Translocation or just location? Pseudopodia affect fluorescent signals.

Translocation or just location? Pseudopodia affect fluorescent signals.
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DOI:
10.1083/jcb.200806047
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发表时间:
2009-01-26
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Hallett MB
Hallett MB
中科院分区:
其他
文献类型:
--
作者:
Dewitt S;Darley RL;Hallett MB

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The use of fluorescent probes is one of the most powerful techniques for gaining spatial and temporal knowledge of dynamic events within living cells. Localized increases in the signal from cytosolic fluorescent protein constructs, for example, are frequently used as evidence for translocation of proteins to specific sites within the cell. However, differences in optical and geometrical properties of cytoplasm can influence the recorded intensity of the probe signal. Pseudopodia are especially problematic because their cytoplasmic properties can cause abrupt increases in fluorescent signal of both GFP and fluorescein. Investigators should therefore be cautious when interpreting fluorescence changes within a cell, as these can result from either translocation of the probe or changes in the optical properties of the milieu surrounding the probe.
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