Disclosed is an ex vivo model for subcutaneous injection and aims at providing an in vitro method including the steps of i) immersing a skin explant in a solidifiable liquid matrix such that the upper face of the epidermis is not covered, which matrix is itself contained in a cell culture insert, the bottom of which consists of a porous membrane, and (ii) solidifying this matrix so as to trap the immersed portion of this skin explant, wherein the upper face of the epidermis is not covered, and adhering this same matrix to the side walls and the porous membrane of the insert, wherein the skin explant includes a thickness of at least 5 mm of hypodermis.

A cell culture carrier includes a stimulus-responsive substrate for cell culture comprising a stimulus-responsive polymer and an external signal receiving material, an active substance is supported on the stimulus-responsive substrate for cell culture.

A network of neurospheres (NNet) mimicking the small-world hierarchic-modular architecture of mammalian brains, created by synthetically building a network of inter-connected individual brain microphysiological systems (MPSs).

The present invention is directed to therapeutic multifunctional immature dental pulp stem cells (IDPSCs), and IDPSCs multi-lineage compositions. The invention is further directed to the use of IDPSCs and compositions to reduce the risk of and/or treat degenerative diseases or for other medicinal and aesthetic purposes.

The present disclosure describes hydrogels which are micropatterned with a network of wells for cell culture. In a preferred embodiment, the micropatterned hydrogels are embedded with a nanomaterial. Further described are methods of forming the micropatterned hydrogels and methods of culturing cells in the micropatterned hydrogels. The hydrogels can be natural or synthetic.

Methods for producing hepatocytes from pluripotent human stem cells are disclosed herein. The stem cells are plated on a cell culture substrate comprising two laminins. The stem cells are then exposed to different cell culture mediums to induce differentiation. The resulting hepatocytes have higher metabolic capacity compared to hepatocytes cultured on different substrates.

Described are methods for producing tissue constructs, tissue constructs produced by the methods, and their use. The described method of producing a tissue construct comprises providing a granular tissue, depositing one or more filaments on or in the granular tissue, each filament comprising an ink, and gelling or fusing the granular tissue, thereby producing the tissue construct.

The invention relates to a mctliod for bio-printing a thrcc-dimensional biological structure containing liv ing cells having at least two different materials for the bio-printing. Said method is distinguished by the fact that, in at least one step, one of the materials for printing is applied or introduced by printing droplets (drop-on-dentand) printing. In particular, this method is suitable for printing tissue structures. including those which have supply structures. Such structures are in particular cardiac structures, liver structures, kidney structures, alveolar structures, skin struchircs or neural structuies. The invention further relates to a biological three-dimensional structure thus obtainable. Finally, the invention relates to the use of a three-dimensional structure according to the invention as a tissue model, in particular as a model for tissue genesis, for example suitable for testing therapy forms or for the stratification of a therapy or for testing or identifying active substance candidates.

Ex-vivo culture systems are provided. Accordingly there is provided a culture system comprising a culture medium and a precision-cut tissue slice placed on a tissue culture insert, wherein the precision-cut tissue slice is maintained in a highly oxygenated atmosphere containing at least 50% oxygen and wherein said culture is rotationally agitated facilitating intermittent submersion of the tissue slice in the culture medium. Also provided are methods of culturing a tissue and methods of using the culture system for selecting a drug for the treatment of a disease.

The present disclosure provides a method of producing uniformly sized organoids/multicellular spheroids using a microfluidic device having an array of microwells. The method involves several successive steps. First, a microfluidic device containing parallel rows of microwells that are connected with a supplying channel is filled with a wetting agent. The wetting agent is a liquid that is immiscible in water. For example, the wetting agent may be an organic liquid such as oil. In the next step, the agent in the supplying channel and the microwells is replaced with a suspension of cells in an aqueous solution that contains a precursor for a hydrogel. Next, the aqueous phase in the supplying channel is replaced with the agent, which leads to the formation of an array of droplets of cell suspension in the hydrogel precursor solution, which were compartmentalized in the wells. The droplets are then transformed into cell-laden hydrogels. Subsequently, the agent in the supplying channel is replaced with the cell culture medium continuously flowing through the microfluidic device and the cells within the hydrogels are transformed into multicellular spheroids.