Evidence map›Paper›PMID 12090471›Full record

ArticleClinical & experimental metastasis2002

Quantitative determination of tumor cell intravasation in a real-time polymerase chain reaction-based assay.

Emilia Mira, Rosa Ana Lacalle, Concepción Gómez-Moutón, Esther Leonardo, Santos Mañes

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Clinical & experimental metastasis, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
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

22 citing papers in PubMed.

  1. Review
  2. Review
  3. Review
  4. Frontiers in immunology · 2022
    Review
  5. Review
  6. Review
  7. Article
  8. The CAM Assay as an Alternative In Vivo Model for Drug Testing.Handbook of experimental pharmacology · 2021
    Article
  9. Pre-clinical Models of Metastasis in Pancreatic Cancer.Frontiers in cell and developmental biology · 2021
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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.

Emilia MiraDepartment of Immunology and Oncology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Madrid, Spain. emira@cnb.uam.es
Rosa Ana Lacalle
Concepción Gómez-Moutón
Esther Leonardo
Santos Mañes

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tumor cells acquire the ability to enter blood vessels surrounding the primary tumor, endowing them with the capacity to disseminate and become established in distant sites, originating a metastasis. Determination of the intravasation ability of tumor cells is thus important, as it can be correlated with their potential malignancy. To analyze the intravasation phenotype of human tumor cells in vivo, we performed chick embryo chorioallantoic membrane (CAM) assays. Cells were inoculated on the CAM of 9-day-old chick embryos and the membrane at the opposite side of the egg was recovered after 48 h incubation. To measure intravasation ability, we calculated the amount of human DNA in each CAM sample by real-time PCR of Alu sequences and SYBR Green 1 fluorescence detection. This analysis showed a detection limit of 1 human cell per 10(5) total cells, and we were able to distinguish between tumor cells of distinct invasive capacity. This assay has several advantages over current methods to measure intravasation ability, including the elimination of post-PCR analysis, sensitivity and easy scale-up of sample numbers.

Indexed as

Neoplasm InvasivenessOrganic ChemicalsAdenocarcinomaAllantoisAlu ElementsAnimalsBenzothiazolesBreast NeoplasmsChick EmbryoChorionComputer SystemsDiaminesDNA, NeoplasmEthidiumFibroblastsFluorescent DyesBenzothiazolesDiaminesDNA, NeoplasmEthidiumFluorescent DyesOrganic ChemicalsQuinolinesSYBR Green I

Identifiers

What OpenQuestion holds

Textmetadata
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.