Paramagnetic F-19 Relaxation Enhancement in Nickel(II) Complexes of N-Trifluoroethyl Cyclam Derivatives and Cell Labeling for F-19 MRI
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F17%3A00482651" target="_blank" >RIV/61388963:_____/17:00482651 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/17:10365950 RIV/00216208:11320/17:10365950 RIV/00023001:_____/17:00076208
Result on the web
<a href="http://dx.doi.org/10.1021/acs.inorgchem.7b02119" target="_blank" >http://dx.doi.org/10.1021/acs.inorgchem.7b02119</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.inorgchem.7b02119" target="_blank" >10.1021/acs.inorgchem.7b02119</a>
Alternative languages
Result language
angličtina
Original language name
Paramagnetic F-19 Relaxation Enhancement in Nickel(II) Complexes of N-Trifluoroethyl Cyclam Derivatives and Cell Labeling for F-19 MRI
Original language description
1,8-Bis(2,2,2-trifluoroethyl)cyclam (te2f) derivatives with two coordinating pendant arms involving methylenecarboxylic acid (H(2)te2f2a), methylenephosphonic acid (H(4)te2f2p), (2-pyridyl)methyl (te2f2py), and 2-aminoethyl arms (te2f2ae) in 4,11-positions were prepared, and their nickel(II) complexes were investigated as possible F-19 MR tracers. The solid-state structures of several synthetic intermediates, ligands, and all complexes were confirmed by Xray diffraction analysis. The average Ni center dot center dot center dot F distances were determined to be about 5.2 angstrom. All complexes exhibit a trans-III cyclam conformation with pendant arms bound in the apical positions. Kinetic inertness of the complexes is increased in the ligand order te2f2ae << te2f < te2f2py approximate to H(4)te2f2p << H(2)te2f2a. The [Ni(te2f2a)] complex is the most kinetically inert Ni(II) complex reported so far. Paramagnetic divalent nickel caused a shortening of F-19 NMR relaxation time down to the millisecond range. Solubility, stability, and cell toxicity were only satisfactory for the [Ni(te2f2p)](2-) complex This complex was visualized by F-19 MRI utilizing an ultrashort echo time (UTE) imaging pulse sequence, which led to an increase in sensitivity gain. Mesenchymal stem cells were successfully loaded with the complex (up to 0.925/5.55 pg Ni/F per cell). F-19 MRI using a UTE pulse sequence provided images with a good signal-to-noise ratio within the measurement time, as short as tens of minutes. The data thus proved a major sensitivity gain in F-19 MRI achieved by utilization of the paramagnetic (transition) metal complex as F-19 MR tracers coupled with the optimal fast imaging protocol.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Inorganic Chemistry
ISSN
0020-1669
e-ISSN
—
Volume of the periodical
56
Issue of the periodical within the volume
21
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
13337-13348
UT code for WoS article
000414820100073
EID of the result in the Scopus database
2-s2.0-85033384263