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<p>Numerous ubiquitination-related proteases (URPs) have been identified as facilitators of disease progression through the disruption of ubiquitination homeostasis in substrate proteins. Notably, some URPs have exhibited non-classical biological functions. In this study, we experimentally elucidate the role of the E3 ubiquitin ligase IRF2BPL as transcriptional activator that promotes malignant phenotypes in esophageal squamous cell carcinoma (ESCC) and inhibits the infiltration of various immune cells within the tumor microenvironment. Specifically, we found that IRF2BPL is highly expressed in ESCC cells and promotes <i>IGFBP2</i> transcription, thereby facilitating ESCC development both in vivo and in vitro. Moreover, the chemical drug ONC201 was shown to effectively impede ESCC progression induced by the hyperactive IRF2BPL-IGFBP2 axis in tumor cells. Collectively, our findings verified that the IRF2BPL-IGFBP2 axis plays a critical role in enhancing ESCC progression by increasing the malignancy of ESCC cells and fostering an immune-deficient tumor microenvironment. Targeting the IRF2BPL-IGFBP2 axis may represent a promising therapeutic strategy for ESCC.</p>

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IRF2BPL transcriptionally regulates IGFBP2 to promote tumor progression and suppresses immune cell infiltration in esophageal squamous cell carcinoma

  • 期刊论文

  • 发表日期：

    2025年12月18日

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  • Yueguang Wu,
  • Heyang Cui,
  • Longlong Wang,
  • Ning Ding,
  • Yongjia Weng,
  • Yikun Cheng,
  • Shanshan Bi,
  • Heng Xiao,
  • Mingwei Gao,
  • Huijuan Liu,
  • Qiqin Song,
  • Weimin Zhang,
  • Yongping Cui

摘要

Numerous ubiquitination-related proteases (URPs) have been identified as facilitators of disease progression through the disruption of ubiquitination homeostasis in substrate proteins. Notably, some URPs have exhibited non-classical biological functions. In this study, we experimentally elucidate the role of the E3 ubiquitin ligase IRF2BPL as transcriptional activator that promotes malignant phenotypes in esophageal squamous cell carcinoma (ESCC) and inhibits the infiltration of various immune cells within the tumor microenvironment. Specifically, we found that IRF2BPL is highly expressed in ESCC cells and promotes IGFBP2 transcription, thereby facilitating ESCC development both in vivo and in vitro. Moreover, the chemical drug ONC201 was shown to effectively impede ESCC progression induced by the hyperactive IRF2BPL-IGFBP2 axis in tumor cells. Collectively, our findings verified that the IRF2BPL-IGFBP2 axis plays a critical role in enhancing ESCC progression by increasing the malignancy of ESCC cells and fostering an immune-deficient tumor microenvironment. Targeting the IRF2BPL-IGFBP2 axis may represent a promising therapeutic strategy for ESCC.