Species-specific metastasis of human tumor cells in the severe combined immunodeficiency mouse engrafted with human tissue.

abstract：:Bovine pyruvate dehydrogenase phosphatase (PDP) is a Mg2+-dependent and Ca2+-stimulated heterodimer that is a member of the protein phosphatase 2C family and is localized to mitochondria. Insight into the function of the regulatory subunit of PDP (PDPr) has been gained. It decreases the sensitivity of the catalytic su...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Yan J,Lawson JE,Reed LJ

更新日期：1996-05-14 00:00:00

abstract：:In Caenorhabditis elegans, pre-mRNA for the essential splicing factor U2AF65 sometimes is spliced to produce an RNA that includes an extra 216-bp internal exon, exon 3. Inclusion of exon 3 inserts an in-frame stop codon, yet this RNA is not subject to SMG-mediated RNA surveillance. To test whether exon 3 causes RNA to...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： MacMorris MA,Zorio DA,Blumenthal T

更新日期：1999-03-30 00:00:00

abstract：:p90 ribosomal S6 kinase (RSK1) is an effector of both Ras/MEK/MAPK and PI3K/PDK1 pathways. We present evidence that RSK1 drives p27 phosphorylation at T198 to increase RhoA-p27 binding and cell motility. RSK1 activation and p27pT198 both increase in early G(1). As for many kinase-substrate pairs, cellular RSK1 copreci...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Larrea MD,Hong F,Wander SA,da Silva TG,Helfman D,Lannigan D,Smith JA,Slingerland JM

更新日期：2009-06-09 00:00:00

abstract：:Von Willebrand protein is present in the extracellular matrix of endothelial cells where it codistributes with fibronectin and types IV and V collagen. Bacterial collagenase digestion of endothelial cells removed fibrillar collagen, but the pattern of fibronectin and of von Willebrand protein remained undisturbed. Exo...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Wagner DD,Urban-Pickering M,Marder VJ

更新日期：1984-01-01 00:00:00

abstract：:The mRNA for organic anion transport protein (oatp) was previously shown to be present in abundance in liver and kidney, and in small amounts in brain. Data obtained from experiments with reverse transcriptase-PCR techniques and in situ hybridization analysis showed that the oatp mRNA is present within the brain, loca...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Angeletti RH,Novikoff PM,Juvvadi SR,Fritschy JM,Meier PJ,Wolkoff AW

更新日期：1997-01-07 00:00:00

abstract：:The crystal structure of the decanucleotide d(CGCAATTGCG)2 has been solved by a combination of molecular replacement and heavy-atom procedures and has been refined to an R factor of 20.2% at 2.7 A. It is not a fully base-paired duplex but has a central core of eight Watson-Crick base pairs flanked by unpaired terminal...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Spink N,Nunn CM,Vojtechovsky J,Berman HM,Neidle S

更新日期：1995-11-07 00:00:00

abstract：:Nucleosomes are the fundamental structural unit of chromatin. In addition to stabilizing the DNA polymer, nucleosomes are modified in ways that reflect and affect gene expression in their vicinity. It has long been assumed that nucleosomes can transmit memory of gene expression through their covalent posttranslational...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Schlissel G,Rine J

更新日期：2019-10-08 00:00:00

abstract：:A polypeptide was isolated from acid extracts of porcine hypothalami on the basis of its high ability to stimulate the release of corticotropin from superfused rat pituitary cells. After an initial separation by gel filtration on Sephadex G-25, further purification was carried out by reversed-phase HPLC. The isolated ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Patthy M,Horvath J,Mason-Garcia M,Szoke B,Schlesinger DH,Schally AV

更新日期：1985-12-01 00:00:00

abstract：:We have postulated that the toxic neuropathies associated with neurofilament-filled axonal swellings have a common pathogenesis, the covalent crosslinking of neurofilaments during anterograde transport. The newly described gamma-diketone, 3,4-dimethyl-2,5-hexanedione (DMHD), is a more potent analogue of the toxic meta...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Graham DG,Szakál-Quin G,Priest JW,Anthony DC

更新日期：1984-08-01 00:00:00

abstract：:Replication of complementary-strand DNA in filamentous phages is initiated by a primer RNA that is synthesized at the minus-strand origin on the viral single-stranded DNA by Escherichia coli RNA polymerase holoenzyme containing the sigma70 subunit. We have demonstrated that the affinity of RNA polymerase in vitro to t...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Higashitani A,Higashitani N,Horiuchi K

