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A hemicyanine derivative for near-infrared imaging of β-amyloid plaques in Alzheimer's disease.
- Source :
-
European Journal of Medicinal Chemistry . Oct2019, Vol. 179, p736-743. 8p. - Publication Year :
- 2019
-
Abstract
- The formation of amyloid- β (A β) plaques in the brain is one of the main pathological features of Alzheimer's disease (AD). The imaging probes, capable of detecting A β deposition, are important tools for early diagnosis of AD. In this article, we designed, synthesized and evaluated a cyanine-based near-infrared fluorescence (NIRF) probe ZT-1 for the detection of A β deposits in the brain. The probe had excellent fluorescent properties with an emission maximum above 720 nm upon binding to A β aggregates with affinity of 445.0 nM (K d). Furthermore, ZT-1 exhibited good biostability, photostability, and binding selectivity toward A β 1-42 aggregates by in vitro fluorescence staining experiments. In vivo NIRF imaging result also revealed that our probe could efficiently differentiate transgenic and wild-type mice. All these studies indicated that ZT-1 is a promising fluorescent probe for A β plaques in the AD brains. Image 1 • A probe ZT-1 for the detection of A β deposits in the brain was synthesized and evaluated. • ZT-1 exhibited good biostability, photostability, and binding selectivity toward A β 1-42 aggregates. • ZT-1 could efficiently differentiate transgenic and wild-type mice by in vivo NIRF imaging. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ALZHEIMER'S disease
*INFRARED imaging
*TRANSGENIC mice
*FLUORESCENT probes
Subjects
Details
- Language :
- English
- ISSN :
- 02235234
- Volume :
- 179
- Database :
- Academic Search Index
- Journal :
- European Journal of Medicinal Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 138342273
- Full Text :
- https://doi.org/10.1016/j.ejmech.2019.07.005