干细胞

人胚胎干细胞的单层内胚层分化

人胚胎干细胞的单层内胚层分化
血清条件下,activinA存在的胚胎干细胞分化,会生成一种共表达Brachyury,Foxa2和c-Kit或者c-Kit和Cxcr4的内胚层祖细胞群。这些含骨形态生成蛋白-4的祖细胞结合碱性成纤维生长因子(FGF-basic)和activinA会使肝细胞群生长,高度富集(45–70%)表达alpha-甲胎蛋白和白蛋白的细胞。

Protocol

1.准备ES细胞到matrigelplate,去除MEFs

►准备1:3matrigelplate:冰上预冷TC培养板和移液管,冰箱或者冰上解冻1:3matrigel。小心把matrigel包被在板子上且保证覆盖底部,然后吸出多余的matrigel(在包被matrigel过程中保持所有东西预冷)。把matrigelplates放在冰上30min。再次吸出多余的matrigel并把包被matrigel的板子37◦C孵育30min。

►37◦CTrypLE处理融合的ES细胞2-3min(10cmdish用4mlTrypLE或者6孔板的每孔1ml),然后吸出TrypLE。用washmedia(IMDM+Glu+P/S+0.1%BSA)洗2-3次。10cmdish加4mlhESmedia或者6孔板的每孔1ml,用细胞刮棒刮去板子底部的ES细胞。上下吹打3-5次,显微镜下观察直到可以得到5-10个细胞团。

►接种细胞到matrigel-coated板子上


2.设置T0:5%O2,5%CO2条件下,当有70-80%融合时,细胞会发生分化。用washmedia洗细胞2次并添加适量体积T0培养基(如10cmdish加10ml,6孔板的每孔2ml)


3.用washmedia洗细胞并且每天更换培养基直到T5。前几天看到大细胞死亡是正常现象。


4.进入肝分化,用Accutase37◦C3min分离T5细胞,washmedia洗细胞两次。6孔板的每孔加入1mlwashmedia并刮下细胞。收集T5细胞,1200rpm离心3min。用T5media重悬细胞并且以1:6接种细胞到matrigel-coated6孔板,250Kcells/well。


5.每2天用不同分化培养基接种细胞(如下),并在18-25天收集用于分析。

注:matrigel的每批内毒素水平和蛋白浓度都有差异,建议内毒素水平不高于2units/mL,蛋白水平应在7-10mg/mL之间。如果蛋白水平较高,可能要多于1:1稀释,这取决于hESC克隆形态和hESC分化为需要系别的能力。操作matrigel过程中,所有管子、培养板和移液器都必须是预冷的,matrigel室温下回凝固。

附:

1)hESMedia(500ml)

DMEM/F12:400ml

KOSR:100ml

NEAA:5ml

L-glutamine:5ml

Pen/strep:5ml

β-Mercaptoethanol:3.5ul

bFGF:10ng/ml(50ulof100ug/ml贮存)

L-AscorbicAcid:50ug/ml–每次培养基更换加新鲜的5mg/ml贮存液

2)分化培养基:

T0Media
BasicMedia
RPMI
Ingredient
Stock
Volume
Final
Glutamine
100x
10ul/ml
1x
MTG(MONOTHIOGLYCEROL)
13ul/ml
3ul/ml
4.5×10-4M
Chir99021
10mM
0.2ul/ml
2uM
ActivinA
100ug/ml
1ul/ml
100ng/ml
T1andT2MEDIA
BasicMedia
RPMI
Ingredient
Stock
Volume
Final
Glutamine
100x
10ul/ml
1x
MTG(MONOTHIOGLYCEROL)
13ul/ml
3ul/ml
4.5×10-4M
AscorbicAcid
5mg/ml
10ul/ml
50ug/ml
BMP4
10ug/ml
0.025ul/ml
0.25ng/ml
bFGF
10ug/ml
0.5ul/ml
5ng/ml
ActivinA
100ug/ml
1ul/ml
100ng/ml
VEGF
25ug/ml
0.4ul/ml
10ng/ml
T3andT4MEDIA
BasicMedia
SFD
Ingredient
Stock
Volume
Final
MTG(MONOTHIOGLYCEROL)
13ul/ml
3ul/ml
4.5×10-4M
AscorbicAcid
5mg/ml
10ul/ml
50ug/ml
BMP4
10ug/ml
0.025ul/ml
0.25ng/ml
bFGF
10ug/ml
0.5ul/ml
5ng/ml
ActivinA
100ug/ml
1ul/ml
100ng/ml
VEGF
25ug/ml
0.4ul/ml
10ng/ml
*SFD:1L
750ml:homemadeIMDM(Invitrogen12200-069)(1×10L)(+Glutamine,+25mMHEPES+P/S)
250ml:HamsF12
5ml:N2-supplement(Invitrogen17502-048)
10ml:B27supplementw/oretinoicacid(Invitrogen12587-010)
5ml:10%BSAinPBS


(3)肝分化培养基:

