Journal Article

DZNE-2020-03340

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Fluorescent rhodanine-3-acetic acids visualize neurofibrillary tangles in Alzheimer's disease brains.

Anumala, U. R. ; Gu, J. ; Lo Monte, F. ; Kramer, T. ; Heyny-von Haußen, R. ; Hölzer, J. ; Goetschy-Meyer, V. ; Schön, C.DZNE* ; Mall, G. ; Hilger, I. ; Czech, C. ; Herms, J.DZNE* ; Schmidt, B. (Corresponding author)

2013
Elsevier Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.bmc.2013.06.039

Abstract: There is a high demand for the development of an imaging agent for neurofibrillary tangles (NFTs) detection in Alzheimer's diagnosis. In the present study, a series of rhodanine-3-acetic acids was synthesized and evaluated for fluorescence imaging of NFTs in brain tissues of AD patients. Five out of seven probes have shown excellent binding affinity to NFTs over amyloid plaques in the Thiazine red R displacement assay. However, the selectivity in this in vitro assay is not confirmed by the histopathological evaluation, which indicates significant differences in the binding sites in the assays. Probe 6 showed binding affinity (IC50=19nM) to tau aggregates which is the highest among this series. Probes 2, 3, 4 and 5 display IC50 values of lower than 100nM to tau aggregates to displace Thiazine red R. Evaluation of the cytotoxicity of these five probes with human liver carcinoma cells revealed that these compounds excert negligible cytotoxicity. The in vivo studies with zebrafish embryos confirmed negligible cytotoxicity at 24 and 72h post fertilization.

Keyword(s): Acetates: chemical synthesis (MeSH) ; Acetates: chemistry (MeSH) ; Acetates: toxicity (MeSH) ; Alzheimer Disease: metabolism (MeSH) ; Alzheimer Disease: pathology (MeSH) ; Amyloid beta-Peptides: chemistry (MeSH) ; Amyloid beta-Peptides: metabolism (MeSH) ; Animals (MeSH) ; Brain: metabolism (MeSH) ; Brain: pathology (MeSH) ; Cell Line, Tumor (MeSH) ; Cell Survival: drug effects (MeSH) ; Embryo, Nonmammalian: drug effects (MeSH) ; Fluorescent Dyes: chemical synthesis (MeSH) ; Fluorescent Dyes: chemistry (MeSH) ; Fluorescent Dyes: toxicity (MeSH) ; Humans (MeSH) ; Microscopy, Fluorescence (MeSH) ; Peptide Fragments: chemistry (MeSH) ; Peptide Fragments: metabolism (MeSH) ; Rhodanine: chemistry (MeSH) ; Zebrafish: growth & development (MeSH) ; tau Proteins: chemistry (MeSH) ; tau Proteins: metabolism (MeSH) ; Acetates ; Amyloid beta-Peptides ; Fluorescent Dyes ; MAPT protein, human ; Peptide Fragments ; amyloid beta-protein (1-40) ; amyloid beta-protein (1-42) ; tau Proteins ; Rhodanine

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Contributing Institute(s):

1. Translational Brain Research (AG Herms)

Research Program(s):

1. 342 - Disease Mechanisms and Model Systems (POF3-342) (POF3-342)

Appears in the scientific report 2013

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Database coverage:
; BIOSIS Previews ; Clarivate Analytics Master Journal List ; Current Contents - Life Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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