Synthesis of diethylenetriaminepentaacetic acid conjugated inulin and utility for cellular uptake of liposomes
作者:Herbert Essien、J. Y. Lai、Karl J. Hwang
DOI:10.1021/jm00400a002
日期:1988.5
The synthesis, binding of radioactive cations, liposomal encapsulation, and biodistribution of the oxidized-inulin reaction product with ethylenediamine and diethylenetriaminepentaacetic acid (4) are described. The four-step synthesis of the inulin derivative proceeded in a good overall yield of 72%. The complex of the inulin derivative with either 67Ga3+ or 111In3+ was stable in vivo and did not readily
Neogalactosylated and neolactosylated albumins are currently used as radiopharmaceutical agents for imaging the liver asialoglycoprotein receptors, which allows the quantification of hepatic liver function in various diseases and also in healthy liver transplant donors. We developed an original process for synthesizing a chelating neolactosylated human albumin using maleimidopropyl-lactose and maleimidopropyl-diethylene triamine pentaacetic acid (DTPA) derivatives. The lactosylated protein (LACTAL) conjugate showed excellent liver uptake compared to nonlactosylated protein and a very high signal-to-noise ratio, based on functional assessment of biodistribution in mice using Tc-99m-scintigraphy.
TARGETED CONTRAST AGENTS AND USES THEREOF
申请人:Zhang Jidong
公开号:US20140065075A1
公开(公告)日:2014-03-06
Described herein is a contrast agent for administration to a subject. The contrast agent includes a targeting portion that includes an unchelated aminocarboxylate functional group; a metal ion bound to a metal-complexable portion; and a linker joining the targeting portion and the metal-complexable portion of the contrast agent. The portion that is not bound to a metal ion is for binding to necrotic tissue in the subject.
Functionalized diethylenetriaminetetraacetic acid-based metal chelates for chemical modification of proteins and small biomolecules
作者:O. S. Kuprienko、L. V. Dubovskaya、P. S. Shabunya、S. A. Fatykhava、O. V. Sviridov
DOI:10.1134/s1068162015060072
日期:2015.11
di-N-succinimide ester. It was used for modification of amino groups of lysine residues in polypeptide chains of human serum albumin and some immunoglobulins G. Purification of Eu3+ complexonate-protein conjugates by gel-chromatography on a Superose- 12 column allowed to separate the modified proteins from unreacted low molecular weight Eu(3+)-derivatives and to determine a degree of lanthanide inclusion