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Impaired Amino Acid Transport at the Blood Brain Barrier Is a Cause of Autism Spectrum Disorder.

Cell | 2016

Autism spectrum disorders (ASD) are a group of genetic disorders often overlapping with other neurological conditions. We previously described abnormalities in the branched-chain amino acid (BCAA) catabolic pathway as a cause of ASD. Here, we show that the solute carrier transporter 7a5 (SLC7A5), a large neutral amino acid transporter localized at the blood brain barrier (BBB), has an essential role in maintaining normal levels of brain BCAAs. In mice, deletion of Slc7a5 from the endothelial cells of the BBB leads to atypical brain amino acid profile, abnormal mRNA translation, and severe neurological abnormalities. Furthermore, we identified several patients with autistic traits and motor delay carrying deleterious homozygous mutations in the SLC7A5 gene. Finally, we demonstrate that BCAA intracerebroventricular administration ameliorates abnormal behaviors in adult mutant mice. Our data elucidate a neurological syndrome defined by SLC7A5 mutations and support an essential role for the BCAA in human brain function.

Pubmed ID: 27912058 RIS Download

Research resources used in this publication

Associated grants

  • Agency: NHGRI NIH HHS, United States
    Id: UM1 HG008900
  • Agency: Austrian Science Fund FWF, Austria
    Id: W 1232
  • Agency: NHGRI NIH HHS, United States
    Id: U54 HG006504
  • Agency: NIMH NIH HHS, United States
    Id: R01 MH103616
  • Agency: NIGMS NIH HHS, United States
    Id: R01 GM108911
  • Agency: NICHD NIH HHS, United States
    Id: P01 HD070494

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This is a list of tools and resources that we have found mentioned in this publication.


HOMOZYGOSITYMAPPER (tool)

RRID:SCR_001714

A web-based approach of homozygosity mapping that can handle tens of thousands markers. User can upload their own SNP genotype files to the database. Intuitive graphic interface is provided to view the homozygous stretches, with the ability of zooming into single chromosomes or user-defined chromosome regions. The underlying genotypes in all samples are displayed. The software is also integrated with our candidate gene search engine, GeneDistiller, so that users can interactively determine the most promising gene. (entry from Genetic Analysis Software)

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GATK (tool)

RRID:SCR_001876

A software package to analyze next-generation resequencing data. The toolkit offers a wide variety of tools, with a primary focus on variant discovery and genotyping as well as strong emphasis on data quality assurance. Its robust architecture, powerful processing engine and high-performance computing features make it capable of taking on projects of any size. This software library makes writing efficient analysis tools using next-generation sequencing data very easy, and second it's a suite of tools for working with human medical resequencing projects such as 1000 Genomes and The Cancer Genome Atlas. These tools include things like a depth of coverage analyzers, a quality score recalibrator, a SNP/indel caller and a local realigner. (entry from Genetic Analysis Software)

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UCSC Genome Browser (tool)

RRID:SCR_005780

Portal to interactively visualize genomic data. Provides reference sequences and working draft assemblies for collection of genomes and access to ENCODE and Neanderthal projects. Includes collection of vertebrate and model organism assemblies and annotations, along with suite of tools for viewing, analyzing and downloading data.

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OMIM (tool)

RRID:SCR_006437

Online catalog of human genes and genetic disorders, for clinical features, phenotypes and genes. Collection of human genes and genetic phenotypes, focusing on relationship between phenotype and genotype. Referenced overviews in OMIM contain information on all known mendelian disorders and variety of related genes. It is updated daily, and entries contain copious links to other genetics resources.

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SAM format (tool)

RRID:SCR_012093

A generic alignment format for storing read alignments against reference sequences, supporting short and long reads (up to 128 Mbp) produced by different sequencing platforms.

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STAR (tool)

RRID:SCR_015899

Software performing alignment of high-throughput RNA-seq data. Aligns RNA-seq reads to reference genome using uncompressed suffix arrays.

View all literature mentions

STAR (tool)

RRID:SCR_004463

Software performing alignment of high-throughput RNA-seq data. Aligns RNA-seq reads to reference genome using uncompressed suffix arrays.

View all literature mentions

Phospho-p70 S6 Kinase (Thr389) (108D2) Rabbit mAb (antibody)

RRID:AB_2269803

This monoclonal targets p70 S6 Kinase, phospho (Thr389)

View all literature mentions

eIF2 alpha Antibody (antibody)

RRID:AB_2230924

This polyclonal targets eIF2 alpha

View all literature mentions

Anti-Neuroligin 2 (antibody)

RRID:AB_993014

This polyclonal targets Neuroligin 2

View all literature mentions

Phospho-eIF4E (Ser209) Antibody (antibody)

RRID:AB_331677

This polyclonal targets Phospho-eIF4E (Ser209)

View all literature mentions

Rabbit anti-calretinin (antibody)

RRID:AB_2619710

This polyclonal targets Human Calretinin

View all literature mentions

Anti-4E-BP1, phospho (Thr37 / Thr46) Monoclonal Antibody (antibody)

RRID:AB_560835

This monoclonal targets 4E-BP1, phospho (Thr37 / Thr46)

View all literature mentions

Phospho-eIF2alpha (Ser51) (D9G8) XP Rabbit mAb (antibody)

RRID:AB_2096481

This monoclonal targets eIF2alpha (Ser51)

View all literature mentions

CDP (M-222) (antibody)

RRID:AB_2261231

This polyclonal targets CUX1

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B6.Cg-Tg(Tek-cre)12Flv/J (organism)

RRID:IMSR_JAX:004128

Mus musculus with name B6.Cg-Tg(Tek-cre)12Flv/J from IMSR.

