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肿瘤相关巨噬细胞在食管鳞癌中的作用机制及靶向治疗前景

Tumor Associated Macrophages in Esophageal Squamous Cell Carcinoma: Underlying Mechanisms and Targeted Therapy Perspectives

  • 摘要: 肿瘤相关巨噬细胞(tumor-associated macrophages, TAMs)是塑造食管鳞癌免疫抑制性微环境、驱动其恶性进展的核心枢纽。本文系统性阐述了其通过促进肿瘤增殖、血管生成、转移及诱导治疗抵抗等多种作用机制,参与食管鳞癌肿瘤进展。靶向TAMs治疗策略已从早期的清除与重编程,拓展至功能重塑、吞噬检查点干预乃至靶向前体细胞等新兴方向。然而,受限于肿瘤微环境的代偿性与可塑性,单一疗法疗效有限,因此,将TAMs靶向治疗与现有免疫检查点抑制剂、化疗、抗血管生成治疗联合应用,已成为逆转免疫抑制、克服临床耐药的重要途径。未来需进一步借助前沿技术解析TAMs异质性,并推动智能药物递送与生物标志物的临床转化研究,以期最终推动食管鳞癌治疗体系的发展与优化。

     

    Abstract: Tumor associated macrophages (TAMs) are pivotal in shaping the immunosuppressive tumor microenvironment and driving the malignant progression of esophageal squamous cell carcinoma (ESCC). This article provides a systematic review of the mechanisms by which TAMs contribute to ESCC pathogenesis, with a focus on their roles in promoting tumor cell proliferation, angiogenesis, metastasis, and inducing therapy resistance. The evolution of TAMs-targeted strategies, from early depletion and repolarization to emerging approaches such as functional remodeling, phagocytosis checkpoint intervention, and precursor cell targeting, is comprehensively discussed. However, the compensatory and plastic nature of the tumor microenvironment often limits the efficacy of monotherapies. Consequently, combining TAMs-directed therapies with existing modalities—including immune checkpoint inhibitors, chemotherapy, and anti-angiogenic agents—has emerged as a crucial strategy to reverse immunosuppression and overcome clinical resistance. Future research should leverage cutting-edge technologies to decipher TAMs heterogeneity and advance the clinical translation of intelligent drug delivery systems and predictive biomarkers. This review aims to furnish a foundational resource for optimizing the therapeutic landscape of ESCC.

     

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