antcin a

antcin A is a steroid-like phytochemical isolated from the fruiting bodies of a precious edible mushroom Antrodia cinnamomea with strong anti-inflammatory and anti-tumor effects.

Antcin-B exhibits a high-affinity inhibition of 3CLPro, which is potentially significant in SARS-CoV-2 research [1].

Antcin K is a selective inhibitor that targets the PI3K/Akt, NF-κB, MEK1/2-ERK, p38, and AP-1 pathways. It enhances IL-10 expression, thereby suppressing pro-inflammatory cytokine production, blocking monocyte adhesion, reducing tissue damage, and promoting myogenesis. Antcin K exhibits significant anti-inflammatory, anti-damage, and tissue-protective activities. It is primarily studied in the context of inflammatory-related diseases such as periodontitis, rheumatoid arthritis, and skeletal muscle injury.

Antcin B is an inhibitor of SARS-CoV-2 3-chymotrypsin-like protease (3CL Pro). It interacts with several crucial amino acid residues of 3CL Pro, including Leu141, Asn142, Glu166, and His163, through hydrogen bonding, salt bridges, and hydrophobic interactions, thereby inhibiting its activity. This inhibition blocks the cleavage of viral polyproteins and suppresses the replication of the SARS-CoV-2 virus within host cells. Antcin B shows potential for research in the context of COVID-19.