液体活检用于早期发现胰腺癌:为什么它还没有起作用?
Kenji Takahashi1,2, Yusuke Ono1,2,3, Kenzui Taniue1,4
1Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, Asahikawa 078-8510, Hokkaido, Japan.
Cancers
|February 13, 2026
概括
液体活检在早期发现胰腺管腺癌 (PDA) 方面取得了有限的成功,这是由于生物挑战,如低瘤负担和背景噪音. 需要进一步的研究来克服这些临床应用的障碍.
科学领域:
- 在瘤学瘤学.
- 生物标志物 生物标志物
- 诊断技术 诊断技术 诊断技术
背景情况:
- 液体活检,分析循环瘤DNA (ctDNA) 和其他标记物,正在探索早期胰腺管道腺癌 (PDA) 检测.
- 目前使用外周血液的方法对早期PDA和前体病变的敏感性和特异性有局限性.
研究的目的:
- 批判性地审查阻碍液体活检用于早期PDA检测的临床实用性的障碍.
- 确定阻碍可靠早期诊断的生物,技术和临床挑战.
主要方法:
- 对PDA液体活检方法的现有文献的审查.
- 分析循环中的瘤衍生成分 (cfDNA,cfRNA,EVs,CTCs) 和与胰腺相关的液体.
- 检查生物因素 (瘤负担,脱落) 和技术问题 (标准化,可重复性).
主要成果:
- 早期的PDA和前体病变具有最小的瘤负担和较低的分析物流失,造成了显著的检测挑战.
- 多层液体活检方法和胰腺相关液体分析并没有持续改善诊断性能.
- 人们对过度诊断存在担忧,因为分子变化反映了克隆扩张而没有不可避免的恶性瘤.
结论:
- 液体活检目前是一种补充工具,而不是在早期PDA检测中取代组织病理学.
- 为了有意义的临床应用,必须解决生物学和技术障碍,以及分析前的变异性.
- 液体活检在早期PDA检测中的确切作用仍未确定,需要进一步的研究来克服现有的障碍.
相关概念视频
01:26Pancreatic Juice and Secretion
3.1K
Pancreatic juice is a clear fluid produced by the pancreas, containing water, salts, sodium bicarbonate, and enzymes vital for digestion in the small intestine. It helps break down large molecules, facilitating nutrient absorption.
When acidic chyme from the stomach enters the duodenum, it triggers the release of secretin, a hormone that prompts pancreatic juice secretion. After a fatty meal, cholecystokinin, another hormone, stimulates gallbladder contraction and enhances enzyme-rich...
When acidic chyme from the stomach enters the duodenum, it triggers the release of secretin, a hormone that prompts pancreatic juice secretion. After a fatty meal, cholecystokinin, another hormone, stimulates gallbladder contraction and enhances enzyme-rich...
3.1K
01:27Acute Pancreatitis I: Introduction
1.3K
Pancreatitis is inflammation of the pancreas, an organ located behind the stomach. It can be either acute or chronic.
Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
The causes of acute pancreatitis include:
Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
The causes of acute pancreatitis include:
1.3K
01:24Chronic Pancreatitis I: Introduction
750
The pancreas, an elongated and flat gland situated behind the stomach, serves a vital function in digesting food and managing blood sugar levels.
Pancreatitis is the inflammation of the pancreas, which occurs when the immune system becomes active and causes swelling, pain, and disruptions in organ function. Pancreatitis can manifest as either an acute or chronic condition.
Acute pancreatitis arises suddenly and lasts for a brief duration, while chronic pancreatitis is a long-term affliction...
Pancreatitis is the inflammation of the pancreas, which occurs when the immune system becomes active and causes swelling, pain, and disruptions in organ function. Pancreatitis can manifest as either an acute or chronic condition.
Acute pancreatitis arises suddenly and lasts for a brief duration, while chronic pancreatitis is a long-term affliction...
750
02:26Molecular Comparison of Gases, Liquids, and Solids
55.7K
Particles in a solid are tightly packed together (fixed shape) and often arranged in a regular pattern; in a liquid, they are close together with no regular arrangement (no fixed shape); in a gas, they are far apart with no regular arrangement (no fixed shape). Particles in a solid vibrate about fixed positions (cannot flow) and do not generally move in relation to one another; in a liquid, they move past each other (can flow) but remain in essentially constant contact; in a gas, they move...
55.7K
01:29Chronic Pancreatitis II: Collaborative Care
383
The management of chronic pancreatitis is multifaceted, involving a comprehensive approach that includes thorough assessment, diagnostic testing, and a variety of management strategies.
Assessment:
Assessment:
383
01:18Rise of Liquid in a Capillary Tube
3.3K
When very thin cylindrical tubes, called capillaries, are dipped in a liquid, the liquid rises or falls in the tube compared to the surrounding liquid. This phenomenon is called capillary action. Capillary action occurs due to the combination of two opposing forces: the cohesive forces of the liquid, which cause it to stick to itself and form a rounded shape, and the adhesive forces between the liquid and the walls of the container, which cause the liquid to be attracted to the container walls.
3.3K