Cited by 74Prostate Cancer Treatment and ResearchCytokine Signaling Pathways and InteractionsProstate Cancer Diagnosis and Treatment

aPKCλ/ι promotes growth of prostate cancer cells in an autocrine manner through transcriptional activation of interleukin-6

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Ishiguro, Hitoshi, Akimoto, Kazunori, Nagashima, Yoji, Kojima, Yasuyuki, Sasaki, Takeshi, Ishiguro-Imagawa, Yukari, Nakaigawa, Noboru, Ohno, Shigeo +2 more·2009·Proceedings of the National Academy of Sciences

Abstract

Understanding the mechanism by which hormone refractory prostate cancer (HRPC) develops remains a major issue. Alterations in HRPC include androgen receptor (AR) changes. In addition, the AR is activated by cytokines such as interleukin-6 (IL-6). Atypical protein kinase C (aPKClambda/iota) has been implicated in the progression of several cancers. Herein, we provide evidence that aPKClambda/iota expression correlates with prostate cancer recurrence. Experiments in vitro and in vivo revealed aPKClambda/iota to be involved in prostate cancer cell growth through secretion of IL-6. Further, aPKClambda/iota activates transcription of the IL-6 gene through NFkappaB and AP-1. We conclude that aPKClambda/iota promotes the growth of hormone independent prostate cancer cells by stimulating IL-6 production in an autocrine manner. Our findings not only explain the link between aPKClambda/iota and IL-6, implicated in the progression a variety of cancers, but also establish a molecular change involved in the development of HRPC. Further, aPKClambda/iota expression might be a biomarker for prostate cancer progression.

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  1. [41]Huang C, et al. Inhibition of atypical PKC blocks ultraviolet-induced AP-1 activation by specifically inhibiting ERKs activation. Mol Carcinog. 2001;27:65–75. [PubMed] [Google Scholar]

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Authors
Ishiguro, H., Akimoto, K., Nagashima, Y., Kojima, Y., Sasaki, T., Ishiguro-Imagawa, Y., Nakaigawa, N., Ohno, S., Kubota, Y., & Uemura, H.
Affiliations
  • Kanagawa Academy of Science and Technology (JP)
  • Molecular Biology,
  • Advanced Medical Research Center, Yokohama City University (JP)
  • Yokohama City University (JP)
  • Yokohama City University Medical Center (JP)
Venue
Proceedings of the National Academy of Sciences
Published
2009-09-22
Volume
106
Issue
38
Pages
16369-16374
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2136199719
Cited by
74
References
56
Citations by year
2026: 1 · 2024: 3 · 2023: 2 · 2022: 1 · 2021: 4 · 2020: 3 · 2019: 4 · 2018: 9 · 2017: 5 · 2016: 4 · 2015: 4 · 2014: 3 · 2013: 10 · 2012: 7
FWCI
5.89
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Prostate Cancer Treatment and Research
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Prostate Cancer Diagnosis and Treatment
Keywords
atypical protein kinase C, prostate cancer, castration-resistant prostate cancer, interleukin-6, autocrine signaling, androgen receptor, NF-κB, AP-1, prostate cancer recurrence, tumor cell proliferation, biomarkers
MeSH terms
Protein Kinase C-lambda, Aged, Enzyme-Linked Immunosorbent Assay, Humans, Immunohistochemistry, Isoenzymes, Male, Neoplasm Recurrence, Local, Prostatic Neoplasms, Protein Kinase C, Blotting, Western, Transcriptional Activation, Interleukin-6, Gene Expression Regulation, Neoplastic, NF-kappa B, Disease Progression, Transcription Factor AP-1, Autocrine Communication, Reverse Transcriptase Polymerase Chain Reaction, RNA Interference, Cell Line, Tumor, Cell Proliferation, Kaplan-Meier Estimate

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