通过激活mTORC1信号通路,FARSB促进了肝细胞癌的进展
Yaofeng Wang1, Gengqiao Wang1, Shaobo Hu1
1Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
International journal of molecular sciences
|December 9, 2023
概括
人类氨酸tRNA合成酶 (PheRS) 的组成部分FARSB通过激活mTORC1信号和抑制铁亡,促进肝细胞癌 (HCC) 的进展. 高FARSB表达与低HCC患者存活率相关,表明其作为生物标志物的潜力.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 肝细胞癌 (HCC) 是一种普遍存在的恶性瘤,死亡率高.
- 人类氨酸tRNA合成酶 (PheRS) 涉及FARSA和FARSB基因;FARSB是一个疑似瘤基因,在HCC中缺乏实验验证.
- FARSB在HCC进展中的作用及其潜在机制在很大程度上仍未被探索.
研究的目的:
- 研究FARSB在肝细胞癌 (HCC) 进展中的作用.
- 阐明FARSB影响HCC的分子机制.
- 评估FARSB作为HCC预后和治疗的潜在生物标志物.
主要方法:
- 对肝癌组织中FARSB表达的分析以及与患者存活率和预后的相关性.
- 在体外对FARSB对肝癌细胞增殖和迁移的影响的评估.
- 研究FARSB与mTORC1通路的相互作用,特别是绑定Raptor.
- 通过mTOR信号调节检查FARSB对埃拉斯诱导的铁亡的作用.
主要成果:
- 肝癌组织中的高FARSB表达与患者存活率降低和预后不佳显著相关.
- 肝癌细胞中FARSB mRNA和蛋白质水平的增加增强了细胞的增殖和迁移.
- 通过与Raptor相互作用,FARSB激活了mTOR复合体1 (mTORC1) 信号通路.
- FARSB抑制了埃拉斯诱导的铁亡,可能通过mTOR通路调节,有助于HCC的进展.
结论:
- FARSB显著促进HCC的进展,并与患者不良结果有关.
- FARSB的致癌功能包括mTORC1信号的激活和铁亡的抑制.
- FARSB具有作为早期HCC查和治疗策略的有价值生物标志物的潜力.
更多相关视频
相关概念视频
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
PI3K/mTOR/AKT Signaling Pathway
3.6K
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...
3.6K
MAPK Signaling Cascades
5.6K
Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
5.6K
Abnormal Proliferation
4.5K
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...
4.5K
Interactions Between Signaling Pathways
6.3K
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
6.3K
Mitogens and the Cell Cycle
6.5K
Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
6.5K


