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  • 1
    Publication Date: 2015-12-24
    Description: Pain management would be greatly enhanced by a formulation that would provide local anesthesia at the time desired by patients and with the desired intensity and duration. To this end, we have developed near-infrared (NIR) light-triggered liposomes to provide on-demand adjustable local anesthesia. The liposomes contained tetrodotoxin (TTX), which has...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 2
    Publication Date: 2015-02-20
    Description: Higher-order chromatin structure is emerging as an important regulator of gene expression. Although dynamic chromatin structures have been identified in the genome, the full scope of chromatin dynamics during mammalian development and lineage specification remains to be determined. By mapping genome-wide chromatin interactions in human embryonic stem (ES) cells and four human ES-cell-derived lineages, we uncover extensive chromatin reorganization during lineage specification. We observe that although self-associating chromatin domains are stable during differentiation, chromatin interactions both within and between domains change in a striking manner, altering 36% of active and inactive chromosomal compartments throughout the genome. By integrating chromatin interaction maps with haplotype-resolved epigenome and transcriptome data sets, we find widespread allelic bias in gene expression correlated with allele-biased chromatin states of linked promoters and distal enhancers. Our results therefore provide a global view of chromatin dynamics and a resource for studying long-range control of gene expression in distinct human cell lineages.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4515363/" 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/PMC4515363/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dixon, Jesse R -- Jung, Inkyung -- Selvaraj, Siddarth -- Shen, Yin -- Antosiewicz-Bourget, Jessica E -- Lee, Ah Young -- Ye, Zhen -- Kim, Audrey -- Rajagopal, Nisha -- Xie, Wei -- Diao, Yarui -- Liang, Jing -- Zhao, Huimin -- Lobanenkov, Victor V -- Ecker, Joseph R -- Thomson, James A -- Ren, Bing -- R01 ES024984/ES/NIEHS NIH HHS/ -- T32 GM007198/GM/NIGMS NIH HHS/ -- U01 ES017166/ES/NIEHS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Feb 19;518(7539):331-6. doi: 10.1038/nature14222.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Ludwig Institute for Cancer Research, 9500 Gilman Drive, La Jolla, California 92093-0653, USA [2] Medical Scientist Training Program, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA. ; Ludwig Institute for Cancer Research, 9500 Gilman Drive, La Jolla, California 92093-0653, USA. ; 1] Ludwig Institute for Cancer Research, 9500 Gilman Drive, La Jolla, California 92093-0653, USA [2] Bioinformatics and Systems Biology Graduate Program, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA. ; The Morgridge Institute for Research, 309 North Orchard Street, Madison, Wisconsin 53715, USA. ; Tsinghua University-Peking University Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China. ; Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA. ; Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, Twinbrook I NIAID Facility, Room 1417, 5640 Fishers Lane, Rockville, Maryland 20852, USA. ; Howard Hughes Medical Institute, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, USA. ; 1] The Morgridge Institute for Research, 309 North Orchard Street, Madison, Wisconsin 53715, USA [2] Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53706, USA [3] Department of Molecular, Cellular, and Developmental Biology, University of California Santa Barbara, Santa Barbara, California 93106, USA. ; 1] Ludwig Institute for Cancer Research, 9500 Gilman Drive, La Jolla, California 92093-0653, USA [2] University of California, San Diego School of Medicine, Department of Cellular and Molecular Medicine, Institute of Genomic Medicine, 9500 Gilman Drive, La Jolla, California 92093-0653, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25693564" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Allelic Imbalance/genetics ; *Cell Differentiation/genetics ; Cell Lineage/genetics ; Chromatin/*chemistry/genetics/*metabolism ; *Chromatin Assembly and Disassembly/genetics ; Embryonic Stem Cells/*cytology/*metabolism ; Enhancer Elements, Genetic/genetics ; Epigenesis, Genetic/*genetics ; Epigenomics ; Gene Regulatory Networks ; Humans ; Promoter Regions, Genetic/genetics ; Reproducibility of Results
