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文献阅读-ONECUT2 is a driver of neur

2019-04-05  本文已影响45人  Juan_NF
1 术语|背景知识
  • NET 神经内分泌肿瘤
    起源于全身任何部位神经内分泌细胞的肿瘤,广泛分布于人体,不仅存在于一些内分泌器官或组织,还散在分布于支气管、肺、胃肠道、胰腺、胆管和肝脏等。
  • 缺氧 肿瘤
    肿瘤组织普遍缺氧,若要继续生长必须依赖新血管的生成供给其所需的养分,否则肿瘤组织将无法继续生长甚至凋亡。
  • CRPC castration-resistant prostatic adenocarcinoma
    许多早期前列腺癌需要正常水平的睾丸激素才能生长,但去势抵抗的前列腺癌则不然。 即使体内睾酮的量减少到非常低的水平,前列腺癌仍在继续增长。 也称为CRPC。(from NCI Dictionary)
  • NEPC (neuroendocrine prostate cancer) 神经内分泌前列腺癌
    PCa (prostate cancer) 前列腺癌
  • molecular signature database (MSigDB)
    定义了已知基因集,包括H和C1-C7八个系列(Collection/cluster)
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ONECUT2 is a potential master transcriptional regulator of poorly differentiated neuroendocrine tumors

筛选出在NETs中共同上调的基因88个,经人转录因子集过滤后剩9个转录因子


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ONECUT2 expression increases during PCa progression
ONECUT2 regulates hypoxia signaling in NE-like PC3 cells
ONECUT2 regulates HIF1α binding to the chromatin
ONECUT2 mediates HIF1α genomic binding through activation of SMAD3

58 ONECUT2 direct upregulated genes ;This gene list was then filtered by motifs enriched in HIF1α binding sites in control PC3 cells compared
with ONECUT2 knockdown cells.Further filtering with HIF1α interacting proteins(list from BioGIRD) pinpointed SMAD3 as a candidate HIF1α co-factor activated by ONECUT2.

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ONECUT2 and hypoxia synergize to drive neuroendocrine plasticity
NEPC with ectopic ONECUT2 expression is highly hypoxic

Hypoxia得分和ONECUT2上调基因得分由各自相应基因的z-score加和而来,Hypoxia得分基于32个前列腺癌特定缺氧相关标志基因,ONECUT2得分基于缺氧条件下的PC3细胞中123个ONECUT2上调基因而来 。

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