在瘤发生过程中,肠上皮细胞的食会触发适应性免疫
These videos have been matched automatically. Contact us if they are not relevant.
These videos have been matched automatically. Contact us if they are not relevant.
在PubMed上查看摘要
概括
此摘要是机器生成的。有更多细胞毒性CD8+T细胞的结肠直肠癌瘤的结果更好. 肠上皮细胞使用线粒细胞和溶酶体损伤来促进T细胞对瘤的反应.
科学领域
- 癌症学
- 免疫学
- 细胞生物学
背景情况
- 结直肠癌瘤中细胞毒性CD8+T细胞的高密度与患者预后的改善有关.
- 了解增强抗瘤免疫力的机制对于开发有效的癌症治疗至关重要.
研究的目的
- 研究肠上皮细胞 (IEC) 中的细胞内机制,这些细胞调节了结直肠癌中CD8+ T细胞介导的适应性免疫反应.
- 探索Stat3信号在控制肠道瘤发生过程中的T细胞介导免疫力中的作用.
主要方法
- 在wnt/β-catenin依赖的肠道瘤发生的本土模型中利用了Stat3功能丧失.
- 分析了线粒细胞和溶酶体完整性对IEC中MHC类I表现的影响.
- 研究了涉及树突细胞 CD8+ T 细胞激活的交叉穿戴机制.
主要成果
- 在IEC中增高的线粒会导致铁在溶解体中积累,导致溶解体膜透 (LMP).
- 在细胞质中释放蛋白质,增强MHC I类表现.
- 这一过程通过树突细胞交叉服促进CD8+T细胞的激活,从而促进抗瘤免疫力.
结论
- 在IEC中确定了线粒体功能 (线粒体),溶酶体完整性和MHC I类呈现之间的新联系.
- 在IEC中诱导线粒细胞或LMP的疗法可能会增强结直肠癌的抗瘤免疫力.
相关概念视频
The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
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,...
The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and...
Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
Overview
The immune system comprises diverse biological structures and processes that protect the body from disease. These processes can be classified into innate and adaptive immunity. To work effectively, the immune system needs to detect pathogens by distinguishing the body’s own structures from foreign elements. If this determination fails, autoimmune diseases occur in which the immune system reacts against the body’s own tissue.
The Innate Immune System Acts Fast and...