TET-dioxygenase deficiency in oncogenesis and its targeting for tumor-selective therapeutics.

TET-dioxygenase deficiency in oncogenesis and its targeting for tumor-selective therapeutics.
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DOI:
10.1053/j.seminhematol.2020.12.002
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发表时间:
2021-01
影响因子:
3.6
通讯作者:
Jha BK
Jha BK
中科院分区:
医学3区
文献类型:
--
作者:
Guan Y;Hasipek M;Tiwari AD;Maciejewski JP;Jha BK

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TET2 是骨髓肿瘤中最常见的突变基因之一。 TET2 功能丧失会扰乱骨髓分化并导致克隆扩张。尽管人们对骨髓分化扭曲的生化机制有了广泛的了解,但靶向治疗仍然滞后。在这里,我们回顾已知的生化机制和由此产生的候选疗法。具体来说,我们讨论了维生素 C 补偿 TET 双加氧酶缺乏的潜在用途,从而恢复生化功能。另一种方法利用 TET 缺陷状态来实现合成致死,利用细胞存活所需的最低水平的 TET 双加氧酶活性这一事实,使 TET2 突变的恶性细胞选择性地容易受到 TET 功能抑制剂的影响。
TET2 is one of the most frequently mutated genes in myeloid neoplasms. TET2 loss-of-function perturbs myeloid differentiation and causes clonal expansion. Despite extensive knowledge regarding biochemical mechanisms underlying distorted myeloid differentiation, targeted therapies are lagging. Here we review known biochemical mechanisms and candidate therapies that emerge from this. Specifically, we discuss the potential utility of vitamin C to compensate for TET-dioxygenase deficiency, to thereby restore the biochemical function. An alternative approach exploits the TET-deficient state for synthetic lethality, exploiting the fact that a minimum level of TET-dioxygenase activity is required for cell survival, rendering TET2-mutant malignant cells selectively vulnerable to inhibitors of TET-function.
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