(SEQ ID NO: 3) 5′-CCAAGAGCACCAAGAACUZ A -3′; (SEQ ID NO: 4) 5′-Z′ B AGUUCUUGGUGCUCUUGG-3′, wherein, Z A is selected from A, U, G, or C, and TB is the first nucleotide at the 5′ terminal of the antisense strand and complementary to Z A ; and the sense strand and antisense strand have the same or different length, wherein the sense strand has a length of 19 to 23 nucleotides, and the antisense strand has a length of 20 to 26 nucleotides.
2 . The siRNA conjugate according to claim 1 , wherein the nucleotide sequence I further comprises nucleotide sequence III, the nucleotide sequence II further comprises nucleotide sequence IV, and the nucleotide sequence III and the nucleotide sequence IV each independently have a length of 1 to 4 nucleotides; the nucleotide sequence III is linked to the 5′ terminal of the nucleotide sequence represented by SEQ ID NO:3, the nucleotide sequence IV is linked to the 3′ terminal of the nucleotide sequence represented by SEQ ID NO:4, and the nucleotide sequence III and the nucleotide sequence IV have the same length and are reverse complementary.
3 . The siRNA conjugate according to claim 2 , wherein the nucleotide sequence III and the nucleotide sequence IV both have a length of one nucleotide, and the nucleotide sequence III has a base of G; or the nucleotide sequence III and the nucleotide sequence IV both have a length of 2 nucleotides, and in the direction from 5′ terminal to 3′ terminal, the nucleotide sequence III has a base composition of AG; or, the nucleotide sequence III and the nucleotide sequence IV both have a length of 3 nucleotides, and in the direction from 5′ terminal to 3′ terminal, the nucleotide sequence III has a base composition of AAG; or, the nucleotide sequence III and the nucleotide sequence IV both have a length of 4 nucleotides, and in the direction from 5′ terminal to 3′ terminal, the nucleotide sequence III has a base composition of CAAG.
4 . The siRNA conjugate according to claim 1 , wherein the nucleotide sequence II further comprises a nucleotide sequence V; the nucleotide sequence V has a length of 1 to 3 nucleotides, and is linked to the 3′terminal of the antisense strand, thereby forming a 3′ overhang terminal of the antisense strand.
5 . The siRNA conjugate according to claim 4 , wherein, the nucleotide sequence V has a length 2 nucleotides; moreover the nucleotide sequence V is 2 continuous thymine deoxyribonucleotides or 2 continuous uridine ribonucleotides, or the nucleotide sequence V is complementary to the nucleotides at the corresponding positions of the target mRNA.
wherein, Z′ B is the first nucleotide at the 5′terminal of the antisense strand, Z A is selected from A, U, G or C, and Z′ B is a nucleotide complementary to Z A .
siAN1 Sense strand: (SEQ ID NO: 8) 5′- CCAAGAGCACCAAGAACUA-3′ Antisense strand: (SEQ ID NO: 9) 5′- UAGUUCUUGGUGCUCUUGGCU-3′ siAN2 Sense strand: (SEQ ID NO: 10) 5′- AGCCAAGAGCACCAAGAACUA-3′ Antisense strand: (SEQ ID NO: 11) 5′- UAGUUCUUGGUGCUCUUGGCUUG-3′.
8 . The siRNA conjugate according to claim 1 , wherein each nucleotide in the sense strand and the antisense strand is independently a fluoro modified nucleotide or a non-fluoro modified nucleotide; wherein the fluoro modified nucleotide is present in the nucleotide sequence represented by SEQ ID NO:3 and the nucleotide sequence represented by SEQ ID NO:4; and in the direction from 5′ terminal to 3′ terminal, the nucleotides at positions 7, 8, 9 of the nucleotide sequence represented by SEQ ID NO:3 are fluoro modified nucleotides; and in the direction from 5′terminal to 3′terminal, the nucleotides at positions 2, 6, 14 and 16 of the nucleotide sequence represented by SEQ ID NO:4 are fluoro modified nucleotides.
9 . The siRNA conjugate according to claim 8 , wherein each non-fluoro modified nucleotide is a methoxy modified nucleotide, and the methoxy modified nucleotide refers to a nucleotide formed by replacing 2′-hydroxy of the ribose group with a methoxy group.
