ウリジン-5′-二りん酸二ナトリウム

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説明Uridine-5'-diphosphate disodium salt (UDP-Na2) is a potent, selective P2Y6 receptor native agonist (EC50=300 nM; pEC50=6.52 for human P2Y6 receptor). It is an endogenous metabolite, catalyzes the glucuronidation of a wide array of substrates and is used in nucleic acid (RNA) biosynthesis. It has also been used as a purinergic agonist, in order to study its effect on the flux of absorbed cations in cochlear outer sulcus cells (OSC) and vestibular migratory cells (VTC). UDP-Na2 has also been used to determine the activity of nucleoside diphosphatase (NDPase) in the rabbit retina.

使用Uridine-5'-diphosphate disodium salt is mainly used in nucleic acid (RNA) biosynthesis and cell signalling studies. Uridine-5'-monophosphate disodium salt (UDP-MS) is a structural analogue of uridine and is used as a dietary supplement. It has been shown to inhibit phosphodiesterase and cyclic nucleotide phosphodiesterase, both of which are enzymes that degrade the secondary messenger cyclic adenosine monophosphate (cAMP).

使用Uridine-5'-diphosphate disodium salt (UDP-Na2) is an organometallic compound, It is a P2Y6 receptor agonist and GPR105 receptor inhibitor. It is used in studies on nucleic acid (RNA) biosynthesis and cell signaling. UDP is a nucleotide that upon phosphorylation to UTP becomes a substrate for enzymes such as RNA polymerase(s) and GTPases. These enzymes are involved in a wide range of applications from the synthesis of RNA to the regulation of G-coupled Protein Receptors (GPCR) and cell signaling molecules such as Rho-signaling via Guanine Nucleotide Exchange Factors (GEF).

純化方法Crystallise it from MeOH. It may contain some Ba salt(s); hence stir it with Amberlite IR-120 cation exchanger (25mL, wet resin, 15-50 mesh in H+ form) in H2O (50mL) until the nucleotide dissolves. Filter, wash resin with H2O until the eluate is neutral. Combine the filtrate and washings, and adjust the pH to 8.0 with 2.0 M aqueous NaOH. Concentrate it in vacuo to a small volume (~ 20mL), and add Me2CO dropwise until crystallisation begins. Cool to 0o, and the shiny plates of di Na uridine-5’-phosphate dihydrate are filtered off and dried over P2O5 at 25o/0.1mm for 24hours (>76% recovery). UV: max at 262nm ( 10,000 M-1cm -1) in 0.1 M HCl. [Boon et al. J Chem Soc 408 1950, Smith Biochemical Preparations 8 130 1960.] [Beilstein 24 IV 1214.]