfluidic chip model lined by primary human brain microvascular endothelial cells, pericytes, astrocytes and glioma cells, which could recapitulate the high level of barrier function of the in vivo human BBB and glioma microenvironment. The BBB unit in BBB-glioma microfluidic chip (BBB-U251 chip) displayed selective permeability to fluorescein isothiocyanate isomer-dextran (FITC-dextran) with different molecular weights and three model drugs with different permeability behavior across BBB, which indicated that this glioma model included a functional barrier. Six potential anti-glioma components in traditional Chinese medicine (TCM) were delivered into the blood channel and the permeated amount was quantified by high-performance liquid chromatography combined with ultraviolet (HPLC-UV). The permeated drugs then directly acted on 3D cultured glioma cells (U251) to evaluate the drug efficacy. The results of permeability coefficients of drugs showed that the data were closer to the in vivo data of traditional Transwell model. The effect of the drugs on U251 cells in the BBB-U251 chip was significantly lower due to the existence of BBB. Drug responses on glioma demonstrated the necessity to take BBB into account during the development of anti-glioma new drugs. Therefore, this 3D glioma microfluidic models integrating the BBB functionality can be a useful platform for screening the anticancer drug for brain tumors.
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13
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Miretti M, Graglia MAG, Suárez AI, Prucca CG. Photodynamic Therapy for glioblastoma: a light at the end of the tunnel. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2023. [DOI: 10.1016/j.jpap.2023.100161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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14
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Sinha S, Ayushman M, Tong X, Yang F. Dynamically Crosslinked Poly(ethylene-glycol) Hydrogels Reveal a Critical Role of Viscoelasticity in Modulating Glioblastoma Fates and Drug Responses in 3D. Adv Healthc Mater 2023; 12:e2202147. [PMID: 36239185 PMCID: PMC9813196 DOI: 10.1002/adhm.202202147] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/28/2022] [Indexed: 02/03/2023]
Abstract
Glioblastoma multiforme (GBM) is the most prevalent and aggressive brain tumor in adults. Hydrogels have been employed as 3D in vitro culture models to elucidate how matrix cues such as stiffness and degradation drive GBM progression and drug responses. Recently, viscoelasticity has been identified as an important niche cue in regulating stem cell differentiation and morphogenesis in 3D. Brain is a viscoelastic tissue, yet how viscoelasticity modulates GBM fate and drug response remains largely unknown. Using dynamic hydrazone crosslinking chemistry, a poly(ethylene-glycol)-based hydrogel system with brain-mimicking stiffness and tunable stress relaxation is reported to interrogate the role of viscoelasticity on GBM fates in 3D. The hydrogel design allows tuning stress relaxation without changing stiffness, biochemical ligand density, or diffusion. The results reveal that increasing stress relaxation promotes invasive GBM behavior, such as cell spreading, migration, and GBM stem-like cell marker expression. Furthermore, increasing stress relaxation enhances GBM proliferation and drug sensitivity. Stress-relaxation induced changes on GBM fates and drug response are found to be mediated through the cytoskeleton and transient receptor potential vanilloid-type 4. These results highlight the importance of incorporating viscoelasticity into 3D in vitro GBM models and provide novel insights into how viscoelasticity modulates GBM cell fates.
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Affiliation(s)
- Sauradeep Sinha
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Manish Ayushman
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Xinming Tong
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Fan Yang
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
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15
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Sugimoto S, Ishida T, Kawada K, Jobu K, Morisawa S, Tamura N, Takuma D, Yoshioka S, Miyamura M. Central Nervous System Ischemia Associated with Bevacizumab: An Analysis of the Japanese Adverse Drug Event Report Database. Biol Pharm Bull 2022; 45:1805-1811. [DOI: 10.1248/bpb.b22-00496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Shohei Sugimoto
- Graduate School of Integrated Arts and Sciences, Kochi University
| | | | - Kei Kawada
- Graduate School of Integrated Arts and Sciences, Kochi University
| | - Kohei Jobu
- Department of Pharmacy, Kochi Medical School Hospital
| | | | - Naohisa Tamura
- Graduate School of Integrated Arts and Sciences, Kochi University
| | | | - Saburo Yoshioka
- Graduate School of Integrated Arts and Sciences, Kochi University
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16
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M A, Xavier J, A S F, Bisht P, Murti K, Ravichandiran V, Kumar N. Epigenetic basis for PARP mutagenesis in glioblastoma: A review. Eur J Pharmacol 2022; 938:175424. [PMID: 36442619 DOI: 10.1016/j.ejphar.2022.175424] [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: 10/10/2022] [Revised: 11/14/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Abstract
Several modifications in the glioblastoma genes are caused by epigenetic modifications, which are crucial in appropriate developmental processes such as self-renewal and destiny determination of neural stem cells. Poly (ADP-ribose)polymerase (PARP) is an essential cofactor involved in DNA repair as well as several other cellular functions such as transcription and chromatin shape modification. Inhibiting PARP has evolved for triggering cell damage in cancerous cells when paired with certain other anticancer drugs including temozolomide (TMZ). PARP1 is involved with in base excision repair (BER) pathway, however its functionality differs across types of tumours. Epigenomics as well as chromosomal statistics have contributed to the growth of main subgroups of glioma, which serve as foundation for the categorization of central nervous system (CNS) tumours as well as a unique classification based only on DNA methylation information, which demonstrates extraordinary diagnostic accuracy. Unfortunately, not all patients respond to PARP inhibitors (PARPi), and there is no way to anticipate who will and who will not. In this field, PARPi are one of the innovative medicines currently being explored. As a result, cancer cells that also have a homologous recombination defect become fatal synthetically. As well as preparing the tumour microenvironment for immunotherapy, PARPi may enhance the lethal effects of chemotherapy and radiotherapy. This article analyzes the justification and clinical evidence for PARPi in glioma to offer potential therapeutic approaches. Despite the effectiveness of these targeted drugs, researchers have looked into a number of resistance mechanisms as well as the growing usage of PARPi in clinical practice for the treatment of various malignancies.
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Affiliation(s)
- Anu M
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Hajipur, Vaishali, Bihar, 844102, India
| | - Joyal Xavier
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, Vaishali, Bihar, 844102, India
| | - Fathima A S
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Hajipur, Vaishali, Bihar, 844102, India
| | - Priya Bisht
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, Vaishali, Bihar, 844102, India
| | - Krishna Murti
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Hajipur, Vaishali, Bihar, 844102, India
| | - V Ravichandiran
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Hajipur, Vaishali, Bihar, 844102, India; Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, Vaishali, Bihar, 844102, India; Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Hajipur, Vaishali, Bihar, 844102, India
| | - Nitesh Kumar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, Vaishali, Bihar, 844102, India.
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17
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Deng B, Zhao Z, Kong W, Han C, Shen X, Zhou C. Biological role of matrix stiffness in tumor growth and treatment. J Transl Med 2022; 20:540. [PMID: 36419159 PMCID: PMC9682678 DOI: 10.1186/s12967-022-03768-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 11/09/2022] [Indexed: 11/24/2022] Open
Abstract
In recent years, the biological role of changes in physical factors in carcinogenesis and progression has attracted increasing attention. Matrix stiffness, also known as ECM stress, is a critical physical factor of tumor microenvironment and remains alternating during carcinogenesis as a result of ECM remodeling through activation of cancer-associated fibroblasts and extracellular collagen accumulation, crosslinking and fibrosis. Different content and density of extracellular collagen in ECM endows matrix with varying stiffness. Physical signals induced by matrix stiffness are transmitted to tumor cells primarily by the integrins receptor family and trigger a series of mechanotransduction that result in changes in tumor cell morphology, proliferative capacity, and invasive ability. Importantly, accumulating evidence revealed that changes in matrix stiffness in tumor tissues greatly control the sensitivity of tumor cells in response to chemotherapy, radiotherapy, and immunotherapy through integrin signaling, YAP signaling, and related signaling pathways. Here, the present review analyzes the current research advances on matrix stiffness and tumor cell behavior with a view to contributing to tumor cell growth and treatment, with the hope of improving the understanding of the biological role of matrix stiffness in tumors.
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Affiliation(s)
- Boer Deng
- grid.24696.3f0000 0004 0369 153XDepartment of Gynecologic Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, People’s Republic of China ,grid.10698.360000000122483208Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 USA
| | - Ziyi Zhao
- grid.24696.3f0000 0004 0369 153XDepartment of Gynecologic Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, People’s Republic of China ,grid.10698.360000000122483208Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 USA
| | - Weimin Kong
- grid.24696.3f0000 0004 0369 153XDepartment of Gynecologic Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, People’s Republic of China ,grid.10698.360000000122483208Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 USA
| | - Chao Han
- grid.24696.3f0000 0004 0369 153XDepartment of Gynecologic Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, People’s Republic of China
| | - Xiaochang Shen
- grid.24696.3f0000 0004 0369 153XDepartment of Gynecologic Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, People’s Republic of China ,grid.10698.360000000122483208Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 USA
| | - Chunxiao Zhou
- grid.10698.360000000122483208Division of Gynecologic Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 USA ,grid.10698.360000000122483208Lineberger Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 USA
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18
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Chang HH, Lin YH, Chen TM, Tsai YL, Lai CR, Tsai WC, Cheng YC, Chen Y. ONX-0914 Induces Apoptosis and Autophagy with p53 Regulation in Human Glioblastoma Cells. Cancers (Basel) 2022; 14:cancers14225712. [PMID: 36428804 PMCID: PMC9688407 DOI: 10.3390/cancers14225712] [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: 10/23/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022] Open
Abstract
Glioblastoma is believed to be one of the most aggressive brain tumors in the world. ONX-0914 (PR957) is a selective inhibitor of proteasome subunit beta type-8 (PSMB8). Previous studies have shown that inhibiting PSMB8 expression in glioblastoma reduces tumor progression. Therefore, this study aimed to determine whether ONX-0914 has antitumor effects on human glioblastoma. The results indicated that ONX-0914 treatment inhibited survival in LN229, GBM8401, and U87MG glioblastoma cells. Cell cycle analysis showed that ONX-0914 treatment caused cell cycle arrest at the G1 phase and apoptosis in glioblastoma cells. The protein expression of BCL-2 was reduced and PARP was cleaved after ONX-0914 treatment. Furthermore, the levels of p53 and phosphorylated p53 were increased by ONX-0914 treatment in glioblastoma cells. ONX-0914 also induced autophagy in glioblastoma cells. Furthermore, the p53 inhibitor pifithrin attenuated apoptosis but enhanced autophagy caused by ONX-0914. In an orthotopic mouse model, TMZ plus ONX-0914 reduced tumor progression better than the control or TMZ alone. These data suggest that ONX-0914 is a novel therapeutic drug for glioblastoma.
