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1Center for Environmental and Genetic Medicine, Institute of Biosciences and Technology - Texas A&M Health Science Center, 2Center for Environmental and Genetic Medicine, Texas A&M University (TAMU)
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Psychoyos, D., Finnell, R. Double Whole Mount in situ Hybridization of Early Chick Embryos. J. Vis. Exp. (20), e904, doi:10.3791/904 (2008).
第1部分:固定的胚胎
第2部分:预杂交
第3部分:与探针的杂交胚胎
第4部分:辛抗体孵育和显色反应
第5部分:FITC标记抗体孵育和显色反应
第6部分:固定和加工
第7部分:解决方案
杂交缓冲液中,保存在-20 ° C的猎鹰,50毫升25毫升甲酰胺; 3.25毫升(20xSSC); 0.5毫升(0.5M EDTA); 1毫升(10%Tween - 20的); 2.5毫升(1%SDS) 125 UL(20mg/ml tRNA的); MABT 100ul(50毫克/毫升的肝素),准备100MM马来酸,pH值至7.5氢氧化钠颗粒。 150MM氯化钠和0.1%Tween - 20的。
NTMT(在使用前),50毫升:1毫升(5M氯化钠); 2.5毫升(2M的Tris - HCl pH9.5); 1.25毫升(2M氯化镁2); 5毫升(10%Tween - 20的)。
TBST:0.1M的Tris - HCl,pH值8.45,0.15米,氯化钠0.1%Tween - 20的。
第8部分:故障排除
| 问题 | 原因 | 补救 |
|---|---|---|
| 胚胎蜷缩 | 脱水/补液不足 | 维持在10分钟的间隔连续脱水/补液步骤 |
| 有没有探头的信号 | 探头是退化RNase的污染小瓶 | 1%琼脂糖凝胶上运行的探头确保整个小瓶蛋白酶K溶液暴露在第2步 |
| 探头是标签的心腔神经管 | 探头被困住 | 在第2步,确保所有空腔穿孔采用显微切割刀或microcapillary |
| 胚胎解体以下杂交(步骤3) | 蛋白酶K一步离开太久杂交温度过高 | 蛋白酶K不应该离开不再比1mn(阶段3和4),2分钟(第一阶段5至7),3分钟(8-10期),4分钟(第一阶段11-13)不要在 T O杂交更高超过摄氏65度 |
第9部分:代表结果
代表胚胎如下:(一)胚胎(阶段HH7),是标示与DIG - SOX探头(蓝色)和一个FITC -δ- 1的探头(红色)。 (二)胚胎(阶段HH8)都标有一挖,PAX6探头(蓝色)和FITC - SHH探头(红色)。 NF,神经倍,ANP,前神经板,PSM,presomitic中胚层,N,NT,脊索,神经管)。从博士实验室的探头礼物。 C.塔宾,古尔丁,D.恩里克,和J.布里斯科。 
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2色整装原位杂交方法是用来确定空间和时间的基因表达模式,使用一个或两个基因的兴趣。应用领域包括新基因的基因表达模式的评估 (如1,2,以及以下侮辱基因表达的变化(3 胚胎操作 ,珠4,RNA 或DNA电构造5)。
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这项工作是支持的玛格丽特M. Alkek基金会RHF。
| Name | Type | Company | Catalog Number | Comments |
| Eggs | Animal | Charles River Laboratories | Premium Fertile | |
| Stereomicroscope | Microscope | Leica Microsystems | MZ9.5 | |
| Marsh Automatic Incubator | Tool | Lyon | RX | |
| Hybridization Incubator | Tool | Hybaid | Micro-4 | |
| Adams Nutator orbital mixer | Tool | Fisher Scientific | 14-062 | |
| Curved Forceps (1) | Tool | Electron Microscopy Sciences | 72991-4C | |
| Fine scissors | Tool | Fine Science Tools | 14161-10 | |
| Spoon | Tool | Fine Science Tools | 10370-18 | |
| Pasteur Capillary Pipette | Electron Microscopy Sciences | 70950-12 | ||
| Microcapillary tube | Sigma-Aldrich | P1049-1PAK | Pull using vertical micropipette puller; blunt end with fine forceps | |
| Microdissecting knife | Fine Science Tools | 10056-12 | Use to puncture cavities prior to in situ hybridization | |
| Minuten pins 0.2mm diam | Fine Science Tools | 26002-20 | Keep pins together using a magnetic stirrer; | |
| Sylgard 184 Silicon Elastomer Curing Agent and Base | Reagent | Dow Corning | 0001986475 | Mix 1 part Curing Agent, 9 parts Base; set O/N at 37C |
| Diethylpyrocarbonate (depc) | Reagent | Acros Organics | 10025025 | Add 1ml depc to 1l PBS; shake; autoclave |
| 16% PFA | Reagent | Electron Microscopy Sciences | 15710 | |
| Tween-20 | Reagent | Sigma-Aldrich | P1379-100ML | |
| Proteinase K | Sigma-Aldrich | P2308-5MG | Stock at 10 mg/ml in depc-H2O in 10ul aliquots. Store at -20C. | |
| Formamide, deionized | Reagent | Ambion | 9342 | |
| Yeast tRNA-25 mg | Reagent | Invitrogen | 15401-011 | Stock at 20 mg/ml in depc-H2O in 125ul aliquots. Store at -20C |
| Heparin Sodium salt | Reagent | Sigma-Aldrich | H4784-250MG | Stock at 50 mg/ml in depc-H2O in 100ul aliquots. Store at -20C. |
| SSC x20 pH5.5 | Reagent | Fisher Scientific | PR-V4261 | |
| EDTA (0.5M) | PR-V4231 | Fisher Scientific | ||
| SDS | Reagent | Fisher Scientific | BP166-100 | |
| Maleic acid | Reagent | Fluka | 63189 | |
| B–hringer Blocking Reagent | Reagent | Roche Group | 11096176001 | Use at 2% in MABT. To make, heat with MABT for 20 mn at 60C. Can make a stock and store in 1-5 ml aliquots at 20C. |
| Heat inactivated sheep serum | Reagent | Jackson ImmunoResearch | 013-000-121 | Dissolve in 10 ml H2O; heat 550C, 30 mn. Aliquot at 1ml, -20C. |
| Anti-Digoxigenin-AP, Fab fragments | Reagent | Roche Group | 11093274910 | |
| NBT/BCIP stock solution | Reagent | Roche Group | 11681451001 | |
| Anti-Fluorescein-AP, Fab fragments | Reagent | Roche Group | 11426338910 | |
| 2M Tris | BP1759-500 | Fisher Scientific | ||
| Vector Red Alkaline Phosphatase Substrate Kit | Reagent | Vector Laboratories | SK-5100 | |
| 1,2,3,4-tetrahydronaphthalene | Reagent | Sigma-Aldrich | 429325-100ML | Under hood |
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comment from author (DP): Pax6 expressed in neural folds and developing neural tube (Results section)
1
ReplyPosted by: DPsychoyosOctober 28, 2008, 10:34 AM