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β-nicotinamide Mononucleotide (NMN) Production in Escherichia Coli

β-nicotinamide Mononucleotide (NMN) Production in Escherichia Coli

George Cătălin Marinescu, Roua-Gabriela Popescu, Gheorghe Stoian, Anca Dinischiotu

Sci Rep. 2018 Aug 16;8(1):12278.

PMID: 30115969

Abstract:

Diabetes is a chronic and progressive disease with continuously increasing prevalence, rising financial pressure on the worldwide healthcare systems. Recently, the insulin resistance, hallmark of type 2 diabetes, was cured in mice treated with NAD+ precursor β-nicotinamide mononucleotide (NMN), no toxic effects being reported. However, NMN has a high price tag, more cost effective production methods are needed. This study proposes a biotechnological NMN production method in Escherichia coli. We show that bicistronic expression of recombinant nicotinamide phosphoribosyl transferase (Nampt) and phosphoribosyl pyrophosphate (PRPP) synthetase in the presence of nicotinamide (NAM) and lactose may be a successful strategy for cost effective NMN production. Protein expression vectors carrying NAMPT gene from Haemophilus ducreyi and PRPP synthetase from Bacillus amyloliquefaciens with L135I mutation were transformed in Escherichia coli BL21(DE3)pLysS. NMN production reached a maximum of 15.42 mg per L of bacterial culture (or 17.26 mg per gram of protein) in these cells grown in PYA8 medium supplemented with 0.1% NAM and 1% lactose.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP1094617	β-Nicotinamide mononucleotide		1094-61-7	Price

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