Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Daniel Hans Rapoport

Charli Kruse

Philipp Ciba

Miriam Voigt

Charlotte Walter

Bianka Grunow

The invention relates to a method for cultivating cells in adhesion culture, comprising at least the following steps: a) dissolving or suspending a cross-linkable, biocompatible material having adhesion points for cells in a cell culture medium; b) suspending cells in the cell culture medium, which contains the cross-linkable, biocompatible material, or in a medium that contains at least one component that is required for the cross-linking of the cross-linkable, biocompatible material; c) introducing the cell suspension into a medium in drops under conditions that initiate or permit the cross-linking of the biocompatible material, wherein either the cell suspension or the medium into which the cell suspension is introduced in drops contains the cross-linkable biocompatible material; d) forming stable, preferably porous capsules from cross-linked biocompatible material, which capsules contain incorporated adherent cells; e) proliferating the adherent cells in the capsules for a specified time period; f) breaking up the capsule material by means of a physical or chemical stimulus and releasing the cells as a cell suspension. In an especially preferred embodiment of the invention, the method is performed cyclically, in that the cells released in step f) are suspended anew in a cell culture medium that contains a cross-linkable, biocompatible material or in a medium that contains at least one component that is required for the cross-linking of the cross-linkable, biocompatible material and steps c)-f) are repeated at least once.

Method for cultivating cells in adhesion culture by using a cell culture carrier in capsule form, and cell culture carrier therefor

The invention relates to an in vitro method for producing spontaneously contracting fish cell aggregates, to the fish cell aggregates obtained thereby, and to the use thereof, in particular for testing biological active substances and pharmaceuticals. The in vitro method according to the invention for producing contracting fish cell aggregates comprises the following steps: a) mechanical comminution and/or partial enzymatic digestion of fish embryos or fish larvae; b) transfer of the comminuted and/or partially digested fish tissue into an enzyme-free medium and removing the supernatant by centrifuging to obtain a cell pellet; c) re-suspension of the cell pellet in a cell culture medium; d) culturing the cells, with the medium being changed at least once, until spontaneously contracting cell aggregates form.

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Luebeck, Germany

Daniel Hans Rapoport