Abstract: Disclosed herein are novel compounds, pharmaceutical compositions comprising such compounds and related methods of their use. The compounds described herein are useful, e.g., as liposomal delivery vehicles to facilitate the delivery of encapsulated polynucleotides to target cells and subsequent transfection of said target cells, and in certain embodiments are characterized as having one or more properties that afford such compounds advantages relative to other similarly classified lipids.

Abstract: The present invention provides an improved compositions and processes for preparing mRNA-loaded lipid nanoparticles (mRNA-LNPs). In some embodiments, the present invention provides mRNA-LNPs with exceptional stability and is particularly useful in cases where LNPs comprising low or no PEG-modified lipids are desired.

Abstract: Disclosed are cationic lipids which are compounds of Formula (I?). Cationic lipids provided herein can be useful for delivery and expression of mRNA and encoded protein, e.g., as a component of liposomal delivery vehicle, and accordingly can be useful for treating various diseases, disorders and conditions, such as those associated with deficiency of one or more proteins.

Abstract: Disclosed herein are compositions and methods for modulating the production of a protein in a target cell. The compositions and methods disclosed herein are capable of ameliorating diseases associated with protein or enzyme deficiencies.

Abstract: Disclosed herein are compositions and methods of modulating the expression of gene or the production of a protein by transfecting target cells with nucleic acids. The compositions disclosed herein demonstrate a high transfection efficacy and are capable of ameliorating diseases associated with protein or enzyme deficiencies.

Abstract: Disclosed herein are novel compounds, pharmaceutical compositions comprising such compounds and related methods of their use. The compounds described herein are useful, e.g., as liposomal delivery vehicles to facilitate the delivery of encapsulated polynucleotides to target cells and subsequent transfection of said target cells, and in certain embodiments are characterized as having one or more properties that afford such compounds advantages relative to other similarly classified lipids.

Abstract: The present invention provides, among other things, mRNA constructs and compositions and methods for reverse gene therapy, including administering to a subject in need of treatment a mRNA gene transfer construct comprising a reverse complement sequence encoding a protein of interest and a sequence encoding a human L1 retro-element.

Abstract: The present invention provides, among other things, methods of treating cystic fibrosis, comprising a step of administering to a subject in need of treatment a composition comprising an mRNA encoding a Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) protein, wherein the mRNA encoding the CFTR protein comprises a polynucleotide sequence at least 80% identical to SEQ ID NO: 1, wherein the mRNA is at a concentration of at least 0.4 mg/mL, and wherein the step of administering comprises inhalation.

Abstract: The present invention provides, among other things, methods of quantitating mRNA capping efficiency, particularly for mRNA synthesized in vitro. In some embodiments, the methods comprise chromatographic methods of quantifying capping efficiency and methylation status of the caps.

Abstract: The present invention provides, among other things, methods for purifying mRNA based on normal flow filtration for therapeutic use.

Abstract: The present invention provides, among other things, methods of delivering mRNA in vivo, including administering to a subject in need of delivery a composition comprising an mRNA encoding a protein, encapsulated within a liposome such that the administering of the composition results in the expression of the protein encoded by the mRNA in vivo, wherein the liposome comprises a cationic lipid of formula I-c: or a pharmaceutically acceptable salt thereof.

Abstract: Disclosed are cationic lipids which are compounds of Formula (I), (II), (III), (IV), (V), or (VI). Cationic lipids provided herein can be useful for delivery and expression of mRNA and encoded protein, e.g., as a component of liposomal delivery vehicle, and accordingly can be useful for treating various diseases, disorders and conditions, such as those associated with deficiency of one or more proteins.

Abstract: The present invention provides an improved process for lipid nanoparticle formulation and mRNA encapsulation. In some embodiments, the present invention provides a process of encapsulating messenger RNA (mRNA) in lipid nanoparticles comprising a step of mixing a solution of pre-formed lipid nanoparticles and mRNA at a low concentration.

Abstract: The present invention provides, among other things, methods of purifying messenger RNA (mRNA) including the steps of (a) precipitating mRNA from an impure preparation; (b) subjecting the impure preparation comprising precipitated mRNA to a purification process involving membrane filtration such that the precipitated mRNA is captured by a membrane; and (c) eluting the captured precipitated mRNA from the membrane by re-solubilizing the mRNA, thereby resulting in a purified mRNA solution. In some embodiments, a purification process involving membrane filtration suitable for the present invention is tangential flow filtration.

Abstract: The present invention provides, among other things, methods and compositions for effective delivery of messenger RNA (mRNA) to the central system (CNS). In particular, the present invention provides methods and compositions for administering intrathecally to a subject in need of delivery a composition comprising an mRNA encoding a protein, encapsulated within a liposome, such that the administering of the composition results in the intracellular delivery of mRNA in neurons in the brain and/or spinal cord. The present invention is particularly useful for the treatment of CNS diseases, disorders or conditions, such as spinal muscular atrophy.

Abstract: The present invention provides, among other things, a method of intra-articular delivery of messenger RNA (mRNA), comprising administering into a joint of a subject in need of delivery a composition comprising an mRNA encoding a protein, such that the administering of the composition results in expression of the protein encoded by the mRNA in the joint.

Abstract: Disclosed herein are novel compounds, pharmaceutical compositions comprising such compounds and related methods of their use. The compounds described herein are useful, e.g., as liposomal delivery vehicles to facilitate the delivery of encapsulated polynucleotides to target cells and subsequent transfection of said target cells, and in certain embodiments are characterized as having one or more properties that afford such compounds advantages relative to other similarly classified lipids.

Abstract: The present invention provides, among other things, methods and compositions for large-scale production of capped mRNA using SUMO-Guanylyl Transferase fusion protein.

Abstract: The present invention relates, in part, to methods for large-scale purification of mRNA. The method includes, at least, steps of forming an mRNA slurry, stirring the slurry, and vacuum or pressure filtering the slurry.

Abstract: Disclosed are cationic polymers comprising monomers such as those described in Formula (I). Such polymers can be useful for the preparation of therapeutic compositions [e.g., compositions comprising nucleic acids such as m RNA). Additionally, therapeutic compositions comprising these cationic, biodegradable polymers can have improved properties and reduced toxicity.