312results about "Respiratory/lung cells" patented technology

A method for studying scaffold-based tissue engineering approaches in combination with the use of progenitor or stem cells to generate new lung tissue in an in vitro system. The engineered tissue system of this invention is used to monitor lung and immune system exposure of pathogen and/or toxins. The method involves growing engineered lung/immune tissue from progenitor cells in a bioreactor and then exposing the engineered lung/immune tissue to a pathogen and/or toxin. Once exposed, response of the engineered tissue is monitored to determine the effects of exposure to the immune component of the tissue and to lung component of the tissue. This invention also involves development of mixed engineered tissues including a first fully functional engineered tissue such as lung tissue and a second fully functional engineered tissued such as immune tissue from a single animal donor. The mixed systems can include more than two engineered tissues.

Culture media and methods for expanding and differentiating populations of stem cells and for obtaining organoids. Expanded cell populations and organoids obtainable by methods of the invention and their use in drug screening, toxicity assays and regenerative medicine.

The invention discloses a method for culturing normal human lung tissue and a lung cancer tissue organoid in an in-vitro manner. The method includes: acquiring fresh human-derived lung tissue cells, and performing collagen digestion on the fresh human-derived lung tissue cells to obtain single cells; culturing human lung tissue and the lung cancer tissue organoid under in-vitro 3D culture conditions; performing H&E staining to determining the structure and form, and using q-PCR to detect related gene expression; using immunofluorescent staining to authenticate cell sources and detect related protein expression. The invention further discloses a method for building a mouse animal model based on the organoid. The method for culturing the normal human lung tissue and the lung cancer tissue organoid and the method for building the mouse animal model have the advantages that the methods are significant to the building of large-scale and good-consistency human-derived in-situ lung cancer animal models, and a good basis and related application prospect are provided for the fundamental researches of lung cancer.

By using a bed material for cell culture having a surface composed of two domains of domain A coated with a temperature-responsive polymer and domain B composed of any one or a combination of a domain coated with a polymer having high affinity with cells, a domain coated with the temperature-responsive polymer in an amount different from the amount of the temperature-responsive polymer of domain A, and a domain coated with a polymer which responds to a temperature different from the temperature to which domain A responds, a method for the co-culture of a plurality of kinds of cells which has heretofore been difficult becomes possible.

The present invention relates to compositions comprising a decellularized tissue. The present invention also provides an engineered three dimensional lung tissue exhibiting characteristics of a natural lung tissue. The engineered tissue is useful for the study of lung developmental biology and pathology as well as drug discovery.

The present invention discloses a system and a method including a body having a central microchannel separated by one or more porous membranes. The membranes are configured to divide the central microchannel into a two or more parallel central microchannels, wherein one or more first fluids are applied through the first central microchannel and one or more second fluids are applied through the second or more central microchannels. The surfaces of each porous membrane can be coated with cell adhesive molecules to support the attachment of cells and promote their organization into tissues on the upper and lower surface of the membrane. The pores may be large enough to only permit exchange of gases and small chemicals, or to permit migration and transchannel passage of large proteins and whole living cells. Fluid pressure, flow and channel geometry also may be varied to apply a desired mechanical force to one or both tissue layers.

Isolated mixed populations of fetal pulmonary cells, engineered three-dimensional tissue constructs of these cells, and uses thereof in identifying therapeutic agents which augment, repair, and/or replace dysfunctional native lung and to perform in vitro studies such as pharmaceutical screening, models for lung development and disease and characterization of chemical or mechanical injury are provided.

The present invention provides for an engineered three dimensional (3D) pulmonary model tissue culture which is free of any artificial scaffold.

Somatic lung progenitor cell/polymer constructs are disclosed along with methods for isolating somatic lung progenitor cells from adult mammals, seeding the cells onto or into polymeric scaffolds and allowing the cells to differentiate and proliferate into functional lung tissue/polymer implants. A method for treating lung disease, disorders or injuries is also disclosed.

The present invention generally relates to the field of diagnostic microbiology, and, more particularly, to compositions and methods for detecting and differentiating one or more viruses or other intracellular parasites present in a specimen. The present invention also provides compositions and methods to evaluate the susceptibility of a organisms to antimicrobial agents.

The present invention generally relates to the field of diagnostic microbiology, and, more particularly, to compositions and methods for detecting and differentiating one or more viruses or other intracellular parasites present in a specimen. The present invention also provides compositions and methods to evaluate the susceptibility of a organisms to antimicrobial agents.

The present invention comprises artificial tissue constructs that serve as in vitro models of mammalian lung tissue. The artificial tissue constructs of the present invention comprise functionally equivalent in vitro tissue scaffolds that enable immunophysiological function of the lung. The constructs can serve as novel platforms for the study of lung diseases (e.g., interstitial lung diseases, fibrosis, influenza, RSV) as well as smoke- and smoking-related diseases. The artificial tissue constructs of the present invention comprise the two components of alveolar tissue, epithelial and endothelial cell layers.

