基于氧化铁的表面增强的拉曼光谱生物探针用于检测瘤细胞在血清性输出中
Jiabao Guo1,2,3, Lei Xu1,2,3, Jing Wang1
1Department of Ultrasound Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China.
Analytical chemistry
|January 20, 2026
概括
这项研究引入了新的表面增强拉曼光谱 (SERS) 生物探针,用于检测血清性输液中的瘤细胞. 与传统细胞学相比,这种先进的方法提高了癌症转移检测的灵敏度.
科学领域:
- 生物医学工程 生物医学工程
- 分析化学 分析化学
- 在瘤学瘤学.
背景情况:
- 血清性输液 (多发性输液,) 在晚期癌症中很常见,检测瘤细胞对于评估转移至关重要.
- 目前的细胞学等方法的灵敏度有限,细胞块技术需要大量的样本.
- 表面增强拉曼光谱 (SERS) 为液体活检提供了一种敏感的,非侵入性的方法.
研究的目的:
- 开发和评估一种新的SERS生物探针,用于精确识别和捕获瘤细胞.
- 建立SERS分类模型,用于半定量评估瘤细胞度.
- 将SERS生物探针与机器学习相结合,以提高诊断准确性和效率.
主要方法:
- 使用复合材料的新型SERS生物探针被设计用于分子向和瘤细胞的捕获.
- 在血清性溢出样本上进行了SERS测量.
- 机器学习算法被用来分析拉曼光谱,分类样本和提取特征.
主要成果:
- SERS生物探测器显示出强烈的增强,光谱可重现性和分子向性,从而提高了检测特异性.
- 通过SERS分类模型,可以半定量评估血清液中瘤细胞度.
- 机器学习通过快速处理和分类拉曼光谱,显著提高了诊断准确度.
结论:
- 结合SERS生物探针和机器学习,提供了一种快速,灵敏和有效的方法来检测瘤细胞在血清液中.
- 这种方法克服了传统细胞检测的局限性,为癌症转移提供了更好的诊断能力.
- 该技术可以评估瘤细胞度范围,有助于癌症患者的管理.
相关概念视频
01:20Raman Spectroscopy: Overview
1.5K
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
1.5K
01:26Raman Spectroscopy Instrumentation: Overview
1.1K
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
1.1K
03:48Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion
31.2K
Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the average distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be...
31.2K
01:25Pleural Effusion I: Introduction
4.1K
Pleural effusion is an abnormal fluid accumulation in the pleural cavity, a narrow space between the lungs and the chest wall. It is not a disease per se but rather a symptom or indication of an underlying disease. In normal circumstances, this space contains a small amount of fluid (5 to 15 mL), a lubricant facilitating the non-frictional movement of the pleural surfaces.
There are two main types of pleural effusion: transudative and exudative. They are differentiated using Light's...
There are two main types of pleural effusion: transudative and exudative. They are differentiated using Light's...
4.1K
01:28Pleural Effusion II: Symptoms and Management
679
Pleural Effusion Overview
A pleural effusion is the abnormal collection of fluid between the parietal and visceral pleura layers of tissue that form the lining of the lungs and chest cavity. It can occur independently or due to surrounding parenchymal diseases, such as infection, malignancy, or inflammatory conditions.
Clinical Manifestations:
A pleural effusion is the abnormal collection of fluid between the parietal and visceral pleura layers of tissue that form the lining of the lungs and chest cavity. It can occur independently or due to surrounding parenchymal diseases, such as infection, malignancy, or inflammatory conditions.
Clinical Manifestations:
679
03:14Oxidation Numbers
42.2K
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules.
42.2K