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2015-02-20
    Description: Allelic differences between the two homologous chromosomes can affect the propensity of inheritance in humans; however, the extent of such differences in the human genome has yet to be fully explored. Here we delineate allelic chromatin modifications and transcriptomes among a broad set of human tissues, enabled by a chromosome-spanning haplotype reconstruction strategy. The resulting large collection of haplotype-resolved epigenomic maps reveals extensive allelic biases in both chromatin state and transcription, which show considerable variation across tissues and between individuals, and allow us to investigate cis-regulatory relationships between genes and their control sequences. Analyses of histone modification maps also uncover intriguing characteristics of cis-regulatory elements and tissue-restricted activities of repetitive elements. The rich data sets described here will enhance our understanding of the mechanisms by which cis-regulatory elements control gene expression programs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4449149/" 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/PMC4449149/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leung, Danny -- Jung, Inkyung -- Rajagopal, Nisha -- Schmitt, Anthony -- Selvaraj, Siddarth -- Lee, Ah Young -- Yen, Chia-An -- Lin, Shin -- Lin, Yiing -- Qiu, Yunjiang -- Xie, Wei -- Yue, Feng -- Hariharan, Manoj -- Ray, Pradipta -- Kuan, Samantha -- Edsall, Lee -- Yang, Hongbo -- Chi, Neil C -- Zhang, Michael Q -- Ecker, Joseph R -- Ren, Bing -- ES017166/ES/NIEHS NIH HHS/ -- F32 HL110473/HL/NHLBI NIH HHS/ -- F32HL110473/HL/NHLBI NIH HHS/ -- K99 HL119617/HL/NHLBI NIH HHS/ -- K99HL119617/HL/NHLBI NIH HHS/ -- R01 ES024984/ES/NIEHS NIH HHS/ -- T32 GM008666/GM/NIGMS NIH HHS/ -- U01 ES017166/ES/NIEHS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Feb 19;518(7539):350-4. doi: 10.1038/nature14217.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ludwig Institute for Cancer Research, La Jolla, California 92093, USA. ; 1] Department of Genetics, Stanford University, 300 Pasteur Drive, M-344 Stanford, California 94305, USA [2] Department of Cardiovascular Medicine, Stanford University, Falk Building, 870 Quarry Road Stanford, California 94304, USA. ; 1] Department of Genetics, Stanford University, 300 Pasteur Drive, M-344 Stanford, California 94305, USA [2] Department of Surgery, Washington University School of Medicine, 660 S. Euclid Ave, Campus Box 8109, St Louis, Missouri 63110, USA. ; Tsinghua University-Peking University Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China. ; Department of Biochemistry and Molecular Biology, College of Medicine, The Pennsylvania State University, Hershey, Pennsylvania 17033, USA. ; Genomic Analysis Laboratory, Howard Hughes Medical Institute, The Salk Institute for Biological Studies, La Jolla, California 92093, USA. ; Biological Sciences, Center for Systems Biology, The University of Texas at Dallas, Richardson, Texas 75080, USA. ; Department of Medicine, Division of Cardiology, University of California, San Diego, California 92093-0613, USA. ; 1] Department of Medicine, Division of Cardiology, University of California, San Diego, California 92093-0613, USA [2] Institute of Genomic Medicine, University of California, San Diego, California 92093, USA. ; 1] Biological Sciences, Center for Systems Biology, The University of Texas at Dallas, Richardson, Texas 75080, USA [2] Bioinformatics Division, Center for Synthetic and Systems Biology, TNLIST Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China. ; 1] Ludwig Institute for Cancer Research, La Jolla, California 92093, USA [2] Institute of Genomic Medicine, University of California, San Diego, California 92093, USA [3] Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California 92093, USA [4] UCSD Moores Cancer Center, University of California San Diego, La Jolla, California 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25693566" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; *Alleles ; Chromatin/genetics/metabolism ; Chromosomes, Human/genetics ; Datasets as Topic ; Enhancer Elements, Genetic/genetics ; Epigenesis, Genetic/*genetics ; *Epigenomics ; Genetic Variation/genetics ; Haplotypes/*genetics ; Histones/metabolism ; Humans ; Nucleotide Motifs ; Organ Specificity/genetics ; Transcription, Genetic/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2013-10-22
