Preparation of a blood platelet lysate for use in a cell culture medium for hybridoma cells
First Claim
1. A method for preparing a blood platelet lysate from plasma derived from animal whole blood to which a citrate has been added to avoid coagulation during storage of the blood, which method comprises:
- a) centrifuging said plasma so as to obtain a platelet rich paste,b) adding Ca2+ to said paste, in equimolar amounts in relation to the citrate content in the centrifuged plasma to lyse the platelets in said paste and to coagulate fibrinogen to produce a clear, light red liquid consists essentially of lysed platelets,c) sterile-filtering said clear, light red liquid to produce a liquid filtrate, andd) collecting the liquid filtrate which consists essentially of lysed platelets.
1 Assignment
0 Petitions
Accused Products
Abstract
A platelet lysate is produced from plasma derived from animal whole blood that contains an added citrate to prevent coagulation of the blood during storage. The lysate is prepared by centrifuging plasma to produce a platelet rich paste, adding calcium to the paste to lyse the platelets therein and coagulate fibrinogen to produce a clear liquid containing lysed platelets, sterile filtering the liquid and collecting a liquid filtrate containing the lysed platelets. The obtained lysate of platelets can be used to wholly or partly replace foetal calf serum in cell culture, such as in culture of hybridoma cells for preparing monoclonal antibodies.
65 Citations
8 Claims
-
1. A method for preparing a blood platelet lysate from plasma derived from animal whole blood to which a citrate has been added to avoid coagulation during storage of the blood, which method comprises:
-
a) centrifuging said plasma so as to obtain a platelet rich paste, b) adding Ca2+ to said paste, in equimolar amounts in relation to the citrate content in the centrifuged plasma to lyse the platelets in said paste and to coagulate fibrinogen to produce a clear, light red liquid consists essentially of lysed platelets, c) sterile-filtering said clear, light red liquid to produce a liquid filtrate, and d) collecting the liquid filtrate which consists essentially of lysed platelets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification