1
|
Stephan G, Haddock S, Wang S, Erdjument-Bromage H, Liu W, Ravn-Boess N, Frenster JD, Bready D, Cai J, Ronnen R, Sabio-Ortiz J, Fenyo D, Neubert TA, Placantonakis DG. Modulation of GPR133 (ADGRD1) signaling by its intracellular interaction partner extended synaptotagmin 1. Cell Rep 2024; 43:114229. [PMID: 38758649 PMCID: PMC11209873 DOI: 10.1016/j.celrep.2024.114229] [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: 02/16/2023] [Revised: 10/12/2023] [Accepted: 04/26/2024] [Indexed: 05/19/2024] Open
Abstract
GPR133 (ADGRD1) is an adhesion G-protein-coupled receptor that signals through Gαs/cyclic AMP (cAMP) and is required for the growth of glioblastoma (GBM), an aggressive brain malignancy. The regulation of GPR133 signaling is incompletely understood. Here, we use proximity biotinylation proteomics to identify ESYT1, a Ca2+-dependent mediator of endoplasmic reticulum-plasma membrane bridge formation, as an intracellular interactor of GPR133. ESYT1 knockdown or knockout increases GPR133 signaling, while its overexpression has the opposite effect, without altering GPR133 levels in the plasma membrane. The GPR133-ESYT1 interaction requires the Ca2+-sensing C2C domain of ESYT1. Thapsigargin-mediated increases in cytosolic Ca2+ relieve signaling-suppressive effects of ESYT1 by promoting ESYT1-GPR133 dissociation. ESYT1 knockdown or knockout in GBM slows tumor growth, suggesting tumorigenic functions of ESYT1. Our findings demonstrate a mechanism for the modulation of GPR133 signaling by increased cytosolic Ca2+, which reduces the signaling-suppressive interaction between GPR133 and ESYT1 to raise cAMP levels.
Collapse
Affiliation(s)
- Gabriele Stephan
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY, USA
| | - Sara Haddock
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY, USA
| | - Shuai Wang
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY, USA
| | - Hediye Erdjument-Bromage
- Department of Neuroscience and Physiology, NYU Grossman School of Medicine, New York, NY 10016, USA; Neuroscience Institute, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Wenke Liu
- Institute for Systems Genetics, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Niklas Ravn-Boess
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY, USA
| | - Joshua D Frenster
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY, USA; Department of Health and Experimental Sciences, Universitat Pompeu Fabra, 08003 Barcelona, Spain
| | - Devin Bready
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY, USA
| | - Julia Cai
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY, USA
| | - Rebecca Ronnen
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY, USA
| | | | - David Fenyo
- Institute for Systems Genetics, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Thomas A Neubert
- Department of Neuroscience and Physiology, NYU Grossman School of Medicine, New York, NY 10016, USA; Neuroscience Institute, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Dimitris G Placantonakis
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY, USA; Laura and Isaac Perlmutter Cancer Center, NYU Grossman School of Medicine, New York, NY 10016, USA; Kimmel Center for Stem Cell Biology, NYU Grossman School of Medicine, New York, NY 10016, USA; Brain and Spine Tumor Center, NYU Grossman School of Medicine, New York, NY 10016, USA; Neuroscience Institute, NYU Grossman School of Medicine, New York, NY 10016, USA.
| |
Collapse
|
2
|
Qi L, Baxter P, Kogiso M, Zhang H, Braun FK, Lindsay H, Zhao S, Xiao S, Abdallah AS, Suarez M, Huang Z, Teo WY, Yu L, Zhao X, Liu Z, Huang Y, Su JM, Man TK, Lau CC, Perlaky L, Du Y, Li XN. Direct Implantation of Patient Brain Tumor Cells into Matching Locations in Mouse Brains for Patient-Derived Orthotopic Xenograft Model Development. Cancers (Basel) 2024; 16:1716. [PMID: 38730671 PMCID: PMC11083000 DOI: 10.3390/cancers16091716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 04/11/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Background: Despite multimodality therapies, the prognosis of patients with malignant brain tumors remains extremely poor. One of the major obstacles that hinders development of effective therapies is the limited availability of clinically relevant and biologically accurate (CRBA) mouse models. Methods: We have developed a freehand surgical technique that allows for rapid and safe injection of fresh human brain tumor specimens directly into the matching locations (cerebrum, cerebellum, or brainstem) in the brains of SCID mice. Results: Using this technique, we successfully developed 188 PDOX models from 408 brain tumor patient samples (both high-and low-grade) with a success rate of 72.3% in high-grade glioma, 64.2% in medulloblastoma, 50% in ATRT, 33.8% in ependymoma, and 11.6% in low-grade gliomas. Detailed characterization confirmed their replication of the histopathological and genetic abnormalities of the original patient tumors. Conclusions: The protocol is easy to follow, without a sterotactic frame, in order to generate large cohorts of tumor-bearing mice to meet the needs of biological studies and preclinical drug testing.
Collapse
Affiliation(s)
- Lin Qi
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Sun Yat-sen University, Shenzhen 510080, China;
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
| | - Patricia Baxter
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Mari Kogiso
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Huiyuan Zhang
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Frank K. Braun
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Holly Lindsay
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Sibo Zhao
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Sophie Xiao
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
| | - Aalaa Sanad Abdallah
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
| | - Milagros Suarez
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
| | - Zilu Huang
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
| | - Wan Yee Teo
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- The Laboratory of Pediatric Brain Tumor Research Office, SingHealth Duke-NUS Academic Medical Center, Singapore 169856, Singapore
| | - Litian Yu
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Xiumei Zhao
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Zhigang Liu
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Yulun Huang
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jack M. Su
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
| | - Tsz-Kwong Man
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
| | - Ching C. Lau
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
| | - Laszlo Perlaky
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
| | - Yuchen Du
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL 60611, USA
| | - Xiao-Nan Li
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
- The Laboratory of Pediatric Brain Tumor Research Office, SingHealth Duke-NUS Academic Medical Center, Singapore 169856, Singapore
| |
Collapse
|
3
|
Ravn-Boess N, Roy N, Hattori T, Bready D, Donaldson H, Lawson C, Lapierre C, Korman A, Rodrick T, Liu E, Frenster JD, Stephan G, Wilcox J, Corrado AD, Cai J, Ronnen R, Wang S, Haddock S, Sabio Ortiz J, Mishkit O, Khodadadi-Jamayran A, Tsirigos A, Fenyö D, Zagzag D, Drube J, Hoffmann C, Perna F, Jones DR, Possemato R, Koide A, Koide S, Park CY, Placantonakis DG. The expression profile and tumorigenic mechanisms of CD97 (ADGRE5) in glioblastoma render it a targetable vulnerability. Cell Rep 2023; 42:113374. [PMID: 37938973 PMCID: PMC10841603 DOI: 10.1016/j.celrep.2023.113374] [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: 05/12/2023] [Revised: 09/08/2023] [Accepted: 10/19/2023] [Indexed: 11/10/2023] Open
Abstract
Glioblastoma (GBM) is the most common and aggressive primary brain malignancy. Adhesion G protein-coupled receptors (aGPCRs) have attracted interest for their potential as treatment targets. Here, we show that CD97 (ADGRE5) is the most promising aGPCR target in GBM, by virtue of its de novo expression compared to healthy brain tissue. CD97 knockdown or knockout significantly reduces the tumor initiation capacity of patient-derived GBM cultures (PDGCs) in vitro and in vivo. We find that CD97 promotes glycolytic metabolism via the mitogen-activated protein kinase (MAPK) pathway, which depends on phosphorylation of its C terminus and recruitment of β-arrestin. We also demonstrate that THY1/CD90 is a likely CD97 ligand in GBM. Lastly, we show that an anti-CD97 antibody-drug conjugate selectively kills tumor cells in vitro. Our studies identify CD97 as a regulator of tumor metabolism, elucidate mechanisms of receptor activation and signaling, and provide strong scientific rationale for developing biologics to target it therapeutically in GBM.
