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  1. Article ; Online: A window in time for β-cell regeneration.

    Weidemann, Benjamin J / Bass, Joseph

    Genes & development

    2020  Volume 34, Issue 23-24, Page(s) 1559–1561

    Abstract: In vivo regeneration of β cells provides hope for self-renewal of functional insulin-secreting cells following β-cell failure, a historically fatal condition now sustainable only by administration of exogenous insulin. Despite advances in the treatment ... ...

    Abstract In vivo regeneration of β cells provides hope for self-renewal of functional insulin-secreting cells following β-cell failure, a historically fatal condition now sustainable only by administration of exogenous insulin. Despite advances in the treatment of diabetes mellitus, the path toward endogenous renewal of β-cell populations has remained elusive. Intensive efforts have focused on elucidating pancreatic transcriptional programs that can drive the division and (
    MeSH term(s) Circadian Clocks ; Diabetes Mellitus ; Humans ; Insulin ; Insulin-Secreting Cells ; Pancreas
    Chemical Substances Insulin
    Language English
    Publishing date 2020-12-01
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review ; Comment
    ZDB-ID 806684-x
    ISSN 1549-5477 ; 0890-9369
    ISSN (online) 1549-5477
    ISSN 0890-9369
    DOI 10.1101/gad.345769.120
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Repression of latent NF-κB enhancers by PDX1 regulates β cell functional heterogeneity.

    Weidemann, Benjamin J / Marcheva, Biliana / Kobayashi, Mikoto / Omura, Chiaki / Newman, Marsha V / Kobayashi, Yumiko / Waldeck, Nathan J / Perelis, Mark / Lantier, Louise / McGuinness, Owen P / Ramsey, Kathryn Moynihan / Stein, Roland W / Bass, Joseph

    Cell metabolism

    2024  Volume 36, Issue 1, Page(s) 90–102.e7

    Abstract: Interactions between lineage-determining and activity-dependent transcription factors determine single-cell identity and function within multicellular tissues through incompletely known mechanisms. By assembling a single-cell atlas of chromatin state ... ...

    Abstract Interactions between lineage-determining and activity-dependent transcription factors determine single-cell identity and function within multicellular tissues through incompletely known mechanisms. By assembling a single-cell atlas of chromatin state within human islets, we identified β cell subtypes governed by either high or low activity of the lineage-determining factor pancreatic duodenal homeobox-1 (PDX1). β cells with reduced PDX1 activity displayed increased chromatin accessibility at latent nuclear factor κB (NF-κB) enhancers. Pdx1 hypomorphic mice exhibited de-repression of NF-κB and impaired glucose tolerance at night. Three-dimensional analyses in tandem with chromatin immunoprecipitation (ChIP) sequencing revealed that PDX1 silences NF-κB at circadian and inflammatory enhancers through long-range chromatin contacts involving SIN3A. Conversely, Bmal1 ablation in β cells disrupted genome-wide PDX1 and NF-κB DNA binding. Finally, antagonizing the interleukin (IL)-1β receptor, an NF-κB target, improved insulin secretion in Pdx1 hypomorphic islets. Our studies reveal functional subtypes of single β cells defined by a gradient in PDX1 activity and identify NF-κB as a target for insulinotropic therapy.
    MeSH term(s) Animals ; Humans ; Mice ; Chromatin/metabolism ; Genes, Homeobox ; Homeodomain Proteins/genetics ; Homeodomain Proteins/metabolism ; Insulin-Secreting Cells/metabolism ; NF-kappa B/metabolism
    Chemical Substances Chromatin ; Homeodomain Proteins ; NF-kappa B ; pancreatic and duodenal homeobox 1 protein
    Language English
    Publishing date 2024-01-03
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2176834-1
    ISSN 1932-7420 ; 1550-4131
    ISSN (online) 1932-7420
    ISSN 1550-4131
    DOI 10.1016/j.cmet.2023.11.018
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: A day in the life of chromatin: how enhancer-promoter loops shape daily behavior.

    Weidemann, Benjamin J / Ramsey, Kathryn Moynihan / Bass, Joseph

    Genes & development

    2018  Volume 32, Issue 5-6, Page(s) 321–323

    Abstract: Each spring, we get out of bed 1 h ahead of our biological wake-up time due to the misalignment of internal clocks with the light-dark cycle. Genetic discoveries revealed that clock genes encode transcription factors that are expressed throughout many ... ...

