AU757034B2 - Enzymatic nucleic acid treatment of diseases or conditions related to hepatitis C virus infection - Google Patents

Description

DESCRIPTION

Enzymatic Nucleic Acid Treatment Of Diseases Or Conditions Related To Hepatitis C Virus Infection Background Of The Invention This invention relates to methods and reagents for the treatment of diseases or conditions relating to the Hepatitis C virus infection.

The following is a discussion of relevant art, none of which is admitted to be prior art to the present invention.

In 1989, the HCV was determined to be an RNA virus and was identified as the o0 causative agent of most non-A non-B viral Hepatitis (Choo et al., Science. 1989; 244:359- 362). Unlike retroviruses such as HIV, HCV does not go though a DNA replication phase and no integrated forms of the viral genome into the host chromosome have been detected (Houghton et al., Hepatology 1991; 14:381-388). Rather, replication of the coding (plus) *11 strand is mediated by the production of a replicative (minus) strand leading to the generation of several copies of plus strand HCV RNA. The genome consists of a single, large, open-reading frame that is translated into a polyprotein (Kato et al., FEBS Letters.

1991; 280:325-328). This polyprotein subsequently undergoes post-translational cleavage, producing several viral proteins (Leinbach et al., Virology. 1994; 204:163-169).

Examination of the 9.5-kilobase genome of HCV has demonstrated that the viral nucleic acid can mutate at a high rate (Smith et al., Mol. Evol. 1997; 45:238-246). This rate of mutation has led to the evolution of several distinct genotypes of HCV that share approximately 70% sequence identity (Simmonds et al., J. Gen. Virol. 1994; 75:1053- 1061). It is important to note that these sequences are evolutionarily quite distant. For example, the genetic identity between humans and primates such as the chimpanzee is approximately 98%. In addition, it has been demonstrated that an HCV infection in an individual patient is composed of several distinct and evolving quasispecies that have 98% [I:\DayLib\LIBVV]02884.doc:sxc WO 99/55847 PCT/US99/09027 2 identity at the RNA level. Thus, the HCV genome is hypervariable and continuously changing. Although the HCV genome is hypervariable, there are 3 regions of the genome that are highly conserved. These conserved sequences occur in the 5' and 3' non-coding regions as well as the 5'-end of the core protein coding region and are thought to be vital for HCV RNA replication as well as translation of the HCV polyprotein. Thus, therapeutic agents that target these conserved HCV genomic regions may have a significant impact over a wide range of HCV genotypes. Moreover, it is unlikely that drug resistance will occur with ribozymes specific to conserved regions of the HCV genome.

In contrast, therapeutic modalities that target inhibition of enzymes such as the viral proteases or helicase are likely to result in the selection for drug resistant strains since the RNA for these viral encoded enzymes is located in the hypervariable portion of the HCV genome.

After initial exposure to HCV, the patient will experience a transient rise in liver enzymes, which indicates that inflammatory processes are occurring (Alter et al., IN: Seeff LB, Lewis JH, eds. Current Perspectives in Hepatology. New York: Plenum Medical Book Co; 1989:83-89). This elevation in liver enzymes will occur at least 4 weeks after the initial exposure and may last for up to two months (Farci et al., New England Journal of Medicine. 1991:325:98-104). Prior to the rise in liver enzymes, it is possible to detect HCV RNA in the patient's serum using RT-PCR analysis (Takahashi et al., American Journal of Gastroenterology. 1993:88:2:240-243). This stage of the disease is called the acute stage and usually goes undetected since 75% of patients with acute viral hepatitis from HCV infection are asymptomatic. The remaining 25% of these patients develop jaundice or other symptoms of hepatitis.

Acute HCV infection is a benign disease, however, and as many as 80% of acute HCV patients progress to chronic liver disease as evidenced by persistent elevation of serum alanine aminotransferase (ALT) levels and by continual presence of circulating HCV RNA (Sherlock, Lancet 1992; 339:802). The natural progression of chronic HCV infection over a 10 to 20 year period leads to cirrhosis in 20to50% of patients (Davis et al., Infectious Agents and Disease 1993;2:150:154) and progression of HCV infection to hepatocellular carcinoma has been well documented (Liang et al., Hepatology. 1993; 18:1326-1333; Tong et al., Western Journal of Medicine, 1994; Vol. 160, No. 2: 133-138).

There have been no studies that have determined sub-populations that are most likely to progress to cirrhosis and/or hepatocellular carcinoma, thus all patients have equal risk of progression.

It is important to note that the survival for patients diagnosed with hepatocellular carcinoma is only 0.9 to 12.8 months from initial diagnosis (Takahashi et al., American WO 99/55847 PCTIUS99/09027 3 Journal of Gastroenterology. 1993:88:2:240-243). Treatment of hepatocellular carcinoma with chemotherapeutic agents has not proven effective and only 10% of patients will benefit from surgery due to extensive tumor invasion of the liver (Trinchet et al., Presse Medicine. 1994:23:831-833). Given the aggressive nature of primary hepatocellular carcinoma, the only viable treatment alternative to surgery is liver transplantation (Pichlmayr et al., Hepatology. 1994:20:33S-40S).

Upon progression to cirrhosis, patients with chronic HCV infection present with clinical features, which are common to clinical cirrhosis regardless of the initial cause (D'Amico et al., Digestive Diseases and Sciences. 1986;31:5: 468-475). These clinical features may include: bleeding esophageal varices, ascites, jaundice, and encephalopathy (Zakim D, Boyer TD. Hepatology a textbook of liver disease. Second Edition Volume 1. 1990 W.B. Saunders Company. Philadelphia). In the early stages of cirrhosis, patients are classified as compensated meaning that although liver tissue damage has occurred, the patient's liver is still able to detoxify metabolites in the blood-stream. In addition, most patients with compensated liver disease are asymptomatic and the minority with symptoms report only minor symptoms such as dyspepsia and weakness. In the later stages of cirrhosis, patients are classified as decompensated meaning that their ability to detoxify metabolites in the bloodstream is diminished and it is at this stage that the clinical features described above will present.

In 1986, D'Amico et al. described the clinical manifestations and survival rates in 1155 patients with both alcoholic and viral associated cirrhosis (D'Amico supra). Of the 1155 patients, 435 had compensated disease although 70% were asymptomatic at the beginning of the study. The remaining 720 patients had decompensated liver disease with 78% presenting with a history of ascites, 31% with jaundice, 17% had bleeding and 16% had encephalopathy. Hepatocellular carcinoma was observed in six patients with compensated disease and in 30 patients with decompensated disease.

Over the course of six years, the patients with compensated cirrhosis developed clinical features of decompensated disease at a rate of 10% per year. In most cases, ascites was the first presentation of decompensation. In addition, hepatocellular carcinoma developed in 59 patients who initially presented with compensated disease by the end of the six-year study.

With respect to survival, the D'Amico study indicated that the five-year survival rate for all patients on the study was only 40%. The six-year survival rate for the patients who initially had compensated cirrhosis was 54% while the six-year survival rate for patients who initially presented with decompensated disease was only 21%. There were WO 99/55847 PCTIUS99/09027 4 no significant differences in the survival rates between the patients who had alcoholic cirrhosis and the patients with viral related cirrhosis. The major causes of death for the patients in the D'Amico study were liver failure in 49%; hepatocellular carcinoma in 22%; and, bleeding in 13% (D'Amico supra).

Chronic Hepatitis C is a slowly progressing inflammatory disease of the liver, mediated by a virus (HCV) that can lead to cirrhosis, liver failure and/or hepatocellular carcinoma over a period of 10 to 20 years. In the US, it is estimated that infection with HCV accounts for 50,000 new cases of acute hepatitis in the United States each year (NIH Consensus Development Conference Statement on Management of Hepatitis C March 1997). The prevalence of HCV in the United States is estimated at 1.8% and the CDC places the number of chronically infected Americans at approximately 4.5 million people.

The CDC also estimates that up to 10,000 deaths per year are caused by chronic HCV infection. The prevalence of HCV in the United States is estimated at 1.8% and the CDC places the number of chronically infected Americans at approximately 4.5 million people.

The CDC also estimates that up to 10,000 deaths per year are caused by chronic HCV infection.

Numerous well controlled clinical trials using interferon (IFN-alpha) in the treatment of chronic HCV infection have demonstrated that treatment three times a week results in lowering of serum ALT values in approximately 50% (range 40% to 70%) of patients by the end of 6 months of therapy (Davis et al., New England Journal of Medicine 1989; 321:1501-1506; Marcellin et al., Hepatology. 1991; 13:393-397; Tong et al., Hepatology 1997:26:747-754; Tong et al., Hepatology 1997 26(6): 1640-1645). However, following cessation of interferon treatment, approximately 50% of the responding patients relapsed, resulting in a "durable" response rate as assessed by normalization of serum ALT concentrations of approximately 20 to In recent years, direct measurement of the HCV RNA has become possible through use of either the branched-DNA or Reverse Transcriptase Polymerase Chain Reaction (RT-PCR) analysis. In general, the RT-PCR methodology is more sensitive and leads to more accurate assessment of the clinical course (Tong et al., supra). Studies that have examined six months of type 1 interferon therapy using changes in HCV RNA values as a clinical endpoint have demonstrated that up to 35% of patients will have a loss of HCV RNA by the end of therapy (Marcellin et al., supra). However, as with the ALT endpoint, about 50% of the patients relapse six months following cessation of therapy resulting in a durable virologic response of only 12% (Marcellin et al., supra). Studies that have examined 48 weeks of therapy have demonstrated that the sustained virological response is up to 25% (NIH consensus statement: 1997). Thus, standard of care for treatment of WO 99/55847 PCT/US99/09027 chronic HCV infection with type 1 interferon is now 48 weeks of therapy using changes in HCV RNA concentrations as the primary assessment of efficacy (Hoofnagle et al., New England Journal of Medicine 1997; 336(5) 347-356).

Side effects resulting from treatment with type 1 interferons can be divided into four general categories, which include 1. Influenza-like symptoms; 2. Neuropsychiatric; 3.

Laboratory abnormalities; and, 4. Miscellaneous (Dusheiko et al., Journal of Viral Hepatitis.

1994:1:3-5). Examples of influenza-like symptoms include; fatigue, fever; myalgia; malaise; appetite loss; tachycardia; rigors; headache and arthralgias. The influenza-like symptoms are usually short-lived and tend to abate after the first four weeks of dosing (Dushieko et al., supra). Neuropsychiatric side effects include: irritability, apathy; mood changes; insomnia; cognitive changes and depression. The most important of these neuropsychiatric side effects is depression and patients who have a history of depression should not be given type 1 interferon. Laboratory abnormalities include; reduction in myeloid cells including granulocytes, platelets and to a lesser extent red blood cells.

These changes in blood cell counts rarely lead to any significant clinical sequellae (Dushieko et al., supra). In addition, increases in triglyceride concentrations and elevations in serum alanine and aspartate aminotransferase concentration have been observed. Finally, thyroid abnormalities have been reported. These thyroid abnormalities are usually reversible after cessation of interferon therapy and can be controlled with appropriate medication while on therapy. Miscellaneous side effects include nausea; diarrhea; abdominal and back pain; pruritus; alopecia; and rhinorrhea. In general, most side effects will abate after 4 to 8 weeks of therapy (Dushieko et al., supra).

Welch et al., Gene Therapy 1996 3(11): 994-1001 describe in vitro an in vivo studies with two vector expressed hairpin ribozymes targeted against hepatitis C virus.

Sakamoto et al., J. Clinical Investigation 1996 98(12):2720-2728 describe intracellular cleavage of hepatitis C virus RNA and inhibition of viral protein translation by certain vector expressed hammerhead ribozymes.

Lieber et al., J. Virology 1996 70(12):8782-8791 describe elimination of hepatitis C virus RNA in infected human hepatocytes by adenovirus-mediated expression of certain hammerhead ribozymes.

Ohkawa et al., 1997, J. Hepatology, 27; 78-84, describe in vitro cleavage of HCV RNA and inhibition of viral protein translation using certain in vitro transcribed hammerhead ribozymes.

Barber et al., International PCT Publication No. WO 97/32018, describe the use of an adenovirus vector to express certain anti-hepatitis C virus hairpin ribozymes.

WO 99/55847 PCT/US99/09027 6 Kay et al., International PCT Publication No. WO 96/18419, describe certain recombinant adenovirus vectors to express anti-HCV hammerhead ribozyme.

Yamada et al., Japanese Patent Application No. JP 07231784 describe a specific poly-(L)-lysine conjugated hammerhead ribozyme targeted against HCV.

Draper, U.S. Patent No. 5,610,054, descibes enzymatic nucleic acid molecule capable of inhibiting replication of HCV.

Alt et al., Hepatology 1995 22(3): 707-717, describe specific inhibition of hepatitis C viral gene expression by certain antisense phosphorothioate oligodeoxynucleotides.

Summary Of The Invention This invention relates to ribozymes, or enzymatic nucleic acid molecules, directed to cleave RNA species of hepatitis C virus (HCV) and/or encoded by the HCV. In particular, applicant describes the selection and function of ribozymes capable of specifically cleaving HCV RNA. Such ribozymes may be used to treat diseases associated with HCV infection.

Due to the high sequence variability of the HCV genome, selection of ribozymes for broad therapeutic applications would likely involve the conserved regions of the HCV genome. Specifically, the present invention describes hammerhead ribozymes that would cleave in the conserved regions of the HCV genome. A list of the thirty hammerhead ribozymes derived from the conserved regions Non Coding Region (NCR), end of core protein coding region, and NCR) of the HCV genome is shown in Table IV. In general, Applicant has found that enzymatic nucleic acid molecules that cleave sites located in the 5' end of the HCV genome would block translation while ribozymes that cleave sites located in the 3' end of the genome would block RNA replication. Approximately 50 HCV isolates have been identified and a sequence alignment of these isolates from genotypes la, Ib, 2a, 2b, 2c, 3a, 3b, 4a, and 6 was performed. These alignments were used by the Applicant to identify hammerhead ribozymes sites within regions highly conserved between genotypes.

Twenty three ribozyme sites were identified in regions of greatest homology within the conserved region.. Therefore, one ribozyme can be designed to cleave all the different isolates of HCV. According to the Applicant, ribozymes designed against conserved regions of various HCV isolates will enable efficient inhibition of HCV replication in diverse patient populations and may ensure the effectiveness of the ribozymes against HCV quasispecies which evolve due to mutations in the non-conserved regions of the HCV genome.

WO 99/55847 PCTIUS99/09027 7 By "inhibit" is meant that the activity of HCV or level of RNAs encoded by HCV genome is reduced below that observed in the absence of the nucleic acid, particularly, inhibition with ribozymes preferably is below that level observed in the presence of an inactive RNA molecule able to bind to the same site on the mRNA, but unable to cleave that RNA.

By "enzymatic nucleic acid" it is meant a nucleic acid molecule capable of catalyzing reactions including, but not limited to, site-specific cleavage and/or ligation of other nucleic acid molecules, cleavage of peptide and amide bonds, and trans-splicing.

Such a molecule with endonuclease activity may have complementarity in a substrate binding region to a specified gene target, and also has an enzymatic activity that specifically cleaves RNA or DNA in that target. That is, the nucleic acid molecule with endonuclease activity is able to intramolecularly or intermolecularly cleave RNA or DNA and thereby inactivate a target RNA or DNA molecule. This complementarity functions to allow sufficient hybridization of the enzymatic RNA molecule to the target RNA or DNA to allow the cleavage to occur. 100% complementarity is preferred, but complementarity as low as 50-75% may also be useful in this invention. The nucleic acids may be modified at the base, sugar, and/or phosphate groups. The term enzymatic nucleic acid is used interchangeably with phrases such as ribozymes, catalytic RNA, enzymatic RNA, catalytic DNA, catalytic oligonucleotides, nucleozyme, DNAzyme, RNA enzyme, endoribonuclease, endonuclease, minizyme, leadzyme, oligozyme or DNA enzyme. All of these terminologies describe nucleic acid molecules with enzymatic activity. The specific enzymatic nucleic acid molecules described in the instant application are not limiting in the invention and those skilled in the art will recognize that all that is important in an enzymatic nucleic acid molecule of this invention is that it has a specific substrate binding site which is complementary to one or more of the target nucleic acid regions, and that it have nucleotide sequences within or surrounding that substrate binding site which impart a nucleic acid cleaving activity to the molecule.

By "enzymatic portion" or "catalytic domain" is meant that portion/region of the ribozyme essential for cleavage of a nucleic acid substrate (for example see Figure 1).

By "substrate binding arm" or "substrate binding domain" is meant that portion/region of a ribozyme which is complementary to able to base-pair with) a portion of its substrate. Generally, such complementarity is 100%, but can be less if desired. For example, as few as 10 bases out of 14 may be base-paired. Such arms are shown generally in Figure 1 and 3. That is, these arms contain sequences within a ribozyme which are intended to bring ribozyme and target RNA together through complementary base-pairing interactions. The ribozyme of the invention may have binding 8 arms that are contiguous or non-contiguous and may be of varying lengths. The length of the binding arm(s) are preferably greater than or equal to four nucleotides; specifically 12-100 nucleotides; more specifically 14-24 nucleotides long. If two binding arms are chosen, the design is such that the length of the binding arms are symmetrical each of the binding arms is of the same length; five and five nucleotides, six and six nucleotides or seven and seven nucleotides long) or asymmetrical the binding arms are of different length; six and three nucleotides; three and six nucleotides long; four and five nucleotides long; four and six nucleotides long; four and seven nucleotides long; and the like).

According to a first embodiment of the present invention there is provided a compound having the following formula: 3' iH c c a g g A a gs a s a s cc a c *a u G G c,

A

a 9 g g a G u

C

U 9 u wherein A and G represent adenosine and guanosine ribonucleotides, respectively; a, u, g, and c represent 2'-O-methyl modified adenosine, 2'-O-methyl modified S 15 uridine, 2'-O-methyl modified guanosine, 2'-O-methyl modified cytidine nucleotides, respectively; u represents a 2'-C-allyl modified uridine nucleotide; s represents a phosphorothioate linkage; and iH represents inverted abasic moiety.

According to a second embodiment of the present invention there is provided an isolated mammalian cell comprising the compound of the first embodiment.

According to a third embodiment of the present invention there is provided a method of administering to a cell a compound of the first embodiment comprising contacting said cell with the compound under conditions suitable for said administration.

According to a fourth embodiment of the present invention there is provided a composition comprising the compound according to the first embodiment and a S pharmaceutically acceptable carrier or diluent.

[I\DayLib\L1BVV]02884.doc:sxc According to a fifth embodiment of the present invention there is provided use of a compound according to the first embodiment or a composition according to the fourth embodiment for the manufacture of a medicament.

According to a sixth embodiment of the present invention there is provided a method for treating a disease or disorder related to HCV infection, wherein the method comprises administering to the subject an effective amount of a compound according to the first embodiment or a composition according to the fourth embodiment.

As disclosed herein, an enzymatic nucleic acid molecule of the present invention may be formed in a hammerhead or hairpin motif, but may also be formed in the motif of a hepatitis d virus, group I intron, group II intron or RNaseP RNA (in association with an RNA guide sequence) or Neurospora VS RNA. Examples of such hammerhead motifs are described by Dreyfus, supra, Rossi et al., 1992, AIDS Research and Human Retroviruses 8, 183; of hairpin motifs by Hampel et al., EPO360257, Hampel and Tritz, 1989 Biochemistry 28, 4929, Feldstein et al., 1989, Gene 82, 53, Haseloff and Gerlach, 1989, Gene, 82, 43, and Hampel et al., 1990 Nucleic Acids Res. 18, 299; of the hepatitis d virus motif is described by Perrotta and Been, 1992 Biochemistry 31, 16; of the RNaseP motif by Guerrier-Takada et al., 1983 Cell 35, 849; Forster and Altman, 1990, Science 249, 783; Li and Altman, 1996, Nucleic Acids Res. 24, 835; Neurospora VS RNA ribozyme motif is described by Collins (Saville and Collins, 1990 Cell 61, 685-696; Saville and Collins, 1991 Proc. Natl. Acad Sci. USA 88, 8826-8830; Collins and Olive, 1993 Biochemistry 32, 2795-2799; Guo and Collins, 1995, EMBO. J. 14, 363); Group II introns are described by Griffin et al., 1995, Chem. Biol. 2, 761; Michels and Pyle, 1995, Biochemistry 34, 2965; Pyle et al., International PCT Publication No. WO 96/22689; of the Group I intron by Cech et al., U.S. Patent 4,987,071; and of DNAzyme motif by Chartrand et al., 1995, Nucleic Acids Research 23, 4092; Santoro et al., 1997, PNAS 94, 4262. These specific motifs are not limiting in the invention and those skilled in the art will recognize that all that is important in an enzymatic nucleic acid molecule of this invention is that it has a specific substrate binding site which is complementary to one or more of the target gene RNA regions, and that it have nucleotide sequences within or surrounding that substrate binding site which impart an RNA cleaving activity to the molecule.

By "equivalent" RNA to HCV is meant to include those naturally occurring RNA r molecules associated with HCV infection in various animals, including human, rodent, mate, rabbit and pig. The equivalent RNA sequence also includes in addition to the [I:\DayLib\LIBVV]02884.doc:sxc coding region, regions such as 5'-untranslated region, 3'-untranslated region, introns, intron-exon junction and the like.

By "complementarity" is meant a nucleic acid that can form hydrogen bond(s) with another RNA sequence by either traditional Watson-Crick or other non-traditional types (for example, Hoogsteen type) of base-paired interactions.

Also disclosed herein is a method for producing a class of enzymatic cleaving agents which exhibit a high degree of specificity for the RNA of a desired target. The enzymatic nucleic acid molecule is preferably targeted to a highly conserved sequence region of a target mRNAs encoding HCV proteins such that specific treatment of a 0o disease or condition can be provided with either one or several enzymatic nucleic acids.

Such enzymatic nucleic acid molecules can be delivered exogenously to specific cells as required. Alternatively, the ribozymes can be expressed from DNA/RNA vectors that are delivered to specific cells.

Such ribozymes are useful for the prevention of the diseases and conditions discussed above, and any other diseases or conditions that are related to the levels of HCV activity in a cell or tissue.

By "related" is meant that the inhibition of HCV RNAs and thus reduction in the level respective viral activity will relieve to some extent the symptoms of the disease or condition.

In embodiments disclosed herein, ribozymes have binding arms which are Scomplementary to the target sequences in Tables IV-IX. Examples of such ribozymes are also shown in Tables IV-IX. Examples of such ribozymes consist essentially of sequences defined in these Tables. Other sequences may be present which do not interfere with such cleavage.

By "consists essentially of" is meant that the active ribozyme contains an enzymatic center or core equivalent to those in the examples, and binding arms able to bind mRNA such that cleavage at the target site occurs. Other sequences may be present which do not interfere with such cleavage.

Disclosed herein are ribozymes that inhibit gene expression and/or viral replication.

These chemically or enzymatically synthesized RNA molecules contain substrate binding domains that bind to accessible regions of their target mRNAs. The RNA molecules also contain domains that catalyze the cleavage of RNA. The RNA molecules are preferably /ozymes of the hammerhead or hairpin motif. Upon binding, the ribozymes cleave the [1:\DayLib\LIBVV]02884.doc:sxc target mRNAs, preventing translation and protein accumulation. In the absence of the expression of the target gene, HCV gene expression and/or replication is inhibited.

As disclosed herein, ribozymes are added directly, or can be complexed with cationic lipids, packaged within liposomes, or otherwise delivered to target cells. The nucleic acid or nucleic acid complexes can be locally administered to relevant tissues ex vivo, or in vivo through injection, infusion pump or stent, with or without their incorporation in biopolymers. In another preferred embodiment, the ribozyme is administered to the site of HCV activity hepatocytes) in an appropriate liposomal vehicle.

Also disclosed herein are ribozymes that cleave target molecules and inhibit HCV activity and are expressed from transcription units inserted into DNA or RNA vectors.

The recombinant vectors are preferably DNA plasmids or viral vectors. Ribozyme expressing viral vectors could be constructed based on, but not limited to, adeno- 5 associated virus, retrovirus, adenovirus, or alphavirus. Preferably, the recombinant vectors capable of expressing the ribozymes are delivered as described above, and persist in target cells. Alternatively, viral vectors may be used that provide for transient expression of ribozymes. Such vectors might be repeatedly administered as necessary.

Once expressed, the ribozymes cleave the target mRNA. Delivery of ribozyme expressing vectors could be systemic, such as by intravenous or intramuscular administration, by administration to target cells ex-planted from the patient followed by reintroduction into the patient, or by any other means that would allow for introduction into the desired target cell (for a review see Couture and Stinchcomb, 1996, TIG., 12, 510). Also disclosed herein are ribozymes that cleave target molecules and inhibit viral replication and are expressed from transcription units inserted into DNA, RNA, or viral vectors. Preferably, the recombinant vectors capable of expressing the ribozymes are locally delivered as described above, and transiently persist in smooth muscle cells.

However, other mammalian cell vectors that direct the expression of RNA may be used for this purpose.

By "patient" is meant an organism which is a donor or recipient of explanted cells or the cells themselves. "Patient" also refers to an organism to which enzymatic nucleic acid molecules can be administered. Preferably, a patient is a mammal or mammalian cells. More preferably, a patient is a human or human cells.

SBy "vectors" is meant any nucleic acid- and/or viral-based technique used to deliver desired nucleic acid.

[I:\DayLib\LIBVV]02884.doc:sxc These ribozymes, individually, or in combination or in conjunction with other drugs, can be used to treat diseases or conditions discussed above. For example, to treat a disease or condition associated with HCV levels, the patient may be treated, or other appropriate cells may be treated, as is evident to those skilled in the art.

a

S.

000 0

S

*9o *e **0 [I:\DayLib\LIBVV]02884.doc:sxc WO 99/55847 PCTIUS99/09027 11 Other features and advantages of the invention will be apparent from the following description of the preferred embodiments thereof, and from the claims.

Description Of The Preferred Embodiments The drawings will first briefly be described.

Drawings: Figure 1 shows the secondary structure model for seven different classes of enzymatic nucleic acid molecules. Arrow indicates the site of cleavage. indicate the target sequence. Lines interspersed with dots are meant to indicate tertiary interactions.

is meant to indicate base-paired interaction. Group I Intron: P1-P9.0 represent various stem-loop structures (Cech et al., 1994, Nature Struc. Bio., 1, 273). RNase P (M1RNA): EGS represents external guide sequence (Forster et al., 1990, Science, 249, 783; Pace et al., 1990, J. Biol. Chem., 265, 3587). Group II Intron: 5'SS means 5' splice site; 3'SS means 3'-splice site; IBS means intron binding site; EBS means exon binding site (Pyle et al., 1994, Biochemistry, 33, 2716). VS RNA: I-VI are meant to indicate six stem-loop structures; shaded regions are meant to indicate tertiary interaction (Collins, International PCT Publication No. WO 96/19577). HDV Ribozyme: I-IV are meant to indicate four stem-loop structures (Been et al., US Patent No. 5,625,047). Hammerhead Ribozyme: I-III are meant to indicate three stem-loop structures; stems I-III can be of any length and may be symmetrical or asymmetrical (Usman et al., 1996, Curr. Op. Struct. Bio., 1, 527).

Hairpin Ribozyme: Helix 1, 4 and 5 can be of any length; Helix 2 is between 3 and 8 base-pairs long; Y is a pyrimidine; Helix 2 (H2) is provided with a least 4 base pairs n is 1, 2, 3 or 4) and helix 5 can be optionally provided of length 2 or more bases (preferably 3 20 bases, m is from 1 20 or more). Helix 2 and helix 5 may be covalently linked by one or more bases r is 1 base). Helix 1, 4 or 5 may also be extended by 2 or more base pairs 4 20 base pairs) to stabilize the ribozyme structure, and preferably is a protein binding site. In each instance, each N and N' independently is any normal or modified base and each dash represents a potential basepairing interaction. These nucleotides may be modified at the sugar, base or phosphate.

Complete base-pairing is not required in the helices, but is preferred. Helix 1 and 4 can be of any size o and p is each independently from 0 to any number, 20) as long as some base-pairing is maintained. Essential bases are shown as specific bases in the structure, but those in the art will recognize that one or more may be modified chemically (abasic, base, sugar and/or phosphate modifications) or replaced with another base without significant effect. Helix 4 can be formed from two separate molecules, without a WO 99/55847 PCTIUS99/09027 12 connecting loop. The connecting loop when present may be a ribonucleotide with or without modifications to its base, sugar or phosphate. is 2 bases. The connecting loop can also be replaced with a non-nucleotide linker molecule. H refers to bases A, U, or C. Y refers to pyrimidine bases. refers to a covalent bond. (Burke et al., 1996, Nucleic Acids Mol. Biol., 10, 129; Chowrira et al., US Patent No. 5,631,359).

Figure 2 is a graph displaying the ability of ribozymes targeting various sites within the conserved 5' HCV UTR region to cleave the transcripts made from several genotypes.

Figure 3 is a schematic representation of the Dual Reporter System utilized to demonstrate ribozyme mediated reduction of luciferase activity in cell culture.

Figure 4 is a graph demonstrating the ability of ribozymes to reduce luciferase activity in OST-7 cells.

Figure 5 is a graph demonstrating the ability of ribozymes targeting sites 313 and HCV.5-318, to reduce luciferase activity in OST-7 cells compared to their inactive controls.

Figure 6A is a bar graph demonstrating the effect of ribozyme treatment on HCV- Polio virus (PV) replication. HeLa cells in 96-well plates were infected with HCV-PV at a multiplicity of infection (MOI) of 0.1. Virus inoculum was then replaced with media containing 5% serum and ribozyme or control (200nM), as indicated, complexed to a cationic lipid. After 24 hour cells were lysed 3 times by freeze/thaw and virus was quantified by plaque assay. Scrambled control (SAC), binding control (BAC), 3 P=S ribozymes, and 4 P=S ribozymes are indicated. Plaque forming units (pfu)/ml are shown as the mean of triplicate samples standard deviation Figure 6B is a bar graph demonstrating the effect of ribozyme treatment on wild type PV replication. HeLa cells in 96-well plates were infected with wild type PV at an MOI 0.05 for 30 minutes. All ribozymes contained 4P=S in Plaque forming units (pfu)/ml are shown as the mean of triplicate samples standard deviation Figure 7 is a schematic representation of various hammerhead ribozyme constructs targeted against HCV RNA.

Figure 8 is a graph demonstrating the effect of site 183 ribozyme treatment on a single round of HCV-PV infection. HeLa cells were infected with HCV-PV at an MOI for 30 minutes prior to treatment with ribozymes or control. Cells were lysed after 6, 7, or 8 hours and virus was quantified by plaque assay. Ribozyme binding arm/stem II formats 7/3, 6/4, 6/3) and scrambled control (SAC, 7/4 format) are indicated. All contained 4P=S stabilization. Results in pfu/ml are shown as the median of duplicate samples range.

WO 99/55847 PCT/US99/09027 13 Figure 9 shows the secondary structure models of three ribozyme motifs described in this application.

Figure 10 shows the activity of anti-HCV ribozymes in combination with Interferon. Results in pfu/ml are shown as the median of duplicate samples range. BAC, binding attenuated control molecule; IF, interferon; Rz, hammerhead ribozyme targeted to HCV site 183; pfu, plaque forming unit.

Ribozvmes Seven basic varieties of naturally-occurring enzymatic RNAs are known presently.

In addition, several in vitro selection (evolution) strategies (Orgel, 1979, Proc. R. Soc.

London, B 205, 435) have been used to evolve new nucleic acid catalysts capable of catalyzing cleavage and ligation of phosphodiester linkages (Joyce, 1989, Gene, 82, 83-87; Beaudry et al., 1992, Science 257, 635-641; Joyce, 1992, Scientific American 267, 90-97; Breaker et al., 1994, TIBTECH 12, 268; Bartel et a.,1993, Science 261:1411-1418; Szostak, 1993, TIBS 17, 89-93; Kumar et al., 1995, FASEB 9, 1183; Breaker, 1996, Curr. Op. Biotech., 7, 442; Santoro et al., 1997, Proc. Natl. Acad. Sci., 94, 4262; Tang et al., 1997, RNA 3, 914; Nakamaye Eckstein, 1994, supra; Long &Uhlenbeck, 1994, supra; Ishizaka et al., 1995, supra; Vaish et al., 1997, Biochemistry 36, 6495; all of these are incorporated by reference herein). Each can catalyze a series of reactions including the hydrolysis of phosphodiester bonds in trans (and thus can cleave other RNA molecules) under physiological conditions. Table I summarizes some of the characteristics of some of these ribozymes. In general, enzymatic nucleic acids act by first binding to a target RNA.

Such binding occurs through the target binding portion of an enzymatic nucleic acid which is held in close proximity to an enzymatic portion of the molecule that acts to cleave the target RNA. Thus, the enzymatic nucleic acid first recognizes and then binds a target RNA through complementary base-pairing, and once bound to the correct site, acts enzymatically to cut the target RNA. Strategic cleavage of such a target RNA will destroy its ability to direct synthesis of an encoded protein. After an enzymatic nucleic acid has bound and cleaved its RNA target, it is released from that RNA to search for another target and can repeatedly bind and cleave new targets.

The enzymatic nature of a ribozyme is advantageous over other technologies, since the concentration of ribozyme necessary to affect a therapeutic treatment is lower. This advantage reflects the ability of the ribozyme to act enzymatically. Thus, a single ribozyme molecule is able to cleave many molecules of target RNA. In addition, the ribozyme is a highly specific inhibitor, with the specificity of inhibition depending not only on the base-pairing mechanism of binding to the target RNA, but also on the WO 99/55847 PCTIUS99/09027 14 mechanism of target RNA cleavage. Single mismatches, or base-substitutions, near the site of cleavage can be chosen to completely eliminate catalytic activity of a ribozyme.

Nucleic acid molecules having an endonuclease enzymatic activity are able to repeatedly cleave other separate RNA molecules in a nucleotide base sequence-specific manner. Such enzymatic nucleic acid molecules can be targeted to virtually any RNA transcript, and efficient cleavage achieved in vitro (Zaug et al., 324, Nature 429 1986 Uhlenbeck, 1987 Nature 328, 596; Kim et al., 84 Proc. Natl. Acad. Sci. USA 8788, 1987; Dreyfus, 1988, Einstein Quart. J. Bio. Med., 6, 92; Haseloff and Gerlach, 334 Nature 585, 1988; Cech, 260 JAMA 3030, 1988; and Jefferies et al., 17 Nucleic Acids Research 1371, 1989; Chartrand et al., 1995, Nucleic Acids Research 23, 4092; Santoro et al., 1997, PNAS 94, 4262).

Because of their sequence-specificity, trans-cleaving ribozymes show promise as therapeutic agents for human disease (Usman McSwiggen, 1995 Ann. Rep. Med. Chem.

285-294; Christoffersen and Marr, 1995 J. Med. Chem. 38, 2023-2037). Ribozymes can be designed to cleave specific RNA targets within the background of cellular RNA.

Such a cleavage event renders the RNA non-functional and abrogates protein expression from that RNA. In this manner, synthesis of a protein associated with a disease state can be selectively inhibited.

Ribozymes that cleave the specified sites in HCV RNAs represent a novel therapeutic approach to infection by the hepatitis C virus. Applicant indicates that ribozymes are able to inhibit the activity of HCV and that the catalytic activity of the ribozymes is required for their inhibitory effect. Those of ordinary skill in the art will find that it is clear from the examples described that other ribozymes that cleave HCV RNAs may be readily designed and are within the invention.

Target sites Targets for useful ribozymes can be determined as disclosed in Draper et al., WO 93/23569; Sullivan et al., WO 93/23057; Thompson et al., WO 94/02595; Draper et al., WO 95/04818; McSwiggen et al., US Patent No. 5,525,468 and hereby incorporated by reference herein in totality. Rather than repeat the guidance provided in those documents here, below are provided specific examples of such methods, not limiting to those in the art. Ribozymes to such targets are designed as described in those applications and synthesized to be tested in vitro and in vivo, as also described. Such ribozymes can also be optimized and delivered as described therein.

The sequence of HCV RNAs were screened for optimal ribozyme target sites using a computer folding algorithm. Hammerhead or hairpin ribozyme cleavage sites were WO 99/55847 PCTIUS99/09027 identified. These sites are shown in Tables IV-VIII (All sequences are 5' to 3' in the tables). The nucleotide base position is noted in the Tables as that site to be cleaved by the designated type of ribozyme. The nucleotide base position is noted in the Tables as that site to be cleaved by the designated type of ribozyme.

Because HCV RNAs are highly homologous in certain regions, some ribozyme target sites are also homologous (see Table IV and VIII). In this case, a single ribozyme will target different classes of HCV RNA. The advantage of one ribozyme that targets several classes of HCV RNA is clear, especially in cases where one or more of these RNAs may contribute to the disease state.

Hammerhead or hairpin ribozymes were designed that could bind and were individually analyzed by computer folding (Jaeger et al., 1989 Proc. Natl. Acad. Sci. USA, 86, 7706) to assess whether the ribozyme sequences fold into the appropriate secondary structure. Those ribozymes with unfavorable intramolecular interactions between the binding arms and the catalytic core are eliminated from consideration. Varying binding arm lengths can be chosen to optimize activity. Generally, at least 5 bases on each arm are able to bind to, or otherwise interact with, the target RNA. Ribozymes of the hammerhead or hairpin motif were designed to anneal to various sites in the mRNA message. The binding arms are complementary to the target site sequences described above.

Ribozyme Synthesis Synthesis of nucleic acids greater than 100 nucleotides in length is difficult using automated methods, and the therapeutic cost of such molecules is prohibitive. In this invention, small nucleic acid motifs hammerhead or the hairpin ribozymes) are used for exogenous delivery. The simple structure of these molecules increases the ability of the nucleic acid to invade targeted regions of the mRNA structure. However, these nucleic acid molecules can also be expressed within cells from eukaryotic promoters Izant and Weintraub, 1985 Science 229, 345; McGarry and Lindquist, 1986 Proc. Natl.

Acad. Sci. USA 83, 399; SullengerScanlon et al., 1991, Proc. Natl. Acad. Sci. USA, 88, 10591-5; Kashani-Sabet et al., 1992 Antisense Res. Dev., 2, 3-15; Dropulic et al., 1992 J.

Virol, 66, 1432-41; Weerasinghe et al., 1991 J. Virol, 65, 5531-4; Ojwang et al., 1992 Proc. Natl. Acad. Sci. USA 89, 10802-6; Chen et al., 1992 Nucleic Acids Res., 20, 4581- 9; Sarver et al., 1990 Science 247, 1222-1225; Thompson et al., 1995 Nucleic Acids Res.

