Molecule

DB01005 

S1896 

Research Area: Cancer
Biological Activity:
Hydroxyurea(Cytodrox) is an antineoplastic agent that inhibits DNA synthesis through the inhibition of ribonucleoside diphosphate reductase. Hydroxyurea is converted to a free radical nitroxide (NO) in vivo, and transported by diffusion into cells where it quenches the tyrosyl free radical at the active site of the M2 protein subunit of ribonucleotide reductase, inactivating the enzyme. The entire replicase complex, including ribonucleotide reductase, is inactivated and DNA synthesis is selectively inhibited, producing cell death in S phase and synchronization of the fraction of cells that survive. Repair of DNA damaged by chemicals or irradiation is also inhibited by hydroxyurea, offering potential synergy between hydroxyurea and radiation or alkylating agents. Hydroxyurea also increases the level of fetal hemoglobin, leading to a reduction in the incidence of vasoocclusive crises in sickle cell anemia. Levels of fetal hemoglobin increase in response to activation of soluble guanylyl cyclase (sGC) by hydroxyurea-derived NO. [1]

02102023 

Crystalline
Inhibitor of DNA synthesis.

05223590 

MP Biomedicals Rare Chemical collection

H8627 

包装
1, 5, 10, 25, 100 g in poly bottle
Biochem/physiol Actions
抗肿瘤剂。通过形成自由基硝基氧灭活核糖核苷还原酶，自由基硝基氧可结合到酶活性位点的酪氨酰自由基。这可阻断脱氧核苷酸的合成，从而抑制 DNA 合成，并且诱导细胞周期同步化或 S-期细胞死亡。

115207 

Application
Inhibitor of DNA synthesis.
Biochem/physiol Actions
Anti-neoplastic. Inactivates ribonucleoside reductase by forming a free radical nitroxide that binds a tyrosyl free radical in the active site of the enzyme. This blocks the synthesis of deoxynucleotides, which inhibits DNA synthesis and induces synchronization or cell death in S-phase.

55291 

Biochem/physiol Actions
Anti-neoplastic. Inactivates ribonucleoside reductase by forming a free radical nitroxide that binds a tyrosyl free radical in the active site of the enzyme. This blocks the synthesis of deoxynucleotides, which inhibits DNA synthesis and induces synchronization or cell death in S-phase.

H991000 

An anti-neoplastic - inhibits ribonucleoside reductase and DNA replication. A potential therapy for sickle cell anemia which involves the nitrosylation of sickle cell hemoglobin. Horseradish peroxidase catalyzes nitric oxide formation from hydroxyurea in

CHEBI:44423 

A member of the class of ureas that is urea in which one of the hydrogens is replaced by a hydroxy group. An antineoplastic used in the treatment of chronic myeloid leukaemia as well as for sickle-cell disease.