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Understanding the tumor microenvironment (TME) and its regulators, such as the expression of N6\u2010methyladenosine (m6A) regulators, may improve therapeutic outcomes. This study focuses on the role of IGF2BP2, an m6A reader, in modulating the BC TME.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Transcriptomic and single\u2010cell RNA\u2010seq data from public databases were analyzed to identify BC subgroups and investigate IGF2BP2's role in the TME. Clustering and PCA identified key m6A regulators. NicheNet and SCENIC analyses were used to predict cell\u2013cell interactions and transcriptional regulators, respectively. IGF2BP2's role in macrophage recruitment was validated via co\u2010culture experiments and RNA sequencing.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Unsupervised clustering identified BC subgroups with distinct TME characteristics, with IGF2BP2 emerging as a key regulator associated with poor prognosis and reduced response to immunotherapy. Single\u2010cell analysis revealed IGF2BP2's high expression in the GE\u20109 epithelial subpopulation, characterized by immune evasion features and cytokine\u2010mediated macrophage recruitment. NicheNet analysis showed that GE\u20109 cells interact with monocyte\/macrophage populations through cytokine signaling. Co\u2010culture experiments confirmed IGF2BP2's role in recruiting macrophages, partially mediated by CCL2. Furthermore, IGF2BP2 expression was linked to immunosuppressive M2\u2010like and SPP1+ macrophages, contributing to an angiogenesis\u2010promoting and immunosuppressive TME.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>IGF2BP2 shapes the BC TME by modulating macrophage infiltration and polarization, leading to an immunosuppressive microenvironment that hinders immunotherapy. Targeting IGF2BP2 could enhance the efficacy of current therapies and improve patient outcomes.<\/jats:p><\/jats:sec>","DOI":"10.1002\/cam4.70506","type":"journal-article","created":{"date-parts":[[2024,12,23]],"date-time":"2024-12-23T09:58:59Z","timestamp":1734947939000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["<scp>IGF2BP2<\/scp> Shapes the Tumor Microenvironment by Regulating Monocyte and Macrophage Recruitment in Bladder Cancer"],"prefix":"10.1002","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0660-7802","authenticated-orcid":false,"given":"Jianpeng","family":"Li","sequence":"first","affiliation":[{"name":"Department of Urology First Affiliated Hospital of Xi'an Jiaotong University  Xi'an Shaanxi 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