MR-fluorescent dual-modality molecular probes anchored with LyP-1 for pancreatic cancer
10.13929/j.1003-3289.201704043
- VernacularTitle:胰腺癌LyP-1靶向性磁共振—荧光双模态分子探针实验
- Author:
Zhang SHI
1
;
Chang'en SONG
;
Ruifeng SHI
;
Jianping LU
;
Yonghui DENG
;
Tao JIANG
Author Information
1. 第二军医大学附属长海医院放射科
- Keywords:
Pancreatic neoplasms;
Molecular probe;
Dual modality;
Magnetic resonance imaging;
Fluorescent imaging
- From:Chinese Journal of Medical Imaging Technology
2017;33(10):1447-1452
- CountryChina
- Language:Chinese
-
Abstract:
Objective To construct the LyP-1 targeted MR fluorescence dual-modality molecular probe for pancreatic cancer,and to observe its features and MRI charicteristics.Methods The 50 nm MR-fluorescent dual-modality molecular probe with surface modified with cyclic nine-amino acid peptide LyP-1 (Cys-Gly-Asn-Lys-Arg-Thr-Arg-Gly Cys) was rationally designed.Whether the molecular probe could specifically recognize the pancreatic cancer cells were validated by the combination of fluorescent imaging and MR T2WI.Results The new MR-fluorescent dual-modality molecular probe anchored with LyP-1 could be used for the fluorescent imaging and MR T2WI of pancreatic cancer in mouse.And the molecular probe was demonstrated to be effective in conjugating with pancreatic cancer cells on fluorescent images and caused obvious MR signal reduction under T2 relaxometry in vitro.In vivo experiment,the molecular probe could be used for fluorescent labeling tumor tissue and detecting orthotopic pancreatic cancer in C57BL/6 mouse as MR contrast agent.Conclusion The LyP1 immobilized MR-fluorescent dual-modality molecular probe can actively target to mouse orthotopic xenograft of pancreatic cancer,which is hopeful to the application in early probing and diagnosis of pancreatic cancer by multimodal imaging.
