Copy number amplification of ENSA promotes the progression of triple-negative breast cancer via cholesterol biosynthesis.

Copy number amplification of ENSA promotes the progression of triple-negative breast cancer via cholesterol biosynthesis.
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ENSA的拷贝数扩增通过胆固醇的生物合成促进三阴性乳腺癌的进展。

DOI:
10.1038/s41467-022-28452-z
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发表时间:
2022-02-10
影响因子:
16.6
通讯作者:
Yu KD
Yu KD
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Chen YY;Ge JY;Zhu SY;Shao ZM;Yu KD

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拷贝数改变(CNA)是三阴性乳腺癌(TNBC)中的关键遗传事件。在这里,我们对302例TNBC患者的整合拷贝数和转录组分析表明,基因α-内皮素(ENSA)在1q21.3区域表现出复发性扩增,并在TNBC中高度表达。ENSA促进肿瘤生长,并表明TNBC中患者存活率低。从机制上讲,我们将ENSA鉴定为TNBC中胆固醇生物合成的重要调节剂,其上调固醇调节元件结合转录因子2(SREBP 2)的表达,所述固醇调节元件结合转录因子2是胆固醇生物合成中的关键转录因子。我们证实ENSA可以增加p-STAT 3(Tyr 705)的水平,并且激活的STAT 3与SREBP 2的启动子结合以促进其转录。此外,我们揭示了STAT 3抑制剂Stattic在具有高ENSA表达的TNBC中的功效。总之,ENSA在1q21.3区域的扩增促进了TNBC进展,并表明对STAT 3抑制剂的敏感性。拷贝数改变是三阴性乳腺癌的关键遗传事件。在这里,作者表明ENSA在1q21.3区域的扩增通过胆固醇生物合成的上调促进了TNBC的进展。
Copy number alterations (CNAs) are pivotal genetic events in triple-negative breast cancer (TNBC). Here, our integrated copy number and transcriptome analysis of 302 TNBC patients reveals that gene alpha-endosulfine (ENSA) exhibits recurrent amplification at the 1q21.3 region and is highly expressed in TNBC. ENSA promotes tumor growth and indicates poor patient survival in TNBC. Mechanistically, we identify ENSA as an essential regulator of cholesterol biosynthesis in TNBC that upregulates the expression of sterol regulatory element-binding transcription factor 2 (SREBP2), a pivotal transcription factor in cholesterol biosynthesis. We confirm that ENSA can increase the level of p-STAT3 (Tyr705) and activated STAT3 binds to the promoter of SREBP2 to promote its transcription. Furthermore, we reveal the efficacy of STAT3 inhibitor Stattic in TNBC with high ENSA expression. In conclusion, the amplification of ENSA at the 1q21.3 region promotes TNBC progression and indicates sensitivity to STAT3 inhibitors. Copy number alterations are pivotal genetic events in triple-negative breast cancer. Here the authors show the amplification of ENSA at the 1q21.3 region promotes the progression of TNBC via up-regulation of cholesterol biosynthesis.
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