1
|
Wyszatko K, Janzen N, Silva LR, Kwon L, Komal T, Ventura M, Venugopal C, Singh SK, Valliant JF, Sadeghi S. 89Zr-labeled ImmunoPET targeting the cancer stem cell antigen CD133 using fully-human antibody constructs. EJNMMI Res 2024; 14:29. [PMID: 38498285 PMCID: PMC10948676 DOI: 10.1186/s13550-024-01091-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 03/04/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND Cancer stem cells play an important role in driving tumor growth and treatment resistance, which makes them a promising therapeutic target to prevent cancer recurrence. Emerging cancer stem cell-targeted therapies would benefit from companion diagnostic imaging probes to aid in patient selection and monitoring response to therapy. To this end, zirconium-89-radiolabeled immunoPET probes that target the cancer stem cell-antigen CD133 were developed using fully human antibody and antibody scFv-Fc scaffolds. RESULTS ImmunoPET probes [89Zr]-DFO-RW03IgG (CA = 0.7 ± 0.1), [89Zr]-DFO-RW03IgG (CA = 3.0 ± 0.3), and [89Zr]-DFO-RW03scFv - Fc (CA = 2.9 ± 0.3) were radiolabeled with zirconium-89 (radiochemical yield 42 ± 5%, 97 ± 2%, 86 ± 12%, respectively) and each was isolated in > 97% radiochemical purity with specific activities of 120 ± 30, 270 ± 90, and 200 ± 60 MBq/mg, respectively. In vitro binding assays showed a low-nanomolar binding affinity of 0.6 to 1.1 nM (95% CI) for DFO-RW03IgG (CA = 0.7 ± 0.1), 0.3 to 1.9 nM (95% CI) for DFO-RW03IgG (CA = 3.0 ± 0.3), and 1.5 to 3.3 nM (95% CI) for DFO-RW03scFv - Fc (C/A = 0.3). Biodistribution studies found that [89Zr]-DFO-RW03scFv - Fc (CA = 2.9 ± 0.3) exhibited the highest tumor uptake (23 ± 4, 21 ± 2, and 23 ± 4%ID/g at 24, 48, and 72 h, respectively) and showed low uptake (< 6%ID/g) in all off-target organs at each timepoint (24, 48, and 72 h). Comparatively, [89Zr]-DFO-RW03IgG (CA = 0.7 ± 0.1) and [89Zr]-DFO-RW03IgG (CA = 3.0 ± 0.3) both reached maximum tumor uptake (16 ± 3%ID/g and 16 ± 2%ID/g, respectively) at 96 h p.i. and showed higher liver uptake (10.2 ± 3%ID/g and 15 ± 3%ID/g, respectively) at that timepoint. Region of interest analysis to assess PET images of mice administered [89Zr]-DFO-RW03scFv - Fc (CA = 2.9 ± 0.3) showed that this probe reached a maximum tumor uptake of 22 ± 1%ID/cc at 96 h, providing a tumor-to-liver ratio that exceeded 1:1 at 48 h p.i. Antibody-antigen mediated tumor uptake was demonstrated through biodistribution and PET imaging studies, where for each probe, co-injection of excess unlabeled RW03IgG resulted in > 60% reduced tumor uptake. CONCLUSIONS Fully human CD133-targeted immunoPET probes [89Zr]-DFO-RW03IgG and [89Zr]-DFO-RW03scFv - Fc accumulate in CD133-expressing tumors to enable their delineation through PET imaging. Having identified [89Zr]-DFO-RW03scFv - Fc (CA = 2.9 ± 0.3) as the most attractive construct for CD133-expressing tumor delineation, the next step is to evaluate this probe using patient-derived tumor models to test its detection limit prior to clinical translation.
Collapse
Affiliation(s)
- Kevin Wyszatko
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, ON, Canada
| | - Nancy Janzen
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, ON, Canada
| | - Luis Rafael Silva
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, ON, Canada
| | - Luke Kwon
- Spatio-Temporal Targeting and Amplification of Radiation Response Innovation Centre (STTARR), University Health Network, Toronto, ON, Canada
| | - Teesha Komal
- Spatio-Temporal Targeting and Amplification of Radiation Response Innovation Centre (STTARR), University Health Network, Toronto, ON, Canada
| | - Manuela Ventura
- Spatio-Temporal Targeting and Amplification of Radiation Response Innovation Centre (STTARR), University Health Network, Toronto, ON, Canada
| | - Chitra Venugopal
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
| | - Sheila K Singh
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - John F Valliant
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, ON, Canada
| | - Saman Sadeghi
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, ON, Canada.
| |
Collapse
|
2
|
Kieliszek AM, Mobilio D, Upreti D, Bloemberg D, Escudero L, Kwiecien JM, Alizada Z, Zhai K, Ang P, Chafe SC, Vora P, Venugopal C, Singh SK. Intratumoral Delivery of Chimeric Antigen Receptor T Cells Targeting CD133 Effectively Treats Brain Metastases. Clin Cancer Res 2024; 30:554-563. [PMID: 37787999 DOI: 10.1158/1078-0432.ccr-23-1735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/18/2023] [Accepted: 09/29/2023] [Indexed: 10/04/2023]
Abstract
PURPOSE Brain metastases (BM) are mainly treated palliatively with an expected survival of less than 12 months after diagnosis. In many solid tumors, the human neural stem cell marker glycoprotein CD133 is a marker of a tumor-initiating cell population that contributes to therapy resistance, relapse, and metastasis. EXPERIMENTAL DESIGN Here, we use a variant of our previously described CD133 binder to generate second-generation CD133-specific chimeric antigen receptor T cells (CAR-T) to demonstrate its specificity and efficacy against multiple patient-derived BM cell lines with variable CD133 antigen expression. RESULTS Using both lung- and colon-BM patient-derived xenograft models, we show that a CD133-targeting CAR-T cell therapy can evoke significant tumor reduction and survival advantage after a single dose, with complete remission observed in the colon-BM model. CONCLUSIONS In summary, these data suggest that CD133 plays a critical role in fueling the growth of BM, and immunotherapeutic targeting of this cell population is a feasible strategy to control the outgrowth of BM tumors that are otherwise limited to palliative care. See related commentary by Sloan et al., p. 477.
Collapse
Affiliation(s)
- Agata M Kieliszek
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Daniel Mobilio
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | | | | | - Laura Escudero
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Jacek M Kwiecien
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Zahra Alizada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Kui Zhai
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Patrick Ang
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Shawn C Chafe
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Parvez Vora
- Century Therapeutics, Hamilton, Ontario, Canada
| | - Chitra Venugopal
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Sheila K Singh
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| |
Collapse
|
3
|
Smith CJ, Perfetti TA, Chokshi C, Venugopal C, Ashford JW, Singh SK. Risk factors for glioblastoma are shared by other brain tumor types. Hum Exp Toxicol 2024; 43:9603271241241796. [PMID: 38520250 DOI: 10.1177/09603271241241796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2024]
Abstract
The reported risk factors for glioblastoma (GBM), i.e., ionizing radiation, Li-Fraumeni syndrome, Neurofibromatosis I, and Turcot syndrome, also increase the risk of other brain tumor types. Risk factors for human GBM are associated with different oncogenic mutation profiles. Pedigreed domestic dogs with a shorter nose and flatter face (brachycephalic dogs) display relatively high rates of glioma formation. The genetic profiles of canine gliomas are also idiosyncratic. The association of putatively different mutational patterns in humans and canines with GBM suggests that different oncogenic pathways can result in GBM formation. Strong epidemiological evidence for an association between exposure to chemical carcinogens and an increased risk for development of GBM is currently lacking. Ionizing radiation induces point mutations, frameshift mutations, double-strand breaks, and chromosomal insertions or deletions. Mutational profiles associated with chemical exposures overlap with the broad mutational patterns seen with ionizing radiation. Weak statistical associations between chemical exposures and GBM reported in epidemiology studies are biologically plausible. Molecular approaches comparing reproducible patterns seen in spontaneous GBM with analogous patterns found in GBMs resected from patients with known significant exposures to potentially carcinogenic chemicals can address difficulties presented by traditional exposure assessment.
Collapse
Affiliation(s)
- Carr J Smith
- Society for Brain Mapping and Therapeutics, Mobile, AL, USA
| | | | - Chirayu Chokshi
- Department of Surgery, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Center for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON, Canada
| | - J Wesson Ashford
- Stanford University and VA Palo Alto Health Care System, Palo Alto, CA, USA
| | - Sheila K Singh
- Department of Surgery, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Center for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON, Canada
| |
Collapse
|
4
|
Chan JK, Gwynne WD, Lieng BY, Quaile AT, Venugopal C, Singh SK, Montenegro-Burke JR. Protocol for mapping the metabolome and lipidome of medulloblastoma cells using liquid chromatography-mass spectrometry. STAR Protoc 2023; 4:102736. [PMID: 37999971 PMCID: PMC10709382 DOI: 10.1016/j.xpro.2023.102736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/25/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
Liquid chromatography-mass spectrometry (LC-MS)-based metabolomics and lipidomics have recently been used to show that MYC-amplified group 3 medulloblastoma tumors are driven by metabolic reprogramming. Here, we present a protocol to extract metabolites and lipids from human medulloblastoma brain tumor-initiating cells and normal neural stem cells. We describe untargeted LC-MS methods that can be used to achieve extensive coverage of the polar metabolome and lipidome. Finally, we detail strategies for metabolite identification and data analysis. For complete details on the use and execution of this protocol, please refer to Gwynne et al.1.
Collapse
Affiliation(s)
- Jeremy K Chan
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada; Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - William D Gwynne
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada; Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Brandon Y Lieng
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada; Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Andrew T Quaile
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada; Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Sheila K Singh
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - J Rafael Montenegro-Burke
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada; Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada.
| |
Collapse
|
5
|
Bakhshinyan D, Suk Y, Kuhlmann L, Adile AA, Ignatchenko V, Custers S, Gwynne WD, Macklin A, Venugopal C, Kislinger T, Singh SK. Correction to: Dynamic profiling of medulloblastoma surfaceome. Acta Neuropathol Commun 2023; 11:169. [PMID: 37872586 PMCID: PMC10594668 DOI: 10.1186/s40478-023-01666-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023] Open
Affiliation(s)
- David Bakhshinyan
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, MDCL, Hamilton, ON, 5027, L8S 4K1, Canada
- 2Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Yujin Suk
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, MDCL, Hamilton, ON, 5027, L8S 4K1, Canada
- 2Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
- 3Michael G DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | | | - Ashley A Adile
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, MDCL, Hamilton, ON, 5027, L8S 4K1, Canada
- 2Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Vladimir Ignatchenko
- Margaret Cancer Center, UHN, Toronto, ON, Canada
- 5Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Stefan Custers
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, MDCL, Hamilton, ON, 5027, L8S 4K1, Canada
- 2Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - William D Gwynne
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, MDCL, Hamilton, ON, 5027, L8S 4K1, Canada
- 2Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Andrew Macklin
- Margaret Cancer Center, UHN, Toronto, ON, Canada
- 5Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Chitra Venugopal
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, MDCL, Hamilton, ON, 5027, L8S 4K1, Canada
- 6Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Thomas Kislinger
- Margaret Cancer Center, UHN, Toronto, ON, Canada
- 5Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Sheila K Singh
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, MDCL, Hamilton, ON, 5027, L8S 4K1, Canada.
- 2Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada.
- 6Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada.
| |
Collapse
|
6
|
Bakhshinyan D, Suk Y, Kuhlmann L, Adile AA, Ignatchenko V, Custers S, Gwynne WD, Macklin A, Venugopal C, Kislinger T, Singh SK. Dynamic profiling of medulloblastoma surfaceome. Acta Neuropathol Commun 2023; 11:111. [PMID: 37430373 PMCID: PMC10331972 DOI: 10.1186/s40478-023-01609-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/26/2023] [Indexed: 07/12/2023] Open
Abstract
Medulloblastoma (MB) is the most common type of malignant pediatric brain cancer. The current standard of care (SOC) involves maximal safe resection and chemoradiotherapy in individuals older than 3 years, often leading to devastating neurocognitive and developmental deficits. Out of the four distinct molecular subgroups, Group 3 and 4 have the poorest patient outcomes due to the aggressive nature of the tumor and propensity to metastasize and recur post therapy. The toxicity of the SOC and lack of response in specific subtypes to the SOC underscores the urgent need for developing and translating novel treatment options including immunotherapies. To identify differentially enriched surface proteins that could be evaluated for potential future immunotherapeutic interventions, we leveraged N-glycocapture surfaceome profiling on Group 3 MB cells from primary tumor, through therapy, to recurrence using our established therapy-adapted patient derived xenograft model. Integrin 𝛼5 (ITGA5) was one of the most differentially enriched targets found at recurrence when compared to engraftment and untreated timepoints. In addition to being enriched at recurrence, shRNA-mediated knockdown and small molecule inhibition of ITGA5 have resulted in marked decrease in proliferation and self-renewal in vitro and demonstrated a survival advantage in vivo. Together, our data highlights the value of dynamic profiling of cells as they evolve through therapy and the identification of ITGA5 as a promising therapeutic target for recurrent Group 3 MB.
Collapse
Affiliation(s)
- David Bakhshinyan
- McMaster Centre for Discovery in Cancer Research, McMaster University, MDCL 5027, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Yujin Suk
- McMaster Centre for Discovery in Cancer Research, McMaster University, MDCL 5027, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
- Michael G DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Laura Kuhlmann
- Princess Margaret Cancer Center, UHN, Toronto, ON, Canada
| | - Ashley A Adile
- McMaster Centre for Discovery in Cancer Research, McMaster University, MDCL 5027, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Vladimir Ignatchenko
- Princess Margaret Cancer Center, UHN, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Stefan Custers
- McMaster Centre for Discovery in Cancer Research, McMaster University, MDCL 5027, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - William D Gwynne
- McMaster Centre for Discovery in Cancer Research, McMaster University, MDCL 5027, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Andrew Macklin
- Princess Margaret Cancer Center, UHN, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Chitra Venugopal
- McMaster Centre for Discovery in Cancer Research, McMaster University, MDCL 5027, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Thomas Kislinger
- Princess Margaret Cancer Center, UHN, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Sheila K Singh
- McMaster Centre for Discovery in Cancer Research, McMaster University, MDCL 5027, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada.
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada.
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada.
| |
Collapse
|
7
|
Martell E, Kuzmychova H, Senthil H, Kaul E, Chokshi CR, Venugopal C, Anderson CM, Singh SK, Sharif T. Compensatory cross-talk between autophagy and glycolysis regulates senescence and stemness in heterogeneous glioblastoma tumor subpopulations. Acta Neuropathol Commun 2023; 11:110. [PMID: 37420311 PMCID: PMC10327182 DOI: 10.1186/s40478-023-01604-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/16/2023] [Indexed: 07/09/2023] Open
Abstract
Despite tremendous research efforts, successful targeting of aberrant tumor metabolism in clinical practice has remained elusive. Tumor heterogeneity and plasticity may play a role in the clinical failure of metabolism-targeting interventions for treating cancer patients. Moreover, compensatory growth-related processes and adaptive responses exhibited by heterogeneous tumor subpopulations to metabolic inhibitors are poorly understood. Here, by using clinically-relevant patient-derived glioblastoma (GBM) cell models, we explore the cross-talk between glycolysis, autophagy, and senescence in maintaining tumor stemness. We found that stem cell-like GBM tumor subpopulations possessed higher basal levels of glycolytic activity and increased expression of several glycolysis-related enzymes including, GLUT1/SLC2A1, PFKP, ALDOA, GAPDH, ENO1, PKM2, and LDH, compared to their non-stem-like counterparts. Importantly, bioinformatics analysis also revealed that the mRNA expression of glycolytic enzymes positively correlates with stemness markers (CD133/PROM1 and SOX2) in patient GBM tumors. While treatment with glycolysis inhibitors induced senescence in stem cell-like GBM tumor subpopulations, as evidenced by increased β-galactosidase staining and upregulation of the cell cycle regulators p21Waf1/Cip1/CDKN1A and p16INK4A/CDKN2A, these cells maintained their aggressive stemness features and failed to undergo apoptotic cell death. Using various techniques including autophagy flux and EGFP-MAP1LC3B+ puncta formation analysis, we determined that inhibition of glycolysis led to the induction of autophagy in stem cell-like GBM tumor subpopulations, but not in their non-stem-like counterparts. Similarly, blocking autophagy in stem cell-like GBM tumor subpopulations induced senescence-associated growth arrest without hampering stemness capacity or inducing apoptosis while reciprocally upregulating glycolytic activity. Combinatorial treatment of stem cell-like GBM tumor subpopulations with autophagy and glycolysis inhibitors blocked the induction of senescence while drastically impairing their stemness capacity which drove cells towards apoptotic cell death. These findings identify a novel and complex compensatory interplay between glycolysis, autophagy, and senescence that helps maintain stemness in heterogeneous GBM tumor subpopulations and provides a survival advantage during metabolic stress.
