Pharmaceutical composition containing human mesenchymal stem cell

• US 8,465,733 B2
• Filed: 10/27/2008
• Issued: 06/18/2013
• Est. Priority Date: 11/02/2007
• Status: Active Grant

• Current Assignee: JCR Pharmaceuticals Co., Ltd.
• Original Assignee: JCR Pharmaceuticals Co., Ltd.
• Inventors: Shirono, Hiroyuki, Byun, Youngjin, Kamei, Shoichiro, Imagawa, Kiwamu
• Primary Examiner(s): Carlson, Karen Cochrane
• Assistant Examiner(s): MOSS, NATALIE M
• Application Number:
  US12/740,758
• Publication Number:
  US 20110274663A1
• Time in Patent Office: 1,695 Days
• Field of Search: 424/93.7, 435/325
• US Class Current: 424/93.7
• CPC Class Codes: A61K 2035/124 the cells being hematopoietic, bone marrow derived or blood cells
• CPC Class Codes: A61K 35/28 Bone marrow; Haematopoietic stem cells; Mesenchymal stem cells of any origin, e.g. adipose-derived stem cells
• CPC Class Codes: A61K 35/48 Reproductive organs
• CPC Class Codes: A61K 9/0019 Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner non-active ingredients are additionally classified in A61K47/00
• CPC Class Codes: A61K 9/10 Dispersions; Emulsions A61K9/06 takes precedence; composition of dispersions, emulsions A61K47/00
• CPC Class Codes: A61P 29/00 Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
• CPC Class Codes: A61P 37/06 Immunosuppressants, e.g. drugs for graft rejection
• CPC Class Codes: C12N 2500/60 Buffer, e.g. pH regulation, osmotic pressure
• CPC Class Codes: C12N 2501/70 Enzymes
• CPC Class Codes: C12N 5/0663 Bone marrow mesenchymal stem cells (BM-MSC)

Abstract

Disclosed are a method for producing a frozen pharmaceutical composition prepared from cultured human mesenchymal stem cells and a pharmaceutical composition containing human mesenchymal stem cells. This method is a method for producing a frozen pharmaceutical composition containing human mesenchymal stem cells, which comprises the following steps in this order: (a) adding trypsin to human mesenchymal stem cells in a culture vessel to detach the cells from the surface of the culture vessel; (b) adding a bicarbonate Ringer'"'"'s solution containing human serum albumin to the detached cells to terminate the reaction with trypsin, and washing the cells with the bicarbonate Ringer'"'"'s solution containing human serum albumin; (c) suspending the cells in a bicarbonate Ringer'"'"'s solution containing human serum albumin and dimethyl sulfoxide; (d) putting the resulting suspension in a container which allows freezing of what is contained therein, and sealing the container; and (e) freezing the suspension put in the container.

Claims

1. A pharmaceutical composition which comprises human mesenchymal stem cells in a bicarbonate Ringer'"'"'s solution containing human serum albumin, dimethyl sulfoxide, 120-150 mEq/L of sodium ion, 3.6-4.4 mEq/L of potassium ion, 2.7-3.3 mEq/L of calcium ion, 0.9-1.1 mEq/L of magnesium ion, 100-125 mEq/L of chloride ion, 22-28 mEq/L of bicarbonate ion, and 4.5-5.5 mEq/L of citrate ion.

2. The pharmaceutical composition according to claim 1, wherein the osmotic pressure ratio of the solution to the physiological saline is 0.9-1.1, and the pH of the solution is 6.8-7.8.

3. The pharmaceutical composition according to claim 1, wherein the concentration of human serum albumin is 3-8 W/V %.

4. The pharmaceutical composition according to claim 1, wherein the concentration of dimethyl sulfoxide is 8-12 W/V %.

5. The pharmaceutical composition according to claim 1, wherein the human mesenchymal stem cells are those derived from human bone marrow.

6. The pharmaceutical composition according to claim 1, wherein the composition contains the human mesenchymal stem cells at a density of 1×

10⁵-1×

10⁸ cells/mL.

7. The pharmaceutical composition according to claim 1, wherein the composition contains the human mesenchymal stem cells at a density of 1×

10⁶-1×

10⁷ cells/mL.

8. The pharmaceutical composition according to claim 1, wherein the composition is held in a sealed container which can allow freezing of what is contained therein.

9. The pharmaceutical composition according to claim 8, wherein the composition is held in the sealed container at a volume of 1-30 mL.

10. The pharmaceutical composition according to claim 1, wherein the composition is in a frozen state.

11. A method for preparation of human mesenchymal stem cells free of the medium used for their culture comprising collecting the human mesenchymal stem cells from a culture vessel in which they were allowed to proliferate, which method further comprises the steps:

(a) adding trypsin to human mesenchymal stem cells in the culture vessel to detach the cells from the surface of the culture vessel, and

(b) adding a bicarbonate Ringer'"'"'s solution containing human serum albumin to the detached human mesenchymal stem cells to terminate the reaction with trypsin while washing the cells with the bicarbonate Ringer'"'"'s solution containing human serum albumin, 120-150 mEq/L of sodium ion, 3.6-4.4 mEq/L of potassium ion, 2.7-3.3 mEq/L of calcium ion, 0.9-1.1 mEq/L of magnesium ion, 100-125 mEq/L of chloride ion, 22-28 mEq/L of bicarbonate ion, and 4.5-5.5 mEq/L of citrate ion.

12. The method for preparation according to claim 11, wherein the, the osmotic pressure ratio of the solution to the physiological saline is 0.9-1.1, and the pH of the solution is 6.8-7.8.

13. The method for preparation according to claim 11, wherein the concentration of human serum albumin in the bicarbonate Ringer'"'"'s solution in step (b) is 0.5-3 W/V %.

14. A method for production of a frozen pharmaceutical composition comprising human mesenchymal stem cells, which method comprises the steps in this order:

(c) suspending the human mesenchymal stem cells prepared by a method of claim 11 above in a bicarbonate Ringer'"'"'s solution containing human serum albumin, dimethyl sulfoxide, 120-150 mEq/L of sodium ion, 3.6-4.4 mEq/L of potassium ion, 2.7-3.3 mEq/L of calcium ion, 0.9-1.1 mEq/L of magnesium ion, 100-125 mEq/L of chloride ion, 22-28 mEq/L of bicarbonate ion, and 4.5-5.5 mEq/L of citrate ion,

(d) putting the resulting suspension obtained by step (c) in a container which allows freezing of what is contained therein, and sealing the container, and

(e) freezing the suspension put in the container in above (d).

15. The method for production according to claim 14, wherein the concentration of human serum albumin in the bicarbonate Ringer'"'"'s solution in step (c) is 3-8 W/V %.

16. The method for production according to claim 14, wherein the concentration of dimethyl sulfoxide in the bicarbonate Ringer'"'"'s solution in step (c) is 8-12 W/V %.

17. The method for production according to claim 14, wherein the human mesenchymal stem cells are suspended at a density of 1×

10⁵-1×

10⁸ cells/mL in step (c).

18. The method for production according to claim 14, wherein the human mesenchymal stem cells are suspended at a density of 1×

10⁶-1×

10⁷ cells/mL in step (c).