“Turn-On” Quinoline-Based Fluorescent Probe for Selective Imaging of Tau Aggregates in Alzheimer’s Disease: Rational Design, Synthesis, and Molecular Docking

ACS Sensors ◽  
2021 ◽  
Author(s):  
Ahmed A. Elbatrawy ◽  
Seung Jae Hyeon ◽  
Nan Yue ◽  
Essam Eldin A. Osman ◽  
Seung Hyeo Choi ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Molecular Docking ◽  
Fluorescent Probe ◽  
Rational Design ◽  
Design Synthesis ◽  
Turn On

scholarly journals Anti-Aggregation Property of Allicin by In Vitro and Molecular Docking Studies

2019 ◽  
Vol 13 ◽  
pp. 117906951986618 ◽  
Author(s):  
Suresh Kumar ◽  
Shivani Kumar ◽  
Heera Ram
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Molecular Docking ◽  
Molecular Interaction ◽  
Fibril Formation ◽  
Amyloid Peptide ◽  
Peptide Aggregation ◽  
Aβ Peptide ◽  
In Silico Studies

Amyloidogenesis is the process in which amyloid beta (Aβ) peptide aggregation results in plaque formation in central nervous system (CNS) are associated with many neurological diseases such as Alzheimer’s disease. The peptide aggregation initiated from peptide monomers results in formation of dimers, tetramers, fibrils, and protofibrils. The ability of allicin, a lipid-soluble volatile organosulfur biological compound, present in freshly crushed garlic ( Allium sativum L.) to inhibit fibril formation by the Aβ peptide in vitro was investigated in the present study. Inhibition of fibrillogenesis was measured by a Thioflavin T (ThT) fluorescence assay and visualized by transmission electron microscopy (TEM). The molecular interaction between allicin and Aβ peptide was also demonstrated by in silico studies. The results show that allicin strongly inhibited Aβ fibrils by 97% at 300 µM, compared with control (Aβ only) ( P < .001). These results were further validated by visual of fibril formation by transmission microscopy and molecular interaction of amyloid peptide with allicin by molecular docking. Aβ forms favourable hydrophobic interaction with Ile32, Met35, Val36, and Val39, and oxygen of allicin forms hydrogen bond with the amino acid residue Lys28. Allicin anti-amyloidogenic property suggests that this naturally occurring compound may have potential to ameliorate and prevent Alzheimer’s disease.

scholarly journals Design, synthesis, structure, toxicology and in vitro testing of three novel agents for Alzheimer’s disease

RSC Advances ◽  
2017 ◽  
Vol 7 (38) ◽  
pp. 23457-23467 ◽  
Author(s):  
José Daniel Figueroa-Villar
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Novel Agents ◽  
In Vitro Testing ◽  
Design Synthesis

This article describes the synthesis of three novel compounds for the treatment of Alzheimer’s disease (AD).

scholarly journals MOLECULAR DOCKING STUDIES ON THE THERAPEUTIC TARGETS OF ALZHEIMER'S DISEASE (AChE AND BChE) USING NATURAL BIOACTIVE ALKALOIDS

2016 ◽  
Vol 8 (12) ◽  
pp. 108
Author(s):  
Punabaka Jyothi ◽  
Kuna Yellamma
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Molecular Docking ◽  
Binding Affinity ◽  
Neurodegenerative Disorder ◽  
Biological Activities ◽  
Neuropsychiatric Symptoms ◽  
Docking Studies ◽  
Kcal Mole ◽  
Molecular Docking Studies

Objective: Alzheimer’s disease (AD), a progressive neurodegenerative disorder with many cognitive and neuropsychiatric symptoms, is biochemically characterized by a significant decrease in the brain neurotransmitter Acetylcholine (ACh).Methods: In the present insilico study, six plant bioactive compounds namely Harmol, Vasicine, Harmaline, Harmine, Harmane and Harmalol (from P. Nigellastrum Bunge) were analyzed for their inhibitory role on AChE (Acetylcholinesterase) and BChE (Butyrylcholinesterase) activity by applying the molecular docking studies. Other parameters viz. determination of molecular interaction-based binding affinity values, protein-ligand interactions, Lipinski rule of five, functional properties and biological activities for the above compounds were also calculated by employing the appropriate bioinformatics tools.Results: The results of docking analysis clearly showed that Harmalol has highest binding affinity with AChE (-8.6 kcal/mole) and BChE (-8.0 kcal/mole) but it does not qualified the enzyme inhibitory activity, since it was exerted, and also has least percentage activity on AD and neurodegenerative disease. Whereas, the Harmine has been second qualified binding affinity (-8.4 kcal/mol) and first in other parameters when compared with Harmalol.Conclusion: Based on docking results and other parameters conducted, we are concluding that Harmine is the best compound for further studies to treat AD.Keywords: Alzheimer's disease (AD), Acetylcholinesterase, Butyrylcholinesterase, Lead Molecules

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