Collapse
Affiliation(s)
- Niklas Ravn-Boess
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Nainita Roy
- Department of Pathology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Takamitsu Hattori
- Laura and Isaac Perlmutter Cancer Center, NYU Grossman School of Medicine, New York, NY 10016, USA; Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Devin Bready
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Hayley Donaldson
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Christopher Lawson
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Cathryn Lapierre
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Aryeh Korman
- Metabolomics Laboratory, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Tori Rodrick
- Metabolomics Laboratory, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Enze Liu
- Department of Medicine, Division of Hematology/Oncology, Indiana University, Indianapolis, IN 46202, USA
| | - Joshua D Frenster
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Gabriele Stephan
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Jordan Wilcox
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Alexis D Corrado
- Laura and Isaac Perlmutter Cancer Center, NYU Grossman School of Medicine, New York, NY 10016, USA; Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Julia Cai
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Rebecca Ronnen
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Shuai Wang
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Sara Haddock
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Jonathan Sabio Ortiz
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Orin Mishkit
- Preclinical Imaging Laboratory, NYU Grossman School of Medicine, New York, NY 10016, USA
| | | | - Aris Tsirigos
- Applied Bioinformatics Laboratories, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - David Fenyö
- Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY 10016, USA; Institute for Systems Genetics, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - David Zagzag
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA; Department of Pathology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Julia Drube
- Institute for Molecular Cell Biology, Universitätsklinikum Jena, 07745 Jena, Germany
| | - Carsten Hoffmann
- Institute for Molecular Cell Biology, Universitätsklinikum Jena, 07745 Jena, Germany
| | | | - Drew R Jones
- Metabolomics Laboratory, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Richard Possemato
- Department of Pathology, NYU Grossman School of Medicine, New York, NY 10016, USA; Laura and Isaac Perlmutter Cancer Center, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Akiko Koide
- Laura and Isaac Perlmutter Cancer Center, NYU Grossman School of Medicine, New York, NY 10016, USA; Department of Medicine, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Shohei Koide
- Laura and Isaac Perlmutter Cancer Center, NYU Grossman School of Medicine, New York, NY 10016, USA; Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Christopher Y Park
- Department of Pathology, NYU Grossman School of Medicine, New York, NY 10016, USA; Laura and Isaac Perlmutter Cancer Center, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Dimitris G Placantonakis
- Department of Neurosurgery, NYU Grossman School of Medicine, New York, NY 10016, USA; Laura and Isaac Perlmutter Cancer Center, NYU Grossman School of Medicine, New York, NY 10016, USA; Kimmel Center for Stem Cell Biology, NYU Grossman School of Medicine, New York, NY 10016, USA; Brain and Spine Tumor Center, NYU Grossman School of Medicine, New York, NY 10016, USA; Neuroscience Institute, NYU Grossman School of Medicine, New York, NY 10016, USA.
| |
Collapse
|
4
|
da Silva FF, Lupinacci FCS, Elias BDS, Beserra AO, Sanematsu P, Roffe M, Kulikowski LD, Costa FD, Santos TG, Hajj GNM. Establishment and Comprehensive Molecular Characterization of an Immortalized Glioblastoma Cell Line from a Brazilian Patient. Int J Mol Sci 2023; 24:15861. [PMID: 37958846 PMCID: PMC10649167 DOI: 10.3390/ijms242115861] [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: 09/20/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
Glioblastoma (GBM) is the most common and aggressive primary brain tumor in adults, with few effective treatment strategies. The research on the development of new treatments is often constrained by the limitations of preclinical models, which fail to accurately replicate the disease's essential characteristics. Herein, we describe the obtention, molecular, and functional characterization of the GBM33 cell line. This cell line belongs to the GBM class according to the World Health Organization 2021 Classification of Central Nervous System Tumors, identified by methylation profiling. GBM33 expresses the astrocytic marker GFAP, as well as markers of neuronal origin commonly expressed in GBM cells, such as βIII-tubulin and neurofilament. Functional assays demonstrated an increased growth rate when compared to the U87 commercial cell line and a similar sensitivity to temozolamide. GBM33 cells retained response to serum starvation, with reduced growth and diminished activation of the Akt signaling pathway. Unlike LN-18 and LN-229 commercial cell lines, GBM33 is able to produce primary cilia upon serum starvation. In summary, the successful establishment and comprehensive characterization of this GBM cell line provide researchers with invaluable tools for studying GBM biology, identifying novel therapeutic targets, and evaluating the efficacy of potential treatments.
Collapse
Affiliation(s)
- Fernanda F. da Silva
- International Research Center/CIPE, A.C. Camargo Cancer Center, São Paulo 01508-010, Brazil; (F.F.d.S.); (B.D.S.E.); (T.G.S.)
- National Institute of Science and Technology in Oncogenomics (INCITO), São Paulo 01509-900, Brazil
| | - Fernanda C. S. Lupinacci
- International Research Center/CIPE, A.C. Camargo Cancer Center, São Paulo 01508-010, Brazil; (F.F.d.S.); (B.D.S.E.); (T.G.S.)
- National Institute of Science and Technology in Oncogenomics (INCITO), São Paulo 01509-900, Brazil
| | - Bruno D. S. Elias
- International Research Center/CIPE, A.C. Camargo Cancer Center, São Paulo 01508-010, Brazil; (F.F.d.S.); (B.D.S.E.); (T.G.S.)
