首页> 外文期刊>Cellular Physiology and Biochemistry >Interleukin-6 Increases Expression and Secretion of Cathepsin B by Breast Tumor-Associated Monocytes
【24h】

Interleukin-6 Increases Expression and Secretion of Cathepsin B by Breast Tumor-Associated Monocytes

机译:白细胞介素6增加与乳腺癌相关的单核细胞组织蛋白酶B的表达和分泌。

获取原文
获取原文并翻译 | 示例
           

摘要

In the tumor microenvironment, monocytes respond to paracrine stimuli from breast cancer cells by secreting molecules that participate in breast cancer growth, invasion, intravasation and metastasis. Here we examined the effects of media conditioned by MDA-MB-231 human breast carcinoma cells (231-CM) on expression and secretion of proteases and secretion of cytokines by U937 human monocytes. We found that 231-CM increased U937: 1) proliferation; 2) expression, activity and secretion of the cysteine protease cathepsin B (CTSB); 3) secretion of matrix metalloproteinases (MMP)-2 and -9; and 4) secretion of interleukin-6 (IL-6) and insulin-like growth factor binding protein-1 (IGFBP-1). We further demonstrated by western blotting and enzymatic activity assays that the increases in CTSB secretion and activity induced by 231-CM could be reduced by neutralizing antibodies against IL-6. Our data suggest a role for IL-6 in increased monocyte expression and secretion of CTSB in response to soluble factors secreted by breast cancer cells. 1 [Mohamed, Mona Mostafa] Cairo Univ, Dept Zool, Fac Sci, Giza, Egypt. [Cavallo-Medved, Dora; Rudy, Deborah; Anbalagan, Arulselvi; Moin, Kamiar; Sloane, Bonnie F.] Wayne State Univ, Dept Pharmacol, Detroit, MI 48201 USA. [Cavallo-Medved, Dora; Moin, Kamiar; Sloane, Bonnie F.] Wayne State Univ, Barbara Ann Karmanos Canc Inst, Detroit, MI 48201 USA.
机译:在肿瘤的微环境中,单核细胞通过分泌参与乳腺癌生长,浸润,浸润和转移的分子来响应乳腺癌细胞的旁分泌刺激。在这里,我们研究了由MDA-MB-231人乳腺癌细胞(231-CM)调节的培养基对U937人单核细胞蛋白酶表达和分泌以及细胞因子分泌的影响。我们发现231-CM增加了U937:1)增殖; 2)半胱氨酸蛋白酶组织蛋白酶B(CTSB)的表达,活性和分泌; 3)分泌基质金属蛋白酶(MMP)-2和-9; 4)白细胞介素6(IL-6)和胰岛素样生长因子结合蛋白-1(IGFBP-1)的分泌。我们通过蛋白质印迹和酶促活性分析进一步证明,通过中和针对IL-6的抗体可以减少231-CM诱导的CTSB分泌和活性增加。我们的数据表明,IL-6在对乳腺癌细胞分泌的可溶性因子的响应中,在单核细胞表达增加和CTSB分泌中发挥作用。 1 [穆罕默德(Mohamed),蒙娜·莫斯塔法(Mona Mostafa)]开罗大学,教区动物学部,Fac Sci,吉萨,埃及。 [多拉卡瓦洛梅德韦德;鲁迪·黛博拉;阿鲁巴拉维(Anulaganvi)卡米尔(Moami,Kamiar);斯隆(Bonnie F.)。韦恩州立大学,药房部,底特律,美国密歇根州48201。 [多拉卡瓦洛梅德韦德;卡米尔(Moami,Kamiar);斯隆,邦妮·F。]韦恩州立大学,芭芭拉·安·卡曼诺斯·坎斯特学院,底特律,美国密歇根州48201。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号