Cited by 131FOXO transcription factor regulationProstate Cancer Treatment and ResearchPI3K/AKT/mTOR signaling in cancer

Induction of Androgen Receptor Expression by Phosphatidylinositol 3-Kinase/Akt Downstream Substrate, FOXO3a, and Their Roles in Apoptosis of LNCaP Prostate Cancer Cells

Open access
Yang, Lin, Xie, Shaozhen, Jamaluddin, Md. Saha, Altuwaijri, Saleh, Ni, Jing, Kim, Eungseok, Chen, Yei-Tsung, Hu, Yueh-Chiang +4 more·2005·Journal of Biological Chemistry

Abstract

The phosphatidylinositol 3-kinase (PI3K)/Akt pathway plays important roles for prostate cancer cell survival, and the androgen receptor (AR) plays essential roles for prostate cancer cell proliferation. How these two signals cooperate to control cell growth and death, however, remains unclear and debated. Here we provide the first linkage by the identification of Forkhead transcription factor FOXO3a, the PI3K/Akt downstream substrate, as a positive regulator for the induction of AR gene expression. Both Western blot and real time PCR assays demonstrate that FOXO3a can induce AR expression at the protein and mRNA levels, and gel shift and chromatin immunoprecipitation assays further demonstrate that FOXO3a can induce 5' AR promoter activity via binding to the consensus DNA-binding sequence in the AR 5' promoter -1290 to -1297 (5'-TTGTTTCA-3'). Under normal growth conditions, blocking PI3K/Akt signals by LY294002 causes LNCaP cell arrest in G1 phase rather than apoptosis. However, further blocking of AR functions by AR small interfering RNA leads to dramatic LNCaP cell death, suggesting that AR may play important protective roles when the PI3K/Akt signal pathway is blocked by LY294002. Together, our data provide the first model to explain how PI3K/Akt and AR can cooperate to control LNCaP cell growth and death under normal conditions.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1074/jbc.m504461200

Cites

43 of 43 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

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?

  • Both FOXO3a and GSK-3β modulate transcription of androgen receptor; FOXO3a promotes transcriptional activity of AR, while GSK-3β acts as its inhibitor.

    “Moreover, both FOXO3a and GSK-3β modulate transcription of androgen receptor (AR); while the former promotes transcriptional activity of AR (49), the latter acts as its inhibitor (50).”

    From Anabolic effect of plant brassinosteroid (2011) · cites this paper as [49]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. Birkenkamp, K. U., and Coffer, P. J. (2003) Biochem. Soc. Trans. 31, 292-297
  2. Lin, H. K., Yeh, S., Kang, H. Y., and Chang, C. (2001) Proc. Natl. Acad. Sci. U. S. A. 98, 7200 -7205

Cited by

Sorted by citations

Authors
Yang, L., Xie, S., Jamaluddin, M. S., Altuwaijri, S., Ni, J., Kim, E., Chen, Y.-T., Hu, Y.-C., Wang, L., Chuang, K.-H., Wu, C.-T., & Chang, C.
Affiliations
  • The University of Texas MD Anderson Cancer Center (US)
  • University of Rochester Medicine (US)
  • Baylor College of Medicine (US)
  • Chang Gung University (TW)
Corresponding author
Chang, Chawnshang
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2005-09
Volume
280
Issue
39
Pages
33558-33565
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2158889317
Cited by
131
References
42
Citations by year
2025: 1 · 2024: 5 · 2023: 5 · 2022: 3 · 2021: 3 · 2020: 4 · 2019: 5 · 2018: 6 · 2017: 5 · 2016: 4 · 2015: 9 · 2014: 6 · 2013: 5 · 2012: 8
FWCI
3.64
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r29ca071870-05)
  • National Cancer Institute (CA55639, CA-71870)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK 60948, R01DK067686, DK67686, R01DK060948)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › FOXO transcription factor regulation
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Prostate Cancer Treatment and Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
Keywords
androgen receptor, FOXO3, PI3K/Akt signaling, prostate cancer, apoptosis, LNCaP cells, transcriptional regulation, G1 cell cycle arrest, LY294002
MeSH terms
Forkhead Box Protein O3, Phosphoinositide-3 Kinase Inhibitors, Chromones, Enzyme Inhibitors, Humans, Male, Models, Biological, Morpholines, Promoter Regions, Genetic, Prostatic Neoplasms, Receptors, Androgen, RNA, Messenger, Gene Expression Regulation, Neoplastic, Apoptosis, Prostate-Specific Antigen, Phosphatidylinositol 3-Kinases, RNA, Small Interfering, Cell Line, Tumor, Chromatin Immunoprecipitation, Forkhead Transcription Factors, Androgen Receptor Antagonists

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