Abstract
Purpose
The anti-inflammatory environment of glioma reduces the efficacy of immunotherapies. Therefore, it is vital to transform the immunosuppressive microenvironment of glioma into a pro-inflammatory environment. Sialic acid-binding immunoglobulin-type lectins (Siglecs) can serve as immune checkpoint targets that enhance the anti-tumor immune response. However, the roles of Siglecs in the glioma microenvironment are unknown. This study was conducted to identify targets to inhibit the anti-inflammatory environment to improve therapeutic outcomes in patients with glioma.
Methods
We analyzed the regulatory effect of prognosis-related Siglecs identified from data available in The Cancer Genome Atlas database (TCGA) and China Glioma Genome Atlas Data portal on the immunosuppressive microenvironment of glioma. The effects of prognosis-related Siglecs on the glioma microenvironment were investigated by determining the Pearson correlation coefficients of the Siglecs in transcriptome data from the TCGA database.
Results
Siglec-1, -9, -10, and -14 were closely associated with the prognosis of patients with glioma. The expression of these four Siglecs was significantly increased in the high-risk group and positively correlated with anti-inflammatory cytokine levels in the glioma microenvironment.
Conclusion
Our study provides insights into the effects of prognosis-related Siglecs in glioma immunotherapy, suggesting that targeted prognosis-related Siglecs can modify the microenvironment of glioma and improve the sensitivity of patients with glioma to immunotherapy.
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Abbreviations
- CTLA-4:
-
Cytotoxic T-lymphocyte-associated protein 4
- PD-1:
-
Programmed cell death protein 1
- NK:
-
Natural killer cells
- HIV:
-
Human immunodeficiency virus
- HBV:
-
Hepatitis B virus
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Acknowledgements
Special thanks to Professor Dong Zhou for his guidance, Mr. Zhaohua Zeng for his help, and Dr. Yong Yang and Dr. Peng Wang for their financial support.
Funding
This work was financially supported by Natural Science Foundation of China (NO.81901250), High-level Hospital Construction Project of Guangdong Province of China (NO. DFJH201924) and Natural Science Foundation of Guangdong Province of China (NO.2018A0303130236).
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HL and JZ: extracted the data; RM: methodology, formal analysis, recourses; LZ and GL: software; YY: project administration, funding acquisition; PW: supervision; RM: writing-original draft. All authors reviewed the final manuscript.
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432_2021_3762_MOESM2_ESM.pdf
Supplementary file2 (PDF 427 KB) Supplementary Fig. 2 Risk score analysis of Siglecs family four-gene prognostic model in CGGA glioma cohort. (A) Survival analysis according to risk score; (B) ROC analysis; (C) heat map; (D) risk score and (E)survival status of patients.
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Supplementary file3 (PDF 323 KB) Supplementary Fig. 3 Risk score of glioma patients with different clinical characteristics (A-E). Multivariate Cox regression analyses of clinical characteristics and risk score associated with OS in the TCGA cohort(F). Multivariate Cox regression analyses of clinical characteristics and risk score associated with OS in the CGGA cohort(G).
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Supplementary file4 (PDF 457 KB) Supplementary Fig. 4 Validation in CGGA. (A)The immune landscapes of high- and low-risk groups. (B) Comparison of immune cell infiltration between high- and low-risk groups.
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Supplementary file5 (PDF 470 KB) Supplementary Fig.5 Analysis of immune cell infiltration. (A) The immune landscapes of IDH-mutant and IDH-wildtype groups. (B) Comparison of immune cell infiltration between IDH-mutant and IDH-wildtype groups.
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Supplementary file6 (PDF 470 KB) Supplementary Fig.6 (A) The immune landscapes of 1p/19q-codel and 1p/19q non-codel groups. (B) Comparison of immune cell infiltration between 1p/19q-codel and 1p/19q non-codel groups.
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Mao, R., Zhou, L., Yang, Y. et al. Regulation of prognosis-related Siglecs in the glioma microenvironment. J Cancer Res Clin Oncol 147, 3343–3357 (2021). https://doi.org/10.1007/s00432-021-03762-9
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DOI: https://doi.org/10.1007/s00432-021-03762-9