DET5andT6MEDIA
BasicMedia
SFD
Ingredient
Stock
Volume
Final
Glutamine
100x
10ul/ml
1x
MTG(MONOTHIOGLYCEROL)
13ul/ml
3ul/ml
4.5×10-4M
AscorbicAcid
5mg/ml
10ul/ml
50ug/ml
BMP4
10ug/ml
1ul/ml
10ng/ml
bFGF
10ug/ml
0.5ul/ml
5ng/ml
ActivinA
100ug/ml
0.5ul/ml
50ng/ml
VEGF
10ug/ml
1ul/ml
10ng/ml
DET7-T12MEDIA
BasicMedia
SFD
Ingredient
Stock
Volume
Final
Glutamine
100x
10ul/ml
1x
MTG(MONOTHIOGLYCEROL)
13ul/ml
3ul/ml
4.5×10-4M
AscorbicAcid
5mg/ml
10ul/ml
50ug/ml
BMP4
100ug/ml
0.5ul/ml
50ng/ml
bFGF
100ug/ml
0.1ul/ml
10ng/ml
VEGF
25ug/ml
0.4ul/ml
10ng/ml
EGF
50ug/ml
0.2ul/ml
10ng/ml
TGFα
50ug/ml
0.4ul/ml
20ng/ml
HGF
100ug/ml
1ul/ml
100ng/ml
DEX
50uM
2ul/ml
100nM
T13-T18
BasicMedia
SFD
Ingredient
Stock
Volume
Final
MTG(MONOTHIOGLYCEROL)
13ul/ml
3ul/ml
4.5×10-4M
AscorbicAcid
5mg/ml
10ul/ml
50ug/ml
bFGF
100ug/ml
0.1ul/ml
10ng/ml
VEGF
25ug/ml
0.4ul/ml
10ng/ml
EGF
50ug/ml
0.2ul/ml
10ng/ml
HGF
100ug/ml
1ul/ml
100ng/ml
OSM
100ug/ml
0.2ul/ml
20ng/ml
DEX
50uM
4ul/ml
200nM
VK(VitaminK)
10mg/ml
0.6ul/ml
6ug/ml
DMSO
dry
10ul/ml
1%
gSI(γ-SecretaseInhibitor)
1mM
1.5ul/ml
1.5uM
LiverT19-T25
BasicMedia
SFD
Ingredient
Stock
Volume
Final
MTG(MONOTHIOGLYCEROL)
13ul/ml
3ul/ml
4.5×10-4M
AscorbicAcid
5mg/ml
10ul/ml
50ug/ml
HGF
100ug/ml
1ul/ml
100ng/ml
OSM
100ug/ml
0.2ul/ml
20ng/ml
DEX
50uM
2ul/ml
100nM
VK(VitaminK)
10mg/ml
0.6ul/ml
6ug/ml

以上内容摘自StemBook-protocols

主要产品介绍:

cytokines
Supplier/Catalog#
StockConc.
hBMP-4
PeproTech#120-05/120-05ET/AF-120-05ET
10ug/mL
hbFGF
PeproTech#100-18B/AF-100-18B/100-18C/AF-100-18C
10ug/mL
hVEGF
PeproTech#100-20/AF-100-20
5ug/mL
ActivinA
PeproTech#120-14/AF-120-14/120-14E/AF-120-14E/120-14P
10ug/mL
EGF
PeproTech#AF-100-15
100ug/mL
HGF
PeproTech#100-39/100-39H
10ug/mL
TGFα
PeproTech#100-16A/AF-100-16A
20ug/mL
OncostatinM(OSM)
PeproTech#300-10/300-10T/AF-300-10T
100ug/ml
Supplier/Catalog#
细胞培养皿,100mm,TC处理,无菌,无细胞毒性
Eppendorf#0030702115
细胞培养板,6孔,TC处理,带盖,平底,独立包装,无菌,无细胞毒性
Eppendorf#0030720113

其他需要辅助试剂,可点击联科官网或致电400-6721-600查询

Matrigel
N2supplement
DMEM/F12
B27Supplement
KnockoutTMSerumReplacement(KOSR)
Non-EssentailAminoAcids
β-Mercaptoethanol
BSA
L-AscorbicAcid
γ-SecretaseInhibitor
Monothioglycerol
VitaminK(VK)
TrypLE
Dexamethasone
DNAseIBovinePancreas
DMSO
HamsF12media
Chir99021
L-Glutamine
L-ASCORBICACID(AA)
Penicillin/Streptomycin
MONOTHIOGLYCEROL(MTG)

================  蚂蚁淘在线  ================

免责声明:本文仅代表作者个人观点,与本网无关。其创作性以及文中陈述文字和内容未经本站证实,对本文以及其中全部或者部分内容、文字的真实性、完整性、及时性本站不做任何保证或承诺,请读者仅作参考,并请自行核实相关内容

版权声明:未经蚂蚁淘在线授权不得转载、摘编或利用其他方式使用上述作品。已经经本网授权使用作品的,应该授权范围内使用,并注明“来源:蚂蚁淘在线”。违反上述声明者,本网将追究其相关法律责任。