The present invention relates generally to the fields of immunology and vaccine technology. More specifically, the present invention relates to methods for freeze-drying biological preparations, including peptides, antigens, antibodies, and especially, cells. Importantly, the disclosed methods preserve the viability, infectivity and immunogenicity of cells from the Apicomplexa phylum, the Sarcocystidae family, and in particular, cells from the Toxoplasma genus.

A composition for cryopreservation of cells and tissues of human and other animals in a safe manner without using toxic substances such as DMSO, as well as for freeze preserving or freeze-drying of foods and pharmaceuticals. In embodiments, -poly-L-lysine is reacted with succinic anhydride so that 60% or more of amino groups are blocked; and, thus obtained polymer compound is added to Dulbecco-modified eagle MEM culture medium (DMEM) on market sale to form a cryopreservation liquid. In embodiments for foods or pharmaceuticals, the -poly-L-lysine derivative was added by 0.5-10 wt % to curb freeze concentration.

Embodiments of the present invention relate to methods of preparing a cell, tissue, organ or plant for cryopreservation, wherein the method includes contacting the cell, tissue, organ or plant with a composition including sucrose and/or sucralose.

Disclosed herein are compositions, devices, and methods that provide cellular materials in ready to use formats for experimental, therapeutic, and tissue engineering protocols. For example, compositions containing frozen or non-frozen cell present as aggregates are disclosed. Also disclosed a compositions containing cellular materials that after storage are suitable for dispersion, e.g. by 3D printing. Also disclosed is a kit for producing bioink compositions. Also disclosed is a closed system device comprising a cell material composition described herein.

A preparation for topical application comprising glycerol and plant tannins, wherein the plant tannins have the capacity to bind to glycerol so that the glycerol has filmogen quality.

The present application discloses a liquid composition for cryopreservation of a biological material comprising a polar aprotic solvent, a monohydric or polyhydric alcohol, an unbranched polysaccharide, a branched polysaccharide; and polyvinyl alcohol. Further provided are uses of said liquid composition for cryopreservation of abiological material and methods for preserving a biological material using said liquid composition.

The present application discloses a liquid composition for cryopreservation of a biological material comprising a polar aprotic solvent, a monohydric or polyhydric alcohol, an unbranched polysaccharide, a branched polysaccharide; and polyvinyl alcohol. Further provided are uses of said liquid composition for cryopreservation of abiological material and methods for preserving a biological material using said liquid composition.

A culture media, media supplement, or soluble matrix for cryopreservation or enhanced regenerative cell growth in culture and maintenance of multi-lineage differentiation potentiation. The inventive culture media, media supplement, or soluble matrix comprises a GAG composition comprising a sulfated GAG, such as chondroitin sulfate. A soluble matrix, a cell administration package or kit comprising the soluble matrix and a device for cell administration, and a method of use thereof, for administration of regenerative cells for treating a joint disease or other weakened or damaged tissue comprising the specified GAG compositions are further provided.

Recombinant cells including one or more transiently overexpressed genes encoding a drug transporter protein, wherein the recombinant cell is cryopreserved and activity of the drug transporter protein is detectable in a population of the recombinant cells prior to cryopreservation at an uptake ratio of at least 5. Processes of preparing cryopreserved transiently transfected recombinant cells, including transiently transfecting cells with one or more genes encoding a drug transporter protein and cryopreserving the transiently transfected recombinant cells within 48 hours of transfection. A population of the transiently transfected recombinant cells transiently overexpress the one or more genes encoding the drug transporter protein at a detectable level prior to cryopreserving and the detectable level is an uptake ratio of at least 5.

A composition contains nanobubbles containing hydrogen, oxygen, and nitrogen, and the use thereof. A composition containing, as an active ingredient, nanobubbles having a diameter of 30 micrometer or less and containing 0.45-0.55 ppm of hydrogen, 10-12.5 ppm of oxygen, and 7-8 ppm of nitrogen. A mitochondria-activating composition, cell growth promoting agent, cell preservation liquid or cryopreservation liquid containing this composition, and a method for using this composition, agent, or liquid. A food or beverage, or a food or beverage raw material, produced using this composition.