ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Publication Date: 2013-12-07
    Description: The skin is a classical example of a tissue maintained by stem cells. However, the identity of the stem cells that maintain the interfollicular epidermis and the source of the signals that control their activity remain unclear. Using mouse lineage tracing and quantitative clonal analyses, we showed that the Wnt target gene Axin2 marks interfollicular epidermal stem cells. These Axin2-expressing cells constitute the majority of the basal epidermal layer, compete neutrally, and require Wnt/beta-catenin signaling to proliferate. The same cells contribute robustly to wound healing, with no requirement for a quiescent stem cell subpopulation. By means of double-labeling RNA in situ hybridization in mice, we showed that the Axin2-expressing cells themselves produce Wnt signals as well as long-range secreted Wnt inhibitors, suggesting an autocrine mechanism of stem cell self-renewal.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4081860/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4081860/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lim, Xinhong -- Tan, Si Hui -- Koh, Winston Lian Chye -- Chau, Rosanna Man Wah -- Yan, Kelley S -- Kuo, Calvin J -- van Amerongen, Renee -- Klein, Allon Moshe -- Nusse, Roel -- 1R01DK085720/DK/NIDDK NIH HHS/ -- 1U01DK085527/DK/NIDDK NIH HHS/ -- 5K08DK096048/DK/NIDDK NIH HHS/ -- K08 DK096048/DK/NIDDK NIH HHS/ -- P30 DK026743/DK/NIDDK NIH HHS/ -- R01 DK085720/DK/NIDDK NIH HHS/ -- U01 DK085527/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Dec 6;342(6163):1226-30. doi: 10.1126/science.1239730.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Howard Hughes Medical Institute (HHMI), Institute for Stem Cell Biology and Regenerative Medicine, School of Medicine, Stanford University, Stanford, CA, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24311688" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Autocrine Communication ; Axin Protein/genetics/metabolism ; Cell Differentiation ; Cell Lineage ; Cell Proliferation ; Cells, Cultured ; Epidermis/*cytology/injuries/metabolism ; Epithelial Cells/cytology/metabolism ; Gene Expression ; Homeostasis ; Humans ; Intercellular Signaling Peptides and Proteins/metabolism ; Keratinocytes/cytology/metabolism ; Mice ; Regeneration ; Skin/injuries ; Stem Cell Niche ; Stem Cells/cytology/*physiology ; Wnt Proteins/metabolism ; *Wnt Signaling Pathway ; Wound Healing ; beta Catenin/genetics/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2013-06-12
    Description: Stem cells and progenitors in many lineages undergo self-renewing divisions, but the extracellular and intracellular proteins that regulate this process are largely unknown. Glucocorticoids stimulate red blood cell formation by promoting self-renewal of early burst-forming unit-erythroid (BFU-E) progenitors. Here we show that the RNA-binding protein ZFP36L2 is a transcriptional target of the glucocorticoid receptor (GR) in BFU-Es and is required for BFU-E self-renewal. ZFP36L2 is normally downregulated during erythroid differentiation from the BFU-E stage, but its expression is maintained by all tested GR agonists that stimulate BFU-E self-renewal, and the GR binds to several potential enhancer regions of ZFP36L2. Knockdown of ZFP36L2 in cultured BFU-E cells did not affect the rate of cell division but disrupted glucocorticoid-induced BFU-E self-renewal, and knockdown of ZFP36L2 in transplanted erythroid progenitors prevented expansion of erythroid lineage progenitors normally seen following induction of anaemia by phenylhydrazine treatment. ZFP36L2 preferentially binds to messenger RNAs that are induced or maintained at high expression levels during terminal erythroid differentiation and negatively regulates their expression levels. ZFP36L2 therefore functions as part of a molecular switch promoting BFU-E self-renewal and a subsequent increase in the total numbers of colony-forming unit-erythroid (CFU-E) progenitors and erythroid cells that are generated.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3702661/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3702661/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Lingbo -- Prak, Lina -- Rayon-Estrada, Violeta -- Thiru, Prathapan -- Flygare, Johan -- Lim, Bing -- Lodish, Harvey F -- P01 HL032262/HL/NHLBI NIH HHS/ -- P01HL32262/HL/NHLBI NIH HHS/ -- P30 CA014051/CA/NCI NIH HHS/ -- England -- Nature. 2013 Jul 4;499(7456):92-6. doi: 10.1038/nature12215. Epub 2013 Jun 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research and Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23748442" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Count ; *Cell Division/drug effects ; Cell Lineage ; Down-Regulation ; Erythroid Precursor Cells/*cytology/*metabolism ; Erythropoiesis/genetics ; Gene Knockdown Techniques ; Glucocorticoids/pharmacology ; Mice ; RNA, Messenger/genetics/metabolism ; RNA-Binding Proteins/metabolism ; Receptors, Glucocorticoid/agonists/metabolism ; Stress, Physiological ; Tristetraprolin/deficiency/genetics/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Publication Date: 2013-11-12
