WO2019009299A1 - α-シヌクレイン発現抑制するENAアンチセンスオリゴヌクレオチド - Google Patents
α-シヌクレイン発現抑制するENAアンチセンスオリゴヌクレオチド Download PDFInfo
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- WO2019009299A1 WO2019009299A1 PCT/JP2018/025237 JP2018025237W WO2019009299A1 WO 2019009299 A1 WO2019009299 A1 WO 2019009299A1 JP 2018025237 W JP2018025237 W JP 2018025237W WO 2019009299 A1 WO2019009299 A1 WO 2019009299A1
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- oligonucleotide
- complementary
- synuclein
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Definitions
- the present invention relates to a novel oligonucleotide exhibiting an ⁇ -synuclein expression inhibitory action, an ⁇ -synuclein expression inhibitor comprising the novel oligonucleotide, and more specifically, an ⁇ -synuclein expression inhibitor using a novel artificial nucleic acid.
- Parkinson's disease can be classified as sporadic Parkinson's disease and hereditary Parkinson's disease.
- Sporadic Parkinson's disease is a progressive neurodegenerative disease, with a prevalence of 1 in 1000, and progressive dementia and dementia.
- dementia is Lewy body dementia and the treatment is only symptomatic treatment. This is caused by aggregation and accumulation of ⁇ -synuclein in the brain.
- Hereditary Parkinson's disease is 5 to 10% of Parkinson's disease, and involvement of the PARK4 gene is considered among the etiologic genes PARK1 to PARK20.
- Hereditary Parkinson's disease in which the PARK4 gene is involved exhibits autosomal dominant inheritance, and there are several dozen such patients in Japan.
- hereditary Parkinson's disease in which the PARK4 gene is involved the normal ⁇ -synuclein gene is in excess, resulting in the combination of Parkinson's disease and dementia.
- ⁇ -synuclein is a protein consisting of 140 amino acid residues and is an amyloid protein having no unique native structure. Alpha-synuclein is associated with synaptic vesicle accumulation and release. The ⁇ -synuclein knockout (KO) mouse is pathologically normal and shows no neuroprotection against neurotoxin MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine) obtain.
- MPTP 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine
- ⁇ -synuclein is a main component of Lewy bodies in diseases such as Parkinson's disease and Lewy body dementia (DLB).
- PD autopsy brain analysis For stage classification of Braak, ⁇ -synuclein staining of autopsy brain was performed and disease progress was compared with ⁇ -synuclein lesion, and ⁇ -synuclein aggregation in nerve cells is the main cause of lesion Is known.
- Tg ⁇ -synuclein transgenic mice were administered ⁇ -synuclein fibrils, the lesions extended to the nucleus and abnormal ⁇ -synuclein was also found outside the cells (prion-like cells) Outward propagation).
- the pathological conditions of Parkinson's disease are as follows. Aggregation of aberrant ⁇ -synuclein in neurons denatures the midbrain nigral neurons, reduces the production of dopamine, and causes motor dysfunction or cognitive dysfunction. In conventional symptomatic treatment, neurodegeneration has gradually progressed, and administration of L-dopa preparation for dopamine replacement or administration of a dopamine agonist for promotion of dopamine secretion has been performed for dopamine replacement.
- nucleic acid drugs for ⁇ -synuclein knockdown, targeting the aggregation of aberrant ⁇ -synuclein in neuronal cells.
- Non-patent Document 1 Use of Adeno-Associated Virus (AAV) Ribozymes in Rats for Nucleic Acid Drugs to Suppress Excess ⁇ -Synuclein (Non-patent Document 1), Use of Lentivirus-shRNA in Rats (Non-patent Document 2), AAV- Use of shRNA in rats (Non-patent documents 3 and 4), Use of naked siRNA in mice (Non-patent document 5), Use of exosomal siRNA in mice (Non-patent document 6), siRNA (2-O-Me And its use in monkeys (Non-patent Document 7) has been reported.
- non-patent documents 1 to 4 use viruses, the effects of siRNAs of non-patent documents 5 and 6 disappear early, and the effects of siRNA of non-patent document 7 are insufficient.
- Patent Document 1 a 2'-O-methoxyethyl (MOE) modified nucleoside is used. Also, in Patent Document 1, the oligonucleotide is injected and administered via intrastriatal bolus injection.
- MOE 2'-O-methoxyethyl
- the present invention solves the above-mentioned problems, and an object of the present invention is to provide a nucleic acid drug having higher efficacy and longer duration for suppression of ⁇ -synuclein expression.
- the present invention An oligonucleotide comprising at least one 2′-O, 4′-C-ethylene nucleoside or a pharmacologically acceptable salt thereof,
- the oligonucleotide is capable of binding to the ⁇ -synuclein gene, having an activity of suppressing the expression of the ⁇ -synuclein gene, and complementary to the ⁇ -synuclein gene, and 40-43, 74-76, 215, 227-230, 234, 254, 255, 263, 266-269, 273-275, 277, 278, 284-286, 288, 289, 366-368, of SEQ ID NO: 1
- the above oligonucleotide or a pharmacologically acceptable salt thereof is selected from 40 to 42, 74 to 76, 215, 227 to 230, 234, 254, 255, 263, 266, 267, of SEQ ID NO: 1
- a nucleotide complementary to any one nucleotide selected from the group consisting of positions 269, 273-275, 277, 278, 284-286, 288, 366-368, and 412-415 is a 5 'end, It is complementary to at least a portion of SEQ ID NO: 1 and is 13-16 nucleotides in length.
- the above-mentioned oligonucleotide or a pharmacologically acceptable salt thereof comprises 41, 42, 215, 227-230, 234, 274, 277, 278, 284-286, 288, 366- of SEQ ID NO: 1
- the above oligonucleotide or a pharmacologically acceptable salt thereof is selected from the group consisting of positions 42, 227 to 230, 274, 277, 278, 284 to 286, 413, and 414 of SEQ ID NO: 1
- a nucleotide complementary to any one nucleotide selected is a 5 'end, is complementary to at least a part of SEQ ID NO: 1, and is 13 to 16 nucleotides in length.
- the above oligonucleotide or a pharmacologically acceptable salt thereof is any one selected from the group consisting of position 42, 227, 229, 274, 277, 278, 285, and 413 of SEQ ID NO: 1
- the nucleotide complementary to one nucleotide is at the 5 'end, is complementary to at least a part of SEQ ID NO: 1, and is 13 to 16 nucleotides in length.
- the above oligonucleotide or a pharmacologically acceptable salt thereof is complementary to any one nucleotide selected from the group consisting of position 227, 229, 278, 285 and 413 of SEQ ID NO: 1
- Nucleotide sequence is at the 5 'end, is complementary to at least a portion of SEQ ID NO: 1, and is 13-16 nucleotides in length.
- the oligonucleotide or a pharmacologically acceptable salt thereof is a nucleotide complementary to any one nucleotide selected from the group consisting of positions 229, 278, 285 and 413 of SEQ ID NO: 1 Is a 5 'end, is complementary to at least a portion of SEQ ID NO: 1 and is 15 nucleotides long, or a nucleotide complementary to the nucleotide at position 227 of SEQ ID NO: 1 is a 5' end, at least a portion of SEQ ID NO: 1 And are 13 nucleotides in length.
- the oligonucleotide is a gapmer consisting of a gap region of 5 to 7 bases, a 5 'wing of 3 to 5 bases and a 3' wing of 3 to 5 bases, wherein the gap region is said 5 ' Located between the wing and the 3 'wing, and the 5' wing and the 3 'wing comprise at least one 2'-O, 4'-C-ethylene nucleoside.
- 2′-O, 4′-C-ethylene nucleoside may be described as ENA (2′-O, 4′-C-Ethylene-bridged Nucleic Acid).
- the 5 'wing and the 3' wing are a 2'-O-alkylated nucleoside modified nucleoside, the literature (Yahara, A. et al. ChemBioChem (2012), 13, 2513-2516.) Or WO 2014 / 109. AmNA described in 109384 or S-cEt (2 ', 4'-constrained ethyl) may be included.
- 2'-O-alkylated D-ribofuranose eg, 2'-O-methylated, 2'-O-aminoethylated, 2'-O-propylated
- 2'-O-allylation 2'-O-methoxyethylation, 2'-O-butylation, 2'-O-pentylation, 2'-O-propargylation etc.
- nucleosides may be used.
- the present invention also provides an ⁇ -synuclein expression inhibitor comprising the above-mentioned oligonucleotide or a pharmacologically acceptable salt thereof as an active ingredient.
- the present invention provides a pharmaceutical composition
- a pharmaceutical composition comprising the above oligonucleotide or a pharmacologically acceptable salt thereof as an active ingredient.
- the pharmaceutical composition is used for the treatment or prevention of alpha synuclein excess.
- the pharmaceutical composition is used for the treatment or prevention of Parkinson's disease or dementia with Lewy bodies.
- the present invention provides a method for suppressing ⁇ -synuclein expression, comprising the step of administering the above-mentioned oligonucleotide or a pharmacologically acceptable salt thereof to an individual.
- the present invention provides a method for treating or preventing alpha-synuclein excess, comprising administering the above-mentioned oligonucleotide or a pharmacologically acceptable salt thereof to an individual.
- the present invention provides a method for treating or preventing Parkinson's disease or dementia with Lewy bodies, comprising the step of administering the above oligonucleotide or a pharmacologically acceptable salt thereof to an individual.
- an oligonucleotide having the expression suppression effect and persistence of ⁇ -synuclein.
- the ⁇ -synuclein inhibitory effect of the oligonucleotide can be exerted also in intrathecal administration which is a administration route usually used at the time of clinical application.
- FIG. 16 is a graph showing the amount of ⁇ -synuclein mRNA after transfection of antisense oligonucleotide (ASO) to HEK293A cells in Test Example 1.
- FIG. 16 is a graph showing the amount of ⁇ -synuclein mRNA after transfection of antisense oligonucleotide (ASO) to HEK293A cells in Test Example 2.
