典型文献
A novel peptide-based probe 99mTc-PEG6-RD-PDP2 for the molecular imaging of tumor PD-L2 expression
文献摘要：
Tumor-related PD-L2 expression is associated with the clinical efficacy of PD-1/PD-L1 blockade therapy.PD-L2-specific imaging can help selecting patients for appropriate immunotherapy.In this study,a PD-L2-targeting peptide(PDP2)was screened by the one-bead one-compound combinatorial library approach.Using the retro-inverso D-peptide of PDP2(RD-PDP2)and PEGylation strategies,we developed a novel Tc-99m-labeled PD-L2-targeting peptide as a SPECT tracer(99mTc-PEG6-RD-PDP2)for imaging of tumor PD-L2 expression.The radiolabeling yield of 99mTc-PEG6-RD-PDP2 was greater than 95％by the stan-dard HYNIC/tricine/TPPTS labeling procedure.99mTc-PEG6-RD-PDP2 displayed high PD-L2-binding speci-ficity both in vitro and in vivo.SPECT/CT imaging with 99mTc-PEG6-RD-PDP2 showed that the A549-PD-L2 tumors were clearly visualized,whereas the signals in PD-L2-negative A549 tumors were much lower.In vivo blocking study suggested that the tumor uptake of 99mTc-PEG6-RD-PDP2 was PD-L2 specifically mediated.99mTc-PEG6-RD-PDP2 is a promising SPECT probe for the non-invasive imaging of tumor PD-L2 expression and has a great potential in guiding the anti-PD-1 or anti-PD-L1 immunotherapy of cancer.
文献关键词：
中图分类号：
作者姓名：
Qi Luo;Yunwei Zhang;Zihua Wang;Yining Sun;Linqing Shi;Yue Yu;Jiyun Shi;Zhiyuan Hu;Fan Wang
作者机构：
Guangzhou Laboratory,Guangzhou 510005,China;Medical Isotopes Research Center and Department of Radiation Medicine,State Key Laboratory of Natural and Biomimetic Drugs,School of Basic Medical Sciences,Peking University,Beijing 100191,China;Fujian Provincial Key Laboratory of Brain Aging and Neurodegenerative Diseases,School of Basic Medical Sciences,Fujian Medical University,Fuzhou 350122,China;Key Laboratory of Protein and Peptide Pharmaceuticals,CAS Center for Excellence in Biomacromolecules,Institute of Biophysics,Chinese Academy of Sciences,Beijing 100101,China;CAS Key Laboratory of Standardization and Measurement for Nanotechnology,CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety,CAS Center for Excellence in Nanoscience,National Center for Nanoscience and Technology of China,Beijing 100190,China
文献出处：
引用格式：
[1]Qi Luo;Yunwei Zhang;Zihua Wang;Yining Sun;Linqing Shi;Yue Yu;Jiyun Shi;Zhiyuan Hu;Fan Wang-.A novel peptide-based probe 99mTc-PEG6-RD-PDP2 for the molecular imaging of tumor PD-L2 expression)[J].中国化学快报（英文版）,2022(07):3497-3501
A类：
PEG6,PDP2,inverso,radiolabeling,tricine,TPPTS
B类：
novel,peptide,probe,99mTc,RD,molecular,imaging,L2,expression,Tumor,related,associated,clinical,efficacy,L1,blockade,help,selecting,patients,appropriate,immunotherapy,In,this,study,targeting,was,screened,by,one,bead,compound,combinatorial,library,approach,Using,retro,PEGylation,strategies,developed,labeled,SPECT,tracer,yield,greater,than,stan,dard,HYNIC,procedure,displayed,high,binding,ficity,both,vitro,vivo,showed,that,A549,tumors,were,clearly,visualized,whereas,signals,negative,much,lower,blocking,suggested,uptake,specifically,mediated,promising,invasive,has,potential,guiding,anti,cancer
AB值：
0.38387
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