摘要:利用放射性核素标志物靶向示踪肿瘤并盟像已成为肿瘤早期诊断的一种重要方法。精氨酸一甘氨酸一天冬氨酸(RGD)多肽可与肿瘤新生血管内皮细胞表达的整合素avβ3,特异性结合,用放射性核素标记RGD肽,利用分子影像技术可示踪肿瘤新生血管,从而在早期确立诊断。文章就近年来国内外RGD肽的修饰、标记方法、纳米技术应用进行阐述,并就利用avβ3,受体,综述了RGD肽介导的PET/SPECT显像、磁共振显像、超声显像、光学显像临床应用进展。
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