- FIG. FIG. 16 is a graph showing the amount of ⁇ -synuclein mRNA after transfection of antisense oligonucleotide (ASO) to HEK293A cells in Test Example 3.
- FIG. 16 is a graph showing the amount of ⁇ -synuclein mRNA after transfection of antisense oligonucleotide (ASO) to HEK293A cells in Test Example 4.
- FIG. 16 is a graph showing the amount of ⁇ -synuclein mRNA after transfection of antisense oligonucleotide (ASO) to HEK293A cells in Test Example 5.
- nucleoside refers to a “nucleoside” in which a purine or pyrimidine base is linked to a sugar. Natural type nucleosides are also referred to as “natural nucleosides”. The modified non-naturally occurring nucleoside is also referred to as “modified nucleoside”, and in particular, the sugar moiety-modified nucleotide is referred to as “sugar modified nucleoside”. "Nucleotide” means a compound in which a phosphate group is linked to a sugar of a nucleoside.
- oligonucleotide is a polymer of "nucleotides” in which the same or different “nucleosides” are linked by 2 to 50 phosphodiester bonds or other linkages, both naturally occurring and non-naturally occurring. Including the type thing.
- oligonucleotide preferably, a sugar derivative in which the sugar moiety is modified; a phosphorothioate derivative in which the non-crosslinking oxygen atom of the phosphodiester bond is replaced by a sulfur atom; the phosphodiester bond is esterified Esterified compounds; amides wherein the amino group on the purine base is amidated; and more preferably, sugar derivatives in which the sugar moiety is modified; non-crosslinking oxygen atom of phosphodiester bond is replaced by sulfur atom And phosphorothioate derivatives or derivatives in which "a sugar derivative having a modified sugar moiety" and "a phosphorothioate derivative in which a non-crosslinking oxygen atom of a phosphodiester bond is replaced by a sulfur atom" coexist.
- antisense oligonucleotide refers to an oligonucleotide complementary to the mRNA, pre-mRNA or ncRNA (non-coding RNA) of a target gene.
- No. 1 consists of single-stranded DNA, RNA and / or their analogues. The action of mRNA, pre-mRNA or ncRNA is suppressed by forming a double strand with the mRNA, pre-mRNA or ncRNA targeted by the antisense oligonucleotide.
- Antisense oligonucleotides include those which are perfectly complementary to the target mRNA, pre-mRNA or ncRNA.
- DNA or RNA analogue is meant a molecule having a structure similar to DNA or RNA.
- PNA peptide nucleic acid
- ncRNA non-coding RNA
- RNA is a generic term for RNA that functions without being translated into protein.
- ribosomal RNA, transfer RNA, miRNA and the like can be mentioned.
- a pharmacologically acceptable salt thereof is a salt of the oligonucleotide of the invention, which is a physiologically and pharmaceutically acceptable salt of the oligonucleotide of the invention, ie, said A salt that retains the desired biological activity of the oligonucleotide and does not give the unwanted toxicological effects there.
- Such salts include, for example, alkali metal salts such as sodium salts, potassium salts and lithium salts; alkaline earth metal salts such as calcium salts and magnesium salts; aluminum salts, iron salts, zinc salts, copper salts, Nickel salts, metal salts such as cobalt salts; inorganic salts such as ammonium salts; t-octylamine salts, dibenzylamine salts, morpholine salts, glucosamine salts, phenylglycine alkyl ester salts, ethylenediamine salts, N-methylglucamine salts , Guanidine salt, diethylamine salt, triethylamine salt, dicyclohexylamine salt, N, N'-dibenzylethylenediamine salt, chloroprocaine salt, procaine salt, diethanolamine salt, N-benzyl-phenethylamine salt, piperazine salt, tetramethylammonium salt, tris (Hy
- the oligonucleotides of the present invention include oligonucleotides in which naturally occurring DNA or RNA is chemically modified. Such modifications affect the activity of the oligonucleotide. For example, it increases the affinity for the target gene, increases the resistance to nucleolytic enzymes (nucleases), and affects the pharmacokinetics or tissue distribution of the oligonucleotide. Increasing the affinity of the oligonucleotide for its target may allow the use of shorter oligonucleotides.
- the present invention includes oligonucleotides as described below and their pharmacologically acceptable salts.
- the oligonucleotide of the present invention comprises at least one 2'-O, 4'-C-ethylene nucleoside at any position.
- the 2'-O, 4'-C-ethylene nucleoside has an ethylene bridge between position 2 and 4 of its sugar ring.
- the base portion of the oligonucleotide has the following structural formula:
- thyminyl group siticinyl group, adeninyl group, guaninyl group, 5-methylsitocinyl group, and urasilyl group
- 2-oxo-4-hydroxy-5-methyl-1,2-dihydropyrimidine -1-yl group 2-oxo-4-amino-1,2-dihydropyrimidin-1-yl group, 6-aminopurin-9-yl group, 2-amino-6-hydroxypurin-9-yl group
- the 4-amino-5-methyl-2-oxo-1,2-dihydropyrimidin-1-yl group and the 2-oxo-4-hydroxy-1,2-dihydropyrimidin-1-yl group are preferred, in particular
- the thyminyl group, the sitocynyl group, the adenynyl group, the guaninyl group, the 5-methylsitocinyl group and the urasilyl group are preferred.
- uracil (U) and thymine (T) are compatible. Both uracil (U) and thymine (T) can be used for base pairing with the complementary strand adenine (A).
- Oligonucleotides containing at least one 2′-O, 4′-C-ethylene nucleoside as described above can be obtained, for example, using, eg, 2′-O, 4′-C-ethylene nucleoside phosphoramidite, for example, It can be synthesized using the method as described in US Patent Application Publication No. 2000/47599.
- the oligonucleotides of the invention can be linked to the ⁇ -synuclein gene.
- “binding of the oligonucleotide of the present invention to the ⁇ -synuclein gene” refers to direct binding of the oligonucleotide of the present invention to the ⁇ -synuclein gene, and to the mRNA of the ⁇ -synuclein gene of the oligonucleotide of the present invention. And binding of the oligonucleotide of the present invention to the pre-mRNA of the ⁇ -synuclein gene.
- the term "capable of binding” means that a single-stranded oligonucleotide can form a double-stranded nucleic acid structure by complementarity between a target gene and a nucleobase.
- the indicator of thermal stability of binding is not limited to the melting temperature (T m ) of double stranded nucleic acid.
- Double-stranded nucleic acid melting temperature (T m) may be determined, for example, as follows: buffer (8.1mM Na 2 HPO 4, 2.68mM KCl, 1.47mM KH 2 PO 4, pH7.2 The oligonucleotide and the target RNA are mixed equimolarly, heated at 95 ° C.
- the temperature of double-stranded nucleic acid is heated from 20 ° C. to 95 ° C. at a rate of 0.5 ° C./min, and the change of absorbance (A) at 260 nm with temperature (T) is measured.
- / dT draw a graph of vs T, the value of dA / dT is the largest becomes the temperature, i.e. the temperature change by T of a is maximized, and the T m of a double-stranded nucleic acid.
- the melting temperature (T m ) is, for example, 40 ° C. to 90 ° C., preferably 50 ° C. to 75 ° C.
- the oligonucleotide of the present invention is complementary to the ⁇ -synuclein gene, but does not have to have perfect complementarity and may have a mismatch.
- the oligonucleotide of the present invention and the ⁇ -synuclein gene need not have complete complementarity in the base sequence of the region forming the double strand, but can form a double-stranded nucleic acid, as long as it has an expression suppression effect , May have one or several mismatches.
- One or several mismatches may depend on the length of the oligonucleotide, but mean 1 to 4, preferably 1 to 3, and more preferably 1 or 2 mismatches.
- the oligonucleotide of the present invention is preferably one having complete (100%) complementarity to the base sequence of the region forming a double strand.
- SNCA ⁇ -synuclein
- Examples of the ⁇ -synuclein (SNCA) gene which is a target gene of the oligonucleotide of the present invention include, but are not limited to, human SNCA (“hSNCA”) gene, mouse SNCA (“mSNCA”) gene and the like.
- SNCA ⁇ -synuclein
- SNCA ⁇ -synuclein
- SNCA ⁇ -synuclein
- the DNA sequence (base sequence) of the coding region (GenBank accession number: NM — 000345) of human SNCA (hSNCA) is described in SEQ ID NO: 1 of the sequence listing.
- the "SNCA” in the present invention is not limited to the sequence of SEQ ID NO: 1, and as long as the function of the SNCA protein is maintained, the number of mutations of amino acids or DNA and the mutation site are not limited.
- the oligonucleotide of the present invention has an activity of suppressing the expression of the ⁇ -synuclein gene.
- the SNCA expression suppression activity (knockdown activity) can be measured by a known method. For example, it can be measured by the method of transfection of antisense oligonucleotide (ASO) to HEK293A cells described later or intracerebroventricular administration of ⁇ -synuclein transgenic mouse (SNCA Tg mouse).
- the oligonucleotide of the present invention is, for example, an oligonucleotide of 13 to 16 nucleotides in length, preferably 13 to 15 nucleotides in length, more preferably 14 or 15 nucleotides in length.
- the oligonucleotide of the present invention consists of the base sequences described in Tables 1-1 and 1-2 below, and is a target of the ⁇ -synuclein gene described in Tables 1-1 and 1-2. It can be combined with a region. However, at least one nucleoside in the sequence is 2'-O, 4'-C-ethylene nucleoside. In Tables 1-1 and 1-2, the positions of 2'-O, 4'-C-ethylene nucleosides are not shown, and only the base sequences are shown.
- the target region is a region associated with human SNCA gene, in particular, an activity to suppress the expression of ⁇ -synuclein gene or knockdown activity.
- the “target region” is a region on the SNCA gene to be targeted (eg, a target region consisting of the indicated base sequence (eg, the base sequence of positions 28 to 40 of SEQ ID NO: 1)) It includes the region on the mRNA or pre-mRNA of the SNCA gene corresponding to the region on the gene.
- “binding to a target region” does not necessarily form two or more strands (preferably a double strand) with the entire target region, but a region that is a part of the region and two or more strands ( Preferably, it may form a double strand).