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Affiliation(s)
- Hsin-Han Chang
- Department of Biology and Anatomy, National Defense Medical Center, Taipei 114201, Taiwan
- Department of Nursing, Ching Kuo Institute of Management and Health, Keelung 203301, Taiwan
| | - Yi-Hsuan Lin
- Department of Biology and Anatomy, National Defense Medical Center, Taipei 114201, Taiwan
| | - Tzu-Min Chen
- Department of Biology and Anatomy, National Defense Medical Center, Taipei 114201, Taiwan
| | - Yu-Ling Tsai
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| | - Chien-Rui Lai
- Department of Biology and Anatomy, National Defense Medical Center, Taipei 114201, Taiwan
| | - Wen-Chiuan Tsai
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| | - Yu-Chen Cheng
- Department of Biology and Anatomy, National Defense Medical Center, Taipei 114201, Taiwan
- Correspondence: (Y.-C.C.); (Y.C.); Tel.: +886-2-8792-3100 (ext. 18739) (Y.C.)
| | - Ying Chen
- Department of Biology and Anatomy, National Defense Medical Center, Taipei 114201, Taiwan
- Correspondence: (Y.-C.C.); (Y.C.); Tel.: +886-2-8792-3100 (ext. 18739) (Y.C.)
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19
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Prodigiosin inhibits the proliferation of glioblastoma by regulating the KIAA1524/PP2A signaling pathway. Sci Rep 2022; 12:18527. [PMID: 36323805 PMCID: PMC9630538 DOI: 10.1038/s41598-022-23186-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 10/26/2022] [Indexed: 11/20/2022] Open
Abstract
Prodigiosin (PG), a member of a family of natural red pigments produced by a variety of bacteria, was first discovered in Serratia marcescens. PG has been reported to have an apoptosis-inducing effect in many cancers, such as lymphoma, colon cancer and nasopharyngeal carcinoma. For this study, we used three glioblastoma (GBM) cell lines (LN229, U251 and A172) to explore the effect of prodigiosin on GBM cells. A CCK8 assay was used to evaluate cell viability. We determinedthe cell cycle distribution by flow cytometry and measured proliferation by an EdU incorporation assay. The expression of different molecules was investigated by western blotting and RT-PCR. We further confirmed our results by plasmid transfection and lentiviral transduction. The LN229 xenograft model was used to study the effect of prodigiosin in vivo. We confirmed that prodigiosin played an anticancer role in several GBM cell lines through the KIAA1524/PP2A/Akt signalling pathway. Prodigiosin inhibited the protein expression of KIAA1524 by suppressing its transcription, which led to activation of PP2A. Afterward, PP2A inhibited the phosphorylation of Akt, thereby inducing increased expression of p53/p21. Furthermore, it was verified that prodigiosin inhibited the KIAA1524/PP2A/Akt axis in vivo in the LN229 xenograft model. These data improve the understanding of the anticancer effects of prodigiosin and further highlight the potential of prodigiosin for the development of anti-glioma drugs.
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Exosomal microRNA-222-3p increases UVB sensitivity of lens epithelium cells by suppressing MGMT. Int Ophthalmol 2022; 43:1611-1628. [PMID: 36319884 DOI: 10.1007/s10792-022-02560-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 10/06/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Age-related cataract (ARC) is a leading cause of blindness worldwide with multiple pathogenic factors. Oxidative damage of lens epithelium cells (LECs) is one of the well-accepted pathogenesis of ARC which can be regulated by DNA repair genes (DRGs). The present research aimed to clarify the regulatory mechanism of exosomal microRNAs (miRNAs) on DRGs in LECs. METHODS The LECs oxidative damage model was established by UVB-irradiation on SRA01/04 (human lens epithelium cell line). Exosomes from UVB-irradiated cells (UVB-exo) and exosomes from normal control cells (NC-exo) were collected from the culture medium. To explore the functions of LECs exosomes, SRA01/04 were incubated with UVB-exo/NC-exo. Then, we detected SRA01/04 proliferation, viability and apoptosis respectively using 5'-ethynyl-2'-deoxyuridine (EdU), cell-counting kit-8 (CCK-8) and TdT-mediated dUTP Nick-End Labeling (TUNEL) assay. Next, the miRNA expression profiles of UVB-exo and NC-exo were identified by miRNA microarrays. RNA expression in exosomes, cells, and clinical samples was verified by qRT-PCR. The location and expression of MGMT and CD63 proteins were detected by immunofluorescence and western blot. The 3'UTR regulation of miR-222-3p to MGMT was verified by luciferase analyses. RESULTS MGMT down-regulated while miR-222-3p up-regulated in LECs sub-central anterior capsule from ARC lenses. MGMT and miR-222-3p expressions in central and peripheral LECs from anterior lens capsules were differential. UVB-exo can transport the up-regulated miR-222-3p from oxidative-damaged LECs to normal LECs, which could suppress MGMT expression and increase UVB sensitivity of LECs. CONCLUSIONS Findings on exosomal miRNA functions provided novel insights into pathogenesis of ARC. Exosomal miR-222-3p can be a potential target for prevention and cure of ARC.
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Rosa P, Scibetta S, Pepe G, Mangino G, Capocci L, Moons SJ, Boltje TJ, Fazi F, Petrozza V, Di Pardo A, Maglione V, Calogero A. Polysialic Acid Sustains the Hypoxia-Induced Migration and Undifferentiated State of Human Glioblastoma Cells. Int J Mol Sci 2022; 23:ijms23179563. [PMID: 36076963 PMCID: PMC9455737 DOI: 10.3390/ijms23179563] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/18/2022] [Accepted: 08/20/2022] [Indexed: 12/15/2022] Open
Abstract
Gliomas are the most common primary malignant brain tumors. Glioblastoma, IDH-wildtype (GBM, CNS WHO grade 4) is the most aggressive form of glioma and is characterized by extensive hypoxic areas that strongly correlate with tumor malignancy. Hypoxia promotes several processes, including stemness, migration, invasion, angiogenesis, and radio- and chemoresistance, that have direct impacts on treatment failure. Thus, there is still an increasing need to identify novel targets to limit GBM relapse. Polysialic acid (PSA) is a carbohydrate composed of a linear polymer of α2,8-linked sialic acids, primarily attached to the Neural Cell Adhesion Molecule (NCAM). It is considered an oncodevelopmental antigen that is re-expressed in various tumors. High levels of PSA-NCAM are associated with high-grade and poorly differentiated tumors. Here, we investigated the effect of PSA inhibition in GBM cells under low oxygen concentrations. Our main results highlight the way in which hypoxia stimulates polysialylation in U87-MG cells and in a GBM primary culture. By lowering PSA levels with the sialic acid analog, F-NANA, we also inhibited GBM cell migration and interfered with their differentiation influenced by the hypoxic microenvironment. Our findings suggest that PSA may represent a possible molecular target for the development of alternative pharmacological strategies to manage a devastating tumor like GBM.
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Affiliation(s)
- Paolo Rosa
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome “Sapienza”, Polo Pontino, C.so della Repubblica 79, 04100 Latina, Italy
- Correspondence:
| | - Sofia Scibetta
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome “Sapienza”, Polo Pontino, C.so della Repubblica 79, 04100 Latina, Italy
| | - Giuseppe Pepe
- IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, Italy
| | - Giorgio Mangino
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome “Sapienza”, Polo Pontino, C.so della Repubblica 79, 04100 Latina, Italy
| | - Luca Capocci
- IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, Italy
| | - Sam J. Moons
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Thomas J. Boltje
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Francesco Fazi
- Department of Anatomical, Histological, Forensic & Orthopedic Sciences, Section of Histology & Medical Embryology, University of Rome “Sapienza”, Via A. Scarpa, 14-16, 00161 Rome, Italy
| | - Vincenzo Petrozza
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome “Sapienza”, Polo Pontino, C.so della Repubblica 79, 04100 Latina, Italy
- ICOT, Istituto Chirurgico Ortopedico Traumatologico, Via F. Faggiana 1668, 04100 Latina, Italy
| | - Alba Di Pardo
- IRCCS Neuromed, Via Dell’Elettronica, 86077 Pozzilli, Italy
| | | | - Antonella Calogero
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome “Sapienza”, Polo Pontino, C.so della Repubblica 79, 04100 Latina, Italy
- ICOT, Istituto Chirurgico Ortopedico Traumatologico, Via F. Faggiana 1668, 04100 Latina, Italy
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Chen H, Li C, Hu H, Zhang B. Activated TRPA1 plays a therapeutic role in TMZ resistance in glioblastoma by altering mitochondrial dynamics. BMC Mol Cell Biol 2022; 23:38. [PMID: 35982414 PMCID: PMC9389719 DOI: 10.1186/s12860-022-00438-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 08/05/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Glioblastoma (GBM) represents nearly one-half of primary brain tumors, and the median survival of patients with GBM is only 14.6 months. Surgery followed by radiation with concomitant temozolomide (TMZ) therapy is currently the standard of care. However, an increasing body of evidence suggests that GBM acquires resistance to TMZ, compromising the effect of the drug. Thus, further exploration into the mechanism underlying this resistance is urgently needed. Studies have demonstrated that TMZ resistance is associated with DNA damage, followed by altered reactive oxygen species (ROS) production in mitochondria. Studies have also showed that Ca2+-related transient receptor potential (TRP) channels participate in GBM cell proliferation and metastasis, but the detailed mechanism of their involvement remain to be studied. The present study demonstrates the role played by TRPA1 in TMZ resistance in GBM and elucidates the mechanism of resistance.
Methods
U251 and SHG-44 cells were analyzed in vitro. A CCK-8 assay was performed to verify the effect of TMZ toxicity on GBM cells. Intracellular ROS levels were detected by DCFH-DA assay. A MitoSOX Red assay was performed to determine the mitochondrial ROS levels. Intracellular Ca2+ levels in the cells were determined with a Fluo-4 AM calcium assay kit. Intracellular GSH levels were determined with GSH and GSSG Assay Kit. MGMT protein, Mitochondrial fission- and fusion-, apoptosis- and motility-related protein expression was detected by western blot assay. A recombinant lentiviral vector was used to infect human U251 cells to overexpress shRNA and generate TRPA1+/+ and negative control cells. All experiments were repeated.
Results
In the U251 and SHG-44 cells, TMZ induced a small increase in the apoptosis rate and intracellular and mitochondrial ROS levels. The expression of antioxidant genes and antioxidants in these cells was also increased by TMZ. However, pretreatment with a TRPA1 agonist significantly decreased the level of antioxidant gene and antioxidants expression and enhanced intracellular and mitochondrial ROS levels. Also TMZ induced the level of MGMT protein increased, and pretreatment with a TRPA1 agonist decreased the MGMT expression. Moreover, Ca2+ influx, mitochondrial damage and cell apoptosis were promoted, and the balance between mitochondrial fission and fusion protein expression was disrupted in these GBM cells. Pretreatment with a TRPA1 inhibitor slightly enhanced the level of antioxidant gene expression and reduced the apoptosis rate. TRPA1 gene overexpression in the U251 cells was similar to that after inhibitor intervention, confirming the aforementioned experimental results.
