相关实验视频
Updated: Jan 28, 2026

03:36
Development of Compendium for Esophageal Squamous Cell Carcinoma
Published on: April 12, 2024
782
过度表达GPER1抑制了食道癌的生长,通过激活cAMP通路
Hongmei Yin1, Xiumei Han2, Qun Zhang2
1Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei; Department of Radiotherapy, The First Affiliated Hospital of Bengbu Medical University, Bengbu.
European journal of histochemistry : EJH
|January 26, 2026
概括
在食道癌 (EC) 中,G蛋白结合雌激素受体1 (GPER1) 降低. 过度表达GPER1会增强铁,通过cAMP途径抑制EC瘤的生长.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- G蛋白结合雌激素受体1 (GPER1) 是已知的瘤调节剂,但其在食道癌 (EC) 中的功能尚不清楚.
- 雌激素信号通路在癌症的发展和进展中起着至关重要的作用.
研究的目的:
- 研究食道癌中GPER1的表达和预后意义.
- 阐明GPER1在调节EC细胞增殖,细胞亡和铁亡中的作用.
- 确定潜在的分子机制,特别是cAMP途径的参与.
主要方法:
- 使用TCGA数据库,细胞系和患者组织,分析EC中的GPER1表达.
- 在体外测试包括CCK-8,流细胞计 (亡,ROS,Fe2+),ELISA和西式涂抹.
- 在体内研究涉及瘤异种移植,测量瘤生长,Ki-67和H&E染色.
主要成果:
- 在EC组织中,GPER1的表达显著降低,并与患者的存活率降低有关.
- 过度表达GPER1抑制了EC细胞增殖,诱导了亡,增加了ROS和Fe2+水平,并调节了铁亡标记物 (增加了ACSL4,减少了GPX4).
- 在体内,GPER1的过度表达限制了瘤的生长,并减少了扩散标志物.
结论:
- 在食道癌中,GPER1被降低调控,并作为潜在的预后生物标志物.
- 过度表达GPER1促进EC细胞中的铁,导致瘤生长减少.
- 通过激活cAMP信号通路来调解GPER1的铁性作用.
相关概念视频
cAMP-dependent Protein Kinase Pathways
8.4K
Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
8.4K
Esophageal Varices-I: Introduction
1.4K
Esophageal varices are dilated, tortuous veins which are found mainly in the submucosa of the lower esophagus but which may also appear higher up or extend into the stomach. They develop due to increased pressure in the portal venous system, often as a result of liver cirrhosis. This condition scars and damages the liver, impeding normal blood flow through the portal vein. To compensate, blood seeks alternative pathways, forming fragile new vessels (varices) in the esophagus and stomach. These...
1.4K
C4 Pathway and CAM
49.1K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
49.1K
Esophageal Perforation-I: Introduction
589
Esophageal perforation is a severe medical condition characterized by a breach in the integrity of the esophageal wall. This breach can occur due to various factors such as trauma, medical procedures, or underlying diseases. When the esophageal wall is compromised, it allows food, fluids, and digestive juices into the chest cavity or adjacent structures, leading to potential complications and health risks.
The location of esophageal perforation can vary, occurring anywhere along the esophagus....
The location of esophageal perforation can vary, occurring anywhere along the esophagus....
589
Esophageal Strictures-I: Introduction
845
Esophageal strictures involve abnormal narrowing or tightening of the esophagus. They vary in length and severity, ranging from mild constriction to complete obstruction, and are classified as benign (noncancerous) or malignant (cancerous).
Etiology
The primary cause of esophageal strictures is long-standing gastroesophageal reflux disease (GERD), accounting for about 70 to 80% of adult cases. Chronic acid reflux can lead to injury and scarring of the esophageal lining, culminating in...
Etiology
The primary cause of esophageal strictures is long-standing gastroesophageal reflux disease (GERD), accounting for about 70 to 80% of adult cases. Chronic acid reflux can lead to injury and scarring of the esophageal lining, culminating in...
845
Esophageal Strictures-II: Clinical Features and Management
600
Patients with esophageal strictures often experience a range of symptoms. Initially, they may have difficulty swallowing solid foods, which can progress to include liquids. Additional symptoms may involve chest pain or discomfort, regurgitating food and fluids, heartburn, unintentional weight loss, coughing or choking during meals, and hoarseness.
Healthcare providers should gather a comprehensive medical history and conduct a physical examination for diagnosis. If esophageal stricture is...
Healthcare providers should gather a comprehensive medical history and conduct a physical examination for diagnosis. If esophageal stricture is...
600

