Characterization of a lanthanide complex encapsulated with MRI contrast agents into liposomes for biosensor imaging of redundant deviation in shifts (BIRDS)
Identifieur interne : 000337 ( Pmc/Corpus ); précédent : 000336; suivant : 000338Characterization of a lanthanide complex encapsulated with MRI contrast agents into liposomes for biosensor imaging of redundant deviation in shifts (BIRDS)
Auteurs : Samuel Maritim ; Yuegao Huang ; Daniel Coman ; Fahmeed HyderSource :
- Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry [ 0949-8257 ] ; 2014.
Abstract
Purposely-designed magnetic resonance imaging (MRI) probes encapsulated in liposomes, which alter contrast by their paramagnetic effect on longitudinal (T1) and transverse (T2) relaxation times of tissue water, hold promise for molecular imaging. However a challenge with liposomal MRI probes that are solely dependent on enhancement of water relaxation is lack of specific molecular readouts, especially in strong paramagnetic environments, thereby reducing the potential for monitoring disease treatment (e.g., cancer) beyond the generated MRI contrast. Previously it has been shown that molecular imaging with magnetic resonance is also possible by detecting the signal of non-exchangeable protons emanating from paramagnetic lanthanide complexes themselves (e.g., TmDOTP5−, which is a Tm3+-containing biosensor based on a macrocyclic chelate 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylene phosphonate), DOTP5−) with a method called Biosensor Imaging of Redundant Deviation in Shifts (BIRDS). Here we show that BIRDS is useful for molecular imaging with probes like TmDOTP5− even when they are encapsulated inside liposomes with ultra-strong T1 and T2 contrast agents (e.g., Magnevist and Molday ION, respectively). We demonstrate that molecular readouts like pH and temperature determined from probes like TmDOTP5− are resilient, because sensitivity of the chemical shifts to the probe’s environment is not compromised by presence of other paramagnetic agents contained within the same nanocarrier milieu. Because high liposomal encapsulation efficiency allows for robust MRI contrast and signal amplification for BIRDS, nanoengineered liposomal probes containing both monomers like TmDOTP5− and paramagnetic contrast agents could allow high spatial resolution imaging of disease diagnosis (with MRI) and status monitoring (with BIRDS).
Url:
DOI: 10.1007/s00775-014-1200-z
PubMed: 25304046
PubMed Central: 4348029
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PMC:4348029Le document en format XML
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<author><name sortKey="Maritim, Samuel" sort="Maritim, Samuel" uniqKey="Maritim S" first="Samuel" last="Maritim">Samuel Maritim</name>
<affiliation><nlm:aff id="A1">Department of Biomedical Engineering, Yale University, New Haven, CT, USA</nlm:aff>
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<author><name sortKey="Huang, Yuegao" sort="Huang, Yuegao" uniqKey="Huang Y" first="Yuegao" last="Huang">Yuegao Huang</name>
<affiliation><nlm:aff id="A2">Department of Diagnostic Radiology, Yale University, New Haven, CT, USA</nlm:aff>
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<affiliation><nlm:aff id="A3">Magnetic Resonance Research Center, Yale University, New Haven, CT, USA</nlm:aff>
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<author><name sortKey="Coman, Daniel" sort="Coman, Daniel" uniqKey="Coman D" first="Daniel" last="Coman">Daniel Coman</name>
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<affiliation><nlm:aff id="A4">Quantitative Neuroscience with Magnetic Resonance Core Center, Yale University, New Haven, CT, USA</nlm:aff>
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<author><name sortKey="Hyder, Fahmeed" sort="Hyder, Fahmeed" uniqKey="Hyder F" first="Fahmeed" last="Hyder">Fahmeed Hyder</name>
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<front><div type="abstract" xml:lang="en"><p id="P1">Purposely-designed magnetic resonance imaging (MRI) probes encapsulated in liposomes, which alter contrast by their paramagnetic effect on longitudinal (T<sub>1</sub>
) and transverse (T<sub>2</sub>
) relaxation times of tissue water, hold promise for molecular imaging. However a challenge with liposomal MRI probes that are solely dependent on enhancement of water relaxation is lack of specific molecular readouts, especially in strong paramagnetic environments, thereby reducing the potential for monitoring disease treatment (e.g., cancer) beyond the generated MRI contrast. Previously it has been shown that molecular imaging with magnetic resonance is also possible by detecting the signal of non-exchangeable protons emanating from paramagnetic lanthanide complexes themselves (e.g., TmDOTP<sup>5−</sup>
, which is a Tm<sup>3+</sup>
-containing biosensor based on a macrocyclic chelate 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylene phosphonate), DOTP<sup>5−</sup>
) with a method called Biosensor Imaging of Redundant Deviation in Shifts (BIRDS). Here we show that BIRDS is useful for molecular imaging with probes like TmDOTP<sup>5−</sup>
even when they are encapsulated inside liposomes with ultra-strong T<sub>1</sub>
and T<sub>2</sub>
contrast agents (e.g., Magnevist and Molday ION, respectively). We demonstrate that molecular readouts like pH and temperature determined from probes like TmDOTP<sup>5−</sup>
are resilient, because sensitivity of the chemical shifts to the probe’s environment is not compromised by presence of other paramagnetic agents contained within the same nanocarrier milieu. Because high liposomal encapsulation efficiency allows for robust MRI contrast and signal amplification for BIRDS, nanoengineered liposomal probes containing both monomers like TmDOTP<sup>5−</sup>