- the oligonucleotide of the present invention is, for example, complementary to at least a part of the target region, and preferably has complete complementarity.
- a part is a region having a length of 13 to 15 nucleotides in the target region.
- a "partial" region such that the 3 'end of the target region is at position 40 of the base sequence of SEQ ID NO: 1 can be selected as the target region.
- “Complementary to at least a portion of the target region” means complementary to the base of at least a portion of the target region (eg, consisting of the nucleotide sequence 28-40 of SEQ ID NO: 1) on the SNCA gene And complementary to the base of the region on the mRNA or pre-mRNA corresponding to the at least one region.
- a preferred base sequence of the oligonucleotide of the present invention consists of a part of the base sequence shown in (an antisense oligonucleotide for a region on mRNA corresponding to the target region described in Tables 1-1 and 1-2).
- a base sequence is mentioned.
- the sequence of the antisense oligonucleotide is determined by the number of bases constituting the antisense oligonucleotide (corresponding to the nucleotide length of the oligonucleotide), in the direction from 3 'to 5' (3 'to 5'), It can be designed to align the bases complementary to the bases of the indicated target region.
- the base sequence of the antisense oligonucleotide When the base sequence of the antisense oligonucleotide is represented in the 5 'to 3' direction (5 'to 3'), it can be a reverse complementary sequence to the base sequence of the target region shown in SEQ ID NO: 1.
- the oligonucleotide of the present invention may have one or several bases deleted, substituted, added or inserted as long as it has SNCA expression suppression activity in these sequences. Preferably, 1 to 3, more preferably 1 to 2 and even more preferably 1 base may be deleted, substituted, added or inserted.
- nucleotide modification known in the art other than the above sugar modification can be used for the oligonucleotide of the present invention.
- modification of nucleotides phosphate modification and nucleobase modification are known.
- nucleic acid modifications can be performed based on methods known in the art.
- phosphate modification examples include phosphodiester bond possessed by natural nucleic acid, S-oligo (phosphorothioate), D-oligo (phosphodiester), M-oligo (methyl phosphonate), boranophosphate and the like . These modifications are incorporated into the oligonucleotide according to known methods.
- S-oligo phosphorothioate
- D-oligo phosphodiester
- M-oligo methyl phosphonate
- boranophosphate and the like examples include phosphodiester bond possessed by natural nucleic acid, S-oligo (phosphorothioate), D-oligo (phosphodiester), M-oligo (methyl phosphonate), boranophosphate and the like . These modifications are incorporated into the oligonucleotide according to known methods.
- S-oligo phosphorothioate
- Phosphorothioate modifications may convert one or more or all of the phosphodiester bonds in the oligonucleotide.
- nucleobase modifications include 5-methylcytosine, 5-hydroxymethylcytosine, 5-propynylcytosine and the like.
- the oligonucleotide of the present invention is preferably a gapmer.
- a gapmer is an oligonucleotide comprising a "gap" as a central region and regions on both sides of the gap, two wings, ie, a "5 'wing” at the 5' side and a "3 'wing” at the 3' side. means.
- the gap region of the gapmer in the present invention may be 5 to 7 nucleotides in length, preferably 6 to 7 nucleotides in length, more preferably 7 nucleotides in length.
- the gap is composed of natural nucleosides consisting of DNA.
- the wing region of the gapmer in the present invention may be 3 to 5 nucleotides in length, preferably 3 to 4 nucleotides in length, more preferably 3 nucleotides in length.
- the oligonucleotide of the present invention contains at least one 2'-O, 4'-C-ethylene nucleoside in the "5 'wing” and / or the "3' wing".
- at least one 2'-O, 4'-C-ethylene nucleoside is preferably contained in the "5 'wing", preferably 1 to 4, more preferably 2 to 4, still more preferably 2 to 3, particularly preferably 2 included.
- at least one 2′-O, 4′-C-ethylene nucleoside is contained in the “3 ′ wing”, preferably 1 to 4, more preferably 2 to 4, still more preferably 2 to 3, particularly preferably 2 included.
- the 5 'wing and the 3' wing may comprise at least one 2'-O, 4'-C-ethylene nucleoside.
- phosphate modification, base modification and the like may be included.
- the type, number and location of modifications in one wing may be the same or different from the type, number and location of modifications in the other wing.
- the gap region of 5 to 7 nucleotides, the 5 'wing of 3 nucleotides and the 3' wing of 3 nucleotides, wherein the 5 'wing and the 3' wing are each at least one 2'-O, 4 It may contain a '-C-ethylene nucleoside.
- a gap region of 6 to 7 nucleotides, a 5 'wing of 3 nucleotides and a 3' wing of 3 nucleotides, 2 out of 3 of the 5 'wings being 2'-O, 4'-C-ethylene Nucleosides, two out of three of the 3 'wings may contain 2'-O, 4'-C-ethylene nucleosides.
- a gapmer for example, 3-7-3, 4-6-3, 3-6-4, 4-5-4, 4-7-3, 3-7-4, 4-6- 4, 5-6-3, 3-6-5, 3-7-5, 5-7-3, 4-7-4, 4-6-5, 5-6-4, 5-5-5, 5-6-5.
- A indicates the number of bases in the 5 'wing
- B indicates the number of bases in the gap
- C Indicates the number of sugar-modified nucleosides among the bases forming the 3 ′ wing
- “ D ” indicates the number of natural nucleosides among the bases forming the 3 ′ wing.
- the 5 'wing and the 3' wing may each comprise at least one 2'-O, 4'-C-ethylene nucleoside.
- the 5 'wing and the 3' wing may be a 2'-O-alkylated nucleoside modified nucleoside, literature (Yahara, A. et al., ChemBioChem, (2012), 13, 2513-2516) or international AmNA described in publication No.
- S-cEt (2 ', 4'-constrained ethyl) may be included.
- the number is not particularly limited, and may be appropriately designed according to the purpose.
- the two or more 2′-O-alkylated nucleosides, AmNA, S-cEt, may be the same as or different from one another.
- 2'-O-alkylated D-ribofuranose eg, 2'-O-methylated, 2'-O-aminoethylated, 2'-O-propylated
- 2'-O-allylation 2'-O-methoxyethylation, 2'-O-butylation, 2'-O-pentylation, 2'-O-propargylation etc.
- Examples of the oligonucleotide of the present invention include the oligonucleotides of Examples 23, 28, 29, 32, and 170, and the like.
- one or several bases may be deleted, substituted, added or inserted as long as it has SNCA expression suppression activity.
- Preferably, 1 to 3, more preferably 1 to 2 and even more preferably 1 base may be deleted, substituted, added or inserted.
- the oligonucleotide of the present invention can be synthesized by a conventional method using a sugar-modified nucleoside as described above and a natural nucleoside, for example, a commercially available automatic nucleic acid synthesizer (eg, manufactured by BioAutomation, manufactured by Applied Biosystems, Inc. It can be easily synthesized by Gene Design and the like.
- the synthesis methods include solid phase synthesis methods using phosphoroamidites, solid phase synthesis methods using hydrogen phosphonates, and the like. For example, it is disclosed in Tetrahedron Letters, 1981, vol. 22. pp. 1859-1862, WO 2011/052436 and the like.
- the present invention also encompasses an ⁇ -synuclein expression inhibitor containing the oligonucleotide of the present invention.
- the “alpha-synuclein expression inhibitor” inhibits biosynthesis of alpha-synuclein by binding to the alpha-synuclein gene and suppressing the expression of the alpha-synuclein gene.
- the invention further encompasses pharmaceutical compositions containing the oligonucleotides of the invention. Any administration method and formulation known in the art can be used as the administration method and formulation of the ⁇ -synuclein expression inhibitor or pharmaceutical composition of the present invention.
- the pharmaceutical composition of the present invention can be administered by a variety of methods depending on the local or systemic treatment or the area to be treated.
- the method of administration may be, for example, topically (including eye drops, intravaginal, intrarectal, intranasal and transdermal), orally or parenterally.
- Parenteral administration includes intravenous injection or infusion, subcutaneous, intraperitoneal or intramuscular injection, pulmonary administration by aspiration or inhalation, intrathecal administration, intracerebroventricular administration and the like.
- compositions of the present invention When the pharmaceutical composition of the present invention is topically administered, preparations such as transdermal patches, ointments, lotions, creams, gels, drops, suppositories, sprays, liquids, powders and the like can be used.
- compositions for oral administration include powders, granules, suspensions or solutions dissolved in water or non-aqueous media, capsules, powders, tablets and the like.
- compositions for parenteral, intrathecal or intracerebroventricular administration include sterile aqueous solutions and the like containing buffers, diluents and other suitable additives.
- the pharmaceutical composition of the present invention comprises various pharmaceutical additives such as excipients, binders, wetting agents, disintegrants, lubricants, diluents and the like suitable for its dosage form in an effective amount of the oligonucleotide of the present invention. It can be obtained by mixing as needed. In the case of an injection, it may be sterilized with a suitable carrier to give a preparation.
- pharmaceutical additives such as excipients, binders, wetting agents, disintegrants, lubricants, diluents and the like suitable for its dosage form in an effective amount of the oligonucleotide of the present invention. It can be obtained by mixing as needed. In the case of an injection, it may be sterilized with a suitable carrier to give a preparation.
- Excipients include lactose, sucrose, glucose, starch, calcium carbonate or crystalline cellulose and the like.
- the binder includes methyl cellulose, carboxymethyl cellulose, hydroxypropyl cellulose, gelatin, polyvinyl pyrrolidone and the like.
- Disintegrants include carboxymethylcellulose, carboxymethylcellulose sodium, starch, sodium alginate, agar powder, sodium lauryl sulfate and the like.
- the lubricant may, for example, be talc, magnesium stearate or macrogol. Cocoa butter, macrogol or methylcellulose can be used as a base for suppositories.
- a solubilizing agent when prepared as a solution or emulsion, suspension injection, a solubilizing agent, a suspending agent, an emulsifying agent, a stabilizer, a preservative, an isotonic agent, etc. which are usually used are appropriately added. You may In the case of oral administration, a flavoring agent, a fragrance and the like may be added.