    Abstract Each spring, we get out of bed 1 h ahead of our biological wake-up time due to the misalignment of internal clocks with the light-dark cycle. Genetic discoveries revealed that clock genes encode transcription factors that are expressed throughout many tissues, yet a gap has remained in understanding the temporal dynamics of transcription. Two groups now apply circular chromosome conformation capture and high-throughput sequencing to dissect how "time of day"-dependent changes in chromatin drive core clock oscillations. A surprise is the finding that disruption of enhancer-promoter contacts within chromatin leads to an advance in the "wake-up" time of mice. Furthermore, the assembly of transcriptionally active domains of chromatin requires the ordered recruitment of core clock transcription factors each day. These studies show that waking up involves highly dynamic changes in the three-dimensional positioning of genes within the cell.
    MeSH term(s) Animals ; Chromatin/genetics ; Circadian Rhythm/genetics ; Enhancer Elements, Genetic/genetics ; Enhancer Elements, Genetic/physiology ; Humans ; Photoperiod ; Promoter Regions, Genetic/genetics ; Promoter Regions, Genetic/physiology
    Chemical Substances Chromatin
    Language English
    Publishing date 2018-03-15
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 806684-x
    ISSN 1549-5477 ; 0890-9369
    ISSN (online) 1549-5477
    ISSN 0890-9369
    DOI 10.1101/gad.314187.118
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Time-restricted feeding mitigates obesity through adipocyte thermogenesis.

    Hepler, Chelsea / Weidemann, Benjamin J / Waldeck, Nathan J / Marcheva, Biliana / Cedernaes, Jonathan / Thorne, Anneke K / Kobayashi, Yumiko / Nozawa, Rino / Newman, Marsha V / Gao, Peng / Shao, Mengle / Ramsey, Kathryn M / Gupta, Rana K / Bass, Joseph

    Science (New York, N.Y.)

    2022  Volume 378, Issue 6617, Page(s) 276–284

    Abstract: Misalignment of feeding rhythms with the light-dark cycle leads to disrupted peripheral circadian clocks and obesity. Conversely, restricting feeding to the active period mitigates metabolic syndrome through mechanisms that remain unknown. We found that ... ...

    Abstract Misalignment of feeding rhythms with the light-dark cycle leads to disrupted peripheral circadian clocks and obesity. Conversely, restricting feeding to the active period mitigates metabolic syndrome through mechanisms that remain unknown. We found that genetic enhancement of adipocyte thermogenesis through ablation of the zinc finger protein 423 (ZFP423) attenuated obesity caused by consumption of a high-fat diet during the inactive (light) period by increasing futile creatine cycling in mice. Circadian control of adipocyte creatine metabolism underlies the timing of diet-induced thermogenesis, and enhancement of adipocyte circadian rhythms through overexpression of the clock activator brain and muscle Arnt-like protein-1 (BMAL1) ameliorated metabolic complications during diet-induced obesity. These findings uncover rhythmic creatine-mediated thermogenesis as an essential mechanism that drives metabolic benefits during time-restricted feeding.
    MeSH term(s) Animals ; Mice ; Adipocytes/metabolism ; ARNTL Transcription Factors/genetics ; Creatine/metabolism ; Obesity/etiology ; Obesity/prevention & control ; Thermogenesis/genetics ; Time Factors ; Circadian Clocks ; Circadian Rhythm ; Diet, High-Fat/adverse effects ; DNA-Binding Proteins/genetics ; Transcription Factors/genetics ; Mice, Knockout
    Chemical Substances ARNTL Transcription Factors ; Creatine (MU72812GK0) ; Bmal1 protein, mouse ; Ebfaz protein, mouse ; DNA-Binding Proteins ; Transcription Factors
    Language English
    Publishing date 2022-10-20
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.abl8007
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: P2Y1 purinergic receptor identified as a diabetes target in a small-molecule screen to reverse circadian β-cell failure.

