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我做rat的,小鼠的没做过,不知道我的protocol有参考价值没,感觉MSC是最好培养的了,比什么osteoblast和osteoclast好养多了7 e4 l ]! Q; o
8 X' t9 m7 s1 |# UMSC Isolation from Rat Femur and Tibia4 H( ]3 `) j$ C
1. Euthanize the rats with CO2 for 5 mins.
9 s& Y/ ^, ^/ ]2. Isolate femur and tibia by disconnecting them at the joints. x3 S& J4 c- T7 e( j1 _2 ^9 ^
3. Clean the bones of soft tissues.& |/ n, n& @; l* b! [& s G/ C
4. Wash both femur and tibia in PBS containing 1% penicillin/streptomycin twice.
- c6 r6 |2 K2 Q+ B) c! Q3 C5. Under the cell culture hood, clip-off the epiphyseal plates to expose the bone marrow.
& Y/ X, _1 y! W4 l( N3 \6. Using a syringe, flush the bone marrow with 10 ml of media into a dish.5 d/ a$ ~) J2 r1 m* w
7. Break up the clumps by aspirating the cell solution multiple times.
% E( A( n1 c" j+ s. S3 t8. Using a 70μm cell strainer, filter the cell solution into 15ml tube. This will remove any unwanted debris and bone fragments.) M) Q1 B& g: j' ]
9. Centrifuge the filtered cell solution at 1000rpm for 10 min.2 C0 k% k! ~7 T) U V7 [1 \- S
10. Resuspend the pellet and pipet this solution into a 100mm dish.% X1 M$ w* z! Y! f
11. Incubate for the next 48h.
. `9 l+ K8 U, X) ^) ^* O7 L12. Change media to remove non-adhering cells.
7 V2 O" B: D: i8 ~ I2 \# s2 v13. Change media every 2-3 days, even the media doesn’t change the color.
+ }# a4 J3 _- ?; _' O14. Usually the cell will be confluence at 7-10 days, and then are ready for passaging.; M' F" h) h& R9 R. ?' T8 o/ X( {
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