23, 2259). Those skilled in the art realize that any nucleic acid can be expressed in eukaryotic cells from the appropriate DNA/RNA vector. The activity of such nucleic acids can be augmented by their release from the primary transcript by a ribozyme (Draper et al., PCT W093/23569, and Sullivan et al., PCT W094/02595, both hereby incorporated WO 99/55847 PCT/US99/09027 16 in their totality by reference herein; Ohkawa et al., 1992 Nucleic Acids Symp. Ser., 27, 6; Taira et al., 1991, Nucleic Acids Res., 19, 5125-30; Ventura et al., 1993 Nucleic Acids Res., 21, 3249-55; Chowrira et al., 1994 J. Biol. Chem. 269, 25856).

The ribozymes in the examples were chemically synthesized. The method of synthesis used follows the procedure for normal RNA synthesis as described in Usman et al., 1987 J. Am. Chem. Soc., 109, 7845; Scaringe et al., 1990 Nucleic Acids Res., 18, 5433; and Wincott et al., 1995 Nucleic Acids Res. 23, 2677-2684 and makes use of common nucleic acid protecting and coupling groups, such as dimethoxytrityl at the end, and phosphoramidites at the 3'-end. Small scale synthesis were conducted on a 394 Applied Biosystems, Inc. synthesizer using a modified 2.5 lmol scale protocol with a min coupling step for alkylsilyl protected nucleotides and 2.5 min coupling step for 2'-Omethylated nucleotides. Table II outlines the amounts, and the contact times, of the reagents used in the synthesis cycle. A 6.5-fold excess (163 pL of 0.1 M 16.3 pmol) of phosphoramidite and a 24-fold excess of S-ethyl tetrazole (238 uLL of 0.25 M 59.5 pmol) relative to polymer-bound 5'-hydroxyl was used in each coupling cycle. Average coupling yields on the 394 Applied Biosystems, Inc. synthesizer, determined by colorimetric quantitation of the trityl fractions, were 97.5-99%. Other oligonucleotide synthesis reagents for the 394 Applied Biosystems, Inc. synthesizer detritylation solution was 2% TCA in methylene chloride (ABI); capping was performed with 16% N-methyl imidazole in THF (ABI) and 10% acetic anhydride/10% 2,6-lutidine in THF (ABI); oxidation solution was 16.9 mM 12, 49 mM pyridine, 9% water in THF (Millipore). B J Synthesis Grade acetonitrile was used directly from the reagent bottle. S-Ethyl tetrazole solution (0.25 M in acetonitrile) was made up from the solid obtained from American International Chemical, Inc.

Deprotection of the RNA was performed as follows. The polymer-bound oligoribonucleotide, trityl-off, was transferred from the synthesis column to a 4mL glass screw top vial and suspended in a solution of methylamine (MA) at 65 °C for 10 min.

After cooling to -20 oC, the supernatant was removed from the polymer support. The support was washed three times with 1.0 mL of EtOH:MeCN:H 2 0/3:1:1, vortexed and the supernatant was then added to the first supernatant. The combined supernatants, containing the oligoribonucleotide, were dried to a white powder.

The base-deprotected oligoribonucleotide was resuspended in anhydrous TEA-HF/NMP solution (250 L of a solution of 1.5mL N-methylpyrrolidinone, 750 uL TEA and 1.0 mL TEA-3HF to provide a 1.4M HF concentration) and heated to 65 0 C for 1.5 h. The resulting, fully deprotected, oligomer was quenched with 50 mM TEAB (9 mL) prior to anion exchange desalting.

WO 99/55847 PCT/US99/09027 17 For anion exchange desalting of the deprotected oligomer, the TEAB solution was loaded onto a Qiagen 500® anion exchange cartridge (Qiagen Inc.) that was prewashed with 50 mM TEAB (10 mL). After washing the loaded cartridge with 50 mM TEAB mL), the RNA was eluted with 2 M TEAB (10 mL) and dried down to a white powder.

Inactive hammerhead ribozymes were synthesized by substituting switching the order of GsA 6 and substituting a U for A 1 4 (numbering from Hertel, K. et al., 1992, Nucleic Acids Res., 20, 3252). Inactive ribozymes were may also by synthesized by substituting a U for G5 and a U for A14. In some cases, the sequence of the substrate binding arms were randomized while the overall base composition was maintained.

The average stepwise coupling yields were >98% (Wincott et al., 1995 Nucleic Acids Res. 23, 2677-2684).

Hairpin ribozymes are synthesized in two parts and annealed to reconstruct the active ribozyme (Chowrira and Burke, 1992 Nucleic Acids Res., 20, 2835-2840).

Ribozymes are also synthesized from DNA templates using bacteriophage T7 RNA polymerase (Milligan and Uhlenbeck, 1989, Methods Enzymol. 180, 51).

Ribozymes are modified to enhance stability and/or enhance catalytic activity by modification with nuclease resistant groups, for example, 2'-amino, 2'-C-allyl, 2'-flouro, 2'-O-methyl, nucleotide base modifications (for a review see Usman and Cedergren, 1992 TIBS 17, 34; Usman et al., 1994 Nucleic Acids Symp. Ser. 31, 163; Burgin et al., 1996 Biochemistry 6, 14090).

Ribozymes were purified by gel electrophoresis using general methods or are purified by high pressure liquid chromatography (HPLC; See Stinchcomb et al., International PCT Publication No. WO 95/23225, the totality of which is hereby incorporated herein by reference) and are resuspended in water.

The sequences of the ribozymes that are chemically synthesized, useful in this study, are shown in Tables IV-IX. Those in the art will recognize that these sequences are representative only of many more such sequences where the enzymatic portion of the ribozyme (all but the binding arms) is altered to affect activity. For example, stem-loop II sequence of hammerhead ribozymes can be altered (substitution, deletion, and/or insertion) to contain any sequences provided a minimum of two base-paired stem structure can form. Similarly, stem-loop IV sequence of hairpin ribozymes, can be altered (substitution, deletion, and/or insertion) to contain any sequence, provided a minimum of two base-paired stem structure can form. Preferably, no more than 200 bases are inserted at these locations. The sequences listed in Tables IV-IX may be formed of ribonucleotides or other nucleotides or non-nucleotides. Such ribozymes (which have enzymatic activity) are equivalent to the ribozymes described specifically in the Tables.

WO 99/55847 PCT/US99/09027 18 Optimizing Ribozvme Activity Catalytic activity of the ribozymes described in the instant invention can be optimized as described by Draper et al., supra. The details will not be repeated here, but include altering the length of the ribozyme binding arms, or chemically synthesizing ribozymes with modifications (base, sugar and/or phosphate) that prevent their degradation by serum ribonucleases and/or enhance their enzymatic activity (see e.g., Eckstein et al., International Publication No. WO 92/07065; Perrault et al., 1990 Nature 344, 565; Pieken et al., 1991 Science 253, 314; Usman and Cedergren, 1992 Trends in Biochem. Sci. 17, 334; Usman et al., International Publication No. WO 93/15187; and Rossi et al., International Publication No. WO 91/03162; Sproat, US Patent No.

5,334,711; and Burgin et al., supra; all of these describe various chemical modifications that can be made to the base, phosphate and/or sugar moieties of enzymatic RNA molecules). Modifications which enhance their efficacy in cells, and removal of bases from stem loop structures to shorten RNA synthesis times and reduce chemical requirements are desired. (All these publications are hereby incorporated by reference herein).

There are several examples in the art describing sugar and phosphate modifications that can be introduced into enzymatic nucleic acid molecules without significantly effecting catalysis and with significant enhancement in their nuclease stability and efficacy. Ribozymes are modified to enhance stability and/or enhance catalytic activity by modification with nuclease resistant groups, for example, 2'-amino, 2'-C-allyl, 2'-flouro, 2'-O-methyl, nucleotide base modifications (for a review see Usman and Cedergren, 1992 TIBS 17, 34; Usman et al., 1994 Nucleic Acids Symp. Ser. 31, 163; Burgin et al., 1996 Biochemistry 35, 14090). Sugar modification of enzymatic nucleic acid molecules have been extensively described in the art (see Eckstein et.al., International Publication PCT No. WO 92/07065; Perrault et al. Nature 1990, 344, 565-568; Pieken et al. Science 1991, 253, 314-317; Usman and Cedergren, Trends in Biochem. Sci 1992, 17, 334-339; Usman et al. International Publication PCT No. WO 93/15187; Sproat, US Patent No.

5,334,711 and Beigelman et al., 1995 J. Biol. Chem. 270, 25702; all of the references are hereby incorporated in their totality by reference herein). Such publications describe general methods and strategies to determine the location of incorporation of sugar, base and/or phosphate modifications and the like into ribozymes without inhibiting catalysis, and are incorporated by reference herein. In view of such teachings, similar modifications can be used as described herein to modify the nucleic acid catalysts of the instant invention.

WO 99/55847 PCT/US99/09027 19 Nucleic acid catalysts having chemical modifications which maintain or enhance enzymatic activity are provided. Such nucleic acid is also generally more resistant to nucleases than unmodified nucleic acid. Thus, in a cell and/or in vivo the activity may not be significantly lowered. As exemplified herein such ribozymes are useful in a cell and/or in vivo even if activity over all is reduced 10 fold (Burgin et al., 1996, Biochemistry, 14090). Such ribozymes herein are said to "maintain" the enzymatic activity on all RNA ribozyme.

Therapeutic ribozymes delivered exogenously must optimally be stable within cells until translation of the target RNA has been inhibited long enough to reduce the levels of the undesirable protein. This period of time varies between hours to days depending upon the disease state. Clearly, ribozymes must be resistant to nucleases in order to function as effective intracellular therapeutic agents. Improvements in the chemical synthesis of RNA (Wincott et al., 1995 Nucleic Acids Res. 23, 2677; incorporated by reference herein) have expanded the ability to modify ribozymes by introducing nucleotide modifications to enhance their nuclease stability as described above.

By "nucleotide" as used herein is as recognized in the art to include natural bases (standard), and modified bases well known in the art. Such bases are generally located at the 1' position of a sugar moiety. Nucleotide generally comprise a base, sugar and a phosphate group. The nucleotides can be unmodified or modified at the sugar, phosphate and/or base moiety, (also referred to interchangeably as nucleotide analogs, modified nucleotides, non-natural nucleotides, non-standard nucleotides and other; see for example, Usman and McSwiggen, supra; Eckstein et al., International PCT Publication No. WO 92/07065; Usman et al., International PCT Publication No. WO 93/15187; all hereby incorporated by reference herein). There are several examples of modified nucleic acid bases known in the art and has recently been summarized by Limbach et al., 1994, Nucleic Acids Res. 22, 2183. Some of the non-limiting examples of base modifications that can be introduced into enzymatic nucleic acids without significantly effecting their catalytic activity include, inosine, purine, pyridin-4-one, pyridin-2-one, phenyl, pseudouracil, 2, 4, 6-trimethoxy benzene, 3-methyl uracil, dihydrouridine, naphthyl, aminophenyl, 5-alkylcytidines 5-methylcytidine), 5-alkyluridines ribothymidine), 5-bromouridine) or 6-azapyrimidines or 6-alkylpyrimidines 6methyluridine) and others (Burgin et al., 1996, Biochemistry, 35, 14090). By "modified bases" in this aspect is meant nucleotide bases other than adenine, guanine, cytosine and uracil at 1' position or their equivalents; such bases may be used within the catalytic core of the enzyme and/or in the substrate-binding regions.

WO 99/55847 PCT/US99/09027 By "abasic" is meant sugar moieties lacking a base or having other chemical groups in place of base at the 1' position.

By "unmodified nucleoside" is meant one of the bases adenine, cytosine, guanine, uracil joined to the 1' carbon of beta-D-ribo-furanose.

By "modified nucleoside" is meant any nucleotide base which contains a modification in the chemical structure of an unmodified nucleotide base, sugar and/or phosphate.

Various modifications to ribozyme structure can be made to enhance the utility of ribozymes. Such modifications will enhance shelf-life, half-life in vitro, stability, and ease of introduction of such ribozymes to the target site, to enhance penetration of cellular membranes, and confer the ability to recognize and bind to targeted cells.

Administration of Ribozvmes Sullivan et al., PCT WO 94/02595, describes the general methods for delivery of enzymatic RNA molecules Ribozymes may be administered to cells by a variety of methods known to those familiar to the art, including, but not restricted to, encapsulation in liposomes, by iontophoresis, or by incorporation into other vehicles, such as hydrogels, cyclodextrins, biodegradable nanocapsules, and bioadhesive microspheres. For some indications, ribozymes may be directly delivered ex vivo to cells or tissues with or without the aforementioned vehicles. Alternatively, the RNA/vehicle combination is locally delivered by direct injection or by use of a catheter, infusion pump or stent. Other routes of delivery include, but are not limited to, intravascular, intramuscular, subcutaneous or joint injection, aerosol inhalation, oral (tablet or pill form), topical, systemic, ocular, intraperitoneal and/or intrathecal delivery. More detailed descriptions of ribozyme delivery and administration are provided in Sullivan et al., supra and Draper et al., PCT WO93/23569 which have been incorporated by reference herein.

The molecules of the instant invention can be used as pharmaceutical agents.

Pharmaceutical agents prevent, inhibit the occurrence, or treat (alleviate a symptom to some extent, preferably all of the symptoms) of a disease state in a patient.

The negatively charged polynucleotides of the invention can be administered RNA, DNA or protein) and introduced into a patient by any standard means, with or without stabilizers, buffers, and the like, to form a pharmaceutical composition. When it is desired to use a lipid or liposome delivery mechanism, standard protocols for formulation can be followed. The compositions of the present invention may also be formulated and used as tablets, capsules or elixirs for oral administration; suppositories for WO 99/55847 PCT/US99/09027 21 rectal administration; sterile solutions; suspensions for injectable administration; and the like.

The present invention also includes pharmaceutically acceptable formulations of the compounds described. These formulations include salts of the above compounds, e.g., acid addition salts, for example, salts of hydrochloric, hydrobromic, acetic acid, and benzene sulfonic acid.

A pharmacological composition or formulation refers to a composition or formulation in a form suitable for administration, systemic administration, into a cell or patient, preferably a human. Suitable forms, in part, depend upon the use or the route of entry, for example oral, transdermal, or by injection. Such forms should not prevent the composition or formulation to reach a target cell (Lie., a cell to which the negatively charged polymer is desired to be delivered to). For example, pharmacological compositions injected into the blood stream should be soluble. Other factors are known in the art, and include considerations such as toxicity and forms which prevent the composition or formulation from exerting its effect.

By "systemic administration" is meant in vivo systemic absorption or accumulation of drugs in the blood stream followed by distribution throughout the entire body. Administration routes which lead to systemic absorption include, without limitations: intravenous, subcutaneous, intraperitoneal, inhalation, oral, intrapulmonary and intramuscular. Each of these administration routes expose the desired negatively charged polymers, nucleic acids, to an accessible diseased tissue. The rate of entry of a drug into the circulation has been shown to be a function of molecular weight or size.

The use of a liposome or other drug carrier comprising the compounds of the instant invention can potentially localize the drug, for example, in certain tissue types, such as the tissues of the reticular endothelial system (RES). A liposome formulation which can facilitate the association of drug with the surface of cells, such as, lymphocytes and macrophages is also useful. This approach may provide enhanced delivery of the drug to target cells by taking advantage of the specificity of macrophage and lymphocyte immune recognition of abnormal cells, such as the HCV infected liver cells.

The invention also features the use of a composition comprising surface-modified liposomes containing poly (ethylene glycol) lipids (PEG-modified, or long-circulating liposomes or stealth liposomes). These formulations offer an method for increasing the accumulation of drugs in target tissues. This class of drug carriers resists opsonization and elimination by the mononuclear phagocytic system (MPS or RES), thereby enabling longer blood circulation times and enhanced tissue exposure for the encapsulated drug (Lasic et al. Chem. Rev. 1995, 95, 2601-2627; Ishiwataet al., Chem. Pharm. Bull. 1995, WO 99/55847 PCT/US99/09027 22 43, 1005-1011). Such liposomes have been shown to accumulate selectively in tumors, presumably by extravasation and capture in the neovascularized target tissues (Lasic et al., Science 1995, 267, 1275-1276; Oku et al.,1995, Biochim. Biophys. Acta, 1238, 86-90).

The long-circulating liposomes enhance the pharmacokinetics and pharmacodynamics of DNA and RNA, particularly compared to conventional cationic liposomes which are known to accumulate in tissues of the MPS (Liu et al., J. Biol. Chem. 1995, 42, 24864- 24870; Choi et al., International PCT Publication No. WO 96/10391; Ansell et al., International PCT Publication No. WO 96/10390; Holland et al., International PCT Publication No. WO 96/10392; all of these are incorporated by reference herein). All of these references are incorporated by reference herein.

In addition other cationic molecules may also be utilized to deliver the molecules of the present invention. For example, ribozymes may be conjugated to glycosylated poly(L-lysine) which has been shown to enhance localization of antisense oligonucleotides into the liver (Nakazono et al., 1996, Hepatology 23, 1297-1303; Nahato et al., 1997, Biochem Pharm. 53, 887-895). Glycosylated poly(L-lysine) may be covently attached to the enzymatic nucleic acid or be bound to enzymatic nucleic acid through electrostatic interaction.

The present invention also includes compositions prepared for storage or administration which include a pharmaceutically effective amount of the desired compounds in a pharmaceutically acceptable carrier or diluent. Acceptable carriers or diluents for therapeutic use are well known in the pharmaceutical art, and are described, for example, in Remington's Pharmaceutical Sciences, Mack Publishing Co. (A.R.

Gennaro edit. 1985) hereby incorporated by reference herein. For example, preservatives, stabilizers, dyes and flavoring agents may be provided. Id. at 1449. These include sodium benzoate, sorbic acid and esters of p-hydroxybenzoic acid. In addition, antioxidants and suspending agents may be used. A pharmaceutically effective dose is that dose required to prevent, inhibit the occurrence, or treat (alleviate a symptom to some extent, preferably all of the symptoms) a disease state. The pharmaceutically effective dose depends on the type of disease, the composition used, the route of administration, the type of mammal being treated, the physical characteristics of the specific mammal under consideration, concurrent medication, and other factors which those skilled in the medical arts will recognize.

Generally, an amount between 0.1 mg/kg and 100 mg/kg body weight/day of active ingredients is administered dependent upon potency of the negatively charged polymer.

Alternatively, the enzymatic nucleic acid molecules of the instant invention can be expressed within cells from eukaryotic promoters Izant and Weintraub, 1985 Science WO 99/55847 PCT/US99/09027 23 229, 345; McGarry and Lindquist, 1986 Proc. Natl. Acad Sci. USA 83, 399; Scanlon et al., 1991, Proc. Natl. Acad Sci. USA, 88, 10591-5; Kashani-Sabet et al., 1992 Antisense Res. Dev., 2, 3-15; Dropulic et al., 1992 J. Virol, 66, 1432-41; Weerasinghe et al., 1991 J. Virol, 65, 5531-4; Ojwang et al., 1992 Proc. Natl. Acad. Sci. USA 89, 10802-6; Chen et al., 1992 Nucleic Acids Res., 20, 4581-9; Sarver et al., 1990 Science 247, 1222-1225; Thompson et al., 1995 Nucleic Acids Res. 23, 2259; Good et al., 1997, Gene Therapy, 4, all of the references are hereby incorporated in their totality by reference herein).

Those skilled in the art realize that any nucleic acid can be expressed in eukaryotic cells from the appropriate DNA/RNA vector. The activity of such nucleic acids can be augmented by their release from the primary transcript by a ribozyme (Draper et al., PCT WO 93/23569, and Sullivan et al., PCT WO 94/02595; Ohkawa et al., 1992 Nucleic Acids Symp. Ser., 27, 15-6; Taira et al., 1991, Nucleic Acids Res., 19, 5125-30; Ventura et al., 1993 Nucleic Acids Res., 21, 3249-55; Chowrira et al., 1994 J. Biol. Chem. 269, 25856; all of the references are hereby incorporated in their totality by reference herein).

In another aspect of the invention, enzymatic nucleic acid molecules that cleave target molecules are expressed from transcription units (see for example Couture et al., 1996, TIG., 12, 510) inserted into DNA or RNA vectors. The recombinant vectors are preferably DNA plasmids or viral vectors. Ribozyme expressing viral vectors could be constructed based on, but not limited to, adeno-associated virus, retrovirus, adenovirus, or alphavirus. Preferably, the recombinant vectors capable of expressing the ribozymes are delivered as described above, and persist in target cells. Alternatively, viral vectors may be used that provide for transient expression of ribozymes. Such vectors might be repeatedly administered as necessary. Once expressed, the ribozymes cleave the target mRNA. The active ribozyme contains an enzymatic center or core equivalent to those in the examples, and binding arms able to bind target nucleic acid molecules such that cleavage at the target site occurs. Other sequences may be present which do not interfere with such cleavage.

Delivery of ribozyme expressing vectors could be systemic, such as by intravenous or intramuscular administration, by administration to target cells ex-planted from the patient followed by reintroduction into the patient, or by any other means that would allow for introduction into the desired target cell (for a review see Couture et al., 1996, TIG., 12, 510).

In one aspect the invention features, an expression vector comprising nucleic acid sequence encoding at least one of the nucleic acid catalyst of the instant invention is disclosed. The nucleic acid sequence encoding the nucleic acid catalyst of the instant invention is operable linked in a manner which allows expression of that nucleic acid molecule.

WO 99/55847 PCT/US99/09027 24 In another aspect the invention features, the expression vector comprises: a transcription initiation region eukaryotic pol I, II or III initiation region); b) a transcription termination region eukaryotic pol I, II or III termination region); c) a gene encoding at least one of the nucleic acid catalyst of the instant invention; and wherein said gene is operably linked to said initiation region and said termination region, in a manner which allows expression and/or delivery of said nucleic acid molecule. The vector may optionally include an open reading frame (ORF) for a protein operably linked on the side or the 3'-side of the gene encoding the nucleic acid catalyst of the invention; and/or an intron (intervening sequences).

Transcription of the ribozyme sequences are driven from a promoter for eukaryotic RNA polymerase I (pol RNA polymerase II (pol II), or RNA polymerase III (pol III).

Transcripts from pol II or pol III promoters will be expressed at high levels in all cells; the levels of a given pol II promoter in a given cell type will depend on the nature of the gene regulatory sequences (enhancers, silencers, etc.) present nearby. Prokaryotic RNA polymerase promoters are also used, providing that the prokaryotic RNA polymerase enzyme is expressed in the appropriate cells (Elroy-Stein and Moss, 1990 Proc. Natl.

Acad. Sci. US A, 87, 6743-7; Gao and Huang 1993 Nucleic Acids Res., 21, 2867-72; Lieber et al., 1993 Methods Enzymol., 217, 47-66; Zhou et al., 1990 Mol. Cell. Biol., 4529-37). Several investigators have demonstrated that ribozymes expressed from such promoters can function in mammalian cells Kashani-Sabet et al., 1992 Antisense Res. Dev., 2, 3-15; Ojwang et al., 1992 Proc. Natl. Acad. Sci. USA, 89, 10802-6; Chen et al., 1992 Nucleic Acids Res., 20, 4581-9; Yu et al., 1993 Proc. Natl. Acad. Sci. USA, 6340-4; L'Huillier et al., 1992 EMBO J. 11, 4411-8; Lisziewicz et al., 1993 Proc.

Natl. Acad. Sci. U S. 90, 8000-4; Thompson et al., 1995 Nucleic Acids Res. 23, 2259; Sullenger Cech, 1993, Science, 262, 1566). More specifically, transcription units such as the ones derived from genes encoding U6 small nuclear (snRNA), transfer RNA (tRNA) and adenovirus VA RNA are useful in generating high concentrations of desired RNA molecules such as ribozymes in cells (Thompson et al., supra; Couture and Stinchcomb, 1996, supra; Noonberg et al., 1994, Nucleic Acid Res., 22, 2830; Noonberg et al., US Patent No. 5,624,803; Good et al., 1997, Gene Ther. 4, 45; Beigelman et al., International PCT Publication No. WO 96/18736; all of these publications are incorporated by reference herein. The above ribozyme transcription units can be incorporated into a variety of vectors for introduction into mammalian cells, including but not restricted to, plasmid DNA vectors, viral DNA vectors (such as adenovirus or adeno-associated virus vectors), or viral RNA vectors (such as retroviral or alphavirus vectors) (for a review see Couture and Stinchcomb, 1996, supra).

WO 99/55847 PCT/US99/09027 In yet another aspect the invention features an expression vector comprising nucleic acid sequence encoding at least one of the catalytic nucleic acid molecule of the invention, in a manner which allows expression of that nucleic acid molecule. The expression vector comprises in one embodiment; a) a transcription initiation region; b) a transcription termination region; c) a gene encoding at least one said nucleic acid molecule; and wherein said gene is operably linked to said initiation region and said termination region, in a manner which allows expression and/or delivery of said nucleic acid molecule. In another preferred embodiment the expression vector comprises: a) a transcription initiation region; b) a transcription termination region; c) an open reading frame; d) a gene encoding at least one said nucleic acid molecule, wherein said gene is operably linked to the 3'-end of said open reading frame; and wherein said gene is operably linked to said initiation region, said open reading frame and said termination region, in a manner which allows expression and/or delivery of said nucleic acid molecule.

In yet another embodiment the expression vector comprises: a) a transcription initiation region; b) a transcription termination region; c) an intron; d) a gene encoding at least one said nucleic acid molecule; and wherein said gene is operably linked to said initiation region, said intron and said termination region, in a manner which allows expression and/or delivery of said nucleic acid molecule. In another embodiment, the expression vector comprises: a) a transcription initiation region; b) a transcription termination region; c) an intron; d) an open reading frame; e) a gene encoding at least one said nucleic acid molecule, wherein said gene is operably linked to the 3'-end of said open reading frame; and wherein said gene is operably linked to said initiation region, said intron, said open reading frame and said termination region, in a manner which allows expression and/or delivery of said nucleic acid molecule.

Interferons Type I interferons (IFN) are a class of natural cytokines that includes a family of greater than 25 IFN-a (Pesta, 1986, Methods Enzymol. 119, 3-14) as well as IFN-p, and IFN-o. Although evolutionarily derived from the same gene (Diaz et al., 1994, Genomics 22, 540-552), there are many differences in the primary sequence of these molecules, implying an evolutionary divergence in biologic activity. All type I IFN share a common pattern of biologic effects that begin with binding of the IFN to the cell surface receptor (Pfeffer Strulovici, 1992, Transmembrane secondary messengers for IFN-a/P. In: Interferon. Principles and Medical Applications., S. Baron, D.H. Coopenhaver, F.

Dianzani, W.R. Fleischmann Jr., T.K. Hughes Jr., G.R. Kimpel, D.W. Niesel, G.J.

Stanton, and S.K. Tyring, eds. 151-160). Binding is followed by activation of tyrosine WO 99/55847 PCT/US99/09027 26 kinases, including the Janus tyrosine kinases and the STAT proteins, which leads to the production of several IFN-stimulated gene products (Johnson et al., 1994, Sci. Am. 270, 68-75). The IFN-stimulated gene products are responsible for the pleotropic biologic effects of type I IFN, including antiviral, antiproliferative, and immunomodulatory effects, cytokine induction, and HLA class I and class II regulation (Pestka et al., 1987, Annu. Rev.

Biochem 56, 727). Examples of IFN-stimulated gene products include synthetase (2-5 OAS), P2-microglobulin, neopterin, p68 kinases, and the Mx protein (Chebath Revel, 1992, The 2-5 A system: 2-5 A synthetase, isospecies and functions.

In: Interferon. Principles and Medical Applications. S. Baron, D.H. Coopenhaver, F.

Dianzani, W.R. Jr. Fleischmann, T.K. Jr Hughes, G.R. Kimpel, D.W. Niesel, G.J. Stanton, and S.K. Tyring, eds., pp. 225-236; Samuel, 1992, The RNA-dependent P1/eIF-2c protein kinase. In: Interferon. Principles and Medical Applications. S. Baron, D.H.

Coopenhaver, F. Dianzani, W.R. Fleischmann Jr., T.K. Hughes Jr., G.R. Kimpel, D.W.

Niesel, G.H. Stanton, and S.K. Tyring, eds. 237-250; Horisberger, 1992, MX protein: function and Mechanism of Action. In: Interferon. Principles and Medical Applications.

S. Baron, D.H. Coopenhaver, F. Dianzani, W.R. Fleischmann Jr., T.K. Hughes Jr., G.R.

Kimpel, D.W. Niesel, G.H. Stanton, and S.K. Tyring, eds. 215-224). Although all type I IFN have similar biologic effects, not all the activities are shared by each type I IFN, and, in many cases, the extent of activity varies quite substantially for each IFN subtype (Fish et al, 1989, J. Interferon Res. 9, 97-114; Ozes et al., 1992, J. Interferon Res. 12, 55-59).

More specifically, investigations into the properties of different subtypes of IFN-a and molecular hybrids of IFN-a have shown differences in pharmacologic properties (Rubinstein, 1987, J. Interferon Res. 7, 545-551). These pharmacologic differences may arise from as few as three amino acid residue changes (Lee et al., 1982, Cancer Res. 42, 1312-1316).

Eighty-five to 166 amino acids are conserved in the known IFN-a subtypes.

Excluding the IFN-a pseudogenes, there are approximately 25 known distinct IFN-a subtypes. Pairwise comparisons of these nonallelic subtypes show primary sequence differences ranging from 2% to 23%. In addition to the naturally occurring IFNs, a nonnatural recombinant type I interferon known as consensus interferon (CIFN) has been synthesized as a therapeutic compound (Tong et al., 1997, Hepatology 26, 747-754).

Interferon is currently in use for at least 12 different indications including infectious and autoimmune diseases and cancer (Borden, 1992, N. Engl. J. Med. 326, 1491-1492). For autoimmune diseases IFN has been utilized for treatment of rheumatoid arthritis, multiple sclerosis, and Crohn's disease. For treatment of cancer IFN has been used alone or in combination with a number of different compounds. Specific types of WO 99/55847 PCT/US99/09027 27 cancers for which IFN has been used include squamous cell carcinomas, melanomas, hypemephromas, hemangiomas, hairy cell leukemia, and Kaposi's sarcoma. In the treatment of infectious diseases, IFNs increase the phagocytic activity of macrophages and cytotoxicity of lymphocytes and inhibits the propagation of cellular pathogens. Specific indications for which IFN has been used as treatment include: hepatitis B, human papillomavirus types 6 and 11 genital warts) (Leventhal et al., 1991, N Engl J Med 325, 613-617), chronic granulomatous disease, and hepatitis C virus.

Numerous well controlled clinical trials using IFN-alpha in the treatment of chronic HCV infection have demonstrated that treatment three times a week results in lowering of serum ALT values in approximately 50% (range 40% to 70%) of patients by the end of 6 months of therapy (Davis et al., 1989, The new England Journal of Medicine 321, 1501-1506; Marcellin et al., 1991, Hepatology 13, 393-397; Tong et al., 1997, Hepatology 26, 747-754; Tong et al., Hepatology 26, 1640-1645). However, following cessation of interferon treatment, approximately 50% of the responding patients relapsed, resulting in a "durable" response rate as assessed by normalization of serum ALT concentrations of approximately 20 to 25%. In addition, studies that have examined six months of type 1 interferon therapy using changes in HCV RNA values as a clinical endpoint have demonstrated that up to 35% of patients will have a loss of HCV RNA by the end of therapy (Tong et al., 1997, supra). However, as with the ALT endpoint, about 50% of the patients relapse six months following cessation of therapy resulting in a durable virologic response of only 12% Studies that have examined 48 weeks of therapy have demonstrated that the sustained virological response is up to Ribozymes in combination with IFN have the potential to improve the effectiveness of treatment of HCV or any of the other indications discussed above.

Ribozymes targeting RNAs associated with diseases such as infectious diseases, autoimmune disases, and cancer, can be used individually or in combination with other therapies such as IFN to achieve enhanced efficacy.

Examples The following are non-limiting examples showing the selection, isolation, synthesis and activity of enzymatic nucleic acids of the instant invention.

The following examples demonstrate the selection of ribozymes that cleave HCV RNA. The methods described herein represent a scheme by which ribozymes may be derived that cleave other RNA targets required for HCV replication.

WO 99/55847 PCTIUS99/09027 28 Example 1: Identification of Potential Ribozvme Cleavage Sites in HCV RNA The sequence of HCV RNA was screened for accessible sites using a computer folding algorithm. Regions of the mRNA that did not form secondary folding structures and contained potential hammerhead and/or hairpin ribozyme cleavage sites were identified. The sequences of these cleavage sites are shown in tables IV-VIII.

Example 2: Selection of Ribozvme Cleavage Sites in HCV RNA To test whether the sites predicted by the computer-based RNA folding algorithm corresponded to accessible sites in HCV RNA, 20 hammerhead sites were selected for analysis. Ribozyme target sites were chosen by analyzing genomic sequences of HCV (Input Sequence HPCJTA (Acc#D11168 DO 1171)) and prioritizing the sites on the basis of folding. Hammerhead ribozymes were designed that could bind each target (see Figure 1) and were individually analyzed by computer folding (Christoffersen et al., 1994 J. Mol.

Struc. Theochem, 311, 273; Jaeger et al., 1989, Proc. Natl. Acad. Sci. USA, 86, 7706) to assess whether the ribozyme sequences fold into the appropriate secondary structure.

Those ribozymes with unfavorable intramolecular interactions between the binding arms and the catalytic core were eliminated from consideration. As noted below, varying binding arm lengths can be chosen to optimize activity. Generally, at least 5 bases on each arm are able to bind to, or otherwise interact with, the target RNA.

Selection of ribozyme candidates was initiated by scanning for all hammerhead cleavage sites in an HCV RNA sequence derived from a patient infected with HCV genotype lb. The results of this sequence analysis are shown in Table III. As seen by Table III, 1300 hammerhead ribozyme sites were identified by this analysis. Next, in order to identify hammerhead ribozyme candidates that would cleave in the conserved regions of the HCV genome, a sequence alignment of approximately 50 HCV isolates from genotypes la, lb, 2a, 2b, 2c, 3a, 3b, 4a, 5a, and 6 was completed. Within genotype sites were identified that are in areas having the greatest sequence identity between all isolates examined. This analysis reduced the hammerhead ribozyme candidates to about 23 (Table III).

Due to the high sequence variability of the HCV genome, selection of ribozymes for broad therapeutic applications should probably involve the conserved regions of the HCV genome. A list of the thirty-hammerhead ribozymes derived from the conserved regions Non-Coding Region (NCR), end of core protein coding region, and 3'- NCR) of the HCV genome is shown in Table IV. In general, ribozymes targeted to sites located in the 5' terminal region of the HCV genome should block translation while WO 99/55847 PCTIUS99/09027 29 ribozymes cleavage sites located in the 3' terminal region of the genome should block RNA replication.

Example 3: Chemical Synthesis and Purification of Ribozymes Ribozymes of the hammerhead or hairpin motif were designed to anneal to various sites in the RNA message. The binding arms are complementary to the target site sequences described above. The ribozymes were chemically synthesized. The method of synthesis used followed the procedure for normal RNA synthesis as described in Usman et al., (1987 J. Am. Chem. Soc., 109, 7845), Scaringe et al., (1990 Nucleic Acids Res., 18, 5433) and Wincott et al., supra, and made use of common nucleic acid protecting and coupling groups, such as dimethoxytrityl at the 5'-end, and phosphoramidites at the 3'-end.

The average stepwise coupling yields were >98%.

Inactive hammerhead ribozymes were synthesized by substituting switching the order of GsA 6 and substituting a U for A 1 4 (numbering from Hertel et al., 1992 Nucleic Acids Res., 20, 3252). Hairpin ribozymes were synthesized in two parts and annealed to reconstruct the active ribozyme (Chowrira and Burke, 1992 Nucleic Acids Res., 20, 2835- 2840). Ribozymes were also synthesized from DNA templates using bacteriophage T7 RNA polymerase (Milligan and Uhlenbeck, 1989, Methods Enzymol. 180, 51).

Ribozymes were modified to enhance stability by modification with nuclease resistant groups, for example, 2'-amino, 2'-C-allyl, 2'-flouro, 2'-O-methyl, 2'-H (for a review see Usman and Cedergren, 1992 TIBS 17, 34). Ribozymes were purified by gel electrophoresis using general methods or were purified by high pressure liquid chromatography (HPLC; See Wincott et al., supra; the totality of which is hereby incorporated herein by reference) and were resuspended in water. The sequences of the chemically synthesized ribozymes used in this study are shown below in Table IV -IX.

Example 4: Ribozvme Cleavage of HCV RNA Target in vitro Ribozymes targeted to the HCV are designed and synthesized as described above.

These ribozymes can be tested for cleavage activity in vitro, for example using the following procedure. The target sequences and the nucleotide location within the HCV are given in Table IV.

Cleavage Reactions: Full-length or partially full-length, internally-labeled target RNA for ribozyme cleavage assay is prepared by in vitro transcription in the presence of [ao- 32 p] CTP, passed over a G 50 Sephadex column by spin chromatography and used as substrate RNA without further purification. Alternately, substrates are 5'- 3 2 P-end labeled using T4 polynucleotide kinase enzyme. Assays are performed by pre-warming a 2X WO 99/55847 PCT/US99/09027 concentration of purified ribozyme in ribozyme cleavage buffer (50 mM Tris-HCl, pH at 37 0 C, 10 mM MgCl 2 and the cleavage reaction was initiated by adding the 2X ribozyme mix to an equal volume of substrate RNA (maximum of 1-5 nM) that was also pre-warmed in cleavage buffer. As an initial screen, assays are carried out for 1 hour at 37 0 C using a final concentration of either 40 nM or 1 mM ribozyme, ribozyme excess.

The reaction is quenched by the addition of an equal volume of 95% formamide, 20 mM EDTA, 0.05% bromophenol blue and 0.05% xylene cyanol after which the sample is heated to 95 C for 2 minutes, quick chilled and loaded onto a denaturing polyacrylamide gel. Substrate RNA and the specific RNA cleavage products generated by ribozyme cleavage are visualized on an autoradiograph of the gel. The percentage of cleavage is determined by Phosphor Imager® quantitation of bands representing the intact substrate and the cleavage products.

Example 5: Ability of HCV Ribozymes to Cleave HCV RNA in patient serum.

Ribozymes targeting sites in HCV RNA were synthesized using modifications that confer nuclease resistance (Beigelman, 1995, J. Biol. Chem. 270, 25702). It has been well documented that serum from chronic hepatitis C patients contains on average 3 x 106 copies/ml of HCV RNA. To further select ribozyme product candidates, the 30 HCV specific ribozymes are characterized for HCV RNA cleavage activity utilizing HCV RNA isolated from the serum of genotype lb HCV patients. The best candidates from the HCV genotype lb screen will be screened against isolates from the wide range of HCV genotypes including la, Ib, 2a, 2b, 2c, 3a, 3b, 4a, 5a, and 6. Therefore, it is possible to select ribozyme candidates for further development based on their ability to broadly cleave HCV RNA from a diverse range of HCV genotypes and quasispecies.

Example 6: Ribozvme Cleavage of Conserved HCV RNA Target Sites in vitro There are three regions of the genome that are highly conserved, both within a genotype and across different genotypes. These conserved sequences occur in the 5' and 3' non-coding regions (NCRs) as well as the 5'-end of the Core Protein coding region.