    Marcheva, Biliana / Weidemann, Benjamin J / Taguchi, Akihiko / Perelis, Mark / Ramsey, Kathryn Moynihan / Newman, Marsha V / Kobayashi, Yumiko / Omura, Chiaki / Manning Fox, Jocelyn E / Lin, Haopeng / Macdonald, Patrick E / Bass, Joseph

    eLife

    2022  Volume 11

    Abstract: The mammalian circadian clock drives daily oscillations in physiology and behavior through an autoregulatory transcription feedback loop present in central and peripheral cells. Ablation of the core clock within the endocrine pancreas of adult animals ... ...

    Abstract The mammalian circadian clock drives daily oscillations in physiology and behavior through an autoregulatory transcription feedback loop present in central and peripheral cells. Ablation of the core clock within the endocrine pancreas of adult animals impairs the transcription and splicing of genes involved in hormone exocytosis and causes hypoinsulinemic diabetes. Here, we developed a genetically sensitized small-molecule screen to identify druggable proteins and mechanistic pathways involved in circadian β-cell failure. Our approach was to generate β-cells expressing a nanoluciferase reporter within the proinsulin polypeptide to screen 2640 pharmacologically active compounds and identify insulinotropic molecules that bypass the secretory defect in CRISPR-Cas9-targeted clock mutant β-cells. We validated hit compounds in primary mouse islets and identified known modulators of ligand-gated ion channels and G-protein-coupled receptors, including the antihelmintic ivermectin. Single-cell electrophysiology in circadian mutant mouse and human cadaveric islets revealed ivermectin as a glucose-dependent secretagogue. Genetic, genomic, and pharmacological analyses established the P2Y1 receptor as a clock-controlled mediator of the insulinotropic activity of ivermectin. These findings identify the P2Y1 purinergic receptor as a diabetes target based upon a genetically sensitized phenotypic screen.
    MeSH term(s) ARNTL Transcription Factors ; Animals ; Cell Line ; Circadian Clocks ; Circadian Rhythm ; Cryptochromes/genetics ; Cryptochromes/metabolism ; Diabetes Mellitus/drug therapy ; Diabetes Mellitus/metabolism ; Gene Expression Regulation/drug effects ; Glucose/metabolism ; High-Throughput Screening Assays ; Homeostasis ; Humans ; Hypoglycemic Agents/pharmacology ; Insulin/metabolism ; Insulin-Secreting Cells ; Islets of Langerhans/drug effects ; Islets of Langerhans/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Receptors, Purinergic P2Y1/metabolism
    Chemical Substances ARNTL Transcription Factors ; BMAL1 protein, human ; Bmal1 protein, mouse ; Cry1 protein, mouse ; Cry2 protein, mouse ; Cryptochromes ; Hypoglycemic Agents ; Insulin ; Receptors, Purinergic P2Y1 ; Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2022-02-21
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; 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.75132
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: P2Y1 purinergic receptor identified as a diabetes target in a small-molecule screen to reverse circadian β-cell failure

    Biliana Marcheva / Benjamin J Weidemann / Akihiko Taguchi / Mark Perelis / Kathryn Moynihan Ramsey / Marsha V Newman / Yumiko Kobayashi / Chiaki Omura / Jocelyn E Manning Fox / Haopeng Lin / Patrick E Macdonald / Joseph Bass

    eLife, Vol

    2022  Volume 11

    Abstract: The mammalian circadian clock drives daily oscillations in physiology and behavior through an autoregulatory transcription feedback loop present in central and peripheral cells. Ablation of the core clock within the endocrine pancreas of adult animals ... ...

    Abstract The mammalian circadian clock drives daily oscillations in physiology and behavior through an autoregulatory transcription feedback loop present in central and peripheral cells. Ablation of the core clock within the endocrine pancreas of adult animals impairs the transcription and splicing of genes involved in hormone exocytosis and causes hypoinsulinemic diabetes. Here, we developed a genetically sensitized small-molecule screen to identify druggable proteins and mechanistic pathways involved in circadian β-cell failure. Our approach was to generate β-cells expressing a nanoluciferase reporter within the proinsulin polypeptide to screen 2640 pharmacologically active compounds and identify insulinotropic molecules that bypass the secretory defect in CRISPR-Cas9-targeted clock mutant β-cells. We validated hit compounds in primary mouse islets and identified known modulators of ligand-gated ion channels and G-protein-coupled receptors, including the antihelmintic ivermectin. Single-cell electrophysiology in circadian mutant mouse and human cadaveric islets revealed ivermectin as a glucose-dependent secretagogue. Genetic, genomic, and pharmacological analyses established the P2Y1 receptor as a clock-controlled mediator of the insulinotropic activity of ivermectin. These findings identify the P2Y1 purinergic receptor as a diabetes target based upon a genetically sensitized phenotypic screen.
    Keywords circadian clock ; high-throughput screen ; diabetes ; ivermectin ; purinergic receptor ; insulin ; Medicine ; R ; Science ; Q ; Biology (General) ; QH301-705.5
    Subject code 571
    Language English
    Publishing date 2022-02-01T00:00:00Z
    Publisher eLife Sciences Publications Ltd
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Erratum: A role for alternative splicing in circadian control of exocytosis and glucose homeostasis.