    Description: A large number of cis-regulatory sequences have been annotated in the human genome, but defining their target genes remains a challenge. One strategy is to identify the long-range looping interactions at these elements with the use of chromosome conformation capture (3C)-based techniques. However, previous studies lack either the resolution or coverage to permit a whole-genome, unbiased view of chromatin interactions. Here we report a comprehensive chromatin interaction map generated in human fibroblasts using a genome-wide 3C analysis method (Hi-C). We determined over one million long-range chromatin interactions at 5-10-kb resolution, and uncovered general principles of chromatin organization at different types of genomic features. We also characterized the dynamics of promoter-enhancer contacts after TNF-alpha signalling in these cells. Unexpectedly, we found that TNF-alpha-responsive enhancers are already in contact with their target promoters before signalling. Such pre-existing chromatin looping, which also exists in other cell types with different extracellular signalling, is a strong predictor of gene induction. Our observations suggest that the three-dimensional chromatin landscape, once established in a particular cell type, is relatively stable and could influence the selection or activation of target genes by a ubiquitous transcription activator in a cell-specific manner.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3838900/" 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/PMC3838900/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jin, Fulai -- Li, Yan -- Dixon, Jesse R -- Selvaraj, Siddarth -- Ye, Zhen -- Lee, Ah Young -- Yen, Chia-An -- Schmitt, Anthony D -- Espinoza, Celso A -- Ren, Bing -- P50 GM085764/GM/NIGMS NIH HHS/ -- P50 GM085764-03/GM/NIGMS NIH HHS/ -- T32 GM008666/GM/NIGMS NIH HHS/ -- U01 ES017166/ES/NIEHS NIH HHS/ -- England -- Nature. 2013 Nov 14;503(7475):290-4. doi: 10.1038/nature12644. Epub 2013 Oct 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Ludwig Institute for Cancer Research, 9500 Gilman Drive, La Jolla, California 92093, USA [2].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24141950" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Chromatin/chemistry/genetics/*metabolism ; *Chromosome Mapping ; Enhancer Elements, Genetic/physiology ; Gene Expression Regulation ; *Genome, Human ; Humans ; Imaging, Three-Dimensional ; Promoter Regions, Genetic/physiology ; Protein Binding ; Signal Transduction ; Tumor Necrosis Factor-alpha/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2014-04-12
    Description: Genome-wide characterization of the in vivo cellular response to perturbation is fundamental to understanding how cells survive stress. Identifying the proteins and pathways perturbed by small molecules affects biology and medicine by revealing the mechanisms of drug action. We used a yeast chemogenomics platform that quantifies the requirement for each gene for resistance to a compound in vivo to profile 3250 small molecules in a systematic and unbiased manner. We identified 317 compounds that specifically perturb the function of 121 genes and characterized the mechanism of specific compounds. Global analysis revealed that the cellular response to small molecules is limited and described by a network of 45 major chemogenomic signatures. Our results provide a resource for the discovery of functional interactions among genes, chemicals, and biological processes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4254748/" 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/PMC4254748/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Anna Y -- St Onge, Robert P -- Proctor, Michael J -- Wallace, Iain M -- Nile, Aaron H -- Spagnuolo, Paul A -- Jitkova, Yulia -- Gronda, Marcela -- Wu, Yan -- Kim, Moshe K -- Cheung-Ong, Kahlin -- Torres, Nikko P -- Spear, Eric D -- Han, Mitchell K L -- Schlecht, Ulrich -- Suresh, Sundari -- Duby, Geoffrey -- Heisler, Lawrence E -- Surendra, Anuradha -- Fung, Eula -- Urbanus, Malene L -- Gebbia, Marinella -- Lissina, Elena -- Miranda, Molly -- Chiang, Jennifer H -- Aparicio, Ana Maria -- Zeghouf, Mahel -- Davis, Ronald W -- Cherfils, Jacqueline -- Boutry, Marc -- Kaiser, Chris A -- Cummins, Carolyn L -- Trimble, William S -- Brown, Grant W -- Schimmer, Aaron D -- Bankaitis, Vytas A -- Nislow, Corey -- Bader, Gary D -- Giaever, Guri -- GM103504/GM/NIGMS NIH HHS/ -- GM44530/GM/NIGMS NIH HHS/ -- MOP-700724/Canadian Institutes of Health Research/Canada -- MOP-79368/Canadian Institutes of Health Research/Canada -- MOP-81340/Canadian Institutes of Health Research/Canada -- P01 HG000205/HG/NHGRI NIH HHS/ -- P41 GM103504/GM/NIGMS NIH HHS/ -- R01 003317-07/PHS HHS/ -- R01 CA157456/CA/NCI NIH HHS/ -- R01 GM044530/GM/NIGMS NIH HHS/ -- R01 HG003317/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2014 Apr 11;344(6180):208-11. doi: 10.1126/science.1250217.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Donnelly Centre, University of Toronto, Toronto, Ontario M5S 3E1, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24723613" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line, Tumor ; Cells/*drug effects ; Drug Evaluation, Preclinical/*methods ; Drug Resistance/*genetics ; *Gene Regulatory Networks ; Genome-Wide Association Study/*methods ; Haploinsufficiency ; Humans ; Pharmacogenetics ; Saccharomyces cerevisiae/drug effects/genetics ; Small Molecule Libraries/*pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Chemistry & Biology 1 (1994), S. 113-117 
    ISSN: 1074-5521
    Keywords: Microchaete loktakensis ; crystal structure ; cyclic peptide ; proteinase inhibitor ; serine proteinase
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0014-4827
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of optimization theory and applications 52 (1987), S. 151-162 
    ISSN: 1573-2878
    Keywords: Sequential gradient-restoration algorithm ; nonlinear optimization problems ; bounded terminal conditions ; Valentine's device
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Bounded terminal conditions of nonlinear optimization problems are converted to equality terminal conditions via the Valentine's device. In so doing, additional unknown parameters are introduced into the problem. The transformed problems can still be easily solved using the sequential gradient-restoration algorithm (SGRA) via a simple augmentation of the unknown parameter vector π. Three example problems with bounded terminal conditions are solved to verify this technique.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of optimization theory and applications 57 (1988), S. 519-536 
    ISSN: 1573-2878
    Keywords: Sequential gradient-restoration algorithm ; backward sweep method ; path equality constraints ; second variation ; neighboring optimal feedback laws
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Neighboring extremals of dynamic optimization problems with path equality constraints and with an unknown parameter vector are considered in this paper. With some simplifications, the problem is reduced to solving a linear, time-varying two-point boundary-value problem with integral path equality constraints. A modified backward sweep method is used to solve this problem. Two example problems are solved to illustrate the validity and usefulness of the solution technique.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of optimization theory and applications 56 (1988), S. 157-166 
    ISSN: 1573-2878
    Keywords: Padé approximation ; hereditary optimal control problems ; nonlinear time-lag systems ; computational schemes ; two-sided Laplace transform ; gradient algorithms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper, we consider a particular approximation scheme which can be used to solve hereditary optimal control problems. These problems are characterized by variables with a time-delayed argumentx(t − τ). In our approximation scheme, we first replace the variable with an augmented statey(t) ≜x(t - τ). The two-sided Laplace transform ofy(t) is a product of the Laplace transform ofx(t) and an exponential factor. This factor is approximated by a first-order Padé approximation, and a differential relation fory(t) can be found. The transformed problem, without any time-delayed argument, can then be solved using a gradient algorithm in the usual way. Four problems are solved to illustrate the validity and usefulness of this technique.
    Type of Medium: Electronic Resource
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