Evidence map›Paper›PMID 15705887›Full record

ArticleCancer research2005

Folate transport gene inactivation in mice increases sensitivity to colon carcinogenesis.

David W L Ma, Richard H Finnell, Laurie A Davidson, Evelyn S Callaway, Ofer Spiegelstein, Jorge A Piedrahita, J Michael Salbaum, Claudia Kappen, Brad R Weeks, Jill James and 3 more

Open access · bronzeAbstract read
In one paragraph

Article in Cancer research, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
4.3field-weighted citation impact, top 6% 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

23 citing papers in PubMed, 54 citations in OpenAlex.

  1. Emerging roles for folate receptor FOLR1 in signaling and cancer.Trends in endocrinology and metabolism: TEM · 2022
    Review
  2. Review
  3. Altered folate binding protein expression and folate delivery are associated with congenital hydrocephalus in the hydrocephalic Texas rat.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2019
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  11. Genetic and epigenomic footprints of folate.Progress in molecular biology and translational science · 2012
    Review
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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

13 authors at 6 institutions in 2 countries.

David W L MaMolecular and Cell Biology Section, Faculty of Nutrition, Texas A&M University, Kleberg Center, College Station, TX 77843-2471, USA.
Richard H Finnell
Laurie A Davidson
Evelyn S Callaway
Ofer Spiegelstein
Jorge A Piedrahita
J Michael Salbaum
Claudia Kappen
Brad R Weeks
Jill James
Daniel Bozinov
Joanne R Lupton
Robert S Chapkin
Faculty of Public Health · GBMayo Clinic in Arizona · USTexas A&M University System · USNorth Carolina State University · USTexas A&M University · USUniversity of Arkansas for Medical Sciences · US

Funding

Pilot--Health Science ResearchP30ES009106 · NIEHS · TEXAS A&M UNIVERSITY SYSTEM · PI SAFE, STEPHEN H. · 1998 to 2006
$9.2M
Colonic Cytokinetics and Cell Signaling: Dietary EffectsR01CA059034 · NCI · TEXAS A&M UNIVERSITY SYSTEM · PI CHAPKIN, ROBERT STEPHEN · 1995 to 2012
$3.6M
NCI NIH HHS CA 59034NCI NIH HHS R01 CA059034NIEHS NIH HHS P30 ES009106NIEHS NIH HHS P30 ES 09106
6 · The paper itself

Abstract

Low dietary folate intake is associated with an increased risk for colon cancer; however, relevant genetic animal models are lacking. We therefore investigated the effect of targeted ablation of two folate transport genes, folate binding protein 1 (Folbp1) and reduced folate carrier 1 (RFC1), on folate homeostasis to elucidate the molecular mechanisms of folate action on colonocyte cell proliferation, gene expression, and colon carcinogenesis. Targeted deletion of Folbp1 (Folbp1(+/-) and Folbp1(-/-)) significantly reduced (P < 0.05) colonic Folbp1 mRNA, colonic mucosa, and plasma folate concentration. In contrast, subtle changes in folate homeostasis resulted from targeted deletion of RFC1 (RFC1(+/-)). These animals had reduced (P < 0.05) colonic RFC1 mRNA and exhibited a 2-fold reduction in the plasma S-adenosylmethionine/S-adenosylhomocysteine. Folbp1(+/-) and Folbp1(-/-) mice had larger crypts expressed as greater (P < 0.05) numbers of cells per crypt column relative to Folbp1(+/+) mice. Colonic cell proliferation was increased in RFC1(+/-) mice relative to RFC1(+/+) mice. Microarray analysis of colonic mucosa showed distinct changes in gene expression specific to Folbp1 or RFC1 ablation. The effect of folate transporter gene ablation on colon carcinogenesis was evaluated 8 and 38 weeks post-azoxymethane injection in wild-type and heterozygous mice. Relative to RFC1(+/+) mice, RFC1(+/-) mice developed increased (P < 0.05) numbers of aberrant crypt foci at 8 weeks. At 38 weeks, RFC1(+/-) mice developed local inflammatory lesions with or without epithelial dysplasia as well as adenocarcinomas, which were larger relative to RFC1(+/+) mice. In contrast, Folbp1(+/-) mice developed 4-fold (P < 0.05) more lesions relative to Folbp1(+/+) mice. In conclusion, Folbp1 and RFC1 genetically modified mice exhibit distinct changes in colonocyte phenotype and therefore have utility as models to examine the role of folate homeostasis in colon cancer development.

Indexed as

AnimalsAzoxymethaneCarcinogensCarrier ProteinsCell CycleCell Transformation, NeoplasticColonColonic NeoplasmsFolate Receptors, GPI-AnchoredGene Expression ProfilingGene SilencingGenetic Predisposition to DiseaseKidneyMaleMembrane Transport ModulatorsMembrane Transport ProteinsAzoxymethaneCarcinogensCarrier ProteinsFolate Receptors, GPI-AnchoredMembrane Transport ModulatorsMembrane Transport ProteinsReceptors, Cell SurfaceReduced Folate Carrier ProteinS-AdenosylhomocysteineS-AdenosylmethionineSlc19a1 protein, mouseNon-programmatic

Identifiers

PMID15705887
PMCPMC3938162
OpenAlexW2132713854

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.