Collapse
Affiliation(s)
- Emma Martell
- Department of Pathology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Helgi Kuzmychova
- Department of Pathology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Harshal Senthil
- Department of Pathology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Esha Kaul
- Faculty of Science, University of Manitoba, Winnipeg, MB, Canada
| | - Chirayu R Chokshi
- Department of Biochemistry, McMaster University, Hamilton, ON, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Christopher M Anderson
- Department of Pharmacology and Therapeutics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
- Neuroscience Research Program, Kleysen Institute for Advanced Medicine, Health Sciences Centre, Winnipeg, MB, Canada
| | - Sheila K Singh
- Department of Biochemistry, McMaster University, Hamilton, ON, Canada
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Tanveer Sharif
- Department of Pathology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.
| |
Collapse
|
8
|
Adile AA, Bakhshinyan D, Suk Y, Uehling D, Saini M, Aman A, Magolan J, Subapanditha MK, McKenna D, Chokshi C, Savage N, Kameda-Smith MM, Venugopal C, Singh SK. An effective kinase inhibition strategy for metastatic recurrent childhood medulloblastoma. J Neurooncol 2023; 163:635-645. [PMID: 37354357 DOI: 10.1007/s11060-023-04372-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 06/13/2023] [Indexed: 06/26/2023]
Abstract
PURPOSE Medulloblastomas (MBs) constitute the most common malignant brain tumor in children and adolescents. MYC-amplified Group 3 MBs are characterized by disease recurrence, specifically in the leptomeninges, whereby patients with these metastatic tumors have a mortality rate nearing 100%. Despite limited research on such tumors, studies on MB metastases at diagnosis suggest targeting kinases to be beneficial. METHODS To identify kinase inhibitors that eradicate cells driving therapy evasion and tumor dissemination, we utilized our established patient-derived xenograft (PDX) mouse-adapted therapy platform that models human MB metastatic recurrences following standard chemoradiotherapy. High-throughput screens of 640 kinase inhibitors were conducted against cells isolated from mouse spines in the PDX model and human fetal neural stem cells to reveal compounds that targeted these treatment-refractory, metastatic cells, whilst sparing healthy cells. Blood-brain barrier permeability assays and additional in vitro experimentation helped select top candidates for in vivo studies. RESULTS Recurrent Group 3 MB PDX spine cells were therapeutically vulnerable to a selective checkpoint kinase 1 (CHK1) inhibitor and small molecular inhibitor of platelet-derived growth factor receptor beta (PDGFRβ). Inhibitor-treated cells showed a significant reduction in MB stem cell properties associated with treatment failure. Mice also demonstrated survival advantage when treated with a CHK1 inhibitor ex vivo. CONCLUSION We identified CHK1 and PDGFRβ inhibitors that effectively target MB cells fueling treatment-refractory metastases. With limited research on effective therapies for Group 3 MB metastatic recurrences, this work highlights promising therapeutic options to treat these aggressive tumors. Additional studies are warranted to investigate these inhibitors' mechanisms and recommended in vivo administration.
Collapse
Affiliation(s)
- Ashley A Adile
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
| | - David Bakhshinyan
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
| | - Yujin Suk
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
| | - David Uehling
- Ontario Institute for Cancer Research, MaRS Centre, Toronto, ON, M5G 0A3, Canada
| | - Mehakpreet Saini
- Ontario Institute for Cancer Research, MaRS Centre, Toronto, ON, M5G 0A3, Canada
| | - Ahmed Aman
- Ontario Institute for Cancer Research, MaRS Centre, Toronto, ON, M5G 0A3, Canada
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, Canada
| | - Jakob Magolan
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
| | - Minomi K Subapanditha
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
| | - Dillon McKenna
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
| | - Chirayu Chokshi
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
| | - Neil Savage
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
| | - Michelle M Kameda-Smith
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
| | - Chitra Venugopal
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
| | - Sheila K Singh
- Centre for Discovery in Cancer Research, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada.
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada.
- Department of Surgery, Faculty of Health Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada.
- Human Cancer Stem Cell Biology, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada.
- Neurosurgey, McMaster Children's Hospital, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada.
| |
Collapse
|
9
|
Martell E, Kuzmychova H, Kaul E, Senthil H, Chowdhury SR, Morrison LC, Fresnoza A, Zagozewski J, Venugopal C, Anderson CM, Singh SK, Banerji V, Werbowetski-Ogilvie TE, Sharif T. Metabolism-based targeting of MYC via MPC-SOD2 axis-mediated oxidation promotes cellular differentiation in group 3 medulloblastoma. Nat Commun 2023; 14:2502. [PMID: 37130865 PMCID: PMC10154337 DOI: 10.1038/s41467-023-38049-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 04/11/2023] [Indexed: 05/04/2023] Open
Abstract
Group 3 medulloblastoma (G3 MB) carries the worst prognosis of all MB subgroups. MYC oncoprotein is elevated in G3 MB tumors; however, the mechanisms that support MYC abundance remain unclear. Using metabolic and mechanistic profiling, we pinpoint a role for mitochondrial metabolism in regulating MYC. Complex-I inhibition decreases MYC abundance in G3 MB, attenuates the expression of MYC-downstream targets, induces differentiation, and prolongs male animal survival. Mechanistically, complex-I inhibition increases inactivating acetylation of antioxidant enzyme SOD2 at K68 and K122, triggering the accumulation of mitochondrial reactive oxygen species that promotes MYC oxidation and degradation in a mitochondrial pyruvate carrier (MPC)-dependent manner. MPC inhibition blocks the acetylation of SOD2 and oxidation of MYC, restoring MYC abundance and self-renewal capacity in G3 MB cells following complex-I inhibition. Identification of this MPC-SOD2 signaling axis reveals a role for metabolism in regulating MYC protein abundance that has clinical implications for treating G3 MB.
Collapse
Affiliation(s)
- Emma Martell
- Department of Pathology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Helgi Kuzmychova
- Department of Pathology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Esha Kaul
- Faculty of Science, University of Manitoba, Winnipeg, MB, Canada
| | - Harshal Senthil
- Department of Pathology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | | | - Ludivine Coudière Morrison
- Department of Biochemistry and Medical Genetics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Agnes Fresnoza
- Central Animal Care Services, University of Manitoba, Winnipeg, MB, Canada
| | - Jamie Zagozewski
- Department of Biochemistry and Medical Genetics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Chitra Venugopal
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Chris M Anderson
- Neuroscience Research Program, Kleysen Institute for Advanced Medicine, Health Sciences Centre, Winnipeg, MB, Canada
- Department of Pharmacology and Therapeutics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Sheila K Singh
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Versha Banerji
- CancerCare Manitoba, Winnipeg, MB, Canada
- Department of Biochemistry and Medical Genetics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
- Department of Internal Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
- Department of Medical Oncology and Hematology, CancerCare Manitoba, Winnipeg, MB, Canada
| | - Tamra E Werbowetski-Ogilvie
- Department of Biochemistry and Medical Genetics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
- CancerCare Manitoba, Winnipeg, MB, Canada
| | - Tanveer Sharif
- Department of Pathology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.
- CancerCare Manitoba, Winnipeg, MB, Canada.
| |
Collapse
|
10
|
Savage N, Zemp FJ, Mikolajewicz N, Han H, Venugopal C, Chokshi C, Tatari N, Kislinger T, Moffat J, Mahoney D, Singh SK. Abstract 1154: Investigating the functional role of GPNMB in glioblastoma and the tumor immune microenvironment and its targeted elimination using CAR-Ts. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-1154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Glycoprotein nonmetastatic melanoma protein B (GPNMB) is known to be active in the extracellular matrix of glioblastoma and has been identified as a promising immunotherapy target for both tumor cells and immunosuppressive macrophages.
Methods: Immunohistochemistry was performed on patient derived xenograft (PDX) brains and tissue samples of 16 patient matched primary/recurrent GBMs as well as 23 normal organ tissues. Whole cell proteomics was performed on 43 matched primary/recurrent GBM samples. Flow cytometry measured surface expression levels of GPNMB to confirm CAR-T accessibility. CRISPR/Cas9 was used to eliminate expression in GBM lines to measure proliferation and mouse survival times. GPNMB knockout clones were generated in GL261 and engrafted in immunocompetent mice to examine single cell transcriptomes using sciRNAseq at endpoint. A second-generation CAR-T was developed to target GPNMB-expressing populations, and efficacy was interrogated using standard in vitro assays and GBM PDX models.
Results: The absence of GPNMB throughout most normal tissues validates the rationale of administering CAR-Ts as a safe modality for patients. GPNMB detected in residual tumors of PDX models treated orthotopically with CD133 CAR-Ts revealed it as a targetable subpopulation of GBM cells and a rational co-target alongside CD133 in the heterogeneous tumor. Tissue microarrays and whole cell proteomics found GPNMB to be upregulated in recurrent GBMs compared to primary (p=0.0349 and p=0.0033 respectively) while being absent in normal tissues. Single cell sequencing data of patient GBMs revealed GPNMB was also highly expressed in tumor-associated macrophages. Eliminating GPNMB in GBM cell lines decreased proliferation (P<0.001) and prolonged survival times in all mouse models (P<0.01) indicating its functional relevance. GPNMB knockout clones displayed downregulation of hallmark signalling pathways of GBM such as PDGFR, TGF-beta, Integrins and Stats, as well as decreased innate/adaptive immune activation. CAR-T cytotoxicity and activation was observed in vitro and in vivo resulting in decreased tumor burden (P<0.001) and increased survival times (P<0.001). Ultimately a CD133+ population was observed in residual tumors of GPNMB CAR-T treated mice at endpoint and surface expression of CD133 and GPNMB revealed co-expression and distinct populations.
Conclusions: We show GPNMB influences tumor-intrinsic biology of GBM and is also active in macrophages in the recurrent GBM immune microenvironment. By targeting GPNMB along with CD133, combinatorial therapeutic regimens could target both the cancer stem cell hierarchy and its supportive niche. Administration of both CAR-T cell therapies to humanized mice engrafted with patient-derived GBMs will provide better cytotoxic coverage and potentially provide more durable therapeutic efficacy for GBM patients.
Citation Format: Neil Savage, Franz J. Zemp, Nick Mikolajewicz, Hong Han, Chitra Venugopal, Chirayu Chokshi, Nazanin Tatari, Thomas Kislinger, Jason Moffat, Doug Mahoney, Sheila K. Singh. Investigating the functional role of GPNMB in glioblastoma and the tumor immune microenvironment and its targeted elimination using CAR-Ts [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 1154.
Collapse
Affiliation(s)
- Neil Savage
- 1McMaster University, Hamilton, Ontario, Canada
| | | | | | - Hong Han
- 1McMaster University, Hamilton, Ontario, Canada
| | | | | | | | | | - Jason Moffat
- 3University of Toronto, Toronto, Ontario, Canada
| | - Doug Mahoney
- 2University of Calgary, Calgary, Alberta, Canada
| | | |
Collapse
|
11
|
Kieliszek AM, Mobilio D, Bassey-Archibong BI, Johnson J, Aghaei N, Gwynne W, McKenna D, Subapanditha MK, Venugopal C, Magolan J, Singh SK. Abstract 2474: Uncovering a new therapeutic vulnerability for preventing brain metastases. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-2474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
INTRO: Patients with brain metastases (BM) face a 90% mortality rate within one year of their diagnosis and they lack targeted therapeutic options, particularly preventative or interceptional ones.
METHODS: The Singh lab has generated a large in-house biobank of patient-derived BM cell lines that are established from patient-derived BM from primary lung and breast cancers and melanoma. We use these BM cell lines to generate murine orthotopic xenograft models of BM and interrogate the biological processes that lead to BM. These models have successfully recapitulated all the stages of their respective metastatic cascades and allowed characterization of a “premetastatic” population of BM cells that have just seeded the brains of mice before forming mature, clinically detectable tumors. Pre-metastatic cell populations are impossible to detect in human patients but present a therapeutic window wherein metastasizing cells can be targeted and eradicated before establishing clinically detectable and difficult to treat brain tumors.
RESULTS: Targeting premetastatic BM cells is a feasible interceptional strategy to block BM, but druggable targets are still very limited. Here, we applied RNA sequencing of premetastatic BM cells to reveal a unique deregulated transcriptomic profile that is specific to premetastatic cells regardless of primary tumor origin. Subsequent Connectivity Map analysis revealed compounds that we biologically characterized in vitro for selective anti-BMIC phenotypes. This effort led us to identify a tool compound that exhibits anti-BM activity in vitro, while remaining ineffective against normal brain cell controls. Follow up preclinical studies showed that treatment with this tool compound reduces the tumor burden of mice compared to placebo, while providing a significant survival advantage. Mass spectrometry-based metabolomics and CRISPR knock-out studies directly validated our tool compound’s target, Target X, as a targetable therapeutic vulnerability in BM, where pharmacological and genetic perturbation of Target X attenuates BM cell proliferation both in vitro and in vivo. We have now begun a large-scale medicinal chemistry campaign to develop a novel, brain penetrant Target X-inhibitor with a drug-like pre-clinical profile validated by our in vivo experimental models. This advanced drug candidate will be ready for later stage preclinical development and subsequent clinical development.
CONCLUSION: This potential first-in-class anti-metastatic therapy may provide an alternative interceptional treatment strategy for patients experiencing BM that are otherwise limited to palliation. Our work provides a new model for target discovery and validation to develop more effective preventative therapeutic strategies for patients with metastatic disease.
Citation Format: Agata M. Kieliszek, Daniel Mobilio, Blessing I. Bassey-Archibong, Jarrod Johnson, Nikoo Aghaei, William Gwynne, Dillon McKenna, Minomi K. Subapanditha, Chitra Venugopal, Jakob Magolan, Sheila K. Singh. Uncovering a new therapeutic vulnerability for preventing brain metastases [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 2474.
Collapse
|
12
|
Bassey-Archibong BI, Rajendra Chokshi C, Aghaei N, Kieliszek AM, Tatari N, McKenna D, Singh M, Kalpana Subapanditha M, Parmar A, Mobilio D, Savage N, Lam F, Tokar T, Provias J, Lu Y, Chafe SC, Swanton C, Hynds RE, Venugopal C, Singh SK. An HLA-G/SPAG9/STAT3 axis promotes brain metastases. Proc Natl Acad Sci U S A 2023; 120:e2205247120. [PMID: 36780531 PMCID: PMC9974476 DOI: 10.1073/pnas.2205247120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 09/18/2022] [Indexed: 02/15/2023] Open
Abstract
Brain metastases (BM) are the most common brain neoplasm in adults. Current BM therapies still offer limited efficacy and reduced survival outcomes, emphasizing the need for a better understanding of the disease. Herein, we analyzed the transcriptional profile of brain metastasis initiating cells (BMICs) at two distinct stages of the brain metastatic cascade-the "premetastatic" or early stage when they first colonize the brain and the established macrometastatic stage. RNA sequencing was used to obtain the transcriptional profiles of premetastatic and macrometastatic (non-premetastatic) lung, breast, and melanoma BMICs. We identified that lung, breast, and melanoma premetastatic BMICs share a common transcriptomic signature that is distinct from their non-premetastatic counterparts. Importantly, we show that premetastatic BMICs exhibit increased expression of HLA-G, which we further demonstrate functions in an HLA-G/SPAG9/STAT3 axis to promote the establishment of brain metastatic lesions. Our findings suggest that unraveling the molecular landscape of premetastatic BMICs allows for the identification of clinically relevant targets that can possibly inform the development of preventive and/or more efficacious BM therapies.
