The invention provides compositions and methods for effective lysosomal targeting mediated by PCSK9. In particular, the compositions and methods provided by the invention may be used to treat lysosomal storage diseases such as Pompe Disease and Sanfilippo Syndrome Type B, and they may be used for targeting lysosomal enzymes to the various muscles of the human body.

This disclosure relates to oligonucleotides, compositions and methods useful for reducing PCSK9 expression, particularly in hepatocytes. Disclosed oligonucleotides for the reduction of PCSK9 expression may be double-stranded or single-stranded, and may be modified for improved characteristics such as stronger resistance to nucleases and lower immunogenicity. Disclosed oligonucleotides for the reduction of PCSK9 expression may also include targeting ligands to target a particular cell or organ, such as the hepatocytes of the liver, and may be used to treat hypercholesterolemia, atherosclerosis, and/or one or more symptoms or complications thereof.

A vaccine construct comprising an antigenic PCSK9 peptide and an immunogenic carrier, and methods of using the same that are effective to lower blood cholesterol levels in a mammal and treat dyslipidemias and related disease states in a mammal without the frequency of administration required by passive immunity strategies.

The present disclosure provides oligonucleotide compositions comprising (1) an oligonucleotide of the present disclosure, e.g., an ASO, siRNA, shRNA, DNA or RNA aptamer, gene therapy vector, miRNA, miRNA mimic, antimiR, DNA or RNA decoy, CpG oligonucleotide, or any therapeutic or diagnostic oligonucleotide known in the art, and (ii) a caprylic acid derivative, e.g., 5-CNAC. In some aspects, the oligonucleotide composition is formulated for delivery to the gastrointestinal tract. Thus, some aspects, the present disclosure provides oligonucleotide compositions for oral delivery comprising a therapeutic or diagnostic oligonucleotide (e.g., an ASO) and a caprylic acid derivative (e.g., 5-CNAC or de derivative thereof).

Provided herein are cyclic polypeptide compounds that can, e.g., bind specifically to human proprotein convertase subtilisin/kexin type 9 (PCSK9) and optionally also inhibit interaction between human PCSK9 and human low density lipoprotein receptor (LDLR), and pharmaceutical compositions comprising one or more of these compounds. Also provided are methods of reducing LDL cholesterol level in a subject in need thereof that include administering to the subject one or more of the cyclic polypeptide compounds or a pharmaceutical composition provided herein.

Nucleic acid products are provided that modulate, interfere with or inhibit PCSK9 gene expression. The products include compounds that comprise at least a first region of linked nucleosides having at least a first nucleobase sequence that is at least partially complementary to at least a portion of RNA transcribed from a PCSK9 gene, wherein the first nucleobase sequence is selected from the following sequences, or a portion thereof: SEQ ID NOs 1 to 250 or 501 to 543.

The present embodiments provide methods, compounds, and compositions useful for inhibiting PCSK9 expression, which may be useful for treating, preventing, or ameliorating a disease associated with PCSK9.

Disclosed are compounds of Formula I, or a salt thereof:

##STR00001##

where A, B, D, X, R.sup.1, R.sup.2 and R.sup.8 are as defined herein, which compounds have properties for antagonizing PCSK9. Also described are pharmaceutical formulations comprising the compounds of Formula I or their salts, and methods of treating cardiovascular disease and conditions related to PCSK9 activity, e.g. atherosclerosis, hypercholesterolemia, coronary heart disease, metabolic syndrome, acute coronary syndrome, or related cardiovascular disease and cardiometabolic conditions.

Provided herein, inter alia, are fusion DNA constructs comprising improved protease recognition sequences for expressing and purifying one or more polypeptides of interest as well as methods for producing one or more polypeptides of interest in a recombinant host cell.

Provided herein are compositions for gene modification or editing and methods of using same to treat or prevent certain conditions. Specific compositions and methods capable of safely and effectively editing gene targets expressed in the liver to durably lower LDL-C thereby treating a leading cause of cardiovascular disease are disclosed.