LIVIVO - Das Suchportal für Lebenswissenschaften

switch to English language
Erweiterte Suche

Suchergebnis

Treffer 1 - 10 von insgesamt 89

Suchoptionen

  1. Artikel ; Online: Global developmental delay and a de novo deletion of the 16p13.13 region.

    Krakowski, Aneta / Hoang, Ny / Trost, Brett / Summers, Jane / Ambrozewicz, Patricia / Vorstman, Jacob

    BMJ case reports

    2024  Band 17, Heft 2

    Abstract: Many rare genetic variants are associated with the risk of atypical neurodevelopmental trajectories. In this study, we report a patient with developmental delay, autistic traits and multiple congenital anomalies, including congenital heart anomalies and ... ...

    Abstract Many rare genetic variants are associated with the risk of atypical neurodevelopmental trajectories. In this study, we report a patient with developmental delay, autistic traits and multiple congenital anomalies, including congenital heart anomalies and orofacial cleft, with a 0.832 Mb de novo deletion of the 16p13.13 region classified as a variant of uncertain significance. Comparison of similar sized deletions and duplications overlapping the same genes in the DECIPHER database, revealed seven reports of copy number variants (CNVs), four duplications and three deletions. A neurodevelopmental phenotype including learning disability and intellectual disability was noted in some of the DECIPHER entries where phenotype was provided. Although the association between a deletion in this region and an atypical neurodevelopmental trajectory remains to be elucidated, the overlapping CNVs with neurodevelopmental phenotypes suggests possible candidate genes within the 16p13.13 region.
    Mesh-Begriff(e) Humans ; Cleft Lip ; Cleft Palate ; Intellectual Disability/genetics ; Abnormalities, Multiple/genetics ; DNA Copy Number Variations/genetics
    Sprache Englisch
    Erscheinungsdatum 2024-02-28
    Erscheinungsland England
    Dokumenttyp Case Reports ; Journal Article
    ISSN 1757-790X
    ISSN (online) 1757-790X
    DOI 10.1136/bcr-2022-251521
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  2. Artikel ; Online: Complex Autism Spectrum Disorder in a Patient with a Novel De Novo Heterozygous

    Yip, Silas / Calli, Kristina / Qiao, Ying / Trost, Brett / Scherer, Stephen W / Lewis, M E Suzanne

    Genes

    2023  Band 14, Heft 12

    Abstract: Autism spectrum disorder (ASD) comprises a group of complex neurodevelopmental features seen in many different forms due to variable causes. Highly impactful ASD-susceptibility genes are involved in pathways associated with brain development, chromatin ... ...

    Abstract Autism spectrum disorder (ASD) comprises a group of complex neurodevelopmental features seen in many different forms due to variable causes. Highly impactful ASD-susceptibility genes are involved in pathways associated with brain development, chromatin remodeling, and transcription regulation. In this study, we investigate a proband with complex ASD. Whole genome sequencing revealed a novel de novo missense mutation of a highly conserved amino acid residue (NP_001289981.1:p.His516Gln; chr2:1917275; hg38) in the
    Mesh-Begriff(e) Humans ; Autism Spectrum Disorder/genetics ; Phenotype ; Mutation, Missense ; Genetic Association Studies ; Gene Expression Regulation ; Nerve Tissue Proteins/genetics ; Transcription Factors/genetics
    Chemische Substanzen MYT1L protein, human ; Nerve Tissue Proteins ; Transcription Factors
    Sprache Englisch
    Erscheinungsdatum 2023-11-24
    Erscheinungsland Switzerland
    Dokumenttyp Case Reports
    ZDB-ID 2527218-4
    ISSN 2073-4425 ; 2073-4425
    ISSN (online) 2073-4425
    ISSN 2073-4425
    DOI 10.3390/genes14122122
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  3. Artikel ; Online: Discovery of genomic variation across a generation.

    Trost, Brett / Loureiro, Livia O / Scherer, Stephen W

    Human molecular genetics

    2020  Band 30, Heft R2, Seite(n) R174–R186

    Abstract: Over the past 30 years (the timespan of a generation), advances in genomics technologies have revealed tremendous and unexpected variation in the human genome and have provided increasingly accurate answers to long-standing questions of how much genetic ... ...

