Comparison of phosphonate, hydroxypropyl and carboxylate pendants in Fe(III) macrocyclic complexes as MRI contrast agents.

Comparison of phosphonate, hydroxypropyl and carboxylate pendants in Fe(III) macrocyclic complexes as MRI contrast agents.
复制标题

DOI:
10.1016/j.jinorgbio.2021.111594
复制
发表时间:
2021-12
影响因子:
3.9
通讯作者:
Morrow, Janet R.
Morrow, Janet R.
中科院分区:
生物学2区
文献类型:
--
作者:
Kras, Elizabeth A.;Abozeid, Samira M.;Eduardo, Waldine;Spernyak, Joseph A.;Morrow, Janet R.

文献摘要

参考文献

被引文献

相似文献

含一个大环和三个侧基(包括膦酸酯)的Fe(III)大环配合物(NOTP = 1,4,7-三氮杂环壬烷-1,4,7-三基-三(亚甲基膦酸)羧酸酯(NOTA = 1,4,7-三氮杂环壬烷- N,N ',N”-三乙酸酯)或羟丙基(NOHP =(2S,2'S,2“S)− 1,1 ',1”-(1,4,7-三氮杂环戊烷-1,4,7-三基)三(丙-2-醇)),以比较这些供体基团对溶液化学和水质子弛豫率的影响。所有三种配合物,Fe(NOTP),Fe(NOHP)和Fe(NOTA),显示出很大程度的动力学惰性解离在磷酸盐和碳酸盐的存在下,在酸性条件下的100 mM HCl或1 M HCl或trans-metalation与Zn(II)。在1至10的pH范围内比较了在1.4 T、33 °C下络合物的r1质子弛豫率。在pH 7.4,33 °C,1.4 T下,Fe(NOHP)具有最大的弛豫率(1.5 mM− 1 s −1),Fe(NOTP)其次为1.0 mM− 1 s −1,而Fe(NOTA)最低为0.61 mM− 1 s −1。Fe(NOTP)、Fe(NOHP)和Fe(NOTA)都显示在非常酸性的pH值(< 3)下弛豫率增加,这与酸催化过程一致。在近中性pH值的变温17 O NMR研究是一致的,没有一个内层水分子的Fe(NOTP)和Fe(NOHP),支持第二球或外层水质子弛豫的贡献。Fe(NOTP)在小鼠的T1加权MRI研究中显示对比增强,并通过肾脏途径清除。
Fe(III) macrocyclic complexes containing a macrocycle and three pendant groups including phosphonate (NOTP =1,4,7-triazacyclononane-1,4,7-triyl-tris(methylenephosphonic acid), carboxylate (NOTA = 1,4,7 - triazacyclononane - N,N',N" – triacetate) or hydroxypropyl (NOHP =(2S,2'S,2”S)−1,1',1”-(1,4,7-triazonane-1,4,7-triyl)tris(propan-2-ol) ) were studied in order to compare the effect of these donor groups on solution chemistry and water proton relaxivity. All three complexes, Fe(NOTP), Fe(NOHP) and Fe(NOTA), display a large degree of kinetic inertness to dissociation in the presence of phosphate and carbonate, under acidic conditions of 100 mM HCl or 1 M HCl or to trans-metalation with Zn(II). The r1 proton relaxivity of the complexes at 1.4 T, 33 °C is compared over the pH range of 1 to 10. At pH 7.4, 33 °C, 1.4 T, Fe(NOHP) has the largest relaxivity (1.5 mM−1s−1), Fe(NOTP) is second at 1.0 mM−1s−1, whereas Fe(NOTA) is the lowest at 0.61 mM−1s−1. Fe(NOTP), Fe(NOHP) and Fe(NOTA) all show an increase in relaxivity at very acidic pH values (< 3) that is consistent with an acid-catalyzed process. Variable temperature 17O NMR studies at near neutral pH are consistent with the absence of an inner-sphere water molecule for Fe(NOTP) and Fe(NOHP), supporting second-sphere or outer-sphere water contributions to proton relaxation. Fe(NOTP) shows contrast enhancement in T1 weighted MRI studies in mice and clears through a renal pathway.
DOI: 10.3390/molecules25102291
发表时间: 2020-05-01
期刊: MOLECULES
影响因子: 4.6
作者:
Asik, Didar;Smolinski, Rachel;Morrow, Janet R.
通讯作者: Morrow, Janet R.
DOI: 10.1021/acs.inorgchem.0c00510
发表时间: 2020-05-18
影响因子: 4.6
作者:
Gupta A;Caravan P;Price WS;Platas-Iglesias C;Gale EM
通讯作者: Gale EM
MR成像探针:设计和应用。
DOI: 10.1039/c4dt02958e
发表时间: 2015-03-21
期刊: Dalton transactions (Cambridge, England : 2003)
影响因子: --
作者:
Boros E;Gale EM;Caravan P
通讯作者: Caravan P
DOI: 10.1002/mrm.28060
发表时间: 2019-11-01
影响因子: 3.3
作者:
Damme, Nikolas M.;Fernandez, Diego P.;Morton, Kathryn A.
通讯作者: Morton, Kathryn A.
DOI: 10.1016/s0020-1693(00)86821-8
发表时间: 1991-03-15
影响因子: 2.8
作者:
CLARKE, ET;MARTELL, AE
通讯作者: MARTELL, AE