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Mizoribine (Bredinin) is an imidazole nucleoside and an immunosuppressive agent with an IC50 of approximately 100 μM. Mizoribine inhibits replication of SARS-CoV with IC50s of 3.5 μg/mL and 16 μg/mL for SARS-CoV Frankfurt-1 and SARS-CoV HKU39849, respectively. Mizoribine (Bredinin) exerts its activity through selective inhibition of inosine monophosphate synthetase and guanosine monophosphate synthetase, resulting in the complete inhibition of guanine nucleotide synthesis without incorporation into nucleotides. It arrests DNA synthesis in the S phase of cellular division. In vitro basophil histamine release assays suggested that Mizoribine might help to reduce anti-IgE autoantibody acting on the surface of basophils in chronic autoimmune urticaria. Mizoribine (MZR) reduced PAN-induced integrin-linked kinase activation (ILK) and phosphorylation of glycogen synthase kinase-3beta (GSK3beta) in vivo and in vitro. Mizoribine (MZR) directly prevents PAN-induced podocyte injury, possibly by affecting signaling cascades involving ILK and GSK3beta.
| Molecular Weight | 259.22 |
| Formula | C9H13N3O6 |
| CAS Number | 50924-49-7 |
| Solubility (25°C) | Water ≥ 30 mg/mL DMSO 30 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Related DNA/RNA Synthesis Products |
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| Clofarabine
Clofarabine inhibits the enzymatic activities of ribonucleotide reductase (IC50 = 65 nM) and DNA polymerase. |
| Gemcitabine Hydrochloride
Gemcitabine (Gemzar, LY188011) inhibits DNA synthesis with an IC50 of 0.06 µM. |
| Nelarabine
Nelarabine is a novel purine antimetabolite antineoplastic agent. |
| Capecitabine
Capecitabine is an orally-administered chemotherapeutic agent. Capecitabine is a precursor, that is enzymatically converted to 5-fluorouracil in the tumor, where it inhibits DNA synthesis and slows growth of tumor tissue. Capecitabine may inhibit cytochrome CYP2C9 enzyme, and therefore increase levels of substrates such as phenytoin and other substrates of CYP2C9. |
| Temozolomide
Temozolomide (TMZ) is an oral DNA methylating, chemotherapeutic agent. |
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