These regions are thought to be important for HCV RNA replication and translation.

Thus, therapeutic agents that target these conserved HCV genomic regions may have a significant impact over a wide range of HCV genotypes. The presence of quasispecies, and the potential for infection with more than one genotype makes this a critical feature of an effective therapy. Moreover, it is unlikely that drug resistance will occur, since mutations that have been suggested to lead to drug resistance typically do not occur within these highly conserved regions. In order to target multiple genotypes and decrease the WO 99/55847 PCT[US99/09027 31 chance of developing drug resistance, Applicant has designed ribozymes that cleave in regions of identity within the conserved regions discussed above.

Sequence alignments were performed for the 5' NCR, the 5' end of the Core Protein coding region, and the 3' NCR. For the 5' NCR, 34 different isolates representing genotypes la, lb, 2a, 2b, 2c, 3a, 3b, 4a, 4f, and 5a were aligned. The alignments included the sequences from nucleotide position 1 to nucleotide position 350 (18 nucleotides downstream of the initiator ATG codon), using the reported sequence "HPCK1SI" as the reference for numbering. For the Core Protein coding region, 44 different isolates representing genotypes la, Ib, 2a, 2b, 2c, 3a, 3b, 4a, 4c, 4f, 5a, and 6a were aligned.

These alignments included 600 nucleotides, beginning 8 nucleotides upstream of the initiator ATG codon. As the reference for numbering, the reported sequence "HPCCOPR" was used, with the eight nucleotides upstream of the initiator codon ATG designated as For the 3' NCR region, 20 different isolates representing genotypes Ib, 2a, 2b, 3a, and 3b were aligned. These alignments included sequences in the 3' terminal 235 nucleotides of the genome, with the reported sequence "D85516" used as the reference for numbering, and the 23 5 h nucleotide from the 3' end designated as During analysis of the alignments of each region, each sequence was compared to the respective reference sequence (identified above), and regions of identity across all isolates were determined. All potential ribozyme sites were identified in the reference sequence. The highest priority for choosing ribozyme sites was that the site should have 100% identity across all isolates aligned, at every position in both the cleavage site and binding arms. Ribozyme sites that met these criteria were chosen. In addition, two specific allowances were made as follows. 1) If a potential ribozyme site had 100% sequence identity at all except one or two nucleotide positions, then the actual nucleotide at that position was examined in the isolate(s) that differed. If that nucleotide was such that a ribozyme designed to allow "G:U wobble" base-paring could function on all the isolates, then that site was chosen. 2) If a potential ribozyme site had 100% sequence identity at all except one or two nucleotide positions, then the genotype of the isolate which contained the differing nucleotide(s) was examined. If the genotype of the isolate that differed was of extremely rare prevalence, then that site was also chosen.

Ribozyme sites identified and referred to below use the following nomenclature: "region of the genome in which the site exists" followed by "nucleotide position 5' to the cleavage site" (according to the reference sequence and numbering described above). For example, a ribozyme cleavage site at nucleotide position 67 in the 5' NCR is designated and a ribozyme cleavage site at position 48 in the core coding region is designated "c48".

WO 99/55847 PCT/US99/09027 32 A number of these ribozymes were screened in an in vitro HCV cleavage assay to select appropriate ribozyme candidates for cell culture studies. The ribozymes selected for screening targeted the 5' UTR region that is necessary for HCV translation. These sites are all conserved among the 8 major HCV genotypes and 18 subtypes, and have a high degree of homology in every HCV isolate that was used in the analysis described above. HCV RNA of four different genotypes (Ib, 2a, 4, and 5) were isolated from human patients and the 5' HCV UTR and 5' core region were amplified using RT-PCR. Run-off transcripts of the 5' HCV UTR region (-750 nt transcripts) were prepared from the RT- PCR products, which contained a T7 promoter, using the T7 Megascript transcription kit and the manufacturers protocol (Ambion, Inc.). Unincorporated nucleotides are removed by spin column filtration on Bio-Gel P-60 resin (Bio-Rad). The filtered transcript was end labeled with 32 P using Polynucleotide Kinase (Boehringer/Mannheim) and 150.Ci/tl Gamma-32P-ATP (NEN) using the enzyme manufacturer's protocol. The kinased transcript is spin purified again to remove unincorporated Gamma-32P-ATP and gel purified on 5% polyacrylamide gel.

Ribozymes targeting various sites from table IV were selected and tested on the HCV UTR transcript sequence to test the efficiency of RNA cleavage. 15 ribozymes were synthesized as previously described (Wincott et al., supra).

Assays were performed by pre-warming a 2X (2 pM concentration of purified ribozyme in ribozyme cleavage buffer (50mM TRIS pH 7.5, 10mM MgCl2, 10 units RNase Inhibitor (Boehringer/Mannheim), 10mM DTT, 0.5p g tRNA) and the cleavage reaction was initiated by adding the 2X ribozyme mix to an equal volume of substrate RNA (17.46 pmole final concentration) that was also pre-warmed in cleavage buffer. The assay was carried out for 24 hours at 37 0 C using a final concentration of 1 PM ribozyme, ribozyme excess. The reaction was quenched by the addition of an equal volume of formamide, 20 mM EDTA, 0.05% bromophenol blue and 0.05% xylene cyanol after which the sample is heated to 95 0 C for 2 minutes, quick chilled and loaded onto a denaturing polyacrylamide gel. Substrate RNA and the specific RNA cleavage products generated by ribozyme cleavage are visualized on an autoradiograph of the gel. The percentage of cleavage is determined by Phosphor Imager® quantitation of bands representing the intact substrate and the cleavage products.

Observed cleavage fragment sizes from the gels are correlated to predicted fragment sizes by comparison to the RNA marker. The optical density of expected cleavage fragments are determined from the phosphorimage plates and ranked from highest density, indicating the most cleavage product, to lowest of each genotype of HCV transcript tested. The top 3 cleaving ribozymes (out of 15 ribozymes tested) are given WO 99/55847 PCTIUS99/09027 33 ranking values of 5, the next 3 highest densities are given ranking values of 4, etc for every genotype tested. The ranking values for each ribozyme are averaged between the genotypes tested. Individual and average ribozyme ranking values are graphed and compared. The results (figure 2) demonstrate that many of these tested ribozymes are able to to give high levels of cleavage regardless of genotype. In particular, ribozymes targeting site HCV.5-258, HCV.5-294, HCV.5-313 (Sakamoto et al., .J Clinical Investigation 1996 98(12):2720-2728), and HCV.5-318 (table IV) appear to demonstrate a consistent pattern of RNA cleavage Example 7:Inhibition of Luciferase Activity Using HCV Targeting Ribozvmes in OST7 Cells The capability of ribozymes to inhibit HCV RNA intracellularly was tested using a dual reporter system that utilizes both firefly and Renilla luciferase (figure The ribozymes targeted to the 5' HCV UTR region, which when cleaved, would prevent the translation of the transcript into luciferase. OST-7 cells were plated at 12,500 cells per well in black walled 96 well plates (Packard) in medium DMEM containing 10% fetal bovine serum, 1% pen/strep, and 1% L-glutamine and incubated at 37°C overnight. A plasmid containing T7 promoter expressing 5' HCV UTR and firefly luciferase (T7C1- 341 (Wang et al., 1993, J. of Virol. 67, 3338-3344)) was mixed with a Renilla control plasmid (Promega Corporation) followed by ribozyme, and cationic lipid to make a 5X concentration of the reagents (T7C1-341 (4 pg/ml), pRLSV40 renilla luciferase control (6 p.g/ml), ribozyme (250 nM), transfection reagent (28.5p.g/ml).

The complex mixture was incubated at 37 0 C for 20 minutes. The media was removed from the cells and 120 p.1 of Opti-mem media was added to the well followed by .l of the 5X complex mixture. 150 ptl of Opti-mem was added to the wells holding the untreated cells. The complex mixture was incubated on OST-7 cells for 4 hours, lysed with passive lysis buffer (Promega Corporation) and luminescent signals were quantified using the Dual Luciferase Assay Kit using the manufacturer's protocol (Promega Corporation). The ribozyme sequences used are given in table IV. The ribozymes used were of the hammerhead motif. The hammerhead ribozymes were chemically modified such that the ribozyme consists of ribose residues at five positions (see for example Figure position 4 has either 2'-C-allyl or 2'-amino modification; position 7 has either 2'-amino modification or 2-O-methyl modification; the remaining nucleotide positions contain 2'-Omethyl substitutions; four nucleotides at the 5' terminus contains phosphorothioate substitutions. Additionally, the 3' end of the ribozyme includes a linked inverted abasic moiety (abasic deoxyribose; iH). The data (figure 4) is given as a ratio between the WO 99/55847 PCT/US99/09027 34 firefly and Renilla luciferase fluorescence. All of the ribozymes targeting 5' HCV UTR were able to reduce firefly luciferase signal relative to renilla luciferase.

Example 9: Ribozvme Mediated Inhibition of Luciferase Activity Compared to its Inactive Control in OST-7 Cells The dual reporter system described above was utilized to determine the level of reduction of luciferase activity mediated by a ribozyme compared to its inactive control.

Ribozymes, having the chemical composition described in the previous example, to sites HCV 313 and 318 (table IV) and their inactive controls were synthesized as above. The inactive control has the same nucleotide base composition as the active ribozyme but the nucleotide sequence has been scrambled. The protocols utilized for tissue culture and the luciferase assay was exactly as given in example 8 except the ribozyme concentration in the 5X complex mixture was 1 mM (final concentration on the cells was 200 nM).

The results are given in figure 5. The ribozyme targeting HCV.5-318 was able to greatly reduce firefly luciferase activity compared to the untreated and inactive controls. The ribozyme targeting HCV.5-313 was able to slightly reduce firefly luciferase activity compared to the inactive control.

Example 10: Ribozvme Inhibition of Viral Replication During HCV infection, viral RNA is present as a potential target for ribozyme cleavage at several processes: uncoating, translation, RNA replication and packaging.

Target RNA may be more or less accessible to ribozyme cleavage at any one of these steps. Although the association between the HCV initial ribosome entry site (IRES) and the translation apparatus is mimicked in the HCV 5'UTR/luciferase reporter system (example these other viral processes are not represented in the OST7 system. The resulting RNA/protein complexes associated with the target viral RNA are also absent.

Moreover, these processes may be coupled in an HCV-infected cell which could further impact target RNA accessibility. Therefore, we tested whether ribozymes designed to cleave the HCV 5'UTR could effect a replicating viral system.

Recently, Lu and Wimmer characterized an HCV-poliovirus chimera in which the poliovirus IRES was replaced by the IRES from HCV (Lu Wimmer, 1996, Proc. Natl.

Acad. Sci. USA. 93, 1412-1417). Poliovirus (PV) is a positive strand RNA virus like HCV, but unlike HCV is non-enveloped and replicates efficiently in cell culture. The HCV-PV chimera expresses a stable, small plaque phenotype relative to wild type PV.

The following ribozymes were synthesized for the experiment (table VIII): ribozyme targeting site 183 (3 5'-end phosphorothioate linkages), scrambled control to site WO 99/55847 PCT/US99/09027 183, ribozyme to site 318 (3 5'-end phosphorothioate linkages), ribozyme targeting site 183 (4 5'-end phosphorothioate linkages), inactive ribozyme targeting site 183 (4 phosphorothioate linkages). HeLa cells were infected with the HCV-PV chimera for minutes and immediately treated with ribozyme. HeLa cells were seeded in U-bottom 96well plates at a density of 9000-10,000 cells/well and incubated at 37 0 C under 5% CO 2 for 24 h. Transfection of ribozyme (200 nM) was achieved by mixing of 10X ribozyme (2000 nM) and 10X of a cationic lipid (80 tg/ml) in DMEM (Gibco BRL) with 5% fetal bovine serum (FBS). Ribozyme/lipid complexes were allowed to incubate for 15 minutes at 37 0

C

under 5% CO 2 Medium was aspirated from cells and replaced with 80 pls of DMEM (Gibco BRL) with 5% FBS serum, followed by the addition of 20 gils of 10X complexes.

Cells were incubated with complexes for 24 hours at 37 0 C under 5% CO 2 The yield of HCV-PV from treated cells (Fig. 6A) was quantified by plaque assay.

The plaque assays were performed by diluting virus samples in serum-free DMEM (Gibco BRL) and applying 100 pl to HeLa cell monolayers confluent) in 6-well plates for 30 minutes. Infected monolayers were overlayed with 3 ml 1.2% agar (Sigma) and incubated at 37 0 C under 5% CO 2 Two three days later the overlay was removed, monolayers were stained with 1.2% crystal violet, and plaque forming units were counted.

The data is shown in figure 6A. Ribozymes to site 183 inhibited HCV-PV replication by (P 0.05) compared to the scrambled control (Fig. 6A, first two bars). In addition, 3 or 4 phosphorothioate stabilization was equally effective (P 0.05 vs. control for each) in inhibiting viral replication (compare 1st and 4 h bar in Fig. 6A). Ribozymes to the 318 site also had a statistically significant (P 0.05), effect on viral replication (compare 2 nd and 3 rd bar in Fig. 6A).

To confirm that a ribozyme cleavage mechanism was responsible for the inhibition of HCV-PV replication observed, HCV-PV infected cells were treated with ribozymes to site 183 that maintained binding arm sequences but contained a mutation in the catalytic core to attenuate cleavage activity (Table Viral replication in these cells was not inhibited compared to cells treated with the scrambled control ribozyme (Fig. 6A, 4" and th bar), indicating that ribozyme cleavage activity was required for the inhibition of HCV- PV replication observed. In addition, ribozymes targeting site 183 of the HCV 5'UTR had no effect on wild type PV replication (Fig. 6B). These data provide evidence that the ribozyme-mediated inhibition of HCV-PV replication was dependent upon the HCV UTR and not a general inhibition of PV replication.

Ribozymes to site 183 were also tested for the ability to inhibit HCV-PV replication during a single infectious cycle in HeLa cells (Fig. Cells treated with WO 99/55847 PCT/US99/09027 36 ribozyme to site 183 (7/4 format) produced significantly less virus than cells treated with the scrambled control inhibition at 8h post infection, P 0.001).

Example 11: Shortening of Ribozyme lengths.

All the ribozymes described in example 10 above contained 7 nucleotides on each binding arms and contained a 4 base-paired stem II element (7/4 format). For pharmaceutical manufacture of a therapeutic ribozyme it is advantageous to minimize sequence length if possible. Thus ribozymes to site 183 were shortened by removing the outer most nucleotide from each binding arm such that the ribozyme has six nucleotides in each binding arm and the stem II region is four base-paired long (6/4 format); removing one base-pair (2 nucleotides) in stem II resulting in a 3 base-paired stem II (7/3 format); or removing one nucleotide from each binding arm and shortening the stem II by one basepair (6/3 format). (See Figure 7 for a schematic representation of each of these ribozymes). Ribozymes in all tested formats gave significant inhibition of viral replication (Fig. 8) with the 7/4, 7/3 and 6/3 formats being almost identical at the 8h timepoint (P 0.001 across time course for all formats). The shortest ribozyme tested (6/3 format) was slightly more efficacious inhibition, P 0.001) than the 7/4 ribozyme inhibition, P 0.001). The 6/3 ribozyme may have a greater ability to access site 183 in the HCV-PV chimera.

Example 12: Combination Therapy ofHCV Ribozvmes and Interferon HeLa cells (10,000 cells per well) were pre-treated with 12.5 Units/ml of Interferon alpha in complete media (DMEM 5% FBS) or pre-treated with complete media alone for 4 hours and then infected with HCV-PV at an MOI 0.1 for 30 minutes.

The viral inoculum was then removed and 200 nM ribozyme targeted to HCV site 183 (Rz) or binding attenuated control, which has mutations in the catalytic core of the ribozyme that severely attenuates the activity of the ribozyme, (BAC) was delivered using cationic lipid in complete media for 24 hours. After 24 hours, the cells were lysed three times by freeze/thaw to release virus and virus was quantified by plaque assay. Viral yield is shown as mean plaque forming units per ml (pfu/ml) SEM. The data is shown in figure Pre-treatment with interferon (IFN) reduces the viral yield by -10 in control treated cells (BAC+IFN versus BAC). Ribozyme treated cells produce 2 x 10"' less virus than control-treated cells (Rz versus BAC). The combination of Rz and IFN treatment results in a synergistic 4 x 10- 2 reduction in viral yield (Rz+IFN versus BAC). An additive effect would result in only a 3 x 10' reduction (1 x 10-' 2 x 10-1).

WO 99/55847 PCT/US99/09027 37 Example 13: Inhibition of Hepatitis C virus Using other Ribozvme Motifs A number of varying ribozyme motifs (RPI motifs 1-3; Figure were tested for their ability to inhibit HCV propagation in tissue culture. An example of RPI motif I is described in Kore et al., 1998, Nucleic Acids Research 26, 4116-4120, while an example of RPI motif II is described in Ludwig Sproat, International PCT Publication No. WO 98/58058). RPI motif III is a new ribozyme motif which applicant has recently developed and an example of this motif was tested herein.

OST7 cells were maintained in Dulbecco's modified Eagle's medium (GIBCO BRL) supplemented with 10% fetal calf serum, L-glutamine (2mM) and penicillin/streptomycin. For transfections, OST7 cells were seeded in black-walled 96-well plates (Packard Instruments) at a density of 12,500 cells/well and incubated at 37 0 C under

CO

2 for 24 hours. Co-transfection of target reporter HCVT7C (0.8 p.g/ml), control reporter pRLSV40, (1.2 pg/ml) and ribozyme, 50-200 nM was achieved by the following method: a 5X mixture of HCVT7C (4 pg/ml), pRLSV40 (6 lg/ml), ribozyme (250-1000 nM) and cationic lipid (28.5 pg/ml) was made in 150 pls of OPTI-MEM (GIBCO BRL) minus serum. Reporter/ribozyme/lipid complexes were allowed to form for 20 minutes at 37 0 C under 5% CO 2 Medium was aspirated from OST7 cells and replaced with 120 gls of OPTI-MEM (GIBCO BRL) minus serum, immediately followed by the addition of 30 .ls of 5X reporter/ribozyme/lipid complexes. Cells were incubated with complexes for 4 hours at 37 0 C under 5% CO 2 Luciferase assay was performed as described in example 7.

The data is summarized in table IX, with each motifs results listed along with its control.

All of the ribozyme motifs were able to reduce the amount of HCV produced by the cells compared to the ribozymes not targeted to any HCV (irrelevant controls).

Cell Culture Assays Although there have been reports of replication of HCV in cell culture (see below), these systems are difficult to replicate and have proven unreliable. Therefore, as was the case for development of other anti-HCV therapeutics such as interferon and ribavirin, after demonstration of safety in animal studies applicant can proceed directly into a clinical feasibility study.

Several recent reports have documented in vitro growth of HCV in human cell lines (Mizutani et al., Biochem Biophys Res Commun 1996 227(3):822-826; Tagawa et al., Journal of Gasteroenterology and Hepatology 1995 10(5):523-527; Cribier et al., Journal of General Virology 76(10):2485-2491; Seipp et al., Journal of General Virology 1997 78(10)2467-2478; lacovacci et al., Research Virology 1997 148(2):147-151; Iocavacci et al., Hepatology 1997 26(5) 1328-1337; Ito et al., Journal of General Virology WO 99/55847 PCT/US99/09027 38 1996 77(5):1043-1054; Nakajima et al., Journal of Virology 1996 70(5):3325-3329; Mizutani et al., Journal of Virology 1996 70(10):7219-7223; Valli et al., Res Virol 1995 146(4): 285-288; Kato et al., Biochem Biophys Res Comm 1995 206(3):863-869).

Replication of HCV has been demonstrated in both T and B cell lines as well as cell lines derived from human hepatocytes. Demonstration of replication was documented using either RT-PCR based assays or the b-DNA assay. It is important to note that the most recent publications regarding HCV cell cultures document replication for up to 6-months.

In addition to cell lines that can be infected with HCV, several groups have reported the successful transformation of cell lines with cDNA clones of full-length or partial HCV genomes (Harada et al., Journal of General Virology 1995 76(5)1215-1221; Haramatsu et al., Journal of Viral Hepatitis 1997 4S(1):61-67; Dash et al., American Journal of Pathology 1997 151(2):363-373; Mizuno et al., Gasteroenterology 1995 109(6):1933-40; Yoo et al., Journal Of Virology 1995 69(1):32-38).

Animal Models The best characterized animal system for HCV infection is the chimpanzee.

Moreover, the chronic hepatitis that results from HCV infection in chimpanzees and humans is very similar. Although clinically relevant, the chimpanzee model suffers from several practical impediments that make use of this model difficult. These include; high cost, long incubation requirements and lack of sufficient quantities of animals. Due to these factors, a number of groups have attempted to develop rodent models of chronic hepatitis C infection. While direct infection has not been possible several groups have reported on the stable transfection of either portions or entire HCV genomes into rodents (Yamamoto et al., Hepatology 1995 22(3): 847-855; Galun et al., Journal of Infectious Disease 1995 172(1):25-30; Koike et al., Journal of general Virology 1995 76(12)3031-3038; Pasquinelli et al., Hepatology 1997 25(3): 719-727; Hayashi et al., Princess Takamatsu Symp 1995 25:1430149; Mariya K, Yotsuyanagi H, Shintani Y, Fujie H, Ishibashi K, Matsuura Y, Miyamura T, Koike K. Hepatitis C virus core protein induces hepatic steatosis in transgenic mice. Journal of General Virology 1997 78(7) 1527-1531; Takehara et al., Hepatology 1995 21(3):746-751; Kawamura et al., Hepatology 1997 25(4): 1014-1021). In addition, transplantation of HCV infected human liver into immunocompromised mice results in prolonged detection of HCV RNA in the animal's blood.

Diagnostic uses Ribozymes of this invention may be used as diagnostic tools to examine genetic drift and mutations within diseased cells or to detect the presence of HCV RNA in a cell.

WO 99/55847 PCT/US99/09027 39 The close relationship between ribozyme activity and the structure of the target RNA allows the detection of mutations in any region of the molecule, which alters the basepairing and three-dimensional structure of the target RNA. By using multiple ribozymes described in this invention, one may map nucleotide changes, which are important to RNA structure and function in vitro, as well as in cells and tissues. Cleavage of target RNAs with ribozymes may be used to inhibit gene expression and define the role (essentially) of specified gene products in the progression of disease. In this manner, other genetic targets may be defined as important mediators of the disease. These experiments will lead to better treatment of the disease progression by affording the possibility of combination therapies multiple ribozymes targeted to different genes, ribozymes coupled with known small molecule inhibitors, or intermittent treatment with combinations of ribozymes and/or other chemical or biological molecules). Other in vitro uses of ribozymes of this invention are well known in the art, and include detection of the presence of mRNAs associated with HCV related condition. Such RNA is detected by determining the presence of a cleavage product after treatment with a ribozyme using standard methodology.

In a specific example, ribozymes which can cleave only wild-type or mutant forms of the target RNA are used for the assay. The first ribozyme is used to identify wild-type RNA present in the sample and the second ribozyme will be used to identify mutant RNA in the sample. As reaction controls, synthetic substrates of both wild-type and mutant RNA will be cleaved by both ribozymes to demonstrate the relative ribozyme efficiencies in the reactions and the absence of cleavage of the "non-targeted" RNA species. The cleavage products from the synthetic substrates will also serve to generate size markers for the analysis of wild-type and mutant RNAs in the sample population. Thus each analysis will require two ribozymes, two substrates and one unknown sample which will be combined into six reactions. The presence of cleavage products will be determined using an RNase protection assay so that full-length and cleavage fragments of each RNA can be analyzed in one lane of a polyacrylamide gel. It is not absolutely required to quantify the results to gain insight into the expression of mutant RNAs and putative risk of the desired phenotypic changes in target cells. The expression of mRNA whose protein product is implicated in the development of the phenotype HCV) is adequate to establish risk.

If probes of comparable specific activity are used for both transcripts, then a qualitative comparison of RNA levels will be adequate and will decrease the cost of the initial diagnosis. Higher mutant form to wild-type ratios will be correlated with higher risk whether RNA levels are compared qualitatively or quantitatively.

WO 99/55847 PCT/US99/09027 Additional Uses Potential usefulness of sequence-specific enzymatic nucleic acid molecules of the instant invention might have many of the same applications for the study of RNA that DNA restriction endonucleases have for the study of DNA (Nathans et al., 1975 Ann. Rev.

Biochem. 44:273). For example, the pattern of restriction fragments could be used to establish sequence relationships between two related RNAs, and large RNAs could be specifically cleaved to fragments of a size more useful for study. The ability to engineer sequence specificity of the ribozyme is ideal for cleavage of RNAs of unknown sequence.

Other embodiments are within the following claims.

WO 99/55847 PCTIUS99/09027 41 TABLE I Characteristics of naturally occurring ribozvmes Group I Introns Size: -150 to >1000 nucleotides.

Requires a U in the target sequence immediately 5' of the cleavage site.

Binds 4-6 nucleotides at the 5'-side of the cleavage site.

S Reaction mechanism: attack by the 3'-OH of guanosine to generate cleavage products with 3'-OH and Additional protein cofactors required in some cases to help folding and maintainance of the active structure.

Over 300 known members of this class. Found as an intervening sequence in Tetrahymena thermophila rRNA, fungal mitochondria, chloroplasts, phage T4, blue-green algae, and others.

Major structural features largely established through phylogenetic comparisons, mutagenesis, and biochemical studies [1,2] Complete kinetic framework established for one ribozyme Studies of ribozyme folding and substrate docking underway Michel, Francois; Westhof, Eric. Slippery substrates. Nat. Struct. Biol. (1994), 5-7.

2 Lisacek, Frederique; Diaz, Yolande; Michel, Francois. Automatic identification of group I intron cores in genomic DNA sequences. J. Mol. Biol. (1994), 235(4), 1206-17.

3 Herschlag, Daniel; Cech, Thomas Catalysis of RNA cleavage by the Tetrahymena thermophila ribozyme. 1. Kinetic description of the reaction of an RNA substrate complementary to the active site.

Biochemistry (1990), 29(44), 10159-71.

4 Herschlag, Daniel; Cech, Thomas Catalysis of RNA cleavage by the Tetrahymena thermophila ribozyme. 2. Kinetic description of the reaction of an RNA substrate that forms a mismatch at the active site. Biochemistry (1990), 29(44), 10172-80.

Knitt, Deborah Herschlag, Daniel. pH Dependencies of the Tetrahymena Ribozyme Reveal an Unconventional Origin of an Apparent pKa. Biochemistry (1996), 35(5), 1560-70.

6 Bevilacqua, Philip Sugimoto, Naoki; Turner, Douglas A mechanistic framework for the second step of splicing catalyzed by the Tetrahymena ribozyme. Biochemistry (1996), 35(2), 648-58.

7 Li, Yi; Bevilacqua, Philip Mathews, David; Turner, Douglas Thermodynamic and activation parameters for binding of a pyrene-labeled substrate by the Tetrahymena ribozyme: docking is not diffusioncontrolled and is driven by a favorable entropy change. Biochemistry (1995), 34(44), 14394-9.

8 Banerjee, Aloke Raj; Turner, Douglas The time dependence of chemical modification reveals slow steps in the folding of a group I ribozyme. Biochemistry (1995), 34(19), 6504-12.

WO 99/55847 PCT/US99/09027 42 Chemical modification investigation of important residues well established The small (4-6 nt) binding site may make this ribozyme too non-specific for targeted RNA cleavage, however, the Tetrahymena group I intron has been used to repair a "defective" f3-galactosidase message by the ligation of new (3-galactosidase sequences onto the defective message [12].

RNAse P RNA (Ml RNA) Size: -290 to 400 nucleotides.

RNA portion of a ubiquitous ribonucleoprotein enzyme.

Cleaves tRNA precursors to form mature tRNA [13].

Reaction mechanism: possible attack by M2+-OH to generate cleavage products with 3'-OH and RNAse P is found throughout the prokaryotes and eukaryotes. The RNA subunit has been sequenced from bacteria, yeast, rodents, and primates.

Recruitment of endogenous RNAse P for therapeutic applications is possible through hybridization of an External Guide Sequence (EGS) to the target RNA [14,15] Important phosphate and 2' OH contacts recently identified 9 Zarrinkar, Patrick Williamson, James The P9.1-P9.2 peripheral extension helps guide folding of the Tetrahymena ribozyme. Nucleic Acids Res. (1996), 24(5), 854-8.

Strobel, Scott Cech, Thomas Minor groove recognition of the conserved G.cntdot.U pair at the Tetrahymena ribozyme reaction site. Science (Washington, D. (1995), 267(5198), 675-9.

1 Strobel, Scott Cech, Thomas Exocyclic Amine of the Conserved G.cntdot.U Pair at the Cleavage Site of the Tetrahymena Ribozyme Contributes to 5'-Splice Site Selection and Transition State Stabilization. Biochemistry (1996), 35(4), 1201-11.

12. Sullenger, Bruce Cech, Thomas Ribozyme-mediated repair of defective mRNA by targeted trans-splicing. Nature (London) (1994), 371(6498), 619-22.

3. Robertson, Altman, Smith, J.D. J. Biol. Chem., 247, 5243-5251 (1972).

14. Forster, Anthony Altman, Sidney. External guide sequences for an RNA enzyme. Science (Washington, D. 1883-) (1990), 249(4970), 783-6.

Yuan, Hwang, E. Altman, S. Targeted cleavage of mRNA by human RNase P. Proc. Natl.

Acad. Sci. USA (1992) 89, 8006-10.

16 Harris, Michael Pace, Norman Identification of phosphates involved in catalysis by the ribozyme RNase P RNA. RNA (1995), 210-18.

17 Pan, Tao; Loria, Andrew; Zhong, Kun. Probing of tertiary interactions in RNA: 2'-hydroxyl-base contacts between the RNase P RNA and pre-tRNA. Proc. Natl. Acad. Sci. U. S. A. (1995), 92(26), 12510- 14.

WO 99/55847 PCT/US99/09027 43 Group II Introns Size: >1000 nucleotides.

Trans cleavage of target RNAs recently demonstrated [8,19].

Sequence requirements not fully determined.

Reaction mechanism: 2'-OH of an internal adenosine generates cleavage products with 3'-OH and a "lariat" RNA containing a and a branch point.

Only natural ribozyme with demonstrated participation in DNA cleavage [2021] in addition to RNA cleavage and ligation.

Major structural features largely established through phylogenetic comparisons [22] Important 2' OH contacts beginning to be identified [23] Kinetic framework under development [24] Neurospora VS RNA Size: -144 nucleotides.

Trans cleavage of hairpin target RNAs recently demonstrated Sequence requirements not fully determined.

18 Pyle, Anna Marie; Green, Justin Building a Kinetic Framework for Group II Intron Ribozyme Activity: Quantitation of Interdomain Binding and Reaction Rate. Biochemistry (1994), 33(9), 2716-25.

19 Michels, William J. Jr.; Pyle, Anna Marie. Conversion of a Group II Intron into a New Multiple- Turnover Ribozyme that Selectively Cleaves Oligonucleotides: Elucidation of Reaction Mechanism and Structure/Function Relationships. Biochemistry (1995), 34(9), 2965-77.

Zimmerly, Steven; Guo, Huatao; Eskes, Robert; Yang, Jian; Perlman, Philip Lambowitz, Alan A group II intron RNA is a catalytic component of a DNA endonuclease involved in intron mobility.

Cell (Cambridge, Mass.) (1995), 83(4), 529-38.

21 Griffin, Edmund Jr.; Qin, Zhifeng; Michels, Williams Jr.; Pyle, Anna Marie. Group II intron ribozymes that cleave DNA and RNA linkages with similar efficiency, and lack contacts with substrate 2'hydroxyl groups. Chem. Biol. (1995), 2(11), 761-70.

22 Michel, Francois; Ferat, Jean Luc. Structure and activities of group II introns. Annu. Rev. Biochem.

(1995), 64, 435-61.

23 Abramovitz, Dana Friedman, Richard Pyle, Anna Marie. Catalytic role of 2'-hydroxyl groups within a group II intron active site. Science (Washington, D. (1996), 271(5254), 1410-13.

24 Daniels, Danette Michels, William Jr.; Pyle, Anna Marie. Two competing pathways for selfsplicing by group II introns: a quantitative analysis of in vitro reaction rates and products. J. Mol. Biol.

(1996), 256(1), 31-49.

Guo, Hans C. Collins, Richard Efficient trans-cleavage of a stem-loop RNA substrate by a ribozyme derived from Neurospora VS RNA. EMBO J. (1995), 14(2), 368-76.

WO 99/55847 PCT/US99/09027 44 Reaction mechanism: attack by 2'-OH 5' to the scissile bond to generate cleavage products with 2',3'-cyclic phosphate and 5'-OH ends.

Binding sites and structural requirements not fully determined.

Only 1 known member of this class. Found in Neurospora VS RNA.

Hammerhead Ribozyme (see text for references) Size: -13 to 40 nucleotides.

Requires the target sequence UH immediately 5' of the cleavage site.

Binds a variable number nucleotides on both sides of the cleavage site.

Reaction mechanism: attack by 2'-OH 5' to the scissile bond to generate cleavage products with 2',3'-cyclic phosphate and 5'-OH ends.

14 known members of this class. Found in a number of plant pathogens (virusoids) that use RNA as the infectious agent.

Essential structural features largely defined, including 2 crystal structures [26 27] Minimal ligation activity demonstrated (for engineering through in vitro selection) [28 Complete kinetic framework established for two or more ribozymes [29.

Chemical modification investigation of important residues well established Hairpin Ribozvme Size: -50 nucleotides.

Requires the target sequence GUC immediately 3' of the cleavage site.

Binds 4-6 nucleotides at the 5'-side of the cleavage site and a variable number to the 3'-side of the cleavage site.

26 Scott, Finch, Aaron,K. The crystal structure of an all RNA hammerhead ribozyme:Aproposed mechanism for RNA catalytic cleavage. Cell, (1995), 81, 991-1002.

27 McKay, Structure and function of the hammerhead ribozyme: an unfinished story. RNA, (1996), 2, 395-403.

28 Long, Uhlenbeck, Hertel, K. Ligation with hammerhead ribozymes. US Patent No.

5,633,133.

29 Hertel, Herschlag, Uhlenbeck, O. A kinetic and thermodynamic framework for the hammerhead ribozyme reaction. Biochemistry, (1994) 33, 3374-3385.Beigelman, et al., Chemical modifications of hammerhead ribozymes. J. Biol. Chem., (1995) 270, 25702-25708.

Beigelman, et al., Chemical modifications of hammerhead ribozymes. J. Biol. Chem., (1995) 270, 25702-25708.

WO 99/55847 PCT/US99/09027 Reaction mechanism: attack by 2'-OH 5' to the scissile bond to generate cleavage products with 2',3'-cyclic phosphate and 5'-OH ends.

3 known members of this class. Found in three plant pathogen (satellite RNAs of the tobacco ringspot virus, arabis mosaic virus and chicory yellow mottle virus) which uses RNA as the infectious agent.

Essential structural features largely defined [,32,33,34] Ligation activity (in addition to cleavage activity) makes ribozyme amenable to engineering through in vitro selection Complete kinetic framework established for one ribozyme [36].

Chemical modification investigation of important residues begun Hepatitis Delta Virus (HDV) Ribozyme Size: -60 nucleotides.

Trans cleavage of target RNAs demonstrated [39].

31 Hampel, Arnold; Tritz, Richard; Hicks, Margaret; Cruz, Phillip. 'Hairpin' catalytic RNA model: evidence for helixes and sequence requirement for substrate RNA. Nucleic Acids Res. (1990), 18(2), 299- 304.

32 Chowrira, Bharat Berzal-Herranz, Alfredo; Burke, John Novel guanosine requirement for catalysis by the hairpin ribozyme. Nature (London) (1991), 354(6351), 320-2.

33 Berzal-Herranz, Alfredo; Joseph, Simpson; Chowrira, Bharat Butcher, Samuel Burke, John Essential nucleotide sequences and secondary structure elements of the hairpin ribozyme. EMBO J.

(1993), 12(6), 2567-73.

34 Joseph, Simpson; Berzal-Herranz, Alfredo; Chowrira, Bharat Butcher, Samuel Substrate selection rules for the hairpin ribozyme determined by in vitro selection, mutation, and analysis of mismatched substrates. Genes Dev. (1993), 130-8.

Berzal-Herranz, Alfredo; Joseph, Simpson; Burke, John In vitro selection of active hairpin ribozymes by sequential RNA-catalyzed cleavage and ligation reactions. Genes Dev. (1992), 129-34.

36 Hegg, Lisa Fedor, Martha Kinetics and Thermodynamics of Intermolecular Catalysis by Hairpin Ribozymes. Biochemistry (1995), 34(48), 15813-28.

37 Grasby, Jane Mersmann, Karin; Singh, Mohinder; Gait, Michael Purine Functional Groups in Essential Residues of the Hairpin Ribozyme Required for Catalytic Cleavage of RNA. Biochemistry (1995), 34(12), 4068-76.

38 Schmidt, Sabine; Beigelman, Leonid; Karpeisky, Alexander; Usman, Nassim; Sorensen, Ulrik S.; Gait, Michael Base and sugar requirements for RNA cleavage of essential nucleoside residues in internal loop B of the hairpin ribozyme: implications for secondary structure. Nucleic Acids Res. (1996), 24(4), 573- 81.

39 Perrotta, Anne Been, Michael Cleavage of oligoribonucleotides by a ribozyme derived from the hepatitis .delta. virus RNA sequence. Biochemistry (1992), 31(1), 16-21.

WO 99/55847 PCTIUS99/09027 46 Binding sites and structural requirements not fully determined, although no sequences 5' of cleavage site are required. Folded ribozyme contains a pseudoknot structure Reaction mechanism: attack by 2'-OH 5' to the scissile bond to generate cleavage products with 2',3'-cyclic phosphate and 5'-OH ends.

Only 2 known members of this class. Found in human HDV.

Circular form of HDV is active and shows increased nuclease stability [41] Perrotta, Anne Been, Michael A pseudoknot-like structure required for efficient selfcleavage of hepatitis delta virus RNA. Nature (London) (1991), 350(6317), 434-6.

41 Puttaraju, Perrotta, Anne Been, Michael A circular trans-acting hepatitis delta virus ribozyme. Nucleic Acids Res. (1993), 21(18), 4253-8.

WO 99/55847 WO 9955847PCTIUS99/09027 47 Table 11: 2.5 Itmol RNA Synthesis Cycle Reagent Equivalents Amount Wait Time* Phosphoramidites 6.5 163 p1 S-Ethyl Tetrazole 23.8 238 pl, Acetic Anhydride 100 233 [LL 5 sec N-Methyl Imidazole 186 233 pL, 5 sec TCA 83.2 1.73 mL 21 sec Iodine 8.0 1.18 mL 45 sec Acetonitrile NA 6.67 ml NA Wait time does not include contact time during delivery.

