Title:Radiolabeled Peptides for Molecular Imaging of Apoptosis
Volume: 27
Issue: 41
关键词:
分子成像,细胞凋亡,磷脂,活化的胱天蛋白酶,单光子发射计算机断层扫描(SPECT),正电子发射断层扫描(PET)。
摘要: Apoptosis is a regulated cell death induced by extrinsic and intrinsic stimulants.
Tracking of apoptosis provides an opportunity for the assessment of cardiovascular and neurodegenerative
diseases as well as monitoring of cancer therapy at early stages. There are
some key mediators in apoptosis cascade, which could be considered as specific targets for
delivering imaging or therapeutic agents. The targeted radioisotope-based imaging agents are
able to sensitively detect the physiological signal pathways which make them suitable for
apoptosis imaging at a single-cell level. Radiopeptides take advantage of both the high sensitivity
of nuclear imaging modalities and favorable features of peptide scaffolds. The aim of
this study is to review the characteristics of those radiopeptides targeting apoptosis with different
mechanisms.