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.
复制标题

DOI:
10.1021/cb500617c
复制
发表时间:
2015-02-20
影响因子:
4
通讯作者:
Radford, Robert J.
Radford, Robert J.
中科院分区:
生物学2区
文献类型:
--
作者:
Zhang, Daniel Y.;Azrad, Maria;Demark-Wahnefried, Wendy;Frederickson, Christopher J.;Lippard, Stephen J.;Radford, Robert J.

文献摘要

参考文献

被引文献

相似文献

小分子荧光传感器是检测生物体内移动的锌的通用试剂。利用丰富的经验证的移动的锌探针,我们设计了一种策略,用于重新利用现有的基于强度的传感器进行定量应用。使用固相肽合成,我们将锌敏感的Zinpyr-1衍生物和锌不敏感的7-羟基香豆素衍生物缀合到刚性P9 K肽支架的相对两端,以产生HcZ 9,一种用于移动的锌的比率荧光探针。开发了使用HcZ 9的基于平板读数器的测定,其准确度与原子吸收光谱法相当。我们研究了锌在前列腺细胞中的积累和人精液中的锌水平。当正常和致瘤细胞浸泡在富锌培养基中时,细胞移动的锌被缓冲并略有变化,但总锌水平显著增加。人精浆中移动的和总锌水平的定量显示,两者呈正相关,Pearson系数为0.73。
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.
DOI: 10.1016/j.mam.2012.11.007
发表时间: 2013-04
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: --
作者:
Demark-Wahnefried W;Polascik TJ;George SL;Switzer BR;Madden JF;Ruffin MT 4th;Snyder DC;Owzar K;Hars V;Albala DM;Walther PJ;Robertson CN;Moul JW;Dunn BK;Brenner D;Minasian L;Stella P;Vollmer RT
通讯作者: Vollmer RT
DOI: 10.1073/pnas.1310583110
发表时间: 2014-01-07
影响因子: 11.1
作者:
Chyan, Wen;Zhang, Daniel Y.;Radford, Robert J.
通讯作者: Radford, Robert J.
DOI: 10.3945/an.112.003038
发表时间: 2013-01-01
影响因子: 9.3
作者:
Maret, Wolfgang
通讯作者: Maret, Wolfgang
DOI: 10.1038/pcan.2008.19
发表时间: 2009
影响因子: 4.8
作者:
Costello, L. C.;Franklin, R. B.
通讯作者: Franklin, R. B.