In Vivo Imaging of Near-Membrane Calcium Ions with Two-Photon Probes
作者:Chang Su Lim、Min Young Kang、Ji Hee Han、Isravel Antony Danish、Bong Rae Cho
DOI:10.1002/asia.201100156
日期:2011.8.1
report a two‐photon (TP) probe (ACaLN) for near‐membrane Ca2+ that shows a 13‐fold TP excited fluorescence (TPEF) enhancement in response to Ca2+, dissociationconstants (KdTP) of (1.9±0.2) μM, pH‐insensitivity at the biologically relevant pH, and can detect near‐membrane Ca2+ in livecells for more than 1500 s and in living tissues at 120 μm depth without interference from other metal ions. Comparison
我们报道了一种用于近膜Ca 2+的双光子(TP)探针(ACaLN),该探针显示响应Ca 2+的13倍TP激发荧光(TPEF)增强,解离常数(K d TP)为(1.9 ±0.2)μM,在生物学相关的pH值下对pH不敏感,可以检测活细胞中近膜Ca 2+超过1500 s并在120μm深度的活组织中检测到近膜Ca 2+,而不受其他金属离子的干扰。与现有探针的比较为设计用于近膜金属离子的高效TP探针提供了有用的策略。