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NMNAT2 is a druggable target to drive neuronal NAD production

Authors :
James R. Tribble
Melissa Jöe
Carmine Varricchio
Amin Otmani
Alessio Canovai
Baninia Habchi
Evangelia Daskalakis
Romanas Chaleckis
Andrea Loreto
Jonathan Gilley
Craig E. Wheelock
Gauti Jóhannesson
Raymond C. B. Wong
Michael P. Coleman
Andrea Brancale
Pete A. Williams
Source :
Nature Communications, Vol 15, Iss 1, Pp 1-15 (2024)
Publication Year :
2024
Publisher :
Nature Portfolio, 2024.

Abstract

Abstract Maintenance of NAD pools is critical for neuronal survival. The capacity to maintain NAD pools declines in neurodegenerative disease. We identify that low NMNAT2, the critical neuronal NAD producing enzyme, drives retinal susceptibility to neurodegenerative insults. As proof of concept, gene therapy over-expressing full length human NMNAT2 is neuroprotective. To pharmacologically target NMNAT2, we identify that epigallocatechin gallate (EGCG) can drive NAD production in neurons through an NMNAT2 and NMN dependent mechanism. We confirm this by pharmacological and genetic inhibition of the NAD-salvage pathway. EGCG is neuroprotective in rodent (mixed sex) and human models of retinal neurodegeneration. As EGCG has poor drug-like qualities, we use it as a tool compound to generate novel small molecules which drive neuronal NAD production and provide neuroprotection. This class of NMNAT2 targeted small molecules could have an important therapeutic impact for neurodegenerative disease following further drug development.

Subjects

Subjects :
Science

Details

Language :
English
ISSN :
20411723
Volume :
15
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Nature Communications
Publication Type :
Academic Journal
Accession number :
edsdoj.752e0ceae3fe4a6387d7e708ced0fe15
Document Type :
article
Full Text :
https://doi.org/10.1038/s41467-024-50354-5