AP-1 Subunit JUNB Promotes Invasive Phenotypes in Endometriosis.

AP-1 Subunit JUNB Promotes Invasive Phenotypes in Endometriosis.
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DOI:
10.1007/s43032-022-00974-3
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发表时间:
2022-11
期刊:
Reproductive sciences (Thousand Oaks, Calif.)
影响因子:
--
通讯作者:
--
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其他
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子宫内膜异位症是一种因异位部位存在异常子宫内膜而定义的疾病,导致 10% 的女性疼痛和不孕。染色质重塑蛋白 ARID1A(富含 AT 的相互作用结构域蛋白 1A)的突变已在子宫内膜异位症中被发现,特别是在更严重的深部浸润性子宫内膜异位症和卵巢子宫内膜异位症亚型中。 ARID1A 已被证明可以调节激活蛋白 1 (AP-1) 转录因子结合位点的染色质,并且 AP-1 的表达已在多种子宫内膜异位症模型中得到证实。在这里,我们描述了 AP-1 亚基 JUNB 在促进子宫内膜异位症侵袭表型中的作用。通过在12Z子宫内膜异位症细胞系中进行的一系列敲低实验,我们发现子宫内膜异位症中JUNB的表达促进了ARID1A共同调控的上皮间质转化基因的表达,包括转录因子SNAI1和SNAI2、细胞粘附分子ICAM1和VCAM1以及细胞外基质重塑因子LOX和LOXL2。在高度侵袭性 ARID1A 缺陷型子宫内膜异位细胞中,联合敲低 JUNB 足以抑制侵袭。这些结果表明AP-1在浸润性子宫内膜异位症的进展中起着重要作用,治疗性抑制AP-1可以预防深部浸润性子宫内膜异位症的发生。
Endometriosis is a disease defined by the presence of abnormal endometrium at ectopic sites, causing pain and infertility in 10% of women. Mutations in the chromatin remodeling protein ARID1A (AT-rich interactive domain-containing protein 1A) have been identified in endometriosis, particularly in the more severe deep infiltrating endometriosis and ovarian endometrioma subtypes. ARID1A has been shown to regulate chromatin at binding sites of the Activator Protein 1 (AP-1) transcription factor, and AP-1 expression has been shown in multiple endometriosis models. Here, we describe a role for AP-1 subunit JUNB in promoting invasive phenotypes in endometriosis. Through a series of knockdown experiments in the 12Z endometriosis cell line, we show that JUNB expression in endometriosis promotes the expression of epithelial-to-mesenchymal transition genes co-regulated by ARID1A including transcription factors SNAI1 and SNAI2, cell adhesion molecules ICAM1 and VCAM1 and extracellular matrix remodelers LOX and LOXL2. In highly invasive ARID1A-deficient endometriotic cells, co-knockdown of JUNB is sufficient to suppress invasion. These results suggest that AP-1 plays an important role in the progression of invasive endometriosis, and that therapeutic inhibition of AP-1 could prevent the occurrence of deep infiltrating endometriosis.
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