通过模仿瘤微环境来识别自然杀手细胞增强剂
Aylin Binici1,2, Elisabeth Hennes1, Sandra Koska1
1Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Str. 11, 44227, Dortmund, Germany.
Chemistry (Weinheim an der Bergstrasse, Germany)
|February 11, 2025
概括
研究人员选了小分子来克服瘤微环境 (TME) 免疫抑制并增强自然杀手 (NK) 细胞活性. 作为TGFβR-1抑制剂的RepSox通过抑制TGFβR-1和循环氧化酶1 (COX1) 两者,有效地恢复了NK细胞的细胞毒性.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 瘤微环境 (TME) 含有免疫抑制因素,如金氨酸,前列腺素E2和转化生长因子β (TGFβ).
- 这些因素抑制细胞毒性淋巴细胞,如自然杀手 (NK) 细胞,使癌细胞能够逃避免疫监测.
- 恢复NK细胞活动是癌症免疫疗法的有希望的策略.
研究的目的:
- 为了确定能够抵消TME诱导免疫抑制的小分子.
- 发现可以恢复NK细胞介导的细胞毒性的化合物.
- 研究这些小分子发挥作用的机制.
主要方法:
- 开发一种表型共同培养试验,用于癌细胞和原发性淋巴细胞的中等通量查.
- 对小分子进行查,以识别恢复NK细胞细胞毒性的小分子.
- 对有前途的化合物的作用机制的描述,包括对TGFβ型I受体 (TGFβR-1) 和循环氧化酶1 (COX1) 抑制的评估.
主要成果:
- 识别各种小分子,通过各种机制恢复NK细胞介导的细胞毒性.
- 作为一种强大的TGFβR-1抑制剂,RepSox与其他TGFβR-1抑制剂相比,表现出更高的疗效.
- 雷普索克的增强活性归因于其对TGFβR-1和循环氧化酶1 (COX1) 的双重抑制,消除了多种免疫抑制因素的影响.
结论:
- 可以确定小分子来克服TME介导的免疫抑制并增强抗瘤免疫力.
- 由于其对TGFβR-1和COX1.1的双重抑制作用,RepSox代表了一个有前途的治疗候选者.
- 在TME中准多个免疫抑制途径可能是恢复NK细胞功能在癌症治疗中更有效的策略.
相关概念视频
The Tumor Microenvironment
6.5K
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
6.5K
Cells of the Innate Immune Response
1.4K
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...
1.4K
Cytotoxic T Cells-mediated Immune Response
832
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
832
Immune Surveillance by NK Cells and Phagocytes
1.3K
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...
1.3K
Tumor Immunotherapy
464
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.
464


