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  • Lunar and Planetary Science and Exploration  (3)
  • Humans  (2)
  • 2015-2019  (4)
  • 1995-1999  (1)
  • 1985-1989
  • 1
    Publication Date: 1996-04-26
    Description: Deficiencies in mismatch repair have been linked to a common cancer predisposition syndrome in humans, hereditary nonpolyposis colorectal cancer (HNPCC), and a subset of sporadic cancers. Here, several mismatch repair-deficient tumor cell lines and HNPCC-derived lymphoblastoid cell lines were found to be deficient in an additional DNA repair process termed transcription-coupled repair (TCR). The TCR defect was corrected in a mutant cell line whose mismatch repair deficiency had been corrected by chromosome transfer. Thus, the connection between excision repair and mismatch repair previously described in Escherichia coli extends to humans. These results imply that deficiencies in TCR and exposure to carcinogens present in the environment may contribute to the etiology of tumors associated with genetic defects in mismatch repair.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mellon, I -- Rajpal, D K -- Koi, M -- Boland, C R -- Champe, G N -- GM45535-03/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1996 Apr 26;272(5261):557-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Program in Toxicology, Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614807" target="_blank"〉PubMed〈/a〉
    Keywords: *Adenosine Triphosphatases ; Colorectal Neoplasms, Hereditary Nonpolyposis/*genetics ; DNA Damage ; *DNA Repair ; *DNA Repair Enzymes ; *DNA-Binding Proteins ; Humans ; Lymphocytes/cytology ; MutS Homolog 2 Protein ; *Mutation ; Neoplasm Proteins/genetics ; Neoplasms/*genetics ; Proto-Oncogene Proteins/genetics ; Pyrimidine Dimers/metabolism ; Tetrahydrofolate Dehydrogenase/genetics ; *Transcription, Genetic ; Tumor Cells, Cultured ; Ultraviolet Rays
    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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  • 2
    Publication Date: 2015-03-04
    Description: Inflammation promotes regeneration of injured tissues through poorly understood mechanisms, some of which involve interleukin (IL)-6 family members, the expression of which is elevated in many diseases including inflammatory bowel diseases and colorectal cancer. Here we show in mice and human cells that gp130, a co-receptor for IL-6 cytokines, triggers activation of YAP and Notch, transcriptional regulators that control tissue growth and regeneration, independently of the gp130 effector STAT3. Through YAP and Notch, intestinal gp130 signalling stimulates epithelial cell proliferation, causes aberrant differentiation and confers resistance to mucosal erosion. gp130 associates with the related tyrosine kinases Src and Yes, which are activated on receptor engagement to phosphorylate YAP and induce its stabilization and nuclear translocation. This signalling module is strongly activated upon mucosal injury to promote healing and maintain barrier function.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4447318/" 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/PMC4447318/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Taniguchi, Koji -- Wu, Li-Wha -- Grivennikov, Sergei I -- de Jong, Petrus R -- Lian, Ian -- Yu, Fa-Xing -- Wang, Kepeng -- Ho, Samuel B -- Boland, Brigid S -- Chang, John T -- Sandborn, William J -- Hardiman, Gary -- Raz, Eyal -- Maehara, Yoshihiko -- Yoshimura, Akihiko -- Zucman-Rossi, Jessica -- Guan, Kun-Liang -- Karin, Michael -- CA118165-09/CA/NCI NIH HHS/ -- CA132809/CA/NCI NIH HHS/ -- DP2 OD008469/OD/NIH HHS/ -- EY022611/EY/NEI NIH HHS/ -- R00 DK088589/DK/NIDDK NIH HHS/ -- R01 CA118165/CA/NCI NIH HHS/ -- England -- Nature. 2015 Mar 5;519(7541):57-62. doi: 10.1038/nature14228. Epub 2015 Feb 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Laboratory of Gene Regulation and Signal Transduction, University of California, San Diego, La Jolla, California 92093, USA [2] Departments of Pharmacology and Pathology, University of California, San Diego, La Jolla, California 92093, USA [3] Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan [4] Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo 160-8582, Japan. ; 1] Laboratory of Gene Regulation and Signal Transduction, University of California, San Diego, La Jolla, California 92093, USA [2] Institute