Tumor-targeted HPMA copolymer-(RGDfK)-(CHX-A''-DTPA) conjugates show increased kidney accumulation.
Tumor-targeted HPMA copolymer-(RGDfK)-(CHX-A''-DTPA) conjugates show increased kidney accumulation.
复制标题
DOI:
10.1016/j.jconrel.2008.07.014
复制
发表时间:
2008-12-18
影响因子:
10.8
通讯作者:
Ghandehari, Hamidreza
中科院分区:
文献类型:
--
作者:
Borgman, Mark P.;Coleman, Tomika;Kolhatkar, Rohit B.;Geyser-Stoops, Sandra;Line, Bruce R.;Ghandehari, Hamidreza
N-(2-hydroxypropyl) methacrylamide (HPMA) copolymer-RGDfK conjugates targeting the αvβ3 integrin have shown increased accumulation in solid tumors and promise for selective delivery of radiotherapeutics to sites of angiogenesis- or tumor-expressed αvβ3 integrin. An unresolved issue in targeting radiotherapeutics to solid tumors is toxicity to non-target organs. To reduce toxicity of radiolabeled conjugates, we have synthesized HPMA copolymer-RGDfK conjugates with varying molecular weight and charge content to help identify a polymeric structure that maximizes tumor accumulation while rapidly clearing from non-targeted organs. Endothelial cell binding studies showed that copolymer conjugates of approximately 43, 20 and 10 kD actively bind to the αvβ3 integrin. Scintigraphic images showed rapid clearance of indium-111 radiolabeled conjugates from the blood pool and high kidney accumulation within 1 h in tumor bearing mice. Biodistribution data confirms images with high accumulation in kidney (max 210% ID/g for 43 kD conjugate) and lower tumor accumulation (max 1.8% ID/g for 43kD conjugate). While actively binding to the αvβ3 integrin in vitro, HPMA copolymer-RGDfK conjugates with increased negative charge through increased CHX-A″-DTPA chelator content in the side chains causes increased kidney accumulation with a loss of tumor binding in vivo.
登录
查看更多内容
DOI:
10.1002/apmc.1978.050700110
发表时间:
1978-01-01
期刊:
ANGEWANDTE MAKROMOLEKULARE CHEMIE
影响因子:
--
作者:
STROHALM, J;KOPECEK, J
通讯作者:
KOPECEK, J
影响因子:
4.7
作者:
Wang, Dong;Miller, Scott C.;Kopecek, Jindrich
通讯作者:
Kopecek, Jindrich
影响因子:
8.8
作者:
通讯作者:
--
影响因子:
10.8
作者:
Mitra, A;Mulholland, J;Line, BR
通讯作者:
Line, BR
DOI:
10.1016/j.ijrobp.2006.03.066
发表时间:
2006-01-01
影响因子:
7
作者:
DeNardo, Sally J.;DeNardo, Gerald L.
通讯作者:
DeNardo, Gerald L.