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Molecular PET/CT mapping of rhACE2 distribution and quantification in organs to aid in SARS-CoV-2 targeted therapy

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机构: [1]Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Southwest Medical University, Luzhou, Sichuan, China. [2]State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Beijing Key Laboratory of Carcinogenesis and Translational Research, NMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), Department of Nuclear Medicine, Peking University Cancer Hospital & Institute, Beijing, China. [3]Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, China. [4]Department of Nuclear Medicine, First Affiliated Hospital of Hebei North University, Zhangjiakou, China. [5]Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Central Laboratory, Peking University Cancer Hospital & Institute, Beijing, China. [6]Department of Biomedical Engineering, Peking University Shenzhen Graduate School, Shenzhen, Guangdong, China. [7]International Cancer Center, Department of medicine, Shenzhen University, Shenzhen, Guangdong, China.
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关键词: 68Ga‐HZ20 PET imaging rhACE2‐organ model SARS‐CoV‐2

摘要:
Coronavirus disease 2019 (COVID-19), which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, poses a significant threat to public health. Angiotensin-converting enzyme 2 (ACE2) is a key receptor for SARS-CoV-2 infection. Recombinant human ACE2 (RhACE2), as a soluble supplement for human ACE2, can competitively block SARS-CoV-2 infection. In this study, a mouse organ in situ rhACE2 high aggregation model was constructed for the first time, and in vivo real-time positron emission tomography (PET) imaging of rhACE2 in the mouse model was performed using an ACE2-specific agent 68 Ga-HZ20. This radiotracer exhibits reliable radiochemical properties in vitro and maintains a high affinity for rhACE2 in vivo. In terms of probe uptake, 68 Ga-HZ20 showed a good target-to-nontarget ratio and was rapidly cleared from the circulatory system and excreted by the kidneys and urinary system. PET imaging with this radiotracer can noninvasively and accurately monitor the content and distribution of rhACE2 in the body, which clarifies that rhACE2 can aggregate in multiple organs, suggesting the preventive and therapeutic potential of rhACE2 for SARS-CoV-2 and COVID-19.© 2023 Wiley Periodicals LLC.

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出版当年[2023]版:
大类 | 3 区 医学
小类 | 3 区 病毒学
最新[2023]版:
大类 | 3 区 医学
小类 | 3 区 病毒学
第一作者:
第一作者机构: [1]Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Southwest Medical University, Luzhou, Sichuan, China. [2]State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Beijing Key Laboratory of Carcinogenesis and Translational Research, NMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), Department of Nuclear Medicine, Peking University Cancer Hospital & Institute, Beijing, China.
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通讯机构: [2]State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Beijing Key Laboratory of Carcinogenesis and Translational Research, NMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), Department of Nuclear Medicine, Peking University Cancer Hospital & Institute, Beijing, China. [6]Department of Biomedical Engineering, Peking University Shenzhen Graduate School, Shenzhen, Guangdong, China. [7]International Cancer Center, Department of medicine, Shenzhen University, Shenzhen, Guangdong, China.
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