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NLRP3 inflammasome activation By 17β-estradiol is a potential therapeutic target in hepatocellular carcinoma treatment
Medical Oncology ( IF 2.8 ) Pub Date : 2023-02-10 , DOI: 10.1007/s12032-022-01945-z
Sara F Awwad 1 , Raymonde H Assaf 1 , Ahmed A Emam 2 , Amgad A Fouad 3 , Lamiaa F Arafa 1 , Aya A El-Hanafy 1
Affiliation  

Hepatocellular carcinoma (HCC) is one of the most common cancers worldwide, and it mostly arises as a consequence of persistent chronic inflammation. Recently, NLRP3 inflammasome has caught the attention of many research groups due to its involvement in different types of cancer. However, its direct role in HCC remains elusive. Our study aimed to evaluate the role of NLRP3 inflammasome and pyroptosis in HCC and to clarify the potential mechanism by which 17β-estradiol (E2) can be used as a protective factor against HCC. NLRP3, caspase-1 (CASP1) as well as gasdermin-D (GSDMD) mRNA expression levels were assessed in human HCC tissues and adjacent non-cancerous liver tissues. Also, HepG2 HCC cells were cultured and treated with E2, followed by detection of the mRNA levels of these three genes. Our results revealed that NLRP3, CASP1, and GSDMD mRNA expressions were significantly lower in HCC tissues than in controls, and this under-expression was closely correlated with advanced HCC stages and grades. In contrast, HepG2 HCC cells displayed significantly higher expression levels of NLRP3 inflammasome components and GSDMD in the two E2-treated groups compared to the untreated group. Also, NLRP3, CASP1, and GSDMD mRNA expression levels were positively correlated with each other. This study confirmed that lack of NLRP3 inflammasome is involved in HCC progression and 17β-estradiol-induced activation of NLRP3 inflammasome may be effective in HCC treatment as it inhibited tumor cell growth and proliferation by triggering CASP1-dependent pyroptosis in HCC cells.



中文翻译:

17β-雌二醇激活 NLRP3 炎性体是肝细胞癌治疗的潜在治疗靶点

肝细胞癌 (HCC) 是世界上最常见的癌症之一,主要由持续性慢性炎症引起。最近,NLRP3 炎症小体因其参与不同类型的癌症而引起了许多研究小组的关注。然而,它在 HCC 中的直接作用仍然难以捉摸。我们的研究旨在评估 NLRP3 炎性体和细胞焦亡在 HCC 中的作用,并阐明 17β-雌二醇 (E2) 可用作 HCC 保护因子的潜在机制。在人类 HCC 组织和邻近的非癌性肝组织中评估了 NLRP3、caspase-1 (CASP1) 以及 gasdermin-D (GSDMD) mRNA 表达水平。此外,培养 HepG2 HCC 细胞并用 E2 处理,然后检测这三个基因的 mRNA 水平。我们的结果显示 NLRP3、CASP1、和GSDMD mRNA在HCC组织中的表达显着低于对照组,并且这种低表达与晚期HCC分期和等级密切相关。相反,与未处理组相比,HepG2 HCC 细胞在两个 E2 处理组中显示出显着更高的 NLRP3 炎性体成分和 GSDMD 表达水平。此外,NLRP3、CASP1 和 GSDMD mRNA 表达水平彼此呈正相关。该研究证实,缺乏 NLRP3 炎性体参与 HCC 进展,17β-雌二醇诱导的 NLRP3 炎性体激活可能在 HCC 治疗中有效,因为它通过触发 HCC 细胞中 CASP1 依赖性细胞焦亡来抑制肿瘤细胞生长和增殖。这种低表达与晚期 HCC 阶段和等级密切相关。相反,与未处理组相比,HepG2 HCC 细胞在两个 E2 处理组中显示出显着更高的 NLRP3 炎性体成分和 GSDMD 表达水平。此外,NLRP3、CASP1 和 GSDMD mRNA 表达水平彼此呈正相关。该研究证实,缺乏 NLRP3 炎性体参与 HCC 进展,17β-雌二醇诱导的 NLRP3 炎性体激活可能在 HCC 治疗中有效,因为它通过触发 HCC 细胞中 CASP1 依赖性细胞焦亡来抑制肿瘤细胞生长和增殖。这种低表达与晚期 HCC 阶段和等级密切相关。相反,与未处理组相比,HepG2 HCC 细胞在两个 E2 处理组中显示出显着更高的 NLRP3 炎性体成分和 GSDMD 表达水平。此外,NLRP3、CASP1 和 GSDMD mRNA 表达水平彼此呈正相关。该研究证实,缺乏 NLRP3 炎性体参与 HCC 进展,17β-雌二醇诱导的 NLRP3 炎性体激活可能在 HCC 治疗中有效,因为它通过触发 HCC 细胞中 CASP1 依赖性细胞焦亡来抑制肿瘤细胞生长和增殖。此外,NLRP3、CASP1 和 GSDMD mRNA 表达水平彼此呈正相关。该研究证实,缺乏 NLRP3 炎性体参与 HCC 进展,17β-雌二醇诱导的 NLRP3 炎性体激活可能在 HCC 治疗中有效,因为它通过触发 HCC 细胞中 CASP1 依赖性细胞焦亡来抑制肿瘤细胞生长和增殖。此外,NLRP3、CASP1 和 GSDMD mRNA 表达水平彼此呈正相关。该研究证实,缺乏 NLRP3 炎性体参与 HCC 进展,17β-雌二醇诱导的 NLRP3 炎性体激活可能在 HCC 治疗中有效,因为它通过触发 HCC 细胞中 CASP1 依赖性细胞焦亡来抑制肿瘤细胞生长和增殖。

更新日期:2023-02-10
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