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Yao H, Liu J, Zhang C, Shao Y, Li X, Yu Z, Huang Y. Apatinib inhibits glioma cell malignancy in patient-derived orthotopic xenograft mouse model by targeting thrombospondin 1/myosin heavy chain 9 axis. Cell Death Dis 2021; 12:927. [PMID: 34635636 PMCID: PMC8505401 DOI: 10.1038/s41419-021-04225-2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 09/09/2021] [Accepted: 09/23/2021] [Indexed: 12/13/2022]
Abstract
We determined the antitumor mechanism of apatinib in glioma using a patient-derived orthotopic xenograft (PDOX) glioma mouse model and glioblastoma (GBM) cell lines. The PDOX mouse model was established using tumor tissues from two glioma patients via single-cell injections. Sixteen mice were successfully modeled and randomly divided into two equal groups (n = 8/group): apatinib and normal control. Survival analysis and in vivo imaging was performed to determine the effect of apatinib on glioma proliferation in vivo. Candidate genes in GBM cells that may be affected by apatinib treatment were screened using RNA-sequencing coupled with quantitative mass spectrometry, data mining of The Cancer Genome Atlas, and Chinese Glioma Genome Atlas databases, and immunohistochemistry analysis of clinical high-grade glioma pathology samples. Quantitative reverse transcription-polymerase chain reaction (qPCR), western blotting, and co-immunoprecipitation (co-IP) were performed to assess gene expression and the apatinib-mediated effect on glioma cell malignancy. Apatinib inhibited the proliferation and malignancy of glioma cells in vivo and in vitro. Thrombospondin 1 (THBS1) was identified as a potential target of apatinib that lead to inhibited glioma cell proliferation. Apatinib-mediated THBS1 downregulation in glioma cells was confirmed by qPCR and western blotting. Co-IP and mass spectrometry analysis revealed that THBS1 could interact with myosin heavy chain 9 (MYH9) in glioma cells. Simultaneous THBS1 overexpression and MYH9 knockdown suppressed glioma cell invasion and migration. These data suggest that apatinib targets THBS1 in glioma cells, potentially via MYH9, to inhibit glioma cell malignancy and may provide novel targets for glioma therapy.
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Affiliation(s)
- Hui Yao
- Department of Neurosurgery, the First Affiliated Hospital of Soochow University, No188, Shizi Street, Suzhou, 215007, Jiangsu, China
| | - Jiangang Liu
- Department of Neurosurgery, the First Affiliated Hospital of Soochow University, No188, Shizi Street, Suzhou, 215007, Jiangsu, China
| | - Chi Zhang
- Department of Neurosurgery, the First Affiliated Hospital of Soochow University, No188, Shizi Street, Suzhou, 215007, Jiangsu, China
| | - Yunxiang Shao
- Department of Neurosurgery, the First Affiliated Hospital of Soochow University, No188, Shizi Street, Suzhou, 215007, Jiangsu, China
| | - Xuetao Li
- Department of Neurosurgery, Dushu Lake Hospital Affiliated of Soochow University, Suzhou, 215124, Jiangsu, China
| | - Zhengquan Yu
- Department of Neurosurgery, the First Affiliated Hospital of Soochow University, No188, Shizi Street, Suzhou, 215007, Jiangsu, China.
| | - Yulun Huang
- Department of Neurosurgery, the First Affiliated Hospital of Soochow University, No188, Shizi Street, Suzhou, 215007, Jiangsu, China.
- Department of Neurosurgery, Dushu Lake Hospital Affiliated of Soochow University, Suzhou, 215124, Jiangsu, China.
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