Flavivirus Inhibitor

Emricasan (PF 03491390) is an orally active and irreversible pan-caspase inhibitor. Emricasan inhibits Zika virus (ZIKV)-induced increases in caspase-3 activity and protected human cortical neural progenitors.

ML-SA1, as a selective TRPML agonist, inhibits Dengue virus 2 (DENV2) and Zika virus (ZIKV) by promoting lysosomal acidification and protease activity. The IC₅₀ value of ML-SA1 against DENV2 RNA and ZIKV RNA is 8.3 μM and 52.99 μM, respectively. ML-SA1 induces autophagy. ML-SA1 can be used for the research of broad-spectrum antiviral.

Pyridostatin (RR82) hydrochloride is a G-quadruplex DNA stabilizing agent (K_d=490 nM) and can target DNA and RNA G4s in cells. Pyridostatin hydrochloride promotes growth arrest in human cancer cells by inducing replication- and transcription-dependent DNA damage. Pyridostatin hydrochloride targets the proto-oncogene Src. Pyridostatin hydrochloride reduced SRC protein levels and SRC-dependent cellular motility in human breast cancer cells.

Cephaeline ((-)-Cephaeline; NSC 32944) is a ferroptosis inducer, with broad-spectrum anticancer and antiviral activities. Cephaeline induces ferroptosis (Ferroptosis) by upregulating p53, inhibiting NRF2, activating ULK3, downregulating the expressions of SLC7A11 and GPX4 in a p53-dependent manner, reducing GSH and mitochondrial membrane potential, and increasing lipid peroxidation and iron accumulation. Cephaeline inhibits cancer cell proliferation, migration and tumor growth. Cephaeline inhibits Ebola virus (EBOV) VLP entry and infection, with IC₅₀ values of 3.27 μM and 22.18 μM respectively; it also inhibits Zika virus (ZIKV) NS5 RdRp activity (IC₅₀ = 976 nM), and binds to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RdRp and N protein, with K_d values of 8.9 μM and 53.8 μM respectively. Cephaeline can be used in studies related to breast cancer, lung cancer, COVID-19, EBOV and ZIKV infections.

Nanchangmycin, a polyether antibiotic produced by Streptomyces nanchangensis NS3226, inhibits gram-positive bacteria. Nanchangmycin is a broad spectrum antiviral active against Zika virus.

Cyclofenil is a selective estrogen receptor modulator and an ovulation-inducing agent. Cyclofenil shows an inhibitory effect on dengue virus replication in Vero cells with an EC₅₀ of 1.62 μM. Cyclofenil has anti-dengue-virus activity.

Mycophenolic acid is a potent uncompetitive inosine monophosphate dehydrogenase (IMPDH) inhibitor with an EC₅₀ of 0.24 µM. Mycophenolic acid demonstrates antiviral effects against a wide range of RNA viruses including influenza. Mycophenolic acid is an immunosuppressive agent. Antiangiogenic and antitumor effects.

Quinine is an orally active alkaloid extracted from cinchona bark, possessing various biological activities including antimalarial, antidengue virus (DENV), and anticancer properties. Quinine is a potassium channel inhibitor that inhibits WT mouse Slo3 (K_Ca5.1) channel currents evoked by voltage pulses to +100 mV with an IC₅₀ of 169 μM.

Theaflavin 3,3'-digallate (TF-3) is a potent Zika virus (ZIKV) protease inhibitor with an IC₅₀ of 2.3 μM. Theaflavin 3,3'-digallat directly binds to ZIKVpro (K_d=8.86 μM) and inhibits ZIKV replication. Theaflavin 3,3'-digallat inhibits the activity of gp41 and NS2B-3 protease and has antiviral activity against HSV and HIV-1. Theaflavin 3,3'-digallate, the typical pigment in black tea, is a potent antitumor agent.

Mosnodenvir (JNJ-1802) is an orally active pan serotype dengue virus (DENV) inhibitor, with EC₅₀ values ranging from 0.057 to 11 nM for four dengue virus (DENV) serotypes. Mosnodenvir blocks viral replication by inhibiting the formation of complexes between two viral proteins, nonstructural protein 3 (NS3) and NS4B, thereby preventing the formation of new viral RNA. Mosnodenvir exhibits picomolar to nanomolar antiviral activity in vitro and has antiviral efficacy in mice and non-human primates.

