An oligonucleotide having a nucleotide residue or a nucleoside residue represented by formula (I) {wherein X.sup.1 is an oxygen atom or the like, R.sup.1 is formula (IIA) (wherein R.sup.5A is halogen or the like, and R.sup.6A is a hydrogen atom or the like), formula (IVA) (wherein Y.sup.3A is a nitrogen atom or the like, and Y.sup.4A is CH or the like), or the like, R.sup.2 is a hydrogen atom, hydroxy, halogen, or optionally substituted lower alkoxy, and R.sup.3 is a hydrogen atom or the like, or formula (VI) (wherein n2 is 1, 2 or 3)} at the 5′ end thereof, wherein the nucleotide residue or the nucleoside residue binds to an adjacent nucleotide residue through the oxygen atom at position 3, is provided.

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The present disclosure relates generally to compounds comprising oligonucleotides complementary to a cystic fibrosis transmembrane conductance regulator (CFTR) RNA transcript. Certain such compounds are useful for hybridizing to a CFTR RNA transcript, including but not limited to a CFTR RNA transcript in a cell. In certain embodiments, such hybridization results in modulation of splicing of the CFTR transcript. In certain embodiments, such compounds are used to treat one or more symptoms associated with Cystic Fibrosis.

One aspect of the present invention relates to double-stranded RNA (dsRNA) agent capable of inhibiting the expression of a target gene. The sense strand of the dsRNA agent comprises at least one thermally destabilizing nucleotide, and at least one said thermally destabilizing nucleotide occurring at a site opposite to the seed region (positions 2-8) of the antisense strand; and the antisense strand of the dsRNA agent comprises at least two modified nucleotides that provide the nucleotide a steric bulk that is less than or equal to the steric bulk of a 2′-OMe modification, wherein said modified nucleotides are separated by 11 nucleotides in length. Other aspects of the invention relates to pharmaceutical compositions comprising these dsRNA agents suitable for therapeutic use, and methods of inhibiting the expression of a target gene by administering these dsRNA agents, e.g., for the treatment of various disease conditions.

The present invention relates to a SEPT9 inhibitor for use in treatment of an HBV infection, in particular a chronic HBV infection. The invention in particular relates to the use of SEPT9 inhibitors for destabilizing cccDNA, such as HBV cccDNA. The invention also relates to nucleic acid molecules which are complementary to SEPT9 and capable of reducing the level of a SEPT9 mRNA. Also comprised in the present invention is a pharmaceutical composition and its use in the treatment of a HBV infection.

The present disclosure provides a DNA-targeting RNA that comprises a targeting sequence and, together with a modifying polypeptide, provides for site-specific modification of a target DNA and/or a polypeptide associated with the target DNA. The present disclosure further provides site-specific modifying polypeptides. The present disclosure further provides methods of site-specific modification of a target DNA and/or a polypeptide associated with the target DNA The present disclosure provides methods of modulating transcription of a target nucleic acid in a target cell, generally involving contacting the target nucleic acid with an enzymatically inactive Cas9 polypeptide and a DNA-targeting RNA. Kits and compositions for carrying out the methods are also provided. The present disclosure provides genetically modified cells that produce Cas9; and Cas9 transgenic non-human multicellular organisms.

One aspect of the present invention relates to double-stranded RNA (dsRNA) agent capable of inhibiting the expression of a target gene. The sense strand of the dsRNA agent comprises at least one thermally destabilizing nucleotide, and at least one said thermally destabilizing nucleotide occurring at a site opposite to the seed region (positions 2-8) of the antisense strand; and the antisense strand of the dsRNA agent comprises at least two modified nucleotides that provide the nucleotide a steric bulk that is less than or equal to the steric bulk of a 2′-OMe modification, wherein said modified nucleotides are separated by 11 nucleotides in length. Other aspects of the invention relates to pharmaceutical compositions comprising these dsRNA agents suitable for therapeutic use, and methods of inhibiting the expression of a target gene by administering these dsRNA agents, e.g., for the treatment of various disease conditions.

The present invention relates to chemical modification motifs for oligonucleotides. The oligonucleotides of the present invention, such as chemically modified antisense oligonucleotides, can have increased in vivo efficacy. The chemically modified oligonucleotides provide advantages in one or more of potency, efficiency of delivery, target specificity, toxicity, and/or stability. The chemically modified oligonucleotides have a specific chemical modification motif or pattern of locked nucleic acids (LNAs). The oligonucleotide (e.g. antisense oligonucleotide) can target RNA, such as miRNA or mRNA. Also provided herein are compositions comprising the chemically modified oligonucleotides and methods of using the chemically modified oligonucleotides as therapeutics for various disorders, including cardiovascular disorders.

The present invention is directed to a method for treating a neurodegenerative disease such as amyotrophic lateral sclerosis (ALS), Alzheimer disease, Parkinson's disease, Huntington's disease, frontotemporal degeneration, dementia with Lewy bodies, a motor neuron disease, or a demyelinating disease. The method comprises administering to a subject in need thereof a Ppargc1a activator 2-(4-tert-butylphenyl)-1H-benzimidazole, 2-[4-(1,1-dimethylethyl)phenyl]-1H-benzimidazole, in an effective amount. A preferred route of administration is oral administration.

Disclosed herein are double stranded nucleic acid molecules and pharmaceutical compositions comprising same useful in the treatment of, inter alia, acute and chronic inflammation, neuropathic pain, primary graft dysfunction (PGD) after lung transplantation in a subject in need thereof. The compounds are preferably chemically synthesized and modified dsRNA compounds, which down regulate or inhibit expression of Toll like receptor 4.

The present invention relates to very short heavily modified oligonucleotides which target and inhibit microRNAs in vivo, and their use in medicaments and pharmaceutical compositions.