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<p>Recent advances in next-generation sequencing and bioinformatics have driven growing interest in the distinct roles of intratumoral microbiota, particularly intracellular bacteria, during tumor evolution. These bacteria increase the likelihood of metastasis, play important roles in cancer progression, and impact therapy efficiency. The present review explores the sources, mechanisms of invasion into cancer cells, and potential survival strategies of intracellular bacteria in neoplasms, highlighting their critical role in cancer development. We also examine the heterogeneity and intricate interplay of intratumoral microbial communities with immune and cancer cells, emphasizing their potential roles in modulating host genetics, epigenetics, and immunity. Finally, we discuss novel approaches to targeting intracellular bacteria, particularly engineered drug delivery systems, and synthetic biology, which aim to enhance bacterial clearance, reprogram the tumor immune microenvironment, and enhance the efficacy of chemotherapy and immunotherapy. As a result, this review provides new insights to guide future investigations and support the development of microbiota-based interventions in oncology.</p>

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Advancements in understanding tumor-resident bacteria and their application in cancer therapy

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月25日

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  • Yi-Chen Luo,
  • Xiu-Ting Huang,
  • Rui Wang,
  • Yu-Jing Lin,
  • Jia-Xin Sun,
  • Ke-Feng Li,
  • De-Yun Wang,
  • Yan Yan,
  • Yong-Kang Qiao

摘要

Recent advances in next-generation sequencing and bioinformatics have driven growing interest in the distinct roles of intratumoral microbiota, particularly intracellular bacteria, during tumor evolution. These bacteria increase the likelihood of metastasis, play important roles in cancer progression, and impact therapy efficiency. The present review explores the sources, mechanisms of invasion into cancer cells, and potential survival strategies of intracellular bacteria in neoplasms, highlighting their critical role in cancer development. We also examine the heterogeneity and intricate interplay of intratumoral microbial communities with immune and cancer cells, emphasizing their potential roles in modulating host genetics, epigenetics, and immunity. Finally, we discuss novel approaches to targeting intracellular bacteria, particularly engineered drug delivery systems, and synthetic biology, which aim to enhance bacterial clearance, reprogram the tumor immune microenvironment, and enhance the efficacy of chemotherapy and immunotherapy. As a result, this review provides new insights to guide future investigations and support the development of microbiota-based interventions in oncology.