PAC1-R null isoform expression in human prostate cancer tissue

Caterina Mammi, Giovanni V. Frajese, Giuseppe Vespasiani, Stefania Mariani, Lucio Gnessi, Donatella Farini, Andrea Fabbri, Gaetano Frajese, Costanzo Moretti

Research output: Contribution to journalArticle

Abstract

BACKGROUND. PACAP is a member of the VIP/GHRH family of neuropeptides and has important effects on prostate cell proliferation. Here we analyze the expression and localization of PACAP and its specific receptor variants (PAC1-R) in tissues collected from patients undergoing prostate biopsy and surgery for benign prostatic hyperplasia (BPH) and prostate cancer (PCa). METHODS. Reverse transcriptase (RT)-polymerase chain reaction (PCR), DNA sequencing, and immunohistochemistry. RESULTS. PACAP and PAC1-R were localized by immunohistochemistry in the prostate tissue. While in healthy and BPH tissues PAC1-R positive staining is present in all the epithelial cells lining the lumen of the acini and in some stromal cells (mostly in the apical portion of the cells), in PCa tissues, anti-PAC1-R antibody stained the apical portion of the cells. We provide evidence that PAC 1-R null and SV1/SV2 variants are all present in normal and hyperplastic tissues, while in PCa tissue PAC1-R null is the most relevant receptor variant expressed. CONCLUSIONS. Our data demonstrates that the PAC1-R null variant is the most relevant isoform expressed in human PCa tissue being suggestively related with the events determining the outcome of prostate cancer.

Original languageEnglish
Pages (from-to)514-521
Number of pages8
JournalProstate
Volume66
Issue number5
DOIs
Publication statusPublished - Apr 1 2006

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Prostatic Neoplasms
Protein Isoforms
Pituitary Adenylate Cyclase-Activating Polypeptide
Prostate
Prostatic Hyperplasia
Receptors, Pituitary Adenylate Cyclase-Activating Polypeptide, Type I
Immunohistochemistry
Stromal Cells
Neuropeptides
Reverse Transcriptase Polymerase Chain Reaction
DNA Sequence Analysis
Epithelial Cells
Cell Proliferation
Staining and Labeling
Biopsy
Antibodies

Keywords

  • NE differentiation
  • PAC-R
  • PACAP
  • Prostate cancer
  • SV
  • SV

ASJC Scopus subject areas

  • Urology

Cite this

Mammi, C., Frajese, G. V., Vespasiani, G., Mariani, S., Gnessi, L., Farini, D., ... Moretti, C. (2006). PAC1-R null isoform expression in human prostate cancer tissue. Prostate, 66(5), 514-521. https://doi.org/10.1002/pros.20356

PAC1-R null isoform expression in human prostate cancer tissue. / Mammi, Caterina; Frajese, Giovanni V.; Vespasiani, Giuseppe; Mariani, Stefania; Gnessi, Lucio; Farini, Donatella; Fabbri, Andrea; Frajese, Gaetano; Moretti, Costanzo.

In: Prostate, Vol. 66, No. 5, 01.04.2006, p. 514-521.

Research output: Contribution to journalArticle

Mammi, C, Frajese, GV, Vespasiani, G, Mariani, S, Gnessi, L, Farini, D, Fabbri, A, Frajese, G & Moretti, C 2006, 'PAC1-R null isoform expression in human prostate cancer tissue', Prostate, vol. 66, no. 5, pp. 514-521. https://doi.org/10.1002/pros.20356
Mammi C, Frajese GV, Vespasiani G, Mariani S, Gnessi L, Farini D et al. PAC1-R null isoform expression in human prostate cancer tissue. Prostate. 2006 Apr 1;66(5):514-521. https://doi.org/10.1002/pros.20356
Mammi, Caterina ; Frajese, Giovanni V. ; Vespasiani, Giuseppe ; Mariani, Stefania ; Gnessi, Lucio ; Farini, Donatella ; Fabbri, Andrea ; Frajese, Gaetano ; Moretti, Costanzo. / PAC1-R null isoform expression in human prostate cancer tissue. In: Prostate. 2006 ; Vol. 66, No. 5. pp. 514-521.
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AB - BACKGROUND. PACAP is a member of the VIP/GHRH family of neuropeptides and has important effects on prostate cell proliferation. Here we analyze the expression and localization of PACAP and its specific receptor variants (PAC1-R) in tissues collected from patients undergoing prostate biopsy and surgery for benign prostatic hyperplasia (BPH) and prostate cancer (PCa). METHODS. Reverse transcriptase (RT)-polymerase chain reaction (PCR), DNA sequencing, and immunohistochemistry. RESULTS. PACAP and PAC1-R were localized by immunohistochemistry in the prostate tissue. While in healthy and BPH tissues PAC1-R positive staining is present in all the epithelial cells lining the lumen of the acini and in some stromal cells (mostly in the apical portion of the cells), in PCa tissues, anti-PAC1-R antibody stained the apical portion of the cells. We provide evidence that PAC 1-R null and SV1/SV2 variants are all present in normal and hyperplastic tissues, while in PCa tissue PAC1-R null is the most relevant receptor variant expressed. CONCLUSIONS. Our data demonstrates that the PAC1-R null variant is the most relevant isoform expressed in human PCa tissue being suggestively related with the events determining the outcome of prostate cancer.

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