β-nicotinamide mononucleotide (NMN) production in Escherichia coli.
George Cătălin MarinescuRoua-Gabriela PopescuGheorghe StoianAnca DinischiotuPublished in: Scientific reports (2018)
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.
Keyphrases
- escherichia coli
- healthcare
- insulin resistance
- type diabetes
- cardiovascular disease
- induced apoptosis
- multiple sclerosis
- poor prognosis
- gene expression
- metabolic syndrome
- adipose tissue
- klebsiella pneumoniae
- skeletal muscle
- risk factors
- signaling pathway
- cell death
- transcription factor
- staphylococcus aureus
- multidrug resistant
- cell cycle arrest
- long non coding rna
- social media