Nicotinamide mononucleotide (NMN) is a biosynthetic precursor of NAD+, but how NMN is taken up into cells has not been entirely clear. Here the authors discover a specific NMN transporter, encoded by the Slc12a8 gene, which regulates NMN uptake and cellular NAD+ levels in vitro and in the mouse intestine in vivo.
- Alessia Grozio
- Kathryn F. Mills
- Shin-ichiro Imai