更新日期：1997-04-01 00:00:00

abstract：:In characterizing mice with targeted disruption of the SerpinB2 gene, we observed animals that were small at birth with delayed growth and decreased life expectancy. Although this phenotype cosegregated with homozygosity for the inactive SerpinB2 allele, analysis of homozygous SerpinB2-deficient mice derived from two ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Westrick RJ,Mohlke KL,Korepta LM,Yang AY,Zhu G,Manning SL,Winn ME,Dougherty KM,Ginsburg D

更新日期：2010-09-28 00:00:00

abstract：:Striatal enkephalin and dynorphin opioid systems mediate reward and negative affect, respectively, relevant to addiction disorders. We examined polymorphisms of proenkephalin (PENK) and prodynorphin (PDYN) genes in relation to heroin abuse and gene expression in the human striatum and the relevance of genetic dopamine...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Nikoshkov A,Drakenberg K,Wang X,Horvath MC,Keller E,Hurd YL

更新日期：2008-01-15 00:00:00

abstract：:Experiments were designed to determine the interrelationship between cyclic AMP and Ca(2+) during the processes of sperm capacitation and the acrosome reaction. In minimal culture media containing pyruvate and lactate as substrates, guinea pig spermatozoa required a minimum of 1.0-1.5 hr to capacitate in the presence ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Hyne RV,Garbers DL

更新日期：1979-11-01 00:00:00

abstract：:Guanylin and uroguanylin are intestinal peptides that stimulate chloride secretion by activating a common set of receptor-guanylate cyclase signaling molecules located on the mucosal surface of enterocytes. High mucosal acidity, similar to the pH occurring within the fluid microclimate domain at the mucosal surface of...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Hamra FK,Eber SL,Chin DT,Currie MG,Forte LR

更新日期：1997-03-18 00:00:00

abstract：:It has been a long-sought goal of quantum simulation to find answers to outstanding questions in condensed-matter physics. A famous example is finding the ground state and the excitations of the two-dimensional (2D) Hubbard model with strong repulsion below half-filling. This system is a doped antiferromagnet and is o...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Ho TL

更新日期：2020-10-20 00:00:00

abstract：:The development of Drosophila organ discs can be arrested by culturing them in adult male flies. These aged discs lose some of their differentiation competence and form incomplete imaginal structures. The more advanced the aging, the greater the loss of competence. Discs made to differentiate prematurely show deficien...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Schweizer P,Bodenstein D

更新日期：1975-11-01 00:00:00

abstract：:Gene regulatory networks (GRNs) provide a transformation function between the static genomic sequence and the primary spatial specification processes operating development. The regulatory information encompassed in developmental GRNs thus goes far beyond the control of individual genes. We here address regulatory info...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Peter IS,Davidson EH

更新日期：2017-06-06 00:00:00

abstract：:Causes of late Quaternary extinctions of large mammals ("megafauna") continue to be debated, especially for continental losses, because spatial and temporal patterns of extinction are poorly known. Accurate latest appearance dates (LADs) for such taxa are critical for interpreting the process of extinction. The extinc...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Haile J,Froese DG,Macphee RD,Roberts RG,Arnold LJ,Reyes AV,Rasmussen M,Nielsen R,Brook BW,Robinson S,Demuro M,Gilbert MT,Munch K,Austin JJ,Cooper A,Barnes I,Möller P,Willerslev E

更新日期：2009-12-29 00:00:00

abstract：:During performance of attention-demanding cognitive tasks, certain regions of the brain routinely increase activity, whereas others routinely decrease activity. In this study, we investigate the extent to which this task-related dichotomy is represented intrinsically in the resting human brain through examination of s...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Fox MD,Snyder AZ,Vincent JL,Corbetta M,Van Essen DC,Raichle ME

更新日期：2005-07-05 00:00:00

abstract：:The pathogenic species of Yersinia contain the transcriptional regulator RovA. In Yersinia pseudotuberculosis and Yersinia enterocolitica, RovA regulates expression of the invasion factor invasin (inv), which mediates translocation across the intestinal epithelium. A Y. enterocolitica rovA mutant has a significant dec...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Cathelyn JS,Crosby SD,Lathem WW,Goldman WE,Miller VL

