Protein kinase C isoforms: Multi-functional regulators of cell life and death.

Protein kinase C isoforms: Multi-functional regulators of cell life and death.
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DOI:
10.2741/3385
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发表时间:
2009-01-01
期刊:
Frontiers in bioscience (Landmark edition)
影响因子:
--
通讯作者:
Reyland ME
Reyland ME
中科院分区:
其他
文献类型:
--
作者:
Reyland ME

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蛋白激酶C (PKC)家族由10个相关的丝氨酸/苏氨酸蛋白激酶组成,其中一些是细胞增殖、存活和细胞死亡的关键调节因子。虽然早期的研究依赖于该家族的广谱化学激活剂或抑制剂,但同种异构体特异性工具的产生极大地促进了我们对特定PKC同种异构体对细胞增殖和凋亡的贡献的理解。这些研究表明,PKC- α、PKC-epsilon以及非典型PKC的PKC-lambda/iota和PKC-zeta优先促进细胞增殖和存活,而新的PKC-delta是细胞凋亡的重要调节因子。该激酶家族在细胞存活和凋亡中的重要作用表明,特定的同种异构体可能作为分子传感器,根据环境线索促进细胞存活或死亡。鉴于它们在细胞和组织稳态中的核心作用,在人类疾病,特别是癌症中,其中一些激酶的表达或活性发生改变就不足为奇了。
The protein kinase C (PKC) family consists of 10 related serine/threonine protein kinases some of which are critical regulators of cell proliferation, survival and cell death. While early studies relied on broad spectrum chemical activators or inhibitors of this family, the generation of isoform specific tools has greatly facilitated our understanding of the contribution of specific PKC isoforms to cell proliferation and apoptosis. These studies suggest that PKC-alpha, PKC-epsilon, and the atypical PKC’s, PKC-lambda/iota and PKC-zeta, preferentially function to promote cell proliferation and survival, while the novel isoform, PKC-delta is an important regulator of apoptosis. The essential role of this kinase family in both cell survival and apoptosis suggests that specific isoforms may function as molecular sensors, promoting cell survival or cell death depending on environmental cues. Given their central role in cell and tissue homeostasis, it is not surprising that the expression or activity of some of these kinases is altered in human diseases, particularly cancer.
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