Preparation and storage of pancreatic islets
First Claim
1. A method of isolating islets from a pancreas, the method comprising:
- at least partially digesting the pancreas in a warm collagenase solution to form a warm digest;
adding a cold preservative solution to the warm digest to form a mixture;
the cold preservative solution comprising D-mannitol, at least 80 mM K-lactobionate, and a buffer;
agitating the warm digest and preservative solution mixture at a temperature of about 0°
C. to about 15°
C. to cool and form a cold digest comprising solid and liquid material which comprises the pancreatic islets; and
separating said islets from the cold digest.
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Abstract
A method, a solution and a chamber for the preparation and storage of pancreatic islets. The method includes contacting a pancreas with a warm collagenase solution, digesting the pancreas in the warm collagenase solution to form warm digest, adding cold preservative solution to the warm digest, agitating the warm digest/cold preservative solution at a temperature between about 0° and 15° C., to thereby further digest the partially digested pancreas included in the warm digest, to form cold digest and collecting liquid from the cold digest to form isolated islets. The cold preservative solution and a pancreatic islet preservative solution of the present invention include D-mannitol, K-lactobionate and a buffer.
41 Citations
10 Claims
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1. A method of isolating islets from a pancreas, the method comprising:
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at least partially digesting the pancreas in a warm collagenase solution to form a warm digest; adding a cold preservative solution to the warm digest to form a mixture;
the cold preservative solution comprising D-mannitol, at least 80 mM K-lactobionate, and a buffer;agitating the warm digest and preservative solution mixture at a temperature of about 0°
C. to about 15°
C. to cool and form a cold digest comprising solid and liquid material which comprises the pancreatic islets; and
separating said islets from the cold digest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification