彭孝军

个人信息Personal Information

教授

博士生导师

硕士生导师

主要任职:中国化学会创始会士、常务理事,中国化工学会会士

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:化工学院

学科:应用化学. 精细化工. 化学生物学

办公地点:大连理工大学西部校区知顺楼F-202#  
http://peng-group.dlut.edu.cn/

联系方式:大连理工大学西部校区知顺楼F-202 辽宁省大连市高新区凌工路2号,大连116024 课题组网址:http://peng-group.dlut.edu.cn/ E-mail: pengxj@dlut.edu.cn

电子邮箱:pengxj@dlut.edu.cn

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An APN-activated NIR photosensitizer for cancer photodynamic therapy and fluorescence imaging

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论文类型:期刊论文

发表时间:2021-04-12

发表刊物:BIOMATERIALS

卷号:253

ISSN号:0142-9612

关键字:Aminopeptidase N; Enzyme-activated photosensitizer; PDT; NIR fluorescence imaging

摘要:Photodynamic therapy has been developed as a prospective cancer treatment in recent years. Nevertheless, conventional photosensitizers suffer from lacking recognition and specificity to tumors, which causing severe side effects to normal tissues, while the enzyme-activated photosensitizers are capable of solving these conundrums due to high selectivity towards tumors. APN (Aminopeptidase N, APN/CD13), a tumor marker, has become a crucial targeting substance owing to its highly expressed on the cell membrane surface in various tumors, which has become a key point in the research of anti-tumor drug and fluorescence probe. Based on it, herein an APN-activated near-infrared (NIR) photosensitizer (APN-CyI) for tumor imaging and photodynamic therapy has been firstly developed and successfully applied in vitro and in vivo. Studies showed that APN-CyI could be activated by APN in tumor cells, hydrolyzed to fluorescent CyI-OH, which specifically located in mitochondria in cancer cells and exhibited a high singlet oxygen yield under NIR irradiation, and efficiently induced cancer cell apoptosis. Dramatically, the in vivo assays on Balb/c mice showed that APN-CyI could achieve NIR fluorescence imaging (lambda(em) = 717 nm) for endogenous APN in tumors and possessed an efficient tumor suppression effect under NIR irradiation.