PKI 14-22 amide, myristoylated is a selective, cAMP-dependent, competitive PKA inhibitor with K_i=~36 nM. The myristoylation modification of PKI 14-22 amide, myristoylated makes it more permeable to cell membranes and blood-brain barriers than the precursor molecule. PKI 14-22 amide, myristoylated can block the phosphorylation of cAMP-dependent downstream targets (such as CREB). PKI 14-22 amide, myristoylated can prevent the development of morphine analgesic tolerance in mice, and also inhibits protein translation and negative-strand RNA synthesis of Zika virus. PKI 14-22 amide, myristoylated can be used in research fields such as opioid tolerance mechanisms and antiviral drugs.

Pyridostatin (RR82) TFA is a G-quadruplex (G4) inducer/stabilizer with a K_d of 490 nM. Pyridostatin TFA also acts as an inhibitor of Zika virus (ZIKV) NS2B-NS3 protease, with an IC₅₀ of 11.0 μM. Pyridostatin TFA interacts with G-quadruplex structures, regulates the expression of SRC and SUB1, and induces replication- and transcription-dependent DNA damage, growth arrest, and genomic instability. Pyridostatin TFA exhibits antiproliferative and antiviral activities. Pyridostatin TFA can be used in studies related to breast cancer, cervical cancer, and Zika virus infection.

Prochlorperazine dimaleate is an orally active phenothiazine-type dopamine D2 receptor (D2R) antagonist. Prochlorperazine exhibits anti-cancer activity in vitro against various cancer cell lines. Prochlorperazine dimaleate exhibits IC₅₀ values of 6.4 μM, 4.5 μM and 2.3 μM for NOX1, NOX2 and NOX5, respectively. Prochlorperazine dimaleate has antedesmosidic activity against dengue virus (DENV). Prochlorperazine dimaleate can be used for research on nausea, vomiting, migraine, and schizophrenia.

Tiratricol is an orally available thyroid hormone analog that inhibits pituitary thyroid-stimulating hormone secretion. Tiratricol is an intracellular toxin neutralizer that inhibits LPS and lipid A cytotoxicity with IC₅₀s of 20 μM and 32 μM, respectively. Tiratricol reduces TNF production in lipopolysaccharide-stimulated macrophages. Tiratricol also has antiviral activity and is an inhibitor of yellow fever virus (Flavivirus). It can bind to the RdRp domain of the viral NS5 protein to hinder YFV replication..

PKI 14-22 amide, myristoylated TFA is a selective, cAMP-dependent, competitive PKA inhibitor with K_i=~36 nM. The myristoylation modification of PKI 14-22 amide, myristoylated TFA makes it more permeable to cell membranes and blood-brain barriers than the precursor molecule. PKI 14-22 amide, myristoylated TFA can block the phosphorylation of cAMP-dependent downstream targets (such as CREB). PKI 14-22 amide, myristoylated TFA can prevent the development of analgesic tolerance in mice, and also inhibits protein translation and negative-strand RNA synthesis of Zika virus. PKI 14-22 amide, myristoylated TFA can be used in research fields such as opioid tolerance mechanisms and antiviral drugs.

SN 2 is a potent activator of TRPML3 ion channel with an EC₅₀ of 1.8 μM. SN 2 also acts as a potent inhibitor of Dengue virus 2 (DENV2) and Zika virus (ZIKV).

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).

Mycophenolic acid sodium is a potent uncompetitive inosine monophosphate dehydrogenase (IMPDH) inhibitor with an EC₅₀ of 0.24 µM. Mycophenolic acid sodium demonstrates antiviral effects against a wide range of RNA viruses including influenza. Mycophenolic acid sodium is an immunosuppressive agent. Antiangiogenic and antitumor effects.

Mycophenolic acid-d₃ (Mycophenolate-d₃) is deuterium labeled Mycophenolic acid (HY-B0421). Mycophenolic acid is a potent uncompetitive inosine monophosphate dehydrogenase (IMPDH) inhibitor with an EC₅₀ of 0.24 μM. Mycophenolic acid demonstrates antiviral effects against a wide range of RNA viruses including influenza. Mycophenolic acid is an immunosuppressive agent. Antiangiogenic and antitumor effects.

Aminomethyltrioxsalen hydrochloride is a psoralen derivative. Aminomethyltrioxsalen hydrochloride can penetrate intact cells and react with nucleic acid secondary structures in vivo without disrupting the tissue structure of natural nucleoproteins. Aminomethyltrioxsalen hydrochloride inactivates viruses by crosslinking nucleic acid pyrimidine residues after exposure to UV-A radiation. Aminomethyltrioxsalen hydrochloride can be used in research related to dengue virus infection.