WO 99/55847 PCT/US99/09027 48 Table III: Ribozyme Selection Characteristics Characteristic Number HCV Genome Length 9436 kb All Hammerhead Cleavage Sites 1300 Conserved Region Hammerhead 23 Cleavage Sites HCV Genotype Ib was the prototype strain Based on sequence alignments from HCV genotype la, Ib, Ic, 2a, 2b, 2c 3a, 3b, 4a, 4c, 4f, 5a, and 6a WO 99/55847 PCTIUS99/09027 Table IV: Hammerhead Ribozymes Derived from Conserved Regions of the HCV Genome Name__ Substrate Ribozyme Sequence

NCR

HCV.5-50 CUACUGU C UUCACGC GCGUGAA CUGAUGAGGCCGUUAGGCCGAA ACAGLIAG FICV.5-67 AAAGCGU C UAGCCAU AUGGCUA CUGAUGAGGCCGUUAGGCCGAA ACGCUUU HCV.5-69 AGCGUCU A GCCAUGG CCAUGGC CUGAUGAGGCCGUUAGGCCGAA AGACGCU HCV.5-92 UGAGUGU C GUGCAGC GCUGCAC CUGAUGAGGCCGUUAGGCCGAA ACACUCA HCV.5-130 GAGCCAU A GUGGUCU AGACCAC CUGAUGAGGCCGUUAGGCCGAA AUGOCUC HCV.S-136 UAGUGGU C UGCGGAA UUCCGCA CUGAUGAGGCCGUUAGGCCGAA ACCACUA HCV.5-153 GGUGAGU A CACCGGA UCCGGUG CUGAUGAGGCCGUUAGGCCGAA ACUCACC HCV.5-18O ACCGGGU C CUUUCUU AAGAAAG CUGAUGAGGCCGUUAGGCCGAA ACCCGGU HCV.5.183 GGGUCCU U UCUUGGA UCCAAGA CUGAUGAGGCCGUUAGGCCGAA AGGACCC HCV.5-184 GGUCCUU U CUUGGAU AUCCAAG CUGAUGAGGCCGUUAGGCCGAA AAGGACC HCV.5-258 GUUGGGU C GCGAAAG CUUUCGC CUGAUGAGGCCGUUAGGCCGAA ACCCAAC HCV.5-270 AAGGCCU U GUGGUAC GUACCAC CUGAUGAGGCCGUUAGGCCGAA AGGCCUU HCV.5-294 GGGUGCU U GCGAGUG CACUCGC CUGAUGAGGCCGUUAGGCCGAA AGCACCC HCV.5-313 GGGAGGU C UCGUAGA UCUACGA CUGAUGAGGCCGUUAGGCCGAA ACCUCCC HCV.5-315 GAGGUCU C GUAGACC GGUCUAC CUGAUGAGGCCGUUAGGCCGAA AGACCUC HCV.5-318 GUCUCGU A GACCGUG CACOGUC CUGAUGAGGCCGUUAGGCCGAA ACGAGAC Core Regioni UAAACCU C AAAGAAA UUUCUUU CUGAUGAGGCCGUUAGGCCGAA AGGUUUA HCV.C-48 CAAACGU A ACACCAA UUGGUGU CUGAUGAGGCCGUUAGGCCGAA ACGUUUG CAACCGU C GCCCACA UGUGGOC CUGAUGAGGCCGUUAGGCCGAA ACGGUUG HCV.C-175 GAGCGGU C ACAACCU AGGUUGU CUGAUGAGGCCGUUAGGCCGAA ACCGCUC HCV.C-374 GUAAGGU C AUCGAUA UAUCGAU CUGAUGAGGCCGUUAGGCCGAA ACCUUAC 3'NCR HCV.3-I IS UUUUUUU U UUUUUUU AAAAAAA CUGAUGAGGCCGUUAGGCCGAA AAAAAAA HCV.3-145 GGUGGCU C CAUCUUA UAAGAUG CUGAUGAGGCCGUUAGGCCGAA AGCCACC HCV.3-149 GCUCCAU C UUAGCCC GGGCUAA CUGAUGAGGCCGUUAGGCCGAA AUGGAGC HCV.3-151 UCCAUCU U AGCCCUA UAGGGCU CUGAUGAGGCCGUUAGGCCGAA AGAUGGA HCV.3-152 CCAUCUU A GCCCUAG CUAGGGC CUGAUGAGGCCGUUAGGCCGAA AAGAUGG HICV.3-158 UAGCCCU A GUCACGG CCGUGAC CUGAUGAGGCCGUUAGGCCGAA AGGGCUA HCV.3-161 CCCUAGU C ACGGCUA UAGCCGU CUGAUGAGGCCGUUAGGCCGAA ACUAGOG HCV.3.168 CACGGCU A GCUGUGA UCACAGC CUGAUGAGGCCGUUAGGCCGAA AGCCGUG HCV.3-181 GAAAGGU C CGUGAGC GCUCACO CUGAUGAGGCCGUUAGGCCGAA ACCUUUC WO 99/55847 PCT/US99/09027 Table V: HCV Hammerhead Ribozyme and Target Sequence No. Name Nt. Hammerhead Ribozyme Substrate Pos.

1 HCV-27 27 UAUGGUG CUGAUGAG X CGAA AGUGUCG CGACACJ C CACCAUA 2 HCV-114 114 GGUCCUG CUGAUGAG X CGAA AGGCUGC GCAGCCJ C CAGGACC 3 HCV-128 128 CUCCCGG CUGAUGAG X CGAA AGGGGGG CCCCCCU C CCGGGAG 4 HCV-148 148 UUCCGCA CtJGAUGAG X CGAA ACCACUA UAGUGGU C EJGCGGAA HCV-165 165 UCCGGUG CUGAUGAG X CGAA ACUCACC GGUGAGU A CACCGGA 6 HCV-175 175 UCCUGGC CUGAUGAG X CGAA AUUCCGG CCGGAAU U GCCAGGA 7 HCV-199 199 UUGAUCC CUGAUGAG X CGAA AGAAAGG CCUUUCU U GGAUCAA 8 HCV-213 213 AGGCAUU CUGAUGAG X CGAA AGCGGGU ACCCGCU C AAUGCCU 9 HCV-252 252 ACUCGGC CUGAUGAG X CGAA AGCAGUC GACUGCU A GCCGAGU HCV-260 260 CCAACAC CUGAUGAG X CGAA ACUCGGC GCCGAGU A GUGUUGG 11 HCV-265 265 GCGACCC CUGAUGAG X CGAA ACACUAC GUAGUGU U GGGUCGC 12 HCV-270 270 CUUUCGC CUGAUGAG X CGAA ACCCAAC GUUGGGU C GCGAAAG 13 HCV-288 288 CAGGCAG CUGAUGAG X CGAA ACCACAA UUGUGGU A CUGCCUG 14 HCV-298 298 AGCACCC CUGAUGAG X CGAA AUCAGGC GCCUGAU A GGGUGCU HCV-306 .306 CACUCGC CUGAUGAG X CGAA AGCACCC GGGUGCU U GCGAGUG 16 HCV-325 325 UCUACGA CUGAUGAG X CGAA ACCUCCC GGGAGGU C UCGUAGA 17 HCV-327 327 GGUCUAC CUGAUGAG X CGAA AGACCUC GAGGUCU C GUAGACC 18 H-CV-330 330 CACGGUC CUGAUGAG X CGAA ACGAGAC GUCUCGU A GACCGUG 19 HCV-407 407 GGAACUU CUGAUGAG X CGAA ACGUCCU AGGACGU C AAGUUCC HCV-412 412 GCCCGGG CUGAUGAG X CGAA ACUUGAC GUCAAGU U CCCGGGC 21 HCV-413 413 CGCCCGG CUGAUGAG X CGAA AACUUGA UCAAGUU C CCGGGCG 22 HCV-426 426 ACGAUCU CUGAUGAG X CGAA ACCACCG CGGUGGU C AGAUCGU 23 H-CV-472 472 CACACCC CUGAUGAG X CGAA ACGUGGG CCCACGU U GGGUGUG 24 HCV-489 489 GUCUUCC CUGAUGAG X CGAA AGUCGCG CGCGACU A GGAAGAC HCV-498 498 CGUUCGG CUGAUGAG X CGAA AGUCUUC GAAGACU U CCGAACG 26 HCV-499 499 CCGUUCG CUGAUGAG X CGAA AAGUCUU AAGACUU C CGAACGG 27 HCV-508 508 AGGUUGC CUGAUGAG X CGAA ACCGUUC GAACGGU C GCAACCU WO 99/55847 PCTfUS99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

28 HCV-534 534 UUGGGGA CUGAUGAG X CGAA AGGUUGU ACAACCU A UCCCCAA 29 HCV-536 536 CCUUGGG CUGAUGAG X CGAA AUAGGUU AACCtJAU C CCCAAGG HCV-546 546 GGUCGGC CUGAUGAG X CGAA AGCCUUG CAAGGCU C GCCGACC 31 HCV-561 561 CAGGCCC CUGAUGAG X CGAA ACCCUCG CGAGGGU A GGGCCUG 32 HCV-573 573 CCAGGCU CUGAUGAG X CGAA AGCCCAG CUGGGCU C AGCCUGG 33 HCV-583 583 CCAAGGG CUGAUGAG X CGAA ACCCAGG CCUGGGU A CCCUUGG 34 HCV-588 588 AGGGGCC CUGAUGAG X CGAA AGGGUAC GUACCCU U GGCCCCU HCV-596 596 UGCCAUA CUGAUGAG X CGAA AGGGGCC GGCCCCU C UAUGGCA 36 HCV-598 598 AUUGCCA CUGAUGAG X CGAA AGAGGGG CCCCUCU A UGGCAAU 37 HCV-632 632 GUGACAG CUGAUGAG X CGAA AGCCAUC GAUGGCU C CUGUCAC 38 HCV-637 637 GCGGGGU CUGAUGAG X CGAA ACAGGAG CUCCUGU C ACCCCGC 39 HCV-649 649 AGGCCGG CUGAUGAG X CGAA AGCCGCG CGCGGCU C CCGGCCU jHCV-657 657 jCCCCAAC CUGAUGAG X CGAA AGGCCGG CCGGCCU A GUUGGGG 41 HCV-660 660 GGGCCCC CUGAUGAG X CGAA ACUAGGC GCCUAGU U GGGGCCC 42 HCV-696 696 UUACCCA CUGAUGAG X CGAA AUUGCGC GCGCAAU C UGGGUAA 43 HCV-707 707 UAUCGAU CUGAUGAG X CGAA ACCUUAC GUAAGGU C AUCGAUA 44 HCV-710 710 GGGUAUC CUGAUGAG X CGAA AUGACCU AGGUCAU C GAUACCC HCV-714 714 GUGAGGG CUGAUGAG X CGAA AUCGAUG CAUCGAU A CCCUCAC 46 HCV-730 730 GUCGGCG CUGAUGAG X CGAA AGCCGCA UGCGGCU U CGCCGAC 47 HCV-731 731 GGUCGGC CUGAUGAG X CGAA AAGCCGC GCGGCUU C GCCGACC 48 HCV-748 748 CGGAAUG CUGAUGAG X CGAA ACCCCAU AUGGGGU A CAUUCCG 49 HCV-752 752 CGAGCGG CUGAUGAG X CGAA AUGUACC GGUACAU U CCGCUCG HCV-753 753 ACGAGCG CUGAUGAG X CGAA AAUGUAC GUACAUU C CGCUCGU 51 HCV-758 758 CGCCGAC CUGAUGAG X CGAA AGCGGAA UUCCGCU C GUCGGCG 52 HCV-761 761 GGGCGCC CUGAUGAG X CGAA ACGAGCG CGCUCGU C GGCGCCC 53 HCV-773 773 CGCCCCC CUGAUGAG X CGAA AGGGGGG CCCCCCU A GGGGGCG 54 HCV-806 806 GAACCCG CUGAUGAG X CGAA ACACCAU AUGGUGU C CGGGUUC HCV-812 812 CCUCCAG CUGAUGAG X CGAA ACCCGGA UCCGGGU U CUGGAGG 56 HCV-813 813 UCCUCCA CUGAUGAG X CGAA AACCCGG CCGGGUU C UGGAGGA 57 HCV-832 832 UGUUGCG CUGAUGAG X CGAA AGUUCAC GUGAACU A CGCAACA WO 99/55847 PCTIUS99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

58 HCV-847 847 ACCGGGC CUGAUGAG X CGAA AGUUCCC GGGAACU U GCCCGGU 59 HCV-855 855 AAAGAGC CUGAUGAG X CGAA ACCGGGC GCCCGGU U GCUCUUU HCV-859 859 AGAGAAA CUGAUGAG X CGAA AGCAACC GGUUGCU C UUUCUCU 61 HCV-982 982 UGCCEJCA CUGAUGAG X CGAA ACACAAU AUUGUGU A UGAGGCA 62 HCV-1001 1001 UAUGCAU CUGAUGAG X CGAA AUCAUGC GCAUGAU C AUGCAUA 63 HCV-1022 1022 CGCAGGG CUGAUGAG X CGAA ACGCACC GGUGCGU A CCCUGCG 64 HCV-1031 1031 UCUCCCG CUGAUGAG X CGAA ACGCAGG CCUGCGU U CGGGAGA HCV-1032 1032 UUCUCCC CUGAUGAG X CGAA AACGCAG CUGCGUU C GGGAGAA 66 HCV-1048 1048 ACAACGG CUGAUGAG X CGAA AGGCGUU AACGCCU C CCGUUGU 67 HCV-1053 1053 ACCCAAC CUGAUGAG X CGAA ACGGGAG CUCCCGU U GUUGGGU 68 HCV-1056 1056 GCUACCC CUGAUGAG X CGAA ACAACGG CCGUUGU U GGGUAGC 69 HCV-1061 1061 UGAGCGC CUGAUGAG X CGAA ACCCAAC GUUGGGU A GCGCUCA HCV-1127 1127 GCAAGUC CUGAUGAG X CGAA ACGUGGC GCCACGU C GACUUGC 71 HCV-1132 1132 AACGAGC CUGAUGAG X CGAA AGUCGAC GUCGACU U GCUCGUU 72 HCV-1136 1136 CCCCAAC CUGAUGAG X CGAA AGCAAGU ACUUGCU C GUUGGGG 73 HCV-1139 1139 CCGCCCC CUGAUGAG X CGAA ACGAGCA UGCUCGU U GGGGCGG 74 HCV-1153 1153 GGAACAG CUGAUGAG X CGAA AAGCGGC GCCGCUU U CUGUUCC HCV-1154 1154 CGGAACA CUGAUGAG X CGAA AAAGCGG CCGCUUU C UGUUCCG 76 HCV-1158 1158 AUGGCGG CUGAUGAG X CGAA ACAGAAA UUUCUGU U CCGCCAU 77 HCV-1159 1159 CAUGGCG CUGAUGAG X CGAA AACAGAA UUCUGUU C CGCCAUG 78 HCV-1168 1168 CCCCACG CUGAUGAG X CGAA ACAUGGC GCCAUGU A CGUGGGG 79 HCV-1189 1189 GAAAACG CUGAUGAG X CGAA AUCCGCA UGCGGAU C CGUUUUC HCV-1193 1193 CGAGGAA CUGAUGAG X CGAA ACGGAUC GAUCCGU U UUCCUCG 81 HCV-1194 1194 ACGAGGA CUGAUGAG X CGAA AACGGAU AUCCGUU U UCCUCGU 82 HCV-1195 1195 GACGAGG CUGAUGAG X CGAA AAACGGA UCCGUUU U CCUCGUC 83 HCV-1196 1196 AGACGAG CUGAUGAG X CGAA AAAACGG CCGUUUU C CUCGUCU 84 HCV-1280 1280 GACCUGA CUGAUGAG X CGAA ACAUGGC GCCAUGU A UCAGGUC HCV-1282 1282 GUGACCU CUGAUGAG X CGAA AUACAUG CAUGUAU C AGGUCAC 86 HCV-1287 1287 AUGCGGU CUGAUGAG X CGAA ACCUGAU AUCAGGU C ACCGCAU 87 HCV-1373 1373 UAUCCAC CUGAUGAG X CGAA ACAGCUU AAGCUGU C GUGGAUA WO 99/55847 PCTIUS99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

88 HCV-1380 1380 GCCACCA CUGAUGAG X CGAA AUCCACG CGUGGAU A UGGUGGC 89 HCV-1406 1406 CCGCUAG CUGAUGAG X CGAA ACUCCCC GGGGAGU C CUAGCGG HCV-1409 1409 GGCCCGC CUGAUGAG X CGAA AGGACUC GAGUCCU A GCGGGCC 91 HCV-1418 1418 AGUAGGO CUGAUGAG X CGAA AGGCCCG CGGGCCU U GCCUACU 92 HCV-1423 1423 GGAAUAG CUGAUGAG X CGAA AGGCAAG CUUGCCU A CUAUUCC 93 HCV-1426 1426 CAUGGAA CUGAUGAG X CGAA AGUAGGC GCCUACU A UUCCAUG 94 HCV-1428 1428 ACCAUGG CUGAUGAG X CGAA AUAGUAG CUACUAU U CCAUGGU HCV-1429 1429 CACCAUG CUGAUGAG X CGAA AAUAGUA UACUAUU C CAUGGUG 96 HCV-1727 1727 ACUUGUC CUGAUGAG X CGAA AUGGAGC GCUCCAU C GACAAGU 97 HCV-1735 1735 CUGAGCG CUGAUGAG X CGAA ACUUGUC GACAAGU U CGCUCAG 98 HCV-1736 1736 CCUGAGC CUGAUGAG X CGAA AACUUGU ACAAGUU C GCUCAGG 99 HCV-1740 1740 CAUCCCU CUGAUGAG X CGAA AGCGAAC GUUCGCU C AGGGAUG 100 HCV-1757 1757 UAUAGGU CUGAUGAG X CGAA AUGGGGC GCCCCAU C ACCUAUA 1011 HCV-1762 1762 CUCGGUA CUGAUGAG X CGAA AGGUGAU AUCACCU A UACCGAG 102 HCV-1795 1795 CCAGCAG CUGAUGAG X CGAA AAGGCCU AGGCCUU A CUGCUGG 103 HCV-1806 1806 GGUGCGU CUGAUGAG X CGAA AUGCCAG CUGGCAU U ACGCACC 104 HCV-1807 1807 AGGUGCG CUGAUGAG X CGAA AAUGCCA UGGCAUU A CGCACCU 105 HCV-1815 1815 CACUGCC CUGAUGAG X CGAA AGGUGCG CGCACCU C GGCAGUG 106 HCV-1827 1827 GGUACGA CUGAUGAG X CGAA ACCACAC GUGUGGU A UCGUACC 107 HCV-1829 1829 CAGGUAC CUGAUGAG X CGAA AUACCAC GUGGUAU C GUACCUG 108 HCV-1832 1832 ACGCAGG CUGAUGAG X CGAA ACGAUAC GUAUCGU A CCUGCGU 1091 HCV-1840 1840 CACCUGC CUGAUGAG X CGAA ACGCAGG CCUGCGU C GCAGGUG 110 HCV-1854 1854 UACACUG CUGAUGAG X CGAA ACCACAC GUGUGGU C CAGUGUA 111 HCV-1883 1883 CCACUAC CUGAUGAG X CGAA ACAGGGC GCCCUGU U GUAGUGG 112 HCV-1886 1886 UCCCCAC CUGAUGAG X CGAA ACAACAG CUGUUGU A GUGGGGA 113 HCV-1902 1902 CCGGACC CUGAUGAG X CGAA AUCGGUC GACCGAU C GGUCCGG 114 1HCV-1906 .1906 .GGCACCG CUGAUGAG X CGAA ACCGAUC GAUCGGU C CGGUGCC 115 HCV-1917 1917 UUAUACG CUGAUGAG X CGAA AGGGGCA UGCCCCU A CGUAUAA 116 HCV-1921 1921 CCAGUUA CUGAUGAG X CGAA ACGUAGG CCUACGU A UAACUGG 1171 HCV-1923 1923 cCCCAGU CUGAUGAG X CGAA AUACGUA UACGUAU A ACUGGGG WO 99/55847 PCT/US99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

118 HCV-1990 1990 ACAGCCA CUGAUGAG X CGAA ACCAGUU AACUGGU U UGGCUGU 119 H-CV-1991 1991 UACAGCC CUGAUGAG X CGAA AACCAGU ACUGGUU U GGCUGUA 120 HCV-1998 1998 AUCCAUG CUGAUGAG X CGAA ACAGCCA UGGCUGU A CAUGGAU 121 HCV-2043 2043 UUGCACG CUGAUGAG X CGAA AGGGCCC GGGCCCU C CGUGCAA 122 HCV-2054 2054 CCCCCCC CUGAUGAG X CGAA AUGUUGC GCAACAU C GGGGGGG 123 HCV-2063 2063 GGUUGCC CUGAUGAG X CGAA ACCCCCC GGGGGGU C GGCAACC 124 HCV-2072 2072 UCAAGGU CUGAUGAG X CGAA AGGUUGC GCAACCU C ACCUUGA 125 HCV-2077 2077 GCAGGUC CUGAUGAG X CGAA AGGUGAG CUCACCU U GACCUGC 126 HCV-2121 2121 UUUGUGU CUGAUGAG X CGAA AGUGGCC GGCCACU U ACACAAA 127 HCV-2122 2122 UUUUGUG CUGAUGAG X CGAA AAGUGGC GCCACUU A CACAAAA 128 HCV-2137 2137 UGGCCCC CUGAUGAG X CGAA AGCCACA UGUGGCU C GGGGCCA 1291 HCV-2149 2149 AGGUGUU CUGAUGAG X CGAA ACCAUGG CCAUGGU U AACACCU 1301 HCV-2150 21.50 UAGGUGU CUGAUGAG X CGAA AACCAUG CAUGGUU A ACACCUA 131 HCV-2219 2219 CCUUAAA CUGAUGAG X CGAA AUGGUAA UUACCAU C UUUAAGG 132 HCV-2221 2221 AACCUUA CUGAUGAG X CGAA AGAUGGU ACCAUCU U UAAGGUU 133 HCV-2261 2261 CAGCACU CUGAUGAG X CGAA AGCCUGU ACAGGCU U AGUGGUG 134 HCV-2262 2262 GCAGCAC CUGAUGAG X CGAA AAGCCUG CAGGCUU A GUGCUGC 1351 HCV-2295 2295 AGGUCGC CUGAUGAG X CGAA ACGCUCU AGAGCGU U GCGACCU 136 HCV-2320 2320 GAGCUCC CUGAUGAG X CGAA AUCUGUC GACAGAU C GGAGCUC 137 HCV-2327 2327 GCGGGCU CUGAUGAG X CGAA AGCUCCG CGGAGCU C AGCCCGC 138 HCV-2344 2344 UGUCGUG CUGAUGAG X CGAA ACAGCAG CUGCUGU C CACGACA 139 HCV-2417 2417 UCUGAUG CUGAUGAG X CGAA AGGUGGA UCCACCU C CAUCAGA 140 HCV-2421 2421 AUGUUCU CUGAUGAG X CGAA AUGGAGG CCUCCAU C AGAACAU 141 HCV-2429 2429 CGUCCAC CUGAUGAG X CGAA AUGUUCU AGAACAU C GUGGACG 142 HCV-2534 2534 AGGCACA CUGAUGAG X CGAA ACGCGCG CGCGCGU C UGUGCCU 1431 HCV-2585 2585 GGUUCUC CUGAUGAG X CGAA AGGGCGG CCGCCCU A GAGAACC 144 1HCV-2600 2600 CGUUGAG CUGAUGAG X CGAA ACCACCA UGGUGGU C CUCAACG 1451 HCV-2603 2603 CCGCGUU CUGAUGAG X CGAA AGGACCA UGGUCCU C AACGCGG 146 HCV-2671 2671 CUUGAUG CUGAUGAG X CGAA ACCAGGC GCCUGGU A CAUCAAG 147 HCV-2675 2675 UGCCCUU CUGAUGAG X CGAA AUGUACC GGUACAU C AAGGGCA WO 99/55847 PCT/US99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

148 HCV-2690 2690 CCCCAGG CUGAUGAG X CGAA ACCAGCC GGCUGGU C CCUGGGG 149 HCV-2704 2704 CAGAGCA CUGAUGAG X CGAA AUGCCGC GCGGCAU A UGCUCUG 150 HCV-2709 2709 CCGUACA CUGAUGAG X CGAA AGCAUAU AUAUGCU C UGUACGG- 151 HCV-2713 2713 CACGCCG CUGAUGAG X CGAA ACAGAGC GCUCUGU A CGGCGUG 152 HCV-2738 2738 CCAGCAG CUGAUGAG X CGAA AGCAGGA UCCUGCU C CUGCUGG 153 HCV-2763 2763 AUGGCGU CUGAUGAG X CGAA AGCCCGU ACGGGCU U ACGCCAU 154 HCV-2764 2764 CAUGGCG CUGAUGAG X CGAA AAGCCCG CGGGCUU A CGCCAUG 155 HCV-2878 2878 GUAUUGU CUGAUGAG X CGAA ACCACCA UGGUGGU U ACAAUAC 156 HCV-2879 2879 AGUAUUG CUGAUGAG X CGAA AACCACC GGUGGUU A CAAUACU 157 HCV-2884 2884 GAUAAAG CUGAUGAG X CGAA AUUGUAA UUACAAU A CUUUAUC 158 HCV-2887 2887 GGUGAUA CUGAUGAG X CGAA AGUAUUG CAAUACU U UAUCACC 1591 HCV-2888 2888 UGGUGAU CUGAUGAG X CGAA AAGUAUU AAUACUU U AUCACCA 1601 HCV-2910 2910 ACGCACA CUGAUGAG X CGAA AUGCGCC GGCGCAU U UGUGCGU 1611 HCV-2911 2911 CACGCAC CUGAUGAG X CGAA AAUGCGC GCGCAUU U GUGCGUG 162 HCV-294 2924 GAGGGGG CUGAUGAG X CGAA ACCCACA UGUGGGU C CCCCCUC 163 HCV-2931 2931 ACAUUGA CUGAUGAG X CGAA AGGGGGG CCCCCCU C UCAAUGU 164 HCV-2933 2933 GGACAUU CUGAUGAG X CGAA AGAGGGG CCCCUCU C AAUGUCC 165 HCV-2939 2939 CCCCCCG CUGAUGAG X CGAA ACAUUGA UCAAUGU C CGGGGGG 166 HCV-2958 2958 AGGAUGA CUGAUGAG X CGAA AGCAUCG CGAUGCU A UCAUCCU 167 HCV-2960 2960 GGAGGAU CUGAUGAG X CGAA AUAGCAU AUGCUAU C AUCCUCC 1681 HCV-2963 2963 UGAGGAG CUGAUGAG X CGAA AUGAUAG CUAUCAU C CUCCUCA 1691 HCV-2966 2966 AUGUGAG CUGAUGAG X CGAA AGGAUGA UCAUCCU C CUCACAU 1701 HCV-2969 2969 CACAUGU CUGAUGAG X CGAA AGGAGGA UCCUCCU C ACAUGUG 171 HCV-3059 3059 UCGCAGU CUGAUGAG X CGAA AUGGCAG CUGCCAU A ACUGCGA 172 HCV-3138 3138 UGGACGU CUGAUGAG X CGAA AUGGCCU AGGCCAU U ACGUCCA 173 HCV-3139 3139 UUGGACG CUGAUGAG X CGAA AAUGGCC GGCCAUU A CGUCCAA 174 HCV-3143 3143 CCAUUUG CUGAUGAG X CGAA ACGUAAU AUUACGU C CAAAUGG 1751 HCV-3154 3154 CUUCAUG CUGAUGAG X CGAA AGGCCAU AUGGCCU U CAUGAAG 176 HCV-3155 3155 GCUUCAU CUGAUGAG X CGAA AAGGCCA UGGCCUU C AUGAAGC 177 HCV-3209 3209 AAUCCUG CUGAUGAG X CGAA AGCGGGG CCCCGCU A CAGGAUU WO 99/55847 PCT/US99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

178 HCV-3216 3216 UGGGCCC CUGAUGAG X CGAA AUCCUGU ACAGGAU U GGGCCCA 179 HCV-3233 3233 GGUCUCG CUGAUGAG X CGAA AGGCCCG CGGGCCU A CGAGACC 180 HCV-3242 3242 CCACCGC CUGAUGAG X CGAA AGGUCUC GAGACCU U GCGGUGG 181 HCV-3263 3263 AGAAGAC CUGAUGAG X CGAA ACGGGCU AGCCCGU C GUCUUCU 182 HCV-3266 3266 CAGAGAA CUGAUGAG X CGAA ACGACGG CCGUCGU C UUCUCUG 183 HCV-3268 3268 GUCAGAG CUGAUGAG X CGAA AGACGAC GUCGUCU U CUCUGAC 184 jHCV-3290 3290 AGGUGAU CUGAUGAG X CGAA AUCUUGG CCAAGAU C AUCACCU 185 HCV-3293 3293 CCCAGGU CUGAUGAG X CGAA AUGAUCU AGAUCAU C ACCUGGG 186 HCV-3329 3329 CCAAGAU CUGAUGAG X CGAA AUGUCCC GGGACAU C AUCUUGG 187 HCV-3332 3332 GUCCCAA CUGAUGAG X CGAA AUGAUGU ACAUCAU C UUGGGAC 188 HCV-3334 3334 CAGUCCC CUGAUGAG X CGAA AGAUGAU AUCAUCU U GGGACUG 189 HCV-3347 3347 GGGCGGA CUGAUGAG X CGAA ACGGGCA UGCCCGU C UCCGCCC 190 HCV-3349 3349 UCGGGCG CUGAUGAG X CGAA AGACGGG CCCGUCU C CGCCCGA 191 HCV-3371 3371 CCAGAAG CUGAUGAG X CGAA AUCUCCC GGGAGAU A CUUCUGG 192 HCV-3416 3416 GGGCAAG CUGAUGAG X CGAA AGUCGCC GGCGACU C CUUGCCC 193 HCV-3419 3419 UGGGGGC CUGAUGAG X CGAA AGGAGUC GACUCCU U GCCCCCA 194 HCV-3428 3428 AGGCCGU CUGAUGAG X CGAA AUGGGGG CCCCCAU C ACGGCCU 195 HCV-3482 3482 GGCCUGU CUGAUGAG X CGAA AGGCUAG CUAGCCU C ACAGGCC 196 HCV-3518 3518 CCACUUG CUGAUGAG X CGAA ACCUCCC GGGAGGU U CAAGUGG 197 HCV-3519 3519 ACCACUU CUGAUGAG X CGAA AACCUCC GGAGGUU C AAGUGGU 198 HCV-3527 3527 CGGUGGA CUGAUGAG X CGAA ACCACUU AAGUGGU U UCCACCG 199 HCV-3528 3528 GCGGUGG CUGAUGAG X CGAA AACCACU AGUGGUU U CCACCGC 200 HCV-3529 3529 UGCGGUG CUGAUGAG X CGAA AAACCAC GUGGUUU C CACCGCA 201 HCV-3576 3576 ACGGUCC CUGAUGAG X CGAA ACACACA UGUGUGU U GGACCGU 202 HCV-3601 3601 GGUCUUU CUGAUGAG X CGAA AGCCGGC GCCGGCU C AAAGACC 203 HCV-3611 3611 GGCCGGC CUGAUGAG X CGAA AGGGUCU AGACCCU A GCCGGCC 204 HCV-3684 3684 GCCCCGG CUGAUGAG X CGAA AGGCGCA UGCGCCU C CCGGGGC 205 HCV-3696 3696 GUAAGGG CUGAUGAG X CGAA ACGCGCC GGCGCGU U CCCUUAC 206 HCV-3697 3697 UGUAAGG CUGAUGAG X CGAA AACGCGC GCGCGUU C CCUUACA 207 HCV-3701 3701 AUGGUGU CUGAUGAG X CGAA AGGGAAC GUUCCCU U ACACCAU WO 99/55847 PCTIUS99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

208 HCV-3702 3702 CAUGGUG CUGAUGAG X CGAA AAGGGAA UUCCCUU A CACCAUG 209 HCV-3724 3724 GAGGUCC CUGAUGAG X CGAA AGCUACC GGUAGCU C GGACCUC 210 HCV-3731 3731 CCAGAUA CUGAUGAG X CGAA AGGUCCG CGGACCU C UAUCUGG 211 HCV-3733 3733 GACCAGA CUGAUGAG X CGAA AGAGGUC GACCUCU A UCUGGUC 212 HCV-3735 3735 GUGACCA CUGAUGAG X CGAA AUAGAGG CCUCUAU C UGGUCAC 213 HCV-3740 3740 GUCUCGU CUGAUGAG X CGAA ACCAGAU AUCUGGU C ACGAGAC 214 HCV-3761 3761 GCACCGG CUGAUGAG X CGAA AUGACGU ACGUCAU U CCGGUGC 215 HCV-3762 3762 CGCACCG CUGAUGAG X CGAA AAUGACG CGUCAUU C CGGUGCG 216 HCV-3786 3786 CUCCCCC CUGAUGAG X CGAA ACCGUCA UGACGGU C GGGGGAG 217 HCV-3797 3797 GGGACAG CUGAUGAG X CGAA AGGCUCC GGAGCCU A CUGUCCC 218 HCV-3802 3802 UCUGGGG CUGAUGAG X CGAA ACAGUAG CUACUGU C CCCCAGA 219 HCV-3835 3835 GCCACCC CUGAUGAG X CGAA AAGAGCC GGCUCUU C GGGUGGC 220 HCV-3851 3851 AAGGGCA CUGAUGAG X CGAA AGCAGUG CACUGCU C UGCCCUU 221 HCV-3858 3858 UGCCCCG CUGAUGAG X CGAA AGGGCAG CUGCCCU U CGGGGCA 222 HCV-3859 3859 GUGCCCC CUGAUGAG X CGAA AAGGGCA UGCCCUU C GGGGCAC 223 HCV-3872 3872 AGAUGCC CUGAUGAG X CGAA ACAGCGU ACGCUGU A GGCAUCU 224 HCV-3878 3878 CCCGGAA CUGAUGAG X CGAA AUGCCUA UAGGCAU C UUCCGGG 225 HCV-3880 3880 AGCCCGG CUGAUGAG X CGAA AGAUGCC GGCAUCU U CCGGGCU 226 HCV-3881 3881 CAGCCCG CUGAUGAG X CGAA AAGAUGC GCAUCUU C CGGGCUG 227 HCV-3908 3908 CCUUCGC CUGAUGAG X CGAA ACCCCCC GGGGGGU U GCGAAGG 2281 HCV-4056 40,56 GGCACUU CUGAUGAG X CGAA AGUGCUC GAGCACU A AAGUGCC 2291 HCV-4072 4072 GGCUGCG CUGAUJGAG X CGAA ACGCAGC GCUGCGU A CGCAGCC 230 HCV-4087 4087 UACCUUG CUGAUGAG X CGAA ACCCUUG CAAGGGU A CAAGGUA 231 HCV-4115 4115 UGGCGGC CUGAUGAG X CGAA ACAGAUG CAUCUGU U GCCGCCA 232 HCV-4175 4175 CAGUUCU CUGAUGAG X CGAA AUGUUGG CCAACAU C AGAACUG 233 HCV-4187 4187 UGGUCCU CUGAUGAG X CGAA ACCCCAG CUGGGGU A AGGACCA 234 HCV-4228 4228 CUUACCA CUGAUGAG X CGAA AGGUGGA UCCACCU A UGGUAAG 2351 HCV-4233 4233 AGGAACU CUGAUGAG X CGAA ACCAUAG CUAUGGU A AGUUCCU 236 HiCV-4237 4237 GGCAAGG CUGAUGAG X CGAA ACUUACC GGUAAGU U CCUUGCC 237 HCV-4238 4238 CGGCAAG CUGAUGAG X CGAA AACUUAC GUAAGUU C CUUGCCG WO 99/55847 PCTIUS99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

238 HCV-4241 4241 CGUCGGC CtJGAUGAG X CGAA AGGAACU AGUUJCCU U GCCGACG 239 HCV-4280 4280 CACAUAU CtJGAUGAG X CGAA AUGAUAU AUAUCAU A AUAUGUG 240 HCV-4283 4283 CAUCACA CUGAUGAG X CGAA AUUAUGA UCAUAAU A UGUGAUG 241 HCV-4 337 4337 GGUCCAG CUGAUGAG X CGAA ACUGUGC GCACAGU C CUGGACC 242 HCV-4370 4370 GCACGAC CUGAUGAG X CGAA AGCCGCG CGCGGCU C GUCGUGC 243 HCV-4373 4373 CGAGCAC CUGAUGAG X CGAA ACGAGCC GGCUCGU C GUGCUCG 244 HCV-4379 4379 CGGUGGC CUGAUGAG X CGAA AGCACGA UCGUGCU C GCCACCG 245 HCV-4425 4425 UCCUCAA CUGAUGAG X CGAA AUUUGGG CCCAAAU A UUGAGGA 246 HCV-4444 4444 AGUGUUG CUGAUGAG X CGAA ACAGAGC GCUCUGU C CAACACJ 247 HCV-4460 4460 AGAAGGG CUGAUGAG X CGAA AUCUCUC GAGAGAU C CCCUUCU 248 HCV-4481 4481 CGAGGGG CUGAUGAG X CGAA AtJGGCCU AGGCCAU C CCCCUCG 2491 HCV-4487 4487 UGGCCUC CUGAUGAG X CGAA AGGGGGA UCCCCCU C GAGGCCA 250 1HCV-4496 4496 CCCCCUU CUGAUGAG X CGAA AUGGCCU AGGCCAU C AAGGGGG 251 HCV-4528 4528 CUUCUUG CUGAUGAG X CGAA AGUGGCA UGCCACU C CAAGAAG 252 HCV-4577 4577 CGGCAUU CUGAUGAG X CGAA AUUCCGA UCGGAAU C AAUGCCG- 253 H-CV-4586 4586 AAUACGC CUGAUGAG X CGAA ACGGCAU AUGCCGU A GCGUAUU 254 HCV-4591 4591 CCGGUAA CUGAUGAG X CGAA ACGCUAC GUAGCGU A UUACCGG 2551 HCV-4593 4593 CCCCGGU CUGAUGAG X CGAA AUACGCU AGCGUAU U ACCGGGG 2561 HCV-4594 4594 ACCCCGG CUGAUGAG X CGAA AAUACGC GCGUAUU A CCGGGGU 2571 HCV-4616 4616 UCGGUAU CUGAUGAG X CGAA ACGGACA UGUCCGU C AUACCGA 258 HCV-4619 4619 UAGUCGG CUGAUGAG X CGAA AUGACGG CCGUCAU A CCGACUA 259 HCV-4626 4626 UCUCCGC CUGAUGAG X CGAA AGUCGGU ACCGACU A GCGGAGA 260 HCV-4672 4672 ACCGGUG CUGAUGAG X CGAA AGCCCGU ACGGGCU A CACCGGU 261 HCV-4697 4697 UGCAGUC CUGAUGAG X CGAA AUCACOG CGGUGAU C GACUGCA 262 HCV-4789 4789 UGAGCGC CUGAUGAG X CGAA ACACCGC GCGGUGU C GCGCUCA 263 HCV-4795 4795 CCGUUGU CUGAUGAG X CGAA AGCGCGA UCGCGCU C ACAACGG 264 HCV-4920 4920 UCAUACC CUGAUGAG X CGAA AGCACAG CUGUGCU U GGUAUGA 265 HCV-4924 4924 GAGCUCA CUGAUGAG X CGAA ACCAAGC GCUUGGU A UGAGCUC 266 HCV-4 931 4931 CGGGCGU CUGAUGAG X CGAA AGCUCAU AUGAGCU C ACGCCCG 27HCV-4947 4947 CUGACUG CUGAUGAG X CGAA AGUCUCA IUGAGACU A CAGUCAG WO 99/55847 PCT/US99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

