Abstract
Numerous studies have explored the various functions of Slc40a1 in cancer development. However, the role of Slc40a1 in primary glioblastoma requires further investigation. Initially, we observed that GBM patients with high Slc40a1 expression had a more favorable prognosis than those with low Slc40a1 expression, as evidenced by an analysis of the TIMER database. Subsequent analysis using the cancer genome atlas (TCGA) database enabled us to identify potential underlying mechanisms involved. Further analyses, including GO, KEGG, GSEA, immune infiltration, and correlation analyses, revealed that Slc40a1 primarily affected cytokine interactions, particularly with Ccl14 and Il18, resulting in changes in the immune microenvironment and ultimately leading to a better prognosis in GBM patients. We validated our findings by examining a tissue microarray with 180 samples and confirmed that GBM patients with high SLC40A1 protein expression exhibited more favorable prognostic outcomes than those with low SLC40A1 protein expression. Immunofluorescence analysis also revealed a significant correlation between SLC40A1 protein expression and the protein expression of IL18 and CCL14. These findings suggest that Slc40a1 may play a role in GBM pathogenesis by modulating the tumor immune microenvironment through the regulation of Il18 and Ccl14. Hence, targeting Slc40a1 might offer potential benefits for immunotherapeutic interventions and prognostic assessments in GBM patients.
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Data Availability
TCGA and the single-cell portal are public databases. The patients whose samples are included in the databases have already provided informed consent. Users are permitted to download relevant data for free for research and to publish relevant articles. This study is based on open source data in public databases, and our tissue chip was provided by Shanghai Yan Tuo Biotechnology Co., Ltd.; therefore, ethics approval is unnecessary.
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Acknowledgements
We are grateful to TCGA, Oncomine, GEPIA2, TIMER2.0, CIBERSORT, EPIC, and single-cell portal databases for providing platforms for the analysis of public datasets.
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This research was funded by the National Natural Science Foundation of China (No. 82171832 and No.82371839) and the Shanghai Science and Technology Development Foundation (No. 20Z11900100).
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Conceptualization, JH.J., RQ.D. and JL.Y.; methodology, JH.J., RQ.D., C.L. and JL.Y.; software, JH.J., RQ.D., JL.Z. and JQ.Y.; validation, JH.J., RQ.D. and JQ.Y.; formal analysis, JH.J., RQ.D., JL.Z. and JQ.Y.; investigation, JH.J. and JL.Y.; resources, C.L.; data curation, JH.J., RQ.D.; writing—original draft preparation, JH.J., RQ.D. and JL.Y.; writing—review and editing, JH.J., RQ.D. and JQ.Y.; visualization, C.L. and JL.Y.; supervision, C.L.; project administration, C.L. and JL.Y.; and funding acquisition, C.L. All authors have read and agreed to the published version of the manuscript.
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Jiang, J., Duan, R., Zhu, J. et al. Influence of SLC40A1 on Cytokine Interactions and Immune Infiltration in Glioblastoma. Neuromol Med 26, 21 (2024). https://doi.org/10.1007/s12017-024-08789-y
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DOI: https://doi.org/10.1007/s12017-024-08789-y