LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 13

Search options

  1. Article ; Online: The landscape of SETBP1 gene expression and transcription factor activity across human tissues.

    Whitlock, Jordan H / Wilk, Elizabeth J / Howton, Timothy C / Clark, Amanda D / Lasseigne, Brittany N

    PloS one

    2024  Volume 19, Issue 1, Page(s) e0296328

    Abstract: The SET binding protein 1 (SETBP1) gene encodes a transcription factor (TF) involved in various cellular processes. Variants in SETBP1 can result in three different diseases determined by the introduction (germline vs. somatic) and location of the ... ...

    Abstract The SET binding protein 1 (SETBP1) gene encodes a transcription factor (TF) involved in various cellular processes. Variants in SETBP1 can result in three different diseases determined by the introduction (germline vs. somatic) and location of the variant. Germline variants cause the ultra-rare pediatric Schinzel Giedion Syndrome (SGS) and SETBP1 haploinsufficiency disorder (SETBP1-HD), characterized by severe multisystemic abnormalities with neurodegeneration or a less severe brain phenotype accompanied by hypotonia and strabismus, respectively. Somatic variants in SETBP1 are associated with hematological malignancies and cancer development in other tissues in adults. To better understand the tissue-specific mechanisms involving SETBP1, we analyzed publicly available RNA-sequencing (RNA-seq) data from the Genotype-Tissue Expression (GTEx) project. We found SETBP1 and its known target genes were widely expressed across 31 adult human tissues. K-means clustering identified three distinct expression patterns of SETBP1 targets across tissues. Functional enrichment analysis (FEA) of each cluster revealed gene sets related to transcriptional regulation, DNA binding, and mitochondrial function. TF activity analysis of SETBP1 and its target TFs revealed tissue-specific TF activity, underscoring the role of tissue context-driven regulation and suggesting its impact in SETBP1-associated disease. In addition to uncovering tissue-specific molecular signatures of SETBP1 expression and TF activity, we provide a Shiny web application to facilitate exploring TF activity across human tissues for 758 TFs. This study provides insight into the landscape of SETBP1 expression and TF activity across 31 non-diseased human tissues and reveals tissue-specific expression and activity of SETBP1 and its targets. In conjunction with the web application we constructed, our framework enables researchers to generate hypotheses related to the role tissue backgrounds play with respect to gene expression and TF activity in different disease contexts.
    MeSH term(s) Humans ; Abnormalities, Multiple/genetics ; Carrier Proteins/genetics ; Carrier Proteins/metabolism ; Craniofacial Abnormalities/genetics ; Gene Expression ; Intellectual Disability/genetics ; Nuclear Proteins/genetics ; Nuclear Proteins/metabolism ; Transcription Factors/genetics ; Transcription Factors/metabolism
    Chemical Substances Carrier Proteins ; Nuclear Proteins ; SETBP1 protein, human ; Transcription Factors
    Language English
    Publishing date 2024-01-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0296328
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: Long-read RNA sequencing identifies region- and sex-specific C57BL/6J mouse brain mRNA isoform expression and usage.

    Jones, Emma F / Howton, Timothy C / Flanary, Victoria L / Clark, Amanda D / Lasseigne, Brittany N

    bioRxiv : the preprint server for biology

    2024  

    Abstract: Alternative splicing (AS) contributes to the biological heterogeneity between species, sexes, tissues, and cell types. Many diseases are either caused by alterations in AS or by alterations to AS. Therefore, measuring AS accurately and efficiently is ... ...

    Abstract Alternative splicing (AS) contributes to the biological heterogeneity between species, sexes, tissues, and cell types. Many diseases are either caused by alterations in AS or by alterations to AS. Therefore, measuring AS accurately and efficiently is critical for assessing molecular phenotypes, including those associated with disease. Long-read sequencing enables more accurate quantification of differentially spliced isoform expression than short-read sequencing approaches, and third-generation platforms facilitate high-throughput experiments. To assess differences in AS across the cerebellum, cortex, hippocampus, and striatum by sex, we generated and analyzed Oxford Nanopore Technologies (ONT) long-read RNA sequencing (lrRNA-Seq) C57BL/6J mouse brain cDNA libraries. From >85 million reads that passed quality control metrics, we calculated differential gene expression (DGE), differential transcript expression (DTE), and differential transcript usage (DTU) across brain regions and by sex. We found significant DGE, DTE, and DTU across brain regions and that the cerebellum had the most differences compared to the other three regions. Additionally, we found region-specific differential splicing between sexes, with the most sex differences in DTU in the cortex and no DTU in the hippocampus. We also report on two distinct patterns of sex DTU we observed, sex-divergent and sex-specific, that could potentially help explain sex differences in the prevalence and prognosis of various neurological and psychiatric disorders in future studies. Finally, we built a Shiny web application for researchers to explore the data further. Our study provides a resource for the community; it underscores the importance of AS in biological heterogeneity and the utility of long-read sequencing to better understand AS in the brain.
    Language English
    Publishing date 2024-01-11
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2024.01.11.575219
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: The landscape of

