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• W2783144720 endingPage "618" @default.
• W2783144720 startingPage "609" @default.
• W2783144720 abstract "Vascular cell adhesion molecule-1 (VCAM-1) is a transmembrane glycoprotein closely related to tumorigenicity as well as tumor metastasis. It is also a well-known candidate for detecting tumors. LY2409881, an IKKβ inhibitor, could induce apoptosis of VCAM-1 positive cells. Our purpose is to prepare a novel tracer to evaluate its feasibility of detecting VCAM-1 expression and monitoring LY2409881 tumor curative effect. The tracer was prepared by conjugating the single chain variable fragment (scFv) of VCAM-1 and NOTA-NHS-ester and then labeled with 68Ga. 68Ga-NOTA-VCAM-1scFv was successfully prepared with high radiochemical yield. VCAM-1 overexpression and underexpression melanoma cell lines, B16F10 and A375m, were used in this study. The results of microPET/CT imaging in small animals indicated that the uptake of 68Ga-NOTA-VCAM-1scFv in B16F10 tumor was much higher than that of A375m, which was also confirmed by the biodistribution and autoradiography results. LY2409881 inhibits the growth of B16F10 melanoma in vivo by inducing dose- and time-dependent growth inhibition and apoptosis of the cells. The LY2409881 treated group and DMSO control group were established and imaged by microPET/CT. In the LY2409881 group, uptake of the tracer in tumor was decreased at the first week, and then gradually recovered to the initial level. In DMSO control, the uptake of the tracer remained at the same level during the whole time. The results suggested that LY2409881 inhibits the expression of VCAM-1 and suppresses tumor growth. 68Ga-NOTA-VCAM-1scFv, an easily synthesized probe, has a potential clinical application in the visual monitoring of IKKβ inhibitor intervention on VCAM-1 positive tumors." @default.
• W2783144720 created "2018-01-26" @default.
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• W2783144720 date "2018-01-24" @default.
• W2783144720 modified "2023-10-14" @default.
• W2783144720 title "PET Imaging of VCAM-1 Expression and Monitoring Therapy Response in Tumor with a ⁶⁸Ga-Labeled Single Chain Variable Fragment" @default.
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• W2783144720 doi "https://doi.org/10.1021/acs.molpharmaceut.7b00961" @default.
• W2783144720 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29308904" @default.
• W2783144720 hasPublicationYear "2018" @default.
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