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  1. Article ; Online: Transcriptomic study of anastasis for reversal of ethanol-induced apoptosis in mouse primary liver cells.

    Tang, Ho Man / Talbot, C Conover / Fung, Ming Chiu / Tang, Ho Lam

    Scientific data

    2022  Volume 9, Issue 1, Page(s) 418

    Abstract: Anastasis is a cell recovery mechanism that rescues dying cells from the brink of death. Reversal of apoptosis is the first example of anastasis. Here, we describe a comprehensive dataset containing time-course mRNA expression profiles for reversal of ... ...

    Abstract Anastasis is a cell recovery mechanism that rescues dying cells from the brink of death. Reversal of apoptosis is the first example of anastasis. Here, we describe a comprehensive dataset containing time-course mRNA expression profiles for reversal of ethanol-induced apoptosis in mouse primary liver cells in νitro. This transcriptome dataset includes the conditions of the untreated cells, cells undergoing apoptosis triggered by incubating with cell death inducer of 4.5% ethanol for 5 hours, and apoptosis reversal of ethanol-induced cells at the early (3
    MeSH term(s) Animals ; Apoptosis ; Cell Death Reversal ; Ethanol/pharmacology ; Liver/drug effects ; Liver/metabolism ; Liver/pathology ; Mice ; Transcriptome
    Chemical Substances Ethanol (3K9958V90M)
    Language English
    Publishing date 2022-07-18
    Publishing country England
    Document type Dataset ; Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2775191-0
    ISSN 2052-4463 ; 2052-4463
    ISSN (online) 2052-4463
    ISSN 2052-4463
    DOI 10.1038/s41597-022-01470-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Presence of Uterine Leiomyomas Has No Significant Impact on Gene Expression Profile in the Scalp of Patients with Central Centrifugal Cicatricial Alopecia.

    Jamerson, Taylor A / Talbot, C Conover / Dina, Yemisi / Aguh, Crystal

    JID innovations

    2021  Volume 2, Issue 1, Page(s) 100060

    Abstract: Central centrifugal cicatricial alopecia (CCCA) is associated with increased expression of genes implicated in fibroproliferative disorders and a higher prevalence of uterine leiomyomas (ULs) among affected individuals. We sought to examine the effect of ...

    Abstract Central centrifugal cicatricial alopecia (CCCA) is associated with increased expression of genes implicated in fibroproliferative disorders and a higher prevalence of uterine leiomyomas (ULs) among affected individuals. We sought to examine the effect of UL status on the gene expression profile of the lesional scalp in patients with CCCA. Scalp biopsy was obtained from 16 patients with a confirmed diagnosis of CCCA between 2017 and 2020. Microarray analysis was used to identify differential gene expression between patients with CCCA with a history of UL and those without the history. Of more than 20,000 genes analyzed, 23 of 25 genes with the highest expression in patients with CCCA with UL held no statistical significance. No genes previously implicated in fibroproliferative disorders were found among the upregulated transcripts. Of all genes analyzed, only eight upregulated genes and zero downregulated genes had a fold change in expression >2 in patients with CCCA with UL compared with those in patients with CCCA without UL. Our findings highlight similar gene expression patterns in the lesional scalp of patients with CCCA with and without a history of UL. This analysis is key in highlighting no evidence of causational or linked mechanobiology that accounts for the increased prevalence of UL seen in patients with CCCA that previous studies have not addressed.
    Language English
    Publishing date 2021-10-06
    Publishing country United States
    Document type Journal Article
    ISSN 2667-0267
    ISSN (online) 2667-0267
    DOI 10.1016/j.xjidi.2021.100060
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Hypereosinophilia causes progressive cardiac pathologies in mice.

    Diny, Nicola Laura / Wood, Megan Kay / Won, Taejoon / Talor, Monica Vladut / Lukban, Clarisse / Bedja, Djahida / Wang, Nadan / Kalinoski, Hannah / Daoud, Abdel / Talbot, C Conover / Leei Lin, Brian / Čiháková, Daniela

    iScience

    2023  Volume 26, Issue 10, Page(s) 107990

    Abstract: Hypereosinophilic syndrome is a progressive disease with extensive eosinophilia that results in organ damage. Cardiac pathologies are the main reason for its high mortality rate. A better understanding of the mechanisms of eosinophil-mediated tissue ... ...

