4.2 Article

Potential Role of Colchicine in Combating COVID-19 Cytokine Storm and Its Ability to Inhibit Protease Enzyme of SARS-CoV-2 as Conferred by Molecular Docking Analysis

Journal

MEDICINA-LITHUANIA
Volume 58, Issue 1, Pages -

Publisher

MDPI
DOI: 10.3390/medicina58010020

Keywords

COVID-19; cytokine storm; colchicine; protease inhibitor; molecular docking; RNA polymerase; SARS-CoV-2

Funding

  1. Research Center for Advanced Materials Science (RCAMS)
  2. King Khalid University [RCAMS/KKU/019-20]
  3. [IFP-KKU-2020/10]

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Despite the progress in managing COVID-19, the global pandemic continues to pose a significant health crisis. This study suggests that colchicine could potentially ameliorate the destructive effects of the COVID-19 cytokine storm by inhibiting the protease enzyme of SARS-CoV-2, showing strong evidence of antiviral activity.
Despite the advance in the management of Coronavirus disease 2019 (COVID-19), the global pandemic is still ongoing with a massive health crisis. COVID-19 manifestations may range from mild symptoms to severe life threatening ones. The hallmark of the disease severity is related to the overproduction of pro-inflammatory cytokines manifested as a cytokine storm. Based on its anti-inflammatory activity through interfering with several pro and anti-inflammatory pathways, colchicine had been proposed to reduce the cytokine storm and subsequently improve clinical outcomes. Molecular docking analysis of colchicine against RNA-dependent RNA polymerase (RdRp) and protease enzymes of Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) revealed that colchicine provided a grid-based molecular docking method, C-DOCKER interaction energy 64.26 and 47.53 (Kcal/mol) with protease and RdRp, respectively. This finding indicated higher binding stability for colchicine-protease complexes than the colchicine-RdRp complex with the involvement of seven hydrogen bonds, six hydrogen acceptors with Asn142, Gly143, Ser144, and Glu166 and one hydrogen-bond donors with Cys145 of the protease enzyme. This is in addition to three hydrophobic interactions with His172, Glu166, and Arg188. A good alignment with the reference compound, Boceprevir, indicated high probability of binding to the protease enzyme of SARS-CoV-2. In conclusion, colchicine can ameliorate the destructive effect of the COVID-19 cytokine storm with a strong evidence of antiviral activity by inhibiting the protease enzyme of SARS-CoV-2.

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