In Vitro and In Silico Anti-Acetylcholinesterase Activity from <i>Macaranga tanarius</i> and <i>Syzygium jambos</i>

<i>Macaranga tanarius</i> (MT) and <i>Syzygium jambos</i> (SJ) are pharmacologically reported to have anti-oxidant, anti-inflammatory, and anti-diabetic effects, and can be neuroprotective agents. Our previous work revealed that MT and SJ exhibited 76.32% and 93.81% inhibitio...

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Main Authors: Mira Syahfriena Amir Rawa, Nurul Amira Nurul Azman, Suriani Mohamad, Toshihiko Nogawa, Habibah A. Wahab
Format: Article
Language:English
Published: MDPI AG 2022-04-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/27/9/2648
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author Mira Syahfriena Amir Rawa
Nurul Amira Nurul Azman
Suriani Mohamad
Toshihiko Nogawa
Habibah A. Wahab
author_facet Mira Syahfriena Amir Rawa
Nurul Amira Nurul Azman
Suriani Mohamad
Toshihiko Nogawa
Habibah A. Wahab
author_sort Mira Syahfriena Amir Rawa
collection DOAJ
description <i>Macaranga tanarius</i> (MT) and <i>Syzygium jambos</i> (SJ) are pharmacologically reported to have anti-oxidant, anti-inflammatory, and anti-diabetic effects, and can be neuroprotective agents. Our previous work revealed that MT and SJ exhibited 76.32% and 93.81% inhibition against acetylcholinesterase (AChE) at 50 μg/mL final concentration in their ethyl acetate and hexane fractions, respectively. This study was aimed to investigate the bioactive constituents of MT and SJ and their molecular mechanism toward AChE inhibition. Bioassay-guided isolation afforded prenylflavonoids <b>1</b>–<b>3</b> from MT and anacardic acid derivatives <b>4</b> and <b>5</b> from SJ that were confirmed by NMR and MS data. Compound <b>5</b> exerted the strongest anti-AChE potential (IC<sub>50</sub>: 0.54 μM), followed by <b>1</b>, <b>4</b>, <b>3</b>, and <b>2</b> (IC<sub>50</sub>: 1.0, 2.4, 6.8, and 33 μM, respectively). In silico molecular docking revealed <b>5</b> formed stronger molecular interactions including three H-bonds than its derivative <b>4</b> based on the saturation of their alkyl chains. The addition of a five carbon-prenyl chain in <b>1</b> increased the number of binding interactions, justifying its greater activity than derivatives <b>2</b> and <b>3</b>. This research reflects the first report of AChE inhibitors from these species, thereby adding pharmacological values to MT and SJ as potential remedies in neuroprotection.
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spelling doaj.art-ad81c5a2a1ff4ed391f5d1b716ffcc6b2023-11-23T08:47:33ZengMDPI AGMolecules1420-30492022-04-01279264810.3390/molecules27092648In Vitro and In Silico Anti-Acetylcholinesterase Activity from <i>Macaranga tanarius</i> and <i>Syzygium jambos</i>Mira Syahfriena Amir Rawa0Nurul Amira Nurul Azman1Suriani Mohamad2Toshihiko Nogawa3Habibah A. Wahab4Collaborative Laboratory for Herbal Standardization (CHEST), School of Pharmaceutical Sciences, Universiti Sains Malaysia, George Town 11800, Penang, MalaysiaUSM-RIKEN Interdisciplinary Collaboration for Advanced Sciences (URICAS), Universiti Sains Malaysia, George Town 11800, Penang, MalaysiaUSM-RIKEN Interdisciplinary Collaboration for Advanced Sciences (URICAS), Universiti Sains Malaysia, George Town 11800, Penang, MalaysiaChemical Biology Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako 351-0198, Saitama, JapanCollaborative Laboratory for Herbal Standardization (CHEST), School of Pharmaceutical Sciences, Universiti Sains Malaysia, George Town 11800, Penang, Malaysia<i>Macaranga tanarius</i> (MT) and <i>Syzygium jambos</i> (SJ) are pharmacologically reported to have anti-oxidant, anti-inflammatory, and anti-diabetic effects, and can be neuroprotective agents. Our previous work revealed that MT and SJ exhibited 76.32% and 93.81% inhibition against acetylcholinesterase (AChE) at 50 μg/mL final concentration in their ethyl acetate and hexane fractions, respectively. This study was aimed to investigate the bioactive constituents of MT and SJ and their molecular mechanism toward AChE inhibition. Bioassay-guided isolation afforded prenylflavonoids <b>1</b>–<b>3</b> from MT and anacardic acid derivatives <b>4</b> and <b>5</b> from SJ that were confirmed by NMR and MS data. Compound <b>5</b> exerted the strongest anti-AChE potential (IC<sub>50</sub>: 0.54 μM), followed by <b>1</b>, <b>4</b>, <b>3</b>, and <b>2</b> (IC<sub>50</sub>: 1.0, 2.4, 6.8, and 33 μM, respectively). In silico molecular docking revealed <b>5</b> formed stronger molecular interactions including three H-bonds than its derivative <b>4</b> based on the saturation of their alkyl chains. The addition of a five carbon-prenyl chain in <b>1</b> increased the number of binding interactions, justifying its greater activity than derivatives <b>2</b> and <b>3</b>. This research reflects the first report of AChE inhibitors from these species, thereby adding pharmacological values to MT and SJ as potential remedies in neuroprotection.https://www.mdpi.com/1420-3049/27/9/2648<i>Macaranga tanarius</i><i>Syzygium jambos</i>acetylcholinesterase inhibitorprenylflavonoidanacardic acidisolation
spellingShingle Mira Syahfriena Amir Rawa
Nurul Amira Nurul Azman
Suriani Mohamad
Toshihiko Nogawa
Habibah A. Wahab
In Vitro and In Silico Anti-Acetylcholinesterase Activity from <i>Macaranga tanarius</i> and <i>Syzygium jambos</i>
Molecules
<i>Macaranga tanarius</i>
<i>Syzygium jambos</i>
acetylcholinesterase inhibitor
prenylflavonoid
anacardic acid
isolation
title In Vitro and In Silico Anti-Acetylcholinesterase Activity from <i>Macaranga tanarius</i> and <i>Syzygium jambos</i>
title_full In Vitro and In Silico Anti-Acetylcholinesterase Activity from <i>Macaranga tanarius</i> and <i>Syzygium jambos</i>
title_fullStr In Vitro and In Silico Anti-Acetylcholinesterase Activity from <i>Macaranga tanarius</i> and <i>Syzygium jambos</i>
title_full_unstemmed In Vitro and In Silico Anti-Acetylcholinesterase Activity from <i>Macaranga tanarius</i> and <i>Syzygium jambos</i>
title_short In Vitro and In Silico Anti-Acetylcholinesterase Activity from <i>Macaranga tanarius</i> and <i>Syzygium jambos</i>
title_sort in vitro and in silico anti acetylcholinesterase activity from i macaranga tanarius i and i syzygium jambos i
topic <i>Macaranga tanarius</i>
<i>Syzygium jambos</i>
acetylcholinesterase inhibitor
prenylflavonoid
anacardic acid
isolation
url https://www.mdpi.com/1420-3049/27/9/2648
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