of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan. ; 1] Laboratory of Gene Regulation and Signal Transduction, University of California, San Diego, La Jolla, California 92093, USA [2] Fox Chase Cancer Center, Cancer Prevention and Control Program, Philadelphia, Pennsylvania 19111, USA. ; Department of Medicine, University of California, San Diego, La Jolla, California 92093, USA. ; 1] Departments of Pharmacology and Pathology, University of California, San Diego, La Jolla, California 92093, USA [2] Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, USA [3] Department of Biology, Lamar University, PO Box 10037, Beaumont, Texas 77710, USA. ; 1] Departments of Pharmacology and Pathology, University of California, San Diego, La Jolla, California 92093, USA [2] Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, USA [3] Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China. ; Laboratory of Gene Regulation and Signal Transduction, University of California, San Diego, La Jolla, California 92093, USA. ; Department of Medicine, VA San Diego Healthcare System, San Diego, California 92161, USA. ; Inflammatory Bowel Disease Center, Division of Gastroenterology, Department of Medicine, School of Medicine, University of California, San Diego, La Jolla, California 92093, USA. ; 1] Department of Medicine, Medical University of South Carolina, Charleston, South Carolina 29425, USA [2] CSRC and BIMRC, San Diego State University, San Diego, California 92182, USA. ; Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan. ; 1] Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo 160-8582, Japan [2] Japan Science and Technology Agency, CREST, Tokyo 102-0076, Japan. ; 1] Inserm, UMR 1162, Genomique fonctionnelle des tumeurs solides, IUH, Paris 75010, France [2] Universite Paris Descartes, Labex Immuno-oncology, Sorbonne Paris Cite, Faculte de Medicine, Paris 75006, France. ; 1] Departments of Pharmacology and Pathology, University of California, San Diego, La Jolla, California 92093, USA [2] Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, USA. ; 1] Laboratory of Gene Regulation and Signal Transduction, University of California, San Diego, La Jolla, California 92093, USA [2] Departments of Pharmacology and Pathology, University of California, San Diego, La Jolla, California 92093, USA [3] 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/25731159" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/*metabolism ; Animals ; Body Weight ; Cell Differentiation ; Cell Proliferation ; Cytokine Receptor gp130/*metabolism ; Disease Models, Animal ; Enzyme Activation ; Epithelial Cells/*cytology/metabolism/pathology ; HEK293 Cells ; Homeostasis ; Humans ; Inflammation/*metabolism/pathology ; Inflammatory Bowel Diseases/metabolism/pathology ; Intestinal Mucosa/*cytology/metabolism/pathology ; Mice ; Phosphoproteins/*metabolism ; Proto-Oncogene Proteins c-yes/metabolism ; Proto-Oncogene Proteins pp60(c-src)/*metabolism ; Receptors, Notch/metabolism ; *Regeneration ; Signal Transduction ; Up-Regulation
    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: 2019-07-13
    Description: No abstract available
    Keywords: Lunar and Planetary Science and Exploration
    Type: SSC15-XI-3 , Annual AIAA/USU Conference on Small Satellites; Aug 08, 2015 - Aug 13, 2015; Logan, UT; United States
    Format: text
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  • 4
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    In:  CASI
    Publication Date: 2019-08-24
    Description: Mars surface conditions where liquid water is absent were simulated for the purposes of laboratory research. A pressure-temperature (P-T) profile was maintained in which no combination of pressure or temperature corresponds to the liquid region of the water phase diagram. The triple point of pure water occurs at T = 0.1oC and P(H2O) = 6.01 mbar; therefore all temperatures and pressures must be kept below these values, respectively. A 35-day test was performed in a commercial planetary simulation system (Techshot, Inc., Greenville, IN) in which the minimum night-time temperature was -80oC, the maximum daytime temperature was +26oC, the simulated day-night light cycle in earth hours was 12-on and 12-off, and the total pressure of the pure CO2 atmosphere was maintained below 11 mbar. Any water present was allowed to equilibrate with the changing temperature and pressure. The gas phase was sampled into a