268 HCV-4952 4952 GCAACCJ CUGAUGAG X CGAA ACUGUAG CUACAGU C AGGUUGC 269 HCV-4957 4957 AGCCCGC- CUGAUGAG X CGAA ACCUGAC GUCAGGU U GCGGGCU 2701 HCV-4 965 4965 UUCAGGU CUGAUGAG X CGAA AGCCCGC GCGGGCU U ACCUGAA 271 HCV-4966 4966 AUUCAGG CUGAUGAG X CGAA AAGCCCG CGGGCUU A CCUGAAU 272 HCV-4974 4974 CCUGGUG CUGAUGAG X CGAA AUUCAGG CCUGAAU A CACCAGG 273 HCV-4 984 4984 GACGGGC CUGAUGAG X CGAA ACCCUGG CCAGGGU U GCCCGUC 274 HCV-4991 4991 CCUGGCA CUGAUGAG X CGAA ACGGGCA UGCCCGU C UGCCAGG 275 HCV-5004 5004 AACUCCA CUGAUGAG X CGAA AUGGUCC GGACCAU C UGGAGUU 276 HCV-5102 5102 GGUAUGC CUGAUGAG X CGAA ACCAGGU ACCUGGU A GCAUACC 277 HCV-5107 5107 GGCUUGG CUGAUGAG X CGAA AUGCUAC GUAGCAU A CCAAGCC 278 HCV-5133 5133 GGAGCCU CUGAUGAG X CGAA AGCCCUG CAGGGCU C AGGCUCC 279 HCV-5218 5218 UAGCCUA CUGAUGAG X CGAA ACAGCAG CUGCUGU A UAGGCUA 280 HCV-5220 5220 CCUAGCC CUGAUGAG X CGAA AUACAGC GCUGUAU A GGCUAGG 281 HCV-5306 5306 UAGUGAC CUGAUGAG X CGAA ACCUCCA UGGAGGU C GUCACUA 282 HCV-5309 5309 UGCUAGU CUGAUGAG X CGAA ACGACCU AGGUCGU C ACUAGCA 283 HCV-5313 5313 CAGGUGC CUGAUGAG X CGAA AGUGACG CGUCACU A GCACCUG 284 HCV-5330 5330 CUCCGCC CUGAUGAG X CGAA ACCAGCA UGCUGGU A GGCGGAG 285 HCV-5339 5339 CUGCAAG CUGAUGAG X CGAA ACUCCGC GCGGAGU C CUUGCAG 286 HCV-5342 5342 GAGCUGC CUGAUGAG X CGAA AGGACUC GAGUCCU U GCAGCUC 287j HCV-5359 5359 CAGGCAA CUGAUGAG X CGAA AUGCGGC GCCGCAU A UUGCCUG 288 HCV-5361 5361 GUCAGGC CUGAUGAG X CGAA AUAUGCG CGCAUAU U GCCUGAC 289 HCV-5376 5376 ACCACAC CUGAUGAG X CGAA ACCGGUU AACCGGU A GUGUGGU 290 HCV-5399 5399 ACAAAAU CUGAUGAG X CGAA AUCCUAC GUAGGAU C AUUUUGU 2911 HCV-5423 5423 CGGGAAC CUGAUGAG X CGAA ACAGCCG CGGCUGU U GUUCCCG 292 1HCV-5426 5426 UGUCGGG CUGAUGAG X CGAA ACAACAG CUGUUGU U CCCGACA 293 1HCV-5427 5427 CUGUCGG CUGAUGAG X CGAA AACAACA UGUUGUU C CCGACAG 294 HCV-5524 5524 CUGCUUG CUGAUGAG X CGAA ACUGCUC GAGCAGU U CAAGCAG 295 HCV-5525 5525 UCUGCUU CUGAUGAG X CGAA AACUGCU AGCAGUU C AAGCAGA 296 HCV-5583 5583 ACCACGG CUGAUGAG X CGAA AGCAGCG CGCUGCU C CCGUGGU 297 HV-556 59 CCACCUG CUGAUGAG X CGAA ACUCCAC GUGGAGU C CAGGUGG WO 99/55847 PCTIUS99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

298 H-CV-5612 5612 AGGCCUC CUGAUGAG X CGAA AGGGCCC GGGCCCU U GAGGCCU 299 HCV-5620 5620 UGCCCAG CUGAUGAG X CGAA AGGCCUC GAGGCCU U CUGGGCA 300 HCV-5621 5621 UUGCCCA CUGAUGAG X CGAA AAGGCCU AGGCCUU C UGGGCAA 301 HCV-5674 5674 AGUGGAU CUGAUGAG X CGAA AGCCUGC GCAGGCU U AUCCACU 302 HCV-5675 5675 GAGUGGA CUGAUGAG X CGAA AAGCCUG CAGGCUU A UCCACUC 303 HCV-5767 5767 GAUGUUG CUGAUGAG X CGAA ACAGGAG CUCCUGU U CAACAUC 304 HCV-5768 5768 AGAUGUU CUGAUGAG X CGAA AACAGGA UCCUGUU C AACAUCU 305 HCV-5801 5801 GAGGAGC CUGAUGAG X CGAA AGUUGAG CUCAACU C GCUCCUC 306 HCV-5805 5805 CUGGGAG CUGAUGAG X CGAA AGCGAGU ACUCGCU C CUCCCAG 307 HCV-5821 5821 GAAGGCC CUGAUGAG X CGAA AAGCAGC GCUGCUU C GGCCUUC 308 HCV-5827 5827 GCCCACG CUGAUGAG X CGAA AGGCCGA UCGGCCU U CGUGGGC 309 HCV-5828 5828 CGCCCAC CUGAUGAG X CGAA AAGGCCG CGGCCUU C GUGGGCG 310 HCV-5843 5843 CACCGGC CUGAUGAG X CGAA AUGCCGG CCGGCAU U GCCGGUG 311 HCV-5858 5858 UGCUGCC CUGAUGAG X CGAA AUGGCCG CGGCCAU U GGCAGCA 312 HCV-5867 5867 CAAGGCC CUGAUGAG X CGAA AUGCUGC GCAGCAU A GGCCUUG 313 HCV-5873 5873 CCUUCCC CUGAUGAG X CGAA AGGCCUA UAGGCCU U GGGAAGG 314 HCV-5905 5905 CGCUCCA CUGAUGAG X CGAA AGCCCGC GCGGGCU A UGGAGCG 315 HCV-5930 5930 AAGCCAC CUGAUGAG X CGAA AGUGCAC GUGCACU C GUGGCUU 316 HCV-5937 5937 ACCUUAA CUGAUGAG X CGAA AGCCACG CGUGGCU U UUAAGGU 317 H-CV-5938 5938 GACCUUA CUGAUGAG X CGAA AAGCCAC GUGGCUU U UAAGGUC 318 HCV-5939 5939 UGACCUU CUGAUGAG X CGAA AAAGCCA UGGCUUU U AAGGUCA 319 HCV-5940 5940 AUGACCU CUGAUGAG X CGAA AAAAGCC GGCUUUU A AGGUCAU 320 HCV-5945 5945 *CGCUCAU CUGAUGAG X CGAA ACCUUAA UUAAGGU C AUGAGCG 321 HCV-5965 5965 CUCGGCG CUGAUGAG X CGAA AGGGCGC GCGCCCU C CGCCGAG 322 HCV-5981 5981 GCAAGUU CUGAUGAG X CGAA ACCAGGU ACCUGGU U AACUUGC 323 HCV-5982 5982 AGCAAGU CUGAUGAG X CGAA AACCAGG CCUGGUU A ACUUGCU 324 HCV-5990 5990 UGGCAGG CUGAUGAG X CGAA AGCAAGU ACUUGCU C CCUGCCA 325 HCV-6004 6004 GCCGGGG CUGAUGAG X CGAA AGAGGAU AUCCUCU C CCCCGGC 326 HCV-6020 6020 CCCCGAC CUGAUGAG X CGAA ACCAGGG CCCUGGU C GUCGGGG 327 HV-6023 6023T CGACCCC CUGAUGAG X CGAA ACGACCA UGGUCGU C GGGGUCG WO 99/55847 PCTIUS99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

328 HCV-6029 6029 CACACAC CUGAUGAG X CGAA ACCCCGA UCGGGGU C GUGUGUG 329 HCV-6044 6044 GACGCAG CUGAUGAG X CGAA AUUGCUG CAGCAAU C CUGCGUC 330 HCV-6051 6051 ACGUGCC CUGAUGAG X CGAA ACGCAGG CCUGCGU C GGCACGU 331 HCV-6106 6106 CGAAGCG CUGAUGAG X CGAA ACGCUAU AUAGCGU U CGCUUCG 332 H-CV-6107 6107 GCGAAGC CUGAUGAG X CGAA AACGCUA UAGCGUU C GCUUCGC 333 HCV-6111 6111 CCCCGCG CUGAUGAG X CGAA AGCGAAC GUUCGCU U CGCGGGG 334 H-CV-6413 6413 UUUGCAU CUGAUGAG X CGAA AUGCCGU ACGGCAU C AUGCAAA 335 HCV-6574 6574 CCUGGAA CUGAUGAG X CGAA AGUUCGG CCGAACU A UUCCAGG 336 HCV-6576 6576 GCCCUGG CUGAUGAG X CGAA AUAGUUC GAACUAU U CCAGGGC 337 HCV-6577 6577 CGCCCUG CUGAUGAG X CGAA AAUAGUU AACUAUU C CAGGGCG 338 HCV-6637 6637 GUAGUGG CUGAUGAG X CGAA AGUCCCC GGGGACU U CCACUAC 339 HCV-6638 6638 CGUAGUG CUGAUGAG X CGAA AAGUCCC GGGACUU C CACUACG 340 HCV-6643 6643 CGUCACG CUGAUGAG X CGAA AGUGGAA UUCCACU A CGUGACG' 341 HCV-6671 6671 GGCAUUU CUGAUGAG X CGAA ACGUUGU ACAACGU A AAAUGCC 342 HCV-6703 6703 GGUGAAG CUGAUGAG X CGAA AUUCGGG CCCGAAU U CUUCACC 343 HCV-6704 6704 CGGUGAA CUGAUGAG X CGAA AAUUCGG CCGAAUU C UUCACCG 344 HCV-6706 6706 UUCGGUG CUGAUGAG X CGAA AGAAUUC GAAUUCU U CACCGAA 345 HCV-6707 6707 AUUCGGU CUGAUGAG X CGAA AAGAAUU AAUUCUU C ACCGAAU 346 HCV-6715 6715 CCCGUCC CUGAUGAG X CGAA AUUCGGU ACCGAAU U GGACGGG 347 HCV-6730 6730 CCUGUGC CUGAUGAG X CGAA ACCGCAC GUGCGGU U GCACAGG 348 HCV-6739 6739 CGGAGCG CUGAUGAG X CGAA ACCUGUG CACAGGU A CGCUCCG 349 HCV-6744 6744 CACGCCG CUGAUGAG X CGAA AGCGUAC GUACGCU C CGGCGUG 350 HCV- 6759 6759 CGUAGGA CUGAUGAG X CGAA AGGUCUG CAGACCU C UCCUACG 351 HCV-6761 6761 CCCGUAG CUGAUGAG X CGAA AGAGGUC GACCUCU C CUACGGG 352 HCV-6764 6764 CCUCCCG CUGAUGAG X CGAA AGGAGAG CUCUCCU A CGGGAGG 353 HCV-6776 6776 GGAAUGU CUGAUGAG X CGAA ACAUCCU AGGAUGU C ACAUUCC 354 HCV-6782 6782 CGACCUG CUGAUGAG X CGAA AAUGUGA UCACAUU C CAGGUCG 355 HCV-6788 6788 UGAGCCC CUGAUGAG X CGAA ACCUGGA UCCAGGU C GGGCUCA 356 HCV-6794 6794 AUUGGUU CUGAUGAG X CGAA AGCCCGA UCGGGCU C AACCAAU 357 HCV-6802 6802 AACCAGG CUGAUGAG X CGAA AUUGGUU AACCAAU A CCUGGUU WO 99/55847 PCTIUS99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

358 H-CV-6809 6809 GUJGACCC CEJGAUGAG X CGAA ACCAGGU ACCUGGU U GGGUCAC 359 HCV-6814 6814 GAGCUGU CUGAUGAG X CGAA ACCCAAC GUUGGGU C ACAGCUC 360 HCV-6821 6821 CGCAUGG CUGAUGAG X CGAA AGCUGUG CACAGCU C CCAUGCG 361 HCV-6906 6906 GCCAGCC CUGAUGAG X CGAA ACGUUUA UAAACGU A GGCUGGC 362 HCV-6922 6922 GGGGGGA CUGAUGAG X CGAA ACCCCCU AGGGGGU C UCCCCCC 363 HCV-6924 6924 GAGGGGG CUGAUGAG X CGAA AGACCCC GGGGUCU C CCCCCUC 364 HCV-6931 6931 GGCCAAG CUGAUGAG X CGAA AGGGGGG CCCCCCU C CUUGGCC 365 HCV-6934 6934 GCUGGCC CUGAUGAG X CGAA AGGAGGG CCCUCCU U GGCCAGC 366 HCV-6943 6943 AGCUGAA CUGAUGAG X CGAA AGCUGGC GCCAGCU C UUCAGCU 367 HCV-6958 6958 CGCAGAC CUGAUGAG X CGAA AUUGGCU AGCCAAU U GUCUGCG 368 HCV-6961 6961 AGGCGCA CUGAUGAG X CGAA ACAAUUG CAAUUGU C UGCGCCU 369 HCV-7034 7034 GCCACAG CUGAUGAG X CGAA AGGUUGG CCAACCU C CUGUGGC 3701 HCV-7118 7118 CCGCUCG CUGAUGAG X CGAA AGCGGGU ACCCGCU U CGAGC.GG 371 HCV-7119 7119 UCCGCUC CUGAUGAG X CGAA AAGCGGG CCCGCUU C GAGCGGA 372 HCV-7145 7145 CAACGGA CUGAUGAG X CGAA ACUUCCC GGGAAGU A UCCGUUG 373 HCV-7195 7 195 UAUGGGC CUGAUGAG X CGAA ACGCGGG CCCGCGU U GCCCAUA 374 HCV-7202 7202 GUGCCCA CUGAUGAG X CGAA AUGGGCA UGCCCAU A UGGGCAC 3751 HCV-7218 7218 GGGUUGU CUGAUGAG X CGAA AUCCGGG CCCGGAU U ACAACCC 3761 HCV-7219 7219 AGGGUUG CUGAUGAG X CGAA AAUCCGG CCGGAUU A CAACCCU 3771 HCV-7234 7234 GGACUCU CUGAUGAG X CGAA ACAGUGG CCACUGU U AGAGUCC 378 HCV-7235 7235 AGGACUC CUGAUGAG X CGAA AACAGUG CACUGUU A GAGUCCU 379 HCV-7251 7251 UAGUCCG CUGAUGAG X CGAA ACUUUUC GAAAAGU C CGGACUA 380 HCV-7258 7258 AGGGACG CUGAUGAG X CGAA AGUCCGG CCGGACU A CGUCCCU 381 HCV-7262 7262 CCGGAGG CUGAUGAG X CGAA ACGUAGU ACUACGU C CCUCCGG 382 HCV-7266 7266 ACCGCCG CUGAUGAG X CGAA AGGGACG CGUCCCU C CGGCGGU 383 HCV-7288 7288 AGGCGGC CUGAUGAG X CGAA AUGGGCA UGCCCAU U GCCGCCU 384 HCV-7296 7296 CCCGUGG CUGAUGAG X CGAA AGGCGGC GCCGCCU A CCACGGG 385 HCV-7354 7354 CACGGUG CUGAUGAG X CGAA ACUCUGU ACAGAGU C CACCGUG 386 HCV-7386 7386 GUCUUAG CUGAUGAG X CGAA AGCCAGC GCUGGCU A CUAAGAC 37HV-7389 7389 AAAGUCU CUGAUGAG X CGAA AGUAGCC GGCUACU A AGACUUU WO 99/55847 PCTIUS99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

388 HCV-7395 7395 CUGCCGA CUGAUGAG X CGAA AGUCUUA UAAGACU U UCGGCAG 389 HCV-7396 7396 GCUGCCG CUGAUGAG X CGAA AAGUCUU AAGACUU U CGGCAGC 390 HCV-7397 7397 AGCUGCC CUGAUGAG X CGAA AAAGUCU AGACUUU C GGCAGCU 391 HCV-7411 7411 GGCCGAC CUGAUGAG X CGAA AUCCGGA UCCGGAU C GUCGGCC 392 HCV-7414 7414 AACGGCC CUGAUGAG X CGAA ACGAUCC GGAUCGU C GGCCGUU 393 HCV-7421 7421 CGCUGUC CUGAUGAG X CGAA ACGGCCG CGGCCGU U GACAGCG 394 HCV-7498 7498 CAUGGAG CUGAUGAG X CGAA AGUACGA UCGUACU C CUCCAUG 395 HCV-7501 7501 GGGCAUG CUGAUGAG X CGAA AGGAGUA UACUCCU C CAUGCCC 396 HCV-7514 7514 CCCCCUC CUGAUGAG X CGAA AGGGGGG CCCCCCU U GAGGGGG 397 HCV-7539 7539 UCGCUGA CUGAUGAG X CGAA AUCAGGG CCCUGAU C UCAGCGA 398 HCV-7541 7541 CGUCGCU CUGAUGAG X CGAA AGAUCAG CUGAUCU C AGCGACG 399 HCV-7552 7552 AGACCAA CUGAUGAG X CGAA ACCCGUC GACGGGU C UUGGUCU 400 HCV-7554 7554 GUAGACC CUGAUGAG X CGAA AGACCCG CGGGUCU U GGUCUAC 401 HCV-7558 7558 CACGGUA CUGAUGAG X CGAA ACCAAGA UCUUGGU C UACCGUG 402 HCV-7560 7560 CUCACGG CUGAUGAG X CGAA AGACCAA UUGGUCU A CCGUGAG 403j HCV-7589 7589 AGCAGAC CUGAUGAG X CGAA AUGUCGU ACGACAU C GUCUGCU 404 HCV-7592 7592 AGCAGCA CUGAUGAG X CGAA ACGAUGU ACAUCGU C UGCUGCU 405 HCV-7600 7600 GGACAUU CUGAUGAG X CGAA AGCAGCA UGCUGCU C AAUGUCC 406 HCV-7606 7606 UGUGUAG CUGAUGAG X CGAA ACAUUGA UCAAUGU C CUACACA 407 HCV-7667 7667 ACGCGUU CUGAUGAG X CGAA AUGGGCA UGCCCAU C AACGCGU 408 HCV-7723 7723 ACUGCGG CUGAUGAG X CGAA AUGUUGU ACAACAU C CCGCAGU 409 HCV-7775 7775 CGUCCAG CUGAUGAG X CGAA ACUUGCA UGCAAGU C CUGGACG 410 HCV-7789 7789 GtJCCCGG CUGAUGAG X CGAA AGUGGUC GACCACU A CCGGGAC 411 HCV-7839 7839 AGAAGUU CUGAUGAG X CGAA AGCCUUA UAAGGCU A AACUUCU 412 HCV-7847 7847 CUACGGA CUGAUGAG X CGAA AGAAGUU AACUUCU A UCCGUAG 413 HCV-7849 7849 UUCUACG CUGAUGAG X CGAA AUAGAAG CUUCUAU C CGUAGAA 414 HCV-7853 7853 CUUCUUC CUGAUGAG X CGAA ACGGAUA UAUCCGU A GAAGAAG 4151 HCV-7894 7894 AAAUUUA CUGAUGAG X CGAA AUUUGGC GCCAAAU C UAAAUUU 416 HCV-7896 7896 CCAAAUU CUGAUGAG X CGAA AGAUUUG CAAAUCU A AAUUUGG 417 HCV-7900 17900 jAUAGCCA CUGAUGAG X CGAA AUUUAGA IUCUAAAU U UGGCUAUJ WO 99/55847 PTU9192 PCT/US99/09027 No. Name Nt. Hammerhead Ribozyine Substrate Pos.

418 HCV-7901 7901 CAUAGCC CUGAUGAG X CGAA AAUUUAG CUAAAUU U GGCUAUG 419 HCV-7906 7906 UGCCCCA CUGAUGAG X CGAA AGCCAAA UUUGGCU A UGGGGCA 420 HCV-7955 7955 CGGAGCG CUGAUGAG X CGAA AUGUGGU ACCACAU C CGCUCCG 421 HCV-7960 7960 CCACACG CUGAUGAG X CGAA AGCGGAU AUCCGCU C CGUGUGG 422 HCV-8075 8075 AUACGAU CUGAUGAG X CGAA AGGCGAG CUCGCCU U AUCGUAU 423 HCV-8076 8076 AAUACGA CUGAUGAG X CGAA AAGGCGA UCGCCUU A UCGUAUU 424 HCV-8078 8078 GGAAUAC CUGAUGAG X CGAA AUAAGGC GCCUUAU C GUAUUCC 425 HCV-8170 8170 GAAUCCG CUGAUGAG X CGAA ACGAGGA UCCUCGU A CGGAUUC 426 HCV-8176 8176 GUACUGG CUGAUGAG X CGAA AUCCGUA UACGGAU U CCAGUAC 427 HCV-8182 8182 AGGAGAG CUGAUGAG X CGAA ACUGGAA UUCCAGU A CUCUCCU 428 HCV-8187 8187 UGCCCAG CUGAUGAG X CGAA AGAGUAC GUACUCU C CUGGGCA 429 HCV-8201 8201 GGAACUC CUGAUGAG X CGAA ACCCGCU AGCGGGU U GAGUUJCC 430 HCV-8206 8206 CACCAGG CUGAUGAG X CGAA ACUCAAC GUUGAGU U CCUGGUG 431 HCV-8207 8207 UCACCAG CUGAUGAG X CGAA AACUCAA UUGAGUU C CUGGUGA 432 HCV-8227 8227 UUUCUUU CUGAUGAG X CGAA AUUUCCA UGGAAAU C AAAGAAA 433 HCV-8357 8357 GCGACUU CUGAUGAG X CGAA AUGGCCU AGGCCAU A AAGUCGC 434 HCV-8362 8362 CGUGAGC CUGAUGAG X CGAA ACUUUAU AUAAAGU C GCUCACG 435 HCV-8366 8366 GCUCCGU CUGAUGAG X CGAA AGCGACU AGUCGCU C ACGGAGC 436 HCV-8378 8378 CGAUGUA CUGAUGAG X CGAA AGCCGCU AGCGGCU C UACAUCG 437 jHCV-8380 8380 CCCGAUG CUGAUGAG X CGAA AGAGCCG CGGCUCU A CAUCGGG 438 HCV-8384 8384 GGCCCCC CUGAUGAG X CGAA AUGUAGA UCUACAU C GGGGGCC 439 HCV-8424 8424 CGGCGAU CUGAUGAG X CGAA ACCGCAG CUGCGGU U AUCGCCG 440 HCV-8425 8425 CCGGCGA CUGAUGAG X CGAA AACCGCA UGCGGUU A UCGCCGG 441 HCV-8427 8427 CACCGGC CUGAUGAG X CGAA AUAACCG CGGUUAU C GCCGGUG 442 HCV-8460 8460 CCGCAGC CUGAUGAG X CGAA AGUCGUC GACGACU A GCUGCGG 443 HCV-8508 8508 GCAGCUC CUGAUGAG X CGAA ACAGGCC GGCCUGU C GAGCUGC 444 HCV-8522 8522 AGUCCUG CUGAUGAG X CGAA AGCUUUG CAAAGCU C CAGGACU 445 HCV-8540 8540 CGUUCAC CUGAUGAG X CGAA AGCAUCG CGAUGCU C GUGAACG 446 HCV-8558 8558 UAACGAC CUGAUGAG X CGAA AGGUCGU ACGACCU U GUCGUUA 447 HCV-8561 8561 AGAUAAC CUGAUGAG X CGAA ACAAGGU ACCUUGU C GUUAUCU WO 99/55847 PCT/US99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

448 HCV-8564 8564 CACAGAU CUGAUGAG X CGAA ACGACAA UUGUCGU U AUCUGUG 449 HCV-8638 8638 GGGGGCA CUGAUGAG X CGAA AGUACCU AGGUACU C UGCCCCC 450 HCV-8671 8671 CAAGUCG CUGAUGAG X CGAA AUUCUGG CCAGAAU A CGACUUG 451 HCV-8698 8698 GUUGGAG CUGAUGAG X CGAA AGCAUGA UCAUGCU C CUCCAAC 452 HCV-8701 8701 CACGUUG CUGAUGAG X CGAA AGGAGCA UGCUCCU C CAACGUG 453 HCV-8728 8728 UUUGCCG CUGAUGAG X CGAA AUGCGUC GACGCAU C CGGCAAA 454 HCV-8774 8774 CCCGUGC CUGAUGAG X CGAA AGGGGGG CCCCCCU U GCACGGG 455 HCV-8842 8842 GGGCGCA CUGAUGAG X CGAA ACAUGAU AUCAUGU A UGCGCCC 456 HCV-8854 8854 UGCCCAU CUGAUGAG X CGAA AGGUGGG CCCACCU U AUGGGCA 457 HCV-8855 8855 UUGCCCA CUGAUGAG X CGAA AAGGUGG CCACCUU A UGGGCAA 458 HCV-8871 8871 GUCAUCA CUGAUGAG X CGAA AAUCAUC GAUGAUU U UGAUGAC 459 HCV-8880 8880 AAGAAGU CUGAUGAG X CGAA AGUCAUC GAUGACU C ACUUCUU 460 HCV-8931 8931 AUCUGAC CUGAUGAG X CGAA AUCCAGG CCUGGAU U GUCAGAU 461 HiCV-8934 8934 UAGAUCU CUGAUGAG X CGAA ACAAUCC GGAUUGU C AGAUCUA 462 HCV-8939 8939 CCCCGUA CUGAUGAG X CGAA AUCUGAC GUCAGAU C UACGGGG 463 HCV-8941 8941 GGCCCCG CUGAUGAG X CGAA AGAUCUG CAGAUCU A CGGGGCC 464 HCV-9065 9065 GUUUCCU CUGAUGAG X CGAA AGGCAUG CAUGCCU C AGGAAAC 465 HCV-9074 9074 GUACCCC CUGAUGAG X CGAA AGUUUCC GGAAACU U GGGGUAC 466 HCV-9080 9080 AGGGCGG CUGAUGAG X CGAA ACCCCAA UUGGGGU A CCGCCCU 467 HCV-9088 9088 GACUCGC CUGAUGAG X CGAA AGGGCGG CCGCCCU U GCGAGUC 468 HCV-9095 9095 GUCUCCA CUGAUGAG X CGAA ACUCGCA UGCGAGU C UGGAGAC 469 HCV-9119 9119 UAGCGCG CUGAUGAG X CGAA ACACUUC GAAGUGU C CGCGCUA 470 HCV-9126 9126 AGUAGCC CUGAUGAG X CGAA AGCGCGG CCGCGCU A GGCUACU 471 HCV-9131 9131 GGGACAG CUGAUGAG X CGAA AGCCUAG CUAGGCU A CUGUCCC 472 HiCV-9136 9136 CCCUUGG CUGAUGAG X CGAA ACAGUAG CUACUGU C CCAAGGG 473 HCV-9226 9226 CAGCUGG CUGAUGAG X CGAA ACGCGGC GCCGCGU C CCAGCUG 474 HCV-9238 9238 GCUGGAC CUGAUGAG X CGAA AGUCCAG CUGGACU U GUCCAGC 475j HCV-9241 9241 CCAGCUG CUGAUGAG X CGAA ACAAGUC GACUUGU C CAGCUGG 476 HCV-9250 9250 AGCAACG CUGAUGAG X CGAA ACCAGCU AGCUGGU U CGUUGCU 477 HCV-9251925 CAGCAAC CUGAUGAG X CGAA AACCAGC 11GCUGGUU C GUUGCUG WO 99/55847 PCT/US99/09027 No. Name Nt. Hammerhead Ribozyme Substrate Pos.

478 HCV-9254 9254 AACCAGC CUGAU2GAG X CGAA ACGAACC GGUUCGU U GCUGGUU 479 HCV-9278 9278 EGUGAUA CUGAUGAG X CGAA AUGUCUC GAGACAU A rJAUCACA 480 HCV-9280 9280 GCUGUGA CUGAUGAG X CGAA AUAUGUC GACAUAU A UCACAGC 481 HCV-9282 9282 AGGCUGU CUGAUGAG X CGAA AUAUAUG CAUAUAU C ACAGCCU 482 HCV-9292 9292 GGCACGA CUGAUGAG X CGAA ACAGGCU AGCCUGU C UCGUGCC 483 HCV-9326 9326 GUAGGAG CUGAUGAG X CGAA AGGCACC GGUGCCU A CUCCUAC 484 HCV-9329 9329 AAAGUAG CUGAUGAG X CGAA AGUAGGC GCCUACU C CUACUUU 485 HCV-9332 9332 CGGAAAG CUGAtJGAG X CGAA AGGAGUA UACUCCU A CUUUCCG 4861 HCV-9335 9335 CUACGGA CUGAUGAG X CGAA AGUAGGA UCCUACU U UCCGUAG 487 HCV-9336 9336 CCUACGG CUGAUGAG X CGAA AAGUAGG CCUACUU U CCGUAGG 488 HCV-9337 9337 CCCEJACG CUGAUGAG X CGAA AAAGUAG CUACUUU C CGUAGGG 489 HCV-9341 9341 CUACCCC CUGAUGAG X CGAA ACGGAAA UUUCCGU A GGGGUAG 490 HCV-9347 9347 AGAUGCC CUGAUGAG X CGAA ACCCCUA UAGGGGU A GGCAUCU 491 HCV-9353 9353 GCAGGUA CUGAUGAG X CGAA AUGCCUA UAGGCAU C UACCUGC 492 HCV-9355 9355 GAGCAGG CUGAUGAG X CGAA AGAUGCC GGCAUCU A CCUGCUC 493 HCV-9362 9362 GGUUGGG CUGAUGAG X CGAA AGCAGGU ACCUGCU C CCCAACC 494 HCV-9385 9385 GAGUGAU CUGAUGAG X CGAA AGCUCCC GGGAGCU A AUCACUC 4951 HCV-9388 9388 CtJGGAGU CUGAUGAG X CGAA AUUAGCU AGCUAAU C ACUCCAG 496 HCV-9392 9392 UGGCCUG CUGAUGAG X CGAA AGUGAUU AAUCACU C CAGGCCA 497 HCV-9402 r9402 GAUGGCC CUGAUGAG X CGAA AUUGGCC GGCCAAU A GGCCAUC Where represents stem H region of a H14 ribozyme (Hertel et al., 3252). The length of stem II may be 2 base-pairs.

