thymidine phosphorylase

Capecitabine (Capecitibine) is a fluoropyrimidine carbamate belonging to the class of antineoplastic agents called antimetabolites. As a prodrug, capecitabine is selectively activated by tumor cells to its cytotoxic moiety, 5-fluorouracil (5-FU); subsequently, 5-FU is metabolized to two active metabolites, 5-fluoro-2-deoxyuridine monophosphate (FdUMP) and 5-fluorouridine triphosphate (FUTP) by both tumor cells and normal cells. FdUMP inhibits DNA synthesis and cell division by reducing normal thymidine production, while FUTP inhibits RNA and protein synthesis by competing with uridine triphosphate for incorporation into the RNA strand.

Doxifluridine (AMC 0101) is a fluoropyrimidine derivative and oral prodrug of the antineoplastic agent 5-fluorouracil (5-FU) with antitumor activity. Doxifluridine, designed to circumvent the rapid degradation of 5-FU by dihydropyrimidine dehydrogenase in the gut wall, is converted into 5-FU in the presence of pyrimidine nucleoside phosphorylase. 5-FU interferes with DNA synthesis and subsequent cell division by reducing normal thymidine production and interferes with RNA transcription by competing with uridine triphosphate for incorporation into the RNA strand.

Tipiracil hydrochloride (MA-1 hydrochloride) is a thymidine phosphorylase inhibitor (TPI). Tipiracil hydrochloride is one of the active components in TAS-102, which is an anticancer drug candidate currently in clinical trials.

Antiangiogenic agent 2 (compound 3b) is a potent thymidine phosphorylase inhibitor (IC50: 39.71 μM) with demonstrated anti-angiogenic effects.

Tipiracil is an inhibitor of thymidine phosphorylase(TPase).

2-Deoxy-L-ribose is the stereoisomer of 2-Deoxy-D-ribose and can inhibit the anti-apoptotic effects of 2-Deoxy-D-ribose. Additionally, 2-Deoxy-L-ribose is capable of suppressing tumor cell metastasis by downregulating thymidine phosphorylase overexpression.

7-Deazaxanthine (7DX) is an inhibitor of thymidine phosphorylase (TPase) and reduces TPase activity in a concentration-dependent manner, with an IC50 value of 40 μM. Additionally, 7-Deazaxanthine exhibits significant anti-angiogenic properties.