Visualization of Receptor-Interacting Protein Kinase 1 (RIPK1) by Brain Imaging with Positron Emission Tomography.

Visualization of Receptor-Interacting Protein Kinase 1 (RIPK1) by Brain Imaging with Positron Emission Tomography.
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DOI:
10.1021/acs.jmedchem.1c01477
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发表时间:
2021-10-28
影响因子:
7.3
通讯作者:
Wang C
Wang C
中科院分区:
医学1区
文献类型:
--
作者:
Lan Y;Bai P;Liu Y;Afshar S;Striar R;Rattray AK;Meyer TN;Langan AG;Posner AM;Shen S;Tanzi RE;Zhang C;Wang C

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We report the development of the first positron emission tomography (PET) radiotracer, [18F]CNY-07, based on a highly specific and potent RIPK1 inhibitor, Nec-1s, for RIPK1/necroptosis brain imaging in rodents. [18F]CNY-07 was synthesized through copper-mediated 18F-radiolabeling from an aryl boronic ester precursor and studied in vivo PET imaging in rodents. PET imaging results showed that [18F]CNY-07 can penetrate the blood–brain barrier with a maximum percent injected dose per unit volume of 3 at 10 min postinjection in the brain in vivo. Self-blocking studies of [18F]CNY-07 by pretreating with unlabeled molecules in rodents showed reduced radioactivity in animal brains (30% radioactivity decreased), indicating the binding specificity of our radiotracer. Our studies demonstrate that [18F]CNY-07 has provided a useful PET radioligand enabling brain RIPK1 imaging, which could be a valuable research tool in studying RIPK1-related neurological disorders in animals and potentially humans.
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