Peptide-based, two-fluorophore, ratiometric probe for quantifying mobile zinc in biological solutions.
Peptide-based, two-fluorophore, ratiometric probe for quantifying mobile zinc in biological solutions.
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DOI:
10.1021/cb500617c
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发表时间:
2015-02-20
影响因子:
4
通讯作者:
Radford, Robert J.
中科院分区:
文献类型:
--
作者:
Zhang, Daniel Y.;Azrad, Maria;Demark-Wahnefried, Wendy;Frederickson, Christopher J.;Lippard, Stephen J.;Radford, Robert J.
Small-molecule fluorescent sensors are versatile agents for detecting mobile zinc in biology. Capitalizing on the abundance of validated mobile zinc probes, we devised a strategy for repurposing existing intensity-based sensors for quantitative applications. Using solid-phase peptide synthesis, we conjugated a zinc-sensitive Zinpyr-1 derivative and a zinc-insensitive 7-hydroxycoumarin derivative onto opposite ends of a rigid P9K peptide scaffold to create HcZ9, a ratiometric fluorescent probe for mobile zinc. A plate reader-based assay using HcZ9 was developed, the accuracy of which is comparable to that of atomic absorption spectroscopy. We investigated zinc accumulation in prostatic cells and zinc levels in human seminal fluid. When normal and tumorigenic cells are bathed in zinc-enriched media, cellular mobile zinc is buffered and changes slightly, but total zinc levels increase significantly. Quantification of mobile and total zinc levels in human seminal plasma revealed that the two are positively correlated with a Pearson’s coefficient of 0.73.
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影响因子:
10.6
作者:
Franz, M-C;Anderle, P.;Buerzle, M.;Suzuki, Y.;Freeman, M. R.;Hediger, M. A.;Kovacs, G.
通讯作者:
Kovacs, G.
DOI:
10.1158/1055-9965.epi-08-0008
发表时间:
2008-12
期刊:
Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology
影响因子:
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作者:
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DOI:
10.1073/pnas.1310583110
发表时间:
2014-01-07
影响因子:
11.1
作者:
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通讯作者:
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影响因子:
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影响因子:
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作者:
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Franklin, R. B.