Evidence map›Paper›PMID 29326243›Full record

ArticleMolecular pharmacology2018

Concentrative Transport of Antifolates Mediated by the Proton-Coupled Folate Transporter (SLC46A1); Augmentation by a HEPES Buffer.

Rongbao Zhao, Mitra Najmi, Srinivas Aluri, David C Spray, I David Goldman

Open access · bronzeAbstract read
In one paragraph

Article in Molecular pharmacology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.4field-weighted citation impact, top 37% 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

5 citing papers in PubMed, 6 citations in OpenAlex.

  1. Article
  2. Biology and therapeutic applications of the proton-coupled folate transporter.Expert opinion on drug metabolism & toxicology · 2022
    Article
  3. Article
  4. Review
  5. 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

5 authors at 1 institution in 1 country.

Rongbao ZhaoDepartments of Molecular Pharmacology (R.Z., M.N., S.A., I.D.G.), Medicine (R.Z., I.D.G.), and Dominick P. Purpura Department of Neuroscience (D.C.S.), Albert Einstein College of Medicine, Bronx, New York.
Mitra NajmiDepartments of Molecular Pharmacology (R.Z., M.N., S.A., I.D.G.), Medicine (R.Z., I.D.G.), and Dominick P. Purpura Department of Neuroscience (D.C.S.), Albert Einstein College of Medicine, Bronx, New York.
Srinivas AluriDepartments of Molecular Pharmacology (R.Z., M.N., S.A., I.D.G.), Medicine (R.Z., I.D.G.), and Dominick P. Purpura Department of Neuroscience (D.C.S.), Albert Einstein College of Medicine, Bronx, New York.
David C SprayDepartments of Molecular Pharmacology (R.Z., M.N., S.A., I.D.G.), Medicine (R.Z., I.D.G.), and Dominick P. Purpura Department of Neuroscience (D.C.S.), Albert Einstein College of Medicine, Bronx, New York.
I David GoldmanDepartments of Molecular Pharmacology (R.Z., M.N., S.A., I.D.G.), Medicine (R.Z., I.D.G.), and Dominick P. Purpura Department of Neuroscience (D.C.S.), Albert Einstein College of Medicine, Bronx, New York i.david.goldman@einstein.yu.edu.
Albert Einstein College of Medicine · US

Funding

Special Animal CoreP30DK041296 · NIDDK · YESHIVA UNIVERSITY · PI WOLKOFF, ALLAN W · 1989 to 2018
$22.9M
Proton-coupled folate/antifolate transportR01CA082621 · NCI · YESHIVA UNIVERSITY · PI GOLDMAN, ISRAEL DAVID · 1999 to 2017
$9.0M
NCI NIH HHS R01 CA082621NIDDK NIH HHS P30 DK041296
6 · The paper itself

Abstract

The proton-coupled folate transporter (PCFT) is ubiquitously expressed in solid tumors to which it delivers antifolates, particularly pemetrexed, into cancer cells. Studies of PCFT-mediated transport, to date, have focused exclusively on the influx of folates and antifolates. This article addresses the impact of PCFT on concentrative transport, critical to the formation of the active polyglutamate congeners, and at pH levels relevant to the tumor microenvironment. An HeLa-derived cell line was employed, in which folate-specific transport was mediated exclusively by PCFT. At pH 7.0, there was a substantial chemical gradient for methotrexate that decreased as the extracellular pH was increased. A chemical gradient was still detected at pH 7.4 in the usual HEPES-based transport buffer in contrast to what was observed in a bicarbonate/CO

Indexed as

Biological Transport, ActiveBuffersFolic Acid AntagonistsHeLa CellsHEPESHumansHydrogen-Ion ConcentrationMethotrexatePolyglutamic AcidProton-Coupled Folate TransporterTumor MicroenvironmentBuffersFolic Acid AntagonistsHEPESMethotrexatePolyglutamic AcidProton-Coupled Folate TransporterSLC46A1 protein, human

Identifiers

PMID29326243
PMCPMC5801552
OpenAlexW2783192825

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.