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Three-dimensional Alginate-bead Culture of Human Pituitary Adenoma Cells
08:31

Three-dimensional Alginate-bead Culture of Human Pituitary Adenoma Cells

Published on: February 18, 2016

RGD-FasL induces apoptosis of pituitary adenoma cells

Lukui Chen1, Guohong Zhuang, Wenzhu Li

  • 1Department of Neurosurgery, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, China. neuro_clk@hotmail.com

Cellular & Molecular Immunology
|March 6, 2008
PubMed

Insights

RGD-FasL demonstrates cytotoxic effects on pituitary adenoma cells by inducing apoptosis through caspase activation. This suggests RGD-FasL as a potential novel therapeutic for pituitary adenomas.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Pituitary adenomas are common tumors.
  • Targeted therapies are needed for pituitary adenoma treatment.
  • Fas ligand (FasL) and its receptor Fas are involved in apoptosis.

Purpose of the Study:

  • To investigate the cytotoxic effects of RGD-FasL on pituitary adenoma cell lines (GH3/MMQ/AtT20).
  • To elucidate the underlying molecular mechanisms of RGD-FasL-induced cytotoxicity.

Main Methods:

  • Reverse transcription-polymerase chain reaction (RT-PCR) for Fas/DcR3 mRNA.
  • Flow cytometry for surface protein expression and cell cycle analysis.
  • MTT assay for cytotoxicity and agarose gel electrophoresis for apoptosis.
  • Western blotting for apoptosis-related proteins (caspases, Bcl-2, RANKL, JNK2).

Main Results:

  • RGD-FasL exhibited dose-dependent cytotoxicity against pituitary adenoma cell lines.
  • MMQ and AtT20 cells showed sensitivity to RGD-FasL similar to FasL, while GH3 cells were less sensitive.
  • RGD-FasL induced cell cycle arrest and apoptosis.
  • Increased expression of caspase-8/9/3, RANKL, and JNK2, with decreased Bcl-2 expression, indicated caspase-dependent apoptosis.

Conclusions:

  • RGD-FasL induces apoptosis in pituitary adenoma cells via caspase activation.
  • RGD-FasL shows promise as a novel therapeutic candidate for pituitary adenomas.

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