Conclusion
The present study proved that activating TRPA1 in glioma cells, which leads to mitochondrial damage and dysfunction and ultimately to apoptosis, may decrease the TMZ resistance of GBM cells.
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Ozgiray E, Sogutlu F, Biray Avci C. Chk1/2 inhibitor AZD7762 enhances the susceptibility of IDH-mutant brain cancer cells to temozolomide. MEDICAL ONCOLOGY (NORTHWOOD, LONDON, ENGLAND) 2022; 39:166. [PMID: 35972603 DOI: 10.1007/s12032-022-01769-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 06/13/2022] [Indexed: 11/28/2022]
Abstract
The IDH mutation initially exhibits chemosensitive properties, progression-free survival cannot be achieved in the later grades, and malignant transformation occurs as a result of TMZ-induced hypermutation profile and adaptation to this profile. In this study, we evaluated the potential of the combination of TMZ and AZD7762 at molecular level, to increase the anticancer activity of TMZ in IDH-mutant U87-mg cells. We used the WST-1 test to evaluate cytotoxic effect of TMZ and AZD7762 combination with dose-effect and isobologram curves. The effects of the inhibitory and effective concentrations of the combination on apoptosis, cell cycle and γ-H2AX phosphorylation were analyzed with flow cytometry. The expression of genes responsible for the DNA damage response was analyzed with qRT-PCR. The combination showed a synergistic effect with high dose reduction index. Single and combined administrations of TMZ and AZD7762 increased in G2/M arrest from 24 to 48 h, and cells in the G2/M phase shifted towards octaploidy at 72 h. While no double-strand breaks were detected after TMZ treatment, AZD7762 and combination treatments caused a significant increase in γ-H2AX phosphorylation and increased apoptotic stimulation towards 72 h although TMZ did not cause apoptotic effect in IDH-mutant U87-mg cells. The genes controlling the apoptosis were determined to be upregulated in all three groups, and genes regarding cell cycle checkpoints were downregulated. Targeting Chk1/2 with AZD7762 simultaneously with TMZ may be a potential therapeutic strategy for both increasing the sensitivity of IDH-mutant glioma cells to TMZ and reducing the dose of TMZ. In IDH-mutant glioma cells, AZD7762, the Chk1/2 inhibitor, can increase the efficacy of Temozolomide by (i) increasing mitotic chaos, and (ii) inhibiting double-strand break repair, (iii) thereby inducing cell death.
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Affiliation(s)
- Erkin Ozgiray
- Department of Neurosurgery, Medicine Faculty, Ege University, Izmir, Turkey
| | - Fatma Sogutlu
- Department of Medical Biology, Medicine Faculty, Ege University, Izmir, Turkey
| | - Cigir Biray Avci
- Department of Medical Biology, Medicine Faculty, Ege University, Izmir, Turkey.
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ZSTK474 Sensitizes Glioblastoma to Temozolomide by Blocking Homologous Recombination Repair. BIOMED RESEARCH INTERNATIONAL 2022; 2022:8568528. [PMID: 35872860 PMCID: PMC9300311 DOI: 10.1155/2022/8568528] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/31/2022] [Accepted: 06/20/2022] [Indexed: 11/17/2022]
Abstract
Glioblastoma (GBM) is the most common primary malignant brain tumor in adults. Temozolomide (TMZ) is used as the standard chemotherapeutic agent for GBM but with limited success, and treatment failure is mainly due to tumor resistance. One of the leading causes of TMZ resistance is the upregulation of the DNA repair mechanism. Therefore, targeting the DNA damage response (DDR) is proposed to be an effective strategy to sensitize tumor cells to TMZ. In the present study, we demonstrated that the combined use of the PI3K inhibitor ZSTK474 and TMZ showed synergetic anticancer effects on human GBM cells in vitro and in vivo. The combination treatment led to significantly increased cell apoptosis and DNA double strand breaks (DSBs). In addition, a mechanistic study indicated that TMZ enhanced the homologous recombination (HR) repair efficiency in GBM cells, while ZSTK474 impaired HR repair by blocking the phosphorylation of ATM and the expression of BRCA1/2 and Rad51, thereby sensitizing GBM cells to TMZ. Moreover, TMZ activated the PI3K signaling pathway through upregulation of the PI3K catalytic subunits p110α and p110β and the phosphorylation of Akt. Meanwhile, ZSTK474 blocked the activity of the PI3K/Akt pathway. Taken together, our findings suggested that the combination of ZSTK474 and TMZ might be a potential therapeutic option for GBM.
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25
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Kaina B, Beltzig L, Strik H. Temozolomide – Just a Radiosensitizer? Front Oncol 2022; 12:912821. [PMID: 35785203 PMCID: PMC9246413 DOI: 10.3389/fonc.2022.912821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/05/2022] [Indexed: 01/04/2023] Open
Abstract
Radiation concomitant with the DNA methylating drug temozolomide (TMZ) is the gold standard in the treatment of glioblastoma. In this adjuvant setting, TMZ is regarded to be a radiation sensitizer. However, similar to ionising radiation, TMZ induces DNA double-strand breaks and is itself a potent trigger of apoptosis, cellular senescence and autophagy, suggesting that radiation and TMZ act independently. Although cell culture experiments yielded heterogeneous results, some data indicate that the cytotoxic effect of radiation was only enhanced when TMZ was given before radiation treatment. Based on the molecular mechanism of action of TMZ, the importance of specific TMZ and radiation-induced DNA lesions, their repair as well as their interactions, possible scenarios for an additive or synergistic effect of TMZ and radiation are discussed, and suggestions for an optimal timing of radio-chemical treatments are proposed.
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Affiliation(s)
- Bernd Kaina
- Institute of Toxicology, University Medical Center, Mainz, Germany
- *Correspondence: Bernd Kaina,
| | - Lea Beltzig
- Institute of Toxicology, University Medical Center, Mainz, Germany
| | - Herwig Strik
- Department of Neurology, Sozialstiftung, Bamberg, Germany
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26
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Maksoud S. The DNA Double-Strand Break Repair in Glioma: Molecular Players and Therapeutic Strategies. Mol Neurobiol 2022; 59:5326-5365. [PMID: 35696013 DOI: 10.1007/s12035-022-02915-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 06/05/2022] [Indexed: 12/12/2022]
Abstract
Gliomas are the most frequent type of tumor in the central nervous system, which exhibit properties that make their treatment difficult, such as cellular infiltration, heterogeneity, and the presence of stem-like cells responsible for tumor recurrence. The response of this type of tumor to chemoradiotherapy is poor, possibly due to a higher repair activity of the genetic material, among other causes. The DNA double-strand breaks are an important type of lesion to the genetic material, which have the potential to trigger processes of cell death or cause gene aberrations that could promote tumorigenesis. This review describes how the different cellular elements regulate the formation of DNA double-strand breaks and their repair in gliomas, discussing the therapeutic potential of the induction of this type of lesion and the suppression of its repair as a control mechanism of brain tumorigenesis.
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Affiliation(s)
- Semer Maksoud
- Experimental Therapeutics and Molecular Imaging Unit, Department of Neurology, Neuro-Oncology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
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27
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Beltzig L, Schwarzenbach C, Leukel P, Frauenknecht KBM, Sommer C, Tancredi A, Hegi ME, Christmann M, Kaina B. Senescence Is the Main Trait Induced by Temozolomide in Glioblastoma Cells. Cancers (Basel) 2022; 14:2233. [PMID: 35565362 PMCID: PMC9102829 DOI: 10.3390/cancers14092233] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/15/2022] [Accepted: 04/21/2022] [Indexed: 01/15/2023] Open
Abstract
First-line drug in the treatment of glioblastoma, the most severe brain cancer, is temozolomide (TMZ), a DNA-methylating agent that induces the critical damage O6-methylguanine (O6MeG). This lesion is cytotoxic through the generation of mismatch repair-mediated DNA double-strand breaks (DSBs), which trigger apoptotic pathways. Previously, we showed that O6MeG also induces cellular senescence (CSEN). Here, we show that TMZ-induced CSEN is a late response which has similar kinetics to apoptosis, but at a fourfold higher level. CSEN cells show a high amount of DSBs, which are located outside of telomeres, a high level of ROS and oxidized DNA damage (8-oxo-guanine), and sustained activation of the DNA damage response and histone methylation. Despite the presence of DSBs, CSEN cells are capable of repairing radiation-induced DSBs. Glioblastoma cells that acquired resistance to TMZ became simultaneously resistant to TMZ-induced CSEN. Using a Tet-On glioblastoma cell system, we show that upregulation of MGMT immediately after TMZ completely abrogated apoptosis and CSEN, while induction of MGMT long-term (>72 h) after TMZ did not reduce apoptosis and CSEN. Furthermore, upregulation of MGMT in the senescent cell population had no impact on the survival of senescent cells, indicating that O6MeG is required for induction, but not for maintenance of the senescent state. We further show that, in recurrent GBM specimens, a significantly higher level of DSBs and CSEN-associated histone H3K27me3 was observed than in the corresponding primary tumors. Overall, the data indicate that CSEN is a key node induced in GBM following chemotherapy.
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Affiliation(s)
- Lea Beltzig
- Institute of Toxicology, University Medical Center, 55131 Mainz, Germany; (L.B.); (C.S.); (M.C.)
| | - Christian Schwarzenbach
- Institute of Toxicology, University Medical Center, 55131 Mainz, Germany; (L.B.); (C.S.); (M.C.)
| | - Petra Leukel
- Institute of Neuropathology, University Medical Center, 55131 Mainz, Germany; (P.L.); (K.B.M.F.); (C.S.)
| | - Katrin B. M. Frauenknecht
- Institute of Neuropathology, University Medical Center, 55131 Mainz, Germany; (P.L.); (K.B.M.F.); (C.S.)
| | - Clemens Sommer
- Institute of Neuropathology, University Medical Center, 55131 Mainz, Germany; (P.L.); (K.B.M.F.); (C.S.)
| | - Alessandro Tancredi
- Neuroscience Research Center and Neurosurgery, Lausanne University Hospital, H-1066 Epalinges, Switzerland; (A.T.); (M.E.H.)
| | - Monika E. Hegi
- Neuroscience Research Center and Neurosurgery, Lausanne University Hospital, H-1066 Epalinges, Switzerland; (A.T.); (M.E.H.)
| | - Markus Christmann
- Institute of Toxicology, University Medical Center, 55131 Mainz, Germany; (L.B.); (C.S.); (M.C.)
| | - Bernd Kaina
- Institute of Toxicology, University Medical Center, 55131 Mainz, Germany; (L.B.); (C.S.); (M.C.)