    Abstract Over the past 30 years (the timespan of a generation), advances in genomics technologies have revealed tremendous and unexpected variation in the human genome and have provided increasingly accurate answers to long-standing questions of how much genetic variation exists in human populations and to what degree the DNA complement changes between parents and offspring. Tracking the characteristics of these inherited and spontaneous (or de novo) variations has been the basis of the study of human genetic disease. From genome-wide microarray and next-generation sequencing scans, we now know that each human genome contains over 3 million single nucleotide variants when compared with the ~ 3 billion base pairs in the human reference genome, along with roughly an order of magnitude more DNA-approximately 30 megabase pairs (Mb)-being 'structurally variable', mostly in the form of indels and copy number changes. Additional large-scale variations include balanced inversions (average of 18 Mb) and complex, difficult-to-resolve alterations. Collectively, ~1% of an individual's genome will differ from the human reference sequence. When comparing across a generation, fewer than 100 new genetic variants are typically detected in the euchromatic portion of a child's genome. Driven by increasingly higher-resolution and higher-throughput sequencing technologies, newer and more accurate databases of genetic variation (for instance, more comprehensive structural variation data and phasing of combinations of variants along chromosomes) of worldwide populations will emerge to underpin the next era of discovery in human molecular genetics.
    Mesh-Begriff(e) Female ; Genetic Variation ; Genome, Human ; Genome-Wide Association Study ; Genomics/methods ; High-Throughput Nucleotide Sequencing ; Humans ; Male ; Mutation ; Whole Genome Sequencing
    Sprache Englisch
    Erscheinungsdatum 2020-05-12
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1108742-0
    ISSN 1460-2083 ; 0964-6906
    ISSN (online) 1460-2083
    ISSN 0964-6906
    DOI 10.1093/hmg/ddab209
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  4. Artikel ; Online: Conservation of kinase-phosphorylation site pairings: Evidence for an evolutionarily dynamic phosphoproteome.

    McDonald, Megan / Trost, Brett / Napper, Scott

    PloS one

    2018  Band 13, Heft 8, Seite(n) e0202036

    Abstract: Kinase-mediated protein phosphorylation is a central mechanism for regulation of cellular responses and phenotypes. While considerable information is available regarding the evolutionary relationships within the kinase family, as well as the evolutionary ...

    Abstract Kinase-mediated protein phosphorylation is a central mechanism for regulation of cellular responses and phenotypes. While considerable information is available regarding the evolutionary relationships within the kinase family, as well as the evolutionary conservation of phosphorylation sites, each aspect of this partnership is typically considered in isolation, despite their clear functional relationship. Here, to offer a more holistic perspective on the evolution of protein phosphorylation, the conservation of protein phosphorylation sites is considered in the context of the conservation of the corresponding modifying kinases. Specifically, conservation of defined kinase-phosphorylation site pairings (KPSPs), as well as of each of the component parts (the kinase and the phosphorylation site), were examined across a range of species. As expected, greater evolutionary distance between species was generally associated with lower probability of KPSP conservation, and only a small fraction of KPSPs were maintained across all species, with the vast majority of KPSP losses due to the absence of the phosphorylation site. This supports a model in which a relatively stable kinome promotes the emergence of functional substrates from an evolutionarily malleable phosphoproteome.
    Mesh-Begriff(e) Animals ; Biological Evolution ; Humans ; Models, Biological ; Phosphoproteins/metabolism ; Phosphorylation ; Phosphotransferases/metabolism ; Proteome ; Proteomics/methods
    Chemische Substanzen Phosphoproteins ; Proteome ; Phosphotransferases (EC 2.7.-)
    Sprache Englisch
    Erscheinungsdatum 2018-08-14
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0202036
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  5. Artikel ; Online: Complex Autism Spectrum Disorder with Epilepsy, Strabismus and Self-Injurious Behaviors in a Patient with a De Novo Heterozygous

    Evans, Daniel R / Qiao, Ying / Trost, Brett / Calli, Kristina / Martell, Sally / Jones, Steven J M / Scherer, Stephen W / Lewis, M E Suzanne

    Genes

    2022  Band 13, Heft 3

    Abstract: Autism spectrum disorder (ASD) describes a complex and heterogenous group of neurodevelopmental disorders. Whole genome sequencing continues to shed light on the multifactorial etiology of ASD. Dysregulated transcriptional pathways have been implicated ... ...