    Whitlock, Jordan H / Wilk, Elizabeth J / Howton, Timothy C / Clark, Amanda D / Lasseigne, Brittany N

    bioRxiv : the preprint server for biology

    2023  

    Abstract: Background: The SET binding protein 1 (: Results: To better understand the tissue-specific mechanisms involving : Conclusions: This study provides insight into the landscape ... ...

    Abstract Background: The SET binding protein 1 (
    Results: To better understand the tissue-specific mechanisms involving
    Conclusions: This study provides insight into the landscape of
    Language English
    Publishing date 2023-10-14
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2023.08.08.551337
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Computational Advancements in Cancer Combination Therapy Prediction.

    Flanary, Victoria L / Fisher, Jennifer L / Wilk, Elizabeth J / Howton, Timothy C / Lasseigne, Brittany N

    JCO precision oncology

    2023  Volume 7, Page(s) e2300261

    Abstract: Given the high attrition rate of de novo drug discovery and limited efficacy of single-agent therapies in cancer treatment, combination therapy prediction through in silico drug repurposing has risen as a time- and cost-effective alternative for ... ...

    Abstract Given the high attrition rate of de novo drug discovery and limited efficacy of single-agent therapies in cancer treatment, combination therapy prediction through in silico drug repurposing has risen as a time- and cost-effective alternative for identifying novel and potentially efficacious therapies for cancer. The purpose of this review is to provide an introduction to computational methods for cancer combination therapy prediction and to summarize recent studies that implement each of these methods. A systematic search of the PubMed database was performed, focusing on studies published within the past 10 years. Our search included reviews and articles of ongoing and retrospective studies. We prioritized articles with findings that suggest considerations for improving combination therapy prediction methods over providing a meta-analysis of all currently available cancer combination therapy prediction methods. Computational methods used for drug combination therapy prediction in cancer research include networks, regression-based machine learning, classifier machine learning models, and deep learning approaches. Each method class has its own advantages and disadvantages, so careful consideration is needed to determine the most suitable class when designing a combination therapy prediction method. Future directions to improve current combination therapy prediction technology include incorporation of disease pathobiology, drug characteristics, patient multiomics data, and drug-drug interactions to determine maximally efficacious and tolerable drug regimens for cancer. As computational methods improve in their capability to integrate patient, drug, and disease data, more comprehensive models can be developed to more accurately predict safe and efficacious combination drug therapies for cancer and other complex diseases.
    MeSH term(s) Humans ; Drug Discovery ; Machine Learning ; Meta-Analysis as Topic ; Neoplasms/drug therapy ; Retrospective Studies
    Language English
    Publishing date 2023-10-12
    Publishing country United States
    Document type Journal Article
    ISSN 2473-4284
    ISSN (online) 2473-4284
    DOI 10.1200/PO.23.00261
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article: Altered Glia-Neuron Communication in Alzheimer's Disease Affects WNT, p53, and NFkB Signaling Determined by snRNA-seq.

    Soelter, Tabea M / Howton, Timothy C / Clark, Amanda D / Oza, Vishal H / Lasseigne, Brittany N

    bioRxiv : the preprint server for biology

    2023  

    Abstract: Background: Alzheimer's disease is the most common cause of dementia and is characterized by amyloid-β plaques, tau neurofibrillary tangles, and neuronal loss. Although neuronal loss is a primary hallmark of Alzheimer's disease, it is known that non- ... ...

