125results about "Cell encapsulation" patented technology

The present disclosure provides methods of making tissue-derived epithelial organoids. In particular, the present disclosure provides a tissue-derived epithelial organoid embedded in a hydrogel suspended in a culture medium. The present disclosure further provides methods of using such organoids.

Embodiments of the present invention may provide protecting, preserving, and even repairing biological cells during in vitro processing. A uniform environment such as a protective layer with exogeneous lipids may be formed around biological cells which may interact with the plasma membranes of the cells.

A therapeutic device includes a tubular body including a lumen extending therethrough, a wall of the tubular body including a first composite layer, a second composite layer; and a reservoir between the first and second composite layers, the reservoir being configured to receive and contain a biological moiety. In another embodiment, a therapeutic device includes a toroidal therapeutic device having a first opening therein and a hollow interior, the toroidal therapeutic device having a wall including a first permeable composite layer, a second permeable composite layer, and a reservoir between the first and second composite layers, the reservoir being configured to receive and contain a biological moiety.

Systems and methods consistent with the present invention generally relate to microorganospheres (MOSs), and methods and apparatuses for forming and using MOSs. More particularly, in some embodiments, systems and methods consistent with the invention relate to the methods and apparatuses for forming and using MOSs generated from hepatocytes. MOSs that are generated from hepatocytes are suitable for testing liver toxicity and drug induced liver injury effects of various agents.

The present invention relates to specific liver microtissues comprising hepatocytes of at least three different phenotypes derived from induced pluripotent stem cells encapsulated in a single three-dimensional closed microcompartment. The present invention also relates to methods for preparing such liver microtissues and their use in the treatment or prevention of liver failure.

The present disclosure provides thymic cells, thymic organoids, and animal models comprising such thymic cells and thymic organoids. It also provides methods for inducing differentiation of pluripotent stem cells into definitive endoderm (DE), anterior foregut endoderm (AFE), ventral pharyngeal endoderm (VPE), thymic epithelial progenitor (TEP) cells, thymic epithelial cells (TECs) and thymic organoids in vitro and in vivo.

The present disclosure concerns genetic modification of fibroblasts or fibroblast-derived materials (including of the fibroblasts from which the fibroblast-derived materials are derived). In specific aspects, they are modified such that they may express one or more surface markers that allow targeting to a tissue and / or organ of interest. In some aspects, they are modified such that they may lose one or more surface markers that then allow targeting to a tissue and / or organ of interest. In certain aspects, one or more surface markers are modified that then allows targeting to a tissue and / or organ of interest.

The present invention relates to a method for producing a stable hydrogel-cell composition comprising the steps of:a) providing a reaction mixture comprising at least one polymerizable substrate and at least one enzyme capable of polymerizing said at least one substrate, and cells, andb) incubating the mixture of step a) to form a stable hydrogel-cell composition.

Systems and methods for encapsulating cells in hydrogel tubes for cell growth within hydrogel tubes are described. In aspects, a system includes a plurality of peristaltic pumps and a plurality of pulse dampeners to provide oscillatory-controlled flow rates of each of a cell solution, a hydrogel solution, and a cross-linking solution to an extruder configured to form hollow hydrogel tubes having suspended biological cells in an interior

Methods and systems are provided for analyzing the ability of immune cells to kill target cells based on the effectiveness of mitochondria of the immune cells. The systems and methods further can be used for transplanting healthy mitochondria into immune cells to increase their effectiveness against target cells. The methods described herein can be used in treatment of cancer, mitochondrial diseases, and certain metabolic diseases.

The invention relates to a method to independently identify by fluorescence microscopy different cell types forming multicellular structures in co-culture thanks to a fluorescently-labelled extracellular matrix, and the individual identification of each multicellular structure of the co-culture with a spatial positioning of those structures in microcavities, so as to individually and independently measure multiple biological activities in each multicellular structure of each type of tissue of the co-culture.

Provided herein are modified gelatins, cross-linked modified gelatins and hydrogels, and processes for making the same. Also provided herein is the use of such materials as matrices for cell growth.

The present invention relates to a method for culturing skin-derived stem cells and uses thereof, and to a method for culturing skin-derived stem cells; skin-derived stem cells produced by the method; a pharmaceutical composition for skin regeneration or wound treatment comprising the skin-derived stem cells produced by the method, a culture thereof, or cells differentiated from the skin-derived stem cells as an active ingredient; a quasi-drug composition; and a cosmetic composition. According to the culture method of the present invention, stem cells can be effectively isolated and obtained from skin tissue. The obtained skin-derived stem cells have excellent pluripotency and self-renewal ability, and have excellent skin regeneration and wound treatment effects, and can therefore be usefully used for skin regeneration and wound treatment or improvement applications.

