Methods and compositions for the preservation of cells and tissues
Disclosed are methods for the preservation and storage of living biological tissues, organs, and populations of isolated cells. Also disclosed are compositions and methods to permit biological samples (including e.g., cells, cell cultures, tissues, and organs) to be harvested from suitable donor animals, stored for prolonged periods under refrigerated, cryogenic, or near-freezing, and then transported and implanted into a site within the body of a selected recipient animal, all without significant loss of cellular viability, tissue integrity, and/or biochemical function of the stored biological sample.
1. A composition comprising:
a) a pharmaceutically acceptable biological buffer, medium, storage buffer, or organ transport solution suitable for storing a population of explanted animal cells, tissues, or organs;
b) at least a first polyethylene glycol having an average molecular weight of about 600 Da;
c) at least a second polyethylene glycol having an average molecular weight of about 3.35 kDa; and
d) at least a first antioxidant and a chelating agent,
wherein each of b) and c) is present in said composition in an amount effective to prolong the viability of said population of explanted animal cells, tissues or organs when maintained substantially in said composition, as compared to the maintenance of said cells, tissues, or organs stored in the biological buffer, growth medium, or organ storage/transport solution alone.
2. The composition of claim 1 , wherein each of said first and said second polyethylene glycols is present in said composition at a concentration of from between about 0.5% and about 10% (vol./vol.).
3. The composition of claim 1 , wherein said at least a first antioxidant is 2,6-di -tert-butyl-4-methylphenol, that is present in said composition at a concentration of from about 0.00003% to about 0.3% (wt./vol.).