Evidence map›Paper›PMID 19465883›Full record

ArticlePancreas2009

Growth of human pancreatic cancer is inhibited by down-regulation of gastrin gene expression.

Gail L Matters, John F Harms, Christopher O McGovern, Calpurnia Jayakumar, Keisha Crepin, Zachary P Smith, Melissa C Nelson, Heather Stock, Craig W Fenn, James Kaiser and 2 more

Abstract read
In one paragraph

Article in Pancreas, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 14% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Target-Specific Nanoparticle Polyplex Down-Regulates MutantInternational journal of molecular sciences · 2023
    Article
  4. Article
  5. Review
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  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Cholecystokinin and pancreatic cancer: the chicken or the egg?American journal of physiology. Gastrointestinal and liver physiology · 2014
    Review
  15. Review
  16. Review
  17. Article
  18. Downregulation of the CCK-B receptor in pancreatic cancer cells blocks proliferation and promotes apoptosis.American journal of physiology. Gastrointestinal and liver physiology · 2012
    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

12 authors at 2 institutions in 1 country.

Gail L MattersDepartment of Biochemistry and Molecular Biology, Pennsylvania State University College of Medicine, Hershey, PA 17011, USA.
John F Harms
Christopher O McGovern
Calpurnia Jayakumar
Keisha Crepin
Zachary P Smith
Melissa C Nelson
Heather Stock
Craig W Fenn
James Kaiser
Mark Kester
Jill P Smith
Pennsylvania State University · USMessiah College · US

Funding

Promoting diversity in research careers in diabetes, digestive and kidney diseasesR25DK078381 · NIDDK · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI MATTERS, GAIL L., REEVES, WILLIAM BRIAN · 2007 to 2024
$4.6M
Effects of silencing RNAs for gastrin and CCK on human pancreatic cancerR21CA125445 · NCI · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI SMITH, JILL P · 2007 to 2008
$322k
NCI NIH HHS CA125445NCI NIH HHS R21 CA125445NIDDK NIH HHS R25 DK078381
6 · The paper itself

Abstract

objectivesThis study evaluated the effects of gastrin messenger RNA (mRNA) down-regulation on growth of human pancreatic cancer.

methodsGastrin expression was examined in human pancreatic cancer cell lines by reverse transcriptase-polymerase chain reaction, and peptide expression was assessed by immunocytochemistry. Gastrin was down-regulated using either stable transfection of an antisense gastrin cDNA or 1 of 3 shRNA (short hairpin RNA) constructs. Tumor formation was evaluated after either subcutaneous or orthotopic injections into nude mice. The effect of nanoliposomes loaded with gastrin siRNA (small interfering RNA) was tested in mice bearing pancreatic tumors.

resultsStable transfection of gastrin antisense or shRNAs into BxPC-3 cells resulted in clones with more than 90% reduction in gastrin mRNA. Tumor growth rate and incidence of metastases in both wild-type and transfected pancreatic cancer cells were directly proportional to the degrees of gastrin mRNA expression. Immunofluorescence analysis confirmed that gastrin peptide levels were decreased in antisense and shRNA tumors. Gastrin knockdown clones had lower Ki-67 and increased cleaved caspase-3 staining, consistent with known effects of gastrin on proliferation and apoptosis. Tumors in mice treated with gastrin siRNA were smaller than controls.

conclusionsThese results suggest that RNAi targeting of gastrin could serve as an effective treatment for pancreatic cancer.

Indexed as

Cell ProliferationRNA InterferenceAnimalsCell Line, TumorChromatography, High Pressure LiquidFluorescent Antibody TechniqueGastrinsHumansKi-67 AntigenLiposomesMass SpectrometryMiceMice, NudeNanotechnologyPancreatic NeoplasmsReverse Transcriptase Polymerase Chain ReactionGastrinsKi-67 AntigenLiposomesRNA, MessengerRNA, Small Interfering

Identifiers

PMID19465883
PMCPMC2704379
OpenAlexW2076100133

What OpenQuestion holds

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LicenceTDM
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.