819869-77-7Relevant articles and documents
RGD-cyclam conjugate: Synthesis and potential application for positron emission tomography
Galibert, Mathieu,Jin, Zhao-Hui,Furukawa, Takako,Fukumura, Toshimitsu,Saga, Tsuneo,Fujibayashi, Yasuhisa,Dumy, Pascal,Boturyn, Didier
, p. 5422 - 5425 (2010)
Cyclam and DOTA-containing positron emission tomography radiotracers were prepared by using a modular chemical strategy based on peptide synthesis and chemoselective ligations. These molecules encompass two functional domains, one a tumour 'homing' domain and the other a chelating ligand for copper allowing nuclear imaging of tumours.
A bimodal MRI and NIR liposome nanoprobe for tumor targeted molecular imaging
Wang, Huihui,Wu, Hao,Shen, Hujun,Geng, Shaote,Wang, Beibei,Wang, Yanfang,Ma, Xiaojun,Li, Guohui,Tan, Mingqian
supporting information, p. 8832 - 8841 (2015/11/24)
The combination of complementary MRI and NIR imaging methods evolved to provide an even more powerful bioimaging tool. Herein, a novel bimodal MRI/NIR nanoprobe GCF-HDA was prepared via a facile self-assembly approach of three types of amphiphilic structures in aqueous solution. The Stokes shift of the NIR moiety increased from 30 to 150 nm and fluorescence quantum yield increased from 1.5 to 8% after conjugation with electron-rich hexadecylamine (HDA) to organic dye Cy7. The photostability of the nanoprobe GCF-HDA was dramatically improved after involving the newly synthesized dye. Molecular dynamics simulation demonstrated that the GCF-HDA is composed of 2.0-3.5 nm clusters and in each cluster the head groups of the amphiphilic molecules assemble together and the tail groups point outwards. The r1 and r2 relaxivities of GCF-HDA were found to be 11.87 and 19.91 mM-1 s-1 per Gd(iii) chelate at 0.5 T, respectively. In vitro cellular imaging with human glioma U-87 MG cells showed that the GCF-HDA was able to enter the cells and accumulate in the cytoplasm. The targeted GCF-HDA resulted in higher MR contrast enhancement and stronger fluorescence intensity than the corresponding non-targeted probe GC-HDA in the tumor tissue 96 hours post injection. Ex vivo fluorescence imaging and histological analysis of the tumor tissue further confirmed the specific binding ability of the GCF-HDA.
Conjugates of the B-subunit of shiga toxin for use as contrasting agents for imaging and therapy
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, (2014/06/24)
Multivalent conjugates comprising the following formula: (STxB-linker A-S)x-GNS-(S-linker B-T)y wherein STxB is the B-subunit of Shiga toxin; linker A is a noncleavable linker; linker B is a cleavable linker used to release at least
CONJUGATES OF THE B-SUBUNIT OF SHIGA TOXIN FOR USE AS CONTRASTING AGENTS FOR IMAGING AND THERAPY
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, (2014/06/24)
Multivalent conjugates comprising the following formula: (STxB-linker A-S)x-GNS-(S-linker B-T)y wherein STxB is the B-subunit of Shiga toxin; linker A is a noncleavable linker; linker B is a cleavable linker used to release at least
LDL-based nanoparticles for contrast enhanced MRI of atheroplaques in mouse models
Yamakoshi, Yoko,Qiao, Hui,Lowell, Andrew N.,Woods, Mark,Paulose, Betty,Nakao, Yuka,Zhang, Hualei,Liu, Ting,Lund-Katz, Sissel,Zhou, Rong
, p. 8835 - 8837 (2011/09/21)
A LDL particle functionalized with a GdDO3A-monoamide chelate with a long alkenyl anchor (GdDO3A-OA) was prepared for in vivo detection of atheroplaques. The GdDO3A-OA, when successfully intercalated into the lipid layer of LDL particles, led to a signifi
CASCADE MACROMOLECULAR CONTRAST AGENTS FOR MEDICAL IMAGING
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Page/Page column 22, (2010/11/28)
The present invention provides macromolecular contrast media for diagnostic imaging modalities.
Multimodal image-guided enzyme/prodrug cancer therapy
Li, Cong,Winnard Jr., Paul T.,Takagi, Tomoyo,Artemov, Dmitri,Bhujwalla, Zaver M.
, p. 15072 - 15073 (2007/10/03)
The conjugate of bacterial cytosine deaminase (bCD) and poly-l-lysine (PLL) that was functionalized with biotin, rhodamine, and Gd3+-DOTA was synthesized and characterized. It demonstrated high relaxivity, improved enzymatic specificity to prodrug 5-fluorocytosine, low cytotoxicity, efficient cell uptake, and high enzymatic stability in fresh mouse serum and human breast cancer cell culture. Copyright
Process for making a chelating agent for labeling biomolecules using preformed active esters
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Page column 11, (2008/06/13)
The present invention is directed, in general, to a method for making high yields of functionalized cyclic or acyclic tertiary amine-containing compounds, termed active esters, the functionalized compounds themselves, and diagnostic or therapeutic systems incorporating such compounds. Ester groups are attached to all but one of its Nitrogen atoms of the tertiary amine-containing compound. Therefore, an active agent, in the presence of coupling agent, attaches to the remaining amine via a carboxylate group attached to the amine, to produce high yields of the active ester. The active ester is then combined with a biomolecule, to produce high yields of a bioconjugated product. A metal ion may be chelated to the bioconjugated product to produce a chelating agent for use in either diagnostic or therapeutic applications.