    Description: In multicellular organisms, transcription regulation is one of the central mechanisms modelling lineage differentiation and cell-fate determination. Transcription requires dynamic chromatin configurations between promoters and their corresponding distal regulatory elements. It is believed that their communication occurs within large discrete foci of aggregated RNA polymerases termed transcription factories in three-dimensional nuclear space. However, the dynamic nature of chromatin connectivity has not been characterized at the genome-wide level. Here, through a chromatin interaction analysis with paired-end tagging approach using an antibody that primarily recognizes the pre-initiation complexes of RNA polymerase II, we explore the transcriptional interactomes of three mouse cells of progressive lineage commitment, including pluripotent embryonic stem cells, neural stem cells and neurosphere stem/progenitor cells. Our global chromatin connectivity maps reveal approximately 40,000 long-range interactions, suggest precise enhancer-promoter associations and delineate cell-type-specific chromatin structures. Analysis of the complex regulatory repertoire shows that there are extensive colocalizations among promoters and distal-acting enhancers. Most of the enhancers associate with promoters located beyond their nearest active genes, indicating that the linear juxtaposition is not the only guiding principle driving enhancer target selection. Although promoter-enhancer interactions exhibit high cell-type specificity, promoters involved in interactions are found to be generally common and mostly active among different cells. Chromatin connectivity networks reveal that the pivotal genes of reprogramming functions are transcribed within physical proximity to each other in embryonic stem cells, linking chromatin architecture to coordinated gene expression. Our study sets the stage for the full-scale dissection of spatial and temporal genome structures and their roles in orchestrating development.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3954713/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3954713/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Yubo -- Wong, Chee-Hong -- Birnbaum, Ramon Y -- Li, Guoliang -- Favaro, Rebecca -- Ngan, Chew Yee -- Lim, Joanne -- Tai, Eunice -- Poh, Huay Mei -- Wong, Eleanor -- Mulawadi, Fabianus Hendriyan -- Sung, Wing-Kin -- Nicolis, Silvia -- Ahituv, Nadav -- Ruan, Yijun -- Wei, Chia-Lin -- 1U54HG004557-01/HG/NHGRI NIH HHS/ -- GGP12152/Telethon/Italy -- GM61390/GM/NIGMS NIH HHS/ -- R01 DK090382/DK/NIDDK NIH HHS/ -- R01 HD059862/HD/NICHD NIH HHS/ -- R01 HG004456-01/HG/NHGRI NIH HHS/ -- R01 NS079231/NS/NINDS NIH HHS/ -- R01DK090382/DK/NIDDK NIH HHS/ -- R01HD059862/HD/NICHD NIH HHS/ -- R01HG003521-01/HG/NHGRI NIH HHS/ -- R01HG005058/HG/NHGRI NIH HHS/ -- R01HG006768/HG/NHGRI NIH HHS/ -- R01NS079231/NS/NINDS NIH HHS/ -- U01 GM061390/GM/NIGMS NIH HHS/ -- U19 GM061390/GM/NIGMS NIH HHS/ -- England -- Nature. 2013 Dec 12;504(7479):306-10. doi: 10.1038/nature12716. Epub 2013 Nov 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Sequencing Technology Group, Joint Genome Institute, Lawrence Berkeley National Laboratory, Walnut Creek, California 94598, USA [2] [3] Department of Life Sciences, Faculty of Natural Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel (R.Y.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Systems Biology Center, 9000 Rockville Pike, Bethesda, Maryland 20892, USA (Y.Z.). ; 1] Sequencing Technology Group, Joint Genome Institute, Lawrence Berkeley National Laboratory, Walnut Creek, California 94598, USA [2]. ; 1] Department of Bioengineering and Therapeutic Sciences, Institute for Human Genetics, UCSF, San Francisco, California 94158, USA [2] [3] Department of Life Sciences, Faculty of Natural Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel (R.Y.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Systems Biology Center, 9000 Rockville Pike, Bethesda, Maryland 20892, USA (Y.Z.). ; 1] The Jackson Laboratory for Genomic Medicine, and Department of Genetic and Development Biology, University of Connecticut, 400 Farmington, Connecticut 06030, USA [2] Genome Institute of Singapore, 60 Biopolis Street, 138672 Singapore. ; Department of Biological Sciences and Biotechnology, University of Milano-Bicocca, 20126 Milano, Italy. ; Sequencing Technology Group, Joint Genome Institute, Lawrence Berkeley National Laboratory, Walnut Creek, California 94598, USA. ; Genome Institute of Singapore, 60 Biopolis Street, 138672 Singapore. ; Department of Bioengineering and Therapeutic Sciences, Institute for Human Genetics, UCSF, San Francisco, California 94158, USA. ; The Jackson Laboratory for Genomic Medicine, and Department of Genetic and Development Biology, University of Connecticut, 400 Farmington, Connecticut 06030, USA. ; 1] Sequencing Technology Group, Joint Genome Institute, Lawrence Berkeley National Laboratory, Walnut Creek, California 94598, USA [2] Genome Institute of Singapore, 60 Biopolis Street, 138672 Singapore.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24213634" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cell Lineage ; Chromatin/*genetics/*metabolism ; Embryonic Stem Cells/metabolism ; Enhancer Elements, Genetic/*genetics ; Gene Expression Regulation/*genetics ; In Situ Hybridization, Fluorescence ; Mice ; Neural Stem Cells/metabolism ; Promoter Regions, Genetic/*genetics ; RNA Polymerase II/metabolism ; Transcription, Genetic/genetics ; Zebrafish/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...