CR1-A condensation-mirror low-pressure hygrometer, which uses liquid nitrogen (down to 77oK) to determine the dew point (Buck Technologies, Boulder, CO). Dew point was measured once every hour and recorded on a data logger, along with the varying temperature in the chamber, from which the partial pressure of water was calculated. The resulting calculated daily cycles were tracked on the water P-T diagram, and no points were found to fall within the liquid-phase region of the diagram. It is concluded that there was no liquid water present throughout the test except during the initial pump-down period when aqueous specimens were introduced on the first day (less than 1 hour). Mars regolith simulant was present during this test, and further investigation is needed to determine whether liquid water could have been present or absent in the regolith in the form of brine. Biological samples consisting of Cyanobacteria: Anabena sp., Chroococcidiopsis CCMEE171, Plectonema boryanum; Eubacteria: Bacillus subtilis, Pseudomonas aeruginosa, and Eukaryota: Chlorella ellipsoidia were maintained in the simulator under the above-described conditions. The exposed specimens were tested for intracellular esterase activity, chlorophyll content (where appropriate) and reproductive survival. All tests yielded low-level positive results in all cases. In parallel to these terrestrial studies a planned design study was undertaken for the proposed test bed. Design requirements include compact assembly for transport and installation on the planetary surface (multiple units per mission would be expected), protective internal package for the release of organisms, a means of atmosphere exchange, access to sunlight, a means of penetrating the planetary surface, and most importantly a means of acquiring regolith while meeting the requirements of planetary protection. In consultation with advisers a design was created, and a large-scale mock-up of this design was fabricated by additive manufacturing at Techshot, Inc. with moving parts that simulated the components of the design. The mock-up assembly has been demonstrated to interested parties. A means of detecting live metabolism will also be included in the test bed. Several options were reviewed, and it is concluded that, by the time the ecopoiesis test bed is ready for testing the optimum instrument will be the equivalent of a hand-held mass spectrometer for metabolic gas analysis. This will maximize versatility and reveal much more information than could a detector of a single product (such as molecular oxygen), and the
    Keywords: Lunar and Planetary Science and Exploration
    Type: HQ-E-DAA-TN62823
    Format: application/pdf
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  • 5
    Publication Date: 2019-07-13
    Description: From canyons to glaciers, from geology to astrobiology, the amount of exciting surface science awaiting us at Mars greatly outstrips available mission opportunities. Based on the thrice -flown Aerospace Corporation Earth Reentry Breakup Recorder (REBR), we present a method for accurate landing of small instrument payloads on Mars, utilizing excess cruise -stage mass on larger missions. One to a few such microlanders might add 1-5% to the cost of a primary mission with inconsequential risk. Using the REBR and JPL Deep Space 2 starting points for a passively stable entry vehicle provides a low mass and low ballistic coefficient, enabling subsonic d employment of a steerable parawing glider, capable of 10+ km of guided flight at a 3:1 glide ratio. Originally developed for the Gemini human space program, the parawing is attractive for a volume -limited microprobe, minimizing descent velocity, and providing sufficient remaining volume for a useful scientific payload. The ability to steer the parawing during descent opens unique opportunities, including terrain- relative navigation for landing within tens of meters of one of several specified targets within a given uncertainty ellipse. In addition to scientific value, some Mars human exploration Strategic Knowledge Gaps could be addressed with deployment of focused instruments at multiple locations.
    Keywords: Lunar and Planetary Science and Exploration
    Type: SSC15-XI-3 , Annual AIAA/USU Conference on Small Satellites; Aug 08, 2015 - Aug 13, 2015; Logan, UT; United States
    Format: text
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