10 . The siRNA conjugate according to claim 9 , wherein in the direction from 5′ terminal to 3′ terminal, the nucleotides at positions 5, 7, 8 and 9 of the nucleotide sequence represented by SEQ ID NO:3 in the sense strand of the siRNA are fluoro modified nucleotides, and the nucleotides at the other positions in the sense strand of the siRNA are methoxy modified nucleotides; and in the direction from 5′ terminal to 3′ terminal, the nucleotides at positions 2, 6, 8, 9, 14 and 16 of the nucleotide sequence represented by SEQ ID NO:4 in the sense strand of the siRNA are fluoro modified nucleotides, and the nucleotides at the other positions in the sense strand of siRNA are methoxy modified nucleotides; or, in the direction from 5′ terminal to 3′ terminal, the nucleotides at positions 5, 7, 8 and 9 of the nucleotide sequence represented by SEQ ID NO:3 in the sense strand of the siRNA are fluoro modified nucleotides, and the nucleotides at the other positions in the sense strand of the siRNA are methoxy modified nucleotides; and in the direction from 5′ terminal to 3′ terminal, the nucleotides at positions 2, 6, 14 and 16 in the nucleotide sequence represented by SEQ ID NO:4 in the antisense strand of the siRNA are fluoro modified nucleotides, and the nucleotides at the other positions in the antisense strand of the siRNA are methoxy modified nucleotides; or, in the direction from 5′ terminal to 3′ terminal, the nucleotides at positions 7, 8 and 9 of the nucleotide sequence represented by SEQ ID NO:3 in the sense strand of the siRNA are fluoro modified nucleotides, and the nucleotides at the other positions in the sense strand of the siRNA are methoxy modified nucleotides; and in the direction from 5′ terminal to 3′ terminal, the nucleotides at positions 2, 6, 14 and 16 of the nucleotide sequence represented by SEQ ID NO:4 in the antisense strand of the siRNA are fluoro modified nucleotides, and the nucleotides at the other positions in the antisense strand of the siRNA are methoxy modified nucleotides.
siAN1-M1 sense strand: (SEQ ID NO: 12) 5′-CmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 13) 5′-UmAfGmUmUmCfUmUfGfGmUmGmCmUfCmUfUmGmGmCmUm-3′ siAN2-M1 sense strand: (SEQ ID NO: 14) 5′-AmGmCmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 15) 5′-UmAfGmUmUmCfUmUfGfGmUmGmCmUfCmUfUmGmGmCmUmUmGm- 3′ siAN1-M2 sense strand: (SEQ ID NO: 12) 5′-CmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 16) 5′-UmAfGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmUm-3′ siAN2-M2 sense strand: (SEQ ID NO: 14) 5′-AmGmCmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 17) 5′-UmAfGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmUmUmGm- 3′ siAN1-M3 sense strand: (SEQ ID NO: 18) 5′-CmCmAmAmGmAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 16) 5′-UmAfGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmUm-3′ siAN2-M3 sense strand: (SEQ ID NO: 19) 5′-AmGmCmCmAmAmGmAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 17) 5′-UmAfGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmUmUmGm- 3′, wherein C, G, U, and A represent the base composition of the nucleotides; m represents that the nucleotide adjacent to the left side of the letter m is a methoxy modified nucleotide; and f represents that the nucleotide adjacent to the left side of the letter f is a fluoro modified nucleotide.
12 . The siRNA conjugate according to claim 1 , wherein in the siRNA, at least one phosphate group is a phosphorothioate group, and the phosphorothioate linkage is present at at least one of the following positions: the position between the first and second nucleotides at 5′ terminal of the sense strand; the position between the second and third nucleotides at 5′ terminal of the sense strand; the position between the first and second nucleotides at 3′ terminal of the sense strand; the position between the second and third nucleotides at 3′ terminal of the sense strand; the position between the first and second nucleotides at 5′ terminal of the antisense strand; the position between the second and third nucleotides at 5′ terminal of the antisense strand; the position between the first and second nucleotides at 3′ terminal of the antisense strand; and the position between the second and third nucleotides at 3′ terminal of the antisense strand.
