摘要:
An anterior ocular segment related cell sheet or three-dimensional structure that have only a few structural defects as they have been recovered retaining the intercellular desmosome structure and the basement membrane-like protein between cell and substrate. The anterior ocular segment related cell sheet or three-dimensional structure is produced by a process comprising the steps of cultivating cells on a cell culture support comprising a substrate having its surface covered with a temperature responsive polymer having an upper or lower critical dissolution temperature of 0-80° C. with respect to water, optionally stratifying the layer of cultured cells by the usual method, and thereafter, (1) adjusting the temperature of the culture solution to either above the upper critical dissolution temperature or below the lower critical dissolution temperature, and further optionally (2) bringing the cultured anterior ocular segment related cell sheet or three-dimensional structure into close contact with a polymer membrane, and (3) detaching the sheet or three-dimensional structure together with the polymer membrane.
摘要:
The purpose of the present invention is to obtain an alternative to a substitute of the mucosa in the middle ear which is engrafted on the surface of the bone in the middle ear, hyperplasia of the granulation tissue and the bone and the development of the fibroblast cell sir the middle ear are suppressed, and to obtain a middle ear mucosa-like cell sheet retaining cilia in the surface layer, comprising culturing nasal epithelium cells on a cell culture substrate coated with a polymer whose hydration force changes within a temperature range of 0 to 80 ° C., wherein the cells are cultured within a temperature range where the hydration force of the polymer is weak, and then changing the temperature to a temperature at which the hydration force is strong to recover the cultured cell sheet.
摘要:
This invention provides a cell pattern recovery tool comprising a base material layer having a surface subjected to easy adhesion treatment, a temperature responsive polymer layer that is provided on the base material layer and has a surface subjected to silane treatment, and a cell adhesion inhibiting material layer provided on the temperature responsive polymer layer. According to the present invention, a cell pattern can be rapidly recovered while maintaining the cell pattern stably and reliably under minimally invasive conditions for the cells.
摘要:
A cell culture support is first prepared that is coated on a surface with a polymer the hydration force of which changes in a temperature range of 0-80° C.; cancer cells are then cultivated on the support in a temperature region where the polymer has weak hydration force; thereafter, the culture solution is adjusted to a temperature at which the polymer has a stronger hydration force, whereby the cultured cancer cells are detached; the detached cancer cells are then transplanted to a specified site of an animal on which transplantation is to be performed; this method is an efficient way of cancer cells transplantation.
摘要:
An object of the present invention is to provide a cell culture substrate capable of quickly forming a cell sheet and easily removing the cell sheet after formed. The present invention relates to a cell culture substrate for forming a cell sheet by culturing cells, comprising a plurality of projections each having a top face and depressions formed between the projections, in which the depressions each have an opening whose dimensions are too small for a cell to be cultured to enter and the cell sheet is removable. The present invention further relates to a method of preparing a cell sheet using the substrate and a cell sheet prepared by the method.
摘要:
Methods and reagents are described for myocardial regenerative therapy using cardiomyocytes that are cultured ex vivo to have a controlled orientation of beating. This is achieved by growing the cardiomyocytes on a culture support that is coated with a polymerizable liquid crystal which is oriented so as to be in a liquid crystal phase state prior to curing with ionizing radiation or ultraviolet rays.
摘要:
It is intended to provide a cultured cell sheet with excellent tissue adherence and flexibility. The above object can be achieved by culturing cells on a support for cell culture in which a surface of a substrate is coated with a temperature-responsive polymer whose lower or upper critical solution temperature against water is in the range of 0 and 80° C. along with a surfactant protein or a crosslinking inhibitor and producing a cultured cell sheet by detaching it by setting the temperature of the culture to the upper critical solution temperature or higher or to the lower critical solution temperature or lower.
摘要:
A cultured periodontal ligament cell sheet is produced by a process comprising culturing cells on a cell culture support composed of a base material whose surface is coated with a temperature-responsive polymer having an upper limit or lower limit critical dissolution temperature in water of 0 to 80° C. under specified conditions, (1) regulating the temperature of a culture fluid to the upper limit critical dissolution temperature or higher or to the lower limit critical temperature or lower, (2) allowing a cultured periodontal ligament cell sheet resulting from the culturing to adhere to a carrier and (3) detaching the sheet intact together with the carrier. This cultured periodontal ligament cell sheet has a syndesmotic microstructure, exhibits extremely high bioadherence to the dental root surface and realizes high density transplantation of target cells and positive reconstruction of periodontal tissues. Moreover, through lamination of cell sheets to be transplanted and donation of a three-dimensional polarity, highly efficient reconstruction of an adhesion apparatus can be accomplished and clinical application thereof to moderate periodontitis, severe peridontitis, gingival recession and the like is highly promising.
摘要:
A polymer that changes hydration at a temperature between 0 to 80° C. is coated on the surface of a cell culture support, and islet cells are cultured on the support at a temperature range that causes polymer to have weak hydration, then the temperature of a culture solution is changed to a temperature that causes the polymer to have strong hydration to obtain islet cells in a sheet form. Such islet cells in a sheet form have an insulin producing function even if there is no blood flow.
摘要:
This invention provides a cell pattern recovery tool comprising a base material layer having a surface subjected to easy adhesion treatment, a temperature responsive polymer layer that is provided on the base material layer and has a surface subjected to silane treatment, and a cell adhesion inhibiting material layer provided on the temperature responsive polymer layer. According to the present invention, a cell pattern can be rapidly recovered while maintaining the cell pattern stably and reliably under minimally invasive conditions for the cells.