South Korean scientists finds THC stop SARS-CoV-2 replication and cytokine storm

Cannabis literally disabled SARS-CoV-2 virus

International Journal of Biological Macromolecules, a peer-reviewed scientific journal, published a paper from South Korean scientists showing cannabinoids including THC can neutralize the main protease of SARS-CoV-2 to block replication and control cytokine storm, suggesting cannabinoids could stop COVID19 pandemic.

Vinit Raj, Jae Gyu Park, Kiu-Hyung Cho, Pilju Choi, Taejung Kim, Jungyeob Ham, Jintae Lee, Assessment of antiviral potencies of cannabinoids against SARS-CoV-2 using computational and in vitro approaches, International Journal of Biological Macromolecules, Volume 168, 2021, Pages 474-485, ISSN 0141-8130,

Researchers from South Korea noticed cannabinoids including THC are well known antiviral agent, so they conducted computer simulations and laboratory experiments with SARS-CoV-2 virus.

(A) Cannabinoids including THC and CBD attached to the main protease of the SARS-CoV-2 virus, and disabling the proliferation function.

(B) Cannabinoids including THC and CBD attached to the receptors in the cell and regulated the immune response to stop cytokine storm.

Mechanism of cannabinoids blocking SARS-CoV-2, cytokine storm

Disabling SARS-CoV-2 virus

Through out the pandemic, many scientists came up with a solution to cope with such as vaccines, antiviral medication and more. While it is well known about such solutions, China and Germany team came out with a novel idea to inhibit the SARS-CoV-2 virus itself to disable it.

For instance, China and Germany team came out with an inhibitor model α-ketoamide 13b suggesting it could bind into the main protease of SARS-CoV-2 and disable its proliferation.

Zhang L, Lin D, Sun X, Curth U, Drosten C, Sauerhering L, Becker S, Rox K, Hilgenfeld R. Crystal structure of SARS-CoV-2 main protease provides a basis for design of improved α-ketoamide inhibitors. Science. 2020 Apr 24;368(6489):409-412. doi: 10.1126/science.abb3405. Epub 2020 Mar 20. PMID: 32198291; PMCID: PMC7164518.

Interestingly, researchers from South Korea found that THC was better and effective than the inhibitor model α-ketoamide 13b suggested by the China and Germany team.

Computer simulations of molecular dynamics have shown that cannabinoid molecules in cannabis can stably adhere to and neutralize the COVID-19 virus

In addition, THC and CBD were significantly stronger or similar than the reference drugs for COVID19, Remdesivir, Chloroquine, and Lopinavir through the test of measuring the half-impact concentration (EC50 or IC50), which is the concentration value of the drug that eliminates 50% of the virus.

Comparison of cannabinoids and reference drugs for SARS-CoV-2 virus

Stopping Cytokine Storm

Most people who contact SARS-CoV-2 virus do not show COVID19 symptoms, which is severe cough, runny nose, breath difficulties. However SARS-CoV-2 virus could affect immunocompromised people.

SARS-CoV-2 virus could trigger an excessive inflammation reaction, which is almost like a sudden runny nose(cytokine storm), and cause acute respiratory distress syndrome(ARDS), which means suddenly hard to breathe.

Researchers found cannabinoids activates the receptors and dry up excessive fluid, the excessive immune responses, which is called as cytokine storm.

Mohammed, A., F K Alghetaa, H., Miranda, K., Wilson, K., P Singh, N., Cai, G., Putluri, N., Nagarkatti, P., & Nagarkatti, M. (2020). Δ9-Tetrahydrocannabinol Prevents Mortality from Acute Respiratory Distress Syndrome through the Induction of Apoptosis in Immune Cells, Leading to Cytokine Storm Suppression. International journal of molecular sciences, 21(17), 6244.

Scientists discovered THC treatment significantly suppressed the inflammatory cytokines, and led 100% survival of mice induced acute respiratory distress syndrome(ARDS).

Cannabis and its therapeutic value

Cannabis, known only as a hallucinogen or drug, is undergoing significant changes in its status, such as being recognized for its medical effects in the United Nations.

That means that international treatments such as anti-cancer drugs have been recognized.

Unfortunately, People’s Republic of China voted ‘no’ in this vote, however, I believe Hong Kong Special Administrative Region (HK SAR) can have a different perspective of medical cannabis.

As my sponsor Daily HongKong pointed outPeople’s Republic of China can show the world that she is keeping up her promise of ‘One Country Two System’ by acknowledging different perspective of medical use of cannabis and legalize it in a aging society Hong Kong.

I hope in 2021, people could acknowledge the medical effects of the marijuana THC, including the anti-cancer effect, and proceed with legalization and non-criminalization.

Please forward this news to your friends, and I wish we could be free from masks in 2021!


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s