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  • MECHANICAL ENGINEERING  (2)
  • Carcinoma, Lewis Lung/*immunology/pathology/therapy  (1)
  • Carcinoma, Pancreatic Ductal/*immunology/pathology  (1)
  • 1
    Publication Date: 2010-11-06
    Description: The stromal microenvironment of tumors, which is a mixture of hematopoietic and mesenchymal cells, suppresses immune control of tumor growth. A stromal cell type that was first identified in human cancers expresses fibroblast activation protein-alpha (FAP). We created a transgenic mouse in which FAP-expressing cells can be ablated. Depletion of FAP-expressing cells, which made up only 2% of all tumor cells in established Lewis lung carcinomas, caused rapid hypoxic necrosis of both cancer and stromal cells in immunogenic tumors by a process involving interferon-gamma and tumor necrosis factor-alpha. Depleting FAP-expressing cells in a subcutaneous model of pancreatic ductal adenocarcinoma also permitted immunological control of growth. Therefore, FAP-expressing cells are a nonredundant, immune-suppressive component of the tumor microenvironment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kraman, Matthew -- Bambrough, Paul J -- Arnold, James N -- Roberts, Edward W -- Magiera, Lukasz -- Jones, James O -- Gopinathan, Aarthi -- Tuveson, David A -- Fearon, Douglas T -- Cancer Research UK/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2010 Nov 5;330(6005):827-30. doi: 10.1126/science.1195300.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Trust Immunology Unit, Department of Medicine, University of Cambridge, Medical Research Council Centre, Hills Road, Cambridge CB2 2QH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21051638" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Neoplasm/immunology ; Cancer Vaccines/administration & dosage/immunology ; Carcinoma, Lewis Lung/*immunology/pathology/therapy ; Carcinoma, Pancreatic Ductal/*immunology/pathology ; Cell Hypoxia ; Cell Line, Tumor ; Cell Survival ; Gelatinases/*metabolism ; *Immune Tolerance ; Interferon-gamma/immunology/metabolism ; Membrane Proteins/*metabolism ; Mice ; Mice, Transgenic ; Necrosis ; Neoplasm Transplantation ; Serine Endopeptidases/*metabolism ; Stromal Cells/*immunology/metabolism ; Tumor Microenvironment/*immunology ; Tumor Necrosis Factor-alpha/immunology/metabolism
    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: 2013-08-31
    Description: The performance of dry-lubricated, angular contact ball bearings in vacuum at a temperature of 20 degrees K has been investigated, and is compared with the in-vacuo performance at room temperatures. Bearings were lubricated using dry-lubricant techniques which have been previously established for space applications involving operations at or near room temperature. Comparative tests were undertaken using three lubricants: molybdenum disulphide, lead, and PTFE. Results obtained using the three lubricants are presented.
    Keywords: MECHANICAL ENGINEERING
    Type: NASA, Marshall Space Flight Center, The 23rd Aerospace Mechanisms Symposium; p 319-333
    Format: application/pdf
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  • 3
    Publication Date: 2013-08-31
    Description: This paper describes the development of dry-lubricated linear bearings for use on the Michelson interferometer for passive atmospheric sounding (MIPAS). Two candidate bearing systems were developed and tested. In the first, use was made of linear roller (needle) bearings equipped with a pulley-and-cable arrangement to prevent cage drift and to minimize roller slip. The second design was of a roller-guided bearing system in which guidance was provided by all bearings rolling along guide rods. The paper focuses on the development of these linear bearings systems and describes the approach taken in terms of bearing design, lubrication methods, screening programs, and thermal-vacuum testing. Development difficulties are highlighted and the solutions ultimately adopted are described.
    Keywords: MECHANICAL ENGINEERING
    Type: NASA. Lewis Research Center, The 28th Aerospace Mechanisms Symposium; p 245-264; NASA-CP-3260
    Format: application/pdf
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