Antisense modulation of C-reactive protein expression
View Patent ↗Antisense compounds, compositions and methods are provided for modulating the expression of C-reactive protein. The compositions comprise antisense compounds, particularly antisense oligonucleotides, targeted to nucleic acids encoding C-reactive protein. Methods of using these compounds for modulation of C-reactive protein expression and for treatment of diseases associated with expression of C-reactive protein are provided.
1. A method of inhibiting the expression of C-reactive protein in a cell or tissue comprising contacting said cell or tissue with a compound 12 to 30 nucleobases in length targeted to a nucleic acid molecule encoding C-reactive protein, wherein said compound comprises at least an 8 nucleobase portion complementary to region 1361-1410 of SEQ ID NO: 3; wherein said compound specifically hybridizes with at least an 8-nucleobase portion of said nucleic acid molecule encoding C-reactive protein and inhibits the expression of C-reactive protein, so that expression of C-reactive protein is inhibited.
2. The method of claim 1 , wherein the compound is an oligonucleotide.
3. The method of claim 2 , wherein the oligonucleotide comprises at least one modified internucleoside linkage.
4. The method of claim 3 , wherein the at least one modified internucleoside linkage is a phosphorothioate, phosphorodithioate, phosphotriester, aminoalkylphosphotriester, alkyl phosphonates, phosphinate, phosphoramidate, thionophosphoramidate, thionoalkylphosphonate, thionoalkylphosphotriester, selenophosphate, boranophosphate, morpholino, siloxane, sulfide, sulfoxide, sulfone, formacetyl, thioformacetyl, methylene formacetyl, riboacetyl, alkene-containing backbone, sulfamate, methyleneimino, methylenehydrazino, sulfonate, sulfonamide, or amide.
5. The method of claim 3 , wherein the at least one modified internucleoside linkage is a phosphorothioate linkage.
6. The method of claim 5 , wherein all of the internucleoside linkages of the oligonucleotide are phosphorothioate linkages.
7. The method of claim 2 , wherein the oligonucleotide comprises at least one 2′ modified sugar moiety.
8. The method of claim 7 , wherein the at least one 2′ modified sugar moiety is OH, halogen, O-alkyl, S-alkyl, N-alkyl, O-alkenyl, S-alkenyl, N-alkenyl, O-alkynyl, S-alkynyl, N-alkynyl, O-alkyl-O-alkyl, alkaryl, aralkyl, O-alkaryl or O-aralkyl, SH, SCH 3 , OCN, CN, CF 3 , OCF 3 SOCH 3 , SO 2 CH 3 , ONO 2 , NO 2 , N 3 , NH 2 , heterocycloalkyl, heterocycloalkaryl, aminoalkylamino, polyalkylamino, substituted silyl, alkoxyalkoxy, dimethylaminooxyethoxy, allyl, or O-allyl, wherein the alkyl, alkenyl and alkynyl can be substituted or unsubstituted C 1 to C 10 alkyl or C 2 to C 10 alkenyl and alkynyl.
9. The method of claim 7 , wherein the at least one 2′ modified sugar moiety is 2′-O-(2-methoxyethyl) (2′-MOE) sugar moiety.
10. The method of claim 2 , wherein the oligonucleotide comprises at least one modified nucleobase.
11. The method of claim 10 , wherein the at least one modified nucleobase is 5-methylcytosine, 5-hydroxymethyl cytosine, xanthine, hypoxanthine, 2-aminoadenine, 6-alkyladenine, 6-alkylguanine, 2-alkyladenine, 2-alkylguanine, 2-thiouracil, 2-thiothymine, 2-thiocytosine, 5-halouracil, 5-halocytosine, 5-alkynyluracil, 5-alkynylcytosine, 6-azo uracil, 6-azo cytosine, 6-azo thymine, 5-uracil, 4-thiouracil, 8-haloadenine, 8-aminoadenine, 8-thioladenine, 8-thioalkyladenine, 8-hydroxyladenine, 8-haloguanine, 8-aminoguanine, 8-thiolguanine, 8-thioalkylguanine, 8-hydroxylguanine, 5-halo uracil, 5-halo cytosine, 7-methylguanine, 7-methyladenine, 2-F-adenine, 2-amino-adenine, 8-azaguanine, 8azaadenine, 7-deazaguanine, 7-deazaadenine, 3-deazaguanine, 3-deazaadenine, phenoxazine cytidine, phenothiazine cytidine, G-clamp, carbazole cytidine, pyridoindole cytidine, 7-deaza adenine, 7-deaza guanosine, 2-aminopyridine, 2-pyridone, 2-aminopropyladenine, 5-propynyluracil, or 5-propynylcytosine.
12. The method of claim 10 , wherein the at least one modified nucleobase is a 5-methylcytosine.
13. The method of claim 2 , wherein the oligonucleotide is a chimeric oligonucleotide.
14. The method of claim 13 , wherein the chimeric oligonucleotide is a gapmer.
15. The method of claim 14 , wherein the gapmer comprises: a 5′ wing segment; a 3′ wing segment; and a gap segment positioned between said 5′ wing segment and said 3′ wing segment.
16. The method claim 15 , wherein each of said 5′ wing segment and 3′ wing segment comprise at least one 2′-O-(2-methoxyethyl) sugar moiety.
17. The method of claim 15 , wherein the 5′ wing segment comprises five nucleobases and a phosphorothioate or phosphodiester internucleoside linkage, the 3′ wing segment comprises five nucleobases and a phosphorothioate or phosphodiester internucleoside linkage, and the gap segment comprises ten nucleobases.
18. The method of claim 1 , wherein the compound is 20 nucleobases in length.
19. The method of claim 1 , wherein the compound is an oligonucleotide 20 nucleobases in length, wherein the oligonucleotide comprises a gap segment of ten 2′-deoxynucleosides positioned between 5′ and 3′ wing segments of five 2′-O-(2-methoxyethyl)-nucleosides, wherein each internucleoside linkage is a phosphorothioate internucleoside linkage, and wherein each cytosine is a 5-methylcytosine.
20. The method of claim 1 , wherein the compound is 100% complementary to SEQ ID NO: 3.