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Zhu Y, Chen Z, Kim SN, Gan C, Ryl T, Lesjak MS, Rodemerk J, Zhong RD, Wrede K, Dammann P, Sure U. Characterization of Temozolomide Resistance Using a Novel Acquired Resistance Model in Glioblastoma Cell Lines. Cancers (Basel) 2022; 14:cancers14092211. [PMID: 35565340 PMCID: PMC9101568 DOI: 10.3390/cancers14092211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/25/2022] [Accepted: 04/26/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Temozolomide (TMZ) is the first-line drug for chemotherapy of GBM, the most aggressive and incurable brain tumor. Acquired chemoresistance is a hallmark that causes the poor prognosis of GBM. Therefore, understanding the underlying mechanisms by using a proper model becomes emergent. Previous models usually take weeks/months and are often not fully representative of characteristics of TMZ resistance. We established an acute acquired TMZ resistance model using GBM cell lines with different genomic backgrounds. In response to TMZ, the resistant cells showed less susceptibility and sustained regrowth, high clonogenicity, reduced DNA damage accompanied by attenuated MMR, shortened G2/M arrest, uncontrolled DNA replication, and evasion of apoptosis. Moreover, these TMZ resistant cells presented stem cell properties that are critical for chemoresistance. Thus, our model recapitulates all key features of TMZ resistance and is believed to be a promising model to study the underlying mechanisms and define therapeutics for GBM in the future. Abstract Temozolomide (TMZ) is the first line of standard therapy in glioblastoma (GBM). However, relapse occurs due to TMZ resistance. We attempted to establish an acquired TMZ resistance model that recapitulates the TMZ resistance phenotype and the relevant gene signature. Two GBM cell lines received two cycles of TMZ (150 µM) treatment for 72 h each. Regrown cells (RG2) were defined as TMZ resistant cells. MTT assay revealed significantly less susceptibility and sustained growth of RG2 compared with parental cells after TMZ challenge. TMZ-induced DNA damage significantly decreased in 53BP1-foci reporter transduced-RG2 cells compared with parental cells, associated with downregulation of MSH2 and MSH6. Flow cytometry revealed reduced G2/M arrest, increased EdU incorporation and suppressed apoptosis in RG2 cells after TMZ treatment. Colony formation and neurosphere assay demonstrated enhanced clonogenicity and neurosphere formation capacity in RG2 cells, accompanied by upregulation of stem markers. Collectively, we established an acute TMZ resistance model that recapitulated key features of TMZ resistance involving impaired mismatch repair, redistribution of cell cycle phases, increased DNA replication, reduced apoptosis and enhanced self-renewal. Therefore, this model may serve as a promising research tool for studying mechanisms of TMZ resistance and for defining therapeutic approaches to GBM in the future.
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Affiliation(s)
- Yuan Zhu
- Department of Neurosurgery and Spine Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (Z.C.); (S.N.K.); (C.G.); (T.R.); (M.S.L.); (J.R.); (R.D.Z.); (K.W.); (P.D.); (U.S.)
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University of Duisburg-Essen, 45147 Essen, Germany
- Correspondence: ; Tel.: +0049-201-723-1231
| | - Zhen Chen
- Department of Neurosurgery and Spine Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (Z.C.); (S.N.K.); (C.G.); (T.R.); (M.S.L.); (J.R.); (R.D.Z.); (K.W.); (P.D.); (U.S.)
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University of Duisburg-Essen, 45147 Essen, Germany
| | - Su Na Kim
- Department of Neurosurgery and Spine Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (Z.C.); (S.N.K.); (C.G.); (T.R.); (M.S.L.); (J.R.); (R.D.Z.); (K.W.); (P.D.); (U.S.)
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University of Duisburg-Essen, 45147 Essen, Germany
| | - Chao Gan
- Department of Neurosurgery and Spine Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (Z.C.); (S.N.K.); (C.G.); (T.R.); (M.S.L.); (J.R.); (R.D.Z.); (K.W.); (P.D.); (U.S.)
| | - Tatsiana Ryl
- Department of Neurosurgery and Spine Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (Z.C.); (S.N.K.); (C.G.); (T.R.); (M.S.L.); (J.R.); (R.D.Z.); (K.W.); (P.D.); (U.S.)
| | - Michaela Silvia Lesjak
- Department of Neurosurgery and Spine Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (Z.C.); (S.N.K.); (C.G.); (T.R.); (M.S.L.); (J.R.); (R.D.Z.); (K.W.); (P.D.); (U.S.)
| | - Jan Rodemerk
- Department of Neurosurgery and Spine Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (Z.C.); (S.N.K.); (C.G.); (T.R.); (M.S.L.); (J.R.); (R.D.Z.); (K.W.); (P.D.); (U.S.)
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University of Duisburg-Essen, 45147 Essen, Germany
| | - Rong De Zhong
- Department of Neurosurgery and Spine Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (Z.C.); (S.N.K.); (C.G.); (T.R.); (M.S.L.); (J.R.); (R.D.Z.); (K.W.); (P.D.); (U.S.)
| | - Karsten Wrede
- Department of Neurosurgery and Spine Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (Z.C.); (S.N.K.); (C.G.); (T.R.); (M.S.L.); (J.R.); (R.D.Z.); (K.W.); (P.D.); (U.S.)
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University of Duisburg-Essen, 45147 Essen, Germany
| | - Philipp Dammann
- Department of Neurosurgery and Spine Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (Z.C.); (S.N.K.); (C.G.); (T.R.); (M.S.L.); (J.R.); (R.D.Z.); (K.W.); (P.D.); (U.S.)
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University of Duisburg-Essen, 45147 Essen, Germany
| | - Ulrich Sure
- Department of Neurosurgery and Spine Surgery, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (Z.C.); (S.N.K.); (C.G.); (T.R.); (M.S.L.); (J.R.); (R.D.Z.); (K.W.); (P.D.); (U.S.)
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University of Duisburg-Essen, 45147 Essen, Germany
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29
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Hanisch D, Krumm A, Diehl T, Stork CM, Dejung M, Butter F, Kim E, Brenner W, Fritz G, Hofmann TG, Roos WP. Class I HDAC overexpression promotes temozolomide resistance in glioma cells by regulating RAD18 expression. Cell Death Dis 2022; 13:293. [PMID: 35365623 PMCID: PMC8975953 DOI: 10.1038/s41419-022-04751-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 03/05/2022] [Accepted: 03/18/2022] [Indexed: 12/22/2022]
Abstract
Overexpression of histone deacetylases (HDACs) in cancer commonly causes resistance to genotoxic-based therapies. Here, we report on the novel mechanism whereby overexpressed class I HDACs increase the resistance of glioblastoma cells to the SN1 methylating agent temozolomide (TMZ). The chemotherapeutic TMZ triggers the activation of the DNA damage response (DDR) in resistant glioma cells, leading to DNA lesion bypass and cellular survival. Mass spectrometry analysis revealed that the catalytic activity of class I HDACs stimulates the expression of the E3 ubiquitin ligase RAD18. Furthermore, the data showed that RAD18 is part of the O6-methylguanine-induced DDR as TMZ induces the formation of RAD18 foci at sites of DNA damage. Downregulation of RAD18 by HDAC inhibition prevented glioma cells from activating the DDR upon TMZ exposure. Lastly, RAD18 or O6-methylguanine-DNA methyltransferase (MGMT) overexpression abolished the sensitization effect of HDAC inhibition on TMZ-exposed glioma cells. Our study describes a mechanism whereby class I HDAC overexpression in glioma cells causes resistance to TMZ treatment. HDACs accomplish this by promoting the bypass of O6-methylguanine DNA lesions via enhancing RAD18 expression. It also provides a treatment option with HDAC inhibition to undermine this mechanism.
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Affiliation(s)
- Daniela Hanisch
- Institute of Toxicology, Medical Center of the University Mainz, Obere Zahlbacher Straße 67, 55131, Mainz, Germany
| | - Andrea Krumm
- Institute of Toxicology, Medical Center of the University Mainz, Obere Zahlbacher Straße 67, 55131, Mainz, Germany
| | - Tamara Diehl
- Institute of Toxicology, Medical Center of the University Mainz, Obere Zahlbacher Straße 67, 55131, Mainz, Germany
| | - Carla M Stork
- Institute of Toxicology, Medical Center of the University Mainz, Obere Zahlbacher Straße 67, 55131, Mainz, Germany
| | - Mario Dejung
- Institute of Molecular Biology, Ackermannweg 4, 55128, Mainz, Germany
| | - Falk Butter
- Institute of Molecular Biology, Ackermannweg 4, 55128, Mainz, Germany
| | - Ella Kim
- Laboratory for Experimental Neurooncology, Clinic for Neurosurgery, Medical Center of the University Mainz, 55131, Mainz, Germany
| | - Walburgis Brenner
- Department of Obstetrics and Gynecology, University Medical Center Mainz, Langenbeckstraße 1, 55131, Mainz, Germany
| | - Gerhard Fritz
- Institute of Toxicology, Medical Faculty, Heinrich Heine University Duesseldorf, Moorenstrasse 5, 40225, Düsseldorf, Germany
| | - Thomas G Hofmann
- Institute of Toxicology, Medical Center of the University Mainz, Obere Zahlbacher Straße 67, 55131, Mainz, Germany
| | - Wynand P Roos
- Institute of Toxicology, Medical Center of the University Mainz, Obere Zahlbacher Straße 67, 55131, Mainz, Germany.
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Chiang IT, Liu YC, Liu HS, Ali AAA, Chou SY, Hsu TI, Hsu FT. Regorafenib Reverses Temozolomide-Induced CXCL12/CXCR4 Signaling and Triggers Apoptosis Mechanism in Glioblastoma. Neurotherapeutics 2022; 19:616-634. [PMID: 35267171 PMCID: PMC9226247 DOI: 10.1007/s13311-022-01194-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/25/2022] [Indexed: 12/13/2022] Open
Abstract
Temozolomide (TMZ) monotherapy is known to be insufficient for resistant/relapsed glioblastoma (GBM), thus seeking a sensitization agent for TMZ is necessary. It was found that regorafenib may improve the overall survival of relapsed GBM patients. We aimed to discover whether regorafenib can enhance the anti-GBM effects of TMZ, and elucidate underlying mechanism. Our analysis of The Cancer Genome Atlas database revealed that the increased expression of CXCR4 is linked to poor survival of GBM patients. Additionally, TMZ treatment may trigger CXCR4/CXCL12 axis of GBM. We used two GBM cell lines, two primary GBM cells, and animal model to identify underlying mechanism and treatment efficacy of regorafenib combined with TMZ by cytotoxicity, apoptosis, reporter gene and invasion/migration assays, chemokine array, Western blotting, MRI, microarray, and immunohistochemistry. We observed that the chemokine CXCL-12 and its receptor CXCR4 regulate the resistance to TMZ, whereas the inhibition of CXCL-12/CXCR4 signaling sensitizes GBM cells to TMZ. The TMZ-induced CXCL-12/CXCR4 signaling, phosphor-extracellular signal-regulated kinases 1 and 2 (ERK1/2) and nuclear factor kappa light chain enhancer of activated B cells (NF-κB), and NF-κB-related proteins can effectively diminish when combining with regorafenib. Regorafenib significantly enhanced the TMZ-induced extrinsic/intrinsic apoptotic pathways, and facilitated the suppression of invasion and migration potential in GBM. Orthotopic tumor experiments demonstrated tumor size reduction and prolonged survival in combination group even with half-dose of TMZ. Our findings provide promising evidence that regorafenib may sensitize GBM to TMZ treatment through inhibition of the CXCL12/CXCR4/ERK/NF-κB signaling.