and paramagnetic contrast agents could allow high spatial resolution imaging of disease diagnosis (with MRI) and status monitoring (with BIRDS).</p>
</div>
</front>
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<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<pmc-dir>properties manuscript</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-journal-id">9616326</journal-id>
<journal-id journal-id-type="pubmed-jr-id">21442</journal-id>
<journal-id journal-id-type="nlm-ta">J Biol Inorg Chem</journal-id>
<journal-id journal-id-type="iso-abbrev">J. Biol. Inorg. Chem.</journal-id>
<journal-title-group><journal-title>Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry</journal-title>
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<issn pub-type="ppub">0949-8257</issn>
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<article-id pub-id-type="manuscript">NIHMS634792</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Article</subject>
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</article-categories>
<title-group><article-title>Characterization of a lanthanide complex encapsulated with MRI contrast agents into liposomes for biosensor imaging of redundant deviation in shifts (BIRDS)</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Maritim</surname>
<given-names>Samuel</given-names>
</name>
<xref ref-type="aff" rid="A1">1</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Huang</surname>
<given-names>Yuegao</given-names>
</name>
<xref ref-type="aff" rid="A2">2</xref>
<xref ref-type="aff" rid="A3">3</xref>
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<contrib contrib-type="author"><name><surname>Coman</surname>
<given-names>Daniel</given-names>
</name>
<xref ref-type="aff" rid="A2">2</xref>
<xref ref-type="aff" rid="A3">3</xref>
<xref ref-type="aff" rid="A4">4</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Hyder</surname>
<given-names>Fahmeed</given-names>
</name>
<xref ref-type="aff" rid="A1">1</xref>
<xref ref-type="aff" rid="A2">2</xref>
<xref ref-type="aff" rid="A3">3</xref>
<xref ref-type="aff" rid="A4">4</xref>
</contrib>
</contrib-group>
<aff id="A1"><label>1</label>
Department of Biomedical Engineering, Yale University, New Haven, CT, USA</aff>
<aff id="A2"><label>2</label>
Department of Diagnostic Radiology, Yale University, New Haven, CT, USA</aff>
<aff id="A3"><label>3</label>
Magnetic Resonance Research Center, Yale University, New Haven, CT, USA</aff>
<aff id="A4"><label>4</label>
Quantitative Neuroscience with Magnetic Resonance Core Center, Yale University, New Haven, CT, USA</aff>
<author-notes><corresp id="CR1">Correspondence to: Samuel Maritim / D. S. Fahmeed Hyder, N143 TAC (MRRC), 300 Cedar Street, Yale University, New Haven, CT 06520, USA, Tel: +1-203-785-6206, Fax: +1-203-785-6643, <email>samuel.maritim@yale.edu</email>
/ <email>fahmeed.hyder@yale.edu</email>
</corresp>
</author-notes>
<pub-date pub-type="nihms-submitted"><day>5</day>
<month>12</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub"><day>11</day>
<month>10</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="ppub"><month>12</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="pmc-release"><day>01</day>
<month>12</month>
<year>2015</year>
</pub-date>
<volume>19</volume>
<issue>8</issue>
<fpage>1385</fpage>
<lpage>1398</lpage>
<pmc-comment>elocation-id from pubmed: 10.1007/s00775-014-1200-z</pmc-comment>
<abstract><p id="P1">Purposely-designed magnetic resonance imaging (MRI) probes encapsulated in liposomes, which alter contrast by their paramagnetic effect on longitudinal (T<sub>1</sub>
) and transverse (T<sub>2</sub>
) relaxation times of tissue water, hold promise for molecular imaging. However a challenge with liposomal MRI probes that are solely dependent on enhancement of water relaxation is lack of specific molecular readouts, especially in strong paramagnetic environments, thereby reducing the potential for monitoring disease treatment (e.g., cancer) beyond the generated MRI contrast. Previously it has been shown that molecular imaging with magnetic resonance is also possible by detecting the signal of non-exchangeable protons emanating from paramagnetic lanthanide complexes themselves (e.g., TmDOTP<sup>5−</sup>
, which is a Tm<sup>3+</sup>
-containing biosensor based on a macrocyclic chelate 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylene phosphonate), DOTP<sup>5−</sup>
) with a method called Biosensor Imaging of Redundant Deviation in Shifts (BIRDS). Here we show that BIRDS is useful for molecular imaging with probes like TmDOTP<sup>5−</sup>
even when they are encapsulated inside liposomes with ultra-strong T<sub>1</sub>
and T<sub>2</sub>
contrast agents (e.g., Magnevist and Molday ION, respectively). We demonstrate that molecular readouts like pH and temperature determined from probes like TmDOTP<sup>5−</sup>
are resilient, because sensitivity of the chemical shifts to the probe’s environment is not compromised by presence of other paramagnetic agents contained within the same nanocarrier milieu. Because high liposomal encapsulation efficiency allows for robust MRI contrast and signal amplification for BIRDS, nanoengineered liposomal probes containing both monomers like TmDOTP<sup>5−</sup>
and paramagnetic contrast agents could allow high spatial resolution imaging of disease diagnosis (with MRI) and status monitoring (with BIRDS).</p>
</abstract>
</article-meta>
</front>
</pmc>
</record>
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