    Marcheva, Biliana / Perelis, Mark / Weidemann, Benjamin J / Taguchi, Akihiko / Lin, Haopeng / Omura, Chiaki / Kobayashi, Yumiko / Newman, Marsha V / Wyatt, Eugene J / McNally, Elizabeth M / Manning Fox, Jocelyn E / Hong, Heekyung / Shankar, Archana / Wheeler, Emily C / Ramsey, Kathryn Moynihan / MacDonald, Patrick E / Yeo, Gene W / Bass, Joseph

    Genes & development

    2021  Volume 35, Issue 5-6, Page(s) 425

    Language English
    Publishing date 2021-03-01
    Publishing country United States
    Document type Journal Article ; Published Erratum
    ZDB-ID 806684-x
    ISSN 1549-5477 ; 0890-9369
    ISSN (online) 1549-5477
    ISSN 0890-9369
    DOI 10.1101/gad.348303.121
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: NAD

    Levine, Daniel C / Hong, Heekyung / Weidemann, Benjamin J / Ramsey, Kathryn M / Affinati, Alison H / Schmidt, Mark S / Cedernaes, Jonathan / Omura, Chiaki / Braun, Rosemary / Lee, Choogon / Brenner, Charles / Peek, Clara Bien / Bass, Joseph

    Molecular cell

    2020  Volume 78, Issue 5, Page(s) 835–849.e7

    Abstract: Disrupted sleep-wake and molecular circadian rhythms are a feature of aging associated with metabolic disease and reduced levels of ... ...

    Abstract Disrupted sleep-wake and molecular circadian rhythms are a feature of aging associated with metabolic disease and reduced levels of NAD
    MeSH term(s) ARNTL Transcription Factors/genetics ; Age Factors ; Aging/genetics ; Animals ; CLOCK Proteins/genetics ; Circadian Clocks/physiology ; Circadian Rhythm/genetics ; Circadian Rhythm/physiology ; Cytokines/metabolism ; Female ; HEK293 Cells ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; NAD/metabolism ; Period Circadian Proteins/genetics ; Period Circadian Proteins/metabolism ; Sirtuin 1/metabolism ; Sirtuins/metabolism
    Chemical Substances ARNTL Transcription Factors ; Cytokines ; PER2 protein, human ; Per2 protein, mouse ; Period Circadian Proteins ; NAD (0U46U6E8UK) ; CLOCK Proteins (EC 2.3.1.48) ; Sirtuin 1 (EC 3.5.1.-) ; Sirtuins (EC 3.5.1.-)
    Language English
    Publishing date 2020-05-04
    Publishing country United States
    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 1415236-8
    ISSN 1097-4164 ; 1097-2765
    ISSN (online) 1097-4164
    ISSN 1097-2765
    DOI 10.1016/j.molcel.2020.04.010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: A role for alternative splicing in circadian control of exocytosis and glucose homeostasis.

    Marcheva, Biliana / Perelis, Mark / Weidemann, Benjamin J / Taguchi, Akihiko / Lin, Haopeng / Omura, Chiaki / Kobayashi, Yumiko / Newman, Marsha V / Wyatt, Eugene J / McNally, Elizabeth M / Fox, Jocelyn E Manning / Hong, Heekyung / Shankar, Archana / Wheeler, Emily C / Ramsey, Kathryn Moynihan / MacDonald, Patrick E / Yeo, Gene W / Bass, Joseph

    Genes & development

    2020  Volume 34, Issue 15-16, Page(s) 1089–1105

    Abstract: The circadian clock is encoded by a negative transcriptional feedback loop that coordinates physiology and behavior through molecular programs that remain incompletely understood. Here, we reveal rhythmic genome-wide alternative splicing (AS) of pre- ... ...