更新日期：2006-09-05 00:00:00

abstract：:Transcriptional repression via methylation of histone H3 lysine 27 (H3K27) by the polycomb repressive complex 2 (PRC2) is conserved in higher eukaryotes. The Arabidopsis PRC2 controls homeotic gene expression, flowering time, and gene imprinting. Although downstream target genes and the regulatory mechanism of PRC2 ar...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Jeong CW,Roh H,Dang TV,Choi YD,Fischer RL,Lee JS,Choi Y

更新日期：2011-05-10 00:00:00

abstract：:B-1a cells reside in both the peritoneal cavity and the spleen. LPS stimulates splenic B-1a to differentiate to plasma cells producing natural IgM specific for microbial and self antigens. However, there are conflicting views as to whether the B-1a cells divide before this differentiation occurs, and hence how the res...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Yang Y,Tung JW,Ghosn EE,Herzenberg LA,Herzenberg LA

更新日期：2007-03-13 00:00:00

abstract：:Cellular differentiation leading to formation of the bradyzoite tissue cyst stage is the underlying cause of chronic toxoplasmosis. Consequently, mechanisms responsible for controlling development in the Toxoplasma intermediate life cycle have long been sought. Here, we identified 15 Toxoplasma mRNAs induced in early ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Radke JB,Lucas O,De Silva EK,Ma Y,Sullivan WJ Jr,Weiss LM,Llinas M,White MW

更新日期：2013-04-23 00:00:00

abstract：:The Wiskott-Aldrich syndrome protein (WASp) plays a major role in coupling T cell antigen receptor (TCR) stimulation to induction of actin cytoskeletal changes required for T cell activation. Here, we report that WASp inducibly binds the sorting nexin 9 (SNX9) in T cells and that WASp, SNX9, p85, and CD28 colocalize w...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Badour K,McGavin MK,Zhang J,Freeman S,Vieira C,Filipp D,Julius M,Mills GB,Siminovitch KA

更新日期：2007-01-30 00:00:00

abstract：:The role of Notch signaling in cartilage differentiation and maturation in vivo was examined. Conditional Notch pathway gain and loss of function was achieved using a Cre/loxP approach to manipulate Notch signaling in cartilage precursors and chondrocytes of the developing mouse embryo. Conditional overexpression of a...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Mead TJ,Yutzey KE

更新日期：2009-08-25 00:00:00

abstract：:Recently, it has been reported that there is a differential subcellular distribution of components of the minor U12-dependent and major U2-dependent spliceosome, and further that the minor spliceosome functions in the cytoplasm. To study the subcellular localization of the snRNA components of both the major and minor ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Pessa HK,Will CL,Meng X,Schneider C,Watkins NJ,Perälä N,Nymark M,Turunen JJ,Lührmann R,Frilander MJ

更新日期：2008-06-24 00:00:00

abstract：:Hox5 genes (Hoxa5, Hoxb5, Hoxc5) are exclusively expressed in the lung mesenchyme during embryogenesis, and the most severe phenotypes result from constitutive loss of function of all three genes. Because Hox5 triple null mutants exhibit perinatal lethality, the contribution of this paralogous group to postembryonic l...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Hrycaj SM,Marty-Santos L,Cebrian C,Rasky AJ,Ptaschinski C,Lukacs NW,Wellik DM

更新日期：2018-11-06 00:00:00

abstract：:The Mediator complex forms the bridge between transcriptional activators and RNA polymerase II. Mediator subunit Med1/TRAP220 is a key component of Mediator originally found to associate with nuclear hormone receptors. Med1 deficiency causes lethality at embryonic day 11.5 because of defects in heart and placenta deve...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Stumpf M,Waskow C,Krötschel M,van Essen D,Rodriguez P,Zhang X,Guyot B,Roeder RG,Borggrefe T

更新日期：2006-12-05 00:00:00

abstract：:Macrophages (M phi) are activated by IFN gamma and are important cellular targets for infection by human and murine cytomegalovirus (MCMV), making it advantageous for CMVs to block IFN gamma-induced M phi differentiation. We found that MCMV infection inhibited IFN gamma regulation of many genes in M phi. MCMV infectio...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Popkin DL,Watson MA,Karaskov E,Dunn GP,Bremner R,Virgin HW 4th

更新日期：2003-11-25 00:00:00

abstract：:Cell fate determination depends in part on the establishment of specific transcriptional programs of gene expression. These programs result from the interpretation of the genomic cis-regulatory information by sequence-specific factors. Decoding this information in sequenced genomes is an important issue. Here, we deve...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Rouault H,Mazouni K,Couturier L,Hakim V,Schweisguth F

更新日期：2010-08-17 00:00:00