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Theranostics

Theranostics

IF: 13.3
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The CEBPB + glioblastoma subcluster specifically drives the formation of M2 tumor-associated macrophages to promote malignancy growth.

Published:2 July 2024 DOI: 10.7150/thno.93473 PMID: 38994023
Yongchang Yang,?Xingyu Jin,?Yang Xie,?Chunlan Ning,?Yiding Ai,?Haotian Wei,?Xing Xu,?Xianglian Ge,?Tailong Yi,?Qiang Huang,?Xuejun Yang,?Tao Jiang,?Xiaoguang Wang,?Yingzhe Piao,?Xun Jin

Abstract

Rationale: The heterogeneity of tumor cells within the glioblastoma (GBM) microenvironment presents a complex challenge in curbing GBM progression. Understanding the specific mechanisms of interaction between different GBM cell subclusters and non-tumor cells is crucial. Methods: In this study, we utilized a comprehensive approach integrating glioma single-cell and spatial transcriptomics. This allowed us to examine the molecular interactions and spatial localization within GBM, focusing on a specific tumor cell subcluster, GBM subcluster 6, and M2-type tumor-associated macrophages (M2 TAMs). Results: Our analysis revealed a significant correlation between a specific tumor cell subcluster, GBM cluster 6, and M2-type TAMs. Further in vitro and in vivo experiments demonstrated the specific regulatory role of the CEBPB transcriptional network in GBM subcluster 6, which governs its tumorigenicity, recruitment of M2 TAMs, and polarization. This regulation involves molecules such as MCP1 for macrophage recruitment and the SPP1-Integrin αvβ1-Akt signaling pathway for M2 polarization. Conclusion: Our findings not only deepen our understanding of the formation of M2 TAMs, particularly highlighting the differential roles played by heterogeneous cells within GBM in this process, but also provided new insights for effectively controlling the malignant progression of GBM.

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