Methods of generating, and isolating adult stem cells and utilizing such cells and/or embryonic stem cells in generating tissue of a specific function and micro-architecture are provided.

A carrier for cell culture comprising an alginic acid gel layer laminated with a gel layer containing a cell adhesion substance, wherein the gel layer containing a cell adhesion substance has a dry thickness of less than 0.3 mum. The carrier for cell culture enables reproducible and convenient cell layer lamination without inhibiting growth and proliferation of cells upon solubilization of the carrier for preparation of a cell sheet.

The present invention relates to methods of improving function in lung tissue by administering a population of multipotent adult progenitor cells (“MAPCs”) or differentiated progeny thereof.

A microfluidic continuous flow device comprising a channel which comprises a first and a second area wherein the first area of the channel is a compartment which is defined by partitioning elements and the second area of the channel is a space outside the compartment; wherein through passages which are formed between the partitioning elements are dimensioned such as to retain a biological material and optionally a sustained release composition which can be comprised in the compartment within the compartment; wherein the channel has a first inlet to the compartment through which biological material can be introduced into the compartment; a second inlet for introducing a cultivation medium into a space of the channel arranged outside of the compartment, and an outlet. The present invention further refers to methods of using the devices of the present invention and kits comprising the microfluidic continuous flow devices of the present invention.

The present invention provides methods and compositions related to the generation of host cells permissive for virus growth, particularly Porcine Reproductive and Respiratory Syndrome (PRRS) virus.

The invention discloses an in-vitro individualized medicine test method for lung cancer and a culture medium, and belongs to the field of cell biology and pharmacology. The in-vitro individualized medicine test method and the culture medium have the advantages that the culture medium M can be applied to normal epithelial cells and primary tumor cells of human or mammals, accordingly, in-vitro culture systems for tumor cells and para-carcinoma cells of lung cancer patients can be established, and primary cells, with continuous passage and quick proliferation functions, of patient individuals can be obtained; the culture systems can be used for detecting the sensitivity and the safety of medicines or combination groups of the medicines, and accordingly stable, accurate and reliable lung cancer individualized treatment-medicine sensitivity test standard detection process systems can be established; individualized sensitive chemotherapy medicines or compositions screened by the aid of the lung cancer individualized treatment-medicine sensitivity test standard detection process systems can be combined with clinical medicine or relevant subjects, accordingly, clinical individualized treatment schemes can be formulated, and the in-vitro individualized medicine test method and the culture medium can ultimately serve for clinical application.

The invention discloses a culture medium for 3D culture of lung tissue. The culture medium comprises the following components: B27, N-acetylcysteine, an EGF, Noggin, R-spondin 1, A83-01, FGF10, Nicotinamide, Y-27632*, WNT3a, Glutamax, N2 and Gastin. The culture medium disclosed by the invention is appropriate in nutrient component, tissue cell specificity and stem cell specificity can be effectively maintained for lung tissue and lung cancer tissue, then lung tissue/lung cancer tissue organs with stable inheritance and biological functions can be formed, and scientific study requirements can be met.

Embodiments of the invention relate to human stem cells and their therapeutic use in the treatment and/or prevention of lung diseases. Provided herein are compositions comprising c-kit positive human lung stem cells and methods of preparing and using c-kit positive human lung stem cells for the treatment and/or prevention of lung diseases.

The present invention provides a process of producing a decellularized extracellular matrix DC lung from native lung tissue using rapid freeze/thaw cycling to induce cellular damage and the constant circulation of a detergent or peracetic acid and enzymatic digestion with DNAase/RNAase within a continuously rotating bioreactor. Also, provided are methods to produce a functional engineered lung tissue on the DC lung using endogenous lung progenitor cells. In addition, a composition comprising the DC lung and the endogenous lung progenitor cells seeded therein or thereon and an implantable composition comprising the functional engineered lung tissue which are useful in methods of treating a lung to restore at least some function thereto.

The invention puts forward a universal cancer organoid in-vitro culture medium, which consists of a DMEM/F-12K (Dulbecco's Modified Eagle Medium/Nutrient Mixture F-12K) basic culture medium and an adding factor, wherein the adding factor consists of HEPES (2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid), L-Glutamine, EGF (epidermal growth factor), Noggin, FGF (fibroblast growth factor)-10, A83-01 and Y27632. According to the culture medium of the embodiment of the invention, the success rate of organoid passage culture can be greatly improved, in addition, the universal culture of cancer samples, including gastric carcinoma, rectal carcinoma, lung carcinoma and the like, can be realized, culture cost is greatly lowered, the long-term culture of the organoid can be realized, and abiobank is established.