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Affiliation(s)
- I-Tsang Chiang
- Department of Radiation Oncology, Chang Bing Show Chwan Memorial Hospital, Changhua, 505, Taiwan
- Department of Radiation Oncology, Show Chwan Memorial Hospital, Changhua, 500, Taiwan
- Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, Taichung, 406, Taiwan
- Medical administrative center, Show Chwan Memorial Hospital, Changhua, 500, Taiwan
| | - Yu-Chang Liu
- Department of Radiation Oncology, Chang Bing Show Chwan Memorial Hospital, Changhua, 505, Taiwan
- Department of Radiation Oncology, Show Chwan Memorial Hospital, Changhua, 500, Taiwan
- Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, Taichung, 406, Taiwan
| | - Hua-Shan Liu
- School of Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, 110, Taiwan
- International Ph.D. Program in Biomedical Engineering & Graduate Institute of Biomedical Optomechatronics, College of Biomedical Engineering, Taipei Medical University, Taipei, 110, Taiwan
| | - Ahmed Atef Ahmed Ali
- TMU Neuroscience Research Center - NeuroImage, College of Medicine, Taipei Medical University, Taipei, 110, Taiwan
| | - Szu-Yi Chou
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 110, Taiwan
- Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University and National Health Research Institute, Taipei, 110, Taiwan
| | - Tsung-I Hsu
- Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University and National Health Research Institute, Taipei, 110, Taiwan
- Ph.D. Program in Medical Neuroscience, College of Medical Science and Technology, Taipei Medical University and National Health Research Institute, Taipei, 110, Taiwan
| | - Fei-Ting Hsu
- Department of Biological Science and Technology, China Medical University, Taichung, 404, Taiwan.
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Zhong L, Yang P, Zhang C, Wang Z, Jiang T, Chen B, Shan X, Qiu X. Long-term adjuvant administration of temozolomide impacts serum ions concentration in high-grade glioma. Chin Neurosurg J 2022; 8:6. [PMID: 35216639 PMCID: PMC8876447 DOI: 10.1186/s41016-022-00271-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 01/27/2022] [Indexed: 11/10/2022] Open
Abstract
Background Adjuvant temozolomide (TMZ) chemotherapy with standard regimen remarkably improves survival in patients with high-grade glioma (HGG). However, the influence of long-term TMZ chemotherapy on serum ions concentration is unclear. Methods One hundred and thirty-eight patients with HGG were included. Their blood samples were collected for blood biochemistry and routine test. The alteration in serum ions concentration, total protein, albumin, globin, and blood cells counts were used to identify the impact of long-term TMZ chemotherapy. Results Through the comparation of quantitative value of diverse parameters among different chemotherapy cycles, we identified that serum potassium concentration had a downward trend after TMZ administration (1st vs. 6th, p < 0.001; 1st vs. 12th, p < 0.001). Additionally, the correlation analysis showed that platelets was negatively correlated with chemotherapy cycles (r = − 0.649, p = 0.023). The hematological adverse events mainly centered on grade 1 to 2. Conclusion Long-term administration of TMZ may lead to serum ions disturbance. Besides the myelosuppression, we should pay attention to the alteration in serum ions concentration, and give patients proper symptomatic treatment when necessary. Supplementary Information The online version contains supplementary material available at 10.1186/s41016-022-00271-7.
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Affiliation(s)
- Liyun Zhong
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Pei Yang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Genome Atlas Network (CGGA) and Asian Glioma Genome Atlas Network (AGGA), Beijing, China
| | - Chuanbao Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Genome Atlas Network (CGGA) and Asian Glioma Genome Atlas Network (AGGA), Beijing, China
| | - Zheng Wang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Genome Atlas Network (CGGA) and Asian Glioma Genome Atlas Network (AGGA), Beijing, China
| | - Tao Jiang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,Chinese Glioma Genome Atlas Network (CGGA) and Asian Glioma Genome Atlas Network (AGGA), Beijing, China.,Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, China.,China National Clinical Research Center for Neurological Diseases, 119 South 4th Ring Road West, Beijing, 100070, China
| | - Baoshi Chen
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xia Shan
- Department of Molecular Neuropathology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China. .,Chinese Glioma Genome Atlas Network (CGGA) and Asian Glioma Genome Atlas Network (AGGA), Beijing, China. .,Department of Radiotherapy, Beijing Tiantan Hospital, Capital Medical University, 119 South 4th Ring Road West, Beijing, 100070, China.
| | - Xiaoguang Qiu
- Department of Radiotherapy, Beijing Tiantan Hospital, Capital Medical University, 119 South 4th Ring Road West, Beijing, 100070, China.
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Kirman DC, Renganathan B, Chui WK, Chen MW, Kaya NA, Ge R. Cell surface nucleolin is a novel ADAMTS5 receptor mediating endothelial cell apoptosis. Cell Death Dis 2022; 13:172. [PMID: 35197459 PMCID: PMC8866485 DOI: 10.1038/s41419-022-04618-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: 04/09/2021] [Revised: 12/17/2021] [Accepted: 01/19/2022] [Indexed: 12/12/2022]
Abstract
A Disintegrin and Metalloproteinase with ThromboSpondin motif (ADAMTS) 5 functions as an anti-angiogenic and anti-cancer protein independent of its metalloproteinase activity. Both full-length ADAMTS5 and TS5-p45, the autocatalytically cleaved C-terminal 45 kDa truncate of ADAMTS5, inhibits angiogenesis, and induces endothelial cell (EC) apoptosis. However, how ADAMTS5 triggers EC apoptosis remains unclear. This work shows that caspase-8 (Cas-8) and caspase-9 (Cas-9) are involved in TS5-p45-induced EC apoptosis. We identify cell surface nucleolin (NCL) as a novel high-affinity receptor for TS5-p45 in ECs, mediating TS5-p45's cell surface binding and pro-apoptotic function. We show that the central RNA-binding domain (RBD) of NCL is essential and sufficient for its binding to TS5-p45. Upon interacting with EC surface NCL, TS5-p45 is internalized through clathrin- and caveolin-dependent endocytosis and trafficked to the nucleus via late endosomes (LEs). We demonstrate that the nuclear trafficking of TS5-p45 is important for its pro-apoptotic activity as disruption of LE membrane integrity with an endosomolytic peptide suppressed both nuclear trafficking and pro-apoptotic activity of TS5-p45. Through cell surface biotinylation, we revealed that cell surface NCL shuttles extracellular TS5-p45 to the nucleus to mediate apoptosis. Furthermore, blocking the importin α1/ß1 receptor hindered the nuclear trafficking of TS5-p45, suggesting the involvement of the nuclear importing machinery for this nuclear translocation. RNA-seq identified many apoptosis-related genes that are differentially expressed at least two-fold in TS5-p45-treated ECs, with 10 of them qRT-PCR-validated and at least 5 of these genes potentially contributing to TS5-p45-NCL-induced apoptosis. Altogether, our work identifies NCL as a novel cell surface receptor for ADAMTS5 and demonstrates the critical role of NCL-mediated internalization and nuclear trafficking for ADAMTS5-induced EC apoptosis. These findings reveal novel mechanistic insights of the secreted metalloproteinase ADAMTS5 in angiogenesis inhibition.
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Affiliation(s)
- Dogan Can Kirman
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore
| | - Bhuvanasundar Renganathan
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore
| | - Wai Kit Chui
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore
| | - Ming Wei Chen
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Neslihan Arife Kaya
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
- Genome Institute of Singapore, Agency for Science, Technology and Research, Singapore, 138672, Singapore
| | - Ruowen Ge
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore.
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Damanskienė E, Balnytė I, Valančiūtė A, Alonso MM, Preikšaitis A, Stakišaitis D. The Different Temozolomide Effects on Tumorigenesis Mechanisms of Pediatric Glioblastoma PBT24 and SF8628 Cell Tumor in CAM Model and on Cells In Vitro. Int J Mol Sci 2022; 23:ijms23042001. [PMID: 35216113 PMCID: PMC8877228 DOI: 10.3390/ijms23042001] [Citation(s) in RCA: 2] [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: 01/03/2022] [Revised: 02/04/2022] [Accepted: 02/06/2022] [Indexed: 02/05/2023] Open
Abstract
It is necessary to elucidate the individual effects of temozolomide (TMZ) on carcinogenesis and tumor resistance to chemotherapy mechanisms. The study aimed to investigate the TMZ 50 and 100 μM dose effect difference between PBT24 and SF8628 cell line high-grade pediatric glioblastoma (phGBM) xenografts in a chicken chorioallantoic membrane (CAM) model, on PCNA and EZH2 immunohistochemical expression in the tumor and on the expression of NKCC1, KCC2, E- and N-cadherin genes in TMZ-treated and control cell groups in vitro. TMZ at a 100 μg dose reduced the incidence of PBT24 xenograft invasion into the CAM, CAM thickening and the number of blood vessels in the CAM (p < 0.05), but did not affect the SF8628 tumor in the CAM model. The TMZ impact on PBT24 and SF8628 tumor PCNA expression was similarly significantly effective but did not alter EZH2 expression in the studied tumors. The TMZ at 50 μM caused significantly increased RNA expression of the NKCC1 gene in both studied cell types compared with controls (p < 0.05). The expression of the KCC2 gene was increased in PBT24 TMZ-treated cells (p < 0.05), and no TMZ effect was found in SF8628-treated cells. The study supports the suggestion that individual sensitivity to TMZ should be assessed when starting treatment.
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Affiliation(s)
- Eligija Damanskienė
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (I.B.); (A.V.)
- Correspondence: (E.D.); (D.S.)
| | - Ingrida Balnytė
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (I.B.); (A.V.)
| | - Angelija Valančiūtė
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (I.B.); (A.V.)
| | - Marta Maria Alonso
- Department of Pediatrics, Clínica Universidad de Navarra, University of Navarra, 31008 Pamplona, Spain;
| | - Aidanas Preikšaitis
- Centre of Neurosurgery, Clinic of Neurology and Neurosurgery, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania;
| | - Donatas Stakišaitis
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (I.B.); (A.V.)
- Laboratory of Molecular Oncology, National Cancer Institute, 08660 Vilnius, Lithuania
- Correspondence: (E.D.); (D.S.)
