Cryopreservative compositions and methods
This disclosure describes a cryopreservative composition and methods for storing cells. Generally, the cryopreservative composition includes a sugar component and a sugar alcohol component, and is effective for storing and recovering cells without requiring dimethyl sulfoxide (DMSO).
1. A cryopreservative composition comprising:
cryopreservatives, wherein total cryopreservatives of the composition consist of:
a sugar component;
a total concentration of 0.1 mM to 2 M of sugar alcohol components; and
an amino acid or peptide.
2. The cryopreservative composition of claim 1 wherein the sugar component is provided at a concentration of 0.1 mM to 300 mM.
3. The cryopreservative composition of claim 1 wherein the sugar component comprises a disaccharide.
4. The cryopreservative composition of claim 1 wherein the sugar component comprises trehalose, fructose, sucrose or glucose.
5. The cryopreservative composition of claim 1 wherein the sugar alcohol components are provided at a total concentration of 0.1 M to 2 M.
6. The cryopreservative composition of claim 5 wherein the sugar alcohol components are provided at a total concentration of 0.1 M to 1.4 M.
7. The cryopreservative composition of claim 1 wherein the sugar alcohol components comprise glycerol, arabitol, sorbitol, ethylene glycol, inositol, xylitol, mannitol, or a combination thereof.
8. The cryopreservative composition of claim 1 wherein the sugar alcohol components comprise glycerol at a concentration of 0.6 M to 1.4 M.
9. The cryopreservative composition of claim 1 wherein the amino acid or peptide is provided at a concentration of from 0.1 mM to 300 mM.
10. The cryopreservative composition of claim 9 wherein the amino acid or peptide comprises proline, valine, alanine, creatine, isoleucine, histidine, taurine, ectoine, betaine, dimethylglycine, ethylmethylglycine, or an RGD peptide.
11. The cryopreservative composition of claim 1 further comprising a cell.
12. The cryopreservative composition of claim 1 wherein the cryopreservative composition is free of DMSO.
13. A method of cryopreserving a cell, the method comprising:
adding a cell to the composition of claim 1 ;
freezing the composition;
storing the frozen composition at a temperature below 0° C.;
thawing the composition;
removing the cell from the thawed composition; and
culturing the cell under conditions effective for the cell to remain viable.
14. The method of claim 13 wherein freezing the composition comprises at least one round of cooling, re-warming, and further cooling.
15. The cryopreservative composition of claim 1 , wherein the total
cryopreservatives of the composition consist of:
the sugar component;
the total concentration of 0.1 mM to 2 M of sugar alcohol components; and
the amino acid.
16. A cryopreservative composition comprising:
cryopreservatives, wherein total cryopreservatives of the composition consist of:
a sugar component;
a total concentration of 0.1 mM to 2 M of sugar alcohol components;
an amino acid or peptide; and
one or more components selected from superoxide dismutase, glutathione, vitamin C, vitamin E, lipoic acid, ubiquinol, uric acid, alpha monothioglycerol, and a combination thereof.