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  • 1
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    A chemical inhibitor of p53 that protects mice from the side effects of cancer therapy (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-11
    Description: Chemotherapy and radiation therapy for cancer often have severe side effects that limit their efficacy. Because these effects are in part determined by p53-mediated apoptosis, temporary suppression of p53 has been suggested as a therapeutic strategy to prevent damage of normal tissues during treatment of p53-deficient tumors. To test this possibility, a small molecule was isolated for its ability to reversibly block p53-dependent transcriptional activation and apoptosis. This compound, pifithrin-alpha, protected mice from the lethal genotoxic stress associated with anticancer treatment without promoting the formation of tumors. Thus, inhibitors of p53 may be useful drugs for reducing the side effects of cancer therapy and other types of stress associated with p53 induction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Komarov, P G -- Komarova, E A -- Kondratov, R V -- Christov-Tselkov, K -- Coon, J S -- Chernov, M V -- Gudkov, A V -- CA60730/CA/NCI NIH HHS/ -- CA75179/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 10;285(5434):1733-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics, University of Illinois at Chicago, Chicago, IL 60607, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10481009" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antineoplastic Agents/*adverse effects/pharmacology ; Apoptosis/*drug effects ; Benzothiazoles ; Cell Division/drug effects ; Cell Line ; Cell Nucleus/drug effects/metabolism ; Cytoplasm/drug effects/metabolism ; DNA/biosynthesis ; DNA Damage ; G2 Phase/drug effects ; Gamma Rays/*adverse effects ; Humans ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, Nude ; Neoplasms/drug therapy/radiotherapy/*therapy ; Radiation Tolerance/*drug effects ; Thiazoles/*pharmacology ; Time Factors ; Toluene/*analogs & derivatives/pharmacology ; Tumor Cells, Cultured ; Tumor Suppressor Protein p53/*antagonists & inhibitors/physiology ; Ultraviolet Rays/adverse effects
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Structural basis of TLR5-flagellin recognition and signaling (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-02-22
    Description: Toll-like receptor 5 (TLR5) binding to bacterial flagellin activates signaling through the transcription factor NF-kappaB and triggers an innate immune response to the invading pathogen. To elucidate the structural basis and mechanistic implications of TLR5-flagellin recognition, we determined the crystal structure of zebrafish TLR5 (as a variable lymphocyte receptor hybrid protein) in complex with the D1/D2/D3 fragment of Salmonella flagellin, FliC, at 2.47 angstrom resolution. TLR5 interacts primarily with the three helices of the FliC D1 domain using its lateral side. Two TLR5-FliC 1:1 heterodimers assemble into a 2:2 tail-to-tail signaling complex that is stabilized by quaternary contacts of the FliC D1 domain with the convex surface of the opposing TLR5. The proposed signaling mechanism is supported by structure-guided mutagenesis and deletion analyses on CBLB502, a therapeutic protein derived from FliC.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3406927/" 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/PMC3406927/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yoon, Sung-il -- Kurnasov, Oleg -- Natarajan, Venkatesh -- Hong, Minsun -- Gudkov, Andrei V -- Osterman, Andrei L -- Wilson, Ian A -- AI042266/AI/NIAID NIH HHS/ -- R01 AI042266/AI/NIAID NIH HHS/ -- R01 AI042266-05/AI/NIAID NIH HHS/ -- R01 AI080446/AI/NIAID NIH HHS/ -- R01 AI080446-05/AI/NIAID NIH HHS/ -- RC2 AI087616/AI/NIAID NIH HHS/ -- RC2 AI087616-02/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2012 Feb 17;335(6070):859-64. doi: 10.1126/science.1215584.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22344444" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Crystallography, X-Ray ; Dimerization ; Flagellin/*chemistry/metabolism ; Models, Molecular ; Mutagenesis ; Protein Conformation ; Salmonella enterica ; *Signal Transduction ; Structure-Activity Relationship ; Toll-Like Receptor 5/*chemistry/genetics/metabolism ; Zebrafish ; Zebrafish Proteins/*chemistry/genetics/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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