The invention belongs to the field of cosmetic biotechnology, and specifically relates to an Enterobacter that degrades hyaluronic acid and a cultivation method and application thereof. The Enterobacter sp. CGJ001 of the present invention was deposited in the China General Microbiological Culture Collection Center on Oct. 10, 2019, and the preservation number is CGMCC NO. 18661. The Enterobacter strain can efficiently produce hyaluronidase, and can be used in the process of preparing low molecular hyaluronic acid and oligomeric hyaluronic acid from high molecular hyaluronic acid. The enzyme has high specificity towards hyaluronic acid, excellent thermal stability and pH stability, and is suitable for large-scale industrial application. Thus, it can replace the traditional hyaluronidase extracted from expensive animal tissues. There should be broad application prospects in the fields of medicine and cosmetics.

Genetically programmed microorganisms, such as bacteria or virus, pharmaceutical compositions thereof, and methods of modulating and treating cancers are disclosed.

Modified PH20 hyaluronidase polypeptides, including modified polypeptides that exhibit increased stability and/or increased activity, are provided. Also provided are compositions and formulations and uses thereof.

Provided herein are stable aqueous pharmaceutical compositions comprising high concentration formulations of a bispecific epidermal growth factor receptor (EGFR)/hepatocyte growth factor receptor (c-Met) antibody and methods of preparing the same. Also provided herein are methods of treating cancer in a subject in need thereof by subcutaneously administering to the subject the stable aqueous pharmaceutical compositions as disclosed herein.

The invention discloses a recombinant Corynebacterium glutamicum for efficient synthesis of highly pure hyaluronic acid and oligosaccharides thereof, belonging to the technical field of bioengineering. The recombinant Corynebacterium glutamicum constructed in the present invention can produce hyaluronic acid with a yield up to 40g/L, and a crude product purity of 95%. Addition of exogenous hyaluronic acid hydrolase and optimization of the fermentation conditions results in hyaluronic acid oligosaccharides with specific molecular weight, and can further improve the yield of hyaluronic acid to 72 g/L. The invention lays a solid foundation for the efficient synthesis of highly pure hyaluronic acid by microorganisms, and the constructed recombinant Corynebacterium glutamicum is suitable for industrial production and application.

The disclosure relates to compositions and methods for treating infection, allergic reactions, colitis, IBD, contact dermatitis, psoriasis, atopic dermatitis, graft vs. host disease and disorders and other disease and disorders comprising dendritic cell activation as well as compositions and method to improve allergen sensitization.

The present disclosure provides a method of treating fibrosis in a subject in need thereof by administering a composition that comprises a protein having hyaluronidase activity to a region of the subject having fibrosis. Also provided are methods of reducing an amount or severity of fibrosis in a subject in need thereof comprising administering a composition that comprises a protein having hyaluronidase activity to a region of the subject having fibrosis, wherein the administration results in a reduction in a grade of severity of the fibrosis.

Genetically programmed microorganisms, such as bacteria or virus, pharmaceutical compositions thereof, and methods of modulating and treating cancers are disclosed.

The present invention provides, among other things, methods of formulating nucleic acid-containing nanoparticles with an enzyme to afford efficient delivery of payload to a cell or tissue of interest via subcutaneous administration. In some embodiments, the present invention provides a process in which mRNA-loaded lipid nanoparticles are co-mixed with various amounts of hyaluronidase and administered via subcutaneous administration. The resulting payload can be efficiently delivered to the liver and other organs or tissues of a treated subject.

The disclosure provides methods using mixed substrate cofeeding for bioproduct synthesis, which enables faster, more efficient, and higher yield carbon conversion in various organisms.