Identification and characterization of a highly efficient anti-HIV pol hammerhead ribozyme.
Identification and characterization of a highly efficient anti-HIV pol hammerhead ribozyme.
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高效抗 HIV pol 锤头核酶的鉴定和表征
DOI:
10.1089/oli.2008.0150
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
S. A. Klein
中科院分区:
文献类型:
--
作者:
T. Müller-Kuller;G. Capalbo;C. Klebba;J. W. Engels;S. A. Klein
The aim of this study was to identify and to characterize a highly active anti-HIV ribozyme. Therefore, the genome of HIV-1 IIIb was screened for not yet addressed GUC triplets within highly conserved sequences. Here we report thein vitrocharacteristics and the antiviral activity of the fittest identified anti-HIV hammerhead ribozyme, targeting the 13th GUC triplet within the HIV-1polgene (HHPol13). Multiple turnover kinetics were determinedin vitroand revealed very promising kinetic data:Vmax= 39 nM/minute,Km= 576 nM,kcat= 3.9/minute, andKcat/Km= 6.8/minute/μM. To analyze its antiviral activity the hammerhead ribozyme was expressed retrovirally in Hut78 cells followed by HIV-1 infection. The newly identified ribozyme conferred a long-term inhibition of HIV-1 replication until the end of the observation period at day 56. We were able to demonstrate that the antiviral activity was mainly due to a ribozyme effect combined with a limited antisense activity. Additionally, the effect of the identified ribozyme was compared with a retrovirally expressed siRNA directed against the same target in the HIV-1polgene. This siRNA (siPol13) showed no inhibition of HIV replication. In summary, the hammerhead ribozyme HHPol13 was demonstrated to confer superior cleavage and antiviral activity against HIV-1. These results suggest that even in the RNAi era ribozymes still have the potential as highly active antiviral agents.
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影响因子:
12.4
作者:
Li, MJ;Kim, J;Rossi, JJ
通讯作者:
Rossi, JJ
DOI:
10.1073/pnas.92.3.699
发表时间:
1995
影响因子:
11.1
作者:
Yu,M;Leavitt,MC;Maruyama,M;Yamada,O;Young,D;Ho,AD;Wong-Staal,F
通讯作者:
Wong-Staal,F
影响因子:
5.1
作者:
C. Rossi;P. Balboni;M. Betti;P. Marconi;R. Bozzini;M. Grossi;G. Barbanti‐Brodano;A. Caputo
通讯作者:
A. Caputo
影响因子:
--
作者:
P. Hendry;M. Mccall;T. Lockett
通讯作者:
T. Lockett
影响因子:
7.6
作者:
F. Dianzani;M. Capobianchi;G. Antonelli;P. Amicucci;F. Marco
通讯作者:
F. Marco