59 results about "Myotonic dystrophy" patented technology

An antisense compound for use in treating myotonic dystrophy DM1 or DM2, a method of enhancing antisense targeting to heart and quadricep muscles, and a method for treating DM1 or DM2 in a mammalian subject are disclosed. The oligonucleotide has 8-30 bases, with at least 8 contiguous bases being complementary to the polyCUG or polyCCUG repeats in the 3′UTR region of dystrophia myotonica protein kinase (DMPK) mRNA in DM1 or DM2, respectively. Conjugated to the oligonucleotide is a cell-penetrating peptide having the sequence (RXRR(B / X)R)2XB, where R is arginine; B is β-alanine; and each X is —C(O)—(CH2)n—NH—, where n is 4-6. The antisense compound is effective to selectively block the sequestration of muscleblind-like 1 protein (MBNL1) and / or CUGBP, in heart and quadricep muscle in a myotonic dystrophy animal model.

The disclosure provides novel conjugates comprising antisense oligonucleotides that hybridize to a DMPK transcript and a 3E10 antibody or binding fragment thereof. Also considered are these conjugates further comprising MBNL1 polypeptides. Methods of treating myotonic dystrophy using these conjugates and kits comprising these conjugates are also considered. Wherein the conjugates are suitable for delivery to muscle cells.

The invention provides compounds, compositions and methods for treating myotonic dystrophy. The compounds can selectively bind to CUG repeats in RNA, or to CTG repeats in DNA, and inhibit replication of the nucleic acids.

In certain embodiments, the present invention provides compositions and methods for treating myotonic dystrophy.

Disclosed are RNA targeting compounds having the formula:wherein j is an integer from 1 to 100; each i is the same or different and is zero or an integer from 1 to 100; each Z1 represents the same or different linking moiety; each R1 is the same or different and represents an alkyl group or an aryl group; each Q1 represents the same or different RNA binding ligand; Q2 is an alkyl group; Q3 is a halogen, an alkyl group, an aryl group, or an amine. Also disclosed are RNA targeting compounds that include a polymer backbone and two or more pendant RNA binding ligands that are bound to the polymer backbone. Methods for using the subject RNA targeting compounds to treat myotonic dystrophy and other diseases are also disclosed, as are compounds that can be used to prepare the subject RNA targeting compounds.

Provided herein are peptide-linked morpholino (PPMO) antisense oligonucleotides that target the poly CUG repeat tract in the 3' untranslated region of the gene encoding dystrophia myotonica-protein kinase (DMPK) and methods for systemic administration of the same for the treatment of mytonic dystrophy type I (DM1).

Provided are tricyclo-DNA (tc-DNA) AON and methods employing tc-DNA AON for modifying splicing events that occur during pre-mRNA processing. Tricyclo-DNA (tc-DNA) AON are described that may be used to facilitate exon skipping or to mask intronic silencer sequences and / or terminal stein-loop sequences during pre-mRNA processing and to target RNase-mediated destruction of processed mRNA. Tc-DNA AON described herein may be used in methods for the treatment of Duchenne Muscular Dystrophy by skipping a mutated exon 23 or exon 51 within a dystrophin gene to restore functionality of a dystrophin protein; in methods for the treatment of Spinal Muscular Atrophy by masking an intronic silencing sequence and / or a terminal stem-loop sequence within an SMN2 gene to yield modified functional SMN2 protein, including an amino acid sequence encoded by exon 7, which is capable of at least partially complementing a non-functional SMN1 protein; and in methods for the treatment of Steinert's Myotonic Dystrophy by targeting the destruction of a mutated DM1 mRNA comprising 3′-terminal CUG repeats.

The invention provides rationally designed multi-targeting therapeutic agents for myotonic dystrophy type 1 (DM1), an incurable neuromuscular disease that originates in an abnormal expansion of CTG repeats (CTGexp) in the DMPK gene. The rationally designed small molecules target the DM1 pathobiology in three distinct ways: (1) binding the expanded trinucleotide repeat, CTGexp, and inhibiting its transcription to the toxic CUGexp RNA, (2) binding the CUGexp RNA and releasing sequestered muscleblind-like protein (MBNL1), and (3) cleaving the toxic CUGexp in an RNase-like manner. Importantly, the compounds can reduce the levels of CUGexp in DM1 model cells and reverse two separate CUGexp-induced phenotypes of DM1.