Abstract:
A stamp for cell dissociation, a method for cell dissociation by using the same stamp, and an apparatus for manual/automatic cell dissociation by using the same stamp are provided to dissociate the human and animal cells into the cell units having a certain cell number at one time and divide them into a certain pattern according to a purpose. The stamp(100) for dissociation of human and animal cells comprises a body(110) having an upper side and a lower side, and a micro-pattern portion(120) which is located at any one of the upper and lower sides, and has at least one repeated micro-pattern(130) with a certain height and width, wherein the micro-pattern portion is made of polydimethylsiloxane(PDMS), polymethylmethacrylate(PMMA), polyacrylates, polycarbonates, polycyclic olefins, polyimides, polyurethanes or polyester. The method for cell dissociation comprises the steps of: (a) preparing cell population in a culture dish; (b) placing the stamp on the culture dish in parallel; (c) pressing the culture dish with the stamp for a certain time to dissociate the cell population; and (d) removing the stamp.
Abstract:
PURPOSE: A fertilized egg introduced by an expression cassette containing a human granulocyte-colony stimulating factor (hG-CSF) under a Gapra hircus aegagrus β-casein promoter, Gapra hircus aegagrus generated from the fertilized egg and a process for producing the hG-CSF are provided. Therefore, the hG-CSF can be used for prevention and treatment of a disease such as bone marrow transfusion, malignant lymphoid tumor, acute leukemia, lung cancer, ovarian cancer, anemia or the like. CONSTITUTION: The fertilized egg(KCTC-0718BP) is prepared by microinjection of pGbc-hGCSF as an expression cassette containing a human granulocyte-colony stimulating factor (hG-CSF) under a Gapra hircus aegagrus β-casein promoter to the male pronucleus of a fertilized egg of Gapra hircus aegagrus. Also the Gapra hircus aegagrus is prepared by transplanting the fertilized egg to an oviduct of Gapra hircus aegagrus as a surrogate mother and generating.
Abstract:
본 발명은 인간 줄기세포 유래 간세포를 이용한 면역 간독성 스크리닝 방법에 관한 것으로, 인간 줄기세포로부터 분화된 간세포 및 인간 간세포에 에탄올, CCl 4 , 및 아세토아미노펜을 처리하여 간독성을 유발한 후, 상기 간세포가 분비하는 매개체 사이토카인, 케모카인 및 지질매개체를 확인하고자 분화 간세포의 면역독성물질 분석 시스템을 구축하였으며, 상기 시스템을 사용하여 간독성이 유발된 상기 세포에서 면역독성물질을 확인할 수 있음으로써, 상기 인간 줄기세포 유래 간세포를 이용하여 면역 간독성 스크리닝 방법으로 유용하게 사용될 수 있다.
Abstract:
The present invention relates to a induced pluripotent stem cell (iPSC) model of noonan syndrome, a method for producing the same, and a use of the iPSC model for research on the pathogenesis of the noonan syndrome and a method for screening a treating agent. In particular, the generation and differentiation of noonan syndrome-derived iPSCs, an embryoid body (EB), and neural rosettes have been induced from the fibroblasts of a noonan syndrome patient, and it has been confirmed that the noonan syndrome-derived iPSCs exhibit a normal iPSC shape and differentiating function. As a result of inducing natural differentiation and chemical differentiation to differentiate an EB and neural rosettes from noonan syndrome-derived iPSCs, the EB and neural rosettes differentiated through chemical differentiation exhibits a similar cell shape to normal cells. An ectoderm, a neural rosette, and a neural cell marker gene are significantly expressed, so that the cell model can be usefully used in research for analyzing the mechanism of the noonan syndrome and research for analyzing a method for screening a treating agent.
Abstract:
PURPOSE: A method for differentiating pluripotent stem cells into CD34-positive cells is provided to induce differentiation into vascular cells. CONSTITUTION: A composition for differentiating induced pluripotent stem cells contains MEK/ERK(mitogen-activated protein kinase kinase/extracellular regulated kinase) signal transduction inhibitor and BMP(bone morphogenetic protein). The MEK/ERK signal transduction inhibitor is PD98059 or U0126. The concentration of the MEK/ERK signal transduction inhibitor is 20-50 uM. The composition additionally contains VEGF(vascular endothelial cell growth factor) and bFG(basic fibroblast growth factor). A method for differentiating the induced pluripotent stem cells into CD34-positive cells comprises: a step of culturing the induced pluripotent stem cells under the presence of MEK/ERK signal transduction inhibitor and BMP to differentiate into mesoderm cells; and a step of culturing the mesoderm cells under the presence of VEGF and bFGF.