    Abstract Hypereosinophilic syndrome is a progressive disease with extensive eosinophilia that results in organ damage. Cardiac pathologies are the main reason for its high mortality rate. A better understanding of the mechanisms of eosinophil-mediated tissue damage would benefit therapeutic development. Here, we describe the cardiac pathologies that developed in a mouse model of hypereosinophilic syndrome. These IL-5 transgenic mice exhibited decreased left ventricular function at a young age which worsened with age. Mechanistically, we demonstrated infiltration of activated eosinophils into the heart tissue that led to an inflammatory environment. Gene expression signatures showed tissue damage as well as repair and remodeling processes. Cardiomyocytes from IL-5Tg mice exhibited significantly reduced contractility relative to wild type (WT) controls. This impairment may result from the inflammatory stress experienced by the cardiomyocytes and suggest that dysregulation of contractility and Ca
    Language English
    Publishing date 2023-09-21
    Publishing country United States
    Document type Journal Article
    ISSN 2589-0042
    ISSN (online) 2589-0042
    DOI 10.1016/j.isci.2023.107990
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Decoding Angiotensin Receptors: TOMAHAQ-Based Detection and Quantification of Angiotensin Type-1 and Type-2 Receptors.

    Cosarderelioglu, Caglar / Kreimer, Simion / Plaza-Rodriguez, Alma I / Iglesias, Pablo A / Talbot, C Conover / Siragy, Helmy M / Carey, Robert M / Ubaida-Mohien, Ceereena / O'Rourke, Brian / Ferrucci, Luigi / Bennett, David A / Walston, Jeremy / Abadir, Peter

    Journal of the American Heart Association

    2023  Volume 12, Issue 18, Page(s) e030791

    Abstract: Background The renin-angiotensin system plays a crucial role in human physiology, and its main hormone, angiotensin, activates 2 G-protein-coupled receptors, the angiotensin type-1 and type-2 receptors, in almost every organ. However, controversy exists ... ...

    Abstract Background The renin-angiotensin system plays a crucial role in human physiology, and its main hormone, angiotensin, activates 2 G-protein-coupled receptors, the angiotensin type-1 and type-2 receptors, in almost every organ. However, controversy exists about the location, distribution, and expression levels of these receptors. Concerns have been raised over the low sensitivity, low specificity, and large variability between lots of commercially available antibodies for angiotensin type-1 and type-2 receptors, which makes it difficult to reconciliate results of different studies. Here, we describe the first non-antibody-based sensitive and specific targeted quantitative mass spectrometry assay for angiotensin receptors. Methods and Results Using a technique that allows targeted analysis of multiple peptides across multiple samples in a single mass spectrometry analysis, known as TOMAHAQ (triggered by offset, multiplexed, accurate mass, high resolution, and absolute quantification), we have identified and validated specific human tryptic peptides that permit identification and quantification of angiotensin type-1 and type-2 receptors in biological samples. Several peptide sequences are conserved in rodents, making these mass spectrometry assays amenable to both preclinical and clinical studies. We have used this method to quantify angiotensin type-1 and type-2 receptors in postmortem frontal cortex samples of older adults (n=28) with Alzheimer dementia. We correlated levels of angiotensin receptors to biomarkers classically linked to renin-angiotensin system activation, including oxidative stress, inflammation, amyloid-β load, and paired helical filament-tau tangle burden. Conclusions These robust high-throughput assays will not only catalyze novel mechanistic studies in the angiotensin research field but may also help to identify patients with an unbalanced angiotensin receptor distribution who would benefit from angiotensin receptor blocker treatment.
    MeSH term(s) Humans ; Aged ; Angiotensins ; Receptors, Angiotensin ; Renin-Angiotensin System ; Angiotensin Receptor Antagonists ; Antibodies
    Chemical Substances Angiotensins ; Receptors, Angiotensin ; Angiotensin Receptor Antagonists ; Antibodies
    Language English
    Publishing date 2023-09-08
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2653953-6
    ISSN 2047-9980 ; 2047-9980
    ISSN (online) 2047-9980
    ISSN 2047-9980
    DOI 10.1161/JAHA.123.030791
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: The Interaction of Borrelia burgdorferi with Human Dendritic Cells: Functional Implications.

