Cited by 178Cytokine Signaling Pathways and InteractionsProstate Cancer Treatment and ResearchCancer Cells and Metastasis

JAK-STAT blockade inhibits tumor initiation and clonogenic recovery of prostate cancer stem-like cells

Kroon, Paula, Berry, Paul A., Stower, Michael J., Rodrigues, Greta, Mann, Vincent M., Simms, Matthew, Bhasin, Deepak, Chettiar, Somsundaram +4 more·2013·Cancer Research

Published version of a preprint

Abstract

Interleukin (IL)-6 overexpression and constitutive STAT3 activation occur in many cancers, including prostate cancer. However, their contribution to prostate stem and progenitor cells has not been explored. In this study, we show that stem-like cells from patients with prostate cancer secrete higher levels of IL-6 than their counterparts in non-neoplastic prostate. Tumor grade did not influence the levels of expression or secretion. Stem-like and progenitor cells expressed the IL-6 receptor gp80 with concomitant expression of pSTAT3. Blockade of activated STAT3, by either anti-IL-6 antibody siltuximab (CNTO 328) or LLL12, a specific pSTAT3 inhibitor, suppressed the clonogenicity of the stem-like cells in patients with high-grade disease. In a murine xenograft model used to determine the in vivo effects of pSTAT3 suppression, LLL12 treatment effectively abolished outgrowth of a patient-derived castrate-resistant tumor. Our results indicate that the most primitive cells in prostate cancer require pSTAT3 for survival, rationalizing STAT3 as a therapeutic target to treat advanced prostate cancer. Cancer Res; 73(16); 5288–98. ©2013 AACR.

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Crossref · 10.1158/0008-5472.can-13-0874

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Authors
Kroon, P., Berry, P. A., Stower, M. J., Rodrigues, G., Mann, V. M., Simms, M., Bhasin, D., Chettiar, S., Li, C., Li, P.-K., Maitland, N. J., & Collins, A. T.
Affiliations
York Hospital (GB)
Venue
Cancer Research
Published
2013-08-13
Volume
73
Issue
16
Pages
5288-5298
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W2069303628
Cited by
175
References
49
Citations by year
2026: 8 · 2025: 4 · 2024: 10 · 2023: 13 · 2022: 13 · 2021: 12 · 2020: 10 · 2019: 13 · 2018: 13 · 2017: 15 · 2016: 19 · 2015: 26 · 2014: 18 · 2013: 1
FWCI
11.41
Type
journal article
Language
en
Open access
closed
Locations
  • Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Prostate Cancer UK (PG12-01)
Topics
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Prostate Cancer Treatment and Research
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
Keywords
prostate cancer, cancer stem-like cells, STAT3 activation, interleukin-6, siltuximab, tumor initiation, castration-resistant prostate cancer, therapeutic target
MeSH terms
Aged, Aged, 80 and over, Animals, Anthraquinones, Antibodies, Monoclonal, Humans, Male, Middle Aged, Sulfonamides, Neoplastic Stem Cells, Interleukin-6, Receptors, Interleukin-6, Cell Line, Tumor, STAT3 Transcription Factor, Mice, Janus Kinases, Prostatic Neoplasms, Castration-Resistant

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