Collapse
Affiliation(s)
| | - Chirayu Rajendra Chokshi
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Nikoo Aghaei
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Agata Monika Kieliszek
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Nazanin Tatari
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Dillon McKenna
- Department of Surgery, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Mohini Singh
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | | | - Arun Parmar
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Daniel Mobilio
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Neil Savage
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Fred Lam
- Department of Surgery, Division of Neurosurgery, McMaster University Faculty of Health Sciences, Hamilton General Hospital, Hamilton, ON, L8S 4K1, Canada
| | - Tomas Tokar
- Osteoarthritis Research Program, Division of Orthopedic Surgery, Schroeder Arthritis Institute, University Health Network, Toronto, ON, M5T 2S8, Canada
- Data Science Discovery Centre for Chronic Diseases, Krembil Research Institute, University Health Network, Toronto, ON, M5T 2S8, Canada
| | - John Provias
- Department of Anatomical Pathology (Neuropathology), Hamilton General Hospital, Hamilton, ON, L8L 2X2, Canada
- Department of Pathology and Molecular Medicine, Faculty of Health Sciences, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Yu Lu
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | | | - Charles Swanton
- The Cancer Research UK (CRUK) Lung Cancer Centre of Excellence, University College London (UCL) Cancer Institute, University College London, London, WC1E 6DD, United Kingdom
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, NW1 1AT, United Kingdom
| | - Robert Edward Hynds
- The Cancer Research UK (CRUK) Lung Cancer Centre of Excellence, University College London (UCL) Cancer Institute, University College London, London, WC1E 6DD, United Kingdom
- Cancer Evolution and Genome Instability Laboratory, The Francis Crick Institute, London, NW1 1AT, United Kingdom
| | - Chitra Venugopal
- Department of Surgery, McMaster University, Hamilton, ON, L8S 4K1, Canada
| | - Sheila Kumari Singh
- Department of Surgery, McMaster University, Hamilton, ON, L8S 4K1, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8S 4K1, Canada
| |
Collapse
|
13
|
Kameda-Smith MM, Zhu H, Luo EC, Suk Y, Xella A, Yee B, Chokshi C, Xing S, Tan F, Fox RG, Adile AA, Bakhshinyan D, Brown K, Gwynne WD, Subapanditha M, Miletic P, Picard D, Burns I, Moffat J, Paruch K, Fleming A, Hope K, Provias JP, Remke M, Lu Y, Reya T, Venugopal C, Reimand J, Wechsler-Reya RJ, Yeo GW, Singh SK. Author Correction: Characterization of an RNA binding protein interactome reveals a context-specific post-transcriptional landscape of MYC-amplified medulloblastoma. Nat Commun 2023; 14:136. [PMID: 36627300 PMCID: PMC9832149 DOI: 10.1038/s41467-023-35816-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Affiliation(s)
- Michelle M. Kameda-Smith
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON Canada
| | - Helen Zhu
- grid.419890.d0000 0004 0626 690XComputational Biology Program, Ontario Institute for Cancer Research, Toronto, ON Canada ,grid.17063.330000 0001 2157 2938Department of Medical Biophysics, University of Toronto, Toronto, ON Canada ,grid.231844.80000 0004 0474 0428University Health Network, Toronto, ON Canada ,grid.494618.6Vector Institute Toronto, Toronto, ON Canada
| | - En-Ching Luo
- grid.266100.30000 0001 2107 4242Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA USA ,grid.266100.30000 0001 2107 4242Stem Cell Program, University of California San Diego, La Jolla, CA USA ,grid.468218.10000 0004 5913 3393Sanford Consortium for Regenerative Medicine, La Jolla, CA USA
| | - Yujin Suk
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Michael G DeGroote School of Medicine, McMaster University, Hamilton, ON Canada
| | - Agata Xella
- grid.479509.60000 0001 0163 8573Tumor Initiation and Maintenance Program, National Cancer Institute-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA USA
| | - Brian Yee
- grid.266100.30000 0001 2107 4242Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA USA ,grid.266100.30000 0001 2107 4242Stem Cell Program, University of California San Diego, La Jolla, CA USA ,grid.468218.10000 0004 5913 3393Sanford Consortium for Regenerative Medicine, La Jolla, CA USA
| | - Chirayu Chokshi
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Sansi Xing
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Frederick Tan
- grid.266100.30000 0001 2107 4242Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA USA ,grid.266100.30000 0001 2107 4242Stem Cell Program, University of California San Diego, La Jolla, CA USA ,grid.468218.10000 0004 5913 3393Sanford Consortium for Regenerative Medicine, La Jolla, CA USA
| | - Raymond G. Fox
- grid.266100.30000 0001 2107 4242Departments of Pharmacology and Medicine, University of California San Diego School of Medicine, Sanford Consortium for Regenerative Medicine, La Jolla, CA USA
| | - Ashley A. Adile
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - David Bakhshinyan
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Kevin Brown
- grid.17063.330000 0001 2157 2938Donnelly Centre, Department of Molecular Genetics, University of Toronto, Toronto, ON Canada
| | - William D. Gwynne
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Minomi Subapanditha
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada
| | - Petar Miletic
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Daniel Picard
- grid.14778.3d0000 0000 8922 7789Department of Pediatric Oncology, Hematology, and Clinical Immunology, Medical Faculty, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Ian Burns
- grid.25073.330000 0004 1936 8227Michael G DeGroote School of Medicine, McMaster University, Hamilton, ON Canada
| | - Jason Moffat
- grid.17063.330000 0001 2157 2938Donnelly Centre, Department of Molecular Genetics, University of Toronto, Toronto, ON Canada
| | - Kamil Paruch
- grid.10267.320000 0001 2194 0956Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic ,grid.483343.bInternational Clinical Research Center, St. Anne’s University Hospital in Brno, 602 00 Brno, Czech Republic
| | - Adam Fleming
- grid.25073.330000 0004 1936 8227Departments of Pediatrics, Hematology and Oncology Division, McMaster University, Hamilton, ON Canada
| | - Kristin Hope
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - John P. Provias
- grid.25073.330000 0004 1936 8227Department of Neuropathology, McMaster University, Hamilton, ON Canada
| | - Marc Remke
- grid.14778.3d0000 0000 8922 7789Department of Pediatric Oncology, Hematology, and Clinical Immunology, Medical Faculty, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Yu Lu
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Tannishtha Reya
- grid.266100.30000 0001 2107 4242Departments of Pharmacology and Medicine, University of California San Diego School of Medicine, Sanford Consortium for Regenerative Medicine, La Jolla, CA USA ,grid.239585.00000 0001 2285 2675Present Address: Herbert Irving Comprehensive Cancer Center, Department of Physiology and Cellular Biophysics, Columbia University Medical Center, New York, NY USA
| | - Chitra Venugopal
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON Canada
| | - Jüri Reimand
- grid.419890.d0000 0004 0626 690XComputational Biology Program, Ontario Institute for Cancer Research, Toronto, ON Canada ,grid.17063.330000 0001 2157 2938Department of Medical Biophysics, University of Toronto, Toronto, ON Canada ,grid.17063.330000 0001 2157 2938Department of Molecular Genetics, University of Toronto, Toronto, ON Canada
| | - Robert J. Wechsler-Reya
- grid.479509.60000 0001 0163 8573Tumor Initiation and Maintenance Program, National Cancer Institute-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA USA ,grid.239585.00000 0001 2285 2675Present Address: Herbert Irving Comprehensive Cancer Center, Department of Physiology and Cellular Biophysics, Columbia University Medical Center, New York, NY USA
| | - Gene W. Yeo
- grid.266100.30000 0001 2107 4242Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA USA ,grid.266100.30000 0001 2107 4242Stem Cell Program, University of California San Diego, La Jolla, CA USA ,grid.468218.10000 0004 5913 3393Sanford Consortium for Regenerative Medicine, La Jolla, CA USA
| | - Sheila K. Singh
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Pediatrics, McMaster University, Hamilton, ON Canada
| |
Collapse
|
14
|
Gwynne WD, Suk Y, Custers S, Mikolajewicz N, Chan JK, Zador Z, Chafe SC, Zhai K, Escudero L, Zhang C, Zaslaver O, Chokshi C, Shaikh MV, Bakhshinyan D, Burns I, Chaudhry I, Nachmani O, Mobilio D, Maich WT, Mero P, Brown KR, Quaile AT, Venugopal C, Moffat J, Montenegro-Burke JR, Singh SK. Cancer-selective metabolic vulnerabilities in MYC-amplified medulloblastoma. Cancer Cell 2022; 40:1488-1502.e7. [PMID: 36368321 DOI: 10.1016/j.ccell.2022.10.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 09/09/2022] [Accepted: 10/06/2022] [Indexed: 11/12/2022]
Abstract
MYC-driven medulloblastoma (MB) is an aggressive pediatric brain tumor characterized by therapy resistance and disease recurrence. Here, we integrated data from unbiased genetic screening and metabolomic profiling to identify multiple cancer-selective metabolic vulnerabilities in MYC-driven MB tumor cells, which are amenable to therapeutic targeting. Among these targets, dihydroorotate dehydrogenase (DHODH), an enzyme that catalyzes de novo pyrimidine biosynthesis, emerged as a favorable candidate for therapeutic targeting. Mechanistically, DHODH inhibition acts on target, leading to uridine metabolite scarcity and hyperlipidemia, accompanied by reduced protein O-GlcNAcylation and c-Myc degradation. Pyrimidine starvation evokes a metabolic stress response that leads to cell-cycle arrest and apoptosis. We further show that an orally available small-molecule DHODH inhibitor demonstrates potent mono-therapeutic efficacy against patient-derived MB xenografts in vivo. The reprogramming of pyrimidine metabolism in MYC-driven medulloblastoma represents an unappreciated therapeutic strategy and a potential new class of treatments with stronger cancer selectivity and fewer neurotoxic sequelae.
Collapse
Affiliation(s)
- William D Gwynne
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Yujin Suk
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Michael G DeGroote School of Medicine, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Stefan Custers
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Nicholas Mikolajewicz
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada
| | - Jeremy K Chan
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Zsolt Zador
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Shawn C Chafe
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Kui Zhai
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Laura Escudero
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Cunjie Zhang
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Olga Zaslaver
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Chirayu Chokshi
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Muhammad Vaseem Shaikh
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - David Bakhshinyan
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Ian Burns
- Michael G DeGroote School of Medicine, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Iqra Chaudhry
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Omri Nachmani
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada
| | - Daniel Mobilio
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - William T Maich
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Patricia Mero
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Kevin R Brown
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada
| | - Andrew T Quaile
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Jason Moffat
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Institute for Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - J Rafael Montenegro-Burke
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada.
| | - Sheila K Singh
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada.
| |
Collapse
|
15
|
Kameda-Smith MM, Zhu H, Luo EC, Suk Y, Xella A, Yee B, Chokshi C, Xing S, Tan F, Fox RG, Adile AA, Bakhshinyan D, Brown K, Gwynne WD, Subapanditha M, Miletic P, Picard D, Burns I, Moffat J, Paruch K, Fleming A, Hope K, Provias JP, Remke M, Lu Y, Reya T, Venugopal C, Reimand J, Wechsler-Reya RJ, Yeo GW, Singh SK. Characterization of an RNA binding protein interactome reveals a context-specific post-transcriptional landscape of MYC-amplified medulloblastoma. Nat Commun 2022; 13:7506. [PMID: 36473869 PMCID: PMC9726987 DOI: 10.1038/s41467-022-35118-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 11/18/2022] [Indexed: 12/12/2022] Open
Abstract
Pediatric medulloblastoma (MB) is the most common solid malignant brain neoplasm, with Group 3 (G3) MB representing the most aggressive subgroup. MYC amplification is an independent poor prognostic factor in G3 MB, however, therapeutic targeting of the MYC pathway remains limited and alternative therapies for G3 MB are urgently needed. Here we show that the RNA-binding protein, Musashi-1 (MSI1) is an essential mediator of G3 MB in both MYC-overexpressing mouse models and patient-derived xenografts. MSI1 inhibition abrogates tumor initiation and significantly prolongs survival in both models. We identify binding targets of MSI1 in normal neural and G3 MB stem cells and then cross referenced these data with unbiased large-scale screens at the transcriptomic, translatomic and proteomic levels to systematically dissect its functional role. Comparative integrative multi-omic analyses of these large datasets reveal cancer-selective MSI1-bound targets sharing multiple MYC associated pathways, providing a valuable resource for context-specific therapeutic targeting of G3 MB.
Collapse
Affiliation(s)
- Michelle M. Kameda-Smith
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON Canada
| | - Helen Zhu
- grid.419890.d0000 0004 0626 690XComputational Biology Program, Ontario Institute for Cancer Research, Toronto, Canada ,grid.17063.330000 0001 2157 2938Department of Medical Biophysics, University of Toronto, Toronto, Canada ,grid.231844.80000 0004 0474 0428University Health Network, Toronto, ON Canada ,grid.494618.6Vector Institute Toronto, Toronto, ON Canada
| | - En-Ching Luo
- grid.266100.30000 0001 2107 4242Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA USA ,grid.266100.30000 0001 2107 4242Stem Cell Program, University of California San Diego, La Jolla, CA USA ,grid.468218.10000 0004 5913 3393Sanford Consortium for Regenerative Medicine, La Jolla, CA USA
| | - Yujin Suk
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Michael G DeGroote School of Medicine, McMaster University, Hamilton, Canada
| | - Agata Xella
- grid.479509.60000 0001 0163 8573Tumor Initiation and Maintenance Program, National Cancer Institute-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA USA
| | - Brian Yee
- grid.266100.30000 0001 2107 4242Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA USA ,grid.266100.30000 0001 2107 4242Stem Cell Program, University of California San Diego, La Jolla, CA USA ,grid.468218.10000 0004 5913 3393Sanford Consortium for Regenerative Medicine, La Jolla, CA USA
| | - Chirayu Chokshi
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Sansi Xing
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Frederick Tan
- grid.266100.30000 0001 2107 4242Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA USA ,grid.266100.30000 0001 2107 4242Stem Cell Program, University of California San Diego, La Jolla, CA USA ,grid.468218.10000 0004 5913 3393Sanford Consortium for Regenerative Medicine, La Jolla, CA USA
| | - Raymond G. Fox
- grid.266100.30000 0001 2107 4242Departments of Pharmacology and Medicine, University of California San Diego School of Medicine, Sanford Consortium for Regenerative Medicine, La Jolla, CA USA
| | - Ashley A. Adile
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - David Bakhshinyan
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Kevin Brown
- grid.17063.330000 0001 2157 2938Donnelly Centre, Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - William D. Gwynne
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Minomi Subapanditha
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada
| | - Petar Miletic
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Daniel Picard
- grid.14778.3d0000 0000 8922 7789Department of Pediatric Oncology, Hematology, and Clinical Immunology, Medical Faculty, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Ian Burns
- grid.25073.330000 0004 1936 8227Michael G DeGroote School of Medicine, McMaster University, Hamilton, Canada
| | - Jason Moffat
- grid.17063.330000 0001 2157 2938Donnelly Centre, Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Kamil Paruch
- grid.10267.320000 0001 2194 0956Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic ,grid.483343.bInternational Clinical Research Center, St. Anne’s University Hospital in Brno, 602 00 Brno, Czech Republic
| | - Adam Fleming
- grid.25073.330000 0004 1936 8227McMaster University, Departments of Pediatrics, Hematology and Oncology Division, Hamilton, Canada
| | - Kristin Hope
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - John P. Provias
- grid.25073.330000 0004 1936 8227McMaster University, Departments of Neuropathology, Hamilton, Canada
| | - Marc Remke
- grid.14778.3d0000 0000 8922 7789Department of Pediatric Oncology, Hematology, and Clinical Immunology, Medical Faculty, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Yu Lu
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Tannishtha Reya
- grid.266100.30000 0001 2107 4242Departments of Pharmacology and Medicine, University of California San Diego School of Medicine, Sanford Consortium for Regenerative Medicine, La Jolla, CA USA ,grid.239585.00000 0001 2285 2675Present Address: Herbert Irving Comprehensive Cancer Center, Department of Physiology and Cellular Biophysics, Columbia University Medical Center, New York, NY USA
| | - Chitra Venugopal
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON Canada
| | - Jüri Reimand
- grid.419890.d0000 0004 0626 690XComputational Biology Program, Ontario Institute for Cancer Research, Toronto, Canada ,grid.17063.330000 0001 2157 2938Department of Medical Biophysics, University of Toronto, Toronto, Canada ,grid.17063.330000 0001 2157 2938Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Robert J. Wechsler-Reya
- grid.479509.60000 0001 0163 8573Tumor Initiation and Maintenance Program, National Cancer Institute-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA USA ,grid.239585.00000 0001 2285 2675Present Address: Herbert Irving Comprehensive Cancer Center, Department of Physiology and Cellular Biophysics, Columbia University Medical Center, New York, NY USA
| | - Gene W. Yeo
- grid.266100.30000 0001 2107 4242Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA USA ,grid.266100.30000 0001 2107 4242Stem Cell Program, University of California San Diego, La Jolla, CA USA ,grid.468218.10000 0004 5913 3393Sanford Consortium for Regenerative Medicine, La Jolla, CA USA
| | - Sheila K. Singh
- grid.25073.330000 0004 1936 8227Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227McMaster University, Department of Pediatrics, Hamilton, Canada
| |
Collapse
|
16
|
Tatari N, Khan S, Livingstone J, Zhai K, Mckenna D, Ignatchenko V, Chokshi C, Gwynne WD, Singh M, Revill S, Mikolajewicz N, Zhu C, Chan J, Hawkins C, Lu JQ, Provias JP, Ask K, Morrissy S, Brown S, Weiss T, Weller M, Han H, Greenspoon JN, Moffat J, Venugopal C, Boutros PC, Singh SK, Kislinger T. The proteomic landscape of glioblastoma recurrence reveals novel and targetable immunoregulatory drivers. Acta Neuropathol 2022; 144:1127-1142. [PMID: 36178522 PMCID: PMC10187978 DOI: 10.1007/s00401-022-02506-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 09/23/2022] [Accepted: 09/24/2022] [Indexed: 01/26/2023]
Abstract
Glioblastoma (GBM) is characterized by extensive cellular and genetic heterogeneity. Its initial presentation as primary disease (pGBM) has been subject to exhaustive molecular and cellular profiling. By contrast, our understanding of how GBM evolves to evade the selective pressure of therapy is starkly limited. The proteomic landscape of recurrent GBM (rGBM), which is refractory to most treatments used for pGBM, are poorly known. We, therefore, quantified the transcriptome and proteome of 134 patient-derived pGBM and rGBM samples, including 40 matched pGBM-rGBM pairs. GBM subtypes transition from pGBM to rGBM towards a preferentially mesenchymal state at recurrence, consistent with the increasingly invasive nature of rGBM. We identified immune regulatory/suppressive genes as important drivers of rGBM and in particular 2-5-oligoadenylate synthase 2 (OAS2) as an essential gene in recurrent disease. Our data identify a new class of therapeutic targets that emerge from the adaptive response of pGBM to therapy, emerging specifically in recurrent disease and may provide new therapeutic opportunities absent at pGBM diagnosis.
