缺少ARID1A调节了食道腺癌中的抗瘤免疫反应
Le Zhang1, Yueyuan Zheng1, Wenwen Chien1
1Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA.
Cancers
|November 25, 2023
概括
在食道腺癌 (EAC) 中,ARID1A的丧失会增强抗瘤CD8+T细胞的反应. 这种缺陷影响免疫信号和脂肪酸代谢,这表明EAC免疫检查点封锁的新治疗策略.
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:
- ARID1A是SWI/SNF染色体重塑复合物的组成部分,在各种癌症中经常发生变化.
- 食道腺癌 (EAC) 是癌症相关死亡的重要原因.
- 了解ARID1A在EAC免疫微环境中的作用,对于开发有效的治疗方法至关重要.
研究的目的:
- 研究ARID1A缺乏对食道腺癌中抗瘤免疫反应的影响.
- 探索ARID1A状态,免疫细胞透和EAC中的代谢途径之间的关系.
- 根据ARID1A在免疫和新陈代谢中的作用来确定EAC的潜在治疗点.
主要方法:
- 在EAC患者队列中分析ARID1A突变状态.
- 评估瘤透的CD8+T细胞水平.
- 对干扰素 (IFN) 响应信号通路的评估.
- 研究ARID1A对脂肪酸代谢基因的调节.
- 关于CD8+T细胞招募和细胞分解活性的功能研究.
主要成果:
- 在ARID1A突变的EAC瘤中,CD8+ T细胞的透率增加.
- 缺少ARID1A增强了EAC细胞中的IFN响应信号.
- 缺乏ARID1A的EAC细胞促进CD8+T细胞的招募和细胞毒性功能.
- 在EAC中,ARID1A调节参与脂肪酸代谢的基因.
- 在EAC中脂肪酸代谢影响CD8+T细胞的招募和活动.
结论:
- ARID1A 缺陷通过调节 IFN 信号传递和 T 细胞活性,显著影响 EAC 中的抗瘤免疫反应.
- ARID1A对脂肪酸代谢的调节与EAC中的免疫细胞动态交织在一起.
- 准ARID1A相关途径可能为增强EAC中的免疫检查点阻塞疗法提供新的策略.
相关概念视频
Abnormal Proliferation
4.5K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.5K
Role Of Notch Signalling In Intestinal Stem Cell Renewal
2.1K
Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
2.1K
mTOR Signaling and Cancer Progression
3.8K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
3.8K
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
2.2K
Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.
2.2K
Regulation of Angiogenesis and Blood Supply
2.6K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.6K
Tumor Immunotherapy
529
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
529