siAN1-MiS sense strand: (SEQ ID NO: 20) 5′-CmsCmsAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 21) 5′-UmsAfsGmUmUmCfUmUfGfGmUmGmCmUfCmUfUmGmGmsCmsUm- 3′ siAN2-M1S sense strand: (SEQ ID NO: 22) 5′-AmsGmsCmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 23) 5′-UmsAfsGmUmUmCfUmUfGfGmUmGmCmUfCmUfUmGmGmCmUmsU msGm-3′ siAN1-M25 sense strand: (SEQ ID NO: 20) 5′-CmsCmsAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 24) 5′-UmsAfsGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmsCmsUm- 3′ siAN2-M2S sense strand: (SEQ ID NO: 22) 5′-AmsGmsCmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 25) 5′-UmsAfsGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmUmsU msGm-3′ siAN1-M3S sense strand: (SEQ ID NO: 26) 5′-CmsCmsAmAmGmAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 24) 5′-UmsAfsGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmsCmsUm- 3′ siAN2-M3S sense strand: (SEQ ID NO: 27) 5′-AmsGmsCmCmAmAmGmAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 25) 5′-UmsAfsGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmUmsU msGm-3′, wherein C, G, U, and A represent the base composition of the nucleotides; m represents that the nucleotide adjacent to the left side of the letter m is a methoxy modified nucleotide; f represents that the nucleotide adjacent to the left side of the letter f is a fluoro modified nucleotide; and s represents that a phosphorothioate linkage is present between the two nucleotides adjacent to both sides of the letter s.
wherein R is selected from H, OH, methoxy, or F; “Base” represents a base selected from A, U, C, G, or T.
siAN1-M1P1 sense strand: (SEQ ID NO: 12) 5′-CmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 28) 5′-P1-UmAfGmUmUmCfUmUfGfGmUmGmCmUfCmUfUmGmGmCmUm- 3′ siAN2-M1P1 sense strand: (SEQ ID NO: 14) 5′-AmGmCmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 29) 5′-P1-UmAfGmUmUmCfUmUfGfGmUmGmCmUfCmUfUmGmGmCmUmU mGm-3′ siAN1-M2P1 sense strand: (SEQ ID NO: 12) 5′-CmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 30) 5′-P1-UmAfGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmUm- 3′ siAN2-M2P1 sense strand: (SEQ ID NO: 14) 5′-AmGmCmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 31) 5′-P1-UmAfGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmUmU mGm-3′ siAN1-M3P1 sense strand: (SEQ ID NO: 18) 5′-CmCmAmAmGmAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 30) 5′-P1-UmAfGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmUm- 3′ siAN2-M3P1 sense strand: (SEQ ID NO: 19) 5′-AmGmCmCmAmAmGmAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 31) 5′-P1-UmAfGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmU mUmGm-3′ siAN1-M1SP1 sense strand: (SEQ ID NO: 20) 5′-CmsCmsAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 32) 5′-P1-UmsAfsGmUmUmCfUmUfGfGmUmGmCmUfCmUfUmGmGmsC msUm-3′ siAN2-M1SP1 sense strand: (SEQ ID NO: 22) 5′-AmsGmsCmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 33) 5′-P1-UmsAfsGmUmUmCfUmUfGfGmUmGmCmUfCmUfUmGmGmCmU msUmsGm-3′ siAN1-M2SP1 sense strand: (SEQ ID NO: 20) 5′-CmsCmsAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 34) 5′-P1-UmsAfsGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmsC msUm-3′ siAN2-M2SP1 sense strand: (SEQ ID NO: 22) 5′-AmsGmsCmCmAmAmGfAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 35) 5′-P1-UmsAfsGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmU msUmsGm-3′ siAN1-M3SP1 sense strand: (SEQ ID NO: 26) 5′-CmsCmsAmAmGmAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 34) 5′-P1-UmsAfsGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmsCms Um-3′ siAN2-M3SP1 sense strand: (SEQ ID NO: 27) 5′-AmsGmsCmCmAmAmGmAmGfCfAfCmCmAmAmGmAmAmCmUmAm-3′ antisense strand: (SEQ ID NO: 35) 5′-P1-UmsAfsGmUmUmCfUmUmGmGmUmGmCmUfCmUfUmGmGmCmU msUmsGm-3′ wherein C, G, U, and A represent the base composition of the nucleotides; m represents that the nucleotide adjacent to the left side of the letter m is a methoxy modified nucleotide; f represents that the nucleotide adjacent to the left side of the letter f is a fluoro modified nucleotide; s represents that a phosphorothioate linkage is present between the two nucleotides adjacent to both sides of the letter s; and P1 represents that the nucleotide adjacent to the right side of P1 is a 5′-phosphate nucleotide or a 5′-phosphate analogue modified nucleotide.
