The present invention discloses a serum-free medium for full suspension culture of MDCK cells and a preparation method of the serum-free medium. The serum-free medium for full suspension culture of the MDCK cells comprises basic metabolic nutrients, nucleotide, vitamins, inorganic salts, a shear force protective agent, a cell clustering resisting agent, a pH buffer agent, a pH indicator, an influenza virus proliferation accelerant and other additives. The preparation method of the serum-free medium for the full suspension culture of the MDCK cells comprises the following steps: 1) preparing a mixed solution: dissolving and mixing raw materials; and 2) regulating pH: regulating the pH of the mixed solution to 6.3 to 6.7, and setting a constant volume to obtain the serum-free medium for the full suspension culture of the MDCK cells. The medium supports the high-density full-suspension culture of the MDCK single cells, greatly shortens a time for educating the MDCK cells from adherent cells into the serum-free full suspension cells, and is applicable to the mass production of biological products, and particularly veterinary biological products.

The present disclosure provides methods for producing bioengineered tissue along with an apparatus and other relevant compositions employed in generation thereof.

The current invention relates to a process for the manufacturing of extracellular vesicles (EVs) associated with proteins, derived from mesenchymal stromal cells (MSCs), said process comprises the steps of: - Purifying EVs from a cell medium comprising MSCs, wherein said purifying occurs via at least one filtration step of said medium; followed by - a concentration step of the filtrate of said at least one filtration step, wherein said EVs are concentrated by means of tangential flow filtration in a TFF device; and - wherein during said TFF step the EVs are associated with one or more exogenous proteins inside of said TFF device, or in a vessel fluidly connected to said TFF device to which said EVs are transferred from said TFF. The current invention also relates to a pharmaceutical composition comprising a therapeutically effective amount of EVs associated with proteins, and the use thereof.

The present invention relates to a composition comprising a growth medium comprising a carbon source, a nitrogen source, a sulphur containing amino acid and Ferric pyrophosphate; wherein the growth medium has no blood; wherein the growth medium is configured to allow growth of a living microorganism. Further, the invention also relates to method to prepare the composition.

There is described herein a method of enriching a population of stem cells for hematopoietic progenitors. The method comprises inducing hematopoietic differentiation in a population of human embryonic stem cells or human induced pluripotent stem cells; sorting the population based on expression of CD43 and at least one of CD34, CD31 and CD144; and selecting a fraction that is at least one of CD34+CD43−, CD31+CD43− and CD144+CD43−. Also provided are populations of hematopoietic progenitors obtained by the methods described herein.

The specification describes an improved serum-free animal cell culture medium, which can used for the production of a protein of interest. Ornithine, or a combination of ornithine and putrescine can be added to serum-free media or chemically defined media to improve viable cell density, to reduce cell doubling time, and to increase the production of a protein of interest.

A method for inducing differentiation into pancreatic α cells includes: a step (a) of culturing endodermal cells, which have been induced to differentiate from pluripotent stem cells, in the presence of a bone morphogenetic protein (BMP) signaling inhibitor, and retinoic acid or a retinoic acid analog to induce differentiation into primitive gut tube (PGT) cells; a step (b) of culturing the primitive gut tube (PGT) cells to induce differentiation into pancreatic endocrine precursor (EP) cells; and a step (c) of culturing the pancreatic endocrine precursor (EP) cells to induce differentiation into pancreatic α cells, in which the step (b) and the step (c) are performed in the absence of ascorbic acid.

Methods for inducing human erythroid progenitor cells from hematopoietic stem cells are provided using chemically-defined culture media. Erythroid progenitors generated by the methods include megakaryocyte/erythroid progenitor cells (MEP cells) and CD71+CD235+CD34− erythroid cells, which can be further differentiated into red blood cells. Culture media, isolated cell populations and kits are also provided.

The present invention relates to cell culture media supplements or complete media compositions comprising plant-produced heterologous recombinant human albumin, as well as methods of making the cell culture media, and methods of using the supplemented cell culture media to improve viability, productivity, and growth characteristics of cultured cells.

Provided is a method for separating and extracting mesenchymal stem cells from the human umbilical cord. The method uses healthy neonatal umbilical cord tissue; after cleaning and disinfection, mechanically pulverising same, separating the Wharton's jelly, and after treating with erythrocyte lysate, carrying out suspension culture in a serum-free culture medium. Replacing the liquid every 3-5 days; after the plate adherence rate reaches 30-70%, carrying out trypsin digestion, and then collecting the cells by centrifugation for passage amplification, until the rate of confluence of the cells reaches 80-90% confluence, thereby obtaining high purity umbilical cord mesenchymal stem cells.