Shin-Ichiro Imai, MD, PhD

Medical School Department Biology
Research Program Mechanisms of Cancer Biology Program
Shin-Ichiro Imai

Researcher Background

Primary Academic Title

Professor of Developmental Biology, WashU Medicine

Training

  • 1997 - 1999: Postdoctoral Fellow, Biology, Massachusetts Institute of Technology, Cambridge, MA
  • 1999 - 2001: Postdoctoral Associate, Biology, Massachusetts Institute of Technology, Cambridge, MA

Education

  • 1989: MD, Keio University, Tokyo
  • 1995: PhD, Keio University, Tokyo

Research & Selected Publications

Research Interest

Aging is one of the most important predisposing factors for carcinogenesis. However, the molecular linkage between aging and carcinogenesis is not well understood. We are addressing this issue by studying the function of Sir2 NAD-dependent histone/protein deacetylases, which are known to control aging and longevity at least in yeast and worms. We recently found that mammalian Sir2alpha negatively regulates p53 and suppresses p53-mediated apoptosis. Thus, mammalian Sir2alpha may connect energy metabolism and aging to carcinogenesis.

Research Publications

Human plasma-derived eNAMPT-containing extracellular vesicles promote NAD+ biosynthesis and thermogenesis in mice.
Authors:

Yoshioka K, Sugimoto T, Oyabu M, one or more additional authors omitted Imai SI

Journal & Year:

NPJ Aging • 2025

Inter-organ communication is a critical machinery to regulate metabolism and aging.
Authors:

Tokizane K, Imai SI

Journal & Year:

Trends Endocrinol Metab • 2025

Protocol to study inter-tissue communication between the hypothalamus and white adipose tissue and lifespan using a chemogenetic approach in aged mice.
Authors:

Tokizane K, Imai SI

Journal & Year:

STAR Protoc • 2025

NAD World 3.0: the importance of the NMN transporter and eNAMPT in mammalian aging and longevity control.
Authors:

Imai SI

Journal & Year:

NPJ Aging • 2025

DMHPpp1r17 neurons regulate aging and lifespan in mice through hypothalamic-adipose inter-tissue communication.
Authors:

Tokizane K, Brace CS, Imai SI

Journal & Year:

Cell Metab • 2024

Absolute quantification of nicotinamide mononucleotide in biological samples by double isotope-mediated liquid chromatography-tandem mass spectrometry (dimeLC-MS/MS).
Authors:

Unno J, Mills KF, Ogura T, Nishimura M, Imai SI

Journal & Year:

NPJ Aging • 2024