1992 Nucleic Acids Res. WO 99/55847 PCTIUS99/09027 67 Table VI: Additional HCV Hammerhead (B31) Ribozyme and Target Sequence Pos. Ribozyme Substrate 14 CGCCCCC CUGAUGAG X CGAA AUCGGGG CCCCGAU U GGGGGCG 34 AGUGAUC CUGAUGAG X CGAA AUGGUGG ICCACCAU A GAUCACU 38 GGGGAGU CUGAUGAG X CGAA AUCUAUG CAUAGAU C ACUCCCC 42 CACAGGG CUGAUGAG X CGAA AGUGAUC GAUCACU C CCCUGUG 57 AAGACAG CUGAUGAG X CGAA AGUUCCU AGGAACU A CUGUCUU 62 GCGUGAA CUGAUGAG X CGAA ACAGUAG CUACUGU C UUCACGC 64 CUGCGUG CUGAUGAG X CGAA AGACAGU ACUGUCU U CACGCAG UCUGCGU CUGAUGAG X CGAA AAGACAG CUGUCUU C ACGCAGA 79 AUGGCUA CUGAUGAG X CGAA ACGCUUU AAAGCGU C UAGCCAU 81 CCAUGGC CUGAUGAG X CGAA AGACGCU AGCGUCU A GCCAUGG 92 UCAUACU CUGAUGAG X CGAA ACGCCAU AUGGCGU U AGUAUGA 93 CUCAUAC CUGAUGAG X CGAA AACGCCA UGGCGUU A GUAUGAG 96 ACACUCA CUGAUGAG X CGAA ACUAACG CGUUAGU A UGAGUGU 104 GCUGCAC CUGAUGAG X CGAA ACACUCA UGAGUGU C GUGCAGC 142 AGACCAC CUGAUGAG X CGAA AUGGCUC GAGCCAU A GUGGUCU 192 AAGAAAG CUGAUGAG X CGAA ACCCGGU ACCGGGU C CUUUCUU 195 UCCAAGA CUGAUGAG X CGAA AGGACCC GGGUCCU U UCUUGGA 196 AUCCAAG CUGAUGAG X CGAA AAGGACC GGUCCUU U CUUGGAU 197 GAUCCAA CUGAUGAG X CGAA AAAGGAC GUCCUUU C UUGGAUC 204 GCGGGUU CUGAUGAG X CGAA AUCCAAG CUUGGAU C AACCCGC 227 ACGCCCA CUGAUGAG X CGAA AUCUCCA UGGAGAU U UGGGCGU 228 CACGCCC CUGAUGAG X CGAA AAUCUCC GGAGAUU U GGGCGUG 282 GUACCAC CUGAUGAG X CGAA AGGCCUU AAGGCCU U GUGGUAC 354 GGUUUAG CUGAUGAG X CGAA AUUCGUG CACGAAU C CUAAACC 357 UGAGGUU CUGAUGAG X CGAA AGGAUUC GAAUCCU A AACCUCA 363 UUUCUUU CUGAUGAG X CGAA AGGUUUA UAAACCU C AAAGAAA 381 UAGGUGU CUGAUGAG X CGAA ACGUUUG CAAACGU A ACACCUA 388 GCGGCGG CUGAUGAG X CGAA AGGUGUU AACACCU A CCGCCGC WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Substrate 431 CACCAAC CUGAtJGAG X CGAA AUJCUGAC GUCAGAU C GUUGGUG 434 CUCCACC CEIGAUGAG X CGAA ACGAUCU AGAUCGU U GGUGGAG 443 ACACGUA CUGAUGAG X CGAA ACUCCAC GUGGAGU U UACGUGU 444 AACACGU CUGAUGAG X CGAA AACUCCA UGGAGUU U ACGUGUU 445 CAACACG CUGAUGAG X CGAA AAACUCC GGAGUUU A CGUGUUG 451 GCGCGGC CUGAUGAG X CGAA ACACGUA UACGUGU U GCCGCGC 516 CUUCCAC CUGAUGAG X CGAA AGGUUGC GCAACCU C GUGGAAG 688 AUUGCGC CUGAUGAG X CGAA ACCUCCG CGGAGGU C GCGCAAU 702 AUGACCU CUGAUGAG X CGAA ACCCAGA UCUGGGU A AGGUCAU 719 CGCACGU CUGAUGAG X CGAA AGGGUAU AUACCCU C ACGUGCG 740 ACCCCAU CUGAUGAG X CGAA AGGUCGG CCGACCU C AUGGGGU 861 AUAGAGA CUGAUGAG X CGAA AGAGCAA UUGCUCU U UCUCUAU 862 GAUAGAG CUGAUGAG X CGAA AAGAGCA UGCUCUU U CUCUAUC 863 AGAUAGA CUGAUGAG X CGAA AAAGAGC GCUCUUU C UCUAUCU 865 GAAGAUA CUGAUGAG X CGAA AGAAAGA UCUUUCU C UAUCUUC 867 AGGAAGA CUGAUGAG X CGAA AGAGAAA UUUCUCU A UCUUCCU 8169 AGAGGAA CUGAUGAG X CGAA AUAGAGA UCUCUAU C UUCCUCU 871 CAAGAGG CUGAUGAG X CGAA AGAUAGA UCUAUCU U CCUCUUG 872 CCAAGAG CUGAUGAG X CGAA AAGAUAG CUAUCUU C CUCUUGG 875 GGGCCAA CUGAUGAG X CGAA AGGAAGA UCUUCCU C UUGGCCC 877 CAGGGCC CUGArJGAG X CGAA AGAGGAA UUCCUCU U GGCCCUG 889 CAAACAG CUGAtIGAG X CGAA ACAGCAG CUGCUGU C CUGUUUG 894 AUGGUCA CUGAUGAG X CGAA ACAGGAC GUCCUGU U UGACCAU 895 GAUGGUC CUGAUGAG X CGAA AACAGGA UCCUGUU U GACCAUC 902 AAGCUGG CUGAUGAG X CGAA AUGGUCA UGACCAU C CCAGCUU 909 UAAGCGG CUGAUGAG X CGAA AGCUGGG CCCAGCU U CCGCUUA 910 AUAAGCG CUGAUGAG X CGAA AAGCUGG CCAGCUU C CGCUUAU 915 ACCUGAU CUGAUGAG X CGAA AGCGGAA UUCCGCU U AUCAGGU 916 CACCUGA CUGAUGAG X CGAA AAGCGGA UCCGCUU A UCAGGUG 918 CGCACCU CUGAUGAG X CGAA AUAAGCG CUAUCAGGUGCG WO 99/55847 WO 9955847PCTIUS99/09027 Pos. Ribozyme Substrate 934 CAGCCCG CUGAUGAG X CGAA AUGCGUU AACGCAU C CGGGCUG 943 GACAUGG CUGAtJGAG X CGAA ACAGCCC GGGCUGU A CCAUGUC 950 CAUUCGU CUGAUGAG X CGAA ACAUGGU ACCAUGU C ACGAAUG 964 UGAGUUG CUGAUGAG X CGAA AGCAGUC GACUGCU C CAACUCA 970 AAUGCUU CUGAUGAG X CGAA AGUUGGA UCCAACU C AAGCAUU 977 CAUACAC CUGAUGAG X CGAA AUGCUUG CAAGCAU U GUGUAUG 1008 CCGGGGG CUGAUGAG X CGAA AUGCAUG CAUGCAU A CCCCCGG 1067 UGGGAGU CUGAUGAG X CGAA AGCGCUA UAGCGCU C ACUCCCA 1071 AGCGUGG CUGAUGAG X CGAA AGUGAGC GCUCACU C CCACGCU 1079 UGGCCGC CUGAUGAG X CGAA AGCGUGG CCACGCU C GCGGCCA 1100 UAGUGGG CUGAUGAG X CGAA AUGCUGG CCAGCAU C CCCACUA 1107 AUUGUCG CUGAUGAG X CGAA AGUGGGG CCCCACU A CGACAAU 1115 GGCGUCG CUGAUGAG X CGAA AUUGUCG CGACAAU A CGACGCC 1152 GAACAGA CUGAUGAG X CGAA AGCGGCC GGCCGCU U UCUGUUC 1181 AUCCGCA CUGAUGAG X CGAA AGGUCCC GGGACCU C UGCGGAU 1199 GGGAGAC CUGAUGAG X CGAA AGGAAAA UUUUCCU C GUCUCCC 1202 ACUGGGA CUGAUGAG X CGAA ACGAGGA UCCUCGU C UCCCAGU 1204 CAACUGG CUGAUGAG X CGAA AGACGAG CUCGUCU C CCAGUUG 1210 GGUGAAC CUGAUGAG X CGAA ACUGGGA UCCCAGU U GUUCACC 1213 GAAGGUG CUGAUGAG X CGAA ACAACUG CAGUUGU U CACCUUC 1214 AGAAGGU CUGAUGAG X CGAA AACAACU AGUUGUU C ACCUUCU 1219 AGGCGAG CUGAUGAG X CGAA AGGUGAA UUCACCU U CUCGCCU 1220 GAGGCGA CUGAUGAG X CGAA AAGGUGA UCACCUU C UCGCCUC 1222 GCGAGGC CUGAUGAG X CGAA AGAAGGU ACCUUCU C GCCUCGC 1227 UACCGGC CUGAUGAG X CGAA AGGCGAG CUCGCCU C GCCGGUA 1234 UGUCUCA CUGAUGAG X CGAA ACCGGCG CGCCGGU A UGAGACA 1244 AGUCCUG CUGAUGAG X CGAA ACUGUCU AGACAGU A CAGGACU 1257 AUUGAGC CUGAUGAG X CGAA AUUGCAG CUGCAAU U GCUCAAU 1261 AUAGAUU CUGAUGAG X CGAA AGCAAUU AAUUGCU C AAUCUAU 1265 CGGGAUA CUGAUGAG X CGAA AUUGAGC GCUCAIAU C UAUCCCG WO 99/55847 PCT[US99/09027 Pos. Ribozyme Substrate 1267 GCCGGGA CUGAUGAG X CGAA AGAUUGA UCAAUCU A UCCCGGC 1269 UGGCCGG CUGAUGAG X CGAA AUAGAUU AAUCUAU C CCGGCCA 1299 AUAUCCC CUGAUGAG X CGAA AGCCAUG CAUGGCU U GGGAUAU 1305 AUCAUCA CUGAUGAG X CGAA AUCCCAA UUGGGAU A UGAUGAU 1321 UGUAGGC CUGAUGAG X CGAA ACCAGUU AACUGGU C GCCUACA 1326 GCUGUUG CUGAUGAG X CGAA AGGCGAC GUCGCCU A CAACAGC 1337 ACACCAC CUGAUGAG X CGAA AGGGCUG CAGCCCU A GUGGUGU 1345 UAACUGC CUGAUGAG X CGAA ACACCAC GUGGUGU C GCAGUUA 1351 CCGGAGU CUGAUGAG X CGAA ACUGCGA UCGCAGU U ACUCCGG 1352 UCCGGAG CUGAUGAG X CGAA AACUGCG CGCAGUU A CUCCGGA 1355 GGAUCCG CUGAUGAG X CGAA AGUAACU AGUUACU C CGGAUCC 1361 CUUGUGG CUGAUGAG X CGAA AUCCGGA UCCGGAU C CCACAAG 1449 AAGACCU CUGAUGAG X CGAA AGCCCAG CUGGGCU A AGGUCUU 1454 CAAUCAA CUGAUGAG X CGAA ACCUUAG CUAAGGU C UUGAUUG 1456 CACAAUC CUGAUGAG X CGAA AGACCUU AAGGUCU U GAUUGUG 1460 ACAUCAC CUGAUGAG X CGAA AUCAAGA UCUUGAU U GUGAUGU 1468 AAAGAGU CUGAUGAG X CGAA ACAUCAC GUGAUGU U ACUCUUU 1469 CAAAGAG CUGAUGAG X CGAA AACAUCA UGAUGUU A CUCUUUG 1472 CGGCAAA CUGAUGAG X CGAA AGUAACA UGUUACU C UUUGCCG 1474 GCCGGCA CUGAUGAG X CGAA AGAGUAA UUACUCU U UGCCGGC 1475 CGCCGGC CUGAUGAG X CGAA AAGAGUA UACUCUU U GCCGGCG 1484 CCCCGUC CUGAUGAG X CGAA ACGCCGG CCGGCGU U GACGGGG 1493 UGUAAGU CUGAUGAG X CGAA ACCCCGU ACGGGGU C ACUUACA 1497 GUCGUGU CUGAUGAG X CGAA AGUGACC GGUCACU U ACACGAC 1498 UGUGGUG CUGAUGAG X CGAA AAGUGAC GUCACUU A CACGACA 1513 AGCUUGC CUGAUGAG X CGAA ACCCCCC GGGGGGU C GCAAGCU 1521 GUGUGGC CUGAUGAG X CGAA AGCUUGC GCAAGCU C GCCACAC 1538 AGGACGU CUGAUGAG X CGAA ACGCUCU AGAGCGU C ACGUCCU 1543 GAAGAAG CUGAUGAG X CGAA AGGUGAC GUCACGU C CUUCUUC 1546 GGUGAAG CUGAUGAG X CGAA AGGACGU ACGUCCU U CUUCACC WO 99/55847 PCT[US99/09027 Pos. Ribozyme Substrate 1547 GGGUGAA CtJGAUGAG X CGAA AAGGACG CGUCCUU C EUUCACCC 1549 UUGGGUG CUGAUGAG X CGAA AGAAGGA UCCUUCU U CACCCAA 1550 CUUGGGU CUGAUGAG X CGAA AAGAAGG CCUUCUU C ACCCAAG 1574 UGAGCUG CUGAUGAG X CGAA AUUCUCU AGAGAAU C CAGCUCA 1580 UGUUUAU CUGAUGAG X CGAA AGCUGGA UCCAGCU C AUAAACA 1583 UGGUGUU CUGAUGAG X CGAA AUGAGCU AGCUCAU A AACACCA 1607 UCCUGUU CUGAUGAG X CGAA AUGUGCC GGCACAU C AACAGGA 1636 GUUGAGG CUGAUGAG X CGAA AUUCAUU AAUGAAU C CCUCAAC 1640 CGGUGUU CUGAUGAG X CGAA AGGGAUU AAUCCCU C AACACCG 1651 GGCAAAG CUGAUGAG X CGAA ACCCGGU ACCGGGU U CUUUGCC 1652 CGGCAAA CUGAUGAG X CGAA AACCCGG CCGGGUU C UUUGCCG 1654 UGCGGCA CUGAtJGAG X CGAA AGAACCC GGGUUCU U UGCCGCA 1655 GUGCGGC CUGAUGAG X CGAA AAGAACC GGUUCUU U GCCGCAC 1666 UGCGUAG CUGAUGAG X CGAA ACAGUGC GCACUGU U CUACGCA 1667 GUGCGUA CUGAUGAG X CGAA AACAGUG CACUGUU C UACGCAC 1669 GUGUGCG CUGAUGAG X CGAA AGAACAG CUGUUCU A CGCACAC 1681 CGAGUUG CUGAUGAG X CGAA ACOUGUG CACAAGU U CAACUCG 1682 ACGAGUU CUGAUGAG X CGAA AACUUGU ACAAGUU C AACUCGU 1687 UCCGGAC CUGAUGAG X CGAA AGUUGAA UUCAACU C GUCCGGA 1690 GCAUCCG CUGAUGAG X CGAA ACGAGUU AACUCGU C CGGAUGC 1723' GUGGAUG CUGAUGAG X CGAA AGCUGCA UGCAGCU C CAUCGAC 1764 GGCUCGG CUGAUGAG X CGAA AUAGGUG CACCUAU A CCGAGCC 1773 AGGUCCC CUGAUGAG X CGAA AGGCUCG CGAGCCU A GGGACCU 1785 GGCCUCU CUGAUGAG X CGAA AUCCAGG CCUGGAU C AGAGGCC 1714 CAGCAGU CUGAUGAG X CGAA AGGCCUC GAGGCCU U ACUGCUG 1861 GAAACAG CUGAUGAG X CGAA ACACUGG CCAGUGU A CUGUUUC 1866 GGGGUGA CUGAUGAG X CGAA ACAGUAC GUACUGU U UCACCCC 18 67 UGGGGUG CUGAUGAG X CGAA AACAGUA UACUGUU U CACCCCA 1868 UUGGGGU CUGAUGAG X CGAA AAACAGU ACUGUUU C ACCCCAA 1955 UGUUGAG CUGAUGAG X CGAA AGCAGCA UGCUGCU U CUCAACA WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Substrate 1956 UUGUUGA CUGAUGAG X CGAA AAGCAGC GCUGCUU C UCAACAA 1958 UGUUGUU CUGAUGAG X CGAA AGAAGCA UGCUUCU C AACAACA 2020 CUUGGUG CUGAUGAG X CGAA ACCCAGU ACUGGGU U CACCAAG 2021 UCUUGGU CUGAUGAG X CGAA AACCCAG CUGGGUU C ACCAAGA 2094 CGAAAGC CUGAUGAG X CGAA AUCCGUG CACGGAU U GCUUUCG 2098 CUUCCGA CUGAUGAG X CGAA AGCAAUC GAUUGCU U UCGGAAG 2099 GCUUCCG CUGAUGAG X CGAA AAGCAAU AUUGCUU U CGGAAGC 2100 UGCUUCC CUGAUGAG X CGAA AAAGCAA UUGCUUU C GGAAGCA 2157 AUACACC CUGAUGAG X CGAA AGGUGUU AACACCU A GGUGUAU 2163 UCAACUA CUGAUGAG X CGAA ACACCUA UAGGUGU A UAGUUGA 2165 AGUCAAC CUGAUGAG X CGAA AUACACC GGUGUAU A GUUGACU 2168 GGUAGUC CUGAUGAG X CGAA ACUAUAC GUAUAGU U GACUACC 2173 GUAUGGG CUGAUGAG X CGAA AGUCAAC GUUGACU A CCCAUAC 2179 GAGCCUG CUGAUGAG X CGAA AUGGGUA UACCCAU A CAGGCUC 2186 AGUGCCA CUGAUGAG X CGAA AGCCUGU ACAGGCU C UGGCACU 2194 GCAGGGG CUGAUGAG X CGAA AGUGCCA UGGCACU A CCCCUGC 2207 UAAAGUU CUGAUGAG X CGAA ACAGUGC GCACUGU C AACUUUA 2212 GAUGGUA CUGAUGAG X CGAA AGUUGAC GUCAACU U UACCAUC 2213 AGAUGGU CUGAUGAG X CGAA AAGUUGA UCAACUU U ACCAUCU 2214 AAGAUGG CUGAUGAG X CGAA AAAGUUG CAACUUU A CCAUCUU 2222 UAACCUU CUGAUGAG X CGAA AAGAUGG CCAUCUU U AAGGUUA 2223 CUAACCU CUGAUGAG X CGAA AAAGAUG CAUCUUU A AGGUUAG 2228 ACAUCCU CUGAUGAG X CGAA ACCUUAA UUAAGGU U AGGAUGU 2229 UACAUCC CUGAUGAG X CGAA AACCUUA UAAGGUU A GGAUGUA 2236 CCCCACA CUGAUGAG X CGAA ACAUCCU AGGAUGU A UGUGGGG 2283 UCUCCUC CUGAUGAG X CGAA AGUCCAG CUGGACU C GAGGAGA 2366 AACAGGG CUGAUGAG X CGAA AGUGUCU AGACACU U CCCUGUU 2367 GAACAGG CUGAUGAG X CGAA AAGUGUC GACACUU C CCUGUUC 2373 GUGAAGG CUGAUGAG X CGAA ACAGGGA UCCCUGU U CCUUCA 234 GGUGAAG CUGAUGAG X CGAA AACAGGG CCCUGUU C CUUCACC WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Substrate 2377 GGUGGUG CUGAUGAG X CGAA AGGAACA UGUUCCU U CACCACC 2378 GGGUGGU CUGAUGAG X CGAA AAGGAAC GUUCCUU C ACCACCC 2387 GAGCCGG CUGAUGAG X CGAA AGGGUGG CCACCCU A CCGGCUC 2394 GUGGACA CUGAUGAG X CGAA AGCCGGU ACCGGCU C UGUCCAC 2398 ACCAGUG CUGAUGAG X CGAA ACAGAGC GCtJCUGU C CACUGGU 2406 UGGAUCA CUGAUGAG X CGAA ACCAGUG CACUGGU U UGAUCCA 2407 GUGGAUC CUGAUGAG X CGAA AACCAGU ACUGGUU U GAUCCAC 2411 GGAGGUG CUGAUGAG X CGAA AUCAAAC GUUUGAU C CACCUCC 2443 GUACAGG CUGAUGAG X CGAA ACUGCAC GUGCAGU A CCUGUAC 2449 UAUACCG CUGAUGAG X CGAA ACAGGUA UACCUGU A CGGUAUA 2454 GACCCUA CUGAUGAG X CGAA ACCGUAC GUACGGU A UAGGGUC 2456 CUGACCC CUGAUGAG X CGAA AUACCGU ACGGUAU A GGGUCAG 2461 AACCGCU CUGAUGAG X CGAA ACCCUAU AUAGGGU C AGCGGUU 2468 AGGAGAC CUGAUGAG X CGAA ACCGCUG CAGCGGU U GUCUCCU 2471 CAAAGGA CUGAUGAG X CGAA ACAACCG CGGUUGU C UCCUUUG 2473 CACAAAG CUGAUGAG X CGAA AGACAAC GUUGUCU C CUUUGUG 2476 GAUCACA CUGAUGAG X CGAA AGGAGAC GUCUCCU U UGUGAUC 2477 UGAUCAC CUGAUGAG X CGAA AAGGAGA UCUCCUU U GUGAUCA 2483 CCCAUUU CUGAUGAG X CGAA AUCACAA UUGUGAU C AAAUGGG 2494 CACGAUA CUGAUGAG X CGAA ACUCCCA UGGGAGU A UAUCGUG 2496 AACACGA CUGAUGAG X CGAA AUACUCC GGAGUAU A UCGUGUU 2498 GCAACAC CUGAUGAG X CGAA AUAUACU AGUAUAU C GUGUUGC 2503 GAAAAGC CUGAUGAG X CGAA ACACGAU AUCGUGU U GCUUUUC 2507 GAAGGAA CUGAUGAG X CGAA AGCAACA UGUUGCU U UUCCUUC 2508 AGAAGGA CUGAUGAG X CGAA AAGCAAC GUUGCUU U UCCUUCU 2509 GAGAAGG CUGAUGAG X CGAA AAAGCAA UUGCUUU U CCUUCUC 2510 GGAGAAG CUGAUGAG X CGAA AAAAGCA UGCUUUU C CUUCUCC 2513 CCAGGAG CUGAUGAG X CGAA AGGAAAA UUUUCCU U CUCCUGG 2514 GCCAGGA CUGAUGAG X CGAA AAGGAAA UUUCCUU C UCCUGGC 2516 CCGCCAG CUGAUGAG X CGAA AGAAGGA UCCUUCU C CUGGCGG WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Substrate 2545 CAUCCAC CUGAUGAG X CGAA AGCAGGC GCCUGCU U GIJGGAUG 2564 CCUGGGC CUGAUGAG X CGAA AUCAGCA UGCUGAU A GCCCAGG 2614 GGCCAGG CUGAUGAG X CGAA ACGCCGC GCGGCGU C CCUGGCC 2636 AGGAGAG CUGAUGAG X CGAA AIJGCCAU AUGGCAU U CUCUCCU 2637 AAGGAGA CUGAUGAG X CGAA AAUGCCA UGGCAUU C UCUCCUU 2639 GGAAGGA CUGAUGAG X CGAA AGAAUGC GCAUUCU C UCCUUCC 2641 AAGGAAG CUGAUGAG X CGAA AGAGAAU AUUCUCU C CUUCCUU 2644 CACAAGG CUGAUGAG X CGAA AGGAGAG CUCUCCU U CCUUGUG 2645 ACACAAG CUGAUGAG X CGAA AAGGAGA UCUCCUU C CUUGUGU 2648 AAAACAC CUGAUGAG X CGAA AGGAAGG CCUUCCU U GUGUUUU 2653 ACAGAAA CUGAUGAG X CGAA ACACAAG CUUGUGU U UUUCUGU 2654 CACAGAA CUGAUGAG X CGAA AACACAA UUGUGUU U UUCUGUG 2655 GCACAGA CUGAUGAG X CGAA AAACACA UGUGUUU U UCUGUGC 2656 GGCACAG CUGAUGAG X CGAA AAAACAC GUGUUUU U CUGUGCC 2657 CGGCACA CUGAUGAG X CGAA AAAAACA UGUUUUU C UGUGCCG 2732 GGAGCAG CUGAUGAG X CGAA AGCAGCG CGCUGCU C CUGCUCC 2749 UGGUGGU CUGAUGAG X CGAA ACGCCAG CUGGCGU U ACCACCA 2750 GUGGUGG CUGAUGAG X CGAA AACGCCA UGGCGUU A CCACCAC 2791 UCCACAC CUGAUGAG X CGAA AUGCAGC GCUGCAU C GUGUGGA 2807 CUACAAA CUGAUGAG X CGAA ACCACCC GGGUGGU U UUUGUAG 2808 CCUACAA CUGAUGAG X CGAA AACCACC GGUGGUU U UUGUAGG 2809 ACCUACA CUGAUGAG X CGAA AAACCAC GUGGUUU U UGUAGGU 2810 GACCUAC CUGAUGAG X CGAA AAAACCA UGGUUUU U GUAGGUC 2813 UUAGACC CUGAUGAG X CGAA ACAAAAA UUUUUGU A GGUCUAA 2817 AGUAUUA CUGAUGAG X CGAA ACCUACA UGUAGGU C UAAUACU 2819 AGAGUAU CUGAUGAG X CGAA AGACCUA UAGGUCU A AUACUCU 2822 UCAAGAG CUGAUGAG X CGAA AUUAGAC GUCUAAU A CUCUUGA 2825 AGGUCAA CUGAUGAG X CGAA AGUAUUA UAAUACU C UUGACCU 2827 CAAGGUC CUGAUGAG X CGAA AGAGUAU AUACUCU U GACCUUG 2833 UGGUGAC CUGAUGAG X CGAA AGGUCAA UUGACCU U GUCACCA WO 99/55847 PCT/US99/09027 Pos. Ribozyme Substrate 2836 GUGUGGU CUGAUGAG X CGAA ACAAGGU ACCUUGU C ACCACAC 2845 CACUUUG CUGAUGAG X CGAA AGUGUGG CCACACU A CAAAGUG 2854 GGCGAGG CUGAUGAG X CGAA ACACUUU AAAGUGU U CCUCGCC 2855 UGGCGAG CUGAUGAG X CGAA AACACUU AAGUGUU C CUCGCCA 2858 GCCUGGC CUGAUGAG X CGAA AGGAACA UGUUCCU C GCCAGGC 2867 ACCAUAU CUGAUGAG X CGAA AGCCUGG CCAGGCU C AUAUGGU 2870 ACCACCA CUGAUGAG X CGAA AUGAGCC GGCUCAU A UGGUGGU 2889 CUGGUGA CUGAUGAG X CGAA AAAGUAU AUACUUU A UCACCAG 2891 CCCUGGU CUGAUGAG X CGAA AUAAAGU ACUUUAU C ACCAGGG 2993 CAAAGAU CUGAUGAG X CGAA AGCUCUG CAGAGCU A AUCUUUG 2996 UGUCAAA CUGAUGAG X CGAA AUUAGCU AGCUAAU C UUUGACA 2998 AAUGUCA CUGAUGAG X CGAA AGAUUAG CUAAUCU U UGACAUU 2999 UAAUGUC CUGAUGAG X CGAA AAGAUUA UAAUCUU U GACAUUA 3005 GUUUGGU CUGAUGAG X CGAA AUGUCAA ULJGACAU U ACCAAAC 3006 AGUUUGG CUGAUGAG X CGAA AAUGUCA UGACAUU A CCAAACU 3014 CGAGCAG CUGAUGAG X CGAA AGUUUGG CCAAACU C CUGCUCG 3020 GAAUGGC CUGAUGAG X CGAA AGCAGGA UCCUGCU C GCCAUUC 3026 GACCGAG CUGAUGAG X CGAA AUGGCGA UCGCCAU U CUCGGUC 3027 GGACCGA CUGAUGAG X CGAA AAUGGCG CGCCAUU C UCGGUCC 3029 GCGGACC CUGAUGAG X CGAA AGAAUGG CCAUUCU C GGUCCGC 3033 AUGAGCG CUGAUGAG X CGAA ACCGAGA UCUCGGU C CGCUCAU 3038 GCACCAU CUGAUGAG X CGAA AGCGGAC GUCCGCU C AUGGUGC 3047 CAGCCUG CUGAUGAG X CGAA AGGACCA UGGUGCU C CAGGCUG 3073 UACAAAG CUGAUGAG X CGAA ACGGCAU AUGCCGU A CUUUGUA 3076 GCGUACA CUGAUGAG X CGAA AGUACGG CCGUACU U UGUACGC 3077 CGCGUAC CUGAUGAG X CGAA AAGUACG CGUACUU U GUACGCG 3080 GAGCGCG CUGAUGAG X CGAA ACAAAGU ACUUUGU A CGCGCUC 3087 AGCCCCU CUGAUGAG X CGAA AGCGCGU ACGCGCU C AGGGGCU 3095 CACGAAU CUGAUGAG X CGAA AGCCCCU AGGGGCU U AUUCGUG 3096 GCACGAA CUGAUGAG X CGAA AAGCCCC GGGGCUU A UUCGUGC WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Substrate 3098 AUGCACG CUGAtJGAG X CGAA AUAAGCC GGCUUAU U CGUGCA] 3099 CAUGCAC CtJGAUGAG X CGAA AAUAAGC GCUUAUU C GUGCAUG 3112 CCGCACC CUGAtJGAG X CGAA ACAtJGCA UGCAUGU U GGUGCGG 3125 CUCCGGC CUGAUGAG X CGAA ACUUUCC GGAAAGU A GCCGGAG 3180 ACGUACG CUGAIJGAG X CGAA ACCUGUC GACAGGU A CGUACGU 3184 AUAGACG CUGAUGAG X CGAA ACGUACC GGUACGU A CGUCUAU 3188 GGUCAUA CUGAUGAG X CGAA ACGUACG CGUACGU C UAUGACC 3190 AUGGUCA CUGAUGAG X CGAA AGACGUA UACGUCU A UGACCAU 3198 GGGGUAA CUGAUGAG X CGAA AUGGUCA UGACCAU C UUACCCC 3200 GCGGGGU CUGAUGAG X CGAA AGAUGGU ACCAUCU U ACCCCGC 3201 AGCGGGG CUGAUGAG X CGAA AAGAUGG CCAUCUU A CCCCGCU 3254 CGGGCUC CUGAUGAG X CGAA ACUGCCA UGGCAGU A GAGCCCG 3269 UGUCAGA CUGAUGAG X CGAA AAGACGA UCGUCUU C UCUGACA 3271 CAUGUCA CUGAUGAG X CGAA AGAAGAC GUCUUCU C UGACAUG 3374 GUCCCAG CUGAUGAG X CGAA AGUAUCU AGAUACU U CUGGGAC 3375 GGUCCCA CUGAUGAG X CGAA AAGUAUC GAUACUU C UGGGACC 3390 UCAAUGC CUGAUGAG X CGAA AUCGGCC GGCCGAU A GCAUUGA 3395 GCCCUUC CUGAUGAG X CGAA AUGCUAU AUAGCAU U GAAGGGC 3436 UUGGGCG CUGAUGAG X CGAA AGGCCGU ACGGCCU A CGCCCAA 3458 AACCAAG CUGAUGAG X CGAA AGGCCCC GGGGCCU A CUUGGUU 3461 UGCAACC CUGAUGAG X CGAA AGUAGGC GCCUACU'U GGUUGCA 3465 ACAAUGC CUGAUGAG X CGAA ACCAAGU ACUUGGU U GCAUUGU 3470 UAGUAAC CUGAUGAG X CGAA AUGCAAC GUUGCAU U GUUACUA 3473 GGCUAGU CUGAUGAG X CGAA ACAAUGC GCAUUGU U ACUAGCC 3474 AGGCUAG CUGAUGAG X CGAA AACAAUG CAUUGUU A CUAGCCU 3477 GUGAGGC CUGAUGAG X CGAA AGUAACA UGUUACU A GCCUCAC 3506 CCCCUUC CUGAUGAG X CGAA ACCUGGU ACCAGGU C GAAGGGG 3544 CAGGAAA CUGAUGAG X CGAA AUUGUGU ACACAAU C UUUCCUG 3546 GCCAGGA CUGAUGAG X CGAA AGAUUGU ACAAUCU U UCCUGGC 3547 CGCCAGG CUGAUGAG X CGAA AAGAUUG CAAUCUU U CCUGGCG WO 99/55847 WO 99S5847PCTIUS99/09027 Pos. Ribozyme Substrate 3548 UCGCCAG CUGAUGAG X CGAA AAAGAUU AAUCUUU C CUGGCGA 3563 CACCAUU CUGAUGAG X CGAA ACGCAGG CCUGCGU U AAUGGUG 3564 ACACCAU CUGAUGAG X CGAA AACGCAG CUGCGUU A AUGGUGU 3584 CGUGGAA CUGAUGAG X CGAA ACGGUCC GGACCGU C UUCCACG 3586 GCCGUGG CUGAUGAG X CGAA AGACGGU ACCGUCU U CCACGGC 3587 CGCCGEJG CUGAUGAG X CGAA AAGACGG CCGUCUU C CACGGCG 3632 UUUGGGU CUGAUGAG X CGAA AUUGGGC GCCCAAU C ACCCAAA 3643 AUUAGUG CUGAUGAG X CGAA ACAUUUG CAAAUGU A CACUAAU 3648 UCUACAU CUGAUGAG X CGAA AGUGUAC GUACACU A AUGUAGA 3653 CUUGGUC CUGAUGAG X CGAA ACAUUAG CUAAUGU A GACCAAG 3665 AGCCGAC CUGAUGAG X CGAA AGGUCUU AAGACCU C GUCGGCU 3668 GCCAGCC CUGAUGAG X CGAA ACGAGGU ACCUCGU C GGCUGGC 3720 UCCGAGC CUGAUGAG X CGAA ACCGCAG CUGCGGU A GCUCGGA 3758 CCGGAAU CUGAUGAG X CGAA AGGUCAG CUGACGU C AUUCCGG 3815 AAUAGGA CUGAUGAG X CGAA ACGGGUC GACCCGU C UCCUAUU 3817 CAAAUAG CUGAUGAG X CGAA AGACGGG CCCGUCU C CUAUUUG 3820 CUUCAAA CUGAUGAG X CGAA AGGAGAC GUCUCCU A UUUGAAG 3822 CCCUUCA CUGAUGAG X CGAA AUAGGAG CUCCUAU U UGAAGGG 3823 GCCCUUC CUGAUGAG X CGAA AAUAGGA UCCUAUU U GAAGGGC 3832 ACCCGAA CUGAUGAG X CGAA AGCCCUU AAGGGCU C UUCGGGU 3834 CCACCCG CUGAUGAG X CGAA AGAGCCC GGGCUCU U CGGGUGG 3925 GGGUAUG CUGAUGAG X CGAA AGUCCAC GUGGACU U CAUACCC 3926 CGGGUAU CUGAUGAG X CGAA AAGUCCA UGGACUU C AUACCCG 3929 CAACGGG CUGAUGAG X CGAA AUGAAGU ACUUCAU A CCCGUUG 3935 UAGACUC CUGAUGAG X CGAA ACGGGUA UACCCGU U GAGUCUA 3940 UUCCAUA CUGAUGAG X CGAA ACUCAAC GUUGAGU C UAUGGAA 3942 GUUUCCA CUGAUGAG X CGAA AGACUCA UGAGUCU A UGGAAAC 3951 CGCAUAG CUGAUGAG X CGAA AGUUUCC GGAAACU A CUAUGCG 3954 GACCGCA CUGAUGAG X CGAA AGUAGUU AACUACU A UGCGGUC 3961 GACCGGG CUGAUGAG X CGAA ACCGCAU AUGCGGU C CCCGGUC WO 99/55847 PCT/US99/09027 Pos. Ribozyme Substrate 3968 CCGUGAA CUGAUGAG X CGAA ACCGGGG CCCCGGU C UUCACGG 3970 GUCCGUG CUGAUGAG X CGAA AGACCGG CCGGUCU U CACGGAC 3971 UGUCCGU CUGAUGAG X CGAA AAGACCG CGGUCUU C ACGGACA 3982 GGGAGAU CUGAUGAG X CGAA AGUUGJC GACAACU C AUCUCCC 3985 CGGGGGA CUGAUGAG X CGAA AUGAGUU AACUCAU C UCCCCCG 3987 GCCGGGG CUGAUGAG X CGAA AGAUGAG CUCAUCU C CCCCGGC 3998 UCUGCGG CUGAUGAG X CGAA ACGGCCG CGGCCGU A CCGCAGA 4009 CACUUGG CUGAUGAG X CGAA AUGUCUG CAGACAU U CCAAGUG 4010 CCACUUG CUGAUGAG X CGAA AAUGUCU AGACAUU C CAAGUGG 4023 GCGUGUA CUGAUGAG X CGAA AUGGGCC GGCCCAU C UACACGC 4025 GAGCGUG CUGAUGAG X CGAA AGAUGGG rCCCAUCU A CACGCUC 4032 CCAGUGG CUGAUGAG X CGAA AGCGUGU ACACGCU C CCACUGG 4094 GGACGAG CUGAUGAG X CGAA ACCUUGU ACAAGGU A CUCGUCC 4097 UCAGGAC CUGAUGAG X CGAA AGUACCU AGGUACU C GUCCUGA 4100 GGUUCAG CUGAUGAG X CGAA ACGAGUA UACUCGU C CUGAACC 4111 GGCAACA CUGAUGAG X CGAA AUGGGUU AACCCAU C UGUUGCC 4126 AAAACCC CUGAUGAG X CGAA AGGUGGC GCCACCU U GGGUUUU 4131 GCCCCAA CUGAUGAG X CGAA ACCCAAG CUUGGGU U UUGGGGC 4132 CGCCCCA CUGAUGAG X CGAA AACCCAA UUGGGUU U UGGGGCG 4133 ACGCCCC CUGAUGAG X CGAA AAACCCA UGGGUUU U GGGGCGU 4141 AGACAUA CUGAUGAG X CGAA ACGCCCC GGGGCGU A UAUGUCU 4143 UUAGACA CUGAUGAG X CGAA AUACGCC GGCGUAU A UGUCUAA 4147 UGCCUUA CUGAUGAG X CGAA ACAUAUA UAUAUGU C UAAGGCA 4149 UGUGCCU CUGAUGAG X CGAA AGACAUA UAUGUCU A AGGCACA 4161 GGGUCGG CUGAUGAG X CGAA ACCAUGU ACAUGGU A CCGACCC 4196 CCGUGGU CUGAUGAG X CGAA AUGGUCC GGACCAU U ACCACGG 4197 CCCGUGG CUGAUGAG X CGAA AAUGGUC GACCAUU A CCACGGG 4214 AGUACGU CUGAUGAG X CGAA AUGGGGG CCCCCAU C ACGUACU 4219 GGUGGAG CUGAUGAG X CGAA ACGUGAU AUCACGU A CUCCACC 4222 AUAGGUG CUGAUGAG X CGAA AGUACGU ACGUACU C CACCUAU WO 99/55847 PCTJLJS99/09027 Pos. Ribozyme Substrate 4257 CCCCCAG CUJGAEJGAG X CGAA ACAUCCA UGGAUGU U CUGGGGG 4258 GCCCCCA CUGAUGAG X CGAA AACAUCC GGAUGUU C UGGGGGC 4270 GAUAUCA CUGAUGAG X CGAA AGGCGCC GGCGCCU A UGAUAUC 4275 AUUAUGA CUGAUGAG X CGAA AUCAUAG CUAUGAU A UCAUAAU 4277 AUAUUAU CUGAUGAG X CGAA AUAUCAU AUGAUAU C AUAAUAU 4300 GUCAGUU CUGAUGAG X CGAA AGUGGCA UGCCACU C AACUGAC 4309 GGUAGUC CUGAUGAG X CGAA AGUCAGU ACUGACU C GACUACC 4314 AGGAUGG CUGAUGAG X CGAA AGUCGAG CUCGACU A CCAUCCUI 4319 UGCCCAG CUGAUGAG X CGAA AUGGUAG CUACCAU C CUGGGCA 4328 CUGUGCC CUGAUGAG X CGAA AUGCCCA UGGGCAU C GGCACAG 4389 GGAGGCG CUGAUGAG X CGAA AGCGGUG CACCGCU A CGCCUCC 4395 GAUCCCG CUGAUGAG X CGAA AGGCGUA UACGCCU C CGGGAUC 4402 GGUAACC CUGAUGAG X CGAA AUCCCGG CCGGGAU C GGUUACC 4406 GCACGGU CUGAUGAG X CGAA ACCGAUC GAUCGGU U ACCGUGC 4407 GGCACGG CUGAUGAG X CGAA AACCGAU AUCGGUU A CCGUGCC 4427 CCUCCUC CUGAUGAG X CGAA AUAUUUG CAAAUAU U GAGGAGG 4440 UUGGACA CUGAUGAG X CGAA AGCCACC GGUGGCU C UGUCCAA 4465 GCCAUAG CUGAUGAG X CGAA AGGGGAU AUCCCCU U CUAUGGC 4466 UGCCAUA CUGAUGAG X CGAA AAGGGGA UCCCCUU C UAUGGCA 4468 CUUGCCA CUGAUGAG X CGAA AGAAGGG CCCUUCU A UGGCAAG 4512 AAAAUGA CUGAUGAG X CGAA AUGCCUU AAGGCAU C UCAUUUU 4514 AGAAAAU CUGAUGAG X CGAA AGAUGCC GGCAUCU C AUUUUCU 4517 GGCAGAA CUGAUGAG X CGAA AUGAGAU AUCUCAU U UUCUGCC 4518 UGGCAGA CUGAUGAG X CGAA AAUGAGA UCUCAUU U UCUGCCA 4519 GUGGCAG CUGAUGAG X CGAA AAAUGAG CUCAUUU U CUGCCAC 4520 AGUGGCA CUGAUGAG X CGAA AAAAUGA UCAUUUU C UGCCACU 4550 UUGCGGC CUGAUGAG X CGAA AGCUCAU AUGAGCU C GCCGCAA 4564 GAGGCCU CUGAUGAG X CGAA ACAGCUU AAGCUGU C AGGCCUC 4571 UGAUUCC CUGAUGAG X CGAA AGGCCUG CAGGCCU C GGAAUCA 4602 ACGUCAA CUGAUGAG X CGAA ACCCCGG CCGGGGU C UUGACGU WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Substrate 4604 ACACGUC CUGAUGAG X CGAA AGACCCC GGGGUCU U GACGUGU 4612 UAUGACG CUGAUGAG X CGAA ACACGUC GACGUGU C CGUCAUA 4637 CGAUAAC CUGAUGAG X CGAA ACAUCUC GAGAUGU C GUUAUCG 4640 CCACGAU CUGAUGAG X CGAA ACGACAU AUGUCGU U AUCGUGG 4641 GCCACGA CUGAUGAG X CGAA AACGACA UGUCGUU A UCGUGGC 4643 UUGCCAC CUGAUGAG X CGAA AUAACGA UCGUUAU C GUGGCAA 4659 GUCAUUA CUGAUGAG X CGAA AGCGUCU AGACGCU C EJAAUGAC 4661 CCGUCAU CUGAUGAG X CGAA AGAGCGU ACGCUCU A AUGACGG 4684 CGAGUCA CUGAUGAG X CGAA AGUCACC GGUGACU U UGACUCG 4685 CCGAGUC CUGAUGAG X CGAA AAGUCAC GUGACUU U GACUCGG 4690 GAUCACC CUGAUGAG X CGAA AGUCAAA UUUGACU C GGUGAUC 4715 UCUGGGU CUGAUGAG X CGAA ACACAUG CAUGUGU C ACCCAGA 4727 UGAAAUC CUGAUGAG X CGAA ACUGUCU AGACAGU C GAUUUCA 4731 AAGCUGA CUGAUGAG X CGAA AUCGACU AGUCGAU U UCAGCUU 4732 CAAGCUG CUGAUGAG X CGAA AAUCGAC GUCGAUU U CAGCUUG 4733 CCAAGCU CUGAUGAG X CGAA AAAUCGA UCGAUUU C AGCUUGG 4738 GGGAUCC CUGAUGAG X CGAA AGCUGAA UUCAGCU U GGAUCCC 4743 AAGGUGG CUGAUGAG X CGAA AUCCAAG CUUGGAU C CCACCUU 4750 AAUGGUA CUGAUGAG X CGAA AGGUGGG CCCACCU U UACCAUU 4751 CAAUGGU CUGAUGAG X CGAA AAGGUGG CCACCUU U ACCAUUG 4752 UCAAUGG CUGAUGAG X CGAA AAAGGUG CACCUUU A CCAUUGA 4757 UCGUCUC CUGAUGAG X CGAA AUGGUAA UUACCAU U GAGACGA 4824 CCUCCCC CUGAUGAG X CGAA ACCCCUG CAGGGGU A GGGGAGG 4835 ACCUGUA CUGAUGAG X CGAA AUGCCUC GAGGCAU C UACAGGU 4837 AAACCUG CUGAUGAG X CGAA AGAUGCC GGCAUCU A CAGGUUU 4843 AGUCACA CUGAUGAG X CGAA ACCUGUA UACAGGU U UGUGACU 4844 GAGUCAC CUGAUGAG X CGAA AACCUGU ACAGGUU U GUGACUC 4851 UCUCCCG CUGAUGAG X CGAA AGUCACA UGUGACU C CGGGAGA 4867 CAUGCCC CUGAUGAG X CGAA AGGGCCG CGGCCCU C GGGCAUG 4876 AGAAUCG CUGAUGAG X CGAA ACAUGCC GGCAUGU U CGAUUCU WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Substrate 4877 AAGAAUC CtJGAUGAG X CGAA AACAUGC GCAUGUU C GAUUCUU 4881 ACCGAAG CUGAUGAG X CGAA AUCGAAC GUUCGAU U CUUCGGU 4882 GACCGAA CUGAUGAG X CGAA AAUCGAA UUCGAUU C UUCGGUC 4884 AGGACCG CUGAUGAG X CGAA AGAAUCG CGAUUCU U CGGUCCU 4885 CAGGACC CUGAUGAG X CGAA AAGAAUC GAUUCUU C GGUCCUG 4889 CACACAG CUGAUGAG X CGAA ACCGAAG CUUCGGU C CUGUGUG 4903 CGCGUCA CUGAUGAG X CGAA AGCACUC GAGUGCU A UGACGCG 5011 UUCCCAG CUGAUGAG X CGAA ACUCCAG CUGGAGU U CUGGGAA 5012 UUUCCCA CUGAUGAG X CGAA AACUCCA UGGAGUU C UGGGAAA 5024 CUGUGAA CUGAUGAG X CGAA ACGCUUU AAAGCGJ C UUCACAG 5026 GCCUGUG CUGAUGAG X CGAA AGACGCU AGCGUCU U CACAGGC 5027 GGCCUGU CUGAUGAG X CGAA AAGACGC GCGUCUU C ACAGGCC 5036 UGUGGGU CUGAUGAG X CGAA AGGCCUG CAGGCCU C ACCCACA 5045 GGGCAUC CUGAUGAG X CGAA AUGUGGG CCCACAU A GAUGCCC 5056 GGACAGG CUGAUGAG X CGAA AGUGGGC GCCCACU U CCUGUCC 5057 GGGACAG CUGAUGAG X CGAA AAGUGGG CCCACUU C CUGUCCC 5062 GGUUUGG CUGAUGAG X CGAA ACAGGAA UUCCUGU C CCAAACC 5089 GUAAGGG CUGAUGAG X CGAA AGUUGUC GACAACU U CCCUUAC 5090 GGUAAGG CUGAUGAG X CGAA AAGUUGU ACAACUU C CCUUACC 5094 ACCAGGU CUGAUGAG X CGAA AGGGAAG CUUCCCU U ACCUGGU 5095 UACCAGG CUGAUGAG X CGAA AAGGGAA UUCCCUU A CCUGGUA 5139 GGAGGUG CUGAUGAG X CGAA AGCCUGA UCAGGCU C CACCUCC 5145 CACGAUG CUGAUGAG X CGAA AGGUGGA UCCACCU C CAUCGUG 5149 AUCCCAC CUGAUGAG X CGAA AUGGAGG CCUCCAU C GUGGGAU 5157 CACAUUU CUGAUGAG X CGAA AUCCCAC GUGGGAU C AAAUGUG 5172 CGUAUGA CUGAUGAG X CGAA ACACUUC GAAGUGU C UCAUACG 5174 GCCGUAU CUGAUGAG X CGAA AGACACU AGUGUCU C AUACGGC 5177 UAAGCCG CUGAUGAG X CGAA AUGAGAC GUCUCAU A CGGCUUA 5183 UAGGUUU CUGAUGAG X CGAA AGCCGUA UACGGCU U AAACCUA 5184 GUAGGUU CUGAUGAG X CGAA AAGCCGU] ACGGCUU A AACCUAC WO 99/55847 PCT/US99/09027 Pos. Ribozyme Substrate 5190 EJGCAGCG CUGAUGAG X CGAA AGGUUUA UAAACCU A CGCUGCA 5225 CGGCUCC CUGAUGAG X CGAA AGCCUAU AUAGGCU A GGAGCCG 5234 CAUUUUG CUGAUGAG X CGAA ACGGCUC GAGCCGU U CAAAAUG 5235 UCAUUUU CUGAUGAG X CGAA AACGGCU AGCCGUU C AAAAUGA 5246 UGAGGGU CUGAUGAG X CGAA AUCUCAU AUGAGAU C ACCCUCA 5252 GAUGUGU CUGAUGAG X CGAA AGGGUGA UCACCCU C ACACAUC 5259 GUUAUGG CUGAUGAG X CGAA AUGUGUG CACACAU C CCAUAAC 5264 AUUUGGU CUGAUGAG X CGAA AUGGGAUJ AUCCCAU A ACCAAAU 5272 CAUGAUG CUGAUGAG X CGAA AUUUGGU ACCAAAU U CAUCAUG 5273 CCAUGAU CUGAUGAG X CGAA AAUUUGG CCAAAUU C AUCAUGG 5276 AUGCCAU CUGAUGAG X CGAA AUGAAUU AAUUCAU C AUGGCAU 5290 GUCGGCC CUGAUGAG X CGAA ACAUGGA UGCAUGU C GGCCGAC 5349 GCGGCCA CUGAUGAG X CGAA AGCUGCA UGCAGCU C UGGCCGC 5384 CCACAAU CUGAUGAG X CGAA ACCACAC GUGUGGU C AUUGUGG 5387 UACCCAC CUGAUGAG X CGAA AUGACCA UGGUCAU U GUGGGUA 5394 AUGAUCC CUGAUGAG X CGAA ACCCACA UGUGGGU A GGAUCAU 5402 CGGACAA CUGAUGAG X CGAA AUGAUCC GGAUCAU U UUGUCCG 5403 CCGGACA CUGAUGAG X CGAA AAUGAUC GAUCAUU U UGUCCGG 5404 CCCGGAC CUGAUGAG X CGAA AAAUGAU AUCAUUU U GUCCGGG 5407 CCUCCCG CUGAUGAG X CGAA ACAAAAU AUUUUGU C CGGGAGG 5441 GGUAGAG CUGAUGAG X CGAA ACUUCCC GGGAAGU C CUCUACC 5444 CCCGGUA CUGAUGAG X CGAA AGGACUU AAGUCCU C UACCGGG 5446 CUCCCGG CUGAUGAG X CGAA AGAGGAC GUCCUCU A CCGGGAG 5455 UUCAUCG CUGAUGAG X CGAA ACUCCCG CGGGAGU U CGAUGAA 5456 UUUCAUC CUGAUGAG X CGAA AACUCCC GGGAGUU C GAUGAAA 5479 GAGGUGU CUGAUGAG X CGAA AGGCGCA UGCGCCU C ACACCUC 5486 UGUAAGG CUGAUGAG X CGA\ AGGUGUG CACACCU C CCUUACA 5490 UCGAUGU CUGAUGAG X CGAA AGGGAGG CCUCCCU U ACAUCGA 5491 UUCGAUG CUGAUGAG X CGAA AAGGGAG CUCCCUU A CAUCGAA 5495 CCUGUUC CUGAUGAG X CGAA AUGUAAG CUUACAU C GAACAGG WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Substrate 5513 GCUCGGC CUGAUGAG X CGAA AGCUGCA UGCAGCU C GCCGAGC 5540 GCAACCC CUGAUGAG X CGAA AGUGCCU AGGCACU C GGGUUGC 5545 UUGCAGC CUGAUGAG X CGAA ACCCGAG CUCGGGU U GCUGCAA 5644 GCUGAUG CUGAUGAG X CGAA AGUUCCA UGGAACU U CAUCAGC 5645 CGCUGAU CUGAUGAG X CGAA AAGUUCC GGAACUU C AUCAGCG 5648 UCCCGCU CUGAUGAG X CGAA AUGAAGU ACUUCAU C AGCGGGA 5657 AAUACUG CUGAUGAG X CGAA AUCCCGC GCGGGAU A CAGUAUU 5662 UGCUAAA CUGAUGAG X CGAA ACUGUAU AUACAGU A UUUAGCA 5664 CCUGCUA CUGAUGAG X CGAA AUACUGU ACAGUAU U UAGCAGG 5665 GCCUGCU CUGAUGAG X CGAA AAUACUG CAGUAUU U AGCAGGC 5666 AGCCUGC CUGAUGAG X CGAA AAAUACU AGUAUUU A GCAGGCU 5677 CAGAGUG CUGAUGAG X CGAA AUAAGCC GGCUUAU C CACUCUG 5682 CCAGGCA CUGAUGAG X CGAA AGUGGAU AUCCACU C UGCCUGG 5702 GUGAUGC CUGAUGAG X CGAA AUCGCGG CCGCGAU A GCAUCAC 5707 CAUCAGU CUGAUGAG X CGAA AUGCUAU AUAGCAU C ACUGAUG 5719 GGCUGUG CUGAUGAG X CGAA AUGCCAU AUGGCAU U CACAGCC 5720 AGGCUGU CUGAUGAG X CGAA AAUGCCA UGGCAUU C ACAGCCU 5728 GGUGAUA CUGAUGAG X CGAA AGGCUGU ACAGCCU C UAUCACC 5730 CUGGUGA CUGAUGAG X CGAA AGAGGCU AGCCUCU A UCACCAG 5732 GACUGGU CUGAUGAG X CGAA AUAGAGG CCUCUAU C ACCAGUC 5739 GUGAGCG CUGAUGAG X CGAA ACUGGUG CACCAGU C CGCUCAC 5744 GGGUGGU CUGAUGAG X CGAA AGCGGAC GUCCGCU C ACCACCC 5757 AGGAGGG CUGAUGAG X CGAA AUUCUGG CCAGAAU A CCCUCCU 5762 UGAACAG CUGAUGAG X CGAA AGGGUAU AUACCCU C CUGUUCA 5774 CCCCUAA CUGAUGAG X CGAA AUGUUGA UCAACAU C UUAGGGG 5776 UCCCCCU CUGAUGAG X CGAA AGAUGUU AACAUCU U AGGGGGA 5777 AUCCCCC CUGAUGAG X CGAA AAGAUGU ACAUCUU A GGGGGAU 5796 GCGAGUU CUGAUGAG X CGAA AGCAGCC GGCUGCU C AACUCGC 5808 GCACUGG CUGAUGAG X CGAA AGGAGCG CGCUCCU C CCAGUGC 5820 AAGGCCG CUGAUGAG X CGAA AGCAGCA UGCUGCU U CGGCCUU WO 99/55847 PCT/US99/09027 Pos. Ribozyme Substrate 5885 UGUCCAC CUGAUGAG X CGAA AGCACCU AGGUGCU U GUGGACA 5894 CCGCCAG CUGAUGAG X CGAA AUGUCCA UGGACAU U CUGGCGG 5895 CCCGCCA CUGAUGAG X CGAA AAUGUCC GGACAUU C UGGCGGG 5986 AGGGAGC CUGAUGAG X CGAA AGUUAAC GUUAACU U GCUCCCU 5999 GGGAGAG CUGAUGAG X CGAA AUGGCAG CUGCCAU C CUCUCCC 6002 CGGGGGA CUGAUGAG X CGAA AGGAUGG CCAUCCU C UCCCCCG 6101 CGAACGC CUGAUGAG X CGAA AUCAGCC GGCUGAU A GCGUUCG 6112 ACCCCGC CUGAUGAG X CGAA AAGCGAA UUCGCUU C GCGGGGU 6120 ACGUGGU CUGAUGAG X CGAA ACCCCGC GCGGGGU A ACCACGU 6128 UGGGGGA CUGAUGAG X CGAA ACGUGGU ACCACGU U UCCCCCA 6129 GUGGGGG CUGAUGAG X CGAA AACGUGG CCACGUU U CCCCCAC 6130 CGUGGGG CEGAUGAG X CGAA AAACGUG CACGUUU C CCCCACG 6142 AGGCACG CUGAUGAG X CGAA AGUGCGU ACGCACU A CGUGCCU 6173 UCUGAGU CUGAUGAG X CGAA ACACGUG CACGUGU A ACUCAGA 6177 AGGAUCU CUGAUGAG X CGAA AGUUACA UGUAACU C AGAUCCU 6182 UGGAGAG CUGAUGAG X CGAA AUCUGAG CUCAGAU C CUCUCCA 6185 GGCUGGA CUGAUGAG X CGAA AGGAUCU AGAUCCU C UCCAGCC 6187 GAGGCUG CUGAUGAG X CGAA AGAGGAU AUCCUCU C CAGCCUC 6194 UGAUGGU CUGAUGAG X CGAA AGGCUGG CCAGCCU C ACCAUCA 6200 GCUGAGU CUGAUGAG X CGAA AUGGUGA UCACCAU C ACUCAGC 6204 AGCAGCU CUGAUGAG X CGAA AGUGAUG CAUCACU C AGCUGCU 6221 ACUGGUG CUGAUGAG X CGAA AGCCUCU AGAGGCU U CACCAGU 6222 CACUGGU CUGAUGAG X CGAA AAGCCUC GAGGCUU C ACCAGUG 6233 CCUCAUU CUGAUGAG X CGAA AUCCACU AGUGGAU U AAUGAGG 6234 UCCUCAU CUGAUGAG X CGAA AAUCCAC GUGGAUU A AUGAGGA 6247 UGGCGUG CUGAUGAG X CGAA AGCAGUC GACUGCU C CACGCCA 6259 CGAGCCG CUGAUGAG X CGAA AGCAUGG CCAUGCU C CGGCUCG 6265 UAGCCAC CUGAUGAG X CGAA AGCCGGA UCCGGCU C GUGGCUA 6272 CAUCCUU CUGAUGAG X CGAA AGCCACG CGUGGCU A AAGGAUG 6281 AGUCCCA CUGAUGAG X CGAA ACAUCCU AGGAUGTEU U UGGGACU WO 99/55847 PTU9/92 PCT/US99/09027 Pos. Rtibozyme Substrate 6282 CAGUCCC CUGAUGAG X CGAA AACAUCC GGAUGUU U GGGACUG 6293 CCGUGCA CUGAUGAG X CGAA AUCCAGU ACUGGAU A UGCACGG 6304 GUCAGUC CUGAUGAG X CGAA ACACCGU ACGGUGU U GACUGAC 6313 GGUCUUG CUGAUGAG X CGAA AGUCAGU ACUGACU U CAAGACC 6314 AGGUCUU CUGAUGAG X CGAA AAGUCAG CUGACUU C AAGACCU 6326 UGGACUG CUGAUGAG X CGAA AGCCAGG CCUGGCU C CAGUCCA 6331 GAGCUUG CUGAUGAG X CGAA ACUGGAG CUCCAGU C CAAGCUC 6338 UCGGCAG CUGAUGAG X CGAA AGCUUGG CCAAGCU C CUGCCGA 6349 UCCCGGC CUGAUGAG X CGAA AUUUCGG CCGAAAU U GCCGGGA 6359 AGAAAGG CUGAUGAG X CGAA ACUCCCG CGGGAGU C CCUUUCU 6363 GAGAAGA CUGAUGAG X CGAA AGGGACU AGUCCCU U UCUUCUC 6364 UGAGAAG CUGAUGAG X CGAA AAGGGAC GUCCCUU U CUUCUCA 6365 AUGAGAA CUGAUGAG X CGAA AAAGGGA UCCCUUU C UUCUCAU 6367 GCAUGAG CUGAUGAG X CGAA AGAAAGG CCUUUCU U CUCAUGC 6368 GGCAUGA CUGAUGAG X CGAA AAGAAAG CUUUCUU C UCAUGCC 6370 UUGGCAU CUGAUGAG X CGAA AGAAGAA UUCUUCU C AUGCCAA 6385 UCCCUUG CUGAUGAG X CGAA ACCCGCG CGCGGGU A CAAGGGA 6395 CCCGCCA CUGAUGAG X CGAA ACUCCCU AGGGAGU C UGGCGGG 6446 GUCCGGU CUGAUGAG X CGAA AUUUGUG CACAAAU U ACCGGAC 6447 UGUCCGG CUGAUGAG X CGAA AAUUUGU ACAAAUU A CCGGACA 6458 CGUUUUU CUGAUGAG X CGAA ACAUGUC GACAUGU C AAAAACG 6468 CUCAUGG CUGAUGAG X CGAA ACCGUUU AAACGGU U CCAUGAG 6469 CCUCAUG CUGAUGAG X CGAA AACCGUU AACGGUU C CAUGAGG 6479 GCCCAAC CUGAUGAG X CGAA AUCCUCA UGAGGAU C GUUGGGC 6482 UAGGCCC CUGAUGAG X CGAA ACGAUCC GGAUCGU U GGGCCUA 6489 CAGGUUU CUGAUGAG X CGAA AGGCCCA UGGGCCU A AAACCUG 6520 GAUGGGG CUGAUGAG X CGAA ACGUUCC GGAACGU U CCCCAUC 6521 UGAUGGG CUGAUGAG X CGAA AACGUUC GAACGUU C CCCAUCA 6527 ACGCGUU CUGAUGAG X CGAA AUGGGGA UCCCCAU C AACGCGU 6535 UGUGGUG CUGAUGAG X CGAA ACGCGUU AACGCGU A CACCACA WO 99/55847 PCT/US99/09027 Pos. Ribozyme Substrate 6559 CGCCGGG CUGAUGAG X CGAA AGGGUGU ACACCCU C CCCGGCG 6610 CUCCACG CUGAUGAG X CGAA ACUCUUC GAAGAGU A CGUGGAG 6620 CCCGCGU CUGAUGAG X CGAA AUCUCCA UGGAGAU U ACGCGGG 6621 ACCCGCG CUGAUGAG X CGAA AAUCUCC GGAGAUU A CGCGGGU 6654 GUGGUCA CUGAUGAG X CGAA ACCCGUC GACGGGU A UGACCAC 6689 GGGCCGG CUGAUGAG X CGAA ACCUGGC GCCAGGU C CCGGCCC 6781 GACCUGG CUGAUGAG X CGAA AUGUGAC GUCACAU U CCAGGUC 6854 UGGAAGU CUGAUGAG X CGAA AGCACUG CAGUGCU C ACUUCCA 6858 AGCAUGG CUGAUGAG X CGAA AGUGAGC GCUCACU U CCAUGCU 6859 GAGCAUG CUGAUGAG X CGAA AAGUGAG CUCACUU C CAUGCUC 6866 GGUCGGU CUGAUGAG X CGAA AGCAUGG CCAUGCU C ACCGACC 6877 AAUGUGG CUGAUGAG X CGAA AGGGGUC GACCCCU C CCACAUU 6884 CUGCUGU CUGAUGAG X CGAA AUGUGGG CCCACAU U ACAGCAG 6885 UCUGCUG CUGAUGAG X CGAA AAUGUGG CCACAUU A CAGCAGA 6900 CUACGUU CUGAUGAG X CGAA AGCCGUC GACGGCU A AACGUAG 6945 CUAGCUG CUGAUGAG X CGAA AGAGCUG CAGCUCU U CAGGUAG 6946 GCUAGCU CUGAUGAG X CGAA AAGAGCU AGCUCUU C AGCUAGC 6951 AAUUGGC CUGAUGAG X CGAA AGCUGAA UUCAGCU A GCCAAUU 6969 UUCAAGG CUGAUGAG X CGAA AGGCGCA UGCGCCU U CCUUGAA 6970 CUUCAAG CUGAUGAG X CGAA AAGGCGC GCGCCUU C CUUGAAG 6973 UGCCUUC CUGAUGAG X CGAA AGGAAGG CCUUCCU U GAAGGCA 6990 UGGUGGG CUGAUGAG X CGAA AGUGCAU AUGCACU A CCCACCA 7003 GUCCGGG CUGAUGAG X CGAA AGUCAUG CAUGACU C CCCGGAC 7019 CCUCGAU CUGAUGAG X CGAA AGGUCAG CUGACCU C AUCGAGG 7022 UGGCCUC CUGAUGAG X CGAA AUGAGGU ACCUCAU C GAGGCCA 7064 CACGGGU CUGAUGAG X CGAA AUGUUUC GAAACAU C ACCCGUG 7078 AUUCUCU CUGAUGAG X CGAA ACUCCAC GUGGAGU C AGAGAAU 7086 ACCACCU CUGAUGAG X CGAA AUUCUCU AGAGAAU A AGGUGGU 7094 CCAAAAU CUGAUGAG X CGAA ACCACCU AGGUGGU A AUUUUGG 7097 AGUCCAA CUGAUGAG X CGAA AUUACCA UGGUAAU U UUGGACU WO 99/55847 PCT[US99/09027 Pos. Ribozyme Substrate 7098 GAGUCCA CUGAUGAG X CGAA AAUUACC GGUAAUU U UGGACUC 7099 AGAGUCC CUGAUGAG X CGAA AAAUUAC GUAAUUU U GGACUCU 7105 GUCGAAA CUGAUGAG X CGAA AGUCCAA UUGGACU C UUUCGAC 7107 GGGUCGA CUGAUGAG X CGAA AGAGUCC GGACUCU U UCGACCC 7108 CGGGUCG CUGAUGAG X CGAA AAGAGUC GACUCUU U CGACCCG 7109 GCGGGUC CUGAUGAG X CGAA AAAGAGU ACUCUUU C GACCCGC 7147 UGCAACG CUGAUGAG X CGAA AUACUUC GAAGUAU C CGUUGCA 7151 CUGCUGC CUGAUGAG X CGAA ACGGAUA UAUCCGU U GCAGCAG 7163 UUCGCAG CUGAUGAG X CGAA AUCUCUG CAGAGAU C CUGCGAA 7174 CUUCUUG CUGAUGAG X CGAA AUUUUCG CGAAAAU C CAAGAAG 7183 GGGGGGG CUGAUGAG X CGAA ACUUCUU AAGAAGU U CCCCCCC 7184 CGGGGGG CUGAUGAG X CGAA AACUUCU AGAAGUU C CCCCCCG 7227 AACAGUG CUGAUGAG X CGAA AGGGUUG CAACCCU C CACUGUU 7240 UUUCCAG CUGAUGAG X CGAA ACUCUAA UUAGAGU C CUGGAAA 7308 GGUAUUG CUGAUGAG X CGAA AGGGCCC GGGCCCU C CAAUACC 7313 GAGGCGG CUGAUGAG X CGAA AUUGGAG CUCCAAU A CCGCCUC 7320 UUCCGUG CUGAUGAG X CGAA AGGCGGU ACCGCCU C CACGGAA 7340 UCAGAAC CUGAUGAG X CGAA ACCGUCC GGACGGU U GUUCUGA 7343 CUGUCAG CUGAUGAG X CGAA ACAACCG CGGUUGU U CUGACAG 7344 UCUGUCA CUGAUGAG X CGAA AACAACC GGUUGUU C UGACAGA 7363 GGCAGAA CUGAUGAG X CGAA ACACGGU ACCGUGU C UUCUGCC 7365 AAGGCAG CUGAUGAG X CGAA AGACACG CGUGUCU U CUGCCUU 7366 CAAGGCA CUGAUGAG X CGAA AAGACAC GUGUCUU C UGCCUUG 7372 CUCCGCC CUGAUGAG X CGAA AGGCAGA UCUGCCU U GGCGGAG 7405 CGAUCCG CUGAUGAG X CGAA AGCUGCC GGCAGCU C CGGAUCG 7446 UGAUCGG CUGAUGAG X CGAA AGGGGCG CGCCCCU C CCGAUCA 7452 1GAGGUCU CUGAUGAG X CGAA AUCGGGA UCCCGAU C AGACCUC 7459 GUCGUCA CUGAUGAG X CGAA AGGUCUG CAGACCU C UGACGAC 7480 AACGUCA CUGAUGAG X CGAA AUUCUUU AAAGAAU C UGACGUU 7487 ACGACUC CUGAUGAG X CGAA ACGUCAG CUGACGU U GAGUCGU WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Substrate 7492 GGAGUAC CUGAUGAG X CGAA ACUCAAC GUUGAGU C GUACUCC 7495 GGAGGAG CUGAUGAG X CGAA ACGACUC GAGUCGU A CUCCUCC 7609 CCAUGUG CUGAUGAG X CGAA AGGACAU AUGUCCU A CACAUGG 7631 AtJGGCGU CUGAUGAG X CGAA AUCAGGG CCCUGAU C ACGCCAU 7675 GUUGCUC CUGAUGAG X CGAA ACGCGUU AACGCGU U GAGCAAC 7684 CAGCAGA CUGAUGAG X CGAA AGUUGCU AGCAACU C UCUGCUG 7686 CGCAGCA CUGAUGAG X CGAA AGAGUUG CAACUCU C UGCUGCG 7695 UUGUGGU CUGAUGAG X CGAA ACGCAGC GCUGCGU C ACCACAA 7709 UGGCAUA CUGAUGAG X CGAA ACCAUGU ACAUGGU C UAUGCCA 7711 UGUGGCA CUGAUGAG X CGAA AGACCAU AUGGUCU A UGCCACA 7754 CAAAGGU CUGAUGAG X CGAA ACCUUCU AGAAGGU C ACCUUUG 7759 UCUGUCA CUGAUGAG X CGAA AGGUGAC GUCACCU U UGACAGA 7760 GUCUGUC CUGAUGAG X CGAA AAGGUGA UCACCUU U GACAGAC 7802 UCUCCUU CUGAUGAG X CGAA AGCACGU ACGUGCU C AAGGAGA 7825 AACUGUG CUGAUGAG X CGAA ACGCCUU AAGGCGU C CACAGUU 7832 UAGCCUU CUGAUGAG X CGAA ACUGUGG CCACAGU U AAGGCUA 7833 UUAGCCU CUGAUGAG X CGAA AACUGUG CACAGUU A AGGCUAA 7844 CGGAUAG CUGAUGAG X CGAA AGUUUAG CUAAACU U CUAUCCG 7845 ACGGAUA CUGAUGAG X CGAA AAGUUUA UAAACUU C UAUCCGU 7884 UUGGCCG CUGAUGAG X CGAA AUGUGGG CCCACAU U CGGCCAA 7985 UUUGGCC CUGAUGAG X CGAA AAUGUGG CCACAUU C GGCCAAA 7922 GGUUCCG CUGAUGAG X CGAA ACGUCCU AGGACGU C CGGAACC 7931 UGCUGGA CUGAUGAG X CGAA AGGUUCC GGAACCU A UCCAGCA 7933 CUUGCUG CUGAUGAG X CGAA AUAGGUU AACCUAU C CAGCAAG 7946 UGUGGUU CUGAUGAG X CGAA AUGGCCU AGGCCAU U AACCACA 7947 AUGUGGU CUGAUGAG X CGAA AAUGGCC GGCCAUU A ACCACAU 8000 UGGUGUC CUGAUGAG X CGAA AUUGGUG CACCAAU U GACACCA 8012 UUGCCAU CUGAUGAG X CGAA AUGGUGG CCACCAU C AUGGCAA 8030 CGCAGAA CUGAUGAG X CGAA ACUUCAC GUGAAGU U UUCUGCG 8031 ACGCAGA CUGAUGAG X CGAA AACUUCA UGAAGUU U UCUGCGU WO 99/55847 PCT/US99/09027 Pos. Ribozyme Substrate 8032 GACGCAG CUGAUGAG X CGAA AAACUUC GAAGUUU U CUGCGUC 8033 GGACGCA CUGAUGAG X CGAA AAAACUU AAGUUUU C UGCGUCC 8039 CCGGUUG CUGAUGAG X CGAA ACGCAGA UCUGCGU C CAACCGG 8070 AUAAGGC CUGAUGAG X CGAA AGCUGGC GCCAGCU C GCCUUAU 8081 CUGGGAA CUGAUGAG X CGAA ACGAUAA UUAUCGU A UUCCCAG 8083 GUCUGGG CUGAUGAG X CGAA AUACGAU AUCGUAU U CCCAGAC 8084 GGUCUGG CUGAUGAG X CGAA AAUACGA UCGUAUU C CCAGACC 8099 AUACACG CUGAUGAG X CGAA ACUCCCA UGGGAGU U CGUGUAU 8100 CAUACAC CUGAUGAG X CGAA AACUCCC GGGAGUU C GUGUAUG 8105 UCUCGCA CUGAUGAG X CGAA ACACGAA UUCGUGU A UGCGAGA 8121 UCGUAAA CUGAUGAG X CGAA AGCCAUU AAUGGCU C UUUACGA 8123 CGUCGUA CUGAUGAG X CGAA AGAGCCA UGGCUCU U UACGACG 8124 ACGUCGU CUGAUGAG X CGAA AAGAGCC GGCUCUU U ACGACGU 8125 CACGUCG CUGAUGAG X CGAA AAAGAGC GCUCUUU A CGACGUG 8135 GGGUGGA CUGAUGAG X CGAA ACCACGU ACGUGGU C UCCACCC 8137 AAGGGUG CUGAUGAG X CGAA AGACCAC GUGGUCU C CACCCUU 8144 CCUGAGG CUGAUGAG X CGAA AGGGUGG CCACCCU U CCUCAGG 8145 GCCUGAG CUGAUGAG X CGAA AAGGGUG CACCCUU C CUCAGGC 8148 ACGGCCU CUGAUGAG X CGAA AGGAAGG CCUUCCU C AGGCCGU 8164 GUAGGAG CUGAUGAG X CGAA AGCCCAU AUGGGCU C CUCGUAC 8167 UCCGUAC CUGAUGAG X CGAA AGGAGCC GGCUCCU C GUACGGA 8177 AGUACUG CUGAUGAG X CGAA AAUCCGU ACGGAUU C CAGUACU 8185 CCCAGGA CUGAUGAG X CGAA AGUACUG CAGUACU C UCCUGGG 8241 AAGCCCA CUGAUGAG X CGAA AGGGCUU AAGCCCU A UGGGCUU 8248 AUACGAG CUGAUGAG X CGAA AGCCCAU AUGGGCU U CUCGUAU 8249 CAUACGA CUGAUGAG X CGAA AAGCCCA UGGGCUU C UCGUAUG 8251 GUCAUAC CUGAUGAG X CGAA AGAAGCC GGCUUCU C GUAUGAC 8254 GGUGUCA CUGAUGAG X CGAA ACGAGAA UUCUCGU A UGACACC 8269 UGAGUCA CUGAUGAG X CGAA AGCAGCG CGCUGCU U UGACUCA 8270 UUGAGUC CUGAUGAG X CGAA AAGCAGC GCUGCUU U GACUCAA WO 99/55847 WO 9955847PCT/US99/09027 Pos. Ribozyme Substrate 8275 GACUGUU CUGAUGAG X CGAA AGUCAAA UUUGACU C AACAGUC 8282 UCUCAGU CUGAUGAG X CGAA ACUGUUG CAACAGU C ACUGAGA 8297 CAACACG CUGAUJGAG X CGAA AUGUCGC GCGACAU C CGUGUUG 8303 ACUCCUC CUGAUGAG X CGAA ACACGGA UCCGUGU U GAGGAGU 8311 GUAGAUU CUGAUGAG X CGAA ACUCCUC GAGGAGU C AAUCUAC 8315 AUUGGUA CUGAUGAG X CGAA AUUGACU AGUCAAU C UACCAAU 8317 ACAUUGG CUGAUGAG X CGAA AGAUUGA UCAAUCU A CCAAUGU 8325 AAGUCAC CUGAUGAG X CGAA ACAUUGG CCAAUGU U GUGACUU 8332 GGGGGCC CUGAUGAG X CGAA AGUCACA UGUGACU U GGCCCCC 8400 UUUGAAU CUGAUGAG X CGAA AGUCAGG CCUGACU A AUUCAAA 8403 CCUUUUG CUGAUGAG X CGAA AUUAGUC GACUAAU U CAAAAGG 8404 CCCUUUU CUGAUGAG X CGAA AAUUAGU ACUAAUUJ C AAAAGGG 8472 GUGAGGG CUGAUGAG X CGAA AUUGCCG CGGCAAU A CCCUCAC 8477 AGCAUGU CUGAUGAG X CGAA AGGGUAU AUACCCU C ACAUGCU 8485 UUUCAAG CUGAUGAG X CGAA AGCAUGU ACAUGCU A CUUGAAA 8488 GGCUUUC CUGAUGAG X CGAA AGUAGCA UGCUACU U GAAAGCC 8565 UCACAGA CUGAUGAG X CGAA AACGACA UGUCGUU A UCUGUGA 8567 UUUCACA CUGAUGAG X CGAA AUAACGA UCGUUAU C UGUGAAA 8606 AGACUCG CUGAUGAG X CGAA AGGCUCG CGAGCCU A CGAGUCU 8612 CCGUGAA CUGAUGAG X CGAA ACUCGUA UACGAGU C UUCACGG 8614 CUCCGUG CUGAUGAG X CGAA AGACUCG CGAGUCU U CACGGAG 8615 CCUCCGU CUGAUGAG X CGAA AAGACUC GAGUCUU C ACGGAGG 8625 CUAGUCA CUGAUGAG X CGAA AGCCUCC GGAGGCU A UGACUAG 8631 GAGUACC CUGAUGAG X CGAA AGUCAUA UAUGACU A GGUACUC 8635 GGCAGAG CUGAUGAG X CGAA ACCUAGU ACUAGGO A CUCUGCC 8677 CAACUCC CUGAUGAG X CGAA AGUCGUA UACGACU U GGAGUUG 8683 UGUUAUC CUGAUGAG X CGAA ACUCCAA UUGGAGU U GAUAACA 8687 AUGAUGU CUGAUGAG X CGAA AUCAACU AGUUGAU A ACAUCAU 8692 GGAGCAU CUGAUGAG X CGAA AUGUUAU AUAACAU C AUGCUCC 8710 CGCGACC CUGAUGAG X CGAA ACACGUU AACGUGU C GGUCGCG WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Substrate 8714 CGUGCGC CUGAUGAG X CGAA ACCGACA UGUCGGU C GCGCACG 8743 GAGGUAG CUGAUGAG X CGAA ACACUCU IAGAGUGO A CUACCUC 8746 AGUGAGG CUGAUGAG X CGAA AGUACAC GUGUACU A CCUCACU 8750 CACGAGU CUGAUGAG X CGAA AGGUAGU ACUACCU C ACUCGUG 8754 GGAUCAC CUGAUGAG X CGAA AGUGAGG CCUCACU C GUGAUCC 8760 GUGGUGG CUGAUGAG X CGAA AUCACGAJ UCGUGAU C CCACCAC 8799 GUGUGUC CUGAUGAG X CGAA AGCUGUC GACAGCU A GACACAC 8808 UUGACUG CUGAUGAG X CGAA AGUGUGU ACACACU C CAGUCAA 8813 AGGAGUU CUGAUGAG X CGAA ACUGGAG CUCCAGU C AACUCCU 8818 UAGCCAG CUGAUGAG X CGAA AGUUGAC GUCAACU C CUGGCUA 8825 UGUUGCC CUGAUGAG X CGAA AGCCAGG CCUGGCU A GGCAACA 8834 ACAUGAU CUGAUGAG X CGAA AUGUUGC GCAACAU C AUCAUGU 8837 CAUACAU CUGAUGAG X CGAA AUGAUGU ACAUCAU C AUGUAUG 88'70 UCAUCAA CUGAUGAG X CGAA AUCAUCC GGAUGAU U UUGAUGA 8872 AGUCAUC CUGAUGAG X CGAA AAAUCAU AUGAUUU U GAUGACU 8884 GGAGAAG CUGAUGAG X CGAA AGUGAGU ACUCACU U CUUCUCC 8885 UGGAGAA CUGAUGAG X CGAA AAGUGAG CUCACUU C UUCUCCA 8887 GAUGGAG CUGAUGAG X CGAA AGAAGUG CACUUCU U CUCCAUC 8888 GGAUGGA CUGAUGAG X CGAA AAGAAGU ACUUCUU C UCCAUCC 8890 AAGGAUG CUGAUGAG X CGAA AGAAGAA UUCUUCU C CAUCCUU 8894 CUAGAAG CUGAUGAG X CGAA AUGGAGA UCUCCAU C CUUCUAG 8897 GGGCUAG CUGAUGAG X CGAA AGGAUGG CCAUCCU U CUAGCCC 8898 UGGGCUA CUGAUGAG X CGAA AAGGAUG CAUCCUU C UAGCCCA 8900 CCUGGGC CUGAUGAG X CGAA AGAAGGA UCCUUCU A GCCCAGG 8915 CCUUUUC CUGAUGAG X CGAA AGCUGUU AACAGCU U GAAAAGG 8952 AUGGAGU CUGAUGAG X CGAA ACAGGCC GGCCUGU U ACUCCAU 8953 AAUGGAG CUGAUGAG X CGAA AACAGGC GCCUGUU A CUCCAUU 8956 CUCAAUG CUGAUGAG X CGAA AGUAACA UGUUACU C CAUUGAG 8960 GUGGCUC CUGAUGAG X CGAA AUGGAGU ACUCCAU U GAGCCAC 8969 GUAGGUC CUGAUGAG X CGAA AGUGGCU AGCCACU U GACCUAC WO 99/55847 PCT[US99/09027 Pos. Ribozyme Substrate 8975 UCUGAGG CUGAUGAG X CGAA AGGUCAA UUGACCU A CCUCAGA 8979 AUGAUCU CUGAUGAG X CGAA AGGUAGG CCUACCU C AGAUCAU 8984 GUUGAAU CUGAUGAG X CGAA AUCUGAG CUCAGAU C AUUCAAC 8987 GUCGUUG CUGAUGAG X CGAA AUGAUCU AGAUCAU U CAACGAC 8988 AGUCGUU CUGAUGAG X CGAA AAUGAUC GAUCAUU C AACGACU 8996 GACCAUG CUGAUGAG X CGAA AGUCGUU AACGACU C CAUGGUC 9003 GCGCUAA CUGAUGAG X CGAA ACCAUGG CCAUGGU C UUAGCGC 9005 AUGCGCU CUGAUGAG X CGAA AGACCAU AUGGUCU U AGCGCAU 9006 AAUGCGC CUGAUGAG X CGAA AAGACCA UGGUCUU A GCGCAUU 9013 GAGUGAG CUGAUGAG X CGAA AUGCGCU AGCGCAU U CUCACUC 9014 GGAGUGA CUGAUGAG X CGAA AAUGCGC GCGCAUU C UCACUCC 9016 AUGGAGU CUGAUGAG X CGAA AGAAUGC GCAUUCU C ACUCCAU 9020 AACUAUG CUGAUGAG X CGAA AGUGAGA UCUCACU C CAUAGUU 9024 GAGUAAC CUGAUGAG X CGAA AUGGAGU ACUCCAU A GUUACUC 9027 GGAGAGU CUGAUGAG X CGAA ACUAUGG CCAUAGU U ACUCUCC 9028 UGGAGAG CUGAUGAG X CGAA AACUAUG CAUAGUU A CUCUCCA 9031 ACCUGGA CUGAUGAG X CGAA AGUAACU AGUUACU C UCCAGGU 9033 UCACCUG CUGAUGAG X CGAA AGAGUAA UUACUCU C CAGGUGA 9044 CCCUAUU CUGAUGAG X CGAA AUCUCAC GUGAGAU C AAUAGGG 9048 GCCACCC CUGAUGAG X CGAA AUUGAUC GAUCAAU A GGGUGGC 9057 AGGCAUG CUGAUGAG X CGAA AGCCACC GGUGGCU U CAUGCCU 9058 GAGGCAU CUGAUGAG X CGAA AAGCCAC GUGGCUU C AUGCCUC 9105 CUGGCCC CUGAUGAG X CGAA AUGUCUC GAGACAU C GGGCCAG 9169 GAAGAGG CUGAUGAG X CGAA ACUUGCC GGCAAGU A CCUCUUC 9173 AGUUGAA CUGAUGAG X CGAA AGGUACU AGUACCU C UUCAACU 9175 CCAGUUG CUGAUGAG X CGAA AGAGGUA UACCUCU U CAACUGG 9176 CCCAGUU CUGAUGAG X CGAA AAGAGGU ACCUCUU C AACUGGG 9188 UGGUCCU CUGAUGAG X CGAA ACUGCCC GGGCAGU A AGGACCA 9200 UGAGUUU CUGAUGAG X CGAA AGCUUGG CCAAGCU C AAACUCA 906 UUGGAGU CUGAUGAG X CGAA AGUUUGA UCAAACU C ACUCCAA WO 99/55847 PTU9/92 PCT[US99/09027 Pos. Ribozyme Substrate 9210 GGGAUUG CUGAUGAG X CGAA AGUGAGU ACUCACU C CAAUCCC 9215 CGGCCGG CUGAUGAG X CGAA AUUGGAG CUCCAAU C CCGGCCG 9261 CCGCUGU CUGAUGAG X CGAA ACCAGCA UGCUGGU U ACAGCGG 9262 CCCGCUG CUGAUGAG X CGAA AACCAGC GCUGGUU A CAGCGGG 9294 CGGGCAC CUGAUGAG X CGAA AGACAGG CCUGUCU C GUGCCCG 9313 CCACAUA CUGAUGAG X CGAA ACCAGCG CGCUGGU U UAUGUGG 9314 ACCACAU CUGAUGAG X CGAA AACCAGC GCUGGUU U AUGUGGU 9315 CACCACA CUGAUGAG X CGAA AAACCAG CUGGUUU A UGUGGUG 9409 AAAAGGG CUGAUGAG X CGAA AtJGGCCU AGGCCAU C CCCUUUU 9414 AAAAAAA CUGAUGAG X CGAA AGGGGAU AUCCCCU U UUUUUUU Where represents stem 11 region of a 111- ribozyme (Hertel et al., 1992 Nucleic Acids Res. 3252). The length of stem 11 may be 2 base-pairs.