    Abstract Background: Alzheimer's disease is the most common cause of dementia and is characterized by amyloid-β plaques, tau neurofibrillary tangles, and neuronal loss. Although neuronal loss is a primary hallmark of Alzheimer's disease, it is known that non-neuronal cell populations are ultimately responsible for maintaining brain homeostasis and neuronal health through neuron-glia and glial cell crosstalk. Many signaling pathways have been proposed to be dysregulated in Alzheimer's disease, including WNT, TGFβ, p53, mTOR, NFkB, and Pi3k/Akt signaling. Here, we predict altered cell-cell communication between glia and neurons.
    Methods: Using public snRNA-sequencing data generated from postmortem human prefrontal cortex, we predicted altered cell-cell communication between glia (astrocytes, microglia, oligodendrocytes, and oligodendrocyte progenitor cells) and neurons (excitatory and inhibitory). We confirmed interactions in an independent orthogonal dataset. We determined cell-type-specificity using Jaccard Similarity Index and investigated the downstream effects of altered interactions in inhibitory neurons through gene expression and transcription factor activity analyses of signaling mediators. Finally, we determined changes in pathway activity in inhibitory neurons.
    Results: Cell-cell communication between glia and neurons is altered in Alzheimer's disease in a cell-type-specific manner. As expected, ligands are more cell-type-specific than receptors and targets. We validated 51 ligand-receptor pairs in an independent dataset that included two known Alzheimer's disease risk genes:
    Conclusions: Cell-cell communication between glia and neurons in Alzheimer's disease is altered in a cell-type-specific manner involving Alzheimer's disease risk genes. Signaling mediators had altered transcription factor activity suggesting altered glia-neuron interactions may dysregulate signaling pathways including WNT, p53, and NFkB in inhibitory neurons.
    Language English
    Publishing date 2023-12-01
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2023.11.29.569304
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Cell-type-specific gene expression and regulation in the cerebral cortex and kidney of atypical Setbp1

    Whitlock, Jordan H / Soelter, Tabea M / Howton, Timothy C / Wilk, Elizabeth J / Oza, Vishal H / Lasseigne, Brittany N

    Journal of cellular and molecular medicine

    2023  Volume 27, Issue 22, Page(s) 3565–3577

    Abstract: Schinzel Giedion Syndrome (SGS) is an ultra-rare autosomal dominant Mendelian disease presenting with abnormalities spanning multiple organ systems. The most notable phenotypes involve severe developmental delay, progressive brain atrophy, and drug- ... ...

    Abstract Schinzel Giedion Syndrome (SGS) is an ultra-rare autosomal dominant Mendelian disease presenting with abnormalities spanning multiple organ systems. The most notable phenotypes involve severe developmental delay, progressive brain atrophy, and drug-resistant seizures. SGS is caused by spontaneous variants in SETBP1, which encodes for the epigenetic hub SETBP1 transcription factor (TF). SETBP1 variants causing classical SGS cluster at the degron, disrupting SETBP1 protein degradation and resulting in toxic accumulation, while those located outside cause milder atypical SGS. Due to the multisystem phenotype, we evaluated gene expression and regulatory programs altered in atypical SGS by snRNA-seq of the cerebral cortex and kidney of Setbp1
    MeSH term(s) Humans ; Animals ; Mice ; Abnormalities, Multiple/genetics ; Abnormalities, Multiple/pathology ; Kidney/pathology ; Cerebral Cortex/pathology ; Gene Expression
    Language English
    Publishing date 2023-10-23
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2074559-X
    ISSN 1582-4934 ; 1582-4934 ; 1582-1838
    ISSN (online) 1582-4934
    ISSN 1582-4934 ; 1582-1838
    DOI 10.1111/jcmm.18001
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Signature reversion of three disease-associated gene signatures prioritizes cancer drug repurposing candidates.

    Fisher, Jennifer L / Wilk, Elizabeth J / Oza, Vishal H / Gary, Sam E / Howton, Timothy C / Flanary, Victoria L / Clark, Amanda D / Hjelmeland, Anita B / Lasseigne, Brittany N

    FEBS open bio

    2024  Volume 14, Issue 5, Page(s) 803–830

    Abstract: Drug repurposing is promising because approving a drug for a new indication requires fewer resources than approving a new drug. Signature reversion detects drug perturbations most inversely related to the disease-associated gene signature to identify ... ...