    Abstract Autism spectrum disorder (ASD) describes a complex and heterogenous group of neurodevelopmental disorders. Whole genome sequencing continues to shed light on the multifactorial etiology of ASD. Dysregulated transcriptional pathways have been implicated in neurodevelopmental disorders. Emerging evidence suggests that de novo POLR2A variants cause a newly described phenotype called ‘Neurodevelopmental Disorder with Hypotonia and Variable Intellectual and Behavioral Abnormalities’ (NEDHIB). The variable phenotype manifests with a spectrum of features; primarily early onset hypotonia and delay in developmental milestones. In this study, we investigate a patient with complex ASD involving epilepsy and strabismus. Whole genome sequencing of the proband−parent trio uncovered a novel de novo POLR2A variant (c.1367T>C, p. Val456Ala) in the proband. The variant appears deleterious according to in silico tools. We describe the phenotype in our patient, who is now 31 years old, draw connections between the previously reported phenotypes and further delineate this emerging neurodevelopmental phenotype. This study sheds new insights into this neurodevelopmental disorder, and more broadly, the genetic etiology of ASD.
    Mesh-Begriff(e) Autism Spectrum Disorder/genetics ; DNA-Directed RNA Polymerases/genetics ; Epilepsy/genetics ; Humans ; Intellectual Disability/genetics ; Muscle Hypotonia/genetics ; Self-Injurious Behavior ; Strabismus/genetics
    Chemische Substanzen DNA-Directed RNA Polymerases (EC 2.7.7.6) ; POLR2A RNA polymerase, human (EC 2.7.7.6)
    Sprache Englisch
    Erscheinungsdatum 2022-03-07
    Erscheinungsland Switzerland
    Dokumenttyp Case Reports ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2527218-4
    ISSN 2073-4425 ; 2073-4425
    ISSN (online) 2073-4425
    ISSN 2073-4425
    DOI 10.3390/genes13030470
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  6. Artikel ; Online: Temporal analysis of enhancers during mouse cerebellar development reveals dynamic and novel regulatory functions.

    Ramirez, Miguel / Badayeva, Yuliya / Yeung, Joanna / Wu, Joshua / Abdalla-Wyse, Ayasha / Yang, Erin / Trost, Brett / Scherer, Stephen W / Goldowitz, Daniel

    eLife

    2022  Band 11

    Abstract: We have identified active enhancers in the mouse cerebellum at embryonic and postnatal stages which provides a view of novel enhancers active during cerebellar development. The majority of cerebellar enhancers have dynamic activity between embryonic and ... ...

    Abstract We have identified active enhancers in the mouse cerebellum at embryonic and postnatal stages which provides a view of novel enhancers active during cerebellar development. The majority of cerebellar enhancers have dynamic activity between embryonic and postnatal development. Cerebellar enhancers were enriched for neural transcription factor binding sites with temporally specific expression. Putative gene targets displayed spatially restricted expression patterns, indicating cell-type specific expression regulation. Functional analysis of target genes indicated that enhancers regulate processes spanning several developmental epochs such as specification, differentiation and maturation. We use these analyses to discover one novel regulator and one novel marker of cerebellar development: Bhlhe22 and Pax3, respectively. We identified an enrichment of de novo mutations and variants associated with autism spectrum disorder in cerebellar enhancers. Furthermore, by comparing our data with relevant brain development ENCODE histone profiles and cerebellar single-cell datasets we have been able to generalize and expand on the presented analyses, respectively. We have made the results of our analyses available online in the Developing Mouse Cerebellum Enhancer Atlas, where our dataset can be efficiently queried, curated and exported by the scientific community to facilitate future research efforts. Our study provides a valuable resource for studying the dynamics of gene expression regulation by enhancers in the developing cerebellum and delivers a rich dataset of novel gene-enhancer associations providing a basis for future in-depth studies in the cerebellum.
    Mesh-Begriff(e) Animals ; Autism Spectrum Disorder/genetics ; Enhancer Elements, Genetic ; Gene Expression Regulation, Developmental ; Mice ; Neurogenesis/genetics ; Transcription Factors/metabolism
    Chemische Substanzen Transcription Factors
    Sprache Englisch
    Erscheinungsdatum 2022-08-09
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2687154-3
    ISSN 2050-084X ; 2050-084X
    ISSN (online) 2050-084X
    ISSN 2050-084X
    DOI 10.7554/eLife.74207
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  7. Artikel: Complex Autism Spectrum Disorder with Epilepsy, Strabismus and Self-Injurious Behaviors in a Patient with a De Novo Heterozygous POLR2A Variant

    Evans, Daniel R. / Qiao, Ying / Trost, Brett / Calli, Kristina / Martell, Sally / Jones, Steven J. M. / Scherer, Stephen W. / Lewis, M. E. Suzanne

    Genes. 2022 Mar. 07, v. 13, no. 3

    2022  

    Abstract: Autism spectrum disorder (ASD) describes a complex and heterogenous group of neurodevelopmental disorders. Whole genome sequencing continues to shed light on the multifactorial etiology of ASD. Dysregulated transcriptional pathways have been implicated ... ...

