1
|
Gambino G, Gambino T, Connah L, La Cava F, Evrard H, Angelovski G. RGD-Peptide Functionalization Affects the In Vivo Diffusion of a Responsive Trimeric MRI Contrast Agent through Interactions with Integrins. J Med Chem 2021; 64:7565-7574. [PMID: 33961422 PMCID: PMC8279402 DOI: 10.1021/acs.jmedchem.1c00264] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The relevance of
MRI as a diagnostic methodology has been expanding
significantly with the development of molecular imaging. Partially,
the credit for this advancement is due to the increasing potential
and performance of targeted MRI contrast agents, which are able to
specifically bind distinct receptors or biomarkers. Consequently,
these allow for the identification of tissues undergoing a disease,
resulting in the over- or underexpression of the particular molecular
targets. Here we report a multimeric molecular probe, which combines
the established targeting properties of the Arg-Gly-Asp (RGD) peptide
sequence toward the integrins with three calcium-responsive, Gd-based
paramagnetic moieties. The bifunctional probe showed excellent 1H MRI contrast enhancement upon Ca2+ coordination
and demonstrated a longer retention time in the tissue due to the
presence of the RGD moiety. The obtained results testify to the potential
of combining bioresponsive contrast agents with targeting vectors
to develop novel functional molecular imaging methods.
Collapse
Affiliation(s)
- Giuseppe Gambino
- Max Planck Institute for Biological Cybernetics, Department for Physiology of Cognitive Processes, Max-Planck-Ring 11, 72072 Tübingen, Germany
| | - Tanja Gambino
- Max Planck Institute for Biological Cybernetics, Department for Physiology of Cognitive Processes, Max-Planck-Ring 11, 72072 Tübingen, Germany
| | - Liam Connah
- Max Planck Institute for Biological Cybernetics, Department for Physiology of Cognitive Processes, Max-Planck-Ring 11, 72072 Tübingen, Germany
| | - Francesca La Cava
- Max Planck Institute for Biological Cybernetics, Department for Physiology of Cognitive Processes, Max-Planck-Ring 11, 72072 Tübingen, Germany
| | - Henry Evrard
- Max Planck Institute for Biological Cybernetics, Department for Physiology of Cognitive Processes, Max-Planck-Ring 11, 72072 Tübingen, Germany.,Nathan S. Kline Institute for Psychiatric Research, 140 Old Orangeburg Road, Orangeburg, New York 10962, United States.,Werner Reichardt Centre for Integrative Neuroscience, University of Tübingen, Otfried-Müller-Strasse 25, 72076 Tübingen, Germany
| | - Goran Angelovski
- Max Planck Institute for Biological Cybernetics, Department for Physiology of Cognitive Processes, Max-Planck-Ring 11, 72072 Tübingen, Germany.,Laboratory of Molecular and Cellular Neuroimaging, International Center for Primate Brain Research (ICPBR), Center for Excellence in Brain Science and Intelligence Technology (CEBSIT), Chinese Academy of Sciences (CAS), Shanghai 200031, PR China
| |
Collapse
|
2
|
Martinelli J, Jiménez-Juárez R, Alberti D, Geninatti Crich S, Djanashvili K. Solid-phase synthesis and evaluation of tumour-targeting phenylboronate-based MRI contrast agents. Org Biomol Chem 2020; 18:7899-7906. [PMID: 33000853 DOI: 10.1039/d0ob01552k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Paramagnetic macrocycles functionalized with phenylboronic moieties have proven to be interesting for MRI applications based on their ability to recognize cancer cells and generate local contrast. However, full use of the potential of this class of compounds is hampered by laborious and inefficient synthetic and, especially, purification procedures. The amphiphilic character of water-soluble phenylboronates renders them difficult compounds to be prepared through conventional solution synthesis due to the tendency to aggregate and form adducts with other nucleophiles. The new strategy described herein exploits the advantage of solid-phase synthesis with the application of DEAM-PS resin for anchorage and the subsequent simplified derivatization of boronates. GdDOTA-EN-PBA and its fluorinated analogue GdDOTA-EN-F2PBA were synthesized in a much easier, faster and economically convenient way to achieve good yields and purity. Furthermore, the effect of electron-withdrawing fluorine atoms on the aromatic ring of the latter compound was investigated by comparing the physico-chemical properties of both compounds as well as their binding affinity towards melanoma cancer cells.
Collapse
Affiliation(s)
- Jonathan Martinelli
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
| | | | | | | | | |
Collapse
|
3
|
Connah L, Angelovski G. Solid phase synthesis in the development of magnetic resonance imaging probes. Org Chem Front 2020. [DOI: 10.1039/d0qo00921k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We review the use of the solid phase synthesis methodology for the preparation of diverse and potent MRI probes.
Collapse
Affiliation(s)
- Liam Connah
- MR Neuroimaging Agents
- Max Planck Institute for Biological Cybernetics
- Tuebingen
- Germany
| | - Goran Angelovski
- MR Neuroimaging Agents
- Max Planck Institute for Biological Cybernetics
- Tuebingen
- Germany
- Laboratory of Molecular and Cellular Neuroimaging
| |
Collapse
|