- National Institute of Science and Technology in Oncogenomics (INCITO), São Paulo 01509-900, Brazil
| | - Adriano O. Beserra
- International Research Center/CIPE, A.C. Camargo Cancer Center, São Paulo 01508-010, Brazil; (F.F.d.S.); (B.D.S.E.); (T.G.S.)
- National Institute of Science and Technology in Oncogenomics (INCITO), São Paulo 01509-900, Brazil
| | - Paulo Sanematsu
- Neurosurgery Department, A.C. Camargo Cancer Center, São Paulo 01509-010, Brazil
| | - Martin Roffe
- Children’s Hospital of Eastern Ontario Research Institute, Ottawa, ON K1H 8L1, Canada
| | - Leslie D. Kulikowski
- Cytogenomics Laboratory, Hospital das Clínicas da Faculdade de Medicina, Universidade de São Paulo, São Paulo 05403-010, Brazil;
| | - Felipe D’almeida Costa
- Department of Anatomic Pathology, A.C. Camargo Cancer Center, São Paulo 01509-010, Brazil;
| | - Tiago G. Santos
- International Research Center/CIPE, A.C. Camargo Cancer Center, São Paulo 01508-010, Brazil; (F.F.d.S.); (B.D.S.E.); (T.G.S.)
- National Institute of Science and Technology in Oncogenomics (INCITO), São Paulo 01509-900, Brazil
| | - Glaucia N. M. Hajj
- International Research Center/CIPE, A.C. Camargo Cancer Center, São Paulo 01508-010, Brazil; (F.F.d.S.); (B.D.S.E.); (T.G.S.)
- National Institute of Science and Technology in Oncogenomics (INCITO), São Paulo 01509-900, Brazil
| |
Collapse
|
5
|
Ai X, Ye Z, Xiao C, Zhong J, Lancman JJ, Chen X, Pan X, Yang Y, Zhou L, Wang X, Shi H, Zhang D, Yao Y, Cao D, Zhao C. Clinically relevant orthotopic xenograft models of patient-derived glioblastoma in zebrafish. Dis Model Mech 2022; 15:274520. [PMID: 35199829 PMCID: PMC9066514 DOI: 10.1242/dmm.049109] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 02/17/2022] [Indexed: 02/05/2023] Open
Abstract
An accurate prediction of the intracranial infiltration tendency and drug response of individual glioblastoma (GBM) cells is essential for personalized prognosis and treatment for this disease. However, the clinical utility of mouse patient-derived orthotopic xenograft (PDOX) models remains limited given current technical constraints, including difficulty in generating sufficient sample numbers from small tissue samples and a long latency period for results. To overcome these issues, we established zebrafish GBM xenografts of diverse origin, which can tolerate intracranial engraftment and maintain their unique histological features. Subsequent single-cell RNA-sequencing (scRNA-seq) analysis confirmed significant transcriptional identity to that of invading GBM microtumors observed in the proportionally larger brains of model animals and humans. Endothelial scRNA-seq confirmed that the zebrafish blood–brain barrier is homologous to the mammalian blood–brain barrier. Finally, we established a rapid and efficient zebrafish PDOX (zPDOX) model, which can predict long-term outcomes of GBM patients within 20 days. The zPDOX model provides a novel avenue for precision medicine of GBM, especially for the evaluation of intracranial infiltration tendency and prediction of individual drug sensitivity. Editor's choice: We established zebrafish glioblastoma (GBM) xenograft models that can be used to perform genetic and biological analysis of GBMs, identify blood–brain barrier-penetrating drugs and predict clinical sensitivity to temozolomide in GBM patients.
Collapse
Affiliation(s)
- Xiaolin Ai
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, Sichuan, China.,Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Zengpanpan Ye
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, Sichuan, China.,Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Chaoxin Xiao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, Sichuan, China
| | - Jian Zhong
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, Sichuan, China
| | - Joseph J Lancman
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Xuelan Chen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, Sichuan, China
| | - Xiangyu Pan
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, Sichuan, China
| | - Yu Yang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, Sichuan, China
| | - Lin Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, Sichuan, China
| | - Xiang Wang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Huashan Shi
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, Sichuan, China
| | - Dongmei Zhang
- Department of Gynecology and Obstetrics, West China Second University Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yuqin Yao
- West China School of Public Health, No. 4 West China Teaching Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Dan Cao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, Sichuan, China
| | - Chengjian Zhao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, Sichuan, China
| |
Collapse
|
6
|
Haddad AF, Young JS, Amara D, Berger MS, Raleigh DR, Aghi MK, Butowski NA. Mouse models of glioblastoma for the evaluation of novel therapeutic strategies. Neurooncol Adv 2021; 3:vdab100. [PMID: 34466804 PMCID: PMC8403483 DOI: 10.1093/noajnl/vdab100] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Glioblastoma (GBM) is an incurable brain tumor with a median survival of approximately 15 months despite an aggressive standard of care that includes surgery, chemotherapy, and ionizing radiation. Mouse models have advanced our understanding of GBM biology and the development of novel therapeutic strategies for GBM patients. However, model selection is crucial when testing developmental therapeutics, and each mouse model of GBM has unique advantages and disadvantages that can influence the validity and translatability of experimental results. To shed light on this process, we discuss the strengths and limitations of 3 types of mouse GBM models in this review: syngeneic models, genetically engineered mouse models, and xenograft models, including traditional xenograft cell lines and patient-derived xenograft models.
Collapse
Affiliation(s)
- Alexander F Haddad
- Department of Neurological Surgery, University of California, San Francisco, California, USA
| | - Jacob S Young
- Department of Neurological Surgery, University of California, San Francisco, California, USA
| | - Dominic Amara
- Department of Neurological Surgery, University of California, San Francisco, California, USA
| | - Mitchel S Berger
- Department of Neurological Surgery, University of California, San Francisco, California, USA
| | - David R Raleigh
- Department of Neurological Surgery, University of California, San Francisco, California, USA
- Department of Radiation Oncology, University of California, San Francisco, San Francisco, California, USA
| | - Manish K Aghi
- Department of Neurological Surgery, University of California, San Francisco, California, USA
| | - Nicholas A Butowski
- Department of Neurological Surgery, University of California, San Francisco, California, USA
- Corresponding Author: Nicholas A. Butowski, MD, Department of Neurological Surgery, University of California, San Francisco, 400 Parnassus Ave Eighth Floor, San Francisco, CA, 94143, USA ()
| |
Collapse
|
7
|
Zhang Z, Liu L, Ma C, Cui X, Lam RHW, Chen W. An in silico glioblastoma microenvironment model dissects the immunological mechanisms of resistance to PD-1 checkpoint blockade immunotherapy. SMALL METHODS 2021; 5:2100197. [PMID: 34423116 PMCID: PMC8372235 DOI: 10.1002/smtd.202100197] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Indexed: 05/02/2023]
Abstract
The PD-1 immune checkpoint-based therapy has emerged as a promising therapy strategy for treating the malignant brain tumor glioblastoma (GBM). However, patient response varies in clinical trials due in large to the tumor heterogeneity and immunological resistance in the tumor microenvironment. To further understand how mechanistically the niche interplay and competition drive anti-PD-1 resistance, we established an in-silico model to quantitatively describe the biological rationale of critical GBM-immune interactions, such as tumor growth and apoptosis, T cell activation and cytotoxicity, and tumor-associated macrophage (TAM) mediated immunosuppression. Such an in-silico experimentation and predictive model, based on the in vitro microfluidic chip-measured end-point data and patient-specific immunological characteristics, allowed for a comprehensive and dynamic analysis of multiple TAM-associated immunosuppression mechanisms against the anti-PD-1 immunotherapy. Our computational model demonstrated that the TAM-associated immunosuppression varied in severity across different GBM subtypes, which resulted in distinct tumor responses. Our prediction results indicated that a combination therapy co-targeting of PD-1 checkpoint and TAM-associated CSF-1R signaling could enhance the immune responses of GBM patients, especially those patients with mesenchymal GBM who are irresponsive to the single anti-PD-1 therapy. The development of a patient-specific in silico-in vitro GBM model would help navigate and personalize immunotherapies for GBM patients.
