N-乙基-N-酸盐 (ENU) 改变了骨髓中的细胞因子表达,改变了骨髓的微环境,从而发展出白血病
Priyatosh Nath1,2, Chaitali Sarkar1, Prosun Tribedi3
1Immunology Microbiology Laboratory, Department of Human Physiology, Tripura University, Suryamaninagar, Agartala, 799022, Tripura, India.
Medical oncology (Northwood, London, England)
|July 11, 2025
概括
骨髓细胞因子和氧化应激的慢性变化与白血病的发展有关. 这项研究在小鼠中随着时间的推移跟踪了这些动态,揭示了血液细胞干细胞中关键的分子变化,这些变化可能会驱动白血病发生.
科学领域:
- 血液学 血液学 血液学
- 癌症生物学 癌症生物学
- 分子生物学分子生物学
背景情况:
- 骨髓 (BM) 微环境中的细胞因子对于血液形成至关重要.
- 改变的BM细胞因子信号与白血病等血液恶性瘤有关.
- 了解BM微环境的动态是确定新的治疗点的关键.
研究的目的:
- 为了研究一种假设,即BM细胞因子表达的慢性变化驱动白血病的发展.
- 阐明细胞因子,氧化应激和BM微环境中的关键蛋白质随着时间的推移的动态相互作用.
- 识别可能导致白血病发生的血造干细胞 (HSC) 中的分子变化.
主要方法:
- 长度动物研究涉及致癌物 (N-乙烯-N-酸盐) 的管理.
- 在10个时间点收集的BM样本 (暴露后2-20周) 用于比较分析.
- 对细胞因子表达,氧化应激标志物和参与DNA合成和细胞循环调节的蛋白质 (例如PCNA,NF-κB) 的分析.
主要成果:
- 与对照组相比,在注射ENU的小鼠中观察到细胞因子表达,氧化应激和关键调节蛋白的显著变化.
- 这些因素的动态变化随着暴露时间的变化而变化,表明BM微环境的调节.
- 有证据表明,这些微环境变化会影响HSC,可能引发白血病.
结论:
- 放松调节的细胞因子表达和相关的BM微环境变化在白血病诱导中发挥着关键作用.
- 该研究强调了这些变化的动态性质及其对HSC的潜在影响.
- 这些发现为未来研究细胞因子驱动的白血病发生和治疗策略提供了基础.
相关概念视频
Nucleotide Excision Repair
37.5K
Overview
37.5K
Spontaneous and Induced Mutations
158
Spontaneous mutations arise infrequently during DNA replication due to errors in the process. A key factor behind these errors is tautomeric shifts in nitrogenous bases, where bases transition from keto to enol forms or amino to imino forms. This shift can alter base-pairing rules, leading to mutations. Additionally, reactive oxygen species (ROS) arising from aerobic metabolism can damage DNA, resulting in depurination (loss of a purine base) or depyrimidination (loss of a pyrimidine base).
158
Mutagenicity and Carcinogenicity
1.4K
Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
1.4K
Bone Marrow Sampling and Transplants
502
Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...
502
The Tumor Microenvironment
6.8K
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...
6.8K
Nucleosome Remodeling
9.5K
Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
9.5K


