表观遗传和转录程序定义了骨髓瘤亚型,并确定了可针对的漏洞
Eunice Lopez-Fuentes1, Andrew S Clugston2, Alex G Lee1
1University of California, San Francisco, San Francisco, CA, United States.
Cancer discovery
|October 2, 2025
概括
表观遗传机制驱动着不同的骨质肉瘤亚型,被确定为早期骨质细胞衍生 (EOD) 和晚期骨质细胞衍生 (LOD) 状态. 这些亚型表现出差异性的药物反应,为向骨髓瘤治疗铺平了道路.
科学领域:
- 在瘤学瘤学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因组学就是基因组学.
背景情况:
- 骨髓瘤是一种复杂的癌症,由于基因组异质性,其向治疗方法有限.
- 人们越来越认识到表观遗传失调是癌症复杂性和异质性的驱动因素.
研究的目的:
- 研究表观遗传机制在驱动不同类型的骨髓瘤亚型中的作用.
- 根据表观遗传特征,识别和描述骨髓瘤中的细胞状态.
- 探索这些已识别的亚型的治疗影响.
主要方法:
- 染色体可访问性分析,以识别不同的细胞状态.
- 多原子单细胞分析以定义核心调节电路.
- 使用患者衍生的异种移植模型来评估差异性的药物反应.
主要成果:
- 鉴定了两个骨髓瘤细胞状态:早期骨质母细胞衍生 (EOD) 和晚期骨质母细胞衍生 (LOD).
- EOD和LOD状态的特征是与骨发育相关的明显的转录因子配置文件.
- 这些细胞状态在瘤中并存,并在临床前模型中对治疗产生不同的反应.
结论:
- 表观遗传异质性定义了具有治疗意义的明显的骨髓瘤亚型.
- 了解这些表观遗传亚型对于开发有效的骨髓瘤组合疗法至关重要.
- 这项工作突显了表观遗传亚型在复杂癌症中的潜力.
相关概念视频
Epigenetic Regulation
3.7K
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
3.7K
Adaptive Mechanisms in Cancer Cells
7.0K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
7.0K
mTOR Signaling and Cancer Progression
4.6K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
4.6K