Collapse
Affiliation(s)
- Zhuoyu Zhang
- Department of Mechanical and Aerospace Engineering, New York University, Brooklyn, NY, 11201, USA
| | - Lunan Liu
- Department of Mechanical and Aerospace Engineering, New York University, Brooklyn, NY, 11201, USA
| | - Chao Ma
- Department of Mechanical and Aerospace Engineering, New York University, Brooklyn, NY, 11201, USA
| | - Xin Cui
- Department of Biomedical Engineering, Jinan University, Guangzhou, China
| | - Raymond H W Lam
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China
| | - Weiqiang Chen
- Department of Mechanical and Aerospace Engineering, New York University, Brooklyn, NY
| |
Collapse
|
8
|
Wang K, Kievit FM, Chiarelli PA, Stephen ZR, Lin G, Silber JR, Ellenbogen RG, Zhang M. siRNA nanoparticle suppresses drug-resistant gene and prolongs survival in an orthotopic glioblastoma xenograft mouse model. ADVANCED FUNCTIONAL MATERIALS 2021; 31:2007166. [PMID: 33708035 PMCID: PMC7942690 DOI: 10.1002/adfm.202007166] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Indexed: 05/31/2023]
Abstract
Temozolomide (TMZ) is the standard of care chemotherapy drug for treating glioblastomas (GBMs), the most aggressive cancer that affects people of all ages. However, its therapeutic efficacy is limited by the drug resistance mediated by a DNA repair protein, O6-methylguanine-DNA methyltransferase (MGMT), which eliminates the TMZ-induced DNA lesions. Here we report the development of an iron oxide nanoparticle (NP) system for targeted delivery of siRNAs to suppress the TMZ-resistance gene (MGMT). We show that our NP is able to overcome biological barriers, bind specifically to tumor cells, and reduce MGMT expression in tumors of mice bearing orthotopic GBM serially-passaged patient-derived xenografts. The treatment with sequential administration of this NP and TMZ resulted in increased apoptosis of GBM stem-like cells, reduced tumor growth, and significantly-prolonged survival as compared to mice treated with TMZ alone. This study introduces an approach that holds great promise to improve the outcomes of GBM patients.
Collapse
Affiliation(s)
- Kui Wang
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, United States
| | - Forrest M Kievit
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, United States
| | - Peter A Chiarelli
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, United States
| | - Zachary R Stephen
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, United States
| | - Guanyou Lin
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, United States
| | - John R Silber
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, United States
| | - Richard G Ellenbogen
- Department of Neurological Surgery, University of Washington, Seattle, WA 98195, United States
| | - Miqin Zhang
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, United States; Department of Neurological Surgery, University of Washington, Seattle, WA 98195, United States
| |
Collapse
|
9
|
Cui X, Ma C, Vasudevaraja V, Serrano J, Tong J, Peng Y, Delorenzo M, Shen G, Frenster J, Morales RTT, Qian W, Tsirigos A, Chi AS, Jain R, Kurz SC, Sulman EP, Placantonakis DG, Snuderl M, Chen W. Dissecting the immunosuppressive tumor microenvironments in Glioblastoma-on-a-Chip for optimized PD-1 immunotherapy. eLife 2020; 9:52253. [PMID: 32909947 PMCID: PMC7556869 DOI: 10.7554/elife.52253] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 08/27/2020] [Indexed: 12/13/2022] Open
Abstract
Programmed cell death protein-1 (PD-1) checkpoint immunotherapy efficacy remains unpredictable in glioblastoma (GBM) patients due to the genetic heterogeneity and immunosuppressive tumor microenvironments. Here, we report a microfluidics-based, patient-specific 'GBM-on-a-Chip' microphysiological system to dissect the heterogeneity of immunosuppressive tumor microenvironments and optimize anti-PD-1 immunotherapy for different GBM subtypes. Our clinical and experimental analyses demonstrated that molecularly distinct GBM subtypes have distinct epigenetic and immune signatures that may lead to different immunosuppressive mechanisms. The real-time analysis in GBM-on-a-Chip showed that mesenchymal GBM niche attracted low number of allogeneic CD154+CD8+ T-cells but abundant CD163+ tumor-associated macrophages (TAMs), and expressed elevated PD-1/PD-L1 immune checkpoints and TGF-β1, IL-10, and CSF-1 cytokines compared to proneural GBM. To enhance PD-1 inhibitor nivolumab efficacy, we co-administered a CSF-1R inhibitor BLZ945 to ablate CD163+ M2-TAMs and strengthened CD154+CD8+ T-cell functionality and GBM apoptosis on-chip. Our ex vivo patient-specific GBM-on-a-Chip provides an avenue for a personalized screening of immunotherapies for GBM patients.
