Abstract: The present disclosure, among other things, provides technologies for oligonucleotide synthesis. In some embodiments, the present disclosure provides phosphoramidites and methods for synthesis thereof. In some embodiments, provided methods provides higher yields and/or purities. In some embodiments, provided methods remove byproducts without contact with an aqueous solution.

Abstract: Among other things, the present disclosure provides oligonucleotides, compositions, and methods thereof. Among other things, the present disclosure encompasses the recognition that structural elements of oligonucleotides, such as base sequence, chemical modifications (e.g., modifications of sugar, base, and/or internucleotidic linkages) or patterns thereof, conjugation with additional chemical moieties, and/or stereochemistry [e.g., stereochemistry of backbone chiral centers (chiral internucleotidic linkages)], and/or patterns thereof, can have significant impact on oligonucleotide properties and activities, e.g., knockdown ability, stability, delivery, etc. In some embodiments, the oligonucleotides decrease the expression, activity and/or level of a C9orf72 gene, including but not limited to, one comprising a repeat expansion, or a gene product thereof.

Abstract: The present disclosure, among other things, provides technologies for synthesis, including reagents and methods for stereoselective synthesis. In some embodiments, the present disclosure provides compounds useful as chiral auxiliaries. In some embodiments, the present disclosure provides reagents and methods for oligonucleotide synthesis. In some embodiments, the present disclosure provides reagents and methods for chirally controlled preparation of oligonucleotides. In some embodiments, technologies of the present disclosure are particularly useful for constructing challenging internucleotidic linkages, providing high yields and stereoselectivity.

Abstract: The present disclosure relates to immunoassay methods and immunoassay kits for determining measuring the amount of wild type huntingtin protein in a sample, e.g., a cerebral spinal fluid sample from a Huntington's disease patient, as well as methods of treating Huntington's disease patients employing such immunoassays.

Abstract: The present disclosure provides double stranded oligonucleotides, compositions, and methods relating thereto. The present disclosure encompasses the recognition that structural elements of double stranded oligonucleotides, such as base sequence, chemical modifications (e.g, modifications of sugar, base, and/or internucleotidic linkages) or patterns thereof, and/or stereochemistry (e.g., stereochemistry of backbone chiral centers (chiral internucleotidic linkages)), and/or patterns thereof, can have significant impact on oligonucleotide properties and activities, e.g, RNA interference (RNAi) activity, stability, delivery, etc. The present disclosure also provides methods for treatment of diseases using provided double stranded oligonucleotide compositions, for example, in RNA interference.

Abstract: The present invention relates to chirally controlled oligonucleotides, chirally controlled oligonucleotide compositions, and the method of making and using the same. The invention specifically encompasses the identification of the source of certain problems with prior methodologies for preparing chiral oligonucleotides, including problems that prohibit preparation of fully chirally controlled compositions, particularly compositions comprising a plurality of oligonucleotide types. In some embodiments, the present invention provides chirally controlled oligonucleotide compositions. In some embodiments, the present invention provides methods of making chirally controlled oligonucleotides and chirally controlled oligonucleotide compositions.

Abstract: Among other things, the present disclosure relates to designed oligonucleotides, compositions, and methods thereof. In some embodiments, provided oligonucleotide compositions provide altered splicing of a transcript. In some embodiments, provided oligonucleotide compositions have low toxicity. In some embodiments, provided oligonucleotide compositions provide improved protein binding profiles. In some embodiments, provided oligonucleotide compositions have improved delivery. In some embodiments, provided oligonucleotide compositions have improved uptake. In some embodiments, the present disclosure provides methods for treatment of diseases using provided oligonucleotide compositions.

Abstract: Among other things, the present disclosure provides technologies for oligonucleotide preparation, particularly chirally controlled oligonucleotide preparation, which technologies provide greatly improved crude purity and yield, and significantly reduce manufacturing costs.

Abstract: Among other things, the present disclosure provides designed oligonucleotides, compositions, and methods thereof. In some embodiments, provided oligonucleotide compositions provide improved single-stranded RNA interference and/or RNase H-mediated knockdown. Among other things, the present disclosure encompasses the recognition that structural elements of oligonucleotides, such as base sequence, chemical modifications (e.g., modifications of sugar, base, and/or internucleotidic linkages) or patterns thereof, conjugation with additional chemical moieties, and/or stereochemistry [e.g., stereochemistry of backbone chiral centers (chiral internucleotidic linkages)], and/or patterns thereof, can have significant impact on oligonucleotide properties and activities, e.g., RNA interference (RNAi) activity, stability, delivery, etc.

Abstract: Among other things, the present disclosure provides technologies for altering splicing, particularly for increasing inclusion of exons in splicing products. In some embodiments, the present disclosure provides SMN2 oligonucleotides, compositions, and methods thereof. In some embodiments, the present disclosure provides chirally controlled SMN2 oligonucleotide compositions. In some embodiments, provided oligonucleotides and compositions can increase level of an exon 7-containing SMN2 splicing product and/or a gene product thereof. In some embodiments, the present disclosure provides methods for treatment of splicing-related conditions, disorders and diseases. In some embodiments, the present disclosure provides methods for treating SMN2-related conditions, disorders and diseases such as SMA (spinal muscular atrophy) and ALS (amyotrophic lateral sclerosis).

