Abstract 2562: EGCG targeting of adipogenesis reveals a STAT3-mediated paracrine oncogenic control of triple-negative breast cancer cell invasive phenotype

N. G. Suárez, Sahily Rodriguez Torres, B. Annabi
{"title":"Abstract 2562: EGCG targeting of adipogenesis reveals a STAT3-mediated paracrine oncogenic control of triple-negative breast cancer cell invasive phenotype","authors":"N. G. Suárez, Sahily Rodriguez Torres, B. Annabi","doi":"10.1158/1538-7445.AM2021-2562","DOIUrl":null,"url":null,"abstract":"Background: Obese subjects have an increased risk of developing triple-negative breast cancer (TNBC), in part associated with the chronic low-grade inflammation state. On the other hand, epidemiological data indicates that increased consumption of polyphenol-rich fruits and vegetables plays a key role in reducing incidence of some cancers. Objectives: Here, we tested whether green tea-derived epigallocatechin-3-gallate (EGCG) could alter adipogenesis involved in the maturation of pre-adipocytes, and how this impacts the paracrine regulation of the mature adipocytes secretome on the TNBC invasive phenotype. Methods: Differentiation was performed and conditioned media (CM) from preadipocytes and mature adipocytes harvested. Human TNBC-derived MDA-MB-231 real-time cell migration was performed using the exCELLigence system. Differential gene arrays and RT-qPCR were used to assess gene expression levels. Western blotting was used to assess protein expression levels. In vitro vasculogenic mimicry (VM) was assessed with Matrigel. Results: EGCG was found to inhibit the induction of numerous key adipogenic biomarkers, including lipoprotein lipase, adiponectin, leptin, fatty acid synthase, and fatty acid binding protein 4. Increased MDA-MB-231 chemotaxis and VM were found in response to mature adipocytes secretome, and this was correlated with the induction of the STAT3 signaling pathway. This invasive phenotype was prevented by EGCG, JAK/STAT inhibitors Tofacitinib and AG490, as well as upon STAT3 gene silencing. Conclusion: Adipocytes secretome plays a key role in the paracrine regulation of TNBC cells invasive phenotype. Dietary catechin-mediated interventions may, in part through the inhibition of adipogenesis and modulation of adipocytes secretome, prevent the onset of an obesogenic environment that favors TNBC development. Citation Format: Narjara Gonzalez Suarez, Sahily Rodriguez Torres, Borhane Annabi. EGCG targeting of adipogenesis reveals a STAT3-mediated paracrine oncogenic control of triple-negative breast cancer cell invasive phenotype [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr 2562.","PeriodicalId":20290,"journal":{"name":"Prevention Research","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Prevention Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1158/1538-7445.AM2021-2562","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Background: Obese subjects have an increased risk of developing triple-negative breast cancer (TNBC), in part associated with the chronic low-grade inflammation state. On the other hand, epidemiological data indicates that increased consumption of polyphenol-rich fruits and vegetables plays a key role in reducing incidence of some cancers. Objectives: Here, we tested whether green tea-derived epigallocatechin-3-gallate (EGCG) could alter adipogenesis involved in the maturation of pre-adipocytes, and how this impacts the paracrine regulation of the mature adipocytes secretome on the TNBC invasive phenotype. Methods: Differentiation was performed and conditioned media (CM) from preadipocytes and mature adipocytes harvested. Human TNBC-derived MDA-MB-231 real-time cell migration was performed using the exCELLigence system. Differential gene arrays and RT-qPCR were used to assess gene expression levels. Western blotting was used to assess protein expression levels. In vitro vasculogenic mimicry (VM) was assessed with Matrigel. Results: EGCG was found to inhibit the induction of numerous key adipogenic biomarkers, including lipoprotein lipase, adiponectin, leptin, fatty acid synthase, and fatty acid binding protein 4. Increased MDA-MB-231 chemotaxis and VM were found in response to mature adipocytes secretome, and this was correlated with the induction of the STAT3 signaling pathway. This invasive phenotype was prevented by EGCG, JAK/STAT inhibitors Tofacitinib and AG490, as well as upon STAT3 gene silencing. Conclusion: Adipocytes secretome plays a key role in the paracrine regulation of TNBC cells invasive phenotype. Dietary catechin-mediated interventions may, in part through the inhibition of adipogenesis and modulation of adipocytes secretome, prevent the onset of an obesogenic environment that favors TNBC development. Citation Format: Narjara Gonzalez Suarez, Sahily Rodriguez Torres, Borhane Annabi. EGCG targeting of adipogenesis reveals a STAT3-mediated paracrine oncogenic control of triple-negative breast cancer cell invasive phenotype [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr 2562.
摘要:EGCG靶向脂肪形成揭示了stat3介导的旁分泌致癌控制三阴性乳腺癌细胞侵袭性表型
背景:肥胖受试者发生三阴性乳腺癌(TNBC)的风险增加,部分与慢性低度炎症状态有关。另一方面,流行病学数据表明,多吃富含多酚的水果和蔬菜对降低某些癌症的发病率起着关键作用。目的:在这里,我们测试了绿茶衍生的没食子儿茶素-3-没食子酸酯(EGCG)是否可以改变参与前脂肪细胞成熟的脂肪形成,以及这如何影响成熟脂肪细胞分泌组对TNBC侵袭性表型的旁分泌调节。方法:对前脂肪细胞和成熟脂肪细胞进行分化和条件培养基(CM)。使用exCELLigence系统进行人tnbc衍生的MDA-MB-231实时细胞迁移。采用差异基因阵列和RT-qPCR技术评估基因表达水平。Western blotting检测蛋白表达水平。用Matrigel评估体外血管生成模拟(VM)。结果:EGCG可抑制多种关键脂肪生成生物标志物的诱导,包括脂蛋白脂肪酶、脂联素、瘦素、脂肪酸合成酶和脂肪酸结合蛋白4。成熟脂肪细胞分泌组增加了MDA-MB-231趋化性和VM,这与STAT3信号通路的诱导有关。EGCG、JAK/STAT抑制剂Tofacitinib和AG490以及STAT3基因沉默可以阻止这种侵袭性表型。结论:脂肪细胞分泌组在旁分泌调节TNBC细胞侵袭表型中起关键作用。饮食儿茶素介导的干预可能部分通过抑制脂肪生成和调节脂肪细胞分泌组来防止有利于TNBC发展的致肥环境的发生。引文格式:Narjara Gonzalez Suarez, Sahily Rodriguez Torres, Borhane Annabi。EGCG靶向脂肪生成揭示了stat3介导的旁分泌致癌控制三阴性乳腺癌细胞侵袭表型[摘要]。见:美国癌症研究协会2021年年会论文集;2021年4月10日至15日和5月17日至21日。费城(PA): AACR;癌症杂志,2021;81(13 -增刊):2562。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信