The present invention relates to a method for culturing hair follicle-derived stem cells and uses thereof, and to a method for culturing hair follicle-derived stem cells; hair follicle-derived stem cells produced by the method; a pharmaceutical composition for treating hair loss or promoting hair growth, comprising the hair follicle-derived stem cells produced by the method, a culture thereof, or cells differentiated from the hair follicle-derived stem cells as active ingredients; a quasi-drug composition; and a cosmetic composition. According to the culture method of the present invention, stem cells can be effectively isolated and obtained from hair follicle tissue. The obtained hair follicle-derived stem cells have excellent pluripotency and self-renewal ability, and are effective in treating hair loss and promoting hair growth, and therefore can be usefully used for improving, preventing or treating hair loss.

The present disclosure provides, inter alia, a bilayer semipermeable fibrosis-resistant hydrogel polymer enclosure optionally containing cells such as mammalian cells, the enclosure being suitable for administration to a subject in need thereof, and further, the enclosure being expandable in accordance with a large number of delivered cells. The present disclosure further provides methods of making and using the enclosure, for example, in a treatment method, for example, in the treatment of disorders of the liver or other cells and organs treatable with secreting cells and / or catalytic cells.

An implantable therapeutic delivery device comprising a porous pouch and a cell encapsulation device configured to be housed in the porous pouch. The porous pouch can comprise a bioabsorbable material and / or a vascularization promoter, and the porous pouch can be packaged separately from the cell encapsulation device.

This application provides a cell encapsulation stromal material and its manufacturing method and application. The material is prepared by cutting, low-temperature microparticulation grinding, enzymatic decomposition, cell component removal, virus inactivation, freeze-drying and radiation sterilization using cartilage from mammals such as pigs, cows, sheep, horses and deer. The method is not for diagnostic purposes, and the stromal material is used for 3D bioprinting alone or with encapsulated cells. The main components of the material are type II collagen, chondroitin sulfate and hyaluronic acid, and have the advantages of no crosslinking toxicity, low immunogenicity, good biocompatibility and can be used for human implantation. In terms of structure, it has a good surface topology structure, provides a tissue microenvironment similar to that in the body for in vitro cell culture, and can be used as a microcarrier for cell culture, as well as promote the formation of cell mass, and can encapsulate cells in the gel-state stromal during the process of cell storage and transportation, protect cells from the effects of adverse environments and improve the viability of cells.

The invention discloses a method for large-scale cryopreservation of animal cells. The method comprises the following steps: carrying out first-stage amplification on to-be-preserved cells under the support of matrigel; performing second-stage amplification on the to-be-preserved cells subjected to the first-stage amplification under the support of a microcarrier; mixing the to-be-preserved cells with a serum-free cryopreservation solution to prepare a micro-capsule suspension; and putting the microcapsule suspension into a cryopreservation container to carry out cryopreservation. According to the invention, through amplification of two stages, the to-be-preserved cells have reached a high density of 109 orders of magnitude before cryopreservation, a re-amplification link in a cell recovery stage can be greatly shortened, and the to-be-preserved cells are subjected to microencapsulation through the micro-fluidic chip and then cryopreserved, so that physical protection is given to the to-be-preserved cells; the damage of ice crystals in the cryopreservation process is reduced, the survival rate after resuscitation is improved, and the microencapsulated cells can also be directly subcultured, so that the resuscitation operation is simplified; according to the cell cryopreservation device, the cryopreservation container with a large volume is used, so that the cost of cell cryopreservation is reduced.

The present invention provides a method of high-density cell culture comprising at least the following steps: S1: obtain hydrogel microcapsules through membrane emulsification; S2: encapsulate a selected number of cells per each obtained hydrogel microcapsule, and S3: culture the encapsulated cells in a cell culture medium. The invention further refers to Human Pluripotent Stem Cells (hPSCs) obtained through the above-described method, in particular for use in medicine, more in particular for use in a method of in vitro generation of mature megakaryocytes.

Approaches for the gentle formation of microcapsule populations are disclosed. Encapsulation is effected while reducing or eliminating negative impacts of hydrogel crosslinking in microcapsule contents, and using hydrogel reagents that may allow release of contents under physiological conditions. Also disclosed are the resultant microcapsule populations, which harbor contents such as various cell populations at proportions that reflect their relative proportions prior to encapsulation, such that encapsulation does not differentially select for one or another cell population.

