This invention provides compositions and methods for providing high product yield of transgenes encoding biopharmaceutical polypeptides in cyanobacteria and microalgae.

The invention relates to a tetanus neurotoxin (TeNT) conjugate comprising a TeNT conjugated to at least one masking moiety (i) through an acid labile linkage or (ii) comprising a masking polypeptide. The invention also relates to a composition comprising the TeNT conjugate and therapeutic use of the TeNT conjugate or composition for treating hypotonia in a subject or enhancing muscle power and/or muscle tone and/or muscle healing and/or sporting performance.

Provided herein are engineered non-catalytic, non-toxic tetanus toxin variants and methods of using such engineered tetanus toxin variants as low dose, protective vaccines that are non-toxic and more potent than their respective chemically inactivated toxoids. In addition, provided herein are conjugate vaccine carriers comprising engineered tetanus toxin variants and methods of using such conjugate vaccines to elicit T-cell dependent immune memory responses which can target a broad spectrum of microbial pathogens as a single vaccine.

The present technology relates to commercial-scale methods for purifying botulinum toxin compositions obtained from cell cultures. Purification methods according to the present disclosure are based on a series of filtration and chromatographic separation steps that produce a high-purity botulinum toxin composition, which comprises botulinum toxin protein molecules (˜150 kDa) in solution, which is free, essentially free, or substantially free of botulinum toxin complexes and animal products, and without precipitating or lyophilizing botulinum toxin protein molecules. The purification method according to the present disclosure uses no precipitation, lyophilization, or centrifugation steps, permitting production of highly pure, highly active, free botulinum toxin protein molecules (˜150 kDa) in solution, without the need for reconstitution by the end user.

A carrier molecule composition. Specific implementations may include: a carrier molecule including at least one cell penetrating peptide (CPP) where the carrier molecule may include at least one hydrophobic domain and where the carrier is non-covalently associated with a biologically active molecule in one of a micelle and a liposome.

A carrier molecule composition. Specific implementations may include: a carrier molecule including at least one cell penetrating peptide (CPP) where the carrier molecule may include at least one hydrophobic domain and where the carrier is non-covalently associated with a biologically active molecule in one of a micelle and a liposome.

The present invention is directed to a method for producing a condensed phase of a silk fusion protein, the method comprising the steps of preparing a solution of a silk fusion protein in an aqueous medium and concentrating the silk fusion protein in the aqueous medium, wherein the fusion protein is isolated from a recombinant production host and comprises a silk-like protein sequence and two separate non-silk terminal module sequences, such as cellulose binding modules, SpyCatcher domains, tenth type III module of Fibronectin, gamma-crystallin D, flanking the silk-like protein sequence; wherein the method is performed so that the silk fusion protein is not precipitated and subsequently dissolved to the aqueous medium. The present invention is also directed to using such fusion proteins as adhesives.

The present invention is directed to a method for producing a condensed phase of a silk fusion protein, the method comprising the steps of preparing a solution of a silk fusion protein in an aqueous medium and concentrating the silk fusion protein in the aqueous medium, wherein the fusion protein is isolated from a recombinant production host and comprises a silk-like protein sequence and two separate non-silk terminal module sequences, such as cellulose binding modules, SpyCatcher domains, tenth type III module of Fibronectin, gamma-crystallin D, flanking the silk-like protein sequence; wherein the method is performed so that the silk fusion protein is not precipitated and subsequently dissolved to the aqueous medium. The present invention is also directed to using such fusion proteins as adhesives.

The present invention provides a modified botulinum neurotoxin A (BoNT/A) L-chain protease that demonstrates enhanced cleaveage of human SNAP-23 (hSNAP-23) relative to unmodified (wild-type) BoNT/A L-chain protease, together with the use thereof for cleaving hSNAP-23.

The present invention provides a modified botulinum neurotoxin A (BoNT/A) L-chain protease that demonstrates enhanced cleaveage of human SNAP-23 (hSNAP-23) relative to unmodified (wild-type) BoNT/A L-chain protease, together with the use thereof for cleaving hSNAP-23.