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Updated: Jan 15, 2026

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由JAK3/STAT1通路调节的AIM2促进了由同时辐射和PD-1阻塞引起的肠壁功能障碍中的PANoptosis
Jingru Chen1, Yuxuan Tao1, Qingxin Wang2
1Department of Radiation Oncology, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, China.
Apoptosis : an international journal on programmed cell death
|October 9, 2025
概括
放射治疗和免疫治疗通过AIM2-介导的PANoptosis引起肠道损伤. 抑制JAK3或TMAO可能会降低这种毒性.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
背景情况:
- 同时进行放射疗法 (RT) 和抗PD-1免疫疗法 (IO) 治疗盆腔,腹腔和背部癌症,但可能导致严重的肠道损伤.
- 目前尚不完全了解RT/IO诱导肠炎背后的机制,这阻碍了有效的治疗策略.
研究的目的:
- 为了调查ABSENT在黑色素瘤2 (AIM2) 中介的PANoptosis在联合RT/IO治疗期间肠壁功能障碍中的作用.
- 确定关键的分子通路和代谢变化,有助于RT/IO诱导的肠炎.
主要方法:
- 利用结肠上皮细胞和小鼠模型来评估PANoptosis,屏障功能和炎症.
- 采用CRISPR-Cas9进行AIM2淘汰,西式涂抹,免疫组织化学,TEER,FITC-dextran透性测定和准向代谢学.
- 研究了JAK3/STAT1通路和胆代谢的改变.
主要成果:
- 结合RT / IO显著增加了肠道上皮损伤,PANoptosis和受损的屏障功能.
- 通过RT / IO,AIM2表达和JAK3 / STAT1通路激活得到了上调.
- AIM2淘汰或JAK3抑制 (AG490) 减弱了PANoptosis和改善了屏障完整性.
- RT/IO 破坏了肠道胆代谢,高水平的三甲基胺N氧化物 (TMAO) 通过上调 JAK3/STAT1 和 AIM2.2,加剧了损伤.
- 用3,3-二甲基-1-butanol (DMB) 减少TMAO可以逆转这些效应.
结论:
- 由JAK3/STAT1通路激活的AIM2驱动的PANoptosis在RT/IO诱导的肠损伤中至关重要.
- 较高的胆代谢和TMAO积累会放大这种损伤.
- 抑制JAK3或TMAO是一个潜在的临床前策略,以减轻RT/IO诱导的肠毒性.
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