Abstract
We constructed two monoribozymes and a diribozyme against the conserved region of the X RNA of hepatitis B virus (HBV). All the ribozymes (Rzs) possessed sequence-specific cleavage activities under standard and simulated physiologic conditions. Specific cleavage was also obtained when the same Rzs were placed in cis configuration with respect to X gene in multiple combinations. Rz-expressing cells were able to specifically interfere with the functional expression of X RNA and protein production in a liver-specific cell line HepG2. Potential applications of these novel Rzs are discussed.
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