Evidence map›Paper›PMID 33755743›Full record

ReviewCellular and molecular life sciences : CMLS2021

Enzymology of extracellular NAD metabolism.

Massimiliano Gasparrini, Leonardo Sorci, Nadia Raffaelli

Open access · hybridAbstract readReview
In one paragraph

Review in Cellular and molecular life sciences : CMLS, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
4.7field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

27 citing papers in PubMed, 40 citations in OpenAlex.

  1. Article
  2. Transition-state analysis of the arginine-specific human ADP-ribosyltransferase 1.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Synthesis of Bispecific Conjugates by ADP-Ribosyl Cyclases.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Extracellular NADJournal of cancer research and clinical oncology · 2025
    Article
  10. Review
  11. Review
  12. Article
  13. Regulation of and challenges in targeting NADNature reviews. Molecular cell biology · 2024
    Review
  14. Extracellular NADCommunications biology · 2024
    Article
  15. Review
  16. The role of nicotinamide adenine dinucleotide salvage enzymes in cardioprotection.Kardiochirurgia i torakochirurgia polska = Polish journal of cardio-thoracic surgery · 2024
    Review
  17. NADSub-cellular biochemistry · 2024
    Review
  18. NADAntioxidants & redox signaling · 2023
    Review
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Massimiliano GasparriniDepartment of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131, Ancona, Italy.ORCID http://orcid.org/0000-0001-9738-2663
Leonardo SorciDivision of Bioinformatics and Biochemistry, Department of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, Via Brecce Bianche, 60131, Ancona, Italy.ORCID http://orcid.org/0000-0002-4356-8873
Nadia RaffaelliDepartment of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131, Ancona, Italy. n.raffaelli@staff.univpm.it.ORCID http://orcid.org/0000-0002-4458-1789
Marche Polytechnic University · IT

Funding

Ministero dell'Istruzione, dell'Università e della Ricerca PRIN 2017CBNCYT
6 · The paper itself

Abstract

Extracellular NAD represents a key signaling molecule in different physiological and pathological conditions. It exerts such function both directly, through the activation of specific purinergic receptors, or indirectly, serving as substrate of ectoenzymes, such as CD73, nucleotide pyrophosphatase/phosphodiesterase 1, CD38 and its paralog CD157, and ecto ADP ribosyltransferases. By hydrolyzing NAD, these enzymes dictate extracellular NAD availability, thus regulating its direct signaling role. In addition, they can generate from NAD smaller signaling molecules, like the immunomodulator adenosine, or they can use NAD to ADP-ribosylate various extracellular proteins and membrane receptors, with significant impact on the control of immunity, inflammatory response, tumorigenesis, and other diseases. Besides, they release from NAD several pyridine metabolites that can be taken up by the cell for the intracellular regeneration of NAD itself. The extracellular environment also hosts nicotinamide phosphoribosyltransferase and nicotinic acid phosphoribosyltransferase, which inside the cell catalyze key reactions in NAD salvaging pathways. The extracellular forms of these enzymes behave as cytokines, with pro-inflammatory functions. This review summarizes the current knowledge on the extracellular NAD metabolome and describes the major biochemical properties of the enzymes involved in extracellular NAD metabolism, focusing on the contribution of their catalytic activities to the biological function. By uncovering the controversies and gaps in their characterization, further research directions are suggested, also to better exploit the great potential of these enzymes as therapeutic targets in various human diseases.

Indexed as

DiseaseMetabolomeADP Ribose TransferasesAnimalsHumansNADPentosyltransferasesPyrophosphatasesSignal TransductionADP Ribose TransferasesNADnicotinate phosphoribosyltransferasenucleotide pyrophosphatasePentosyltransferasesPyrophosphatasesEctoenzymesNAMPTNAPRTNPP1Pyridine metabolitesSignaling proteins

Identifiers

PMID33755743
PMCPMC8038981
OpenAlexW3137661933

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.