Ahsana, Dina
Unknown Affiliation

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

Molecular Docking Study of Flavonoid Compounds in The Guava Leaves (Psidium Guajava L) Which Has Potential as Anti-Inflammatory COX-2 Inhibitors Ahsana, Dina; Andika, Andika; Nashihah, Siti
Lumbung Farmasi: Jurnal Ilmu Kefarmasian Vol 2, No 2 (2021): JULI
Publisher : UNIVERSITAS MUHAMMADIYAH MATARAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/lf.v2i2.4704

Abstract

ABSTRAKInflamasi yang bersifat progresif cenderung akan merusak dan menimbulkan beberapa permasalahan dalam tubuh. Enzim COX-2 merupakan salah satu mediator yang berkontribusi besar dalam terjadinya inflamasi progresif. Penelitian secara eksperimental daun jambu biji (Psidium guajava L.) terbukti memiliki aktivitas anti-inflamasi diduga karena banyak terkandung senyawa flavonoid, namun masih belum ada penelitian aktivitasnya terhadap penghambatan COX-2 selektif. Tujuan dari penelitian ini yaitu untuk mengetahui potensi senyawa flavonoid memiliki aktivitas anti-inflamasi penghambat COX-2 selektif menggunakan uji penambatan molekul. Metode: 31 senyawa flavonoid daun jambu biji didapat dari studi literatur beberapa penelitian in-vitro dan kode protein ID: 6COX yang digunakan pada penelitian penambatan molekular ini dilakukan energi minimisasi terlebih dahulu. Selanjutnya digunakan software docking Autodock4 dengan metode semi-flexible dan Lamarckian Genetic Algorithm (LGA). Semua senyawa flavonoid juga dilakukan prediksi Absorpsi, Distribusi, Metabolisme, Ekskresi, Toksisitas (ADMET). Hasil: secara keseluruhan diperoleh semua 31 senyawa uji flavonoid daun jambu biji berpotensi sebagai inhibitor COX-2 dan beberapa senyawa uji diantaranya memiliki nilai docking ∆G terbaik yang berasal dari Epicatechin-3-O-Gallate sebesar -9,31 kcal/mol, disusul oleh Gallocatechin sebesar -8,97 kcal/mol serta Tamarixetin -8,83 kcal/mol. Residu asam amino SER 353, TYR 385, SER 530, GLN 192 dan ARG 120 juga banyak berkontibusi dalam terbentuknya ikatan hidrogen. Kesimpulan: Epicatechin-3-O-Gallate merupakan senyawa uji yang memiliki potensi besar sebagai anti-inflamasi inhibitor COX-2 selektif karena memiliki kekuatan dan kestabilan ikatan yang tinggi dengan energi docking terendah saat ditambatkan pada protein target. Kata kunci : Penambatan Molekuler; Autodock4; Psidium guajava L; Antiinflamasi Inhibitor ; COX-2; Flavonoid.ABSTRACTProgressive inflammation tends to damage and cause several problems in the body. The COX-2 enzyme is one of the mediators that have a significant contribution to progressive inflammation. Experimental study, guava leaves (Psidium guajava L.), have anti-inflammatory activity, presumably because they contain many flavonoid compounds. However, the lack of those research on their action against selective COX-2 inhibition. The purpose of this study is to determine the potential for flavonoid compounds to have anti-inflammatory activity of selective COX-2 inhibitors using molecular docking. Method: 31 flavonoids compound of guava leaves found on some literature studies of a systematic literature review and protein code ID: 6COX used on this molecular docking study by applying minimization energy at first. Next, using Autodock4 docking software with semi-flexible and Lamarckian Genetic Algorithm (LGA) methods. All flavonoid compounds also used screening Absorption, Distribution, Metabolism, Excretion, Toxicity (ADMET) prediction. Results: Overall results obtained that all 31 compounds of guava leaf flavonoids can potentially be COX-2 inhibitors. One of them has the best docking value with ∆G from Epicatechin-3-O-Gallate of -9.31 kcal/mol is high than the Gallocatechin of -8.97 kcal/mol and -8.83 kcal/mol Tamarixetin. The amino acid residues SER 353, TYR 385, SER 530, GLN 192, and ARG 120 contributed significantly to form hydrogen bonds. Conclusions: Epicatechin-3-O-Gallate has significant potential as an anti-inflammatory selective COX-2 inhibitor because it has high bond strength and stability with the lowest energy binding when attached to the target protein.Keywords : Molecular Docking; Autodock4; Psidium guajava L; Inhibitor Anti-inflammatory; COX-2; Flavonoids.
Discovery of SARS-CoV-2 RNA-dependent-RNA-polymerase (RdRp) Inhibitor from Sambiloto (Andrographis paniculata) Based on Molecular Docking and ADMET Prediction Approach Ahsana, Dina; Pratama, Rizki Rahmadi; Meily, Alfisyahriatunnida; Andika, Andika
Pharmaceutical Sciences and Research Vol. 9, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The rapid spread of the coronavirus disease 2019 (COVID-19) has led to the development of therapeutic inhibitor drug of SARS-CoV-2, which can inhibit the viral enzyme RNA-dependent-RNA-polymerase (RdRp), thereby preventing the replication, transcription, and synthesis of RNA virus in the host cells. Previous in-vitro studies revealed that Andrographis paniculata has the potential to inhibit the virus. Therefore, this study aims to isolate the specific compounds of Andrographis paniculata, which play a role in inhibiting SARS-CoV-2 RdRp using molecular docking. A total of 19 compounds were identified in previous literature studies, while remdesivir and favipiravir were used as the positive control. All compounds and proteins were applied to minimize and optimize energy. Furthermore, the docking method was carried out using Autodock 4.2.6 software with a specific grid box containing the active site of RdRp (ID: 6M71), and the Lamarckian Genetic Algorithm was used to determine the conformation. The best docking was screened on ADMET prediction and the binding energy was evaluated. There are 18 compounds of Andrographis paniculata including the top three, namely andrographolactone (∆G = -8.86 kcal/mol), andrographolide (∆G = -7.74 kcal/mol), and andrographidine-A (∆G = -7.68 kcal/mol), which showed the strongest binding affinity to the SARS-CoV-2 RdRp protein compared to other compounds and the positive control remdesivir (∆G = -5.73 kcal/mol) and favipiravir (∆G = -5.20 kcal/mol). Furthermore, active amino acids play a role in this interaction by forming strong hydrogen bonds, such as TYR 619, LYS 621, ASP 760, and ASP 623. Andrographolactone has the highest potential as SARS-CoV-2 RdRp inhibitor, hence, it can be used as a novel therapeutic candidate.