purine nucleoside phosphorylase

Purine Nucleoside Phosphorylase, an essential enzyme in purine metabolism, plays a critical role in the purine salvage pathway. Its deficiency impairs T cell function. With inorganic orthophosphate as a co-substrate, this enzyme catalyzes the cleavage of the glycosidic bond linking ribose and deoxyribonucleoside, resulting in the production of a purine base and ribose (deoxyribose)-1-phosphate [1].

2'-Deoxyinosine (Guanine deoxyriboside) inhibits the growth of human colon-carcinoma cell lines and is associated with purine nucleoside phosphorylase (PNP) deficiency.

Peldesine (BCX 34) is an effective, competitive, reversible, and orally active inhibitor of purine nucleoside phosphorylase. Peldesine inhibits T-cell proliferation with an IC50 of 800 nM. Peldesine can be used in research on cutaneous T-cell lymphoma, psoriasis and HIV infection.

Ulodesine (BCX4208) is a purine nucleoside phosphorylase (PNP) inhibitor that inhibits PNP with an IC50 value of 2.293 nM/L. Ulodesine may be used to study hyperuricaemia.

Allopurinol riboside is a metabolite of allopurinol with potency against parasites. Allopurinol riboside competitively inhibits the action of purine nucleoside phosphorylase on inosine with a Ki of 277 μM.

2'-Fluoro-2'-Deoxyadenosine is efficiently cleaved to the toxic 2-fluoroadenine (FAde) by Escherichia coli purine nucleoside phosphorylase (PNP). 2'-Fluoro-2'-Deoxyadenosine showed good in vivo activity against tumors expressing E. coli PNP. 2'-Fluoro-2'-Deoxyadenosine can be used to synthesize 2'-deoxy-2'-fluoromodified oligonucleotides that can hybridize to RNA.

5-Aza-7-deazaguanine is a substrate for E. coli purine nucleoside phosphorylase (wild-type/Ser90Ala mutant) in the synthesis of base-modified nucleosides.

8-Aminoinosine is an endogenous 8-aminopurine that induces diuresis, natriuresis, and glucosuria by inhibiting purine nucleoside phosphorylase (PNPase).

Forodesine (BCX-1777) is an orally active and potent purine nucleoside phosphorylase (PNP) inhibitor, a new purine nucleoside analog, inhibitor of human lymphocyte proliferation, induces apoptosis in leukemic cells by increasing dGTP levels, and may be useful in the study of cutaneous T-cell lymphomas.

Forodesine hydrochloride (BCX-1777 hydrochloride), a potent inhibitor of human lymphocyte proliferation, effectively induces apoptosis in leukemic cells by elevating dGTP levels. This compound is an orally active, highly potent purine nucleoside phosphorylase (PNP) inhibitor, demonstrating IC50 values between 0.48 to 1.57 nM across human, mouse, rat, monkey, and dog PNP.

MDL-74428 is an inhibitor of purine nucleoside phosphorylase.

9-Deazaguanine is a nucleoside analog that exhibits potent inhibitory activity against purine nucleoside phosphorylase (PNP) [1].

Peldesine (BCX 34) dihydrochloride is a potent, competitive, reversible, and orally active inhibitor of purine nucleoside phosphorylase (PNP), exhibiting IC50 values of 36 nM, 5 nM, and 32 nM against human, rat, and mouse red blood cell (RBC) PNP, respectively. Additionally, it acts as an inhibitor of T-cell proliferation with an IC50 of 800 nM. This compound shows promise for research into cutaneous T-cell lymphoma, psoriasis, and HIV infection [1] [2] [3] [4].

CI 972 anhydrous is an inhibitor of purine nucleoside phosphorylase (PNP) (Ki: 0.83 μM) used as a T cell-selective immunosuppressive agent.

3'-Deoxyguanosine is a ligand that can be complexed with enzymes, such as purine nucleoside phosphorylase, and receptors.

Nucleoside Derivatives –7-Deaza-purine nucleosides; Drugs and Inhibitors; Purine nucleoside phosphorylase inhibitor

Nucleoprotein (118-126),a fragment of Nucleoprotein, is a 9-aa peptide .