Collapse
Affiliation(s)
- Xin Cui
- Department of Mechanical and Aerospace Engineering, New York University, Brooklyn, United States.,Department of Biomedical Engineering, New York University, Brooklyn, United States.,Department of Biomedical Engineering, Jinan University, Guangzhou, China
| | - Chao Ma
- Department of Mechanical and Aerospace Engineering, New York University, Brooklyn, United States.,Department of Biomedical Engineering, New York University, Brooklyn, United States
| | | | - Jonathan Serrano
- Department of Pathology, NYU Langone Health, New York, United States
| | - Jie Tong
- Department of Mechanical and Aerospace Engineering, New York University, Brooklyn, United States.,Department of Biomedical Engineering, New York University, Brooklyn, United States
| | - Yansong Peng
- Department of Biomedical Engineering, New York University, Brooklyn, United States
| | - Michael Delorenzo
- Department of Pathology, NYU Langone Health, New York, United States
| | - Guomiao Shen
- Department of Pathology, NYU Langone Health, New York, United States
| | - Joshua Frenster
- Stem Cell Biology Program, NYU School of Medicine, New York, United States
| | | | - Weiyi Qian
- Department of Mechanical and Aerospace Engineering, New York University, Brooklyn, United States
| | | | - Andrew S Chi
- Perlmutter Cancer Center, NYU Langone Health, New York, United States.,Department of Neurology, NYU Langone Health, New York, United States
| | - Rajan Jain
- Department of Neuroradiology, NYU Langone Health, New York, United States.,Department of Neurosurgery, NYU Langone Health, New York, United States
| | - Sylvia C Kurz
- Perlmutter Cancer Center, NYU Langone Health, New York, United States.,Department of Neurosurgery, NYU Langone Health, New York, United States
| | - Erik P Sulman
- Perlmutter Cancer Center, NYU Langone Health, New York, United States.,Department of Radiation Oncology, NYU Langone Health, New York, United States
| | - Dimitris G Placantonakis
- Perlmutter Cancer Center, NYU Langone Health, New York, United States.,Department of Neurosurgery, NYU Langone Health, New York, United States
| | - Matija Snuderl
- Department of Pathology, NYU Langone Health, New York, United States.,Perlmutter Cancer Center, NYU Langone Health, New York, United States
| | - Weiqiang Chen
- Department of Mechanical and Aerospace Engineering, New York University, Brooklyn, United States.,Department of Biomedical Engineering, New York University, Brooklyn, United States.,Perlmutter Cancer Center, NYU Langone Health, New York, United States
| |
Collapse
|
10
|
Gaps and Doubts in Search to Recognize Glioblastoma Cellular Origin and Tumor Initiating Cells. JOURNAL OF ONCOLOGY 2020; 2020:6783627. [PMID: 32774372 PMCID: PMC7396023 DOI: 10.1155/2020/6783627] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/22/2020] [Accepted: 06/13/2020] [Indexed: 12/20/2022]
Abstract
Cellular origin of glioblastoma (GB) is constantly discussed and remains a controversial subject. Unfortunately, neurobiologists are not consistent in defining neural stem cells (NSC) complicating this issue even further. Nevertheless, some suggestions referring to GB origin can be proposed based on comparing GB to central nervous system (CNS) cells. Firstly, GB cells show in vitro differentiation pattern similar to GFAP positive neural cells, rather than classical (GFAP negative) NSC. GB cells in primary cultures become senescent in vitro, similar to GFAP positive neural progenitors, whereas classical NSC proliferate in vitro infinitely. Classical NSC apoptosis triggered by introduction of IDH1R132H undermines hypothesis stating that IDH-mutant (secondary) GB origins from these NSC. Analysis of biological role of typical IDH-wildtype (primary) GB oncogene such as EGFRvIII also favors GFAP positive cells rather than classical NSC as source of GB. Single-cell NGS and single-cell transcriptomics also suggest that GFAP positive cells are GB origin. Considering the above-mentioned and other discussed in articles data, we suggest that GFAP positive cells (astrocytes, radial glia, or GFAP positive neural progenitors) are more likely to be source of GB than classical GFAP negative NSC, and further in vitro assays should be focused on these cells. It is highly possible that several populations of tumor initiating cells (TIC) exist within GB, adjusting their phenotype and even genotype to various environmental conditions including applied therapy and periodically going through different TIC states as well as non-TIC state. This adjustment is driven by changes in number and types of amplicons. The existence of various populations of TIC would enable creating neoplastic foci in different environments and increase tumor aggressiveness.
Collapse
|
11
|
Zhang J, Xue W, Xu K, Yi L, Guo Y, Xie T, Tong H, Zhou B, Wang S, Li Q, Liu H, Chen X, Fang J, Zhang W. Dual inhibition of PFKFB3 and VEGF normalizes tumor vasculature, reduces lactate production, and improves chemotherapy in glioblastoma: insights from protein expression profiling and MRI. Theranostics 2020; 10:7245-7259. [PMID: 32641990 PMCID: PMC7330843 DOI: 10.7150/thno.44427] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/18/2020] [Indexed: 12/11/2022] Open
Abstract
Rationale: Tumor vascular normalization (TVN) is emerging to enhance the efficacy of anticancer treatment in many cancers including glioblastoma (GBM). However, a common and severe challenge being currently faced is the transient TVN effect, hampering the sustained administration of anticancer therapy during TVN window. Additionally, the lack of non-contrast agent-based imaging biomarkers to monitor TVN process postpones the clinical translation of TVN strategy. In this study, we investigated whether dual inhibition of VEGF and the glycolytic activator PFKFB3 could reinforce the TVN effect in GBM. Dynamic contrast-enhanced-magnetic resonance imaging (DCE-MRI) and intravoxel incoherent motion (IVIM)-MRI were performed to monitor TVN process and to identify whether IVIM-MRI is a candidate or complementary imaging biomarker for monitoring TVN window without exogenous contrast agent administration. Methods: Patient-derived orthotopic GBM xenografts in mice were established and treated with bevacizumab (BEV), 3PO (PFKFB3 inhibitor), BEV+3PO dual therapy, or saline. The vascular morphology, tumor hypoxia, and lactate level were evaluated before and at different time points after treatments. Doxorubicin was used to evaluate chemotherapeutic efficacy and drug delivery. Microarray of angiogenesis cytokines and western blotting were conducted to characterize post-treatment molecular profiling. TVN process was monitored by DCE- and IVIM-MRI. Correlation analysis of pathological indicators and MRI parameters was further analyzed. Results: Dual therapy extended survival and delayed tumor growth over each therapy alone, concomitant with a decrease of cell proliferation and an increase of cell apoptosis. The dual therapy reinforces TVN effect, thereby alleviating tumor hypoxia, reducing lactate production, and improving the efficacy and delivery of doxorubicin. Mechanistically, several angiogenic cytokines and pathways were downregulated after dual therapy. Notably, dual therapy inhibited Tie1 expression, the key regulator of TVN, in both endothelial cells and tumor cells. DCE- and IVIM-MRI data showed that dual therapy induced a more homogenous and prominent TVN effect characterized by improved vascular function in tumor core and tumor rim. Correlation analysis revealed that IVIM-MRI parameter D* had better correlations with TVN pathological indicators compared with the DCE-MRI parameter Ktrans. Conclusions: Our results propose a rationale to overcome the current limitation of BEV monotherapy by integrating the synergistic effects of VEGF and PFKFB3 blockade to enhance chemotherapy efficacy through a sustained TVN effect. Moreover, we unveil IVIM-MRI parameter D* has much potential as a complementary imaging biomarker to monitor TVN window more precisely without exogenous contrast agent injection.
