Conditioned cell culture medium compositions and methods of use
Novel products comprising conditioned cell culture medium compositions and methods of use are described. The conditioned cell medium compositions of the invention may be comprised of any known defined or undefined medium and may be conditioned using any eukaryotic cell type. The medium may be conditioned by stromal cells, parenchymal cells, mesenchymal stem cells, liver reserve cells, neural stem cells, pancreatic stem cells and/or embryonic stem cells. Additionally, the cells may be genetically modified. A three-dimensional tissue construct is preferred. Once the cell medium of the invention is conditioned, it may be used in any state. Physical embodiments of the conditioned medium include, but are not limited to, liquid or solid, frozen, lyophilized or dried into a powder. Additionally, the medium is formulated with a pharmaceutically acceptable carrier as a vehicle for internal administration, applied directly to a food item or product, formulated with a salve or ointment for topical applications, or, for example, made into or added to surgical glue to accelerate healing of sutures following invasive procedures. Also, the medium may be further processed to concentrate or reduce one or more factors or components contained within the medium.
1. A composition for topical administration to a subject in need thereof comprising (1) conditioned cell culture medium, said medium comprising medium free of eukaryotic cells which has previously supported the growth of eukaryotic cells cultured in three-dimensions; wherein the cells cultured in three-dimensions comprise stromal cells and form a three-dimensional stromal tissue; and wherein the stromal cells comprise human fibroblast cells; and (2) a pharmaceutically or cosmetically acceptable carrier, wherein the composition is stable for up to 2 years in storage at −20° C.
2. The composition of claim 1 wherein the conditioned cell culture medium is in the form of a liquid, solid, lyophilized powder, gel or film.
3. The composition of claim 1 wherein the composition comprises the product of reduction or enrichment of one or more extracellular products derived from the conditioned media wherein reduction or enrichment is carried out by one or more protein separation techniques selected from immunoaffinity chromatography, gel chromatography, ion exchange, metal chelate affinity chromatography, HPLC purification and hydrophobic interaction chromatography.
4. The composition of claim 3 wherein the extracellular product(s) is an extracellular matrix protein.
5. The composition of claim 3 wherein the extracellular product(s) is a growth factor, anti-inflammatory mediator, enzyme, cytokine, hormone, clotting factor, regulatory factor, angiogenic factor, or anti-angiogenic factor.
6. The composition of claim 1 , wherein the stromal tissue comprises stromal cells attached to and substantially enveloping a framework composed of a biocompatible, non-living material formed into a three-dimensional structure.
7. The composition of claim 6 wherein the framework structure comprises a mesh, sponge or polymerized hydrogel.
8. The composition of claim 1 wherein the stromal cells comprise genetically engineered cells.
9. The composition of claim 1 wherein the fibroblast cells comprise skin cells.
10. The composition of claim 9 wherein the fibroblast cells comprise genetically engineered cells.