    Abstract Autism spectrum disorder (ASD) describes a complex and heterogenous group of neurodevelopmental disorders. Whole genome sequencing continues to shed light on the multifactorial etiology of ASD. Dysregulated transcriptional pathways have been implicated in neurodevelopmental disorders. Emerging evidence suggests that de novo POLR2A variants cause a newly described phenotype called ‘Neurodevelopmental Disorder with Hypotonia and Variable Intellectual and Behavioral Abnormalities’ (NEDHIB). The variable phenotype manifests with a spectrum of features; primarily early onset hypotonia and delay in developmental milestones. In this study, we investigate a patient with complex ASD involving epilepsy and strabismus. Whole genome sequencing of the proband–parent trio uncovered a novel de novo POLR2A variant (c.1367T>C, p. Val456Ala) in the proband. The variant appears deleterious according to in silico tools. We describe the phenotype in our patient, who is now 31 years old, draw connections between the previously reported phenotypes and further delineate this emerging neurodevelopmental phenotype. This study sheds new insights into this neurodevelopmental disorder, and more broadly, the genetic etiology of ASD.
    Schlagwörter autism ; computer simulation ; epilepsy ; etiology ; heterozygosity ; patients ; phenotype ; transcription (genetics)
    Sprache Englisch
    Erscheinungsverlauf 2022-0307
    Erscheinungsort Multidisciplinary Digital Publishing Institute
    Dokumenttyp Artikel
    ZDB-ID 2527218-4
    ISSN 2073-4425
    ISSN 2073-4425
    DOI 10.3390/genes13030470
    Datenquelle NAL Katalog (AGRICOLA)

    Zusatzmaterialien

    Kategorien

  8. Artikel ; Online: Technological advances for interrogating the human kinome.

    Baharani, Akanksha / Trost, Brett / Kusalik, Anthony / Napper, Scott

    Biochemical Society transactions

    2017  Band 45, Heft 1, Seite(n) 65–77

    Abstract: There is increasing appreciation among researchers and clinicians of the value of investigating biology and pathobiology at the level of cellular kinase (kinome) activity. Kinome analysis provides valuable opportunity to gain insights into complex ... ...

    Abstract There is increasing appreciation among researchers and clinicians of the value of investigating biology and pathobiology at the level of cellular kinase (kinome) activity. Kinome analysis provides valuable opportunity to gain insights into complex biology (including disease pathology), identify biomarkers of critical phenotypes (including disease prognosis and evaluation of therapeutic efficacy), and identify targets for therapeutic intervention through kinase inhibitors. The growing interest in kinome analysis has fueled efforts to develop and optimize technologies that enable characterization of phosphorylation-mediated signaling events in a cost-effective, high-throughput manner. In this review, we highlight recent advances to the central technologies currently available for kinome profiling and offer our perspectives on the key challenges remaining to be addressed.
    Mesh-Begriff(e) Animals ; Humans ; Phosphorylation ; Protein Array Analysis/methods ; Protein Kinases/metabolism ; Proteome/metabolism ; Proteomics/methods ; Reproducibility of Results ; Signal Transduction
    Chemische Substanzen Proteome ; Protein Kinases (EC 2.7.-)
    Sprache Englisch
    Erscheinungsdatum 2017-02-08
    Erscheinungsland England
    Dokumenttyp Journal Article ; Review
    ZDB-ID 184237-7
    ISSN 1470-8752 ; 0300-5127
    ISSN (online) 1470-8752
    ISSN 0300-5127
    DOI 10.1042/BST20160163
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  9. Artikel ; Online: The Phenotypic variability of 16p11.2 distal BP2-BP3 deletion in a transgenerational family and in neurodevelopmentally ascertained samples.

    Woodbury-Smith, Marc / D'Abate, Lia / Stavropoulos, Dimitri J / Howe, Jennifer / Drmic, Irene / Hoang, Ny / Zarrei, Mehdi / Trost, Brett / Iaboni, Alana / Anagnostou, Evdokia / Scherer, Stephen W

    Journal of medical genetics

    2023  Band 60, Heft 12, Seite(n) 1153–1160

    Abstract: Background: We present genomic and phenotypic findings of a transgenerational family consisting of three male offspring, each with a maternally inherited distal 220 kb deletion at locus 16p11.2 (BP2-BP3). Genomic analysis of all family members was ... ...

