2007 Fiscal Year Final Research Report Summary
Study of anti-APOBEC3G activities of HIV-1 Vif proteins among different subtypes
Project/Area Number |
18590460
|
Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Virology
|
Research Institution | National Institute of Infectious Diseases |
Principal Investigator |
TOKUNAGA Kenzo National Institute of Infectious Diseases, Dept of Pathology, PI (50342895)
|
Co-Investigator(Kenkyū-buntansha) |
TATSUMI Masashi Natl Inst of Infectious Diseases, AIDS Res Ctr, Chief (00133629)
ISHIZAKA Yukihito Internatl Med Ctr of Japan, Dept. of Intractable Diseases, Dept. Head (30281687)
SATA Tetsutaro Natl Inst of Infectious Diseases, Dept of Pathology, Dept. Head (00162397)
|
Project Period (FY) |
2006 – 2007
|
Keywords | HIV-1 / subtype / Vif / APOBEC3 |
Research Abstract |
Antiretroviral cytidine deaminase APOBEC3G, which is abundantly expressed in peripheral blood lymphocytes and macrophages, strongly protects these cells against HIV-I infection. The Vif protein of HIV-1 overcomes this antiviral effect by inducing proteasome-mediated degradation of APOBEC3G, and is a key for maintaining viral infectivity. The vif gene, which is 579-bp long, displays high genetic diversity among HIV-I subtypes and it is therefore intriguing to address whether Vif proteins derived from different subtypes might be differ in the viral defense activity against APOBEC3G. To test this, we created expression plasmids encoding Vif proteins derived from subtypes A, B, C, CRF01_AE, and CRF02_AG clinical isolates and compared their anti-APOBEC3G activities. Viruses, produced from cells in the presence of APOBEC3G and Vif proteins of different subtypes, showed differential viral infectivities, that is, subtype C-derived Vif proteins showed exclusively high anti-APOBEC3G activities, compared with any. other subtype-derived Vif proteins, and this was found to be because of the different levels of proteasomal APOBEC3G degradation by Vif, depending on subtypes. To determine which portion of subtype C-Vif protein would be responsible for the robust anit-APOBEC3G activities, we created chimeric Vif constructs between subtypes B and C, and further pursued the responsible amino acid (s) by generating point mutants of Vif plasmids. As a result, we identified two amino acids at N-terminus responsible for subtype C-Vif-specific anti-APOBEC3G activity. Intriguingly, one of these amino acids is contained in the conserved sequence which is proposed to be involved in the interaction with APOBEC3G, suggesting that subtype C-vif might be able to bind APOBEC3G more efficiently than do Vif proteins of other subtypes. These results imply that biological differences of Vif proteins among subtypes might have an impact on viral transmissibility.
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Research Products
(34 results)
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[Journal Article] Inhibitory function of adapter-related protein complex 2 alpha 1 subunit in the process of nuclear translocation of human immunodeficiency virus type 1 genome.2008
Author(s)
Kitagawa, Y., Kameoka, M., Shoji-Kawata, S., Iwabu, Y., Mizuta, H., Tokunaga, K., Fujino, M., Natori, Y., Yura, Y. and Ikuta, K.
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Journal Title
Virology 373
Pages: 171-180
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Modulation of TNF-α-converting enzyme by the spike protein of SARS-CoV and ACE2 induces TNF-α production and facilitates viral entry.2008
Author(s)
Haga, S., Yamamoto, N., Nakai-Murakami, C., Osawa, Y., Tokunaga, K., Sata, T., Yamamoto, N., Sasazuki, T., and Ishizaka, Y.
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Journal Title
Proc. Natl. Acad. Sci. U.S.A. 105
Pages: 7809-7814
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] HIV-1 Vpr induces ATM-dependent cellular signal with enhanced homologous recombination.2007
Author(s)
Nakai-Murakami, C., Shimura, M., Kinomoto, M., Takizawa, Y., Tokunaga, K., Taguchi, T., Hoshino, S., Miyagawa, K., Sata, T., Kurumizaka, H., Yuo, A., and Ishizaka, Y.
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Journal Title
Oncogene 26
Pages: 477-486
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Successful Mouse Cloning of an Outbred Strain by Tricho statin A Treatment after Somatic Nuclear Transfer.2007
Author(s)
Kishigami, S., Bui, H. T., Wakayama, S., Tokunaga, K., Thuan, N. V., Hikichi, T., Mizutani, E., Ohta, H., Suetsugu, R., Sata, T. and Wakayama, T.
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Journal Title
J. Reprod. Dev. 53
Pages: 165-170
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] All APOBEC3 family proteins differentially inhibit LINE-1 retrotransposition.2007
Author(s)
Kinomoto, M, Kanno, T, Shimura, M, Ishizaka, Y, Kojima, A, Kurata, T, Sata, T, and Tokunaga K.
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Journal Title
Nucleic Acids Res. 35
Pages: 2955-2964
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Identification of the suppressive factors for human immunodeficiency virus type-1 replication using the siRNA mini-library directed against host cellular genes.2007
Author(s)
Kameoka, M., Kitagawa, Y., Utachee, P., Jinnopat, P., Dhepakson, P., Isarangkura-Na-Ayuthaya, P., Tokunaga, K., Sato, H., Komano, J, Yamamoto, N, Oguchi, S., Natori, Y., Ikuta, K.