    Abstract The circadian clock is encoded by a negative transcriptional feedback loop that coordinates physiology and behavior through molecular programs that remain incompletely understood. Here, we reveal rhythmic genome-wide alternative splicing (AS) of pre-mRNAs encoding regulators of peptidergic secretion within pancreatic β cells that are perturbed in
    MeSH term(s) ARNTL Transcription Factors/genetics ; ARNTL Transcription Factors/physiology ; Alternative Splicing ; Animals ; CLOCK Proteins/genetics ; CLOCK Proteins/physiology ; Cells, Cultured ; Circadian Clocks/genetics ; Death Domain Receptor Signaling Adaptor Proteins/genetics ; Death Domain Receptor Signaling Adaptor Proteins/metabolism ; Exocytosis ; Glucose/metabolism ; Guanine Nucleotide Exchange Factors/genetics ; Guanine Nucleotide Exchange Factors/metabolism ; Guanylate Kinases/genetics ; Guanylate Kinases/metabolism ; Homeostasis ; Insulin Secretion/genetics ; Insulin-Secreting Cells/metabolism ; Islets of Langerhans/metabolism ; Male ; Mice, Inbred C57BL ; Nuclear Proteins/physiology ; Obesity/genetics ; Obesity/metabolism ; Synaptosomal-Associated Protein 25/genetics ; Synaptosomal-Associated Protein 25/metabolism ; Transcription Factors/physiology
    Chemical Substances ARNTL Transcription Factors ; Bmal1 protein, mouse ; Death Domain Receptor Signaling Adaptor Proteins ; Guanine Nucleotide Exchange Factors ; Madd protein, mouse ; Nuclear Proteins ; Snap25 protein, mouse ; Synaptosomal-Associated Protein 25 ; Thrap3 protein, mouse ; Transcription Factors ; CLOCK Proteins (EC 2.3.1.48) ; Clock protein, mouse (EC 2.3.1.48) ; CASK kinases (EC 2.7.11.1) ; Guanylate Kinases (EC 2.7.4.8) ; Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2020-07-02
    Publishing country United States
    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 806684-x
    ISSN 1549-5477 ; 0890-9369
    ISSN (online) 1549-5477
    ISSN 0890-9369
    DOI 10.1101/gad.338178.120
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Selective Deletion of Renin-b in the Brain Alters Drinking and Metabolism.

    Shinohara, Keisuke / Nakagawa, Pablo / Gomez, Javier / Morgan, Donald A / Littlejohn, Nicole K / Folchert, Matthew D / Weidemann, Benjamin J / Liu, Xuebo / Walsh, Susan A / Ponto, Laura L / Rahmouni, Kamal / Grobe, Justin L / Sigmund, Curt D

    Hypertension (Dallas, Tex. : 1979)

    2017  Volume 70, Issue 5, Page(s) 990–997

    Abstract: The brain-specific isoform of renin (Ren-b) has been proposed as a negative regulator of the brain renin-angiotensin system (RAS). We analyzed mice with a selective deletion of Ren-b which preserved expression of the classical renin (Ren-a) isoform. We ... ...

    Abstract The brain-specific isoform of renin (Ren-b) has been proposed as a negative regulator of the brain renin-angiotensin system (RAS). We analyzed mice with a selective deletion of Ren-b which preserved expression of the classical renin (Ren-a) isoform. We reported that Ren-b
    MeSH term(s) Animals ; Basal Metabolism/physiology ; Brain/metabolism ; Drinking/physiology ; Energy Metabolism/physiology ; Hypertension/metabolism ; Mice ; Protein Isoforms ; Renin/metabolism ; Renin-Angiotensin System/physiology ; Sympathetic Nervous System/metabolism
    Chemical Substances Protein Isoforms ; Renin (EC 3.4.23.15)
    Language English
    Publishing date 2017-09-05
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 423736-5
    ISSN 1524-4563 ; 0194-911X ; 0362-4323
    ISSN (online) 1524-4563
    ISSN 0194-911X ; 0362-4323
    DOI 10.1161/HYPERTENSIONAHA.117.09923
    Database MEDical Literature Analysis and Retrieval System OnLINE

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