- the pharmaceutical composition of the present invention can be used for the treatment or prevention of diseases associated with the ⁇ -synuclein (SNCA) gene.
- the pharmaceutical composition of the present invention can be used, for example, for treatment or prevention based on SNCA expression suppression activity (knockdown activity).
- Diseases in which the pharmaceutical composition of the present invention can be used include, for example, excess ⁇ -synuclein.
- prevention of progression of neurodegeneration and prevention of development of dementia in particular, DLB and the like
- the pharmaceutical composition of the present invention can be used, for example, for the treatment or prevention of Parkinson's disease or dementia with Lewy bodies.
- the present invention provides a method for suppressing ⁇ -synuclein expression.
- the invention further provides methods of treating or preventing alpha synuclein excess; and methods of treating or preventing Parkinson's disease or Lewy body dementia. These methods comprise the steps of administering to an oligonucleotide individual of the invention.
- the "individual” is preferably a mammal, more preferably a human, a monkey, a dog, a cat, a rat and a mouse, and further preferably a human.
- any administration method and dosage form can be used as long as an effective amount of the oligonucleotide of the present invention is administered.
- the dose effective amount depends on the individual to be administered, but can be arbitrarily determined according to the sex, age, weight, symptoms etc of the individual, and the method, route, frequency etc of the administration. For example, a dose of 0.1 to 10 mg / kg can be mentioned.
- the administration method and the like are as described above.
- Example 1 HO-C e2s -C m1s -T e2s -5meC s -5meC s -T s -T s -G s -G s -5meC s -C e2s -T m1s -T e2t -H (40-13A Synthesis of (SEQ ID NO: 2) The title oligonucleotide was synthesized using a phosphoramidite method (Nucleic Acids Research, 12, 4539 (1984)) using an automatic nucleic acid synthesizer ("MerMade 192X" manufactured by BioAutomation).
- activator solution-3 (0.25 mol / L 5-benzylthio-1H-tetrazole / acetonitrile solution, manufactured by Wako Pure Chemical Industries, product No. 013-20011)
- 1-methylimidazole (sum The reaction time was about 10 minutes using a solution to which 0.4% of product No. 134-12801) manufactured by Kotoshinyaku Co., Ltd. was added.
- a thioating reagent for forming a phosphorothioate bond phenylacetyl disulfide (manufactured by CARBOSYNTH, product No.
- FP07495) is adjusted to 0.2 M, dehydrated acetonitrile (manufactured by Kanto Kagaku, product No. 01387-05): dehydrated pyridine It melt
- dissolved and used using the (Kanto Kagaku make, product No. 11339-05) 1: 1 (v / v) liquid mixture.
- CAP A for AKTA (1-methylimidazole solution in acetonitrile, manufactured by Sigma-Aldrich, product No. L040050
- Cap B1 for AKTA acetic anhydride in acetonitrile solution, manufactured by Sigma-Aldrich, product No.
- Cap B2 for AKTA pyridine-acetonitrile solution, manufactured by Sigma-Aldrich, product No. L050150
- DCA Deblock diichloroacetic acid-toluene solution, manufactured by Sigma-Aldrich, product No. L023050
- an amidite reagent a phosphoroamidite of 2′-O-Me nucleoside (adenosine product product No. ANP-575, cytidine product product No. ANP-5752, guanosine product product No. ANP-5753, uridine product No. ANP For-5754), one from ChemGenes was used.
- Example 14 The non-natural type phosphoroamidite is disclosed in Example 14 (5'-O-dimethoxytrityl-2'-O, 4'-C-ethylene-6-N-benzoyladenosine-3'-O- of JP-A-2000-297097).
- Example 27 (2-cyanoethyl N, N-diisopropyl) phosphoroamidite),
- Example 27 (5′-O-dimethoxytrityl-2′-O, 4′-C-ethylene-2-N-isobutyryl guanosine-3 ′ -O- (2-cyanoethyl N, N-diisopropyl) phosphoroamidite)
- Example 22 (5'-O-dimethoxytrityl-2'-O, 4'-C-ethylene-4-N-benzoyl-5-one) Methyl cytidine-3′-O- (2-cyanoethyl N, N-diisopropyl) phosphoroamidite)
- Example 9 (5′-O-dimethoxytrityl-2′-O, 4′-C-ethylene-5-methyluridide -3'-O- (2- cyanoethyl N, N-diisopropyl) phosphoramidite) was
- the title compound was synthesized using Glen Unysupport FC 96 well format 0.2 ⁇ mol (manufactured by Glen Research) as a solid phase carrier.
- the oligomer was cleaved from the support by treating the protected oligonucleotide analog having the target sequence with 600 ⁇ L of concentrated aqueous ammonia, and the protecting group cyanoethyl group on the phosphorus atom and the protecting group on the nucleic acid base were removed.
- the mixed solution of oligomers was mixed with 300 ⁇ L of Clarity QSP DNA Loading Buffer (Phenomenex), and charged on a Clarity SPE 96 well plate (Phenomenex).
- DCA dichloroacetic acid
- the compound is reversed phase HPLC (column (Phenomenex, Clarity 2.6 ⁇ m Oligo-MS 100 A (2.1 ⁇ 50 mm)), solution A: 100 mM hexafluoroisopropanol (HFIP), 8 mM aqueous triethylamine solution, solution B: methanol, B %: 10% ⁇ 25% (4 min, linear gradient); 60 ° C .; 0.5 mL / min; 260 nm) and eluted at 2.849 minutes.
- the compound was identified by negative ion ESI mass spectrometry (calculated: 4326.51, found: 4326.51).
- nucleotide sequence of this compound is a sequence complementary to nucleotide number 28-40 of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345). In the sequence listing, the base sequence is shown without distinguishing between natural nucleosides and 2′-O, 4′-C-ethylene nucleosides.
- Examples 2 to 12 The compounds of Examples 2 to 12 shown in Table 2 were synthesized in the same manner as Example 1.
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C- ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- Each nucleoside is linked by phosphorothioate.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Molecular weight shows the measured value by negative ion ESI mass spectrometry.
- Example 13 HO-G e2s -C m1s -T e2s -G m1s -T s -5meC s -A s -5meC s -A s -5meC s -C e2s -C m1s -G e2t -H (227-13B Synthesis of (SEQ ID NO: 4) Synthesis and purification were performed under the same conditions as in Example 1 to obtain a target compound.
- the compound is reversed phase HPLC (column (Phenomenex, Clarity 2.6 ⁇ m Oligo-MS 100 A (2.1 ⁇ 50 mm)), solution A: 100 mM hexafluoroisopropanol (HFIP), 8 mM aqueous triethylamine solution, solution B: methanol, B %: 10% ⁇ 25% (4 min, lineargradient); 60 ° C .; 0.5 mL / min; 260 nm) and eluted at 2.326 minutes.
- the compound was identified by negative ion ESI mass spectrometry (calculated: 4399.55, found: 4399.54).
- nucleotide sequence of this compound is a sequence complementary to nucleotide numbers 215-227 of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Examples 14 to 20 The compounds of Examples 14 to 20 shown in Table 3 were synthesized in the same manner as Example 13.
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- Each nucleoside is linked by phosphorothioate.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Molecular weight shows the measured value by negative ion ESI mass spectrometry.
- Example 21 HO-T e2s -C m1s -C e2s -C m1s -T s -5 meC s -5 meC s -T s -T s -G s -G s -C m1s -C e1s -C e2s -U m1s -T e2t
- Synthesis of —H (42-15A) SEQ ID NO: 34
- the compound is reverse phase HPLC (column (Phenomenex, Clarity 2.6 ⁇ m Oligo-MS 100 A (2.1 ⁇ 50 mm)), solution A: 100 mM hexafluoroisopropanol (HFIP), 8 mM aqueous triethylamine solution, solution B: methanol, B %: 10% ⁇ 25% (4 min, linear gradient); 60 ° C .; 0.5 mL / min; 260 nm) and eluted at 3.01 minutes.
- the compounds were identified by negative ion ESI mass spectrometry (calculated: 4977.56, found: 4977.55).
- nucleotide sequence of this compound is a sequence complementary to nucleotide numbers 28 to 42 in the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Examples 22 to 34 The compounds of Examples 22 to 34 shown in Table 4 were synthesized in the same manner as Example 21.
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- Each nucleoside is linked by phosphorothioate.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Molecular weight shows the measured value by negative ion ESI mass spectrometry.
- Example 35 HO-A e2s -U m1s -G e2s -C m1s -T s -5meC s -5meC s -5meC s -T s -G s -5meC s -U m1s -C e2s -C m1s -C e2t Synthesis of —H (263-15A) (SEQ ID NO: 39) Synthesis and purification were performed under the same conditions as in Example 1 to obtain target compounds shown in Table 5.
- the compound is reversed phase HPLC (column (Phenomenex, Clarity 2.6 ⁇ m Oligo-MS 100 A (2.1 ⁇ 50 mm)), solution A: 100 mM hexafluoroisopropanol (HFIP), 8 mM aqueous triethylamine solution, solution B: methanol, B %: 10% ⁇ 25% (4 min, linear gradient); 60 ° C .; 0.5 mL / min; 260 nm) and eluted at 2.969 minutes.
- the compounds were identified by negative ion ESI mass spectrometry (calculated: 5005.59, found: 5005.58).
- the nucleotide sequence of the compound is a sequence complementary to nucleotide numbers 249 to 263 of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Examples 36 and 37 The compounds of Examples 36 and 37 shown in Table 5 were synthesized in the same manner as Example 35.
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- Each nucleoside is linked by phosphorothioate.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Molecular weight shows the measured value by negative ion ESI mass spectrometry.
- Example 38 HO-T e2s -C m1s -C e2s -C m1s -5 meC s -5 meC s -T s -T s -G s -G s -C m1s -C e1s -C e2s -U m1s -T e2t Synthesis of —H (42-15B) (SEQ ID NO: 34) The synthesis and purification were performed under the same conditions as in Example 1 to obtain the target compound shown in Table 6.
