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Isolation of endothelial cells, smooth muscle cells and fibroblasts.
The protocol is described briefly.
Requirements:
Endothelial Cell Medium : DMEM 500ml +50 ml FCS +5 ml P/S+ Supplement Pack without Amphotericin and Gentamycin.
Smooth Muscle Cell Medium with supplementary Packet
Dulbecco's Modification of Eagle's Medium (DMEM),
Stop medium : M 199+ 100 Ml FCS +5 ml PS
DMEM with 10 % FCS was used instead of Stop medium
Procedure
1. Preparation of T Flask coated with Gelatin
0.1 % Gelatin Sigma (G-2500) was prepared by dissolving gelatin in Sterile Deionised Water.
2. Preparation of Collagenase A :
0.01 g of Collagenase A ( Roche, Cat No: 103578) was taken and dissolved in 10 ml PBS and was passed through a sterile filter.
A.Isolation of Endothelial Cell :
An artery was taken and washed thoroughly outside and inside with PBS. The artery was then clamped with Arterial Clamps. Collagenase was injected in the artery with a thin needled syringe till the artery was totally filled. The artery was incubated in PBS at 37° C for 30 minutes. The artery was taken out and the arterial clamps was removed and the fluid from the lumen was collected in a tube, which was then filled with 5 ml Stop Medium. The tube was centrifuged at 1200 rpm for 10 minutes to sediment the cells from the lumen. The supernatant liquid was removed and the cell pellet was resuspended in a 25 ml culture flask previously coated with gelatin. 10 ml EC media was pipetted in the flask to support the growth of the Cell. The Flask was incubated at 37 °C.作者: milkdog 时间: 2011-12-10 15:14
B.Isolation of Fibroblast
After the fluid from the lumen was taken out from the incubated artery, the adventitia of the artery was pulled out and minced into small pieces in a petridish (6cm) and 6 welled culture vessel and left it for drying. DMEM was added in the petridish and 6 welled culture vessel and incubated at 37 C
C.Isolation of SMC
The artery was cut longitudinally to make the vessel flat like structure and the inner layer was cut into small pieces. The small pieces were put into petridish and 6 welled plates and left it for drying. SMC media was put into the dish or plate and incubated at 37°C in the incubator.
Observation
An area was marked in the culture dishes and observed carefully under the microscope. The following pictures are taken at a particular site from the expected endothelial cell culture.
After 5 days of culture After 6 days of culture
After 7 days of culture After 8 days of culture.
The idea
As the culture could be mixture of different cell types. It would be necessary to separate different cell type. This can be achieved by
1.Magnetic Bead Method
2.Single cell isolation Method.
For the Single cell isolation Using Micromanipulator.
The idea is to select a particular cell from the early colony which contains very less number of cell and where no or only single cell was seen earlier.
Proposed Procedure:
An ideal area is to be choosen and to be trypsinised with Trypsin-EDTA under the miscroscope with a micropipette (Standard Protocol). As the cell detach from the surface of the culture disc, a single cell is to be aspirated with a micropipetted and to be put in an appropiate media. The flask is to be incubated. Change of media is to be done every 24 hours till confluency. The cell type is to be determined with immnocytochemistry.
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