Glutamin
Udržení Krebsova cyklu
- Dodávka glukózy / glutaminu
Při hypoxii
- The sources of hypoxic citrate synthesis in a glioblastoma cell line that proliferates in profound hypoxia (0.5% O2) [1]
- Glucose uptake and conversion to lactic acid increased in hypoxia. [1]
- Clucose conversion into citrate dramatically declined. [1]
- Glutamine consumption remained constant in hypoxia [1]
- Hypoxic cells were addicted to the use of glutamine in hypoxia as a source of ?-ketoglutarate. [1]
- Glutamine provided the major carbon source for citrate synthesis during hypoxia. [1]
- There was a relative increase in glutamine-dependent citrate production in hypoxia that resulted from carboxylation of ?-ketoglutarate. [1]
Literatura:
[1] Hypoxia promotes isocitrate dehydrogenasedependent carboxylation of ?-ketoglutarate to citrate to support cell growth and viability, David R. Wisea,b,1, Patrick S. Warda,b,1, Jessica E. S. Shayb,c, Justin R. Crossa, Joshua J. Gruberb, Uma M. Sachdevab, Jesse M. Plattb, Raymond G. DeMatteoa, M. Celeste Simonb,c, and Craig B. Thompson www.pnas.org/cgi/doi/10.1073/pnas.1117773108