单个粒子的追踪的用光使敏化的本地化显微镜学(sptPALM ) 最近为高密度的成像作为一个强大的工具出现了并且在生活房间单个分子追踪。在这个工作,我们在两个都使用传统的单个粒子的追踪的高表示水平(SPT ) 和 sptPALM 监视了并且比较 TGF- 类型 II 受体(TRII ) 的散开动力学。TRII oligomers 的导致 ligand 的聚集被 sptPALM 进一步显示。由于在衍射限制以内区分并且追踪单个分子的能力, sptPALM 由提供更精确的生物物理的信息超过传统的 SPT。
Single-particle tracking photoactivated local- ization microscopy (sptPALM) has recently emerged as a powerful tool for high-density imaging and tracking of individual molecules in living cells. In this work, we have monitored and compared the diffusion dynamics of TGF-β type II receptor (TβRII) at high expression level using both traditional single-particle tracking (SPT) and sptPALM. The ligand-induced aggregation of TβRII oligomers was further indicated by sptPALM. Due to the capacity of distinguishing and tracking single molecules within diffraction limit, sptPALM outperforms traditional SPT by providing more accurate biophysical information,