针对CXCR4的敏感磁粒子成像用于腹腔大动脉动脉瘤的早期检测和预后评估,通过识别总炎症细胞来评估预后
Genmao Cao1, Ruijing Zhang2, Xiaohua Jia3,4
1Department of Vascular Surgery, 2nd Hospital of Shanxi Medical University, No. 382, Wuyi Road, Taiyuan 030001, China.
Cardiovascular research
|December 10, 2024
概括
研究人员确定CXCR4是腹腔大动脉瘤 (AAA) 炎症的关键标志物. 针对CXCR4的探针使多式成像能够用于早期AAA检测和预后,显示治疗潜力.
科学领域:
- 血管生物学 血管生物学
- 生物医学成像技术 生物医学成像技术
- 免疫学 免疫学 免疫学
背景情况:
- 腹腔大动脉瘤 (AAA) 诊断依赖于最大的大动脉直径,需要先进的成像来预后和早期检测.
- 目前的方法缺乏足够的灵敏度,用于早期AAA形成和详细的炎症评估.
- 识别有效的炎症标志物对于开发AAA的新诊断和预后工具至关重要.
研究的目的:
- 通过单细胞测序来确定AAA最有效的炎症标志物.
- 开发用于AAA炎症体内多式成像的新型探针.
- 评估这些探针在AAA早期检测和预后方面的潜力.
主要方法:
- 单细胞RNA测序 (scRNAseq) 在人类大动脉动脉瘤组织上进行.
- 确定了CXCR4作为一个关键标记物,并且抗CXCR4-PE抗体与超偏磁铁氧化物纳米粒子 (Fe3O4-anti-CXCR4-PE) 结合.
- 在体内和体外研究验证了探针的生物相容性和特异性,随后在AAA小鼠模型中进行磁粒子成像 (MPI) 和光成像 (FLI).
主要成果:
- scRNAseq揭示了CXCR4作为最具代表性的标记物,在与化学激素相关的途径上调并标记与AAA相关的免疫和炎症性血管细胞.
- Fe3O4-anti-CXCR4-PE探针证明了有效地识别炎症细胞,MPI和FLI信号与AAA严重程度和破裂风险相关.
- 探测器成功地确定了超声波无法检测的早期AAA形成,而AMD3100治疗在小鼠模型中抑制了AAA进展.
结论:
- 在AAA中,CXCR4是免疫和炎症细胞的显著标记物,与小鼠模型中的预后相关.
- 针对CXCR4的多式联络MPI/FLI提供了AAA预后预测的新方法.
- 这一策略为早期检测腹腔大动脉动脉瘤提供了一个有希望的途径.
更多相关视频
09:32Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
Published on: December 9, 2021
2.9K
06:46Quantitative Micro-CT Analysis of Aortopathy in a Mouse Model of β-aminopropionitrile-induced Aortic Aneurysm and Dissection
Published on: July 16, 2018
9.5K
相关概念视频
Imaging Studies for Cardiovascular System IV: CMRI
5
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
5
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
3
Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
3