    Abstract Background: We present genomic and phenotypic findings of a transgenerational family consisting of three male offspring, each with a maternally inherited distal 220 kb deletion at locus 16p11.2 (BP2-BP3). Genomic analysis of all family members was prompted by a diagnosis of autism spectrum disorder (ASD) in the eldest child, who also presented with a low body mass index.
    Methods: All male offspring underwent extensive neuropsychiatric evaluation. Both parents were also assessed for social functioning and cognition. The family underwent whole-genome sequencing. Further data curation was undertaken from samples ascertained for neurodevelopmental disorders and congenital abnormalities.
    Results: On medical examination, both the second and third-born male offspring presented with obesity. The second-born male offspring met research diagnostic criteria for ASD at 8 years of age and presented with mild attention deficits. The third-born male offspring was only noted as having motor deficits and received a diagnosis of developmental coordination disorder. Other than the 16p11.2 distal deletion, no additional contributing variants of clinical significance were observed. The mother was clinically evaluated and noted as having a broader autism phenotype.
    Conclusion: In this family, the phenotypes observed are most likely caused by the 16p11.2 distal deletion. The lack of other overt pathogenic mutations identified by genomic sequencing reinforces the variable expressivity that should be heeded in a clinical setting. Importantly, distal 16p11.2 deletions can present with a highly variable phenotype even within a single family. Our additional data curation provides further evidence on the variable clinical presentation among those with pathogenetic 16p11.2 (BP2-BP3) mutations.
    Mesh-Begriff(e) Child ; Humans ; Male ; Chromosome Deletion ; Autism Spectrum Disorder/diagnosis ; Autism Spectrum Disorder/genetics ; Autistic Disorder/genetics ; Family ; Phenotype ; Biological Variation, Population ; Chromosomes, Human, Pair 16/genetics ; Intellectual Disability/diagnosis ; Intellectual Disability/genetics
    Sprache Englisch
    Erscheinungsdatum 2023-11-27
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 220881-7
    ISSN 1468-6244 ; 0022-2593
    ISSN (online) 1468-6244
    ISSN 0022-2593
    DOI 10.1136/jmg-2022-108818
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

    Zusatzmaterialien

    Kategorien

  10. Artikel: DAPPLE 2: a Tool for the Homology-Based Prediction of Post-Translational Modification Sites

    Trost, Brett / Maleki Farhad / Kusalik Anthony / Napper Scott

    Journal of Proteome Research. 2016 Aug. 05, v. 15, no. 8

    2016  

    Abstract: The post-translational modification of proteins is critical for regulating their function. Although many post-translational modification sites have been experimentally determined, particularly in certain model organisms, experimental knowledge of these ... ...

    Abstract The post-translational modification of proteins is critical for regulating their function. Although many post-translational modification sites have been experimentally determined, particularly in certain model organisms, experimental knowledge of these sites is severely lacking for many species. Thus, it is important to be able to predict sites of post-translational modification in such species. Previously, we described DAPPLE, a tool that facilitates the homology-based prediction of one particular post-translational modification, phosphorylation, in an organism of interest using known phosphorylation sites from other organisms. Here, we describe DAPPLE 2, which expands and improves upon DAPPLE in three major ways. First, it predicts sites for many post-translational modifications (20 different types) using data from several sources (15 online databases). Second, it has the ability to make predictions approximately 2–7 times faster than DAPPLE depending on the database size and the organism of interest. Third, it simplifies and accelerates the process of selecting predicted sites of interest by categorizing them based on gene ontology terms, keywords, and signaling pathways. We show that DAPPLE 2 can successfully predict known human post-translational modification sites using, as input, known sites from species that are either closely (e.g., mouse) or distantly (e.g., yeast) related to humans. DAPPLE 2 can be accessed at http://saphire.usask.ca/saphire/dapple2.
    Schlagwörter gene ontology ; humans ; mice ; models ; phosphorylation ; post-translational modification ; prediction ; proteins ; proteome ; signal transduction ; yeasts
    Sprache Englisch
    Erscheinungsverlauf 2016-0805
    Umfang p. 2760-2767.
    Erscheinungsort American Chemical Society
    Dokumenttyp Artikel
    ZDB-ID 2078618-9
    ISSN 1535-3907 ; 1535-3893
    ISSN (online) 1535-3907
    ISSN 1535-3893
    DOI 10.1021%2Facs.jproteome.6b00304
    Datenquelle NAL Katalog (AGRICOLA)

    Zusatzmaterialien

    Kategorien

Zum Seitenanfang