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Journal Title
Biochem. Biophys. Res. Commun. 359
Pages: 729-734
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] HiV-1 Vpr induces ATM-dependent cellular signal with enhanced homologous recombination.2007
Author(s)
Nakai-Murakami, C., Shimura, M., Kinomoto, M., Takizawa, Y., Tokunaga, K., Taguchi, T., Hoshino, S., Miyagawa, K., Sata, T., Kurumizaka, H., You, A., Ishizaka, Y.
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Journal Title
Oncogene 26
Pages: 477-486
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Successful Mouse Cloning of an Outbred Strain by Trichostatin A Treatment after Somatic Nuclear Transfer.2007
Author(s)
Kishigami, S., Bui, H. T., Wakayama, S., Tokunaga, K., Thuan, N.V., Hikichi, T., Mizutani, E., Ohta, H., Suetsugu, R., Sata, T. Wakayama, T.
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Journal Title
J. Reprod. Dev 53
Pages: 165-170
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] All APOBEC3 family proteins differentially inhibit LINE-1 retrotransposition.2007
Author(s)
Kinomoto, M, Kanno, T, Shimura, M, Ishizaka, Y, Kojima, A, Kurata, T, Sata, T, Tokunaga K.
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Journal Title
Nucleic Acids Res. 35
Pages: 2955-2964
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] HIV-1 Vpr induces DNA double-strand breaks.2006
Author(s)
Tachiwana, H., Shimura, M., Nakai-Murakami, C., Tokunaga, K., Takizawa, Y., Sata, T., Kurumizaka, H., and Ishizaka, Y.
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Journal Title
Cancer Res. 66
Pages: 627-631
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] Tristetraprolin inhibits HIV-1 production by binding to genomic RNA.2006
Author(s)
Maeda, M., Sawa, H., Tobiume, M., Tokunaga, K., Hasegawa, H., Ichinohe, T., Sata, T., Moriyama, M., Hall, W. W., Kurata, T., and Takahashi, H.
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Journal Title
Microbes Infect. 8
Pages: 2647-2656
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] HIV-1 Vpr induces DNA double -strand breaks.2006
Author(s)
Tachiwana, H., Shimura, M., Nakai-Murakami, C., Tokunaga, K., Takizawa, Y., Sata, T., Kurumizaka, H., Ishizaka, Y.
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Journal Title
Cancer Res. 66
Pages: 627-631
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Tristetraprolin inhibits HIV-1 production by binding to genomic RNA.2006
Author(s)
Maeda, M., Sawa, H., Tobiume, M., Tokunaga, K., Hasegawa, H., Ichinohe, T., Sata, T., Moriyama, M., Hall, W. W., Kurata, T., Takahashi, H.
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Journal Title
Microbes Infect 8
Pages: 2647-2656
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Inhibitory function of adapter-related protein complex 2 alpha 1 subunit in the process of nuclear translocation of human immunodeficiency virus type 1 genome.
Author(s)
Kitagawa, Y., Kameoka, M., Shoji-Kawata, S., Iwabu, Y., Mizuta, H., Tokunaga, K., Fujino, M., Natori, Y., Yura, Y. Ikuta, K.
-
Journal Title
Virology 373
Pages: 171-180
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Modulation of TNF-α-converting enzyme by the spike protein of SARS-CoV and ACE2 induces TNF-α production and facilitates viral entry.
Author(s)
Haga, S., Yamamoto, N., Nakai-Murakami, C., Osawa, Y., Tokunaga, K., Sata, T., Yamamoto, N., Sasazuki, T., Ishizaka, Y.
-
Journal Title
Proc. Natl. Acad. Sci. U.S.A 105
Pages: 7809-7814
Description
「研究成果報告書概要(欧文)」より
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[Presentation] HIV-1 Vpr Causes Aberrant Sister Chromatid Separation.2006
Author(s)
Shimura, M., Toyoda, Y., Kinomoto, M., Tachiwana, H., Tokunaga, K., Kurumizaka, H., Yoda, K., Yanagida, M., Sata, T., and Ishizaka, Y.
Organizer
第20回国際生化学・分子生物学会議
Place of Presentation
京都
Year and Date
20060600
Description
「研究成果報告書概要(和文)」より
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[Presentation] HIV-1 Vpr induces DA double-strand breaks.2006
Author(s)
Tachiwana, H., Nakai-Murakami, C., Hoshino, S., Shimura, M., Taguchi, T., Kurumizaka, H., Tokunaga, K., Sata, T., and Ishizaka, Y.
Organizer
Cold Spring Harbor Laboratory Meeting.
Place of Presentation
NY, USA.
Year and Date
20060523-28
Description
「研究成果報告書概要(和文)」より
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[Presentation] HIV-1 Vpr induces DA double-strand breaks.2006
Author(s)
Tachiwana, H., Nakai-Murakami, C., Hoshino, S., Shimura, M., Taguchi, T., Kurumizaka, H., Tokunaga, K., Sata, T., Ishizaka, Y.
Organizer
Cold Spring Harbor Laboratory Meeting.
Place of Presentation
NY, USA
Year and Date
20060523-28
Description
「研究成果報告書概要(欧文)」より
-