The invention is directed to a modified polysaccharide hydrogel, comprising a low molecular weight alginate with a specific M/G ratio. The modified polysaccharide is modified with a specific peptide, preferably comprising a cell-adhesion peptide. The modified polysaccharide hydrogel may be used as a hydrogel for the growth of cultured meat preferably as a sacrificial biopolymer.

The present invention relates to ex vivo methods for obtaining populations of human keratinocytes derived from human pluripotent stem cells (hPSCs). More particularly, the present invention relates to an automated method that combines in a sequential manner automated differentiation and amplification of a population of hPSC-derived keratinocytes.

Provided herein are methods that relate, in some aspects, to the incubation or culturing, such as to induce stimulation of expansion (proliferation), activation, costimulation and/or survival, of a composition of cells, such as a population of lymphocytes. In some aspects, provided are methods and reagents for the stimulation, e.g., of expansion (proliferation), survival or persistence, activation, costimulation, or other effect, of cell populations that involve binding of agents to a molecule on the surface of the cells, thereby providing one or more signals to the cells. In some cases, the reagents are reagents containing a plurality of binding sites for agents, such as multimerization reagents, and thus the one or more agents are multimerized by reversibly binding to the reagent, e.g., thereby creating a stimulatory reagent (multimerized agent), having stimulatory agents multimerized thereon. In some aspects, the multimerized agent can provide for expansion or proliferation or other stimulation of a population of cells, and then such stimulatory agents can be removed by disruption of the reversible bond. Also provided are compositions, apparatus and methods of use thereof.

A recombinant spider silk protein, consisting of no more than 800 amino acids, comprising a set of domains arranged according to the formula (NT)-REP-CT, wherein: the optional NT-domain, if present, comprises a sequence of 100 to 160 amino-acid residues derived from the N-terminal domain of a spider silk protein; the REP-domain comprises a sequence of 30 to 600 amino acid residues derived from the repetitive segment of a spider silk protein; and the CT-domain comprises a sequence of 70 to 120 amino acid residues derived from the C-terminal domain of a spider silk protein selected from: a sequence of 72 to 110 amino acid residues derived from the C-terminal domain of a spider silk protein, wherein the sequence comprises at least 7 residues independently selected from K, R, E and D; a sequence having at least 85% identity to SEQ ID NO: 15 or any one of SEQ ID NOs: 62-65 or 67-73; and a sequence having at least 70% identity to SEQ ID NOs: 64 or any one of SEQ ID NOs: 62-65 or 67-73, wherein the sequence comprises at least 7 residues independently selected from K, R, E and D.

Methods for generating pre-oligodendrocyte progenitor cells (pre-OPCs) and oligodendrocyte progenitor cells (OPCs) from human pluripotent stem cells are provided using chemically-defined culture media that allow for generation of pre-OPCs and OPCs in as little as three days. Culture media, isolated cell populations and kits are also provided.

A method for screening for target cells, a corresponding test kit and a use thereof, a method for screening cells, and a biological culture chip and a preparation method therefor and a use thereof. The method for screening target cells comprises: culturing said candidate single cells within a culture chamber provided with a signal screening layer, the signal screening layer comprising signal molecules for specific recognition of target molecules; on the basis of signals of the signal molecules, selecting target cells suitable for secreting the target molecules. The method for screening cells comprises: arranging candidate cells in a culture chamber to form target antibody-antigen-signal antibody complexes; on the basis of signals of signal molecules connected to the signal antibodies, determining whether the candidate cells are target cells. The biological culture chip comprises a matrix (100), and a biological culture space arranged on the surface of the matrix (100) and used for culturing biological cells.

A method of preparing a polyvinyl alcohol nanofiber membrane includes a material for controlling cell specific adhesion, and a nanofiber membrane that can maintain cellular functions such as cell activity and growth is prepared by adding aqueous solutions containing a polyacrylic acid and a glutaraldehyde crosslinking agent in a polyvinyl alcohol and materials capable of enhancing or regulating cell adhesion, electrospinning, treating with hydrochloric acid vapor and dimethylformaldehyde solvent and treating with sodium hydroxide to control the cell adhesion.

Methods are described herein for isolating clonal populations of T cells having a defined genetic modification. The methods are performed, at least in part, in a microfluidic device comprising one or more sequestration pens. The methods include the steps of: maintaining individual T cells (or precursors thereof) that have undergone a genomic editing process in corresponding sequestration pens of a microfluidic device; expanding the T cells into respective clonal populations of T cells; detecting, in one or more T cells of each clonal population, the absence of a cell surface marker that was present in the individual T cells (or precursors thereof); and detecting, in one or more T cells of each clonal population, the presence of a first nucleic acid sequence that is indicative of the presence of an on-target genome edit in the clonal population of T cells. Also described are compositions comprising one or more clonal populations of T cells isolated according to the methods disclosed herein.

The present invention relates to a method of expanding and generating a population of cytokine-induced killer (CIK) cells from peripheral blood mononuclear cells comprising steps of a) separating the mononuclear cells from the peripheral blood; b) transferring the separated mononuclear cells into a culture medium; c) adding cytokines into the culture medium to induce expansion and generation of the CIK cells; and d) obtaining the expanded and generated population of CIK cells.

A unit capable of promoting angiogenesis and/or nerve regeneration, including a gel component and proteoglycans, and the like that induces angiogenesis in cells and tissues transplanted into the body, and agents such as scaffolds for neural stem cells to be viable and proliferate after such transplantation.