Evidence map›Paper›PMID 21647815›Full record

ArticleClinical & experimental metastasis2011

The aldehyde dehydrogenase enzyme 7A1 is functionally involved in prostate cancer bone metastasis.

Christel van den Hoogen, Geertje van der Horst, Henry Cheung, Jeroen T Buijs, Rob C M Pelger, Gabri van der Pluijm

Open access · hybridAbstract read
In one paragraph

Article in Clinical & experimental metastasis, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed
4.2field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

65 citing papers in PubMed, 110 citations in OpenAlex.

  1. Article
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  6. LysineFrontiers in molecular neuroscience · 2025
    Review
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  10. ALDEFLUOR activity, ALDH isoforms, and their clinical significance in cancers.Journal of enzyme inhibition and medicinal chemistry · 2023
    Article
  11. Review
  12. Article
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  14. Review
  15. Article
  16. Article
  17. The impact ofAging · 2022
    Article
  18. Article
  19. Review
  20. Article

5 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Christel van den HoogenDepartment of Urology, Leiden University Medical Centre, The Netherlands.
Geertje van der Horst
Henry Cheung
Jeroen T Buijs
Rob C M Pelger
Gabri van der Pluijm
Leiden University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

High aldehyde dehydrogenase (ALDH) activity can be used to identify tumor-initiating and metastasis-initiating cells in various human carcinomas, including prostate cancer. To date, the functional importance of ALDH enzymes in prostate carcinogenesis, progression and metastasis has remained elusive. Previously we identified strong expression of ALDH7A1 in human prostate cancer cell lines, primary tumors and matched bone metastases. In this study, we evaluated whether ALDH7A1 is required for the acquisition of a metastatic stem/progenitor cell phenotype in human prostate cancer. Knockdown of ALDH7A1 expression resulted in a decrease of the α2(hi)/αv(hi)/CD44(+) stem/progenitor cell subpopulation in the human prostate cancer cell line PC-3M-Pro4. In addition, ALDH7A1 knockdown significantly inhibited the clonogenic and migratory ability of human prostate cancer cells in vitro. Furthermore, a number of genes/factors involved in migration, invasion and metastasis were affected including transcription factors (snail, snail2, and twist) and osteopontin, an ECM molecule involved in metastasis. Knockdown of ALDH7A1 resulted in decreased intra-bone growth and inhibited experimentally induced (bone) metastasis, while intra-prostatic growth was not affected. In line with these observations, evidence is presented that TGF-β, a key player in cancer invasiveness and bone metastasis, strongly induced ALDH activity while BMP7 (an antagonist of TGF-β signaling) down-regulated ALDH activity. Our findings show, for the first time, that the ALDH7A1 enzyme is functionally involved in the formation of bone metastases and that the effect appeared dependent on the microenvironment, i.e., bone versus prostate.

Indexed as

Aldehyde DehydrogenaseBone NeoplasmsCell Line, TumorDisease ProgressionEpithelial-Mesenchymal TransitionHumansMaleNeoplasm MetastasisProstatic NeoplasmsAldehyde DehydrogenaseALDH7A1 protein, human

Identifiers

PMID21647815
PMCPMC3198191
OpenAlexW2095034105

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.