突变,炎症和肌肉增殖性瘤的表型
1Nantes Université, INSERM, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302, Nantes, France.
Frontiers in oncology
|June 7, 2023
概括
骨髓增殖性瘤 (MPNs),如真多细胞血症 (PV),基本血栓细胞血症 (ET) 和原发性骨髓纤维化 (PMF),具有共同的突变. 了解特定的致病机制是开发这些不可治愈疾病的治愈疗法的关键.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 骨髓增殖性瘤 (MPNs),包括真多细胞血症 (PV),基本血栓细胞血症 (ET) 和原发性骨髓纤维化 (PMF),以共享的JAK/STAT激活突变 (JAK2V617F,MPL,CALR) 为特征.
- 这些突变中缺乏疾病特异性,以及慢性炎症的存在,在理解不同的MPN表型方面带来了挑战.
- 同时发生的突变 (例如ASXL1,DNMT3A,TET2) 和它们在MPN病原和炎症中的作用正在进行广泛的研究.
研究的目的:
- 审查有关PV,ET和PMF背后的特定致病机制的当前知识.
- 探索共享突变和炎症如何导致不同的MPN表型.
- 确定开发MPN新型治疗疗法的潜在途径.
主要方法:
- 对MPN遗传学,分子机制和炎症的现有文献的审查.
- 对PV,ET和PMF提出的致病模型的分析.
- 检查治疗策略,包括在MPNs中测试的JAK抑制剂和其他药物.
主要成果:
- 在不同的MPN类型中发现了共享突变 (JAK2V617F,MPL,CALR),使表型确定复杂化.
- 炎症在MPN的发病过程中起着重要作用,与遗传突变相互作用.
- 目前的治疗方法,包括JAK抑制剂,已显示出有效性,但尚未导致治疗MPN.
结论:
- 对MPN特异性致病机制的更深入的理解对于推进治疗至关重要.
- 针对特定突变和炎症途径可能提供新的治疗策略.
- 开发用于MPN的治疗疗法仍然是一个迫切的目标.
相关概念视频
Differentiation of Common Myeloid Progenitor Cells
3.2K
Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
3.2K
Tumor Progression
6.4K
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...
6.4K
Disorders of Leukocytes
989
Leukocyte disorders can lead to either leukopenia, characterized by an abnormally low leukocyte count, or leukocytosis, marked by a very high leukocyte number.
Leukopenia may result from bone marrow disorders, autoimmune diseases, and infectious diseases. For example, conditions such as multiple myeloma and aplastic anemia can impair the bone marrow's ability to produce adequate leukocytes. Similarly, autoimmune diseases like lupus and viral infections such as HIV can prompt the immune...
Leukopenia may result from bone marrow disorders, autoimmune diseases, and infectious diseases. For example, conditions such as multiple myeloma and aplastic anemia can impair the bone marrow's ability to produce adequate leukocytes. Similarly, autoimmune diseases like lupus and viral infections such as HIV can prompt the immune...
989
Lineage Commitment
3.0K
Commitment is the process whereby stem cells:
3.0K
Abnormal Proliferation
4.6K
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...
4.6K
Regulation of Hematopoietic Stem Cells
3.2K
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
3.2K


