The P2X7 receptor is a key modulator of aerobic glycolysis.
The P2X7 receptor is a key modulator of aerobic glycolysis.
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DOI:
10.1038/cddis.2012.105
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发表时间:
2012-08-16
影响因子:
9
通讯作者:
中科院分区:
文献类型:
--
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Ability to adapt to conditions of limited nutrient supply requires a reorganization of the metabolic pathways to balance energy generation and production of biosynthetic intermediates. Several fast-growing cells overexpress the P2X7 receptor (P2X7R) for extracellular ATP. A feature of this receptor is to allow growth in the absence of serum. We show here that transfection of P2X7R allows proliferation of P2X7R-transfected HEK293 (HEK293-P2X7) cells not only in the absence of serum but also in low (4 mM) glucose, and increases lactate output compared with mock-transfected HEK293 (HEK293-mock) cells. In HEK293-P2X7, lactate output is further stimulated upon addition of exogenous ATP or the mitochondrial uncoupler carbonylcyanide p-trifluoromethoxyphenylhydrazone (FCCP). In the human neuroblastoma cell line ACN, lactate output is also dependent on P2X7R function. P2X7R-expressing cells upregulate (a) the glucose transporter Glut1, (b) the glycolytic enzymes glyceraldehyde 3-phosphate dehydrogenase (G3PDH), (c) phosphofructokinase (PFK), (d) pyruvate kinase M2 (PKM2) and (e) pyruvate dehydrogenase kinase 1 (PDHK1); furthermore, P2X7R expression (a) inhibits pyruvate dehydrogenase (PDH) activity, (b) increases phosphorylated Akt/PKB and hypoxia-inducible factor 1α (HIF-1α) expression and (c) enhances intracellular glycogen stores. In HEK293-P2X7 cells, glucose deprivation increases lactate production, expression of glycolytic enzymes and ph-Akt/PKB level. These data show that the P2X7R has an intrinsic ability to reprogram cell metabolism to meet the needs imposed by adverse environmental conditions.
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影响因子:
--
作者:
Jiang, Bing-Hua;Liu, Ling-Zhi
通讯作者:
Liu, Ling-Zhi
影响因子:
19
作者:
Feng Z;Levine AJ
通讯作者:
Levine AJ
DOI:
10.1097/mco.0b013e32833a5577
发表时间:
2010-07-01
影响因子:
3.1
作者:
Annibaldi, Alessandro;Widmann, Christian
通讯作者:
Widmann, Christian
影响因子:
4.8
作者:
Adinolfi, Elena;Cirillo, Maria;Di Virgilio, Francesco
通讯作者:
Di Virgilio, Francesco
影响因子:
4.4
作者:
Ferrari, D;Pizzirani, C;Di Virgilio, F
通讯作者:
Di Virgilio, F