与瘤相关的巨细胞:瘤微环境的编排者
John B Echols1, Arthur W Meehan1, Kathleen A Marotto1
1Division of Molecular and Cellular Pathology, Department of Pathology and O'Neal Comprehensive Cancer Center, Heersink School of Medicine, The University of Alabama at Birmingham (UAB), Birmingham, AL.
American journal of physiology. Cell physiology
|February 3, 2026
概括
巨细胞,关键的免疫细胞,最初与瘤作斗争,但可以切换到促进癌症. 然后,与瘤相关的巨细胞 (TAMs) 在瘤微环境 (TME) 中驱动癌症的进展.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
背景情况:
- 巨细胞是重要的先天性免疫细胞,主导炎症,组织修复和伤口愈合.
- 癌症被视为一种慢性炎症状况,类似于无法愈合的伤口.
- 巨细胞最初通过消除包括瘤细胞在内的外来实体来表现出抗瘤特性.
研究的目的:
- 审查巨细胞在癌症中的多方面的作用.
- 阐明巨细胞转化为瘤相关巨细胞 (TAMs).
- 突出TAMs作为瘤微环境 (TME) 编排者的功能.
主要方法:
- 对炎症和癌症中的巨细胞生物学现有文献的综述.
- 细胞和分子机制驱动巨细胞两极化的分析.
- 检查TAMs对瘤进展的贡献.
主要成果:
- 巨细胞最初具有抗瘤能力,但在瘤内被重新编程.
- 瘤细胞和微环境因素诱导复极化成为前瘤TAMs.
- TAMs积极促进癌症的进展,并协调TME.
结论:
- 瘤抑制剂是癌症的核心参与者,从瘤抑制剂转变为促进剂.
- 了解TAM重编程对于开发新型癌症疗法至关重要.
- 瘤瘤显著影响瘤微环境,推动瘤的进展.
相关概念视频
The Tumor Microenvironment
7.8K
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...
7.8K
Tumor Immunotherapy
1.9K
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.
1.9K
Tumor Progression
7.4K
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
7.4K
Cancer Stem Cells and Tumor Maintenance
6.0K
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
6.0K
Loss of Tumor Suppressor Gene Functions
6.1K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
6.1K


