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NMNAT2 is a druggable target to drive neuronal NAD production
Department of Clinical Neuroscience, Division of Eye and Vision, St. Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden.
Department of Clinical Neuroscience, Division of Eye and Vision, St. Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden.
School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, Cardiff, United Kingdom.
Department of Clinical Neuroscience, Division of Eye and Vision, St. Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden.
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2024 (English)In: Nature Communications, E-ISSN 2041-1723, Vol. 15, no 1, article id 6256Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Springer Nature, 2024. Vol. 15, no 1, article id 6256
National Category
Neurosciences
Identifiers
URN: urn:nbn:se:umu:diva-228124DOI: 10.1038/s41467-024-50354-5ISI: 001276353800023PubMedID: 39048544Scopus ID: 2-s2.0-85199429355OAI: oai:DiVA.org:umu-228124DiVA, id: diva2:1886773
Funder
Eye FoundationThe Karolinska Institutet's Research FoundationLoo och Hans Ostermans Stiftelse för medicinsk forskningLars Hierta Memorial FoundationKnut and Alice Wallenberg FoundationRegion VästerbottenKarolinska InstituteSwedish Research Council, 2018-02124Swedish Research Council, 2022-00799Stiftelsen Kronprinsessan Margaretas arbetsnämnd för synskadadeHedlund foundation
Note

Errata:

Tribble, J.R., Jöe, M., Varricchio, C. et al. Author Correction: NMNAT2 is a druggable target to drive neuronal NAD production. Nat Commun 15, 8143 (2024). https://doi.org/10.1038/s41467-024-52439-7

Available from: 2024-08-05 Created: 2024-08-05 Last updated: 2025-04-24Bibliographically approved

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Jóhannesson, Gauti

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