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Tesileanu CMS, Gorlia T, Golfinopoulos V, French PJ, van den Bent MJ. MGMT promoter methylation determined by the MGMT-STP27 algorithm is not predictive for outcome to temozolomide in IDH-mutant anaplastic astrocytomas. Neuro Oncol 2022; 24:665-667. [PMID: 35099533 PMCID: PMC8972205 DOI: 10.1093/neuonc/noac014] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- C Mircea S Tesileanu
- Neurology Department, Brain Tumor Center, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | | | | | - Pim J French
- Neurology Department, Brain Tumor Center, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - Martin J van den Bent
- Corresponding Author: Martin J. van den Bent, MD, Neuro-Oncology Unit, Brain Tumor Center at Erasmus MC Cancer Institute, ‘s-Gravendijkwal 230, 3015 CE Rotterdam, the Netherlands ()
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35
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Mitra S, Anand U, Jha NK, Shekhawat MS, Saha SC, Nongdam P, Rengasamy KRR, Proćków J, Dey A. Anticancer Applications and Pharmacological Properties of Piperidine and Piperine: A Comprehensive Review on Molecular Mechanisms and Therapeutic Perspectives. Front Pharmacol 2022; 12:772418. [PMID: 35069196 PMCID: PMC8776707 DOI: 10.3389/fphar.2021.772418] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/18/2021] [Indexed: 12/26/2022] Open
Abstract
Piperine and piperidine are the two major alkaloids extracted from black pepper (Piper nigrum); piperidine is a heterocyclic moiety that has the molecular formula (CH2)5NH. Over the years, many therapeutic properties including anticancer potential of these two compounds have been observed. Piperine has therapeutic potential against cancers such as breast cancer, ovarian cancer, gastric cancer, gliomal cancer, lung cancer, oral squamous, chronic pancreatitis, prostate cancer, rectal cancer, cervical cancer, and leukemia. Whereas, piperidine acts as a potential clinical agent against cancers, such as breast cancer, prostate cancer, colon cancer, lung cancer, and ovarian cancer, when treated alone or in combination with some novel drugs. Several crucial signalling pathways essential for the establishment of cancers such as STAT-3, NF-κB, PI3k/Aκt, JNK/p38-MAPK, TGF-ß/SMAD, Smac/DIABLO, p-IκB etc., are regulated by these two phytochemicals. Both of these phytochemicals lead to inhibition of cell migration and help in cell cycle arrest to inhibit survivability of cancer cells. The current review highlights the pharmaceutical relevance of both piperine and piperidine against different types of cancers.
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Affiliation(s)
- Sicon Mitra
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, India
| | - Uttpal Anand
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, India
| | - Mahipal S Shekhawat
- Department of Plant Biology and Biotechnology, Kanchi Mamunivar Government Institute for Postgraduate Studies and Research, Lawspet, India
| | - Suchismita Chatterjee Saha
- Department of Zoology, Nabadwip Vidyasagar College (Affiliated to the University of Kalyani), Nabadwip, India
| | | | - Kannan R R Rengasamy
- Green Biotechnologies Research Centre of Excellence, University of Limpopo, Sovenga, South Africa
| | - Jarosław Proćków
- Department of Plant Biology, Institute of Environmental Biology, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - Abhijit Dey
- Ethnopharmacology and Natural Product Research Laboratory, Department of Life Sciences, Presidency University, Kolkata, India
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36
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Dai W, Wu A, Li Y, Yu G, Yan X. XPA Enhances Temozolomide Resistance of Glioblastoma Cells by Promoting Nucleotide Excision Repair. Cell Transplant 2022; 31:9636897221092778. [PMID: 35536165 PMCID: PMC9096195 DOI: 10.1177/09636897221092778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Glioblastoma is the most frequent, as well as aggressive kind of high-grade malignant glioma. Chemoresistance is posing a significant clinical barrier to the efficacy of temozolomide-based glioblastoma treatment. By suppressing xeroderma pigmentosum group A (XPA), a pivotal DNA damage recognition protein implicated in nucleotide excision repair (NER), we devised a novel method to enhance glioblastoma therapy and alleviate temozolomide resistance. On the basis of preliminary assessment, we found that XPA dramatically increased in glioblastoma compared with normal cells and contributed to temozolomide resistance. By constructing XPA stably knockdown cells, we illustrate that XPA protects glioma cells from temozolomide-triggered reproductive cell death, apoptosis, as well as DNA repair. Besides, XPA silencing remarkably enhances temozolomide efficacy in vivo. This study revealed a crucial function of XPA-dependent NER in the resistance of glioma cells to temozolomide.
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Affiliation(s)
- Weimin Dai
- Department of Neurosurgery, Quzhou Hospital affiliated of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, China
| | - An Wu
- Department of Neurosurgery, Quzhou Hospital affiliated of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, China
| | - Yunping Li
- Department of Neurosurgery, Quzhou Hospital affiliated of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, China
| | - Guofeng Yu
- Department of Neurosurgery, Quzhou Hospital affiliated of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, China
| | - Xinjiang Yan
- Department of Neurosurgery, Quzhou Hospital affiliated of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, China
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37
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Xue YY, Lu YY, Sun GQ, Fang F, Ji YQ, Tang HF, Qiu PC, Cheng G. CN-3 increases TMZ sensitivity and induces ROS-dependent apoptosis and autophagy in TMZ-resistance glioblastoma. J Biochem Mol Toxicol 2021; 36:e22973. [PMID: 34967073 DOI: 10.1002/jbt.22973] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 11/18/2021] [Accepted: 12/09/2021] [Indexed: 12/28/2022]
Abstract
Many glioma patients develop resistance to temozolomide (TMZ) treatment, resulting in reduced efficacy and survival rates. TMZ-resistant cell lines SHG44R and U87R, which highly express O6 -methylguanine DNA methyltransferase (MGMT) and P-gp, were established. CN-3, a new asterosaponin, showed cytotoxic effects on TMZ-resistant cells in a dose- and time-dependent manner via reactive oxygen species (ROS)-mediated apoptosis and autophagy. Transmission electron microscopy and monodansylcadaverine (MDC) staining showed turgidity of the mitochondria and autophagosomes in CN-3-treated SHG44R and U87R cells. The autophagy inhibitor 3-methyladenine was used to confirm the important role of autophagy in CN-3 cytotoxicity in TMZ-resistant cells. The ROS scavenger N-acetyl- l-cysteine (NAC) attenuated the levels of ROS induced by CN-3 and, therefore, rescued the CN-3 cytotoxic effect on the viability of SHG44R and U87R cells by Cell Counting Kit-8 assays and JuLI-Stage videos. MDC staining also confirmed that NAC rescued an autophagosome increase in CN-3-treated SHG44R and U87R cells. Western blotting revealed that CN-3 increased Bax, cleaved-caspase 3, cytochrome C, PARP-1, LC3-Ⅱ, and Beclin1, and decreased P-AKT, Bcl-2, and p62. Further rescue experiments revealed that CN-3 induced apoptosis and autophagy through ROS-mediated cytochrome C, cleaved-caspase 3, Bcl-2, P-AKT, PARP-1, and LC3-Ⅱ. In addition, CN-3 promoted SHG44R and U87R cells sensitive to TMZ by reducing the expression of P-gp, MGMT, and nuclear factor kappa B p65, and it had a synergistic cytotoxic effect with TMZ. Moreover, CN-3 disrupted the natural cycle arrest and inhibited the migration of SHG44R and U87R cells by promoting cyclin E1 and D1, and by decreasing P21, P27, N-cadherin, β-catenin, transforming growth factor beta 1, and Smad2.
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Affiliation(s)
- Yu-Ye Xue
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Yun-Yang Lu
- Department of Chinese Materia Medica and Natural Medicines, Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, School of Pharmacy, Air Force Medical University, Xi'an, China
| | - Guang-Qiang Sun
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Fei Fang
- Central Laboratory of Xi'an No. 1 Hospital, Xi'an, China
| | - Yu-Qiang Ji
- Central Laboratory of Xi'an No. 1 Hospital, Xi'an, China
| | - Hai-Feng Tang
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang, China.,Department of Chinese Materia Medica and Natural Medicines, Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, School of Pharmacy, Air Force Medical University, Xi'an, China
| | - Peng-Cheng Qiu
- Department of Chinese Materia Medica and Natural Medicines, Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, School of Pharmacy, Air Force Medical University, Xi'an, China
| | - Guang Cheng
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Air Force Medical University, Xi'an, China
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38
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Accumulation of Temozolomide-Induced Apoptosis, Senescence and DNA Damage by Metronomic Dose Schedule: A Proof-of-Principle Study with Glioblastoma Cells. Cancers (Basel) 2021; 13:cancers13246287. [PMID: 34944906 PMCID: PMC8699541 DOI: 10.3390/cancers13246287] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 01/15/2023] Open
Abstract
Simple Summary Severe toxic side effects do not allow unlimited dose escalation of anticancer drugs, and the doses used in cancer therapy are therefore often rather low regarding the required target concentration. For temozolomide (TMZ), which is used in glioblastoma therapy, single high dose protocols are used in nearly all experimental studies, while the drug is administered repeatedly on patients, with a daily (metronomic) low dose schedule. Here, we show that the therapeutically relevant glioblastoma cell death and senescence responses do accumulate if a high dose of TMZ is split up in small low doses. The data support the metronomic dose schedule and suggest that even low doses are effective in glioblastoma therapy. The predominance and accumulation of TMZ-refractory senescent survivors may provide an explanation for the overall low curative response. Abstract Temozolomide (TMZ), a first-line drug in glioma therapy, targets the tumor DNA at various sites. One of the DNA alkylation products is O6-methylguanine (O6MeG), which is, in the low dose range of TMZ, responsible for nearly all genotoxic and cytotoxic effects relevant for cancer therapy. There is, however, a dispute regarding whether the TMZ concentration in the tumor tissue in patients is sufficient to elicit a significant cytotoxic or cytostatic response. Although treatment with TMZ occurs repeatedly with daily doses (metronomic dose schedule) and in view of the short half-life of the drug it is unclear whether doses are accumulating. Here, we addressed the question whether repeated low doses elicit similar effects in glioblastoma cells than a high cumulative dose. We show that repeated treatments with a low dose of TMZ (5 × 5 µM) caused an accumulation of cytotoxicity through apoptosis, cytostasis through cellular senescence, and DNA double-strand breaks, which was similar to the responses induced by a single cumulative dose of 25 µM TMZ. This finding, together with the previously reported linear dose–response curves, support the notion that TMZ is able to trigger a significant cytotoxic and cytostatic effect in vivo if the low-dose metronomic schedule is applied.