Collapse
Affiliation(s)
- Nazanin Tatari
- Centre for Discovery in Cancer Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Shahbaz Khan
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Julie Livingstone
- Department of Human Genetics and Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA, USA
| | - Kui Zhai
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Dillon Mckenna
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | | | - Chirayu Chokshi
- Centre for Discovery in Cancer Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - William D Gwynne
- Centre for Discovery in Cancer Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Manoj Singh
- Centre for Discovery in Cancer Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada.,Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Spencer Revill
- McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Nicholas Mikolajewicz
- Department of Molecular Genetics - Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Chenghao Zhu
- Department of Human Genetics and Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA, USA
| | - Jennifer Chan
- Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB, Canada
| | - Cynthia Hawkins
- Department of Pediatric Laboratory Medicine, Hospital for Sick Children, Toronto, Canada
| | - Jian-Qiang Lu
- Department of Pathology, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - John P Provias
- Department of Pathology, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Kjetil Ask
- McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Sorana Morrissy
- Department of Biochemistry and Molecular Biology, The University of Calgary, Calgary, AB, Canada
| | - Samuel Brown
- Department of Biochemistry and Molecular Biology, The University of Calgary, Calgary, AB, Canada
| | - Tobias Weiss
- Department of Neurology and Clinical Neuroscience Center, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Michael Weller
- Department of Neurology and Clinical Neuroscience Center, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Hong Han
- Department of Molecular Genetics - Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Jeffrey N Greenspoon
- Juravinski Cancer Center, Department of Oncology, Radiation Oncology, McMaster University, Hamilton, ON, Canada
| | - Jason Moffat
- Department of Molecular Genetics - Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Paul C Boutros
- Department of Human Genetics and Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA, USA. .,Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.
| | - Sheila K Singh
- Centre for Discovery in Cancer Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada. .,Department of Surgery, McMaster University, Hamilton, ON, Canada.
| | - Thomas Kislinger
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada. .,Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.
| |
Collapse
|
17
|
Kieliszek A, Mobilio D, Bassey-Archibong B, Johnson J, Venugopal C, Magolan J, Singh S. DDDR-03. DEVELOPMENT OF NOVEL ANTI-BRAIN METASTASIS INHIBITORS. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac209.368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
The current standard of care for (surgery and radiation) for brain metastases (BM) is inadequate as BM have a 90% mortality rate within one year of diagnosis, posing a large unmet clinical need. The Singh lab has generated a large in-house biobank of patient-derived BM cell lines that are established from BM patient tumor samples. We use these BM cell lines to generate murine orthotopic xenograft models of BM and interrogate the biological processes that lead to BM. These models have successfully recapitulated all the stages of their respective BM cascades and additionally captured a “premetastatic” population of BM cells that have just seeded the brains of mice before forming mature, clinically detectable tumors. Pre-metastatic cell populations are impossible to detect in human patients but represent a therapeutic window wherein metastasizing cells can be targeted and eradicated before establishing clinically detectable and difficult to treat brain tumors. RNA sequencing of pre-metastatic BM cells revealed a unique deregulated transcriptomic profile that is specific to pre-metastatic cells despite the tumor of origin. Connectivity Map analysis was applied to the gene expression signatures of pre-metastatic BM cells to identity a compound (Drug A) which selectively inhibits BM cell proliferation but is not blood-brain barrier (BBB) penetrant and has not been previously considered in the context of brain metastasis. We synthesized a BBB-penetrant analogue of Drug A and found, using our patient-derived xenograft (PDX) models, that it increased survival benefit relative to both placebo and Drug A. Beginning with this promising scaffold, we will conduct structure-activity hypothesis-driven medicinal chemistry campaigns to optimize this scaffold for brain permeation while maintaining selective anti-BM activity. Development of novel small molecules that target premetastatic BM cells could slow or prevent the formation of BM and dramatically improve the prognosis of at-risk cancer patients.
Collapse
|
18
|
Zador Z, Mikolajewicz N, Han H, Voisin M, Venugopal C, Chokshi C, Maich W, Jason M, Zadeh G, Singh S. MODL-05. DISCOVERY OF DYNAMIC MINIMAL RESIDUAL DISEASE STATES IN ADULT GLIOBLASTOMA USING SINGLE CELL TECHNOLOGY. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac209.1133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
Persister states are proposed oncogenic substrates of disease recurrence in cancer. Recent concepts suggest persisters may occur in dynamic states of the cell cycle (such as cycling and non-cycling states). We therefore investigated biological programs at the post-treatment minimal residual disease (MRD) state following standard chemoradiotherapy in patient-derived xenograft models of GBM. Our analysis of single cell RNA sequencing (scRNA-seq) data from 2704 tumor cells (929 cells post treatment, 1775 matched controls) yielded a cellular profile for non-cycling and cycling persister states. We validated these programs in 3 independent scRNA-seq datasets of human glioblastoma specimens consisting of over 16,000 cells from various genetic backgrounds, including an internal two patient-matched primary and recurrent GBM pairs with over 13,000 cells. Finally, we determined that clones identified based on large scale chromosomal rearrangements converge on previously identified persister states including the dynamic states discovered in our study. Our results provide new evidence towards dynamic persister states in glioblastoma, further analysis of these dynamic states is critical to targeting this incurable disease.
Collapse
Affiliation(s)
| | | | - Hong Han
- University of Toronto , Toronto , Canada
| | | | | | | | | | | | - Gelareh Zadeh
- Princess Margaret Cancer Center and MacFeeters-Hamilton Center for Neuro-Oncology Research, University Health Network, Wilkins Family Chair in Brain Tumor Research , Toronto , Canada
| | | |
Collapse
|
19
|
Zador Z, Mikolajewicz N, Han H, Chokshi C, Venugopal C, Maich W, Jason M, Singh S. EPCO-07. NON-GENOMIC DETERMINANTS OF TUMOR CELL PHENOTYPES IN ADULT GLIOBLASTOMA. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac209.442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
Non-genomic determinates of oncogenic cellular phenotypes is an emerging concept that expanded our model of tumor hallmarks. We hypothesized that oncogenic programs in adult glioblastoma (GBM) such as angiogenesis, proliferation, DNA repair, epithelial to mesenchymal transition and quiescent states are achieved independently of mutational background or clonal linage. We therefore explored the assortations of large-scale chromosomal rearrangements and canonical driver mutations with oncogenic programs in single cell RNA sequencing (scRNA-seq) of over 3000 tumor cells in 4 adult GBM using open data. We find recurring patterns where tumor cells from diverse mutational background and clonal linage converge upon oncogenic tumor phenotypes. We validate this observation in 9 tumors comprising over 16,000 cells and in xenograft animal models of GBM pre- and post temozolamide treatment. We finally explore the epigenetic associations of oncogenic phenotypes via computational label transfer from scRNA-seq to chromatic accessibility data from single cell ATAC sequencing (scATAC-seq). We find open genomic regions associated with canonical regulators, such as the highly oncogenic mesenchymal phenotype driven by TWIST1. Our results suggest a paradigm shift towards non-genetic determinants of oncogenic phenotypes in GBM complementing the conventional concept of cancer clonal evolution.
Collapse
Affiliation(s)
| | | | - Hong Han
- University of Toronto , Toronto , Canada
| | | | | | | | | | | |
Collapse
|
20
|
Bakhshinyan D, Suk Y, Kuhlman L, Adile A, Ignatchenko V, Gwynne W, Custers S, Macklin A, Venugopal C, Kislinger T, Singh S. EXTH-81. ITGA5 IS A NOVEL IMMUNOTHERAPEUTIC TARGET AGAINST TREATMENT REFRACTORY MEDULLOBLASTOMA. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac209.879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
Medulloblastoma (MB) is the most common type of malignant pediatric brain cancer. Current standard of care (SOC) involves maximal safe resection and neuraxis radiotherapy and chemotherapy in individuals older than 3 years. To date, these cytotoxic SOC combined with craniospinal irradiation led to devastating neurocognitive and developmental deficits impacting quality of life for pediatric patients. The biological heterogeneity of MB is highlighted by the existence of four distinct molecular subgroups (WNT, SHH, Group 3, and Group 4). Group 3 and Group 4 have the poorest patient outcomes because of their aggressive, metastatic nature, and so often remain treatment refractory to SOC. Group 3 has a poor prognosis due to its high incidence of leptomeningeal spread and an overall survival rate of less than 50%. The cytotoxic nature and lack of response in specific subtypes to SOC underscores the urgent need for developing and translating novel treatment options including immunotherapies. In our earlier work, we have developed a therapy-adapted patient derived xenograft (PDX) model of the Group 3 MB as the tumor cells undergoes therapy in vitro and in vivo. N-glycocapture surfaceome profiling of the MB cells through this PDX model identified Integrin α5 (ITGA5) as one of the most differentially expressed targets found at recurrence when compared to engraftment and untreated timepoints. Through shRNA knockdown and small molecule inhibition, we identify ITGA5 expression marks a MB cell subpopulation with increased self-renewal ability both in vitro and in vivo. Access to recurrent MB (rMB) post-therapy allowed us to investigate the changes in the surfaceome of MB cells using proteomics profiling to identify promising rMB-specific targets for rational development of novel immunotherapies.
Collapse
Affiliation(s)
| | - Yujin Suk
- McMaster University, Hamilton , Ontario , Canada
| | | | - Ashley Adile
- McMaster University, Hamilton , Ontario , Canada
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Qazi MA, Salim SK, Brown KR, Mikolajewicz N, Savage N, Han H, Subapanditha MK, Bakhshinyan D, Nixon A, Vora P, Desmond K, Chokshi C, Singh M, Khoo A, Macklin A, Khan S, Tatari N, Winegarden N, Richards L, Pugh T, Bock N, Mansouri A, Venugopal C, Kislinger T, Goyal S, Moffat J, Singh SK. Characterization of the minimal residual disease state reveals distinct evolutionary trajectories of human glioblastoma. Cell Rep 2022; 40:111420. [PMID: 36170831 DOI: 10.1016/j.celrep.2022.111420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/15/2022] [Accepted: 09/02/2022] [Indexed: 11/25/2022] Open
Abstract
Recurrence of solid tumors renders patients vulnerable to advanced, treatment-refractory disease state with mutational and oncogenic landscape distinctive from initial diagnosis. Improving outcomes for recurrent cancers requires a better understanding of cell populations that expand from the post-therapy, minimal residual disease (MRD) state. We profile barcoded tumor stem cell populations through therapy at tumor initiation, MRD, and recurrence in our therapy-adapted, patient-derived xenograft models of glioblastoma (GBM). Tumors show distinct patterns of recurrence in which clonal populations exhibit either a pre-existing fitness advantage or an equipotency fitness acquired through therapy. Characterization of the MRD state by single-cell and bulk RNA sequencing reveals a tumor-intrinsic immunomodulatory signature with prognostic significance at the transcriptomic level and in proteomic analysis of cerebrospinal fluid (CSF) collected from patients with GBM. Our results provide insight into the innate and therapy-driven dynamics of human GBM and the prognostic value of interrogating the MRD state in solid cancers.
Collapse
Affiliation(s)
- Maleeha A Qazi
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Sabra K Salim
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Kevin R Brown
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Nicholas Mikolajewicz
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Neil Savage
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Hong Han
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Minomi K Subapanditha
- McMaster Immunology Research Centre, McMaster University, Hamilton, ON L8N 3Z5, Canada
| | - David Bakhshinyan
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Allison Nixon
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Parvez Vora
- Department of Surgery, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Kimberly Desmond
- Department of Psychology, Neuroscience, and Behaviour, McMaster University, Hamilton, ON L8S 4K1, Canada; Sunnybrook Research Institute, Physical Sciences Platform, Toronto, ON M4N 3M5, Canada
| | - Chirayu Chokshi
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Mohini Singh
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Amanda Khoo
- Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Andrew Macklin
- Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Shahbaz Khan
- Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Nazanin Tatari
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | | | | | - Trevor Pugh
- Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Nicholas Bock
- Department of Psychology, Neuroscience, and Behaviour, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Alireza Mansouri
- Department of Neurosurgery, Penn State Hershey Medical Center, Hershey, PA 17033, USA
| | - Chitra Venugopal
- Department of Surgery, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Thomas Kislinger
- Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada; Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Sidhartha Goyal
- Department of Physics, University of Toronto, Toronto, ON M5S 1A7, Canada
| | - Jason Moffat
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, ON M5S 3E1, Canada; Institute for Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada.
| | - Sheila K Singh
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada; Department of Surgery, McMaster University, Hamilton, ON L8S 4L8, Canada.
| |
Collapse
|
22
|
Abstract
Human neural stem cells (hNSCs) are a valuable tool in brain cancer research since they are used as a normal control for multiple assays, mainly pertaining to toxicity. Here, we present a protocol to safely and successfully derive and culture hNSCs in vitro from human embryonic brain tissue. We describe the steps to dissociate embryonic brain tissue and culture hNSCs, followed by the procedure to expand hNSCs. These cells can be used for downstream applications including RNA-seq and omics studies. For complete details on the use and execution of this protocol, please refer to Venugopal et al. (2012b), Bakhshinyan et al. (2019), and Venugopal et al. (2012a). Derivation and cryopreservation of hNSCs from human embryonic tissue Long-term culture and expansion of primary hNSC cells Feasible to generate up to 200 million human neural stem cells in 1 to 2 months Can be used for downstream applications such as RNAseq and omics techniques
Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
Collapse
Affiliation(s)
- Yujin Suk
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada; Michael G DeGroote School of Medicine, McMaster University, Hamilton, ON L8S 4L8, Canada.
| | - Agata Kieliszek
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Daniel Mobilio
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Sheila K Singh
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada; Department of Surgery, McMaster University, Hamilton, ON L8S 4L8, Canada.
| |
Collapse
|
23
|
Brakel B, Chokshi C, Rossotti M, Venugopal C, Salim S, Mobilio D, Chafe S, Henry K, Singh S. SYST-15 TARGETING AXONAL GUIDANCE WITH ANTI-ROBO1 CAR T CELLS: A NEW THERAPEUTIC STRATEGY FOR MALIGNANT BRAIN CANCER. Neurooncol Adv 2022. [DOI: 10.1093/noajnl/vdac078.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
No standardized treatments exist for patients with treatment-refractory brain metastasis, glioblastoma and other recurrent brain tumours. Given the aggressive nature of these diseases and difficulty in modelling tumour recurrence, minimal efforts have been made to design rational therapies against them. Neurodevelopmental pathways are often highjacked and go awry in the progression of these cancers. The roundabout guidance receptor 1 (ROBO1) protein is involved in axonal guidance during neurodevelopment, and we have shown that aberrant ROBO signalling promotes invasiveness and tumour growth in glioblastoma. Likewise, this signalling may contribute to the metastasis and growth of metastatic brain tumours, making the ROBO1-expressing tumour cell population an attractive and functionally relevant therapeutic target. Here, we present that ROBO1 is highly expressed on the surface of malignant and treatment-refractory brain tumour initiating cells (BTICs), prompting the development of an anti-ROBO1 CAR-T cell therapy. Using the binding region of a single-domain antibody targeting ROBO1, we developed second-generation anti-ROBO1 CAR-T cells specific and effective against malignant brain cancers, upregulating markers of activation and degranulation upon exposure to ROBO1-expressing BTICs. Additionally, orthotopic patient-derived xenograft models of malignant brain tumours treated with anti-ROBO1 CAR-T cells had a reduced tumour burden and prolonged survival, demonstrating therapeutic potential for treating brain malignancies.
