Evidence map›Paper›PMID 34349180›Full record

ArticleScientific reports2021

Acetylation turns leucine into a drug by membrane transporter switching.

Grant C Churchill, Michael Strupp, Cailley Factor, Tatiana Bremova-Ertl, Mallory Factor, Marc C Patterson, Frances M Platt, Antony Galione

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. 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
3.4field-weighted citation impact, top 8% 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, 38 citations in OpenAlex.

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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

8 authors at 5 institutions in 4 countries.

Grant C ChurchillDepartment of Pharmacology, University of Oxford, Mansfield Road, Oxford, UK. grant.churchill@pharm.ox.ac.uk.
Michael StruppDepartment of Neurology and German Center for Vertigo and Balance Disorders, Hospital of the Ludwig Maximilians University, Munich, Germany.
Cailley FactorDepartment of Pharmacology, University of Oxford, Mansfield Road, Oxford, UK.
Tatiana Bremova-ErtlDepartment of Neurology, University Hospital Inselspital, Bern, BE, Switzerland.
Mallory FactorDepartment of Pharmacology, University of Oxford, Mansfield Road, Oxford, UK.
Marc C PattersonDepartment of Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
Frances M PlattDepartment of Pharmacology, University of Oxford, Mansfield Road, Oxford, UK.
Antony GalioneDepartment of Pharmacology, University of Oxford, Mansfield Road, Oxford, UK.
University of Oxford · GBLudwig-Maximilians-Universität München · DEMansfield University · USMayo Clinic · USUniversity Hospital of Bern · CH

Funding

Wellcome Trust 202834/Z/16/Z
6 · The paper itself

Abstract

Small changes to molecules can have profound effects on their pharmacological activity as exemplified by the addition of the two-carbon acetyl group to make drugs more effective by enhancing their pharmacokinetic or pharmacodynamic properties. N-acetyl-D,L-leucine is approved in France for vertigo and its L-enantiomer is being developed as a drug for rare and common neurological disorders. However, the precise mechanistic details of how acetylation converts leucine into a drug are unknown. Here we show that acetylation of leucine switches its uptake into cells from the L-type amino acid transporter (LAT1) used by leucine to organic anion transporters (OAT1 and OAT3) and the monocarboxylate transporter type 1 (MCT1). Both the kinetics of MCT1 (lower affinity compared to LAT1) and the ubiquitous tissue expression of MCT1 make it well suited for uptake and distribution of N-acetyl-L-leucine. MCT1-mediated uptake of a N-acetyl-L-leucine as a prodrug of leucine bypasses LAT1, the rate-limiting step in activation of leucine-mediated signalling and metabolic process inside cells such as mTOR. Converting an amino acid into an anion through acetylation reveals a way for the rational design of drugs to target anion transporters.

Indexed as

AcetylationBiological TransportHEK293 CellsHumansKineticsLarge Neutral Amino Acid-Transporter 1LeucineMonocarboxylate Transport Protein 1Monocarboxylic Acid TransportersOrganic Anion Transporters, Sodium-IndependentOrganic Anion Transport Protein 1ProdrugsSignal TransductionSymportersacetylleucineLarge Neutral Amino Acid-Transporter 1LeucineMonocarboxylate Transport Protein 1Monocarboxylic Acid TransportersOrganic Anion Transporters, Sodium-IndependentOrganic Anion Transport Protein 1organic anion transport protein 3ProdrugsSLC22A6 protein, humanSymporters

Identifiers

PMID34349180
PMCPMC8338929
OpenAlexW3188004113

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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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.