The CD28 signaling pathway regulates glucose metabolism.
Journal Article (Journal Article)
Lymphocyte activation initiates a program of cell growth, proliferation, and differentiation that increases metabolic demand. Although T cells increase glucose uptake and glycolysis during an immune response, the signaling pathways that regulate these increases remain largely unknown. Here we show that CD28 costimulation, acting through phosphatidylinositol 3'-kinase (PI3K) and Akt, is required for T cells to increase their glycolytic rate in response to activation. Furthermore, CD28 controls a primary response pathway, inducing a level of glucose uptake and glycolysis in excess of that needed to maintain cellular ATP/ADP levels or macromolecular synthesis. These data suggest that CD28 costimulation functions to increase glycolytic flux, allowing T cells to anticipate energetic and biosynthetic needs associated with a sustained response.
- Frauwirth, KA; Riley, JL; Harris, MH; Parry, RV; Rathmell, JC; Plas, DR; Elstrom, RL; June, CH; Thompson, CB
- June 2002
Volume / Issue
- 16 / 6
Start / End Page
- 769 - 777
International Standard Serial Number (ISSN)
Digital Object Identifier (DOI)
- United States