Abstract: Among other things, the present disclosure provides designed PNPLA3 oligonucleotides, compositions, and methods thereof. In some embodiments, provided oligonucleotide compositions provide improved single-stranded RNA interference and/or RNase H-mediated knockdown. Among other things, the present disclosure encompasses the recognition that structural elements of oligonucleotides, such as base sequence, chemical modifications (e.g., modifications of sugar, base, and/or internucleotidic linkages) or N patterns thereof, conjugation with additional chemical moieties, and/or stereochemistry [e.g., stereochemistry of backbone chiral centers (chiral internucleotidic linkages)], and/or patterns thereof, can have significant impact on oligonucleotide properties and activities, e.g., RNA interference (RNAi) activity, stability, delivery, etc.

Abstract: A double-stranded nucleic acid complex is a double-stranded nucleic acid complex including a first nucleic acid strand and a second nucleic acid strand bonded to each other, the second nucleic acid strand including a complementary region having a base sequence complementary to the first nucleic acid strand; the first nucleic acid strand including natural nucleosides and non-natural nucleosides; some of the nucleosides in at least one nucleic acid strand selected from the group consisting of the first nucleic acid strand and the second nucleic acid strand being bonded together by bonds including asymmetric phosphorus atoms; and absolute configurations of the asymmetric phosphorus atoms being regulated.

Abstract: The present disclosure, among other things, provides technologies for preparing and purifying phosphoramidites for oligonucleotide synthesis.

Abstract: To provide a chiral reagent or a salt thereof. The chiral reagent has following chemical formula (I). In the formula (I), G1 and G2 are independently a hydrogen atom, a nitro group (—NO2), a halogen atom, a cyano group (—CN), a group of formula (II) or (III), or both G1 and G2 taken together to form a group of formula (IV).

Abstract: Among other things, the present disclosure provides designed DMD oligonucleotides, compositions, and methods of use GC thereof. In some embodiments, the present disclosure provides technologies useful for repairing mutant DMD transcripts by skipping exon 51 or exon 53, so that the transcript can be translated into an internally truncated but at least partially functional Dystrophin protein variant. In some embodiments, the present disclosure provides technologies useful for modulating DMD transcript splicing. In some embodiments, provided technologies can alter splicing of a dystrophin (DMD) DMD transcript. In some embodiments, the present disclosure provides methods for treating diseases, such as muscular dystrophy, including but not limited to Duchenne muscular dystrophy, Becker's muscular dystrophy, etc.

Abstract: The present disclosure pertains to the recognition that immune responses mediated by CpG oligonucleotides can be affected by the stereochemistry of modified internucleotidic linkages such as phosphorothioates. In some embodiments, the present disclosure relates to chirally controlled CpG oligonucleotide compositions comprising CpG oligonucleotides comprising multiple modified internucleotidic linkages such as phosphorothioate linkages, wherein the oligonucleotides comprise one or more CpG region motifs having defined stereochemistry patterns of chiral internucleotidic linkages. In some embodiments, CpG oligonucleotides comprising one or more CpG region motifs are capable of agonizing an immune response. In some embodiments, CpG oligonucleotides comprising one or more CpG region motifs are antagonistic. Methods for making and using chirally controlled CpG oligonucleotide compositions are also described.

Abstract: The present invention relates to chirally controlled oligonucleotides of select designs, chirally controlled oligonucleotide compositions, and methods of making and using the same. In some embodiments, a provided chirally controlled oligonucleotide composition provides different cleavage patterns of a nucleic acid polymer than a reference oligonucleotide composition. In some embodiments, a provided chirally controlled oligonucleotide composition provides single site cleavage within a complementary sequence of a nucleic acid polymer.

Abstract: Among other things, the present disclosure relates to chirally controlled oligonucleotides of select designs, chirally controlled oligonucleotide compositions, and methods of making and using the same. In some embodiments, a provided chirally controlled oligonucleotide composition provides different cleavage patterns of a nucleic acid polymer than a reference oligonucleotide composition. In some embodiments, a provided chirally controlled oligonucleotide composition provides single site cleavage within a complementary sequence of a nucleic acid polymer. In some embodiments, a chirally controlled oligonucleotide composition has any sequence of bases, and/or pattern or base modifications, sugar modifications, backbone modifications and/or stereochemistry, or combination of these elements, described herein.

Abstract: To provide a chiral reagent or a salt thereof. The chiral reagent has following chemical formula (I). In the formula (I), G1 and G2 are independently a hydrogen atom, a nitro group (—NO2), a halogen atom, a cyano group (—CN), a group of formula (II) or (III), or both G1 and G2 taken together to form a group of formula (IV).

Abstract: Among other things, the present disclosure provides designed oligonucleotides, compositions, and methods thereof. In some embodiments, provided oligonucleotide compositions provide improved single-stranded RNA interference and/or RNase H-mediated knockdown. Among other things, the present disclosure encompasses the recognition that structural elements of oligonucleotides, such as base sequence, chemical modifications (e.g., modifications of sugar, base, and/or internucleotidic linkages) or patterns thereof, conjugation with additional chemical moieties, and/or stereochemistry [e.g., stereochemistry of backbone chiral centers (chiral internucleotidic linkages)], and/or patterns thereof, can have significant impact on oligonucleotide properties and activities, e.g., RNA interference (RNAi) activity, stability, delivery, etc.