Evidence map›Paper›PMID 31590218›Full record

ArticleInternational journal of molecular sciences2019

Conditional Knockdown of Osteopontin Inhibits Breast Cancer Skeletal Metastasis.

Marineta Kovacheva, Michael Zepp, Muriel Schraad, Stefan Berger, Martin R Berger

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

17 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Mechanoimmunological Control of Metastatic Site Selection.bioRxiv : the preprint server for biology · 2025
    Article
  3. Review
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Breast Cancer and Microcalcifications: An Osteoimmunological Disorder?International journal of molecular sciences · 2020
    Review
  16. Article
  17. Ethyl Acetate Fraction fromEvidence-based complementary and alternative medicine : eCAM · 2020
    Article
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

5 authors at 3 institutions in 1 country.

Marineta KovachevaGerman Cancer Research Center (DKFZ), Toxicology and Chemotherapy Unit, 69120 Heidelberg, Germany. m.kovacheva@dkfz.de.
Michael ZeppGerman Cancer Research Center (DKFZ), Toxicology and Chemotherapy Unit, 69120 Heidelberg, Germany. m.zepp@dkftz.de.
Muriel SchraadGerman Cancer Research Center (DKFZ), Toxicology and Chemotherapy Unit, 69120 Heidelberg, Germany. muriel.schraad@googlemail.com.
Stefan BergerCentral Institute of Mental Health, Department of Molecular Biology, 68159 Mannheim, Germany. zebiraf@gmail.com.
Martin R BergerGerman Cancer Research Center (DKFZ), Toxicology and Chemotherapy Unit, 69120 Heidelberg, Germany. m.berger@dkfz.de.
German Cancer Research Center · DEHeidelberg University · DECentral Institute of Mental Health · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

High osteopontin (OPN) expression is linked to breast cancer bone metastasis. In this study we modulated osteopontin levels conditionally and investigated any related antineoplastic effects. Therefore, we established cell clones from human breast cancer MDA-MB-231 cells, in which the expression of OPN is regulated by the Tet-Off tet-off system. These cells, which conditionally express a specific miRNA targeting OPN, were used for in vitro studies as well as for a bone metastasis model in nude rats. Changes in whole-genome expression elicited by conditional OPN knockdown and vesicle formation were also analyzed. The alkylphosphocholine erufosine was used for combination therapy. Conditional OPN knockdown caused mild anti-proliferative, but more intensive anti-migratory and anti clonogenic effects, as well as partial and complete remissions of soft tissue and osteolytic lesions. These effects were associated with specific gene and protein expression modulations following miRNA-mediated OPN knockdown. Furthermore, high levels of OPN were detected in vesicles derived from rats harboring breast cancer skeletal metastases. Finally, the combination of OPN inhibition and erufosine treatment caused an additive reduction of OPN levels in the investigated breast cancer cells. Thus, knockdown of OPN alone or in combination with erufosine is a promising strategy in breast cancer skeletal metastasis treatment.

Indexed as

AnimalsAntineoplastic AgentsBone NeoplasmsBreast NeoplasmsCell Line, TumorCell MovementCell ProliferationFemaleGene Knockdown TechniquesHumansOrganophosphatesOsteopontinQuaternary Ammonium CompoundsRatsRats, NudeRNAi TherapeuticsAntineoplastic Agentserucylphospho-N,N,N-trimethylpropylammoniumOrganophosphatesOsteopontinQuaternary Ammonium Compoundsconditional osteopontin knockdownerufosineMDA-MB-231 human breast cancer cellsskeletal metastasistet-off system

Identifiers

PMID31590218
PMCPMC6801824
OpenAlexW2978945492

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.