    Gutierrez-Hoffmann, Maria / Fan, Jinshui / O'Meally, Robert N / Cole, Robert N / Florea, Liliana / Antonescu, Corina / Talbot, C Conover / Tiniakou, Eleni / Darrah, Erika / Soloski, Mark J

    Journal of immunology (Baltimore, Md. : 1950)

    2023  Volume 211, Issue 4, Page(s) 612–625

    Abstract: Dendritic cells bridge the innate and adaptive immune responses by serving as sensors of infection and as the primary APCs responsible for the initiation of the T cell response against invading pathogens. The naive T cell activation requires the ... ...

    Abstract Dendritic cells bridge the innate and adaptive immune responses by serving as sensors of infection and as the primary APCs responsible for the initiation of the T cell response against invading pathogens. The naive T cell activation requires the following three key signals to be delivered from dendritic cells: engagement of the TCR by peptide Ags bound to MHC molecules (signal 1), engagement of costimulatory molecules on both cell types (signal 2), and expression of polarizing cytokines (signal 3). Initial interactions between Borrelia burgdorferi, the causative agent of Lyme disease, and dendritic cells remain largely unexplored. To address this gap in knowledge, we cultured live B. burgdorferi with monocyte-derived dendritic cells (mo-DCs) from healthy donors to examine the bacterial immunopeptidome associated with HLA-DR. In parallel, we examined changes in the expression of key costimulatory and regulatory molecules as well as profiled the cytokines released by dendritic cells when exposed to live spirochetes. RNA-sequencing studies on B. burgdorferi-pulsed dendritic cells show a unique gene expression signature associated with B. burgdorferi stimulation that differs from stimulation with lipoteichoic acid, a TLR2 agonist. These studies revealed that exposure of mo-DCs to live B. burgdorferi drives the expression of both pro- and anti-inflammatory cytokines as well as immunoregulatory molecules (e.g., PD-L1, IDO1, Tim3). Collectively, these studies indicate that the interaction of live B. burgdorferi with mo-DCs promotes a unique mature DC phenotype that likely impacts the nature of the adaptive T cell response generated in human Lyme disease.
    MeSH term(s) Humans ; Borrelia burgdorferi ; Dendritic Cells ; Lyme Disease ; T-Lymphocytes/metabolism ; Cytokines/metabolism
    Chemical Substances Cytokines
    Language English
    Publishing date 2023-07-05
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 3056-9
    ISSN 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381
    ISSN (online) 1550-6606
    ISSN 0022-1767 ; 1048-3233 ; 1047-7381
    DOI 10.4049/jimmunol.2300235
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Fibroproliferative genes are preferentially expressed in central centrifugal cicatricial alopecia.

    Aguh, Crystal / Dina, Yemisi / Talbot, C Conover / Garza, Luis

    Journal of the American Academy of Dermatology

    2018  Volume 79, Issue 5, Page(s) 904–912.e1

    Abstract: Background: Central centrifugal cicatricial alopecia (CCCA) is a primary cicatricial alopecia that most commonly affects women of African descent. Like CCCA, fibroproliferative disorders (FPDs) such as keloids, atherosclerosis, and fibroids are ... ...

    Abstract Background: Central centrifugal cicatricial alopecia (CCCA) is a primary cicatricial alopecia that most commonly affects women of African descent. Like CCCA, fibroproliferative disorders (FPDs) such as keloids, atherosclerosis, and fibroids are characterized by low-grade inflammation and irritation, resulting in end-stage fibrosis.
    Objective: We sought to determine whether fibroproliferative genes were up-regulated in patients with CCCA.
    Methods: A total of 5 patients with biopsy-proven CCCA were recruited for this study. Two scalp biopsy specimens were obtained from each patient; 1 from CCCA-affected vertex scalp and 1 from the unaffected occipital scalp. Microarray analysis was performed to determine the differential gene expression patterns.
    Results: There was an upregulation of genes implicated in FPDs in patients with CCCA. Specifically, we noted increased expression of platelet derived growth factor gene (PDGF), collagen I gene (COL I), collagen III gene (COL III), matrix metallopeptidase 1 gene (MMP1), matrix metallopeptidase 2 gene (MMP2), matrix metallopeptidase 7 gene (MMP7), and matrix metallopeptidase 9 gene (MMP9) in affected scalp compared with in unaffected scalp. Significant overlap in the canonic pathways was noted between patients with CCCA and patients with both atherosclerosis and hepatic fibrosis (P < .001).
    Limitations: Small sample size and the use of whole skin tissue for analysis.
    Conclusion: We have identified the upregulation of critical genes implicated in FPDs in the gene expression profile of patients with CCCA. These findings may help identify future therapeutic targets for this otherwise difficult-to-treat condition.
    MeSH term(s) Adult ; Aged ; Alopecia/genetics ; Alopecia/pathology ; Biopsy, Needle ; Cicatrix/genetics ; Cicatrix/pathology ; Female ; Genetic Predisposition to Disease ; Humans ; Immunohistochemistry ; Male ; Middle Aged ; Platelet-Derived Growth Factor/genetics ; Prognosis ; Risk Assessment ; Sampling Studies ; Up-Regulation
    Chemical Substances Platelet-Derived Growth Factor ; platelet-derived growth factor A
    Language English
    Publishing date 2018-06-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 603641-7
    ISSN 1097-6787 ; 0190-9622
    ISSN (online) 1097-6787
    ISSN 0190-9622
    DOI 10.1016/j.jaad.2018.05.1257
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Cigarette Smoke Triggers Loss of Corneal Endothelial Cells and Disruption of Descemet's Membrane Proteins in Mice.

