PAX3-FOXO1驱动了可向细胞状态依赖的代谢脆弱性在拉布多米索尔科马
bioRxiv : the preprint server for biology
|January 27, 2025
概括
PAX3-FOXO1通过改变皮里米丁代谢来驱动侵略性狂宫肌肉瘤. 使用甲基酸盐抑制二叶酸减少酶 (DHFR) 有效地向这些癌细胞,为儿科瘤提供了一种新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症新陈代谢 癌症新陈代谢
背景情况:
- PAX3-FOXO1是激进性狂宫肌肉瘤 (RMS) 的一个关键驱动因素.
- 恶性细胞状态通常由特定的基因表达程序支持.
- 改变细胞代谢可以促进癌症的进展.
研究的目的:
- 为了研究PAX3-FOXO1驱动的RMS的代谢依赖性.
- 探索在RMS中准皮里米丁合成的治疗潜力.
- 为了确定DHFR抑制是否影响PAX3-FOXO1-阳性RMS生长.
主要方法:
- 在PAX3-FOXO1-阳性RMS细胞中对pyrimidine代谢的分析.
- 评估使用甲基酸盐对二叶酸减少酶 (DHFR) 抑制的敏感性.
- 对瘤异种移植模型上甲状腺素的作用的评估.
- 对PAX3-FOXO1阳性和融合阴性RMS反应的比较.
主要成果:
- 具有PAX3-FOXO1阳性的RMS细胞显示皮里米丁代谢发生变化,并依赖于新的皮里米丁合成.
- 这些细胞对甲状腺酸盐抑制的DHFR敏感,这种敏感性被胺核酸所挽救.
- 甲索治疗模仿PAX3-FOXO1对基因表达的沉默效应.
- 甲托雷克萨特减缓了PAX3-FOXO1阳性异种移植的瘤生长,但不是融合阴性对应物.
结论:
- 在RMS中,PAX3-FOXO1诱导了一种代谢状态,其特点是改变了pyrimidine的依赖性.
- 甲索特酸是PAX3-FOXO1驱动性狂宫肌肉瘤的一个有前途的治疗药物.
- 向DHFR代表了对这些侵袭性儿科瘤治疗的潜在补充.
更多相关视频
09:21Tumorsphere Derivation and Treatment from Primary Tumor Cells Isolated from Mouse Rhabdomyosarcomas
Published on: September 13, 2019
7.1K
09:37Defining Gene Functions in Tumorigenesis by Ex vivo Ablation of Floxed Alleles in Malignant Peripheral Nerve Sheath Tumor Cells
Published on: August 25, 2021
1.7K
相关概念视频
mTOR Signaling and Cancer Progression
3.7K
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...
3.7K
Abnormal Proliferation
4.4K
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...
4.4K
PI3K/mTOR/AKT Signaling Pathway
3.4K
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...
3.4K
