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  • 1
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    Inactivation of PI(3)K p110delta breaks regulatory T-cell-mediated immune tolerance to cancer (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-06-12
    Description: Inhibitors against the p110delta isoform of phosphoinositide-3-OH kinase (PI(3)K) have shown remarkable therapeutic efficacy in some human leukaemias. As p110delta is primarily expressed in leukocytes, drugs against p110delta have not been considered for the treatment of solid tumours. Here we report that p110delta inactivation in mice protects against a broad range of cancers, including non-haematological solid tumours. We demonstrate that p110delta inactivation in regulatory T cells unleashes CD8(+) cytotoxic T cells and induces tumour regression. Thus, p110delta inhibitors can break tumour-induced immune tolerance and should be considered for wider use in oncology.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4501086/" 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/PMC4501086/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ali, Khaled -- Soond, Dalya R -- Pineiro, Roberto -- Hagemann, Thorsten -- Pearce, Wayne -- Lim, Ee Lyn -- Bouabe, Hicham -- Scudamore, Cheryl L -- Hancox, Timothy -- Maecker, Heather -- Friedman, Lori -- Turner, Martin -- Okkenhaug, Klaus -- Vanhaesebroeck, Bart -- 095691/Wellcome Trust/United Kingdom -- 095691/Z/11/Z/Wellcome Trust/United Kingdom -- 12888/Cancer Research UK/United Kingdom -- 14355/Cancer Research UK/United Kingdom -- A10200/Cancer Research UK/United Kingdom -- A12888/Cancer Research UK/United Kingdom -- A15965/Cancer Research UK/United Kingdom -- BB/E009867/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- C18270/A12888/Cancer Research UK/United Kingdom -- C23338/A10200/Cancer Research UK/United Kingdom -- C23338/A15965/Cancer Research UK/United Kingdom -- England -- Nature. 2014 Jun 19;510(7505):407-11. doi: 10.1038/nature13444. Epub 2014 Jun 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] UCL Cancer Institute, Paul O'Gorman Building, University College London, 72 Huntley Street London WC1E 6DD, UK [2]. ; 1] Laboratory of Lymphocyte Signalling and Development, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK [2] [3]. ; Centre for Cancer and Inflammation, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK. ; UCL Cancer Institute, Paul O'Gorman Building, University College London, 72 Huntley Street London WC1E 6DD, UK. ; Laboratory of Lymphocyte Signalling and Development, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK. ; Mary Lyon Centre, MRC Harwell, Harwell Science and Innovation Campus, Harwell OX11 0RD, UK. ; Piramed Pharma, 957 Buckingham Avenue, Slough, Berkshire SL1 4NL, UK. ; Cancer Signaling and Translational Oncology, Genentech Inc, 1 DNA Way, South San Francisco, California 94080-4990, USA. ; 1] Laboratory of Lymphocyte Signalling and Development, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK [2].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24919154" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antineoplastic Agents/pharmacology ; Enzyme Activation/drug effects ; Enzyme Inhibitors/*pharmacology ; Immune Tolerance/*drug effects/immunology ; Mice ; Neoplasms/*enzymology/*immunology ; Phosphatidylinositol 3-Kinases/*metabolism ; T-Lymphocytes, Regulatory/*drug effects/enzymology/immunology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 2
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    Alpha particle damage in biotite characterized by microfocus X-ray diffraction and Fe K-edge X-ray absorption spectroscopy (2013)
    Mineralogical Society of Great Britain and Ireland
    Details
    Publication Date: 2013-08-22
    Description: Combined microfocus XAS and XRD analysis of α-particle radiation damage haloes around thorium-containing monazite in Fe-rich biotite reveals changes in both short- and long-range order. The total α-particles flux derived from the Th and U in the monazite over 1.8 Ga was 0.022 α particles per atomic component of the monazite and this caused increasing amounts of structural damage as the monazite emitter is approached. Short-range order disruption revealed by Fe K -edge EXAFS is manifest by a high variability in Fe–Fe bond lengths and a marked decrease in coordination number. XANES examination of the Fe K -edge shows a decrease in energy of the main absorption by up to 1 eV, revealing reduction of the Fe 3+ components of the biotite by interaction with the $${}_{2}^{4}{\mathrm{He}}^{2+}$$ , the result of low and thermal energy electrons produced by the cascade of electron collisions. Changes in d spacings in the XRD patterns reveal the development of polycrystallinity and new domains of damaged biotite structure with evidence of displaced atoms due to ionization interactions and nuclear collisions. The damage in biotite is considered to have been facilitated by destruction of OH groups by radiolysis and the development of Frenkel pairs causing an increase in the trioctahedral layer distances and contraction within the trioctahedral layers. The large amount of radiation damage close to the monazite can be explained by examining the electronic stopping flux.
    Print ISSN: 0026-461X
    Electronic ISSN: 1471-8022
    Topics: Geosciences
    Published by Mineralogical Society of Great Britain and Ireland
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