Evidence map›Paper›PMID 25086046›Full record

ArticleThe Journal of biological chemistry2014

Rho GTPases RhoA and Rac1 mediate effects of dietary folate on metastatic potential of A549 cancer cells through the control of cofilin phosphorylation.

Natalia V Oleinik, Kristi L Helke, Emily Kistner-Griffin, Natalia I Krupenko, Sergey A Krupenko

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
2.3field-weighted citation impact, top 13% 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

38 citing papers in PubMed, 51 citations in OpenAlex.

  1. Review
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  6. ERK3 and DGKζ interact to modulate cell motility in lung cancer cells.Frontiers in cell and developmental biology · 2023
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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

5 authors at 2 institutions in 1 country.

Natalia V OleinikDepartment of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, South Carolina 29425.
Kristi L HelkeComparative Medicine and Laboratory Animal Resources, and Medical University of South Carolina, Charleston, South Carolina 29425.
Emily Kistner-GriffinHollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina 29425.
Natalia I KrupenkoDepartment of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, South Carolina 29425; Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina 29425.
Sergey A KrupenkoDepartment of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, South Carolina 29425; Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina 29425. Electronic address: sergey_krupenko@unc.edu.
Medical University of South Carolina · USMUSC Hollings Cancer Center · US

Funding

Translational Science Laboratory Shared ResourceP30CA138313 · NCI · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI RAYMOND N. DUBOIS · 2009 to 2026
$42.7M
MECHANISM OF ACTIONS OF A MAJOR FOLATE ENZYMER01DK054388 · NIDDK · VANDERBILT UNIVERSITY · PI KRUPENKO, SERGEY A · 1998 to 2015
$4.7M
FDH: A Novel Determinant of Tumor SuppressionR01CA095030 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI KRUPENKO, SERGEY A · 2005 to 2014
$2.5M
NCI NIH HHS CA095030NCI NIH HHS P30 CA138313NCI NIH HHS R01 CA095030NIDDK NIH HHS DK54388NIDDK NIH HHS R01 DK054388
6 · The paper itself

Abstract

Folate, an important nutrient in the human diet, has been implicated in cancer, but its role in metastasis is not established. We have shown previously that the withdrawal of medium folate leads to the inhibition of migration and invasion of A549 lung carcinoma cells. Here we have demonstrated that medium folate regulates the function of Rho GTPases by enabling their carboxyl methylation and translocation to plasma membrane. Conversely, the lack of folate leads to the retention of these proteins in endoplasmic reticulum. Folate also promoted the switch from inactive (GDP-bound) to active (GTP-bound) GTPases, resulting in the activation of downstream kinases p21-activated kinase and LIM kinase and phosphorylation of the actin-depolymerizing factor cofilin. We have further demonstrated that in A549 cells two GTPases, RhoA and Rac1, but not Cdc42, are immediate sensors of folate status: the siRNA silencing of RhoA or Rac1 blocked effects of folate on cofilin phosphorylation and cellular migration and invasion. The finding that folate modulates metastatic potential of cancer cells was confirmed in an animal model of lung cancer using tail vein injection of A549 cells in SCID mice. A folate-rich diet enhanced lung colonization and distant metastasis to lymph nodes and decreased overall survival (35 versus 63 days for mice on a folate-restricted diet). High folate also promoted epithelial-mesenchymal transition in cancer cells and experimental mouse tumors. Our study provides experimental evidence for a mechanism of metastasis promotion by dietary folate and highlights the interaction between nutrients and metastasis-related signaling.

Indexed as

AdenocarcinomaAdministration, OralAnimalscdc42 GTP-Binding ProteinCell Line, TumorCell MembraneCell MovementCell SurvivalCofilin 1Dietary SupplementsEndoplasmic ReticulumEpithelial-Mesenchymal TransitionFolic AcidHumansLung NeoplasmsLymphatic Metastasiscdc42 GTP-Binding ProteinCFL1 protein, humanCofilin 1Folic Acidp21-Activated Kinasesrac1 GTP-Binding ProteinRAC1 protein, humanrhoA GTP-Binding ProteinRHOA protein, humanCell MotilityCofilinFolateRho GTPasesTumor Metastases

Identifiers

PMID25086046
PMCPMC4176232
OpenAlexW2041616575

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.