以自然选择为指导的ACE2向分子成像:PET标记器开发的新范式
1Department of Nuclear Medicine, Shanghai Changhai Hospital, Shanghai 200433, China.
Chemical & biomedical imaging
|January 30, 2026
概括
研究人员开发了一种新Omi-X,用于对 ангиотензин转化酶2 (ACE2) 的非侵入性成像. 这种可以精确地绘制ACE2表达的地图,有助于诊断和治疗与氨酸 - 血管新生素系统有关的疾病.
科学领域:
- 生物医学成像技术 生物医学成像技术
- 分子生物学分子生物学
- 药物发现 药物发现 药物发现
背景情况:
- ангиотензин转化酶2 (ACE2) 是各种疾病的关键生物标志物和治疗点.
- 对ACE2的非侵入性体内可视化对于疾病管理和治疗评估至关重要.
研究的目的:
- 为ACE2开发一种高亲和性的向分子.
- 为了使非侵入性PET成像能够用于ACE2映射和评估相关疾病.
主要方法:
- 使用放射性免疫检测对RBD库从Omicron变体 (BA.1,BA.2,BA.5) 的查.
- 基于结合HEK293-hACE2细胞和分子对接验证的高通量选.
- 开发SPECT和PET成像追踪器 (I-Omi-X和Ga-DOTA-Omi-X) 用于生物分布和体内ACE2映射.
主要成果:
- 鉴定出Omi-X (505HQPYRVVLSFELLH519) 具有优越的ACE2结合亲和力.
- 在K18-hACE2小鼠的SPECT成像中,I标记的Omi-X显示出高的ACE2特异性和保留.
- 68Ga-DOTA-Omi-X成功实现了ACE2向的PET成像,适用于RAAS相关的疾病,如心脏缩.
结论:
- 欧米-X作为一种有效的工具,用于非侵入性ACE2可视化和映射.
- 这种方法为通过利用病毒宿主适应来开发向治疗提供了一个范例.
- 开发的成像追踪器为研究RAAS病理生理学和精确诊断提供了有价值的工具.
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