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Zhai K, Mazurakova A, Koklesova L, Kubatka P, Büsselberg D. Flavonoids Synergistically Enhance the Anti-Glioblastoma Effects of Chemotherapeutic Drugs. Biomolecules 2021; 11:biom11121841. [PMID: 34944485 PMCID: PMC8699565 DOI: 10.3390/biom11121841] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 02/07/2023] Open
Abstract
Flavonoids are polyphenolic plant secondary metabolites with pleiotropic biological properties, including anti-cancer activities. These natural compounds have potential utility in glioblastoma (GBM), a malignant central nervous system tumor derived from astrocytes. Conventional GBM treatment modalities such as chemotherapy, radiation therapy, and surgical tumor resection are beneficial but limited by extensive tumor invasion and drug/radiation resistance. Therefore, dietary flavonoids—with demonstrated anti-GBM properties in preclinical research—are potential alternative therapies. This review explores the synergistic enhancement of the anti-GBM effects of conventional chemotherapeutic drugs by flavonoids. Primary studies published between 2011 and 2021 on flavonoid–chemotherapeutic synergy in GBM were obtained from PubMed. These studies demonstrate that flavonoids such as chrysin, epigallocatechin-3-gallate (EGCG), formononetin, hispidulin, icariin, quercetin, rutin, and silibinin synergistically enhance the effects of canonical chemotherapeutics. These beneficial effects are mediated by the modulation of intracellular signaling mechanisms related to apoptosis, proliferation, autophagy, motility, and chemoresistance. In this light, flavonoids hold promise in improving current therapeutic strategies and ultimately overcoming GBM drug resistance. However, despite positive preclinical results, further investigations are necessary before the commencement of clinical trials. Key considerations include the bioavailability, blood–brain barrier (BBB) permeability, and safety of flavonoids; optimal dosages of flavonoids and chemotherapeutics; drug delivery platforms; and the potential for adverse interactions.
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Affiliation(s)
- Kevin Zhai
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, Doha P.O. Box 24144, Qatar;
| | - Alena Mazurakova
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovakia; (A.M.); (L.K.)
| | - Lenka Koklesova
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovakia; (A.M.); (L.K.)
| | - Peter Kubatka
- Department of Medical Biology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovakia;
| | - Dietrich Büsselberg
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, Doha P.O. Box 24144, Qatar;
- Correspondence:
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An overview of current therapeutic strategies for glioblastoma and the role of CD73 as an alternative curative approach. Clin Transl Oncol 2021; 24:742-756. [PMID: 34792724 DOI: 10.1007/s12094-021-02732-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/01/2021] [Indexed: 10/19/2022]
Abstract
Glioblastoma multiforme (GBM) is a complicated and heterogeneous brain tumor with short-term survival outcomes. Commercial therapies are not practical due to cell infiltration capacity, high proliferative rate, and blood-brain barrier. In this context, recognition of the molecular mechanism of tumor progression might help the development of new cancer therapeutics. Recently, more evidence has supported CD73 and downstream adenosine A2A/A2B receptor signaling playing a crucial role in glioblastoma pathogenesis; therefore, targeting CD73 in murine tumor models can reduce tumor development. CD73 is an ecto-enzyme inducing tumor metastasis, angiogenesis, and immune escape via the production of extracellular adenosine in the tumor microenvironment. In this review, we provided information about clinical characteristics as well as the therapeutic management of glioblastoma. Then, we focused on newly available experimental evidence distinguishing between the essential role of CD73 on this tumor growth and a new method for the treatment of GBM patients.
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41
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Kim NY, Hwang SH, Yang Y, Kim Y. Temozolomide abrogates the aggressiveness of urothelial carcinoma cells by enhancing senescence and depleting the side population. Oncol Lett 2021; 22:845. [PMID: 34733363 PMCID: PMC8561215 DOI: 10.3892/ol.2021.13106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 09/30/2021] [Indexed: 11/17/2022] Open
Abstract
Patients with advanced urothelial carcinoma (UC) generally have poor prognoses due to therapeutic resistance. Furthermore, there are limited treatment options for advanced UC. Therefore, novel or effective chemotherapeutic agents are needed to improve patient survival. The present study was conducted to investigate the effect of temozolomide (TMZ) on UC cells so as to identify a potential method to overcome therapeutic resistance. TMZ is an alkylating agent with a target different from that of other anticancer drugs used to treat UC, such as cisplatin. TMZ enhanced the autophagic response and senescence, which was mediated via the p53 and p21 pathways. Inhibiting the autophagic response using chloroquine synergistically augmented the cytotoxic effect of TMZ on UC cells. TMZ significantly reduced the invasiveness of UC cells. Notably, the abundance of side population fraction was also significantly reduced following TMZ treatment. Considering that side population fraction is known to confer therapeutic resistance, it is noteworthy that the TMZ treatment markedly decreased side population fraction. Altogether, TMZ may have the potential to be applied as a part of an alternative treatment strategy to reduce the malignancy of UC cells.
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Affiliation(s)
- Na-Yon Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung-Hyun Hwang
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeseul Yang
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.,BK21 PLUS Program for Creative Veterinary Science Research, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Yongbaek Kim
- Laboratory of Veterinary Clinical Pathology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.,Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
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42
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Genistein and Temozolomide-Loaded Polymeric Nanoparticles: A Synergistic Approach For Improved Anti-Tumor Efficacy Against Glioblastoma. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.07.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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43
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Tsai HC, Wei KC, Chen PY, Huang CY, Chen KT, Lin YJ, Cheng HW, Chen YR, Wang HT. Valproic Acid Enhanced Temozolomide-Induced Anticancer Activity in Human Glioma Through the p53-PUMA Apoptosis Pathway. Front Oncol 2021; 11:722754. [PMID: 34660288 PMCID: PMC8518553 DOI: 10.3389/fonc.2021.722754] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 09/08/2021] [Indexed: 01/22/2023] Open
Abstract
Glioblastoma (GBM), the most lethal type of brain tumor in adults, has considerable cellular heterogeneity. The standard adjuvant chemotherapeutic agent for GBM, temozolomide (TMZ), has a modest response rate due to the development of drug resistance. Multiple studies have shown that valproic acid (VPA) can enhance GBM tumor control and prolong survival when given in conjunction with TMZ. However, the beneficial effect is variable. In this study, we analyzed the impact of VPA on GBM patient survival and its possible correlation with TMZ treatment and p53 gene mutation. In addition, the molecular mechanisms of TMZ in combination with VPA were examined using both p53 wild-type and p53 mutant human GBM cell lines. Our analysis of clinical data indicates that the survival benefit of a combined TMZ and VPA treatment in GBM patients is dependent on their p53 gene status. In cellular experiments, our results show that VPA enhanced the antineoplastic effect of TMZ by enhancing p53 activation and promoting the expression of its downstream pro-apoptotic protein, PUMA. Our study indicates that GBM patients with wild-type p53 may benefit from a combined TMZ+VPA treatment.
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Affiliation(s)
- Hong-Chieh Tsai
- Department of Neurosurgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Kuo-Chen Wei
- Department of Neurosurgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Neurosurgery, New Taipei Municipal TuCheng Hospital, Chang Gung Memorial Hospital, New Taipei City, Taiwan.,Neuroscience Research Center, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,School of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Pin-Yuan Chen
- School of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Neurosurgery, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Chiung-Yin Huang
- Department of Neurosurgery, New Taipei Municipal TuCheng Hospital, Chang Gung Memorial Hospital, New Taipei City, Taiwan.,Neuroscience Research Center, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ko-Ting Chen
- Department of Neurosurgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Neuroscience Research Center, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ya-Jui Lin
- Department of Neurosurgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,School of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Hsiao-Wei Cheng
- Department of Neurosurgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Institute of Pharmacology, College of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yi-Rou Chen
- Department of Neurosurgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Hsiang-Tsui Wang
- Institute of Pharmacology, College of Medicine, National Yang-Ming University, Taipei, Taiwan.,Institute of Pharmacology, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Institute of Food Safety and Health Risk Assessment, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Doctor Degree Program in Toxicology, Kaohsiung Medical University, Kaohsiung, Taiwan
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44
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Stratenwerth B, Geisen SM, He Y, Beltzig L, Sturla SJ, Kaina B. Molecular Dosimetry of Temozolomide: Quantification of Critical Lesions, Correlation to Cell Death Responses, and Threshold Doses. Mol Cancer Ther 2021; 20:1789-1799. [PMID: 34253592 PMCID: PMC9398175 DOI: 10.1158/1535-7163.mct-21-0228] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 05/01/2021] [Accepted: 06/25/2021] [Indexed: 01/07/2023]
Abstract
Temozolomide (TMZ) is a DNA-methylating agent used in cancer chemotherapy, notably for glioblastoma multiforme (GBM), where it is applied as a front-line drug. One of the DNA alkylation products of TMZ is the minor lesion O6 -methylguanine (O6 MeG), which is responsible for nearly all genotoxic, cytotoxic, and cytostatic effects induced in the low-dose range relevant for cancer therapy. Here, we addressed the question of how many O6 MeG adducts are required to elicit cytotoxic responses. Adduct quantification revealed that O6 MeG increases linearly with dose. The same was observed for DNA double-strand breaks (DSB) and p53ser15. Regarding apoptosis, hockeystick modeling indicated a possible threshold for A172 cells at 2.5 μmol/L TMZ, whereas for LN229 cells no threshold was detected. Cellular senescence, which is the main cellular response, also increased linearly, without a threshold. Using a dose of 20 μmol/L, which is achievable in a therapeutic setting, we determined that 14,000 adducts give rise to 32 DSBs (γH2AX foci) in A172 cells. This leads to 12% cell death and 35% of cells entering senescence. In LN229 cells, 20 μmol/L TMZ induced 20,600 O6 MeG adducts, 66 DSBs (γH2AX foci), 24% apoptosis, and 52% senescence. The linear dose response and the genotoxic and cytotoxic effects observed at therapeutically relevant dose levels make it very likely that the TMZ target concentration triggers a significant cytotoxic and cytostatic effect in vivo Despite a linear increase in the O6 MeG adduct level, DSBs, and p53 activation, the low curative effect of TMZ results presumably from the low rate of apoptosis compared to senescence.
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Affiliation(s)
- Björn Stratenwerth
- Institute of Toxicology, University Medical Center, University Mainz, Mainz, Germany
| | - Susanne M. Geisen
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Yang He
- Institute of Toxicology, University Medical Center, University Mainz, Mainz, Germany
| | - Lea Beltzig
- Institute of Toxicology, University Medical Center, University Mainz, Mainz, Germany
| | - Shana J. Sturla
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Bernd Kaina
- Institute of Toxicology, University Medical Center, University Mainz, Mainz, Germany.,Corresponding Author: Bernd Kaina, Institute of Toxicology, Medical Center of the University Mainz, Obere Zahlbacher Str. 67, Mainz D-55131, Germany. E-mail:
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45
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Lozinski M, Bowden NA, Graves MC, Fay M, Tooney PA. DNA damage repair in glioblastoma: current perspectives on its role in tumour progression, treatment resistance and PIKKing potential therapeutic targets. Cell Oncol (Dordr) 2021; 44:961-981. [PMID: 34057732 DOI: 10.1007/s13402-021-00613-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 05/17/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND The aggressive, invasive and treatment resistant nature of glioblastoma makes it one of the most lethal cancers in humans. Total surgical resection is difficult, and a combination of radiation and chemotherapy is used to treat the remaining invasive cells beyond the tumour border by inducing DNA damage and activating cell death pathways in glioblastoma cells. Unfortunately, recurrence is common and a major hurdle in treatment, often met with a more aggressive and treatment resistant tumour. A mechanism of resistance is the response of DNA repair pathways upon treatment-induced DNA damage, which enact cell-cycle arrest and repair of DNA damage that would otherwise cause cell death in tumour cells. CONCLUSIONS In this review, we discuss the significance of DNA repair mechanisms in tumour formation, aggression and treatment resistance. We identify an underlying trend in the literature, wherein alterations in DNA repair pathways facilitate glioma progression, while established high-grade gliomas benefit from constitutively active DNA repair pathways in the repair of treatment-induced DNA damage. We also consider the clinical feasibility of inhibiting DNA repair in glioblastoma and current strategies of using DNA repair inhibitors as agents in combination with chemotherapy, radiation or immunotherapy. Finally, the importance of blood-brain barrier penetrance when designing novel small-molecule inhibitors is discussed.
