2008 Fiscal Year Final Research Report
Development of AIDS therapeutics targeting the HIV-Tat host cofactor P-TEFb
Project/Area Number |
19590116
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Drug development chemistry
|
Research Institution | National Institute of Infectious Diseases |
Principal Investigator |
FUKAZAWA Hidesuke National Institute of Infectious Diseases, 生物活性物質部, 室長 (10218878)
|
Project Period (FY) |
2007 – 2008
|
Keywords | HIV-1 / P-TEFb / Tat / Cyclin T / CDK9 / Cyclin K / BRD4 |
Research Abstract |
HIV-1 Tat及びTat の宿主cofactor P-TEFbを標的とした薬剤の研究を行った。Cyclin KはTat-responsive motifを欠くため、Tat/P-TEFb/TAR複合体形成を阻害する可能性がある。Cyclin K をHIV-1と293T細胞に発現させるとCyclin Kの発現量に応じてHIV-1産生は低下し、Cyclin Kはレンチウイルス複製の負の調節因子であることがわかった。またMT-4細胞をHIV-1耐性にするcDNA を探索し、BRD4 C末端領域(BRD4-CTD)を得た。BRD4-CTDはTat依存性のLTRからの転写を選択的に抑制した。以上はHIV-1複製がCyclin T1を含むP-TEFb に強く依存すること、またCyclin T1のBRD4結合領域が抗HIV薬の新規標的となることを示す。
|
Research Products
(3 results)
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[Journal Article] Identification of the P-TEFb complex-interacting domain of Brd4 as an inhibitor of HIV-1 replication by functional cDNA library screening in MT-4 cells.2008
Author(s)
Urano, E., Kariya, Y., Futahashi, Y., Ichikawa, R., Hamatake, M., Fukazawa, H., Morikawa, Y., Yoshida, T., Koyanagi, Y., Yamamoto, N., and Komano, J.
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Journal Title
FEBS Letters 582
Pages: 4053-4058
Peer Reviewed
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[Journal Article] Cyclin K/CPR4 inhibits primate lentiviral replication by inactivating Tat/P-TEFb-dependent LTR transcription.2008
Author(s)
Urano, E., Shimizu, S., Futahashi, Y., Hamatake, M., Morikawa, Y., Takahashi, N., Fukazawa, H., Yamamoto, N., and Komano, J.
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Journal Title
Peer Reviewed
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[Journal Article] Gamma-herpesviruses and cellular signaling in AIDS-associated malignancies.2007
Author(s)
Noguchi, K., Fukazawa, H., Murakami, Y., Takahashi, N., Yamagoe, S., and Uehara, Y.
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Journal Title
Cancer Science 98
Pages: 1288-1296
Peer Reviewed