Collapse
Affiliation(s)
- Junfeng Zhang
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Wei Xue
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Kai Xu
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Liang Yi
- Department of Neurosurgery, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Yu Guo
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Tian Xie
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Haipeng Tong
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Bo Zhou
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Shunan Wang
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Qing Li
- Department of Oncology, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Heng Liu
- Department of Radiology, PLA Rocket Force Characteristic Medical Center, Beijing, 100088, China
| | - Xiao Chen
- Department of Nuclear Medicine, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Jingqin Fang
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Weiguo Zhang
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, 400042, China
- Chongqing Clinical Research Center of Imaging and Nuclear Medicine, Chongqing, 400042, China
| |
Collapse
|
12
|
Stegen B, Nieto A, Albrecht V, Maas J, Orth M, Neumaier K, Reinhardt S, Weick-Kleemann M, Goetz W, Reinhart M, Parodi K, Belka C, Niyazi M, Lauber K. Contrast-enhanced, conebeam CT-based, fractionated radiotherapy and follow-up monitoring of orthotopic mouse glioblastoma: a proof-of-concept study. Radiat Oncol 2020; 15:19. [PMID: 31969174 PMCID: PMC6977274 DOI: 10.1186/s13014-020-1470-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 01/15/2020] [Indexed: 12/20/2022] Open
Abstract
Background Despite aggressive treatment regimens comprising surgery and radiochemotherapy, glioblastoma (GBM) remains a cancer entity with very poor prognosis. The development of novel, combined modality approaches necessitates adequate preclinical model systems and therapy regimens that closely reflect the clinical situation. So far, image-guided, fractionated radiotherapy of orthotopic GBM models represents a major limitation in this regard. Methods GL261 mouse GBM cells were inoculated into the right hemispheres of C57BL/6 mice. Tumor growth was monitored by contrast-enhanced conebeam CT (CBCT) scans. When reaching an average volume of approximately 7 mm3, GBM tumors were irradiated with daily fractions of 2 Gy up to a cumulative dose of 20 Gy in different beam collimation settings. For treatment planning and tumor volume follow-up, contrast-enhanced CBCT scans were performed twice per week. Daily repositioning of animals was achieved by alignment of bony structures in native CBCT scans. When showing neurological symptoms, mice were sacrificed by cardiac perfusion. Brains, livers, and kidneys were processed into histologic sections. Potential toxic effects of contrast agent administration were assessed by measurement of liver enzyme and creatinine serum levels and by histologic examination. Results Tumors were successfully visualized by contrast-enhanced CBCT scans with a detection limit of approximately 2 mm3, and treatment planning could be performed. For daily repositioning of the animals, alignment of bony structures in native CT scans was well feasible. Fractionated irradiation caused a significant delay in tumor growth translating into significantly prolonged survival in clear dependence of the beam collimation setting and margin size. Brain sections revealed tumors of similar appearance and volume on the day of euthanasia. Importantly, the repeated contrast agent injections were well tolerated, as liver enzyme and creatinine serum levels were only subclinically elevated, and liver and kidney sections displayed normal histomorphology. Conclusions Contrast-enhanced, CT-based, fractionated radiation of orthotopic mouse GBM represents a versatile preclinical technique for the development and evaluation of multimodal radiotherapeutic approaches in combination with novel therapeutic agents in order to accelerate translation into clinical testing.
Collapse
Affiliation(s)
- Benjamin Stegen
- Department of Radiation Oncology, University Hospital, Ludwig-Maximilians-Universität München, Marchioninistrasse 15, 81377, Munich, Germany.,German Cancer Consortium (DKTK) partnersite Munich, Munich, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Alexander Nieto
- Department of Radiation Oncology, University Hospital, Ludwig-Maximilians-Universität München, Marchioninistrasse 15, 81377, Munich, Germany
| | - Valerie Albrecht
- Department of Radiation Oncology, University Hospital, Ludwig-Maximilians-Universität München, Marchioninistrasse 15, 81377, Munich, Germany
| | - Jessica Maas
- Department of Radiation Oncology, University Hospital, Ludwig-Maximilians-Universität München, Marchioninistrasse 15, 81377, Munich, Germany
| | - Michael Orth
- Department of Radiation Oncology, University Hospital, Ludwig-Maximilians-Universität München, Marchioninistrasse 15, 81377, Munich, Germany.,German Cancer Consortium (DKTK) partnersite Munich, Munich, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Klement Neumaier
- Department of Radiation Oncology, University Hospital, Ludwig-Maximilians-Universität München, Marchioninistrasse 15, 81377, Munich, Germany
| | - Sabine Reinhardt
- Department of Medical Physics, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Moritz Weick-Kleemann
- Department of Medical Physics, Ludwig-Maximilians-Universität München, Munich, Germany
| | | | | | - Katia Parodi
- Department of Medical Physics, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Claus Belka
- Department of Radiation Oncology, University Hospital, Ludwig-Maximilians-Universität München, Marchioninistrasse 15, 81377, Munich, Germany.,German Cancer Consortium (DKTK) partnersite Munich, Munich, Germany.,Clinical Cooperation Group 'Personalized Radiotherapy in Head and Neck Cancer' Helmholtz Center Munich, German Research Center for Environmental Health GmbH, Neuherberg, Germany
| | - Maximilian Niyazi
- Department of Radiation Oncology, University Hospital, Ludwig-Maximilians-Universität München, Marchioninistrasse 15, 81377, Munich, Germany.,German Cancer Consortium (DKTK) partnersite Munich, Munich, Germany
| | - Kirsten Lauber
- Department of Radiation Oncology, University Hospital, Ludwig-Maximilians-Universität München, Marchioninistrasse 15, 81377, Munich, Germany. .,German Cancer Consortium (DKTK) partnersite Munich, Munich, Germany. .,Clinical Cooperation Group 'Personalized Radiotherapy in Head and Neck Cancer' Helmholtz Center Munich, German Research Center for Environmental Health GmbH, Neuherberg, Germany.