- the compound is reverse phase HPLC (column (Phenomenex, Clarity 2.6 ⁇ m Oligo-MS 100 A (2.1 ⁇ 50 mm)), solution A: 100 mM hexafluoroisopropanol (HFIP), 8 mM aqueous triethylamine solution, solution B: methanol, B %: 10% ⁇ 25% (4 min, linear gradient); 60 ° C .; 0.5 mL / min; 260 nm) and eluted at 2.750 minutes.
- the compound was identified by negative ion ESI mass spectrometry (calculated: 5039.57, found: 5039.59).
- nucleotide sequence of this compound is a sequence complementary to nucleotide numbers 28 to 42 in the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Examples 39 to 88 The compounds of Examples 39 to 88 shown in Table 6 were synthesized in the same manner as Example 38.
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- Each nucleoside is linked by phosphorothioate.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Molecular weight shows the measured value by negative ion ESI mass spectrometry.
- Example 89 HO-C e2s -C m1s -C e2s -U m1s -5meC s -5meC s -T s -T s -G s -G s -C m1s -C e2s -U m1s -T e2t -H ( Synthesis of 41-14A) (SEQ ID NO: 14) The synthesis and purification were performed under the same conditions as in Example 1 to obtain the target compounds shown in Table 7.
- the compound is reverse phase HPLC (column (Phenomenex, Clarity 2.6 ⁇ m Oligo-MS 100 A (2.1 ⁇ 50 mm)), solution A: 100 mM hexafluoroisopropanol (HFIP), 8 mM aqueous triethylamine solution, solution B: methanol, B %: 10% ⁇ 25% (4 min, linear gradient); 60 ° C .; 0.5 mL / min; 260 nm) and eluted at 3.101 minutes.
- the compound was identified by negative ion ESI mass spectrometry (calculated: 4677.54, found: 4677.54).
- nucleotide sequence of this compound is a sequence complementary to nucleotide numbers 28 to 41 of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Examples 90 to 108 The compounds of Examples 90 to 108 shown in Table 7 were synthesized in the same manner as Example 89. The data for Examples 89-108 are set forth in Table 7.
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- Each nucleoside is linked by phosphorothioate.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Molecular weight shows the measured value by negative ion ESI mass spectrometry.
- Example 109 HO-C e2s -U m1s -C e2s -C m1s -C e2s -T s -5meC s -5meC s -T s -T s -G s -G e2s -C m1s -C e2s -U m1s
- Synthesis of —Te 2t -H (43-16A) (SEQ ID NO: 51) Synthesis and purification were performed under the same conditions as in Example 1 to obtain target compounds shown in Table 8.
- the compound is reverse phase HPLC (column (Phenomenex, Clarity 2.6 ⁇ m Oligo-MS 100 A (2.1 ⁇ 50 mm)), solution A: 100 mM hexafluoroisopropanol (HFIP), 8 mM aqueous triethylamine solution, solution B: methanol, B %: 10% ⁇ 25% (4 min, linear gradient); 60 ° C .; 0.5 mL / min; 260 nm) and eluted at 3.132 minutes.
- the compounds were identified by negative ion ESI mass spectrometry (calculated: 5400.62, found: 5400.61).
- nucleotide sequence of this compound is a sequence complementary to nucleotide numbers 28 to 43 in the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Examples 110 to 117 The compounds of Examples 110 to 117 shown in Table 8 were synthesized in the same manner as Example 109.
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- Each nucleoside is linked by phosphorothioate.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Molecular weight shows the measured value by negative ion ESI mass spectrometry.
- Example 118 HO-C m1s -C e2s -T e2s -5meC s -5meC s -T s -T s -G s -G s -5meC s -C e2s -T e2s -U m1t -H (40-13E Synthesis of (SEQ ID NO: 2) Synthesis and purification were performed under the same conditions as in Example 1 to obtain the target compound shown in Table 9.
- the compound is reversed phase HPLC (column (Phenomenex, Clarity 2.6 ⁇ m Oligo-MS 100 A (2.1 ⁇ 50 mm)), solution A: 100 mM hexafluoroisopropanol (HFIP), 8 mM aqueous triethylamine solution, solution B: methanol, B %: 10% ⁇ 25% (4 min, linear gradient); 60 ° C .; 0.5 mL / min; 260 nm) and eluted at 2.509 minutes.
- the compound was identified by negative ion ESI mass spectrometry (calculated: 4326.51, found: 4326.51).
- nucleotide sequence of this compound is a sequence complementary to nucleotide numbers 28 to 43 in the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Examples 119 to 129 The compounds of Examples 119 to 129 shown in Table 9 were synthesized in the same manner as Example 118.
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- Each nucleoside is linked by phosphorothioate.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Molecular weight shows the measured value by negative ion ESI mass spectrometry.
- Example 130 HO-C e3s -C m1s -Te s -C s -C s -T s -T s -G s -G s -C s -C s -C e3 s -U m1s -T e2t -H (40-13F Synthesis of (SEQ ID NO: 2) The synthesis was carried out using the phosphoramidite method (Nucleic Acids Research, 12, 4539 (1984)) using an automatic nucleic acid synthesizer. However, the phosphoramidite of AmNA was synthesized with reference to the method described in WO 2011/052436.
- nucleotide sequence of this compound is a sequence complementary to nucleotide number 28-40 of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Examples 131 to 164 The compounds of Examples 131 to 164 shown in Table 10 were synthesized in the same manner as Example 130.
- upper case indicates DNA, lower case 2'-OMe-RNA, underlined upper case 2'-O, 4'-C-ethylene nucleoside and underlined lower case AmNA.
- base position of C of 2'-O, 4'-C-ethylene nucleoside and AmNA is 5-methylcytosine.
- Each nucleoside is linked by phosphorothioate.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Molecular weight shows the measured value by negative ion ESI mass spectrometry.
- Example 165 HO-G e2s -C m1p -Te 2p -G s -T s -5 meC s -A s -5 meC s -A s -5 meC s -C e2 p -C m1 p -G e2 t -H (227-13 A1 Synthesis of (SEQ ID NO: 4) The synthesis and purification were carried out under the same conditions as in Example 1 to obtain the target compounds shown in Table 11. However, Oxidizer 0.05 M for AKTA (Iodine / pyridine / water mixed solution, manufactured by Sigma-Aldrich, product No.
- AKTA Iodine / pyridine / water mixed solution
- L560250-04 was used as a reagent for forming a phosphodiester bond.
- the compound is reversed phase HPLC (column (Phenomenex, Clarity 2.6 ⁇ m Oligo-MS 100 A (2.1 ⁇ 50 mm)), solution A: 100 mM hexafluoroisopropanol (HFIP), 8 mM aqueous triethylamine solution, solution B: methanol, B %: 10% ⁇ 25% (4 min, linear gradient); 60 ° C .; 0.5 mL / min; 260 nm) and eluted at 2.508 minutes.
- the compound was identified by negative ion ESI mass spectrometry (calculated: 4305.63, found: 4305.64).
- nucleotide sequence of this compound is a sequence complementary to nucleotide numbers 215-227 of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Examples 166 to 174 The compounds of Examples 166 to 174 shown in Table 11 were synthesized in the same manner as Example 165.
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Molecular weight shows the measured value by negative ion ESI mass spectrometry.
- Example 175 HO-C e2s -C m1p -T e2p -5meC s -5meC s -T s -T s -G s -G s -5meC s -C e2p -U m1p -T e2t -H (40-13A1 Synthesis of (SEQ ID NO: 2) The synthesis and purification were carried out under the same conditions as in Example 165 to obtain the target compounds shown in Table 12.
- the compound is reversed phase HPLC (column (Phenomenex, Clarity 2.6 ⁇ m Oligo-MS 100 A (2.1 ⁇ 50 mm)), solution A: 100 mM hexafluoroisopropanol (HFIP), 8 mM aqueous triethylamine solution, solution B: methanol, B %: 10% ⁇ 25% (4 min, linear gradient); 60 ° C .; 0.5 mL / min; 260 nm) and eluted at 1.999 minutes.
- the compound was identified by negative ion ESI mass spectrometry (calculated: 4262.60, found: 4262.61).
- nucleotide sequence of this compound is a sequence complementary to nucleotide number 28-40 of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Examples 176 to 197 The compounds of Examples 176 to 197 shown in Table 12 were synthesized in the same manner as Example 175.
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Molecular weight shows the measured value by negative ion ESI mass spectrometry.
- Examples 198-295 By synthesizing under the same conditions as in Example 165, the compounds listed in Tables 13 to 19 below can also be synthesized.
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- upper case indicates DNA
- lower case indicates 2'-OMe-RNA
- underlined upper case indicates 2'-O, 4'-C-ethylene nucleoside.
- the C base site of DNA and 2'-O, 4'-C-ethylene nucleoside is 5-methylcytosine.
- Each nucleoside is linked by phosphorothioate.
- the target region indicates the nucleotide number of the coding region of Homo sapiens synuclein, alpha (SNCA), transcript variant 1, mRNA (NCBI-GenBank accession No. NM — 000345).
- Test Example 1 Additional screening based on transfection of ASO to HEK293A cells (1) On the day before transfection, HEK293A cells (0.5 ml in DMEM medium (manufactured by Thermo Fisher Scientific)) to which 10% FBS (manufactured by HyClone) was added using a 24-well plate (manufactured by Thermo Fisher Scientific) 5 ⁇ 10 4 pieces of “Model No. R705-07” (manufactured by ATCC) were added. One well was prepared for each ASO type, and two wells were prepared for distilled deionized water ("ddW” manufactured by Nacalai Tesque, Inc.) as a control containing no ASO.
- ddW distilled deionized water
- RNAiMAX manufactured by Invitrogen
- RNAiMAX Lipofectamine RNAiMAX
- the cDNA thus obtained was diluted 3-fold with ddW, and the amount of endogenous human ⁇ -synulclein (hSNCA) mRNA was quantified by quantitative PCR. Quantitative PCR was performed using TagMan Gene Expression Assay (manufactured by Applied Biosystems) as follows. The resulting cDNA was diluted 5-fold with ddW (20 ⁇ L of cDNA and 80 ⁇ L of ddW).