    Ali, Muhammad / Khan, Shahid Y / Jang, Yura / Na, Chan Hyun / Talbot, C Conover / Gottsch, John D / Handa, James T / Riazuddin, S Amer

    Investigative ophthalmology & visual science

    2021  Volume 62, Issue 3, Page(s) 3

    Abstract: Purpose: To investigate changes at a molecular level in the mouse corneal endothelium (CE) exposed to chronic cigarette smoke (CS).: Methods: Pregnant mice (gestation days 18-20) were placed in a whole-body exposure smoking chamber, and a few days ... ...

    Abstract Purpose: To investigate changes at a molecular level in the mouse corneal endothelium (CE) exposed to chronic cigarette smoke (CS).
    Methods: Pregnant mice (gestation days 18-20) were placed in a whole-body exposure smoking chamber, and a few days later pups were born. After 3.5 months of CS exposure, a ConfoScan4 scanning microscope was used to examine the corneal endothelial cells (CECs) of CS-exposed and control (Ct) mice. The CE was peeled under a microscope and maintained as four biological replicates (two male and two female) for CS-exposed and Ct mice; each replicate consisted of 16 CEs. The proteome of the CE was investigated through mass spectrometry.
    Results: The CE images of CS-exposed and Ct mice revealed a difference in the shape of CECs accompanied by a nearly 10% decrease in CEC density (P < 0.00003) following CS exposure. Proteome profiling identified a total of 524 proteins exhibiting statistically significant changes in CE from CS-exposed mice. Importantly, proteins associated with Descemet's membrane (DM), including COL4α1, COL4α2, COL4α3, COL4α4, COL4α5, COL4α6, COL8α1, COL8α2, and FN1, among others, exhibited diminished protein levels in the CE of CS-exposed mice.
    Conclusions: Our data confirm that exposure to CS results in reduced CEC density accompanied by diminished levels of multiple collagen and extracellular matrix proteins associated with DM.
    MeSH term(s) Animals ; Atmosphere Exposure Chambers ; Cigarette Smoking/adverse effects ; Corneal Endothelial Cell Loss/etiology ; Corneal Endothelial Cell Loss/metabolism ; Corneal Endothelial Cell Loss/pathology ; Descemet Membrane/metabolism ; Eye Proteins/metabolism ; Female ; Male ; Mass Spectrometry ; Mice ; Mice, Inbred C57BL ; Microscopy, Confocal ; Pregnancy ; Pregnancy, Animal ; Proteome/metabolism
    Chemical Substances Eye Proteins ; Proteome
    Language English
    Publishing date 2021-03-02
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 391794-0
    ISSN 1552-5783 ; 0146-0404
    ISSN (online) 1552-5783
    ISSN 0146-0404
    DOI 10.1167/iovs.62.3.3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Molecular signature of anastasis for reversal of apoptosis.

    Tang, Ho Man / Talbot, C Conover / Fung, Ming Chiu / Tang, Ho Lam

    F1000Research

    2017  Volume 6, Page(s) 43

    Abstract: Anastasis (Greek for "rising to life") is a cell recovery phenomenon that rescues dying cells from the brink of cell death. We recently discovered anastasis to occur after the execution-stage of ... ...