Collapse
Affiliation(s)
- Benjamin Brakel
- Department of Biochemistry and Biomedical Sciences, McMaster University , Hamilton , Canada
| | - Chirayu Chokshi
- Department of Biochemistry and Biomedical Sciences, McMaster University , Hamilton , Canada
| | - Martin Rossotti
- Human Health Therapeutics Research Centre, Life Sciences Division, National Research Council Canada , Ottawa , Canada
| | - Chitra Venugopal
- Department of Surgery, Faculty of Health Sciences, McMaster University , Hamilton , Canada
| | - Sabra Salim
- Department of Biochemistry and Biomedical Sciences, McMaster University , Hamilton , Canada
| | - Daniel Mobilio
- Department of Biochemistry and Biomedical Sciences, McMaster University , Hamilton , Canada
| | - Shawn Chafe
- Department of Biochemistry and Biomedical Sciences, McMaster University , Hamilton , Canada
| | - Kevin Henry
- Human Health Therapeutics Research Centre, Life Sciences Division, National Research Council Canada , Ottawa , Canada
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa , Ottawa , Canada
| | - Sheila Singh
- Department of Biochemistry and Biomedical Sciences, McMaster University , Hamilton , Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University , Hamilton , Canada
| |
Collapse
|
24
|
Kieliszek A, Mobilio D, Bassey-Archibong B, Johnson J, McKenna D, Venugopal C, Magolan J, Singh S. BSCI-13 DEVELOPMENT OF NOVEL ANTI-BRAIN METASTASIS INHIBITORS. Neurooncol Adv 2022. [DOI: 10.1093/noajnl/vdac078.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
The current standard of care (surgery and radiation) for brain metastases (BM) is inadequate as BM have a 90% mortality rate within one year of diagnosis, posing a large unmet clinical need. The Singh lab has generated a large in-house biobank of patient-derived BM cell lines that are established from BM patient tumor samples. We use these BM cell lines to generate murine orthotopic xenograft models of BM and interrogate the biological processes that lead to BM. These models have successfully recapitulated all the stages of their respective BM cascades and additionally captured a “pre-metastatic” population of BM cells that have just seeded the brains of mice before forming mature, clinically detectable tumors. Pre-metastatic cell populations are impossible to detect in human patients but represent a therapeutic window wherein metastasizing cells can be targeted and eradicated before establishing clinically detectable and difficult to treat brain tumors. RNA sequencing of pre-metastatic BM cells revealed a unique deregulated transcriptomic profile that is specific to pre-metastatic cells despite the tumor of origin. Connectivity Map analysis was applied to the gene expression signatures of pre-metastatic BM cells to identity a compound (Drug A) which selectively inhibits BM cell proliferation but is not blood-brain barrier (BBB) penetrant and has not been previously considered in the context of brain metastasis. We synthesized a BBB-penetrant analogue of Drug A and found, using our patient-derived xenograft (PDX) models, that it increased survival benefit relative to both placebo and Drug A. Beginning with this promising scaffold, we will conduct structure-activity hypothesis-driven medicinal chemistry campaigns to optimize this scaffold for brain permeation while maintaining selective anti-BM activity. Development of novel small molecules that target pre-metastatic BM cells could slow or prevent the formation of BM and dramatically improve the prognosis of at-risk cancer patients.
Collapse
|
25
|
Tatari N, Zhang X, Chafe SC, McKenna D, Lawson KA, Subapanditha M, Shaikh MV, Seyfrid M, Savage N, Venugopal C, Moffat J, Singh SK. Dual Antigen T Cell Engagers Targeting CA9 as an Effective Immunotherapeutic Modality for Targeting CA9 in Solid Tumors. Front Immunol 2022; 13:905768. [PMID: 35874663 PMCID: PMC9296860 DOI: 10.3389/fimmu.2022.905768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 05/31/2022] [Indexed: 12/04/2022] Open
Abstract
Glioblastomas (GBM), the most common malignant primary adult brain tumors, are uniformly lethal and are in need of improved therapeutic modalities. GBM contain extensive regions of hypoxia and are enriched in therapy resistant brain tumor-initiating cells (BTICs). Carbonic anhydrase 9 (CA9) is a hypoxia-induced cell surface enzyme that plays an important role in maintenance of stem cell survival and therapeutic resistance. Here we demonstrate that CA9 is highly expressed in patient-derived BTICs. CA9+ GBM BTICs showed increased self-renewal and proliferative capacity. To target CA9, we developed dual antigen T cell engagers (DATEs) that were exquisitely specific for CA9-positive patient-derived clear cell Renal Cell Carcinoma (ccRCC) and GBM cells. Combined treatment of either ccRCC or GBM cells with the CA9 DATE and T cells resulted in T cell activation, increased release of pro-inflammatory cytokines and enhanced cytotoxicity in a CA9-dependent manner. Treatment of ccRCC and GBM patient-derived xenografts markedly reduced tumor burden and extended survival. These data suggest that the CA9 DATE could provide a novel therapeutic strategy for patients with solid tumors expressing CA9 to overcome treatment resistance.
Collapse
Affiliation(s)
- Nazanin Tatari
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
| | - Xiaoyu Zhang
- Donnelly Centre, University of Toronto, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Shawn C. Chafe
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Dillon McKenna
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Keith A. Lawson
- Donnelly Centre, University of Toronto, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Minomi Subapanditha
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Muhammad Vaseem Shaikh
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Mathieu Seyfrid
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Neil Savage
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
| | - Chitra Venugopal
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Jason Moffat
- Donnelly Centre, University of Toronto, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Sheila K. Singh
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
- *Correspondence: Sheila K. Singh,
| |
Collapse
|
26
|
Singh SK, Chokshi CR, Brakel B, Rossotti MA, Venugopal C, Salim S, Henry K. Abstract 564: Targeting axonal guidance with anti-ROBO1 CAR T cells: A new therapeutic strategy for malignant brain cancer. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
No standardized treatment exists for patients with recurrent glioblastoma (GBM). Given the aggressive nature of the disease and difficulty in modeling tumor recurrence, minimal efforts have been made to design rational therapies against it. The roundabout guidance receptor 1 (ROBO1) protein is involved in axonal guidance during neurodevelopment and is aberrantly upregulated in glioma where it mediates glioma cell migration. Here, we present that ROBO1 is highly expressed on the surface of malignant and treatment-refractory brain tumor initiating cells (BTICs), prompting the development of an anti-ROBO1 CAR-T cell therapy. Using the binding region of a single-domain antibody targeting ROBO1, we developed second-generation anti-ROBO1 CAR-T cells specific and effective against ROBO1-expressing BTICs. Upon antigen exposure, anti-ROBO1 CAR-T cells upregulated markers of activation and degranulation. Additionally, treatment of orthotopic and patient-derived brain tumor xenograft models with anti-ROBO1 CAR-T cells resulted in reduced tumor burden and prolonged survival, demonstrating the therapy’s therapeutic potential for treating neoplastic brain malignancies.
Citation Format: Sheila Kumari Singh, Chirayu R. Chokshi, Benjamin Brakel, Martin A. Rossotti, Chitra Venugopal, Sabra Salim, Kevin Henry. Targeting axonal guidance with anti-ROBO1 CAR T cells: A new therapeutic strategy for malignant brain cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 564.
Collapse
Affiliation(s)
| | | | | | | | | | - Sabra Salim
- 1McMaster University, Hamilton, Ontario, Canada
| | - Kevin Henry
- 2National Research Council Canada, Ottawa, Ontario, Canada
| |
Collapse
|
27
|
Bassey-Archibong BI, Chokshi CR, Aghaei N, Kieliszek A, Tatari N, McKenna D, Singh M, Subapanditha M, Parmar A, Savage N, Lu Y, Venugopal C, Singh S. Abstract 3999: HLA-G, SPAG9 and STAT3 signalling: An alliance that promotes early-stage brain metastases. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-3999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Brain metastases (BM) are the most common brain tumours in adults and a prominent cause of cancer-related mortality globally. Leading sources of BM are cancers of the lung, breast and melanoma, which together account for approximately 80% of all BM. Unfortunately, current clinical modalities for BM including surgery, radiation therapy and chemotherapy still offer limited efficacy and median survival times of 4 - 12 months in treated patients, emphasizing the need for more effective therapeutic strategies and generally a better understanding of the disease. We recently identified the presence of stem-like cells termed “brain metastasis-initiating cells” or BMICs in patient-derived BM from lung, breast and melanoma cancers that are able to recapitulate the complete brain metastatic cascade in pre-clinical models of BM. Through these models, we serendipitously captured lung, breast and melanoma BMICs at the “pre-metastatic” stage of BM - a stage where circulating metastatic cells have seeded the brain, but not yet formed full-blown (macro-metastatic) brain lesions. Transcriptomic analysis of pre-metastatic and macro-metastatic lung, breast and melanoma BMICs revealed a unique genetic profile in pre-metastatic BMICs that was distinct from their macro-metastatic counterparts. Further analysis identified several genes commonly up-regulated in all pre-metastatic BMIC cohorts irrespective of their primary tumour of origin. Intriguingly, we found that inhibition of the non-classical human leukocyte class I antigen-G or HLA-G gene (one of the top up-regulated genes in the pre-metastatic cohorts), reduced the ability of BMICs to form mature brain lesions. Correspondingly, HLA-G over-expression increased the capacity of BMICs to establish secondary brain tumours. Mechanistically, we discovered that over-expressing HLA-G levels in BMICs (to simulate the high levels that occurs in pre-metastatic BMICs), increased the activation of STAT3 signalling and this was mediated in part via a novel HLA-G binding partner - SPAG9. Our work thus uncovered a potential cooperative role between HLA-G, SPAG9 and STAT3 signalling during the early stages of BM. Indeed, attenuation of SPAG9 protein levels or STAT3 signalling in HLA-G over-expressing BMICs using CRISPR knockout and a STAT3 inhibitor respectively obstructed the ability of high HLA-G levels to promote mature brain lesions. This is the first study to reveal a role for an HLA-G-SPAG9-STAT3 axis in BM and highlights the potential of targeting this axis to inhibit BM, which will markedly extend patient survival.
Citation Format: Blessing I. Bassey-Archibong, Chirayu R. Chokshi, Nikoo Aghaei, Agata Kieliszek, Nazanin Tatari, Dillon McKenna, Mohini Singh, Minomi Subapanditha, Arun Parmar, Neil Savage, Yu Lu, Chitra Venugopal, Sheila Singh. HLA-G, SPAG9 and STAT3 signalling: An alliance that promotes early-stage brain metastases [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 3999.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Arun Parmar
- 1McMaster University, Hamilton, Ontario, Canada
| | - Neil Savage
- 1McMaster University, Hamilton, Ontario, Canada
| | - Yu Lu
- 1McMaster University, Hamilton, Ontario, Canada
| | | | | |
Collapse
|
28
|
Kieliszek A, Bassey-Archibong B, Venugopal C, Singh S. Abstract 976: Interrogating the pre-metastastic gene signature to block brain metastases. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
BACKGROUND: The incidence of brain metastases (BM) is tenfold higher than that of primary brain tumors. BM predominantly originate from primary lung, breast, and melanoma tumors with a 90% mortality rate within one year of diagnosis, posing a large unmet clinical need to identify novel therapies against BM. The goal of this work is to uncover the molecular factors that drive the formation of BM and investigate whether we can slow down and ultimately block BM formation.
METHODS: The Singh lab has generated a large in-house biobank of patient-derived BM cell lines that are established from BM patient tumor samples. We use these BM cell lines to generate murine orthotopic xenograft models of BM and interrogate the biological processes that lead to BM. These models have successfully recapitulated all the stages of their respective BM cascades and additionally captured a “pre-metastatic” population of BM cells that have just seeded the brains of mice before forming mature, clinically detectable tumors. Pre-metastatic cell populations are impossible to detect in human patients but represent a therapeutic window wherein metastasizing cells can be targeted and eradicated before establishing clinically detectable and difficult to treat brain tumors.
RESULTS: RNA sequencing of pre-metastatic BM cells revealed a unique deregulated transcriptomic profile that is specific to pre-metastatic cells despite the tumor of origin. Subsequent Connectivity Map analysis revealed compounds that we biologically characterized in vitro for selective anti-BMIC phenotypes. This effort led to a lead compound that exhibits anti-BM activity in vitro, while remaining ineffective against normal brain cell controls. Preliminary in vivo work has shown that following both orthotopic and intracardiac injection of BM cells, treatment with this lead compound reduces the tumor burden compared to mice being treated by a vehicle control, while providing a significant survival advantage. Ongoing mechanistic investigations aim to delineate the protein target of this compound in the context of the observed selective anti-BM phenotype.
CONCLUSION: Identification of novel small molecules that target premetastatic BM cells could slow or prevent the formation of BM and dramatically improve the prognosis of at-risk cancer patients.
Citation Format: Agata Kieliszek, Blessing Bassey-Archibong, Chitra Venugopal, Sheila Singh. Interrogating the pre-metastastic gene signature to block brain metastases [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 976.
Collapse
|
29
|
Chokshi CR, Brown K, Venugopal C, Moffat J, Singh SK. Abstract 60: Functional mapping reveals widespread remodelling and unrecognized pathway dependencies in recurrent glioblastoma. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Glioblastoma is a highly fatal brain cancer. The underlying functional drivers of treatment resistance and disease recurrence are unclear. By applying a genome-wide CRISPR-Cas9 library to patient-derived glioblastoma stem cell models, we systematically map genetic dependencies in patient-matched pre-treatment primary and post-treatment recurrent tumor cells. These insights reveal a large-scale remodelling of genetic dependency profiles at disease recurrence, arming recurrent tumor cells with newly-acquired genetic drivers and further loss of tumor suppressors. These analyses support parallel tumor-intrinsic mechanisms of treatment resistance which rely on acquisition of immunosuppressive capacity, including a defective mismatch repair pathway, ablation of PTEN activity, and a novel combination of de novo mutations in SWI/SNF components. We map a multilayered genetic and functional response to drive tumor recurrence, identifying protein tyrosine phosphatase 4A2 (PTP4A2) as a novel driver of self-renewal, proliferation and tumorigenicity at glioblastoma recurrence. Mechanistically, genetic perturbation and a small molecule inhibitor of PTP4A2 results in greater survival and reduced tumor growth in patient-derived models of recurrent glioblastoma.
Citation Format: Chirayu R. Chokshi, Kevin Brown, Chitra Venugopal, Jason Moffat, Sheila K. Singh. Functional mapping reveals widespread remodelling and unrecognized pathway dependencies in recurrent glioblastoma [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 60.
Collapse
Affiliation(s)
| | - Kevin Brown
- 2University of Toronto, Toronto, Ontario, Canada
| | | | - Jason Moffat
- 2University of Toronto, Toronto, Ontario, Canada
| | | |
Collapse
|
30
|
Huynh V, Tatari N, Marple A, Savage N, McKenna D, Venugopal C, Singh SK, Wylie R. Real-time evaluation of a hydrogel delivery vehicle for cancer immunotherapeutics within embedded spheroid cultures. J Control Release 2022; 348:386-396. [PMID: 35644288 DOI: 10.1016/j.jconrel.2022.05.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 05/02/2022] [Accepted: 05/22/2022] [Indexed: 11/19/2022]
Abstract
Many protein immunotherapeutics are hindered by transport barriers that prevent the obtainment of minimum effective concentrations (MECs) in solid tumors. Local delivery vehicles with tunable release (infusion) rates for immunotherapeutics are being developed to achieve local and sustained release. To expedite their discovery and translation, in vitro models can identify promising delivery vehicles and immunotherapies that benefit from sustained release by evaluating cancer spheroid killing in real-time. Using displacement affinity release (DAR) within a hydrogel, we tuned the release of a CD133 targeting dual antigen T cell engager (DATE) without the need for further DATE or hydrogel modifications, yielding an injectable vehicle that acts as a tunable infusion pump. To quantify bioactivity benefits, a 3D embedded cancer spheroid model was developed for the evaluation of sustained protein release and combination therapies on T cell mediated spheroid killing. Using automated brightfield and fluorescent microscopy, the size of red fluorescent protein (iRFP670) expressing spheroids were tracked to quantify spheroid growth or killing over time as a function of controlled delivery. We demonstrate that sustained DATE release enhanced T cell mediated killing of embedded glioblastoma spheroids at longer timepoints, killing was further enhanced with the addition of anti-PD1 antibody (αPD1). The multi-cellular embedded spheroid model with automated microscopy demonstrated the benefit of extended bispecific release on T cell mediated killing, which will expedite the identification and translation of delivery vehicles such as DAR for immunotherapeutics.
