Tubercidin是从Streptomyces tubercidicus得到的抗生素，抑制粪链球菌生长的IC50值为 0.02 μM。它是腺苷磷酸化酶的弱抑制剂，并干扰腺苷和 AMP 的磷酸化。它有抗病毒作用。

Tubercidin, an adenosine analogue, is a nucleoside antibiotic. It is incorporated into DNA and inhibits polymerases, thereby inhibiting DNA replication and RNA and protein synthesis. This agent also exhibits antifungal and antiviral activities.

Continuous exposure for 14 days to tubercidin alone is highly toxic to both human CFU-GM and BFU-E. The IC50s of tubercidin are 3.4±1.7 and 3.7±0.2 nM for CFU-GM and BFU-E, respectively. Tubercidin also has a direct dose-dependent inhibitory effect on myeloid and erythroid human bone marrow progenitor cells in vitro[1].

Tubercidin at the dose regimen (5 mg/kg everyday for 4 days) is lethal when used alone. Some of the studies show that the mortality from tubercidin is primarily due to hepatic and renal injuries and, to a lesser extent, damage to the pancreas. Coadministration of NBMPR-P at 25 mg/kg per day completely protects the mice (100% survival) from this lethal dose regimen of tubercidin[1].

Human bone marrow cells were obtained from healthy volunteers. In the protection studies, cells are exposed to 10 nM of tubercidin in the presence or absence of various doses of NBMPR-P. Cells are continuously exposed to drugs for 14 days in a humidified atmosphere of 5% C02-95% air at 37°C. Colonies of CFU-GM (250 cells) and BFU-E (>30 hemoglobinized cells) are counted with an inverted microscope. (Only for Reference)

69-33-0

C11H14N4O4

266.25

杀结核菌素;Sparsomycin A;结核菌素;7-Deazaadenosine

H2O:<1 mgml
DMSO:49 mg/mL (184 mM)
Ethanol:<1 mgml
Powder: -20°C for 3 years
In solvent: -80°C for 2 years