Evidence map›Paper›PMID 41387948›Full record

ArticleScientific reports2025

Proteasomal activity and disease outcome in phenylketonuria patients with a structural SLC7A5 variant.

Miroslaw Bik-Multanowski, Sylwia Bobis-Wozowicz, Marcin Piejko, Anna Madetko-Talowska, Katarzyna Szewczyk, Kinga Kopaczka-Koziol, Slawomir Lasota, Urszula Jankowska, Bozena Skupien-Rabian, Dorota Korycinska-Chaaban and 2 more

Abstract read
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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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

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

12 authors.

Miroslaw Bik-MultanowskiInstitute of Human Genetics, University Hospital, LMU Munich, Munich, Germany. miroslaw.bikmultanowski@med.uni-muenchen.de.
Sylwia Bobis-WozowiczJagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Krakow, Poland.
Marcin PiejkoJagiellonian University Medical College, Krakow, Poland.
Anna Madetko-TalowskaDepartment of Medical Genetics, Jagiellonian University Medical College, Krakow, Poland.
Katarzyna SzewczykDepartment of Medical Genetics, Jagiellonian University Medical College, Krakow, Poland.
Kinga Kopaczka-KoziolJagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Krakow, Poland.
Slawomir LasotaJagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Krakow, Poland.
Urszula JankowskaJagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Proteomics Core Facility, Krakow, Poland.
Bozena Skupien-RabianJagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Proteomics Core Facility, Krakow, Poland.
Dorota Korycinska-ChaabanDepartment of Inborn Errors of Metabolism and Paediatrics, Institute of Mother and Child, Warsaw, Poland.
Amanda Krzywdzinska-RogowskaDepartment of Inborn Errors of Metabolism and Paediatrics, Institute of Mother and Child, Warsaw, Poland.
Ortrud K SteinleinInstitute of Human Genetics, University Hospital, LMU Munich, Munich, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Treatment in phenylketonuria is based on using a diet aimed at protecting the brain from uncontrolled hyperphenylalaninemia. Although treatment methods are well established, clinical outcomes vary among patients. This may be due to alterations of phenylalanine transport mediated by the amino acid transporter LAT1, which also regulates the function of the mTORC1/proteasomal pathway. We investigated the clinical and cellular effects of a structural variant in the SLC7A5 gene, which encodes LAT1. The investigated variant was previously associated with altered phenylalanine metabolism in preliminary studies. We assessed physical and intellectual development in children with phenylketonuria. Next, we explored the cellular mechanisms underlying potential phenotypic differences between carriers and noncarriers of the rs113883650 polymorphism - a marker of the studied SLC7A5 variant. For cellular experiments we used a model of hyperphenylalaninemia based on induced pluripotent stem cells. We assessed LAT1 abundance and performed transcriptomic and proteomic analyses. We found that carriers of rs113883650 were more prone to being overweight but exhibited significantly better intellectual development. They also showed a corresponding increased LAT1 abundance and decreased expression of proteasomal genes and the FOXO signalling pathway. We propose considering of the rs113883650 status during the follow-up of children with phenylketonuria. It may also hold relevance in other LAT1-related conditions including cancers.

Indexed as

Large Neutral Amino Acid-Transporter 1PhenylketonuriasProteasome Endopeptidase ComplexChildChild, PreschoolFemaleHumansMalePhenylalaninePolymorphism, Single NucleotideLarge Neutral Amino Acid-Transporter 1PhenylalanineProteasome Endopeptidase ComplexSLC7A5 protein, humanCellular modelFOXO pathwayIntelligencePKUProteasomes

Identifiers

PMID41387948
PMCPMC12706028

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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.