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Affiliation(s)
- Mathew Lozinski
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, NSW, Australia
- Centre for Drug Repurposing and Medicines Research, University of Newcastle, Newcastle, NSW, Australia
- Hunter Medical Research Institute, Newcastle, NSW, Australia
| | - Nikola A Bowden
- Centre for Drug Repurposing and Medicines Research, University of Newcastle, Newcastle, NSW, Australia
- Hunter Medical Research Institute, Newcastle, NSW, Australia
- School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, Newcastle, NSW, Australia
| | - Moira C Graves
- Centre for Drug Repurposing and Medicines Research, University of Newcastle, Newcastle, NSW, Australia
- Hunter Medical Research Institute, Newcastle, NSW, Australia
- School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, Newcastle, NSW, Australia
| | - Michael Fay
- Centre for Drug Repurposing and Medicines Research, University of Newcastle, Newcastle, NSW, Australia
- Hunter Medical Research Institute, Newcastle, NSW, Australia
- Genesis Cancer Care, Gateshead, New South Wales, Australia
| | - Paul A Tooney
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, NSW, Australia.
- Centre for Drug Repurposing and Medicines Research, University of Newcastle, Newcastle, NSW, Australia.
- Hunter Medical Research Institute, Newcastle, NSW, Australia.
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46
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Han C, Wang S, Wang H, Zhang J. Exosomal circ-HIPK3 Facilitates Tumor Progression and Temozolomide Resistance by Regulating miR-421/ZIC5 Axis in Glioma. Cancer Biother Radiopharm 2021; 36:537-548. [PMID: 32644821 DOI: 10.1089/cbr.2019.3492] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Chengchen Han
- Department of Neurosurgery, The Sixth Medical Center of PLA General Hospital, Beijing, China
| | - Shuwei Wang
- Department of Neurosurgery, The Sixth Medical Center of PLA General Hospital, Beijing, China
| | - Hongwei Wang
- Department of Neurosurgery, The Sixth Medical Center of PLA General Hospital, Beijing, China
| | - Jianning Zhang
- Department of Neurosurgery, The Sixth Medical Center of PLA General Hospital, Beijing, China
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47
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Almeida L, Estrada-Rodriguez G, Oliver L, Peurichard D, Poulain A, Vallette F. Treatment-induced shrinking of tumour aggregates: a nonlinear volume-filling chemotactic approach. J Math Biol 2021; 83:29. [PMID: 34427771 DOI: 10.1007/s00285-021-01642-x] [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: 07/23/2020] [Revised: 03/24/2021] [Accepted: 07/18/2021] [Indexed: 11/24/2022]
Abstract
Motivated by experimental observations in 3D/organoid cultures derived from glioblastoma, we propose a novel mechano-transduction mechanism where the introduction of a chemotherapeutic treatment induces mechanical changes at the cell level. We analyse the influence of these individual mechanical changes on the properties of the aggregates obtained at the population level. We employ a nonlinear volume-filling chemotactic system of partial differential equations, where the elastic properties of the cells are taken into account through the so-called squeezing probability, which depends on the concentration of the treatment in the extracellular microenvironment. We explore two scenarios for the effect of the treatment: first, we suppose that the treatment acts only on the mechanical properties of the cells and, in the second one, we assume it also prevents cell proliferation. We perform a linear stability analysis which enables us to identify the ability of the system to create patterns and fully characterize their size. Moreover, we provide numerical simulations in 1D and 2D that illustrate the shrinking of the aggregates due to the presence of the treatment.
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Affiliation(s)
- Luis Almeida
- Laboratoire Jacques-Louis Lions, UMR7598, Sorbonne Université, CNRS, Inria, Université de Paris, 75005, Paris, France
| | - Gissell Estrada-Rodriguez
- Laboratoire Jacques-Louis Lions, UMR7598, Sorbonne Université, CNRS, Inria, Université de Paris, 75005, Paris, France.
| | - Lisa Oliver
- UMR 1232, Centre de Recherche en Cancérologie et Immunologie Nantes-Angers, Université de Nantes, Nantes, France
| | - Diane Peurichard
- Sorbonne Université, Inria, Université de Paris, CNRS, Laboratoire Jacques-Louis Lions, 75005, Paris, France
| | - Alexandre Poulain
- Laboratoire Jacques-Louis Lions, UMR7598, Sorbonne Université, CNRS, Inria, Université de Paris, 75005, Paris, France
| | - Francois Vallette
- UMR 1232, Centre de Recherche en Cancérologie et Immunologie Nantes-Angers, Université de Nantes, Nantes, France
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48
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Wagner PM, Prucca CG, Caputto BL, Guido ME. Adjusting the Molecular Clock: The Importance of Circadian Rhythms in the Development of Glioblastomas and Its Intervention as a Therapeutic Strategy. Int J Mol Sci 2021; 22:8289. [PMID: 34361055 PMCID: PMC8348990 DOI: 10.3390/ijms22158289] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/26/2021] [Accepted: 07/29/2021] [Indexed: 12/12/2022] Open
Abstract
Gliomas are solid tumors of the central nervous system (CNS) that originated from different glial cells. The World Health Organization (WHO) classifies these tumors into four groups (I-IV) with increasing malignancy. Glioblastoma (GBM) is the most common and aggressive type of brain tumor classified as grade IV. GBMs are resistant to conventional therapies with poor prognosis after diagnosis even when the Stupp protocol that combines surgery and radiochemotherapy is applied. Nowadays, few novel therapeutic strategies have been used to improve GBM treatment, looking for higher efficiency and lower side effects, but with relatively modest results. The circadian timing system temporally organizes the physiology and behavior of most organisms and daily regulates several cellular processes in organs, tissues, and even in individual cells, including tumor cells. The potentiality of the function of the circadian clock on cancer cells modulation as a new target for novel treatments with a chronobiological basis offers a different challenge that needs to be considered in further detail. The present review will discuss state of the art regarding GBM biology, the role of the circadian clock in tumor progression, and new chrono-chemotherapeutic strategies applied for GBM treatment.
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Affiliation(s)
- Paula M. Wagner
- CIQUIBIC-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina; (P.M.W.); (C.G.P.); (B.L.C.)
- Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina
| | - César G. Prucca
- CIQUIBIC-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina; (P.M.W.); (C.G.P.); (B.L.C.)
- Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina
| | - Beatriz L. Caputto
- CIQUIBIC-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina; (P.M.W.); (C.G.P.); (B.L.C.)
- Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina
| | - Mario E. Guido
- CIQUIBIC-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina; (P.M.W.); (C.G.P.); (B.L.C.)
- Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina
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49
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Adjusting the Molecular Clock: The Importance of Circadian Rhythms in the Development of Glioblastomas and Its Intervention as a Therapeutic Strategy. Int J Mol Sci 2021; 22:8289. [PMID: 34361055 PMCID: PMC8348990 DOI: 10.3390/ijms22158289;] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Gliomas are solid tumors of the central nervous system (CNS) that originated from different glial cells. The World Health Organization (WHO) classifies these tumors into four groups (I-IV) with increasing malignancy. Glioblastoma (GBM) is the most common and aggressive type of brain tumor classified as grade IV. GBMs are resistant to conventional therapies with poor prognosis after diagnosis even when the Stupp protocol that combines surgery and radiochemotherapy is applied. Nowadays, few novel therapeutic strategies have been used to improve GBM treatment, looking for higher efficiency and lower side effects, but with relatively modest results. The circadian timing system temporally organizes the physiology and behavior of most organisms and daily regulates several cellular processes in organs, tissues, and even in individual cells, including tumor cells. The potentiality of the function of the circadian clock on cancer cells modulation as a new target for novel treatments with a chronobiological basis offers a different challenge that needs to be considered in further detail. The present review will discuss state of the art regarding GBM biology, the role of the circadian clock in tumor progression, and new chrono-chemotherapeutic strategies applied for GBM treatment.
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50
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A Z, J SW, A M, E L, I W, W R, J JG. LY294002 and sorafenib as inhibitors of intracellular survival pathways in the elimination of human glioma cells by programmed cell death. Cell Tissue Res 2021; 386:17-28. [PMID: 34236519 PMCID: PMC8526469 DOI: 10.1007/s00441-021-03481-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 06/02/2021] [Indexed: 11/05/2022]
Abstract
Gliomas are aggressive brain tumors with very high resistance to chemotherapy throughout the overexpression of multiple intracellular survival pathways. Therefore, the aim of the present study was to investigate for the first time the anticancer activity of LY294002, phosphatidylinositol 3-kinase (PI3K) inhibitor and sorafenib, and rapidly accelerated fibrosarcoma kinase (Raf) inhibitor in the elimination of human glioma cells by programmed cell death. MOGGCCM (anaplastic astrocytoma, III) and T98G (glioblastoma multiforme, IV) cell lines incubated with LY294002 and/or sorafenib were used in the experiments. Simultaneous treatment with both drugs was more effective in the elimination of cancer cells on the way of apoptosis with no significant necrotic effect than single application. It was correlated with decreasing the mitochondrial membrane potential and activation of caspase 3 and 9. The expression of Raf and PI3K was also inhibited. Blocking of those kinases expression by specific siRNA revealed significant apoptosis induction, exceeding the level observed after LY294002 and sorafenib treatment in non-transfected lines but only in MOGGCCM cells. Our results indicated that combination of LY294002 and sorafenib was very efficient in apoptosis induction in glioma cells. Anaplastic astrocytoma cells turned out to be more sensitive for apoptosis induction than glioblastoma multiforme after blocking PI3K and Raf expression with siRNA.
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Affiliation(s)
- Zając A
- Department of Functional Anatomy and Cytobiology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Lublin, Poland.
| | - Sumorek-Wiadro J
- Department of Functional Anatomy and Cytobiology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Lublin, Poland
| | - Maciejczyk A
- Department of Functional Anatomy and Cytobiology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Lublin, Poland
| | - Langner E
- Department of Medical Biology, Institute of Agricultural Medicine, Lublin, Poland
| | - Wertel I
- 1st Department of Gynecology, University School of Medicine, Lublin, Poland
| | - Rzeski W
- Department of Functional Anatomy and Cytobiology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Lublin, Poland.,Department of Medical Biology, Institute of Agricultural Medicine, Lublin, Poland
| | - Jakubowicz-Gil J
- Department of Functional Anatomy and Cytobiology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Lublin, Poland
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