Collapse
Affiliation(s)
- Vincent Huynh
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Nazanin Tatari
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, Ontario L8S 4K1, Canada; Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario L8N 3Z5, Canada
| | - April Marple
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Neil Savage
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, Ontario L8S 4K1, Canada; Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario L8N 3Z5, Canada
| | - Dillon McKenna
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, Ontario L8S 4K1, Canada; Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, Ontario L8N 3Z5, Canada
| | - Chitra Venugopal
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, Ontario L8S 4K1, Canada; Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, Ontario L8N 3Z5, Canada
| | - Sheila K Singh
- Centre for Discovery in Cancer Research, McMaster University, Hamilton, Ontario L8S 4K1, Canada; Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario L8N 3Z5, Canada; Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, Ontario L8N 3Z5, Canada
| | - Ryan Wylie
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada; School of Biomedical Engineering, McMaster University, Hamilton, Ontario L8S 4M1, Canada.
| |
Collapse
|
31
|
Burns I, Gwynne WD, Suk Y, Custers S, Chaudhry I, Venugopal C, Singh SK. The Road to CAR T-Cell Therapies for Pediatric CNS Tumors: Obstacles and New Avenues. Front Oncol 2022; 12:815726. [PMID: 35155252 PMCID: PMC8829546 DOI: 10.3389/fonc.2022.815726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/07/2022] [Indexed: 11/13/2022] Open
Abstract
Pediatric central nervous system (CNS) tumors are the most common solid tumors diagnosed in children and are the leading cause of pediatric cancer-related death. Those who do survive are faced with the long-term adverse effects of the current standard of care treatments of chemotherapy, radiation, and surgery. There is a pressing need for novel therapeutic strategies to treat pediatric CNS tumors more effectively while reducing toxicity - one of these novel modalities is chimeric antigen receptor (CAR) T-cell therapy. Currently approved for use in several hematological malignancies, there are promising pre-clinical and early clinical data that suggest CAR-T cells could transform the treatment of pediatric CNS tumors. There are, however, several challenges that must be overcome to develop safe and effective CAR T-cell therapies for CNS tumors. Herein, we detail these challenges, focusing on those unique to pediatric patients including antigen selection, tumor immunogenicity and toxicity. We also discuss our perspective on future avenues for CAR T-cell therapies and potential combinatorial treatment approaches.
Collapse
Affiliation(s)
- Ian Burns
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - William D Gwynne
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Yujin Suk
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada.,Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Stefan Custers
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Iqra Chaudhry
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Sheila K Singh
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| |
Collapse
|
32
|
Nawar N, Bukhari S, Adile AA, Suk Y, Manaswiyoungkul P, Toutah K, Olaoye OO, Raouf YS, Sedighi A, Garcha HK, Hassan MM, Gwynne W, Israelian J, Radu TB, Geletu M, Abdeldayem A, Gawel JM, Cabral AD, Venugopal C, de Araujo ED, Singh SK, Gunning PT. Discovery of HDAC6-Selective Inhibitor NN-390 with in Vitro Efficacy in Group 3 Medulloblastoma. J Med Chem 2022; 65:3193-3217. [PMID: 35119267 DOI: 10.1021/acs.jmedchem.1c01585] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Histone deacetylase 6 (HDAC6) has been targeted in clinical studies for anticancer effects due to its role in oncogenic transformation and metastasis. Through a second-generation structure-activity relationship (SAR) study, the design, and biological evaluation of the selective HDAC6 inhibitor NN-390 is reported. With nanomolar HDAC6 potency, >200-550-fold selectivity for HDAC6 in analogous HDAC isoform functional assays, potent intracellular target engagement, and robust cellular efficacy in cancer cell lines, NN-390 is the first HDAC6-selective inhibitor to show therapeutic potential in metastatic Group 3 medulloblastoma (MB), an aggressive pediatric brain tumor often associated with leptomeningeal metastases and therapy resistance. MB stem cells contribute to these patients' poor clinical outcomes. NN-390 selectively targets this cell population with a 44.3-fold therapeutic margin between patient-derived Group 3 MB cells in comparison to healthy neural stem cells. NN-390 demonstrated a 45-fold increased potency over HDAC6-selective clinical candidate citarinostat. In summary, HDAC6-selective molecules demonstrated in vitro therapeutic potential against Group 3 MB.
Collapse
Affiliation(s)
- Nabanita Nawar
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Shazreh Bukhari
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Ashley A Adile
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Yujin Suk
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Pimyupa Manaswiyoungkul
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Krimo Toutah
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada
| | - Olasunkanmi O Olaoye
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Yasir S Raouf
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Abootaleb Sedighi
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada
| | - Harsimran Kaur Garcha
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Muhammad Murtaza Hassan
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - William Gwynne
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Johan Israelian
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Tudor B Radu
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Mulu Geletu
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada
| | - Ayah Abdeldayem
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Justyna M Gawel
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada
| | - Aaron D Cabral
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Chitra Venugopal
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada.,Department of Surgery, Faculty of Health Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Elvin D de Araujo
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada
| | - Sheila K Singh
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada.,Department of Surgery, Faculty of Health Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Patrick T Gunning
- Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, Ontario L5L 1C6, Canada.,Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| |
Collapse
|
33
|
Suk Y, Gwynne WD, Burns I, Venugopal C, Singh SK. Childhood Medulloblastoma: An Overview. Methods Mol Biol 2022; 2423:1-12. [PMID: 34978683 DOI: 10.1007/978-1-0716-1952-0_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Medulloblastoma (MB) is the most common malignant pediatric brain tumor, representing 60% of childhood intracranial embryonal tumors. Despite multimodal advances in therapies over the last 20 years that have yielded a 5-year survival rate of 75%, high-risk patients (younger than 3 years, subtotal resection, metastatic lesions at diagnosis) still experience a 5-year overall survival of less than 70%. In this introductory chapter on pediatric MB, we describe the initial discrimination of MB based on histopathological examination and the more recent progress made in global gene expression profiling methods that have allowed scientists to more accurately subclassify and prognosticate on MB based on molecular characteristics. The identification of subtype-specific molecular drivers and pathways presents novel therapeutic targets that could lead to MB subtype-specific treatment modalities. Additionally, we detail how the cancer stem cell (CSC) hypothesis provides an explanation for tumor recurrence, and the potential for CSC-targeted therapies to address treatment-refractory MB. These personalized therapies can potentially increase MB survivorship and negate some of the long-term neurotoxicity associated with the current standard of care for MB patients.
Collapse
Affiliation(s)
- Yujin Suk
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - William D Gwynne
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Ian Burns
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Sheila K Singh
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada.
- Department of Surgery, McMaster University, Hamilton, ON, Canada.
| |
Collapse
|
34
|
Seyfrid M, Maich WT, Shaikh VM, Tatari N, Upreti D, Piyasena D, Subapanditha M, Savage N, McKenna D, Mikolajewicz N, Han H, Chokshi C, Kuhlmann L, Khoo A, Salim SK, Archibong-Bassey B, Gwynne W, Brown K, Murtaza N, Bakhshinyan D, Vora P, Venugopal C, Moffat J, Kislinger T, Singh S. CD70 as an actionable immunotherapeutic target in recurrent glioblastoma and its microenvironment. J Immunother Cancer 2022; 10:e003289. [PMID: 35017149 PMCID: PMC8753449 DOI: 10.1136/jitc-2021-003289] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2021] [Indexed: 12/13/2022] Open
Abstract
PURPOSE Glioblastoma (GBM) patients suffer from a dismal prognosis, with standard of care therapy inevitably leading to therapy-resistant recurrent tumors. The presence of cancer stem cells (CSCs) drives the extensive heterogeneity seen in GBM, prompting the need for novel therapies specifically targeting this subset of tumor-driving cells. Here, we identify CD70 as a potential therapeutic target for recurrent GBM CSCs. EXPERIMENTAL DESIGN In the current study, we identified the relevance and functional influence of CD70 on primary and recurrent GBM cells, and further define its function using established stem cell assays. We use CD70 knockdown studies, subsequent RNAseq pathway analysis, and in vivo xenotransplantation to validate CD70's role in GBM. Next, we developed and tested an anti-CD70 chimeric antigen receptor (CAR)-T therapy, which we validated in vitro and in vivo using our established preclinical model of human GBM. Lastly, we explored the importance of CD70 in the tumor immune microenvironment (TIME) by assessing the presence of its receptor, CD27, in immune infiltrates derived from freshly resected GBM tumor samples. RESULTS CD70 expression is elevated in recurrent GBM and CD70 knockdown reduces tumorigenicity in vitro and in vivo. CD70 CAR-T therapy significantly improves prognosis in vivo. We also found CD27 to be present on the cell surface of multiple relevant GBM TIME cell populations, notably putative M1 macrophages and CD4 T cells. CONCLUSION CD70 plays a key role in recurrent GBM cell aggressiveness and maintenance. Immunotherapeutic targeting of CD70 significantly improves survival in animal models and the CD70/CD27 axis may be a viable polytherapeutic avenue to co-target both GBM and its TIME.
Collapse
Affiliation(s)
- Mathieu Seyfrid
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - William Thomas Maich
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | | | - Nazanin Tatari
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Deepak Upreti
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Deween Piyasena
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Minomi Subapanditha
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Neil Savage
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Dillon McKenna
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Nicholas Mikolajewicz
- Department of Molecular Genetics - Donnelly Centre, University of Toronto, Toronto, Ontario, Canada
| | - Hong Han
- Department of Molecular Genetics - Donnelly Centre, University of Toronto, Toronto, Ontario, Canada
| | - Chirayu Chokshi
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Laura Kuhlmann
- Department of Medical Biophysics, Princess Margaret Hospital Cancer Centre, Toronto, Ontario, Canada
| | - Amanda Khoo
- Department of Medical Biophysics, Princess Margaret Hospital Cancer Centre, Toronto, Ontario, Canada
| | - Sabra Khalid Salim
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | | | - William Gwynne
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Kevin Brown
- Department of Molecular Genetics - Donnelly Centre, University of Toronto, Toronto, Ontario, Canada
| | - Nadeem Murtaza
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - David Bakhshinyan
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Parvez Vora
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Jason Moffat
- Department of Molecular Genetics - Donnelly Centre, University of Toronto, Toronto, Ontario, Canada
| | - Thomas Kislinger
- Department of Medical Biophysics, Princess Margaret Hospital Cancer Centre, Toronto, Ontario, Canada
| | - Sheila Singh
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| |
Collapse
|
35
|
Abstract
Advances in chimeric antigen receptor (CAR) T cell therapies have led to the modality dominating translational cancer research; however, a standardized protocol for evaluating such therapies in vitro is needed. This protocol details the in vitro preclinical evaluation of CAR-T cell therapies for glioblastoma (GBM), including target cell cytotoxicity and T cell proliferation, activation, and cytokine release assays. For complete details on the use and execution of this protocol, please refer to Vora et al. (2020). Evaluating CAR-T cell activity in heterogeneous, patient-derived GBM models Functional readout of therapy-mediated target cell cytotoxicity Assessing proliferation, activation, and cytokine release of CAR-T cells
Collapse
Affiliation(s)
- Benjamin A Brakel
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Chirayu R Chokshi
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Sabra K Salim
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Sheila Singh
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada.,Department of Surgery, McMaster University, Hamilton, ON L8S 4L8, Canada
| |
Collapse
|
36
|
Bakhshinyan D, Adile AA, Liu J, Gwynne WD, Suk Y, Custers S, Burns I, Singh M, McFarlane N, Subapanditha MK, Qazi MA, Vora P, Kameda-Smith MM, Savage N, Desmond KL, Tatari N, Tran D, Seyfrid M, Hope K, Bock NA, Venugopal C, Bader GD, Singh SK. Temporal profiling of therapy resistance in human medulloblastoma identifies novel targetable drivers of recurrence. Sci Adv 2021; 7:eabi5568. [PMID: 34878832 PMCID: PMC8654291 DOI: 10.1126/sciadv.abi5568] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 10/16/2021] [Indexed: 05/20/2023]
Abstract
Medulloblastoma (MB) remains a leading cause of cancer-related mortality among children. The paucity of MB samples collected at relapse has hindered the functional understanding of molecular mechanisms driving therapy failure. New models capable of accurately recapitulating tumor progression in response to conventional therapeutic interventions are urgently needed. In this study, we developed a therapy-adapted PDX MB model that has a distinct advantage of generating human MB recurrence. The comparative gene expression analysis of MB cells collected throughout therapy led to identification of genes specifically up-regulated after therapy, including one previously undescribed in the setting of brain tumors, bactericidal/permeability-increasing fold-containing family B member 4 (BPIFB4). Subsequent functional validation resulted in a markedly diminished in vitro proliferation, self-renewal, and longevity of MB cells, translating into extended survival and reduced tumor burden in vivo. Targeting endothelial nitric oxide synthase, a downstream substrate of BPIFB4, impeded growth of several patient-derived MB lines at low nanomolar concentrations.
Collapse
Affiliation(s)
- David Bakhshinyan
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Ashley A. Adile
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Jeff Liu
- The Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - William D. Gwynne
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Yujin Suk
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Stefan Custers
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Ian Burns
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Mohini Singh
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Nicole McFarlane
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Minomi K. Subapanditha
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
| | - Maleeha A. Qazi
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Parvez Vora
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Michelle M. Kameda-Smith
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Neil Savage
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Kim L. Desmond
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON, Canada
| | - Nazanin Tatari
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Damian Tran
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Mathieu Seyfrid
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Kristin Hope
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Nicholas A. Bock
- Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON, Canada
| | - Chitra Venugopal
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Gary D. Bader
- The Donnelly Centre, University of Toronto, Toronto, ON, Canada
- Lunenfeld-Tanenbaum Research Institute at Mount Sinai Hospital, Toronto, ON, Canada
- Princess Margaret Cancer Centre at University Health Network, Department of Molecular Genetics and Department of Computer Science, Toronto, ON, Canada
| | - Sheila K. Singh
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
- Corresponding author.
| |
Collapse
|
37
|
Qazi M, Salim S, Brown KR, Savage N, Mickolajewicz N, Han H, Chokshi CR, Mansouri A, Venugopal C, Kislinger T, Goyal S, Moffat J, Singh SK. TMOD-15. CHARACTERIZATION OF THE MINIMAL RESIDUAL DISEASE STATE REVEALS DISTINCT EVOLUTIONARY TRAJECTORIES OF HUMAN GLIOBLASTOMA. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab196.876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Recurrence of solid tumors renders patients vulnerable to a distinctly advanced, highly treatment-refractory disease state that has an increased mutational burden and novel oncogenic drivers not detected at initial diagnosis. Improving outcomes for recurrent cancers requires a better understanding of cancer cell populations that expand from the post-therapy, minimal residual disease (MRD) state. We profiled barcoded tumor cell populations through therapy at tumor initiation/engraftment, MRD and recurrence in our therapy-adapted, patient-derived xenograft models of glioblastoma (GBM). Tumors showed distinct patterns of recurrence in which clonal populations exhibited either a priori, pre-existing fitness, or equipotent fitness acquired through therapy. Characterization of the MRD state by single-cell and bulk RNA sequencing revealed a tumor-intrinsic immunomodulatory signature with strong prognostic significance at the transcriptomic level and in proteomic analysis of cerebrospinal fluid (CSF) collected from GBM patients at all stages of disease. Our results provide insight into the innate and therapy-driven dynamics of human glioblastoma, and the prognostic value of the interrogating of the MRD state in solid cancers.