WO 99/55847 PCTIUS99/09027 94 Table VUI: HCV Hairpin (HIP) Ribozyme and Target Sequence Pos. Ribozyme Sequence Substrate CCCCCA AGAA GGGG ACCAGAGAAACA X GUACAUUACCUGGEJA CCCC CGAU UGGGGG 59 CGUGAA AGAA GUAG ACCAGAGAAACA X GUACAUUACCUGGUA CUAC UGUC UUCACG 109 CCUGGA AGAA GCAC ACCAGAGAAACA X GUACAUUACCUGGUA GUGC AGCC UCCAGG 209 GCAUUG AGAA GGUU ACCAGAGAAACA X GUACAUUACCUGGUA AACC CGCU CAAUGC 290 CUAUCA AGAA GUAC ACCAGAGAAACA X GUACAEJUACCUGGUA GUAC UGCC UGAUAG 390 GUGGGC AGAA GUAG ACCAGAGAAACA X GUACAUUACCUGGUA CUAC CGCC GCCCAC 393 COUGUG AGAA GCGG ACCAGAGAAACA X GUACAUUACCUGGUA CCGC CGCC CACAGG 427 CCAACG AGAA GACC ACCAGAGAAACA X GUACAUUACCUGGUA GGUC AGAU CGUUGG 505 GGUUGC AGAA GUUC ACCAGAGAAACA X GUACAUUACCUGGUA GAAC GGUC GCAACC 549 CCUCGG AGAA GCGA ACCAGAGAAACA X GUACAUUACCUGGUA UCGC CGAC CCGAGG 574 UACCCA AGAA GAGC ACCAGAGAAACA X GUACAUUACCUGGUA GCUC AGCC UGGGUA 645 GCCGGG AGAA GCGG ACCAGAGAAACA X GUACAUUACCUGGUA CCGC GGCU CCCGGC 652 CAACUA AGAA GGGA ACCAGAGAAACA X GUACAUUACCUGGUA UCCC GGCC UAGUUG 671 CCGGGG AGAA GUGG ACCAGAGAAACA X GUACAUUACCEJGGUA CCAC GGAC CCCCGG 726 CGGCGA AGAA GCAC ACCAGAGAAACA X GUACAUUACCUJGGUA GUGC GGCU UCGCCG 734 CAUGAG AGAA GCGA ACCAGAGAAACA X GUACAUUACCUGGUA UCGC CGAC CUCAUG 754 CCGACG AGAA GAAU ACCAGAGAAACA X GUACAUUACCUGGUA AUUC CGCU CGUCGG 852 AAGAGC AGAA GGGC ACCAGAGAAACA X GUACAUUACCUGGUA GCCC GGUU GCUCUU 883 CAGGAC AGAA GGGC ACCAGAGAAACA X GUACAUUACCUGGUA GCCC UGCU GUCCUG 886 AAACAG AGAA GCAG ACCAGAGAAACA X GUACAUUACCUGGUA CUGC UGUC CUGUUU 891 UGGUCA AGAA GGAC ACCAGAGAAACA X GUACAUUACCUGGUA GUCC UGUU UGACCA 905 AGCGGA AGAA GGGA ACCAGAGAAACA X GUACAUUACCUGGUA UCCC AGCU UCCGCU 911 CUGAUA AGAA GAAG ACCAGAGAAACA X GUACAUUACCUGGUA CUUC CGCU UAUCAG 960 AGUUGG AGAA GUCA ACCAGAGAAACA X GUACAUUACCUGGUA UGAC UGCU CCAACU 1050 CCCAAC AGAA GGAG ACCAGAGAAACA X GUACAUUACCUGGUA CUCC CGUU GUUGGG 1145 GAAAGC AGAA GCCC ACCAGAGAAACA X GUACAUUACCUGGUA GGGC GGCC GCUUUC 1148 ACAGAA AGAA GCCG ACCAGAGAAACA X GUACAUUACCUGGUA CGGC CGCU UUCUGU I WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Sequence Substrate 1155 UGGCGG AGAA GAAA ACCAGAGAAACA X GUACAUtJACCUGGUA UUUC UGUU CCGCCA 1185 AAACGG AGAA GCAG ACCAGAGAAACA X GUACAUUACCUGGUA CUGC GGAU CCGUUU 1190 GAGGAA AGAA GAUC ACCAGAGAAACA X GUACAUUACCUGGUA GAUC CGUU UUCCUC 1207 GEJGAAC AGAA GGGA ACCAGAGAAACA X GUACAUUACCUGGUA UCCC AGUU GUUCAC 1331 CACUAG AGAA GUUG ACCAGAGAAACA X GUACAUUACCUGGUA CAAC AGCC CUAGUG 1357 UGUGGG AGAA GGAG ACCAGAGAAACA X GUACAUUACCUGGUA CUCC GGAU CCCACA 1370 AUCCAC AGAA GCUU ACCAGAGAAACA X GUACAUUACCUGGUA AAGC UGUC GUGGAU 1562 UCUCUG AGAA GGCC ACCAGAGAAACA X GUACAUUACCUGGUA GGCC GGCC CAGAGA 1576 UUUAUG AGAA GGAU ACCAGAGAAACA X GUACAUUACCUGGUA AUCC AGCU CAUAAA 1596 UGUGCC AGAA GCCA ACCAGAGAAACA X GUACAUUACCUGGUA UGGC AGCU GGCACA 1616 GUUCAG AGAA GUCC ACCAGAGAAACA X GUACAUUACCUGGUA GGAC UGCC CUGAAC 1663 GCGUAG AGAA GUGC ACCAGAGAAACA X GUACAUUACCUGGUA GCAC tJGUU CUACGC 1692 CUGGGC AGAA GGAC ACCAGAGAAACA X GUACAUUACCUGGUA GUCC GGAU GCCCAG 1713 AGCUGC AGAA GGCC ACCAGAGAAACA X GUACAUUACCUGGUA GGCC AGCU GCAGCU 1719 CGAUGG AGAA GCAG ACCAGAGAAACA X GUACAUUACCUGGUA CUGC AGCU CCAUCG 1797 AAUGCC AGAA GUAA ACCAGAGAAACA X GUACAUUACCUGGUA UUAC UGCU GGCAUU 1863 GGGUGA AGAA GUAC ACCAGAGAAACA X GUACAUUACCUGGUA GUAC UGUU UCACCC 1880 CACUAC AGAA GGGC ACCAGAGAAACA X GUACAUUACCUGGUA GCCC UGUU GUAGUG 1898 GGACCG AGAA GUCG ACCAGAGAAACA X GUACAUUACCUGGUA CGAC CGAU CGGUCC 1903 GCACCG AGAA GAUC ACCAGAGAAACA X GUACAUUACCUGGUA GAUC GGUC CGGUGC 1943 CAGCAC AGAA GUCU ACCAGAGAAACA X GUACAUUACCUGGUA AGAC AGAU GUGCUG 1951 UUGAGA AGAA GCAC ACCAGAGAAACA X GUACAUUACCUGGUA GUGC UGCU UCUCAA 1969 UGUGGC AGAA GCGU ACCAGAGAAACA X GUACAUUACCUGGUA ACGC GGCC GCCACA 2082 CCGUGG AGAA GGUC ACCAGAGAAACA X GUACAUUACCUGGUA GACC UGCC CCACGG 2090 AAAGCA AGAA GUGG ACCAGAGAAACA X GUACAUUACCUGGUA CCAC GGAU UGCUUU 2316 GCUCCG AGAA GUCC ACCAGAGAAACA X GUACAUUACCUGGUA GGAC AGAU CGGAGC 2328 GCAGCG AGAA GAGC ACCAGAGAAACA X GUACAUUACCUGGUA GCUC AGCC CGCUGC 2332 AGCAGC AGAA GGCU ACCAGAGAAACA X GUACAUUACCUGGUA AGCC CGCU GCUGCU 2335 GACAGC AGAA GCGG ACCAGAGAAACA X GUACAUUACCUGGUA CCGC UGCU GCUGUC 2338 GUGGAC AGAA GCAG ACCAGAGAAACA X GUACAUUACCUGGUA CtJGC UGCU GUCCAC WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Sequence Substrate 2341 GUCGtJG AGAA GCAG ACCAGAGAAACA X GUACAUUACCUGGJA CUGC UGUC CAGGAC 2370 UGAAGG AGAA GGGA ACCAGAGAAACA X GUACAUUACCUGGUA UCCC UGUU CCUUCA 2390 GGACAG AGAA GGUA ACCAGAGAAACA X GUACAUUACCUGGUA UACC GGCU CUGUCC 2395 CCAGUG AGAA GAGC ACCAGAGAAACA X GUACAUUACCUGGUA GCUC UGUC CACUGG 2465 GGAGAC AGAA GCUG ACCAGAGAAACA X GUACAUUACCUGGUA CAGC GGUU GUCUCC 2522 GCGCGC AGAA GCCA ACCAGAGAAACA X GUACAUUACCUGGUA UGGC GGAC GCGCGC 2541 UCCACA AGAA GGCA ACCAGAGAAACA X GUACAUUACCUGGUA UGCC UGCU UGUGGA 2557 GCUAUC AGAA GCAU ACCAGAGAAACA X GUACAUUACCUGGUA AUGC UGCU GAUAGC 2579 CUCUAG AGAA GCCU ACCAGAGAAACA X GUACAUUACCUGGUA AGGO CGCC CUAGAG 2627 AAUGCC AGAA GCUC ACCAGAGAAACA X GUACAUUACCUGGUA GAGC GGAU GGCAUU 2663 GUACCA AGAA GCAC ACCAGAGAAACA X GUACAUUACCUGGUA GUGC CGCC UGGUAC 2725 AGGAGC AGAA GCCA ACCAGAGAAACA X GUACAUUACCUGGUA UGGC CGCU GCUCCU 2728 AGCAGG AGAA GCGG ACCAGAGAAACA X GUACAUUACCUGGUA CCGC UGCU CCUGCU 2734 AGCAGG AGAA GGAG ACCAGAGAAACA X GUACAUUACCUGGUA CUCC UGCU CCUGCU 2740 AACGCC AGAA GGAG ACCAGAGAAACA X GUACAUUACCUGGUA CUCC UGCU GGCGUU 2978 UGGGIJG AGAA GCAC ACCAGAGAAACA X GUACAUUACCUGGUA GUGC GGCC CACCCA 3016 AUGGCG AGAA GGAG ACCAGAGAAACA X GUACAUUACCUGGUA CUCC UGCU CGCCAU 3030 UGAGCG AGAA GAGA ACCAGAGAAACA X GUACAUUACCUGGUA UCUC GGUC CGCUCA 3034 ACCAUG AGAA GACC ACCAGAGAAACA X GUACAUUACCUGGUA GGUC CGCU CAUGGU 3260 GAAGAC AGAA GGCU ACCAGAGAAACA X GUACAUUACCUGGUA AGCC CGUC GUCUUC 3340 GAGACG AGAA GUCC ACCAGAGAAACA X GUACAUUACCUGGUA GGAC UGCC CGUCUC 3344 GGCGGA AGAA GGCA ACCAGAGAAACA X GUACAUUACCUGGUA UGCC CGUC UCCGCC 3350 CCUUCG AGAA GAGA ACCAGAGAAACA X GUACAUUACCUGGUA UCUC CGCC CGAAGG 3383 GCUAUC AGAA GGUC ACCAGAGAAACA X GUACAUUACCUGGUA GACC GGCC GAUAGC 3431 GGCGUA AGAA GUGA ACCAGAGAAACA X GUACAUUACCUGGUA UCAC GGCC UACGCC 3581 GUGGAA AGAA GUCC ACCAGAGAAACA X GUACAUUACCUGGUA GGAC CGUC UUCCAC 3597 UCUUUG AGAA GGCG ACCAGAGAAACA X GUACAUUACCUGGUA CGCC GGCU CAAAGA 3615 CUUUUG AGAA GGCU ACCAGAGAAACA X GUACAUUACCUGGUA AGCC GGCC CAAAAG 3669 CAUGCC AGAA GACG ACCAGAGAAACA X GUACAUUACCUGGUA CGUC GGCU GGCAUG 3725 AUAGAG AGAA GAGC ACCAGAGAAACA X GUACAUUACCUGGUA GCUC GGAC CUCUAU WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Sequence Substrate 3752 AAUGAC AGAA GCAU ACCAGAGAAACA X GUACAUUACCUGGUA AUGC UGAC GUCAUU 3771 CACCGC AGAA GCGC ACCAGAGAAACA X GUACAUUACCUGGUA GCGC CGAC GCGGUG 3783 UCCCCC AGAA GUCA ACCAGAGAAACA X GUACAtJUACCUGGJA UGAC GGUC GGGGGA 3799 CUGGGG AGAA GUAG ACCAGAGAAACA X GUACAUUACCUGGUA CUAC UGUC CCCCAG 3807 AGACGG AGAA GGGG ACCAGAGAAACA X GUACAUUACCUGGUA CCCC AGAC CCGUCU 3812 AUAGGA AGAA GGUC ACCAGAGAAACA X GUACAUUACCUGGUA GACC CGUC UCCUAU 3847 GGGCAG AGAA GUGG ACCAGAGAAACA X GUACAUUACCUGGUA CCAC UGCU CUGCCC 13852 CCGAAG AGAA GAGC ACCAGAGAAACA X GUACAUUACCUGGUA GCUC UGCC

