IL6/ STAT3信號通過幹擾雌激素受體α增強乳腺癌轉移
作者:
小柯機器人發布時間:2020/7/18 20:03:38
英國劍橋大學Jason S. Carroll、Rasmus Siersbæk課題組的最新研究發現,白細胞介素6 (IL6)/ STAT3信號通過幹擾雌激素受體α(ER)增強乳腺癌轉移。2020年7月16日,《癌細胞》在線發表了這項成果。
研究人員證明IL6 / STAT3信號以不依賴ER的方式誘導ER +乳腺癌細胞轉移。STAT3幹擾了部分ER增強子以誘導獨特的轉錄程序。儘管STAT3和ER共享這些增強子,但IL6 / STAT3的活性阻礙了以ER為靶點的標準治療。
相反,使用JAK抑制劑魯索替尼抑制STAT3活性可減少體內乳腺癌的侵襲。因此,IL6 / STAT3和ER致癌途徑在功能上是獨立的,這突出了針對IL6 / STAT3靶點在ER +乳腺癌治療中的潛能。
據了解,IL6及其下遊的效應因子STAT3組成了關鍵的致癌通路,之前研究表明在乳腺癌中該通路與ER功能相關。
附:英文原文
Title: IL6/STAT3 Signaling Hijacks Estrogen Receptor α Enhancers to Drive Breast Cancer Metastasis
Author: Rasmus Siersbk, Valentina Scabia, Sankari Nagarajan, Igor Chernukhin, Evangelia K. Papachristou, Rebecca Broome, Simon J. Johnston, Stacey E.P. Joosten, Andrew R. Green, Sanjeev Kumar, Julia Jones, Soleilmane Omarjee, Ruben Alvarez-Fernandez, Silvia Glont, Sarah J. Aitken, Kamal Kishore, Danya Cheeseman, Emad A. Rakha, Clive DSantos, Wilbert Zwart, Alasdair Russell, Cathrin Brisken, Jason S. Carroll
Issue&Volume: 2020-07-16
Abstract: The cytokine interleukin-6 (IL6) and its downstream effector STAT3 constitute a keyoncogenic pathway, which has been thought to be functionally connected to estrogenreceptor α (ER) in breast cancer. We demonstrate that IL6/STAT3 signaling drives metastasisin ER+ breast cancer independent of ER. STAT3 hijacks a subset of ER enhancers to drivea distinct transcriptional program. Although these enhancers are shared by both STAT3and ER, IL6/STAT3 activity is refractory to standard ER-targeted therapies. Instead,inhibition of STAT3 activity using the JAK inhibitor ruxolitinib decreases breastcancer invasion in vivo. Therefore, IL6/STAT3 and ER oncogenic pathways are functionally decoupled, highlightingthe potential of IL6/STAT3-targeted therapies in ER+ breast cancer.
DOI: 10.1016/j.ccell.2020.06.007
Source: https://www.cell.com/cancer-cell/fulltext/S1535-6108(20)30311-1