Collapse
Affiliation(s)
| | | | | | | | | | - Hong Han
- University of Toronto, Toronto, ON, Canada
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Kieliszek A, Bassey-Archibong B, Venugopal C, Singh SK. STEM-02. THERAPEUTIC INTERVENTION OF LUNG-, BREAST-, AND MELANOMA-BRAIN METASTASIS. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab196.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
BACKGROUND
The incidence of brain metastases (BM) is tenfold higher than that of primary brain tumours. BM predominantly originate from primary lung, breast, and melanoma tumours with a 90% mortality rate within one year of diagnosis, posing a large unmet clinical need to identify novel therapies against BM.This unmet clinical need is largely attributed to a small population of cancer stem cells (CSCs), termed BM-initiating cells (BMICs), that are able to escape a primary tumour, drive metastasis and facilitate the formation of a secondary tumour in the brain.
METHODS
Using a large in-house biobank of patient-derived BMIC lines, the Singh Lab has generated murine orthotopic patient-derived xenograft models of BM and captured a “premetastatic” population of BMICs that have just seeded the brains of mice before forming clinically detectable tumours: a cell population that is impossible to detect in human patients but represents a therapeutic window wherein metastasizing cells can be targeted and eradicated before establishing clinically detectable tumours.
RESULTS
RNA sequencing of pre-metastatic BMICs from all three primary tumour models with subsequent Connectivity Map analysis identified a lead compound that exhibits selective anti-BM activity in vitro. Preliminary in vivo work has shown that this lead compound reduces the tumor burden of treated mice compared to vehicle control while providing a significant survival advantage. Ongoing mechanistic investigations aim to delineate the protein target of this compound in the context of the observed selective anti-BMIC phenotype.
CONCLUSION
Identification of novel small molecules that target premetastatic BM cells could prevent the formation of BM and dramatically improve the prognosis of at-risk cancer patients.
Collapse
|
39
|
Chokshi CR, Tieu D, Brown KR, Venugopal C, Liu L, Kuhlmann L, Rossotti MA, Chan K, Tong AHY, Savage N, McKenna D, Aghaei N, Subapanditha M, Vaseem Shaikh M, Tatari N, Brakel B, Nachmani O, Ignatchenko V, Salamoun JM, Wipf P, Sharlow E, Provias JP, Lu JQ, Murty NK, Lazo JS, Kislinger T, Henry KA, Lu Y, Moffat J, Singh SK. STEM-05. FUNCTIONAL MAPPING REVEALS WIDESPREAD REMODELLING AND UNRECOGNIZED PATHWAY DEPENDENCIES IN RECURRENT GLIOBLASTOMA. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab196.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Resistance to genotoxic therapies and tumor recurrence are hallmarks of glioblastoma (GBM), an aggressive brain tumor. Here, we explore the functional drivers of post-treatment recurrent GBM. By conducting genome-wide CRISPR-Cas9 screens in patient-derived GBM models, we uncover distinct genetic dependencies in recurrent tumor cells that were absent in their patient-matched primary predecessors, accompanied by increased mutational burden and differential transcript and protein expression. These analyses support parallel tumor-intrinsic mechanisms of treatment resistance which rely on acquisition of immunosuppressive capacity, including a defective mismatch repair pathway, ablation of PTEN activity, and a novel combination of de novo mutations in SWI/SNF components. We map a multilayered genetic and functional response to resist chemoradiotherapy and drive tumor recurrence, identifying protein tyrosine phosphatase 4A2 (PTP4A2) as a novel driver of self-renewal, proliferation and tumorigenicity at GBM recurrence. Mechanistically, genetic perturbation and a small molecule inhibitor of PTP4A2 repress axon guidance activity through a dephosphorylation axis with roundabout guidance receptor 1 (ROBO1) and exploit a genetic dependency on ROBO signaling. Importantly, engineered anti-ROBO1 single-domain antibodies also mimic the effects of PTP4A2 inhibition. We conclude that functional reprogramming drives tumorigenicity and present a dependence on a PTP4A2-ROBO1 signaling axis at GBM recurrence.
Collapse
Affiliation(s)
| | - David Tieu
- University of Toronto, Toronto, ON, Canada
| | | | | | - Lina Liu
- McMaster University, Hamilton, ON, Canada
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Peter Wipf
- University of Pittsburgh, Pittsburgh, USA
| | | | | | | | | | - John S Lazo
- University of Virginia, Charlottesville, USA
| | | | | | - Yu Lu
- McMaster University, Hamilton, ON, Canada
| | | | | |
Collapse
|
40
|
Chokshi CR, Brakel B, Rossotti MA, Venugopal C, Salim S, Bloemberg D, Vora P, Henry KA, Singh SK. EXTH-53. ANTI-ROBO1 CAR T CELLS EFFECTIVELY TARGET MALIGNANT BRAIN CANCER. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab196.692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
No standardized treatment exists for patients with recurrent glioblastoma (GBM). Given the aggressive nature of the disease and difficulty in modeling tumor recurrence, minimal efforts have been made to design rational therapies against it. The roundabout guidance receptor 1 (ROBO1) protein is involved in axonal guidance during neurodevelopment and is aberrantly upregulated in glioma where it mediates glioma cell migration. Here, we present that ROBO1 is highly expressed on the surface of malignant and treatment-refractory brain tumor initiating cells (BTICs), prompting the development of an anti-ROBO1 CAR-T cell therapy. Using the binding region of a single-domain antibody targeting ROBO1, we developed second-generation anti-ROBO1 CAR-T cells specific and effective against ROBO1-expressing BTICs. Upon antigen exposure, anti-ROBO1 CAR-T cells upregulated markers of activation and degranulation. Additionally, treatment of orthotopic and patient-derived brain tumor xenograft models with anti-ROBO1 CAR-T cells resulted in reduced tumor burden and prolonged survival, demonstrating the therapy’s therapeutic potential for treating neoplastic brain malignancies.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Kevin A Henry
- National Research Council Canada, Ottawa, ON, Canada
| | | |
Collapse
|
41
|
Aghaei N, Lam FC, Kasper E, Venugopal C, Singh SK. TMOD-01. AN IN VIVO FUNCTIONAL GENOMICS SCREEN TO IDENTIFY NOVEL DRIVERS OF LUNG-TO-BRAIN METASTASIS. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab196.863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
INTRODUCTION
Brain metastases, the most common tumors of the central nervous system, occur in approximately 20% of primary adult cancers. In particular, 40% of patients with non-small cell lung cancer develop brain metastasis. As systemic therapies for the treatment of non-small cell lung cancer become increasingly effective at controlling primary disease, patients are ironically succumbing to their brain metastases. This highlights a large unmet need to develop novel targeted therapies for the treatment of lung-to-brain metastases (LBM). We hypothesize that an in vivo functional genomic screen can identify novel genes that drive LBM.
METHODS
To do this, we developed a patient-derived xenograft (PDX) mouse model of LBM using patient lung cancer cell lines. This PDX model of LBM enables the use of fluorescent and bioluminescent in vivo imaging to track the progression of lung tumor and brain metastases.
RESULTS
We have performed an in vivo genome-wide CRISPR activation screening to identify novel drivers of LBM. We will derive candidate genes through mouse brain and lung tissue sequencing after mice reach endpoint.
EXPECTED AREA OF FINDINGS
This platform will lead to potential therapeutic targets to prevent the formation of LBM and prolong the survival of patients with non-small cell lung cancer.
LIMITATIONS
There may be limitations in getting candidate hits that overlap in all mice in our first replicate. This can be remedied by conducting the in vivo screen in at least three biological replicates.
CONCLUSION
To the best of our knowledge, this is the first genome-wide in vivo CRISPR activation screen searching for drivers of LBM using a PDX animal model. This study can provide a framework to gain a deeper understanding of the regulators of BM formation which will hopefully lead to targeted drug discovery.
Collapse
Affiliation(s)
| | - Fred C Lam
- Center for Precision Cancer Medicine at MIT, Long Island, NY, USA
| | - Ekkhard Kasper
- McMaster University Faculty of Health Sciences, Hamilton, Canada
| | | | | |
Collapse
|
42
|
Aghaei N, Lam FC, Kasper E, Venugopal C, Singh S. BSCI-18. Identifying novel drivers of lung-to-brain metastasis through in vivo functional genomics. Neurooncol Adv 2021. [PMCID: PMC8351282 DOI: 10.1093/noajnl/vdab071.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Introduction Brain metastases, the most common tumors of the central nervous system, occur in approximately 20% of primary adult cancers. In particular, 40% of patients with non-small cell lung cancer develop brain metastasis. As systemic therapies for the treatment of non-small cell lung cancer become increasingly effective at controlling primary disease, patients are ironically succumbing to their brain metastases. This highlights a large unmet need to develop novel targeted therapies for the treatment of lung-to-brain metastases (LBM). We hypothesize that an in vivo functional genomic screen can identify novel genes that drive LBM. Methods To do this, we developed a patient-derived xenograft (PDX) mouse model of LBM using patient lung cancer cell lines. This PDX model of LBM enables the use of fluorescent and bioluminescent in vivo imaging to track the progression of lung tumor and brain metastases. Results We have performed an in vivo genome-wide CRISPR activation screening to identify novel drivers of LBM. We will derive candidate genes through mouse brain and lung tissue sequencing after mice reach endpoint. Expected Area of findings This platform will lead to potential therapeutic targets to prevent the formation of LBM and prolong the survival of patients with non-small cell lung cancer. Limitations There may be limitations in getting candidate hits that overlap in all mice in our first replicate. This can be remedied by conducting the in vivo screen in at least three biological replicates. Conclusion To the best of our knowledge, this is the first genome-wide in vivo CRISPR activation screen searching for drivers of LBM using a PDX animal model. This study can provide a framework to gain a deeper understanding of the regulators of BM formation which will hopefully lead to targeted drug discovery.
Collapse
Affiliation(s)
- Nikoo Aghaei
- McMaster University, Faculty of Health Sciences, Department of Biochemistry and Biomedical Sciences, Hamilton, Canada
| | - Fred C Lam
- Center for Precision Cancer Medicine at MIT, MA, USA
| | - Ekkehard Kasper
- Hamilton Health Sciences, Division of Neurosurgery, Hamilton, Canada
| | - Chitra Venugopal
- McMaster University, Faculty of Health Sciences, Department of Biochemistry and Biomedical Sciences, Hamilton, Canada
| | - Sheila Singh
- McMaster University, Faculty of Health Sciences, Department of Biochemistry and Biomedical Sciences, Hamilton, Canada
- Hamilton Health Sciences, Division of Neurosurgery, Hamilton, Canada
| |
Collapse
|
43
|
Kieliszek A, Bassey-Archibong B, Venugopal C, Singh S. BSCI-19. Therapeutic intervention of lung-, breast-, and melanoma-brain metastasis. Neurooncol Adv 2021. [PMCID: PMC8351269 DOI: 10.1093/noajnl/vdab071.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The incidence of brain metastases (BM) is tenfold higher than that of primary brain tumours. BM predominantly originate from primary lung, breast, and melanoma tumours with a 90% mortality rate within one year of diagnosis, posing a large unmet clinical need to identify novel therapies against BM.
Methods
Using a large in-house biobank of patient-derived BM cell lines, the Singh Lab has generated murine orthotopic patient-derived xenograft models of BM and captured a “premetastatic” population of BM cells that have just seeded the brains of mice before forming clinically detectable tumours: a cell population that is impossible to detect in human patients but represents a therapeutic window wherein metastasizing cells can be targeted and eradicated before establishing clinically detectable tumours.
Results
RNA sequencing of pre-metastatic BM cells from all three primary tumour models with subsequent Connectivity Map analysis identified a lead compound that exhibits selective anti-BM activity in vitro. Preliminary in vivo work has shown that this lead compound reduces the tumor burden of treated mice compared to vehicle control while providing a significant survival advantage. Ongoing mechanistic investigations aim to delineate the protein target of this compound in the context of the observed selective anti-BM phenotype.
Conclusion
Therapeutic targeting of premetastatic BM cells could prevent the formation of BM and dramatically improve the prognosis of at-risk cancer patients.
Collapse
|
44
|
Chokshi CR, Brakel BA, Tatari N, Savage N, Salim SK, Venugopal C, Singh SK. Advances in Immunotherapy for Adult Glioblastoma. Cancers (Basel) 2021; 13:cancers13143400. [PMID: 34298615 PMCID: PMC8305609 DOI: 10.3390/cancers13143400] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 12/28/2022] Open
Abstract
Simple Summary Therapy failure and disease recurrence are hallmarks of glioblastoma (GBM), the most common and lethal tumor in adults that originates in the brain. Despite aggressive standards of care, tumor recurrence is inevitable with no standardized second-line therapy. Recent clinical studies evaluating therapies that augment the anti-tumor immune response (i.e., immunotherapies) have yielded promising results in subsets of GBM patients. Here, we summarize clinical studies in the past decade that evaluate vaccines, immune checkpoint inhibitors and chimeric antigen receptor (CAR) T cells for treatment of GBM. Although immunotherapies have yet to return widespread efficacy for the majority of GBM patients, critical insights from completed and ongoing clinical trials are informing development of the next generation of therapies, with the goal to alleviate disease burden and extend patient survival. Abstract Despite aggressive multimodal therapy, glioblastoma (GBM) remains the most common malignant primary brain tumor in adults. With the advent of therapies that revitalize the anti-tumor immune response, several immunotherapeutic modalities have been developed for treatment of GBM. In this review, we summarize recent clinical and preclinical efforts to evaluate vaccination strategies, immune checkpoint inhibitors (ICIs) and chimeric antigen receptor (CAR) T cells. Although these modalities have shown long-term tumor regression in subsets of treated patients, the underlying biology that may predict efficacy and inform therapy development is being actively investigated. Common to all therapeutic modalities are fundamental mechanisms of therapy evasion by tumor cells, including immense intratumoral heterogeneity, suppression of the tumor immune microenvironment and low mutational burden. These insights have led efforts to design rational combinatorial therapies that can reignite the anti-tumor immune response, effectively and specifically target tumor cells and reliably decrease tumor burden for GBM patients.
Collapse
Affiliation(s)
- Chirayu R. Chokshi
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8N 3Z5, Canada; (C.R.C.); (B.A.B.); (N.T.); (N.S.); (S.K.S.)
| | - Benjamin A. Brakel
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8N 3Z5, Canada; (C.R.C.); (B.A.B.); (N.T.); (N.S.); (S.K.S.)
| | - Nazanin Tatari
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8N 3Z5, Canada; (C.R.C.); (B.A.B.); (N.T.); (N.S.); (S.K.S.)
| | - Neil Savage
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8N 3Z5, Canada; (C.R.C.); (B.A.B.); (N.T.); (N.S.); (S.K.S.)
| | - Sabra K. Salim
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8N 3Z5, Canada; (C.R.C.); (B.A.B.); (N.T.); (N.S.); (S.K.S.)
| | - Chitra Venugopal
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON L8N 3Z5, Canada;
| | - Sheila K. Singh
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8N 3Z5, Canada; (C.R.C.); (B.A.B.); (N.T.); (N.S.); (S.K.S.)
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON L8N 3Z5, Canada;
- Correspondence:
| |
Collapse
|
45
|
Aghaei N, Lam FC, Kasper E, Venugopal C, Singh S. NGMA-5. An in vivo functional genomics screen to identify novel drivers of lung-to-brain metastasis. Neurooncol Adv 2021. [PMCID: PMC8255412 DOI: 10.1093/noajnl/vdab070.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Introduction Brain metastases, the most common tumors of the central nervous system, occur in approximately 20% of primary adult cancers. In particular, 40% of patients with non-small cell lung cancer develop brain metastasis. As systemic therapies for the treatment of non-small cell lung cancer become increasingly effective at controlling primary disease, patients are ironically succumbing to their brain metastases. This highlights a large unmet need to develop novel targeted therapies for the treatment of lung-to-brain metastases (LBM). We hypothesize that an in vivo functional genomic screen can identify novel genes that drive LBM. Methods To do this, we developed a patient-derived xenograft (PDX) mouse model of LBM using patient lung cancer cell lines. This PDX model of LBM enables the use of fluorescent and bioluminescent in vivo imaging to track the progression of lung tumor and brain metastases. Results We have performed an in vivo genome-wide CRISPR activation screening to identify novel drivers of LBM. We will derive candidate genes through mouse brain and lung tissue sequencing after mice reach endpoint. Expected Area of findings This platform will lead to potential therapeutic targets to prevent the formation of LBM and prolong the survival of patients with non-small cell lung cancer. Conclusion To the best of our knowledge, this is the first genome-wide in vivo CRISPR activation screen searching for drivers of LBM using a PDX animal model. This study can provide a framework to gain a deeper understanding of the regulators of BM formation which will hopefully lead to targeted drug discovery.
