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Prostate. 2006 Sep 15;66(13):1399-406.

Immunohistochemical characterization of neuroendocrine cells in prostate cancer.

Author information

  • 1Department of Pathology, University of Rochester Medical Center, Rochester, New York 14642, USA. Jiaoti_Huang@urmc.rochester.edu

Abstract

BACKGROUND:

Neuroendocrine (NE) cells increase in high grade/stage prostate cancer (PC) and may contribute to androgen-independent cancer. Their immunohistochemical phenotype has not been studied in detail and conflicting results have been reported.

METHODS:

PC tissue was stained immunohistochemically for luminal secretory cell-associated cytokeratin, basal cell markers, ki-67, androgen receptor (AR), PSA, prostate acid phosphatase (PAP), and alpha-methylacyl coenzyme A racemase (AMACR).

RESULTS:

The NE cells are positive for AE1/AE3, Cam 5.2, and negative for basal cell markers. They are negative for AR, PSA, and Ki-67 but positive for PAP. The benign NE cells are negative for AMACR while the malignant NE cells are positive for AMACR.

CONCLUSIONS:

NE cells of PC constitute a unique subset of cancer cells, which have a unique immunohistochemical profile. They do not express AR, consistent with their resistance to hormonal therapy. They are post-mitotic cells but are malignant and part of the tumor.

PMID:
16865726
[PubMed - indexed for MEDLINE]
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