Molecules and Cells

, Volume 28, Issue 6, pp 559–563

Glyceraldehyde-3-phosphate, a glycolytic intermediate, plays a key role in controlling cell fate via inhibition of caspase activity

  • Mi Jang
  • Hyo Jin Kang
  • Sun Young Lee
  • Sang J. Chung
  • Sunghyun Kang
  • Seung Wook Chi
  • Sayeon Cho
  • Sang Chul Lee
  • Chong-Kil Lee
  • Byoung Chul Park
  • Kwang-Hee Bae
  • Sung Goo Park
Article

DOI: 10.1007/s10059-009-0151-7

Cite this article as:
Jang, M., Kang, H.J., Lee, S.Y. et al. Mol Cells (2009) 28: 559. doi:10.1007/s10059-009-0151-7

Abstract

Glyceraldehyde-3-phosphate is a key intermediate in several central metabolic pathways of all organisms. Aldolase and glyceraldehyde-3-phosphate dehydrogenase are involved in the production or elimination of glyceraldehyde-3-phosphate during glycolysis or gluconeogenesis, and are differentially expressed under various physiological conditions, including cancer, hypoxia, and apoptosis. In this study, we examine the effects of glyceraldehyde-3-phosphate on cell survival and apoptosis. Overexpression of aldolase protected cells against apoptosis, and addition of glyceraldehyde-3-phosphate to cells delayed apoptosis. Additionally, delayed apoptotic phenomena were observed when glyceraldehyde-3-phosphate was added to a cell-free system, in which artificial apoptotic process was induced by adding dATP and cytochrome c. Surprisingly, glyceraldehyde-3-phosphate directly suppressed caspase-3 activity in a reversible noncompetitive mode, preventing caspase-dependent proteolysis. Based on these results, we suggest that glyceraldehyde-3-phosphate, a key molecule in several central metabolic pathways, functions as a molecule switch between cell survival and apoptosis.

Keywords

aldolaseapoptosiscaspase-3GAPDHglyceraldehyde-3-phosphate

Copyright information

© The Korean Society for Molecular and Cellular Biology and Springer Netherlands 2009

Authors and Affiliations

  • Mi Jang
    • 1
  • Hyo Jin Kang
    • 2
  • Sun Young Lee
    • 1
    • 3
  • Sang J. Chung
    • 2
  • Sunghyun Kang
    • 1
  • Seung Wook Chi
    • 1
  • Sayeon Cho
    • 4
  • Sang Chul Lee
    • 1
  • Chong-Kil Lee
    • 3
  • Byoung Chul Park
    • 1
  • Kwang-Hee Bae
    • 1
  • Sung Goo Park
    • 1
  1. 1.Medical Proteomics Research CenterKorea Research Institute of Bioscience and BiotechnologyDaejeonKorea
  2. 2.BioNanotechnology Research CenterKorea Research Institute of Bioscience and BiotechnologyDaejeonKorea
  3. 3.Department of PharmacyChungbuk National UniversityCheongjuKorea
  4. 4.College of PharmacyChung-Ang UniversitySeoulKorea