Glutaminase: a hot spot for regulation of cancer cell metabolism?

Glutaminase: a hot spot for regulation of cancer cell metabolism?
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DOI:
10.18632/oncotarget.208
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发表时间:
2010-12
期刊:
影响因子:
--
通讯作者:
Cerione RA
Cerione RA
中科院分区:
其他
文献类型:
--
作者:
Erickson JW;Cerione RA

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癌细胞重新编程它们的代谢机制,以满足它们的生物能量和生物合成需求。癌细胞代谢重编程的一个关键方面涉及糖酵解途径的变化(称为“瓦尔堡效应”)。作为这些变化的结果,通过糖酵解途径产生的大部分丙酮酸被转化为乳酸,而不是用于产生乙酰辅酶A和最终进入柠檬酸循环的柠檬酸。为了补偿这些变化并帮助维持正常的柠檬酸循环,癌细胞通常依赖于升高的谷氨酰胺代谢。最近,我们发现这是通过显著提高癌细胞中的转氨酶活性来实现的。在这里,我们进一步考虑这些发现和可能的机制,这一重要的代谢活动的调节。
Cancer cells re-program their metabolic machinery in order to satisfy their bioenergetic and biosynthetic requirements. A critical aspect of the re-programming of cancer cell metabolism involves changes in the glycolytic pathway (referred to as the “Warburg effect”). As an outcome of these changes, much of the pyruvate generated via the glycolytic pathway is converted to lactic acid, rather than being used to produce acetyl-CoA and ultimately, the citrate which enters the citric acid cycle. In order to compensate for these changes and to help maintain a functioning citric acid cycle, cancer cells often rely on elevated glutamine metabolism. Recently, we have found that this is achieved through a marked elevation of glutaminase activity in cancer cells. Here we further consider these findings and the possible mechanisms by which this important metabolic activity is regulated.
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