有序列相似性的家族114成员A1在三阴性乳腺癌中策划免疫逃避
Wenhao Zhang1, Yanzhi Gai2, Mengxue Qiao1
1Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, China.
Signal transduction and targeted therapy
|November 17, 2025
概括
研究人员确定了序列相似性114成员A1 (FAM114A1) 的家族作为免疫逃避和抵抗免疫检查点阻塞 (ICB) 治疗在三阴性乳腺癌 (TNBC) 的关键驱动因素. 向FAM114A1显示了改善TNBC治疗疗效的希望.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 免疫检查点阻塞 (ICB) 疗法在癌症治疗方面取得了重大进展,包括三阴性乳腺癌 (TNBC).
- 然而,很大一部分TNBC患者表现出耐药性或不符合ICB的条件,需要对潜在机制和改进的治疗策略进行研究.
研究的目的:
- 确定TNBC中免疫逃避和ICB耐药性的关键媒介.
- 阐明这些介质对治疗耐药性的分子机制.
- 评估FAM114A1作为TNBC中ICB的潜在治疗标和预测生物标志物.
主要方法:
- 使用CRISPR激活查 (CRISPRa) 来识别参与免疫逃避和ICB抵抗的基因.
- 研究了涉及FAM114A1,p85α,PI3K/AKT通路,E2F4和MTDH的分子机制.
- 在小鼠模型中评估了针对FAM114A1与抗PD-1治疗结合的向FAM114A1的疗效.
- 开发了一个基于FAM114A1的签名来预测患者对ICB的反应.
主要成果:
- 具有序列相似性的家族114成员A1 (FAM114A1) 被确定为TNBC中免疫逃避和ICB抵抗的关键调解者.
- FAM114A1激活PI3K/AKT通路,并通过破坏p85α/p110α复合体并防止E2F4凝结物形成来促进MTDH转录.
- 这些由FAM114A1驱动的途径抑制瘤抗原的呈现,导致抗瘤免疫力下降.
- 向FAM114A1在临床前TNBC模型中提高了抗PD-1疗法的疗效.
- 一个基于FAM114A1的签名证明了TNBC患者ICB反应的强有力的预测价值.
结论:
- 在三阴性乳腺癌中,FAM114A1是免疫逃避和ICB抗性的重要驱动因素.
- FAM114A1是一个有前途的治疗标,也是TNBC中ICB治疗的有价值的预测生物标志物.
- 这些发现为TNBC免疫逃避提供了新的见解,并提出了改善ICB有效性的策略.
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