氧和成像揭示了胃癌中的瘤异质性
Tatsunori Minamide1,2, Nobuhisa Minakata1, Riu Yamashita3
1Department of Gastroenterology and Endoscopy National Cancer Center Hospital East Chiba Japan.
DEN open
|February 24, 2025
概括
氧和成像揭示了胃癌中独特的生物特征. 这项技术可以通过识别低氧和高氧区域来澄清瘤异质性,有助于理解癌症生物学.
科学领域:
- 生物医学成像学 生物医学成像学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 氧和成像是一种新兴的技术,用于评估基于氧度的生物特征.
- 瘤异质性显著影响胃癌的进展和治疗反应.
- 了解瘤中氧气水平的空间分布对于描述瘤生物学至关重要.
研究的目的:
- 评估氧和成像在胃癌的生物影响.
- 通过使用实时氧和成像来评估未经治疗的胃癌中的瘤异质性.
- 为了将组织氧化水平与胃瘤的分子和细胞特征相关联.
主要方法:
- 实时氧和成像用于胃癌患者的选择性活检部位选择.
- 组织氧和水平计算了低氧,高氧和非瘤区域.
- 免疫组织化学和RNA测序在活检样本上进行,以分析蛋白质和基因表达.
主要成果:
- 在低氧 (32.2%),高氧 (70.8%) 和非瘤 (56.2%) 区域之间观察到平均组织氧和水平的显著差异.
- 低毒性胃瘤显示CD-31和葡萄糖载体1蛋白的表达显著上调.
- 转录组分析在低氧瘤 (胰岛素类生长因子输送) 和高氧瘤 (I型干扰素信号传递) 中发现了丰富的途径.
结论:
- 氧和成像为胃癌中缺氧诱导的异质性提供了宝贵的见解.
- 这项技术有可能提高对胃癌生物学的临床和基本理解.
- 这些发现突出了与低氧和高氧瘤微环境相关的独特分子概况.
相关概念视频
01:29Positron Emission Tomography
Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
01:30Radiological Investigation II: MRI and Ventilation Perfusion Scan
Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
01:13Radiological Investigation III: Pulmonary Angiogram and PET Scan
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...