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- W4360992783 abstract "Fibroblast activation protein (FAP) is a potential target for tumor diagnosis and treatment due to its selective expression on cancer-associated fibroblasts (CAFs) in most solid tumor stroma. Two FAP inhibitor (FAPI) derived ligands (L1 and L2) containing different lengths of DPro-Gly (PG) repeat units as linkers were designed and synthesized with high affinity for FAP. Two stable hydrophilic 99mTc-labeled complexes ([99mTc]Tc-L1 and [99mTc]Tc-L2) were obtained. In vitro cellular studies show that the uptake mechanism is correlated with FAP uptake, and [99mTc]Tc-L1 shows a higher cell uptake and specific binding to FAP. A nanomolar Kd value for [99mTc]Tc-L1 indicates its significantly high target affinity for FAP. The biodistribution and microSPECT/CT images obtained for U87MG tumor mice show that [99mTc]Tc-L1 has high tumor uptake with specificity to FAP and high tumor-to-nontarget ratios. As an inexpensive, easily made, and widely available tracer, [99mTc]Tc-L1 holds great promise for clinical applications." @default.
- W4360992783 created "2023-03-30" @default.
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- W4360992783 date "2023-03-27" @default.
- W4360992783 modified "2023-10-16" @default.
- W4360992783 title "Synthesis and Evaluation of <sup>99m</sup>Tc-Labeled FAP Inhibitors with Different Linkers for Imaging of Fibroblast Activation Proteins in Tumors" @default.
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- W4360992783 doi "https://doi.org/10.1021/acs.jmedchem.2c02062" @default.
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