Molecular imaging of Alzheimer's disease-related gamma-secretase in mice and nonhuman primates.
Molecular imaging of Alzheimer's disease-related gamma-secretase in mice and nonhuman primates.
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DOI:
10.1084/jem.20182266
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发表时间:
2020-12-07
期刊:
影响因子:
--
通讯作者:
Zhang C
中科院分区:
文献类型:
--
作者:
Xu Y;Wang C;Wey HY;Liang Y;Chen Z;Choi SH;Ran C;Rynearson KD;Bernales DR;Koegel RE;Fiedler SA;Striar R;Wagner SL;Tanzi RE;Zhang C
Alzheimer’s disease–related γ-secretase is a prime drug target whose brain regional expression and distribution remain largely unknown. This study describes the development of a molecular imaging probe to reveal γ-secretase in rodents and macaques with translational potentials in humans. The pathogenesis of Alzheimer’s disease (AD) is primarily driven by brain accumulation of the amyloid-β-42 (Aβ42) peptide generated from the amyloid-β precursor protein (APP) via cleavages by β- and γ-secretase. γ-Secretase is a prime drug target for AD; however, its brain regional expression and distribution remain largely unknown. Here, we are aimed at developing molecular imaging tools for visualizing γ-secretase. We used our recently developed γ-secretase modulators (GSMs) and synthesized our GSM-based imaging agent, [11C]SGSM-15606. We subsequently performed molecular imaging in rodents, including AD transgenic animals, and macaques, which revealed that our probe displayed good brain uptake and selectivity, stable metabolism, and appropriate kinetics and distribution for imaging γ-secretase in the brain. Interestingly, rodents and macaques shared certain brain areas with high γ-secretase expression, suggesting a functional conservation of γ-secretase. Collectively, we have provided the first molecular brain imaging of γ-secretase, which may not only accelerate our drug discovery for AD but also advance our understanding of AD.
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DOI:
10.1007/s00259-014-2753-3
发表时间:
2014-07
影响因子:
9.1
作者:
Landau, S. M.;Thomas, B. A.;Thurfjell, L.;Schmidt, M.;Margolin, R.;Mintun, M.;Pontecorvo, M.;Baker, S. L.;Jagust, W. J.
通讯作者:
Jagust, W. J.
影响因子:
4
作者:
Gertsik, Natalya;Chau, De-Ming;Li, Yue-Ming
通讯作者:
Li, Yue-Ming
影响因子:
4.8
作者:
Iben, Lawrence G.;Olson, Richard E.;Toyn, Jeremy H.
通讯作者:
Toyn, Jeremy H.
影响因子:
11.2
作者:
Klunk, WE;Engler, H;Långström, B
通讯作者:
Långström, B
影响因子:
11
作者:
Brendel, M.;Jaworska, A.;Rominger, A.
通讯作者:
Rominger, A.