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FACS Analysis
C% ?# v; @# W( A7 s; [ C- S4 P1. 1. Harvest cell using 0.25% trypsin 2 m3 f H& O' Y6 h: k
2. 2. Resuspend in 1ml DMEM/F-12 media with Trypsin inhibitor 细胞浓度为1000000个/ml# C+ z: ^: @+ ?9 Q7 j
3. 3. Placed in a 1.5 ml micro centrifuge tube and spin down
5 p& G" y1 M: p' p8 w+ @: f" r4. 4. Wash with FACS buffer (1XPBS, 5% FBS, and 0.1% sodium azide) in ice / y7 N" c2 l( W
5. 5. Resuspend in 50-100 μl and incubate in ice or 4℃ for 30 min ~ 1 hour with appropriate antibody (1:20-1:40 dilution)
0 t5 F( Z8 u! e, @5 K) d6. 6. Wash three times with FACS buffer 个人经验是洗一篇,洗多了丢细胞& u/ w) t f; \5 ]$ C' d; H* T6 T- j
7. 7. Incubate with a flourescein-conjugated IgG secondary antibody(1:100) for 30 min.
9 j6 `1 q9 a A8. 8. Wash three times with FACS buffer 还是洗一遍 洗完加上FACS buffer 就可马上上机了' F k* y: q$ O9 D! |& c: O. E
9. 9. Add 0.5 ~ 1 ml of cold 1% Paraformaldehyde solution to the pellet. 这步是为了万一不能马上上机,长期保存用的,建议还是马上上的好
. O" E& u1 ^* T' r( m1 \$ v9 H10. 10. �Suspense cell immediately
! `# B e2 i3 v7 i$ r + A+ g5 m* z9 R" k
11. 11. �Store the fixed cells at 4℃ in the dark , T# @. q' T; A, f6 m
12. 12. �These cells may be stored for at least one week prior to FACS analysis + v( N& ^* w' e N9 _! K7 ]" x+ L4 j
IMPORTANT: Protect from direct light
/ O- K% Y% n5 E+ M7 l+ W' \FACS Buffer Preparation
- _' t, r* K( l+ q$ N5 a9 B0 D 5mL 10% BSA (0.1% BSA)
. E# a- j! z6 _, I& L1mL 10% Azide
( E: C. p" p0 a; |4 rSome people add 2-4-5 mL EDTA Antichelating agent (prevents clumping)7 s" I7 K! \/ j5 `, B9 R
Make up to 500mL with 1x PBS
4 G! b; W$ t* b2 v" w0 {. ? |
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