通过抑制SAT1的作用,MNT可以抑制肺腺癌铁和化学敏感性
Guangyin Zhao1, Jiaqi Liang1, Yuchen Zhang1
1Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
Communications biology
|June 3, 2024
概括
马克斯的下一个探戈 (MNT) 通过抑制铁化,促进肺腺癌的生长和化学疗法耐药性. MNT针对SAT1,抑制其表达并阻碍癌症治疗中至关重要的细胞死亡途径.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 铁,一种依赖于铁的细胞死亡,与瘤生长和化疗耐药性有关.
- 了解调节铁亡的分子机制对于开发有效的癌症疗法至关重要.
研究的目的:
- 调查MAX的Next Tango (MNT) 在铁亡中的作用及其对肺腺癌 (LUAD) 扩散和化疗敏感性的影响.
- 阐明通过MNT影响铁亡的分子途径.
主要方法:
- 用铁灭诱导剂治疗的LUAD细胞的RNA序列查.
- 在LUAD细胞中对MNT的过度表达和淘汰研究.
- 染色体免疫沉测序 (ChIP-Seq),qPCR,西斑和双光酶测试用于识别和验证MNT目标.
- 在体外和体内实验,以评估MNT的功能作用.
主要成果:
- 在用铁灭诱导剂治疗的LUAD细胞中,MNT表达显著上调.
- 过度表达MNT促进LUAD细胞的增殖,并通过抑制ferroptosis减少化疗敏感性.
- SAT1被确定为MNT的直接转录标,MNT抑制了SAT1促进剂的活性.
- 临床LUAD样本中MNT表达升高与患者的生存率差相关,与SAT1表达相反.
结论:
- 通过抑制铁亡,MNT在促进LUAD进展方面发挥着关键作用.
- MNT的机制涉及抑制SAT1,导致铁亡的减少和化学疗法的有效性受损.
- 在肺腺癌中,MNT是克服化疗耐药性的潜在治疗标.
相关概念视频
01:23Drugs Acting on Autonomic Ganglia: Stimulants
Ganglionic stimulants activate NM nicotinic receptors in autonomic ganglia, falling into two categories: nicotine mimetics [e.g., lobeline, dimethylpiperazine, tetramethylammonium] and muscarinic receptor agonists [e.g., muscarine, methacholine]. The first category's action is rapid and blocked by nicotinic receptor antagonists, while the second category's action is delayed and blocked by atropine-like agents. Nicotine, an alkaloid, affects the heart rate by stimulating sympathetic or...
01:24Antiasthma Drugs: Methylxanthines
Theophylline, a member of the methylxanthine class of bronchodilators, has long been used in asthma management. While its exact mechanism of action is not fully understood, it is believed to have multiple effects on various cellular processes.
Theophylline is thought to inhibit phosphodiesterase enzymes, increasing intracellular levels of cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). This rise in cAMP and cGMP concentrations stimulates cardiac function,...
Theophylline is thought to inhibit phosphodiesterase enzymes, increasing intracellular levels of cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). This rise in cAMP and cGMP concentrations stimulates cardiac function,...
01:20Antiasthma Drugs: Muscarinic Receptor Antagonists
Muscarinic receptor antagonists, also known as antimuscarinic agents, are a class of bronchodilators used to treat asthma, although they are more commonly used to treat COPD. They work by inhibiting the action of acetylcholine (ACh), a neurotransmitter, on muscarinic receptors found in the airways.
Antimuscarinic agents compete with ACh for the same binding site on the muscarinic receptors. By binding to these receptors, they inhibit the downstream effects of ACh and block the parasympathetic...
Antimuscarinic agents compete with ACh for the same binding site on the muscarinic receptors. By binding to these receptors, they inhibit the downstream effects of ACh and block the parasympathetic...
01:25Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs
Asthma is a chronic respiratory condition for which new therapeutic avenues, including anti-inflammatory drugs like mast cell stabilizers and anti-IgE treatments, continue to be developed.
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...
01:28Acid Suppressive Drugs for Peptic Ulcer Disease: Histamine H2-Receptor Antagonists
Histamine H2 receptors, which are intricately located on the basolateral membrane of parietal cells, play a crucial role in modulating gastric acid secretion. When released from enterochromaffin-like cells, histamine engages H2 receptors, initiating the cyclic AMP (cAMP) pathway. In this pathway, adenylyl cyclase converts ATP into cAMP, elevating intracellular cAMP levels. The activation of protein kinase A follows, stimulating the proton pump. This stimulation prompts the secretion of hydrogen...
01:28Chemotherapy-Induced Nausea and Vomiting: Neurokinin-1 Receptor Antagonists
Neurokinin 1 (NK1) receptors are distributed across the GI tract, vagal afferents, and key CNS regions including the central vomiting center and chemoreceptor trigger zone (CTZ) Chemotherapy agents stimulate enterochromaffin cells in the gastrointestinal (GI) tract to release large amounts of substance P (SP). SP is a neuropeptide released by specific sensory nerves in response to many different stressors, including those in the GI mucosa affected by chemotherapy. SP binds and activates these...