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  • 1
    Publication Date: 2010-01-15
    Description: The human Y chromosome began to evolve from an autosome hundreds of millions of years ago, acquiring a sex-determining function and undergoing a series of inversions that suppressed crossing over with the X chromosome. Little is known about the recent evolution of the Y chromosome because only the human Y chromosome has been fully sequenced. Prevailing theories hold that Y chromosomes evolve by gene loss, the pace of which slows over time, eventually leading to a paucity of genes, and stasis. These theories have been buttressed by partial sequence data from newly emergent plant and animal Y chromosomes, but they have not been tested in older, highly evolved Y chromosomes such as that of humans. Here we finished sequencing of the male-specific region of the Y chromosome (MSY) in our closest living relative, the chimpanzee, achieving levels of accuracy and completion previously reached for the human MSY. By comparing the MSYs of the two species we show that they differ radically in sequence structure and gene content, indicating rapid evolution during the past 6 million years. The chimpanzee MSY contains twice as many massive palindromes as the human MSY, yet it has lost large fractions of the MSY protein-coding genes and gene families present in the last common ancestor. We suggest that the extraordinary divergence of the chimpanzee and human MSYs was driven by four synergistic factors: the prominent role of the MSY in sperm production, 'genetic hitchhiking' effects in the absence of meiotic crossing over, frequent ectopic recombination within the MSY, and species differences in mating behaviour. Although genetic decay may be the principal dynamic in the evolution of newly emergent Y chromosomes, wholesale renovation is the paramount theme in the continuing evolution of chimpanzee, human and perhaps other older MSYs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3653425/" 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/PMC3653425/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hughes, Jennifer F -- Skaletsky, Helen -- Pyntikova, Tatyana -- Graves, Tina A -- van Daalen, Saskia K M -- Minx, Patrick J -- Fulton, Robert S -- McGrath, Sean D -- Locke, Devin P -- Friedman, Cynthia -- Trask, Barbara J -- Mardis, Elaine R -- Warren, Wesley C -- Repping, Sjoerd -- Rozen, Steve -- Wilson, Richard K -- Page, David C -- R01 HG000257/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Jan 28;463(7280):536-9. doi: 10.1038/nature08700. Epub 2010 Jan 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Whitehead Institute, and Department of Biology, Massachusetts Institute of Technology, 9 Cambridge Center, Cambridge, Massachusetts 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20072128" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosomes, Human, Pair 21/genetics ; Chromosomes, Human, Y/*genetics ; DNA/chemistry/genetics ; Genes/*genetics ; Humans ; Male ; Molecular Sequence Data ; *Nucleic Acid Conformation ; Pan troglodytes/*genetics ; Sequence Homology, Nucleic Acid ; Y Chromosome/*genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2016-04-17
    Description: The world’s oceans are a global reservoir of persistent organic pollutants to which humans and other animals are exposed. Although it is well known that these pollutants are potentially hazardous to human and environmental health, their impacts remain incompletely understood. We examined how persistent organic pollutants interact with the drug efflux transporter P-glycoprotein (P-gp), an evolutionarily conserved defense protein that is essential for protection against environmental toxicants. We identified specific congeners of organochlorine pesticides, polychlorinated biphenyls, and polybrominated diphenyl ethers that inhibit mouse and human P-gp, and determined their environmental levels in yellowfin tuna from the Gulf of Mexico. In addition, we solved the cocrystal structure of P-gp bound to one of these inhibitory pollutants, PBDE (polybrominated diphenyl ether)–100, providing the first view of pollutant binding to a drug transporter. The results demonstrate the potential for specific binding and inhibition of mammalian P-gp by ubiquitous congeners of persistent organic pollutants present in fish and other foods, and argue for further consideration of transporter inhibition in the assessment of the risk of exposure to these chemicals.
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
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  • 3
    Publication Date: 2010-04-16
    Description: Massively parallel DNA sequencing technologies provide an unprecedented ability to screen entire genomes for genetic changes associated with tumour progression. Here we describe the genomic analyses of four DNA samples from an African-American patient with basal-like breast cancer: peripheral blood, the primary tumour, a brain metastasis and a xenograft derived from the primary tumour. The metastasis contained two de novo mutations and a large deletion not present in the primary tumour, and was significantly enriched for 20 shared mutations. The xenograft retained all primary tumour mutations and displayed a mutation enrichment pattern that resembled the metastasis. Two overlapping large deletions, encompassing CTNNA1, were present in all three tumour samples. The differential mutation frequencies and structural variation patterns in metastasis and xenograft compared with the primary tumour indicate that secondary tumours may arise from a minority of cells within the primary tumour.