- the average of the mean values of 2 wells of each of 2 wells of cDNA transfected with ASO-free ddW was used as a control.
- the above experiment was performed three times to calculate the mean value and standard deviation (SD) between experiments.
- SD standard deviation
- the results are shown in FIG.
- the vertical axis in FIG. 1 indicates the amount of mRNA. Assuming that the amount of mRNA in the control (“No ASO” in FIG. 1) is 1.0, the amount of mRNA after transfection of ASO is relatively represented.
- the sequence names are 40-13A, 215-13A, 227-13A, 229-13A, 234-13A, 266-13A, 267-13A, 273-13A, 274-13A, 275-13A, 277-13A, and 412.
- ASO, which is -13A showed an effect of suppressing excellent ⁇ -synuclein mRNA.
- Test Example 2 Additional screening based on transfection of ASO to HEK293A cells (2) As in Test Example 1, HEK 293A cells were transfected with ASO, the amount of mRNA was quantified, and the average value and SD of 4 experiments were calculated. The results are shown in FIG. The vertical axis in FIG. 2 indicates the amount of mRNA. The amount of mRNA after transfection with ASO was relatively expressed, assuming that the mRNA in the control (“No ASO” in FIG. 2) was 1.0. ASOs with sequence names of 227-13B, 227-13D, 266-13D, 273-13C, 275-13B, 275-13D, and 277-13B showed an effect of suppressing excellent ⁇ -synuclein mRNA.
- Test Example 3 Additional screening based on transfection of ASO to HEK293A cells (3) As in Test Example 1, HEK 293A cells were transfected with ASO, the amount of mRNA was quantified, and the average value and SD of three experiments were calculated. The results are shown in FIG. The vertical axis in FIG. 3 indicates the amount of mRNA. The amount of mRNA after transfection with ASO was relatively expressed, assuming that the mRNA in the control (“No ASO” in FIG. 3) was 1.0. ASO, whose sequence name is 234-13C, showed an effect of suppressing excellent ⁇ -synuclein mRNA.
- Test Example 4 Additional screening based on transfection of ASO to HEK293A cells (4) As in Test Example 1, HEK 293A cells were transfected with ASO, the amount of mRNA was quantified, and the average value and SD of 4 experiments were calculated. The results are shown in FIG. The vertical axis in FIG. 4 indicates the amount of mRNA. The amount of mRNA after transfection with ASO was relatively expressed, assuming that the mRNA in the control (“No ASO” in FIG. 4) was 1.0. The sequence names are 42-15A, 75-15A, 229-15A, 254-15A, 255-15A, 269-15A, 274-15A, 278-15A, 285-15A, 286-15A, 367-15A, 413-15A.
- 414-15A and 415-15A showed the effect of suppressing excellent ⁇ -synuclein mRNA.
- These ASOs showed a high mRNA suppression effect as compared to ISIS 387985 described in JP-A-2014-501507.
- Test Example 5 Additional screening based on transfection of ASO to HEK293A cells (5)
- HEK 293A cells were transfected with ASO, the amount of mRNA was quantified, and the average value and SD of 4 experiments were calculated. The results are shown in FIG.
- the vertical axis in FIG. 5 indicates the amount of mRNA.
- the amount of mRNA after transfection with ASO was relatively expressed, assuming that the mRNA in the control (“No ASO” in FIG. 5) was 1.0.
- ASO whose sequence names are 227-13A1, 227-13A2, 227-13B1, 227-13B2, 227-13B3, 227-13B4, 227-13B5, 227-13D1, 227-13D2 and 227-13D3 were excellent It showed the effect of suppressing ⁇ -synuclein mRNA. These ASOs showed a high mRNA suppression effect as compared to ISIS 387985 described in JP-A-2014-501507.
- an oligonucleotide useful for suppressing the expression of ⁇ -synuclein is provided.
- the oligonucleotide of the present invention is expected to be useful as a nucleic acid medicine useful for, for example, treatment or prevention of ⁇ -synuclein excess and treatment or prevention of Parkinson's disease, dementia with Lewy bodies, and the like.
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Abstract
Description
2’-O,4’-C-エチレンヌクレオシドを少なくとも1つ含むオリゴヌクレオチドまたはその薬理学上許容される塩であって、
該オリゴヌクレオチドが、α-シヌクレイン遺伝子と結合することができ、該α-シヌクレイン遺伝子の発現を抑制する活性を有し、そして該α-シヌクレイン遺伝子と相補的であり、そして、
配列番号1の40~43、74~76、215、227~230、234、254、255、263、266~269、273~275、277、278、284~286、288、289、366~368、及び、412~415位からなる群から選ばれるいずれか1つのヌクレオチドに相補的なヌクレオチドを5’末端とし、配列番号1の少なくとも一部と相補的で、13~16ヌクレオチド長であるオリゴヌクレオチドまたはその薬理学上許容される塩を提供する。
該5’ウイングおよび該3’ウイングには、2’-O-アルキル化ヌクレオシドで修飾されたヌクレオシド、文献(Yahara,A. et al. ChemBioChem (2012), 13, 2513-2516.)又はWO2014/109384記載のAmNA、又は、S-cEt(2’,4’-constrained ethyl)が含まれていてもよい。
2’-O-アルキル化ヌクレオシドとしては、D-リボフラノースの2’-O-アルキル化(例えば、2’-O-メチル化、2’-O-アミノエチル化、2’-O-プロピル化、2’-O-アリル化、2’-O-メトキシエチル化、2’-O-ブチル化、2’-O-ペンチル化、2’-O-プロパルギル化など)ヌクレオシドを用いてもよい。
該5’ウイングおよび該3’ウイングには、2’-O-アルキル化ヌクレオシドで修飾されたヌクレオシド、文献(Yahara, A. et al., ChemBioChem, (2012), 13, 2513-2516)又は国際公開第2014/109384号記載のAmNA、又は、S-cEt(2’,4’-constrained ethyl)が含まれていてもよい。数は、特に限定されず、目的に応じて適宜設計され得る。2つ以上の2’-O-アルキル化ヌクレオシド、AmNA、S-cEtは、互いに、同じものであってもよく、異なるものであってもよい。
2’-O-アルキル化ヌクレオシドとしては、D-リボフラノースの2’-O-アルキル化(例えば、2’-O-メチル化、2’-O-アミノエチル化、2’-O-プロピル化、2’-O-アリル化、2’-O-メトキシエチル化、2’-O-ブチル化、2’-O-ペンチル化、2’-O-プロパルギル化など)を用いてもよい。
