Abstract:
The present invention relates to a method for evaluating toxicity of nanoparticles, and more particularly, to a method for evaluating toxicity of nanoparticles comprising the steps of: obtaining a sample of tissues or cells of a mammal exposed to nanoparticles; irradiating at least one selected from a group consisting of a glutamic acid content, a pyruvate content, whether mitochondria within a cell is damages or not, a reactive oxygen species (ROS) content and an ATP content within the sample; comparing with a control group. The method for evaluating toxicity of nanoparticles according to the present invention analyzes factors having high a correlation with the toxicity of nanoparticles. By using this, it is possible to more precisely detect the toxicity of nanoparticles with excellent detection sensitivity, and through this, it can be effectively used in monitoring or evaluating harmfulness of the toxicity of nanoparticles, as well as effectively used as a tool for examining various diseases, the effects on health or the like when exposed to nanoparticles.
Abstract:
PURPOSE: A cell culture substrate of a fine structure is provided to control the growth and differentiation of a cell, and to overcome a dedifferentiation phenomenon of chondrocyte cultivation through a special structure design of the culture substrate. CONSTITUTION: A cell culture substrate comprises a thin film in which fine particles are arranged. The surface characteristics of the cell culture substrate obtained with the arrangement of the spherical fine particles satisfy the following: surface roughness(Rq)
Abstract:
줄기세포를 배양하는 지지체가 개시된다. 본 발명에 따른 망상구조체 탄소나노튜브 박막을 지지체로 사용하여 줄기세포를 성장 및 분화시키는 방법과 탄소나노튜브의 막 두께와 표면 거칠기를 조절하여 줄기세포의 성장 및 분화를 조절하고, 막 두께와 표면 거칠기를 조절하여 성장 및 분화시키는 줄기세포의 개체수를 조절하고, 상기 요소들을 포함하는 배양 지지체에 관한 것이다. 탄소나노튜브, 중간엽 줄기세포, 랭뮤어-블로젯 방법
Abstract:
PURPOSE: A method for forming patterns using a carbon nano-tube langmuir-blodgett(LB) thin film and the growth and differentiation control of stem cells using the same are provided to pattern the carbon nano-tube LB thin film on a substrate using a micro-contact printing method or a lift-off method. CONSTITUTION: A method for forming patterns using a carbon nano-tube LB thin film includes the following: A carbon nano-tube LB thin film is patterned on a substrate using a micro-contact printing method or a lift-off method. The micro-contact printing method transfers the carbon nano-tube LB thin film to a patterned mold. The transferred thin film is in contact with a substrate in order to transfer the patterned thin film to the substrate. The lift-off method transfers entire carbon nano-tube LB thin film to the substrate and to a patterned mold. The transferred thin film is lifted off from the substrate. Stem cells are cultivated on the patterns of the substrate.
Abstract:
본 발명은 나노입자의 독성 평가방법에 관한 것으로, 보다 구체적으로 나노입자에 노출된 포유동물의 조직 또는 세포 샘플을 얻는 단계; 상기 샘플 내에서 글루탐산 함량, 피루베이트 함량, 세포 내 미토콘드리아 손상여부, ROS(활성산소종) 함량, 및 ATP 함량;으로 이루어진 군에서 선택된 어느 하나 이상을 조사하는 단계; 및 대조군과 비교하는 단계;를 포함하는 나노입자의 독성 평가방법에 관한 것이다. 본 발명에 따른 나노입자의 독성 평가방법은 나노입자의 독성과 높은 연관성을 갖는 인자를 분석함으로서, 이를 이용하면 나노입자의 독성 여부를 보다 정확하게 우수한 검출 감도로 확인할 수 있으며, 이를 통해 나노입자의 유해성을 모니터링 하거나 평가하는데 유용하게 사용될 수 있고, 나노입자에 노출시 유발되는 각종 질병이나 건강에 미치는 영향 등을 규명하는 도구로 유용하게 이용될 수 있다.
Abstract:
본 발명의 세포배양 기판은, 3차원적 세포 배양 환경을 효과적으로 제공하기 위해 중요하게 고려되어야 할 몇 가지 관점을 만족시키는 미세구조를 갖는다. 이러한 미세구조는 꽃 유사 형상의 3차원 미소 펠렛 형태로 세포 배양 및 응집이 일어나며, 세포 배양시 탈분화를 억제하고 재분화를 촉진하고, 세포 골격 구조의 발달을 억제하며, 세포의 유동성 및 이동성을 증가시킨다.
Abstract:
PURPOSE: A cell culture substrate is provided to suppress development of a cytoskeleton structure and dedifferentiation during cell culture and to promote redifferentiation. CONSTITUTION: A cell culture substrate has a thin film on which microparticles are arranged. A three-dimensional micropellet is formed while cells are cultured. The three-dimensional micropellet has a flower shape with a core and petal patterns around the core. The core is formed by aggregation of cells in a three-dimensional form. The cell culture substrate has low cell culture rate and high redifferentiation rate.
Abstract:
PURPOSE: A support for culturing stem cells is provided to control stem cell growth form and speed and to differentiate special cells. CONSTITUTION: A method for controlling proliferation and differentiation of stem cell comprises a step of controlling network structure CNT membrane thickness and surface roughness of CNT membrane using more than 0.5 ml of carbon nanotube solution dispersed in an organic solvent. The stem cell is mesenchymal stem cells(3).