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STOCK Gt(ROSA)26Sortm4(ACTB-tdTomato.-EGFP)Luo/J (organism)

RRID:IMSR_JAX:007576

Mus musculus with name STOCK Gt(ROSA)26Sortm4(ACTB-tdTomato.-EGFP)Luo/J from IMSR.

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Systems Transcriptional Activity Reconstruction (data or information resource)

RRID:SCR_005622

A next-generation web-based application that aims to provide an integrated solution for both visualization and analysis of deep-sequencing data, along with simple access to public datasets.

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FASTX-Toolkit (data processing software)

RRID:SCR_005534

Software tool as collection of command line tools for Short-Reads FASTA/FASTQ files preprocessing.

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Sequencher (software resource)

RRID:SCR_001528

Software for Next-Generation DNA sequencing, Sanger DNA analysis, and RNA sequencing. It contains sequence analysis tools which include reference-guided alignments, de novo assembly, variant calling, and SNP analyses. It has integrated the Cufflinks suite for in-depth transcript analysis and differential gene expression of RNA-Seq data.

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Primer3 (software resource)

RRID:SCR_003139

Tool used to design PCR primers from DNA sequence - often in high-throughput genomics applications. It does everything from mispriming libraries to sequence quality data to the generation of internal oligos.

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DESeq (software resource)

RRID:SCR_000154

THIS RESOURCE IS NO LONGER IN SERVICE. Documented on August 30,2023. Software for differential gene expression analysis based on the negative binomial distribution. It estimates variance-mean dependence in count data from high-throughput sequencing assays and tests for differential expression.

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R Project for Statistical Computing (software resource)

RRID:SCR_001905

Software environment and programming language for statistical computing and graphics. R is integrated suite of software facilities for data manipulation, calculation and graphical display. Can be extended via packages. Some packages are supplied with the R distribution and more are available through CRAN family.It compiles and runs on wide variety of UNIX platforms, Windows and MacOS.

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SAMTOOLS (software resource)

RRID:SCR_002105

Original SAMTOOLS package has been split into three separate repositories including Samtools, BCFtools and HTSlib. Samtools for manipulating next generation sequencing data used for reading, writing, editing, indexing,viewing nucleotide alignments in SAM,BAM,CRAM format. BCFtools used for reading, writing BCF2,VCF, gVCF files and calling, filtering, summarising SNP and short indel sequence variants. HTSlib used for reading, writing high throughput sequencing data.

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pClamp (software resource)

RRID:SCR_011323

Software suite for electrophysiology data acquisition and analysis by Molecular Devices. Used for the control and recording of voltage clamp, current clamp, and patch clamp experiments. The software suite consists of Clampex 11 Software for data acquisition, AxoScope 11 Software for background recording, Clampfit 11 Software for data analysis, and optional Clampfit Advanced Analysis Module for sophisticated and streamlined analysis.

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Origin (software resource)

RRID:SCR_014212

Software application for data analysis and graphing. Origin contains a variety of different graph types, including statistical plots, 2D and 3D vector graphs, and counter graphs. More advance version is OriginPro which offers advanced analysis tools and Apps for Peak Fitting, Surface Fitting, Statistics and Signal Processing.

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Rabbit anti-calretinin (antibody)

RRID:AB_2619710

This polyclonal targets Human Calretinin

View all literature mentions

Phospho-p70 S6 Kinase (Thr389) (108D2) Rabbit mAb (antibody)

RRID:AB_2269803

This monoclonal targets p70 S6 Kinase, phospho (Thr389)

View all literature mentions

Phospho-eIF2alpha (Ser51) (D9G8) XP Rabbit mAb (antibody)

RRID:AB_2096481

This monoclonal targets eIF2alpha (Ser51)

View all literature mentions

eIF2 alpha Antibody (antibody)

RRID:AB_2230924

This polyclonal targets eIF2 alpha

View all literature mentions

Anti-Neuroligin 2 (antibody)

RRID:AB_993014

This polyclonal targets Neuroligin 2

View all literature mentions

Phospho-eIF4E (Ser209) Antibody (antibody)

RRID:AB_331677

This polyclonal targets Phospho-eIF4E (Ser209)

View all literature mentions

Anti-4E-BP1, phospho (Thr37 / Thr46) Monoclonal Antibody (antibody)

RRID:AB_560835

This monoclonal targets 4E-BP1, phospho (Thr37 / Thr46)

View all literature mentions

Rabbit anti-calretinin (antibody)

RRID:AB_2619710

This polyclonal targets Human Calretinin

View all literature mentions

Anti-Neuroligin 2 (antibody)

RRID:AB_993014

This polyclonal targets Neuroligin 2

View all literature mentions

Phospho-p70 S6 Kinase (Thr389) (108D2) Rabbit mAb (antibody)

RRID:AB_2269803

This monoclonal targets p70 S6 Kinase, phospho (Thr389)

View all literature mentions

Phospho-eIF2alpha (Ser51) (D9G8) XP Rabbit mAb (antibody)

RRID:AB_2096481

This monoclonal targets eIF2alpha (Ser51)

View all literature mentions

eIF2 alpha Antibody (antibody)

RRID:AB_2230924

This polyclonal targets eIF2 alpha

View all literature mentions

Phospho-eIF4E (Ser209) Antibody (antibody)

RRID:AB_331677

This polyclonal targets Phospho-eIF4E (Ser209)

View all literature mentions

Anti-4E-BP1, phospho (Thr37 / Thr46) Monoclonal Antibody (antibody)

RRID:AB_560835

This monoclonal targets 4E-BP1, phospho (Thr37 / Thr46)

View all literature mentions