NOTCH3 驱动脂肪酸氧化和铁死抵抗在侵略性脑膜瘤
Research square
|June 12, 2025
概括
NOTCH3信号驱动积极的脑膜瘤向脂肪酸氧化,耗尽脂质并赋予对铁亡的抵抗力. 这种代谢转变凸显了NOTCH3阳性瘤的潜在脆弱性.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 代谢研究研究 代谢研究
背景情况:
- NOTCH3信号传递与各种癌症有关,包括脑膜瘤.
- 之前的研究将NOTCH3表达与更高度脑膜瘤和治疗耐药性联系起来.
- 与脑膜瘤中NOTCH3激活相关的代谢表型基本上是未知的.
研究的目的:
- 为了研究NOTCH3激活在脑膜瘤中的代谢后果.
- 探索NOTCH3在调节脑膜瘤细胞中的脂质代谢和铁化中的作用.
主要方法:
- 对NOTCH3阳性脑膜瘤细胞系的单细胞RNA测序.
- 在脑膜瘤细胞模型中NOTCH3细胞内域 (ICD) 的过度表达.
- 非向的代谢学,脂质学和大量RNA测序分析.
- 功能代谢和线粒体检测,包括铁灭耐药性研究.
主要成果:
- NOTCH3的激活促进了对脂肪酸氧化 (FAO) 的代谢转变.
- 这种转变会耗尽脂质的可用性,并增强对铁亡的抵抗力.
- NOTCH3高的脑膜瘤细胞显示CD36表达和线粒体呼吸的增加.
- NOTCH3的过度表达赋予了对铁亡的抵抗力,这种抵抗力可以通过抑制CPT1来逆转.
结论:
- NOTCH3信号与脂质代谢重编程和侵袭性脑膜瘤中的铁亡脱离有关.
- 这种代谢重编程可能会导致NOTCH3阳性脑膜瘤的恶性行为.
- 针对这些代谢脆弱性,为侵袭性脑膜瘤提供了潜在的治疗策略.
相关概念视频
Notch Signaling Pathway
4.2K
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
4.2K
Role Of Notch Signalling In Intestinal Stem Cell Renewal
2.1K
Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
2.1K
Necrosis
4.4K
Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
4.4K
mTOR Signaling and Cancer Progression
3.8K
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...
3.8K
Tail-anchoring of Proteins in the ER Membrane
3.1K
Tail-anchored, or TA, proteins are estimated to make up to 3-5% of membrane proteins found in the eukaryotic cell. Such proteins have a single transmembrane domain located approximately 30 amino acid residues upstream from the C-terminal end. As a result, the signal recognition particle (SRP) cannot guide a TA protein to the ER membrane for cotranslational insertion. Hence, they are integrated into the ER membrane post-translationally using their C-terminal end as the anchor. TA proteins...
3.1K
The Nucleolus
8.7K
The nucleolus is the most prominent substructure of the nucleus. When it was first discovered, it was considered to be an isolated organelle that forms fibrils and granules. In 1931, the relationship between the nucleolus and chromosomes was first described by Heitz. He observed that the appearance and size of nucleolus varies depending on the stage of the cell cycle. He also noticed constricted regions on different chromosomes clustered together at definite cell cycle stages. These regions,...
8.7K


