Evidence map›Paper›PMID 24745983›Full record

ReviewCurrent topics in membranes2014

Biology of the major facilitative folate transporters SLC19A1 and SLC46A1.

Zhanjun Hou, Larry H Matherly

Abstract readReview
In one paragraph

Review in Current topics in membranes, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
79.3field-weighted citation impact, top 1% 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

66 citing papers in PubMed, 148 citations in OpenAlex.

  1. Review
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  15. One-carbon metabolism and microbial pathogenicity.Molecular oral microbiology · 2024
    Review
  16. Article
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  18. Article
  19. Impact of genetic variants in the solute carrier (Cancer drug resistance (Alhambra, Calif.) · 2024
    Review
  20. Article

6 more citing papers are in PubMed but not listed here.

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

2 authors at 1 institution in 1 country.

Zhanjun HouDepartment of Oncology, Wayne State University School of Medicine, Detroit, Michigan, USA; Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Detroit, Michigan, USA. Electronic address: houz@karmanos.org.
Larry H MatherlyDepartment of Oncology, Wayne State University School of Medicine, Detroit, Michigan, USA; Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Detroit, Michigan, USA; Department of Pharmacology, Wayne State University School of Medicine, Detroit, Michigan, USA. Electronic address: matherly@karmanos.org.
Wayne State University · US

Funding

MOLECULAR REGULATION OF FOLATE AND ANTIFOLATE TRANSPORTR01CA053535 · NCI · WAYNE STATE UNIVERSITY · PI HOU, ZHANJUN, MATHERLY, LARRY H · 1993 to 2024
$6.3M
Discovery of novel PCFT-targeted agentsR01CA152316 · NCI · WAYNE STATE UNIVERSITY · PI GANGJEE, ALEEM, MATHERLY, LARRY H · 2011 to 2015
$2.3M
NCI NIH HHS R01 CA053535NCI NIH HHS R01 CA152316NCI NIH HHS R01 CA53535
6 · The paper itself

Abstract

This chapter focuses on the biology of the major facilitative membrane folate transporters, the reduced folate carrier (RFC), and the proton-coupled folate transporter (PCFT). Folates are essential vitamins, and folate deficiency contributes to a variety of heath disorders. RFC is ubiquitously expressed and is the major folate transporter in mammalian cells and tissues. PCFT mediates intestinal absorption of dietary folates. Clinically relevant antifolates such as methotrexate (MTX) are transported by RFC, and the loss of RFC transport is an important mechanism of MTX resistance. PCFT is abundantly expressed in human tumors and is active under pH conditions associated with the tumor microenvironment. Pemetrexed (PMX) is an excellent substrate for PCFT as well as for RFC. Novel tumor-targeted antifolates related to PMX with selective membrane transport by PCFT over RFC are being developed. The molecular picture of RFC and PCFT continues to evolve relating to membrane topology, N-glycosylation, energetics, and identification of structurally and functionally important domains and amino acids. The molecular bases for MTX resistance associated with loss of RFC function, and for the rare autosomal recessive condition, hereditary folate malabsorption (HFM), attributable to mutant PCFT, have been established. From structural homologies to the bacterial transporters GlpT and LacY, homology models were developed for RFC and PCFT, enabling new mechanistic insights and experimentally testable hypotheses. RFC and PCFT exist as homo-oligomers, and evidence suggests that homo-oligomerization of RFC and PCFT monomeric proteins may be important for intracellular trafficking and/or transport function. Better understanding of the structure and function of RFC and PCFT should facilitate the rational development of new therapeutic strategies for cancer as well as for HFM.

Indexed as

AnimalsFolic AcidFolic Acid AntagonistsHumansProton-Coupled Folate TransporterReduced Folate Carrier ProteinFolic AcidFolic Acid AntagonistsProton-Coupled Folate TransporterReduced Folate Carrier ProteinAntifolateFolateOligomerizationProton-coupled folate transporterReduced folate carrierTransporter

Identifiers

PMID24745983
PMCPMC4185403
OpenAlexW90985925

What OpenQuestion holds

Textmetadata
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.