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Hou X, Du H, Deng Y, Wang H, Liu J, Qiao J, Liu W, Shu X, Sun B, Liu Y. Gut microbiota mediated the individualized efficacy of Temozolomide via immunomodulation in glioma. J Transl Med 2023; 21:198. [PMID: 36927689 PMCID: PMC10018922 DOI: 10.1186/s12967-023-04042-5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
BACKGROUND Temozolomide (TMZ) is the preferred chemotherapy strategy for glioma therapy. As a second-generation alkylating agent, TMZ provides superior oral bio-availability. However, limited response rate (less than 50%) and high incidence of drug resistance seriously restricts TMZ's application, there still lack of strategies to increase the chemotherapy sensitivity. METHODS Luci-GL261 glioma orthotopic xenograft model combined bioluminescence imaging was utilized to evaluate the anti-tumor effect of TMZ and differentiate TMZ sensitive (S)/non-sensitive (NS) individuals. Integrated microbiomics and metabolomics analysis was applied to disentangle the involvement of gut bacteria in TMZ sensitivity. Spearman's correlation analysis was applied to test the association between fecal bacteria levels and pharmacodynamics indices. Antibiotics treatment combined TMZ treatment was used to confirm the involvement of gut microbiota in TMZ response. Flow cytometry analysis, ELISA and histopathology were used to explore the potential role of immunoregulation in gut microbiota mediated TMZ response. RESULTS Firstly, gut bacteria composition was significantly altered during glioma development and TMZ treatment. Meanwhile, in vivo anti-cancer evaluation suggested a remarkable difference in chemotherapy efficacy after TMZ administration. Moreover, 16s rRNA gene sequencing and non-targeted metabolomics analysis revealed distinct different gut microbiota and immune infiltrating state between TMZ sensitive and non-sensitive mice, while abundance of differential gut bacteria and related metabolites was significantly correlated with TMZ pharmacodynamics indices. Further verification suggested that gut microbiota deletion by antibiotics treatment could accelerate glioma development, attenuate TMZ efficacy and inhibit immune cells (macrophage and CD8α+ T cell) recruitment. CONCLUSIONS The current study confirmed the involvement of gut microbiota in glioma development and individualized TMZ efficacy via immunomodulation, hence gut bacteria may serve as a predictive biomarker as well as a therapeutic target for clinical TMZ application.
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Affiliation(s)
- Xiaoying Hou
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China.,Cancer Institute, School of Medicine, Jianghan University, Wuhan, China
| | - Hongzhi Du
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, China
| | - Yufei Deng
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China.,Cancer Institute, School of Medicine, Jianghan University, Wuhan, China
| | - Haiping Wang
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China.,Cancer Institute, School of Medicine, Jianghan University, Wuhan, China
| | - Jinmi Liu
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China.,Cancer Institute, School of Medicine, Jianghan University, Wuhan, China
| | - Jialu Qiao
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Wei Liu
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Xiji Shu
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Binlian Sun
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China. .,Cancer Institute, School of Medicine, Jianghan University, Wuhan, China.
| | - Yuchen Liu
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China. .,Cancer Institute, School of Medicine, Jianghan University, Wuhan, China.
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