    Abstract Drug repurposing is promising because approving a drug for a new indication requires fewer resources than approving a new drug. Signature reversion detects drug perturbations most inversely related to the disease-associated gene signature to identify drugs that may reverse that signature. We assessed the performance and biological relevance of three approaches for constructing disease-associated gene signatures (i.e., limma, DESeq2, and MultiPLIER) and prioritized the resulting drug repurposing candidates for four low-survival human cancers. Our results were enriched for candidates that had been used in clinical trials or performed well in the PRISM drug screen. Additionally, we found that pamidronate and nimodipine, drugs predicted to be efficacious against the brain tumor glioblastoma (GBM), inhibited the growth of a GBM cell line and cells isolated from a patient-derived xenograft (PDX). Our results demonstrate that by applying multiple disease-associated gene signature methods, we prioritized several drug repurposing candidates for low-survival cancers.
    MeSH term(s) Drug Repositioning/methods ; Humans ; Antineoplastic Agents/pharmacology ; Animals ; Cell Line, Tumor ; Mice ; Glioblastoma/genetics ; Glioblastoma/drug therapy ; Glioblastoma/pathology ; Gene Expression Profiling ; Xenograft Model Antitumor Assays ; Gene Expression Regulation, Neoplastic/drug effects ; Brain Neoplasms/genetics ; Brain Neoplasms/drug therapy ; Brain Neoplasms/pathology ; Neoplasms/genetics ; Neoplasms/drug therapy ; Transcriptome/genetics ; Transcriptome/drug effects
    Chemical Substances Antineoplastic Agents
    Language English
    Publishing date 2024-03-26
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2651702-4
    ISSN 2211-5463 ; 2211-5463
    ISSN (online) 2211-5463
    ISSN 2211-5463
    DOI 10.1002/2211-5463.13796
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Ten simple rules for using public biological data for your research.

    Oza, Vishal H / Whitlock, Jordan H / Wilk, Elizabeth J / Uno-Antonison, Angelina / Wilk, Brandon / Gajapathy, Manavalan / Howton, Timothy C / Trull, Austyn / Ianov, Lara / Worthey, Elizabeth A / Lasseigne, Brittany N

    PLoS computational biology

    2023  Volume 19, Issue 1, Page(s) e1010749

    Abstract: With an increasing amount of biological data available publicly, there is a need for a guide on how to successfully download and use this data. The 10 simple rules for using public biological data are: (1) use public data purposefully in your research; ( ... ...

    Abstract With an increasing amount of biological data available publicly, there is a need for a guide on how to successfully download and use this data. The 10 simple rules for using public biological data are: (1) use public data purposefully in your research; (2) evaluate data for your use case; (3) check data reuse requirements and embargoes; (4) be aware of ethics for data reuse; (5) plan for data storage and compute requirements; (6) know what you are downloading; (7) download programmatically and verify integrity; (8) properly cite data; (9) make reprocessed data and models Findable, Accessible, Interoperable, and Reusable (FAIR) and share; and (10) make pipelines and code FAIR and share. These rules are intended as a guide for researchers wanting to make use of available data and to increase data reuse and reproducibility.
    MeSH term(s) Reproducibility of Results ; Information Storage and Retrieval
    Language English
    Publishing date 2023-01-05
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2193340-6
    ISSN 1553-7358 ; 1553-734X
    ISSN (online) 1553-7358
    ISSN 1553-734X
    DOI 10.1371/journal.pcbi.1010749
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Prioritized polycystic kidney disease drug targets and repurposing candidates from pre-cystic and cystic mouse Pkd2 model gene expression reversion.

    Wilk, Elizabeth J / Howton, Timothy C / Fisher, Jennifer L / Oza, Vishal H / Brownlee, Ryan T / McPherson, Kasi C / Cleary, Hannah L / Yoder, Bradley K / George, James F / Mrug, Michal / Lasseigne, Brittany N

    Molecular medicine (Cambridge, Mass.)

    2023  Volume 29, Issue 1, Page(s) 67

    Abstract: Background: Autosomal dominant polycystic kidney disease (ADPKD) is one of the most prevalent monogenic human diseases. It is mostly caused by pathogenic variants in PKD1 or PKD2 genes that encode interacting transmembrane proteins polycystin-1 (PC1) ... ...