    Abstract Anastasis (Greek for "rising to life") is a cell recovery phenomenon that rescues dying cells from the brink of cell death. We recently discovered anastasis to occur after the execution-stage of apoptosis
    Language English
    Publishing date 2017
    Publishing country England
    Document type Journal Article
    ZDB-ID 2699932-8
    ISSN 2046-1402
    ISSN 2046-1402
    DOI 10.12688/f1000research.10568.2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: The XIST lncRNA is a sex-specific reservoir of TLR7 ligands in SLE.

    Crawford, Jonathan D / Wang, Hong / Trejo-Zambrano, Daniela / Cimbro, Raffaello / Talbot, C Conover / Thomas, Mekha A / Curran, Ashley M / Girgis, Alexander A / Schroeder, John T / Fava, Andrea / Goldman, Daniel W / Petri, Michelle / Rosen, Antony / Antiochos, Brendan / Darrah, Erika

    JCI insight

    2023  Volume 8, Issue 20

    Abstract: Systemic lupus erythematosus (SLE) is a systemic autoimmune disease with a dramatic sex bias, affecting 9 times more women than men. Activation of Toll-like receptor 7 (TLR7) by self-RNA is a central pathogenic process leading to aberrant production of ... ...

    Abstract Systemic lupus erythematosus (SLE) is a systemic autoimmune disease with a dramatic sex bias, affecting 9 times more women than men. Activation of Toll-like receptor 7 (TLR7) by self-RNA is a central pathogenic process leading to aberrant production of type I interferon (IFN) in SLE, but the specific RNA molecules that serve as TLR7 ligands have not been defined. By leveraging gene expression data and the known sequence specificity of TLR7, we identified the female-specific X-inactive specific transcript (XIST) long noncoding RNA as a uniquely rich source of TLR7 ligands in SLE. XIST RNA stimulated IFN-α production by plasmacytoid DCs in a TLR7-dependent manner, and deletion of XIST diminished the ability of whole cellular RNA to activate TLR7. XIST levels were elevated in blood leukocytes from women with SLE compared with controls, correlated positively with disease activity and the IFN signature, and were enriched in extracellular vesicles released from dying cells in vitro. Importantly, XIST was not IFN inducible, suggesting that XIST is a driver, rather than a consequence, of IFN in SLE. Overall, our work elucidated a role for XIST RNA as a female sex-specific danger signal underlying the sex bias in SLE.
    MeSH term(s) Male ; Humans ; Female ; RNA, Long Noncoding/genetics ; Toll-Like Receptor 7 ; Lupus Erythematosus, Systemic ; Interferon Type I/genetics ; Gene Expression ; Ligands
    Chemical Substances RNA, Long Noncoding ; Toll-Like Receptor 7 ; Interferon Type I ; Ligands ; TLR7 protein, human
    Language English
    Publishing date 2023-09-21
    Publishing country United States
    Document type Journal Article
    ISSN 2379-3708
    ISSN (online) 2379-3708
    DOI 10.1172/jci.insight.169344
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Genome-wide expression analysis comparing hypertrophic changes in normal and dysferlinopathy mice.

    Lee, Yun-Sil / Talbot, C Conover / Lee, Se-Jin

    Genomics data

    2015  Volume 6, Page(s) 253–257

    Abstract: Because myostatin normally limits skeletal muscle growth, there are extensive efforts to develop myostatin inhibitors for clinical use. One potential concern is that in muscle degenerative diseases, inducing hypertrophy may increase stress on dystrophic ... ...

    Abstract Because myostatin normally limits skeletal muscle growth, there are extensive efforts to develop myostatin inhibitors for clinical use. One potential concern is that in muscle degenerative diseases, inducing hypertrophy may increase stress on dystrophic fibers. Our study shows that blocking this pathway in dysferlin deficient mice results in early improvement in histopathology but ultimately accelerates muscle degeneration. Hence, benefits of this approach should be weighed against these potential detrimental effects. Here, we present detailed experimental methods and analysis for the gene expression profiling described in our recently published study in Human Molecular Genetics (Lee et al., 2015). Our data sets have been deposited in the Gene Expression Omnibus (GEO) database (GSE62945) and are available at http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE62945. Our data provide a resource for exploring molecular mechanisms that are related to hypertrophy-induced, accelerated muscular degeneration in dysferlinopathy.
    Language English
    Publishing date 2015-10-24
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2751131-5
    ISSN 2213-5960
    ISSN 2213-5960
    DOI 10.1016/j.gdata.2015.10.010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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