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Genetic over-expression of cytokeratin 18 in bovine luteal cells: Effects on intermediate filament formation and Fas ligand-induced apoptosis.

机译:黄体细胞中细胞角蛋白18的基因过表达:对中间丝形成和Fas配体诱导的细胞凋亡的影响。

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摘要

The receptor Fas and its ligand, FasL, are implicated in apoptosis of luteal cells during regression of the corpus luteum (CL). In some cell types, cytokeratin (CK) 8/18 filaments impair FasL-induced apoptosis. Here, we determined if genetic over-expression of CK18 filaments in luteal cells similarly prevents FasL-induced apoptosis. Luteal cell cultures were prepared from early and late stage bovine CL (day 5 and days 16-18 post-ovulation, respectively). The cells were transduced with media, mock vector containing GFP, or a CK18-containing vector, and then exposed to a cytokine cocktail containing FasL for 24 hours. Transduction of luteal cells with CK18 vector resulted in CK18 aggregates rather than filaments. The aggregates did not affect surface expression of Fas or progesterone production. Moreover, the CK18 aggregates did not prevent FasL-induced apoptosis. Thus, while successful in transducing primary cultures of bovine luteal cells with CK18, aggregation of CK failed to prevent FasL-induced apoptosis.
机译:受体Fas及其配体FasL与黄体(CL)消退期间的黄体细胞凋亡有关。在某些细胞类型中,细胞角蛋白(CK)8/18细丝损害FasL诱导的细胞凋亡。在这里,我们确定黄体细胞中CK18细丝的基因过表达是否同样阻止FasL诱导的细胞凋亡。从早期和晚期牛CL(分别在排卵后第5天和第16-18天)制备黄体细胞培养物。用培养基,含有GFP的模拟载体或含有CK18的载体转导细胞,然后将其暴露于含有FasL的细胞因子混合物中24小时。用CK18载体转导黄体细胞导致CK18聚集而不是细丝。聚集体不影响Fas或孕激素产生的表面表达。此外,CK18聚集体不能阻止FasL诱导的细胞凋亡。因此,尽管成功地用CK18转导了牛黄体细胞的原代培养物,但CK的聚集未能阻止FasL诱导的细胞凋亡。

著录项

  • 作者

    Forcina, Jennifer J.;

  • 作者单位

    University of New Hampshire.;

  • 授予单位 University of New Hampshire.;
  • 学科 Animal sciences.;Cellular biology.
  • 学位 M.S.
  • 年度 2009
  • 页码 90 p.
  • 总页数 90
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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