CHIKV Inhibitor

Harringtonine is a natural Cephalotaxus alkaloid that inhibits protein synthesis. Harringtonine has anti-chikungunya virus (CHIKV) activities with an EC₅₀ of 0.24 μM.

EIDD-1931 (Beta-d-N4-hydroxycytidine; NHC) is a novel nucleoside analog and behaves as a potent anti-virus agent. EIDD-1931 effectively inhibits the replication activity of venezuelan equine encephalitis virus (VEEV), Chikungunya virus (CHIKV) and hepatitis C virus (HCV).

Tat-beclin 1, a peptide derived from a region of the autophagy protein (beclin 1), is a potent inducer of autophagy and interacts with negative regulator of autophagy, GAPR-1 (GLIPR2). Tat-beclin 1 decreases the accumulation of polyglutamine expansion protein aggregates and the replication of several pathogens (including HIV-1) in vitro, and reduces mortality in mice infected with chikungunya (CHIKV) or West Nile virus (WNV).

Umifenovir hydrochloride is a potent, orally active broad-spectrum antiviral with activity against a number of enveloped and non-enveloped viruses. Umifenovir hydrochloride is used as an anti-influenza virus agent. Umifenovir hydrochloride could effectively inhibit the fusion of virus with host cells. Umifenovir hydrochloride is an efficient inhibitor of SARS-CoV-2 in vitro. Anti-inflammatory activity.

Umifenovir is a potent, orally active broad-spectrum antiviral agent with activity against a number of enveloped and non-enveloped viruses. Umifenovir is used as an anti-influenza virus agent. Umifenovir could effectively inhibit the fusion of virus with host cells. Umifenovir is an efficient inhibitor of SARS-CoV-2 in vitro. Umifenovir shows anti-inflammatory activity.

Caulerpin is an orally active natural product with anti-tumor, anti-viral, anti-oxidant, anti-fungal, anti-bacteria and analgesic activities. Caulerpin acts as an inhibitor of mitochondrial ETC complex I and acetylcholinesterase. Caulerpin blocks hypoxia-induced activation of HIF-1α protein, inhibits VEGF secretion and tumor angiogenesis under hypoxic conditions, reduces the expression of NLRP3 and the production of pro-inflammatory cytokines, and suppresses the load of Mycobacterium tuberculosis. Caulerpin can be used in studies related to breast cancer, prostate cancer, tuberculosis and viral infections.

2-Thiouridine is an orally active modified nucleobase. 2-Thiouridine stabilizes U:A base pairs and destabilizes U:G wobble base pairs. 2-Thiouridine significantly improves the efficiency and accuracy of nonenzymatic replication of mixed-sequence A/U-containing RNA templates. 2-Thiouridine exhibits antiviral activity against multiple positive-sense single-stranded RNA viruses (DENV2, ZIKV, YFV, JEV, WNV, CHIKV, human coronaviruses ( [HCoV]-229E, HCoV-OC43, SARS-CoV), and MERS-CoV).

NHC-triphosphate tetraammonium is an active phosphorylated intracellular metabolite of β-d-N4-Hydroxycytidine (NHC) (HY-125033) as a triphosphate form. NHC-triphosphate tetraammonium is a weak alternative substrate for the viral polymerase and can be incorporated into HCV replicon RNA.

RA-0002034 is a Chikungunya virus (CHIKV) nsP2 protease inhibitor with an IC₅₀ of 58 nM. RA-0002034 covalently modifies the catalytic cysteine in a site-specific manner.

Ethyl palmitate (Ethyl hexadecanoate) is a CHIKV virus inhibitor with an EC₅₀ value of 0.0068 μM. Ethyl palmitate can reduce levels of TNF-α, IL-6, and NF-κB in endotoxemic rats, showing anti-inflammatory activity.

4α-Phorbol 12,13-didecanoate (4αPDD) is a transient receptor potential vanilloid 4 (TRPV4) agonist. 4α-Phorbol 12,13-didecanoate can promote Ca²⁺ influx, induce ATP release and function as an osmoreceptor. 4α-Phorbol 12,13-didecanoate can inhibit water intake and increase maximal micturition pressure in rats. 4α-Phorbol 12,13-didecanoate can be used for the researches of inflammation and infection, such as chikungunya virus (CHIKV).

Amustaline (S-303) dihydrochloride, a nucleic acid-targeted alkylator, is an efficient pathogen inactivation agent for blood components containing red blood cells. Amustaline dihydrochloride has three components: an acridine anchor (an intercalator that targets nucleic acids non-covalently), an effector (a bis-alkylator group that reacts with nucleophiles), and a linker (a small flexible carbon chain containing a labile ester bond that hydrolyzes at neutral pH to yield non-reactive breakdown products).

NHC-triphosphate tetrasodium is an active phosphorylated intracellular metabolite of β-d-N4-Hydroxycytidine (NHC) (HY-125033) as a triphosphate form. NHC-triphosphate tetrasodium is a weak alternative substrate for the viral polymerase and can be incorporated into HCV replicon RNA.

CHIKV-IN-2 is a potent inhibitor against Chikungunya virus (CHIKV), with excellent cellular antiviral activity (EC₉₀=270 nM) and improved liver microsomal stability. CHIKV-IN-2 shows inhibitory activity against a cellular target Dihydroorotate Dehydrogenase (DHODH), which interacts with various viruses and regulate their replication via depleting intracellular pyrimidine pools.

CHIKV-IN-6 is a selective CHIKV inhibitor with no cytotoxicity to mammalian cells. CHIKV-IN-6 inhibits CHIKV replication and exhibits little to no activity against other Togaviridae family members. CHIKV-IN-6 can be used for the research of chikungunya virus infection.

NHC-diphosphate triammonium is an active phosphorylated intracellular metabolite of β-d-N4-Hydroxycytidine (NHC) (HY-125033) as a diphosphate form. NHC-diphosphate triammonium is a weak alternative substrate for the viral polymerase and can be incorporated into HCV replicon RNA.

Cletoquine (Desethylhydroxychloroquine) is a major active metabolite of Hydroxychloroquine. Cletoquine is produced in the liver by CYP2D6, CYP3A4, CYP3A5, and CYP2C8 isoenzymes. Cletoquine is also a Chloroquine derivative and has the ability to against the chikungunya virus (CHIKV). Cletoquine has antimalarial effects and has the potential for autoimmune diseases treatment.

NHC-diphosphate is an active phosphorylated intracellular metabolite of β-d-N4-Hydroxycytidine (NHC) (HY-125033) as a diphosphate form. NHC is a pyrimidine ribonucleoside and behaves as a potent anti-virus agent. NHC effectively inhibits the replication of venezuelan equine encephalitis virus (VEEV), Chikungunya virus (CHIKV) and hepatitis C virus (HCV).

NHC-triphosphate is an active phosphorylated intracellular metabolite of β-d-N4-Hydroxycytidine (NHC) (HY-125033) as a triphosphate form. NHC-triphosphate is a weak alternative substrate for the viral polymerase and can be incorporated into HCV replicon RNA.

Cletoquine oxalate (Desethylhydroxychloroquine oxalate) is a major active metabolite of Hydroxychloroquine. Cletoquine oxalate is produced in the liver by CYP2D6, CYP3A4, CYP3A5, and CYP2C8 isoenzymes. Cletoquine oxalate is also a Chloroquine derivative and has the ability to against the chikungunya virus (CHIKV). Cletoquine oxalate has antimalarial effects and has the potential for autoimmune diseases treatment.