Evidence map›Paper›PMID 20441590›Full record

ArticleBMC developmental biology2010

Knockout of the folate transporter folt-1 causes germline and somatic defects in C. elegans.

Misa U Austin, Wei-Siang Liau, Krishnaswamy Balamurugan, Balasubramaniem Ashokkumar, Hamid M Said, Craig W LaMunyon

Open access · hybridAbstract read
In one paragraph

Article in BMC developmental biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.3field-weighted citation impact, top 15% 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

20 citing papers in PubMed, 29 citations in OpenAlex.

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  7. Biology of theGenetics · 2019
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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

6 authors at 4 institutions in 1 country.

Misa U AustinDepartment of Biological Sciences, California State University Pomona, CA 91768, USA.
Wei-Siang Liau
Krishnaswamy Balamurugan
Balasubramaniem Ashokkumar
Hamid M Said
Craig W LaMunyon
California State University System · USLong Beach Medical Center · USCalifornia State Polytechnic University · USUniversity of California, Irvine · US

Funding

The Response of Choline and Folate Status to Controlled Levels of Choline IntakeS06GM053933 · NIGMS · CALIFORNIA STATE POLY U POMONA · PI LAMUNYON, CRAIG W · 1997 to 2007
$15.1M
Regulation of Sperm Cell Differentiation in C. elegansSC3GM087212 · NIGMS · CALIFORNIA STATE POLY U POMONA · PI LAMUNYON, CRAIG W · 2009 to 2019
$989k
C elegans:a model to study intestinal water-soluble vitamins transport in vivoR21DK075348 · NIDDK · SOUTHERN CALIFORNIA INST FOR RES/EDUC · PI SAID, HAMID M · 2006 to 2007
$329k
NIDDK NIH HHS DK075348NIGMS NIH HHS 1 SC3 GM087212-01NIGMS NIH HHS 5 S06 GM053933-10NIGMS NIH HHS SC3 GM087212
6 · The paper itself

Abstract

backgroundThe C. elegans gene folt-1 is an ortholog of the human reduced folate carrier gene. The FOLT-1 protein has been shown to transport folate and to be involved in uptake of exogenous folate by worms. A knockout mutation of the gene, folt-1(ok1460), was shown to cause sterility, and here we investigate the source of the sterility and the effect of the folt-1 knockout on somatic function.

resultsOur results show that folt-1(ok1460) knockout hermaphrodites have a substantially reduced germline, generate a small number of functional sperm, and only rarely produce a functional oocyte. We found no evidence of increased apoptosis in the germline of folt-1 knockout mutants, suggesting that germline proliferation is defective. While folt-1 knockout males are fertile, their rate of spermatogenesis was severely diminished, and the males were very poor maters. The mating defect is likely due to compromised metabolism and/or other somatic functions, as folt-1 knockout hermaphrodites displayed a shortened lifespan and elongated defecation intervals.

conclusionsThe FOLT-1 protein function affects both the soma and the germline. folt-1(ok1460) hermaphrodites suffer severely diminished lifespan and germline defects that result in sterility. Germline defects associated with folate deficiency appear widespread in animals, being found in humans, mice, fruit flies, and here, nematodes.

Indexed as

AnimalsCaenorhabditis elegansCaenorhabditis elegans ProteinsDisorders of Sex DevelopmentFolic AcidGene Knockout TechniquesGerm CellsLongevityMaleOrganic Anion TransportersCaenorhabditis elegans ProteinsFolic AcidFolt-1 protein, C elegansOrganic Anion Transporters

Identifiers

PMID20441590
PMCPMC2874772
OpenAlexW2112352723

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.