ENPP1, an Old Enzyme with New Functions, and Small Molecule Inhibitors—A STING in the Tale of ENPP1

Ectonucleotide pyrophosphatase/phosphodiesterase I (ENPP1) was identified several decades ago as a type II transmembrane glycoprotein with nucleotide pyrophosphatase and phosphodiesterase enzymatic activities, critical for purinergic signaling. Recently, ENPP1 has emerged as a critical phosphodieste...

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Main Authors: Kenneth I. Onyedibe, Modi Wang, Herman O. Sintim
Format: Article
Language:English
Published: MDPI AG 2019-11-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/24/22/4192
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author Kenneth I. Onyedibe
Modi Wang
Herman O. Sintim
author_facet Kenneth I. Onyedibe
Modi Wang
Herman O. Sintim
author_sort Kenneth I. Onyedibe
collection DOAJ
description Ectonucleotide pyrophosphatase/phosphodiesterase I (ENPP1) was identified several decades ago as a type II transmembrane glycoprotein with nucleotide pyrophosphatase and phosphodiesterase enzymatic activities, critical for purinergic signaling. Recently, ENPP1 has emerged as a critical phosphodiesterase that degrades the stimulator of interferon genes (STING) ligand, cyclic GMP−AMP (cGAMP). cGAMP or analogs thereof have emerged as potent immunostimulatory agents, which have potential applications in immunotherapy. This emerging role of ENPP1 has placed this “old” enzyme at the frontier of immunotherapy. This review highlights the roles played by ENPP1, the mechanism of cGAMP hydrolysis by ENPP1, and small molecule inhibitors of ENPP1 with potential applications in diverse disease states, including cancer.
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spelling doaj.art-a57e8569383f45d8a62bf2d3c65d0e912022-12-22T02:19:37ZengMDPI AGMolecules1420-30492019-11-012422419210.3390/molecules24224192molecules24224192ENPP1, an Old Enzyme with New Functions, and Small Molecule Inhibitors—A STING in the Tale of ENPP1Kenneth I. Onyedibe0Modi Wang1Herman O. Sintim2Chemistry Department, Institute for Drug Discovery, Purdue University, West Lafayette, IN 47907, USAChemistry Department, Institute for Drug Discovery, Purdue University, West Lafayette, IN 47907, USAChemistry Department, Institute for Drug Discovery, Purdue University, West Lafayette, IN 47907, USAEctonucleotide pyrophosphatase/phosphodiesterase I (ENPP1) was identified several decades ago as a type II transmembrane glycoprotein with nucleotide pyrophosphatase and phosphodiesterase enzymatic activities, critical for purinergic signaling. Recently, ENPP1 has emerged as a critical phosphodiesterase that degrades the stimulator of interferon genes (STING) ligand, cyclic GMP−AMP (cGAMP). cGAMP or analogs thereof have emerged as potent immunostimulatory agents, which have potential applications in immunotherapy. This emerging role of ENPP1 has placed this “old” enzyme at the frontier of immunotherapy. This review highlights the roles played by ENPP1, the mechanism of cGAMP hydrolysis by ENPP1, and small molecule inhibitors of ENPP1 with potential applications in diverse disease states, including cancer.https://www.mdpi.com/1420-3049/24/22/4192cyclic dinucleotidecgampenpp1cancer
spellingShingle Kenneth I. Onyedibe
Modi Wang
Herman O. Sintim
ENPP1, an Old Enzyme with New Functions, and Small Molecule Inhibitors—A STING in the Tale of ENPP1
Molecules
cyclic dinucleotide
cgamp
enpp1
cancer
title ENPP1, an Old Enzyme with New Functions, and Small Molecule Inhibitors—A STING in the Tale of ENPP1
title_full ENPP1, an Old Enzyme with New Functions, and Small Molecule Inhibitors—A STING in the Tale of ENPP1
title_fullStr ENPP1, an Old Enzyme with New Functions, and Small Molecule Inhibitors—A STING in the Tale of ENPP1
title_full_unstemmed ENPP1, an Old Enzyme with New Functions, and Small Molecule Inhibitors—A STING in the Tale of ENPP1
title_short ENPP1, an Old Enzyme with New Functions, and Small Molecule Inhibitors—A STING in the Tale of ENPP1
title_sort enpp1 an old enzyme with new functions and small molecule inhibitors a sting in the tale of enpp1
topic cyclic dinucleotide
cgamp
enpp1
cancer
url https://www.mdpi.com/1420-3049/24/22/4192
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