    Abstract Background: Autosomal dominant polycystic kidney disease (ADPKD) is one of the most prevalent monogenic human diseases. It is mostly caused by pathogenic variants in PKD1 or PKD2 genes that encode interacting transmembrane proteins polycystin-1 (PC1) and polycystin-2 (PC2). Among many pathogenic processes described in ADPKD, those associated with cAMP signaling, inflammation, and metabolic reprogramming appear to regulate the disease manifestations. Tolvaptan, a vasopressin receptor-2 antagonist that regulates cAMP pathway, is the only FDA-approved ADPKD therapeutic. Tolvaptan reduces renal cyst growth and kidney function loss, but it is not tolerated by many patients and is associated with idiosyncratic liver toxicity. Therefore, additional therapeutic options for ADPKD treatment are needed.
    Methods: As drug repurposing of FDA-approved drug candidates can significantly decrease the time and cost associated with traditional drug discovery, we used the computational approach signature reversion to detect inversely related drug response gene expression signatures from the Library of Integrated Network-Based Cellular Signatures (LINCS) database and identified compounds predicted to reverse disease-associated transcriptomic signatures in three publicly available Pkd2 kidney transcriptomic data sets of mouse ADPKD models. We focused on a pre-cystic model for signature reversion, as it was less impacted by confounding secondary disease mechanisms in ADPKD, and then compared the resulting candidates' target differential expression in the two cystic mouse models. We further prioritized these drug candidates based on their known mechanism of action, FDA status, targets, and by functional enrichment analysis.
    Results: With this in-silico approach, we prioritized 29 unique drug targets differentially expressed in Pkd2 ADPKD cystic models and 16 prioritized drug repurposing candidates that target them, including bromocriptine and mirtazapine, which can be further tested in-vitro and in-vivo.
    Conclusion: Collectively, these results indicate drug targets and repurposing candidates that may effectively treat pre-cystic as well as cystic ADPKD.
    MeSH term(s) Animals ; Humans ; Mice ; Drug Repositioning ; Gene Expression ; Kidney/metabolism ; Polycystic Kidney Diseases/drug therapy ; Polycystic Kidney Diseases/genetics ; Polycystic Kidney Diseases/complications ; Polycystic Kidney, Autosomal Dominant/drug therapy ; Polycystic Kidney, Autosomal Dominant/genetics ; Tolvaptan/pharmacology ; Tolvaptan/therapeutic use ; TRPP Cation Channels/genetics ; TRPP Cation Channels/metabolism
    Chemical Substances Tolvaptan (21G72T1950) ; TRPP Cation Channels
    Language English
    Publishing date 2023-05-22
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 1283676-x
    ISSN 1528-3658 ; 1076-1551
    ISSN (online) 1528-3658
    ISSN 1076-1551
    DOI 10.1186/s10020-023-00664-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Map of physical interactions between extracellular domains of Arabidopsis leucine-rich repeat receptor kinases.

    Mott, G Adam / Smakowska-Luzan, Elwira / Pasha, Asher / Parys, Katarzyna / Howton, Timothy C / Neuhold, Jana / Lehner, Anita / Grünwald, Karin / Stolt-Bergner, Peggy / Provart, Nicholas J / Mukhtar, M Shahid / Desveaux, Darrell / Guttman, David S / Belkhadir, Youssef

    Scientific data

    2019  Volume 6, Page(s) 190025

    Abstract: Plants use surface receptors to perceive information about many aspects of their local environment. These receptors physically interact to form both steady state and signalling competent complexes. The signalling events downstream of receptor activation ... ...

    Abstract Plants use surface receptors to perceive information about many aspects of their local environment. These receptors physically interact to form both steady state and signalling competent complexes. The signalling events downstream of receptor activation impact both plant developmental and immune responses. Here, we present a comprehensive study of the physical interactions between the extracellular domains of leucine-rich repeat receptor kinases (LRR-RKs) in Arabidopsis. Using a sensitized assay, we tested reciprocal interactions among 200 of the 225 Arabidopsis LRR-RKs for a total search space of 40,000 interactions. Applying a stringent statistical cut-off and requiring that interactions performed well in both bait-prey and prey-bait orientations resulted in a high-confidence set of 567 bidirectional interactions. Additionally, we identified a total of 2,586 unidirectional interactions, which passed our stringent statistical cut-off in only one orientation. These datasets will guide further investigation into the regulatory roles of LRR-RKs in plant developmental and immune signalling decisions.
    MeSH term(s) Arabidopsis Proteins/chemistry ; Protein Domains ; Protein Interaction Mapping/methods ; Protein Kinases/chemistry ; Protein Kinases/physiology ; Proteins
    Chemical Substances Arabidopsis Proteins ; Proteins ; leucine-rich repeat proteins ; Protein Kinases (EC 2.7.-)
    Language English
    Publishing date 2019-02-26
    Publishing country England
    Document type Dataset ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2775191-0
    ISSN 2052-4463 ; 2052-4463
    ISSN (online) 2052-4463
    ISSN 2052-4463
    DOI 10.1038/sdata.2019.25
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top