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  • 1
    Publication Date: 2013-02-01
    Description: The lysosomal degradation pathway of autophagy has a crucial role in defence against infection, neurodegenerative disorders, cancer and ageing. Accordingly, agents that induce autophagy may have broad therapeutic applications. One approach to developing such agents is to exploit autophagy manipulation strategies used by microbial virulence factors. Here we show that a peptide, Tat-beclin 1-derived from a region of the autophagy protein, beclin 1, which binds human immunodeficiency virus (HIV)-1 Nef-is a potent inducer of autophagy, and interacts with a newly identified negative regulator of autophagy, GAPR-1 (also called GLIPR2). Tat-beclin 1 decreases the accumulation of polyglutamine expansion protein aggregates and the replication of several pathogens (including HIV-1) in vitro, and reduces mortality in mice infected with chikungunya or West Nile virus. Thus, through the characterization of a domain of beclin 1 that interacts with HIV-1 Nef, we have developed an autophagy-inducing peptide that has potential efficacy in the treatment of human diseases.〈br /〉〈br /〉〈a href="" target="_blank"〉〈img src="" border="0"〉〈/a〉   〈a href="" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shoji-Kawata, Sanae -- Sumpter, Rhea -- Leveno, Matthew -- Campbell, Grant R -- Zou, Zhongju -- Kinch, Lisa -- Wilkins, Angela D -- Sun, Qihua -- Pallauf, Kathrin -- MacDuff, Donna -- Huerta, Carlos -- Virgin, Herbert W -- Helms, J Bernd -- Eerland, Ruud -- Tooze, Sharon A -- Xavier, Ramnik -- Lenschow, Deborah J -- Yamamoto, Ai -- King, David -- Lichtarge, Olivier -- Grishin, Nick V -- Spector, Stephen A -- Kaloyanova, Dora V -- Levine, Beth -- K08 AI099150/AI/NIAID NIH HHS/ -- P30 CA142543/CA/NCI NIH HHS/ -- R01 GM066099/GM/NIGMS NIH HHS/ -- R01 GM079656/GM/NIGMS NIH HHS/ -- R01 GM094575/GM/NIGMS NIH HHS/ -- R01 NS050199/NS/NINDS NIH HHS/ -- R01 NS077111/NS/NINDS NIH HHS/ -- R01 NS084912/NS/NINDS NIH HHS/ -- R0I DK083756/DK/NIDDK NIH HHS/ -- R0I DK086502/DK/NIDDK NIH HHS/ -- R0I GM066099/GM/NIGMS NIH HHS/ -- R0I GM079656/GM/NIGMS NIH HHS/ -- R0I NS063973/NS/NINDS NIH HHS/ -- R0I NS077874/NS/NINDS NIH HHS/ -- RC1 DK086502/DK/NIDDK NIH HHS/ -- T32 GM008297/GM/NIGMS NIH HHS/ -- U54 AI057156/AI/NIAID NIH HHS/ -- U54AI057156/AI/NIAID NIH HHS/ -- U54AI057160/AI/NIAID NIH HHS/ -- Cancer Research UK/United Kingdom -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Feb 14;494(7436):201-6. doi: 10.1038/nature11866. Epub 2013 Jan 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, UT Southwestern Medical Center, Dallas, Texas 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Apoptosis Regulatory Proteins/*chemistry/metabolism/pharmacology/*therapeutic use ; Autophagy/*drug effects ; Cell Membrane Permeability ; Cells, Cultured ; Chikungunya virus/drug effects ; HIV-1/drug effects/metabolism/physiology ; HeLa Cells ; Humans ; Macrophages/cytology ; Membrane Proteins/*chemistry/metabolism/pharmacology/*therapeutic use ; Mice ; Molecular Sequence Data ; Peptide Fragments/*chemistry/metabolism/*pharmacology ; Recombinant Fusion Proteins/chemistry/metabolism/pharmacology ; Virus Replication/drug effects ; West Nile virus/drug effects ; nef Gene Products, Human Immunodeficiency Virus/metabolism ; tat Gene Products, Human Immunodeficiency Virus/genetics/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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