核酸自動合成機(「MerMade 192X」BioAutomation製)を用い、ホスホロアミダイト法(Nucleic Acids Research,12,4539(1984))を用いて標記オリゴヌクレオチドを合成した。但し、縮合には、アクチベーター溶液-3(0.25mol/L 5-ベンジルチオ-1H-テトラゾール・アセトニトリル溶液,和光純薬工業社製,product No.013-20011)に、1-メチルイミダゾール(和光純薬工業社製,product No.134-12801)を0.4%加えた溶液を用い、反応時間は約10分間とした。ホスホロチオエート結合を形成するためのチオ化試薬として、0.2Mになるようにフェニルアセチルジスルフィド(CARBOSYNTH製,product No.FP07495)を、脱水アセトニトリル(関東化学製,product No.01837-05):脱水ピリジン(関東化学製,product No.11339-05)=1:1(v/v)混合液を用いて溶解して用いた。その他使用した試薬としては、CAP A for AKTA(1-メチルイミダゾール・アセトニトリル溶液,Sigma-Aldrich製,product No.L040050)、Cap B1 for AKTA(無水酢酸・アセトニトリル溶液,Sigma-Aldrich製,product No.L050050)、Cap B2 for AKTA(ピリジン・アセトニトリル溶液,Sigma-Aldrich製,product No.L050150)、DCA Deblock(ジクロロ酢酸・トルエン溶液,Sigma-Aldrich製,product No.L023050)を用いた。アミダイト試薬としては、2’-O-Meヌクレオシドのホスホロアミダイト(アデノシン体product No.ANP-5751,シチジン体product No.ANP-5752,グアノシン体product No.ANP-5753,ウリジン体product No.ANP-5754)はChemGenes製のものを用いた。非天然型のホスホロアミダイトは特開2000-297097の実施例14(5’-O-ジメトキシトリチル-2’-O,4’-C-エチレン-6-N-ベンゾイルアデノシン-3’-O-(2-シアノエチル N,N-ジイソプロピル)ホスホロアミダイト)、実施例27(5’-O-ジメトキシトリチル-2’-O,4’-C-エチレン-2-N-イソブチリルグアノシン-3’-O-(2-シアノエチル N,N-ジイソプロピル)ホスホロアミダイト)、実施例22(5’-O-ジメトキシトリチル-2’-O,4’-C-エチレン-4-N-ベンゾイル-5-メチルシチジン-3’-O-(2-シアノエチル N,N-ジイソプロピル)ホスホロアミダイト)、実施例9(5’-O-ジメトキシトリチル-2’-O,4’-C-エチレン-5-メチルウリジン-3’-O-(2-シアノエチル N,N-ジイソプロピル)ホスホロアミダイト)、の化合物を用いた。固相担体として、Glen Unysupport FC 96ウェルフォーマット0.2μmol(GlenResearch製)を用い、標記の化合物を合成した。
目的配列を有する保護されたオリゴヌクレオチド類縁体を600μLの濃アンモニア水で処理することによってオリゴマーを支持体から切り出すとともに、リン原子上の保護基シアノエチル基と核酸塩基上の保護基をはずした。オリゴマーの混合溶液を、Clarity QSP DNA Loading Buffer(Phenomenex製)300μLと混合し、Clarity SPE 96 well plate(Phenomenex製)上にチャージした。Clarity QSP DNA Loading Buffer:水=1:1溶液1mL、0.1Mテトラブチルアンモニウムブロミド水溶液:アセトニトリル=8:2(v/v)溶液2mL、3%ジクロロ酢酸(DCA)水溶液3mL、水4mL、20mM Tris水溶液2mLの順に添加した後、20mM Tris水溶液:アセトニトリル=9:1溶液にて抽出される成分を集めた。溶媒留去後、目的化合物を得た。本化合物は、逆相HPLC(カラム(Phenomenex,Clarity 2.6μm Oligo-MS 100A(2.1×50mm))、A溶液:100mMヘキサフルオロイソプロパノール(HFIP)、8mMトリエチルアミン水溶液、B溶液:メタノール、B%:10%→25%(4min,linear gradient);60℃;0.5mL/min;260nm)で分析すると、2.849分に溶出された。化合物は負イオンESI質量分析により同定した(計算値:4326.51、実測値:4326.51)。
本化合物の塩基配列は、Homo sapiens synuclein,alpha(SNCA),transcript variant 1,mRNA(NCBI-GenBank accession No.NM_000345)のコーディング領域のヌクレオチド番号28-40に相補的な配列である。
なお、配列表には、天然ヌクレオシドと2’-O,4’-C-エチレンヌクレオシドとを区別することなく塩基配列を示す。
表2に示す実施例2乃至12の化合物を、実施例1と同様に合成した。
実施例1と同様の条件で合成および精製を行い、目的化合物を得た。本化合物は、逆相HPLC(カラム(Phenomenex,Clarity 2.6μm Oligo-MS 100A(2.1×50mm))、A溶液:100mMヘキサフルオロイソプロパノール(HFIP)、8mMトリエチルアミン水溶液、B溶液:メタノール、B%:10%→25%(4min,lineargradient);60℃;0.5mL/min;260nm)で分析すると、2.326分に溶出された。化合物は負イオンESI質量分析により同定した(計算値:4399.55、実測値:4399.54)。
本化合物の塩基配列は、Homo sapiens synuclein,alpha(SNCA),transcript variant 1,mRNA(NCBI-GenBank accession No.NM_000345)のコーディング領域のヌクレオチド番号215-227に相補的な配列である。
表3に示す実施例14乃至20の化合物を、実施例13と同様に合成した。
実施例1と同様の条件で合成および精製を行い、目的化合物を得た。本化合物は、逆相HPLC(カラム(Phenomenex, Clarity 2.6μm Oligo-MS 100A(2.1×50mm))、A溶液:100mMヘキサフルオロイソプロパノール(HFIP)、8mMトリエチルアミン水溶液、B溶液:メタノール、B%:10%→25%(4min,linear gradient);60℃;0.5mL/min;260nm)で分析すると、3.01分に溶出された。化合物は負イオンESI質量分析により同定した(計算値:4997.56、実測値:4997.55)。
本化合物の塩基配列は、Homo sapiens synuclein,alpha(SNCA),transcript variant 1,mRNA(NCBI-GenBank accession No.NM_000345)のコーディング領域のヌクレオチド番号28-42に相補的な配列である。
表4に示す実施例22乃至34の化合物を、実施例21と同様に合成した。
実施例1と同様の条件で合成および精製を行い、表5に示す目的化合物を得た。本化合物は、逆相HPLC(カラム(Phenomenex,Clarity 2.6μm Oligo-MS 100A(2.1×50mm))、A溶液:100mMヘキサフルオロイソプロパノール(HFIP)、8mMトリエチルアミン水溶液、B溶液:メタノール、B%:10%→25%(4min,linear gradient);60℃;0.5mL/min;260nm)で分析すると、2.969分に溶出された。化合物は負イオンESI質量分析により同定した(計算値:5005.59、実測値:5005.58)。
本化合物の塩基配列は、Homo sapiens synuclein,alpha(SNCA),transcript variant 1,mRNA(NCBI-GenBank accession No.NM_000345)のコーディング領域のヌクレオチド番号249-263に相補的な配列である。
表5に示す実施例36及び37の化合物を、実施例35と同様に合成した。
実施例1と同様の条件で合成および精製を行い、表6に示す目的化合物を得た。本化合物は、逆相HPLC(カラム(Phenomenex, Clarity 2.6μm Oligo-MS 100A(2.1×50mm))、A溶液:100mMヘキサフルオロイソプロパノール(HFIP)、8mMトリエチルアミン水溶液、B溶液:メタノール、B%:10%→25%(4min,linear gradient);60℃;0.5mL/min;260nm)で分析すると、2.750分に溶出された。化合物は負イオンESI質量分析により同定した(計算値:5039.57、実測値:5039.59)。
本化合物の塩基配列は、Homo sapiens synuclein,alpha(SNCA),transcript variant 1,mRNA(NCBI-GenBank accession No.NM_000345)のコーディング領域のヌクレオチド番号28-42に相補的な配列である。
表6に示す実施例39乃至88の化合物を、実施例38と同様に合成した。
実施例1と同様の条件で合成および精製を行い、表7に示す目的化合物を得た。本化合物は、逆相HPLC(カラム(Phenomenex, Clarity 2.6μm Oligo-MS 100A(2.1×50mm))、A溶液:100mMヘキサフルオロイソプロパノール(HFIP)、8mMトリエチルアミン水溶液、B溶液:メタノール、B%:10%→25%(4min,linear gradient);60℃;0.5mL/min;260nm)で分析すると、3.101分に溶出された。化合物は負イオンESI質量分析により同定した(計算値:4677.54、実測値:4677.54)。
本化合物の塩基配列は、Homo sapiens synuclein,alpha(SNCA),transcript variant 1,mRNA(NCBI-GenBank accession No.NM_000345)のコーディング領域のヌクレオチド番号28-41に相補的な配列である。
表7に示す実施例90乃至108の化合物を、実施例89と同様に合成した。実施例89乃至108のデータについて表7に記載する。
実施例1と同様の条件で合成および精製を行い、表8に示す目的化合物を得た。本化合物は、逆相HPLC(カラム(Phenomenex, Clarity 2.6μm Oligo-MS 100A(2.1×50mm))、A溶液:100mMヘキサフルオロイソプロパノール(HFIP)、8mMトリエチルアミン水溶液、B溶液:メタノール、B%:10%→25%(4min,linear gradient);60℃;0.5mL/min;260nm)で分析すると、3.132分に溶出された。化合物は負イオンESI質量分析により同定した(計算値:5400.62、実測値:5400.61)。
本化合物の塩基配列は、Homo sapiens synuclein,alpha(SNCA),transcript variant 1,mRNA(NCBI-GenBank accession No.NM_000345)のコーディング領域のヌクレオチド番号28-43に相補的な配列である。
表8に示す実施例110乃至117の化合物を、実施例109と同様に合成した。
実施例1と同様の条件で合成および精製を行い、表9に示す目的化合物を得た。本化合物は、逆相HPLC(カラム(Phenomenex,Clarity 2.6μm Oligo-MS 100A(2.1×50mm))、A溶液:100mMヘキサフルオロイソプロパノール(HFIP)、8mMトリエチルアミン水溶液、B溶液:メタノール、B%:10%→25%(4min,linear gradient);60℃;0.5mL/min;260nm)で分析すると、2.509分に溶出された。化合物は負イオンESI質量分析により同定した(計算値:4326.51、実測値:4326.51)。
本化合物の塩基配列は、Homo sapiens synuclein,alpha(SNCA),transcript variant 1,mRNA(NCBI-GenBank accession No.NM_000345)のコーディング領域のヌクレオチド番号28-43に相補的な配列である。
表9に示す実施例119乃至129の化合物を、実施例118と同様に合成した。
核酸自動合成機を用い、ホスホロアミダイト法(Nucleic Acids Research, 12, 4539 (1984))を用いて合成を行った。但し、AmNAのホスホロアミダイトは、国際公開第2011/052436号に記載の方法を参照して合成した。
本化合物の塩基配列は、Homo sapiens synuclein,alpha(SNCA),transcript variant 1,mRNA(NCBI-GenBank accession No.NM_000345)のコーディング領域のヌクレオチド番号28-40に相補的な配列である。
表10に示す実施例131乃至164の化合物を、実施例130と同様に合成した。
実施例1と同様の条件で合成および精製を行い、表11に示す目的化合物を得た。但し、ホスホジエステル結合を形成するための試薬として、Oxidizer 0.05M for AKTA(ヨウ素/ピリジン/水混合溶液、Sigma-Aldrich製、product No.L560250-04)を用いた。本化合物は、逆相HPLC(カラム(Phenomenex,Clarity 2.6μm Oligo-MS 100A(2.1×50mm))、A溶液:100mMヘキサフルオロイソプロパノール(HFIP)、8mMトリエチルアミン水溶液、B溶液:メタノール、B%:10%→25%(4min,linear gradient);60℃;0.5mL/min;260nm)で分析すると、2.508分に溶出された。化合物は負イオンESI質量分析により同定した(計算値:4305.63、実測値:4305.64)。