| |
Collapse
|
13
|
Olubajo F, Achawal S, Greenman J. Development of a Microfluidic Culture Paradigm for Ex Vivo Maintenance of Human Glioblastoma Tissue: A New Glioblastoma Model? Transl Oncol 2019; 13:1-10. [PMID: 31726354 PMCID: PMC6854064 DOI: 10.1016/j.tranon.2019.09.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 09/03/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND: One way to overcome the genetic and molecular variations within glioblastoma is to treat each tumour on an individual basis. To facilitate this, we have developed a microfluidic culture paradigm that maintains human glioblastoma tissue ex vivo. METHODS: The assembled device, fabricated using a photolithographic process, is composed of two layers of glass bonded together to contain a tissue chamber and a network of microchannels that allow continued tissue perfusion. RESULTS: A total of 128 tissue biopsies (from 33 patients) were maintained in microfluidic devices for an average of 72 hours. Tissue viability (measured with Annexin V and propidium iodide) was 61.1% in tissue maintained on chip compared with 68.9% for fresh tissue analysed at commencement of the experiments. Other biomarkers, including lactate dehydrogenase absorbance and trypan blue exclusion, supported the viability of the tissue maintained on chip. Histological appearances remained unchanged during the tissue maintenance period, and immunohistochemical analysis of Ki67 and caspase 3 showed no significant differences when compared with fresh tissues. A trend showed that tumours associated with poorer outcomes (recurrent tumours and Isocitrate Dehydrogenase - IDH wildtype) displayed higher viability on chip than tumours linked with improved outcomes (low-grade gliomas, IDH mutants and primary tumours). conclusions: This work has demonstrated for the first time that human glioblastoma tissue can be successfully maintained within a microfluidic device and has the potential to be developed as a new platform for studying the biology of brain tumours, with the long-term aim of replacing current preclinical GBM models and facilitating personalised treatments.
Collapse
Affiliation(s)
- Farouk Olubajo
- Department of Neurosurgery, Hull and East Yorkshire Hospitals, Hull Royal Infirmary, Anlaby Road, Hull, HU3 2JZ, UK.
| | - Shailendra Achawal
- Department of Neurosurgery, Hull and East Yorkshire Hospitals, Hull Royal Infirmary, Anlaby Road, Hull, HU3 2JZ, UK
| | - John Greenman
- Department of Biomedical Sciences, University of Hull, Cottingham Road, Hull, HU6 7RX, UK
| |
Collapse
|
14
|
Mortimer T, Wainwright EN, Patel H, Siow BM, Jaunmuktane Z, Brandner S, Scaffidi P. Redistribution of EZH2 promotes malignant phenotypes by rewiring developmental programmes. EMBO Rep 2019; 20:e48155. [PMID: 31468686 PMCID: PMC6776892 DOI: 10.15252/embr.201948155] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 08/05/2019] [Accepted: 08/08/2019] [Indexed: 01/08/2023] Open
Abstract
Epigenetic regulators are often hijacked by cancer cells to sustain malignant phenotypes. How cells repurpose key regulators of cell identity as tumour-promoting factors is unclear. The antithetic role of the Polycomb component EZH2 in normal brain and glioma provides a paradigm to dissect how wild-type chromatin modifiers gain a pathological function in cancer. Here, we show that oncogenic signalling induces redistribution of EZH2 across the genome, and through misregulation of homeotic genes corrupts the identity of neural cells. Characterisation of EZH2 targets in de novo transformed cells, combined with analysis of glioma patient datasets and cell lines, reveals that acquisition of tumorigenic potential is accompanied by a transcriptional switch involving de-repression of spinal cord-specifying HOX genes and concomitant silencing of the empty spiracles homologue EMX2, a critical regulator of neurogenesis in the forebrain. Maintenance of tumorigenic potential by glioblastoma cells requires EMX2 repression, since forced EMX2 expression prevents tumour formation. Thus, by redistributing EZH2 across the genome, cancer cells subvert developmental transcriptional programmes that specify normal cell identity and remove physiological breaks that restrain cell proliferation.
Collapse
MESH Headings
- Animals
- Carcinogenesis/genetics
- Carcinogenesis/pathology
- Cell Line, Tumor
- Cell Transformation, Neoplastic/metabolism
- Cell Transformation, Neoplastic/pathology
- Chromatin/metabolism
- DNA Methylation/genetics
- Enhancer of Zeste Homolog 2 Protein/metabolism
- Gene Expression Regulation, Neoplastic
- Genes, Homeobox
- Glioma/genetics
- Glioma/pathology
- Humans
- Male
- Mice, Inbred NOD
- Models, Biological
- Phenotype
- Protein Binding
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Transcription, Genetic
Collapse
Affiliation(s)
- Thomas Mortimer
- Cancer Epigenetics LaboratoryThe Francis Crick InstituteLondonUK
| | | | - Harshil Patel
- Bioinformatics and BiostatisticsThe Francis Crick InstituteLondonUK
| | | | - Zane Jaunmuktane
- Department of Clinical and Movement NeurosciencesQueen Square Brain BankUCL Queen Square Institute of NeurologyLondonUK
- Division of NeuropathologyNational Hospital for Neurology and NeurosurgeryUniversity College London Hospitals NHS Foundation TrustLondonUK
| | - Sebastian Brandner
- Division of NeuropathologyNational Hospital for Neurology and NeurosurgeryUniversity College London Hospitals NHS Foundation TrustLondonUK
- Department of Neurodegenerative DiseaseUCL Queen Square Institute of NeurologyLondonUK
| | - Paola Scaffidi
- Cancer Epigenetics LaboratoryThe Francis Crick InstituteLondonUK
- UCL Cancer InstituteUniversity College LondonLondonUK
| |
Collapse
|
15
|
da Hora CC, Schweiger MW, Wurdinger T, Tannous BA. Patient-Derived Glioma Models: From Patients to Dish to Animals. Cells 2019; 8:E1177. [PMID: 31574953 PMCID: PMC6829406 DOI: 10.3390/cells8101177] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/13/2019] [Accepted: 09/27/2019] [Indexed: 02/07/2023] Open
Abstract
Glioblastoma (GBM) is the most common and malignant primary brain tumor in adults associated with a poor survival. Current standard of care consists of surgical resection followed by radiation and chemotherapy. GBMs are highly heterogeneous, having a complex interaction among different cells within the tumor as well as the tumor microenvironment. One of the main challenges in the neuro-oncology field in general, and GBM in particular, is to find an optimum culture condition that maintains the molecular genotype and phenotype as well as heterogeneity of the original tumor in vitro and in vivo. Established cell lines were shown to be a poor model of the disease, failing to recapitulate the phenotype and harboring non-parental genotypic mutations. Given the growing understanding of GBM biology, the discovery of glioma cancer stem-like cells (GSCs), and their role in tumor formation and therapeutic resistance, scientists are turning more towards patient-derived cells and xenografts as a more representative model. In this review, we will discuss the current state of patient-derived GSCs and their xenografts; and provide an overview of different established models to study GBM biology and to identify novel therapeutics in the pre-clinical phase.
