Cited by 118Prostate Cancer Treatment and ResearchEstrogen and related hormone effectsSperm and Testicular Function

Receptor for activated C kinase 1 (RACK1) and Src regulate the tyrosine phosphorylation and function of the androgen receptor.

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Kraus, Sarah, Gioeli, Daniel, Vomastek, Tomas, Gordon, Vicki, Weber, Michael J.·2006·Cancer Research

Abstract

The androgen receptor (AR) remains functionally important in the development and progression of prostate cancer even when the disease seems androgen "independent." Because signal transduction by growth factor receptors increases in advanced prostate cancer and is capable of sensitizing the AR to androgen, there is considerable interest in determining the mechanisms by which signaling systems can modulate AR function. We show herein that the adaptor/scaffolding protein receptor for activated C kinase 1 (RACK1), which was previously reported to interact with the AR, modulates the tyrosine phosphorylation of AR and its interaction with the Src tyrosine kinase. We also show that down-regulation of RACK1 by short interfering RNA inhibits growth and stimulates prostate-specific antigen transcription in androgen-treated prostate cancer cells. Our results suggest that RACK1 mediates the cross-talk of AR with additional binding partners, such as Src, and facilitates the tyrosine phosphorylation and transcriptional activity of the AR.

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Crossref · 10.1158/0008-5472.can-06-0596

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  • The activity of Src on AR transactivation is modulated, at least in part, through its binding partner and associated scaffolding protein receptor for activated C kinase 1 (RACK1).

    “The activity of Src on AR transactivation is modulated, at least in part, through its binding partner and associated scaffolding protein receptor for activated C kinase 1 (RACK1) (43).”

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Authors
Kraus, S., Gioeli, D., Vomastek, T., Gordon, V., & Weber, M. J.
Affiliations
  • University of Virginia Health System (US)
  • Department of Microbiology and Cancer Center, University of Virginia Health System, Charlottesville, Virginia
Venue
Cancer Research
Published
2006-11-15
Volume
66
Issue
22
Pages
11047-11054
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W2142284564
Cited by
118
References
42
Citations by year
2026: 1 · 2025: 4 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 2 · 2020: 3 · 2019: 4 · 2018: 5 · 2017: 5 · 2016: 6 · 2015: 7 · 2014: 12 · 2013: 5 · 2012: 5
FWCI
7.95
Type
journal article
Language
en
Open access
Locations
  • Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Defense (W81XWH)
  • Prostate Cancer Foundation
  • National Institutes of Health (W81XWH)
  • National Cancer Institute (R01CA105402, P01CA104106)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Prostate Cancer Treatment and Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Health Sciences › Medicine › Reproductive Medicine › Sperm and Testicular Function
Keywords
androgen receptor, RACK1, Src kinase, tyrosine phosphorylation, prostate cancer, castration-resistant prostate cancer, adaptor proteins, signal transduction, growth factor receptor signaling, transcriptional activity
MeSH terms
Receptors for Activated C Kinase, Androgens, Animals, Chlorocebus aethiops, Humans, Male, Phosphorylation, Prostatic Neoplasms, Receptors, Androgen, Receptors, Cell Surface, Substrate Specificity, Signal Transduction, Disease Progression, src-Family Kinases, COS Cells

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