wherein E 1 is OH, SH or BH 2 , and Nu is siRNA; R 2 is a linear alkylene of 1 to 20 carbon atoms in length, wherein one or more carbon atoms are optionally replaced with one or more groups selected from the group consisting of: C(O), NH, O, S, CH═N, S(O) 2 , C 2 -C 10 alkylene, C 2 -C 10 alkynylene, C 6 -C 10 arylene, C 3 -C 18 heterocyclylene, and C 5 -C 10 heteroarylene, and wherein R 2 is optionally substituted by any one or more groups selected from the group consisting of: C 1 -C 10 alkyl, C 6 -C 10 aryl, C 5 -C 10 heteroaryl, C 1 -C 10 haloalkyl, —OC 1 -C 10 alkyl, —OC 1 -C 10 alkylphenyl, —C 1 -C 10 alkyl-OH, —OC 1 -C 10 haloalkyl, —SC 1 -C 10 alkyl, —SC 1 -C 10 alkylphenyl, —C 1 -C 10 alkyl-SH, —SC 1 -C 10 haloalkyl, halo, —OH, —SH, —NH 2 , —C 1 -C 10 alkyl-NH 2 , —N(C 1 -C 10 alkyl)(C 1 -C 10 alkyl), —NH(C 1 -C 10 alkyl), cyano, nitro, —CO 2 H, —C(O)O(C 1 -C 10 alkyl), —CON(C 1 -C 10 alkyl)(C 1 -C 10 alkyl), —CONH(C 1 -C 10 alkyl), —CONH 2 , —NHC(O)(C 1 -C 10 alkyl), —NHC(O)(phenyl), —N(C 1 -C 10 alkyl)C(O)(C 1 -C 10 alkyl), —N(C 1 -C 10 alkyl)C(O)(phenyl), —C(O)C 1 -C 10 alkyl, —C(O)C 1 -C 10 alkylphenyl, —C(O)C 1 -C 10 haloalkyl, —OC(O)C 1 -C 10 alkyl, —SO 2 (C 1 -C 10 alkyl), —SO 2 (phenyl), —SO 2 (C 1 -C 10 haloalkyl), —SO 2 NH 2 , —SO 2 NH(C 1 -C 10 alkyl), —SO 2 NH(phenyl), —NHSO 2 (C 1 -C 10 alkyl), —NHSO 2 (phenyl), and —NHSO 2 (C 1 -C 10 haloalkyl); each L 1 is a linear alkylene of 1 to 70 carbon atoms in length, wherein one or more carbon atoms are optionally replaced with one or more groups selected from the group consisting of: C(O), NH, O, S, CH═N, S(O) 2 , C 2 -C 10 alkylene, C 2 -C 10 alkynylene, C 6 -C 10 arylene, C 3 -C 18 heterocyclylene, and C 5 -C 10 heteroarylene; and wherein L 1 is optionally substituted by any one or more groups selected from the group consisting of: C 1 -C 10 alkyl, C 6 -C 10 aryl, C 5 -C 10 heteroaryl, C 1 -C 10 haloalkyl, —OC 1 -C 10 alkyl, —OC 1 -C 10 alkylphenyl, —C 1 -C 10 alkyl-OH, —OC 1 -C 10 haloalkyl, —SC 1 -C 10 alkyl, —SC 1 -C 10 alkylphenyl, —C 1 -C 10 alkyl-SH, —SC 1 -C 10 haloalkyl, halo, —OH, —SH, —NH 2 , —C 1 -C 10 alkyl-NH 2 , —N(C 1 -C 10 alkyl)(C 1 -C 10 alkyl), —NH(C 1 -C 10 alkyl), cyano, nitro, —CO 2 H, —C(O)O(C 1 -C 10 alkyl), —CON(C 1 -C 10 alkyl)(C 1 -C 10 alkyl), —CONH(C 1 -C 10 alkyl), —CONH 2 , —NHC(O)(C 1 -C 10 alkyl), —NHC(O)(phenyl), —N(C 1 -C 10 alkyl)C(O)(C 1 -C 10 alkyl), —N(C 1 -C 10 alkyl)C(O)(phenyl), —C(O)C 1 -C 10 alkyl, —C(O)C 1 -C 10 alkylphenyl, —C(O)C 1 -C 10 haloalkyl, —OC(O)C 1 -C 10 alkyl, —SO 2 (C 1 -C 10 alkyl), —SO 2 (phenyl), —SO 2 (C 1 -C 10 haloalkyl), —SO 2 NH 2 , —SO 2 NH(C 1 -C 10 alkyl), —SO 2 NH(phenyl), —NHSO 2 (C 1 -C 10 alkyl), —NHSO 2 (phenyl), and —NHSO 2 (C 1 -C 10 haloalkyl); represents a site where a group is attached to the rest of the molecule; and M1 represents a targeting group.