The present disclosure provides a method of encapsulating organoids, cells or spheroids, the method comprising: (i) Mixing solutions of alginate and gellan together with buffer solution to form a mixed solution; (ii) Sterile filtering the mixed solution of (i) to form a sterile filtered solution; (iii) Suspending the organoids, cells or spheroids in a protein matrix comprising extracellular matrix protein and mixing 1:1 with the sterile filtered solution of (ii) to form a liquid suspension; (iv) exposing the liquid suspension of (iii) to calcium ions to induce gelation. A kit comprising alginate, gellan gum, and a protein matrix; and a gel composition suitable for encapsulating organoids, cells or spheroids, the gel composition comprising about 0.1% to about 1% w / v alginate and about 0.001 to about 0.02% w / v gellan gum are also provided.

The present application relates to fibers having a diameter of 1 nm to 10,000 nm, of one or more biocompatible polymers, wherein the polymers have a backbone which includes a positively charged component from a zwitterionic moiety. Additionally, this application discloses an implantable therapeutic delivery system and its method of formation, comprising a housing defining a chamber, wherein said housing is porous and formed from the fibers. Inside of the housing includes a preparation of cells which release a therapeutic agent from the chamber. The implantable therapeutic delivery system can be used in the treatment of diabetes.

This disclosure provides a method for expanding organoids, comprising the steps of: i) dissociating organoids into single cells and encapsulating the cells in gel beads; ii) culturing the encapsulated cells under static conditions in an incubator; iii) transferring the encapsulated cells to a fluidized bed bioreactor of a cell expansion device using a pump that provides a flow velocity of approximately 0.1 mm / s to approximately 5 mm / s in the bioreactor to form organoids; and iv) recovering the gel beads from the fluidized bed bioreactor for organoid collection.

The present disclosure provides methods of manufacturing cell-laden scaffolds comprising lipid-producing cells comprising confining lipid-producing precursor cells in a three-dimensional (3D) environment and culturing the lipid- producing precursor cells confined in the 3D environment in a food-grade differentiation medium to obtain the cell-laden scaffold comprising lipid-producing cells. In one embodiment, the 3D environment is formed by a mixture comprising lipid-producing precursor cells and a food-grade polymericsolution, wherein the food-grade polymeric solution comprises one or more selected from the group consisting of alginate, gelatin, pectin, agarose, carrageenan, gellan gum, konjac glucomannan, cellulose, etc. and combinations thereof, the lipid-producing precursor cells are selected from the group consisting of adipose-derived stem cells, preadipocytes mesenchymal stem cells, embryonic stem cells, induced- pluripotent stem cells and combinations thereof, the lipid-producing cells are selected from adipocytes, hepatocytes, sebocytes, mammary epithelia cells, keratinocytes and combinations thereof, and the food-grade differentiation medium comprises a fatty acid.

A stromal material for encapsulating cells, a preparation method therefor, and an application thereof. The material is prepared from the cartilage of mammals such as pigs, cows, sheep, horses, and deer by means of cutting, low-temperature micronization grinding, enzymolysis treatment, cell component removal, virus inactivation, freeze-drying, and irradiation sterilization treatment. The method is used for a non-diagnostic purpose; the stromal material can be used for 3D biological printing independently or together with encapsulated cells; the main components of the material are type II collagen, chondroitin sulfate, and hyaluronic acid; the material is free of cross-linking agent toxicity, has the advantages of being low in immunogenicity, good in biocompatibility, and capable of being implanted into a human body, has a good surface topological structure in structure, provides an in vivo-like tissue microenvironment for in-vitro cell culture, and not only can be used as a microcarrier for cell culture, but also can promote the formation of cell clusters; and in the cell preservation and transportation process, the cells are encapsulated in a gel-state stroma, such that the cells can be protected from the influence of a bad environment, improving the cell viability.

Methods and apparatus for acoustically assisted droplet generation with or without cell encapsulation.

The present disclosure concerns genetic modification of fibroblasts or fibroblast-derived materials (including of the fibroblasts from which the fibroblast-derived materials are derived). In specific aspects, they are modified such that they may express one or more surface markers that allow targeting to a tissue and / or organ of interest. In some aspects, they are modified such that they may lose one or more surface markers that then allow targeting to a tissue and / or organ of interest. In certain aspects, one or more surface markers are modified that then allows targeting to a tissue and / or organ of interest.

Methods of generating organoids on multi-well plates are provided by depositing a polymeric solution comprising cells under conditions which result in a homogenous population of organoids, which can be used for high throughput analysis for drug screening and for determining treatment regimens of a drug.

The present disclosure provides thymic cells, thymic organoids, and animal models comprising such thymic cells and thymic organoids. The present disclosure also provides methods for inducing, in vitro and in vivo, differentiation of pluripotent stem cells into definitive endoderm (DE), anterior and anterior intestinal endoderm (AFE), ventral pharyngeal endoderm (VPE), thymic epithelial progenitor (TEP) cells, thymic epithelial cells (TEC), and thymic organoid.