Collapse
Affiliation(s)
- Cintia Carla da Hora
- Experimental Therapeutics and Molecular Imaging Laboratory, Department of Neurology, Neuro-Oncology Division, Massachusetts General Hospital, Boston, MA 02129, USA
- Neuroscience Program, Harvard Medical School, Boston MA 02129, USA
- Department of Neurosurgery, Cancer Center Amsterdam, Brain Tumor Center Amsterdam, Amsterdam UMC, Vrije Universiteit Medical Center, 1081 HV Amsterdam, The Netherlands
| | - Markus W Schweiger
- Experimental Therapeutics and Molecular Imaging Laboratory, Department of Neurology, Neuro-Oncology Division, Massachusetts General Hospital, Boston, MA 02129, USA
- Neuroscience Program, Harvard Medical School, Boston MA 02129, USA
- Department of Neurosurgery, Cancer Center Amsterdam, Brain Tumor Center Amsterdam, Amsterdam UMC, Vrije Universiteit Medical Center, 1081 HV Amsterdam, The Netherlands
| | - Thomas Wurdinger
- Department of Neurosurgery, Cancer Center Amsterdam, Brain Tumor Center Amsterdam, Amsterdam UMC, Vrije Universiteit Medical Center, 1081 HV Amsterdam, The Netherlands
| | - Bakhos A Tannous
- Experimental Therapeutics and Molecular Imaging Laboratory, Department of Neurology, Neuro-Oncology Division, Massachusetts General Hospital, Boston, MA 02129, USA.
- Neuroscience Program, Harvard Medical School, Boston MA 02129, USA.
| |
Collapse
|
16
|
Broekman ML, Maas SLN, Abels ER, Mempel TR, Krichevsky AM, Breakefield XO. Multidimensional communication in the microenvirons of glioblastoma. Nat Rev Neurol 2019; 14:482-495. [PMID: 29985475 DOI: 10.1038/s41582-018-0025-8] [Citation(s) in RCA: 359] [Impact Index Per Article: 71.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Glioblastomas are heterogeneous and invariably lethal tumours. They are characterized by genetic and epigenetic variations among tumour cells, which makes the development of therapies that eradicate all tumour cells challenging and currently impossible. An important component of glioblastoma growth is communication with and manipulation of other cells in the brain environs, which supports tumour progression and resistance to therapy. Glioblastoma cells recruit innate immune cells and change their phenotype to support tumour growth. Tumour cells also suppress adaptive immune responses, and our increasing understanding of how T cells access the brain and how the tumour thwarts the immune response offers new strategies for mobilizing an antitumour response. Tumours also subvert normal brain cells - including endothelial cells, neurons and astrocytes - to create a microenviron that favours tumour success. Overall, after glioblastoma-induced phenotypic modifications, normal cells cooperate with tumour cells to promote tumour proliferation, invasion of the brain, immune suppression and angiogenesis. This glioblastoma takeover of the brain involves multiple modes of communication, including soluble factors such as chemokines and cytokines, direct cell-cell contact, extracellular vesicles (including exosomes and microvesicles) and connecting nanotubes and microtubes. Understanding these multidimensional communications between the tumour and the cells in its environs could open new avenues for therapy.
Collapse
Affiliation(s)
- Marike L Broekman
- Department of Neurology and Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA, USA. .,Department of Neurosurgery, Brain Center Rudolf Magnus, Institute of Neurosciences, University Medical Center, Heidelberglaan, Utrecht, Netherlands.
| | - Sybren L N Maas
- Department of Neurology and Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA, USA.,Department of Neurosurgery, Brain Center Rudolf Magnus, Institute of Neurosciences, University Medical Center, Heidelberglaan, Utrecht, Netherlands
| | - Erik R Abels
- Department of Neurology and Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA, USA
| | - Thorsten R Mempel
- The Center for Immunology and Inflammatory Diseases and Department of Medicine, Massachusetts General Hospital, Charlestown, MA, USA.,Program in Immunology, Harvard Medical School, Boston, MA, USA
| | - Anna M Krichevsky
- Department of Neurology, Ann Romney Center for Neurologic Diseases, Initiative for RNA Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Xandra O Breakefield
- Department of Neurology and Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA, USA.
| |
Collapse
|
17
|
Gupta SK, Smith EJ, Mladek AC, Tian S, Decker PA, Kizilbash SH, Kitange GJ, Sarkaria JN. PARP Inhibitors for Sensitization of Alkylation Chemotherapy in Glioblastoma: Impact of Blood-Brain Barrier and Molecular Heterogeneity. Front Oncol 2019; 8:670. [PMID: 30723695 PMCID: PMC6349736 DOI: 10.3389/fonc.2018.00670] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 12/19/2018] [Indexed: 12/22/2022] Open
Abstract
Prognosis of patients with glioblastoma (GBM) remains dismal despite maximal surgical resection followed by aggressive chemo-radiation therapy. Almost every GBM, regardless of genotype, relapses as aggressive recurrent disease. Sensitization of GBM cells to chemo-radiation is expected to extend survival of patients with GBM by enhancing treatment efficacy. The PARP family of enzymes has a pleiotropic role in DNA repair and metabolism and has emerged as an attractive target for sensitization of cancer cells to genotoxic therapies. However, despite promising results from a number of preclinical studies, progress of clinical trials involving PARP inhibitors (PARPI) has been slower in GBM as compared to other malignancies. Preclinical in vivo studies have uncovered limitations of PARPI-mediated targeting of base excision repair, considered to be the likely mechanism of sensitization for temozolomide (TMZ)-resistant GBM. Nevertheless, PARPI remain a promising sensitizing approach for at least a subset of GBM tumors that are inherently sensitive to TMZ. Our PDX preclinical trial has helped delineate MGMT promoter hyper-methylation as a biomarker of the PARPI veliparib-mediated sensitization. In clinical trials, MGMT promoter hyper-methylation now is being studied as a potential predictive biomarker not only for response to TMZ therapy alone, but also PARPI-mediated sensitization of TMZ therapy. Besides the combination approach being investigated, IDH1/2 mutant gliomas associated with 2-hydroxygluterate (2HG)-mediated homologous recombination (HR) defect may potentially benefit from PARPI monotherapy. In this article, we discuss existing results and provide additional data in support of potential alternative mechanisms of sensitization that would help identify potential biomarkers for PARPI-based therapeutic approaches to GBM.
Collapse
Affiliation(s)
- Shiv K Gupta
- Departments of Radiation Oncology, Mayo Clinic, Rochester, MN, United States
| | - Emily J Smith
- Departments of Radiation Oncology, Mayo Clinic, Rochester, MN, United States
| | - Ann C Mladek
- Departments of Radiation Oncology, Mayo Clinic, Rochester, MN, United States
| | - Shulan Tian
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, United States
| | - Paul A Decker
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, United States
| | - Sani H Kizilbash
- Departments of Oncology, Mayo Clinic, Rochester, MN, United States
| | - Gaspar J Kitange
- Departments of Radiation Oncology, Mayo Clinic, Rochester, MN, United States
| | - Jann N Sarkaria
- Departments of Radiation Oncology, Mayo Clinic, Rochester, MN, United States
| |
Collapse
|