本化合物の塩基配列は、Homo sapiens synuclein,alpha(SNCA),transcript variant 1,mRNA(NCBI-GenBank accession No.NM_000345)のコーディング領域のヌクレオチド番号215-227に相補的な配列である。
表11に示す実施例166乃至174の化合物を、実施例165と同様に合成した。
実施例165と同様の条件で合成および精製を行い、表12に示す目的化合物を得た。本化合物は、逆相HPLC(カラム(Phenomenex,Clarity 2.6μm Oligo-MS 100A(2.1×50mm))、A溶液:100mMヘキサフルオロイソプロパノール(HFIP)、8mMトリエチルアミン水溶液、B溶液:メタノール、B%:10%→25%(4min,linear gradient);60℃;0.5mL/min;260nm)で分析すると、1.999分に溶出された。化合物は負イオンESI質量分析により同定した(計算値:4262.60、実測値:4262.61)。
本化合物の塩基配列は、Homo sapiens synuclein,alpha(SNCA),transcript variant 1,mRNA(NCBI-GenBank accession No.NM_000345)のコーディング領域のヌクレオチド番号28-40に相補的な配列である。
表12に示す実施例176乃至197の化合物を、実施例175と同様に合成した。
実施例165と同様の条件で合成することにより、下記の表13乃至19に記載の化合物も合成することができる。
トランフェクションの前日に、24ウェルプレート(Thermo Fisher Scientific社製)を用いて、10%FBS(HyClone社製)を添加したDMEM培地(Thermo Fisher Scientific社製)0.5mL中に、HEK293A細胞(「型番R705-07」ATCC社製)を5×104個まいた。ASO1種類あたり1ウェル、ASOを含まないコントロールとしてdistilled deionized water(「ddW」ナカライテスク社製)用に2ウェル分作成した。
96ウェルプレート(Applied Biosystems社製)を用いて、35μL Opti-MEM(Thermo Fisher Scientific社製)に2.5μL ASO(濃度は10μM)を加えたものに、さらに37.5μL OptiMEMと0.9μL Lipofectamine RNAiMAX(Invitrogen社製)を加えたものを1ウェル分として作成し、室温で約20分放置し、その後細胞に添加した。ASOを含まないコントロールのウェルは次のように作成した。35μL Opti-MEMに2.5μL ddWを加えたものに、さらに37.5μL OptiMEMに0.9μL Lipofectamine RNAiMAXを加えたものを1ウェル分として2ウェル分作成し、室温で約20分静置した後、細胞に添加した。そしておよそ24時間後に各ウェルをPBS(Thermo Fisher Scientific社製)を用いて2回洗浄した。
RNA抽出及び逆転写反応は、SuperPrep Cell Lysis RT Kit for qPCR(タカラバイオ社製)を用いて、キットのプロトコルに従って実施した。これにより得られたcDNAをddWで3倍希釈し、定量的PCRにより内因性ヒトα-synulclein(hSNCA)のmRNA量を定量した。
定量的PCRはTagMan Gene Expression Assay(Applied Biosystems社製)を用いて、以下のように行った。得られたcDNAをddWで5倍希釈した(cDNA20μLおよびddW80μL)。384 PCRプレート(Applied Biosystems社製)の1ウェルあたり、2×Taqman probe master mix:ddW:5倍希釈済のcDNA:hSNCAプライマー(「Hs01103383」Applied Biosystems社製):β-Actinプライマー(「Hs99999903」Applied Biosystems社製)=5:2:2:0.5:0.5(μL)の割合で混ぜて計10μLを調製し、各cDNAに対して2well分作製した。Viia 7(Applied Biosystems社製)によりリアルタイムPCRを行い、SNCAのmRNA量をduplicateの平均値として定量した。ASOを含まないddWをトランスフェクションした2ウェルのcDNAそれぞれの2well間の平均値を平均したものをコントロールとして用いた。
上述の実験を3回行い、実験間の平均値および標準偏差(SD)を算出した。
結果を図1に示す。図1の縦軸は、mRNA量を示す。コントロール(図1中「No ASO」)におけるmRNA量を1.0として、ASOのトランスフェクション後のmRNA量を相対的に表した。配列名称が40-13A,215-13A,227-13A,229-13A,234-13A,266-13A,267-13A,273-13A,274-13A,275-13A,277-13A、及び、412-13AであるASOが優れたα-シヌクレインmRNAを抑制する効果を示した。
試験例1と同様に、HEK293A細胞に対するASOのトランスフェクションを行い、mRNA量を定量し、4回の実験の平均値とSDを算出した。
結果を図2に示す。図2の縦軸は、mRNA量を示す。コントロール(図2中「No ASO」)におけるmRNAを1.0として、ASOのトランスフェクション後のmRNA量を相対的に表した。配列名称が227-13B,227-13D,266-13D,273-13C,275-13B,275-13D、及び、277-13BであるASOが優れたα-シヌクレインmRNAを抑制する効果を示した。
試験例1と同様に、HEK293A細胞に対するASOのトランスフェクションを行い、mRNA量を定量し、3回の実験の平均値とSDを算出した。
結果を図3に示す。図3の縦軸は、mRNA量を示す。コントロール(図3中「No ASO」)におけるmRNAを1.0として、ASOのトランスフェクション後のmRNA量を相対的に表した。配列名称が234-13CであるASOが優れたα-シヌクレインmRNAを抑制する効果を示した。
試験例1と同様に、HEK293A細胞に対するASOのトランスフェクションを行い、mRNA量を定量し、4回の実験の平均値とSDを算出した。
結果を図4に示す。図4の縦軸は、mRNA量を示す。コントロール(図4中「No ASO」)におけるmRNAを1.0として、ASOのトランスフェクション後のmRNA量を相対的に表した。配列名称が42-15A,75-15A,229-15A,254-15A,255-15A,269-15A,274-15A,278-15A,285-15A,286-15A,367-15A,413-15A,414-15A、及び、415-15AであるASOが優れたα-シヌクレインmRNAを抑制する効果を示した。これらのASOは、特表2014-501507号公報記載のISIS387985と比較して高いmRNA抑制効果を示した。
試験例1と同様に、HEK293A細胞に対するASOのトランスフェクションを行い、mRNA量を定量し、4回の実験の平均値とSDを算出した。
結果を図5に示す。図5の縦軸は、mRNA量を示す。コントロール(図5中「No ASO」)におけるmRNAを1.0として、ASOのトランスフェクション後のmRNA量を相対的に表した。配列名称が227-13A1,227-13A2,227-13B1,227-13B2,227-13B3,227-13B4,227-13B5,227-13D1,227-13D2、及び、227-13D3であるASOが優れたα-シヌクレインmRNAを抑制する効果を示した。これらのASOは、特表2014-501507号公報記載のISIS387985と比較して高いmRNA抑制効果を示した。
Claims (13)
- 2’-O,4’-C-エチレンヌクレオシドを少なくとも1つ含むオリゴヌクレオチドまたはその薬理学上許容される塩であって、
該オリゴヌクレオチドが、α-シヌクレイン遺伝子と結合することができ、該α-シヌクレイン遺伝子の発現を抑制する活性を有し、そして該α-シヌクレイン遺伝子と相補的であり、そして、
配列番号1の40~43、74~76、215、227~230、234、254、255、263、266~269、273~275、277、278、284~286、288、289、366~368、及び、412~415位からなる群から選ばれるいずれか1つのヌクレオチドに相補的なヌクレオチドを5’末端とし、配列番号1の少なくとも一部と相補的で、13~16ヌクレオチド長であるオリゴヌクレオチドまたはその薬理学上許容される塩。 - 配列番号1の40~42、74~76、215、227~230、234、254、255、263、266、267、269、273~275、277、278、284~286、288、289、366~368、及び、412~415位からなる群から選ばれるいずれか1つのヌクレオチドに相補的なヌクレオチドを5’末端とし、配列番号1の少なくとも一部と相補的で、13~16ヌクレオチド長である請求項1に記載のオリゴヌクレオチドまたはその薬理学上許容される塩。
- 配列番号1の41、42、215、227~230、234、274、277、278、284~286、288、366~368、及び、412~414位からなる群から選ばれるいずれか1つのヌクレオチドに相補的なヌクレオチドを5’末端とし、配列番号1の少なくとも一部と相補的で、13~16ヌクレオチド長である請求項1に記載のオリゴヌクレオチドまたはその薬理学上許容される塩。
- 配列番号1の42、227~230、274、277、278、284~286、413、及び、414位からなる群から選ばれるいずれか1つのヌクレオチドに相補的なヌクレオチドを5’末端とし、配列番号1の少なくとも一部と相補的で、13~16ヌクレオチド長である請求項1に記載のオリゴヌクレオチドまたはその薬理学上許容される塩。
- 配列番号1の42、227、229、274、277、278、285、及び、413位からなる群から選ばれるいずれか1つのヌクレオチドに相補的なヌクレオチドを5’末端とし、配列番号1の少なくとも一部と相補的で、13~16ヌクレオチド長である請求項1に記載のオリゴヌクレオチドまたはその薬理学上許容される塩。
- 配列番号1の227、229、278、285、及び、413位からなる群から選ばれるいずれか1つのヌクレオチドに相補的なヌクレオチドを5’末端とし、配列番号1の少なくとも一部と相補的で、13~16ヌクレオチド長である請求項1に記載のオリゴヌクレオチドまたはその薬理学上許容される塩。
- 配列番号1の229、278、285、及び、413位からなる群から選ばれるいずれか1つのヌクレオチドに相補的なヌクレオチドを5’末端とし、配列番号1の少なくとも一部と相補的で、15ヌクレオチド長、又は、配列番号1の227位のヌクレオチドに相補的なヌクレオチドを5’末端とし、配列番号1の少なくとも一部と相補的で、13ヌクレオチド長である請求項1に記載のオリゴヌクレオチドまたはその薬理学上許容される塩。
- 前記オリゴヌクレオチドが、5~7塩基のギャップ領域、3~5塩基の5’ウイングおよび3~5塩基の3’ウイングからなるギャップマーであり、
該ギャップ領域が、該5’ウイングと該3’ウイングの間に位置づけられ、そして
該5’ウイングおよび該3’ウイングが、少なくとも1つの2’-O,4’-C-エチレンヌクレオシドを含む、
請求項1から7のいずれか1つに記載の13~16ヌクレオチド長のオリゴヌクレオチドまたはその薬理学上許容される塩。 - リン酸ジエステル結合の修飾がホスホロチオエート結合である請求項1~8のいずれか1つに記載のオリゴヌクレオチドまたはその薬理学上許容される塩。
- 請求項1から9のいずれか1つに記載のオリゴヌクレオチドまたはその薬理学上許容される塩を有効成分として含有する、α-シヌクレイン発現抑制剤。
- 請求項1から9のいずれか1つに記載のオリゴヌクレオチドまたはその薬理学上許容される塩を有効成分として含有する医薬組成物。
- α-シヌクレイン過剰症の治療または予防に用いられる、請求項11に記載の医薬組成物。
- パーキンソン病またはレビー小体型認知症の治療または予防に用いられる、請求項11に記載の医薬組成物。
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