Potential of Artemisia annua Bioactives as Antiviral Agents Against SARS-CoV-2 and Other Health Complications
et al., Pharmaceuticals, doi:10.3390/ph18121904, Dec 2025
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Review of the potential of Artemisia annua bioactive compounds as antiviral agents against SARS-CoV-2. Authors highlight that artemisinin and its derivatives demonstrate strong binding to the Lys353 and Lys31 hotspots of the SARS-CoV-2 spike protein in in silico studies, and that in vitro treatment with A. annua extract, artemisinin, artemether, and artesunate significantly reduced SARS-CoV-2 infection in Vero E6, A549-hACE2, and Huh7.5 cells. Hot aqueous extracts of five A. annua cultivars showed potent activity against COVID-19 variants including alpha, beta, gamma, delta, and kappa, with IC50 values ranging from 0.3 to 8.4 µM. A clinical trial of artemisinin-piperaquine significantly shortened time to viral clearance compared to controls. Proposed mechanisms include inhibition of spike protein binding to host cells, suppression of NFκB signaling, and reduction of cytokine storm by inhibiting IKK.
1.
Shaer et al., Potential of Artemisia annua Bioactives as Antiviral Agents Against SARS-CoV-2 and Other Health Complications, Pharmaceuticals, doi:10.3390/ph18121904.
Shaer et al., 17 Dec 2025, multiple countries, peer-reviewed, 3 authors.
Contact: aaaydeyaa@uqu.edu.sa (corresponding author), nashaer@uqu.edu.sa, e.schnug@tu-bs.de.
Abstract:
Review
Potential of Artemisia annua Bioactives as Antiviral Agents Against SARS-CoV-2 and Other Health Complications
Academic Editor: Michele Tonelli
Received: 3 December 2025
Revised: 13 December 2025
Accepted: 14 December 2025
Published: 17 December 2025
Citation: Shaer, N.A.; Mohamed, A.A.; Schnug, E. Potential of Artemisia annua Bioactives as Antiviral Agents Against SARS-CoV-2 and Other Health Complications. Pharmaceuticals 2025 , 18 , 1904. https://doi.org/ 10.3390/ph18121904
Correction Statement: This article has been republished with a minor change. Thechangedoesnotaffect the scientific content of the article and further details are available within the backmatter of the website version of this article.
Copyright: ©2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/ licenses/by/4.0/).
Nehad A. Shaer 1 , Amal A. Mohamed 2, *
and Ewald Schnug 3
- 1 Department of Biology, Jamoum University College, Umm Al-Qura University, Makkah 21955, Saudi Arabia; nashaer@uqu.edu.sa
- 2 Department of Chemistry, Al-Leith University College, Umm Al-Qura University, Makkah 21955, Saudi Arabia
- 3 Department of Plant Physiology and Biochemistry, Faculty of Life Sciences, Technical University of Braunschweig, D-38106 Braunschweig, Germany; e.schnug@tu-bs.de
* Correspondence: aaaydeyaa@uqu.edu.sa; Tel.: +966-177425771
Simple Summary
Extracts and bioactive compounds from Artemisia annua have demonstrated activity against SARS-CoV-2 in laboratory studies and cell-based assays. Compounds like artemisinin showed potential to inhibit key viral proteins like the main protease (Mpro), interfering with virus replication. Rutin and quercetin derivatives, present in Artemisia extracts, have antiviral effects against SARS-CoV-2 and other viruses. Beyond direct antiviral activity, Artemisia extracts exhibit immunomodulatory and anti-inflammatory effects, potentially reducing COVID-19-associated inflammation and oxidative stress.
Abstract
This review highlights Artemisia annua , a medicinal plant which grows in the Kingdom of Saudi Arabia, known for its abundant therapeutic properties. A. annua serves as a rich source of various bioactive compounds, including sesquiterpenoid lactones, flavonoids, phenolic acids, and coumarins. Among these, artemisinin and its derivatives are most extensively studied due to their potent antimalarial properties. Extracts and isolates of A. annua have demonstrated a range of therapeutic effects, such as antioxidant, anticancer, antiinflammatory, antimicrobial, antimalarial, and antiviral properties. Given its significant antiviral activity, A. annua could be investigated for the development of new nutraceutical bioactive compounds to combat SARS-CoV-2. Artificial Intelligence (AI) can assist in drug discovery by optimizing the selection of more effective and safer natural bioactives, including artemisinin. It can also predict potential clinical outcomes through in silico modeling of protein-ligand interactions. In silico studies have reported that artemisinin and its derivatives possess a strong ability to bind with the Lys353 and Lys31 hotspots of the SARS-CoV-2 spike protein, demonstrating their effective antiviral effects against COVID-19. This integrated approach may accelerate the identification of effective and safer natural antiviral agents..
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"abstract": "<jats:p>This review highlights Artemisia annua, a medicinal plant which grows in the Kingdom of Saudi Arabia, known for its abundant therapeutic properties. A. annua serves as a rich source of various bioactive compounds, including sesquiterpenoid lactones, flavonoids, phenolic acids, and coumarins. Among these, artemisinin and its derivatives are most extensively studied due to their potent antimalarial properties. Extracts and isolates of A. annua have demonstrated a range of therapeutic effects, such as antioxidant, anticancer, anti-inflammatory, antimicrobial, antimalarial, and antiviral properties. Given its significant antiviral activity, A. annua could be investigated for the development of new nutraceutical bioactive compounds to combat SARS-CoV-2. Artificial Intelligence (AI) can assist in drug discovery by optimizing the selection of more effective and safer natural bioactives, including artemisinin. It can also predict potential clinical outcomes through in silico modeling of protein–ligand interactions. In silico studies have reported that artemisinin and its derivatives possess a strong ability to bind with the Lys353 and Lys31 hotspots of the SARS-CoV-2 spike protein, demonstrating their effective antiviral effects against COVID-19. This integrated approach may accelerate the identification of effective and safer natural antiviral agents against COVID-19.</jats:p>",
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