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Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging
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Multi-targeted ChEI-copper chelating molecules as neuroprotective agents.
Simona Sestito1, Shengnan Wang2, Qiuhe Chen2
1Department of Pharmacy, University of Pisa, Via Bonanno, 6, 56126, Pisa, Italy.
European Journal of Medicinal Chemistry
|May 3, 2019
Summary
Researchers developed novel multi-target-directed ligands (MTDLs) for Alzheimer's disease (AD) therapy. Compound 4 effectively inhibited cholinesterase, scavenged reactive oxygen species, and chelated copper, showing neuroprotective effects.
Area of Science:
- Neuroscience
- Medicinal Chemistry
- Pharmacology
Background:
- Alzheimer's disease (AD) presents a significant unmet medical need, with current treatments offering only symptomatic relief and limited efficacy.
- Multi-target-directed ligands (MTDLs) represent a promising strategy for developing innovative therapies against the complex, multifactorial nature of AD.
- The rivastigmine scaffold, a known cholinesterase inhibitor, serves as a basis for designing novel therapeutic agents.
Purpose of the Study:
- To design, synthesize, and evaluate a new series of MTDLs for potential Alzheimer's disease (AD) treatment.
- To investigate the cholinesterase inhibitory activity, reactive oxygen species (ROS) scavenging capacity, and cytotoxicity of novel hybrid compounds.
- To assess the copper-chelating properties and neuroprotective effects of the most promising derivative.
Main Methods:
- Synthesis of novel MTDLs incorporating the rivastigmine skeleton and metal-chelating moieties with varying linker lengths.
- In vitro assessment of acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) inhibitory activity.
- Evaluation of ROS scavenging activity, cytotoxicity, copper-chelating ability, and neuroprotective effects of lead compounds.
Main Results:
- Several novel MTDLs were synthesized and evaluated for their biological activities.
- Compound 4 demonstrated significant inhibition of both AChE and BuChE.
- Compound 4 exhibited copper-chelating properties and provided neuroprotection, alongside ROS scavenging activity.
Conclusions:
- The synthesized hybrid derivative 4 shows potential as a hit molecule for developing new multi-target-directed ligands for Alzheimer's disease.
- The MTDL approach, combining cholinesterase inhibition and metal chelation, offers a viable strategy for AD drug discovery.
- Further investigation of compound 4 is warranted for its potential therapeutic application in Alzheimer's disease treatment.
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