NAMPT in regulated NAD biosynthesis and its pivotal role in human metabolism

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Nicotinamide phosphoribosyltransferase (NAMPT) catalyzes the first reversible step in NAD biosynthesis and nicotinamide (NAM) salvage. The enzyme is designed for efficient capture of nicotinamide by coupling of ATP hydrolysis to assist in extraordinary NAM binding affinity and formation of nicotinamide mononucleotide (NMN). NAMPT provides the mechanism to replenish the NAD pool in human metabolism. In addition to its role in redox biochemistry, NAD fuels the sirtuins (SIRTs) to regulate transcription factors involved in pathways linked to inflammation, diabetes and lifespan. NAMPT-mediated lifespan expansion has caused a focus on the catalytic mechanism, regulation and inhibition of NAMPT. Structural, mechanistic and inhibitor design all contribute to a developing but yet incomplete story of NAMPT function. Although the first generation of NAMPT inhibitors has entered clinical trials, disappointing outcomes suggest more powerful and specific inhibitors will be needed. Understanding the ATP-linked mechanism of NAMPT and the catalytic site machinery may permit the design of improved NAMPT inhibitors as more efficient drugs against cancer.

Original languageEnglish (US)
Pages (from-to)1947-1961
Number of pages15
JournalCurrent Medicinal Chemistry
Volume18
Issue number13
DOIs
StatePublished - May 2011

Fingerprint

Nicotinamide Phosphoribosyltransferase
Biosynthesis
Metabolism
NAD
Niacinamide
Nicotinamide Mononucleotide
Adenosine Triphosphate
Sirtuins
Salvaging
Biochemistry
Medical problems
Oxidation-Reduction
Machinery
Hydrolysis
Catalytic Domain
Transcription Factors
Clinical Trials
Inflammation

Keywords

  • Cancer
  • Diabetes
  • Inflammation
  • NAD biosynthesis
  • Nicotinamide phosphoribosyltransferase
  • PBEF
  • Visfatin

ASJC Scopus subject areas

  • Molecular Medicine
  • Pharmacology

Cite this

NAMPT in regulated NAD biosynthesis and its pivotal role in human metabolism. / Burgos, Emmanuel S.

In: Current Medicinal Chemistry, Vol. 18, No. 13, 05.2011, p. 1947-1961.

Research output: Contribution to journalArticle

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