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Related Experiment Videos

Neuroendocrine differentiation in human prostatic tumor models

M A Noordzij1, W M van Weerden, C M de Ridder

  • 1Department of Urology, Erasmus University, Rotterdam, The Netherlands.

The American Journal of Pathology
|September 1, 1996
PubMed
Summary

New experimental models reveal neuroendocrine (NE) cells in prostate cancer. Androgen withdrawal rapidly increases NE cell numbers, suggesting NE differentiation, not proliferation, is key.

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Area of Science:

  • Urology
  • Oncology
  • Cell Biology

Background:

  • Neuroendocrine (NE) cells are present in prostate epithelia but poorly understood.
  • Lack of suitable experimental models hinders research into NE cell regulation and function.

Purpose of the Study:

  • To evaluate novel in vitro and in vivo prostate cancer models for NE cell presence.
  • To investigate the impact of hormonal conditions on NE cell phenotype and dynamics.

Main Methods:

  • Immunohistochemistry was used to detect NE cells in 15 prostate cancer models.
  • Transmission electron microscopy and Western analysis confirmed NE features.
  • Androgen withdrawal experiments assessed NE cell response to hormonal changes.

Main Results:

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  • In vitro models lacked NE cells; 5/7 xenograft models contained NE cells.
  • NE cells in PC-295 and PC-310 xenografts showed a stable phenotype.
  • Androgen withdrawal rapidly increased NE cell numbers, indicating induced differentiation.

Conclusions:

  • Established xenograft models (PC-295, PC-310) are suitable for studying NE cells in prostate cancer.
  • These models facilitate research into the presence and function of NE cells.
  • NE cells in prostate cancer are post-mitotic and do not express androgen receptors.