Rb is a C 1 -C 10 alkyl.
18 . The siRNA conjugate according to claim 17 , wherein L 1 is selected from connection combinations of one or more of A1, A4, A5, A6, A8, A10, A11, A13; or L 1 is selected from connection combinations of at least two of A1, A4, A8, A10, and A11.
19 . The siRNA conjugate according to claim 16 , wherein L 1 is 3 to 25 atoms in length; or L 1 is further 4 to 15 atoms in length.
20 . The siRNA conjugate according to claim 16 , wherein m1, m2 and m3 are each independently an integer of 2-5; or wherein m1=m2=m3.
21 . The siRNA conjugate according to claim 16 , wherein each of the targeting groups is independently a ligand having affinity to asialoglycoprotein receptors on the surface of mammalian hepatocytes; or each of the targeting group is independently selected from the group consisting of D-mannopyranose, L-mannopyranose, D-arabinose, D-xylofuranose, L-xylofuranose, D-glucose, L-glucose, D-galactose, L-galactose, α-D-mannofuranose, β-D-mannofuranose, α-D-mannopyranose, β-D-mannopyranose, α-D-glucopyranose, β-D-glucopyranose, α-D-glucofuranose, β-D-glucofuranose, α-D-fructofuranose, α-D-fructopyranose, α-D-galactopyranose, β-D-galactopyranose, α-D-galactofuranose, β-D-galactofuranose, glucosamine, sialic acid, galactosamine, N-acetylgalactosamine, N-trifluoroacetylgalactosamine, N-propionylgalactosamine, N-n-butyrylgalactosamine, N-isobutyrylgalactosamine, 2-amino-3-O— [(R)-1-carboxyethyl]-2-deoxy-β-D-glucopyranose, 2-deoxy-2-methylamino-L-glucopyranose, 4,6-dideoxy-4-formamido-2,3-di-O-methyl-D-mannopyranose, 2-deoxy-2-sulfoamino-D-glucopyranose, N-glycolyl-α-neuraminic acid, 5-thio-β-D-glucopyranose, methyl 2,3,4-tris-O-acetyl-1-thio-6-O-trityl-α-D-glucopyranoside, 4-thio-β-D-galactopyranose, ethyl 3,4,6,7-tetra-O-acetyl-2-deoxy-1,5-dithio-α-D-glucoheptopyranoside, 2,5-anhydro-D-allononitrile, ribose, D-ribose, D-4-thioribose, L-ribose, and L-4-thioribose.
wherein represents the site where a group is covalently linked, and q2 is an integer of 1-10.
24 . The siRNA conjugate according to claim 16 , wherein the P atom in the Formula A59 is linked to 3′ terminal of the sense strand of the siRNA.
25 . A method for treating dyslipidemia, wherein the method comprises administering an effective amount of the siRNA conjugate according to claim 1 to a subject suffering from dyslipidemia.
26 . A method for inhibiting the expression of ANGPTL3 gene in hepatocytes, comprising contacting an effective amount of the siRNA conjugate according to claim 1 with the hepatocytes.
27 . The method of claim 25 , wherein the dyslipidemia is hypercholesteremia, hypertriglyceridemia or atherosclerosis.
28 . A kit comprising the siRNA conjugate according to claim 1 .