Synergy between surface and core entrapped metals in a mixed manganese-gadolinium nanocolloid affords safer MR imaging of sparse biomarkers.
Synergy between surface and core entrapped metals in a mixed manganese-gadolinium nanocolloid affords safer MR imaging of sparse biomarkers.
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混合锰钆纳米胶体中表面和核心包埋金属之间的协同作用可为稀疏生物标志物提供更安全的 MR 成像。
DOI:
10.1016/j.nano.2014.12.009
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发表时间:
2015-04
期刊:
影响因子:
--
通讯作者:
Lanza GM
中科院分区:
文献类型:
--
作者:
Wang K;Pan D;Schmieder AH;Senpan A;Hourcade DE;Pham CT;Mitchell LM;Caruthers SD;Cui G;Wickline SA;Shen B;Lanza GM
High-relaxivity T1-weighted (T1w) MR molecular imaging nanoparticles typically present high surface gadolinium payloads that can elicit significant acute complement activation (CA). The objective of this research was to develop a high T1 contrast nanoparticle, which reduced gadolinium exposure, minimized gadolinium transmetallation risk, and elicited negligible acute complement activation. We report the development, optimization, and characterization of a gadolinium-manganese hybrid nanocolloid (MnOL-Gd NC; 138±10 (Dav)/nm; PDI: 0.06; zeta: −27±2 mV). High r1 particulate relaxivity with minute additions of Gd-DOTA-lipid conjugate to the MnOL nanocolloid surface achieved an unexpected paramagnetic synergism. This hybrid MnOL-Gd NC provided optimal MR TSE signal intensity at 5nM/voxel and lower levels, consistent with the level expression anticipated for sparse biomarkers such as neovascular integrins. MnOL NC produced optimal MR TSE signal intensity at 10nM/voxel concentrations and above. Importantly, MnOL-Gd NC avoided acute CA in vitro and in vivo, while retaining minimal transmetallation risk.
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影响因子:
4.8
作者:
Schmieder, Anne H.;Caruthers, Shelton D.;Lanza, Gregory M.
通讯作者:
Lanza, Gregory M.
影响因子:
37.8
作者:
Flacke, S;Fischer, S;Lanza, GM
通讯作者:
Lanza, GM
影响因子:
15
作者:
Pan, Dipanjan;Caruthers, Shelton D.;Lanza, Gregory M.
通讯作者:
Lanza, Gregory M.
影响因子:
4.8
作者:
Pham, Christine T. N.;Mitchell, Lynne M.;Hourcade, Dennis E.
通讯作者:
Hourcade, Dennis E.
影响因子:
4.8
作者:
Winter, Patrick M.;Schmieder, Anne H.;Lanza, Gregory M.
通讯作者:
Lanza, Gregory M.