天生的免疫监测和表观遗传标记的识别
1Department of Epigenetics & Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
Epigenomes
|September 22, 2025
概括
表观遗传修饰,如DNA甲基化变化,可以向天生的免疫系统发出危险信号,模仿病原体信号. 通过模式识别受体对表观遗传标记的这种识别为癌症免疫治疗提供了新的途径.
科学领域:
- 免疫学 免疫学 免疫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症生物学 癌症生物学
背景情况:
- 天生的免疫系统使用模式识别受体 (PRR) 识别病原体和细胞损伤.
- 表观遗传改变,包括DNA甲基化和基因组修饰,越来越多地被认为是潜在的免疫触发因素.
- 异常的表观遗传标记可以被PRR感知,激活免疫监测.
研究的目的:
- 探索表观遗传标记可以作为损伤相关分子模式 (DAMPs) 或模仿病原体相关分子模式 (PAMPs) 的概念.
- 审查先天免疫系统如何识别表观遗传修饰.
- 讨论对癌症和自身免疫的影响.
主要方法:
- 文献综述整合了免疫学,表观遗传学和癌症生物学方面的发现.
- 讨论PRRs识别的特定表观遗传元素,如非甲基化CpGDNA,低甲基化自我DNA和细胞外基因组.
- 在癌症中因表观遗传失调引起的"病毒模拟"的检查.
主要成果:
- 非甲基化CpG基因被托尔类受体9 (TLR9) 识别.
- 细胞质DNA传感器,如cGAS,可以检测错位或低甲基化自我DNA.
- 细胞外基因组和核酶体作为DAMP,激活TLR和炎症酶体.
- 癌症中的表观遗传失调可以导致"病毒模仿",引发I型干扰素反应.
结论:
- 表观基因组正在成为天生的免疫识别的目标.
- 免疫系统对表观遗传变化的识别具有癌症免疫治疗的潜力.
- 了解这些途径对于预防自身免疫性至关重要.
相关概念视频
Immune Surveillance by NK Cells and Phagocytes
7.9K
Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
7.9K
Introduction to Innate and Adaptive Immunity
8.9K
The human immune system is a complex defense mechanism that protects the body from harmful pathogens and foreign substances. It comprises two crucial components: innate and adaptive immunity.
Innate immunity is the body's natural, nonspecific defense system that acts quickly to protect against pathogens. It incorporates physical barriers like skin and mucous membranes and cellular elements such as phagocytes and natural killer cells. This part of our immune system provides an immediate,...
Innate immunity is the body's natural, nonspecific defense system that acts quickly to protect against pathogens. It incorporates physical barriers like skin and mucous membranes and cellular elements such as phagocytes and natural killer cells. This part of our immune system provides an immediate,...
8.9K
Epigenetic Regulation
3.7K
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
3.7K
Epigenetic Regulation
33.5K
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
33.5K
Cells of the Innate Immune Response
8.7K
The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
8.7K
What is the Immune System?
126.8K
Overview
126.8K