Collapse
Affiliation(s)
| | - Fred C Lam
- Division of Neurosurgery, Hamilton Health Sciences, Hamilton, ON, Canada
| | - Ekkhard Kasper
- Division of Neurosurgery, Hamilton Health Sciences, Hamilton, ON, Canada
| | | | - Sheila Singh
- McMaster University, Hamilton, ON, Canada
- Division of Neurosurgery, Hamilton Health Sciences, Hamilton, ON, Canada
| |
Collapse
|
46
|
Tatari N, Khan S, Livingstone J, Venugopal C, Chan J, Hawkins C, Provias J, Lu JQ, Ask K, Kislinger T, Singh S. Abstract PO052: Uncovering the evolution of Glioblastoma proteome landscape from primary to the recurrent stage for development of novel diagnostic and predictive biomarkers. Cancer Res 2021. [DOI: 10.1158/1538-7445.tme21-po052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Glioblastoma (GBM) is characterized by extensive cellular and genetic heterogeneity. A wealth of literature describes the biology of primary GBM (p-GBM), but we currently lack an understanding of how GBM evolves through therapy to become a very different tumor at recurrence, which may explain why therapies against p-GBM fail to work in recurrent GBM (r-GBM). Therefore, to understand the evolution of r-GBM, we aimed to characterize patient-matched p-GBM and r-GBM proteome and identify potential therapeutic targets for r-GBM. We collected one of the world’s largest patient-matched p-GBM and r-GBM samples from the Hamilton Health Sciences for gene expression profiling, proteomic analyses and tissue microarray (TMA) construction. Nano-String analysis was performed for GBM subtype identification. Furthermore, patient demographics was generated for survival analysis. The top potential therapeutic targets for r-GBM were identified by proteomic analysis and were validated on TMA using immunohistochemistry. The essentiality of each protein in r-GBM were assessed using CRISPR KO studies and the top hit were selected for pre-clinical testing. 6798 proteins were detected by shotgun, label-free proteomic analyses. Differential expression analysis on the surface proteins revealed a distinct set of proteins overexpressed in r-GBM among which 7 proteins were selected as top potential therapeutic targets for r-GBM. Besides, the patients were grouped based on survival rate and the differential expression analysis revealed significantly enriched proteins and pathways in short-term survivors which cause aggressive phenotypes in GBM. In addition, consensus clustering identified five protein clusters which show distinction between primary vs recurrent tumors. Our data also strongly supports a preponderance of immune regulatory/suppressive genes as important drivers of r-GBM. This study resulted in identification of diagnostic and predictive biomarkers which is extremely complementary and instructive for the development of new poly-therapeutic paradigms for GBM patients at the recurrent level and will lead to improvement of patient’s survival.
Citation Format: Nazanin Tatari, Shahbaz Khan, Julie Livingstone, Chitra Venugopal, Jennifer Chan, Cynthia Hawkins, John Provias, Jian-Qiang Lu, Kjetil Ask, Thomas Kislinger, Sheila Singh. Uncovering the evolution of Glioblastoma proteome landscape from primary to the recurrent stage for development of novel diagnostic and predictive biomarkers [abstract]. In: Proceedings of the AACR Virtual Special Conference on the Evolving Tumor Microenvironment in Cancer Progression: Mechanisms and Emerging Therapeutic Opportunities; in association with the Tumor Microenvironment (TME) Working Group; 2021 Jan 11-12. Philadelphia (PA): AACR; Cancer Res 2021;81(5 Suppl):Abstract nr PO052.
Collapse
Affiliation(s)
- Nazanin Tatari
- 1Stem Cell & Cancer Research Institute, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada,
| | - Shahbaz Khan
- 2Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada,
| | - Julie Livingstone
- 2Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada,
| | - Chitra Venugopal
- 1Stem Cell & Cancer Research Institute, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada,
| | - Jennifer Chan
- 3Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, AB, Canada,
| | - Cynthia Hawkins
- 4Department of Paediatric Laboratory Medicine, Hospital for Sick Children, Toronto, ON, Canada,
| | - John Provias
- 5Department of Pathology, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada,
| | - Jian-Qiang Lu
- 5Department of Pathology, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada,
| | - Kjetil Ask
- 6McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Thomas Kislinger
- 2Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada,
| | - Sheila Singh
- 1Stem Cell & Cancer Research Institute, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada,
| |
Collapse
|
47
|
Sogut MS, Venugopal C, Kandemir B, Dag U, Mahendram S, Singh S, Gulfidan G, Arga KY, Yilmaz B, Kurnaz IA. ETS-Domain Transcription Factor Elk-1 Regulates Stemness Genes in Brain Tumors and CD133+ BrainTumor-Initiating Cells. J Pers Med 2021; 11:jpm11020125. [PMID: 33672811 PMCID: PMC7917801 DOI: 10.3390/jpm11020125] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/04/2021] [Accepted: 02/09/2021] [Indexed: 12/22/2022] Open
Abstract
Elk-1, a member of the ternary complex factors (TCFs) within the ETS (E26 transformation-specific) domain superfamily, is a transcription factor implicated in neuroprotection, neurodegeneration, and brain tumor proliferation. Except for known targets, c-fos and egr-1, few targets of Elk-1 have been identified. Interestingly, SMN, SOD1, and PSEN1 promoters were shown to be regulated by Elk-1. On the other hand, Elk-1 was shown to regulate the CD133 gene, which is highly expressed in brain-tumor-initiating cells (BTICs) and used as a marker for separating this cancer stem cell population. In this study, we have carried out microarray analysis in SH-SY5Y cells overexpressing Elk-1-VP16, which has revealed a large number of genes significantly regulated by Elk-1 that function in nervous system development, embryonic development, pluripotency, apoptosis, survival, and proliferation. Among these, we have shown that genes related to pluripotency, such as Sox2, Nanog, and Oct4, were indeed regulated by Elk-1, and in the context of brain tumors, we further showed that Elk-1 overexpression in CD133+ BTIC population results in the upregulation of these genes. When Elk-1 expression is silenced, the expression of these stemness genes is decreased. We propose that Elk-1 is a transcription factor upstream of these genes, regulating the self-renewal of CD133+ BTICs.
Collapse
Affiliation(s)
- Melis Savasan Sogut
- Institute of Biotechnology, Gebze Technical University, 41400 Kocaeli, Turkey; (M.S.S.); (B.K.)
- Molecular Neurobiology Laboratory (AxanLab), Department of Molecular Biology and Genetics, Gebze Technical University, 41400 Kocaeli, Turkey
- Biotechnology Graduate Program, Graduate School of Sciences, Yeditepe University, 26 Agustos Yerlesimi, Kayisdagi, 34755 Istanbul, Turkey;
| | - Chitra Venugopal
- Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON L8S 4K1, Canada; (C.V.); (S.M.); (S.S.)
| | - Basak Kandemir
- Institute of Biotechnology, Gebze Technical University, 41400 Kocaeli, Turkey; (M.S.S.); (B.K.)
- Molecular Neurobiology Laboratory (AxanLab), Department of Molecular Biology and Genetics, Gebze Technical University, 41400 Kocaeli, Turkey
- Biotechnology Graduate Program, Graduate School of Sciences, Yeditepe University, 26 Agustos Yerlesimi, Kayisdagi, 34755 Istanbul, Turkey;
| | - Ugur Dag
- Biotechnology Graduate Program, Graduate School of Sciences, Yeditepe University, 26 Agustos Yerlesimi, Kayisdagi, 34755 Istanbul, Turkey;
| | - Sujeivan Mahendram
- Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON L8S 4K1, Canada; (C.V.); (S.M.); (S.S.)
| | - Sheila Singh
- Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON L8S 4K1, Canada; (C.V.); (S.M.); (S.S.)
| | - Gizem Gulfidan
- Department of Bioengineering, Marmara University, 34722 Istanbul, Turkey; (G.G.); (K.Y.A.)
| | - Kazim Yalcin Arga
- Department of Bioengineering, Marmara University, 34722 Istanbul, Turkey; (G.G.); (K.Y.A.)
| | - Bayram Yilmaz
- Department of Physiology, Faculty of Medicine, Yeditepe University, 26 Agustos Yerlesimi, Kayisdagi, 34755 Istanbul, Turkey
- Correspondence: (B.Y.); (I.A.K.)
| | - Isil Aksan Kurnaz
- Institute of Biotechnology, Gebze Technical University, 41400 Kocaeli, Turkey; (M.S.S.); (B.K.)
- Molecular Neurobiology Laboratory (AxanLab), Department of Molecular Biology and Genetics, Gebze Technical University, 41400 Kocaeli, Turkey
- Correspondence: (B.Y.); (I.A.K.)
| |
Collapse
|
48
|
Chokshi C, Tieu D, Brown K, Venugopal C, Liu L, Kuhlman L, Chan K, Tong A, Savage N, McKenna D, Aghaei N, Subapanditha M, Salamoun JM, Rossotti M, Wipf P, Sharlow E, Lazo JS, Kislinger T, Henry K, Lu Y, Moffat J, Singh SK. Abstract PR009: The functional genomic landscape of recurrent glioblastoma. Cancer Immunol Res 2021. [DOI: 10.1158/2326-6074.tumimm20-pr009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Glioblastoma (GBM) is a highly fatal brain cancer where mortality is predominantly caused by disease recurrence and lack of second-line therapies. Here, utilizing genome-wide CRISPR-Cas9 screening, we uncover treatment-based conditional genetic interactions modulating sensitivity to combined radiation therapy (RT) and temozolomide (TMZ), the standard of care treatment administered to over 70% of glioblastoma patients. To investigate therapy-induced changes in the functional landscape of glioblastoma stem cells (GSCs) without confounding patient-to-patient differences, we systematically mapped genetic dependencies in patient-matched pre-treatment primary and post-treatment recurrent GSCs. This comparison highlights a remodelling of genes and pathways regulating tumor cell survival at disease relapse, arming recurrent GSCs with newly acquired genetic drivers and further loss of tumor suppressors. Among these genes, we identify PTP4A2, encoding protein tyrosine phosphatase 4A2, as a major regulator of stemness and tumorigenicity in recurrent GSCs. Genetic perturbation or pharmacological inhibition of PTP4A2 influences the phosphorylation status and expression of interacting proteins belonging to axonal guidance pathways, as phosphoproteomic studies showed specific enrichment in axon guidance regulator Roundabout Guidance Receptor 1 (ROBO1) in recurrent GSCs. We therefore designed and developed efficacious Camelid biotinylated single-domain antibody (bio-sdAb) and tetrameric complexes targeting human ROBO1 (MKRo-20). Subsequently, we orthotopically engrafted recurrent GSCs into immunocompromised mice and administered local treatments of tetrameric MKRo-20. All mice treated with tetrameric MKRo-20 were rendered tumor free, suggesting that modulation of ROBO1 with bio-sdAbs presents a new immunotherapeutic strategy to target recurrent glioblastoma. Our work reveals a context-specific dependence on axonal guidance through a PTP4A2-ROBO axis in recurrent glioblastoma, highlighting new avenues of therapeutic intervention for second-line therapy in GBM.
This abstract is also being presented as PO025.
Citation Format: Chirayu Chokshi, David Tieu, Kevin Brown, Chitra Venugopal, Lina Liu, Laura Kuhlman, Katherine Chan, Amy Tong, Neil Savage, Dillon McKenna, Nikoo Aghaei, Minomi Subapanditha, Joseph M Salamoun, Martin Rossotti, Peter Wipf, Elizabeth Sharlow, John S. Lazo, Thomas Kislinger, Kevin Henry, Yu Lu, Jason Moffat, Sheila K. Singh. The functional genomic landscape of recurrent glioblastoma [abstract]. In: Abstracts: AACR Virtual Special Conference: Tumor Immunology and Immunotherapy; 2020 Oct 19-20. Philadelphia (PA): AACR; Cancer Immunol Res 2021;9(2 Suppl):Abstract nr PR009.
Collapse
Affiliation(s)
| | - David Tieu
- 2University of Toronto, Toronto, ON, Canada,
| | - Kevin Brown
- 2University of Toronto, Toronto, ON, Canada,
| | | | - Lina Liu
- 1McMaster University, Hamilton, ON, Canada,
| | | | | | - Amy Tong
- 2University of Toronto, Toronto, ON, Canada,
| | | | | | | | | | | | | | - Peter Wipf
- 3University of Pittsburgh, Pittsburgh, PA, USA,
| | | | - John S. Lazo
- 5University of Virginia, Charlottesville, VA, USA
| | | | | | - Yu Lu
- 1McMaster University, Hamilton, ON, Canada,
| | | | | |
Collapse
|
49
|
Salim SK, Wei J, Dimitrov V, Chen K, Venugopal C, Vora P, Moffat J, Singh SK. Abstract PO081: Systematic Generation of Allogeneic Immune-targeting Modalities for Glioblastoma. Cancer Immunol Res 2021. [DOI: 10.1158/2326-6074.tumimm20-po081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Glioblastoma (GBM) is one of the most common brain tumors in adults. Despite a standard-of-care including surgery and chemoradiotherapy, patients only live to a median of 15 months. This may be due to extensive spatiotemporal, intratumoral heterogeneity observed. This is thought to be created by a small population of stem-like cells marked by expression of CD133. CD133 has been shown to correlate with poor patient prognosis, metastases, relapse and worse overall survival in GBM. We thus created an anti-CD133 CAR-T therapy. Our CD133-targeting CAR-T (CART133) has shown great efficacy and in our patient-derived models of GBM. It has also exhibited safety in sparing healthy CD133-expressing cells, particularly, hematopoietic stem and progenitor cells, in our humanized model of hematopoiesis. However, in looking to the clinic, the generation of autologous CAR-Ts may be difficult as it requires sufficient numbers of a patient's own T-cells who may be immunocompromised after first-line therapy. Thus, we propose to generate allogeneic CAR-Ts that target CD133 (AlloCART133) from healthy donor T- cells. AlloCAR-T cells are genetically-edited to abrogate the T-cell receptor (TCR) to avoid graft-versus- host disease, a phenomenon in which immune-mismatch causes donor tissues to attack recipient tissues. These cells can thus be safe for a recipient while also maintaining their anti-tumor activity. AlloCART133 thus presents a clinically-relevant, off-the-shelf therapy for patients with GBM.
Citation Format: Sabra K. Salim, Jiarun Wei, Vassil Dimitrov, Katherine Chen, Chitra Venugopal, Parvez Vora, Jason Moffat, Sheila K. Singh. Systematic Generation of Allogeneic Immune-targeting Modalities for Glioblastoma [abstract]. In: Abstracts: AACR Virtual Special Conference: Tumor Immunology and Immunotherapy; 2020 Oct 19-20. Philadelphia (PA): AACR; Cancer Immunol Res 2021;9(2 Suppl):Abstract nr PO081.
Collapse
Affiliation(s)
| | - Jiarun Wei
- 2University of Toronto, Toronto, ON, Canada
| | | | | | | | - Parvez Vora
- 1McMaster University, Hamilton, Ontario, Canada,
| | | | | |
Collapse
|
50
|
Bakhshinyan D, Savage N, Salim SK, Venugopal C, Singh SK. The Strange Case of Jekyll and Hyde: Parallels Between Neural Stem Cells and Glioblastoma-Initiating Cells. Front Oncol 2021; 10:603738. [PMID: 33489908 PMCID: PMC7820896 DOI: 10.3389/fonc.2020.603738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 11/24/2020] [Indexed: 12/15/2022] Open
Abstract
During embryonic development, radial glial precursor cells give rise to neural lineages, and a small proportion persist in the adult mammalian brain to contribute to long-term neuroplasticity. Neural stem cells (NSCs) reside in two neurogenic niches of the adult brain, the hippocampus and the subventricular zone (SVZ). NSCs in the SVZ are endowed with the defining stem cell properties of self-renewal and multipotent differentiation, which are maintained by intrinsic cellular programs, and extrinsic cellular and niche-specific interactions. In glioblastoma, the most aggressive primary malignant brain cancer, a subpopulation of cells termed glioblastoma stem cells (GSCs) exhibit similar stem-like properties. While there is an extensive overlap between NSCs and GSCs in function, distinct genetic profiles, transcriptional programs, and external environmental cues influence their divergent behavior. This review highlights the similarities and differences between GSCs and SVZ NSCs in terms of their gene expression, regulatory molecular pathways, niche organization, metabolic programs, and current therapies designed to exploit these differences.
Collapse
Affiliation(s)
- David Bakhshinyan
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Neil Savage
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Sabra Khalid Salim
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Chitra Venugopal
- Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Sheila K Singh
- Department of Biochemistry and Biomedical Sciences, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada.,Department of Surgery, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| |
Collapse
|