| Literature DB >> 30938983 |
Zheng Han1,2, Shuixing Zhang1,3, Kenji Fujiwara4, Jia Zhang1, Yuguo Li1,2, Jing Liu1,5, Peter C M van Zijl1,2, Zheng-Rong Lu6, Lei Zheng4, Guanshu Liu1,2.
Abstract
A dextran-peptide conjugate was developed for magnetic resonance (MR) molecular imaging of pancreatic ductal adenocarcinoma (PDAC) through its overexpressed microenvironment biomarker, extradomain-B fibronectin (EDB-FN). This new agent consists of diamagnetic and biocompatible dextran and a targeting peptide. Dextrans can be directly detected by chemical exchange saturation transfer magnetic resonance imaging (CEST MRI) without the need for radionuclide or metallic labeling. In addition, large molecular weight dextran, dextran 10 (MW ∼ 10 kDa), provides an approximately 50 times higher sensitivity per molecule than a single glucose unit. The potential of this highly biocompatible diamagnetic probe is demonstrated in a murine syngeneic allograft PDAC tumor model. The biocompatibility and sensitivity of this new agent clearly show potential for a path to clinical translation.Entities:
Mesh:
Substances:
Year: 2019 PMID: 30938983 PMCID: PMC6896991 DOI: 10.1021/acs.bioconjchem.9b00161
Source DB: PubMed Journal: Bioconjug Chem ISSN: 1043-1802 Impact factor: 4.774