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2872544/" 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/PMC2872544/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ding, Li -- Ellis, Matthew J -- Li, Shunqiang -- Larson, David E -- Chen, Ken -- Wallis, John W -- Harris, Christopher C -- McLellan, Michael D -- Fulton, Robert S -- Fulton, Lucinda L -- Abbott, Rachel M -- Hoog, Jeremy -- Dooling, David J -- Koboldt, Daniel C -- Schmidt, Heather -- Kalicki, Joelle -- Zhang, Qunyuan -- Chen, Lei -- Lin, Ling -- Wendl, Michael C -- McMichael, Joshua F -- Magrini, Vincent J -- Cook, Lisa -- McGrath, Sean D -- Vickery, Tammi L -- Appelbaum, Elizabeth -- Deschryver, Katherine -- Davies, Sherri -- Guintoli, Therese -- Lin, Li -- Crowder, Robert -- Tao, Yu -- Snider, Jacqueline E -- Smith, Scott M -- Dukes, Adam F -- Sanderson, Gabriel E -- Pohl, Craig S -- Delehaunty, Kim D -- Fronick, Catrina C -- Pape, Kimberley A -- Reed, Jerry S -- Robinson, Jody S -- Hodges, Jennifer S -- Schierding, William -- Dees, Nathan D -- Shen, Dong -- Locke, Devin P -- Wiechert, Madeline E -- Eldred, James M -- Peck, Josh B -- Oberkfell, Benjamin J -- Lolofie, Justin T -- Du, Feiyu -- Hawkins, Amy E -- O'Laughlin, Michelle D -- Bernard, Kelly E -- Cunningham, Mark -- Elliott, Glendoria -- Mason, Mark D -- Thompson, Dominic M Jr -- Ivanovich, Jennifer L -- Goodfellow, Paul J -- Perou, Charles M -- Weinstock, George M -- Aft, Rebecca -- Watson, Mark -- Ley, Timothy J -- Wilson, Richard K -- Mardis, Elaine R -- 1 U01 CA114722-01/CA/NCI NIH HHS/ -- 3P50 CA68438/CA/NCI NIH HHS/ -- U01 CA114722/CA/NCI NIH HHS/ -- U10 CA076001/CA/NCI NIH HHS/ -- U54 HG003079/HG/NHGRI NIH HHS/ -- U54 HG003079-07/HG/NHGRI NIH HHS/ -- UL1 RR024992/RR/NCRR NIH HHS/ -- UL1 TR000448/TR/NCATS NIH HHS/ -- England -- Nature. 2010 Apr 15;464(7291):999-1005. doi: 10.1038/nature08989.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Genome Center at Washington University, St Louis, Missouri 63108, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20393555" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Brain Neoplasms/*genetics/*secondary ; Breast Neoplasms/*genetics/pathology ; DNA Copy Number Variations/genetics ; DNA Mutational Analysis ; Disease Progression ; Female ; Gene Frequency/genetics ; Genome, Human/*genetics ; Genomics ; Humans ; Mutation/*genetics ; *Neoplasm Transplantation ; Translocation, Genetic/genetics ; Transplantation, Heterologous ; alpha Catenin/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: 2012-01-13
    Description: Most patients with acute myeloid leukaemia (AML) die from progressive disease after relapse, which is associated with clonal evolution at the cytogenetic level. To determine the mutational spectrum associated with relapse, we sequenced the primary tumour and relapse genomes from eight AML patients, and validated hundreds of somatic mutations using deep sequencing; this allowed us to define clonality and clonal evolution patterns precisely at relapse. In addition to discovering novel, recurrently mutated genes (for example, WAC, SMC3, DIS3, DDX41 and DAXX) in AML, we also found two major clonal evolution patterns during AML relapse: (1) the founding clone in the primary tumour gained mutations and evolved into the relapse clone, or (2) a subclone of the founding clone survived initial therapy, gained additional mutations and expanded at relapse. In all cases, chemotherapy failed to eradicate the founding clone. The comparison of relapse-specific versus primary tumour mutations in all eight cases revealed an increase in transversions, probably due to DNA damage caused by cytotoxic chemotherapy. These data demonstrate that AML relapse is associated with the addition of new mutations and clonal evolution, which is shaped, in part, by the chemotherapy that the patients receive to establish and maintain remissions.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3267864/" 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/PMC3267864/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ding, Li -- Ley, Timothy J -- Larson, David E -- Miller, Christopher A -- Koboldt, Daniel C -- Welch, John S -- Ritchey, Julie K -- Young, Margaret A -- Lamprecht, Tamara -- McLellan, Michael D -- McMichael, Joshua F -- Wallis, John W -- Lu, Charles -- Shen, Dong -- Harris, Christopher C -- Dooling, David J -- Fulton, Robert S -- Fulton, Lucinda L -- Chen, Ken -- Schmidt, Heather -- Kalicki-Veizer, Joelle -- Magrini, Vincent J -- Cook, Lisa -- McGrath, Sean D -- Vickery, Tammi L -- Wendl, Michael C -- Heath, Sharon -- Watson, Mark A -- Link, Daniel C -- Tomasson, Michael H -- Shannon, William D -- Payton, Jacqueline E -- Kulkarni, Shashikant -- Westervelt, Peter -- Walter, Matthew J -- Graubert, Timothy A -- Mardis, Elaine R -- Wilson, Richard K -- DiPersio, John F -- P01 CA101937/CA/NCI NIH HHS/ -- U54 HG003079/HG/NHGRI NIH HHS/ -- U54 HG003079-10/HG/NHGRI NIH HHS/ -- England -- Nature. 2012 Jan 11;481(7382):506-10. doi: 10.1038/nature10738.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Genome Institute, Washington University, St Louis, Missouri 63108, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22237025" target="_blank"〉PubMed〈/a〉
    Keywords: Antineoplastic Agents/adverse effects/therapeutic use ; Clonal Evolution/*genetics ; Clone Cells/drug effects/metabolism/pathology ; DNA Damage/drug effects ; DNA Mutational Analysis ; Genes, Neoplasm/genetics ; Genome, Human/drug effects/*genetics ; High-Throughput Nucleotide Sequencing ; Humans ; Leukemia, Myeloid, Acute/drug therapy/*genetics/*pathology ; Mutagenesis/drug effects/genetics ; Recurrence ; 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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  • 5
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