Cited by 143Prostate Cancer Treatment and ResearchChemokine receptors and signalingSperm and Testicular Function

Interleukin-8 signaling promotes androgen-independent proliferation of prostate cancer cells via induction of androgen receptor expression and activation.

Seaton, A., Scullin, P., Maxwell, P. J., Wilson, C., Pettigrew, J., Gallagher, R., O'Sullivan, J. M., Johnston, P. G. +1 more·2008·Carcinogenesis

Abstract

The aim of our study was to assess the importance of the CXC chemokine and interleukin (IL)-8 in promoting the transition of prostate cancer (CaP) to the androgen-independent state. Stimulation of the androgen-dependent cell lines, LNCaP and 22Rv1, with exogenous recombinant human interleukin-8 (rh-IL-8) increased androgen receptor (AR) gene expression at the messenger RNA (mRNA) and protein level, assessed by quantitative polymerase chain reaction and immunoblotting, respectively. Using an androgen response element-luciferase construct, we demonstrated that rh-IL-8 treatment also resulted in increased AR transcriptional activity in both these cell lines, and a subsequent upregulation of prostate-specific antigen and cyclin-dependent kinase 2 mRNA transcript levels in LNCaP cells. Blockade of CXC chemokine receptor-2 signaling using a small molecule antagonist (AZ10397767) attenuated the IL-8-induced increases in AR expression and transcriptional activity. Furthermore, in 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assays, coadministration of AZ10397767 reduced the viability of LNCaP and 22Rv1 cells exposed to bicalutamide. Our data show that IL-8 signaling increases AR expression and promotes ligand-independent activation of this receptor in two androgen-dependent cell lines, describing two mechanisms by which this chemokine may assist in promoting the transition of CaP to the androgen-independent state. In addition, our data show that IL-8-promoted regulation of the AR attenuates the effectiveness of the AR antagonist bicalutamide in reducing CaP cell viability.

Integrity signals

Registry

Crossref · 10.1093/carcin/bgn109

Cites

47 of 47 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Treatment of androgen-dependent LNCaP and CR 22Rv1 cells with recombinant IL-8 in the absence of serum results in cell growth in the absence and presence of androgen, concomitant with increased PSA mRNA expression.

    “Treatment of androgen-dependent LNCaP and CR 22Rv1 cells with recombinant IL-8 in the absence of serum resulted in cell growth in the absence and presence of androgen, concomitant with increased PSA mRNA expression (30).”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Seaton, A., Scullin, P., Maxwell, P. J., Wilson, C., Pettigrew, J., Gallagher, R., O'Sullivan, J. M., Johnston, P. G., & Waugh, D. J. J.
Affiliations
Queen's University Belfast (GB)
Corresponding author
Waugh, D. J. J.
Venue
Carcinogenesis
Published
2008-04-15
Volume
29
Issue
6
Pages
1148-1156
ISSN
  • 0143-3334 (ISSN-L)
  • 1460-2180
OpenAlex
W2123910382
Cited by
143
References
47
Citations by year
2026: 1 · 2025: 3 · 2024: 6 · 2023: 2 · 2022: 3 · 2021: 8 · 2020: 8 · 2019: 9 · 2018: 6 · 2017: 11 · 2016: 5 · 2015: 12 · 2014: 6 · 2013: 20 · 2012: 14
FWCI
8.87
Type
journal article
Language
en
Open access
closed
Locations
  • Carcinogenesis (publishedVersion)
  • PubMed (publishedVersion)
  • Research Portal (Queen's University Belfast) (submittedVersion)
Funders
  • AstraZeneca
  • Baylor University
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Prostate Cancer Treatment and Research
  • Health Sciences › Medicine › Oncology › Chemokine receptors and signaling
  • Health Sciences › Medicine › Reproductive Medicine › Sperm and Testicular Function
Keywords
interleukin-8, prostate cancer, androgen receptor, bicalutamide resistance, ligand-independent receptor activation, prostate-specific antigen, CDK2, LNCaP cells, 22Rv1 cells
MeSH terms
Androgen Antagonists, Anilides, Flow Cytometry, Humans, Male, Nitriles, Prostatic Neoplasms, Receptors, Androgen, Tosyl Compounds, Transfection, Blotting, Western, Signal Transduction, Interleukin-8, Antineoplastic Agents, Hormonal, Drug Resistance, Neoplasm, Reverse Transcriptase Polymerase Chain Reaction, Receptors, Interleukin-8B, RNA, Small Interfering, Cell Line, Tumor, Cell Proliferation

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review