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Tonogai EJ, Huang S, Botham RC, Berry MR, Joslyn SK, Daniel GB, Chen Z, Rao J, Zhang X, Basuli F, Rossmeisl JH, Riggins GJ, LeBlanc AK, Fan TM, Hergenrother PJ. Evaluation of a procaspase-3 activator with hydroxyurea or temozolomide against high-grade meningioma in cell culture and canine cancer patients. Neuro Oncol 2021; 23:1723-1735. [PMID: 34216463 PMCID: PMC8485451 DOI: 10.1093/neuonc/noab161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND High-grade meningioma is an aggressive type of brain cancer that is often recalcitrant to surgery and radiotherapy, leading to poor overall survival. Currently, there are no FDA-approved drugs for meningioma, highlighting the need for new therapeutic options, but development is challenging due to the lack of predictive preclinical models. METHODS To leverage the known overexpression of procaspase-3 in meningioma, PAC-1, a blood-brain barrier penetrant procaspase-3 activator, was evaluated for its ability to induce apoptosis in meningioma cells. To enhance the effects of PAC-1, combinations with either hydroxyurea or temozolomide were explored in cell culture. Both combinations were further investigated in small groups of canine meningioma patients and assessed by MRI, and the novel apoptosis tracer, [18F]C-SNAT4, was evaluated in patients treated with PAC-1 + HU. RESULTS In meningioma cell lines in culture, PAC-1 + HU are synergistic while PAC-1 + TMZ show additive-to-synergistic effects. In canine meningioma patients, PAC-1 + HU led to stabilization of disease and no change in apoptosis within the tumor, whereas PAC-1 + TMZ reduced tumor burden in all three canine patients treated. CONCLUSIONS Our results suggest PAC-1 + TMZ as a potentially efficacious combination for the treatment of human meningioma, and also demonstrate the utility of including pet dogs with meningioma as a means to assess anticancer strategies for this common brain tumor.
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Affiliation(s)
- Emily J Tonogai
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Shan Huang
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Rachel C Botham
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Matthew R Berry
- Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | | | - Gregory B Daniel
- Radiology, Department of Small Animal Clinical Sciences, Virgina-Maryland College of Veterinary Medicine, Blacksburg, Virginia, USA
| | - Zixin Chen
- Departments of Radiology and Chemistry, Stanford Medicine, Stanford, California, USA
| | - Jianghong Rao
- Departments of Radiology and Chemistry, Stanford Medicine, Stanford, California, USA
| | - Xiang Zhang
- Chemistry and Synthesis Center, NHLBI, NIH, Bethesda, Maryland, USA
| | - Falguni Basuli
- Chemistry and Synthesis Center, NHLBI, NIH, Bethesda, Maryland, USA
| | - John H Rossmeisl
- Neurology and Neurosurgery, Department of Small Animal Clinical Sciences, Virgina-Maryland College of Veterinary Medicine, Blacksburg, Virginia, USA
| | - Gregory J Riggins
- Department of Neurosurgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Amy K LeBlanc
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Timothy M Fan
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Paul J Hergenrother
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
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