CUUCGG

3887 GCACAC AGAA GCCC ACCAGAGAAACA X GUACAUUACCUGGUA GGGC UGCU GUGUGC 3932 AGACUC AGAA GGUA ACCAGAGAAACA X GUACAUUACCUGGUA UACC CGUU GAGUCU 3958 ACCGGG AGAA GCAU ACCAGAGAAACA X GUACAUUACCUGGUA AUGC GGUC CCCGGU 3965 CGUGAA AGAA GGGG ACCAGAGAAACA X GUACAUUACCUGGUA CCCC GGUC UUCACG 3992 CGGUAC AGAA GGGG ACCAGAGAAACA X GUACAUUACCUGGUA CCCC GGCC GUACCG 4064 GUACGC AGAA GGCA ACCAGAGAAACA X GUACAUUACCUGGUA UGCC GGCU GCGUAC 4076 CCCUUG AGAA GCGU ACCAGAGAAACA X GUACAUUACCUGGUA ACGC AGCC CAAGGG 4112 GGCGGC AGAA GAUG ACCAGAGAAACA X GUACAUUACCUGGUA CAUC UGUU GCCGCC 4163 GUUGGG AGAA GUAC ACCAGAGAAACA X GUACAUUACCUGGUA GUAC CGAC CCCAAC 4244 UCCACC AGAA GCAA ACCAGAGAAACA X GUACAUUACCUGGUA UUGC CGAC GGUGGA 4304 AGUCGA AGAA GUUG ACCAGAGAAACA X GUACAUUACCUGGUA CAAC UGAC UCGACU 4334 GUCCAG AGAA GUGC ACCAGAGAAACA X GUACAUUACCUGGUA GCAC AGUC CUGGAC 4355 CGCUCC AGAA GUCU ACCAGAGAAACA X GUACAUUACCUGGUA AGAC GGCU GGAGCG 4366 ACGACG AGAA GCGC ACCAGAGAAACA X GUACAUUACCUGGUA GCGC GGCU CGUCGU 4441 GUGUUG AGAA GAGC ACCAGAGAAACA X GUACAUUACCUGGUA GCUC UGUC CAACAC 4621 CCGCUA AGAA GUAU ACCAGAGAAACA X GUACAUUACCUGGUA AUAC CGAC UAGCGG 4652 UAGAGC AGAA GUUG ACCAGAGAAACA X GUACAUUACCUGGUA CAAC AGAC GCUCUA 4724 GAAAUC AGAA GUCU ACCAGAGAAACA X GUACAUUACCUGGUA AGAC AGUC GAUUUC 4734 GAUCCA AGAA GAAA ACCAGAGAAACA X GUACAUUACCUGGUA UUUC AGCU UGGAUC 4861 CCCGAG AGAA GUUC ACCAGAGAAACA X GUACAUUACCUGGUA GAAC GGCC CUCGGG 4886 ACACAG AGAA GAAG ACCAGAGAAACA X GUACAUUACCUGGUA CUUC GGUC CUGUGU 4937 AGUCUC AGAA GGCG ACCAGAGAAACA X GUACAUUACCUGGUA CGCC CGCU GAGACU WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Sequence Substrate 4988 CUGGCA AGAA GGCA ACCAGAGAAACA X GUACAJUACCJGGUJA UGCC CGUC UGCCAG 5059 GEJUUGG AGAA GGAA ACCAGAGAAACA X GUACAUUACCUGGJA UUCC EJGUC CCAAAC 5179 GGUUUA AGAA GUAU ACCAGAGAAACA X GUACAUUACCUGGUA AEJAC GGCU UAAACC 5212 CUAUAC AGAA GGGG ACCAGAGAAACA X GUACAUUACCUGGUA CCCC UGCU GUAUAG 5231 AEUUUG AGAA GCUC ACCAGAGAAACA X GUACAUUACCUGGUA GAGC CGUU CAAAAU 5291 CAGGUC AGAA GACA ACCAGAGAAACA X GEACAUUACCUGGUA UGUC GGCC GACCUG 5294 CUCCAG AGAA GCCG ACCAGAGAAACA X GUACAUUACCUGGUA CGGC CGAC CUGGAG 5345 GGCCAG AGAA GCAA ACCAGAGAAACA X GUACAUUACCUGGUA UUGC AGCU CUGGCC 5417 AACAAC AGAA GGCC ACCAGAGAAACA X GUACAUUACCUGGUA GGCC GGCU GUUGUU 5420 GGGAAC AGAA GCCG ACCAGAGAAACA X GUACAUUACCUGGUA CGGC UGUU GUUCCC 5509 UCGGCG AGAA GCAU ACCAGAGAAACA X GUACAUUACCUGGUA AUGC AGCU CGCCGA 5521 UGCUUG AGAA GCUC ACCAGAGAAACA X GUACAUUACCUGGUA GAGC AGUU CAAGCA 5576 GGGAGC AGAA GCCU ACCAGAGAAACA X GUACAUUACCUGGUA AGGC CGCU GCUCCC 5579 CACGGG AGAA GCGG ACCAGAGAAACA X GUACAUUACCUGGUA CCGC UGCU CCCGUG 5683 UUCCCA AGAA GAGU ACCAGAGAAACA X GUACAUUACCUGGUA ACUC UGCC UGGGAA 5710 AAUGCC AGAA GUGA ACCAGAGAAACA X GUACAUUACCUGGUA UCAC UGAU GGCAUU 5723 GAUAGA AGAA GUGA ACCAGAGAAACA X GUACAUUACCUGGUA UCAC AGCC UCEJAUC 5736 UGAGCG AGAA GGUG ACCAGAGAAACA X GUACAUUACCUGGUA CACC AGUC CGCUCA 5740 GUGGUG AGAA GACU ACCAGAGAAACA X GUACAUUACCUGGUA AGUC CGCU CACCAC 5764 AUGUUG AGAA GGAG ACCAGAGAAACA X GUACAUUACCUGGUA CUCC UGUU CAACAU 5792 GAGEJUG AGAA GCCA ACCAGAGAAACA X GUACAUUACCUGGUA UGGC UGCU CAACUC 5816 GGCCGA AGAA GCAC ACCAGAGAAACA X GUACAUUACCUGGUA GUGC UGCU UCGGCC 5822 CACGAA AGAA GAAG ACCAGAGAAACA X GUACAUUACCUGGUA CEJUC GGCC UUCGUG 5966 GUCCUC AGAA GAGG ACCAGAGAAACA X GUACAUUACCUGGUA CCUC CGCC GAGGAC 6094 GCUAUC AGAA GGUU ACCAGAGAAACA X GUACAUUACCUGGUA AACC GGCU GAUAGC 6178 GAGAGG AGAA GAGU ACCAGAGAAACA X GUACAUUACCUGGUA ACUC AGAU CCUCUC 6189 UGGUGA AGAA GGAG ACCAGAGAAACA X GUACAUUACCUGGUA CUCC AGCC UCACCA 6205 UUCAGC AGAA GAGU ACCAGAGAAACA X GUACAUUACCUGGUA ACUC AGCU GCUGAA 6208 CUCUOC AGAA GCUG ACCAGAGAAACA X GUACAUUACCUGGUA CAGC UGCU GAAGAG 623 GCGUGG AGAA GUCC ACCAGAGAAACA X GUACAUUACCUGGUA GGAC UGCU CCACGC WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Sequence Substrate 6261 GCCACG AGAA GGAG ACCAGAGAAACA X GUACAUUACCUGGUA CUCC GGCU CGUGGC 6308 CUUGAA AGAA GUCA ACCAGAGAAACA X GUACAUUACCUGGUA UGAC UGAC UUCAAG 6328 AGCUUG AGAA GGAG ACCAGAGAAACA X GUACAUUACCUGGUA CUCO AGUC CAAGCU 6340 AAUUUC AGAA GGAG ACCAGAGAAACA X GUACAUUACCtJGGUA CUCC UGCC GAAAUU 6426 CACAUG AGAA GGUG ACCAGAGAAACA X GUACAUUACCUGGUA CACC UGCC CAUGUG 6465 UCAUGG AGAA GUUU ACCAGAGAAACA X GUACAUUACCUGGUA AAAC GGUU CCAUGA 6599 CUCUUC AGAA GCCA ACCAGAGAAACA X GUACAUUACCUGGUA UGGC UGCU GAAGAG 6692 UUCGGG AGAA GGGA ACCAGAGAAACA X GUACAUUACCUGGUA UCCC GGCC CCCGAA 6727 CUGUGC AGAA GCAC ACCAGAGAAACA X GUACAUUACCUGGUA GUGC GGUU GCACAG 6753 GGAGAG AGAA GCAC ACCAGAGAAACA X GUACAUUACCUGGUA GUGC AGAC CUCUCC 6817 CAUGGG AGAA GUGA ACCAGAGAAACA X GUACAUUACCUGGUA UCAC AGCU CCCAUG 6839 UGCCAC AGAA GGUU ACCAGAGAAACA X GUACAUUACCUGGUA AACC GGAU GUGGCA 6869 GGAGGG AGAA GUGA ACCAGAGAAACA X GUACAUUACCUGGUA UCAC CGAC CCCUCC 6939 CUGAAG AGAA GGCC ACCAGAGAAACA X GUACAUUACCUGGUA GGCC AGCU CUUCAG 7007 GUCAGC AGAA GGGG ACCAGAGAAACA X GUACAUUACCUGGUA CCCC GGAC GCUGAC 7013 GAUGAG AGAA GCGU ACCAGAGAAACA X GUACAUUACCUGGUA ACGC UGAC CUCAUC 7114 GCUCGA AGAA GGUC ACCAGAGAAACA X GUACAUUACCUGGUA GACC CGCU UCGAGC 7148 UGCUGC AGAA GAUA ACCAGAGAAACA X GUACAUUACCUGGUA UAtJC CGUU GCAGCA 7214 GUUGUA AGAA GGGC ACCAGAGAAACA X GUACAUUACCUGGUA GCCC GGAU UACAAC 7253 GACGUA AGAA GGAC ACCAGAGAAACA X GUACAUUACCUGGUA GUCC GGAC UACGUC 7291 GUGGUA AGAA GCAA ACCAGAGAAACA X GUACAUUACCUGGUA UUGC CGCC UACCAC 7315 CGUGGA AGAA GUAU ACCAGAGAAACA X GUACAUUACCUGGUA AUAC CGCC UCCACG 7337 CAGAAC AGAA GUCC ACCAGAGAAACA X GUACAUUACCUGGUA GGAC GGUU GUUCUG 7367 CGCCAA AGAA GAAG ACCAGAGAAACA X GUACAUUACCUGGUA CUUC UGCC UUGGCG 7401 AUCCGG AGAA GCCG ACCAGAGAAACA X GUACAUUACCUGGUA CGGC AGCU CCGGAU 7407 CCGACG AGAA GGAG ACCAGAGAAACA X GUACAUUACCUGGUA CUCC GGAU CGUCGG 7415 GUCAAC AGAA GACG ACCAGAGAAACA X GUACAUUACCUGGUA CGUC GGCC GUUGAC 7418 GCUGUC AGAA GCCG ACCAGAGAAACA X GUACAUUACCUGGUA CGGC CGUU GACAGC 7439 GGGAGG AGAA GUCG ACCAGAGAAACA X GUACAUUACCUGGUA CGAC CGCC CCUCCC 7448 GGUCUG AGAA GGAG ACCAGAGAAACA X GUACAUUACCUGGUA CUCC CGAU CAGACC WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Sequence Substrate 7453 UCAGAG AGAA GAUC ACCAGAGAAACA X GUACAUUACCUGGUA GAtJC AGAC CUCUGA 7460 ACCGUC AGAA GAGG ACCAGAGAAACA X GUACAUUACCUGGUA CCUC UGAC GACGGU 7481 CUCAAC AGAA GAUU ACCAGAGAAACA X GUACAUUACCUGGUA AAUC UGAC GUUGAG 7535 GCUGAG AGAA GGGU ACCAGAGAAACA X GUACAUUACCUGGUA ACCC UGAU CUCAGC 7593 UUGAGC AGAA GACG ACCAGAGAAACA X GUACAUUACCUGGUA CGUC UGCUJ GCUCAA 7596 ACAUUG AGAA GCAG ACCAGAGAAACA X GUACAUUACCUGGUA CUGC UGCU CAAUGU 7627 GGCGUG AGAA GGGC ACCAGAGAAACA X GUACAUUACCUGGUA GCCC UGAU CACGCC 7660 UUGAUG AGAA GCUU ACCAGAGAAACA X GUACAUUACCUGGUA AAGC UGCC CAUCAA 7687 UGACGC AGAA GAGA ACCAGAGAAACA X GUACAUUACCUGGUA UCUC UGCU GCGUCA 7764 CUUGCA AGAA GUCA ACCAGAGAAACA X GUACAUUACCUGGUA UGAC AGAC UGCAAG 7870 GGGGGC AGAA GCUU ACCAGAGAAACA X GUACAUUACCUGGUA AAGC UGAC GCCCCC 7956 ACACGG AGAA GAUG ACCAGAGAAACA X GUACAUUACCUGGUA CAUC CGCU CCGUGU 7975 UCUUCC AGAA GGUC ACCAGAGAAACA X GUACAUUACCUGGUA GACC UGCU GGAAGA 8066 AAGGCG AGAA GGCU ACCAGAGAAACA X GUACAUUACCUGGUA AGCC AGCU CGCCUU 8087 UCCCAG AGAA GGGA ACCAGAGAAACA X GUACAUUACCUGGUA UCCC AGAC CUGGGA 8172 ACUGGA AGAA GUAC ACCAGAGAAACA X GUACAUUACCUGGUA GUAC GGAU UCCAGU 8262 CAAAGC AGAA GGUG ACCAGAGAAACA X GUACAUUACCUGGUA CACC CGCU GCUUUG 8265 AGUCAA AGAA GCGG ACCAGAGAAACA X GUACAUUACCUGGUA CCGC UGCU UUGACU 8374 AUGUAG AGAA GCUC ACCAGAGAAACA X GUACAUUACCUGGUA GAGC GGCU CUACAU 8395 GAAUUA AGAA GGGG ACCAGAGAAACA X GUACAUUACCUGGUA CCCC UGAC UAAUUC 8452 CUAGUC AGAA GCAC ACCAGAGAAACA X GUACAUUACCUGGUA GUGC UGAC GACUAG 8501 UCGACA AGAA GCAG ACCAGAGAAACA X GUACAUUACCUGGUA CUGC GGCC UGUCGA 8505 CAGCUC AGAA GGCC ACCAGAGAAACA X GUACAUUACCUGGUA GGCC UGUC GAGCUG 8639 GGGGGG AGAA GAGU ACCAGAGAAACA X GUACAUUACCUGGUA ACUC UGCC CCCCCC 8656 GGUUGG AGAA GGUC ACCAGAGAAACA X GUACAUUACCUGGUA GACC CGCC CCAACC 8711 GUGCGC AGAA GACA ACCAGAGAAACA X GUACAUUACCUGGUA UGUC GGUC GCGCAC 8911 UUUUCA AGAA GUUC ACCAGAGAAACA X GUACAUUACCUGGUA GAAC AGCU UGAAAA 8935 CCGUAG AGAA GACA ACCAGAGAAACA X GUACAUUACCUGGUA UGUC AGAU CUACGG 8980 UGAAUG AGAA GAGG ACCAGAGAAACA X GUACAUUACCUGGUA CCUC AGAU CAUUCA 9082 CGCAAG AGAA GUAC ACCAGAGAAACA X GUACAUUACCUGGUA GUAC CGCC CUUGCG WO 99/55847 PCTIUS99/09027 Pos. Ribozyme Sequence Substrate 9133 CCUUGG AGAA GUAG ACCAGAGAAACA X GUACAUUACCUGGUA CUAC UGUC CCAAGG 9218 GGACGC AGAA GGGA ACCAGAGAAACA X GrJACAUUACCUGGUA UCCO GGCC GCGUCC 9229 AAGUCC AGAA GGGA ACCAGAGAAACA X GUACAUUACCUGGUA UCCC AGCU GGACUU 9243 CGAACC AGAA GGAC ACCAGAGAAACA X GUACAUUACCUGGUA GUCC AGCU GGUUCG 9285 GAGACA AGAA GUGA ACCAGAGAAACA X GUACAUUACCUGGUA UCAC AGCC UGUCUC 9289 GCACGA AGAA GGCU ACCAGAGAAACA X GUACAUIJACCUGGUA AGCC UGUC UCGUGC 9300 AGCGGG AGAA GGCA ACCAGAGAAACA X GUACAUUACCUGGUA UGCC CGAC CCCGCU 9306 UAAACC AGAA GGGU ACCAGAGAAACA X GUACAUUACCUGGUA ACCC CGCU GGUUUA 9358 UUGGGG AGAA GGUA ACCAGAGAAACA X GUACAUUACCUGGUA UACC UGCU CCCCAA Where represents stem IV region of a HP ribozyme (Berzal-Her-ranz et aL, 1993, EAMO.J 12, 2567). The length of stem IV may be 2 base-pairs.

WO 99/55847 PCTIUS99/09027 102 Table VII: Additional HCV Conserved Hammerhead rihozyme and target sequence Nos. Name* Pos. Ribozyme Substrate 51 HCV. C-4 8 278 UUGGUGU CUGAUGAG X CGAA ACGUUUG CAAACGU A ACACCAA 2 HCV. C- 60 290 UGUGGGC CUGAUGAG X CGAA ACGGUUG CAACCGU C GCCCACA 3 HCV. C- 175 405 AGGUUGU CUGAUGAG X CGAA ACCGCUC GAGCGGU C ACAACCU 4 HCV.3-118 9418 AAAAAAA CUGAUGAG X CGAA AAAAAAA UEJUUUUU U UUUUUUU HCV.3-145 9445 UAAGAUG CUGAUGAG X CGAA AGCCACC GGUGGCU C CAUCUUA 6 HCV.3-149 9449 GGGCUAA CUGAUGAG X CGAA AUGGAGC GCUCCAU C UtJAGCCC 7 HCV.3-151 9451 jUAGGGCU CUGAUGAG X CGAA AGAUGGA UCCAUCUJ U AGCCCUA 8 HCV.3-152 9452 CUAGGGC CUGAUGAG X CGAA AAGAUGG CCAUCUU A GCCCUAG 9 HCV.3-158 9458 CCGUGAC CUGAUGAG X CGAA AGGGCUA UAGCCCU A GUCACGG 10 HCV.3-161 9461 UAGCCGU CUGAUGAG X CGAA ACUAGGG CCCUAGU C ACGGCUA 11 HCV.3-168 9468 UCACAGC CUGAUGAG X CGAA AGCCGUG CACGGCU A GCUGUGA 12 HCV.3-181 9481 GCUCACG CUGAUGAG X CGAA ACCUUUCI GAAAGGU C CGUGAGC Where represents stem H region of a HH ribozyme (Hertel et al., 1992 Nucleic Acids Res. 3252). The length of stem 11 may be 2 base-pairs.

Core Reference Sequence for Nos. 1-3 HPCCOPR (Acc#L3 8318) 1-600 bp *-.Nucleotide 231 (8 nucleotide upstream of the initiator ATG) has been designated as for the purpose of numbering ribozyme sites in the core protein coding region.

3'-NCR Reference Sequence for Nos. 4-12= D85516 (Acc#D85516) 9301-9535 bp Nucleotide 9301 has been designated as for the purpose of numbering ribozyme sites in the 3'NCR.

position number reflects the reference sequence from HIPCCOPR.

0 Table IX. Inhibition of HCV RNA in OST7 cells Using Multiple Ribozyme Motifs Motif .RPI Number Fluc/Ruc SEM Sequence RPI Motif I Irrelevant Control 0.22 0.03 auccuUGAU 3 GGCAUACACtAUGCGCGaugaucuqcaB RPI Motif I 18738 0.13 0.03 acacuuGAU_,ggcauGcacuaugcgcgauacuaacgcB RPI Motif 1 18739 0.15 0.01 cacgauGAUgqcauGcacuaugcgcgacucauacuaB RPI Motif 1 18740 0.15 0.01 ggcuquGAU~ggcauGcacuaugcgcgacgacacucaB RPI Motif 1 18746 0.10 0.02 cccaauGAU,,qgcauGcacuaugcgcqacuacucggcB RPI Motif 1 18747 0.16 0.02 uuucguGAijggcauGcacuaugcgcggacccaacacB RPI Motif 1 18750 0.15 0.03 ucaqquGAU~ggcauGcacuaugcgcgaguaccacaaB RPI Motif 1 18754 0.12 0.01 gcacuuGAU.,ggcauGcacuaugcgcggcaagcacccB RPI Motif 11 SAC 1.10 0.32 a~u~u~c,,ca cEuAGuGaggcguuagccGau Acqcqa B RPI Motif 11 20339 0.85 0.01 juscscsuscaccUGAuGaggccguuaggccGaaIgggaguB RPI Motif 11 20350 1.04 0.05 gjsuscscsuggcUAuGaggccguuaggccGaaIgcugcaB RPI Motif III Irrelevant Control 1.28 0.07 ggaaaggugugcaaCCGgaggaaacucCCUUCAAGGACAUCGlCCGGGacggcB RPI Motif 111 18704 0.37 0.07 uuccgcagaCGgaggaaacucCCUUCAAGGACGAAAGUCCGGGacuauggB RPI oti II 1805 .42 0.10ccgaga~gagaacucCUUCAGGCGAAGUCGGacuugI RPI Motif 111 18700 0.61 0.16 caggagaCGgaggaaacucCCUUCAAGGACAUCGUCCGGGacuaaggB 0 t4J -j 0 Motif RPI Number Fj,/jc SEM Sequence RPI Motif 111 18701 0.54 0.10 gcacggucUaGgaggaaacucCCUUCAAGGACAUCGtiCCGGGgagaccB RPI Motif 111 18835 0.54 0.04 guguacucacGgaggaaacucCCUUCAAGGACAUCGUCCGGGgguucB Chemical Modifications are indicated as follows: Lower case 2'-O-Methyl Bold (non-italicized): 2'-NH 2 U 2'-C-AIlyI-U G,A= riboGA s phosphorothioate linkages B inverted abasic I ribo Inosine

Claims (10)

1. A compound having the following formula: 3' iH c c a g g A a gs a sa s sc a c a u G G C, A c g a g\ g a G C U 9 u wherein A and G represent adenosine and guanosine ribonucleotides, respectively; a, u, g, and c represent 2'-O-methyl modified adenosine, 2'-O-methyl modified uridine, 2'-O-methyl modified guanosine, 2'-O-methyl modified cytidine nucleotides, respectively; .1 u represents a 2'-C-allyl modified uridine nucleotide; s represents a phosphorothioate linkage; and iH represents inverted abasic moiety.

2. An isolated mammalian cell comprising the compound of claim 1.

3. The isolated mammalian cell of claim 2, wherein said cell is a human cell.

4. A method of administering to a cell a compound of claim 1 comprising contacting said cell with the compound under conditions suitable for said administration. S 15

5. The method of claim 4, wherein said cell is a human cell.

6. A composition comprising the compound according to claim 1 and a pharmaceutically acceptable carrier or diluent.

7. Use of a composition according to claim 6 for the manufacture of a medicament.

8. The use according to claim 7, wherein the medicament is for treating a disease or disorder related to HCV infection.

9. A method for treating a disease or disorder related to HCV infection, wherein the method comprises administering to the subject an effective amount of a compound according to claim 1 or a composition according to claim 6.

10. A compound having the following formula: [I:\DayLib\LIBVV]02884.doc:sxc 3i Mc c a g g A a go a a C a u G G C. A a g" 9g a G C having anti-HCV activity, substantially as hereinbefore described with reference to any one of the examples. Dated 6 November, 2002 Ribozyme Pharmaceuticals, Inc. Patent Attorneys for the Applicantlominated Person SPRUSON FERGUSON *0 o 00%.0 [I:\DayLib\L1BVV]02884.doc:sxc