【岡山大學】以「偽低氧」重新啟動沉睡能力〜鐵動員型螯合劑引發免疫力與修復力的同時覺醒〜
岡山大學闡明鐵螯合劑誘導「偽低氧」的機制,同時喚醒免疫力與修復力。
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- 📰 發表: 2026年3月30日 07:43
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岡山大學與富山大學的共同研究成果發布。
2026(令和8)年 3月 29日
國立大學法人岡山大學
<發表重點>
我們闡明了使用特定的「鐵動員型鐵螯合劑」可阻斷細胞氧氣感測酵素的功能,誘導細胞產生「功能性偽低氧」狀態,即使在氧氣充足的環境下,細胞也會誤以為缺氧。
當這個「偽低氧警報」響起時,細胞的緊急開關會被啟動,同時釋放並重新啟動體內原本沉睡的強大「免疫力(抗腫瘤效果)」和「組織修復力(神經再生)」。
此方法已顯示出能提高對現有免疫治療效果不佳的大腸癌和肺癌的治療效果。此外,在老年小鼠模型中,還證實了能在不引起腦部發炎的情況下抑制與老化相關的工作記憶下降。這有望成為治療難治性疾病的全新平台治療概念。
◆概要
國立大學法人岡山大學(總部:岡山市北區,校長:那須保友)學術研究院醫齒藥學域病理學(免疫病理)的大原利章副教授、松川昭博教授,學術研究院醫療開發領域(消化器外科)的野間和廣講師,學術研究院醫齒藥學域(齒:口腔病理學)的河合穗高副教授,學術研究院教育研究管理領域的岩崎良章教授,富山大學學術研究部醫學系腦神經內科的山下徹教授,以及名古屋大學研究所工學研究科的笠井智成特任副教授等組成的共同研究團隊,透過使用鐵動員型鐵螯合劑人為誘導「功能性偽低氧」,揭示了能大幅提升體內沉睡的免疫能力和修復能力,從而增強對癌症的抗腫瘤免疫反應,並抑制認知功能下降。
研究團隊對大腸癌和肺癌的小鼠模型口服鐵動員型鐵螯合劑(如 Roxadustat 和 SP10 等)以誘導偽低氧。
結果顯示,促進了活化免疫細胞的主要細胞因子(IL-2)的分泌,並成功地與現有的免疫檢查點抑制劑(抗 PD-1 抗體)產生協同增效作用。
此外,將相同方法應用於老年小鼠,證實了能在不引起腦部有害發炎的情況下選擇性地活化神經再生訊號,抑制了與老化相關的工作記憶下降。
運用「功能性偽低氧」這一新概念,有望發展成為治療癌症和失智症等當代棘手疾病的下一代創新療法,其方式並非從外部攻擊疾病,而是最大限度地發揮人體固有的力量來應對疾病。
此研究成果已分別發表於三份國際學術期刊。
此資訊由岡山大學於 2026 年 3 月 26 日公開。
常見問題
What is 'functional pseudo-hypoxia'?
Functional pseudo-hypoxia is a state where cells mistakenly perceive a lack of oxygen, even when sufficient oxygen is present. This is induced by blocking the function of cellular oxygen sensor enzymes, often through the use of specific iron chelators.
How does inducing pseudo-hypoxia help the body?
When cells sense 'pseudo-hypoxia,' it triggers an emergency response. This response activates the body's dormant immune capabilities, such as anti-tumor effects, and repair mechanisms, like nerve regeneration, effectively rebooting these functions.
What types of diseases could this new approach potentially treat?
This approach shows promise for treating difficult diseases such as colorectal cancer, lung cancer, and age-related cognitive decline (like memory loss) without causing harmful inflammation.
What are iron mobilizing iron chelators?
These are specific types of compounds that interact with iron in the body. In this research, they are used to block oxygen sensor enzymes, thereby inducing the pseudo-hypoxia state. Examples mentioned include Roxadustat and SP10.
What is the significance of this research for future medicine?
This research introduces a novel therapeutic concept that leverages the body's own latent abilities rather than solely relying on external interventions. It could lead to a new generation of treatments for intractable diseases by enhancing natural immunity and repair functions.
What is the relationship between this research and existing cancer treatments?
The study found that inducing pseudo-hypoxia can synergistically enhance the effectiveness of existing immunotherapies, such as immune checkpoint inhibitors (anti-PD-1 antibodies), for cancers like colorectal and lung cancer.
Can this method help with aging-related cognitive decline?
Yes, the research demonstrated that applying this method to aged mice suppressed the decline in working memory associated with aging, and importantly, did so without causing inflammation in the brain.